mirror of
https://github.com/hrydgard/ppsspp.git
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142 lines
3.7 KiB
C++
142 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();
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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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bool setVideoDim(int width = 0, int height = 0);
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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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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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// used for audio type
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int m_audioType;
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};
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