blob: 2bc237e02b06430117d46df251388593109a5427 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/*
* 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_
|
