2 * Copyright 2013, The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 //#define LOG_NDEBUG 0
18 #define LOG_TAG "MediaHTTPConnection-JNI"
19 #include <utils/Log.h>
21 #include <binder/MemoryDealer.h>
22 #include <media/stagefright/foundation/ADebug.h>
23 #include <nativehelper/ScopedLocalRef.h>
25 #include "android_media_MediaHTTPConnection.h"
26 #include "android_util_Binder.h"
28 #include "android_runtime/AndroidRuntime.h"
34 JMediaHTTPConnection::JMediaHTTPConnection(JNIEnv *env, jobject thiz)
38 jclass clazz = env->GetObjectClass(thiz);
41 mClass = (jclass)env->NewGlobalRef(clazz);
42 mObject = env->NewWeakGlobalRef(thiz);
44 mDealer = new MemoryDealer(kBufferSize, "MediaHTTPConnection");
45 mMemory = mDealer->allocate(kBufferSize);
47 ScopedLocalRef<jbyteArray> tmp(
48 env, env->NewByteArray(JMediaHTTPConnection::kBufferSize));
50 mByteArrayObj = (jbyteArray)env->NewGlobalRef(tmp.get());
53 JMediaHTTPConnection::~JMediaHTTPConnection() {
54 JNIEnv *env = AndroidRuntime::getJNIEnv();
56 env->DeleteGlobalRef(mByteArrayObj);
58 env->DeleteWeakGlobalRef(mObject);
60 env->DeleteGlobalRef(mClass);
64 sp<IMemory> JMediaHTTPConnection::getIMemory() {
68 jbyteArray JMediaHTTPConnection::getByteArrayObj() {
72 } // namespace android
74 using namespace android;
79 jmethodID readAtMethodID;
82 static fields_t gFields;
84 static sp<JMediaHTTPConnection> setObject(
85 JNIEnv *env, jobject thiz, const sp<JMediaHTTPConnection> &conn) {
86 sp<JMediaHTTPConnection> old =
87 (JMediaHTTPConnection *)env->GetLongField(thiz, gFields.context);
90 conn->incStrong(thiz);
95 env->SetLongField(thiz, gFields.context, (jlong)conn.get());
100 static sp<JMediaHTTPConnection> getObject(JNIEnv *env, jobject thiz) {
101 return (JMediaHTTPConnection *)env->GetLongField(thiz, gFields.context);
104 static void android_media_MediaHTTPConnection_native_init(JNIEnv *env) {
105 ScopedLocalRef<jclass> clazz(
106 env, env->FindClass("android/media/MediaHTTPConnection"));
107 CHECK(clazz.get() != NULL);
109 gFields.context = env->GetFieldID(clazz.get(), "mNativeContext", "J");
110 CHECK(gFields.context != NULL);
112 gFields.readAtMethodID = env->GetMethodID(clazz.get(), "readAt", "(J[BI)I");
115 static void android_media_MediaHTTPConnection_native_setup(
116 JNIEnv *env, jobject thiz) {
117 sp<JMediaHTTPConnection> conn = new JMediaHTTPConnection(env, thiz);
119 setObject(env, thiz, conn);
122 static void android_media_MediaHTTPConnection_native_finalize(
123 JNIEnv *env, jobject thiz) {
124 setObject(env, thiz, NULL);
127 static jobject android_media_MediaHTTPConnection_native_getIMemory(
128 JNIEnv *env, jobject thiz) {
129 sp<JMediaHTTPConnection> conn = getObject(env, thiz);
131 return javaObjectForIBinder(env, conn->getIMemory()->asBinder());
134 static jint android_media_MediaHTTPConnection_native_readAt(
135 JNIEnv *env, jobject thiz, jlong offset, jint size) {
136 sp<JMediaHTTPConnection> conn = getObject(env, thiz);
138 if (size > JMediaHTTPConnection::kBufferSize) {
139 size = JMediaHTTPConnection::kBufferSize;
142 jbyteArray byteArrayObj = conn->getByteArrayObj();
144 jint n = env->CallIntMethod(
145 thiz, gFields.readAtMethodID, offset, byteArrayObj, size);
148 env->GetByteArrayRegion(
152 (jbyte *)conn->getIMemory()->pointer());
158 static JNINativeMethod gMethods[] = {
159 { "native_getIMemory", "()Landroid/os/IBinder;",
160 (void *)android_media_MediaHTTPConnection_native_getIMemory },
162 { "native_readAt", "(JI)I",
163 (void *)android_media_MediaHTTPConnection_native_readAt },
165 { "native_init", "()V",
166 (void *)android_media_MediaHTTPConnection_native_init },
168 { "native_setup", "()V",
169 (void *)android_media_MediaHTTPConnection_native_setup },
171 { "native_finalize", "()V",
172 (void *)android_media_MediaHTTPConnection_native_finalize },
175 int register_android_media_MediaHTTPConnection(JNIEnv *env) {
176 return AndroidRuntime::registerNativeMethods(env,
177 "android/media/MediaHTTPConnection", gMethods, NELEM(gMethods));