diff --git a/cdrom/cdrom.c b/cdrom/cdrom.c new file mode 100644 index 0000000..be1190a --- /dev/null +++ b/cdrom/cdrom.c @@ -0,0 +1,1283 @@ +/* Copyright (C) 2010-2019 The RetroArch team +* +* --------------------------------------------------------------------------------------- +* The following license statement only applies to this file (cdrom.c). +* --------------------------------------------------------------------------------------- +* +* Permission is hereby granted, free of charge, +* to any person obtaining a copy of this software and associated documentation files (the "Software"), +* to deal in the Software without restriction, including without limitation the rights to +* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, +* and to permit persons to whom the Software is furnished to do so, subject to the following conditions: +* +* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, +* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, +* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#if defined(__linux__) && !defined(ANDROID) +#include +#include +#endif + +#if defined(_WIN32) && !defined(_XBOX) +#include +#include +#include +#endif + +#define CDROM_CUE_TRACK_BYTES 107 +#define CDROM_MAX_SENSE_BYTES 16 +#define CDROM_MAX_RETRIES 10 + +typedef enum +{ + DIRECTION_NONE, + DIRECTION_IN, + DIRECTION_OUT +} CDROM_CMD_Direction; + +void lba_to_msf(unsigned lba, unsigned char *min, unsigned char *sec, unsigned char *frame) +{ + if (!min || !sec || !frame) + return; + + *frame = lba % 75; + lba /= 75; + *sec = lba % 60; + lba /= 60; + *min = lba; +} + +unsigned msf_to_lba(unsigned char min, unsigned char sec, unsigned char frame) +{ + return (min * 60 + sec) * 75 + frame; +} + +void increment_msf(unsigned char *min, unsigned char *sec, unsigned char *frame) +{ + if (!min || !sec || !frame) + return; + + *min = (*frame == 74) ? (*sec < 59 ? *min : *min + 1) : *min; + *sec = (*frame == 74) ? (*sec < 59 ? (*sec + 1) : 0) : *sec; + *frame = (*frame < 74) ? (*frame + 1) : 0; +} + +static void cdrom_print_sense_data(const unsigned char *sense, size_t len) +{ + unsigned i; + const char *sense_key_text = NULL; + unsigned char key; + unsigned char asc; + unsigned char ascq; + + if (len < 16) + { + printf("CDROM sense data buffer length too small.\n"); + fflush(stdout); + return; + } + + key = sense[2] & 0xF; + asc = sense[12]; + ascq = sense[13]; + + printf("Sense Data: "); + + for (i = 0; i < MIN(len, 16); i++) + { + printf("%02X ", sense[i]); + } + + printf("\n"); + + if (sense[0] == 0x70) + printf("CURRENT ERROR:\n"); + if (sense[0] == 0x71) + printf("DEFERRED ERROR:\n"); + + switch (key) + { + case 0: + sense_key_text = "NO SENSE"; + break; + case 1: + sense_key_text = "RECOVERED ERROR"; + break; + case 2: + sense_key_text = "NOT READY"; + break; + case 3: + sense_key_text = "MEDIUM ERROR"; + break; + case 4: + sense_key_text = "HARDWARE ERROR"; + break; + case 5: + sense_key_text = "ILLEGAL REQUEST"; + break; + case 6: + sense_key_text = "UNIT ATTENTION"; + break; + case 7: + sense_key_text = "DATA PROTECT"; + break; + case 8: + sense_key_text = "BLANK CHECK"; + break; + case 9: + sense_key_text = "VENDOR SPECIFIC"; + break; + case 10: + sense_key_text = "COPY ABORTED"; + break; + case 11: + sense_key_text = "ABORTED COMMAND"; + break; + case 13: + sense_key_text = "VOLUME OVERFLOW"; + break; + case 14: + sense_key_text = "MISCOMPARE"; + break; + } + + printf("Sense Key: %02X (%s)\n", key, sense_key_text); + printf("ASC: %02X\n", asc); + printf("ASCQ: %02X\n", ascq); + + switch (key) + { + case 2: + { + switch (asc) + { + case 4: + { + switch (ascq) + { + case 1: + printf("Description: LOGICAL UNIT IS IN PROCESS OF BECOMING READY\n"); + break; + default: + break; + } + + break; + } + case 0x3a: + { + switch (ascq) + { + case 0: + printf("Description: MEDIUM NOT PRESENT\n"); + break; + case 3: + printf("Description: MEDIUM NOT PRESENT - LOADABLE\n"); + break; + case 1: + printf("Description: MEDIUM NOT PRESENT - TRAY CLOSED\n"); + break; + case 2: + printf("Description: MEDIUM NOT PRESENT - TRAY OPEN\n"); + break; + default: + break; + } + + break; + } + default: + break; + } + } + case 6: + { + if (asc == 0x28 && ascq == 0) + printf("Description: NOT READY TO READY CHANGE, MEDIUM MAY HAVE CHANGED\n"); + break; + } + default: + break; + } + + fflush(stdout); +} + +#if defined(_WIN32) && !defined(_XBOX) +static int cdrom_send_command_win32(HANDLE fh, CDROM_CMD_Direction dir, void *buf, size_t len, unsigned char *cmd, size_t cmd_len, unsigned char *sense, size_t sense_len) +{ + DWORD ioctl_bytes; + BOOL ioctl_rv; + struct sptd_with_sense + { + SCSI_PASS_THROUGH_DIRECT s; + UCHAR sense[128]; + } sptd; + + memset(&sptd, 0, sizeof(sptd)); + + sptd.s.Length = sizeof(sptd.s); + sptd.s.CdbLength = cmd_len; + + switch (dir) + { + case DIRECTION_IN: + sptd.s.DataIn = SCSI_IOCTL_DATA_IN; + break; + case DIRECTION_OUT: + sptd.s.DataIn = SCSI_IOCTL_DATA_OUT; + break; + case DIRECTION_NONE: + default: + sptd.s.DataIn = SCSI_IOCTL_DATA_UNSPECIFIED; + break; + } + + sptd.s.TimeOutValue = 30; + sptd.s.DataBuffer = buf; + sptd.s.DataTransferLength = len; + sptd.s.SenseInfoLength = sizeof(sptd.sense); + sptd.s.SenseInfoOffset = offsetof(struct sptd_with_sense, sense); + + memcpy(sptd.s.Cdb, cmd, cmd_len); + + ioctl_rv = DeviceIoControl(fh, IOCTL_SCSI_PASS_THROUGH_DIRECT, &sptd, + sizeof(sptd), &sptd, sizeof(sptd), &ioctl_bytes, NULL); + + if (!ioctl_rv || sptd.s.ScsiStatus != 0) + return 1; + + return 0; +} +#endif + +#if defined(__linux__) && !defined(ANDROID) +static int cdrom_send_command_linux(int fd, CDROM_CMD_Direction dir, void *buf, size_t len, unsigned char *cmd, size_t cmd_len, unsigned char *sense, size_t sense_len) +{ + sg_io_hdr_t sgio = {0}; + int rv; + + switch (dir) + { + case DIRECTION_IN: + sgio.dxfer_direction = SG_DXFER_FROM_DEV; + break; + case DIRECTION_OUT: + sgio.dxfer_direction = SG_DXFER_TO_DEV; + break; + case DIRECTION_NONE: + default: + sgio.dxfer_direction = SG_DXFER_NONE; + break; + } + + sgio.interface_id = 'S'; + sgio.cmd_len = cmd_len; + sgio.cmdp = cmd; + sgio.dxferp = buf; + sgio.dxfer_len = len; + sgio.sbp = sense; + sgio.mx_sb_len = sense_len; + sgio.timeout = 30000; + + rv = ioctl(fd, SG_IO, &sgio); + + if (rv == -1 || sgio.info & SG_INFO_CHECK) + return 1; + + return 0; +} +#endif + +static int cdrom_send_command(const libretro_vfs_implementation_file *stream, CDROM_CMD_Direction dir, void *buf, size_t len, unsigned char *cmd, size_t cmd_len, size_t skip) +{ + unsigned char *xfer_buf; + unsigned char sense[CDROM_MAX_SENSE_BYTES] = {0}; + unsigned char retries_left = CDROM_MAX_RETRIES; + int rv = 0; + + if (!cmd || cmd_len == 0) + return 1; + + xfer_buf = (unsigned char*)calloc(1, len + skip); + + if (!xfer_buf) + return 1; + +#ifdef CDROM_DEBUG + { + unsigned i; + + printf("CDROM Send Command: "); + + for (i = 0; i < cmd_len / sizeof(*cmd); i++) + { + printf("%02X ", cmd[i]); + } + + printf("\n"); + fflush(stdout); + } +#endif + +retry: +#if defined(__linux__) && !defined(ANDROID) + if (!cdrom_send_command_linux(fileno(stream->fp), dir, xfer_buf, len + skip, cmd, cmd_len, sense, sizeof(sense))) +#else +#if defined(_WIN32) && !defined(_XBOX) + if (!cdrom_send_command_win32(stream->fh, dir, xfer_buf, len + skip, cmd, cmd_len, sense, sizeof(sense))) +#endif +#endif + { + rv = 0; + + if (buf) + memcpy(buf, xfer_buf + skip, len); + } + else + { + /* INQUIRY/TEST should never fail, don't retry */ + if (cmd[0] != 0x0 && cmd[0] != 0x12) + { + unsigned char key = sense[2] & 0xF; + + switch (key) + { + case 0: + case 2: + case 3: + case 4: + case 6: + if (retries_left) + { +#ifdef CDROM_DEBUG + printf("CDROM Read Retry...\n"); + fflush(stdout); +#endif + retries_left--; + usleep(1000 * 1000); + goto retry; + } + else + { + rv = 1; +#ifdef CDROM_DEBUG + printf("CDROM Read Retries failed, giving up.\n"); + fflush(stdout); +#endif + } + + break; + default: + break; + } + } +#ifdef CDROM_DEBUG + printf("CHECK CONDITION\n"); + + cdrom_print_sense_data(sense, sizeof(sense)); +#endif + rv = 1; + } + + if (xfer_buf) + free(xfer_buf); + + return rv; +} + +static const char* get_profile(unsigned short profile) +{ + switch (profile) + { + case 2: + return "Removable disk"; + break; + case 8: + return "CD-ROM"; + break; + case 9: + return "CD-R"; + break; + case 0xA: + return "CD-RW"; + break; + case 0x10: + return "DVD-ROM"; + break; + case 0x11: + return "DVD-R Sequential Recording"; + break; + case 0x12: + return "DVD-RAM"; + break; + case 0x13: + return "DVD-RW Restricted Overwrite"; + break; + case 0x14: + return "DVD-RW Sequential recording"; + break; + case 0x15: + return "DVD-R Dual Layer Sequential Recording"; + break; + case 0x16: + return "DVD-R Dual Layer Jump Recording"; + break; + case 0x17: + return "DVD-RW Dual Layer"; + break; + case 0x1A: + return "DVD+RW"; + break; + case 0x1B: + return "DVD+R"; + break; + case 0x2A: + return "DVD+RW Dual Layer"; + break; + case 0x2B: + return "DVD+R Dual Layer"; + break; + case 0x40: + return "BD-ROM"; + break; + case 0x41: + return "BD-R SRM"; + break; + case 0x42: + return "BD-R RRM"; + break; + case 0x43: + return "BD-RE"; + break; + case 0x50: + return "HD DVD-ROM"; + break; + case 0x51: + return "HD DVD-R"; + break; + case 0x52: + return "HD DVD-RAM"; + break; + case 0x53: + return "HD DVD-RW"; + break; + case 0x58: + return "HD DVD-R Dual Layer"; + break; + case 0x5A: + return "HD DVD-RW Dual Layer"; + break; + default: + break; + } + + return "Unknown"; +} + +int cdrom_get_sense(const libretro_vfs_implementation_file *stream, unsigned char *sense, size_t len) +{ + unsigned char cdb[] = {0x3, 0, 0, 0, 0xFC, 0}; + unsigned char buf[0xFC] = {0}; + int rv = cdrom_send_command(stream, DIRECTION_IN, buf, sizeof(buf), cdb, sizeof(cdb), 0); + +#ifdef CDROM_DEBUG + printf("get sense data status code %d\n", rv); + fflush(stdout); +#endif + + if (rv) + return 1; + + cdrom_print_sense_data(buf, sizeof(buf)); + + return 0; +} + +void cdrom_get_current_config_random_readable(const libretro_vfs_implementation_file *stream) +{ + unsigned char cdb[] = {0x46, 0x2, 0, 0x10, 0, 0, 0, 0, 0x14, 0}; + unsigned char buf[0x14] = {0}; + int rv = cdrom_send_command(stream, DIRECTION_IN, buf, sizeof(buf), cdb, sizeof(cdb), 0); + int i; + + printf("get current config random readable status code %d\n", rv); + + if (rv) + return; + + printf("Feature Header: "); + + for (i = 0; i < 8; i++) + { + printf("%02X ", buf[i]); + } + + printf("\n"); + + printf("Random Readable Feature Descriptor: "); + + for (i = 0; i < 12; i++) + { + printf("%02X ", buf[8 + i]); + } + + printf("\n"); + + printf("Supported commands: READ CAPACITY, READ (10)\n"); +} + +void cdrom_get_current_config_multiread(const libretro_vfs_implementation_file *stream) +{ + unsigned char cdb[] = {0x46, 0x2, 0, 0x1D, 0, 0, 0, 0, 0xC, 0}; + unsigned char buf[0xC] = {0}; + int rv = cdrom_send_command(stream, DIRECTION_IN, buf, sizeof(buf), cdb, sizeof(cdb), 0); + int i; + + printf("get current config multi-read status code %d\n", rv); + + if (rv) + return; + + printf("Feature Header: "); + + for (i = 0; i < 8; i++) + { + printf("%02X ", buf[i]); + } + + printf("\n"); + + printf("Multi-Read Feature Descriptor: "); + + for (i = 0; i < 4; i++) + { + printf("%02X ", buf[8 + i]); + } + + printf("\n"); + + printf("Supported commands: READ (10), READ CD, READ DISC INFORMATION, READ TRACK INFORMATION\n"); +} + +void cdrom_get_current_config_cdread(const libretro_vfs_implementation_file *stream) +{ + unsigned char cdb[] = {0x46, 0x2, 0, 0x1E, 0, 0, 0, 0, 0x10, 0}; + unsigned char buf[0x10] = {0}; + int rv = cdrom_send_command(stream, DIRECTION_IN, buf, sizeof(buf), cdb, sizeof(cdb), 0); + int i; + + printf("get current config cd read status code %d\n", rv); + + if (rv) + return; + + printf("Feature Header: "); + + for (i = 0; i < 8; i++) + { + printf("%02X ", buf[i]); + } + + printf("\n"); + + printf("CD Read Feature Descriptor: "); + + for (i = 0; i < 8; i++) + { + printf("%02X ", buf[8 + i]); + } + + if (buf[8 + 2] & 1) + printf("(current)\n"); + + printf("Supported commands: READ CD, READ CD MSF, READ TOC/PMA/ATIP\n"); +} + +void cdrom_get_current_config_profiles(const libretro_vfs_implementation_file *stream) +{ + unsigned char cdb[] = {0x46, 0x2, 0, 0x0, 0, 0, 0, 0xFF, 0xFA, 0}; + unsigned char buf[0xFFFA] = {0}; + int rv = cdrom_send_command(stream, DIRECTION_IN, buf, sizeof(buf), cdb, sizeof(cdb), 0); + int i; + + printf("get current config profiles status code %d\n", rv); + + if (rv) + return; + + printf("Feature Header: "); + + for (i = 0; i < 8; i++) + { + printf("%02X ", buf[i]); + } + + printf("\n"); + + printf("Profile List Descriptor: "); + + for (i = 0; i < 4; i++) + { + printf("%02X ", buf[8 + i]); + } + + printf("\n"); + + printf("Number of profiles: %u\n", buf[8 + 3] / 4); + + for (i = 0; i < buf[8 + 3] / 4; i++) + { + unsigned short profile = (buf[8 + (4 * (i + 1))] << 8) | buf[8 + (4 * (i + 1)) + 1]; + profile = swap_if_big32(profile); + + printf("Profile Number: %04X (%s) ", profile, get_profile(profile)); + + if (buf[8 + (4 * (i + 1)) + 2] & 1) + printf("(current)\n"); + else + printf("\n"); + } +} + +void cdrom_get_current_config_core(const libretro_vfs_implementation_file *stream) +{ + unsigned char cdb[] = {0x46, 0x2, 0, 0x1, 0, 0, 0, 0, 0x14, 0}; + unsigned char buf[20] = {0}; + unsigned intf_std = 0; + int rv = cdrom_send_command(stream, DIRECTION_IN, buf, sizeof(buf), cdb, sizeof(cdb), 0); + int i; + const char *intf_std_name = "Unknown"; + + printf("get current config core status code %d\n", rv); + + if (rv) + return; + + printf("Feature Header: "); + + for (i = 0; i < 8; i++) + { + printf("%02X ", buf[i]); + } + + printf("\n"); + + if (buf[6] == 0 && buf[7] == 8) + printf("Current Profile: CD-ROM\n"); + else + printf("Current Profile: %02X%02X\n", buf[6], buf[7]); + + printf("Core Feature Descriptor: "); + + for (i = 0; i < 12; i++) + { + printf("%02X ", buf[8 + i]); + } + + printf("\n"); + + intf_std = buf[8 + 4] << 24 | buf[8 + 5] << 16 | buf[8 + 6] << 8 | buf[8 + 7]; + + intf_std = swap_if_big32(intf_std); + + switch (intf_std) + { + case 0: + intf_std_name = "Unspecified"; + break; + case 1: + intf_std_name = "SCSI Family"; + break; + case 2: + intf_std_name = "ATAPI"; + break; + case 7: + intf_std_name = "Serial ATAPI"; + break; + case 8: + intf_std_name = "USB"; + break; + default: + break; + } + + printf("Physical Interface Standard: %u (%s)\n", intf_std, intf_std_name); +} + +int cdrom_read_subq(libretro_vfs_implementation_file *stream, unsigned char *buf, size_t len) +{ + /* MMC Command: READ TOC/PMA/ATIP */ + unsigned char cdb[] = {0x43, 0x2, 0x2, 0, 0, 0, 0x1, 0x9, 0x30, 0}; +#ifdef CDROM_DEBUG + unsigned short data_len = 0; + unsigned char first_session = 0; + unsigned char last_session = 0; + int i; +#endif + int rv; + + if (!buf) + return 1; + + rv = cdrom_send_command(stream, DIRECTION_IN, buf, len, cdb, sizeof(cdb), 0); + + if (rv) + return 1; + +#ifdef CDROM_DEBUG + data_len = buf[0] << 8 | buf[1]; + first_session = buf[2]; + last_session = buf[3]; + + printf("Data Length: %d\n", data_len); + printf("First Session: %d\n", first_session); + printf("Last Session: %d\n", last_session); + + for (i = 0; i < (data_len - 2) / 11; i++) + { + unsigned char session_num = buf[4 + (i * 11) + 0]; + unsigned char adr = (buf[4 + (i * 11) + 1] >> 4) & 0xF; + /*unsigned char control = buf[4 + (i * 11) + 1] & 0xF;*/ + unsigned char tno = buf[4 + (i * 11) + 2]; + unsigned char point = buf[4 + (i * 11) + 3]; + unsigned char pmin = buf[4 + (i * 11) + 8]; + unsigned char psec = buf[4 + (i * 11) + 9]; + unsigned char pframe = buf[4 + (i * 11) + 10]; + + /*printf("i %d control %d adr %d tno %d point %d: ", i, control, adr, tno, point);*/ + /* why is control always 0? */ + + if (/*(control == 4 || control == 6) && */adr == 1 && tno == 0 && point >= 1 && point <= 99) + { + printf("- Session#: %d TNO %d POINT %d ", session_num, tno, point); + printf("Track start time: (MSF %02u:%02u:%02u) ", (unsigned)pmin, (unsigned)psec, (unsigned)pframe); + } + else if (/*(control == 4 || control == 6) && */adr == 1 && tno == 0 && point == 0xA0) + { + printf("- Session#: %d TNO %d POINT %d ", session_num, tno, point); + printf("First Track Number: %d ", pmin); + printf("Disc Type: %d ", psec); + } + else if (/*(control == 4 || control == 6) && */adr == 1 && tno == 0 && point == 0xA1) + { + printf("- Session#: %d TNO %d POINT %d ", session_num, tno, point); + printf("Last Track Number: %d ", pmin); + } + else if (/*(control == 4 || control == 6) && */adr == 1 && tno == 0 && point == 0xA2) + { + printf("- Session#: %d TNO %d POINT %d ", session_num, tno, point); + printf("Lead-out runtime: (MSF %02u:%02u:%02u) ", (unsigned)pmin, (unsigned)psec, (unsigned)pframe); + } + + printf("\n"); + } + + fflush(stdout); +#endif + return 0; +} + +static int cdrom_read_track_info(libretro_vfs_implementation_file *stream, unsigned char track, cdrom_toc_t *toc) +{ + /* MMC Command: READ TRACK INFORMATION */ + unsigned char cdb[] = {0x52, 0x1, 0, 0, 0, track, 0, 0x1, 0x80, 0}; + unsigned char buf[384] = {0}; + unsigned lba = 0; + unsigned track_size = 0; + int rv = cdrom_send_command(stream, DIRECTION_IN, buf, sizeof(buf), cdb, sizeof(cdb), 0); + + if (rv) + return 1; + + memcpy(&lba, buf + 8, 4); + memcpy(&track_size, buf + 24, 4); + + lba = swap_if_little32(lba); + track_size = swap_if_little32(track_size); + + /* lba_start may be earlier than the MSF start times seen in read_subq */ + toc->track[track - 1].lba_start = lba; + toc->track[track - 1].track_size = track_size; + +#ifdef CDROM_DEBUG + printf("Track %d Info: ", track); + printf("Copy: %d ", (buf[5] & 0x10) > 0); + printf("Data Mode: %d ", buf[6] & 0xF); + printf("LBA Start: %d ", lba); + printf("Track Size: %d\n", track_size); + fflush(stdout); +#endif + + return 0; +} + +int cdrom_set_read_speed(libretro_vfs_implementation_file *stream, unsigned speed) +{ + unsigned new_speed = swap_if_big32(speed); + /* MMC Command: SET CD SPEED */ + unsigned char cmd[] = {0xBB, 0, (new_speed >> 24) & 0xFF, (new_speed >> 16) & 0xFF, (new_speed >> 8) & 0xFF, new_speed & 0xFF, 0, 0, 0, 0, 0, 0 }; + + return cdrom_send_command(stream, DIRECTION_NONE, NULL, 0, cmd, sizeof(cmd), 0); +} + +int cdrom_write_cue(libretro_vfs_implementation_file *stream, char **out_buf, size_t *out_len, char cdrom_drive, unsigned char *num_tracks, cdrom_toc_t *toc) +{ + unsigned char buf[2352] = {0}; + unsigned short data_len = 0; + size_t len = 0; + size_t pos = 0; + int rv = 0; + int i; + + if (!out_buf || !out_len || !num_tracks || !toc) + { +#ifdef CDROM_DEBUG + printf("Invalid buffer/length pointer for CDROM cue sheet\n"); + fflush(stdout); +#endif + return 1; + } + + cdrom_set_read_speed(stream, 0xFFFFFFFF); + + rv = cdrom_read_subq(stream, buf, sizeof(buf)); + + if (rv) + return rv; + + data_len = buf[0] << 8 | buf[1]; + + for (i = 0; i < (data_len - 2) / 11; i++) + { + unsigned char adr = (buf[4 + (i * 11) + 1] >> 4) & 0xF; + unsigned char tno = buf[4 + (i * 11) + 2]; + unsigned char point = buf[4 + (i * 11) + 3]; + unsigned char pmin = buf[4 + (i * 11) + 8]; + + if (/*(control == 4 || control == 6) && */adr == 1 && tno == 0 && point == 0xA1) + { + *num_tracks = pmin; +#ifdef CDROM_DEBUG + printf("Number of CDROM tracks: %d\n", *num_tracks); + fflush(stdout); +#endif + break; + } + } + + if (!*num_tracks || *num_tracks > 99) + { +#ifdef CDROM_DEBUG + printf("Invalid number of CDROM tracks: %d\n", *num_tracks); + fflush(stdout); +#endif + return 1; + } + + len = CDROM_CUE_TRACK_BYTES * (*num_tracks); + toc->num_tracks = *num_tracks; + *out_buf = (char*)calloc(1, len); + *out_len = len; + + for (i = 0; i < (data_len - 2) / 11; i++) + { + /*unsigned char session_num = buf[4 + (i * 11) + 0];*/ + unsigned char adr = (buf[4 + (i * 11) + 1] >> 4) & 0xF; + unsigned char control = buf[4 + (i * 11) + 1] & 0xF; + unsigned char tno = buf[4 + (i * 11) + 2]; + unsigned char point = buf[4 + (i * 11) + 3]; + unsigned char pmin = buf[4 + (i * 11) + 8]; + unsigned char psec = buf[4 + (i * 11) + 9]; + unsigned char pframe = buf[4 + (i * 11) + 10]; + unsigned lba = msf_to_lba(pmin, psec, pframe); + + /*printf("i %d control %d adr %d tno %d point %d: ", i, control, adr, tno, point);*/ + /* why is control always 0? */ + + if (/*(control == 4 || control == 6) && */adr == 1 && tno == 0 && point >= 1 && point <= 99) + { + unsigned char mode = 1; + bool audio = false; + const char *track_type = "MODE1/2352"; + + mode = adr; + audio = (!(control & 0x4) && !(control & 0x5)); + +#ifdef CDROM_DEBUG + printf("Track %02d CONTROL %01X ADR %01X MODE %d AUDIO? %d\n", point, control, adr, mode, audio); + fflush(stdout); +#endif + + toc->track[point - 1].track_num = point; + toc->track[point - 1].min = pmin; + toc->track[point - 1].sec = psec; + toc->track[point - 1].frame = pframe; + toc->track[point - 1].lba = lba; + toc->track[point - 1].mode = mode; + toc->track[point - 1].audio = audio; + + if (audio) + track_type = "AUDIO"; + else if (mode == 1) + track_type = "MODE1/2352"; + else if (mode == 2) + track_type = "MODE2/2352"; + + cdrom_read_track_info(stream, point, toc); + +#if defined(_WIN32) && !defined(_XBOX) + pos += snprintf(*out_buf + pos, len - pos, "FILE \"cdrom://%c://drive-track%02d.bin\" BINARY\n", cdrom_drive, point); +#else + pos += snprintf(*out_buf + pos, len - pos, "FILE \"cdrom://drive%c-track%02d.bin\" BINARY\n", cdrom_drive, point); +#endif + pos += snprintf(*out_buf + pos, len - pos, " TRACK %02d %s\n", point, track_type); + + { + unsigned pregap_lba_len = toc->track[point - 1].lba - toc->track[point - 1].lba_start; + + if (toc->track[point - 1].audio && pregap_lba_len > 0) + { + unsigned char min = 0; + unsigned char sec = 0; + unsigned char frame = 0; + + lba_to_msf(pregap_lba_len, &min, &sec, &frame); + + pos += snprintf(*out_buf + pos, len - pos, " INDEX 00 00:00:00\n"); + pos += snprintf(*out_buf + pos, len - pos, " INDEX 01 %02u:%02u:%02u\n", (unsigned)min, (unsigned)sec, (unsigned)frame); + } + else + pos += snprintf(*out_buf + pos, len - pos, " INDEX 01 00:00:00\n"); + } + } + } + + return 0; +} + +/* needs 32 bytes for full vendor, product and version */ +int cdrom_get_inquiry(const libretro_vfs_implementation_file *stream, char *model, int len, bool *is_cdrom) +{ + /* MMC Command: INQUIRY */ + unsigned char cdb[] = {0x12, 0, 0, 0, 0xff, 0}; + unsigned char buf[256] = {0}; + int rv = cdrom_send_command(stream, DIRECTION_IN, buf, sizeof(buf), cdb, sizeof(cdb), 0); + bool cdrom = false; + + if (rv) + return 1; + + if (model && len >= 32) + { + memset(model, 0, len); + + /* vendor */ + memcpy(model, buf + 8, 8); + + model[8] = ' '; + + /* product */ + memcpy(model + 9, buf + 16, 16); + + model[25] = ' '; + + /* version */ + memcpy(model + 26, buf + 32, 4); + } + + cdrom = (buf[0] == 5); + + if (is_cdrom && cdrom) + *is_cdrom = true; + +#ifdef CDROM_DEBUG + printf("Device Model: %s (is CD-ROM? %s)\n", model, (cdrom ? "yes" : "no")); +#endif + return 0; +} + +int cdrom_read(libretro_vfs_implementation_file *stream, unsigned char min, unsigned char sec, unsigned char frame, void *s, size_t len, size_t skip) +{ + /* MMC Command: READ CD MSF */ + unsigned char cdb[] = {0xB9, 0, 0, min, sec, frame, 0, 0, 0, 0xF8, 0, 0}; + int rv; + + if (len + skip <= 2352) + { + unsigned char next_min = (frame == 74) ? (sec < 59 ? min : min + 1) : min; + unsigned char next_sec = (frame == 74) ? (sec < 59 ? (sec + 1) : 0) : sec; + unsigned char next_frame = (frame < 74) ? (frame + 1) : 0; + + cdb[6] = next_min; + cdb[7] = next_sec; + cdb[8] = next_frame; + +#ifdef CDROM_DEBUG + printf("single-frame read: from %d %d %d to %d %d %d skip %" PRId64 "\n", cdb[3], cdb[4], cdb[5], cdb[6], cdb[7], cdb[8], skip); + fflush(stdout); +#endif + } + else + { + unsigned frames = msf_to_lba(min, sec, frame) + ceil((len + skip) / 2352.0); + + lba_to_msf(frames, &cdb[6], &cdb[7], &cdb[8]); + +#ifdef CDROM_DEBUG + printf("multi-frame read: from %d %d %d to %d %d %d skip %" PRId64 "\n", cdb[3], cdb[4], cdb[5], cdb[6], cdb[7], cdb[8], skip); + fflush(stdout); +#endif + } + + rv = cdrom_send_command(stream, DIRECTION_IN, s, len, cdb, sizeof(cdb), skip); + +#ifdef CDROM_DEBUG + printf("read status code %d\n", rv); + fflush(stdout); +#endif + + if (rv) + return 1; + + return 0; +} + +int cdrom_stop(const libretro_vfs_implementation_file *stream) +{ + /* MMC Command: START STOP UNIT */ + unsigned char cdb[] = {0x1B, 0, 0, 0, 0x0, 0}; + int rv = cdrom_send_command(stream, DIRECTION_NONE, NULL, 0, cdb, sizeof(cdb), 0); + +#ifdef CDROM_DEBUG + printf("stop status code %d\n", rv); + fflush(stdout); +#endif + + if (rv) + return 1; + + return 0; +} + +int cdrom_unlock(const libretro_vfs_implementation_file *stream) +{ + /* MMC Command: PREVENT ALLOW MEDIUM REMOVAL */ + unsigned char cdb[] = {0x1E, 0, 0, 0, 0x2, 0}; + int rv = cdrom_send_command(stream, DIRECTION_NONE, NULL, 0, cdb, sizeof(cdb), 0); + +#ifdef CDROM_DEBUG + printf("persistent prevent clear status code %d\n", rv); + fflush(stdout); +#endif + + if (rv) + return 1; + + cdb[4] = 0x0; + + rv = cdrom_send_command(stream, DIRECTION_NONE, NULL, 0, cdb, sizeof(cdb), 0); + +#ifdef CDROM_DEBUG + printf("prevent clear status code %d\n", rv); + fflush(stdout); +#endif + + if (rv) + return 1; + + return 0; +} + +int cdrom_open_tray(const libretro_vfs_implementation_file *stream) +{ + /* MMC Command: START STOP UNIT */ + unsigned char cdb[] = {0x1B, 0, 0, 0, 0x2, 0}; + int rv; + + cdrom_unlock(stream); + cdrom_stop(stream); + + rv = cdrom_send_command(stream, DIRECTION_NONE, NULL, 0, cdb, sizeof(cdb), 0); + +#ifdef CDROM_DEBUG + printf("open tray status code %d\n", rv); + fflush(stdout); +#endif + + if (rv) + return 1; + + return 0; +} + +int cdrom_close_tray(const libretro_vfs_implementation_file *stream) +{ + /* MMC Command: START STOP UNIT */ + unsigned char cdb[] = {0x1B, 0, 0, 0, 0x3, 0}; + int rv = cdrom_send_command(stream, DIRECTION_NONE, NULL, 0, cdb, sizeof(cdb), 0); + +#ifdef CDROM_DEBUG + printf("close tray status code %d\n", rv); + fflush(stdout); +#endif + + if (rv) + return 1; + + return 0; +} + +struct string_list* cdrom_get_available_drives(void) +{ + struct string_list *list = string_list_new(); +#if defined(__linux__) && !defined(ANDROID) + struct string_list *dir_list = dir_list_new("/dev", NULL, false, false, false, false); + int drive_index = 0; + int i; + + if (!dir_list) + return list; + + for (i = 0; i < dir_list->size; i++) + { + if (strstr(dir_list->elems[i].data, "/dev/sg")) + { + char drive_model[32] = {0}; + char drive_string[64] = {0}; + union string_list_elem_attr attr = {0}; + int dev_index = 0; + RFILE *file = filestream_open(dir_list->elems[i].data, RETRO_VFS_FILE_ACCESS_READ, 0); + const libretro_vfs_implementation_file *stream; + bool is_cdrom = false; + + if (!file) + continue; + + stream = filestream_get_vfs_handle(file); + cdrom_get_inquiry(stream, drive_model, sizeof(drive_model), &is_cdrom); + filestream_close(file); + + if (!is_cdrom) + continue; + + sscanf(dir_list->elems[i].data + strlen("/dev/sg"), "%d", &dev_index); + + attr.i = dev_index; + + snprintf(drive_string, sizeof(drive_string), "Drive %d: ", drive_index + 1); + + if (!string_is_empty(drive_model)) + strlcat(drive_string, drive_model, sizeof(drive_string)); + else + strlcat(drive_string, "Unknown Drive", sizeof(drive_string)); + + string_list_append(list, drive_string, attr); + drive_index++; + } + } + + string_list_free(dir_list); +#endif +#if defined(_WIN32) && !defined(_XBOX) + DWORD drive_mask = GetLogicalDrives(); + int i; + int drive_index = 0; + + for (i = 0; i < sizeof(DWORD) * 8; i++) + { + char path[] = {"a:\\"}; + char cdrom_path[] = {"cdrom://a:/drive-track01.bin"}; + + path[0] += i; + cdrom_path[8] += i; + + /* this drive letter doesn't exist */ + if (!(drive_mask & (1 << i))) + continue; + + if (GetDriveType(path) != DRIVE_CDROM) + continue; + else + { + char drive_model[32] = {0}; + char drive_string[64] = {0}; + union string_list_elem_attr attr = {0}; + RFILE *file = filestream_open(cdrom_path, RETRO_VFS_FILE_ACCESS_READ, 0); + const libretro_vfs_implementation_file *stream; + bool is_cdrom = false; + + if (!file) + continue; + + stream = filestream_get_vfs_handle(file); + cdrom_get_inquiry(stream, drive_model, sizeof(drive_model), &is_cdrom); + filestream_close(file); + + if (!is_cdrom) + continue; + + attr.i = path[0]; + + snprintf(drive_string, sizeof(drive_string), "Drive %d: ", drive_index + 1); + + if (!string_is_empty(drive_model)) + strlcat(drive_string, drive_model, sizeof(drive_string)); + else + strlcat(drive_string, "Unknown Drive", sizeof(drive_string)); + + string_list_append(list, drive_string, attr); + drive_index++; + } + } +#endif + return list; +} + +bool cdrom_is_media_inserted(const libretro_vfs_implementation_file *stream) +{ + /* MMC Command: TEST UNIT READY */ + unsigned char cdb[] = {0x00, 0, 0, 0, 0, 0}; + int rv = cdrom_send_command(stream, DIRECTION_NONE, NULL, 0, cdb, sizeof(cdb), 0); + +#ifdef CDROM_DEBUG + printf("media inserted status code %d\n", rv); + fflush(stdout); +#endif + + /* Will also return false if the drive is simply not ready yet (tray open, disc spinning back up after tray closed etc). + * Command will not block or wait for media to become ready. */ + if (rv) + return false; + + return true; +} + diff --git a/encodings/encoding_base64.c b/encodings/encoding_base64.c new file mode 100644 index 0000000..7f30cf9 --- /dev/null +++ b/encodings/encoding_base64.c @@ -0,0 +1,151 @@ +/* + https://github.com/superwills/NibbleAndAHalf + base64.h -- Fast base64 encoding and decoding. + version 1.0.0, April 17, 2013 143a + Copyright (C) 2013 William Sherif + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. + William Sherif + will.sherif@gmail.com + YWxsIHlvdXIgYmFzZSBhcmUgYmVsb25nIHRvIHVz + + + Modified for RetroArch formatting, logging, and header files. +*/ + + +#include +#include +#include + +/* + Converts binary data of length=len to base64 characters. + Length of the resultant string is stored in flen + (you must pass pointer flen). +*/ +char* base64(const void* binaryData, int len, int *flen) +{ + const unsigned char* bin = (const unsigned char*) binaryData; + char* res; + + int rc = 0; /* result counter */ + int byteNo; /* I need this after the loop */ + + int modulusLen = len % 3 ; + + /* 2 gives 1 and 1 gives 2, but 0 gives 0. */ + int pad = ((modulusLen&1)<<1) + ((modulusLen&2)>>1); + + *flen = 4*(len + pad)/3; + res = (char*) malloc(*flen + 1); /* and one for the null */ + if (!res) + { + /* ERROR: base64 could not allocate enough memory. */ + return 0; + } + + for (byteNo=0; byteNo <= len-3; byteNo+=3) + { + unsigned char BYTE0 = bin[byteNo]; + unsigned char BYTE1 = bin[byteNo+1]; + unsigned char BYTE2 = bin[byteNo+2]; + + res[rc++] = b64[BYTE0 >> 2]; + res[rc++] = b64[((0x3&BYTE0)<<4) + (BYTE1 >> 4)]; + res[rc++] = b64[((0x0f&BYTE1)<<2) + (BYTE2>>6)]; + res[rc++] = b64[0x3f&BYTE2]; + } + + if (pad==2) + { + res[rc++] = b64[bin[byteNo] >> 2]; + res[rc++] = b64[(0x3&bin[byteNo])<<4]; + res[rc++] = '='; + res[rc++] = '='; + } + else if (pad==1) + { + res[rc++] = b64[bin[byteNo] >> 2]; + res[rc++] = b64[((0x3&bin[byteNo])<<4) + (bin[byteNo+1] >> 4)]; + res[rc++] = b64[(0x0f&bin[byteNo+1])<<2]; + res[rc++] = '='; + } + + res[rc]=0; /* NULL TERMINATOR! ;) */ + return res; +} + +unsigned char* unbase64(const char* ascii, int len, int *flen) +{ + const unsigned char *safeAsciiPtr = (const unsigned char*) ascii; + unsigned char *bin; + int cb = 0; + int charNo; + int pad = 0; + + if (len < 2) { /* 2 accesses below would be OOB. */ + /* catch empty string, return NULL as result. */ + + /* ERROR: You passed an invalid base64 string (too short). + * You get NULL back. */ + *flen = 0; + return 0; + } + + if(safeAsciiPtr[len-1]=='=') + ++pad; + if(safeAsciiPtr[len-2]=='=') + ++pad; + + *flen = 3*len/4 - pad; + bin = (unsigned char*)malloc(*flen); + + if (!bin) + { + /* ERROR: unbase64 could not allocate enough memory. */ + return 0; + } + + for (charNo=0; charNo <= len-4-pad; charNo+=4) + { + int A = unb64[safeAsciiPtr[charNo]]; + int B = unb64[safeAsciiPtr[charNo+1]]; + int C = unb64[safeAsciiPtr[charNo+2]]; + int D = unb64[safeAsciiPtr[charNo+3]]; + + bin[cb++] = (A<<2) | (B>>4); + bin[cb++] = (B<<4) | (C>>2); + bin[cb++] = (C<<6) | (D); + } + + if (pad==1) + { + int A = unb64[safeAsciiPtr[charNo]]; + int B = unb64[safeAsciiPtr[charNo+1]]; + int C = unb64[safeAsciiPtr[charNo+2]]; + + bin[cb++] = (A<<2) | (B>>4); + bin[cb++] = (B<<4) | (C>>2); + } + else if (pad==2) + { + int A = unb64[safeAsciiPtr[charNo]]; + int B = unb64[safeAsciiPtr[charNo+1]]; + + bin[cb++] = (A<<2) | (B>>4); + } + + return bin; +} + diff --git a/formats/libchdr/libchdr_chd.c b/formats/libchdr/libchdr_chd.c index 4713dd6..3e3de49 100644 --- a/formats/libchdr/libchdr_chd.c +++ b/formats/libchdr/libchdr_chd.c @@ -637,14 +637,24 @@ static chd_error decompress_v5_map(chd_file* chd, chd_header* header) { uint8_t *rawmap = header->rawmap + (hunknum * 12); if (repcount > 0) - rawmap[0] = lastcomp, repcount--; + { + rawmap[0] = lastcomp; + repcount--; + } else { uint8_t val = huffman_decode_one(decoder, bitbuf); if (val == COMPRESSION_RLE_SMALL) - rawmap[0] = lastcomp, repcount = 2 + huffman_decode_one(decoder, bitbuf); + { + rawmap[0] = lastcomp; + repcount = 2 + huffman_decode_one(decoder, bitbuf); + } else if (val == COMPRESSION_RLE_LARGE) - rawmap[0] = lastcomp, repcount = 2 + 16 + (huffman_decode_one(decoder, bitbuf) << 4), repcount += huffman_decode_one(decoder, bitbuf); + { + rawmap[0] = lastcomp; + repcount = 2 + 16 + (huffman_decode_one(decoder, bitbuf) << 4); + repcount += huffman_decode_one(decoder, bitbuf); + } else rawmap[0] = lastcomp = val; } @@ -1460,7 +1470,7 @@ static chd_error header_read(chd_file *chd, chd_header *header) header->mapoffset = get_bigendian_uint64(&rawheader[40]); header->metaoffset = get_bigendian_uint64(&rawheader[48]); header->hunkbytes = get_bigendian_uint32(&rawheader[56]); - header->hunkcount = (header->logicalbytes + header->hunkbytes - 1) / header->hunkbytes; + header->hunkcount = (UINT32)((header->logicalbytes + header->hunkbytes - 1) / header->hunkbytes); header->unitbytes = get_bigendian_uint32(&rawheader[60]); header->unitcount = (header->logicalbytes + header->unitbytes - 1) / header->unitbytes; memcpy(header->sha1, &rawheader[84], CHD_SHA1_BYTES); @@ -1614,11 +1624,11 @@ static chd_error hunk_read_into_memory(chd_file *chd, UINT32 hunknum, UINT8 *des if (chd->cachehunk == entry->offset && dest == chd->cache) break; #endif - return hunk_read_into_memory(chd, entry->offset, dest); + return hunk_read_into_memory(chd, (UINT32)entry->offset, dest); /* parent-referenced data */ case MAP_ENTRY_TYPE_PARENT_HUNK: - err = hunk_read_into_memory(chd->parent, entry->offset, dest); + err = hunk_read_into_memory(chd->parent, (UINT32)entry->offset, dest); if (err != CHDERR_NONE) return err; break; @@ -1711,7 +1721,7 @@ static chd_error hunk_read_into_memory(chd_file *chd, UINT32 hunknum, UINT8 *des return CHDERR_NONE; case COMPRESSION_SELF: - return hunk_read_into_memory(chd, blockoffs, dest); + return hunk_read_into_memory(chd, (UINT32)blockoffs, dest); case COMPRESSION_PARENT: #if 0 diff --git a/formats/libchdr/libchdr_flac.c b/formats/libchdr/libchdr_flac.c index 4cc5dc2..dd09dc0 100644 --- a/formats/libchdr/libchdr_flac.c +++ b/formats/libchdr/libchdr_flac.c @@ -190,7 +190,7 @@ uint32_t flac_decoder_finish(flac_decoder* decoder) return 0; if (decoder->compressed_start == (const FLAC__byte *)(decoder->custom_header)) position -= decoder->compressed_length; - return position; + return (uint32_t)position; } /*------------------------------------------------- @@ -208,13 +208,14 @@ FLAC__StreamDecoderReadStatus flac_decoder_read_callback(void* client_data, FLAC { flac_decoder* decoder = (flac_decoder*)client_data; - uint32_t expected = *bytes; + uint32_t expected = (uint32_t)*bytes; /* copy from primary buffer first */ - uint32_t outputpos = 0; + uint32_t outputpos = 0; + if (outputpos < *bytes && decoder->compressed_offset < decoder->compressed_length) { - uint32_t bytes_to_copy = MIN(*bytes - outputpos, decoder->compressed_length - decoder->compressed_offset); + uint32_t bytes_to_copy = (uint32_t)MIN(*bytes - outputpos, decoder->compressed_length - decoder->compressed_offset); memcpy(&buffer[outputpos], decoder->compressed_start + decoder->compressed_offset, bytes_to_copy); outputpos += bytes_to_copy; decoder->compressed_offset += bytes_to_copy; @@ -223,7 +224,7 @@ FLAC__StreamDecoderReadStatus flac_decoder_read_callback(void* client_data, FLAC /* once we're out of that, copy from the secondary buffer */ if (outputpos < *bytes && decoder->compressed_offset < decoder->compressed_length + decoder->compressed2_length) { - uint32_t bytes_to_copy = MIN(*bytes - outputpos, decoder->compressed2_length - (decoder->compressed_offset - decoder->compressed_length)); + uint32_t bytes_to_copy = (uint32_t)MIN(*bytes - outputpos, decoder->compressed2_length - (decoder->compressed_offset - decoder->compressed_length)); memcpy(&buffer[outputpos], decoder->compressed2_start + decoder->compressed_offset - decoder->compressed_length, bytes_to_copy); outputpos += bytes_to_copy; decoder->compressed_offset += bytes_to_copy; diff --git a/formats/libchdr/libchdr_huffman.c b/formats/libchdr/libchdr_huffman.c index 9d69a7b..bf54b59 100644 --- a/formats/libchdr/libchdr_huffman.c +++ b/formats/libchdr/libchdr_huffman.c @@ -273,7 +273,10 @@ enum huffman_error huffman_import_tree_huffman(struct huffman_decoder* decoder, /* determine the maximum length of an RLE count */ temp = decoder->numcodes - 9; while (temp != 0) - temp >>= 1, rlefullbits++; + { + temp >>= 1; + rlefullbits++; + } /* now process the rest of the data */ for (curcode = 0; curcode < decoder->numcodes; ) diff --git a/formats/libchdr/libchdr_lzma.c b/formats/libchdr/libchdr_lzma.c index cf39b97..846ef8c 100644 --- a/formats/libchdr/libchdr_lzma.c +++ b/formats/libchdr/libchdr_lzma.c @@ -102,7 +102,7 @@ static void *lzma_fast_alloc(void *p, size_t size) } /* set the low bit of the size so we don't match next time */ - *addr = size | 1; + *addr = (uint32_t)(size | 1); return addr + 1; } diff --git a/include/cdrom/cdrom.h b/include/cdrom/cdrom.h new file mode 100644 index 0000000..372c8e8 --- /dev/null +++ b/include/cdrom/cdrom.h @@ -0,0 +1,111 @@ +/* Copyright (C) 2010-2019 The RetroArch team + * + * --------------------------------------------------------------------------------------- + * The following license statement only applies to this file (cdrom.h). + * --------------------------------------------------------------------------------------- + * + * Permission is hereby granted, free of charge, + * to any person obtaining a copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation the rights to + * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, + * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef __LIBRETRO_SDK_CDROM_H +#define __LIBRETRO_SDK_CDROM_H + +#include +#include +#include +#include + +#include +#include +#include + +#include + +#ifdef VFS_FRONTEND +typedef struct retro_vfs_file_handle libretro_vfs_implementation_file; +#else +typedef struct libretro_vfs_implementation_file libretro_vfs_implementation_file; +#endif + +struct string_list; + +RETRO_BEGIN_DECLS + +typedef struct +{ + unsigned lba_start; /* start of pregap */ + unsigned lba; /* start of data */ + unsigned track_size; + unsigned char track_num; + unsigned char min; /* start of data */ + unsigned char sec; + unsigned char frame; + unsigned char mode; + bool audio; +} cdrom_track_t; + +typedef struct +{ + char drive; + unsigned char num_tracks; + cdrom_track_t track[99]; +} cdrom_toc_t; + +void lba_to_msf(unsigned lba, unsigned char *min, unsigned char *sec, unsigned char *frame); + +unsigned msf_to_lba(unsigned char min, unsigned char sec, unsigned char frame); + +void increment_msf(unsigned char *min, unsigned char *sec, unsigned char *frame); + +int cdrom_read_subq(libretro_vfs_implementation_file *stream, unsigned char *buf, size_t len); + +int cdrom_write_cue(libretro_vfs_implementation_file *stream, char **out_buf, size_t *out_len, char cdrom_drive, unsigned char *num_tracks, cdrom_toc_t *toc); + +/* needs 32 bytes for full vendor, product and version */ +int cdrom_get_inquiry(const libretro_vfs_implementation_file *stream, char *model, int len, bool *is_cdrom); + +int cdrom_read(libretro_vfs_implementation_file *stream, unsigned char min, unsigned char sec, unsigned char frame, void *s, size_t len, size_t skip); + +int cdrom_set_read_speed(libretro_vfs_implementation_file *stream, unsigned speed); + +int cdrom_stop(const libretro_vfs_implementation_file *stream); + +int cdrom_unlock(const libretro_vfs_implementation_file *stream); + +int cdrom_open_tray(const libretro_vfs_implementation_file *stream); + +int cdrom_close_tray(const libretro_vfs_implementation_file *stream); + +/* must be freed by the caller */ +struct string_list* cdrom_get_available_drives(void); + +bool cdrom_is_media_inserted(const libretro_vfs_implementation_file *stream); + +void cdrom_get_current_config_core(const libretro_vfs_implementation_file *stream); + +void cdrom_get_current_config_profiles(const libretro_vfs_implementation_file *stream); + +void cdrom_get_current_config_cdread(const libretro_vfs_implementation_file *stream); + +void cdrom_get_current_config_multiread(const libretro_vfs_implementation_file *stream); + +void cdrom_get_current_config_random_readable(const libretro_vfs_implementation_file *stream); + +int cdrom_get_sense(const libretro_vfs_implementation_file *stream, unsigned char *sense, size_t len); + +RETRO_END_DECLS + +#endif diff --git a/include/compat/zlib/zconf.h b/include/compat/zlib/zconf.h new file mode 100644 index 0000000..007b644 --- /dev/null +++ b/include/compat/zlib/zconf.h @@ -0,0 +1,483 @@ +/* zconf.h -- configuration of the zlib compression library + * Copyright (C) 1995-2013 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* @(#) $Id$ */ + +#ifndef ZCONF_H +#define ZCONF_H + +/* + * If you *really* need a unique prefix for all types and library functions, + * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it. + * Even better than compiling with -DZ_PREFIX would be to use configure to set + * this permanently in zconf.h using "./configure --zprefix". + */ +#ifdef Z_PREFIX /* may be set to #if 1 by ./configure */ +# define Z_PREFIX_SET + +/* all linked symbols */ +# define _dist_code z__dist_code +# define _length_code z__length_code +# define _tr_align z__tr_align +# define _tr_flush_bits z__tr_flush_bits +# define _tr_flush_block z__tr_flush_block +# define _tr_init z__tr_init +# define _tr_stored_block z__tr_stored_block +# define _tr_tally z__tr_tally +# define adler32 z_adler32 +# define adler32_combine z_adler32_combine +# define adler32_combine64 z_adler32_combine64 +# ifndef Z_SOLO +# define compress z_compress +# define compress2 z_compress2 +# define compressBound z_compressBound +# endif +# define crc32 z_crc32 +# define crc32_combine z_crc32_combine +# define crc32_combine64 z_crc32_combine64 +# define deflate z_deflate +# define deflateBound z_deflateBound +# define deflateCopy z_deflateCopy +# define deflateEnd z_deflateEnd +# define deflateInit2_ z_deflateInit2_ +# define deflateInit_ z_deflateInit_ +# define deflateParams z_deflateParams +# define deflatePending z_deflatePending +# define deflatePrime z_deflatePrime +# define deflateReset z_deflateReset +# define deflateResetKeep z_deflateResetKeep +# define deflateSetDictionary z_deflateSetDictionary +# define deflateSetHeader z_deflateSetHeader +# define deflateTune z_deflateTune +# define deflate_copyright z_deflate_copyright +# define get_crc_table z_get_crc_table +# ifndef Z_SOLO +# define gz_error z_gz_error +# define gz_intmax z_gz_intmax +# define gz_strwinerror z_gz_strwinerror +# define gzbuffer z_gzbuffer +# define gzclearerr z_gzclearerr +# define gzclose z_gzclose +# define gzclose_r z_gzclose_r +# define gzclose_w z_gzclose_w +# define gzdirect z_gzdirect +# define gzdopen z_gzdopen +# define gzeof z_gzeof +# define gzerror z_gzerror +# define gzflush z_gzflush +# define gzgetc z_gzgetc +# define gzgetc_ z_gzgetc_ +# define gzgets z_gzgets +# define gzoffset z_gzoffset +# define gzoffset64 z_gzoffset64 +# define gzopen z_gzopen +# define gzopen64 z_gzopen64 +# ifdef _WIN32 +# define gzopen_w z_gzopen_w +# endif +# define gzprintf z_gzprintf +# define gzvprintf z_gzvprintf +# define gzputc z_gzputc +# define gzputs z_gzputs +# define gzread z_gzread +# define gzrewind z_gzrewind +# define gzseek z_gzseek +# define gzseek64 z_gzseek64 +# define gzsetparams z_gzsetparams +# define gztell z_gztell +# define gztell64 z_gztell64 +# define gzungetc z_gzungetc +# define gzwrite z_gzwrite +# endif +# define inflate z_inflate +# define inflateBack z_inflateBack +# define inflateBackEnd z_inflateBackEnd +# define inflateBackInit_ z_inflateBackInit_ +# define inflateCopy z_inflateCopy +# define inflateEnd z_inflateEnd +# define inflateGetHeader z_inflateGetHeader +# define inflateInit2_ z_inflateInit2_ +# define inflateInit_ z_inflateInit_ +# define inflateMark z_inflateMark +# define inflatePrime z_inflatePrime +# define inflateReset z_inflateReset +# define inflateReset2 z_inflateReset2 +# define inflateSetDictionary z_inflateSetDictionary +# define inflateGetDictionary z_inflateGetDictionary +# define inflateSync z_inflateSync +# define inflateSyncPoint z_inflateSyncPoint +# define inflateUndermine z_inflateUndermine +# define inflateResetKeep z_inflateResetKeep +# define inflate_copyright z_inflate_copyright +# define inflate_fast z_inflate_fast +# define inflate_table z_inflate_table +# ifndef Z_SOLO +# define uncompress z_uncompress +# endif +# define zError z_zError +# ifndef Z_SOLO +# define zcalloc z_zcalloc +# define zcfree z_zcfree +# endif +# define zlibCompileFlags z_zlibCompileFlags +# define zlibVersion z_zlibVersion + +/* all zlib typedefs in zlib.h and zconf.h */ +# define Byte z_Byte +# define Bytef z_Bytef +# define alloc_func z_alloc_func +# define charf z_charf +# define free_func z_free_func +# ifndef Z_SOLO +# define gzFile z_gzFile +# endif +# define gz_header z_gz_header +# define gz_headerp z_gz_headerp +# define in_func z_in_func +# define intf z_intf +# define out_func z_out_func +# define uInt z_uInt +# define uIntf z_uIntf +# define uLong z_uLong +# define uLongf z_uLongf +# define voidp z_voidp +# define voidpc z_voidpc +# define voidpf z_voidpf + +/* all zlib structs in zlib.h and zconf.h */ +# define gz_header_s z_gz_header_s +# define internal_state z_internal_state + +#endif + +#if defined(__MSDOS__) && !defined(MSDOS) +# define MSDOS +#endif +#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2) +# define OS2 +#endif +#if defined(_WINDOWS) && !defined(WINDOWS) +# define WINDOWS +#endif +#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__) +# ifndef WIN32 +# define WIN32 +# endif +#endif +#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32) +# if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__) +# ifndef SYS16BIT +# define SYS16BIT +# endif +# endif +#endif + +/* + * Compile with -DMAXSEG_64K if the alloc function cannot allocate more + * than 64k bytes at a time (needed on systems with 16-bit int). + */ +#ifdef SYS16BIT +# define MAXSEG_64K +#endif +#ifdef MSDOS +# define UNALIGNED_OK +#endif + +#ifdef __STDC_VERSION__ +# ifndef STDC +# define STDC +# endif +# if __STDC_VERSION__ >= 199901L +# ifndef STDC99 +# define STDC99 +# endif +# endif +#endif +#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus)) +# define STDC +#endif +#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__)) +# define STDC +#endif +#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32)) +# define STDC +#endif +#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__)) +# define STDC +#endif + +#if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */ +# define STDC +#endif + +#ifndef STDC +# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */ +# define const /* note: need a more gentle solution here */ +# endif +#endif + +#if defined(ZLIB_CONST) && !defined(z_const) +# define z_const const +#else +# define z_const +#endif + +/* Some Mac compilers merge all .h files incorrectly: */ +#if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__) +# define NO_DUMMY_DECL +#endif + +/* Maximum value for memLevel in deflateInit2 */ +#ifndef MAX_MEM_LEVEL +# ifdef MAXSEG_64K +# define MAX_MEM_LEVEL 8 +# else +# define MAX_MEM_LEVEL 9 +# endif +#endif + +/* Maximum value for windowBits in deflateInit2 and inflateInit2. + * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files + * created by gzip. (Files created by minigzip can still be extracted by + * gzip.) + */ +#ifndef MAX_WBITS +# define MAX_WBITS 15 /* 32K LZ77 window */ +#endif + +/* The memory requirements for deflate are (in bytes): + (1 << (windowBits+2)) + (1 << (memLevel+9)) + that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values) + plus a few kilobytes for small objects. For example, if you want to reduce + the default memory requirements from 256K to 128K, compile with + make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7" + Of course this will generally degrade compression (there's no free lunch). + + The memory requirements for inflate are (in bytes) 1 << windowBits + that is, 32K for windowBits=15 (default value) plus a few kilobytes + for small objects. +*/ + + /* Type declarations */ + +#ifndef OF /* function prototypes */ +# ifdef STDC +# define OF(args) args +# else +# define OF(args) () +# endif +#endif + +#ifndef Z_ARG /* function prototypes for stdarg */ +# if defined(STDC) || defined(Z_HAVE_STDARG_H) +# define Z_ARG(args) args +# else +# define Z_ARG(args) () +# endif +#endif + +/* The following definitions for FAR are needed only for MSDOS mixed + * model programming (small or medium model with some far allocations). + * This was tested only with MSC; for other MSDOS compilers you may have + * to define NO_MEMCPY in zutil.h. If you don't need the mixed model, + * just define FAR to be empty. + */ +#ifdef SYS16BIT +# if defined(M_I86SM) || defined(M_I86MM) + /* MSC small or medium model */ +# define SMALL_MEDIUM +# ifdef _MSC_VER +# define FAR _far +# else +# define FAR far +# endif +# endif +# if (defined(__SMALL__) || defined(__MEDIUM__)) + /* Turbo C small or medium model */ +# define SMALL_MEDIUM +# ifdef __BORLANDC__ +# define FAR _far +# else +# define FAR far +# endif +# endif +#endif + +#if defined(WINDOWS) || defined(WIN32) + /* If building or using zlib as a DLL, define ZLIB_DLL. + * This is not mandatory, but it offers a little performance increase. + */ +# ifdef ZLIB_DLL +# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500)) +# ifdef ZLIB_INTERNAL +# define ZEXTERN extern __declspec(dllexport) +# else +# define ZEXTERN extern __declspec(dllimport) +# endif +# endif +# endif /* ZLIB_DLL */ + /* If building or using zlib with the WINAPI/WINAPIV calling convention, + * define ZLIB_WINAPI. + * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI. + */ +# ifdef ZLIB_WINAPI +# ifdef FAR +# undef FAR +# endif +# include + /* No need for _export, use ZLIB.DEF instead. */ + /* For complete Windows compatibility, use WINAPI, not __stdcall. */ +# endif +#endif + +#ifndef FAR +# define FAR +#endif + +#if !defined(__MACTYPES__) +typedef unsigned char Byte; /* 8 bits */ +#endif +typedef unsigned int uInt; /* 16 bits or more */ +typedef unsigned long uLong; /* 32 bits or more */ + +#ifdef SMALL_MEDIUM + /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */ +# define Bytef Byte FAR +#else + typedef Byte FAR Bytef; +#endif +typedef char FAR charf; +typedef int FAR intf; +typedef uInt FAR uIntf; +typedef uLong FAR uLongf; + +#ifdef STDC + typedef void const *voidpc; + typedef void FAR *voidpf; + typedef void *voidp; +#else + typedef Byte const *voidpc; + typedef Byte FAR *voidpf; + typedef Byte *voidp; +#endif + +#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC) +# include +# if (UINT_MAX == 0xffffffffUL) +# define Z_U4 unsigned +# elif (ULONG_MAX == 0xffffffffUL) +# define Z_U4 unsigned long +# elif (USHRT_MAX == 0xffffffffUL) +# define Z_U4 unsigned short +# endif +#endif + +#ifdef Z_U4 + typedef Z_U4 z_crc_t; +#else + typedef unsigned long z_crc_t; +#endif + +#ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */ +# define Z_HAVE_UNISTD_H +#endif + +#ifdef HAVE_STDARG_H /* may be set to #if 1 by ./configure */ +# define Z_HAVE_STDARG_H +#endif + +#ifdef STDC +# ifndef Z_SOLO +# include /* for off_t */ +# endif +#endif + +#if defined(STDC) || defined(Z_HAVE_STDARG_H) +# ifndef Z_SOLO +# include /* for va_list */ +# endif +#endif + +#ifdef _WIN32 +# ifndef Z_SOLO +# include /* for wchar_t */ +# endif +#endif + +/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and + * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even + * though the former does not conform to the LFS document), but considering + * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as + * equivalently requesting no 64-bit operations + */ +#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1 +# undef _LARGEFILE64_SOURCE +#endif + +#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H) +# define Z_HAVE_UNISTD_H +#endif +#ifndef Z_SOLO +# if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE) +# include /* for SEEK_*, off_t, and _LFS64_LARGEFILE */ +# ifdef VMS +# include /* for off_t */ +# endif +# ifndef z_off_t +# define z_off_t off_t +# endif +# endif +#endif + +#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0 +# define Z_LFS64 +#endif + +#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64) +# define Z_LARGE64 +#endif + +#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64) +# define Z_WANT64 +#endif + +#if !defined(SEEK_SET) && !defined(Z_SOLO) +# define SEEK_SET 0 /* Seek from beginning of file. */ +# define SEEK_CUR 1 /* Seek from current position. */ +# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */ +#endif + +#ifndef z_off_t +# define z_off_t long +#endif + +#if !defined(_WIN32) && defined(Z_LARGE64) +# define z_off64_t off64_t +#else +# if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO) +# define z_off64_t __int64 +# else +# define z_off64_t z_off_t +# endif +#endif + +/* MVS linker does not support external names larger than 8 bytes */ +#if defined(__MVS__) + #pragma map(deflateInit_,"DEIN") + #pragma map(deflateInit2_,"DEIN2") + #pragma map(deflateEnd,"DEEND") + #pragma map(deflateBound,"DEBND") + #pragma map(inflateInit_,"ININ") + #pragma map(inflateInit2_,"ININ2") + #pragma map(inflateEnd,"INEND") + #pragma map(inflateSync,"INSY") + #pragma map(inflateSetDictionary,"INSEDI") + #pragma map(compressBound,"CMBND") + #pragma map(inflate_table,"INTABL") + #pragma map(inflate_fast,"INFA") + #pragma map(inflate_copyright,"INCOPY") +#endif + +#endif /* ZCONF_H */ diff --git a/include/compat/zlib/zconf.h.in b/include/compat/zlib/zconf.h.in new file mode 100644 index 0000000..007b644 --- /dev/null +++ b/include/compat/zlib/zconf.h.in @@ -0,0 +1,483 @@ +/* zconf.h -- configuration of the zlib compression library + * Copyright (C) 1995-2013 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* @(#) $Id$ */ + +#ifndef ZCONF_H +#define ZCONF_H + +/* + * If you *really* need a unique prefix for all types and library functions, + * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it. + * Even better than compiling with -DZ_PREFIX would be to use configure to set + * this permanently in zconf.h using "./configure --zprefix". + */ +#ifdef Z_PREFIX /* may be set to #if 1 by ./configure */ +# define Z_PREFIX_SET + +/* all linked symbols */ +# define _dist_code z__dist_code +# define _length_code z__length_code +# define _tr_align z__tr_align +# define _tr_flush_bits z__tr_flush_bits +# define _tr_flush_block z__tr_flush_block +# define _tr_init z__tr_init +# define _tr_stored_block z__tr_stored_block +# define _tr_tally z__tr_tally +# define adler32 z_adler32 +# define adler32_combine z_adler32_combine +# define adler32_combine64 z_adler32_combine64 +# ifndef Z_SOLO +# define compress z_compress +# define compress2 z_compress2 +# define compressBound z_compressBound +# endif +# define crc32 z_crc32 +# define crc32_combine z_crc32_combine +# define crc32_combine64 z_crc32_combine64 +# define deflate z_deflate +# define deflateBound z_deflateBound +# define deflateCopy z_deflateCopy +# define deflateEnd z_deflateEnd +# define deflateInit2_ z_deflateInit2_ +# define deflateInit_ z_deflateInit_ +# define deflateParams z_deflateParams +# define deflatePending z_deflatePending +# define deflatePrime z_deflatePrime +# define deflateReset z_deflateReset +# define deflateResetKeep z_deflateResetKeep +# define deflateSetDictionary z_deflateSetDictionary +# define deflateSetHeader z_deflateSetHeader +# define deflateTune z_deflateTune +# define deflate_copyright z_deflate_copyright +# define get_crc_table z_get_crc_table +# ifndef Z_SOLO +# define gz_error z_gz_error +# define gz_intmax z_gz_intmax +# define gz_strwinerror z_gz_strwinerror +# define gzbuffer z_gzbuffer +# define gzclearerr z_gzclearerr +# define gzclose z_gzclose +# define gzclose_r z_gzclose_r +# define gzclose_w z_gzclose_w +# define gzdirect z_gzdirect +# define gzdopen z_gzdopen +# define gzeof z_gzeof +# define gzerror z_gzerror +# define gzflush z_gzflush +# define gzgetc z_gzgetc +# define gzgetc_ z_gzgetc_ +# define gzgets z_gzgets +# define gzoffset z_gzoffset +# define gzoffset64 z_gzoffset64 +# define gzopen z_gzopen +# define gzopen64 z_gzopen64 +# ifdef _WIN32 +# define gzopen_w z_gzopen_w +# endif +# define gzprintf z_gzprintf +# define gzvprintf z_gzvprintf +# define gzputc z_gzputc +# define gzputs z_gzputs +# define gzread z_gzread +# define gzrewind z_gzrewind +# define gzseek z_gzseek +# define gzseek64 z_gzseek64 +# define gzsetparams z_gzsetparams +# define gztell z_gztell +# define gztell64 z_gztell64 +# define gzungetc z_gzungetc +# define gzwrite z_gzwrite +# endif +# define inflate z_inflate +# define inflateBack z_inflateBack +# define inflateBackEnd z_inflateBackEnd +# define inflateBackInit_ z_inflateBackInit_ +# define inflateCopy z_inflateCopy +# define inflateEnd z_inflateEnd +# define inflateGetHeader z_inflateGetHeader +# define inflateInit2_ z_inflateInit2_ +# define inflateInit_ z_inflateInit_ +# define inflateMark z_inflateMark +# define inflatePrime z_inflatePrime +# define inflateReset z_inflateReset +# define inflateReset2 z_inflateReset2 +# define inflateSetDictionary z_inflateSetDictionary +# define inflateGetDictionary z_inflateGetDictionary +# define inflateSync z_inflateSync +# define inflateSyncPoint z_inflateSyncPoint +# define inflateUndermine z_inflateUndermine +# define inflateResetKeep z_inflateResetKeep +# define inflate_copyright z_inflate_copyright +# define inflate_fast z_inflate_fast +# define inflate_table z_inflate_table +# ifndef Z_SOLO +# define uncompress z_uncompress +# endif +# define zError z_zError +# ifndef Z_SOLO +# define zcalloc z_zcalloc +# define zcfree z_zcfree +# endif +# define zlibCompileFlags z_zlibCompileFlags +# define zlibVersion z_zlibVersion + +/* all zlib typedefs in zlib.h and zconf.h */ +# define Byte z_Byte +# define Bytef z_Bytef +# define alloc_func z_alloc_func +# define charf z_charf +# define free_func z_free_func +# ifndef Z_SOLO +# define gzFile z_gzFile +# endif +# define gz_header z_gz_header +# define gz_headerp z_gz_headerp +# define in_func z_in_func +# define intf z_intf +# define out_func z_out_func +# define uInt z_uInt +# define uIntf z_uIntf +# define uLong z_uLong +# define uLongf z_uLongf +# define voidp z_voidp +# define voidpc z_voidpc +# define voidpf z_voidpf + +/* all zlib structs in zlib.h and zconf.h */ +# define gz_header_s z_gz_header_s +# define internal_state z_internal_state + +#endif + +#if defined(__MSDOS__) && !defined(MSDOS) +# define MSDOS +#endif +#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2) +# define OS2 +#endif +#if defined(_WINDOWS) && !defined(WINDOWS) +# define WINDOWS +#endif +#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__) +# ifndef WIN32 +# define WIN32 +# endif +#endif +#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32) +# if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__) +# ifndef SYS16BIT +# define SYS16BIT +# endif +# endif +#endif + +/* + * Compile with -DMAXSEG_64K if the alloc function cannot allocate more + * than 64k bytes at a time (needed on systems with 16-bit int). + */ +#ifdef SYS16BIT +# define MAXSEG_64K +#endif +#ifdef MSDOS +# define UNALIGNED_OK +#endif + +#ifdef __STDC_VERSION__ +# ifndef STDC +# define STDC +# endif +# if __STDC_VERSION__ >= 199901L +# ifndef STDC99 +# define STDC99 +# endif +# endif +#endif +#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus)) +# define STDC +#endif +#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__)) +# define STDC +#endif +#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32)) +# define STDC +#endif +#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__)) +# define STDC +#endif + +#if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */ +# define STDC +#endif + +#ifndef STDC +# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */ +# define const /* note: need a more gentle solution here */ +# endif +#endif + +#if defined(ZLIB_CONST) && !defined(z_const) +# define z_const const +#else +# define z_const +#endif + +/* Some Mac compilers merge all .h files incorrectly: */ +#if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__) +# define NO_DUMMY_DECL +#endif + +/* Maximum value for memLevel in deflateInit2 */ +#ifndef MAX_MEM_LEVEL +# ifdef MAXSEG_64K +# define MAX_MEM_LEVEL 8 +# else +# define MAX_MEM_LEVEL 9 +# endif +#endif + +/* Maximum value for windowBits in deflateInit2 and inflateInit2. + * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files + * created by gzip. (Files created by minigzip can still be extracted by + * gzip.) + */ +#ifndef MAX_WBITS +# define MAX_WBITS 15 /* 32K LZ77 window */ +#endif + +/* The memory requirements for deflate are (in bytes): + (1 << (windowBits+2)) + (1 << (memLevel+9)) + that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values) + plus a few kilobytes for small objects. For example, if you want to reduce + the default memory requirements from 256K to 128K, compile with + make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7" + Of course this will generally degrade compression (there's no free lunch). + + The memory requirements for inflate are (in bytes) 1 << windowBits + that is, 32K for windowBits=15 (default value) plus a few kilobytes + for small objects. +*/ + + /* Type declarations */ + +#ifndef OF /* function prototypes */ +# ifdef STDC +# define OF(args) args +# else +# define OF(args) () +# endif +#endif + +#ifndef Z_ARG /* function prototypes for stdarg */ +# if defined(STDC) || defined(Z_HAVE_STDARG_H) +# define Z_ARG(args) args +# else +# define Z_ARG(args) () +# endif +#endif + +/* The following definitions for FAR are needed only for MSDOS mixed + * model programming (small or medium model with some far allocations). + * This was tested only with MSC; for other MSDOS compilers you may have + * to define NO_MEMCPY in zutil.h. If you don't need the mixed model, + * just define FAR to be empty. + */ +#ifdef SYS16BIT +# if defined(M_I86SM) || defined(M_I86MM) + /* MSC small or medium model */ +# define SMALL_MEDIUM +# ifdef _MSC_VER +# define FAR _far +# else +# define FAR far +# endif +# endif +# if (defined(__SMALL__) || defined(__MEDIUM__)) + /* Turbo C small or medium model */ +# define SMALL_MEDIUM +# ifdef __BORLANDC__ +# define FAR _far +# else +# define FAR far +# endif +# endif +#endif + +#if defined(WINDOWS) || defined(WIN32) + /* If building or using zlib as a DLL, define ZLIB_DLL. + * This is not mandatory, but it offers a little performance increase. + */ +# ifdef ZLIB_DLL +# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500)) +# ifdef ZLIB_INTERNAL +# define ZEXTERN extern __declspec(dllexport) +# else +# define ZEXTERN extern __declspec(dllimport) +# endif +# endif +# endif /* ZLIB_DLL */ + /* If building or using zlib with the WINAPI/WINAPIV calling convention, + * define ZLIB_WINAPI. + * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI. + */ +# ifdef ZLIB_WINAPI +# ifdef FAR +# undef FAR +# endif +# include + /* No need for _export, use ZLIB.DEF instead. */ + /* For complete Windows compatibility, use WINAPI, not __stdcall. */ +# endif +#endif + +#ifndef FAR +# define FAR +#endif + +#if !defined(__MACTYPES__) +typedef unsigned char Byte; /* 8 bits */ +#endif +typedef unsigned int uInt; /* 16 bits or more */ +typedef unsigned long uLong; /* 32 bits or more */ + +#ifdef SMALL_MEDIUM + /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */ +# define Bytef Byte FAR +#else + typedef Byte FAR Bytef; +#endif +typedef char FAR charf; +typedef int FAR intf; +typedef uInt FAR uIntf; +typedef uLong FAR uLongf; + +#ifdef STDC + typedef void const *voidpc; + typedef void FAR *voidpf; + typedef void *voidp; +#else + typedef Byte const *voidpc; + typedef Byte FAR *voidpf; + typedef Byte *voidp; +#endif + +#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC) +# include +# if (UINT_MAX == 0xffffffffUL) +# define Z_U4 unsigned +# elif (ULONG_MAX == 0xffffffffUL) +# define Z_U4 unsigned long +# elif (USHRT_MAX == 0xffffffffUL) +# define Z_U4 unsigned short +# endif +#endif + +#ifdef Z_U4 + typedef Z_U4 z_crc_t; +#else + typedef unsigned long z_crc_t; +#endif + +#ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */ +# define Z_HAVE_UNISTD_H +#endif + +#ifdef HAVE_STDARG_H /* may be set to #if 1 by ./configure */ +# define Z_HAVE_STDARG_H +#endif + +#ifdef STDC +# ifndef Z_SOLO +# include /* for off_t */ +# endif +#endif + +#if defined(STDC) || defined(Z_HAVE_STDARG_H) +# ifndef Z_SOLO +# include /* for va_list */ +# endif +#endif + +#ifdef _WIN32 +# ifndef Z_SOLO +# include /* for wchar_t */ +# endif +#endif + +/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and + * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even + * though the former does not conform to the LFS document), but considering + * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as + * equivalently requesting no 64-bit operations + */ +#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1 +# undef _LARGEFILE64_SOURCE +#endif + +#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H) +# define Z_HAVE_UNISTD_H +#endif +#ifndef Z_SOLO +# if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE) +# include /* for SEEK_*, off_t, and _LFS64_LARGEFILE */ +# ifdef VMS +# include /* for off_t */ +# endif +# ifndef z_off_t +# define z_off_t off_t +# endif +# endif +#endif + +#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0 +# define Z_LFS64 +#endif + +#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64) +# define Z_LARGE64 +#endif + +#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64) +# define Z_WANT64 +#endif + +#if !defined(SEEK_SET) && !defined(Z_SOLO) +# define SEEK_SET 0 /* Seek from beginning of file. */ +# define SEEK_CUR 1 /* Seek from current position. */ +# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */ +#endif + +#ifndef z_off_t +# define z_off_t long +#endif + +#if !defined(_WIN32) && defined(Z_LARGE64) +# define z_off64_t off64_t +#else +# if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO) +# define z_off64_t __int64 +# else +# define z_off64_t z_off_t +# endif +#endif + +/* MVS linker does not support external names larger than 8 bytes */ +#if defined(__MVS__) + #pragma map(deflateInit_,"DEIN") + #pragma map(deflateInit2_,"DEIN2") + #pragma map(deflateEnd,"DEEND") + #pragma map(deflateBound,"DEBND") + #pragma map(inflateInit_,"ININ") + #pragma map(inflateInit2_,"ININ2") + #pragma map(inflateEnd,"INEND") + #pragma map(inflateSync,"INSY") + #pragma map(inflateSetDictionary,"INSEDI") + #pragma map(compressBound,"CMBND") + #pragma map(inflate_table,"INTABL") + #pragma map(inflate_fast,"INFA") + #pragma map(inflate_copyright,"INCOPY") +#endif + +#endif /* ZCONF_H */ diff --git a/include/compat/zlib/zlib.h b/include/compat/zlib/zlib.h new file mode 100644 index 0000000..94110af --- /dev/null +++ b/include/compat/zlib/zlib.h @@ -0,0 +1,1771 @@ +#ifndef _COMPAT_ZLIB_H +#define _COMPAT_ZLIB_H + +#ifdef WANT_ZLIB + +#ifdef RARCH_INTERNAL +#include "zconf.h.in" +#endif + +/* zlib.h -- interface of the 'zlib' general purpose compression library + version 1.2.8, April 28th, 2013 + + Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. + + Jean-loup Gailly Mark Adler + jloup@gzip.org madler@alumni.caltech.edu + + The data format used by the zlib library is described by RFCs (Request for + Comments) 1950 to 1952 in the files http://tools.ietf.org/html/rfc1950 + (zlib format), rfc1951 (deflate format) and rfc1952 (gzip format). +*/ + +#ifndef ZLIB_H +#define ZLIB_H + +#include +#include "zconf.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define ZLIB_VERSION "1.2.8" +#define ZLIB_VERNUM 0x1280 +#define ZLIB_VER_MAJOR 1 +#define ZLIB_VER_MINOR 2 +#define ZLIB_VER_REVISION 8 +#define ZLIB_VER_SUBREVISION 0 + +/* + The 'zlib' compression library provides in-memory compression and + decompression functions, including integrity checks of the uncompressed data. + This version of the library supports only one compression method (deflation) + but other algorithms will be added later and will have the same stream + interface. + + Compression can be done in a single step if the buffers are large enough, + or can be done by repeated calls of the compression function. In the latter + case, the application must provide more input and/or consume the output + (providing more output space) before each call. + + The compressed data format used by default by the in-memory functions is + the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped + around a deflate stream, which is itself documented in RFC 1951. + + The library also supports reading and writing files in gzip (.gz) format + with an interface similar to that of stdio using the functions that start + with "gz". The gzip format is different from the zlib format. gzip is a + gzip wrapper, documented in RFC 1952, wrapped around a deflate stream. + + This library can optionally read and write gzip streams in memory as well. + + The zlib format was designed to be compact and fast for use in memory + and on communications channels. The gzip format was designed for single- + file compression on file systems, has a larger header than zlib to maintain + directory information, and uses a different, slower check method than zlib. + + The library does not install any signal handler. The decoder checks + the consistency of the compressed data, so the library should never crash + even in case of corrupted input. +*/ + +typedef voidpf (*alloc_func) (voidpf opaque, uInt items, uInt size); +typedef void (*free_func) (voidpf opaque, voidpf address); + +struct internal_state; + +typedef struct z_stream_s { + z_const Bytef *next_in; /* next input byte */ + uInt avail_in; /* number of bytes available at next_in */ + uLong total_in; /* total number of input bytes read so far */ + + Bytef *next_out; /* next output byte should be put there */ + uInt avail_out; /* remaining free space at next_out */ + uLong total_out; /* total number of bytes output so far */ + + z_const char *msg; /* last error message, NULL if no error */ + void *state; /* not visible by applications */ + + alloc_func zalloc; /* used to allocate the internal state */ + free_func zfree; /* used to free the internal state */ + voidpf opaque; /* private data object passed to zalloc and zfree */ + + int data_type; /* best guess about the data type: binary or text */ + uLong adler; /* adler32 value of the uncompressed data */ + uLong reserved; /* reserved for future use */ +} z_stream; + +typedef z_stream FAR *z_streamp; + +/* + gzip header information passed to and from zlib routines. See RFC 1952 + for more details on the meanings of these fields. +*/ +typedef struct gz_header_s { + int text; /* true if compressed data believed to be text */ + uLong time; /* modification time */ + int xflags; /* extra flags (not used when writing a gzip file) */ + int os; /* operating system */ + Bytef *extra; /* pointer to extra field or Z_NULL if none */ + uInt extra_len; /* extra field length (valid if extra != Z_NULL) */ + uInt extra_max; /* space at extra (only when reading header) */ + Bytef *name; /* pointer to zero-terminated file name or Z_NULL */ + uInt name_max; /* space at name (only when reading header) */ + Bytef *comment; /* pointer to zero-terminated comment or Z_NULL */ + uInt comm_max; /* space at comment (only when reading header) */ + int hcrc; /* true if there was or will be a header crc */ + int done; /* true when done reading gzip header (not used + when writing a gzip file) */ +} gz_header; + +typedef gz_header FAR *gz_headerp; + +/* + The application must update next_in and avail_in when avail_in has dropped + to zero. It must update next_out and avail_out when avail_out has dropped + to zero. The application must initialize zalloc, zfree and opaque before + calling the init function. All other fields are set by the compression + library and must not be updated by the application. + + The opaque value provided by the application will be passed as the first + parameter for calls of zalloc and zfree. This can be useful for custom + memory management. The compression library attaches no meaning to the + opaque value. + + zalloc must return Z_NULL if there is not enough memory for the object. + If zlib is used in a multi-threaded application, zalloc and zfree must be + thread safe. + + On 16-bit systems, the functions zalloc and zfree must be able to allocate + exactly 65536 bytes, but will not be required to allocate more than this if + the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS, pointers + returned by zalloc for objects of exactly 65536 bytes *must* have their + offset normalized to zero. The default allocation function provided by this + library ensures this (see zutil.c). To reduce memory requirements and avoid + any allocation of 64K objects, at the expense of compression ratio, compile + the library with -DMAX_WBITS=14 (see zconf.h). + + The fields total_in and total_out can be used for statistics or progress + reports. After compression, total_in holds the total size of the + uncompressed data and may be saved for use in the decompressor (particularly + if the decompressor wants to decompress everything in a single step). +*/ + + /* constants */ + +#define Z_NO_FLUSH 0 +#define Z_PARTIAL_FLUSH 1 +#define Z_SYNC_FLUSH 2 +#define Z_FULL_FLUSH 3 +#define Z_FINISH 4 +#define Z_BLOCK 5 +#define Z_TREES 6 +/* Allowed flush values; see deflate() and inflate() below for details */ + +#define Z_OK 0 +#define Z_STREAM_END 1 +#define Z_NEED_DICT 2 +#define Z_ERRNO (-1) +#define Z_STREAM_ERROR (-2) +#define Z_DATA_ERROR (-3) +#define Z_MEM_ERROR (-4) +#define Z_BUF_ERROR (-5) +#define Z_VERSION_ERROR (-6) +/* Return codes for the compression/decompression functions. Negative values + * are errors, positive values are used for special but normal events. + */ + +#define Z_NO_COMPRESSION 0 +#define Z_BEST_SPEED 1 +#define Z_BEST_COMPRESSION 9 +#define Z_DEFAULT_COMPRESSION (-1) +/* compression levels */ + +#define Z_FILTERED 1 +#define Z_HUFFMAN_ONLY 2 +#define Z_RLE 3 +#define Z_FIXED 4 +#define Z_DEFAULT_STRATEGY 0 +/* compression strategy; see deflateInit2() below for details */ + +#define Z_BINARY 0 +#define Z_TEXT 1 +#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */ +#define Z_UNKNOWN 2 +/* Possible values of the data_type field (though see inflate()) */ + +#define Z_DEFLATED 8 +/* The deflate compression method (the only one supported in this version) */ + +#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */ + +#define zlib_version zlibVersion() +/* for compatibility with versions < 1.0.2 */ + + /* basic functions */ + + const char * zlibVersion (void); +/* The application can compare zlibVersion and ZLIB_VERSION for consistency. + If the first character differs, the library code actually used is not + compatible with the zlib.h header file used by the application. This check + is automatically made by deflateInit and inflateInit. + */ + +/* + int deflateInit (z_streamp strm, int level); + + Initializes the internal stream state for compression. The fields + zalloc, zfree and opaque must be initialized before by the caller. If + zalloc and zfree are set to Z_NULL, deflateInit updates them to use default + allocation functions. + + The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9: + 1 gives best speed, 9 gives best compression, 0 gives no compression at all + (the input data is simply copied a block at a time). Z_DEFAULT_COMPRESSION + requests a default compromise between speed and compression (currently + equivalent to level 6). + + deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_STREAM_ERROR if level is not a valid compression level, or + Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible + with the version assumed by the caller (ZLIB_VERSION). msg is set to null + if there is no error message. deflateInit does not perform any compression: + this will be done by deflate(). +*/ + + int deflate (z_streamp strm, int flush); +/* + deflate compresses as much data as possible, and stops when the input + buffer becomes empty or the output buffer becomes full. It may introduce + some output latency (reading input without producing any output) except when + forced to flush. + + The detailed semantics are as follows. deflate performs one or both of the + following actions: + + - Compress more input starting at next_in and update next_in and avail_in + accordingly. If not all input can be processed (because there is not + enough room in the output buffer), next_in and avail_in are updated and + processing will resume at this point for the next call of deflate(). + + - Provide more output starting at next_out and update next_out and avail_out + accordingly. This action is forced if the parameter flush is non zero. + Forcing flush frequently degrades the compression ratio, so this parameter + should be set only when necessary (in interactive applications). Some + output may be provided even if flush is not set. + + Before the call of deflate(), the application should ensure that at least + one of the actions is possible, by providing more input and/or consuming more + output, and updating avail_in or avail_out accordingly; avail_out should + never be zero before the call. The application can consume the compressed + output when it wants, for example when the output buffer is full (avail_out + == 0), or after each call of deflate(). If deflate returns Z_OK and with + zero avail_out, it must be called again after making room in the output + buffer because there might be more output pending. + + Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to + decide how much data to accumulate before producing output, in order to + maximize compression. + + If the parameter flush is set to Z_SYNC_FLUSH, all pending output is + flushed to the output buffer and the output is aligned on a byte boundary, so + that the decompressor can get all input data available so far. (In + particular avail_in is zero after the call if enough output space has been + provided before the call.) Flushing may degrade compression for some + compression algorithms and so it should be used only when necessary. This + completes the current deflate block and follows it with an empty stored block + that is three bits plus filler bits to the next byte, followed by four bytes + (00 00 ff ff). + + If flush is set to Z_PARTIAL_FLUSH, all pending output is flushed to the + output buffer, but the output is not aligned to a byte boundary. All of the + input data so far will be available to the decompressor, as for Z_SYNC_FLUSH. + This completes the current deflate block and follows it with an empty fixed + codes block that is 10 bits long. This assures that enough bytes are output + in order for the decompressor to finish the block before the empty fixed code + block. + + If flush is set to Z_BLOCK, a deflate block is completed and emitted, as + for Z_SYNC_FLUSH, but the output is not aligned on a byte boundary, and up to + seven bits of the current block are held to be written as the next byte after + the next deflate block is completed. In this case, the decompressor may not + be provided enough bits at this point in order to complete decompression of + the data provided so far to the compressor. It may need to wait for the next + block to be emitted. This is for advanced applications that need to control + the emission of deflate blocks. + + If flush is set to Z_FULL_FLUSH, all output is flushed as with + Z_SYNC_FLUSH, and the compression state is reset so that decompression can + restart from this point if previous compressed data has been damaged or if + random access is desired. Using Z_FULL_FLUSH too often can seriously degrade + compression. + + If deflate returns with avail_out == 0, this function must be called again + with the same value of the flush parameter and more output space (updated + avail_out), until the flush is complete (deflate returns with non-zero + avail_out). In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that + avail_out is greater than six to avoid repeated flush markers due to + avail_out == 0 on return. + + If the parameter flush is set to Z_FINISH, pending input is processed, + pending output is flushed and deflate returns with Z_STREAM_END if there was + enough output space; if deflate returns with Z_OK, this function must be + called again with Z_FINISH and more output space (updated avail_out) but no + more input data, until it returns with Z_STREAM_END or an error. After + deflate has returned Z_STREAM_END, the only possible operations on the stream + are deflateReset or deflateEnd. + + Z_FINISH can be used immediately after deflateInit if all the compression + is to be done in a single step. In this case, avail_out must be at least the + value returned by deflateBound (see below). Then deflate is guaranteed to + return Z_STREAM_END. If not enough output space is provided, deflate will + not return Z_STREAM_END, and it must be called again as described above. + + deflate() sets strm->adler to the adler32 checksum of all input read + so far (that is, total_in bytes). + + deflate() may update strm->data_type if it can make a good guess about + the input data type (Z_BINARY or Z_TEXT). In doubt, the data is considered + binary. This field is only for information purposes and does not affect the + compression algorithm in any manner. + + deflate() returns Z_OK if some progress has been made (more input + processed or more output produced), Z_STREAM_END if all input has been + consumed and all output has been produced (only when flush is set to + Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example + if next_in or next_out was Z_NULL), Z_BUF_ERROR if no progress is possible + (for example avail_in or avail_out was zero). Note that Z_BUF_ERROR is not + fatal, and deflate() can be called again with more input and more output + space to continue compressing. +*/ + + int deflateEnd (z_streamp strm); +/* + All dynamically allocated data structures for this stream are freed. + This function discards any unprocessed input and does not flush any pending + output. + + deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the + stream state was inconsistent, Z_DATA_ERROR if the stream was freed + prematurely (some input or output was discarded). In the error case, msg + may be set but then points to a static string (which must not be + deallocated). +*/ + +/* + int inflateInit (z_streamp strm); + + Initializes the internal stream state for decompression. The fields + next_in, avail_in, zalloc, zfree and opaque must be initialized before by + the caller. If next_in is not Z_NULL and avail_in is large enough (the + exact value depends on the compression method), inflateInit determines the + compression method from the zlib header and allocates all data structures + accordingly; otherwise the allocation will be deferred to the first call of + inflate. If zalloc and zfree are set to Z_NULL, inflateInit updates them to + use default allocation functions. + + inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_VERSION_ERROR if the zlib library version is incompatible with the + version assumed by the caller, or Z_STREAM_ERROR if the parameters are + invalid, such as a null pointer to the structure. msg is set to null if + there is no error message. inflateInit does not perform any decompression + apart from possibly reading the zlib header if present: actual decompression + will be done by inflate(). (So next_in and avail_in may be modified, but + next_out and avail_out are unused and unchanged.) The current implementation + of inflateInit() does not process any header information -- that is deferred + until inflate() is called. +*/ + + int inflate (z_streamp strm, int flush); +/* + inflate decompresses as much data as possible, and stops when the input + buffer becomes empty or the output buffer becomes full. It may introduce + some output latency (reading input without producing any output) except when + forced to flush. + + The detailed semantics are as follows. inflate performs one or both of the + following actions: + + - Decompress more input starting at next_in and update next_in and avail_in + accordingly. If not all input can be processed (because there is not + enough room in the output buffer), next_in is updated and processing will + resume at this point for the next call of inflate(). + + - Provide more output starting at next_out and update next_out and avail_out + accordingly. inflate() provides as much output as possible, until there is + no more input data or no more space in the output buffer (see below about + the flush parameter). + + Before the call of inflate(), the application should ensure that at least + one of the actions is possible, by providing more input and/or consuming more + output, and updating the next_* and avail_* values accordingly. The + application can consume the uncompressed output when it wants, for example + when the output buffer is full (avail_out == 0), or after each call of + inflate(). If inflate returns Z_OK and with zero avail_out, it must be + called again after making room in the output buffer because there might be + more output pending. + + The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH, Z_FINISH, + Z_BLOCK, or Z_TREES. Z_SYNC_FLUSH requests that inflate() flush as much + output as possible to the output buffer. Z_BLOCK requests that inflate() + stop if and when it gets to the next deflate block boundary. When decoding + the zlib or gzip format, this will cause inflate() to return immediately + after the header and before the first block. When doing a raw inflate, + inflate() will go ahead and process the first block, and will return when it + gets to the end of that block, or when it runs out of data. + + The Z_BLOCK option assists in appending to or combining deflate streams. + Also to assist in this, on return inflate() will set strm->data_type to the + number of unused bits in the last byte taken from strm->next_in, plus 64 if + inflate() is currently decoding the last block in the deflate stream, plus + 128 if inflate() returned immediately after decoding an end-of-block code or + decoding the complete header up to just before the first byte of the deflate + stream. The end-of-block will not be indicated until all of the uncompressed + data from that block has been written to strm->next_out. The number of + unused bits may in general be greater than seven, except when bit 7 of + data_type is set, in which case the number of unused bits will be less than + eight. data_type is set as noted here every time inflate() returns for all + flush options, and so can be used to determine the amount of currently + consumed input in bits. + + The Z_TREES option behaves as Z_BLOCK does, but it also returns when the + end of each deflate block header is reached, before any actual data in that + block is decoded. This allows the caller to determine the length of the + deflate block header for later use in random access within a deflate block. + 256 is added to the value of strm->data_type when inflate() returns + immediately after reaching the end of the deflate block header. + + inflate() should normally be called until it returns Z_STREAM_END or an + error. However if all decompression is to be performed in a single step (a + single call of inflate), the parameter flush should be set to Z_FINISH. In + this case all pending input is processed and all pending output is flushed; + avail_out must be large enough to hold all of the uncompressed data for the + operation to complete. (The size of the uncompressed data may have been + saved by the compressor for this purpose.) The use of Z_FINISH is not + required to perform an inflation in one step. However it may be used to + inform inflate that a faster approach can be used for the single inflate() + call. Z_FINISH also informs inflate to not maintain a sliding window if the + stream completes, which reduces inflate's memory footprint. If the stream + does not complete, either because not all of the stream is provided or not + enough output space is provided, then a sliding window will be allocated and + inflate() can be called again to continue the operation as if Z_NO_FLUSH had + been used. + + In this implementation, inflate() always flushes as much output as + possible to the output buffer, and always uses the faster approach on the + first call. So the effects of the flush parameter in this implementation are + on the return value of inflate() as noted below, when inflate() returns early + when Z_BLOCK or Z_TREES is used, and when inflate() avoids the allocation of + memory for a sliding window when Z_FINISH is used. + + If a preset dictionary is needed after this call (see inflateSetDictionary + below), inflate sets strm->adler to the Adler-32 checksum of the dictionary + chosen by the compressor and returns Z_NEED_DICT; otherwise it sets + strm->adler to the Adler-32 checksum of all output produced so far (that is, + total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described + below. At the end of the stream, inflate() checks that its computed adler32 + checksum is equal to that saved by the compressor and returns Z_STREAM_END + only if the checksum is correct. + + inflate() can decompress and check either zlib-wrapped or gzip-wrapped + deflate data. The header type is detected automatically, if requested when + initializing with inflateInit2(). Any information contained in the gzip + header is not retained, so applications that need that information should + instead use raw inflate, see inflateInit2() below, or inflateBack() and + perform their own processing of the gzip header and trailer. When processing + gzip-wrapped deflate data, strm->adler32 is set to the CRC-32 of the output + producted so far. The CRC-32 is checked against the gzip trailer. + + inflate() returns Z_OK if some progress has been made (more input processed + or more output produced), Z_STREAM_END if the end of the compressed data has + been reached and all uncompressed output has been produced, Z_NEED_DICT if a + preset dictionary is needed at this point, Z_DATA_ERROR if the input data was + corrupted (input stream not conforming to the zlib format or incorrect check + value), Z_STREAM_ERROR if the stream structure was inconsistent (for example + next_in or next_out was Z_NULL), Z_MEM_ERROR if there was not enough memory, + Z_BUF_ERROR if no progress is possible or if there was not enough room in the + output buffer when Z_FINISH is used. Note that Z_BUF_ERROR is not fatal, and + inflate() can be called again with more input and more output space to + continue decompressing. If Z_DATA_ERROR is returned, the application may + then call inflateSync() to look for a good compression block if a partial + recovery of the data is desired. +*/ + + int inflateEnd (z_streamp strm); +/* + All dynamically allocated data structures for this stream are freed. + This function discards any unprocessed input and does not flush any pending + output. + + inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state + was inconsistent. In the error case, msg may be set but then points to a + static string (which must not be deallocated). +*/ + + /* Advanced functions */ + +/* + The following functions are needed only in some special applications. +*/ + +/* + int deflateInit2 (z_streamp strm, + int level, + int method, + int windowBits, + int memLevel, + int strategy); + + This is another version of deflateInit with more compression options. The + fields next_in, zalloc, zfree and opaque must be initialized before by the + caller. + + The method parameter is the compression method. It must be Z_DEFLATED in + this version of the library. + + The windowBits parameter is the base two logarithm of the window size + (the size of the history buffer). It should be in the range 8..15 for this + version of the library. Larger values of this parameter result in better + compression at the expense of memory usage. The default value is 15 if + deflateInit is used instead. + + windowBits can also be -8..-15 for raw deflate. In this case, -windowBits + determines the window size. deflate() will then generate raw deflate data + with no zlib header or trailer, and will not compute an adler32 check value. + + windowBits can also be greater than 15 for optional gzip encoding. Add + 16 to windowBits to write a simple gzip header and trailer around the + compressed data instead of a zlib wrapper. The gzip header will have no + file name, no extra data, no comment, no modification time (set to zero), no + header crc, and the operating system will be set to 255 (unknown). If a + gzip stream is being written, strm->adler is a crc32 instead of an adler32. + + The memLevel parameter specifies how much memory should be allocated + for the internal compression state. memLevel=1 uses minimum memory but is + slow and reduces compression ratio; memLevel=9 uses maximum memory for + optimal speed. The default value is 8. See zconf.h for total memory usage + as a function of windowBits and memLevel. + + The strategy parameter is used to tune the compression algorithm. Use the + value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a + filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no + string match), or Z_RLE to limit match distances to one (run-length + encoding). Filtered data consists mostly of small values with a somewhat + random distribution. In this case, the compression algorithm is tuned to + compress them better. The effect of Z_FILTERED is to force more Huffman + coding and less string matching; it is somewhat intermediate between + Z_DEFAULT_STRATEGY and Z_HUFFMAN_ONLY. Z_RLE is designed to be almost as + fast as Z_HUFFMAN_ONLY, but give better compression for PNG image data. The + strategy parameter only affects the compression ratio but not the + correctness of the compressed output even if it is not set appropriately. + Z_FIXED prevents the use of dynamic Huffman codes, allowing for a simpler + decoder for special applications. + + deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_STREAM_ERROR if any parameter is invalid (such as an invalid + method), or Z_VERSION_ERROR if the zlib library version (zlib_version) is + incompatible with the version assumed by the caller (ZLIB_VERSION). msg is + set to null if there is no error message. deflateInit2 does not perform any + compression: this will be done by deflate(). +*/ + + int deflateSetDictionary (z_streamp strm, + const Bytef *dictionary, + uInt dictLength); +/* + Initializes the compression dictionary from the given byte sequence + without producing any compressed output. When using the zlib format, this + function must be called immediately after deflateInit, deflateInit2 or + deflateReset, and before any call of deflate. When doing raw deflate, this + function must be called either before any call of deflate, or immediately + after the completion of a deflate block, i.e. after all input has been + consumed and all output has been delivered when using any of the flush + options Z_BLOCK, Z_PARTIAL_FLUSH, Z_SYNC_FLUSH, or Z_FULL_FLUSH. The + compressor and decompressor must use exactly the same dictionary (see + inflateSetDictionary). + + The dictionary should consist of strings (byte sequences) that are likely + to be encountered later in the data to be compressed, with the most commonly + used strings preferably put towards the end of the dictionary. Using a + dictionary is most useful when the data to be compressed is short and can be + predicted with good accuracy; the data can then be compressed better than + with the default empty dictionary. + + Depending on the size of the compression data structures selected by + deflateInit or deflateInit2, a part of the dictionary may in effect be + discarded, for example if the dictionary is larger than the window size + provided in deflateInit or deflateInit2. Thus the strings most likely to be + useful should be put at the end of the dictionary, not at the front. In + addition, the current implementation of deflate will use at most the window + size minus 262 bytes of the provided dictionary. + + Upon return of this function, strm->adler is set to the adler32 value + of the dictionary; the decompressor may later use this value to determine + which dictionary has been used by the compressor. (The adler32 value + applies to the whole dictionary even if only a subset of the dictionary is + actually used by the compressor.) If a raw deflate was requested, then the + adler32 value is not computed and strm->adler is not set. + + deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a + parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is + inconsistent (for example if deflate has already been called for this stream + or if not at a block boundary for raw deflate). deflateSetDictionary does + not perform any compression: this will be done by deflate(). +*/ + + int deflateCopy (z_streamp dest, + z_streamp source); +/* + Sets the destination stream as a complete copy of the source stream. + + This function can be useful when several compression strategies will be + tried, for example when there are several ways of pre-processing the input + data with a filter. The streams that will be discarded should then be freed + by calling deflateEnd. Note that deflateCopy duplicates the internal + compression state which can be quite large, so this strategy is slow and can + consume lots of memory. + + deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_STREAM_ERROR if the source stream state was inconsistent + (such as zalloc being Z_NULL). msg is left unchanged in both source and + destination. +*/ + + int deflateReset (z_streamp strm); +/* + This function is equivalent to deflateEnd followed by deflateInit, + but does not free and reallocate all the internal compression state. The + stream will keep the same compression level and any other attributes that + may have been set by deflateInit2. + + deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent (such as zalloc or state being Z_NULL). +*/ + + int deflateParams (z_streamp strm, + int level, + int strategy); +/* + Dynamically update the compression level and compression strategy. The + interpretation of level and strategy is as in deflateInit2. This can be + used to switch between compression and straight copy of the input data, or + to switch to a different kind of input data requiring a different strategy. + If the compression level is changed, the input available so far is + compressed with the old level (and may be flushed); the new level will take + effect only at the next call of deflate(). + + Before the call of deflateParams, the stream state must be set as for + a call of deflate(), since the currently available input may have to be + compressed and flushed. In particular, strm->avail_out must be non-zero. + + deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source + stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR if + strm->avail_out was zero. +*/ + + int deflateTune (z_streamp strm, + int good_length, + int max_lazy, + int nice_length, + int max_chain); +/* + Fine tune deflate's internal compression parameters. This should only be + used by someone who understands the algorithm used by zlib's deflate for + searching for the best matching string, and even then only by the most + fanatic optimizer trying to squeeze out the last compressed bit for their + specific input data. Read the deflate.c source code for the meaning of the + max_lazy, good_length, nice_length, and max_chain parameters. + + deflateTune() can be called after deflateInit() or deflateInit2(), and + returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream. + */ + + uLong deflateBound (z_streamp strm, + uLong sourceLen); +/* + deflateBound() returns an upper bound on the compressed size after + deflation of sourceLen bytes. It must be called after deflateInit() or + deflateInit2(), and after deflateSetHeader(), if used. This would be used + to allocate an output buffer for deflation in a single pass, and so would be + called before deflate(). If that first deflate() call is provided the + sourceLen input bytes, an output buffer allocated to the size returned by + deflateBound(), and the flush value Z_FINISH, then deflate() is guaranteed + to return Z_STREAM_END. Note that it is possible for the compressed size to + be larger than the value returned by deflateBound() if flush options other + than Z_FINISH or Z_NO_FLUSH are used. +*/ + + int deflatePending (z_streamp strm, + unsigned *pending, + int *bits); +/* + deflatePending() returns the number of bytes and bits of output that have + been generated, but not yet provided in the available output. The bytes not + provided would be due to the available output space having being consumed. + The number of bits of output not provided are between 0 and 7, where they + await more bits to join them in order to fill out a full byte. If pending + or bits are Z_NULL, then those values are not set. + + deflatePending returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent. + */ + + int deflatePrime (z_streamp strm, + int bits, + int value); +/* + deflatePrime() inserts bits in the deflate output stream. The intent + is that this function is used to start off the deflate output with the bits + leftover from a previous deflate stream when appending to it. As such, this + function can only be used for raw deflate, and must be used before the first + deflate() call after a deflateInit2() or deflateReset(). bits must be less + than or equal to 16, and that many of the least significant bits of value + will be inserted in the output. + + deflatePrime returns Z_OK if success, Z_BUF_ERROR if there was not enough + room in the internal buffer to insert the bits, or Z_STREAM_ERROR if the + source stream state was inconsistent. +*/ + + int deflateSetHeader (z_streamp strm, + gz_headerp head); +/* + deflateSetHeader() provides gzip header information for when a gzip + stream is requested by deflateInit2(). deflateSetHeader() may be called + after deflateInit2() or deflateReset() and before the first call of + deflate(). The text, time, os, extra field, name, and comment information + in the provided gz_header structure are written to the gzip header (xflag is + ignored -- the extra flags are set according to the compression level). The + caller must assure that, if not Z_NULL, name and comment are terminated with + a zero byte, and that if extra is not Z_NULL, that extra_len bytes are + available there. If hcrc is true, a gzip header crc is included. Note that + the current versions of the command-line version of gzip (up through version + 1.3.x) do not support header crc's, and will report that it is a "multi-part + gzip file" and give up. + + If deflateSetHeader is not used, the default gzip header has text false, + the time set to zero, and os set to 255, with no extra, name, or comment + fields. The gzip header is returned to the default state by deflateReset(). + + deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent. +*/ + +/* + int inflateInit2 (z_streamp strm, + int windowBits); + + This is another version of inflateInit with an extra parameter. The + fields next_in, avail_in, zalloc, zfree and opaque must be initialized + before by the caller. + + The windowBits parameter is the base two logarithm of the maximum window + size (the size of the history buffer). It should be in the range 8..15 for + this version of the library. The default value is 15 if inflateInit is used + instead. windowBits must be greater than or equal to the windowBits value + provided to deflateInit2() while compressing, or it must be equal to 15 if + deflateInit2() was not used. If a compressed stream with a larger window + size is given as input, inflate() will return with the error code + Z_DATA_ERROR instead of trying to allocate a larger window. + + windowBits can also be zero to request that inflate use the window size in + the zlib header of the compressed stream. + + windowBits can also be -8..-15 for raw inflate. In this case, -windowBits + determines the window size. inflate() will then process raw deflate data, + not looking for a zlib or gzip header, not generating a check value, and not + looking for any check values for comparison at the end of the stream. This + is for use with other formats that use the deflate compressed data format + such as zip. Those formats provide their own check values. If a custom + format is developed using the raw deflate format for compressed data, it is + recommended that a check value such as an adler32 or a crc32 be applied to + the uncompressed data as is done in the zlib, gzip, and zip formats. For + most applications, the zlib format should be used as is. Note that comments + above on the use in deflateInit2() applies to the magnitude of windowBits. + + windowBits can also be greater than 15 for optional gzip decoding. Add + 32 to windowBits to enable zlib and gzip decoding with automatic header + detection, or add 16 to decode only the gzip format (the zlib format will + return a Z_DATA_ERROR). If a gzip stream is being decoded, strm->adler is a + crc32 instead of an adler32. + + inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_VERSION_ERROR if the zlib library version is incompatible with the + version assumed by the caller, or Z_STREAM_ERROR if the parameters are + invalid, such as a null pointer to the structure. msg is set to null if + there is no error message. inflateInit2 does not perform any decompression + apart from possibly reading the zlib header if present: actual decompression + will be done by inflate(). (So next_in and avail_in may be modified, but + next_out and avail_out are unused and unchanged.) The current implementation + of inflateInit2() does not process any header information -- that is + deferred until inflate() is called. +*/ + + int inflateSetDictionary (z_streamp strm, + const Bytef *dictionary, + uInt dictLength); +/* + Initializes the decompression dictionary from the given uncompressed byte + sequence. This function must be called immediately after a call of inflate, + if that call returned Z_NEED_DICT. The dictionary chosen by the compressor + can be determined from the adler32 value returned by that call of inflate. + The compressor and decompressor must use exactly the same dictionary (see + deflateSetDictionary). For raw inflate, this function can be called at any + time to set the dictionary. If the provided dictionary is smaller than the + window and there is already data in the window, then the provided dictionary + will amend what's there. The application must insure that the dictionary + that was used for compression is provided. + + inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a + parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is + inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the + expected one (incorrect adler32 value). inflateSetDictionary does not + perform any decompression: this will be done by subsequent calls of + inflate(). +*/ + + int inflateGetDictionary (z_streamp strm, + Bytef *dictionary, + uInt *dictLength); +/* + Returns the sliding dictionary being maintained by inflate. dictLength is + set to the number of bytes in the dictionary, and that many bytes are copied + to dictionary. dictionary must have enough space, where 32768 bytes is + always enough. If inflateGetDictionary() is called with dictionary equal to + Z_NULL, then only the dictionary length is returned, and nothing is copied. + Similary, if dictLength is Z_NULL, then it is not set. + + inflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the + stream state is inconsistent. +*/ + + int inflateSync (z_streamp strm); +/* + Skips invalid compressed data until a possible full flush point (see above + for the description of deflate with Z_FULL_FLUSH) can be found, or until all + available input is skipped. No output is provided. + + inflateSync searches for a 00 00 FF FF pattern in the compressed data. + All full flush points have this pattern, but not all occurrences of this + pattern are full flush points. + + inflateSync returns Z_OK if a possible full flush point has been found, + Z_BUF_ERROR if no more input was provided, Z_DATA_ERROR if no flush point + has been found, or Z_STREAM_ERROR if the stream structure was inconsistent. + In the success case, the application may save the current current value of + total_in which indicates where valid compressed data was found. In the + error case, the application may repeatedly call inflateSync, providing more + input each time, until success or end of the input data. +*/ + + int inflateCopy (z_streamp dest, + z_streamp source); +/* + Sets the destination stream as a complete copy of the source stream. + + This function can be useful when randomly accessing a large stream. The + first pass through the stream can periodically record the inflate state, + allowing restarting inflate at those points when randomly accessing the + stream. + + inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_STREAM_ERROR if the source stream state was inconsistent + (such as zalloc being Z_NULL). msg is left unchanged in both source and + destination. +*/ + + int inflateReset (z_streamp strm); +/* + This function is equivalent to inflateEnd followed by inflateInit, + but does not free and reallocate all the internal decompression state. The + stream will keep attributes that may have been set by inflateInit2. + + inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent (such as zalloc or state being Z_NULL). +*/ + + int inflateReset2 (z_streamp strm, + int windowBits); +/* + This function is the same as inflateReset, but it also permits changing + the wrap and window size requests. The windowBits parameter is interpreted + the same as it is for inflateInit2. + + inflateReset2 returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent (such as zalloc or state being Z_NULL), or if + the windowBits parameter is invalid. +*/ + + int inflatePrime (z_streamp strm, + int bits, + int value); +/* + This function inserts bits in the inflate input stream. The intent is + that this function is used to start inflating at a bit position in the + middle of a byte. The provided bits will be used before any bytes are used + from next_in. This function should only be used with raw inflate, and + should be used before the first inflate() call after inflateInit2() or + inflateReset(). bits must be less than or equal to 16, and that many of the + least significant bits of value will be inserted in the input. + + If bits is negative, then the input stream bit buffer is emptied. Then + inflatePrime() can be called again to put bits in the buffer. This is used + to clear out bits leftover after feeding inflate a block description prior + to feeding inflate codes. + + inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent. +*/ + + long inflateMark (z_streamp strm); +/* + This function returns two values, one in the lower 16 bits of the return + value, and the other in the remaining upper bits, obtained by shifting the + return value down 16 bits. If the upper value is -1 and the lower value is + zero, then inflate() is currently decoding information outside of a block. + If the upper value is -1 and the lower value is non-zero, then inflate is in + the middle of a stored block, with the lower value equaling the number of + bytes from the input remaining to copy. If the upper value is not -1, then + it is the number of bits back from the current bit position in the input of + the code (literal or length/distance pair) currently being processed. In + that case the lower value is the number of bytes already emitted for that + code. + + A code is being processed if inflate is waiting for more input to complete + decoding of the code, or if it has completed decoding but is waiting for + more output space to write the literal or match data. + + inflateMark() is used to mark locations in the input data for random + access, which may be at bit positions, and to note those cases where the + output of a code may span boundaries of random access blocks. The current + location in the input stream can be determined from avail_in and data_type + as noted in the description for the Z_BLOCK flush parameter for inflate. + + inflateMark returns the value noted above or -1 << 16 if the provided + source stream state was inconsistent. +*/ + + int inflateGetHeader (z_streamp strm, + gz_headerp head); +/* + inflateGetHeader() requests that gzip header information be stored in the + provided gz_header structure. inflateGetHeader() may be called after + inflateInit2() or inflateReset(), and before the first call of inflate(). + As inflate() processes the gzip stream, head->done is zero until the header + is completed, at which time head->done is set to one. If a zlib stream is + being decoded, then head->done is set to -1 to indicate that there will be + no gzip header information forthcoming. Note that Z_BLOCK or Z_TREES can be + used to force inflate() to return immediately after header processing is + complete and before any actual data is decompressed. + + The text, time, xflags, and os fields are filled in with the gzip header + contents. hcrc is set to true if there is a header CRC. (The header CRC + was valid if done is set to one.) If extra is not Z_NULL, then extra_max + contains the maximum number of bytes to write to extra. Once done is true, + extra_len contains the actual extra field length, and extra contains the + extra field, or that field truncated if extra_max is less than extra_len. + If name is not Z_NULL, then up to name_max characters are written there, + terminated with a zero unless the length is greater than name_max. If + comment is not Z_NULL, then up to comm_max characters are written there, + terminated with a zero unless the length is greater than comm_max. When any + of extra, name, or comment are not Z_NULL and the respective field is not + present in the header, then that field is set to Z_NULL to signal its + absence. This allows the use of deflateSetHeader() with the returned + structure to duplicate the header. However if those fields are set to + allocated memory, then the application will need to save those pointers + elsewhere so that they can be eventually freed. + + If inflateGetHeader is not used, then the header information is simply + discarded. The header is always checked for validity, including the header + CRC if present. inflateReset() will reset the process to discard the header + information. The application would need to call inflateGetHeader() again to + retrieve the header from the next gzip stream. + + inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent. +*/ + +/* + int inflateBackInit (z_streamp strm, int windowBits, + unsigned char FAR *window); + + Initialize the internal stream state for decompression using inflateBack() + calls. The fields zalloc, zfree and opaque in strm must be initialized + before the call. If zalloc and zfree are Z_NULL, then the default library- + derived memory allocation routines are used. windowBits is the base two + logarithm of the window size, in the range 8..15. window is a caller + supplied buffer of that size. Except for special applications where it is + assured that deflate was used with small window sizes, windowBits must be 15 + and a 32K byte window must be supplied to be able to decompress general + deflate streams. + + See inflateBack() for the usage of these routines. + + inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of + the parameters are invalid, Z_MEM_ERROR if the internal state could not be + allocated, or Z_VERSION_ERROR if the version of the library does not match + the version of the header file. +*/ + +typedef unsigned (*in_func) (void FAR *, + z_const unsigned char FAR * FAR *); +typedef int (*out_func) (void FAR *, unsigned char FAR *, unsigned); + + int inflateBack (z_streamp strm, + in_func in, void FAR *in_desc, + out_func out, void FAR *out_desc); +/* + inflateBack() does a raw inflate with a single call using a call-back + interface for input and output. This is potentially more efficient than + inflate() for file i/o applications, in that it avoids copying between the + output and the sliding window by simply making the window itself the output + buffer. inflate() can be faster on modern CPUs when used with large + buffers. inflateBack() trusts the application to not change the output + buffer passed by the output function, at least until inflateBack() returns. + + inflateBackInit() must be called first to allocate the internal state + and to initialize the state with the user-provided window buffer. + inflateBack() may then be used multiple times to inflate a complete, raw + deflate stream with each call. inflateBackEnd() is then called to free the + allocated state. + + A raw deflate stream is one with no zlib or gzip header or trailer. + This routine would normally be used in a utility that reads zip or gzip + files and writes out uncompressed files. The utility would decode the + header and process the trailer on its own, hence this routine expects only + the raw deflate stream to decompress. This is different from the normal + behavior of inflate(), which expects either a zlib or gzip header and + trailer around the deflate stream. + + inflateBack() uses two subroutines supplied by the caller that are then + called by inflateBack() for input and output. inflateBack() calls those + routines until it reads a complete deflate stream and writes out all of the + uncompressed data, or until it encounters an error. The function's + parameters and return types are defined above in the in_func and out_func + typedefs. inflateBack() will call in(in_desc, &buf) which should return the + number of bytes of provided input, and a pointer to that input in buf. If + there is no input available, in() must return zero--buf is ignored in that + case--and inflateBack() will return a buffer error. inflateBack() will call + out(out_desc, buf, len) to write the uncompressed data buf[0..len-1]. out() + should return zero on success, or non-zero on failure. If out() returns + non-zero, inflateBack() will return with an error. Neither in() nor out() + are permitted to change the contents of the window provided to + inflateBackInit(), which is also the buffer that out() uses to write from. + The length written by out() will be at most the window size. Any non-zero + amount of input may be provided by in(). + + For convenience, inflateBack() can be provided input on the first call by + setting strm->next_in and strm->avail_in. If that input is exhausted, then + in() will be called. Therefore strm->next_in must be initialized before + calling inflateBack(). If strm->next_in is Z_NULL, then in() will be called + immediately for input. If strm->next_in is not Z_NULL, then strm->avail_in + must also be initialized, and then if strm->avail_in is not zero, input will + initially be taken from strm->next_in[0 .. strm->avail_in - 1]. + + The in_desc and out_desc parameters of inflateBack() is passed as the + first parameter of in() and out() respectively when they are called. These + descriptors can be optionally used to pass any information that the caller- + supplied in() and out() functions need to do their job. + + On return, inflateBack() will set strm->next_in and strm->avail_in to + pass back any unused input that was provided by the last in() call. The + return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR + if in() or out() returned an error, Z_DATA_ERROR if there was a format error + in the deflate stream (in which case strm->msg is set to indicate the nature + of the error), or Z_STREAM_ERROR if the stream was not properly initialized. + In the case of Z_BUF_ERROR, an input or output error can be distinguished + using strm->next_in which will be Z_NULL only if in() returned an error. If + strm->next_in is not Z_NULL, then the Z_BUF_ERROR was due to out() returning + non-zero. (in() will always be called before out(), so strm->next_in is + assured to be defined if out() returns non-zero.) Note that inflateBack() + cannot return Z_OK. +*/ + + int inflateBackEnd (z_streamp strm); +/* + All memory allocated by inflateBackInit() is freed. + + inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream + state was inconsistent. +*/ + + uLong zlibCompileFlags (void); +/* Return flags indicating compile-time options. + + Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other: + 1.0: size of uInt + 3.2: size of uLong + 5.4: size of voidpf (pointer) + 7.6: size of z_off_t + + Compiler, assembler, and debug options: + 8: DEBUG + 9: ASMV or ASMINF -- use ASM code + 10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention + 11: 0 (reserved) + + One-time table building (smaller code, but not thread-safe if true): + 12: BUILDFIXED -- build static block decoding tables when needed + 13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed + 14,15: 0 (reserved) + + Library content (indicates missing functionality): + 16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking + deflate code when not needed) + 17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect + and decode gzip streams (to avoid linking crc code) + 18-19: 0 (reserved) + + Operation variations (changes in library functionality): + 20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate + 21: FASTEST -- deflate algorithm with only one, lowest compression level + 22,23: 0 (reserved) + + The sprintf variant used by gzprintf (zero is best): + 24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format + 25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure! + 26: 0 = returns value, 1 = void -- 1 means inferred string length returned + + Remainder: + 27-31: 0 (reserved) + */ + +#ifndef Z_SOLO + + /* utility functions */ + +/* + The following utility functions are implemented on top of the basic + stream-oriented functions. To simplify the interface, some default options + are assumed (compression level and memory usage, standard memory allocation + functions). The source code of these utility functions can be modified if + you need special options. +*/ + + int compress (Bytef *dest, uLongf *destLen, + const Bytef *source, uLong sourceLen); +/* + Compresses the source buffer into the destination buffer. sourceLen is + the byte length of the source buffer. Upon entry, destLen is the total size + of the destination buffer, which must be at least the value returned by + compressBound(sourceLen). Upon exit, destLen is the actual size of the + compressed buffer. + + compress returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_BUF_ERROR if there was not enough room in the output + buffer. +*/ + + int compress2 (Bytef *dest, uLongf *destLen, + const Bytef *source, uLong sourceLen, + int level); +/* + Compresses the source buffer into the destination buffer. The level + parameter has the same meaning as in deflateInit. sourceLen is the byte + length of the source buffer. Upon entry, destLen is the total size of the + destination buffer, which must be at least the value returned by + compressBound(sourceLen). Upon exit, destLen is the actual size of the + compressed buffer. + + compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_BUF_ERROR if there was not enough room in the output buffer, + Z_STREAM_ERROR if the level parameter is invalid. +*/ + + uLong compressBound (uLong sourceLen); +/* + compressBound() returns an upper bound on the compressed size after + compress() or compress2() on sourceLen bytes. It would be used before a + compress() or compress2() call to allocate the destination buffer. +*/ + + int uncompress (unsigned char *dest, uint32_t *destLen, + const unsigned char *source, uint32_t sourceLen); +/* + Decompresses the source buffer into the destination buffer. sourceLen is + the byte length of the source buffer. Upon entry, destLen is the total size + of the destination buffer, which must be large enough to hold the entire + uncompressed data. (The size of the uncompressed data must have been saved + previously by the compressor and transmitted to the decompressor by some + mechanism outside the scope of this compression library.) Upon exit, destLen + is the actual size of the uncompressed buffer. + + uncompress returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_BUF_ERROR if there was not enough room in the output + buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete. In + the case where there is not enough room, uncompress() will fill the output + buffer with the uncompressed data up to that point. +*/ + + /* gzip file access functions */ + +/* + This library supports reading and writing files in gzip (.gz) format with + an interface similar to that of stdio, using the functions that start with + "gz". The gzip format is different from the zlib format. gzip is a gzip + wrapper, documented in RFC 1952, wrapped around a deflate stream. +*/ + +typedef struct gzFile_s *gzFile; /* semi-opaque gzip file descriptor */ + +/* + gzFile gzopen (const char *path, const char *mode); + + Opens a gzip (.gz) file for reading or writing. The mode parameter is as + in fopen ("rb" or "wb") but can also include a compression level ("wb9") or + a strategy: 'f' for filtered data as in "wb6f", 'h' for Huffman-only + compression as in "wb1h", 'R' for run-length encoding as in "wb1R", or 'F' + for fixed code compression as in "wb9F". (See the description of + deflateInit2 for more information about the strategy parameter.) 'T' will + request transparent writing or appending with no compression and not using + the gzip format. + + "a" can be used instead of "w" to request that the gzip stream that will + be written be appended to the file. "+" will result in an error, since + reading and writing to the same gzip file is not supported. The addition of + "x" when writing will create the file exclusively, which fails if the file + already exists. On systems that support it, the addition of "e" when + reading or writing will set the flag to close the file on an execve() call. + + These functions, as well as gzip, will read and decode a sequence of gzip + streams in a file. The append function of gzopen() can be used to create + such a file. (Also see gzflush() for another way to do this.) When + appending, gzopen does not test whether the file begins with a gzip stream, + nor does it look for the end of the gzip streams to begin appending. gzopen + will simply append a gzip stream to the existing file. + + gzopen can be used to read a file which is not in gzip format; in this + case gzread will directly read from the file without decompression. When + reading, this will be detected automatically by looking for the magic two- + byte gzip header. + + gzopen returns NULL if the file could not be opened, if there was + insufficient memory to allocate the gzFile state, or if an invalid mode was + specified (an 'r', 'w', or 'a' was not provided, or '+' was provided). + errno can be checked to determine if the reason gzopen failed was that the + file could not be opened. +*/ + + gzFile gzdopen (int fd, const char *mode); +/* + gzdopen associates a gzFile with the file descriptor fd. File descriptors + are obtained from calls like open, dup, creat, pipe or fileno (if the file + has been previously opened with fopen). The mode parameter is as in gzopen. + + The next call of gzclose on the returned gzFile will also close the file + descriptor fd, just like fclose(fdopen(fd, mode)) closes the file descriptor + fd. If you want to keep fd open, use fd = dup(fd_keep); gz = gzdopen(fd, + mode);. The duplicated descriptor should be saved to avoid a leak, since + gzdopen does not close fd if it fails. If you are using fileno() to get the + file descriptor from a FILE *, then you will have to use dup() to avoid + double-close()ing the file descriptor. Both gzclose() and fclose() will + close the associated file descriptor, so they need to have different file + descriptors. + + gzdopen returns NULL if there was insufficient memory to allocate the + gzFile state, if an invalid mode was specified (an 'r', 'w', or 'a' was not + provided, or '+' was provided), or if fd is -1. The file descriptor is not + used until the next gz* read, write, seek, or close operation, so gzdopen + will not detect if fd is invalid (unless fd is -1). +*/ + + int gzbuffer (gzFile file, unsigned size); +/* + Set the internal buffer size used by this library's functions. The + default buffer size is 8192 bytes. This function must be called after + gzopen() or gzdopen(), and before any other calls that read or write the + file. The buffer memory allocation is always deferred to the first read or + write. Two buffers are allocated, either both of the specified size when + writing, or one of the specified size and the other twice that size when + reading. A larger buffer size of, for example, 64K or 128K bytes will + noticeably increase the speed of decompression (reading). + + The new buffer size also affects the maximum length for gzprintf(). + + gzbuffer() returns 0 on success, or -1 on failure, such as being called + too late. +*/ + + int gzsetparams (gzFile file, int level, int strategy); +/* + Dynamically update the compression level or strategy. See the description + of deflateInit2 for the meaning of these parameters. + + gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not + opened for writing. +*/ + + int gzread (gzFile file, voidp buf, unsigned len); +/* + Reads the given number of uncompressed bytes from the compressed file. If + the input file is not in gzip format, gzread copies the given number of + bytes into the buffer directly from the file. + + After reaching the end of a gzip stream in the input, gzread will continue + to read, looking for another gzip stream. Any number of gzip streams may be + concatenated in the input file, and will all be decompressed by gzread(). + If something other than a gzip stream is encountered after a gzip stream, + that remaining trailing garbage is ignored (and no error is returned). + + gzread can be used to read a gzip file that is being concurrently written. + Upon reaching the end of the input, gzread will return with the available + data. If the error code returned by gzerror is Z_OK or Z_BUF_ERROR, then + gzclearerr can be used to clear the end of file indicator in order to permit + gzread to be tried again. Z_OK indicates that a gzip stream was completed + on the last gzread. Z_BUF_ERROR indicates that the input file ended in the + middle of a gzip stream. Note that gzread does not return -1 in the event + of an incomplete gzip stream. This error is deferred until gzclose(), which + will return Z_BUF_ERROR if the last gzread ended in the middle of a gzip + stream. Alternatively, gzerror can be used before gzclose to detect this + case. + + gzread returns the number of uncompressed bytes actually read, less than + len for end of file, or -1 for error. +*/ + + int gzwrite (gzFile file, + voidpc buf, unsigned len); +/* + Writes the given number of uncompressed bytes into the compressed file. + gzwrite returns the number of uncompressed bytes written or 0 in case of + error. +*/ + + int gzprintf Z_ARG((gzFile file, const char *format, ...)); +/* + Converts, formats, and writes the arguments to the compressed file under + control of the format string, as in fprintf. gzprintf returns the number of + uncompressed bytes actually written, or 0 in case of error. The number of + uncompressed bytes written is limited to 8191, or one less than the buffer + size given to gzbuffer(). The caller should assure that this limit is not + exceeded. If it is exceeded, then gzprintf() will return an error (0) with + nothing written. In this case, there may also be a buffer overflow with + unpredictable consequences, which is possible only if zlib was compiled with + the insecure functions sprintf() or vsprintf() because the secure snprintf() + or vsnprintf() functions were not available. This can be determined using + zlibCompileFlags(). +*/ + + int gzputs (gzFile file, const char *s); +/* + Writes the given null-terminated string to the compressed file, excluding + the terminating null character. + + gzputs returns the number of characters written, or -1 in case of error. +*/ + + char * gzgets (gzFile file, char *buf, int len); +/* + Reads bytes from the compressed file until len-1 characters are read, or a + newline character is read and transferred to buf, or an end-of-file + condition is encountered. If any characters are read or if len == 1, the + string is terminated with a null character. If no characters are read due + to an end-of-file or len < 1, then the buffer is left untouched. + + gzgets returns buf which is a null-terminated string, or it returns NULL + for end-of-file or in case of error. If there was an error, the contents at + buf are indeterminate. +*/ + + int gzputc (gzFile file, int c); +/* + Writes c, converted to an unsigned char, into the compressed file. gzputc + returns the value that was written, or -1 in case of error. +*/ + + int gzgetc (gzFile file); +/* + Reads one byte from the compressed file. gzgetc returns this byte or -1 + in case of end of file or error. This is implemented as a macro for speed. + As such, it does not do all of the checking the other functions do. I.e. + it does not check to see if file is NULL, nor whether the structure file + points to has been clobbered or not. +*/ + + int gzungetc (int c, gzFile file); +/* + Push one character back onto the stream to be read as the first character + on the next read. At least one character of push-back is allowed. + gzungetc() returns the character pushed, or -1 on failure. gzungetc() will + fail if c is -1, and may fail if a character has been pushed but not read + yet. If gzungetc is used immediately after gzopen or gzdopen, at least the + output buffer size of pushed characters is allowed. (See gzbuffer above.) + The pushed character will be discarded if the stream is repositioned with + gzseek() or gzrewind(). +*/ + + int gzflush (gzFile file, int flush); +/* + Flushes all pending output into the compressed file. The parameter flush + is as in the deflate() function. The return value is the zlib error number + (see function gzerror below). gzflush is only permitted when writing. + + If the flush parameter is Z_FINISH, the remaining data is written and the + gzip stream is completed in the output. If gzwrite() is called again, a new + gzip stream will be started in the output. gzread() is able to read such + concatented gzip streams. + + gzflush should be called only when strictly necessary because it will + degrade compression if called too often. +*/ + +/* + z_off_t gzseek (gzFile file, + z_off_t offset, int whence); + + Sets the starting position for the next gzread or gzwrite on the given + compressed file. The offset represents a number of bytes in the + uncompressed data stream. The whence parameter is defined as in lseek(2); + the value SEEK_END is not supported. + + If the file is opened for reading, this function is emulated but can be + extremely slow. If the file is opened for writing, only forward seeks are + supported; gzseek then compresses a sequence of zeroes up to the new + starting position. + + gzseek returns the resulting offset location as measured in bytes from + the beginning of the uncompressed stream, or -1 in case of error, in + particular if the file is opened for writing and the new starting position + would be before the current position. +*/ + + int gzrewind (gzFile file); +/* + Rewinds the given file. This function is supported only for reading. + + gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET) +*/ + +/* + z_off_t gztell (gzFile file); + + Returns the starting position for the next gzread or gzwrite on the given + compressed file. This position represents a number of bytes in the + uncompressed data stream, and is zero when starting, even if appending or + reading a gzip stream from the middle of a file using gzdopen(). + + gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR) +*/ + +/* + z_off_t gzoffset (gzFile file); + + Returns the current offset in the file being read or written. This offset + includes the count of bytes that precede the gzip stream, for example when + appending or when using gzdopen() for reading. When reading, the offset + does not include as yet unused buffered input. This information can be used + for a progress indicator. On error, gzoffset() returns -1. +*/ + + int gzeof (gzFile file); +/* + Returns true (1) if the end-of-file indicator has been set while reading, + false (0) otherwise. Note that the end-of-file indicator is set only if the + read tried to go past the end of the input, but came up short. Therefore, + just like feof(), gzeof() may return false even if there is no more data to + read, in the event that the last read request was for the exact number of + bytes remaining in the input file. This will happen if the input file size + is an exact multiple of the buffer size. + + If gzeof() returns true, then the read functions will return no more data, + unless the end-of-file indicator is reset by gzclearerr() and the input file + has grown since the previous end of file was detected. +*/ + + int gzdirect (gzFile file); +/* + Returns true (1) if file is being copied directly while reading, or false + (0) if file is a gzip stream being decompressed. + + If the input file is empty, gzdirect() will return true, since the input + does not contain a gzip stream. + + If gzdirect() is used immediately after gzopen() or gzdopen() it will + cause buffers to be allocated to allow reading the file to determine if it + is a gzip file. Therefore if gzbuffer() is used, it should be called before + gzdirect(). + + When writing, gzdirect() returns true (1) if transparent writing was + requested ("wT" for the gzopen() mode), or false (0) otherwise. (Note: + gzdirect() is not needed when writing. Transparent writing must be + explicitly requested, so the application already knows the answer. When + linking statically, using gzdirect() will include all of the zlib code for + gzip file reading and decompression, which may not be desired.) +*/ + + int gzclose (gzFile file); +/* + Flushes all pending output if necessary, closes the compressed file and + deallocates the (de)compression state. Note that once file is closed, you + cannot call gzerror with file, since its structures have been deallocated. + gzclose must not be called more than once on the same file, just as free + must not be called more than once on the same allocation. + + gzclose will return Z_STREAM_ERROR if file is not valid, Z_ERRNO on a + file operation error, Z_MEM_ERROR if out of memory, Z_BUF_ERROR if the + last read ended in the middle of a gzip stream, or Z_OK on success. +*/ + + int gzclose_r (gzFile file); + int gzclose_w (gzFile file); +/* + Same as gzclose(), but gzclose_r() is only for use when reading, and + gzclose_w() is only for use when writing or appending. The advantage to + using these instead of gzclose() is that they avoid linking in zlib + compression or decompression code that is not used when only reading or only + writing respectively. If gzclose() is used, then both compression and + decompression code will be included the application when linking to a static + zlib library. +*/ + + const char * gzerror (gzFile file, int *errnum); +/* + Returns the error message for the last error which occurred on the given + compressed file. errnum is set to zlib error number. If an error occurred + in the file system and not in the compression library, errnum is set to + Z_ERRNO and the application may consult errno to get the exact error code. + + The application must not modify the returned string. Future calls to + this function may invalidate the previously returned string. If file is + closed, then the string previously returned by gzerror will no longer be + available. + + gzerror() should be used to distinguish errors from end-of-file for those + functions above that do not distinguish those cases in their return values. +*/ + + void gzclearerr (gzFile file); +/* + Clears the error and end-of-file flags for file. This is analogous to the + clearerr() function in stdio. This is useful for continuing to read a gzip + file that is being written concurrently. +*/ + +#endif /* !Z_SOLO */ + + /* checksum functions */ + +/* + These functions are not related to compression but are exported + anyway because they might be useful in applications using the compression + library. +*/ + +uint32_t adler32 (uint32_t adler, const uint8_t *buf, size_t len); +/* + Update a running Adler-32 checksum with the bytes buf[0..len-1] and + return the updated checksum. If buf is Z_NULL, this function returns the + required initial value for the checksum. + + An Adler-32 checksum is almost as reliable as a CRC32 but can be computed + much faster. + + Usage example: + + uLong adler = adler32(0L, Z_NULL, 0); + + while (read_buffer(buffer, length) != EOF) { + adler = adler32(adler, buffer, length); + } + if (adler != original_adler) error(); +*/ + +/* + uLong adler32_combine (uLong adler1, uLong adler2, + z_off_t len2); + + Combine two Adler-32 checksums into one. For two sequences of bytes, seq1 + and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for + each, adler1 and adler2. adler32_combine() returns the Adler-32 checksum of + seq1 and seq2 concatenated, requiring only adler1, adler2, and len2. Note + that the z_off_t type (like off_t) is a signed integer. If len2 is + negative, the result has no meaning or utility. +*/ + + uLong crc32 (uLong crc, const Bytef *buf, uInt len); +/* + Update a running CRC-32 with the bytes buf[0..len-1] and return the + updated CRC-32. If buf is Z_NULL, this function returns the required + initial value for the crc. Pre- and post-conditioning (one's complement) is + performed within this function so it shouldn't be done by the application. + + Usage example: + + uLong crc = crc32(0L, Z_NULL, 0); + + while (read_buffer(buffer, length) != EOF) { + crc = crc32(crc, buffer, length); + } + if (crc != original_crc) error(); +*/ + +/* + uLong crc32_combine (uLong crc1, uLong crc2, z_off_t len2); + + Combine two CRC-32 check values into one. For two sequences of bytes, + seq1 and seq2 with lengths len1 and len2, CRC-32 check values were + calculated for each, crc1 and crc2. crc32_combine() returns the CRC-32 + check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and + len2. +*/ + + /* various hacks, don't look :) */ + +/* deflateInit and inflateInit are macros to allow checking the zlib version + * and the compiler's view of z_stream: + */ + int deflateInit_ (z_streamp strm, int level, + const char *version, int stream_size); + int inflateInit_ (z_streamp strm, + const char *version, int stream_size); + int deflateInit2_ (z_streamp strm, int level, int method, + int windowBits, int memLevel, + int strategy, const char *version, + int stream_size); + int inflateInit2_ (z_streamp strm, int windowBits, + const char *version, int stream_size); + int inflateBackInit_ (z_streamp strm, int windowBits, + unsigned char FAR *window, + const char *version, + int stream_size); +#define deflateInit(strm, level) \ + deflateInit_((strm), (level), ZLIB_VERSION, (int)sizeof(z_stream)) +#define inflateInit(strm) \ + inflateInit_((strm), ZLIB_VERSION, (int)sizeof(z_stream)) +#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \ + deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\ + (strategy), ZLIB_VERSION, (int)sizeof(z_stream)) +#define inflateInit2(strm, windowBits) \ + inflateInit2_((strm), (windowBits), ZLIB_VERSION, \ + (int)sizeof(z_stream)) +#define inflateBackInit(strm, windowBits, window) \ + inflateBackInit_((strm), (windowBits), (window), \ + ZLIB_VERSION, (int)sizeof(z_stream)) + +#ifndef Z_SOLO + +/* gzgetc() macro and its supporting function and exposed data structure. Note + * that the real internal state is much larger than the exposed structure. + * This abbreviated structure exposes just enough for the gzgetc() macro. The + * user should not mess with these exposed elements, since their names or + * behavior could change in the future, perhaps even capriciously. They can + * only be used by the gzgetc() macro. You have been warned. + */ + int gzgetc_ (gzFile file); /* backward compatibility */ +#ifdef Z_PREFIX_SET +# undef z_gzgetc +# define z_gzgetc(g) \ + ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : gzgetc(g)) +#else +# define gzgetc(g) \ + ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : gzgetc(g)) +#endif + +/* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or + * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if + * both are true, the application gets the *64 functions, and the regular + * functions are changed to 64 bits) -- in case these are set on systems + * without large file support, _LFS64_LARGEFILE must also be true + */ +#ifdef Z_LARGE64 + gzFile gzopen64 (const char *, const char *); + z_off64_t gzseek64 (gzFile, z_off64_t, int); + z_off64_t gztell64 (gzFile); + z_off64_t gzoffset64 (gzFile); + uLong adler32_combine64 (uLong, uLong, z_off64_t); + uLong crc32_combine64 (uLong, uLong, z_off64_t); +#endif + +#if !defined(ZLIB_INTERNAL) && defined(Z_WANT64) +# ifdef Z_PREFIX_SET +# define z_gzopen z_gzopen64 +# define z_gzseek z_gzseek64 +# define z_gztell z_gztell64 +# define z_gzoffset z_gzoffset64 +# define z_adler32_combine z_adler32_combine64 +# define z_crc32_combine z_crc32_combine64 +# else +# define gzopen gzopen64 +# define gzseek gzseek64 +# define gztell gztell64 +# define gzoffset gzoffset64 +# define adler32_combine adler32_combine64 +# define crc32_combine crc32_combine64 +# endif +# ifndef Z_LARGE64 + gzFile gzopen64 (const char *, const char *); + z_off_t gzseek64 (gzFile, z_off_t, int); + z_off_t gztell64 (gzFile); + z_off_t gzoffset64 (gzFile); + uLong adler32_combine64 (uLong, uLong, z_off_t); + uLong crc32_combine64 (uLong, uLong, z_off_t); +# endif +#else + gzFile gzopen (const char *, const char *); + z_off_t gzseek (gzFile, z_off_t, int); + z_off_t gztell (gzFile); + z_off_t gzoffset (gzFile); + uLong adler32_combine (uLong, uLong, z_off_t); + uLong crc32_combine (uLong, uLong, z_off_t); +#endif + +#else /* Z_SOLO */ + + uLong adler32_combine (uLong, uLong, z_off_t); + uLong crc32_combine (uLong, uLong, z_off_t); + +#endif /* !Z_SOLO */ + +/* hack for buggy compilers */ +#if !defined(ZUTIL_H) && !defined(NO_DUMMY_DECL) + struct internal_state {int dummy;}; +#endif + +/* undocumented functions */ + const char * zError (int); + int inflateSyncPoint (z_streamp); + +const uint32_t * get_crc_table(void); + int inflateUndermine (z_streamp, int); + int inflateResetKeep (z_streamp); + int deflateResetKeep (z_streamp); +#if defined(_WIN32) && !defined(Z_SOLO) + gzFile gzopen_w (const wchar_t *path, + const char *mode); +#endif +#if defined(STDC) || defined(Z_HAVE_STDARG_H) +# ifndef Z_SOLO + int gzvprintf Z_ARG((gzFile file, + const char *format, + va_list va)); +# endif +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* ZLIB_H */ + +#else +#include +#endif + +#endif diff --git a/include/compat/zlib/zutil.h b/include/compat/zlib/zutil.h new file mode 100644 index 0000000..bc67f5a --- /dev/null +++ b/include/compat/zlib/zutil.h @@ -0,0 +1,253 @@ +#ifndef _COMPAT_ZUTIL_H +#define _COMPAT_ZUTIL_H + +#ifdef WANT_ZLIB + +/* zutil.h -- internal interface and configuration of the compression library + * Copyright (C) 1995-2013 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* WARNING: this file should *not* be used by applications. It is + part of the implementation of the compression library and is + subject to change. Applications should only use zlib.h. + */ + +/* @(#) $Id$ */ + +#ifndef ZUTIL_H +#define ZUTIL_H + +#ifdef HAVE_HIDDEN +# define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) +#else +# define ZLIB_INTERNAL +#endif + +#include + +#if defined(STDC) && !defined(Z_SOLO) +# if !(defined(_WIN32_WCE) && defined(_MSC_VER)) +# include +# endif +# include +# include +#endif + +#ifdef Z_SOLO + typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ +#endif + +#ifndef local +# define local static +#endif +/* compile with -Dlocal if your debugger can't find static symbols */ + +typedef unsigned char uch; +typedef uch FAR uchf; +typedef unsigned short ush; +typedef ush FAR ushf; +typedef unsigned long ulg; + +extern char z_errmsg[10][21]; /* indexed by 2-zlib_error */ +/* (array size given to avoid silly warnings with Visual C++) */ +/* (array entry size given to avoid silly string cast warnings) */ + +#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] + +#define ERR_RETURN(strm,err) \ + return (strm->msg = ERR_MSG(err), (err)) +/* To be used only when the state is known to be valid */ + + /* common constants */ + +#ifndef DEF_WBITS +# define DEF_WBITS MAX_WBITS +#endif +/* default windowBits for decompression. MAX_WBITS is for compression only */ + +#if MAX_MEM_LEVEL >= 8 +# define DEF_MEM_LEVEL 8 +#else +# define DEF_MEM_LEVEL MAX_MEM_LEVEL +#endif +/* default memLevel */ + +#define STORED_BLOCK 0 +#define STATIC_TREES 1 +#define DYN_TREES 2 +/* The three kinds of block type */ + +#define MIN_MATCH 3 +#define MAX_MATCH 258 +/* The minimum and maximum match lengths */ + +#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ + + /* target dependencies */ + +#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) +# define OS_CODE 0x00 +# ifndef Z_SOLO +# if defined(__TURBOC__) || defined(__BORLANDC__) +# if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) + /* Allow compilation with ANSI keywords only enabled */ + void _Cdecl farfree( void *block ); + void *_Cdecl farmalloc( unsigned long nbytes ); +# else +# include +# endif +# else /* MSC or DJGPP */ +# include +# endif +# endif +#endif + +#ifdef AMIGA +# define OS_CODE 0x01 +#endif + +#if defined(VAXC) || defined(VMS) +# define OS_CODE 0x02 +# define F_OPEN(name, mode) \ + fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") +#endif + +#if defined(ATARI) || defined(atarist) +# define OS_CODE 0x05 +#endif + +#ifdef OS2 +# define OS_CODE 0x06 +# if defined(M_I86) && !defined(Z_SOLO) +# include +# endif +#endif + +#if defined(MACOS) || defined(TARGET_OS_MAC) +# define OS_CODE 0x07 +# ifndef Z_SOLO +# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os +# include /* for fdopen */ +# else +# ifndef fdopen +# define fdopen(fd,mode) NULL /* No fdopen() */ +# endif +# endif +# endif +#endif + +#ifdef TOPS20 +# define OS_CODE 0x0a +#endif + +#ifdef WIN32 +# ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ +# define OS_CODE 0x0b +# endif +#endif + +#ifdef __50SERIES /* Prime/PRIMOS */ +# define OS_CODE 0x0f +#endif + +#if defined(_BEOS_) || defined(RISCOS) +# define fdopen(fd,mode) NULL /* No fdopen() */ +#endif + +#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX +# if defined(_WIN32_WCE) +# define fdopen(fd,mode) NULL /* No fdopen() */ +# ifndef _PTRDIFF_T_DEFINED + typedef int ptrdiff_t; +# define _PTRDIFF_T_DEFINED +# endif +# else +# define fdopen(fd,type) _fdopen(fd,type) +# endif +#endif + +#if defined(__BORLANDC__) && !defined(MSDOS) + #pragma warn -8004 + #pragma warn -8008 + #pragma warn -8066 +#endif + +/* provide prototypes for these when building zlib without LFS */ +#if !defined(_WIN32) && \ + (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) + uLong adler32_combine64 (uLong, uLong, z_off_t); + uLong crc32_combine64 (uLong, uLong, z_off_t); +#endif + + /* common defaults */ + +#ifndef OS_CODE +# define OS_CODE 0x03 /* assume Unix */ +#endif + +#ifndef F_OPEN +# define F_OPEN(name, mode) fopen((name), (mode)) +#endif + + /* functions */ + +#if defined(pyr) || defined(Z_SOLO) +# define NO_MEMCPY +#endif +#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) + /* Use our own functions for small and medium model with MSC <= 5.0. + * You may have to use the same strategy for Borland C (untested). + * The __SC__ check is for Symantec. + */ +# define NO_MEMCPY +#endif +#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) +# define HAVE_MEMCPY +#endif +#ifdef HAVE_MEMCPY +# ifdef SMALL_MEDIUM /* MSDOS small or medium model */ +# define zmemcpy _fmemcpy +# define zmemcmp _fmemcmp +# define zmemzero(dest, len) _fmemset(dest, 0, len) +# else +# define zmemcpy memcpy +# define zmemcmp memcmp +# define zmemzero(dest, len) memset(dest, 0, len) +# endif +#else + void ZLIB_INTERNAL zmemcpy (Bytef* dest, const Bytef* source, uInt len); + int ZLIB_INTERNAL zmemcmp (const Bytef* s1, const Bytef* s2, uInt len); + void ZLIB_INTERNAL zmemzero (Bytef* dest, uInt len); +#endif + +/* Diagnostic functions */ +# define Assert(cond,msg) +# define Trace(x) +# define Tracev(x) +# define Tracevv(x) +# define Tracec(c,x) +# define Tracecv(c,x) + +#ifndef Z_SOLO + voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, + unsigned size); + void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr); +#endif + +#define ZALLOC(strm, items, size) \ + (*((strm)->zalloc))((strm)->opaque, (items), (size)) +#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) +#define TRY_FREE(s, p) {if (p) ZFREE(s, p);} + +/* Reverse the bytes in a 32-bit value */ +#define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ + (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) + +#endif /* ZUTIL_H */ + +#else +#include +#endif + +#endif diff --git a/include/encodings/base64.h b/include/encodings/base64.h new file mode 100644 index 0000000..11658d7 --- /dev/null +++ b/include/encodings/base64.h @@ -0,0 +1,48 @@ +#ifndef _LIBRETRO_ENCODINGS_BASE64_H +#define _LIBRETRO_ENCODINGS_BASE64_H + +#include +#include + +#include + +RETRO_BEGIN_DECLS + +const static char* b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; + +/* maps A=>0,B=>1.. */ +const static unsigned char unb64[]={ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 62, 0, 0, 0, 63, 52, 53, + 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, + 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, + 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, + 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, + 25, 0, 0, 0, 0, 0, 0, 26, 27, 28, + 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, + 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, + 49, 50, 51, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, +}; /* This array has 256 elements */ + +char* base64(const void* binaryData, int len, int *flen); +unsigned char* unbase64(const char* ascii, int len, int *flen); + +RETRO_END_DECLS + +#endif diff --git a/include/streams/file_stream.h b/include/streams/file_stream.h index 8e83f6d..c25dfe7 100644 --- a/include/streams/file_stream.h +++ b/include/streams/file_stream.h @@ -36,6 +36,7 @@ #include #include +#include #define FILESTREAM_REQUIRED_VFS_VERSION 2 @@ -106,6 +107,8 @@ bool filestream_exists(const char *path); char *filestream_getline(RFILE *stream); +const libretro_vfs_implementation_file* filestream_get_vfs_handle(RFILE *stream); + RETRO_END_DECLS #endif diff --git a/include/vfs/vfs_implementation.h b/include/vfs/vfs_implementation.h index 9f49f26..6ba84e3 100644 --- a/include/vfs/vfs_implementation.h +++ b/include/vfs/vfs_implementation.h @@ -23,8 +23,50 @@ #ifndef __LIBRETRO_SDK_VFS_IMPLEMENTATION_H #define __LIBRETRO_SDK_VFS_IMPLEMENTATION_H +#include #include #include +#include + +#ifdef HAVE_CDROM +#include +#endif + +#ifdef _WIN32 +typedef void* HANDLE; +#endif + +enum vfs_scheme +{ + VFS_SCHEME_NONE = 0, + VFS_SCHEME_CDROM +}; + +#ifndef __WINRT__ +#ifdef VFS_FRONTEND +struct retro_vfs_file_handle +#else +struct libretro_vfs_implementation_file +#endif +{ + int fd; + unsigned hints; + int64_t size; + char *buf; + FILE *fp; +#ifdef _WIN32 + HANDLE fh; +#endif + char* orig_path; + uint64_t mappos; + uint64_t mapsize; + uint8_t *mapped; + enum vfs_scheme scheme; +#ifdef HAVE_CDROM + vfs_cdrom_t cdrom; +#endif +}; +#endif /* Replace the following symbol with something appropriate * to signify the file is being compiled for a front end instead of a core. diff --git a/include/vfs/vfs_implementation_cdrom.h b/include/vfs/vfs_implementation_cdrom.h new file mode 100644 index 0000000..9a91f26 --- /dev/null +++ b/include/vfs/vfs_implementation_cdrom.h @@ -0,0 +1,72 @@ +/* Copyright (C) 2010-2019 The RetroArch team + * + * --------------------------------------------------------------------------------------- + * The following license statement only applies to this file (vfs_implementation_cdrom.h). + * --------------------------------------------------------------------------------------- + * + * Permission is hereby granted, free of charge, + * to any person obtaining a copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation the rights to + * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, + * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef __LIBRETRO_SDK_VFS_IMPLEMENTATION_CDROM_H +#define __LIBRETRO_SDK_VFS_IMPLEMENTATION_CDROM_H + +#include + +RETRO_BEGIN_DECLS + +typedef struct RFILE RFILE; + +typedef struct +{ + char *cue_buf; + size_t cue_len; + int64_t byte_pos; + char drive; + unsigned char cur_min; + unsigned char cur_sec; + unsigned char cur_frame; + unsigned char cur_track; + unsigned cur_lba; +} vfs_cdrom_t; + +#ifdef VFS_FRONTEND +struct retro_vfs_file_handle; +#else +struct libretro_vfs_implementation_file; +#endif + +int64_t retro_vfs_file_seek_cdrom(libretro_vfs_implementation_file *stream, int64_t offset, int whence); + +void retro_vfs_file_open_cdrom( + libretro_vfs_implementation_file *stream, + const char *path, unsigned mode, unsigned hints); + +int retro_vfs_file_close_cdrom(libretro_vfs_implementation_file *stream); + +int64_t retro_vfs_file_tell_cdrom(libretro_vfs_implementation_file *stream); + +int64_t retro_vfs_file_read_cdrom(libretro_vfs_implementation_file *stream, + void *s, uint64_t len); + +int retro_vfs_file_error_cdrom(libretro_vfs_implementation_file *stream); + +const cdrom_toc_t* retro_vfs_file_get_cdrom_toc(void); + +const vfs_cdrom_t* retro_vfs_file_get_cdrom_position(const libretro_vfs_implementation_file *stream); + +RETRO_END_DECLS + +#endif diff --git a/lists/string_list.c b/lists/string_list.c index 36e6a2d..a932280 100644 --- a/lists/string_list.c +++ b/lists/string_list.c @@ -53,7 +53,7 @@ void string_list_free(struct string_list *list) free(list->elems); } - list->elems = NULL; + list->elems = NULL; free(list); } diff --git a/net/net_http.c b/net/net_http.c index 2076e01..8eab42e 100644 --- a/net/net_http.c +++ b/net/net_http.c @@ -288,6 +288,9 @@ struct http_connection_t *net_http_connection_new(const char *url, else error = true; + if (string_is_empty(conn->scan)) + goto error; + /* Get the port here from the url if it's specified. does not work on username password urls: user:pass@domain.com @@ -312,16 +315,18 @@ struct http_connection_t *net_http_connection_new(const char *url, strlcpy(new_domain, domain_port, sizeof(new_domain)); + free(url_dup); + if (uri != NULL) { - if (strchr(uri, (char) '/') == NULL) + if (strchr(uri, (char) '/') == NULL) strlcat(new_domain, uri, sizeof(new_domain)); else - { + { strlcat(new_domain, "/", sizeof(new_domain)); strlcat(new_domain, strchr(uri, (char) '/')+sizeof(char), sizeof(new_domain)); } - strlcpy(conn->scan, new_domain, sizeof(new_domain)); + strlcpy(conn->scan, new_domain, strlen(conn->scan) + 1); } } /* end of port-fetching from url */ diff --git a/streams/chd_stream.c b/streams/chd_stream.c index f622a78..97d3eb4 100644 --- a/streams/chd_stream.c +++ b/streams/chd_stream.c @@ -332,15 +332,15 @@ ssize_t chdstream_read(chdstream_t *stream, void *data, size_t bytes) frame_offset = stream->offset % stream->frame_size; amount = stream->frame_size - frame_offset; if (amount > end - stream->offset) - amount = end - stream->offset; + amount = (uint32_t)(end - stream->offset); /* In pregap */ if (stream->offset < stream->track_start) memset(out + data_offset, 0, amount); else { - chd_frame = stream->track_frame + - (stream->offset - stream->track_start) / stream->frame_size; + chd_frame = (uint32_t)(stream->track_frame + + (stream->offset - stream->track_start) / stream->frame_size); hunk = chd_frame / stream->frames_per_hunk; hunk_offset = (chd_frame % stream->frames_per_hunk) * hd->unitbytes; diff --git a/streams/file_stream.c b/streams/file_stream.c index 3d03fe3..aa22e0c 100644 --- a/streams/file_stream.c +++ b/streams/file_stream.c @@ -609,3 +609,8 @@ char *filestream_getline(RFILE *stream) newline[idx] = '\0'; return newline; } + +const libretro_vfs_implementation_file* filestream_get_vfs_handle(RFILE *stream) +{ + return (const libretro_vfs_implementation_file*)stream->hfile; +} diff --git a/vfs/vfs_implementation.c b/vfs/vfs_implementation.c index 245b3c7..2d72e0b 100644 --- a/vfs/vfs_implementation.c +++ b/vfs/vfs_implementation.c @@ -41,11 +41,12 @@ # include # define INVALID_FILE_ATTRIBUTES -1 # else -# include + # include # include # include # endif +# include #else # if defined(PSP) # include @@ -190,26 +191,11 @@ #include #include -#define RFILE_HINT_UNBUFFERED (1 << 8) +#ifdef HAVE_CDROM +#include +#endif -#ifdef VFS_FRONTEND -struct retro_vfs_file_handle -#else -struct libretro_vfs_implementation_file -#endif -{ - int fd; - unsigned hints; - int64_t size; - char *buf; - FILE *fp; - char* orig_path; -#if defined(HAVE_MMAP) - uint64_t mappos; - uint64_t mapsize; - uint8_t *mapped; -#endif -}; +#define RFILE_HINT_UNBUFFERED (1 << 8) int64_t retro_vfs_file_seek_internal(libretro_vfs_implementation_file *stream, int64_t offset, int whence) { @@ -235,7 +221,12 @@ int64_t retro_vfs_file_seek_internal(libretro_vfs_implementation_file *stream, i return -1; return 0; #else - return fseeko(stream->fp, (off_t)offset, whence); +#ifdef HAVE_CDROM + if (stream->scheme == VFS_SCHEME_CDROM) + return retro_vfs_file_seek_cdrom(stream, offset, whence); + else +#endif + return fseeko(stream->fp, (off_t)offset, whence); #endif } #ifdef HAVE_MMAP @@ -296,6 +287,7 @@ libretro_vfs_implementation_file *retro_vfs_file_open_impl( { int flags = 0; const char *mode_str = NULL; + int path_len = (int)strlen(path); libretro_vfs_implementation_file *stream = (libretro_vfs_implementation_file*) calloc(1, sizeof(*stream)); @@ -303,7 +295,6 @@ libretro_vfs_implementation_file *retro_vfs_file_open_impl( const char *dumb_prefix = "vfsonly://"; size_t dumb_prefix_siz = strlen(dumb_prefix); int dumb_prefix_len = (int)dumb_prefix_siz; - int path_len = (int)strlen(path); if (path_len >= dumb_prefix_len) { @@ -312,6 +303,23 @@ libretro_vfs_implementation_file *retro_vfs_file_open_impl( } #endif +#ifdef HAVE_CDROM + { + const char *cdrom_prefix = "cdrom://"; + size_t cdrom_prefix_siz = strlen(cdrom_prefix); + int cdrom_prefix_len = (int)cdrom_prefix_siz; + + if (path_len > cdrom_prefix_len) + { + if (!memcmp(path, cdrom_prefix, cdrom_prefix_len)) + { + path += cdrom_prefix_siz; + stream->scheme = VFS_SCHEME_CDROM; + } + } + } +#endif + if (!stream) return NULL; @@ -398,11 +406,29 @@ libretro_vfs_implementation_file *retro_vfs_file_open_impl( } stream->fd = fd; #else - FILE *fp = (FILE*)fopen_utf8(path, mode_str); + FILE *fp; +#ifdef HAVE_CDROM + if (stream->scheme == VFS_SCHEME_CDROM) + { + retro_vfs_file_open_cdrom(stream, path, mode, hints); +#if defined(_WIN32) && !defined(_XBOX) + if (!stream->fh) + goto error; +#else + if (!stream->fp) + goto error; +#endif + } + else +#endif + { + fp = (FILE*)fopen_utf8(path, mode_str); - if (!fp) - goto error; + if (!fp) + goto error; + stream->fp = fp; + } /* Regarding setvbuf: * * https://www.freebsd.org/cgi/man.cgi?query=setvbuf&apropos=0&sektion=0&manpath=FreeBSD+11.1-RELEASE&arch=default&format=html @@ -413,10 +439,13 @@ libretro_vfs_implementation_file *retro_vfs_file_open_impl( * Since C89 does not support specifying a null buffer with a non-zero size, we create and track our own buffer for it. */ /* TODO: this is only useful for a few platforms, find which and add ifdef */ - stream->fp = fp; #if !defined(PS2) && !defined(PSP) - stream->buf = (char*)calloc(1, 0x4000); - setvbuf(stream->fp, stream->buf, _IOFBF, 0x4000); + if (stream->scheme != VFS_SCHEME_CDROM) + { + stream->buf = (char*)calloc(1, 0x4000); + if (stream->fp) + setvbuf(stream->fp, stream->buf, _IOFBF, 0x4000); + } #endif #endif } @@ -465,12 +494,26 @@ libretro_vfs_implementation_file *retro_vfs_file_open_impl( stream->size = orbisLseek(stream->fd, 0, SEEK_END); orbisLseek(stream->fd, 0, SEEK_SET); #else - retro_vfs_file_seek_internal(stream, 0, SEEK_SET); - retro_vfs_file_seek_internal(stream, 0, SEEK_END); +#ifdef HAVE_CDROM + if (stream->scheme == VFS_SCHEME_CDROM) + { + retro_vfs_file_seek_cdrom(stream, 0, SEEK_SET); + retro_vfs_file_seek_cdrom(stream, 0, SEEK_END); - stream->size = retro_vfs_file_tell_impl(stream); + stream->size = retro_vfs_file_tell_impl(stream); - retro_vfs_file_seek_internal(stream, 0, SEEK_SET); + retro_vfs_file_seek_cdrom(stream, 0, SEEK_SET); + } + else +#endif + { + retro_vfs_file_seek_internal(stream, 0, SEEK_SET); + retro_vfs_file_seek_internal(stream, 0, SEEK_END); + + stream->size = retro_vfs_file_tell_impl(stream); + + retro_vfs_file_seek_internal(stream, 0, SEEK_SET); + } #endif return stream; @@ -484,10 +527,20 @@ int retro_vfs_file_close_impl(libretro_vfs_implementation_file *stream) if (!stream) return -1; +#ifdef HAVE_CDROM + if (stream->scheme == VFS_SCHEME_CDROM) + { + retro_vfs_file_close_cdrom(stream); + goto end; + } +#endif + if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0) { if (stream->fp) + { fclose(stream->fp); + } } else { @@ -506,10 +559,17 @@ int retro_vfs_file_close_impl(libretro_vfs_implementation_file *stream) close(stream->fd); #endif } +#ifdef HAVE_CDROM +end: + if (stream->cdrom.cue_buf) + free(stream->cdrom.cue_buf); +#endif if (stream->buf) free(stream->buf); + if (stream->orig_path) free(stream->orig_path); + free(stream); return 0; @@ -520,9 +580,12 @@ int retro_vfs_file_error_impl(libretro_vfs_implementation_file *stream) #ifdef ORBIS /* TODO/FIXME - implement this? */ return 0; -#else - return ferror(stream->fp); #endif +#ifdef HAVE_CDROM + if (stream->scheme == VFS_SCHEME_CDROM) + return retro_vfs_file_error_cdrom(stream); +#endif + return ferror(stream->fp); } int64_t retro_vfs_file_size_impl(libretro_vfs_implementation_file *stream) @@ -555,6 +618,10 @@ int64_t retro_vfs_file_tell_impl(libretro_vfs_implementation_file *stream) if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0) { +#ifdef HAVE_CDROM + if (stream->scheme == VFS_SCHEME_CDROM) + return retro_vfs_file_tell_cdrom(stream); +#endif #ifdef ORBIS int64_t ret = orbisLseek(stream->fd, 0, SEEK_CUR); if (ret < 0) @@ -565,7 +632,7 @@ int64_t retro_vfs_file_tell_impl(libretro_vfs_implementation_file *stream) #ifdef ATLEAST_VC2005 return _ftelli64(stream->fp); #else - return ftell(stream->fp); + return ftell(stream->fp); #endif #endif } @@ -614,7 +681,12 @@ int64_t retro_vfs_file_read_impl(libretro_vfs_implementation_file *stream, return -1; return 0; #else - return fread(s, 1, (size_t)len, stream->fp); +#ifdef HAVE_CDROM + if (stream->scheme == VFS_SCHEME_CDROM) + return retro_vfs_file_read_cdrom(stream, s, len); + else +#endif + return fread(s, 1, (size_t)len, stream->fp); #endif } #ifdef HAVE_MMAP diff --git a/vfs/vfs_implementation_cdrom.c b/vfs/vfs_implementation_cdrom.c new file mode 100644 index 0000000..0e9f578 --- /dev/null +++ b/vfs/vfs_implementation_cdrom.c @@ -0,0 +1,408 @@ +/* Copyright (C) 2010-2019 The RetroArch team +* +* --------------------------------------------------------------------------------------- +* The following license statement only applies to this file (vfs_implementation_cdrom.c). +* --------------------------------------------------------------------------------------- +* +* Permission is hereby granted, free of charge, +* to any person obtaining a copy of this software and associated documentation files (the "Software"), +* to deal in the Software without restriction, including without limitation the rights to +* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, +* and to permit persons to whom the Software is furnished to do so, subject to the following conditions: +* +* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, +* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, +* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include +#include +#include +#include +#include + +#if defined(_WIN32) && !defined(_XBOX) +#include +#endif + +static cdrom_toc_t vfs_cdrom_toc = {0}; + +const cdrom_toc_t* retro_vfs_file_get_cdrom_toc(void) +{ + return &vfs_cdrom_toc; +} + +int64_t retro_vfs_file_seek_cdrom(libretro_vfs_implementation_file *stream, int64_t offset, int whence) +{ + const char *ext = path_get_extension(stream->orig_path); + + if (string_is_equal_noncase(ext, "cue")) + { + switch (whence) + { + case SEEK_SET: + stream->cdrom.byte_pos = offset; + break; + case SEEK_CUR: + stream->cdrom.byte_pos += offset; + break; + case SEEK_END: + stream->cdrom.byte_pos = (stream->cdrom.cue_len - 1) + offset; + break; + } + +#ifdef CDROM_DEBUG + printf("CDROM Seek: Path %s Offset %" PRIu64 " is now at %" PRIu64 "\n", stream->orig_path, offset, stream->cdrom.byte_pos); + fflush(stdout); +#endif + } + else if (string_is_equal_noncase(ext, "bin")) + { + int lba = (offset / 2352); + unsigned char min = 0; + unsigned char sec = 0; + unsigned char frame = 0; + const char *seek_type = "SEEK_SET"; + + (void)seek_type; + + switch (whence) + { + case SEEK_CUR: + { + unsigned new_lba; + + stream->cdrom.byte_pos += offset; + new_lba = vfs_cdrom_toc.track[stream->cdrom.cur_track - 1].lba + (stream->cdrom.byte_pos / 2352); + seek_type = "SEEK_CUR"; + + lba_to_msf(new_lba, &min, &sec, &frame); + + break; + } + case SEEK_END: + { + ssize_t pregap_lba_len = (vfs_cdrom_toc.track[stream->cdrom.cur_track - 1].audio ? 0 : (vfs_cdrom_toc.track[stream->cdrom.cur_track - 1].lba - vfs_cdrom_toc.track[stream->cdrom.cur_track - 1].lba_start)); + ssize_t lba_len = vfs_cdrom_toc.track[stream->cdrom.cur_track - 1].track_size - pregap_lba_len; + + lba_to_msf(lba_len + lba, &min, &sec, &frame); + + stream->cdrom.byte_pos = lba_len * 2352; + seek_type = "SEEK_END"; + + break; + } + case SEEK_SET: + default: + { + seek_type = "SEEK_SET"; + stream->cdrom.byte_pos = offset; + lba_to_msf(vfs_cdrom_toc.track[stream->cdrom.cur_track - 1].lba + (stream->cdrom.byte_pos / 2352), &min, &sec, &frame); + break; + } + } + + stream->cdrom.cur_min = min; + stream->cdrom.cur_sec = sec; + stream->cdrom.cur_frame = frame; + stream->cdrom.cur_lba = msf_to_lba(min, sec, frame); + +#ifdef CDROM_DEBUG + printf("CDROM Seek %s: Path %s Offset %" PRIu64 " is now at %" PRIu64 " (MSF %02u:%02u:%02u) (LBA %u)...\n", seek_type, stream->orig_path, offset, stream->cdrom.byte_pos, (unsigned)stream->cdrom.cur_min, (unsigned)stream->cdrom.cur_sec, (unsigned)stream->cdrom.cur_frame, stream->cdrom.cur_lba); + fflush(stdout); +#endif + } + else + return -1; + + return 0; +} + +void retro_vfs_file_open_cdrom( + libretro_vfs_implementation_file *stream, + const char *path, unsigned mode, unsigned hints) +{ +#if defined(__linux__) && !defined(ANDROID) + char cdrom_path[] = "/dev/sg1"; + size_t path_len = strlen(path); + const char *ext = path_get_extension(path); + + stream->cdrom.cur_track = 1; + + if (!string_is_equal_noncase(ext, "cue") && !string_is_equal_noncase(ext, "bin")) + return; + + if (path_len >= strlen("drive1-track01.bin")) + { + if (!memcmp(path, "drive", strlen("drive"))) + { + if (!memcmp(path + 6, "-track", strlen("-track"))) + { + if (sscanf(path + 12, "%02u", (unsigned*)&stream->cdrom.cur_track)) + { +#ifdef CDROM_DEBUG + printf("CDROM: Opening track %d\n", stream->cdrom.cur_track); + fflush(stdout); +#endif + } + } + } + } + + if (path_len >= strlen("drive1.cue")) + { + if (!memcmp(path, "drive", strlen("drive"))) + { + if (path[5] >= '0' && path[5] <= '9') + { + cdrom_path[7] = path[5]; + stream->cdrom.drive = path[5]; + vfs_cdrom_toc.drive = stream->cdrom.drive; + } + } + } + +#ifdef CDROM_DEBUG + printf("CDROM Open: Path %s URI %s\n", cdrom_path, path); + fflush(stdout); +#endif + stream->fp = (FILE*)fopen_utf8(cdrom_path, "r+b"); + + if (!stream->fp) + return; + + if (string_is_equal_noncase(ext, "cue")) + { + if (stream->cdrom.cue_buf) + { + free(stream->cdrom.cue_buf); + stream->cdrom.cue_buf = NULL; + } + + cdrom_write_cue(stream, &stream->cdrom.cue_buf, &stream->cdrom.cue_len, stream->cdrom.drive, &vfs_cdrom_toc.num_tracks, &vfs_cdrom_toc); + +#ifdef CDROM_DEBUG + if (string_is_empty(stream->cdrom.cue_buf)) + { + printf("Error writing cue sheet.\n"); + fflush(stdout); + } + else + { + printf("CDROM CUE Sheet:\n%s\n", stream->cdrom.cue_buf); + fflush(stdout); + } +#endif + } +#endif +#if defined(_WIN32) && !defined(_XBOX) + char cdrom_path[] = "\\\\.\\D:"; + size_t path_len = strlen(path); + const char *ext = path_get_extension(path); + + if (!string_is_equal_noncase(ext, "cue") && !string_is_equal_noncase(ext, "bin")) + return; + + if (path_len >= strlen("d:/drive-track01.bin")) + { + if (!memcmp(path + 1, ":/drive-track", strlen(":/drive-track"))) + { + if (sscanf(path + 14, "%02u", (unsigned*)&stream->cdrom.cur_track)) + { +#ifdef CDROM_DEBUG + printf("CDROM: Opening track %d\n", stream->cdrom.cur_track); + fflush(stdout); +#endif + } + } + } + + if (path_len >= strlen("d:/drive.cue")) + { + if (!memcmp(path + 1, ":/drive", strlen(":/drive"))) + { + if ((path[0] >= 'A' && path[0] <= 'Z') || (path[0] >= 'a' && path[0] <= 'z')) + { + cdrom_path[4] = path[0]; + stream->cdrom.drive = path[0]; + vfs_cdrom_toc.drive = stream->cdrom.drive; + } + } + } + +#ifdef CDROM_DEBUG + printf("CDROM Open: Path %s URI %s\n", cdrom_path, path); + fflush(stdout); +#endif + stream->fh = CreateFile(cdrom_path, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); + + if (stream->fh == INVALID_HANDLE_VALUE) + return; + + if (string_is_equal_noncase(ext, "cue")) + { + if (stream->cdrom.cue_buf) + { + free(stream->cdrom.cue_buf); + stream->cdrom.cue_buf = NULL; + } + + cdrom_write_cue(stream, &stream->cdrom.cue_buf, &stream->cdrom.cue_len, stream->cdrom.drive, &vfs_cdrom_toc.num_tracks, &vfs_cdrom_toc); + +#ifdef CDROM_DEBUG + if (string_is_empty(stream->cdrom.cue_buf)) + { + printf("Error writing cue sheet.\n"); + fflush(stdout); + } + else + { + printf("CDROM CUE Sheet:\n%s\n", stream->cdrom.cue_buf); + fflush(stdout); + } +#endif + } +#endif + if (vfs_cdrom_toc.num_tracks > 1 && stream->cdrom.cur_track) + { + stream->cdrom.cur_min = vfs_cdrom_toc.track[stream->cdrom.cur_track - 1].min; + stream->cdrom.cur_sec = vfs_cdrom_toc.track[stream->cdrom.cur_track - 1].sec; + stream->cdrom.cur_frame = vfs_cdrom_toc.track[stream->cdrom.cur_track - 1].frame; + stream->cdrom.cur_lba = msf_to_lba(stream->cdrom.cur_min, stream->cdrom.cur_sec, stream->cdrom.cur_frame); + } + else + { + stream->cdrom.cur_min = vfs_cdrom_toc.track[0].min; + stream->cdrom.cur_sec = vfs_cdrom_toc.track[0].sec; + stream->cdrom.cur_frame = vfs_cdrom_toc.track[0].frame; + stream->cdrom.cur_lba = msf_to_lba(stream->cdrom.cur_min, stream->cdrom.cur_sec, stream->cdrom.cur_frame); + } +} + +int retro_vfs_file_close_cdrom(libretro_vfs_implementation_file *stream) +{ +#ifdef CDROM_DEBUG + printf("CDROM Close: Path %s\n", stream->orig_path); + fflush(stdout); +#endif + +#if defined(_WIN32) && !defined(_XBOX) + if (!stream->fh || !CloseHandle(stream->fh)) + return -1; +#else + if (!stream->fp || fclose(stream->fp)) + return -1; +#endif + + return 0; +} + +int64_t retro_vfs_file_tell_cdrom(libretro_vfs_implementation_file *stream) +{ + if (!stream) + return -1; + + const char *ext = path_get_extension(stream->orig_path); + + if (string_is_equal_noncase(ext, "cue")) + { +#ifdef CDROM_DEBUG + printf("CDROM (cue) Tell: Path %s Position %" PRIu64 "\n", stream->orig_path, stream->cdrom.byte_pos); + fflush(stdout); +#endif + return stream->cdrom.byte_pos; + } + else if (string_is_equal_noncase(ext, "bin")) + { +#ifdef CDROM_DEBUG + printf("CDROM (bin) Tell: Path %s Position %" PRId64 "\n", stream->orig_path, stream->cdrom.byte_pos); + fflush(stdout); +#endif + return stream->cdrom.byte_pos; + } + + return -1; +} + +int64_t retro_vfs_file_read_cdrom(libretro_vfs_implementation_file *stream, + void *s, uint64_t len) +{ + int rv; + const char *ext = path_get_extension(stream->orig_path); + + if (string_is_equal_noncase(ext, "cue")) + { + if (len < stream->cdrom.cue_len - stream->cdrom.byte_pos) + { +#ifdef CDROM_DEBUG + printf("CDROM Read: Reading %" PRIu64 " bytes from cuesheet starting at %" PRIu64 "...\n", len, stream->cdrom.byte_pos); + fflush(stdout); +#endif + memcpy(s, stream->cdrom.cue_buf + stream->cdrom.byte_pos, len); + stream->cdrom.byte_pos += len; + + return len; + } + else + { +#ifdef CDROM_DEBUG + printf("CDROM Read: Reading %" PRIu64 " bytes from cuesheet starting at %" PRIu64 " failed.\n", len, stream->cdrom.byte_pos); + fflush(stdout); +#endif + return 0; + } + } + else if (string_is_equal_noncase(ext, "bin")) + { + size_t skip = stream->cdrom.byte_pos % 2352; + unsigned char min = 0; + unsigned char sec = 0; + unsigned char frame = 0; + + lba_to_msf(stream->cdrom.cur_lba, &min, &sec, &frame); + +#ifdef CDROM_DEBUG + printf("CDROM Read: Reading %" PRIu64 " bytes from %s starting at byte offset %" PRIu64 " (MSF %02u:%02u:%02u) (LBA %u) skip %" PRIu64 "...\n", len, stream->orig_path, stream->cdrom.byte_pos, (unsigned)min, (unsigned)sec, (unsigned)frame, stream->cdrom.cur_lba, skip); + fflush(stdout); +#endif + + rv = cdrom_read(stream, min, sec, frame, s, (size_t)len, skip); + + if (rv) + { +#ifdef CDROM_DEBUG + printf("Failed to read %" PRIu64 " bytes from CD.\n", len); + fflush(stdout); +#endif + return 0; + } + + stream->cdrom.byte_pos += len; + stream->cdrom.cur_lba = vfs_cdrom_toc.track[stream->cdrom.cur_track - 1].lba + (stream->cdrom.byte_pos / 2352); + lba_to_msf(stream->cdrom.cur_lba, &stream->cdrom.cur_min, &stream->cdrom.cur_sec, &stream->cdrom.cur_frame); + +#ifdef CDROM_DEBUG + printf("CDROM read %" PRIu64 " bytes, position is now: %" PRIu64 " (MSF %02u:%02u:%02u) (LBA %u)\n", len, stream->cdrom.byte_pos, (unsigned)stream->cdrom.cur_min, (unsigned)stream->cdrom.cur_sec, (unsigned)stream->cdrom.cur_frame, msf_to_lba(stream->cdrom.cur_min, stream->cdrom.cur_sec, stream->cdrom.cur_frame)); + fflush(stdout); +#endif + + return len; + } + + return 0; +} + +int retro_vfs_file_error_cdrom(libretro_vfs_implementation_file *stream) +{ + return 0; +} + +const vfs_cdrom_t* retro_vfs_file_get_cdrom_position(const libretro_vfs_implementation_file *stream) +{ + return &stream->cdrom; +}