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b4647bc3f6
PR #4276 incorrectly assumed "rate" was the frame rate of the video, but it should be the playback rate. Revert that change. Instead, add an alternate API for fetching frame rate from TheoraDecoder.
163 lines
3.9 KiB
C++
163 lines
3.9 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(const Graphics::PixelFormat &format, 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 _displaySurface.w; }
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uint16 getHeight() const { return _displaySurface.h; }
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Graphics::PixelFormat getPixelFormat() const { return _displaySurface.format; }
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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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th_dec_ctx *_theoraDecode;
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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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