1 /*
   2  * Copyright (c) 2002, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 //#define USE_TRACE
  27 //#define USE_ERROR
  28 
  29 
  30 #include <jni.h>
  31 #include <jni_util.h>
  32 #include "SoundDefs.h"
  33 #include "DirectAudio.h"
  34 #include "Utilities.h"
  35 #include "com_sun_media_sound_DirectAudioDeviceProvider.h"
  36 
  37 
  38 //////////////////////////////////////////// DirectAudioDeviceProvider ////////////////////////////////////////////
  39 
  40 int getDirectAudioDeviceDescription(int mixerIndex, DirectAudioDeviceDescription* desc) {
  41     desc->deviceID = 0;
  42     desc->maxSimulLines = 0;
  43     strcpy(desc->name, "Unknown Name");
  44     strcpy(desc->vendor, "Unknown Vendor");
  45     strcpy(desc->description, "Unknown Description");
  46     strcpy(desc->version, "Unknown Version");
  47 #if USE_DAUDIO == TRUE
  48     DAUDIO_GetDirectAudioDeviceDescription(mixerIndex, desc);
  49 #endif // USE_DAUDIO
  50     return TRUE;
  51 }
  52 
  53 JNIEXPORT jint JNICALL Java_com_sun_media_sound_DirectAudioDeviceProvider_nGetNumDevices(JNIEnv *env, jclass cls) {
  54     INT32 numDevices = 0;
  55 
  56     TRACE0("Java_com_sun_media_sound_DirectAudioDeviceProvider_nGetNumDevices.\n");
  57 
  58 #if USE_DAUDIO == TRUE
  59     numDevices = DAUDIO_GetDirectAudioDeviceCount();
  60 #endif // USE_DAUDIO
  61 
  62     TRACE1("Java_com_sun_media_sound_DirectAudioDeviceProvider_nGetNumDevices returning %d.\n", (int) numDevices);
  63 
  64     return (jint)numDevices;
  65 }
  66 
  67 JNIEXPORT jobject JNICALL Java_com_sun_media_sound_DirectAudioDeviceProvider_nNewDirectAudioDeviceInfo
  68     (JNIEnv *env, jclass cls, jint mixerIndex) {
  69 
  70     jclass directAudioDeviceInfoClass;
  71     jmethodID directAudioDeviceInfoConstructor;
  72     DirectAudioDeviceDescription desc;
  73     jobject info = NULL;
  74     jstring name;
  75     jstring vendor;
  76     jstring description;
  77     jstring version;
  78 
  79     TRACE1("Java_com_sun_media_sound_DirectAudioDeviceProvider_nNewDirectAudioDeviceInfo(%d).\n", mixerIndex);
  80 
  81     // retrieve class and constructor of DirectAudioDeviceProvider.DirectAudioDeviceInfo
  82     directAudioDeviceInfoClass = (*env)->FindClass(env, IMPLEMENTATION_PACKAGE_NAME"/DirectAudioDeviceProvider$DirectAudioDeviceInfo");
  83     if (directAudioDeviceInfoClass == NULL) {
  84         ERROR0("Java_com_sun_media_sound_DirectAudioDeviceProvider_nNewDirectAudioDeviceInfo: directAudioDeviceInfoClass is NULL\n");
  85         return NULL;
  86     }
  87     directAudioDeviceInfoConstructor = (*env)->GetMethodID(env, directAudioDeviceInfoClass, "<init>",
  88                   "(IIILjava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V");
  89     if (directAudioDeviceInfoConstructor == NULL) {
  90         ERROR0("Java_com_sun_media_sound_DirectAudioDeviceProvider_nNewDirectAudioDeviceInfo: directAudioDeviceInfoConstructor is NULL\n");
  91         return NULL;
  92     }
  93 
  94     TRACE1("Get description for device %d\n", mixerIndex);
  95 
  96     if (getDirectAudioDeviceDescription(mixerIndex, &desc)) {
  97         // create a new DirectAudioDeviceInfo object and return it
  98         name = (*env)->NewStringUTF(env, desc.name);
  99         CHECK_NULL_RETURN(name, info);
 100         vendor = (*env)->NewStringUTF(env, desc.vendor);
 101         CHECK_NULL_RETURN(vendor, info);
 102         description = (*env)->NewStringUTF(env, desc.description);
 103         CHECK_NULL_RETURN(description, info);
 104         version = (*env)->NewStringUTF(env, desc.version);
 105         CHECK_NULL_RETURN(version, info);
 106         info = (*env)->NewObject(env, directAudioDeviceInfoClass,
 107                                  directAudioDeviceInfoConstructor, mixerIndex,
 108                                  desc.deviceID, desc.maxSimulLines,
 109                                  name, vendor, description, version);
 110     } else {
 111         ERROR1("ERROR: getDirectAudioDeviceDescription(%d, desc) returned FALSE!\n", mixerIndex);
 112     }
 113 
 114     TRACE0("Java_com_sun_media_sound_DirectAudioDeviceProvider_nNewDirectAudioDeviceInfo succeeded.\n");
 115     return info;
 116 }