/* 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 GRIM_SCX_H
#define GRIM_SCX_H

namespace Common {
	class SeekableReadStream;
}

namespace Grim {

// I've only ever seen up to two
#define SCX_MAX_CHANNELS 2

class SCXStream : public Audio::RewindableAudioStream {
public:
	SCXStream(Common::SeekableReadStream *stream, const Audio::Timestamp *start, DisposeAfterUse::Flag disposeAfterUse);
	~SCXStream();

	bool isStereo() const override { return _channels == 2; }
	bool endOfData() const override { return _xaStreams[0]->endOfData(); }
	int getRate() const override { return _rate; }
	int readBuffer(int16 *buffer, const int numSamples) override;

	bool rewind() override;
	Audio::Timestamp getPos() const;

private:
	int _channels;
	int _rate;
	uint16 _blockSize;

	Common::SeekableReadStream *_fileStreams[SCX_MAX_CHANNELS];
	Audio::RewindableAudioStream *_xaStreams[SCX_MAX_CHANNELS];
};

/**
 * Takes an input stream containing SCX sound data and creates
 * a RewindableAudioStream from that.
 *
 * @param stream            the SeekableReadStream from which to read the SCX data
 * @param disposeAfterUse   whether to delete the stream after use
 * @return   a new RewindableAudioStream, or NULL, if an error occurred
 */
SCXStream *makeSCXStream(
	Common::SeekableReadStream *stream,
	const Audio::Timestamp *start,
	DisposeAfterUse::Flag disposeAfterUse = DisposeAfterUse::YES);

} // End of namespace Grim

#endif