libjava/classpath/native/jni/midi-dssi/gnu_javax_sound_midi_dssi_DSSIMidiDeviceProvider.c

   1 /* gnu_javax_sound_midi_dssi_DSSIMidiDeviceProvider.c - DSSI Provider
   2    Copyright (C) 2005 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38 #include <config.h>
  39 #include <gnu_javax_sound_midi_dssi_DSSIMidiDeviceProvider.h>
  40
  41 #include "dssi_data.h"
  42
  43 void
  44 Java_gnu_javax_sound_midi_dssi_DSSIMidiDeviceProvider_dlclose_1
  45   (JNIEnv *env, jclass clazz __attribute__((unused)), jlong sohandle)
  46 {
  47   dssi_data *data = (dssi_data *) (long) sohandle;
  48   dlclose (data->dlhandle);
  49   JCL_free (env, data);
  50 }
  51
  52 jlong
  53 Java_gnu_javax_sound_midi_dssi_DSSIMidiDeviceProvider_dlopen_1
  54   (JNIEnv *env, jclass clazz __attribute__((unused)), jstring name)
  55 {
  56   const char *filename;
  57   void *handle;
  58   DSSI_Descriptor_Function fn;
  59   dssi_data *data = 0;
  60
  61   filename = JCL_jstring_to_cstring (env, name);
  62   if (filename == NULL)
  63     return (0);
  64
  65   handle = dlopen(filename, RTLD_NOW);
  66
  67   if (handle == 0)
  68     goto done;
  69
  70   fn = (DSSI_Descriptor_Function) dlsym(handle, "dssi_descriptor");
  71
  72   if (fn == 0)
  73     {
  74       dlclose(handle);
  75       goto done;
  76     }
  77
  78   data = (dssi_data *) JCL_malloc(env, sizeof(dssi_data));
  79   data->dlhandle = handle;
  80   data->fn = fn;
  81   data->midiEventReadIndex = 0;
  82   data->midiEventWriteIndex = 0;
  83
  84  done:
  85   JCL_free_cstring (env, name, filename);
  86   return PTR_TO_JLONG(data);
  87 }
  88
  89 jlong
  90 Java_gnu_javax_sound_midi_dssi_DSSIMidiDeviceProvider_getDSSIHandle_1
  91   (JNIEnv *env __attribute__((unused)),
  92    jclass clazz __attribute__((unused)), jlong handle, jlong index)
  93 {
  94   dssi_data *data = JLONG_TO_PTR(dssi_data,handle);
  95   data->desc = (data->fn)(index);
  96   return PTR_TO_JLONG(data->desc);
  97 }
  98
  99 jstring
 100 Java_gnu_javax_sound_midi_dssi_DSSIMidiDeviceProvider_getDSSIName_1
 101   (JNIEnv *env, jclass clazz __attribute__((unused)), jlong handle)
 102 {
 103   DSSI_Descriptor *desc = JLONG_TO_PTR(DSSI_Descriptor,handle);
 104   const char *str = desc->LADSPA_Plugin->Name;
 105
 106   return (*env)->NewStringUTF (env, str);
 107 }
 108
 109 jstring
 110 Java_gnu_javax_sound_midi_dssi_DSSIMidiDeviceProvider_getDSSICopyright_1
 111   (JNIEnv *env, jclass clazz __attribute__((unused)), jlong handle)
 112 {
 113   DSSI_Descriptor *desc = JLONG_TO_PTR(DSSI_Descriptor,handle);
 114   const char *str = desc->LADSPA_Plugin->Copyright;
 115
 116   return (*env)->NewStringUTF (env, str);
 117 }
 118
 119 jstring
 120 Java_gnu_javax_sound_midi_dssi_DSSIMidiDeviceProvider_getDSSIVendor_1
 121   (JNIEnv *env, jclass clazz __attribute__((unused)), jlong handle)
 122 {
 123   DSSI_Descriptor *desc = JLONG_TO_PTR(DSSI_Descriptor,handle);
 124   const char *str = desc->LADSPA_Plugin->Maker;
 125
 126   return (*env)->NewStringUTF (env, str);
 127 }
 128
 129 jstring
 130 Java_gnu_javax_sound_midi_dssi_DSSIMidiDeviceProvider_getDSSILabel_1
 131   (JNIEnv *env, jclass clazz __attribute__((unused)), jlong handle)
 132 {
 133   DSSI_Descriptor *desc = JLONG_TO_PTR(DSSI_Descriptor,handle);
 134   const char *str = desc->LADSPA_Plugin->Label;
 135
 136   return (*env)->NewStringUTF (env, str);
 137 }
 138
 139