/* returns error */
int APP_CC
xrdp_tcp_send(struct xrdp_tcp* self, struct stream* s)
{
DEBUG((" in xrdp_tcp_send, gota send %d bytes", len));
if (trans_force_write_s(self->trans, s) != 0)
{
DEBUG((" error in trans_force_write_s"));
return 1;
}
DEBUG((" out xrdp_tcp_send, sent %d bytes ok", len));
return 0;
}
static void *DEFAULT_CC
read_raw_audio_data(void *arg)
{
pa_sample_spec samp_spec;
pa_simple *simple = NULL;
uint32_t bytes_read;
char *cptr;
int i;
int error;
struct trans *strans;
char path[256];
struct stream *outs;
strans = trans_create(TRANS_MODE_UNIX, 8192, 8192);
if (strans == 0)
{
LOG(0, ("read_raw_audio_data: trans_create failed\n"));
return 0;
}
strans->trans_data_in = sttrans_data_in;
g_snprintf(path, 255, "/tmp/xrdp_chansrv_audio_socket_%d", g_display_num);
if (trans_connect(strans, "", path, 100) != 0)
{
LOG(0, ("read_raw_audio_data: trans_connect failed\n"));
trans_delete(strans);
return 0;
}
/* setup audio format */
samp_spec.format = PA_SAMPLE_S16LE;
samp_spec.rate = 44100;
samp_spec.channels = 2;
/* if we are root, then for first 8 seconds connection to pulseaudo server
fails; if we are non-root, then connection succeeds on first attempt;
for now we have changed code to be non-root, but this may change in the
future - so pretend we are root and try connecting to pulseaudio server
for upto one minute */
for (i = 0; i < 60; i++)
{
simple = pa_simple_new(NULL, "xrdp", PA_STREAM_RECORD, NULL,
"record", &samp_spec, NULL, NULL, &error);
if (simple)
{
/* connected to pulseaudio server */
LOG(0, ("read_raw_audio_data: connected to pulseaudio server\n"));
break;
}
LOG(0, ("read_raw_audio_data: ERROR creating PulseAudio async interface\n"));
LOG(0, ("read_raw_audio_data: %s\n", pa_strerror(error)));
g_sleep(1000);
}
if (i == 60)
{
/* failed to connect to audio server */
trans_delete(strans);
return NULL;
}
/* insert header just once */
outs = trans_get_out_s(strans, 8192);
out_uint32_le(outs, 0);
out_uint32_le(outs, AUDIO_BUF_SIZE + 8);
cptr = outs->p;
out_uint8s(outs, AUDIO_BUF_SIZE);
s_mark_end(outs);
while (1)
{
/* read a block of raw audio data... */
g_memset(cptr, 0, 4);
bytes_read = pa_simple_read(simple, cptr, AUDIO_BUF_SIZE, &error);
if (bytes_read < 0)
{
LOG(0, ("read_raw_audio_data: ERROR reading from pulseaudio stream\n"));
LOG(0, ("read_raw_audio_data: %s\n", pa_strerror(error)));
break;
}
/* bug workaround:
even when there is no audio data, pulseaudio is returning without
errors but the data itself is zero; we use this zero data to
determine that there is no audio data present */
if (*cptr == 0 && *(cptr + 1) == 0 && *(cptr + 2) == 0 && *(cptr + 3) == 0)
{
g_sleep(10);
continue;
}
if (trans_force_write_s(strans, outs) != 0)
{
LOG(0, ("read_raw_audio_data: ERROR writing audio data to server\n"));
break;
}
}
pa_simple_free(simple);
trans_delete(strans);
return NULL;
}
int APP_CC
trans_force_write(struct trans *self)
{
return trans_force_write_s(self, self->out_s);
}
