Home | History | Annotate | Download | only in jni 
      1 /*
      2  * Copyright 2017, 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 #ifndef _ANDROID_MEDIA_DESCRAMBLER_H_
     18 #define _ANDROID_MEDIA_DESCRAMBLER_H_
     19 
     20 #include "jni.h"
     21 
     22 #include <binder/Status.h>
     23 #include <media/cas/DescramblerAPI.h>
     24 #include <media/stagefright/foundation/ABase.h>
     25 #include <utils/Mutex.h>
     26 #include <utils/RefBase.h>
     27 
     28 namespace android {
     29 class IMemory;
     30 class MemoryDealer;
     31 namespace media {
     32 class IDescrambler;
     33 };
     34 using namespace media;
     35 using binder::Status;
     36 
     37 struct JDescrambler : public RefBase {
     38     JDescrambler(JNIEnv *env, jobject descramberBinderObj);
     39 
     40     Status descramble(
     41             jbyte key,
     42             size_t numSubSamples,
     43             ssize_t totalLength,
     44             DescramblerPlugin::SubSample *subSamples,
     45             const void *srcPtr,
     46             jint srcOffset,
     47             void *dstPtr,
     48             jint dstOffset,
     49             ssize_t *result);
     50 
     51 protected:
     52     virtual ~JDescrambler();
     53 
     54 private:
     55     sp<IDescrambler> mDescrambler;
     56     sp<IMemory> mMem;
     57     sp<MemoryDealer> mDealer;
     58     Mutex mSharedMemLock;
     59 
     60     void ensureBufferCapacity(size_t neededSize);
     61 
     62     DISALLOW_EVIL_CONSTRUCTORS(JDescrambler);
     63 };
     64 
     65 }  // namespace android
     66 
     67 #endif  // _ANDROID_MEDIA_DESCRAMBLER_H_
     68