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ppsspp/ext/at3_standalone/utils.c
Henrik Rydgård 34afd585c7 Delete all kinds of stuff
2024-04-11 14:39:59 +02:00

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/*
* utils for libavcodec
* Copyright (c) 2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* utils.
*/
#include "util_internal.h"
#include "config.h"
#include "avcodec.h"
#include "attributes.h"
#include "channel_layout.h"
#include "frame.h"
#include "internal.h"
#include "mathematics.h"
#include "avstring.h"
#include "samplefmt.h"
#include "avcodec.h"
#include "opt.h"
#include "internal.h"
#include "bytestream.h"
#include "version.h"
#include <stdlib.h>
#include <stdarg.h>
#include <limits.h>
#include <float.h>
static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
volatile int ff_avcodec_locked;
static int volatile entangled_thread_counter = 0;
static void *codec_mutex;
static void *avformat_mutex;
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
{
uint8_t **p = ptr;
if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
av_freep(p);
*size = 0;
return;
}
if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
}
void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
{
uint8_t **p = ptr;
if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
av_freep(p);
*size = 0;
return;
}
if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
}
/* encoder management */
static AVCodec *first_avcodec = NULL;
static AVCodec **last_avcodec = &first_avcodec;
AVCodec *av_codec_next(const AVCodec *c)
{
if (c)
return c->next;
else
return first_avcodec;
}
static av_cold void avcodec_init(void)
{
static int initialized = 0;
if (initialized != 0)
return;
initialized = 1;
}
int av_codec_is_encoder(const AVCodec *codec)
{
return codec && (codec->encode_sub || codec->encode2);
}
int av_codec_is_decoder(const AVCodec *codec)
{
return codec && codec->decode;
}
#if FF_API_EMU_EDGE
unsigned avcodec_get_edge_width(void)
{
return EDGE_WIDTH;
}
#endif
int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
enum AVSampleFormat sample_fmt, const uint8_t *buf,
int buf_size, int align)
{
int ch, planar, needed_size, ret = 0;
needed_size = av_samples_get_buffer_size(NULL, nb_channels,
frame->nb_samples, sample_fmt,
align);
if (buf_size < needed_size)
return AVERROR(EINVAL);
planar = av_sample_fmt_is_planar(sample_fmt);
if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
if (!(frame->extended_data = av_mallocz_array(nb_channels,
sizeof(*frame->extended_data))))
return AVERROR(ENOMEM);
} else {
frame->extended_data = frame->data;
}
if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
(uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
sample_fmt, align)) < 0) {
if (frame->extended_data != frame->data)
av_freep(&frame->extended_data);
return ret;
}
if (frame->extended_data != frame->data) {
for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
frame->data[ch] = frame->extended_data[ch];
}
return ret;
}
static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
{
FramePool *pool = avctx->internal->pool;
int i, ret;
switch (avctx->codec_type) {
case AVMEDIA_TYPE_AUDIO: {
int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
int planar = av_sample_fmt_is_planar(frame->format);
int planes = planar ? ch : 1;
if (pool->format == frame->format && pool->planes == planes &&
pool->channels == ch && frame->nb_samples == pool->samples)
return 0;
av_buffer_pool_uninit(&pool->pools[0]);
ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
frame->nb_samples, frame->format, 0);
if (ret < 0)
goto fail;
pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
if (!pool->pools[0]) {
ret = AVERROR(ENOMEM);
goto fail;
}
pool->format = frame->format;
pool->planes = planes;
pool->channels = ch;
pool->samples = frame->nb_samples;
break;
}
default: av_assert0(0);
}
return 0;
fail:
for (i = 0; i < 4; i++)
av_buffer_pool_uninit(&pool->pools[i]);
pool->format = -1;
pool->planes = pool->channels = pool->samples = 0;
pool->width = pool->height = 0;
return ret;
}
static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
{
FramePool *pool = avctx->internal->pool;
int planes = pool->planes;
int i;
frame->linesize[0] = pool->linesize[0];
if (planes > AV_NUM_DATA_POINTERS) {
frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
frame->extended_buf = av_mallocz_array(frame->nb_extended_buf,
sizeof(*frame->extended_buf));
if (!frame->extended_data || !frame->extended_buf) {
av_freep(&frame->extended_data);
av_freep(&frame->extended_buf);
return AVERROR(ENOMEM);
}
} else {
frame->extended_data = frame->data;
av_assert0(frame->nb_extended_buf == 0);
}
for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
if (!frame->buf[i])
goto fail;
frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
}
for (i = 0; i < frame->nb_extended_buf; i++) {
frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
if (!frame->extended_buf[i])
goto fail;
frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
}
return 0;
fail:
av_frame_unref(frame);
return AVERROR(ENOMEM);
}
int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
{
int ret;
if ((ret = update_frame_pool(avctx, frame)) < 0)
return ret;
switch (avctx->codec_type) {
case AVMEDIA_TYPE_AUDIO:
return audio_get_buffer(avctx, frame);
default:
return -1;
}
}
int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
{
AVPacket *pkt = avctx->internal->pkt;
if (pkt) {
av_frame_set_pkt_pos (frame, pkt->pos);
av_frame_set_pkt_duration(frame, pkt->duration);
av_frame_set_pkt_size (frame, pkt->size);
} else {
av_frame_set_pkt_pos (frame, -1);
av_frame_set_pkt_duration(frame, 0);
av_frame_set_pkt_size (frame, -1);
}
switch (avctx->codec->type) {
case AVMEDIA_TYPE_AUDIO:
if (!frame->sample_rate)
frame->sample_rate = avctx->sample_rate;
if (frame->format < 0)
frame->format = avctx->sample_fmt;
if (!frame->channel_layout) {
if (avctx->channel_layout) {
if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
avctx->channels) {
av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
"configuration.\n");
return AVERROR(EINVAL);
}
frame->channel_layout = avctx->channel_layout;
} else {
if (avctx->channels > FF_SANE_NB_CHANNELS) {
av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
avctx->channels);
return AVERROR(ENOSYS);
}
}
}
av_frame_set_channels(frame, avctx->channels);
break;
}
return 0;
}
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
{
int override_dimensions = 1;
int ret;
ret = ff_init_buffer_info(avctx, frame);
if (ret < 0)
return ret;
ret = avctx->get_buffer2(avctx, frame, flags);
return ret;
}
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
{
int i;
for (i = 0; i < count; i++) {
int r = func(c, (char *)arg + i * size);
if (ret)
ret[i] = r;
}
return 0;
}
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
{
int i;
for (i = 0; i < count; i++) {
int r = func(c, arg, i, 0);
if (ret)
ret[i] = r;
}
return 0;
}
MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
{
return codec->properties;
}
static int64_t get_bit_rate(AVCodecContext *ctx)
{
int64_t bit_rate;
int bits_per_sample;
switch (ctx->codec_type) {
case AVMEDIA_TYPE_DATA:
case AVMEDIA_TYPE_SUBTITLE:
case AVMEDIA_TYPE_ATTACHMENT:
bit_rate = ctx->bit_rate;
break;
case AVMEDIA_TYPE_AUDIO:
bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
bit_rate = bits_per_sample ? ctx->sample_rate * (int64_t)ctx->channels * bits_per_sample : ctx->bit_rate;
break;
default:
bit_rate = 0;
break;
}
return bit_rate;
}
int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
{
int ret = 0;
ff_unlock_avcodec(codec);
ret = avcodec_open2(avctx, codec, options);
ff_lock_avcodec(avctx, codec);
return ret;
}
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
{
int ret = 0;
if (avcodec_is_open(avctx))
return 0;
if ((codec && avctx->codec && codec != avctx->codec)) {
av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
"but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
return AVERROR(EINVAL);
}
if (!codec)
codec = avctx->codec;
if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
return AVERROR(EINVAL);
ret = ff_lock_avcodec(avctx, codec);
if (ret < 0)
return ret;
avctx->internal = av_mallocz(sizeof(AVCodecInternal));
if (!avctx->internal) {
ret = AVERROR(ENOMEM);
goto end;
}
avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
if (!avctx->internal->pool) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avctx->internal->to_free = av_frame_alloc();
if (!avctx->internal->to_free) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
if (codec->priv_data_size > 0) {
if (!avctx->priv_data) {
avctx->priv_data = av_mallocz(codec->priv_data_size);
if (!avctx->priv_data) {
ret = AVERROR(ENOMEM);
goto end;
}
if (codec->priv_class) {
*(const AVClass **)avctx->priv_data = codec->priv_class;
av_opt_set_defaults(avctx->priv_data);
}
}
} else {
avctx->priv_data = NULL;
}
/* if the decoder init function was already called previously,
* free the already allocated subtitle_header before overwriting it */
if (av_codec_is_decoder(codec))
av_freep(&avctx->subtitle_header);
if (avctx->channels > FF_SANE_NB_CHANNELS) {
ret = AVERROR(EINVAL);
goto free_and_end;
}
avctx->codec = codec;
if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
avctx->codec_id == AV_CODEC_ID_NONE) {
avctx->codec_type = codec->type;
avctx->codec_id = codec->id;
}
if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
&& avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}
avctx->frame_number = 0;
if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
(!avctx->time_base.num || !avctx->time_base.den)) {
avctx->time_base.num = 1;
avctx->time_base.den = avctx->sample_rate;
}
#if FF_API_VISMV
if (avctx->debug_mv)
av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
"see the codecview filter instead.\n");
#endif
avctx->pts_correction_num_faulty_pts =
avctx->pts_correction_num_faulty_dts = 0;
avctx->pts_correction_last_pts =
avctx->pts_correction_last_dts = INT64_MIN;
if (avctx->codec->init) {
ret = avctx->codec->init(avctx);
if (ret < 0) {
goto free_and_end;
}
}
ret=0;
#if FF_API_AUDIOENC_DELAY
if (av_codec_is_encoder(avctx->codec))
avctx->delay = avctx->initial_padding;
#endif
if (av_codec_is_decoder(avctx->codec)) {
if (!avctx->bit_rate)
avctx->bit_rate = get_bit_rate(avctx);
/* validate channel layout from the decoder */
if (avctx->channel_layout) {
int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
if (!avctx->channels)
avctx->channels = channels;
else if (channels != avctx->channels) {
char buf[512] = "";
av_log(avctx, AV_LOG_WARNING,
"Channel layout '%s' with %d channels does not match specified number of channels %d: "
"ignoring specified channel layout\n",
buf, channels, avctx->channels);
avctx->channel_layout = 0;
}
}
if (avctx->channels && avctx->channels < 0 ||
avctx->channels > FF_SANE_NB_CHANNELS) {
ret = AVERROR(EINVAL);
goto free_and_end;
}
#if FF_API_AVCTX_TIMEBASE
if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
#endif
}
if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
}
end:
ff_unlock_avcodec(codec);
return ret;
free_and_end:
if (avctx->codec &&
(avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
avctx->codec->close(avctx);
if (codec->priv_class && codec->priv_data_size)
av_opt_free(avctx->priv_data);
av_opt_free(avctx);
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
av_frame_free(&avctx->coded_frame);
FF_ENABLE_DEPRECATION_WARNINGS
#endif
av_freep(&avctx->priv_data);
if (avctx->internal) {
av_frame_free(&avctx->internal->to_free);
av_freep(&avctx->internal->pool);
}
av_freep(&avctx->internal);
avctx->codec = NULL;
goto end;
}
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
{
if (avpkt->size < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
return AVERROR(EINVAL);
}
if (size < 0 || size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
size, INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE);
return AVERROR(EINVAL);
}
if (avctx && 2*min_size < size) { // FIXME The factor needs to be finetuned
av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
if (!avpkt->data || avpkt->size < size) {
av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
avpkt->data = avctx->internal->byte_buffer;
avpkt->size = avctx->internal->byte_buffer_size;
}
}
if (avpkt->data) {
AVBufferRef *buf = avpkt->buf;
if (avpkt->size < size) {
av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
return AVERROR(EINVAL);
}
av_init_packet(avpkt);
avpkt->buf = buf;
avpkt->size = size;
return 0;
} else {
int ret = av_new_packet(avpkt, size);
if (ret < 0)
av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
return ret;
}
}
int ff_alloc_packet(AVPacket *avpkt, int size)
{
return ff_alloc_packet2(NULL, avpkt, size, 0);
}
av_cold int avcodec_close(AVCodecContext *avctx)
{
int i;
if (!avctx)
return 0;
if (avcodec_is_open(avctx)) {
FramePool *pool = avctx->internal->pool;
if (avctx->codec && avctx->codec->close)
avctx->codec->close(avctx);
avctx->internal->byte_buffer_size = 0;
av_freep(&avctx->internal->byte_buffer);
av_frame_free(&avctx->internal->to_free);
for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
av_buffer_pool_uninit(&pool->pools[i]);
av_freep(&avctx->internal->pool);
av_freep(&avctx->internal);
}
if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
av_opt_free(avctx->priv_data);
av_opt_free(avctx);
av_freep(&avctx->priv_data);
if (av_codec_is_encoder(avctx->codec)) {
av_freep(&avctx->extradata);
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
av_frame_free(&avctx->coded_frame);
FF_ENABLE_DEPRECATION_WARNINGS
#endif
}
avctx->codec = NULL;
return 0;
}
static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
{
switch(id){
//This is for future deprecatec codec ids, its empty since
//last major bump but will fill up again over time, please don't remove it
default : return id;
}
}
static AVCodec *find_encdec(enum AVCodecID id, int encoder)
{
AVCodec *p, *experimental = NULL;
p = first_avcodec;
id= remap_deprecated_codec_id(id);
while (p) {
if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
p->id == id) {
if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
experimental = p;
} else
return p;
}
p = p->next;
}
return experimental;
}
AVCodec *avcodec_find_encoder(enum AVCodecID id)
{
return find_encdec(id, 1);
}
AVCodec *avcodec_find_encoder_by_name(const char *name)
{
AVCodec *p;
if (!name)
return NULL;
p = first_avcodec;
while (p) {
if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
return p;
p = p->next;
}
return NULL;
}
AVCodec *avcodec_find_decoder(enum AVCodecID id)
{
return find_encdec(id, 0);
}
AVCodec *avcodec_find_decoder_by_name(const char *name)
{
AVCodec *p;
if (!name)
return NULL;
p = first_avcodec;
while (p) {
if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
return p;
p = p->next;
}
return NULL;
}
void avcodec_flush_buffers(AVCodecContext *avctx)
{
if (avctx->codec->flush)
avctx->codec->flush(avctx);
avctx->pts_correction_last_pts =
avctx->pts_correction_last_dts = INT64_MIN;
if (!avctx->refcounted_frames)
av_frame_unref(avctx->internal->to_free);
}
int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
{
switch (codec_id) {
case AV_CODEC_ID_8SVX_EXP:
case AV_CODEC_ID_8SVX_FIB:
case AV_CODEC_ID_ADPCM_CT:
case AV_CODEC_ID_ADPCM_IMA_APC:
case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
case AV_CODEC_ID_ADPCM_IMA_OKI:
case AV_CODEC_ID_ADPCM_IMA_WS:
case AV_CODEC_ID_ADPCM_G722:
case AV_CODEC_ID_ADPCM_YAMAHA:
case AV_CODEC_ID_ADPCM_AICA:
return 4;
case AV_CODEC_ID_DSD_LSBF:
case AV_CODEC_ID_DSD_MSBF:
case AV_CODEC_ID_DSD_LSBF_PLANAR:
case AV_CODEC_ID_DSD_MSBF_PLANAR:
case AV_CODEC_ID_PCM_ALAW:
case AV_CODEC_ID_PCM_MULAW:
case AV_CODEC_ID_PCM_S8:
case AV_CODEC_ID_PCM_S8_PLANAR:
case AV_CODEC_ID_PCM_U8:
case AV_CODEC_ID_PCM_ZORK:
case AV_CODEC_ID_SDX2_DPCM:
return 8;
case AV_CODEC_ID_PCM_S16BE:
case AV_CODEC_ID_PCM_S16BE_PLANAR:
case AV_CODEC_ID_PCM_S16LE:
case AV_CODEC_ID_PCM_S16LE_PLANAR:
case AV_CODEC_ID_PCM_U16BE:
case AV_CODEC_ID_PCM_U16LE:
return 16;
case AV_CODEC_ID_PCM_S24DAUD:
case AV_CODEC_ID_PCM_S24BE:
case AV_CODEC_ID_PCM_S24LE:
case AV_CODEC_ID_PCM_S24LE_PLANAR:
case AV_CODEC_ID_PCM_U24BE:
case AV_CODEC_ID_PCM_U24LE:
return 24;
case AV_CODEC_ID_PCM_S32BE:
case AV_CODEC_ID_PCM_S32LE:
case AV_CODEC_ID_PCM_S32LE_PLANAR:
case AV_CODEC_ID_PCM_U32BE:
case AV_CODEC_ID_PCM_U32LE:
case AV_CODEC_ID_PCM_F32BE:
case AV_CODEC_ID_PCM_F32LE:
return 32;
case AV_CODEC_ID_PCM_F64BE:
case AV_CODEC_ID_PCM_F64LE:
return 64;
default:
return 0;
}
}
enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
{
static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
[AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
[AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
[AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
[AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
[AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
[AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 },
[AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE },
[AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE },
[AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE },
[AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE },
};
if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
return AV_CODEC_ID_NONE;
if (be < 0 || be > 1)
be = AV_NE(1, 0);
return map[fmt][be];
}
int av_get_bits_per_sample(enum AVCodecID codec_id)
{
switch (codec_id) {
case AV_CODEC_ID_ADPCM_SBPRO_2:
return 2;
case AV_CODEC_ID_ADPCM_SBPRO_3:
return 3;
case AV_CODEC_ID_ADPCM_SBPRO_4:
case AV_CODEC_ID_ADPCM_IMA_WAV:
case AV_CODEC_ID_ADPCM_IMA_QT:
case AV_CODEC_ID_ADPCM_SWF:
case AV_CODEC_ID_ADPCM_MS:
return 4;
default:
return av_get_exact_bits_per_sample(codec_id);
}
}
int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
{
int id, sr, ch, ba, tag, bps;
id = avctx->codec_id;
sr = avctx->sample_rate;
ch = avctx->channels;
ba = avctx->block_align;
tag = avctx->codec_tag;
bps = av_get_exact_bits_per_sample(avctx->codec_id);
/* codecs with an exact constant bits per sample */
if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
return (frame_bytes * 8LL) / (bps * ch);
bps = avctx->bits_per_coded_sample;
/* codecs with a fixed packet duration */
switch (id) {
case AV_CODEC_ID_ADPCM_ADX: return 32;
case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
case AV_CODEC_ID_AMR_NB:
case AV_CODEC_ID_EVRC:
case AV_CODEC_ID_GSM:
case AV_CODEC_ID_QCELP:
case AV_CODEC_ID_RA_288: return 160;
case AV_CODEC_ID_AMR_WB:
case AV_CODEC_ID_GSM_MS: return 320;
case AV_CODEC_ID_MP1: return 384;
case AV_CODEC_ID_ATRAC1: return 512;
case AV_CODEC_ID_ATRAC3: return 1024;
case AV_CODEC_ID_ATRAC3P: return 2048;
case AV_CODEC_ID_MP2:
case AV_CODEC_ID_MUSEPACK7: return 1152;
case AV_CODEC_ID_AC3: return 1536;
}
if (sr > 0) {
/* calc from sample rate */
if (id == AV_CODEC_ID_TTA)
return 256 * sr / 245;
if (ch > 0) {
/* calc from sample rate and channels */
if (id == AV_CODEC_ID_BINKAUDIO_DCT)
return (480 << (sr / 22050)) / ch;
}
}
if (ba > 0) {
/* calc from block_align */
if (id == AV_CODEC_ID_SIPR) {
switch (ba) {
case 20: return 160;
case 19: return 144;
case 29: return 288;
case 37: return 480;
}
} else if (id == AV_CODEC_ID_ILBC) {
switch (ba) {
case 38: return 160;
case 50: return 240;
}
}
}
if (frame_bytes > 0) {
/* calc from frame_bytes only */
if (id == AV_CODEC_ID_TRUESPEECH)
return 240 * (frame_bytes / 32);
if (id == AV_CODEC_ID_NELLYMOSER)
return 256 * (frame_bytes / 64);
if (id == AV_CODEC_ID_RA_144)
return 160 * (frame_bytes / 20);
if (id == AV_CODEC_ID_G723_1)
return 240 * (frame_bytes / 24);
if (bps > 0) {
/* calc from frame_bytes and bits_per_coded_sample */
if (id == AV_CODEC_ID_ADPCM_G726)
return frame_bytes * 8 / bps;
}
if (ch > 0 && ch < INT_MAX/16) {
/* calc from frame_bytes and channels */
switch (id) {
case AV_CODEC_ID_ADPCM_AFC:
return frame_bytes / (9 * ch) * 16;
case AV_CODEC_ID_ADPCM_PSX:
case AV_CODEC_ID_ADPCM_DTK:
return frame_bytes / (16 * ch) * 28;
case AV_CODEC_ID_ADPCM_4XM:
case AV_CODEC_ID_ADPCM_IMA_ISS:
return (frame_bytes - 4 * ch) * 2 / ch;
case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
return (frame_bytes - 4) * 2 / ch;
case AV_CODEC_ID_ADPCM_IMA_AMV:
return (frame_bytes - 8) * 2 / ch;
case AV_CODEC_ID_ADPCM_THP:
case AV_CODEC_ID_ADPCM_THP_LE:
if (avctx->extradata)
return frame_bytes * 14 / (8 * ch);
break;
case AV_CODEC_ID_ADPCM_XA:
return (frame_bytes / 128) * 224 / ch;
case AV_CODEC_ID_INTERPLAY_DPCM:
return (frame_bytes - 6 - ch) / ch;
case AV_CODEC_ID_ROQ_DPCM:
return (frame_bytes - 8) / ch;
case AV_CODEC_ID_XAN_DPCM:
return (frame_bytes - 2 * ch) / ch;
case AV_CODEC_ID_MACE3:
return 3 * frame_bytes / ch;
case AV_CODEC_ID_MACE6:
return 6 * frame_bytes / ch;
case AV_CODEC_ID_PCM_LXF:
return 2 * (frame_bytes / (5 * ch));
case AV_CODEC_ID_IAC:
case AV_CODEC_ID_IMC:
return 4 * frame_bytes / ch;
}
if (tag) {
/* calc from frame_bytes, channels, and codec_tag */
if (id == AV_CODEC_ID_SOL_DPCM) {
if (tag == 3)
return frame_bytes / ch;
else
return frame_bytes * 2 / ch;
}
}
if (ba > 0) {
/* calc from frame_bytes, channels, and block_align */
int blocks = frame_bytes / ba;
switch (avctx->codec_id) {
case AV_CODEC_ID_ADPCM_IMA_WAV:
if (bps < 2 || bps > 5)
return 0;
return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
case AV_CODEC_ID_ADPCM_IMA_DK3:
return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
case AV_CODEC_ID_ADPCM_IMA_DK4:
return blocks * (1 + (ba - 4 * ch) * 2 / ch);
case AV_CODEC_ID_ADPCM_IMA_RAD:
return blocks * ((ba - 4 * ch) * 2 / ch);
case AV_CODEC_ID_ADPCM_MS:
return blocks * (2 + (ba - 7 * ch) * 2 / ch);
}
}
if (bps > 0) {
/* calc from frame_bytes, channels, and bits_per_coded_sample */
switch (avctx->codec_id) {
case AV_CODEC_ID_PCM_DVD:
if(bps<4)
return 0;
return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
case AV_CODEC_ID_PCM_BLURAY:
if(bps<4)
return 0;
return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
case AV_CODEC_ID_S302M:
return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
}
}
}
}
/* Fall back on using frame_size */
if (avctx->frame_size > 1 && frame_bytes)
return avctx->frame_size;
//For WMA we currently have no other means to calculate duration thus we
//do it here by assuming CBR, which is true for all known cases.
if (avctx->bit_rate>0 && frame_bytes>0 && avctx->sample_rate>0 && avctx->block_align>1) {
if (avctx->codec_id == AV_CODEC_ID_WMAV1 || avctx->codec_id == AV_CODEC_ID_WMAV2)
return (frame_bytes * 8LL * avctx->sample_rate) / avctx->bit_rate;
}
return 0;
}
#if !HAVE_THREADS
int ff_thread_init(AVCodecContext *s)
{
return -1;
}
#endif
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
{
unsigned int n = 0;
while (v >= 0xff) {
*s++ = 0xff;
v -= 0xff;
n++;
}
*s = v;
n++;
return n;
}
int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
{
int i;
for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
return i;
}
#if FF_API_MISSING_SAMPLE
FF_DISABLE_DEPRECATION_WARNINGS
void av_log_missing_feature(void *avc, const char *feature, int want_sample)
{
av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
"version to the newest one from Git. If the problem still "
"occurs, it means that your file has a feature which has not "
"been implemented.\n", feature);
if(want_sample)
av_log_ask_for_sample(avc, NULL);
}
void av_log_ask_for_sample(void *avc, const char *msg, ...)
{
va_list argument_list;
va_start(argument_list, msg);
if (msg)
av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
"of this file to ftp://upload.ffmpeg.org/incoming/ "
"and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
va_end(argument_list);
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif /* FF_API_MISSING_SAMPLE */
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
{
if (lockmgr_cb) {
// There is no good way to rollback a failure to destroy the
// mutex, so we ignore failures.
lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY);
lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
lockmgr_cb = NULL;
codec_mutex = NULL;
avformat_mutex = NULL;
}
if (cb) {
void *new_codec_mutex = NULL;
void *new_avformat_mutex = NULL;
int err;
if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
return err > 0 ? AVERROR_UNKNOWN : err;
}
if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
// Ignore failures to destroy the newly created mutex.
cb(&new_codec_mutex, AV_LOCK_DESTROY);
return err > 0 ? AVERROR_UNKNOWN : err;
}
lockmgr_cb = cb;
codec_mutex = new_codec_mutex;
avformat_mutex = new_avformat_mutex;
}
return 0;
}
int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
{
if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
return 0;
if (lockmgr_cb) {
if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
return -1;
}
av_assert0(!ff_avcodec_locked);
ff_avcodec_locked = 1;
return 0;
}
int ff_unlock_avcodec(const AVCodec *codec)
{
if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
return 0;
av_assert0(ff_avcodec_locked);
ff_avcodec_locked = 0;
if (lockmgr_cb) {
if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
return -1;
}
return 0;
}
int avpriv_lock_avformat(void)
{
if (lockmgr_cb) {
if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
return -1;
}
return 0;
}
int avpriv_unlock_avformat(void)
{
if (lockmgr_cb) {
if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
return -1;
}
return 0;
}
unsigned int avpriv_toupper4(unsigned int x)
{
return av_toupper(x & 0xFF) +
(av_toupper((x >> 8) & 0xFF) << 8) +
(av_toupper((x >> 16) & 0xFF) << 16) +
((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
}
int avcodec_is_open(AVCodecContext *s)
{
return !!s->internal;
}
const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
const uint8_t *end,
uint32_t *av_restrict state)
{
int i;
av_assert0(p <= end);
if (p >= end)
return end;
for (i = 0; i < 3; i++) {
uint32_t tmp = *state << 8;
*state = tmp + *(p++);
if (tmp == 0x100 || p == end)
return p;
}
while (p < end) {
if (p[-1] > 1 ) p += 3;
else if (p[-2] ) p += 2;
else if (p[-3]|(p[-1]-1)) p++;
else {
p++;
break;
}
}
p = FFMIN(p, end) - 4;
*state = AV_RB32(p);
return p + 4;
}
AVCPBProperties *av_cpb_properties_alloc(size_t *size)
{
AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
if (!props)
return NULL;
if (size)
*size = sizeof(*props);
props->vbv_delay = UINT64_MAX;
return props;
}
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