| /* |
| * Copyright 2015, 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. |
| */ |
| |
| #ifndef _ANDROID_MEDIA_MEDIADATASOURCE_H_ |
| #define _ANDROID_MEDIA_MEDIADATASOURCE_H_ |
| |
| #include "jni.h" |
| |
| #include <media/IDataSource.h> |
| #include <media/stagefright/foundation/ABase.h> |
| #include <utils/Errors.h> |
| #include <utils/Mutex.h> |
| |
| namespace android { |
| |
| // The native counterpart to a Java android.media.MediaDataSource. It inherits from |
| // IDataSource so that it can be accessed remotely. |
| // |
| // If the java DataSource returns an error or throws an exception it |
| // will be considered to be in a broken state, and the only further call this |
| // will make is to close(). |
| class JMediaDataSource : public BnDataSource { |
| public: |
| enum { |
| kBufferSize = 64 * 1024, |
| }; |
| |
| JMediaDataSource(JNIEnv *env, jobject source); |
| virtual ~JMediaDataSource(); |
| |
| virtual sp<IMemory> getIMemory(); |
| virtual ssize_t readAt(off64_t offset, size_t size); |
| virtual status_t getSize(off64_t* size); |
| virtual void close(); |
| |
| private: |
| // Protect all member variables with mLock because this object will be |
| // accessed on different binder worker threads. |
| Mutex mLock; |
| |
| // The status of the java DataSource. Set to OK unless an error occurred or |
| // close() was called. |
| status_t mJavaObjStatus; |
| // Only call the java getSize() once so the app can't change the size on us. |
| bool mSizeIsCached; |
| off64_t mCachedSize; |
| sp<IMemory> mMemory; |
| |
| jobject mMediaDataSourceObj; |
| jmethodID mReadMethod; |
| jmethodID mGetSizeMethod; |
| jmethodID mCloseMethod; |
| jbyteArray mByteArrayObj; |
| |
| DISALLOW_EVIL_CONSTRUCTORS(JMediaDataSource); |
| }; |
| |
| } // namespace android |
| |
| #endif // _ANDROID_MEDIA_MEDIADATASOURCE_H_ |