// Could we get iph-based instruments support sample-exact models by using a
// frame-length of 1 while rendering?
void sf2Instrument::play( sampleFrame * _working_buffer )
{
const fpp_t frames = engine::mixer()->framesPerPeriod();
m_synthMutex.lock();
const int currentMidiPitch = instrumentTrack()->midiPitch();
if( m_lastMidiPitch != currentMidiPitch )
{
m_lastMidiPitch = currentMidiPitch;
fluid_synth_pitch_bend( m_synth, m_channel, m_lastMidiPitch );
}
const int currentMidiPitchRange = instrumentTrack()->midiPitchRange();
if( m_lastMidiPitchRange != currentMidiPitchRange )
{
m_lastMidiPitchRange = currentMidiPitchRange;
fluid_synth_pitch_wheel_sens( m_synth, m_channel, m_lastMidiPitchRange );
}
if( m_internalSampleRate < engine::mixer()->processingSampleRate() &&
m_srcState != NULL )
{
const fpp_t f = frames * m_internalSampleRate / engine::mixer()->processingSampleRate();
#ifdef __GNUC__
sampleFrame tmp[f];
#else
sampleFrame * tmp = new sampleFrame[f];
#endif
fluid_synth_write_float( m_synth, f, tmp, 0, 2, tmp, 1, 2 );
SRC_DATA src_data;
src_data.data_in = tmp[0];
src_data.data_out = _working_buffer[0];
src_data.input_frames = f;
src_data.output_frames = frames;
src_data.src_ratio = (double) frames / f;
src_data.end_of_input = 0;
int error = src_process( m_srcState, &src_data );
#ifndef __GNUC__
delete[] tmp;
#endif
if( error )
{
qCritical( "sf2Instrument: error while resampling: %s", src_strerror( error ) );
}
if( src_data.output_frames_gen > frames )
{
qCritical( "sf2Instrument: not enough frames: %ld / %d", src_data.output_frames_gen, frames );
}
}
else
{
fluid_synth_write_float( m_synth, frames, _working_buffer, 0, 2, _working_buffer, 1, 2 );
}
m_synthMutex.unlock();
instrumentTrack()->processAudioBuffer( _working_buffer, frames, NULL );
}
/* PortAudio callback
* fluid_portaudio_run
*/
static int
fluid_portaudio_run (const void *input, void *output, unsigned long frameCount,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags, void *userData)
{
fluid_portaudio_driver_t *dev = (fluid_portaudio_driver_t *)userData;
if (dev->callback) {
float* left = dev->buffers[0];
float* right = dev->buffers[1];
int i, r, l;
long len = frameCount;
float* buffer = (float *)output;
// callback fills dev->buffers
(*dev->callback)(dev->data, len, 0, NULL, 2, dev->buffers);
bzero(buffer, dev->chansOpen*len*sizeof(float));
for (i = 0, l = dev->chanL, r = dev->chanR; i < len; i++, l += dev->chansOpen, r += dev->chansOpen) {
buffer[l] = left[i];
buffer[r] = right[i];
}
} else
/* it's as simple as that: */
fluid_synth_write_float ((fluid_synth_t *)dev->data, frameCount, output, dev->chanL, dev->chansOpen, output, dev->chanR, dev->chansOpen);
return 0;
}
OSStatus
fluid_core_audio_callback ( void *data,
AudioUnitRenderActionFlags *ioActionFlags,
const AudioTimeStamp *inTimeStamp,
UInt32 inBusNumber,
UInt32 inNumberFrames,
AudioBufferList *ioData)
{
int i, k;
fluid_core_audio_driver_t* dev = (fluid_core_audio_driver_t*) data;
int len = inNumberFrames;
float* buffer = ioData->mBuffers[0].mData;
if (dev->callback)
{
float* left = dev->buffers[0];
float* right = dev->buffers[1];
(*dev->callback)(dev->data, len, 0, NULL, 2, dev->buffers);
for (i = 0, k = 0; i < len; i++) {
buffer[k++] = left[i];
buffer[k++] = right[i];
}
}
else fluid_synth_write_float((fluid_synth_t*) dev->data, len, buffer, 0, 2,
buffer, 1, 2);
return noErr;
}
int audio(CSOUND *csound) {
#pragma omp critical (critical_section_fluid_all_out)
{
uint32_t offset = opds.insdshead->ksmps_offset;
uint32_t early = opds.insdshead->ksmps_no_end;
if (UNLIKELY(offset)) {
memset(aLeftOut, '\0', offset*sizeof(MYFLT));
memset(aRightOut, '\0', offset*sizeof(MYFLT));
}
if (UNLIKELY(early)) {
ksmps -= early;
memset(&aLeftOut[ksmps], '\0', early*sizeof(MYFLT));
memset(&aRightOut[ksmps], '\0', early*sizeof(MYFLT));
}
std::vector<fluid_synth_t *> &fluidSynths =
getFluidSynthsForCsoundInstances()[csound];
for (frame = offset; frame < ksmps; frame++) {
aLeftOut[frame] = FL(0.0);
aRightOut[frame] = FL(0.0);
for (size_t i = 0, n = fluidSynths.size(); i < n; i++) {
fluid_synth_t *fluidSynth = fluidSynths[i];
leftSample = FL(0.0);
rightSample = FL(0.0);
fluid_synth_write_float(fluidSynth, 1, &leftSample, 0, 1,
&rightSample, 0, 1);
aLeftOut[frame] += (MYFLT) leftSample /* * csound->e0dbfs */;
aRightOut[frame] += (MYFLT) rightSample /* * csound->e0dbfs */;
}
}
}
return OK;
}
int audio(CSOUND *csound) {
#pragma omp critical (critical_section_fluid_out)
{
uint32_t offset = opds.insdshead->ksmps_offset;
uint32_t early = opds.insdshead->ksmps_no_end;
if (UNLIKELY(offset)) {
memset(aLeftOut, '\0', offset*sizeof(MYFLT));
memset(aRightOut, '\0', offset*sizeof(MYFLT));
}
if (UNLIKELY(early)) {
ksmps -= early;
memset(&aLeftOut[ksmps], '\0', early*sizeof(MYFLT));
memset(&aRightOut[ksmps], '\0', early*sizeof(MYFLT));
}
for (frame = offset; frame < ksmps; frame++) {
leftSample = 0.0f;
rightSample = 0.0f;
fluid_synth_write_float(fluidSynth, 1, &leftSample, 0, 1,
&rightSample, 0, 1);
aLeftOut[frame] = leftSample /* * csound->e0dbfs */;
aRightOut[frame] = rightSample /* * csound->e0dbfs */;
}
}
return OK;
}
static void RT_process(SoundPlugin *plugin, int64_t time, int num_frames, float **inputs, float **outputs){
Data *data = (Data*)plugin->data;
//data =NULL; // crashreporter test.
//printf("telling sequencer that it is time %d\n",(int)data->time);
fluid_sequencer_process(data->sequencer, get_fluidsynth_time(data,data->time));
data->time += num_frames;
// What's the difference between fluid_synth_write_float and fluid_synth_nwrite_float? Sounds to me like they produce exactly the same sound.
#if 0
if(fluid_synth_write_float(data->synth,num_frames,outputs[0],0,1,outputs[1],0,1)==FLUID_FAILED)
printf("fluid_synth_write_float failed\n");
#else
if(fluid_synth_nwrite_float(data->synth,num_frames, &outputs[0], &outputs[1], NULL, NULL)==FLUID_FAILED)
printf("fluid_synth_write_float failed\n");
#endif
if(data->new_data != NULL){
RT_fade_out(outputs[0],num_frames);
RT_fade_out(outputs[1],num_frames);
plugin->data = data->new_data; // hmm.
data->new_data = NULL;
RSEMAPHORE_signal(data->signal_from_RT,1);
}
}
t_int *soundfonts_perform(t_int *input)
{
t_soundfonts *instance = (t_soundfonts *)(input[1]);
t_sample *outL = (t_sample *)(input[2]);
t_sample *outR = (t_sample *)(input[3]);
int n = (int)(input[4]);
fluid_synth_write_float(instance->synth, n, outL, 0, 1, outR, 0, 1);
return input + 5;
}
void sf2Instrument::renderFrames( f_cnt_t frames, sampleFrame * buf )
{
m_synthMutex.lock();
if( m_internalSampleRate < Engine::mixer()->processingSampleRate() &&
m_srcState != NULL )
{
const fpp_t f = frames * m_internalSampleRate / Engine::mixer()->processingSampleRate();
#ifdef __GNUC__
sampleFrame tmp[f];
#else
sampleFrame * tmp = new sampleFrame[f];
#endif
fluid_synth_write_float( m_synth, f, tmp, 0, 2, tmp, 1, 2 );
SRC_DATA src_data;
src_data.data_in = (float *)tmp;
src_data.data_out = (float *)buf;
src_data.input_frames = f;
src_data.output_frames = frames;
src_data.src_ratio = (double) frames / f;
src_data.end_of_input = 0;
int error = src_process( m_srcState, &src_data );
#ifndef __GNUC__
delete[] tmp;
#endif
if( error )
{
qCritical( "sf2Instrument: error while resampling: %s", src_strerror( error ) );
}
if( src_data.output_frames_gen > frames )
{
qCritical( "sf2Instrument: not enough frames: %ld / %d", src_data.output_frames_gen, frames );
}
}
else
{
fluid_synth_write_float( m_synth, frames, buf, 0, 2, buf, 1, 2 );
}
m_synthMutex.unlock();
}
void ISynth::process(unsigned /*pos*/, float** ports, int offset, int n)
{
if (!_busy) {
/*
//
// get and process all pending events from the
// synthesizer GUI
//
while (gui->fifoSize())
processEvent(gui->readEvent());
*/
fluid_synth_write_float(_fluidsynth, n, ports[0],
offset, 1, ports[1], offset, 1);
}
// printf("%f %f\n", *ports[0], *(ports[0]+1));
}
static GstFlowReturn
produce_samples (GstFluidDec * fluiddec, GstClockTime pts, guint64 sample)
{
GstClockTime duration, timestamp;
guint64 samples, offset;
GstMapInfo info;
GstBuffer *outbuf;
samples = sample - fluiddec->last_sample;
duration = pts - fluiddec->last_pts;
offset = fluiddec->last_sample;
timestamp = fluiddec->last_pts;
fluiddec->last_pts = pts;
fluiddec->last_sample = sample;
if (samples == 0)
return GST_FLOW_OK;
GST_DEBUG_OBJECT (fluiddec, "duration %" GST_TIME_FORMAT
", samples %" G_GUINT64_FORMAT, GST_TIME_ARGS (duration), samples);
outbuf = gst_buffer_new_allocate (NULL, samples * FLUID_DEC_BPS, NULL);
gst_buffer_map (outbuf, &info, GST_MAP_WRITE);
fluid_synth_write_float (fluiddec->synth, samples, info.data, 0, 2,
info.data, 1, 2);
gst_buffer_unmap (outbuf, &info);
GST_BUFFER_DTS (outbuf) = timestamp;
GST_BUFFER_PTS (outbuf) = timestamp;
GST_BUFFER_DURATION (outbuf) = duration;
GST_BUFFER_OFFSET (outbuf) = offset;
GST_BUFFER_OFFSET_END (outbuf) = offset + samples;
if (fluiddec->discont) {
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
fluiddec->discont = FALSE;
}
return gst_pad_push (fluiddec->srcpad, outbuf);
}
static block_t *DecodeBlock (decoder_t *p_dec, block_t **pp_block)
{
block_t *p_block;
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_out = NULL;
if (pp_block == NULL)
return NULL;
p_block = *pp_block;
if (p_block == NULL)
return NULL;
*pp_block = NULL;
if (p_block->i_pts > VLC_TS_INVALID && !date_Get (&p_sys->end_date))
date_Set (&p_sys->end_date, p_block->i_pts);
else
if (p_block->i_pts < date_Get (&p_sys->end_date))
{
msg_Warn (p_dec, "MIDI message in the past?");
goto drop;
}
if (p_block->i_buffer < 1)
goto drop;
uint8_t event = p_block->p_buffer[0];
uint8_t channel = p_block->p_buffer[0] & 0xf;
event &= 0xF0;
if (event == 0xF0)
switch (channel)
{
case 0:
if (p_block->p_buffer[p_block->i_buffer - 1] != 0xF7)
{
case 7:
msg_Warn (p_dec, "fragmented SysEx not implemented");
goto drop;
}
fluid_synth_sysex (p_sys->synth, (char *)p_block->p_buffer + 1,
p_block->i_buffer - 2, NULL, NULL, NULL, 0);
break;
case 0xF:
fluid_synth_system_reset (p_sys->synth);
break;
}
uint8_t p1 = (p_block->i_buffer > 1) ? (p_block->p_buffer[1] & 0x7f) : 0;
uint8_t p2 = (p_block->i_buffer > 2) ? (p_block->p_buffer[2] & 0x7f) : 0;
switch (event & 0xF0)
{
case 0x80:
fluid_synth_noteoff (p_sys->synth, channel, p1);
break;
case 0x90:
fluid_synth_noteon (p_sys->synth, channel, p1, p2);
break;
/*case 0xA0: note aftertouch not implemented */
case 0xB0:
fluid_synth_cc (p_sys->synth, channel, p1, p2);
break;
case 0xC0:
fluid_synth_program_change (p_sys->synth, channel, p1);
break;
case 0xD0:
fluid_synth_channel_pressure (p_sys->synth, channel, p1);
break;
case 0xE0:
fluid_synth_pitch_bend (p_sys->synth, channel, (p2 << 7) | p1);
break;
}
unsigned samples =
(p_block->i_pts - date_Get (&p_sys->end_date)) * 441 / 10000;
if (samples == 0)
goto drop;
p_out = decoder_NewAudioBuffer (p_dec, samples);
if (p_out == NULL)
goto drop;
p_out->i_pts = date_Get (&p_sys->end_date );
p_out->i_length = date_Increment (&p_sys->end_date, samples)
- p_out->i_pts;
fluid_synth_write_float (p_sys->synth, samples, p_out->p_buffer, 0, 2,
p_out->p_buffer, 1, 2);
drop:
block_Release (p_block);
return p_out;
}
static aout_buffer_t *DecodeBlock (decoder_t *p_dec, block_t **pp_block)
{
block_t *p_block;
decoder_sys_t *p_sys = p_dec->p_sys;
aout_buffer_t *p_out = NULL;
if (pp_block == NULL)
return NULL;
p_block = *pp_block;
if (p_block == NULL)
return NULL;
*pp_block = NULL;
if (p_block->i_pts && !date_Get (&p_sys->end_date))
date_Set (&p_sys->end_date, p_block->i_pts);
else
if (p_block->i_pts < date_Get (&p_sys->end_date))
{
msg_Warn (p_dec, "MIDI message in the past?");
goto drop;
}
if (p_block->i_buffer < 1)
goto drop;
uint8_t channel = p_block->p_buffer[0] & 0xf;
uint8_t p1 = (p_block->i_buffer > 1) ? (p_block->p_buffer[1] & 0x7f) : 0;
uint8_t p2 = (p_block->i_buffer > 2) ? (p_block->p_buffer[2] & 0x7f) : 0;
switch (p_block->p_buffer[0] & 0xf0)
{
case 0x80:
fluid_synth_noteoff (p_sys->synth, channel, p1);
break;
case 0x90:
fluid_synth_noteon (p_sys->synth, channel, p1, p2);
break;
case 0xB0:
fluid_synth_cc (p_sys->synth, channel, p1, p2);
break;
case 0xC0:
fluid_synth_program_change (p_sys->synth, channel, p1);
break;
case 0xE0:
fluid_synth_pitch_bend (p_sys->synth, channel, (p1 << 7) | p2);
break;
}
unsigned samples =
(p_block->i_pts - date_Get (&p_sys->end_date)) * 441 / 10000;
if (samples == 0)
return NULL;
p_out = decoder_NewAudioBuffer (p_dec, samples);
if (p_out == NULL)
goto drop;
p_out->i_pts = date_Get (&p_sys->end_date );
p_out->i_length = date_Increment (&p_sys->end_date, samples)
- p_out->i_pts;
if (!p_sys->fixed)
fluid_synth_write_float (p_sys->synth, samples,
p_out->p_buffer, 0, 2,
p_out->p_buffer, 1, 2);
else
fluid_synth_write_s16 (p_sys->synth, samples,
(int16_t *)p_out->p_buffer, 0, 2,
(int16_t *)p_out->p_buffer, 1, 2);
drop:
block_Release (p_block);
return p_out;
}
void WriteSamples(ALuint count, float *buffer)
{ fluid_synth_write_float(fluidSynth, count, buffer, 0, 2, buffer, 1, 2); }
// for Chugins extending UGen
void tick( SAMPLE *in, SAMPLE *out )
{
// default: this passes whatever input is patched into Chugin
fluid_synth_write_float(m_synth, 1, out, 0, 0, out+1, 0, 0);
}
void
fluidsynth_render_audio (unsigned int nframes, float *left_channel, float *right_channel)
{
//printf("\nsynth == %d, nframes == %d, left_channel == %f right_channel == %f\n",synth, nframes, left_channel, right_channel);
fluid_synth_write_float (synth, nframes, left_channel, 0, 1, right_channel, 0, 1);
}