static int pulse_pause(void)
{
trace ("pulse_pause\n");
pulse_free();
state = OUTPUT_STATE_PAUSED;
return 0;
}
static int pulse_stop(void)
{
trace ("pulse_stop\n");
state = OUTPUT_STATE_STOPPED;
deadbeef->streamer_reset(1);
pulse_free();
return 0;
}
size_t wave_write(void* theHandler, char* theMono16BitsWaveBuffer, size_t theSize)
{
ENTER("wave_write");
size_t bytes_to_write = theSize;
char* aBuffer=theMono16BitsWaveBuffer;
assert(stream);
size_t aTotalFreeMem=0;
pthread_mutex_lock(&pulse_mutex);
while (1)
{
if (my_callback_is_output_enabled
&& (0==my_callback_is_output_enabled()))
{
SHOW_TIME("wave_write > my_callback_is_output_enabled: no!");
theSize=0;
goto terminate;
}
aTotalFreeMem = pulse_free();
if (aTotalFreeMem >= bytes_to_write)
{
SHOW("wave_write > aTotalFreeMem(%d) >= bytes_to_write(%d)\n", aTotalFreeMem, bytes_to_write);
break;
}
// TBD: check if really helpful
if (aTotalFreeMem >= MAXLENGTH*2)
{
aTotalFreeMem = MAXLENGTH*2;
}
SHOW("wave_write > wait: aTotalFreeMem(%d) < bytes_to_write(%d)\n", aTotalFreeMem, bytes_to_write);
// 500: threshold for avoiding too many calls to pulse_write
if (aTotalFreeMem>500)
{
pulse_write(aBuffer, aTotalFreeMem);
bytes_to_write -= aTotalFreeMem;
aBuffer += aTotalFreeMem;
}
usleep(10000);
}
pulse_write(aBuffer, bytes_to_write);
terminate:
pthread_mutex_unlock(&pulse_mutex);
SHOW("wave_write: theSize=%d", theSize);
SHOW_TIME("wave_write > LEAVE");
return theSize;
}
static int pulse_pause(void)
{
trace ("pulse_pause\n");
if (state == OUTPUT_STATE_STOPPED)
{
return -1;
}
pulse_free();
state = OUTPUT_STATE_PAUSED;
return 0;
}
static void pulse_close(snd_ctl_ext_t * ext)
{
snd_ctl_pulse_t *ctl = ext->private_data;
assert(ctl);
if (ctl->p)
pulse_free(ctl->p);
free(ctl->source);
free(ctl->sink);
free(ctl);
}
static int pulse_setformat (ddb_waveformat_t *fmt)
{
int st = state;
memcpy (&requested_fmt, fmt, sizeof (ddb_waveformat_t));
if (!s
|| !memcmp (fmt, &plugin.fmt, sizeof (ddb_waveformat_t))) {
return 0;
}
pulse_free ();
pulse_init ();
int res = 0;
if (st == OUTPUT_STATE_PLAYING) {
res = pulse_play ();
}
else if (st == OUTPUT_STATE_PAUSED) {
res = pulse_pause ();
}
return res;
}
static void pulse_thread(void *context)
{
#ifdef __linux__
prctl(PR_SET_NAME, "deadbeef-pulse", 0, 0, 0, 0);
#endif
while (!pulse_terminate)
{
if (state != OUTPUT_STATE_PLAYING || !deadbeef->streamer_ok_to_read (-1))
{
usleep(10000);
continue;
}
int sample_size = plugin.fmt.channels * (plugin.fmt.bps / 8);
int bs = buffer_size;
int mod = bs % sample_size;
if (mod > 0) {
bs -= mod;
}
char buf[bs];
pulse_callback (buf, sizeof (buf));
int error;
deadbeef->mutex_lock(mutex);
int res = pa_simple_write(s, buf, sizeof (buf), &error);
deadbeef->mutex_unlock(mutex);
if (res < 0)
{
fprintf(stderr, "pulse: failed to write buffer\n");
pulse_tid = 0;
pulse_free ();
break;
}
}
}
static void *pulse_init(const char *device, unsigned rate, unsigned latency)
{
pa_sample_spec spec;
pa_t *pa;
pa_buffer_attr buffer_attr = {0};
const pa_buffer_attr *server_attr = NULL;
memset(&spec, 0, sizeof(spec));
pa = (pa_t*)calloc(1, sizeof(*pa));
if (!pa)
goto error;
pa->mainloop = pa_threaded_mainloop_new();
if (!pa->mainloop)
goto error;
pa->context = pa_context_new(pa_threaded_mainloop_get_api(pa->mainloop), "RetroArch");
if (!pa->context)
goto error;
pa_context_set_state_callback(pa->context, context_state_cb, pa);
if (pa_context_connect(pa->context, device, PA_CONTEXT_NOFLAGS, NULL) < 0)
goto error;
pa_threaded_mainloop_lock(pa->mainloop);
if (pa_threaded_mainloop_start(pa->mainloop) < 0)
goto error;
pa_threaded_mainloop_wait(pa->mainloop);
if (pa_context_get_state(pa->context) != PA_CONTEXT_READY)
goto unlock_error;
spec.format = is_little_endian() ? PA_SAMPLE_FLOAT32LE : PA_SAMPLE_FLOAT32BE;
spec.channels = 2;
spec.rate = rate;
pa->stream = pa_stream_new(pa->context, "audio", &spec, NULL);
if (!pa->stream)
goto unlock_error;
pa_stream_set_state_callback(pa->stream, stream_state_cb, pa);
pa_stream_set_write_callback(pa->stream, stream_request_cb, pa);
pa_stream_set_latency_update_callback(pa->stream, stream_latency_update_cb, pa);
pa_stream_set_underflow_callback(pa->stream, underrun_update_cb, pa);
pa_stream_set_buffer_attr_callback(pa->stream, buffer_attr_cb, pa);
buffer_attr.maxlength = -1;
buffer_attr.tlength = pa_usec_to_bytes(latency * PA_USEC_PER_MSEC, &spec);
buffer_attr.prebuf = -1;
buffer_attr.minreq = -1;
buffer_attr.fragsize = -1;
if (pa_stream_connect_playback(pa->stream, NULL, &buffer_attr, PA_STREAM_ADJUST_LATENCY, NULL, NULL) < 0)
goto error;
pa_threaded_mainloop_wait(pa->mainloop);
if (pa_stream_get_state(pa->stream) != PA_STREAM_READY)
goto unlock_error;
server_attr = pa_stream_get_buffer_attr(pa->stream);
if (server_attr)
{
pa->buffer_size = server_attr->tlength;
RARCH_LOG("[PulseAudio]: Requested %u bytes buffer, got %u.\n",
(unsigned)buffer_attr.tlength,
(unsigned)pa->buffer_size);
}
else
pa->buffer_size = buffer_attr.tlength;
pa_threaded_mainloop_unlock(pa->mainloop);
return pa;
unlock_error:
pa_threaded_mainloop_unlock(pa->mainloop);
error:
pulse_free(pa);
return NULL;
}
static int pulse_stop(void)
{
trace ("pulse_stop\n");
pulse_free();
return 0;
}
