115 lines
3.9 KiB
C
115 lines
3.9 KiB
C
/* dssi_data.h - DSSI data
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Copyright (C) 2005, 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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#include <stdlib.h>
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#include <dlfcn.h>
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#include <sys/time.h>
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#include <jni.h>
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#include <dssi.h>
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#include <jack/jack.h>
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#include <alsa/asoundlib.h>
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#include <alsa/seq.h>
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#include <stdio.h>
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#include "../classpath/jcl.h"
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/* Specify the size of the circular buffer. It only needs to be big
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enough to hold the events that happen between jack callbacks (~
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1/40th of a second). */
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#define EVENT_BUFFER_SIZE 1024
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/* Every DSSI Synthesizer has one of these associated with it. The
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Java class sees it as a "long" handle. */
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typedef struct
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{
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/* This is a handle to the dlopen'ed .so file containing the DSSI
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synthesizer. */
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void *dlhandle;
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/* The function to call to get the DSS_Descriptor. */
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DSSI_Descriptor_Function fn;
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/* The descriptor for this synthesizer. See the dssi.h system
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header. */
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const DSSI_Descriptor *desc;
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/* We currently open a jack client connection for every
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synthesizer. */
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jack_client_t *jack_client;
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/* We currently only handle stereo jack connections. Output from
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mono synthesizers is sent to both left and right ports. */
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jack_port_t *jack_left_output_port;
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jack_port_t *jack_right_output_port;
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/* We use a circular buffer to hold MIDI events before processing
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them in the jack audio processing callback function. */
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snd_seq_event_t midiEventBuffer[EVENT_BUFFER_SIZE];
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int midiEventReadIndex;
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int midiEventWriteIndex;
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/* This is a handle the synthesizers underlying LADSPA structure.
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See the ladspa.h system header for details. */
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LADSPA_Handle plugin_handle;
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/* These are buffers we pass to the DSSI Synthesizer for
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filling. */
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float *left_buffer;
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float *right_buffer;
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/* The number of input controls for this synth. */
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unsigned control_count;
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/* An array of control values, control_count in length. */
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LADSPA_Data *control_values;
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/* A mapping of MIDI controllers to control values. There are a
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maximum of 128 MIDI controllers. */
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unsigned control_value_map[128];
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/* A mapping of MIDI controllers to LADSPA ports. There are a
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maximum of 128 MIDI controllers. */
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unsigned control_port_map[128];
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/* The sample rate. */
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jack_nframes_t sample_rate;
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} dssi_data;
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