稍微修改过的样本http://swig.10945.n7.nabble.com/Re-How-to-specify-access-to-a-java-nio-ByteBuffer-td6696.html小改动后应该可以工作(特别是%typemap(in) (char* pchOutput, int* outputSize))
因为我没有编译这个,只需运行 swig 来检查 java 端是否正确生成。
%typemap(in) (char* pchInput, int inputSize) {
$1 = JCALL1(GetDirectBufferAddress, jenv, $input);
$2 = (int)JCALL1(GetDirectBufferCapacity, jenv, $input);
}
%typemap(in) (char* pchOutput, int* outputSize) {
$1 = JCALL1(GetDirectBufferAddress, jenv, $input);
$2 = &((int)JCALL1(GetDirectBufferCapacity, jenv, $input));
}
/* These 3 typemaps tell SWIG what JNI and Java types to use */
%typemap(jni) (char* pchInput, int inputSize), (char* pchOutput, int* outputSize) "jobject"
%typemap(jtype) (char* pchInput, int inputSize), (char* pchOutput, int* outputSize) "java.nio.ByteBuffer"
%typemap(jstype) (char* pchInput, int inputSize), (char* pchOutput, int* outputSize) "java.nio.ByteBuffer"
%typemap(javain) (char* pchInput, int inputSize), (char* pchOutput, int* outputSize) "$javainput"
%typemap(javaout) (char* pchInput, int inputSize), (char* pchOutput, int* outputSize) {
return $jnicall;
}