static int cap_fit(mpg123_handle *fr, struct audioformat *nf, int f0, int f2)
{
int i;
int c = nf->channels-1;
int rn = rate2num(&fr->p, nf->rate);
if(rn >= 0) for(i=f0;i<f2;i++)
{
if(fr->p.audio_caps[c][rn][i])
{
nf->encoding = my_encodings[i];
return 1;
}
}
return 0;
}
/*
* c=num of channels of stream
* r=rate of stream
* return 0 on error
*/
int audio_fit_capabilities(struct audio_info_struct *ai,int c,int r)
{
int rn;
int f0=0;
if(param.force_8bit) f0 = 2; /* skip the 16bit encodings */
c--; /* stereo=1 ,mono=0 */
/* force stereo is stronger */
if(param.force_mono) c = 0;
if(param.force_stereo) c = 1;
if(param.force_rate) {
rn = rate2num(param.force_rate);
/* 16bit encodings */
if(audio_fit_cap_helper(ai,rn,f0,2,c)) return 1;
/* 8bit encodings */
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c)) return 1;
/* try again with different stereoness */
if(c == 1 && !param.force_stereo) c = 0;
else if(c == 0 && !param.force_mono) c = 1;
/* 16bit encodings */
if(audio_fit_cap_helper(ai,rn,f0,2,c)) return 1;
/* 8bit encodings */
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c)) return 1;
error3("Unable to set up output device! Constraints: %s%s%liHz.",
(param.force_stereo ? "stereo, " :
(param.force_mono ? "mono, " : "")),
(param.force_8bit ? "8bit, " : ""),
param.force_rate);
if(param.verbose <= 1) print_capabilities(ai);
return 0;
}
/* try different rates with 16bit */
rn = rate2num(r>>0);
if(audio_fit_cap_helper(ai,rn,f0,2,c))
return 1;
rn = rate2num(r>>1);
if(audio_fit_cap_helper(ai,rn,f0,2,c))
return 1;
rn = rate2num(r>>2);
if(audio_fit_cap_helper(ai,rn,f0,2,c))
return 1;
/* try different rates with 8bit */
rn = rate2num(r>>0);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
return 1;
rn = rate2num(r>>1);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
return 1;
rn = rate2num(r>>2);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
return 1;
/* try again with different stereoness */
if(c == 1 && !param.force_stereo) c = 0;
else if(c == 0 && !param.force_mono) c = 1;
/* 16bit */
rn = rate2num(r>>0);
if(audio_fit_cap_helper(ai,rn,f0,2,c)) return 1;
rn = rate2num(r>>1);
if(audio_fit_cap_helper(ai,rn,f0,2,c)) return 1;
rn = rate2num(r>>2);
if(audio_fit_cap_helper(ai,rn,f0,2,c)) return 1;
/* 8bit */
rn = rate2num(r>>0);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c)) return 1;
rn = rate2num(r>>1);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c)) return 1;
rn = rate2num(r>>2);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c)) return 1;
error5("Unable to set up output device! Constraints: %s%s%i, %i or %iHz.",
(param.force_stereo ? "stereo, " :
(param.force_mono ? "mono, " : "")),
(param.force_8bit ? "8bit, " : ""),
r, r>>1, r>>2);
if(param.verbose <= 1) print_capabilities(ai);
return 0;
}
/*
* c=num of channels of stream
* r=rate of stream
*/
void audio_fit_capabilities(struct audio_info_struct *ai,int c,int r)
{
int rn;
int f0=0;
int save_channels = c;
int save_rate = r;
if(param.force_8bit) {
f0 = 2;
}
c--; /* stereo=1 ,mono=0 */
if(param.force_mono >= 0)
c = 0;
if(param.force_stereo)
c = 1;
if(param.force_rate) {
rn = rate2num(param.force_rate);
if(audio_fit_cap_helper(ai,rn,f0,2,c))
return;
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
return;
if(c == 1 && !param.force_stereo)
c = 0;
else if(c == 0 && !param.force_mono)
c = 1;
if(audio_fit_cap_helper(ai,rn,f0,2,c))
return;
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
return;
}
else {
rn = rate2num(r>>0);
if(audio_fit_cap_helper(ai,rn,f0,2,c))
return;
rn = rate2num(r<<1);
if(audio_fit_cap_helper(ai,rn,f0,2,c))
return;
rn = rate2num(r<<2);
if(audio_fit_cap_helper(ai,rn,f0,2,c))
return;
rn = rate2num(r>>1);
if(audio_fit_cap_helper(ai,rn,f0,2,c))
return;
rn = rate2num(r>>2);
if(audio_fit_cap_helper(ai,rn,f0,2,c))
return;
rn = rate2num(r>>0);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
return;
rn = rate2num(r<<1);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
return;
rn = rate2num(r<<2);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
return;
rn = rate2num(r>>1);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
return;
rn = rate2num(r>>2);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
return;
if(c == 1 && !param.force_stereo)
c = 0;
else if(c == 0 && !param.force_mono)
c = 1;
rn = rate2num(r>>0);
if(audio_fit_cap_helper(ai,rn,f0,2,c))
return;
rn = rate2num(r<<1);
if(audio_fit_cap_helper(ai,rn,f0,2,c))
return;
rn = rate2num(r<<2);
if(audio_fit_cap_helper(ai,rn,f0,2,c))
return;
rn = rate2num(r>>1);
if(audio_fit_cap_helper(ai,rn,f0,2,c))
return;
rn = rate2num(r>>2);
if(audio_fit_cap_helper(ai,rn,f0,2,c))
return;
rn = rate2num(r>>0);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
return;
rn = rate2num(r<<1);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
return;
rn = rate2num(r<<2);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
return;
rn = rate2num(r>>1);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
return;
rn = rate2num(r>>2);
if(audio_fit_cap_helper(ai,rn,2,NUM_ENCODINGS,c))
return;
}
fprintf(stderr,"\nAudiodevice: No supported audio rate found for %d Hz and %d channels !\n",save_rate,save_channels);
fprintf(stderr,"Use '-vv' to list all possible audio rates and\n");
fprintf(stderr,"choose a supported rate with the '-r <rate>' option.\n");
exit(1);
}
