gp_get_set_bytes.h File Reference

Helper macros to get and set bytes. More...

#include <core/gp_byte_order.h>

Go to the source code of this file.

Macros
#define	GP_SWAP_BYTES2(v)
	Swaps 2 lower bytes in a pixel if pixel is in foreign endianity.
#define	GP_SWAP_BYTES3(v)
	Swaps 3 lower bytes in a pixel if pixel is in foreign endianity.
#define	GP_SWAP_BYTES4(v)
	Swaps 4 lower bytes in a pixel if pixel is in foreign endianity.
#define	GP_GET_BYTES1(src)
	Align safe get byte.
#define	GP_SET_BYTES1(dst, byte)
	Align safe set byte.
#define	GP_GET_BYTES2_LE(src)
	Little endian align usafe get bytes.
#define	GP_SET_BYTES2_LE(dst, bytes)
	Little endian align usafe set bytes.
#define	GP_GET_BYTES2_BE(src)
	Big endian align usafe get bytes.
#define	GP_SET_BYTES2_BE(dst, bytes)
	Big endian align usafe set bytes.
#define	GP_GET_BYTES4_BE(src)
	Big endian align usafe get bytes.
#define	GP_SET_BYTES4_BE(dst, bytes)
	Big endian align usafe set bytes.
#define	GP_GET_BYTES4_LE(src)
	Little endian align usafe get bytes.
#define	GP_SET_BYTES4_LE(dst, bytes)
	Little endian align usafe set bytes.

Detailed Description

Helper macros to get and set bytes.

Definition in file gp_get_set_bytes.h.

Macro Definition Documentation

GP_GET_BYTES1

#define GP_GET_BYTES1

(

src

)

Value:

(*((uint8_t *)(src)))

Align safe get byte.

Reads a byte from a buffer.

Parameters

buf	A pointer to a starting byte of the buffer.

Definition at line 55 of file gp_get_set_bytes.h.

Referenced by gp_getpixel_raw_8BPP().

GP_GET_BYTES2_BE

#define GP_GET_BYTES2_BE

(

src

)

Value:

(*((uint16_t *)(src)))

Big endian align usafe get bytes.

Reads two bytes from a buffer in a big endian order.

Parameters

buf	A pointer to a starting byte of the buffer.

Definition at line 101 of file gp_get_set_bytes.h.

Referenced by gp_getpixel_raw_16BPP_BE().

GP_GET_BYTES2_LE

#define GP_GET_BYTES2_LE

(

src

)

Value:

(*((uint16_t *)(src)))

Little endian align usafe get bytes.

Reads two bytes from a buffer in a little endian order.

Parameters

buf	A pointer to a starting byte of the buffer.

Definition at line 75 of file gp_get_set_bytes.h.

Referenced by gp_getpixel_raw_16BPP().

GP_GET_BYTES4_BE

#define GP_GET_BYTES4_BE

(

src

)

Value:

*((uint32_t *)src)

Big endian align usafe get bytes.

Reads two bytes from a buffer in a big endian order.

Parameters

buf	A pointer to a starting byte of the buffer.

Definition at line 127 of file gp_get_set_bytes.h.

GP_GET_BYTES4_LE

#define GP_GET_BYTES4_LE

(

src

)

Value:

*((uint32_t *)src)

Little endian align usafe get bytes.

Reads two bytes from a buffer in a little endian order.

Parameters

buf	A pointer to a starting byte of the buffer.

Definition at line 153 of file gp_get_set_bytes.h.

Referenced by gp_getpixel_raw_32BPP().

GP_SET_BYTES1

#define GP_SET_BYTES1	(		dst,
			byte )

Value:

*((uint8_t *)(dst)) = (byte)

Align safe set byte.

Writes a byte into a buffer buffer.

Parameters

buf	A pointer to a starting byte of the buffer.
byte	A value to be written.

Definition at line 65 of file gp_get_set_bytes.h.

Referenced by gp_putpixel_raw_8BPP().

GP_SET_BYTES2_BE

#define GP_SET_BYTES2_BE	(		dst,
			bytes )

Value:

*((uint16_t *)(dst)) = (bytes)

Big endian align usafe set bytes.

Writes two bytes from to a buffer in a big endian order.

Parameters

buf	A pointer to a starting byte of the buffer.

Definition at line 114 of file gp_get_set_bytes.h.

Referenced by gp_putpixel_raw_16BPP_BE().

GP_SET_BYTES2_LE

#define GP_SET_BYTES2_LE	(		dst,
			bytes )

Value:

*((uint16_t *)(dst)) = (bytes)

Little endian align usafe set bytes.

Writes two bytes from to a buffer in a little endian order.

Parameters

buf	A pointer to a starting byte of the buffer.

Definition at line 88 of file gp_get_set_bytes.h.

Referenced by gp_putpixel_raw_16BPP().

GP_SET_BYTES4_BE

#define GP_SET_BYTES4_BE	(		dst,
			bytes )

Value:

*((uint32_t *)(dst)) = (bytes)

Big endian align usafe set bytes.

Writes four bytes from to a buffer in a big endian order.

Parameters

buf	A pointer to a starting byte of the buffer.

Definition at line 140 of file gp_get_set_bytes.h.

GP_SET_BYTES4_LE

#define GP_SET_BYTES4_LE	(		dst,
			bytes )

Value:

*((uint32_t *)(dst)) = (bytes)

Little endian align usafe set bytes.

Writes four bytes from to a buffer in a little endian order.

Parameters

buf	A pointer to a starting byte of the buffer.

Definition at line 166 of file gp_get_set_bytes.h.

Referenced by gp_putpixel_raw_32BPP().

GP_SWAP_BYTES2

#define GP_SWAP_BYTES2

(

v

)

Value:

        (   \
        (((v) & 0xff00)>>8) | \
        (((v) & 0x00ff)<<8)   \
)

Swaps 2 lower bytes in a pixel if pixel is in foreign endianity.

Parameters

v	A pixel value.

Definition at line 20 of file gp_get_set_bytes.h.

GP_SWAP_BYTES3

#define GP_SWAP_BYTES3

(

v

)

Value:

         (      \
         ((v) & 0x00ff00)      | \
        (((v) & 0x0000ff)<<16) | \
        (((v) & 0xff0000)>>16)   \
)

Swaps 3 lower bytes in a pixel if pixel is in foreign endianity.

Parameters

v	A pixel value.

Definition at line 30 of file gp_get_set_bytes.h.

GP_SWAP_BYTES4

#define GP_SWAP_BYTES4

(

v

)

Value:

        (        \
        (((v) & 0xff000000)>>24) | \
        (((v) & 0x00ff0000)>>8)  | \
        (((v) & 0x0000ff00)<<8)  | \
        (((v) & 0x000000ff)<<24)   \
)

Swaps 4 lower bytes in a pixel if pixel is in foreign endianity.

Parameters

v	A pixel value.

Definition at line 41 of file gp_get_set_bytes.h.