1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <stdio.h> 18 19 //#define LOG_NDEBUG 0 20 #define LOG_TAG "SoundPool-JNI" 21 22 #include <utils/Log.h> 23 #include <nativehelper/jni.h> 24 #include <nativehelper/JNIHelp.h> 25 #include <android_runtime/AndroidRuntime.h> 26 #include <media/SoundPool.h> 27 28 using namespace android; 29 30 static struct fields_t { 31 jfieldID mNativeContext; 32 jmethodID mPostEvent; 33 jclass mSoundPoolClass; 34 } fields; 35 36 static inline SoundPool* MusterSoundPool(JNIEnv *env, jobject thiz) { 37 return (SoundPool*)env->GetIntField(thiz, fields.mNativeContext); 38 } 39 40 // ---------------------------------------------------------------------------- 41 static int 42 android_media_SoundPool_SoundPoolImpl_load_URL(JNIEnv *env, jobject thiz, jstring path, jint priority) 43 { 44 ALOGV("android_media_SoundPool_SoundPoolImpl_load_URL"); 45 SoundPool *ap = MusterSoundPool(env, thiz); 46 if (path == NULL) { 47 jniThrowException(env, "java/lang/IllegalArgumentException", NULL); 48 return 0; 49 } 50 const char* s = env->GetStringUTFChars(path, NULL); 51 int id = ap->load(s, priority); 52 env->ReleaseStringUTFChars(path, s); 53 return id; 54 } 55 56 static int 57 android_media_SoundPool_SoundPoolImpl_load_FD(JNIEnv *env, jobject thiz, jobject fileDescriptor, 58 jlong offset, jlong length, jint priority) 59 { 60 ALOGV("android_media_SoundPool_SoundPoolImpl_load_FD"); 61 SoundPool *ap = MusterSoundPool(env, thiz); 62 if (ap == NULL) return 0; 63 return ap->load(jniGetFDFromFileDescriptor(env, fileDescriptor), 64 int64_t(offset), int64_t(length), int(priority)); 65 } 66 67 static bool 68 android_media_SoundPool_SoundPoolImpl_unload(JNIEnv *env, jobject thiz, jint sampleID) { 69 ALOGV("android_media_SoundPool_SoundPoolImpl_unload\n"); 70 SoundPool *ap = MusterSoundPool(env, thiz); 71 if (ap == NULL) return 0; 72 return ap->unload(sampleID); 73 } 74 75 static int 76 android_media_SoundPool_SoundPoolImpl_play(JNIEnv *env, jobject thiz, jint sampleID, 77 jfloat leftVolume, jfloat rightVolume, jint priority, jint loop, 78 jfloat rate) 79 { 80 ALOGV("android_media_SoundPool_SoundPoolImpl_play\n"); 81 SoundPool *ap = MusterSoundPool(env, thiz); 82 if (ap == NULL) return 0; 83 return ap->play(sampleID, leftVolume, rightVolume, priority, loop, rate); 84 } 85 86 static void 87 android_media_SoundPool_SoundPoolImpl_pause(JNIEnv *env, jobject thiz, jint channelID) 88 { 89 ALOGV("android_media_SoundPool_SoundPoolImpl_pause"); 90 SoundPool *ap = MusterSoundPool(env, thiz); 91 if (ap == NULL) return; 92 ap->pause(channelID); 93 } 94 95 static void 96 android_media_SoundPool_SoundPoolImpl_resume(JNIEnv *env, jobject thiz, jint channelID) 97 { 98 ALOGV("android_media_SoundPool_SoundPoolImpl_resume"); 99 SoundPool *ap = MusterSoundPool(env, thiz); 100 if (ap == NULL) return; 101 ap->resume(channelID); 102 } 103 104 static void 105 android_media_SoundPool_SoundPoolImpl_autoPause(JNIEnv *env, jobject thiz) 106 { 107 ALOGV("android_media_SoundPool_SoundPoolImpl_autoPause"); 108 SoundPool *ap = MusterSoundPool(env, thiz); 109 if (ap == NULL) return; 110 ap->autoPause(); 111 } 112 113 static void 114 android_media_SoundPool_SoundPoolImpl_autoResume(JNIEnv *env, jobject thiz) 115 { 116 ALOGV("android_media_SoundPool_SoundPoolImpl_autoResume"); 117 SoundPool *ap = MusterSoundPool(env, thiz); 118 if (ap == NULL) return; 119 ap->autoResume(); 120 } 121 122 static void 123 android_media_SoundPool_SoundPoolImpl_stop(JNIEnv *env, jobject thiz, jint channelID) 124 { 125 ALOGV("android_media_SoundPool_SoundPoolImpl_stop"); 126 SoundPool *ap = MusterSoundPool(env, thiz); 127 if (ap == NULL) return; 128 ap->stop(channelID); 129 } 130 131 static void 132 android_media_SoundPool_SoundPoolImpl_setVolume(JNIEnv *env, jobject thiz, jint channelID, 133 float leftVolume, float rightVolume) 134 { 135 ALOGV("android_media_SoundPool_SoundPoolImpl_setVolume"); 136 SoundPool *ap = MusterSoundPool(env, thiz); 137 if (ap == NULL) return; 138 ap->setVolume(channelID, leftVolume, rightVolume); 139 } 140 141 static void 142 android_media_SoundPool_SoundPoolImpl_setPriority(JNIEnv *env, jobject thiz, jint channelID, 143 int priority) 144 { 145 ALOGV("android_media_SoundPool_SoundPoolImpl_setPriority"); 146 SoundPool *ap = MusterSoundPool(env, thiz); 147 if (ap == NULL) return; 148 ap->setPriority(channelID, priority); 149 } 150 151 static void 152 android_media_SoundPool_SoundPoolImpl_setLoop(JNIEnv *env, jobject thiz, jint channelID, 153 int loop) 154 { 155 ALOGV("android_media_SoundPool_SoundPoolImpl_setLoop"); 156 SoundPool *ap = MusterSoundPool(env, thiz); 157 if (ap == NULL) return; 158 ap->setLoop(channelID, loop); 159 } 160 161 static void 162 android_media_SoundPool_SoundPoolImpl_setRate(JNIEnv *env, jobject thiz, jint channelID, 163 float rate) 164 { 165 ALOGV("android_media_SoundPool_SoundPoolImpl_setRate"); 166 SoundPool *ap = MusterSoundPool(env, thiz); 167 if (ap == NULL) return; 168 ap->setRate(channelID, rate); 169 } 170 171 static void android_media_callback(SoundPoolEvent event, SoundPool* soundPool, void* user) 172 { 173 ALOGV("callback: (%d, %d, %d, %p, %p)", event.mMsg, event.mArg1, event.mArg2, soundPool, user); 174 JNIEnv *env = AndroidRuntime::getJNIEnv(); 175 env->CallStaticVoidMethod(fields.mSoundPoolClass, fields.mPostEvent, user, event.mMsg, event.mArg1, event.mArg2, NULL); 176 } 177 178 static jint 179 android_media_SoundPool_SoundPoolImpl_native_setup(JNIEnv *env, jobject thiz, jobject weakRef, jint maxChannels, jint streamType, jint srcQuality) 180 { 181 ALOGV("android_media_SoundPool_SoundPoolImpl_native_setup"); 182 SoundPool *ap = new SoundPool(maxChannels, (audio_stream_type_t) streamType, srcQuality); 183 if (ap == NULL) { 184 return -1; 185 } 186 187 // save pointer to SoundPool C++ object in opaque field in Java object 188 env->SetIntField(thiz, fields.mNativeContext, (int)ap); 189 190 // set callback with weak reference 191 jobject globalWeakRef = env->NewGlobalRef(weakRef); 192 ap->setCallback(android_media_callback, globalWeakRef); 193 return 0; 194 } 195 196 static void 197 android_media_SoundPool_SoundPoolImpl_release(JNIEnv *env, jobject thiz) 198 { 199 ALOGV("android_media_SoundPool_SoundPoolImpl_release"); 200 SoundPool *ap = MusterSoundPool(env, thiz); 201 if (ap != NULL) { 202 203 // release weak reference 204 jobject weakRef = (jobject) ap->getUserData(); 205 if (weakRef != NULL) { 206 env->DeleteGlobalRef(weakRef); 207 } 208 209 // clear callback and native context 210 ap->setCallback(NULL, NULL); 211 env->SetIntField(thiz, fields.mNativeContext, 0); 212 delete ap; 213 } 214 } 215 216 // ---------------------------------------------------------------------------- 217 218 // Dalvik VM type signatures 219 static JNINativeMethod gMethods[] = { 220 { "_load", 221 "(Ljava/lang/String;I)I", 222 (void *)android_media_SoundPool_SoundPoolImpl_load_URL 223 }, 224 { "_load", 225 "(Ljava/io/FileDescriptor;JJI)I", 226 (void *)android_media_SoundPool_SoundPoolImpl_load_FD 227 }, 228 { "unload", 229 "(I)Z", 230 (void *)android_media_SoundPool_SoundPoolImpl_unload 231 }, 232 { "play", 233 "(IFFIIF)I", 234 (void *)android_media_SoundPool_SoundPoolImpl_play 235 }, 236 { "pause", 237 "(I)V", 238 (void *)android_media_SoundPool_SoundPoolImpl_pause 239 }, 240 { "resume", 241 "(I)V", 242 (void *)android_media_SoundPool_SoundPoolImpl_resume 243 }, 244 { "autoPause", 245 "()V", 246 (void *)android_media_SoundPool_SoundPoolImpl_autoPause 247 }, 248 { "autoResume", 249 "()V", 250 (void *)android_media_SoundPool_SoundPoolImpl_autoResume 251 }, 252 { "stop", 253 "(I)V", 254 (void *)android_media_SoundPool_SoundPoolImpl_stop 255 }, 256 { "setVolume", 257 "(IFF)V", 258 (void *)android_media_SoundPool_SoundPoolImpl_setVolume 259 }, 260 { "setPriority", 261 "(II)V", 262 (void *)android_media_SoundPool_SoundPoolImpl_setPriority 263 }, 264 { "setLoop", 265 "(II)V", 266 (void *)android_media_SoundPool_SoundPoolImpl_setLoop 267 }, 268 { "setRate", 269 "(IF)V", 270 (void *)android_media_SoundPool_SoundPoolImpl_setRate 271 }, 272 { "native_setup", 273 "(Ljava/lang/Object;III)I", 274 (void*)android_media_SoundPool_SoundPoolImpl_native_setup 275 }, 276 { "release", 277 "()V", 278 (void*)android_media_SoundPool_SoundPoolImpl_release 279 } 280 }; 281 282 static const char* const kClassPathName = "android/media/SoundPool$SoundPoolImpl"; 283 284 jint JNI_OnLoad(JavaVM* vm, void* reserved) 285 { 286 JNIEnv* env = NULL; 287 jint result = -1; 288 jclass clazz; 289 290 if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) { 291 ALOGE("ERROR: GetEnv failed\n"); 292 goto bail; 293 } 294 assert(env != NULL); 295 296 clazz = env->FindClass(kClassPathName); 297 if (clazz == NULL) { 298 ALOGE("Can't find %s", kClassPathName); 299 goto bail; 300 } 301 302 fields.mNativeContext = env->GetFieldID(clazz, "mNativeContext", "I"); 303 if (fields.mNativeContext == NULL) { 304 ALOGE("Can't find SoundPoolImpl.mNativeContext"); 305 goto bail; 306 } 307 308 fields.mPostEvent = env->GetStaticMethodID(clazz, "postEventFromNative", 309 "(Ljava/lang/Object;IIILjava/lang/Object;)V"); 310 if (fields.mPostEvent == NULL) { 311 ALOGE("Can't find android/media/SoundPoolImpl.postEventFromNative"); 312 goto bail; 313 } 314 315 // create a reference to class. Technically, we're leaking this reference 316 // since it's a static object. 317 fields.mSoundPoolClass = (jclass) env->NewGlobalRef(clazz); 318 319 if (AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods)) < 0) 320 goto bail; 321 322 /* success -- return valid version number */ 323 result = JNI_VERSION_1_4; 324 325 bail: 326 return result; 327 } 328
