1 /*
2 **
3 ** Copyright 2008, The Android Open Source Project
4 **
5 ** Licensed under the Apache License, Version 2.0 (the "License");
6 ** you may not use this file except in compliance with the License.
7 ** You may obtain a copy of the License at
8 **
9 ** http://www.apache.org/licenses/LICENSE-2.0
10 **
11 ** Unless required by applicable law or agreed to in writing, software
12 ** distributed under the License is distributed on an "AS IS" BASIS,
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 ** See the License for the specific language governing permissions and
15 ** limitations under the License.
16 */
17
18 #define LOG_TAG "ToneGenerator"
19
20 #include <stdio.h>
21 #include <unistd.h>
22 #include <fcntl.h>
23
24 #include <jni.h>
25 #include <JNIHelp.h>
26 #include "core_jni_helpers.h"
27
28 #include <utils/Log.h>
29 #include <media/AudioSystem.h>
30 #include <media/ToneGenerator.h>
31
32 // ----------------------------------------------------------------------------
33
34 using namespace android;
35
36 struct fields_t {
37 jfieldID context;
38 };
39 static fields_t fields;
40
android_media_ToneGenerator_startTone(JNIEnv * env,jobject thiz,jint toneType,jint durationMs)41 static jboolean android_media_ToneGenerator_startTone(JNIEnv *env, jobject thiz, jint toneType, jint durationMs) {
42 ALOGV("android_media_ToneGenerator_startTone: %p", thiz);
43
44 ToneGenerator *lpToneGen = (ToneGenerator *)env->GetLongField(thiz,
45 fields.context);
46 if (lpToneGen == NULL) {
47 jniThrowRuntimeException(env, "Method called after release()");
48 return false;
49 }
50
51 return lpToneGen->startTone((ToneGenerator::tone_type) toneType, durationMs);
52 }
53
android_media_ToneGenerator_stopTone(JNIEnv * env,jobject thiz)54 static void android_media_ToneGenerator_stopTone(JNIEnv *env, jobject thiz) {
55 ALOGV("android_media_ToneGenerator_stopTone: %p", thiz);
56
57 ToneGenerator *lpToneGen = (ToneGenerator *)env->GetLongField(thiz,
58 fields.context);
59
60 ALOGV("ToneGenerator lpToneGen: %p", lpToneGen);
61 if (lpToneGen == NULL) {
62 jniThrowRuntimeException(env, "Method called after release()");
63 return;
64 }
65 lpToneGen->stopTone();
66 }
67
android_media_ToneGenerator_getAudioSessionId(JNIEnv * env,jobject thiz)68 static jint android_media_ToneGenerator_getAudioSessionId(JNIEnv *env, jobject thiz) {
69 ToneGenerator *lpToneGen = (ToneGenerator *)env->GetLongField(thiz,
70 fields.context);
71 if (lpToneGen == NULL) {
72 jniThrowRuntimeException(env, "Method called after release()");
73 return 0;
74 }
75 return lpToneGen->getSessionId();
76 }
77
android_media_ToneGenerator_release(JNIEnv * env,jobject thiz)78 static void android_media_ToneGenerator_release(JNIEnv *env, jobject thiz) {
79 ToneGenerator *lpToneGen = (ToneGenerator *)env->GetLongField(thiz,
80 fields.context);
81 ALOGV("android_media_ToneGenerator_release lpToneGen: %p", lpToneGen);
82
83 env->SetLongField(thiz, fields.context, 0);
84
85 delete lpToneGen;
86 }
87
android_media_ToneGenerator_native_setup(JNIEnv * env,jobject thiz,jint streamType,jint volume)88 static void android_media_ToneGenerator_native_setup(JNIEnv *env, jobject thiz,
89 jint streamType, jint volume) {
90 ToneGenerator *lpToneGen = new ToneGenerator((audio_stream_type_t) streamType, AudioSystem::linearToLog(volume), true);
91
92 env->SetLongField(thiz, fields.context, 0);
93
94 ALOGV("android_media_ToneGenerator_native_setup jobject: %p", thiz);
95
96 ALOGV("ToneGenerator lpToneGen: %p", lpToneGen);
97
98 if (!lpToneGen->isInited()) {
99 ALOGE("ToneGenerator init failed");
100 jniThrowRuntimeException(env, "Init failed");
101 delete lpToneGen;
102 return;
103 }
104
105 // Stow our new C++ ToneGenerator in an opaque field in the Java object.
106 env->SetLongField(thiz, fields.context, (jlong)lpToneGen);
107
108 ALOGV("ToneGenerator fields.context: %p", (void*) env->GetLongField(thiz, fields.context));
109 }
110
android_media_ToneGenerator_native_finalize(JNIEnv * env,jobject thiz)111 static void android_media_ToneGenerator_native_finalize(JNIEnv *env,
112 jobject thiz) {
113 ALOGV("android_media_ToneGenerator_native_finalize jobject: %p", thiz);
114
115 ToneGenerator *lpToneGen = (ToneGenerator *)env->GetLongField(thiz,
116 fields.context);
117
118 if (lpToneGen != NULL) {
119 ALOGV("delete lpToneGen: %p", lpToneGen);
120 delete lpToneGen;
121 }
122 }
123
124 // ----------------------------------------------------------------------------
125
126 static const JNINativeMethod gMethods[] = {
127 { "startTone", "(II)Z", (void *)android_media_ToneGenerator_startTone },
128 { "stopTone", "()V", (void *)android_media_ToneGenerator_stopTone },
129 { "getAudioSessionId", "()I", (void *)android_media_ToneGenerator_getAudioSessionId},
130 { "release", "()V", (void *)android_media_ToneGenerator_release },
131 { "native_setup", "(II)V", (void *)android_media_ToneGenerator_native_setup },
132 { "native_finalize", "()V", (void *)android_media_ToneGenerator_native_finalize }
133 };
134
135
register_android_media_ToneGenerator(JNIEnv * env)136 int register_android_media_ToneGenerator(JNIEnv *env) {
137 jclass clazz = FindClassOrDie(env, "android/media/ToneGenerator");
138
139 fields.context = GetFieldIDOrDie(env, clazz, "mNativeContext", "J");
140 ALOGV("register_android_media_ToneGenerator ToneGenerator fields.context: %p", fields.context);
141
142 return RegisterMethodsOrDie(env, "android/media/ToneGenerator", gMethods, NELEM(gMethods));
143 }
144