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/*
* $Id$
*
* ***** BEGIN LGPL LICENSE BLOCK *****
*
* Copyright 2009 Jörg Hermann Müller
*
* This file is part of AudaSpace.
*
* AudaSpace is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* AudaSpace is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with AudaSpace. If not, see <http://www.gnu.org/licenses/>.
*
* ***** END LGPL LICENSE BLOCK *****
*/
#include "AUD_FloatMixer.h"
#include "AUD_JackDevice.h"
#include "AUD_IReader.h"
#include "AUD_Buffer.h"
#include <stdio.h>
#include <stdlib.h>
#ifdef WITH_JACK
// AUD_XXX this is not realtime suitable!
int AUD_JackDevice::jack_mix(jack_nframes_t length, void *data)
{
AUD_JackDevice* device = (AUD_JackDevice*)data;
int samplesize = AUD_SAMPLE_SIZE(device->m_specs);
if(device->m_buffer->getSize() < samplesize * length)
device->m_buffer->resize(samplesize * length);
device->mix(device->m_buffer->getBuffer(), length);
float* in = (float*) device->m_buffer->getBuffer();
float* out;
int count = device->m_specs.channels;
for(int i = 0; i < count; i++)
{
out = (float*)jack_port_get_buffer(device->m_ports[i], length);
for(int j = 0; j < length; j++)
out[j] = in[j * count + i];
}
return 0;
}
void AUD_JackDevice::jack_shutdown(void *data)
{
AUD_JackDevice* device = (AUD_JackDevice*)data;
device->m_valid = false;
}
AUD_JackDevice::AUD_JackDevice(AUD_Specs specs)
{
if(specs.channels == AUD_CHANNELS_INVALID)
specs.channels = AUD_CHANNELS_STEREO;
// jack uses floats
m_specs = specs;
m_specs.format = AUD_FORMAT_FLOAT32;
jack_options_t options = JackNullOption;
jack_status_t status;
// open client
m_client = jack_client_open("Blender", options, &status);
if(m_client == NULL)
AUD_THROW(AUD_ERROR_JACK);
m_buffer = new AUD_Buffer(); AUD_NEW("buffer");
// set callbacks
jack_set_process_callback(m_client, AUD_JackDevice::jack_mix, this);
jack_on_shutdown(m_client, AUD_JackDevice::jack_shutdown, this);
// register our output channels which are called ports in jack
m_ports = new jack_port_t*[m_specs.channels]; AUD_NEW("jack_port")
try
{
char portname[64];
for(int i = 0; i < m_specs.channels; i++)
{
sprintf(portname, "out %d", i+1);
m_ports[i] = jack_port_register(m_client, portname,
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsOutput, 0);
if(m_ports[i] == NULL)
AUD_THROW(AUD_ERROR_JACK);
}
m_specs.rate = (AUD_SampleRate)jack_get_sample_rate(m_client);
// activate the client
if(jack_activate(m_client))
AUD_THROW(AUD_ERROR_JACK);
}
catch(AUD_Exception e)
{
jack_client_close(m_client);
delete[] m_ports; AUD_DELETE("jack_port")
delete m_buffer; AUD_DELETE("buffer");
throw;
}
const char** ports = jack_get_ports(m_client, NULL, NULL,
JackPortIsPhysical | JackPortIsInput);
if(ports != NULL)
{
for(int i = 0; i < m_specs.channels && ports[i]; i++)
jack_connect(m_client, jack_port_name(m_ports[i]), ports[i]);
free(ports);
}
m_mixer = new AUD_FloatMixer(); AUD_NEW("mixer")
m_mixer->setSpecs(m_specs);
m_valid = true;
create();
}
AUD_JackDevice::~AUD_JackDevice()
{
lock();
if(m_valid)
jack_client_close(m_client);
delete[] m_ports; AUD_DELETE("jack_port")
delete m_buffer; AUD_DELETE("buffer");
unlock();
destroy();
}
void AUD_JackDevice::playing(bool playing)
{
// Do nothing.
}
#endif
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