| /* 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"); |
| } |
| |