static guint
gst_esdsink_delay (GstAudioSink * asink)
{
GstEsdSink *esdsink = GST_ESDSINK (asink);
guint latency;
latency = esd_get_latency (esdsink->ctrl_fd);
if (latency == (guint) - 1) {
GST_WARNING_OBJECT (asink, "couldn't get latency");
return 0;
}
/* latency is measured in samples at a rate of 44100, this
* cannot overflow. */
latency = latency * G_GINT64_CONSTANT (44100) / esdsink->rate;
GST_DEBUG_OBJECT (asink, "got latency: %u", latency);
return latency;
}
int AudioESound::open_output()
{
esd_format_t format = ESD_STREAM | ESD_PLAY;
device->out_channels = 2;
device->out_bits = 16;
format |= get_channels_flag(device->out_channels);
format |= get_bit_flag(device->out_bits);
if((esd_out = esd_open_sound(translate_device_string(device->out_config->esound_out_server, device->out_config->esound_out_port))) <= 0)
{
fprintf(stderr, "AudioESound::open_output: open failed\n");
return 1;
};
esd_out_fd = esd_play_stream_fallback(format, device->out_samplerate,
translate_device_string(device->out_config->esound_out_server, device->out_config->esound_out_port),
"Cinelerra");
device->device_buffer = esd_get_latency(esd_out);
device->device_buffer *= device->out_bits / 8 * device->out_channels;
return 0;
}
/*
* open & setup audio device
* return: 1=success 0=fail
*/
static int init(int rate_hz, int channels, int format, int flags)
{
esd_format_t esd_fmt;
int bytes_per_sample;
int fl;
char *server = ao_subdevice; /* NULL for localhost */
float lag_seconds, lag_net, lag_serv;
struct timeval proto_start, proto_end;
esd_fd = esd_open_sound(server);
if (esd_fd < 0) {
mp_msg(MSGT_AO, MSGL_ERR, MSGTR_AO_ESD_CantOpenSound,
strerror(errno));
return 0;
}
/* get server info, and measure network latency */
gettimeofday(&proto_start, NULL);
esd_svinfo = esd_get_server_info(esd_fd);
if(server) {
gettimeofday(&proto_end, NULL);
lag_net = (proto_end.tv_sec - proto_start.tv_sec) +
(proto_end.tv_usec - proto_start.tv_usec) / 1000000.0;
lag_net /= 2.0; /* round trip -> one way */
} else
lag_net = 0.0; /* no network lag */
/*
if (esd_svinfo) {
mp_msg(MSGT_AO, MSGL_INFO, "AO: [esd] server info:\n");
esd_print_server_info(esd_svinfo);
}
*/
esd_fmt = ESD_STREAM | ESD_PLAY;
#if ESD_RESAMPLES
/* let the esd daemon convert sample rate */
#else
/* let mplayer's audio filter convert the sample rate */
if (esd_svinfo != NULL)
rate_hz = esd_svinfo->rate;
#endif
ao_data.samplerate = rate_hz;
/* EsounD can play mono or stereo */
switch (channels) {
case 1:
esd_fmt |= ESD_MONO;
ao_data.channels = bytes_per_sample = 1;
break;
default:
esd_fmt |= ESD_STEREO;
ao_data.channels = bytes_per_sample = 2;
break;
}
/* EsounD can play 8bit unsigned and 16bit signed native */
switch (format) {
case AF_FORMAT_S8:
case AF_FORMAT_U8:
esd_fmt |= ESD_BITS8;
ao_data.format = AF_FORMAT_U8;
break;
default:
esd_fmt |= ESD_BITS16;
ao_data.format = AF_FORMAT_S16_NE;
bytes_per_sample *= 2;
break;
}
/* modify audio_delay depending on esd_latency
* latency is number of samples @ 44.1khz stereo 16 bit
* adjust according to rate_hz & bytes_per_sample
*/
#ifdef CONFIG_ESD_LATENCY
esd_latency = esd_get_latency(esd_fd);
#else
esd_latency = ((channels == 1 ? 2 : 1) * ESD_DEFAULT_RATE *
(ESD_BUF_SIZE + 64 * (4.0f / bytes_per_sample))
) / rate_hz;
esd_latency += ESD_BUF_SIZE * 2;
#endif
if(esd_latency > 0) {
lag_serv = (esd_latency * 4.0f) / (bytes_per_sample * rate_hz);
lag_seconds = lag_net + lag_serv;
audio_delay += lag_seconds;
mp_msg(MSGT_AO, MSGL_INFO,MSGTR_AO_ESD_LatencyInfo,
lag_serv, lag_net, lag_seconds);
}
esd_play_fd = esd_play_stream_fallback(esd_fmt, rate_hz,
server, ESD_CLIENT_NAME);
if (esd_play_fd < 0) {
mp_msg(MSGT_AO, MSGL_ERR, MSGTR_AO_ESD_CantOpenPBStream, strerror(errno));
return 0;
}
/* enable non-blocking i/o on the socket connection to the esd server */
if ((fl = fcntl(esd_play_fd, F_GETFL)) >= 0)
fcntl(esd_play_fd, F_SETFL, O_NDELAY|fl);
#if ESD_DEBUG
{
int sbuf, rbuf, len;
len = sizeof(sbuf);
getsockopt(esd_play_fd, SOL_SOCKET, SO_SNDBUF, &sbuf, &len);
len = sizeof(rbuf);
getsockopt(esd_play_fd, SOL_SOCKET, SO_RCVBUF, &rbuf, &len);
dprintf("esd: send/receive socket buffer space %d/%d bytes\n",
sbuf, rbuf);
}
#endif
ao_data.bps = bytes_per_sample * rate_hz;
ao_data.outburst = ao_data.bps > 100000 ? 4*ESD_BUF_SIZE : 2*ESD_BUF_SIZE;
esd_play_start.tv_sec = 0;
esd_samples_written = 0;
esd_bytes_per_sample = bytes_per_sample;
return 1;
}
