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153 lines
4.3 KiB
C++
153 lines
4.3 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
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef ACCESS_VIDEO_MOVIE_DECODER_H
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#define ACCESS_VIDEO_MOVIE_DECODER_H
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#include "video/video_decoder.h"
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#include "audio/audiostream.h"
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namespace Common {
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class SeekableReadStream;
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}
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namespace Image {
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class Codec;
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}
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namespace Access {
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enum kDebugLevels {
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kVIDMovieChunkId_FullFrame = 0x00,
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kVIDMovieChunkId_FullFrameCompressed = 0x01,
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kVIDMovieChunkId_Palette = 0x02,
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kVIDMovieChunkId_FullFrameCompressedFill = 0x03,
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kVIDMovieChunkId_PartialFrameCompressed = 0x04,
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kVIDMovieChunkId_EndOfFile = 0x14,
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kVIDMovieChunkId_AudioFirstChunk = 0x7C,
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kVIDMovieChunkId_Audio = 0x7D
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};
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// This video format is used in at least the following Access engine games:
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// - Noctropolis
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// - Synnergist
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class AccessVIDMovieDecoder : public Video::VideoDecoder {
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public:
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AccessVIDMovieDecoder();
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~AccessVIDMovieDecoder();
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bool loadStream(Common::SeekableReadStream *stream);
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void close();
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protected:
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void readNextPacket();
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private:
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bool streamSkipFullFrameCompressedFill();
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private:
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int32 _streamSeekOffset; /* current stream offset, pointing to not-yet-indexed stream position */
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uint32 _streamVideoIndex; /* current stream index for video decoding */
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uint32 _streamAudioIndex; /* current stream index for audio decoding */
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struct IndexCacheEntry {
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byte chunkId;
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int32 offset;
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};
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Common::Array<IndexCacheEntry> _indexCacheTable;
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private:
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class StreamVideoTrack : public VideoTrack {
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public:
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StreamVideoTrack(uint32 width, uint32 height, uint16 regularFrameDelay);
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~StreamVideoTrack();
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bool endOfTrack() const;
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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;
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int getCurFrame() const { return _curFrame; }
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void setNextFrameStartTime(uint32 nextFrameStartTime) { _nextFrameStartTime = nextFrameStartTime; }
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uint32 getNextFrameStartTime() const { return _nextFrameStartTime; }
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const Graphics::Surface *decodeNextFrame() { return _surface; }
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const byte *getPalette() const;
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bool hasDirtyPalette() const;
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void decodePalette(Common::SeekableReadStream *stream);
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void decodeFrame(Common::SeekableReadStream *stream, byte chunkId);
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bool skipOverFrame(Common::SeekableReadStream *stream, byte chunkId);
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bool skipOverPalette(Common::SeekableReadStream *stream);
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void setEndOfTrack() { _endOfTrack = true; }
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private:
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Graphics::Surface *_surface;
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int _curFrame;
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uint32 _nextFrameStartTime;
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byte _palette[3 * 256];
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mutable bool _dirtyPalette;
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uint16 _width, _height;
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uint16 _regularFrameDelay; // delay between frames (1 = 1/60 of a second)
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bool _endOfTrack;
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};
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class StreamAudioTrack : public AudioTrack {
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public:
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StreamAudioTrack(uint32 sampleRate, Audio::Mixer::SoundType soundType);
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~StreamAudioTrack();
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void queueAudio(Common::SeekableReadStream *stream, byte chunkId);
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bool skipOverAudio(Common::SeekableReadStream *stream, byte chunkId);
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protected:
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Audio::AudioStream *getAudioStream() const;
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private:
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Audio::QueuingAudioStream *_audioStream;
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uint32 _totalAudioQueued; /* total amount of milliseconds of audio, that we queued up already */
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public:
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uint32 getTotalAudioQueued() const { return _totalAudioQueued; }
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private:
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int16 decodeSample(uint8 dataNibble);
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uint16 _sampleRate;
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bool _stereo;
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};
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Common::SeekableReadStream *_stream;
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StreamVideoTrack *_videoTrack;
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StreamAudioTrack *_audioTrack;
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};
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} // End of namespace Access
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#endif
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