static
void do_jack_output(process_jack_t *proc)
{
output_port_t *port = (output_port_t*) proc->port;
int nevents = jack_midi_get_event_count(proc->buffer);
int i;
if (nevents)
debug_log("jack_out: %d events in %s", nevents, port->base.name);
for (i=0; i<nevents; ++i) {
jack_midi_event_t event;
event_head_t hdr;
jack_midi_event_get(&event, proc->buffer, i);
if (jack_ringbuffer_write_space(port->base.data_ring) < event.size || jack_ringbuffer_write_space(port->base.event_ring) < sizeof(hdr)) {
debug_log("jack_out: output buffer overflow on %s", port->base.name);
break;
}
midi_pack_event(&port->packer, &event);
jack_ringbuffer_write(port->base.data_ring, (char*)event.buffer, event.size);
hdr.time = proc->frame_time + event.time + proc->nframes;
hdr.size = event.size;
jack_ringbuffer_write(port->base.event_ring, (char*)&hdr, sizeof(hdr));
debug_log("jack_out: sent %d-byte event at %ld", (int)event.size, (long)event.time);
}
}
static void vorbis_send(VORBIS_STREAM *stream) {
jack_ringbuffer_write(stream->header.ringbuf,
(const char *)stream->og.header, stream->og.header_len);
jack_ringbuffer_write(stream->header.ringbuf,
(const char *)stream->og.body, stream->og.body_len);
return;
}
void CALLBACK JackWinMMEDriver::MidiInProc(HMIDIIN hMidiIn, UINT wMsg, DWORD userData, DWORD dwParam1, DWORD dwParam2)
{
jack_ringbuffer_t* ringbuffer = (jack_ringbuffer_t*)userData;
//jack_info("JackWinMMEDriver::MidiInProc 0\n");
switch (wMsg) {
case MIM_OPEN:
break;
case MIM_ERROR:
case MIM_DATA: {
//jack_info("JackWinMMEDriver::MidiInProc");
// One event
unsigned int num_packet = 1;
jack_ringbuffer_write(ringbuffer, (char*)&num_packet, sizeof(unsigned int));
// Write event actual data
jack_ringbuffer_write(ringbuffer, (char*)&dwParam1, 3);
break;
}
case MIM_LONGERROR:
case MIM_LONGDATA:
/*
Nothing for now
*/
break;
}
}
void *thread_blocked(void *arg){
int datasize=SOUND_BUFFER_SIZE*sizeof (REALTYPE);
//try to get realtime
sched_param sc;
sc.sched_priority=50;
int err=sched_setscheduler(0,SCHED_FIFO,&sc);
pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS,NULL);
pthread_mutex_lock(&zyn_thread_lock);
while (jackfinish==0){
while (jack_ringbuffer_write_space(rb)>=datasize){
pthread_mutex_lock(&jackmaster->mutex);
jackmaster->GetAudioOutSamples(SOUND_BUFFER_SIZE,jack_get_sample_rate(jackclient),jackoutl,jackoutr);
pthread_mutex_unlock(&jackmaster->mutex);
jack_ringbuffer_write(rb, (char *) jackoutl,datasize);
jack_ringbuffer_write(rb, (char *) jackoutr,datasize);
};
pthread_cond_wait(&more_data,&zyn_thread_lock);
};
pthread_mutex_unlock(&zyn_thread_lock);
return(0);
};
LV2_Worker_Status Lv2Worker::scheduleWork(const void *data, uint32_t size)
{
printf("scheduling work of size %d\n", size);
jack_ringbuffer_write(requestBuffer, (const char*)&size, sizeof(size));
jack_ringbuffer_write(requestBuffer, (const char*)data, size);
sem_post(&semaphore); // wake up worker
return LV2_WORKER_SUCCESS;
}
void RtMidiOutJack :: sendMessage( std::vector<unsigned char> *message )
{
int nBytes = message->size();
JackMidiData *data = static_cast<JackMidiData *> (apiData_);
// Write full message to buffer
jack_ringbuffer_write( data->buffMessage, ( const char * ) &( *message )[0],
message->size() );
jack_ringbuffer_write( data->buffSize, ( char * ) &nBytes, sizeof( nBytes ) );
}
static
void input_event(alsa_seqmidi_t *self, snd_seq_event_t *alsa_event, struct process_info* info)
{
jack_midi_data_t data[MAX_EVENT_SIZE];
stream_t *str = &self->stream[PORT_INPUT];
long size;
int64_t alsa_time, time_offset;
int64_t frame_offset, event_frame;
port_t *port;
port = port_get(str->ports, alsa_event->source);
if (!port)
return;
/*
* RPNs, NRPNs, Bank Change, etc. need special handling
* but seems, ALSA does it for us already.
*/
snd_midi_event_reset_decode(str->codec);
if ((size = snd_midi_event_decode(str->codec, data, sizeof(data), alsa_event))<0)
return;
// fixup NoteOn with vel 0
if ((data[0] & 0xF0) == 0x90 && data[2] == 0x00) {
data[0] = 0x80 + (data[0] & 0x0F);
data[2] = 0x40;
}
alsa_time = alsa_event->time.time.tv_sec * NSEC_PER_SEC + alsa_event->time.time.tv_nsec;
time_offset = info->alsa_time - alsa_time;
frame_offset = (info->sample_rate * time_offset) / NSEC_PER_SEC;
event_frame = (int64_t)info->cur_frames - info->period_start - frame_offset + info->nframes;
debug_log("input: %d bytes at event_frame = %d", (int)size, (int)event_frame);
if (event_frame >= info->nframes &&
jack_ringbuffer_write_space(port->early_events) >= (sizeof(alsa_midi_event_t) + size)) {
alsa_midi_event_t ev;
ev.time = event_frame + info->period_start;
ev.size = size;
jack_ringbuffer_write(port->early_events, (char*)&ev, sizeof(ev));
jack_ringbuffer_write(port->early_events, (char*)data, size);
debug_log("postponed to next frame +%d", (int) (event_frame - info->nframes));
return;
}
if (event_frame < 0)
event_frame = 0;
else if (event_frame >= info->nframes)
event_frame = info->nframes - 1;
jack_midi_event_write(port->jack_buf, event_frame, data, size);
}
void JACKAudioSource::ReceiveAudio(float *inLeft, float *inRight, UINT frames)
{
if (!inLeft || !inRight)
return;
for (UINT j = 0, i = 0; i < frames; i++)
{
if (jack_ringbuffer_write_space(sampleBuffer) < (sizeof(float)*2))
break;
jack_ringbuffer_write(sampleBuffer, (const char *)&inLeft[i], sizeof(float));
jack_ringbuffer_write(sampleBuffer, (const char *)&inRight[i], sizeof(float));
}
}
int
process (jack_nframes_t nframes, void *arg)
{
ad_rec_t *handle = (ad_rec_t *) arg;
size_t buffer_size = jack_ringbuffer_write_space (handle->rbuffer);
jack_default_audio_sample_t *in = (jack_default_audio_sample_t *) jack_port_get_buffer (handle->input_port, nframes);
if (buffer_size <= 0) {
fprintf(stderr, "JACK: buffer is full. Deactivating JACK client.\n");
return 1;
}
/* Write to jack ringbuffer which should be thread safe */
jack_ringbuffer_write (handle->rbuffer, (char*) in, sample_size * nframes);
#ifdef MIC_SPEAKER_PASSTHROUGH_DEBUG
jack_default_audio_sample_t *out = (jack_default_audio_sample_t *) jack_port_get_buffer (handle->output_port, nframes);
/* Output mic output to speakers (Just for testing) */
memcpy (out, in, sample_size * nframes);
#endif
return 0;
}
/* Callback called by JACK when audio is available
Use as little CPU time as possible, just copy accross the audio
into the ring buffer
*/
static int process_callback(jack_nframes_t nframes, void *arg)
{
MastSendTool* tool = (MastSendTool*)arg;
unsigned int channels = tool->get_input_channels();
size_t to_write = 0, written = 0;
unsigned int c,n;
// Process channel by channel
for (c=0; c < channels; c++)
{
jack_default_audio_sample_t *buf = (jack_default_audio_sample_t*)
jack_port_get_buffer(g_jackport[c], nframes);
// Interleave the left and right channels
for(n=0; n<nframes; n++) {
g_interleavebuf[(n*channels)+c] = buf[n];
}
}
// Now write the interleaved audio to the ring buffer
to_write = sizeof(float) * nframes * channels;
written = jack_ringbuffer_write(g_ringbuffer, (char*)g_interleavebuf, to_write);
if (to_write > written) {
// If this goes wrong, then the buffer goes out of sync and we get static
MAST_FATAL("Failed to write to ring ruffer, try increading the ring-buffer size");
return 1;
}
// Signal the other thread that audio is available
pthread_cond_signal(&g_ringbuffer_cond);
// Success
return 0;
}
// Data transmission methods.
bool qmidinetJackMidiDevice::sendData (
unsigned char *data, unsigned short len, int port ) const
{
if (port < 0 || port >= m_nports)
return false;
if (m_pJackBufferOut == NULL)
return false;
const unsigned int nlimit
= jack_ringbuffer_write_space(m_pJackBufferOut);
if (sizeof(qmidinetJackMidiEvent) + len < nlimit) {
unsigned char achBuffer[nlimit];
unsigned char *pchBuffer = &achBuffer[0];
qmidinetJackMidiEvent *pJackEventOut
= (struct qmidinetJackMidiEvent *) pchBuffer;
pchBuffer += sizeof(qmidinetJackMidiEvent);
memcpy(pchBuffer, data, len);
pJackEventOut->event.time = jack_frame_time(m_pJackClient);
pJackEventOut->event.buffer = (jack_midi_data_t *) pchBuffer;
pJackEventOut->event.size = len;
pJackEventOut->port = port;
#ifdef CONFIG_DEBUG
// - show (output) event for debug purposes...
fprintf(stderr, "JACK MIDI Out Port %d:", port);
for (unsigned int i = 0; i < len; ++i)
fprintf(stderr, " 0x%02x", (unsigned char) pchBuffer[i]);
fprintf(stderr, "\n");
#endif
jack_ringbuffer_write(m_pJackBufferOut,
(const char *) achBuffer, sizeof(qmidinetJackMidiEvent) + len);
}
return true;
}
static int jack_process(jack_nframes_t nframes, void *arg)
{
int i;
int samples_written, result;
jack_t * priv = arg;
int write_space;
char *out;
pthread_mutex_lock(&priv->active_mutex);
// fprintf(stderr, "Jack Process %d\n", nframes);
/* Check if there is enough space */
for(i = 0; i < priv->num_ports; i++)
{
if(!priv->ports[i].active)
continue;
write_space = jack_ringbuffer_write_space(priv->ports[i].buffer);
if(write_space < nframes * sizeof(float))
{
bg_log(BG_LOG_WARNING, LOG_DOMAIN, "Dropping %d samples", nframes);
pthread_mutex_unlock(&priv->active_mutex);
return 0;
}
}
for(i = 0; i < priv->num_ports; i++)
{
if(!priv->ports[i].active)
continue;
samples_written = 0;
out = jack_port_get_buffer(priv->ports[i].int_port, nframes);
while(samples_written < nframes)
{
result =
jack_ringbuffer_write(priv->ports[i].buffer,
out + samples_written * sizeof(float),
(nframes - samples_written) *
sizeof(float));
#if 0
if(i)
fprintf(stderr, "Write %d %d %ld\n", samples_written,
f->valid_samples - samples_written, result);
#endif
result /= sizeof(float);
samples_written += result;
}
}
pthread_mutex_unlock(&priv->active_mutex);
return 0;
}
/*
* The process callback for this JACK application.
* It is called by JACK at the appropriate times.
* @nframes :
* @arg :
*/
int
process (jack_nframes_t nframes, void *arg)
{
JackCard* obj = (JackCard*) arg;
sample_t *out;
sample_t *in;
if (obj->clear && !obj->write.can_process) {
out = (sample_t *) jack_port_get_buffer (obj->write.port, nframes);
memset (out, 0, nframes * sizeof(sample_t));
obj->clear = FALSE;
}
if (!obj->can_process)
return 0;
if(obj->read.can_process) {
in = (sample_t *) jack_port_get_buffer (obj->read.port, nframes);
jack_ringbuffer_write (obj->read.buffer, (void *) in, sizeof(sample_t) * nframes);
}
if (obj->write.can_process) {
out = (sample_t *) jack_port_get_buffer (obj->write.port, nframes);
memset (out, 0, nframes * sizeof(sample_t));
if (obj->clear && jack_ringbuffer_read_space(obj->write.buffer) == 0) {
obj->write.can_process = FALSE;
if (!obj->read.open)
obj->can_process = FALSE;
obj->clear = FALSE;
return 0;
}
jack_ringbuffer_read (obj->write.buffer, (void *) out, sizeof(sample_t) * nframes);
}
return 0;
}
int JackClient::processJackCallback(jack_nframes_t nFrames, void* arg)
{
JackClient* jackClient = static_cast<JackClient*>(arg);
jack_default_audio_sample_t* p_leftChannelInputAudioSamples = reinterpret_cast<jack_default_audio_sample_t*>(jack_port_get_buffer(m_p_leftChannelInputPort, nFrames));
jack_default_audio_sample_t* p_rightChannelInputAudioSamples = reinterpret_cast<jack_default_audio_sample_t*>(jack_port_get_buffer(m_p_rightChannelInputPort, nFrames));
jack_default_audio_sample_t sampleBuffer[nFrames];
uint32_t sampleIndex = 0;
double avgSampleValue = 0;
for (sampleIndex = 0; sampleIndex < nFrames; sampleIndex++) {
avgSampleValue += fabs(p_leftChannelInputAudioSamples[sampleIndex]);
avgSampleValue += fabs(p_rightChannelInputAudioSamples[sampleIndex]);
}
m_lastAudioSample = avgSampleValue / (2 * nFrames);
// get avg of the two channels
// TODO(scasa):check if this is right...
for (uint32_t i = 0; i < nFrames; i++) {
sampleBuffer[i] = (p_leftChannelInputAudioSamples[i] + p_rightChannelInputAudioSamples[i]) / 2;
}
const uint32_t writeSizeInByte = nFrames * sizeof(jack_default_audio_sample_t);
if (jack_ringbuffer_write_space(jackClient->getRingBuffer()) >= writeSizeInByte) {
// DEBUG_PRINT("write to ringbuffer, %d byte", writeSizeInByte);
jack_ringbuffer_write(jackClient->getRingBuffer(), reinterpret_cast<const char*>(sampleBuffer), writeSizeInByte);
}
return 0;
}
int
JackLayer::process_capture(jack_nframes_t frames, void *arg)
{
JackLayer *context = static_cast<JackLayer*>(arg);
for (unsigned i = 0; i < context->in_ringbuffers_.size(); ++i) {
// read from input
jack_default_audio_sample_t *in_buffers = static_cast<jack_default_audio_sample_t*>(jack_port_get_buffer(context->in_ports_[i], frames));
const size_t bytes_to_read = frames * sizeof(*in_buffers);
size_t bytes_to_rb = jack_ringbuffer_write(context->in_ringbuffers_[i], (char *) in_buffers, bytes_to_read);
// fill the rest with silence
if (bytes_to_rb < bytes_to_read) {
// TODO: set some flag for underrun?
RING_WARN("Dropped %lu bytes", bytes_to_read - bytes_to_rb);
}
}
/* Tell the ringbuffer thread there is work to do. If it is already
* running, the lock will not be available. We can't wait
* here in the process() thread, but we don't need to signal
* in that case, because the ringbuffer thread will read all the
* data queued before waiting again. */
if (context->ringbuffer_thread_mutex_.try_lock()) {
context->data_ready_.notify_one();
context->ringbuffer_thread_mutex_.unlock();
}
return 0;
}
void *read_handler(void *arg)
{
int i, cntr;
uint32_t rate = rate_thread;
uint32_t size = size_thread;
uint64_t buffer[3];
cntr = 0;
while(cntr < (size + 1) * rate)
{
if(sock_thread < 0) break;
if(*rx_cntr[0] < 1000)
{
usleep(100);
continue;
}
for(i = 0; i < 500; ++i)
{
buffer[0] = *rx_data[0];
buffer[1] = *rx_data[1];
buffer[2] = *rx_data[2];
jack_ringbuffer_write(sweep_data, (char *)buffer, 24);
}
++cntr;
}
return NULL;
}
void dsp_message(const char *msg)
{
if(jack_ringbuffer_write_space(dsp_ring) >= 2048)
jack_ringbuffer_write(dsp_ring, msg, 2048);
else
puts("dsp ringbuffer full...");
}
static
void jack_process(alsa_seqmidi_t *self, struct process_info *info)
{
stream_t *str = &self->stream[info->dir];
port_jack_func process = port_type[info->dir].jack_func;
int i, del=0;
add_ports(str);
// process ports
for (i=0; i<PORT_HASH_SIZE; ++i) {
port_t **pport = &str->ports[i];
while (*pport) {
port_t *port = *pport;
port->jack_buf = jack_port_get_buffer(port->jack_port, info->nframes);
if (info->dir == PORT_INPUT)
jack_midi_clear_buffer(port->jack_buf);
if (!port->is_dead)
(*process)(self, port, info);
else if (jack_ringbuffer_write_space(self->port_del) >= sizeof(port)) {
debug_log("jack: removed port %s", port->name);
*pport = port->next;
jack_ringbuffer_write(self->port_del, (char*)&port, sizeof(port));
del++;
continue;
}
pport = &port->next;
}
}
if (del)
sem_post(&self->port_sem);
}
static int jackrack_get_audio( mlt_frame frame, void **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
{
// Get the filter service
mlt_filter filter = mlt_frame_pop_audio( frame );
// Get the filter properties
mlt_properties filter_properties = MLT_FILTER_PROPERTIES( filter );
int jack_frequency = mlt_properties_get_int( filter_properties, "_sample_rate" );
// Get the producer's audio
*format = mlt_audio_float;
mlt_frame_get_audio( frame, buffer, format, &jack_frequency, channels, samples );
// TODO: Deal with sample rate differences
if ( *frequency != jack_frequency )
mlt_log_error( MLT_FILTER_SERVICE( filter ), "mismatching frequencies JACK = %d actual = %d\n",
jack_frequency, *frequency );
*frequency = jack_frequency;
// Initialise Jack ports and connections if needed
if ( mlt_properties_get_int( filter_properties, "_samples" ) == 0 )
mlt_properties_set_int( filter_properties, "_samples", *samples );
// Get the filter-specific properties
jack_ringbuffer_t **output_buffers = mlt_properties_get_data( filter_properties, "output_buffers", NULL );
jack_ringbuffer_t **input_buffers = mlt_properties_get_data( filter_properties, "input_buffers", NULL );
// pthread_mutex_t *output_lock = mlt_properties_get_data( filter_properties, "output_lock", NULL );
// pthread_cond_t *output_ready = mlt_properties_get_data( filter_properties, "output_ready", NULL );
// Process the audio
float *q = (float*) *buffer;
size_t size = *samples * sizeof(float);
int j;
// struct timespec tm = { 0, 0 };
// Write into output ringbuffer
for ( j = 0; j < *channels; j++ )
{
if ( jack_ringbuffer_write_space( output_buffers[j] ) >= size )
jack_ringbuffer_write( output_buffers[j], (char*)( q + j * *samples ), size );
}
// Synchronization phase - wait for signal from Jack process
while ( jack_ringbuffer_read_space( input_buffers[ *channels - 1 ] ) < size ) ;
//pthread_cond_wait( output_ready, output_lock );
// Read from input ringbuffer
for ( j = 0; j < *channels; j++, q++ )
{
if ( jack_ringbuffer_read_space( input_buffers[j] ) >= size )
jack_ringbuffer_read( input_buffers[j], (char*)( q + j * *samples ), size );
}
// help jack_sync() indicate when we are rolling
mlt_position pos = mlt_frame_get_position( frame );
mlt_properties_set_position( filter_properties, "_last_pos", pos );
return 0;
}
static int write_to_ringbuffer(rotter_ringbuffer_t *rb, jack_nframes_t start,
jack_nframes_t nframes)
{
size_t to_write = sizeof(jack_default_audio_sample_t) * nframes;
unsigned int c;
if (nframes <= 0)
return 0;
for (c=0; c < channels; c++)
{
size_t space = jack_ringbuffer_write_space(rb->buffer[c]);
if (space < to_write) {
// Glitch in audio is preferable to a fatal error or ring buffer corruption
rb->overflow = 1;
return 0;
}
}
for (c=0; c < channels; c++)
{
jack_default_audio_sample_t *buf = jack_port_get_buffer(inport[c], nframes);
size_t len = 0;
len = jack_ringbuffer_write(rb->buffer[c], (char*)&buf[start], to_write);
if (len < to_write) {
rotter_fatal("Failed to write to ring buffer.");
return 1;
}
}
// Success
return 0;
}
/*------------------------------------------------------------------------------
* Callback called by JACK when audio is available
*
* Don't do anything too expensive here
* - just shove audio samples in ring buffer
*----------------------------------------------------------------------------*/
int
JackDspSource :: process_callback( jack_nframes_t nframes, void *arg )
{
JackDspSource* self = (JackDspSource*)arg;
size_t to_write = sizeof (jack_default_audio_sample_t) * nframes;
unsigned int c;
// Wait until it is ready
if (self->client == NULL) {
return 0;
}
/* copy data to ringbuffer; one per channel */
for (c=0; c < self->getChannel(); c++) {
char *buf = (char*)jack_port_get_buffer(self->ports[c], nframes);
size_t len = jack_ringbuffer_write(self->rb[c], buf, to_write);
if (len < to_write) {
Reporter::reportEvent( 1, "failed to write to ring ruffer");
return 1;
}
}
// Success
return 0;
}
/**
@brief Write into the ring buffer.
\param src the value to write
*/
void write(Type src){
if(getWriteSpace() <= 0){
//throw error!!!!
return;
}
jack_ringbuffer_write(mRingBufferPtr, (char *)&src, sizeof(Type));
}
void ProduceAudioToBuffer(audioBuffer_t *buffer, int channel, uint8_t *data, int data_size) {
if(buffer != NULL){
jack_ringbuffer_write (buffer->to_audio_buffers[channel], (char*) data, data_size);
normalbuffer++;
printf("NORMAL BUFFER: %d\n",normalbuffer);
return;
}
return;
}
void ProduceSyncToBuffer(audioBuffer_t *buffer, int channel, uint8_t *data, int data_size) {
if(buffer != NULL){
jack_ringbuffer_write (buffer->sync_buffers[channel], (char*) data, data_size);
syncbuffer++;
printf("SYNC BUFFER: %d\n",syncbuffer);
return;
}
return;
}
void AUD_JackDevice::updateRingBuffers()
{
size_t size, temp;
unsigned int samplesize = AUD_SAMPLE_SIZE(m_specs);
unsigned int i, j;
unsigned int channels = m_specs.channels;
sample_t* buffer = m_buffer.getBuffer();
float* deinterleave = m_deinterleavebuf.getBuffer();
jack_transport_state_t state;
jack_position_t position;
pthread_mutex_lock(&m_mixingLock);
while(m_valid)
{
if(m_sync > 1)
{
if(m_syncFunc)
{
state = jack_transport_query(m_client, &position);
m_syncFunc(m_syncFuncData, state != JackTransportStopped, position.frame / (float) m_specs.rate);
}
for(i = 0; i < channels; i++)
jack_ringbuffer_reset(m_ringbuffers[i]);
}
size = jack_ringbuffer_write_space(m_ringbuffers[0]);
for(i = 1; i < channels; i++)
if((temp = jack_ringbuffer_write_space(m_ringbuffers[i])) < size)
size = temp;
while(size > samplesize)
{
size /= samplesize;
mix((data_t*)buffer, size);
for(i = 0; i < channels; i++)
{
for(j = 0; j < size; j++)
deinterleave[i * size + j] = buffer[i + j * channels];
jack_ringbuffer_write(m_ringbuffers[i], (char*)(deinterleave + i * size), size * sizeof(float));
}
size = jack_ringbuffer_write_space(m_ringbuffers[0]);
for(i = 1; i < channels; i++)
if((temp = jack_ringbuffer_write_space(m_ringbuffers[i])) < size)
size = temp;
}
if(m_sync > 1)
{
m_sync = 3;
}
pthread_cond_wait(&m_mixingCondition, &m_mixingLock);
}
pthread_mutex_unlock(&m_mixingLock);
}
void pcap_callback(u_char* args, const struct pcap_pkthdr* packet_header, const u_char* packet)
{
unsigned char* test_stream_id;
struct ethernet_header* eth_header;
uint32_t* mybuf;
uint32_t frame[CHANNELS];
jack_default_audio_sample_t jackframe[CHANNELS];
int cnt;
static int total;
eth_header = (struct ethernet_header*)(packet);
if (0 != memcmp(ETHER_TYPE,eth_header->type,sizeof(eth_header->type))) {
return;
}
test_stream_id = (unsigned char*)(packet + ETHERNET_HEADER_SIZE + SEVENTEEN22_HEADER_PART1_SIZE);
if (0 != memcmp(test_stream_id, stream_id, STREAM_ID_SIZE)) {
return;
}
mybuf = (uint32_t*) (packet + HEADER_SIZE);
for(int i = 0; i < SAMPLES_PER_FRAME * CHANNELS; i+=CHANNELS) {
memcpy(&frame[0], &mybuf[i], sizeof(frame));
for(int j = 0; j < CHANNELS; j++) {
frame[j] = ntohl(frame[j]); /* convert to host-byte order */
frame[j] &= 0x00ffffff; /* ignore leading label */
frame[j] <<= 8; /* left-align remaining PCM-24 sample */
jackframe[j] = ((int32_t)frame[j])/(float)(MAX_SAMPLE_VALUE);
}
if ((cnt = jack_ringbuffer_write_space(ringbuffer)) >= SAMPLE_SIZE * CHANNELS) {
jack_ringbuffer_write(ringbuffer, (void*)&jackframe[0], SAMPLE_SIZE * CHANNELS);
} else {
fprintf(stdout, "Only %i bytes available after %i samples.\n", cnt, total);
}
if (jack_ringbuffer_write_space(ringbuffer) <= SAMPLE_SIZE * CHANNELS * DEFAULT_RINGBUFFER_SIZE / 4) {
/** Ringbuffer has only 25% or less write space available, it's time to tell jackd
to read some data. */
ready = 1;
}
#ifdef LIBSND
sf_writef_float(snd_file, jackframe, 1);
#endif
}
}
static void port_connect_cb(jack_port_id_t port, int registered, void *arg)
{
struct cbox_jack_io_impl *jii = arg;
if (registered)
{
jack_port_t *portobj = jack_port_by_id(jii->client, port);
jack_ringbuffer_write(jii->rb_autoconnect, (char *)&portobj, sizeof(portobj));
}
}
void
jack_ringbuffer_write_exactly ( jack_ringbuffer_t *r , const char *buf , int n )
{
int err = jack_ringbuffer_write ( r , buf , n ) ;
if ( err != n ) {
eprintf ( "%s: error writing ring buffer (%d != %d)\n" ,
__func__ , err , n ) ;
FAILURE ;
}
}
static
void jack_add_ports(midi_stream_t *str)
{
midi_port_t *port;
while (can_pass(sizeof(port), str->jack.new_ports, str->midi.new_ports) && str->jack.nports < MAX_PORTS) {
jack_ringbuffer_read(str->jack.new_ports, (char*)&port, sizeof(port));
str->jack.ports[str->jack.nports++] = port;
port->state = PORT_ADDED_TO_MIDI;
jack_ringbuffer_write(str->midi.new_ports, (char*)&port, sizeof(port));
}
}
int jack_callback (jack_nframes_t nframes, void *arg) {
int jack_bsize = nframes * sizeof(jack_default_audio_sample_t);
const char *jack_b = jack_port_get_buffer(output_port, nframes);
if (jack_ringbuffer_write(ringbuf, (void *) jack_b, jack_bsize) < jack_bsize) {
fprintf(stderr, "buffer underrun!\n");
}
if ( rtmp_i && jack_ringbuffer_read_space(ringbuf) >= (buffer_samples * sizeof(jack_default_audio_sample_t)) ) {
ev_async_send(loop, &async);
}
return 0;
}