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bring this over from nuq (kept forgetting to). gives things like -sndspeed

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This commit is contained in:
Bill Currie 2000-10-05 19:16:27 +00:00
parent bd22c816d2
commit 69e5e41e02
1 changed files with 28 additions and 7 deletions
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35
source/snd_alsa_0_5.c
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@ -114,7 +114,7 @@ qboolean SNDDMA_Init(void)
{
int rc=0,i;
char *err_msg="";
int rate,format,bps,stereo,frag_size;
int rate=-1,format=-1,bps,stereo=-1,frag_size;
unsigned int mask;
mask = snd_cards_mask();
@ -128,6 +128,27 @@ qboolean SNDDMA_Init(void)
if ((i=COM_CheckParm("-snddev"))!=0) {
dev=atoi(com_argv[i+1]);
}
if ((i=COM_CheckParm("-sndbits")) != 0) {
i = atoi(com_argv[i+1]);
if (i==16) {
format = SND_PCM_SFMT_S16_LE;
} else if (i==8) {
format = SND_PCM_SFMT_U8;
} else {
Con_Printf("Error: invalid sample bits: %d\n", i);
return 0;
}
}
if ((i=COM_CheckParm("-sndspeed")) != 0) {
rate = atoi(com_argv[i+1]);
if (rate!=44100 && rate!=22050 && rate!=11025) {
Con_Printf("Error: invalid sample rate: %d\n", rate);
return 0;
}
}
if ((i=COM_CheckParm("-sndmono")) != 0) {
stereo=0;
}
if (card==-1) {
for (card=0; card<SND_CARDS; card++) {
if (!(mask & (1<<card)))
@ -164,31 +185,31 @@ qboolean SNDDMA_Init(void)
cinfo.channel = SND_PCM_CHANNEL_PLAYBACK;
snd_pcm_channel_info(pcm_handle, &cinfo);
Con_Printf("%08x %08x %08x\n",cinfo.flags,cinfo.formats,cinfo.rates);
if (cinfo.rates & SND_PCM_RATE_44100) {
if ((rate==-1 || rate==44100) && cinfo.rates & SND_PCM_RATE_44100) {
rate=44100;
frag_size=512; /* assuming stereo 8 bit */
} else if (cinfo.rates & SND_PCM_RATE_22050) {
} else if ((rate==-1 || rate==22050) && cinfo.rates & SND_PCM_RATE_22050) {
rate=22050;
frag_size=256; /* assuming stereo 8 bit */
} else if (cinfo.rates & SND_PCM_RATE_11025) {
} else if ((rate==-1 || rate==11025) && cinfo.rates & SND_PCM_RATE_11025) {
rate=11025;
frag_size=128; /* assuming stereo 8 bit */
} else {
Con_Printf("ALSA: desired rates not supported\n");
goto error_2;
}
if (cinfo.formats & SND_PCM_FMT_S16_LE) {
if ((format==-1 || format==SND_PCM_SFMT_S16_LE) && cinfo.formats & SND_PCM_FMT_S16_LE) {
format=SND_PCM_SFMT_S16_LE;
bps=16;
frag_size*=2;
} else if (cinfo.formats & SND_PCM_FMT_U8) {
} else if ((format==-1 || format==SND_PCM_SFMT_U8) && cinfo.formats & SND_PCM_FMT_U8) {
format=SND_PCM_SFMT_U8;
bps=8;
} else {
Con_Printf("ALSA: desired formats not supported\n");
goto error_2;
}
if (cinfo.max_voices>=2) {
if (stereo && cinfo.max_voices>=2) {
stereo=1;
} else {
stereo=0;