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Diffstat (limited to 'engines/sword25/fmv/theora_decoder.h')
| -rw-r--r-- | engines/sword25/fmv/theora_decoder.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/engines/sword25/fmv/theora_decoder.h b/engines/sword25/fmv/theora_decoder.h new file mode 100644 index 0000000000..12d8035c0a --- /dev/null +++ b/engines/sword25/fmv/theora_decoder.h @@ -0,0 +1,152 @@ +/* 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 2 + * 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + * + */ + +#ifndef SWORD25_THEORADECODER_H +#define SWORD25_THEORADECODER_H + +#include "graphics/video/video_decoder.h" +#include "sound/audiostream.h" +#include "sound/mixer.h" + +#include <theora/theoradec.h> +#include <vorbis/codec.h> + +namespace Common { +class SeekableReadStream; +} + +namespace Sword25 { + +/** + * + * Decoder for Theora videos. + * Video decoder used in engines: + * - sword25 + */ +class TheoraDecoder : public Graphics::FixedRateVideoDecoder { +public: + TheoraDecoder(Audio::Mixer *mixer = 0, Audio::Mixer::SoundType soundType = Audio::Mixer::kMusicSoundType); + virtual ~TheoraDecoder(); + + /** + * Load a video file + * @param stream the stream to load + */ + bool load(Common::SeekableReadStream *stream); + void close(); + void reset(); + + /** + * Decode the next frame and return the frame's surface + * @note the return surface should *not* be freed + * @note this may return 0, in which case the last frame should be kept on screen + */ + Graphics::Surface *decodeNextFrame(); + + bool isVideoLoaded() const { + return _fileStream != 0; + } + bool isPaused() const { + return (VideoDecoder::isPaused() || !isVideoLoaded()); + } + + uint16 getWidth() const { + return _surface->w; + } + uint16 getHeight() const { + return _surface->h; + } + uint32 getFrameCount() const { + // It is not possible to get frame count easily + // I.e. seeking is required + assert(0); + return 0; + } + Graphics::PixelFormat getPixelFormat() const { + return Graphics::PixelFormat(4, 8, 8, 8, 8, 16, 8, 0, 24); + } + + uint32 getElapsedTime() const; + + bool endOfVideo() const; + +protected: + Common::Rational getFrameRate() const { + return _frameRate; + } + +private: + void queuePage(ogg_page *page); + int bufferData(); + Audio::QueuingAudioStream *createAudioStream(); + +private: + Common::SeekableReadStream *_fileStream; + Graphics::Surface *_surface; + Common::Rational _frameRate; + uint32 _frameCount; + + Audio::Mixer *_mixer; + Audio::Mixer::SoundType _soundType; + Audio::SoundHandle *_audHandle; + Audio::QueuingAudioStream *_audStream; + + ogg_sync_state _oggSync; + ogg_page _oggPage; + ogg_packet _oggPacket; + ogg_stream_state _vorbisOut; + ogg_stream_state _theoraOut; + th_info _theoraInfo; + th_comment _theoraComment; + th_dec_ctx *_theoraDecode; + th_setup_info *_theoraSetup; + vorbis_info _vorbisInfo; + vorbis_dsp_state _vorbisDSP; + vorbis_block _vorbisBlock; + vorbis_comment _vorbisComment; + + int _theoraPacket; + int _vorbisPacket; + bool _stateFlag; + + int _ppLevelMax; + int _ppLevel; + int _ppInc; + + // single frame video buffering + bool _videobufReady; + ogg_int64_t _videobufGranulePos; + double _videobufTime; + + // single audio fragment audio buffering + int _audiobufFill; + bool _audiobufReady; + ogg_int16_t *_audiobuf; + ogg_int64_t _audiobufGranulePos; // time position of last sample +}; + +} // End of namespace Sword25 + +#endif |