3do_decoder.h

/* 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */
 
#ifndef SHERLOCK_SCALPEL_3DO_MOVIE_DECODER_H
#define SHERLOCK_SCALPEL_3DO_MOVIE_DECODER_H
 
#include "common/rect.h"
#include "video/video_decoder.h"
#include "audio/decoders/3do.h"
 
namespace Audio {
class QueuingAudioStream;
}
 
namespace Common {
class SeekableReadStream;
}
 
namespace Image {
class Codec;
}
 
namespace Video {
 
class ThreeDOMovieDecoder : public Video::VideoDecoder {
public:
    ThreeDOMovieDecoder();
    ~ThreeDOMovieDecoder() override;
 
    bool loadStream(Common::SeekableReadStream *stream) override;
    void close() override;
 
protected:
    void readNextPacket() override;
    bool supportsAudioTrackSwitching() const override { return true; }
    AudioTrack *getAudioTrack(int index) override;
 
private:
    int32 _streamVideoOffset; /* current stream offset for video decoding */
    int32 _streamAudioOffset; /* current stream offset for audio decoding */
 
private:
    class StreamVideoTrack : public VideoTrack  {
    public:
        StreamVideoTrack(uint32 width, uint32 height, uint32 codecTag, uint32 frameCount);
        ~StreamVideoTrack() override;
 
        bool endOfTrack() const override;
 
        uint16 getWidth() const override { return _width; }
        uint16 getHeight() const override { return _height; }
        Graphics::PixelFormat getPixelFormat() const override;
        bool setOutputPixelFormat(const Graphics::PixelFormat &format) override;
        int getCurFrame() const override { return _curFrame; }
        int getFrameCount() const override { return _frameCount; }
        void setNextFrameStartTime(uint32 nextFrameStartTime) { _nextFrameStartTime = nextFrameStartTime; }
        uint32 getNextFrameStartTime() const override { return _nextFrameStartTime; }
        const Graphics::Surface *decodeNextFrame() override { return _surface; }
 
        void decodeFrame(Common::SeekableReadStream *stream, uint32 videoTimeStamp);
 
    private:
        const Graphics::Surface *_surface;
 
        int _curFrame;
        uint32 _frameCount;
        uint32 _nextFrameStartTime;
 
        Image::Codec *_codec;
        uint16 _width, _height;
    };
 
    class StreamAudioTrack : public AudioTrack {
    public:
        StreamAudioTrack(uint32 codecTag, uint32 sampleRate, uint32 channels, Audio::Mixer::SoundType soundType, uint32 trackId);
        ~StreamAudioTrack() override;
 
        void queueAudio(Common::SeekableReadStream *stream, uint32 size);
 
        bool matchesId(uint trackId);
 
    protected:
        Audio::AudioStream *getAudioStream() const override;
 
    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);
 
        uint32 _codecTag;
        uint16 _sampleRate;
        bool   _stereo;
        uint32 _trackId;
 
        Audio::audio_3DO_ADP4_PersistentSpace _ADP4_PersistentSpace;
        Audio::audio_3DO_SDX2_PersistentSpace _SDX2_PersistentSpace;
    };
 
    Common::SeekableReadStream *_stream;
    StreamVideoTrack *_videoTrack;
    Common::Array<StreamAudioTrack *> _audioTracks;
};
 
} // End of namespace Sherlock
 
#endif