media/jni/soundpool/android_media_SoundPool.cpp - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2008 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #include <stdio.h>

 //#define LOG_NDEBUG 0
 #define LOG_TAG "SoundPool-JNI"

 #include <utils/Log.h>
 #include <nativehelper/jni.h>
 #include <nativehelper/JNIHelp.h>
 #include <android_runtime/AndroidRuntime.h>
 #include <media/SoundPool.h>

 using namespace android;

 static struct fields_t {
     jfieldID    mNativeContext;
     jmethodID   mPostEvent;
     jclass      mSoundPoolClass;
 } fields;

 static inline SoundPool* MusterSoundPool(JNIEnv *env, jobject thiz) {
     return (SoundPool*)env->GetIntField(thiz, fields.mNativeContext);
 }

 // ----------------------------------------------------------------------------
 static int
 android_media_SoundPool_load_URL(JNIEnv *env, jobject thiz, jstring path, jint priority)
 {
     ALOGV("android_media_SoundPool_load_URL");
     SoundPool *ap = MusterSoundPool(env, thiz);
     if (path == NULL) {
         jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
         return 0;
     }
     const char* s = env->GetStringUTFChars(path, NULL);
     int id = ap->load(s, priority);
     env->ReleaseStringUTFChars(path, s);
     return id;
 }

 static int
 android_media_SoundPool_load_FD(JNIEnv *env, jobject thiz, jobject fileDescriptor,
         jlong offset, jlong length, jint priority)
 {
     ALOGV("android_media_SoundPool_load_FD");
     SoundPool *ap = MusterSoundPool(env, thiz);
     if (ap == NULL) return 0;
     return ap->load(jniGetFDFromFileDescriptor(env, fileDescriptor),
             int64_t(offset), int64_t(length), int(priority));
 }

 static bool
 android_media_SoundPool_unload(JNIEnv *env, jobject thiz, jint sampleID) {
     ALOGV("android_media_SoundPool_unload\n");
     SoundPool *ap = MusterSoundPool(env, thiz);
     if (ap == NULL) return 0;
     return ap->unload(sampleID);
 }

 static int
 android_media_SoundPool_play(JNIEnv *env, jobject thiz, jint sampleID,
         jfloat leftVolume, jfloat rightVolume, jint priority, jint loop,
         jfloat rate)
 {
     ALOGV("android_media_SoundPool_play\n");
     SoundPool *ap = MusterSoundPool(env, thiz);
     if (ap == NULL) return 0;
     return ap->play(sampleID, leftVolume, rightVolume, priority, loop, rate);
 }

 static void
 android_media_SoundPool_pause(JNIEnv *env, jobject thiz, jint channelID)
 {
     ALOGV("android_media_SoundPool_pause");
     SoundPool *ap = MusterSoundPool(env, thiz);
     if (ap == NULL) return;
     ap->pause(channelID);
 }

 static void
 android_media_SoundPool_resume(JNIEnv *env, jobject thiz, jint channelID)
 {
     ALOGV("android_media_SoundPool_resume");
     SoundPool *ap = MusterSoundPool(env, thiz);
     if (ap == NULL) return;
     ap->resume(channelID);
 }

 static void
 android_media_SoundPool_autoPause(JNIEnv *env, jobject thiz)
 {
     ALOGV("android_media_SoundPool_autoPause");
     SoundPool *ap = MusterSoundPool(env, thiz);
     if (ap == NULL) return;
     ap->autoPause();
 }

 static void
 android_media_SoundPool_autoResume(JNIEnv *env, jobject thiz)
 {
     ALOGV("android_media_SoundPool_autoResume");
     SoundPool *ap = MusterSoundPool(env, thiz);
     if (ap == NULL) return;
     ap->autoResume();
 }

 static void
 android_media_SoundPool_stop(JNIEnv *env, jobject thiz, jint channelID)
 {
     ALOGV("android_media_SoundPool_stop");
     SoundPool *ap = MusterSoundPool(env, thiz);
     if (ap == NULL) return;
     ap->stop(channelID);
 }

 static void
 android_media_SoundPool_setVolume(JNIEnv *env, jobject thiz, jint channelID,
         float leftVolume, float rightVolume)
 {
     ALOGV("android_media_SoundPool_setVolume");
     SoundPool *ap = MusterSoundPool(env, thiz);
     if (ap == NULL) return;
     ap->setVolume(channelID, leftVolume, rightVolume);
 }

 static void
 android_media_SoundPool_setPriority(JNIEnv *env, jobject thiz, jint channelID,
         int priority)
 {
     ALOGV("android_media_SoundPool_setPriority");
     SoundPool *ap = MusterSoundPool(env, thiz);
     if (ap == NULL) return;
     ap->setPriority(channelID, priority);
 }

 static void
 android_media_SoundPool_setLoop(JNIEnv *env, jobject thiz, jint channelID,
         int loop)
 {
     ALOGV("android_media_SoundPool_setLoop");
     SoundPool *ap = MusterSoundPool(env, thiz);
     if (ap == NULL) return;
     ap->setLoop(channelID, loop);
 }

 static void
 android_media_SoundPool_setRate(JNIEnv *env, jobject thiz, jint channelID,
         float rate)
 {
     ALOGV("android_media_SoundPool_setRate");
     SoundPool *ap = MusterSoundPool(env, thiz);
     if (ap == NULL) return;
     ap->setRate(channelID, rate);
 }

 static void android_media_callback(SoundPoolEvent event, SoundPool* soundPool, void* user)
 {
     ALOGV("callback: (%d, %d, %d, %p, %p)", event.mMsg, event.mArg1, event.mArg2, soundPool, user);
     JNIEnv *env = AndroidRuntime::getJNIEnv();
     env->CallStaticVoidMethod(fields.mSoundPoolClass, fields.mPostEvent, user, event.mMsg, event.mArg1, event.mArg2, NULL);
 }

 static jint
 android_media_SoundPool_native_setup(JNIEnv *env, jobject thiz, jobject weakRef, jint maxChannels, jint streamType, jint srcQuality)
 {
     ALOGV("android_media_SoundPool_native_setup");
     SoundPool *ap = new SoundPool(maxChannels, (audio_stream_type_t) streamType, srcQuality);
     if (ap == NULL) {
         return -1;
     }

     // save pointer to SoundPool C++ object in opaque field in Java object
     env->SetIntField(thiz, fields.mNativeContext, (int)ap);

     // set callback with weak reference
     jobject globalWeakRef = env->NewGlobalRef(weakRef);
     ap->setCallback(android_media_callback, globalWeakRef);
     return 0;
 }

 static void
 android_media_SoundPool_release(JNIEnv *env, jobject thiz)
 {
     ALOGV("android_media_SoundPool_release");
     SoundPool *ap = MusterSoundPool(env, thiz);
     if (ap != NULL) {

         // release weak reference
         jobject weakRef = (jobject) ap->getUserData();
         if (weakRef != NULL) {
             env->DeleteGlobalRef(weakRef);
         }

         // clear callback and native context
         ap->setCallback(NULL, NULL);
         env->SetIntField(thiz, fields.mNativeContext, 0);
         delete ap;
     }
 }

 // ----------------------------------------------------------------------------

 // Dalvik VM type signatures
 static JNINativeMethod gMethods[] = {
     {   "_load",
         "(Ljava/lang/String;I)I",
         (void *)android_media_SoundPool_load_URL
     },
     {   "_load",
         "(Ljava/io/FileDescriptor;JJI)I",
         (void *)android_media_SoundPool_load_FD
     },
     {   "unload",
         "(I)Z",
         (void *)android_media_SoundPool_unload
     },
     {   "play",
         "(IFFIIF)I",
         (void *)android_media_SoundPool_play
     },
     {   "pause",
         "(I)V",
         (void *)android_media_SoundPool_pause
     },
     {   "resume",
         "(I)V",
         (void *)android_media_SoundPool_resume
     },
     {   "autoPause",
         "()V",
         (void *)android_media_SoundPool_autoPause
     },
     {   "autoResume",
         "()V",
         (void *)android_media_SoundPool_autoResume
     },
     {   "stop",
         "(I)V",
         (void *)android_media_SoundPool_stop
     },
     {   "setVolume",
         "(IFF)V",
         (void *)android_media_SoundPool_setVolume
     },
     {   "setPriority",
         "(II)V",
         (void *)android_media_SoundPool_setPriority
     },
     {   "setLoop",
         "(II)V",
         (void *)android_media_SoundPool_setLoop
     },
     {   "setRate",
         "(IF)V",
         (void *)android_media_SoundPool_setRate
     },
     {   "native_setup",
         "(Ljava/lang/Object;III)I",
         (void*)android_media_SoundPool_native_setup
     },
     {   "release",
         "()V",
         (void*)android_media_SoundPool_release
     }
 };

 static const char* const kClassPathName = "android/media/SoundPool";

 jint JNI_OnLoad(JavaVM* vm, void* reserved)
 {
     JNIEnv* env = NULL;
     jint result = -1;
     jclass clazz;

     if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) {
         ALOGE("ERROR: GetEnv failed\n");
         goto bail;
     }
     assert(env != NULL);

     clazz = env->FindClass(kClassPathName);
     if (clazz == NULL) {
         ALOGE("Can't find %s", kClassPathName);
         goto bail;
     }

     fields.mNativeContext = env->GetFieldID(clazz, "mNativeContext", "I");
     if (fields.mNativeContext == NULL) {
         ALOGE("Can't find SoundPool.mNativeContext");
         goto bail;
     }

     fields.mPostEvent = env->GetStaticMethodID(clazz, "postEventFromNative",
                                                "(Ljava/lang/Object;IIILjava/lang/Object;)V");
     if (fields.mPostEvent == NULL) {
         ALOGE("Can't find android/media/SoundPool.postEventFromNative");
         goto bail;
     }

     // create a reference to class. Technically, we're leaking this reference
     // since it's a static object.
     fields.mSoundPoolClass = (jclass) env->NewGlobalRef(clazz);

     if (AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods)) < 0)
         goto bail;

     /* success -- return valid version number */
     result = JNI_VERSION_1_4;

 bail:
     return result;
 }
	/*
	* Copyright (C) 2008 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#include <stdio.h>

	//#define LOG_NDEBUG 0
	#define LOG_TAG "SoundPool-JNI"

	#include <utils/Log.h>
	#include <nativehelper/jni.h>
	#include <nativehelper/JNIHelp.h>
	#include <android_runtime/AndroidRuntime.h>
	#include <media/SoundPool.h>

	using namespace android;

	static struct fields_t {
	jfieldID mNativeContext;
	jmethodID mPostEvent;
	jclass mSoundPoolClass;
	} fields;

	static inline SoundPool* MusterSoundPool(JNIEnv *env, jobject thiz) {
	return (SoundPool*)env->GetIntField(thiz, fields.mNativeContext);
	}

	// ----------------------------------------------------------------------------
	static int
	android_media_SoundPool_load_URL(JNIEnv *env, jobject thiz, jstring path, jint priority)
	{
	ALOGV("android_media_SoundPool_load_URL");
	SoundPool *ap = MusterSoundPool(env, thiz);
	if (path == NULL) {
	jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
	return 0;
	}
	const char* s = env->GetStringUTFChars(path, NULL);
	int id = ap->load(s, priority);
	env->ReleaseStringUTFChars(path, s);
	return id;
	}

	static int
	android_media_SoundPool_load_FD(JNIEnv *env, jobject thiz, jobject fileDescriptor,
	jlong offset, jlong length, jint priority)
	{
	ALOGV("android_media_SoundPool_load_FD");
	SoundPool *ap = MusterSoundPool(env, thiz);
	if (ap == NULL) return 0;
	return ap->load(jniGetFDFromFileDescriptor(env, fileDescriptor),
	int64_t(offset), int64_t(length), int(priority));
	}

	static bool
	android_media_SoundPool_unload(JNIEnv *env, jobject thiz, jint sampleID) {
	ALOGV("android_media_SoundPool_unload\n");
	SoundPool *ap = MusterSoundPool(env, thiz);
	if (ap == NULL) return 0;
	return ap->unload(sampleID);
	}

	static int
	android_media_SoundPool_play(JNIEnv *env, jobject thiz, jint sampleID,
	jfloat leftVolume, jfloat rightVolume, jint priority, jint loop,
	jfloat rate)
	{
	ALOGV("android_media_SoundPool_play\n");
	SoundPool *ap = MusterSoundPool(env, thiz);
	if (ap == NULL) return 0;
	return ap->play(sampleID, leftVolume, rightVolume, priority, loop, rate);
	}

	static void
	android_media_SoundPool_pause(JNIEnv *env, jobject thiz, jint channelID)
	{
	ALOGV("android_media_SoundPool_pause");
	SoundPool *ap = MusterSoundPool(env, thiz);
	if (ap == NULL) return;
	ap->pause(channelID);
	}

	static void
	android_media_SoundPool_resume(JNIEnv *env, jobject thiz, jint channelID)
	{
	ALOGV("android_media_SoundPool_resume");
	SoundPool *ap = MusterSoundPool(env, thiz);
	if (ap == NULL) return;
	ap->resume(channelID);
	}

	static void
	android_media_SoundPool_autoPause(JNIEnv *env, jobject thiz)
	{
	ALOGV("android_media_SoundPool_autoPause");
	SoundPool *ap = MusterSoundPool(env, thiz);
	if (ap == NULL) return;
	ap->autoPause();
	}

	static void
	android_media_SoundPool_autoResume(JNIEnv *env, jobject thiz)
	{
	ALOGV("android_media_SoundPool_autoResume");
	SoundPool *ap = MusterSoundPool(env, thiz);
	if (ap == NULL) return;
	ap->autoResume();
	}

	static void
	android_media_SoundPool_stop(JNIEnv *env, jobject thiz, jint channelID)
	{
	ALOGV("android_media_SoundPool_stop");
	SoundPool *ap = MusterSoundPool(env, thiz);
	if (ap == NULL) return;
	ap->stop(channelID);
	}

	static void
	android_media_SoundPool_setVolume(JNIEnv *env, jobject thiz, jint channelID,
	float leftVolume, float rightVolume)
	{
	ALOGV("android_media_SoundPool_setVolume");
	SoundPool *ap = MusterSoundPool(env, thiz);
	if (ap == NULL) return;
	ap->setVolume(channelID, leftVolume, rightVolume);
	}

	static void
	android_media_SoundPool_setPriority(JNIEnv *env, jobject thiz, jint channelID,
	int priority)
	{
	ALOGV("android_media_SoundPool_setPriority");
	SoundPool *ap = MusterSoundPool(env, thiz);
	if (ap == NULL) return;
	ap->setPriority(channelID, priority);
	}

	static void
	android_media_SoundPool_setLoop(JNIEnv *env, jobject thiz, jint channelID,
	int loop)
	{
	ALOGV("android_media_SoundPool_setLoop");
	SoundPool *ap = MusterSoundPool(env, thiz);
	if (ap == NULL) return;
	ap->setLoop(channelID, loop);
	}

	static void
	android_media_SoundPool_setRate(JNIEnv *env, jobject thiz, jint channelID,
	float rate)
	{
	ALOGV("android_media_SoundPool_setRate");
	SoundPool *ap = MusterSoundPool(env, thiz);
	if (ap == NULL) return;
	ap->setRate(channelID, rate);
	}

	static void android_media_callback(SoundPoolEvent event, SoundPool* soundPool, void* user)
	{
	ALOGV("callback: (%d, %d, %d, %p, %p)", event.mMsg, event.mArg1, event.mArg2, soundPool, user);
	JNIEnv *env = AndroidRuntime::getJNIEnv();
	env->CallStaticVoidMethod(fields.mSoundPoolClass, fields.mPostEvent, user, event.mMsg, event.mArg1, event.mArg2, NULL);
	}

	static jint
	android_media_SoundPool_native_setup(JNIEnv *env, jobject thiz, jobject weakRef, jint maxChannels, jint streamType, jint srcQuality)
	{
	ALOGV("android_media_SoundPool_native_setup");
	SoundPool *ap = new SoundPool(maxChannels, (audio_stream_type_t) streamType, srcQuality);
	if (ap == NULL) {
	return -1;
	}

	// save pointer to SoundPool C++ object in opaque field in Java object
	env->SetIntField(thiz, fields.mNativeContext, (int)ap);

	// set callback with weak reference
	jobject globalWeakRef = env->NewGlobalRef(weakRef);
	ap->setCallback(android_media_callback, globalWeakRef);
	return 0;
	}

	static void
	android_media_SoundPool_release(JNIEnv *env, jobject thiz)
	{
	ALOGV("android_media_SoundPool_release");
	SoundPool *ap = MusterSoundPool(env, thiz);
	if (ap != NULL) {

	// release weak reference
	jobject weakRef = (jobject) ap->getUserData();
	if (weakRef != NULL) {
	env->DeleteGlobalRef(weakRef);
	}

	// clear callback and native context
	ap->setCallback(NULL, NULL);
	env->SetIntField(thiz, fields.mNativeContext, 0);
	delete ap;
	}
	}

	// ----------------------------------------------------------------------------

	// Dalvik VM type signatures
	static JNINativeMethod gMethods[] = {
	{ "_load",
	"(Ljava/lang/String;I)I",
	(void *)android_media_SoundPool_load_URL
	},
	{ "_load",
	"(Ljava/io/FileDescriptor;JJI)I",
	(void *)android_media_SoundPool_load_FD
	},
	{ "unload",
	"(I)Z",
	(void *)android_media_SoundPool_unload
	},
	{ "play",
	"(IFFIIF)I",
	(void *)android_media_SoundPool_play
	},
	{ "pause",
	"(I)V",
	(void *)android_media_SoundPool_pause
	},
	{ "resume",
	"(I)V",
	(void *)android_media_SoundPool_resume
	},
	{ "autoPause",
	"()V",
	(void *)android_media_SoundPool_autoPause
	},
	{ "autoResume",
	"()V",
	(void *)android_media_SoundPool_autoResume
	},
	{ "stop",
	"(I)V",
	(void *)android_media_SoundPool_stop
	},
	{ "setVolume",
	"(IFF)V",
	(void *)android_media_SoundPool_setVolume
	},
	{ "setPriority",
	"(II)V",
	(void *)android_media_SoundPool_setPriority
	},
	{ "setLoop",
	"(II)V",
	(void *)android_media_SoundPool_setLoop
	},
	{ "setRate",
	"(IF)V",
	(void *)android_media_SoundPool_setRate
	},
	{ "native_setup",
	"(Ljava/lang/Object;III)I",
	(void*)android_media_SoundPool_native_setup
	},
	{ "release",
	"()V",
	(void*)android_media_SoundPool_release
	}
	};

	static const char* const kClassPathName = "android/media/SoundPool";

	jint JNI_OnLoad(JavaVM* vm, void* reserved)
	{
	JNIEnv* env = NULL;
	jint result = -1;
	jclass clazz;

	if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) {
	ALOGE("ERROR: GetEnv failed\n");
	goto bail;
	}
	assert(env != NULL);

	clazz = env->FindClass(kClassPathName);
	if (clazz == NULL) {
	ALOGE("Can't find %s", kClassPathName);
	goto bail;
	}

	fields.mNativeContext = env->GetFieldID(clazz, "mNativeContext", "I");
	if (fields.mNativeContext == NULL) {
	ALOGE("Can't find SoundPool.mNativeContext");
	goto bail;
	}

	fields.mPostEvent = env->GetStaticMethodID(clazz, "postEventFromNative",
	"(Ljava/lang/Object;IIILjava/lang/Object;)V");
	if (fields.mPostEvent == NULL) {
	ALOGE("Can't find android/media/SoundPool.postEventFromNative");
	goto bail;
	}

	// create a reference to class. Technically, we're leaking this reference
	// since it's a static object.
	fields.mSoundPoolClass = (jclass) env->NewGlobalRef(clazz);

	if (AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods)) < 0)
	goto bail;

	/* success -- return valid version number */
	result = JNI_VERSION_1_4;

	bail:
	return result;
	}