static void
DCAUD_PlayDevice(_THIS)
{
SDL_AudioSpec *spec = &this->spec;
unsigned int offset;
if (this->hidden->playing) {
/* wait */
while (aica_get_pos(0) / spec->samples == this->hidden->nextbuf) {
thd_pass();
}
}
offset = this->hidden->nextbuf * spec->size;
this->hidden->nextbuf ^= 1;
/* Write the audio data, checking for EAGAIN on broken audio drivers */
if (spec->channels == 1) {
spu_memload(this->hidden->leftpos + offset, this->hidden->mixbuf,
this->hidden->mixlen);
} else {
offset /= 2;
if ((this->spec.format & 255) == 8) {
spu_memload_stereo8(this->hidden->leftpos + offset,
this->hidden->rightpos + offset,
this->hidden->mixbuf, this->hidden->mixlen);
} else {
spu_memload_stereo16(this->hidden->leftpos + offset,
this->hidden->rightpos + offset,
this->hidden->mixbuf, this->hidden->mixlen);
}
}
if (!this->hidden->playing) {
int mode;
this->hidden->playing = 1;
mode = (spec->format == AUDIO_S8) ? SM_8BIT : SM_16BIT;
if (spec->channels == 1) {
aica_play(0, mode, this->hidden->leftpos, 0,
spec->samples * 2, spec->freq, 255, 128, 1);
} else {
aica_play(0, mode, this->hidden->leftpos, 0,
spec->samples * 2, spec->freq, 255, 0, 1);
aica_play(1, mode, this->hidden->rightpos, 0,
spec->samples * 2, spec->freq, 255, 255, 1);
}
}
}
static void audio_write(AVCodecContext *audio, void *buf, size_t size) {
if(!aud->channels) {
return;
}
int nsamples = size/(aud->channels*aud->bytes);
int writepos = 0;
int curpos =0;
if (!aud->playing) {
aud->sampsize = (65535)/nsamples*nsamples;
//printf("audio size=%d n=%d sampsize=%d\n",size,nsamples,aud->sampsize);
aud->leftbuf = 0x11000;//AICA_RAM_START;//
aud->rightbuf = 0x11000/*AICA_RAM_START*/ + aud->sampsize*aud->bytes;
aud->writepos = 0;
} else {
//curpos = aica_get_pos(0);
//if (writepos < curpos && curpos < writepos+nsamples) {
//printf("audio:wait");
//}
/*
while(aud->writepos < curpos && curpos < aud->writepos + nsamples) {
curpos = aica_get_pos(0);
//timer_spin_sleep(50);
//thd_sleep(50);
//thd_pass();
thd_sleep(10);
//timer_spin_sleep(2);
}
*/
writepos = aud->writepos;
curpos = aica_get_pos(0);
do {
curpos = aica_get_pos(0);
} while(writepos < curpos && curpos < writepos + nsamples);
//audio_end();
}
writepos = aud->writepos * aud->bytes;
if (aud->channels == 1) {
spu_memload(aud->leftbuf + writepos, buf, size);
//spu_memload_mono16(aud->leftbuf + writepos, buf, size);
} else {
spu_memload_stereo16(aud->leftbuf + writepos, aud->rightbuf + writepos, buf, size);
}
aud->writepos += nsamples;
if (aud->writepos >= aud->sampsize) {
aud->writepos = 0;
}
if (!aud->playing) {
int mode;
int vol = 255;
aud->playing = 1;
mode = (aud->bits == 16) ? SM_16BIT : SM_8BIT;
if (aud->channels == 1) {
aica_play(0,mode,aud->leftbuf,0,aud->sampsize,aud->rate,vol,128,1);
} else {
// printf("%d %d\n",aud->sampsize,aud->rate);
aica_play(0,mode,aud->leftbuf ,0,aud->sampsize,aud->rate,vol, 0,1);
aica_play(1,mode,aud->rightbuf,0,aud->sampsize,aud->rate,vol,255,1);
}
}
}