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