pc_speaker_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 NUVIE_SOUND_MIXER_DECODER_PC_SPEAKER_STREAM_H
#define NUVIE_SOUND_MIXER_DECODER_PC_SPEAKER_STREAM_H
 
#include "common/str.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;
    }
 
    bool isStereo() const override {
        return false;
    }
 
    int getRate() const override {
        return SPKR_OUTPUT_RATE;
    }
 
    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