diff options
Diffstat (limited to 'libjava/classpath/native/jni/midi-alsa/gnu_javax_sound_midi_alsa_AlsaPortDevice.c')
| -rw-r--r-- | libjava/classpath/native/jni/midi-alsa/gnu_javax_sound_midi_alsa_AlsaPortDevice.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/libjava/classpath/native/jni/midi-alsa/gnu_javax_sound_midi_alsa_AlsaPortDevice.c b/libjava/classpath/native/jni/midi-alsa/gnu_javax_sound_midi_alsa_AlsaPortDevice.c new file mode 100644 index 000000000..d3e4f2b45 --- /dev/null +++ b/libjava/classpath/native/jni/midi-alsa/gnu_javax_sound_midi_alsa_AlsaPortDevice.c @@ -0,0 +1,149 @@ +/* gnu_javax_sound_midi_alsa_AlsaPortDevice.c - Native support + Copyright (C) 2005, 2010 + 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_AlsaPortDevice.h> +#include <unistd.h> + +#include <alsa/asoundlib.h> + +JNIEXPORT void JNICALL +Java_gnu_javax_sound_midi_alsa_AlsaPortDevice_run_1receiver_1thread_1 + (JNIEnv *env, jobject this __attribute__((unused)), + jlong client, jlong port, jobject receiver) +{ + snd_seq_port_info_t *pinfo, *sinfo; + snd_seq_port_subscribe_t *subs; + snd_seq_addr_t sender, dest; + snd_seq_t *seq; + + snd_seq_port_info_alloca (&pinfo); + snd_seq_port_info_alloca (&sinfo); + snd_seq_port_subscribe_alloca (&subs); + + snd_seq_open (&seq, "default", SND_SEQ_OPEN_DUPLEX, SND_SEQ_NONBLOCK); + + snd_seq_port_info_set_capability (pinfo, SND_SEQ_PORT_CAP_WRITE); + snd_seq_port_info_set_type (pinfo, SND_SEQ_PORT_TYPE_MIDI_GENERIC); + + snd_seq_create_port (seq, pinfo); + + sender.client = (int) client; + sender.port = (int) port; + dest.client = snd_seq_port_info_get_client(pinfo); + dest.port = snd_seq_port_info_get_port(pinfo); + + snd_seq_port_subscribe_set_sender (subs, &sender); + snd_seq_port_subscribe_set_dest (subs, &dest); + snd_seq_subscribe_port(seq, subs); + + { + int npfd; + struct pollfd *pfd; + jclass smcls, rcls; + jmethodID sminit, rsend; + jbyteArray mba; + jbyte *ba; + jobject msg; + jlong jtimestamp; + + npfd = snd_seq_poll_descriptors_count (seq, POLLIN); + pfd = (struct pollfd *) alloca (npfd * sizeof (struct pollfd)); + snd_seq_poll_descriptors (seq, pfd, npfd, POLLIN); + + smcls = (*env)->FindClass(env, "javax/sound/midi/ShortMessage"); + sminit = (*env)->GetMethodID(env, smcls, "<init>", "([B)V"); + + rcls = (*env)->FindClass(env, "javax/sound/midi/Receiver"); + rsend = (*env)->GetMethodID(env, rcls, "send", "(Ljavax/sound/midi/MidiMessage;J)V"); + + while (1) + { + if (poll (pfd, npfd, 100000) > 0) + { + snd_seq_event_t *ev; + + do + { + snd_seq_event_input (seq, &ev); + + if ((ev->flags & SND_SEQ_TIME_STAMP_MASK) == SND_SEQ_TIME_STAMP_TICK) + jtimestamp = (jlong) ev->time.tick; + else + jtimestamp = (jlong) ev->time.time.tv_sec * (jlong) 1000000000 + + (jlong) ev->time.time.tv_nsec; + + switch (ev->type) + { + case SND_SEQ_EVENT_NOTEON: + mba = (*env)->NewByteArray (env, 3); + ba = (*env)->GetByteArrayElements (env, mba, 0); + ba[0] = 0x90 + ev->data.control.channel; + ba[1] = ev->data.note.note; + ba[2] = ev->data.note.velocity; + (*env)->ReleaseByteArrayElements (env, mba, ba, 0); + msg = (*env)->NewObject(env, smcls, sminit, mba); + (*env)->CallObjectMethod(env, receiver, + rsend, msg, jtimestamp); + break; + + case SND_SEQ_EVENT_CONTROLLER: + mba = (*env)->NewByteArray (env, 3); + ba = (*env)->GetByteArrayElements (env, mba, 0); + ba[0] = 0xB0 + ev->data.control.channel; + ba[1] = ev->data.control.param; + ba[2] = ev->data.control.value; + (*env)->ReleaseByteArrayElements (env, mba, ba, 0); + msg = (*env)->NewObject(env, smcls, sminit, mba); + (*env)->CallObjectMethod(env, receiver, + rsend, msg, jtimestamp); + break; + + default: + printf ("UNKNOWN EVENT 0x%x\n", ev->type); + break; + } + + snd_seq_free_event(ev); + } + while (snd_seq_event_input_pending (seq, 0) > 0); + } + } + } +} |