// Called by slimproto when the "vers" command is received from the
// server to signal the version.
static int vers_callback(slimproto_t *p, const unsigned char *buf,
int buf_len, void *user_data) {
slimaudio_t* const audio = (slimaudio_t*)user_data;
if (audio->keepalive_interval != -1) {
// Keepalive interval has been set explicitly, don't overwrite.
DEBUGF("Explicit keepalive interval: %d s. "
"Will not override.\n", audio->keepalive_interval);
return 0;
}
slimproto_msg_t msg;
slimproto_parse_command(buf, buf_len, &msg);
DEBUGF("Server version: %x\n", msg.vers.version);
if ((msg.vers.version >= 0x00060500) && (msg.vers.version < 0x00070200)) {
// 6.5.0<->7.2.0 Squeezebox Server needs a player to send
// a keepalive message every 10 seconds or so before it declares
// it down.
slimaudio_set_keepalive_interval(audio, 10);
DEBUGF("Using 6.5.x default keepalive interval: %d s.\n",
audio->keepalive_interval);
}
return 0;
}
/*
* Callback for the 'audg' command
*/
static int audg_callback(slimproto_t *proto, const unsigned char *buf, int buf_len, void *user_data) {
slimproto_msg_t msg;
slimaudio_t* const audio = (slimaudio_t *) user_data;
slimproto_parse_command(buf, buf_len, &msg);
DEBUGF("audg cmd: left_gain:%u right_gain:%u volume:%f old_left_gain:%u old_right_gain:%u",
msg.audg.left_gain, msg.audg.right_gain, audio->volume,
msg.audg.old_left_gain, msg.audg.old_right_gain);
VDEBUGF(" preamp:%hhu digital_volume_control:%hhu", msg.audg.preamp, msg.audg.digital_volume_control);
DEBUGF("\n");
audio->vol_adjust = (float) (msg.audg.left_gain) / 65536.0;
slimaudio_output_vol_adjust(audio);
return 0;
}
/*
* Callback for 'strm' command.
*/
static int strm_callback(slimproto_t *proto, const unsigned char *buf, int buf_len, void *user_data) {
slimproto_msg_t msg;
slimaudio_t *audio = (slimaudio_t *) user_data;
slimproto_parse_command(buf, buf_len, &msg);
DEBUGF("strm cmd %c\n", msg.strm.command);
switch (msg.strm.command) {
case 's': /* start */
slimaudio_http_connect(audio, &msg);
slimaudio_decoder_connect(audio, &msg);
slimaudio_output_connect(audio, &msg);
break;
case 'p': /* pause */
slimaudio_output_pause(audio);
break;
case 'u': /* unpause */
slimaudio_output_unpause(audio);
break;
case 'q': /* stop */
audio_stop(audio);
break;
case 't': /* status */
break;
}
slimaudio_stat(audio, (char *)&msg.strm.cmd);
DEBUGF("DONE strm cmd %c\n", msg.strm.command);
return 0;
}
/*
* Callback for 'strm' command.
*/
static int strm_callback(slimproto_t *proto, const unsigned char *buf, int buf_len, void *user_data) {
slimproto_msg_t msg;
float replay_gain;
slimaudio_t *audio = (slimaudio_t *) user_data;
slimproto_parse_command(buf, buf_len, &msg);
DEBUGF("strm cmd %c strm.replay_gain:%u ", msg.strm.command, msg.strm.replay_gain);
switch (msg.strm.command) {
case 's': /* start */
replay_gain = (float) (msg.strm.replay_gain) / 65536.0;
audio->start_replay_gain = replay_gain == 0.0 ? 1.0 : replay_gain;
if (audio->replay_gain == -1.0)
audio->replay_gain = audio->start_replay_gain;
DEBUGF("start_replay_gain:%f\n", audio->start_replay_gain);
slimaudio_stat(audio, "STMc", (u32_t) 0); /* connect, acknowledge strm-s */
slimaudio_http_connect(audio, &msg);
slimaudio_decoder_connect(audio, &msg);
slimaudio_output_connect(audio, &msg);
break;
case 'p': /* pause */
DEBUGF("\n");
slimaudio_output_pause(audio);
/* Only send STMp if interval is zero */
if (! msg.strm.replay_gain)
slimaudio_stat(audio, "STMp", (u32_t) 0); /* pause */
break;
case 'u': /* unpause */
DEBUGF("\n");
slimaudio_output_unpause(audio);
slimaudio_stat(audio, "STMr", (u32_t) 0); /* resume */
break;
case 'q': /* stop */
DEBUGF("\n");
audio_stop(audio);
slimaudio_stat(audio, "STMf", (u32_t) 0); /* acknowledge stop cmd */
break;
case 'f': /* flush */
DEBUGF("\n");
slimaudio_buffer_flush(audio->decoder_buffer);
slimaudio_buffer_flush(audio->output_buffer);
slimaudio_stat(audio, "STMf", (u32_t) 0); /* acknowledge flush cmd */
break;
case 'a': /* skip ahead */
DEBUGF("\n");
break;
case 't': /* status */
DEBUGF("\n");
slimaudio_stat(audio, "STMt", msg.strm.replay_gain);
break;
}
DEBUGF("DONE strm cmd %c\n", msg.strm.command);
return 0;
}
