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mkv_decoder.h
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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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, either version 3 of the License, or
* (at your option) any later version.
*
* 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "common/scummsys.h" // for USE_VPX
#ifdef USE_VPX
#ifndef VIDEO_MKV_DECODER_H
#define VIDEO_MKV_DECODER_H
#include "common/queue.h"
#include "video/video_decoder.h"
#include "audio/mixer.h"
#include "graphics/surface.h"
#ifdef USE_TREMOR
#include <tremor/ivorbiscodec.h>
#else
#include <vorbis/codec.h>
#endif
#include <vpx/vpx_decoder.h>
#include <vpx/vp8dx.h>
namespace Common {
class SeekableReadStream;
}
namespace Audio {
class AudioStream;
class QueuingAudioStream;
}
namespace mkvparser {
class MkvReader;
class Cluster;
class Track;
class Tracks;
class Block;
class BlockEntry;
class Segment;
}
namespace Video {
class MkvReader;
/**
*
* Decoder for MKV/Webm videos.
* Video decoder used in engines:
* - sludge
*/
class MKVDecoder : public VideoDecoder {
public:
MKVDecoder();
virtual ~MKVDecoder();
/**
* Load a video file
* @param stream the stream to load
*/
bool loadStream(Common::SeekableReadStream *stream);
void close();
protected:
void readNextPacket();
private:
class VPXVideoTrack : public VideoTrack {
public:
VPXVideoTrack(const mkvparser::Track *const pTrack);
~VPXVideoTrack();
bool endOfTrack() const;
uint16 getWidth() const { return _width; }
uint16 getHeight() const { return _height; }
Graphics::PixelFormat getPixelFormat() const { return _pixelFormat; }
bool setOutputPixelFormat(const Graphics::PixelFormat &format) {
if (format.bytesPerPixel != 2 && format.bytesPerPixel != 4)
return false;
_pixelFormat = format;
return true;
}
int getCurFrame() const { return _curFrame; }
uint32 getNextFrameStartTime() const { return (uint32)(_nextFrameStartTime * 1000); }
const Graphics::Surface *decodeNextFrame();
bool decodeFrame(byte *frame, long size);
void setEndOfVideo() { _endOfVideo = true; }
private:
int _curFrame;
bool _endOfVideo;
double _nextFrameStartTime;
uint16 _width;
uint16 _height;
Graphics::PixelFormat _pixelFormat;
Graphics::Surface _surface;
Common::Queue<Graphics::Surface> _displayQueue;
vpx_codec_ctx_t *_codec = nullptr;
};
class VorbisAudioTrack : public AudioTrack {
public:
VorbisAudioTrack(const mkvparser::Track *const pTrack);
~VorbisAudioTrack();
bool decodeSamples(byte *frame, long size);
bool hasAudio() const;
bool needsAudio() const;
bool synthesizePacket(byte *frame, long size);
void setEndOfAudio() { _endOfAudio = true; }
protected:
Audio::AudioStream *getAudioStream() const;
private:
Audio::QueuingAudioStream *_audStream;
vorbis_block _vorbisBlock;
vorbis_dsp_state _vorbisDSP;
vorbis_info _vorbisInfo;
bool _endOfAudio;
ogg_packet oggPacket;
};
bool queueAudio(long size);
Common::SeekableReadStream *_fileStream;
bool _hasVideo, _hasAudio;
VPXVideoTrack *_videoTrack = nullptr;
VorbisAudioTrack *_audioTrack = nullptr;
mkvparser::MkvReader *_reader = nullptr;
const mkvparser::Cluster *_cluster = nullptr;
const mkvparser::Tracks *_pTracks = nullptr;
const mkvparser::BlockEntry *_pBlockEntry = nullptr;
mkvparser::Segment *_pSegment = nullptr;
byte *_frame = nullptr;
int _frameCounter = 0;
int _vTrack = -1;
int _aTrack = -1;
const mkvparser::Block *_pBlock;
long long _trackNum;
int _frameCount;
};
} // End of namespace Video
#endif
#endif