void AudioDriverPulseAudio::thread_func(void* p_udata) {
print_line("thread");
AudioDriverPulseAudio* ad = (AudioDriverPulseAudio*)p_udata;
while (!ad->exit_thread) {
if (!ad->active) {
for (unsigned int i=0; i < ad->buffer_size * ad->channels; i++) {
ad->samples_out[i] = 0;
}
} else {
ad->lock();
ad->audio_server_process(ad->buffer_size, ad->samples_in);
ad->unlock();
for (unsigned int i=0; i < ad->buffer_size * ad->channels;i ++) {
ad->samples_out[i] = ad->samples_in[i] >> 16;
}
}
// pa_simple_write always consumes the entire buffer
int error_code;
int byte_size = ad->buffer_size * sizeof(int16_t) * ad->channels;
if (pa_simple_write(ad->pulse, ad->samples_out, byte_size, &error_code) < 0) {
// can't recover here
fprintf(stderr, "PulseAudio failed and can't recover: %s\n", pa_strerror(error_code));
ad->active = false;
ad->exit_thread = true;
break;
}
}
ad->thread_exited = true;
}
void AudioDriverPulseAudio::thread_func(void *p_udata) {
AudioDriverPulseAudio *ad = (AudioDriverPulseAudio *)p_udata;
unsigned int write_ofs = 0;
size_t avail_bytes = 0;
while (!ad->exit_thread) {
size_t read_bytes = 0;
size_t written_bytes = 0;
if (avail_bytes == 0) {
ad->lock();
ad->start_counting_ticks();
if (!ad->active) {
for (unsigned int i = 0; i < ad->pa_buffer_size; i++) {
ad->samples_out.write[i] = 0;
}
} else {
ad->audio_server_process(ad->buffer_frames, ad->samples_in.ptrw());
if (ad->channels == ad->pa_map.channels) {
for (unsigned int i = 0; i < ad->pa_buffer_size; i++) {
ad->samples_out.write[i] = ad->samples_in[i] >> 16;
}
} else {
// Uneven amount of channels
unsigned int in_idx = 0;
unsigned int out_idx = 0;
for (unsigned int i = 0; i < ad->buffer_frames; i++) {
for (int j = 0; j < ad->pa_map.channels - 1; j++) {
ad->samples_out.write[out_idx++] = ad->samples_in[in_idx++] >> 16;
}
uint32_t l = ad->samples_in[in_idx++] >> 16;
uint32_t r = ad->samples_in[in_idx++] >> 16;
ad->samples_out.write[out_idx++] = (l + r) / 2;
}
}
}
avail_bytes = ad->pa_buffer_size * sizeof(int16_t);
write_ofs = 0;
ad->stop_counting_ticks();
ad->unlock();
}
