ppsspp/Core/HW/MediaEngine.h
2013-09-18 14:05:09 +08:00

118 lines
3.0 KiB
C++

// Copyright (c) 2012- PPSSPP Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program 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 General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
// Simulation of the hardware video/audio decoders.
// The idea is high level emulation where we simply use FFMPEG.
// TODO: Actually hook up to ffmpeg.
#pragma once
// An approximation of what the interface will look like. Similar to JPCSP's.
#include "../../Globals.h"
#include "../HLE/sceMpeg.h"
#include "ChunkFile.h"
#include "Core/HW/MpegDemux.h"
struct SwsContext;
struct AVFrame;
struct AVIOContext;
struct AVFormatContext;
struct AVCodecContext;
inline s64 getMpegTimeStamp(u8* buf) {
return (s64)buf[5] | ((s64)buf[4] << 8) | ((s64)buf[3] << 16) | ((s64)buf[2] << 24)
| ((s64)buf[1] << 32) | ((s64)buf[0] << 36);
}
bool InitFFmpeg();
class MediaEngine
{
public:
MediaEngine();
~MediaEngine();
void closeMedia();
bool loadStream(u8* buffer, int readSize, int RingbufferSize);
// open the mpeg context
bool openContext();
// Returns number of packets actually added.
int addStreamData(u8* buffer, int addSize);
void setVideoStream(int streamNum) { m_videoStream = streamNum; }
void setAudioStream(int streamNum) { m_audioStream = streamNum; }
u8 *getFrameImage();
int getRemainSize();
bool stepVideo(int videoPixelMode);
int writeVideoImage(u8* buffer, int frameWidth = 512, int videoPixelMode = 3);
int writeVideoImageWithRange(u8* buffer, int frameWidth, int videoPixelMode,
int xpos, int ypos, int width, int height);
int getAudioSamples(u8* buffer);
bool setVideoDim(int width = 0, int height = 0);
s64 getVideoTimeStamp();
s64 getAudioTimeStamp();
s64 getLastTimeStamp();
bool IsVideoEnd() { return m_isVideoEnd; }
bool IsNoAudioData() { return m_noAudioData; }
void DoState(PointerWrap &p);
private:
void updateSwsFormat(int videoPixelMode);
public:
AVFormatContext *m_pFormatCtx;
AVCodecContext *m_pCodecCtx;
AVFrame *m_pFrame;
AVFrame *m_pFrameRGB;
AVIOContext *m_pIOContext;
SwsContext *m_sws_ctx;
int m_sws_fmt;
u8 *m_buffer;
int m_videoStream;
int m_audioStream;
int m_desWidth;
int m_desHeight;
int m_decodingsize;
int m_bufSize;
s64 m_videopts;
Atrac3plus_Decoder::BufferQueue *m_pdata;
MpegDemux *m_demux;
void* m_audioContext;
s64 m_audiopts;
s64 m_firstTimeStamp;
s64 m_lastTimeStamp;
bool m_isVideoEnd;
bool m_noAudioData;
int m_ringbuffersize;
u8 m_mpegheader[0x10000];
int m_mpegheaderReadPos;
};