mirror of https://github.com/PCSX2/pcsx2.git
191 lines
4.8 KiB
C
191 lines
4.8 KiB
C
/***************************************************************************
|
|
oss.c - description
|
|
-------------------
|
|
begin : Wed May 15 2002
|
|
copyright : (C) 2002 by Pete Bernert
|
|
email : BlackDove@addcom.de
|
|
***************************************************************************/
|
|
|
|
/***************************************************************************
|
|
* *
|
|
* 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 2 of the License, or *
|
|
* (at your option) any later version. See also the license.txt file for *
|
|
* additional informations. *
|
|
* *
|
|
***************************************************************************/
|
|
|
|
//*************************************************************************//
|
|
// History of changes:
|
|
//
|
|
// 2005/08/29 - Pete
|
|
// - changed to 48Khz output
|
|
//
|
|
// 2003/03/01 - linuzappz
|
|
// - added checkings for oss_audio_fd == -1
|
|
//
|
|
// 2003/02/08 - linuzappz
|
|
// - added iDisStereo stuff
|
|
//
|
|
// 2002/05/15 - Pete
|
|
// - generic cleanup for the Peops release
|
|
//
|
|
//*************************************************************************//
|
|
|
|
#include "stdafx.h"
|
|
|
|
#define _IN_OSS
|
|
|
|
#include "externals.h"
|
|
|
|
#ifndef _WIN32
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
// small linux time helper... only used for watchdog
|
|
////////////////////////////////////////////////////////////////////////
|
|
#include <sys/timeb.h>
|
|
|
|
extern unsigned int timeGetTime()
|
|
{
|
|
struct timeb t;
|
|
ftime(&t);
|
|
return (unsigned int)(t.time*1000+t.millitm);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
// oss globals
|
|
////////////////////////////////////////////////////////////////////////
|
|
|
|
#define OSS_MEM_DEF
|
|
#include "oss.h"
|
|
static int oss_audio_fd = -1;
|
|
extern int errno;
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
// SETUP SOUND
|
|
////////////////////////////////////////////////////////////////////////
|
|
|
|
void SetupSound(void)
|
|
{
|
|
int pspeed=48000;
|
|
int pstereo;
|
|
int format;
|
|
int fragsize = 0;
|
|
int myfrag;
|
|
int oss_speed, oss_stereo;
|
|
|
|
if(iDisStereo) pstereo=OSS_MODE_MONO;
|
|
else pstereo=OSS_MODE_STEREO;
|
|
|
|
oss_speed = pspeed;
|
|
oss_stereo = pstereo;
|
|
|
|
if((oss_audio_fd=open("/dev/dsp",O_WRONLY,0))==-1)
|
|
{
|
|
printf("Sound device not available!\n");
|
|
return;
|
|
}
|
|
|
|
if(ioctl(oss_audio_fd,SNDCTL_DSP_RESET,0)==-1)
|
|
{
|
|
printf("Sound reset failed\n");
|
|
return;
|
|
}
|
|
|
|
// we use 64 fragments with 1024 bytes each
|
|
|
|
fragsize=10;
|
|
myfrag=(63<<16)|fragsize;
|
|
|
|
if(ioctl(oss_audio_fd,SNDCTL_DSP_SETFRAGMENT,&myfrag)==-1)
|
|
{
|
|
printf("Sound set fragment failed!\n");
|
|
return;
|
|
}
|
|
|
|
format = AFMT_S16_LE;
|
|
|
|
if(ioctl(oss_audio_fd,SNDCTL_DSP_SETFMT,&format) == -1)
|
|
{
|
|
printf("Sound format not supported!\n");
|
|
return;
|
|
}
|
|
|
|
if(format!=AFMT_S16_LE)
|
|
{
|
|
printf("Sound format not supported!\n");
|
|
return;
|
|
}
|
|
|
|
if(ioctl(oss_audio_fd,SNDCTL_DSP_STEREO,&oss_stereo)==-1)
|
|
{
|
|
printf("Stereo mode not supported!\n");
|
|
return;
|
|
}
|
|
|
|
if(oss_stereo!=1)
|
|
{
|
|
iDisStereo=1;
|
|
}
|
|
|
|
if(ioctl(oss_audio_fd,SNDCTL_DSP_SPEED,&oss_speed)==-1)
|
|
{
|
|
printf("Sound frequency not supported\n");
|
|
return;
|
|
}
|
|
|
|
if(oss_speed!=pspeed)
|
|
{
|
|
printf("Sound frequency not supported\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
// REMOVE SOUND
|
|
////////////////////////////////////////////////////////////////////////
|
|
|
|
void RemoveSound(void)
|
|
{
|
|
if(oss_audio_fd != -1 )
|
|
{
|
|
close(oss_audio_fd);
|
|
oss_audio_fd = -1;
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
// GET BYTES BUFFERED
|
|
////////////////////////////////////////////////////////////////////////
|
|
|
|
unsigned long SoundGetBytesBuffered(void)
|
|
{
|
|
audio_buf_info info;
|
|
unsigned long l;
|
|
|
|
if(oss_audio_fd == -1) return SOUNDSIZE;
|
|
if(ioctl(oss_audio_fd,SNDCTL_DSP_GETOSPACE,&info)==-1)
|
|
l=0;
|
|
else
|
|
{
|
|
if(info.fragments<(info.fragstotal>>1)) // can we write in at least the half of fragments?
|
|
l=SOUNDSIZE; // -> no? wait
|
|
else l=0; // -> else go on
|
|
}
|
|
|
|
return l;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
// FEED SOUND DATA
|
|
////////////////////////////////////////////////////////////////////////
|
|
|
|
void SoundFeedVoiceData(unsigned char* pSound,long lBytes)
|
|
{
|
|
if(oss_audio_fd == -1) return;
|
|
write(oss_audio_fd,pSound,lBytes);
|
|
}
|
|
|
|
#endif
|