| /* |
| * Copyright 2012, The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| //#define LOG_NDEBUG 0 |
| #define LOG_TAG "MediaCrypto-JNI" |
| #include <utils/Log.h> |
| |
| #include "android_media_MediaCrypto.h" |
| |
| #include "android_runtime/AndroidRuntime.h" |
| #include "jni.h" |
| #include "JNIHelp.h" |
| |
| #include <binder/IServiceManager.h> |
| #include <media/ICrypto.h> |
| #include <media/IMediaPlayerService.h> |
| #include <media/stagefright/foundation/ADebug.h> |
| |
| namespace android { |
| |
| struct fields_t { |
| jfieldID context; |
| }; |
| |
| static fields_t gFields; |
| |
| static sp<JCrypto> getCrypto(JNIEnv *env, jobject thiz) { |
| return (JCrypto *)env->GetLongField(thiz, gFields.context); |
| } |
| |
| JCrypto::JCrypto( |
| JNIEnv *env, jobject thiz, |
| const uint8_t uuid[16], const void *initData, size_t initSize) { |
| mObject = env->NewWeakGlobalRef(thiz); |
| |
| mCrypto = MakeCrypto(uuid, initData, initSize); |
| } |
| |
| JCrypto::~JCrypto() { |
| mCrypto.clear(); |
| |
| JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| |
| env->DeleteWeakGlobalRef(mObject); |
| mObject = NULL; |
| } |
| |
| // static |
| sp<ICrypto> JCrypto::MakeCrypto() { |
| sp<IServiceManager> sm = defaultServiceManager(); |
| |
| sp<IBinder> binder = |
| sm->getService(String16("media.player")); |
| |
| sp<IMediaPlayerService> service = |
| interface_cast<IMediaPlayerService>(binder); |
| |
| if (service == NULL) { |
| return NULL; |
| } |
| |
| sp<ICrypto> crypto = service->makeCrypto(); |
| |
| if (crypto == NULL || (crypto->initCheck() != OK && crypto->initCheck() != NO_INIT)) { |
| return NULL; |
| } |
| |
| return crypto; |
| } |
| |
| // static |
| sp<ICrypto> JCrypto::MakeCrypto( |
| const uint8_t uuid[16], const void *initData, size_t initSize) { |
| sp<ICrypto> crypto = MakeCrypto(); |
| |
| if (crypto == NULL) { |
| return NULL; |
| } |
| |
| status_t err = crypto->createPlugin(uuid, initData, initSize); |
| |
| if (err != OK) { |
| return NULL; |
| } |
| |
| return crypto; |
| } |
| |
| bool JCrypto::requiresSecureDecoderComponent(const char *mime) const { |
| if (mCrypto == NULL) { |
| return false; |
| } |
| |
| return mCrypto->requiresSecureDecoderComponent(mime); |
| } |
| |
| // static |
| bool JCrypto::IsCryptoSchemeSupported(const uint8_t uuid[16]) { |
| sp<ICrypto> crypto = MakeCrypto(); |
| |
| if (crypto == NULL) { |
| return false; |
| } |
| |
| return crypto->isCryptoSchemeSupported(uuid); |
| } |
| |
| status_t JCrypto::initCheck() const { |
| return mCrypto == NULL ? NO_INIT : OK; |
| } |
| |
| // static |
| sp<ICrypto> JCrypto::GetCrypto(JNIEnv *env, jobject obj) { |
| jclass clazz = env->FindClass("android/media/MediaCrypto"); |
| CHECK(clazz != NULL); |
| |
| if (!env->IsInstanceOf(obj, clazz)) { |
| return NULL; |
| } |
| |
| sp<JCrypto> jcrypto = getCrypto(env, obj); |
| |
| if (jcrypto == NULL) { |
| return NULL; |
| } |
| |
| return jcrypto->mCrypto; |
| } |
| |
| // JNI conversion utilities |
| static Vector<uint8_t> JByteArrayToVector(JNIEnv *env, jbyteArray const &byteArray) { |
| Vector<uint8_t> vector; |
| size_t length = env->GetArrayLength(byteArray); |
| vector.insertAt((size_t)0, length); |
| env->GetByteArrayRegion(byteArray, 0, length, (jbyte *)vector.editArray()); |
| return vector; |
| } |
| |
| } // namespace android |
| |
| using namespace android; |
| |
| static sp<JCrypto> setCrypto( |
| JNIEnv *env, jobject thiz, const sp<JCrypto> &crypto) { |
| sp<JCrypto> old = (JCrypto *)env->GetLongField(thiz, gFields.context); |
| if (crypto != NULL) { |
| crypto->incStrong(thiz); |
| } |
| if (old != NULL) { |
| old->decStrong(thiz); |
| } |
| env->SetLongField(thiz, gFields.context, (jlong)crypto.get()); |
| |
| return old; |
| } |
| |
| static void android_media_MediaCrypto_release(JNIEnv *env, jobject thiz) { |
| setCrypto(env, thiz, NULL); |
| } |
| |
| static void android_media_MediaCrypto_native_init(JNIEnv *env) { |
| jclass clazz = env->FindClass("android/media/MediaCrypto"); |
| CHECK(clazz != NULL); |
| |
| gFields.context = env->GetFieldID(clazz, "mNativeContext", "J"); |
| CHECK(gFields.context != NULL); |
| } |
| |
| static void android_media_MediaCrypto_native_setup( |
| JNIEnv *env, jobject thiz, |
| jbyteArray uuidObj, jbyteArray initDataObj) { |
| jsize uuidLength = env->GetArrayLength(uuidObj); |
| |
| if (uuidLength != 16) { |
| jniThrowException( |
| env, |
| "java/lang/IllegalArgumentException", |
| NULL); |
| return; |
| } |
| |
| jboolean isCopy; |
| jbyte *uuid = env->GetByteArrayElements(uuidObj, &isCopy); |
| |
| jsize initDataLength = 0; |
| jbyte *initData = NULL; |
| |
| if (initDataObj != NULL) { |
| initDataLength = env->GetArrayLength(initDataObj); |
| initData = env->GetByteArrayElements(initDataObj, &isCopy); |
| } |
| |
| sp<JCrypto> crypto = new JCrypto( |
| env, thiz, (const uint8_t *)uuid, initData, initDataLength); |
| |
| status_t err = crypto->initCheck(); |
| |
| if (initDataObj != NULL) { |
| env->ReleaseByteArrayElements(initDataObj, initData, 0); |
| initData = NULL; |
| } |
| |
| env->ReleaseByteArrayElements(uuidObj, uuid, 0); |
| uuid = NULL; |
| |
| if (err != OK) { |
| jniThrowException( |
| env, |
| "android/media/MediaCryptoException", |
| "Failed to instantiate crypto object."); |
| return; |
| } |
| |
| setCrypto(env,thiz, crypto); |
| } |
| |
| static void android_media_MediaCrypto_native_finalize( |
| JNIEnv *env, jobject thiz) { |
| android_media_MediaCrypto_release(env, thiz); |
| } |
| |
| static jboolean android_media_MediaCrypto_isCryptoSchemeSupportedNative( |
| JNIEnv *env, jobject /* thiz */, jbyteArray uuidObj) { |
| jsize uuidLength = env->GetArrayLength(uuidObj); |
| |
| if (uuidLength != 16) { |
| jniThrowException( |
| env, |
| "java/lang/IllegalArgumentException", |
| NULL); |
| return JNI_FALSE; |
| } |
| |
| jboolean isCopy; |
| jbyte *uuid = env->GetByteArrayElements(uuidObj, &isCopy); |
| |
| bool result = JCrypto::IsCryptoSchemeSupported((const uint8_t *)uuid); |
| |
| env->ReleaseByteArrayElements(uuidObj, uuid, 0); |
| uuid = NULL; |
| |
| return result ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| static jboolean android_media_MediaCrypto_requiresSecureDecoderComponent( |
| JNIEnv *env, jobject thiz, jstring mimeObj) { |
| if (mimeObj == NULL) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| return JNI_FALSE; |
| } |
| |
| sp<JCrypto> crypto = getCrypto(env, thiz); |
| |
| if (crypto == NULL) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| return JNI_FALSE; |
| } |
| |
| const char *mime = env->GetStringUTFChars(mimeObj, NULL); |
| |
| if (mime == NULL) { |
| return JNI_FALSE; |
| } |
| |
| bool result = crypto->requiresSecureDecoderComponent(mime); |
| |
| env->ReleaseStringUTFChars(mimeObj, mime); |
| mime = NULL; |
| |
| return result ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| static void android_media_MediaCrypto_setMediaDrmSession( |
| JNIEnv *env, jobject thiz, jbyteArray jsessionId) { |
| if (jsessionId == NULL) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| return; |
| } |
| |
| sp<ICrypto> crypto = JCrypto::GetCrypto(env, thiz); |
| |
| if (crypto == NULL) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| return; |
| } |
| |
| Vector<uint8_t> sessionId(JByteArrayToVector(env, jsessionId)); |
| |
| status_t err = crypto->setMediaDrmSession(sessionId); |
| |
| if (err != OK) { |
| String8 msg("setMediaDrmSession failed"); |
| if (err == ERROR_DRM_SESSION_NOT_OPENED) { |
| msg += ": session not opened"; |
| } else if (err == ERROR_UNSUPPORTED) { |
| msg += ": not supported by this crypto scheme"; |
| } else if (err == NO_INIT) { |
| msg += ": crypto plugin not initialized"; |
| } else { |
| msg.appendFormat(": general failure (%d)", err); |
| } |
| jniThrowException(env, "android/media/MediaCryptoException", msg.string()); |
| } |
| } |
| |
| static JNINativeMethod gMethods[] = { |
| { "release", "()V", (void *)android_media_MediaCrypto_release }, |
| { "native_init", "()V", (void *)android_media_MediaCrypto_native_init }, |
| |
| { "native_setup", "([B[B)V", |
| (void *)android_media_MediaCrypto_native_setup }, |
| |
| { "native_finalize", "()V", |
| (void *)android_media_MediaCrypto_native_finalize }, |
| |
| { "isCryptoSchemeSupportedNative", "([B)Z", |
| (void *)android_media_MediaCrypto_isCryptoSchemeSupportedNative }, |
| |
| { "requiresSecureDecoderComponent", "(Ljava/lang/String;)Z", |
| (void *)android_media_MediaCrypto_requiresSecureDecoderComponent }, |
| |
| { "setMediaDrmSession", "([B)V", |
| (void *)android_media_MediaCrypto_setMediaDrmSession }, |
| }; |
| |
| int register_android_media_Crypto(JNIEnv *env) { |
| return AndroidRuntime::registerNativeMethods(env, |
| "android/media/MediaCrypto", gMethods, NELEM(gMethods)); |
| } |
| |