android_media_SoundPool.cpp revision f6e43bf29084760b39257b2273e0f04c2815fdc5
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 "SoundPool.h" 27 28using namespace android; 29 30static struct fields_t { 31 jfieldID mNativeContext; 32 jmethodID mPostEvent; 33 jclass mSoundPoolClass; 34} fields; 35 36static inline SoundPool* MusterSoundPool(JNIEnv *env, jobject thiz) { 37 return (SoundPool*)env->GetIntField(thiz, fields.mNativeContext); 38} 39 40// ---------------------------------------------------------------------------- 41static int 42android_media_SoundPool_load_URL(JNIEnv *env, jobject thiz, jstring path, jint priority) 43{ 44 LOGV("android_media_SoundPool_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 56static int 57android_media_SoundPool_load_FD(JNIEnv *env, jobject thiz, jobject fileDescriptor, 58 jlong offset, jlong length, jint priority) 59{ 60 LOGV("android_media_SoundPool_load_FD"); 61 SoundPool *ap = MusterSoundPool(env, thiz); 62 if (ap == NULL) return 0; 63 return ap->load(getParcelFileDescriptorFD(env, fileDescriptor), 64 int64_t(offset), int64_t(length), int(priority)); 65} 66 67static bool 68android_media_SoundPool_unload(JNIEnv *env, jobject thiz, jint sampleID) { 69 LOGV("android_media_SoundPool_unload\n"); 70 SoundPool *ap = MusterSoundPool(env, thiz); 71 if (ap == NULL) return 0; 72 return ap->unload(sampleID); 73} 74 75static int 76android_media_SoundPool_play(JNIEnv *env, jobject thiz, jint sampleID, 77 jfloat leftVolume, jfloat rightVolume, jint priority, jint loop, 78 jfloat rate) 79{ 80 LOGV("android_media_SoundPool_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 86static void 87android_media_SoundPool_pause(JNIEnv *env, jobject thiz, jint channelID) 88{ 89 LOGV("android_media_SoundPool_pause"); 90 SoundPool *ap = MusterSoundPool(env, thiz); 91 if (ap == NULL) return; 92 ap->pause(channelID); 93} 94 95static void 96android_media_SoundPool_resume(JNIEnv *env, jobject thiz, jint channelID) 97{ 98 LOGV("android_media_SoundPool_resume"); 99 SoundPool *ap = MusterSoundPool(env, thiz); 100 if (ap == NULL) return; 101 ap->resume(channelID); 102} 103 104static void 105android_media_SoundPool_stop(JNIEnv *env, jobject thiz, jint channelID) 106{ 107 LOGV("android_media_SoundPool_stop"); 108 SoundPool *ap = MusterSoundPool(env, thiz); 109 if (ap == NULL) return; 110 ap->stop(channelID); 111} 112 113static void 114android_media_SoundPool_setVolume(JNIEnv *env, jobject thiz, jint channelID, 115 float leftVolume, float rightVolume) 116{ 117 LOGV("android_media_SoundPool_setVolume"); 118 SoundPool *ap = MusterSoundPool(env, thiz); 119 if (ap == NULL) return; 120 ap->setVolume(channelID, leftVolume, rightVolume); 121} 122 123static void 124android_media_SoundPool_setPriority(JNIEnv *env, jobject thiz, jint channelID, 125 int priority) 126{ 127 LOGV("android_media_SoundPool_setPriority"); 128 SoundPool *ap = MusterSoundPool(env, thiz); 129 if (ap == NULL) return; 130 ap->setPriority(channelID, priority); 131} 132 133static void 134android_media_SoundPool_setLoop(JNIEnv *env, jobject thiz, jint channelID, 135 int loop) 136{ 137 LOGV("android_media_SoundPool_setLoop"); 138 SoundPool *ap = MusterSoundPool(env, thiz); 139 if (ap == NULL) return; 140 ap->setLoop(channelID, loop); 141} 142 143static void 144android_media_SoundPool_setRate(JNIEnv *env, jobject thiz, jint channelID, 145 float rate) 146{ 147 LOGV("android_media_SoundPool_setRate"); 148 SoundPool *ap = MusterSoundPool(env, thiz); 149 if (ap == NULL) return; 150 ap->setRate(channelID, rate); 151} 152 153static void android_media_callback(SoundPoolEvent event, SoundPool* soundPool, void* user) 154{ 155 LOGV("callback: (%d, %d, %d, %p, %p)", event.mMsg, event.mArg1, event.mArg2, soundPool, user); 156 JNIEnv *env = AndroidRuntime::getJNIEnv(); 157 env->CallStaticVoidMethod(fields.mSoundPoolClass, fields.mPostEvent, user, event.mMsg, event.mArg1, event.mArg2, NULL); 158} 159 160static jint 161android_media_SoundPool_native_setup(JNIEnv *env, jobject thiz, jobject weakRef, jint maxChannels, jint streamType, jint srcQuality) 162{ 163 LOGV("android_media_SoundPool_native_setup"); 164 SoundPool *ap = new SoundPool(maxChannels, streamType, srcQuality); 165 if (ap == NULL) { 166 return -1; 167 } 168 169 // save pointer to SoundPool C++ object in opaque field in Java object 170 env->SetIntField(thiz, fields.mNativeContext, (int)ap); 171 172 // set callback with weak reference 173 jobject globalWeakRef = env->NewGlobalRef(weakRef); 174 ap->setCallback(android_media_callback, globalWeakRef); 175 return 0; 176} 177 178static void 179android_media_SoundPool_release(JNIEnv *env, jobject thiz) 180{ 181 LOGV("android_media_SoundPool_release"); 182 SoundPool *ap = MusterSoundPool(env, thiz); 183 if (ap != NULL) { 184 185 // release weak reference 186 jobject weakRef = (jobject) ap->getUserData(); 187 if (weakRef != NULL) { 188 env->DeleteGlobalRef(weakRef); 189 } 190 191 // clear callback and native context 192 ap->setCallback(NULL, NULL); 193 env->SetIntField(thiz, fields.mNativeContext, 0); 194 delete ap; 195 } 196} 197 198// ---------------------------------------------------------------------------- 199 200// Dalvik VM type signatures 201static JNINativeMethod gMethods[] = { 202 { "_load", 203 "(Ljava/lang/String;I)I", 204 (void *)android_media_SoundPool_load_URL 205 }, 206 { "_load", 207 "(Ljava/io/FileDescriptor;JJI)I", 208 (void *)android_media_SoundPool_load_FD 209 }, 210 { "unload", 211 "(I)Z", 212 (void *)android_media_SoundPool_unload 213 }, 214 { "play", 215 "(IFFIIF)I", 216 (void *)android_media_SoundPool_play 217 }, 218 { "pause", 219 "(I)V", 220 (void *)android_media_SoundPool_pause 221 }, 222 { "resume", 223 "(I)V", 224 (void *)android_media_SoundPool_resume 225 }, 226 { "stop", 227 "(I)V", 228 (void *)android_media_SoundPool_stop 229 }, 230 { "setVolume", 231 "(IFF)V", 232 (void *)android_media_SoundPool_setVolume 233 }, 234 { "setPriority", 235 "(II)V", 236 (void *)android_media_SoundPool_setPriority 237 }, 238 { "setLoop", 239 "(II)V", 240 (void *)android_media_SoundPool_setLoop 241 }, 242 { "setRate", 243 "(IF)V", 244 (void *)android_media_SoundPool_setRate 245 }, 246 { "native_setup", 247 "(Ljava/lang/Object;III)I", 248 (void*)android_media_SoundPool_native_setup 249 }, 250 { "release", 251 "()V", 252 (void*)android_media_SoundPool_release 253 } 254}; 255 256static const char* const kClassPathName = "android/media/SoundPool"; 257 258jint JNI_OnLoad(JavaVM* vm, void* reserved) 259{ 260 JNIEnv* env = NULL; 261 jint result = -1; 262 jclass clazz; 263 264 if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) { 265 LOGE("ERROR: GetEnv failed\n"); 266 goto bail; 267 } 268 assert(env != NULL); 269 270 clazz = env->FindClass(kClassPathName); 271 if (clazz == NULL) { 272 LOGE("Can't find %s", kClassPathName); 273 goto bail; 274 } 275 276 fields.mNativeContext = env->GetFieldID(clazz, "mNativeContext", "I"); 277 if (fields.mNativeContext == NULL) { 278 LOGE("Can't find SoundPool.mNativeContext"); 279 goto bail; 280 } 281 282 fields.mPostEvent = env->GetStaticMethodID(clazz, "postEventFromNative", 283 "(Ljava/lang/Object;IIILjava/lang/Object;)V"); 284 if (fields.mPostEvent == NULL) { 285 LOGE("Can't find android/media/SoundPool.postEventFromNative"); 286 return -1; 287 } 288 289 if (AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods)) < 0) 290 goto bail; 291 292 /* success -- return valid version number */ 293 result = JNI_VERSION_1_4; 294 295bail: 296 return result; 297} 298