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Diffstat (limited to 'engines/cryomni3d/video/hnm_decoder.h')
-rw-r--r-- | engines/cryomni3d/video/hnm_decoder.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/engines/cryomni3d/video/hnm_decoder.h b/engines/cryomni3d/video/hnm_decoder.h new file mode 100644 index 0000000000..681dd87e4b --- /dev/null +++ b/engines/cryomni3d/video/hnm_decoder.h @@ -0,0 +1,129 @@ +/* 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. + * + */ + +#ifndef CRYOMNI3D_VIDEO_HNM_DECODER_H +#define CRYOMNI3D_VIDEO_HNM_DECODER_H + +#include "common/rational.h" +#include "graphics/pixelformat.h" +#include "video/video_decoder.h" +#include "graphics/surface.h" +#include "audio/audiostream.h" + +namespace Common { +class SeekableReadStream; +} + +namespace Video { + +/** + * Decoder for HNM videos. + * + * Video decoder used in engines: + * - cryomni3d + */ +class HNMDecoder : public VideoDecoder { +public: + HNMDecoder(bool loop = false); + virtual ~HNMDecoder(); + bool loadStream(Common::SeekableReadStream *stream); + void readNextPacket(); + void close(); + + void setRegularFrameDelay(uint32 regularFrameDelay) { _regularFrameDelay = regularFrameDelay; } + +private: + class HNM4VideoTrack : public VideoTrack { + public: + HNM4VideoTrack(uint32 width, uint32 height, uint32 frameSize, uint32 frameCount, + uint32 regularFrameDelay); + ~HNM4VideoTrack(); + + // When _frameCount is 0, it means we are looping + bool endOfTrack() const { return (_frameCount == 0) ? false : VideoTrack::endOfTrack(); } + uint16 getWidth() const { return _surface.w; } + uint16 getHeight() const { return _surface.h; } + Graphics::PixelFormat getPixelFormat() const { return _surface.format; } + int getCurFrame() const { return _curFrame; } + int getFrameCount() const { return _frameCount; } + uint32 getNextFrameStartTime() const { return _nextFrameStartTime; } + const Graphics::Surface *decodeNextFrame() { return &_surface; } + const byte *getPalette() const { _dirtyPalette = false; return _palette; } + bool hasDirtyPalette() const { return _dirtyPalette; } + + /** Decode a video chunk. */ + void decodePalette(Common::SeekableReadStream *stream, uint32 size); + void decodeInterframe(Common::SeekableReadStream *stream, uint32 size); + void decodeIntraframe(Common::SeekableReadStream *stream, uint32 size); + + void restart() { _nextFrameDelay = -1; _nextNextFrameDelay = -1; } + void setFrameDelay(uint32 frameDelay); + + private: + Graphics::Surface _surface; + + uint32 _regularFrameDelay; + uint32 _nextFrameDelay; + uint32 _nextNextFrameDelay; + uint32 _nextFrameStartTime; + + uint32 _frameCount; + int _curFrame; + + byte _palette[256 * 3]; + mutable bool _dirtyPalette; + + byte *_frameBufferC; + byte *_frameBufferP; + }; + + class DPCMAudioTrack : public AudioTrack { + public: + DPCMAudioTrack(uint16 channels, uint16 bits, unsigned int sampleRate, + Audio::Mixer::SoundType soundType); + ~DPCMAudioTrack(); + + Audio::Timestamp decodeSound(Common::SeekableReadStream *stream, uint32 size); + protected: + Audio::AudioStream *getAudioStream() const { return _audioStream; } + private: + uint16 _channels; + uint16 _bits; + Audio::QueuingAudioStream *_audioStream; + bool _gotLUT; + uint16 _lut[256]; + uint16 _lastSample; + }; + + bool _loop; + + uint32 _regularFrameDelay; + // These two pointer are owned by VideoDecoder + HNM4VideoTrack *_videoTrack; + DPCMAudioTrack *_audioTrack; + + Common::SeekableReadStream *_stream; +}; + +} // End of namespace Video + +#endif |