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 NUPLAYER2_DRM_H_
18 #define NUPLAYER2_DRM_H_
19 
20 #include <media/NdkMediaExtractor.h>
21 #include <media/stagefright/foundation/ABuffer.h>
22 
23 #include <utils/String8.h>
24 #include <utils/Vector.h>
25 
26 namespace android {
27 
28     struct DrmUUID {
29         static const int UUID_SIZE = 16;
30 
DrmUUIDDrmUUID31         DrmUUID() {
32             memset(this->uuid, 0, sizeof(uuid));
33         }
34 
35         // to allow defining Vector/KeyedVector of UUID type
DrmUUIDDrmUUID36         DrmUUID(const DrmUUID &a) {
37             memcpy(this->uuid, a.uuid, sizeof(uuid));
38         }
39 
40         // to allow defining Vector/KeyedVector of UUID type
DrmUUIDDrmUUID41         DrmUUID(const uint8_t uuid_in[UUID_SIZE]) {
42             memcpy(this->uuid, uuid_in, sizeof(uuid));
43         }
44 
ptrDrmUUID45         const uint8_t *ptr() const {
46             return uuid;
47         }
48 
toHexStringDrmUUID49         String8 toHexString() const {
50             return arrayToHex(uuid, UUID_SIZE);
51         }
52 
toHexStringDrmUUID53         static String8 toHexString(const uint8_t uuid_in[UUID_SIZE]) {
54             return arrayToHex(uuid_in, UUID_SIZE);
55         }
56 
arrayToHexDrmUUID57         static String8 arrayToHex(const uint8_t *array, int bytes) {
58             String8 result;
59             for (int i = 0; i < bytes; i++) {
60                 result.appendFormat("%02x", array[i]);
61             }
62 
63             return result;
64         }
65 
66     protected:
67         uint8_t uuid[UUID_SIZE];
68     };
69 
70 
71     struct NuPlayer2Drm {
72 
73         // static helpers - internal
74 
75     protected:
76         static Vector<DrmUUID> parsePSSH(const void *pssh, size_t psshsize);
77         static Vector<DrmUUID> getSupportedDrmSchemes(const void *pssh, size_t psshsize);
78 
79         // static helpers - public
80 
81     public:
82         static sp<ABuffer> retrieveDrmInfo(const void *pssh, uint32_t psshsize);
83         static sp<ABuffer> retrieveDrmInfo(PsshInfo *);
84 
85     };  // NuPlayer2Drm
86 
87 }   // android
88 
89 #endif     //NUPLAYER2_DRM_H_
90