aud_stream.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 BLADERUNNER_AUD_STREAM_H
#define BLADERUNNER_AUD_STREAM_H

#include "bladerunner/adpcm_decoder.h"

#include "audio/audiostream.h"
#include "common/endian.h"
#include "common/types.h"

namespace BladeRunner {

class AudioCache;

class AudStream : public Audio::RewindableAudioStream {
    byte       *_data;
    byte       *_p;
    byte       *_end;
    AudioCache *_cache;
    int32       _hash;
    uint16      _deafBlockRemain;
    uint16      _frequency;
    uint32      _size;
    uint32      _sizeDecompressed;
    byte        _flags;
    byte        _compressionType;
    int         _overrideFrequency;

    ADPCMWestwoodDecoder _decoder;

    void init(byte *data);

public:
    AudStream(byte *data, int overrideFrequency = -1);
    AudStream(AudioCache *cache, int32 hash, int overrideFrequency = -1);
    ~AudStream() override;

    int readBuffer(int16 *buffer, const int numSamples) override;
    bool isStereo() const override { return false; }
    int getRate() const override { return _overrideFrequency > 0 ? _overrideFrequency : _frequency; };
    bool endOfData() const override { return _p == _end; }
    bool rewind() override;
    uint32 getLength() const;
    bool startAtSecond(uint32 startSecond);
    int getBytesPerSecond() const;
};

} // End of namespace BladeRunner

#endif