diff options
Diffstat (limited to 'libjava/classpath/native/jni/midi-alsa/gnu_javax_sound_midi_alsa_AlsaMidiDeviceProvider.c')
| -rw-r--r-- | libjava/classpath/native/jni/midi-alsa/gnu_javax_sound_midi_alsa_AlsaMidiDeviceProvider.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/libjava/classpath/native/jni/midi-alsa/gnu_javax_sound_midi_alsa_AlsaMidiDeviceProvider.c b/libjava/classpath/native/jni/midi-alsa/gnu_javax_sound_midi_alsa_AlsaMidiDeviceProvider.c new file mode 100644 index 00000000000..f740b276a60 --- /dev/null +++ b/libjava/classpath/native/jni/midi-alsa/gnu_javax_sound_midi_alsa_AlsaMidiDeviceProvider.c @@ -0,0 +1,148 @@ +/* gnu_javax_sound_midi_alsa_AlsaMidiDeviceProvider.c + 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 <config.h> +#include <gnu_javax_sound_midi_alsa_AlsaMidiDeviceProvider.h> + +#include <alsa/asoundlib.h> + +static snd_seq_t *seq; + +JNIEXPORT void JNICALL +Java_gnu_javax_sound_midi_alsa_AlsaMidiDeviceProvider_init_1 +(JNIEnv *env __attribute__((unused)), jobject this __attribute__((unused))) +{ + int rc = snd_seq_open (&seq, "default", SND_SEQ_OPEN_DUPLEX, SND_SEQ_NONBLOCK); + if (rc < 0) + abort (); + snd_seq_set_client_name(seq, "gnu.javax.sound.midi.alsa"); +} + +/** + * Return a CLAZZ[] filled with ports matching TYPE. + */ +static jobjectArray +getPortDeviceInfo (JNIEnv *env, unsigned type, const char *clazz) +{ + jobjectArray rarray; + snd_seq_client_info_t *cinfo; + snd_seq_port_info_t *pinfo; + int client; + int count = 0; + jclass icls; + jmethodID mid; + + snd_seq_client_info_alloca(&cinfo); + snd_seq_port_info_alloca(&pinfo); + + /* First, count the number of input devices. */ + snd_seq_client_info_set_client (cinfo, -1); + while (snd_seq_query_next_client (seq, cinfo) >= 0) + { + client = snd_seq_client_info_get_client (cinfo); + if (client == 0) + continue; + snd_seq_port_info_set_client (pinfo, client); + snd_seq_port_info_set_port (pinfo, -1); + while (snd_seq_query_next_port (seq, pinfo) >= 0) + { + if ((snd_seq_port_info_get_capability (pinfo) & type) != type) + continue; + count++; + } + } + + icls = (*env)->FindClass(env, clazz); + mid = (*env)->GetMethodID(env, icls, "<init>", + "(Ljava/lang/String;Ljava/lang/String;JJ)V"); + + rarray = (jobjectArray) (*env)->NewObjectArray(env, count, icls, NULL); + + /* Now, populate our array. */ + count = 0; + snd_seq_client_info_set_client (cinfo, -1); + while (snd_seq_query_next_client (seq, cinfo) >= 0) + { + const char *client_name; + client = snd_seq_client_info_get_client (cinfo); + if (client == 0) + continue; + snd_seq_port_info_set_client (pinfo, client); + snd_seq_port_info_set_port (pinfo, -1); + + client_name = snd_seq_client_info_get_name (cinfo); + + while (snd_seq_query_next_port (seq, pinfo) >= 0) + { + const char *port_name; + + if ((snd_seq_port_info_get_capability (pinfo) & type) != type) + continue; + + port_name = snd_seq_port_info_get_name (pinfo); + + (*env)->SetObjectArrayElement(env, rarray, count, + (*env)->NewObject (env, icls, mid, + (*env)->NewStringUTF (env, client_name), + (*env)->NewStringUTF (env, port_name), + (jlong) snd_seq_port_info_get_client(pinfo), + (jlong) snd_seq_port_info_get_port(pinfo))); + count++; + } + } + + return rarray; +} + +JNIEXPORT jobjectArray JNICALL +Java_gnu_javax_sound_midi_alsa_AlsaMidiDeviceProvider_getInputDeviceInfo_1 + (JNIEnv *env, jobject this __attribute__((unused))) +{ + return getPortDeviceInfo (env, + (SND_SEQ_PORT_CAP_READ | SND_SEQ_PORT_CAP_SUBS_READ), + "gnu/javax/sound/midi/alsa/AlsaMidiDeviceProvider$AlsaInputPortInfo"); +} + +JNIEXPORT jobjectArray JNICALL +Java_gnu_javax_sound_midi_alsa_AlsaMidiDeviceProvider_getOutputDeviceInfo_1 + (JNIEnv *env, jobject this __attribute__((unused))) +{ + return getPortDeviceInfo (env, + (SND_SEQ_PORT_CAP_WRITE | SND_SEQ_PORT_CAP_SUBS_WRITE), + "gnu/javax/sound/midi/alsa/AlsaMidiDeviceProvider$AlsaOutputPortInfo"); +} + |