/*
* Class: ch_ntb_usb_LibusbJava
* Method: usb_get_descriptor_by_endpoint
* Signature: (JIBBI)Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_ch_ntb_usb_LibusbJava_usb_1get_1descriptor_1by_1endpoint
(JNIEnv *env, jclass obj, jlong dev_handle, jint ep, jbyte type, jbyte index, jint size)
{
clearLibusbJavaError();
char *string = (char *) malloc(size * sizeof(char));
int retVal = usb_get_descriptor_by_endpoint((usb_dev_handle *) dev_handle, ep, (unsigned) type,
(unsigned) index, string, size);
if (retVal > 0)
return (*env)->NewStringUTF(env, string);
return 0;
}
static int l_usb_get_descriptor_by_endpoint(lua_State *L) {
struct usb_dev_handle * dev_handle = lua_touserdata(L, 1);
int ep = lua_tonumber (L, 2);
int type = lua_tonumber(L, 3);
int index = lua_tonumber (L, 4);
int size = lua_tonumber (L, 5);
if (size==0) {size=255;} //default value
char buf[size];
int ret = usb_get_descriptor_by_endpoint(dev_handle, ep,
(unsigned char)type, (unsigned char)index, buf, size);
if( ret < 0 ) {
lua_pushnil (L);
lua_pushnumber (L, ret);
return 2; /* number of results */
} else{
lua_pushlstring (L, buf, ret);
return 1; /* number of results */
}
}
/* USB::DevHandle#usb_get_descriptor_by_endpoint(endpoint, type, index, buf) */
static VALUE
rusb_get_descriptor_by_endpoint(
VALUE v,
VALUE vep,
VALUE vtype,
VALUE vindex,
VALUE vbuf)
{
usb_dev_handle *p = get_usb_devhandle(v);
int ep = NUM2INT(vep);
int type = NUM2INT(vtype);
int index = NUM2INT(vindex);
char *buf;
int buflen;
int ret;
StringValue(vbuf);
rb_str_modify(vbuf);
buf = RSTRING_PTR(vbuf);
buflen = RSTRING_LEN(vbuf);
ret = usb_get_descriptor_by_endpoint(p, ep, type, index, buf, buflen);
check_usb_error("usb_get_descriptor_by_endpoint", ret);
return INT2NUM(ret);
}
