mirror of https://github.com/PCSX2/pcsx2.git
125 lines
2.7 KiB
C++
125 lines
2.7 KiB
C++
/* ZeroSPU2
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* Copyright (C) 2006-2010 zerofrog
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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// Modified by arcum42@gmail.com
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#include "Linux.h"
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#include "OSS.h"
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static int oss_audio_fd = -1;
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extern int errno;
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// use OSS for sound
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int OSSSetupSound()
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{
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int pspeed = SAMPLE_RATE;
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int pstereo;
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int format;
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int fragsize = 0;
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int myfrag;
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int oss_speed, oss_stereo;
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int err;
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pstereo=OSS_MODE_STEREO;
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oss_speed = pspeed;
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oss_stereo = pstereo;
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oss_audio_fd=open("/dev/dsp",O_WRONLY,0);
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if (oss_audio_fd == -1)
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{
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ERROR_LOG("Sound device not available!\n");
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return -1;
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}
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err= ioctl(oss_audio_fd,SNDCTL_DSP_RESET,0);
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if (err == -1)
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{
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ERROR_LOG("Sound reset failed\n");
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return -1;
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}
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// we use 64 fragments with 1024 bytes each
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fragsize = 10;
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myfrag = (63 << 16) | fragsize;
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err = ioctl(oss_audio_fd,SNDCTL_DSP_SETFRAGMENT,&myfrag);
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if (err == -1)
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{
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ERROR_LOG("Sound set fragment failed!\n");
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return -1;
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}
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format = AFMT_S16_LE;
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err = ioctl(oss_audio_fd,SNDCTL_DSP_SETFMT,&format);
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if ((err == -1) || (format!=AFMT_S16_LE))
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{
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ERROR_LOG("Sound format not supported!\n");
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return -1;
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}
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err = ioctl(oss_audio_fd,SNDCTL_DSP_STEREO,&oss_stereo);
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if (err == -1)
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{
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ERROR_LOG("Stereo mode not supported!\n");
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return -1;
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}
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err = ioctl(oss_audio_fd,SNDCTL_DSP_SPEED,&oss_speed);
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if ((err == -1) || (oss_speed!=pspeed))
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{
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ERROR_LOG("Sound frequency not supported\n");
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return -1;
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}
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return 0;
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}
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// REMOVE SOUND
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void OSSRemoveSound()
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{
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if(oss_audio_fd != -1 ) {
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close(oss_audio_fd);
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oss_audio_fd = -1;
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}
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}
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int OSSSoundGetBytesBuffered()
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{
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audio_buf_info info;
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unsigned long l;
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if(oss_audio_fd == -1)
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return SOUNDSIZE;
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if(ioctl(oss_audio_fd,SNDCTL_DSP_GETOSPACE,&info)==-1)
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return 0;
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else {
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// can we write in at least the half of fragments?
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if(info.fragments<(info.fragstotal>>1))
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return SOUNDSIZE;
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}
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return 0;
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}
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// FEED SOUND DATA
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void OSSSoundFeedVoiceData(unsigned char* pSound,long lBytes)
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{
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if(oss_audio_fd == -1) return;
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write(oss_audio_fd,pSound,lBytes);
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}
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