/* 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 NUVIE_SOUND_MIXER_DECODER_PC_SPEAKER_STREAM_H
#define NUVIE_SOUND_MIXER_DECODER_PC_SPEAKER_STREAM_H

#include "ultima/shared/std/string.h"
#include "ultima/nuvie/sound/decoder/pc_speaker.h"
#include "audio/audiostream.h"

namespace Ultima {
namespace Nuvie {

class PCSpeakerStream : public Audio::RewindableAudioStream {
public:
	PCSpeakerStream() {
		pcspkr = new PCSpeaker(SPKR_OUTPUT_RATE);
		finished = false;
	}

	~PCSpeakerStream() override {
		delete pcspkr;
	}

	/** Is this a stereo stream? */
	bool isStereo() const override {
		return false;
	}

	/** Sample rate of the stream. */
	int getRate() const override {
		return SPKR_OUTPUT_RATE;
	}

	/**
	 * End of data reached? If this returns true, it means that at this
	 * time there is no data available in the stream. However there may be
	 * more data in the future.
	 * This is used by e.g. a rate converter to decide whether to keep on
	 * converting data or stop.
	 */
	bool endOfData() const override {
		return finished;
	}

	bool rewind() override {
		return false;
	}

protected:
	PCSpeaker *pcspkr;
	bool finished;
};


class PCSpeakerFreqStream : public PCSpeakerStream {
public:
	PCSpeakerFreqStream() {

	}

	PCSpeakerFreqStream(uint start, uint16 d);
	~PCSpeakerFreqStream() override;
	uint32 getLengthInMsec();
	int readBuffer(sint16 *buffer, const int numSamples) override;

protected:

	uint32 frequency;
	uint32 duration;
	uint32 total_samples_played;

};

class PCSpeakerSweepFreqStream : public PCSpeakerStream {
public:
	PCSpeakerSweepFreqStream() {

	}

	PCSpeakerSweepFreqStream(uint start, uint end, uint16 d, uint16 s);
	~PCSpeakerSweepFreqStream() override;
	uint32 getLengthInMsec();
	int readBuffer(sint16 *buffer, const int numSamples) override;

protected:

	uint32 start_freq;
	uint32 finish_freq;
	uint32 cur_freq;
	uint16 duration;
	uint16 stepping;

	uint32 freq_step;
	float samples_per_step;
	float sample_pos;
	uint32 total_samples_played;
	uint32 num_steps;
	uint32 cur_step;

};

class PCSpeakerRandomStream : public PCSpeakerStream {
public:
	PCSpeakerRandomStream() {

	}

	PCSpeakerRandomStream(uint start, uint16 d, uint16 s);
	~PCSpeakerRandomStream() override;
	uint32 getLengthInMsec();
	uint16 getNextFreqValue();
	int readBuffer(sint16 *buffer, const int numSamples) override;

protected:

	uint16 base_val;
	uint16 duration;
	uint16 stepping;

	uint32 rand_value;
	uint32 sample_pos;
	uint32 total_samples_played;
	uint32 samples_per_step;
	uint32 num_steps;
	uint32 cur_step;

};

class PCSpeakerStutterStream : public PCSpeakerStream {
public:
	PCSpeakerStutterStream() {

	}

	PCSpeakerStutterStream(sint16 a0, uint16 a2, uint16 a4, uint16 a6, uint16 a8);
	~PCSpeakerStutterStream() override;
	uint32 getLengthInMsec();
	int readBuffer(sint16 *buffer, const int numSamples) override;

protected:

	sint16 arg_0;
	uint16 arg_2;
	uint16 arg_4;
	uint16 arg_6;
	uint16 arg_8;

	uint16 dx;
	uint16 cx;
	float delay;
	float delay_remaining;

};

Audio::AudioStream *makePCSpeakerSlugDissolveSfxStream(uint rate);
Audio::AudioStream *makePCSpeakerGlassSfxStream(uint rate);
Audio::AudioStream *makePCSpeakerMagicCastingP1SfxStream(uint rate, uint8 magic_circle);
Audio::AudioStream *makePCSpeakerMagicCastingP2SfxStream(uint rate, uint8 magic_circle);
Audio::AudioStream *makePCSpeakerAvatarDeathSfxStream(uint rate);
Audio::AudioStream *makePCSpeakerKalLorSfxStream(uint rate);
Audio::AudioStream *makePCSpeakerHailStoneSfxStream(uint rate);
Audio::AudioStream *makePCSpeakerEarthQuakeSfxStream(uint rate);

} // End of namespace Nuvie
} // End of namespace Ultima

#endif