android_media_SoundPool.cpp revision c0e3ddf8f2f30dc9593f0a1bfd46335823e25d65
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" 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 jclass mSoundPoolClass; 33} fields; 34 35static inline SoundPool* MusterSoundPool(JNIEnv *env, jobject thiz) { 36 return (SoundPool*)env->GetIntField(thiz, fields.mNativeContext); 37} 38 39// ---------------------------------------------------------------------------- 40static int 41android_media_SoundPool_load_URL(JNIEnv *env, jobject thiz, jstring path, jint priority) 42{ 43 LOGV("android_media_SoundPool_load_URL"); 44 SoundPool *ap = MusterSoundPool(env, thiz); 45 if (path == NULL) { 46 jniThrowException(env, "java/lang/IllegalArgumentException", NULL); 47 return 0; 48 } 49 const char* s = env->GetStringUTFChars(path, NULL); 50 int id = ap->load(s, priority); 51 env->ReleaseStringUTFChars(path, s); 52 return id; 53} 54 55static int 56android_media_SoundPool_load_FD(JNIEnv *env, jobject thiz, jobject fileDescriptor, 57 jlong offset, jlong length, jint priority) 58{ 59 LOGV("android_media_SoundPool_load_FD"); 60 SoundPool *ap = MusterSoundPool(env, thiz); 61 if (ap == NULL) return 0; 62 return ap->load(getParcelFileDescriptorFD(env, fileDescriptor), 63 int64_t(offset), int64_t(length), int(priority)); 64} 65 66static bool 67android_media_SoundPool_unload(JNIEnv *env, jobject thiz, jint sampleID) { 68 LOGV("android_media_SoundPool_unload\n"); 69 SoundPool *ap = MusterSoundPool(env, thiz); 70 if (ap == NULL) return 0; 71 return ap->unload(sampleID); 72} 73 74static int 75android_media_SoundPool_play(JNIEnv *env, jobject thiz, jint sampleID, 76 jfloat leftVolume, jfloat rightVolume, jint priority, jint loop, 77 jfloat rate) 78{ 79 LOGV("android_media_SoundPool_play\n"); 80 SoundPool *ap = MusterSoundPool(env, thiz); 81 if (ap == NULL) return 0; 82 return ap->play(sampleID, leftVolume, rightVolume, priority, loop, rate); 83} 84 85static void 86android_media_SoundPool_pause(JNIEnv *env, jobject thiz, jint channelID) 87{ 88 LOGV("android_media_SoundPool_pause"); 89 SoundPool *ap = MusterSoundPool(env, thiz); 90 if (ap == NULL) return; 91 ap->pause(channelID); 92} 93 94static void 95android_media_SoundPool_resume(JNIEnv *env, jobject thiz, jint channelID) 96{ 97 LOGV("android_media_SoundPool_resume"); 98 SoundPool *ap = MusterSoundPool(env, thiz); 99 if (ap == NULL) return; 100 ap->resume(channelID); 101} 102 103static void 104android_media_SoundPool_stop(JNIEnv *env, jobject thiz, jint channelID) 105{ 106 LOGV("android_media_SoundPool_stop"); 107 SoundPool *ap = MusterSoundPool(env, thiz); 108 if (ap == NULL) return; 109 ap->stop(channelID); 110} 111 112static void 113android_media_SoundPool_setVolume(JNIEnv *env, jobject thiz, jint channelID, 114 float leftVolume, float rightVolume) 115{ 116 LOGV("android_media_SoundPool_setVolume"); 117 SoundPool *ap = MusterSoundPool(env, thiz); 118 if (ap == NULL) return; 119 ap->setVolume(channelID, leftVolume, rightVolume); 120} 121 122static void 123android_media_SoundPool_setPriority(JNIEnv *env, jobject thiz, jint channelID, 124 int priority) 125{ 126 LOGV("android_media_SoundPool_setPriority"); 127 SoundPool *ap = MusterSoundPool(env, thiz); 128 if (ap == NULL) return; 129 ap->setPriority(channelID, priority); 130} 131 132static void 133android_media_SoundPool_setLoop(JNIEnv *env, jobject thiz, jint channelID, 134 int loop) 135{ 136 LOGV("android_media_SoundPool_setLoop"); 137 SoundPool *ap = MusterSoundPool(env, thiz); 138 if (ap == NULL) return; 139 ap->setLoop(channelID, loop); 140} 141 142static void 143android_media_SoundPool_setRate(JNIEnv *env, jobject thiz, jint channelID, 144 float rate) 145{ 146 LOGV("android_media_SoundPool_setRate"); 147 SoundPool *ap = MusterSoundPool(env, thiz); 148 if (ap == NULL) return; 149 ap->setRate(channelID, rate); 150} 151 152static void 153android_media_SoundPool_native_setup(JNIEnv *env, jobject thiz, 154 jobject weak_this, jint maxChannels, jint streamType, jint srcQuality) 155{ 156 LOGV("android_media_SoundPool_native_setup"); 157 SoundPool *ap = new SoundPool(maxChannels, streamType, srcQuality); 158 if (ap == NULL) { 159 jniThrowException(env, "java/lang/RuntimeException", "Out of memory"); 160 return; 161 } 162 163 // save pointer to SoundPool C++ object in opaque field in Java object 164 env->SetIntField(thiz, fields.mNativeContext, (int)ap); 165} 166 167static void 168android_media_SoundPool_release(JNIEnv *env, jobject thiz) 169{ 170 LOGV("android_media_SoundPool_release"); 171 SoundPool *ap = MusterSoundPool(env, thiz); 172 if (ap != NULL) { 173 env->SetIntField(thiz, fields.mNativeContext, 0); 174 delete ap; 175 } 176} 177 178// ---------------------------------------------------------------------------- 179 180// Dalvik VM type signatures 181static JNINativeMethod gMethods[] = { 182 { "_load", 183 "(Ljava/lang/String;I)I", 184 (void *)android_media_SoundPool_load_URL 185 }, 186 { "_load", 187 "(Ljava/io/FileDescriptor;JJI)I", 188 (void *)android_media_SoundPool_load_FD 189 }, 190 { "unload", 191 "(I)Z", 192 (void *)android_media_SoundPool_unload 193 }, 194 { "play", 195 "(IFFIIF)I", 196 (void *)android_media_SoundPool_play 197 }, 198 { "pause", 199 "(I)V", 200 (void *)android_media_SoundPool_pause 201 }, 202 { "resume", 203 "(I)V", 204 (void *)android_media_SoundPool_resume 205 }, 206 { "stop", 207 "(I)V", 208 (void *)android_media_SoundPool_stop 209 }, 210 { "setVolume", 211 "(IFF)V", 212 (void *)android_media_SoundPool_setVolume 213 }, 214 { "setPriority", 215 "(II)V", 216 (void *)android_media_SoundPool_setPriority 217 }, 218 { "setLoop", 219 "(II)V", 220 (void *)android_media_SoundPool_setLoop 221 }, 222 { "setRate", 223 "(IF)V", 224 (void *)android_media_SoundPool_setRate 225 }, 226 { "native_setup", 227 "(Ljava/lang/Object;III)V", 228 (void*)android_media_SoundPool_native_setup 229 }, 230 { "release", 231 "()V", 232 (void*)android_media_SoundPool_release 233 } 234}; 235 236static const char* const kClassPathName = "android/media/SoundPool"; 237 238jint JNI_OnLoad(JavaVM* vm, void* reserved) 239{ 240 JNIEnv* env = NULL; 241 jint result = -1; 242 jclass clazz; 243 244 if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) { 245 LOGE("ERROR: GetEnv failed\n"); 246 goto bail; 247 } 248 assert(env != NULL); 249 250 clazz = env->FindClass(kClassPathName); 251 if (clazz == NULL) { 252 LOGE("Can't find %s", kClassPathName); 253 goto bail; 254 } 255 256 fields.mNativeContext = env->GetFieldID(clazz, "mNativeContext", "I"); 257 if (fields.mNativeContext == NULL) { 258 LOGE("Can't find SoundPool.mNativeContext"); 259 goto bail; 260 } 261 262 if (AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods)) < 0) 263 goto bail; 264 265 /* success -- return valid version number */ 266 result = JNI_VERSION_1_4; 267 268bail: 269 return result; 270} 271