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      1 /*
      2  * Copyright (C) 2014 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 "NdkMediaCrypto"
     19 
     20 
     21 #include <media/NdkMediaCrypto.h>
     22 #include <media/NdkMediaCodec.h>
     23 #include <media/NdkMediaFormatPriv.h>
     24 
     25 
     26 #include <cutils/properties.h>
     27 #include <utils/Log.h>
     28 #include <utils/StrongPointer.h>
     29 #include <binder/IServiceManager.h>
     30 #include <media/ICrypto.h>
     31 #include <media/IMediaDrmService.h>
     32 #include <android_util_Binder.h>
     33 
     34 #include <jni.h>
     35 
     36 using namespace android;
     37 
     38 static sp<ICrypto> makeCrypto() {
     39     sp<IServiceManager> sm = defaultServiceManager();
     40     sp<IBinder> binder = sm->getService(String16("media.drm"));
     41 
     42     sp<IMediaDrmService> service = interface_cast<IMediaDrmService>(binder);
     43     if (service == NULL) {
     44         return NULL;
     45     }
     46 
     47     sp<ICrypto> crypto = service->makeCrypto();
     48     if (crypto == NULL || (crypto->initCheck() != OK && crypto->initCheck() != NO_INIT)) {
     49         return NULL;
     50     }
     51     return crypto;
     52 }
     53 
     54 struct AMediaCrypto {
     55     sp<ICrypto> mCrypto;
     56 };
     57 
     58 
     59 extern "C" {
     60 
     61 
     62 EXPORT
     63 bool AMediaCrypto_isCryptoSchemeSupported(const AMediaUUID uuid) {
     64     sp<ICrypto> crypto = makeCrypto();
     65     if (crypto == NULL) {
     66         return false;
     67     }
     68     return crypto->isCryptoSchemeSupported(uuid);
     69 }
     70 
     71 EXPORT
     72 bool AMediaCrypto_requiresSecureDecoderComponent(const char *mime) {
     73     sp<ICrypto> crypto = makeCrypto();
     74     if (crypto == NULL) {
     75         return false;
     76     }
     77     return crypto->requiresSecureDecoderComponent(mime);
     78 }
     79 
     80 EXPORT
     81 AMediaCrypto* AMediaCrypto_new(const AMediaUUID uuid, const void *data, size_t datasize) {
     82 
     83     sp<ICrypto> tmp = makeCrypto();
     84     if (tmp == NULL) {
     85         return NULL;
     86     }
     87 
     88     if (tmp->createPlugin(uuid, data, datasize) != 0) {
     89         return NULL;
     90     }
     91 
     92     AMediaCrypto *crypto = new AMediaCrypto();
     93     crypto->mCrypto = tmp;
     94 
     95     return crypto;
     96 }
     97 
     98 EXPORT
     99 void AMediaCrypto_delete(AMediaCrypto* crypto) {
    100     delete crypto;
    101 }
    102 
    103 
    104 
    105 } // extern "C"
    106 
    107