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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 "NdkMediaCrypto.h"
     22 #include "NdkMediaCodec.h"
     23 #include "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_runtime/AndroidRuntime.h>
     33 #include <android_util_Binder.h>
     34 
     35 #include <jni.h>
     36 
     37 using namespace android;
     38 
     39 static sp<ICrypto> makeCrypto() {
     40     sp<IServiceManager> sm = defaultServiceManager();
     41     sp<IBinder> binder = sm->getService(String16("media.drm"));
     42 
     43     sp<IMediaDrmService> service = interface_cast<IMediaDrmService>(binder);
     44     if (service == NULL) {
     45         return NULL;
     46     }
     47 
     48     sp<ICrypto> crypto = service->makeCrypto();
     49     if (crypto == NULL || (crypto->initCheck() != OK && crypto->initCheck() != NO_INIT)) {
     50         return NULL;
     51     }
     52     return crypto;
     53 }
     54 
     55 struct AMediaCrypto {
     56     sp<ICrypto> mCrypto;
     57 };
     58 
     59 
     60 extern "C" {
     61 
     62 
     63 EXPORT
     64 bool AMediaCrypto_isCryptoSchemeSupported(const AMediaUUID uuid) {
     65     sp<ICrypto> crypto = makeCrypto();
     66     if (crypto == NULL) {
     67         return false;
     68     }
     69     return crypto->isCryptoSchemeSupported(uuid);
     70 }
     71 
     72 EXPORT
     73 bool AMediaCrypto_requiresSecureDecoderComponent(const char *mime) {
     74     sp<ICrypto> crypto = makeCrypto();
     75     if (crypto == NULL) {
     76         return false;
     77     }
     78     return crypto->requiresSecureDecoderComponent(mime);
     79 }
     80 
     81 EXPORT
     82 AMediaCrypto* AMediaCrypto_new(const AMediaUUID uuid, const void *data, size_t datasize) {
     83 
     84     sp<ICrypto> tmp = makeCrypto();
     85     if (tmp == NULL) {
     86         return NULL;
     87     }
     88 
     89     if (tmp->createPlugin(uuid, data, datasize) != 0) {
     90         return NULL;
     91     }
     92 
     93     AMediaCrypto *crypto = new AMediaCrypto();
     94     crypto->mCrypto = tmp;
     95 
     96     return crypto;
     97 }
     98 
     99 EXPORT
    100 void AMediaCrypto_delete(AMediaCrypto* crypto) {
    101     delete crypto;
    102 }
    103 
    104 
    105 
    106 } // extern "C"
    107 
    108