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      1 /*
      2  * Copyright 2011, 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 "AndroidMediaUtils"
     19 
     20 #include <utils/Log.h>
     21 #include "android_media_Utils.h"
     22 
     23 namespace android {
     24 
     25 bool ConvertKeyValueArraysToKeyedVector(
     26         JNIEnv *env, jobjectArray keys, jobjectArray values,
     27         KeyedVector<String8, String8>* keyedVector) {
     28 
     29     int nKeyValuePairs = 0;
     30     bool failed = false;
     31     if (keys != NULL && values != NULL) {
     32         nKeyValuePairs = env->GetArrayLength(keys);
     33         failed = (nKeyValuePairs != env->GetArrayLength(values));
     34     }
     35 
     36     if (!failed) {
     37         failed = ((keys != NULL && values == NULL) ||
     38                   (keys == NULL && values != NULL));
     39     }
     40 
     41     if (failed) {
     42         LOGE("keys and values arrays have different length");
     43         jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
     44         return false;
     45     }
     46 
     47     for (int i = 0; i < nKeyValuePairs; ++i) {
     48         // No need to check on the ArrayIndexOutOfBoundsException, since
     49         // it won't happen here.
     50         jstring key = (jstring) env->GetObjectArrayElement(keys, i);
     51         jstring value = (jstring) env->GetObjectArrayElement(values, i);
     52 
     53         const char* keyStr = env->GetStringUTFChars(key, NULL);
     54         if (!keyStr) {  // OutOfMemoryError
     55             return false;
     56         }
     57 
     58         const char* valueStr = env->GetStringUTFChars(value, NULL);
     59         if (!valueStr) {  // OutOfMemoryError
     60             env->ReleaseStringUTFChars(key, keyStr);
     61             return false;
     62         }
     63 
     64         keyedVector->add(String8(keyStr), String8(valueStr));
     65 
     66         env->ReleaseStringUTFChars(key, keyStr);
     67         env->ReleaseStringUTFChars(value, valueStr);
     68         env->DeleteLocalRef(key);
     69         env->DeleteLocalRef(value);
     70     }
     71     return true;
     72 }
     73 
     74 }  // namespace android
     75 
     76