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https://github.com/hrydgard/ppsspp.git
synced 2024-11-24 05:49:58 +00:00
558b4620e8
Without doing this, FFmpeg will try to probe the streams to detect them instead. When it does this, sometimes it tries to read beyond the data that's available - and then gets confused by EOFs. Parsing this way allows us to control the situation. An example is Valkyrie Profile, corruption in the first frames of the second video during the intro. Thi doesn't fix it yet, but now it's just a matter of buffering.
144 lines
3.7 KiB
C++
144 lines
3.7 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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// Simulation of the hardware video/audio decoders.
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// The idea is high level emulation where we simply use FFMPEG.
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#pragma once
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// An approximation of what the interface will look like. Similar to JPCSP's.
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#include <map>
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#include "Common/CommonTypes.h"
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#include "Core/HLE/sceMpeg.h"
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#include "Core/HW/MpegDemux.h"
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#include "Core/HW/SimpleAudioDec.h"
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class PointerWrap;
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class SimpleAudio;
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#ifdef USE_FFMPEG
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struct SwsContext;
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struct AVFrame;
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struct AVIOContext;
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struct AVFormatContext;
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struct AVCodecContext;
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#endif
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inline s64 getMpegTimeStamp(const u8 *buf) {
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return (s64)buf[5] | ((s64)buf[4] << 8) | ((s64)buf[3] << 16) | ((s64)buf[2] << 24)
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| ((s64)buf[1] << 32) | ((s64)buf[0] << 36);
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}
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#ifdef USE_FFMPEG
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bool InitFFmpeg();
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#endif
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class MediaEngine
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{
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public:
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MediaEngine();
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~MediaEngine();
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void closeMedia();
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bool loadStream(const u8 *buffer, int readSize, int RingbufferSize);
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bool reloadStream();
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// open the mpeg context
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bool openContext(bool keepReadPos = false);
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void closeContext();
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// Returns number of packets actually added. I guess the buffer might be full.
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int addStreamData(const u8 *buffer, int addSize);
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bool seekTo(s64 timestamp, int videoPixelMode);
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bool setVideoStream(int streamNum, bool force = false);
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// TODO: Return false if the stream doesn't exist.
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bool setAudioStream(int streamNum) { m_audioStream = streamNum; return true; }
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u8 *getFrameImage();
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int getRemainSize();
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int getAudioRemainSize();
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bool stepVideo(int videoPixelMode, bool skipFrame = false);
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int writeVideoImage(u32 bufferPtr, int frameWidth = 512, int videoPixelMode = 3);
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int writeVideoImageWithRange(u32 bufferPtr, int frameWidth, int videoPixelMode,
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int xpos, int ypos, int width, int height);
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int getAudioSamples(u32 bufferPtr);
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s64 getVideoTimeStamp();
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s64 getAudioTimeStamp();
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s64 getLastTimeStamp();
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bool IsVideoEnd() { return m_isVideoEnd; }
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bool IsNoAudioData();
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int VideoWidth() { return m_desWidth; }
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int VideoHeight() { return m_desHeight; }
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void DoState(PointerWrap &p);
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private:
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bool SetupStreams();
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bool setVideoDim(int width = 0, int height = 0);
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void updateSwsFormat(int videoPixelMode);
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int getNextAudioFrame(u8 **buf, int *headerCode1, int *headerCode2);
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public: // TODO: Very little of this below should be public.
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// Video ffmpeg context - not used for audio
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#ifdef USE_FFMPEG
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AVFormatContext *m_pFormatCtx;
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std::map<int, AVCodecContext *> m_pCodecCtxs;
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AVFrame *m_pFrame;
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AVFrame *m_pFrameRGB;
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AVIOContext *m_pIOContext;
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SwsContext *m_sws_ctx;
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#endif
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int m_sws_fmt;
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u8 *m_buffer;
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int m_videoStream;
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// Used by the demuxer.
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int m_audioStream;
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int m_desWidth;
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int m_desHeight;
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int m_decodingsize;
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int m_bufSize;
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s64 m_videopts;
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BufferQueue *m_pdata;
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MpegDemux *m_demux;
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SimpleAudio *m_audioContext;
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s64 m_audiopts;
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s64 m_firstTimeStamp;
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s64 m_lastTimeStamp;
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bool m_isVideoEnd;
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int m_ringbuffersize;
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u8 m_mpegheader[0x10000]; // TODO: Allocate separately
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int m_mpegheaderReadPos;
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int m_mpegheaderSize;
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// used for audio type
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int m_audioType;
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};
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