1 /*
2  * Copyright (c) 2023 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef OHOS_DRM_I_MEDIA_DECRYPT_MODULE_SERVICE_H
17 #define OHOS_DRM_I_MEDIA_DECRYPT_MODULE_SERVICE_H
18 
19 #include "ipc_types.h"
20 #include "iremote_broker.h"
21 #include "iremote_proxy.h"
22 #include "iremote_stub.h"
23 
24 namespace OHOS {
25 namespace DrmStandard {
26 class IMediaDecryptModuleService : public IRemoteBroker {
27 public:
28     struct SubSample {
29         uint32_t clearHeaderLen;
30         uint32_t payLoadLen;
31     };
32 
33     struct Pattern {
34         uint32_t encryptBlocks;
35         uint32_t skipBlocks;
36     };
37 
38     enum CryptAlgorithmType {
39         ALGTYPE_UNENCRYPTED = 0,
40         ALGTYPE_AES_CTR,
41         ALGTYPE_AES_WV,
42         ALGTYPE_AES_CBC,
43         ALGTYPE_SM4_CBC,
44         ALGTYPE_SM4_CTR,
45     };
46 
47     struct CryptInfo {
48         CryptAlgorithmType type;
49         std::vector<uint8_t> keyId;
50         std::vector<uint8_t> iv;
51         Pattern pattern;
52         std::vector<SubSample> subSample;
53     };
54 
55     struct DrmBuffer {
56         uint32_t bufferType;
57         int fd;
58         uint32_t bufferLen;
59         uint32_t allocLen;
60         uint32_t filledLen;
61         uint32_t offset;
62         uint32_t sharedMemType;
63     };
64 
65     virtual ~IMediaDecryptModuleService() = default;
66     virtual int32_t Release() = 0;
67     virtual int32_t DecryptMediaData(bool secureDecodrtState, IMediaDecryptModuleService::CryptInfo &cryptInfo,
68         DrmBuffer &srcBuffer, DrmBuffer &dstBuffer) = 0;
69     DECLARE_INTERFACE_DESCRIPTOR(u"IMediaDecryptModuleService");
70 };
71 } // DrmStandard
72 } // OHOS
73 #endif // OHOS_DRM_I_MEDIA_DECRYPT_MODULE_SERVICE_H