63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
/* 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_H
|
|
#define NUVIE_SOUND_MIXER_DECODER_PC_SPEAKER_H
|
|
|
|
#include "ultima/nuvie/files/nuvie_io_file.h"
|
|
|
|
namespace Ultima {
|
|
namespace Nuvie {
|
|
|
|
#define SPKR_OUTPUT_RATE 22050 //11025 //FIXME may need to fiddle with this.
|
|
|
|
class PCSpeaker {
|
|
private:
|
|
uint32 rate;
|
|
uint16 frequency;
|
|
float half_period;
|
|
float cur_vol;
|
|
float want_vol;
|
|
float time_left;
|
|
|
|
uint32 osc_length;
|
|
uint32 osc_samples;
|
|
|
|
private:
|
|
|
|
NuvieIOFileWrite dataFile;
|
|
uint32 wav_length;
|
|
|
|
public:
|
|
PCSpeaker(uint32 mixer_rate);
|
|
~PCSpeaker() { }
|
|
void SetOn();
|
|
void SetOff();
|
|
void SetFrequency(uint16 freq, float offset = 0.0f);
|
|
|
|
void PCSPEAKER_CallBack(sint16 *stream, const uint32 len);
|
|
};
|
|
|
|
} // End of namespace Nuvie
|
|
} // End of namespace Ultima
|
|
|
|
#endif
|