static void *pa_monitor() {
bool output_off;
LOCK;
if (monitor_thread_running) {
LOG_DEBUG("monitor thread already running");
UNLOCK;
return 0;
}
LOG_DEBUG("start monitor thread");
monitor_thread_running = true;
output_off = (output.state == OUTPUT_OFF);
while (monitor_thread_running) {
if (output_off) {
if (output.state != OUTPUT_OFF) {
LOG_INFO("output on");
break;
}
} else {
// this is a hack to partially support hot plugging of devices
// we rely on terminating and reinitalising PA to get an updated list of devices and use name for output.device
LOG_INFO("probing device %s", output.device);
Pa_Terminate();
Pa_Initialize();
pa.stream = NULL;
if (pa_device_id(output.device) != -1) {
LOG_INFO("device reopen");
break;
}
}
UNLOCK;
sleep(output_off ? 1 : 5);
LOCK;
}
LOG_DEBUG("end monitor thread");
monitor_thread_running = false;
pa.stream = NULL;
_pa_open();
UNLOCK;
return 0;
}
static int pa_device_id(const char *device) {
int len = strlen(device);
int i;
if (!strncmp(device, "default", 7)) {
#ifndef PA18API
return Pa_GetDefaultOutputDevice();
#else
return Pa_GetDefaultOutputDeviceID();
#endif
}
if (len >= 1 && len <= 2 && device[0] >= '0' && device[0] <= '9') {
return atoi(device);
}
#ifndef PA18API
#define DEVICE_ID_MAXLEN 256
for (i = 0; i < Pa_GetDeviceCount(); ++i) {
char tmp[DEVICE_ID_MAXLEN];
snprintf(tmp, DEVICE_ID_MAXLEN, "%s [%s]", Pa_GetDeviceInfo(i)->name, Pa_GetHostApiInfo(Pa_GetDeviceInfo(i)->hostApi)->name);
if (!strncmp(tmp, device, len)) {
#else
for (i = 0; i < Pa_CountDevices(); ++i) {
if (!strncmp(Pa_GetDeviceInfo(i)->name, device, len)) {
#endif
return i;
}
}
return -1;
}
#ifndef PA18API
static int pa_callback(const void *pa_input, void *pa_output, unsigned long pa_frames_wanted,
const PaStreamCallbackTimeInfo *timeInfo, PaStreamCallbackFlags statusFlags, void *userData);
#else
static int pa_callback(void *pa_input, void *pa_output, unsigned long pa_frames_wanted,
PaTimestamp outTime, void *userData);
#endif
bool test_open(const char *device, unsigned rates[]) {
PaStreamParameters outputParameters;
PaError err;
unsigned ref[] TEST_RATES;
int device_id, i, ind;
if ((device_id = pa_device_id(device)) == -1) {
LOG_INFO("device %s not found", device);
return false;
}
outputParameters.device = device_id;
outputParameters.channelCount = 2;
outputParameters.sampleFormat = paInt32;
#ifndef PA18API
outputParameters.suggestedLatency =
output.latency ? (double)output.latency/(double)1000 : Pa_GetDeviceInfo(outputParameters.device)->defaultHighOutputLatency;
outputParameters.hostApiSpecificStreamInfo = NULL;
#endif
// check supported sample rates
// Note use Pa_OpenStream as it appears more reliable than Pa_IsFormatSupported on some windows apis
for (i = 0, ind = 0; ref[i]; ++i) {
#ifndef PA18API
err = Pa_OpenStream(&pa.stream, NULL, &outputParameters, (double)ref[i], paFramesPerBufferUnspecified, paNoFlag,
pa_callback, NULL);
#else
err = Pa_OpenStream(&pa.stream, paNoDevice, 0, 0, NULL, outputParameters.device,
outputParameters.channelCount, outputParameters.sampleFormat, NULL, (double)ref[i],
paFramesPerBuffer, paNumberOfBuffers, paNoFlag, pa_callback, NULL);
#endif
if (err == paNoError) {
Pa_CloseStream(pa.stream);
rates[ind++] = ref[i];
}
}
if (!rates[0]) {
LOG_WARN("no available rate found");
return false;
}
pa.stream = NULL;
return true;
}
static void pa_stream_finished(void *userdata) {
if (running) {
LOG_INFO("stream finished");
LOCK;
output.pa_reopen = true;
wake_controller();
UNLOCK;
}
}
static thread_type monitor_thread;
bool monitor_thread_running = false;
static void *pa_monitor() {
bool output_off;
LOCK;
if (monitor_thread_running) {
LOG_DEBUG("monitor thread already running");
UNLOCK;
return 0;
}
LOG_DEBUG("start monitor thread");
monitor_thread_running = true;
output_off = (output.state == OUTPUT_OFF);
while (monitor_thread_running) {
if (output_off) {
if (output.state != OUTPUT_OFF) {
LOG_INFO("output on");
break;
}
} else {
// this is a hack to partially support hot plugging of devices
// we rely on terminating and reinitalising PA to get an updated list of devices and use name for output.device
LOG_INFO("probing device %s", output.device);
Pa_Terminate();
Pa_Initialize();
pa.stream = NULL;
if (pa_device_id(output.device) != -1) {
LOG_INFO("device reopen");
break;
}
}
UNLOCK;
sleep(output_off ? 1 : 5);
LOCK;
}
LOG_DEBUG("end monitor thread");
monitor_thread_running = false;
pa.stream = NULL;
_pa_open();
UNLOCK;
return 0;
}
static void slimproto_run() {
static u8_t buffer[MAXBUF];
int expect = 0;
int got = 0;
u32_t now;
static u32_t last = 0;
event_handle ehandles[2];
int timeouts = 0;
set_readwake_handles(ehandles, sock, wake_e);
while (running && !new_server) {
bool wake = false;
event_type ev;
if ((ev = wait_readwake(ehandles, 1000)) != EVENT_TIMEOUT) {
if (ev == EVENT_READ) {
if (expect > 0) {
int n = recv(sock, buffer + got, expect, 0);
if (n <= 0) {
LOG_INFO("error reading from socket: %s", n ? strerror(last_error()) : "closed");
return;
}
expect -= n;
got += n;
if (expect == 0) {
process(buffer, got);
got = 0;
}
} else if (expect == 0) {
int n = recv(sock, buffer + got, 2 - got, 0);
if (n <= 0) {
LOG_INFO("error reading from socket: %s", n ? strerror(last_error()) : "closed");
return;
}
got += n;
if (got == 2) {
expect = buffer[0] << 8 | buffer[1]; // length pack 'n'
got = 0;
if (expect > MAXBUF) {
LOG_ERROR("FATAL: slimproto packet too big: %d > %d", expect, MAXBUF);
return;
}
}
} else {
LOG_ERROR("FATAL: negative expect");
return;
}
}
if (ev == EVENT_WAKE) {
wake = true;
}
timeouts = 0;
} else if (++timeouts > 35) {
// expect message from server every 5 seconds, but 30 seconds on mysb.com so timeout after 35 seconds
LOG_INFO("No messages from server - connection dead");
return;
}
// update playback state when woken or every 100ms
now = gettime_ms();
if (wake || now - last > 100 || last > now) {
bool _sendSTMs = false;
bool _sendDSCO = false;
bool _sendRESP = false;
bool _sendMETA = false;
bool _sendSTMd = false;
bool _sendSTMt = false;
bool _sendSTMl = false;
bool _sendSTMu = false;
bool _sendSTMo = false;
bool _sendSTMn = false;
disconnect_code disconnect;
static char header[MAX_HEADER];
size_t header_len = 0;
last = now;
LOCK_S;
status.stream_full = _buf_used(streambuf);
status.stream_size = streambuf->size;
status.stream_bytes = stream.bytes;
status.stream_state = stream.state;
if (stream.state == DISCONNECT) {
disconnect = stream.disconnect;
stream.state = STOPPED;
_sendDSCO = true;
}
if (!stream.sent_headers &&
(stream.state == STREAMING_HTTP || stream.state == STREAMING_WAIT || stream.state == STREAMING_BUFFERING)) {
header_len = stream.header_len;
memcpy(header, stream.header, header_len);
_sendRESP = true;
stream.sent_headers = true;
}
if (stream.meta_send) {
header_len = stream.header_len;
memcpy(header, stream.header, header_len);
_sendMETA = true;
stream.meta_send = false;
}
UNLOCK_S;
LOCK_O;
status.output_full = _buf_used(outputbuf);
status.output_size = outputbuf->size;
status.frames_played = output.frames_played;
status.current_sample_rate = output.current_sample_rate;
status.updated = output.updated;
status.device_frames = output.device_frames;
if (output.track_started) {
_sendSTMs = true;
output.track_started = false;
status.stream_start = output.updated;
}
#if PORTAUDIO
if (output.pa_reopen) {
_pa_open();
output.pa_reopen = false;
}
#endif
if (output.state == OUTPUT_RUNNING && !sentSTMu && status.output_full == 0 && status.stream_state <= DISCONNECT) {
_sendSTMu = true;
sentSTMu = true;
}
if (output.state == OUTPUT_RUNNING && !sentSTMo && status.output_full == 0 && status.stream_state == STREAMING_HTTP) {
_sendSTMo = true;
sentSTMo = true;
}
UNLOCK_O;
LOCK_D;
if (decode.state == DECODE_RUNNING && now - status.last > 1000) {
_sendSTMt = true;
status.last = now;
}
if (decode.state == DECODE_COMPLETE) {
_sendSTMd = true;
decode.state = DECODE_STOPPED;
}
if (decode.state == DECODE_ERROR) {
_sendSTMn = true;
decode.state = DECODE_STOPPED;
}
if ((status.stream_state == STREAMING_HTTP || status.stream_state == STREAMING_FILE) && !sentSTMl
&& decode.state == DECODE_STOPPED) {
if (autostart == 0) {
_sendSTMl = true;
sentSTMl = true;
} else if (autostart == 1) {
decode.state = DECODE_RUNNING;
LOCK_O;
if (output.state == OUTPUT_STOPPED) {
output.state = OUTPUT_BUFFER;
}
UNLOCK_O;
}
// autostart 2 and 3 require cont to be received first
}
UNLOCK_D;
// send packets once locks released as packet sending can block
if (_sendDSCO) sendDSCO(disconnect);
if (_sendSTMs) sendSTAT("STMs", 0);
if (_sendSTMd) sendSTAT("STMd", 0);
if (_sendSTMt) sendSTAT("STMt", 0);
if (_sendSTMl) sendSTAT("STMl", 0);
if (_sendSTMu) sendSTAT("STMu", 0);
if (_sendSTMo) sendSTAT("STMo", 0);
if (_sendSTMn) sendSTAT("STMn", 0);
if (_sendRESP) sendRESP(header, header_len);
if (_sendMETA) sendMETA(header, header_len);
}
}
}
