Added jack audio support, building with cmake only currently, feel free to add scons and maybe cmake.

1 files changed, 149 insertions, 0 deletions

diff --git a/intern/audaspace/jack/AUD_JackDevice.cpp b/intern/audaspace/jack/AUD_JackDevice.cpp
new file mode 100644
index 00000000000..02095caab74
--- /dev/null
+++ b/intern/audaspace/jack/AUD_JackDevice.cpp
@@ -0,0 +1,149 @@
+/*
+ * $Id: AUD_SDLDevice.cpp 22328 2009-08-09 23:23:19Z gsrb3d $
+ *
+ * ***** 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>
+
+// 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.
+}