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      1 /*
      2  * Copyright (C) 2018 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 "hidl_ClearKeyDrmFactory"
     19 #include <utils/Log.h>
     20 
     21 #include <utils/Errors.h>
     22 
     23 #include "DrmFactory.h"
     24 
     25 #include "DrmPlugin.h"
     26 #include "ClearKeyUUID.h"
     27 #include "MimeType.h"
     28 #include "SessionLibrary.h"
     29 
     30 namespace android {
     31 namespace hardware {
     32 namespace drm {
     33 namespace V1_2 {
     34 namespace clearkey {
     35 
     36 using ::android::hardware::drm::V1_0::Status;
     37 using ::android::hardware::drm::V1_1::SecurityLevel;
     38 using ::android::hardware::Void;
     39 
     40 Return<bool> DrmFactory::isCryptoSchemeSupported(
     41         const hidl_array<uint8_t, 16>& uuid) {
     42     return clearkeydrm::isClearKeyUUID(uuid.data());
     43 }
     44 
     45 Return<bool> DrmFactory::isCryptoSchemeSupported_1_2(const hidl_array<uint8_t, 16>& uuid,
     46                                                      const hidl_string &mimeType,
     47                                                      SecurityLevel level) {
     48     return isCryptoSchemeSupported(uuid) && isContentTypeSupported(mimeType) &&
     49             level == SecurityLevel::SW_SECURE_CRYPTO;
     50 }
     51 
     52 Return<bool> DrmFactory::isContentTypeSupported(const hidl_string &mimeType) {
     53     // This should match the mimeTypes handed by InitDataParser.
     54     return mimeType == kIsoBmffVideoMimeType ||
     55             mimeType == kIsoBmffAudioMimeType ||
     56             mimeType == kCencInitDataFormat ||
     57             mimeType == kWebmVideoMimeType ||
     58             mimeType == kWebmAudioMimeType ||
     59             mimeType == kWebmInitDataFormat;
     60 }
     61 
     62 Return<void> DrmFactory::createPlugin(
     63     const hidl_array<uint8_t, 16>& uuid,
     64     const hidl_string& appPackageName,
     65     createPlugin_cb _hidl_cb) {
     66     UNUSED(appPackageName);
     67 
     68     DrmPlugin *plugin = NULL;
     69     if (!isCryptoSchemeSupported(uuid.data())) {
     70         ALOGE("Clear key Drm HAL: failed to create drm plugin, " \
     71                 "invalid crypto scheme");
     72         _hidl_cb(Status::BAD_VALUE, plugin);
     73         return Void();
     74     }
     75 
     76     plugin = new DrmPlugin(SessionLibrary::get());
     77     _hidl_cb(Status::OK, plugin);
     78     return Void();
     79 }
     80 
     81 } // namespace clearkey
     82 } // namespace V1_2
     83 } // namespace drm
     84 } // namespace hardware
     85 } // namespace android
     86