/* dssi_data.h - DSSI data Copyright (C) 2005 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath 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 General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version. */ #include #include #include #include #include #include #include #include #include #include "target_native.h" #include "target_native_misc.h" #include "../classpath/jcl.h" /* Specify the size of the circular buffer. It only needs to be big enough to hold the events that happen between jack callbacks (~ 1/40th of a second). */ #define EVENT_BUFFER_SIZE 1024 /* Helper macros for going between pointers and jlongs. */ #define JLONG_TO_PTR(T,P) ((T *)(long)P) #define PTR_TO_JLONG(P) ((jlong)(long)P) /* Every DSSI Synthesizer has one of these associated with it. The Java class sees it as a "long" handle. */ typedef struct { /* This is a handle to the dlopen'ed .so file containing the DSSI synthesizer. */ void *dlhandle; /* The function to call to get the DSS_Descriptor. */ DSSI_Descriptor_Function fn; /* The descriptor for this synthesizer. See the dssi.h system header. */ const DSSI_Descriptor *desc; /* We currently open a jack client connection for every synthesizer. */ jack_client_t *jack_client; /* We currently only handle stereo jack connections. Output from mono synthesizers is sent to both left and right ports. */ jack_port_t *jack_left_output_port; jack_port_t *jack_right_output_port; /* We use a circular buffer to hold MIDI events before processing them in the jack audio processing callback function. */ snd_seq_event_t midiEventBuffer[EVENT_BUFFER_SIZE]; int midiEventReadIndex; int midiEventWriteIndex; /* This is a handle the synthesizers underlying LADSPA structure. See the ladspa.h system header for details. */ LADSPA_Handle plugin_handle; /* These are buffers we pass to the DSSI Synthesizer for filling. */ float *left_buffer; float *right_buffer; /* The number of input controls for this synth. */ unsigned control_count; /* An array of control values, control_count in length. */ LADSPA_Data *control_values; /* A mapping of MIDI controllers to control values. There are a maximum of 128 MIDI controllers. */ unsigned control_value_map[128]; /* A mapping of MIDI controllers to LADSPA ports. There are a maximum of 128 MIDI controllers. */ unsigned control_port_map[128]; /* The sample rate. */ jack_nframes_t sample_rate; } dssi_data;