How to put a C char[] result into a jave BufferType variable ?
I have a serious problem; in fact i am interested in retrieving some data with JNI , my V function return a char [] and i want to store it in a ByteBuffer variable in the java code that invoke my C function :
unsigned char video[MAX_NB_CELL]; // variable declared and returned by the C function
ByteBufer MyVideo; // the java variable that is used to store the C Variable
in other words i am trying to have something like the following ; MyVideo = video
so how can i do it given that the 2 variables are not in the same type!!
thanks
This is a simple example on how to use [url http://java.sun.com/j2se/1.5.0/docs/guide/jni/spec/functions.html#new_direct_byte_buffer]NewDirectByteBuffer[/url]:// C:
char[] your_c_func(int * c_array_length) {
...
}
// JNI:
JNIEXPORT jobject JNICALL Java_YourClass_yourNativeMeth(JNIEnv * env, jobject obj) {
int c_array_length;
char[] c_array = your_c_func(&c_array_length);
jobject j_byte_buffer = (*env)->NewDirectByteBuffer(env, c_array, c_array_length);
return j_byte_buffer;
}
// Java:
class YourClass {
native ByteBuffer yourNativeMeth();
}
Regards
HI ,
I tried to retrieve the byte buffer as suggested but here is the error that i got !! can someone help me please!!
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# SIGSEGV (0xb) at pc=0xb29c45fe, pid=3773, tid=2982861744
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_05-b05 mixed mode, sharing)
# Problematic frame:
# J java.nio.DirectByteBuffer.get(I)B
#
# An error report file with more information is saved as hs_err_pid3773.log
#
# If you would like to submit a bug report, please visit:
#http://java.sun.com/webapps/bugreport/crash.jsp
#
