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Java example source code file (DirectAudioDeviceProvider.c)
The DirectAudioDeviceProvider.c Java example source code/* * Copyright (c) 2002, 2007, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ //#define USE_TRACE //#define USE_ERROR #include <jni.h> #include "SoundDefs.h" #include "DirectAudio.h" #include "Utilities.h" #include "com_sun_media_sound_DirectAudioDeviceProvider.h" //////////////////////////////////////////// DirectAudioDeviceProvider //////////////////////////////////////////// int getDirectAudioDeviceDescription(int mixerIndex, DirectAudioDeviceDescription* desc) { desc->deviceID = 0; desc->maxSimulLines = 0; strcpy(desc->name, "Unknown Name"); strcpy(desc->vendor, "Unknown Vendor"); strcpy(desc->description, "Unknown Description"); strcpy(desc->version, "Unknown Version"); #if USE_DAUDIO == TRUE DAUDIO_GetDirectAudioDeviceDescription(mixerIndex, desc); #endif // USE_DAUDIO return TRUE; } JNIEXPORT jint JNICALL Java_com_sun_media_sound_DirectAudioDeviceProvider_nGetNumDevices(JNIEnv *env, jclass cls) { INT32 numDevices = 0; TRACE0("Java_com_sun_media_sound_DirectAudioDeviceProvider_nGetNumDevices.\n"); #if USE_DAUDIO == TRUE numDevices = DAUDIO_GetDirectAudioDeviceCount(); #endif // USE_DAUDIO TRACE1("Java_com_sun_media_sound_DirectAudioDeviceProvider_nGetNumDevices returning %d.\n", (int) numDevices); return (jint)numDevices; } JNIEXPORT jobject JNICALL Java_com_sun_media_sound_DirectAudioDeviceProvider_nNewDirectAudioDeviceInfo (JNIEnv *env, jclass cls, jint mixerIndex) { jclass directAudioDeviceInfoClass; jmethodID directAudioDeviceInfoConstructor; DirectAudioDeviceDescription desc; jobject info = NULL; TRACE1("Java_com_sun_media_sound_DirectAudioDeviceProvider_nNewDirectAudioDeviceInfo(%d).\n", mixerIndex); // retrieve class and constructor of DirectAudioDeviceProvider.DirectAudioDeviceInfo directAudioDeviceInfoClass = (*env)->FindClass(env, IMPLEMENTATION_PACKAGE_NAME"/DirectAudioDeviceProvider$DirectAudioDeviceInfo"); if (directAudioDeviceInfoClass == NULL) { ERROR0("Java_com_sun_media_sound_DirectAudioDeviceProvider_nNewDirectAudioDeviceInfo: directAudioDeviceInfoClass is NULL\n"); return NULL; } directAudioDeviceInfoConstructor = (*env)->GetMethodID(env, directAudioDeviceInfoClass, "<init>", "(IIILjava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V"); if (directAudioDeviceInfoConstructor == NULL) { ERROR0("Java_com_sun_media_sound_DirectAudioDeviceProvider_nNewDirectAudioDeviceInfo: directAudioDeviceInfoConstructor is NULL\n"); return NULL; } TRACE1("Get description for device %d\n", mixerIndex); if (getDirectAudioDeviceDescription(mixerIndex, &desc)) { // create a new DirectAudioDeviceInfo object and return it info = (*env)->NewObject(env, directAudioDeviceInfoClass, directAudioDeviceInfoConstructor, mixerIndex, desc.deviceID, desc.maxSimulLines, (*env)->NewStringUTF(env, desc.name), (*env)->NewStringUTF(env, desc.vendor), (*env)->NewStringUTF(env, desc.description), (*env)->NewStringUTF(env, desc.version)); } else { ERROR1("ERROR: getDirectAudioDeviceDescription(%d, desc) returned FALSE!\n", mixerIndex); } TRACE0("Java_com_sun_media_sound_DirectAudioDeviceProvider_nNewDirectAudioDeviceInfo succeeded.\n"); return info; } Other Java examples (source code examples)Here is a short list of links related to this Java DirectAudioDeviceProvider.c source code file: |
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