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