mirror of
https://github.com/hrydgard/ppsspp.git
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41f2999a2b
This mimics behavior with clamped sizes and wrap around, and also makes it easier to implement the garbage data handling the PSP has.
86 lines
2.8 KiB
C++
86 lines
2.8 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#pragma once
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#include "Common/Common.h"
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class PointerWrap;
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enum {
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ERROR_MPEG_BAD_VERSION = 0x80610002,
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ERROR_MPEG_NO_MEMORY = 0x80610022,
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ERROR_MPEG_INVALID_ADDR = 0x80610103,
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ERROR_MPEG_INVALID_VALUE = 0x806101fe,
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ERROR_MPEG_NO_DATA = 0x80618001,
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ERROR_MPEG_ALREADY_INIT = 0x80618005,
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ERROR_MPEG_NOT_YET_INIT = 0x80618009,
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ERROR_MPEG_AVC_INVALID_VALUE = 0x806201fe,
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ERROR_MPEG_AVC_DECODE_FATAL = 0x80628002,
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ERROR_JPEG_INVALID_VALUE = 0x80650051,
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};
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// MPEG statics.
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static const u32 PSMF_MAGIC = 0x464D5350;
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static const int PSMF_STREAM_VERSION_OFFSET = 0x4;
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static const int PSMF_STREAM_OFFSET_OFFSET = 0x8;
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static const int PSMF_STREAM_SIZE_OFFSET = 0xC;
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static const int PSMF_FIRST_TIMESTAMP_OFFSET = 0x54;
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static const int PSMF_LAST_TIMESTAMP_OFFSET = 0x5A;
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struct SceMpegAu {
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s64_le pts; // presentation time stamp
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s64_le dts; // decode time stamp
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u32_le esBuffer;
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u32_le esSize;
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void read(u32 addr);
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void write(u32 addr);
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};
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// As native in PSP ram
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struct SceMpegRingBuffer {
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// PSP info
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s32_le packets;
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// Misused: this is used as total read, but should be read offset (within ring.)
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s32_le packetsRead;
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s32_le packetsWritePos;
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s32_le packetsAvail; // pspsdk: unk2, noxa: iUnk0
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s32_le packetSize; // 2048
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u32_le data; // address, ring buffer
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u32_le callback_addr; // see sceMpegRingbufferPut
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s32_le callback_args;
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s32_le dataUpperBound;
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s32_le semaID; // unused?
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u32_le mpeg; // pointer to mpeg struct, fixed up in sceMpegCreate
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// Note: not available in all versions.
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u32_le gp;
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};
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void __MpegInit();
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void __MpegDoState(PointerWrap &p);
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void __MpegShutdown();
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void __MpegLoadModule(int version);
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void Register_sceMpeg();
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void Register_sceMpegbase();
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void __VideoPmpInit();
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void __VideoPmpDoState(PointerWrap &p);
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void __VideoPmpShutdown();
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