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
28namespace android {
29class IMemory;
30class MemoryDealer;
31namespace media {
32class IDescrambler;
33};
34using namespace media;
35using binder::Status;
36
37struct 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
51protected:
52    virtual ~JDescrambler();
53
54private:
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