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https://github.com/libretro/scummvm.git
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172 lines
4.1 KiB
C++
172 lines
4.1 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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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, either version 3 of the License, or
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* (at your option) any later version.
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*
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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 for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/scummsys.h" // for USE_THEORADEC
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#ifdef USE_THEORADEC
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#ifndef VIDEO_THEORA_DECODER_H
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#define VIDEO_THEORA_DECODER_H
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#include "common/rational.h"
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#include "video/video_decoder.h"
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#include "audio/mixer.h"
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#include "graphics/surface.h"
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#include <theora/theoradec.h>
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#ifdef USE_TREMOR
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#include <tremor/ivorbiscodec.h>
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#else
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#include <vorbis/codec.h>
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#endif
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namespace Common {
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class SeekableReadStream;
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}
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namespace Audio {
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class AudioStream;
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class QueuingAudioStream;
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}
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namespace Video {
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/**
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*
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* Decoder for Theora videos.
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* Video decoder used in engines:
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* - pegasus
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* - sword25
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* - wintermute
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*/
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class TheoraDecoder : public VideoDecoder {
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public:
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TheoraDecoder();
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virtual ~TheoraDecoder();
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/**
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* Load a video file
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* @param stream the stream to load
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*/
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bool loadStream(Common::SeekableReadStream *stream);
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void close();
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/** Frames per second of the loaded video. */
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Common::Rational getFrameRate() const;
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protected:
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void readNextPacket();
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private:
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class TheoraVideoTrack : public VideoTrack {
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public:
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TheoraVideoTrack(th_info &theoraInfo, th_setup_info *theoraSetup);
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~TheoraVideoTrack();
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bool endOfTrack() const { return _endOfVideo; }
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uint16 getWidth() const { return _width; }
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uint16 getHeight() const { return _height; }
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Graphics::PixelFormat getPixelFormat() const { return _pixelFormat; }
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bool setOutputPixelFormat(const Graphics::PixelFormat &format) { _pixelFormat = format; return true; }
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int getCurFrame() const { return _curFrame; }
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const Common::Rational &getFrameRate() const { return _frameRate; }
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uint32 getNextFrameStartTime() const { return (uint32)(_nextFrameStartTime * 1000); }
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const Graphics::Surface *decodeNextFrame() { return _displaySurface; }
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bool decodePacket(ogg_packet &oggPacket);
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void setEndOfVideo() { _endOfVideo = true; }
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private:
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int _curFrame;
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bool _endOfVideo;
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Common::Rational _frameRate;
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double _nextFrameStartTime;
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Graphics::Surface *_surface;
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Graphics::Surface *_displaySurface;
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Graphics::PixelFormat _pixelFormat;
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int _x;
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int _y;
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uint16 _width;
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uint16 _height;
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uint16 _surfaceWidth;
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uint16 _surfaceHeight;
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th_dec_ctx *_theoraDecode;
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th_pixel_fmt _theoraPixelFormat;
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void translateYUVtoRGBA(th_ycbcr_buffer &YUVBuffer);
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};
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class VorbisAudioTrack : public AudioTrack {
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public:
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VorbisAudioTrack(Audio::Mixer::SoundType soundType, vorbis_info &vorbisInfo);
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~VorbisAudioTrack();
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bool decodeSamples();
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bool hasAudio() const;
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bool needsAudio() const;
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void synthesizePacket(ogg_packet &oggPacket);
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void setEndOfAudio() { _endOfAudio = true; }
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protected:
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Audio::AudioStream *getAudioStream() const;
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private:
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// single audio fragment audio buffering
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int _audioBufferFill;
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ogg_int16_t *_audioBuffer;
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Audio::QueuingAudioStream *_audStream;
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vorbis_block _vorbisBlock;
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vorbis_dsp_state _vorbisDSP;
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bool _endOfAudio;
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};
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void queuePage(ogg_page *page);
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int bufferData();
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bool queueAudio();
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void ensureAudioBufferSize();
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Common::SeekableReadStream *_fileStream;
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ogg_sync_state _oggSync;
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ogg_page _oggPage;
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ogg_packet _oggPacket;
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ogg_stream_state _theoraOut, _vorbisOut;
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bool _hasVideo, _hasAudio;
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vorbis_info _vorbisInfo;
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TheoraVideoTrack *_videoTrack;
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VorbisAudioTrack *_audioTrack;
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};
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} // End of namespace Video
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#endif
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#endif
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