Copy array of struct to memory and back

[sgjava]

For I2C message you need to pass an array of structs:

struct i2c_msg {
	__u16 addr;
	__u16 flags;
#define I2C_M_TEN		0x0010
#define I2C_M_RD		0x0001
#define I2C_M_STOP		0x8000
#define I2C_M_NOSTART		0x4000
#define I2C_M_REV_DIR_ADDR	0x2000
#define I2C_M_IGNORE_NAK	0x1000
#define I2C_M_NO_RD_ACK		0x0800
#define I2C_M_RECV_LEN		0x0400
	__u16 len;
	__u8 *buf;
};

So I defined:

@JniClass(name = "i2c_msg", flags = {STRUCT})
public static class i2cMsg {

    static {
        LIBRARY.load();
        init();
    }

    @JniMethod(flags = {CONSTANT_INITIALIZER})
    private static native void init();
    @JniField(flags = {CONSTANT}, accessor = "sizeof(struct i2c_msg)")
    public static int SIZEOF;

    public short addr;
    public short flags;
    public short len;
    public byte[] buf;
}

And I need 2 messages for a I2C read operation:

@JniMethod(accessor = "memmove")
public static final native void i2cMsgToMem(
@JniArg(cast = "void *") long dest, @JniArg(cast = "const void *", flags = {NO_OUT, CRITICAL}) i2cMsg src, @JniArg(
cast = "size_t") long size);

The above doesn't work for i2cMsg[].