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1 /*
2  * Copyright (C) 2013 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 #include "outputstream_wrapper.h"
18 #include "error_codes.h"
19 
20 jmethodID OutputStreamWrapper::sWriteID = NULL;
21 
write(int32_t length,int32_t offset)22 int32_t OutputStreamWrapper::write(int32_t length, int32_t offset) {
23     if (offset < 0 || length < 0 || (offset + length) > getBufferSize()) {
24         return J_ERROR_BAD_ARGS;
25     }
26     mEnv->ReleaseByteArrayElements(mByteArray, mBytes, JNI_COMMIT);
27     mBytes = NULL;
28     if (mEnv->ExceptionCheck()) {
29         return J_EXCEPTION;
30     }
31     if (sWriteID == NULL) {
32         LOGE("Uninitialized method ID for OutputStream write function.");
33         return J_ERROR_FATAL;
34     }
35     // Call OutputStream write with byte array.
36     mEnv->CallVoidMethod(mStream, sWriteID, mByteArray, offset, length);
37     if (mEnv->ExceptionCheck()) {
38         return J_EXCEPTION;
39     }
40     mBytes = mEnv->GetByteArrayElements(mByteArray, NULL);
41     if (mBytes == NULL || mEnv->ExceptionCheck()) {
42         return J_EXCEPTION;
43     }
44     return J_SUCCESS;
45 }
46 
setWriteMethodID(jmethodID id)47 void OutputStreamWrapper::setWriteMethodID(jmethodID id) {
48     sWriteID = id;
49 }
50