1 /*
2  * Copyright (C) 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 #ifndef ANDROID_HARDWARE_DRM_V1_0__CRYPTOPLUGIN_H
18 #define ANDROID_HARDWARE_DRM_V1_0__CRYPTOPLUGIN_H
19 
20 #include <android-base/thread_annotations.h>
21 #include <android/hardware/drm/1.0/ICryptoPlugin.h>
22 #include <android/hidl/memory/1.0/IMemory.h>
23 #include <hidl/Status.h>
24 #include <media/hardware/CryptoAPI.h>
25 
26 #include <mutex>
27 
28 namespace android {
29 namespace hardware {
30 namespace drm {
31 namespace V1_0 {
32 namespace implementation {
33 
34 using ::android::hardware::drm::V1_0::DestinationBuffer;
35 using ::android::hardware::drm::V1_0::ICryptoPlugin;
36 using ::android::hardware::drm::V1_0::Mode;
37 using ::android::hardware::drm::V1_0::Pattern;
38 using ::android::hardware::drm::V1_0::SubSample;
39 using ::android::hardware::hidl_array;
40 using ::android::hardware::hidl_string;
41 using ::android::hardware::hidl_vec;
42 using ::android::hardware::Return;
43 using ::android::hardware::Void;
44 using ::android::hidl::memory::V1_0::IMemory;
45 using ::android::sp;
46 
47 struct CryptoPlugin : public ICryptoPlugin {
CryptoPluginCryptoPlugin48     CryptoPlugin(android::CryptoPlugin *plugin) : mLegacyPlugin(plugin) {}
49 
~CryptoPluginCryptoPlugin50     ~CryptoPlugin() {delete mLegacyPlugin;}
51 
52     // Methods from ::android::hardware::drm::V1_0::ICryptoPlugin
53     // follow.
54 
55     Return<bool> requiresSecureDecoderComponent(const hidl_string& mime)
56             override;
57 
58     Return<void> notifyResolution(uint32_t width, uint32_t height) override;
59 
60     Return<Status> setMediaDrmSession(const hidl_vec<uint8_t>& sessionId)
61             override;
62 
63     Return<void> setSharedBufferBase(const ::android::hardware::hidl_memory& base,
64         uint32_t bufferId) override;
65 
66     Return<void> decrypt(
67             bool secure, const hidl_array<uint8_t, 16>& keyId, const hidl_array<uint8_t, 16>& iv,
68             Mode mode, const Pattern& pattern, const hidl_vec<SubSample>& subSamples,
69             const SharedBuffer& source, uint64_t offset, const DestinationBuffer& destination,
70             decrypt_cb _hidl_cb) override NO_THREAD_SAFETY_ANALYSIS;  // use unique_lock
71 
72   private:
73     android::CryptoPlugin *mLegacyPlugin;
74     std::map<uint32_t, sp<IMemory>> mSharedBufferMap GUARDED_BY(mSharedBufferLock);
75 
76     CryptoPlugin() = delete;
77     CryptoPlugin(const CryptoPlugin &) = delete;
78     void operator=(const CryptoPlugin &) = delete;
79 
80     std::mutex mSharedBufferLock;
81 };
82 
83 }  // namespace implementation
84 }  // namespace V1_0
85 }  // namespace drm
86 }  // namespace hardware
87 }  // namespace android
88 
89 #endif  // ANDROID_HARDWARE_DRM_V1_0__CRYPTOPLUGIN_H
90