android_frameworks_base/media/jni/soundpool/android_media_SoundPool.cpp
Elliott Hughes a3804cf77f You don't need to poke around inside FileDescriptor manually.
We can help you with that.

Note also that getParcelFileDescriptorFD did no such thing. All its callers
were passing in a regular java.io.FileDescriptor and expecting the int. No
ParcelFileDescriptors involved.

Change-Id: Idc233626f20c092e719f152562601f406cc1b64a
2011-04-11 17:04:01 -07:00

328 lines
9.3 KiB
C++

/*
* 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 "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)
{
LOGV("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)
{
LOGV("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) {
LOGV("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)
{
LOGV("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)
{
LOGV("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)
{
LOGV("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)
{
LOGV("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)
{
LOGV("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)
{
LOGV("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)
{
LOGV("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)
{
LOGV("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)
{
LOGV("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)
{
LOGV("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)
{
LOGV("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)
{
LOGV("android_media_SoundPool_native_setup");
SoundPool *ap = new SoundPool(maxChannels, 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)
{
LOGV("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) {
LOGE("ERROR: GetEnv failed\n");
goto bail;
}
assert(env != NULL);
clazz = env->FindClass(kClassPathName);
if (clazz == NULL) {
LOGE("Can't find %s", kClassPathName);
goto bail;
}
fields.mNativeContext = env->GetFieldID(clazz, "mNativeContext", "I");
if (fields.mNativeContext == NULL) {
LOGE("Can't find SoundPool.mNativeContext");
goto bail;
}
fields.mPostEvent = env->GetStaticMethodID(clazz, "postEventFromNative",
"(Ljava/lang/Object;IIILjava/lang/Object;)V");
if (fields.mPostEvent == NULL) {
LOGE("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;
}