1 /*
2 * Copyright 2016, 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 //#define LOG_NDEBUG 0
18 #define LOG_TAG "BufferImpl"
19 #include <utils/Log.h>
20
21 #include <binder/IMemory.h>
22 #include <media/stagefright/foundation/ABuffer.h>
23 #include <media/stagefright/foundation/AMessage.h>
24 #include <mediadrm/ICrypto.h>
25 #include <utils/NativeHandle.h>
26
27 #include "include/SecureBuffer.h"
28 #include "include/SharedMemoryBuffer.h"
29
30 namespace android {
31
32 // SharedMemoryBuffer
33
SharedMemoryBuffer(const sp<AMessage> & format,const sp<IMemory> & mem)34 SharedMemoryBuffer::SharedMemoryBuffer(const sp<AMessage> &format, const sp<IMemory> &mem)
35 // TODO: Using unsecurePointer() has some associated security pitfalls
36 // (see declaration for details).
37 // Either document why it is safe in this case or address the
38 // issue (e.g. by copying).
39 : MediaCodecBuffer(format, new ABuffer(mem->unsecurePointer(), mem->size())),
40 mMemory(mem) {
41 }
42
SharedMemoryBuffer(const sp<AMessage> & format,const sp<TMemory> & mem)43 SharedMemoryBuffer::SharedMemoryBuffer(const sp<AMessage> &format, const sp<TMemory> &mem)
44 : MediaCodecBuffer(format, new ABuffer(mem->getPointer(), mem->getSize())),
45 mTMemory(mem) {
46 }
47
48 // SecureBuffer
49
SecureBuffer(const sp<AMessage> & format,const void * ptr,size_t size)50 SecureBuffer::SecureBuffer(const sp<AMessage> &format, const void *ptr, size_t size)
51 : MediaCodecBuffer(format, new ABuffer(nullptr, size)),
52 mPointer(ptr) {
53 }
54
SecureBuffer(const sp<AMessage> & format,const sp<NativeHandle> & handle,size_t size)55 SecureBuffer::SecureBuffer(
56 const sp<AMessage> &format, const sp<NativeHandle> &handle, size_t size)
57 : MediaCodecBuffer(format, new ABuffer(nullptr, size)),
58 mPointer(nullptr),
59 mHandle(handle) {
60 }
61
getDestinationPointer()62 void *SecureBuffer::getDestinationPointer() {
63 return (void *)(mHandle == nullptr ? mPointer : mHandle->handle());
64 }
65
getDestinationType()66 ICrypto::DestinationType SecureBuffer::getDestinationType() {
67 return ICrypto::kDestinationTypeNativeHandle;
68 }
69
70 } // namespace android
71