imbuf_cocoa.m File Reference

#include <stdint.h>
#include <string.h>
#import <Cocoa/Cocoa.h>
#include "imbuf.h"
#include "IMB_cocoa.h"
#include "BKE_global.h"
#include "BKE_colortools.h"
#include "IMB_imbuf_types.h"
#include "IMB_imbuf.h"
#include "IMB_allocimbuf.h"

Go to the source code of this file.

Defines
#define	FTOUSHORT(val)   ((val >= 1.0f-0.5f/65535)? 65535: (val <= 0.0f)? 0: (unsigned short)(val*65535.0f + 0.5f))
#define	IMB_TIFF_NCB   4
Functions
struct ImBuf *	imb_cocoaLoadImage (unsigned char *mem, int size, int flags)
short	imb_cocoaSaveImage (struct ImBuf *ibuf, char *name, int flags)
int	imb_is_a_tiff (void *mem)

---

Define Documentation

#define FTOUSHORT

(

val

)

((val >= 1.0f-0.5f/65535)? 65535: (val <= 0.0f)? 0: (unsigned short)(val*65535.0f + 0.5f))

Saves an image to a file.

ImBuf structures with 1, 3 or 4 bytes per pixel (GRAY, RGB, RGBA respectively) are accepted, and interpreted correctly.

Accepted formats: TIFF, GIF, BMP, PNG, JPEG, JPEG2000

Parameters:

ibuf,:	Image buffer.
name,:	Name of the image file to create.
flags,:	Currently largely ignored.

Returns:

: 1 if the function is successful, 0 on failure.

Definition at line 207 of file imbuf_cocoa.m.

Referenced by imb_cocoaSaveImage().

#define IMB_TIFF_NCB   4

Checks whether a given memory buffer contains a TIFF file.

FIXME: Possible memory leak if mem is less than IMB_TIFF_NCB bytes long. However, changing this will require up-stream modifications.

This method uses the format identifiers from: http://www.faqs.org/faqs/graphics/fileformats-faq/part4/section-9.html The first four bytes of big-endian and little-endian TIFF files respectively are (hex): 4d 4d 00 2a 49 49 2a 00 Note that TIFF files on *any* platform can be either big- or little-endian; it's not platform-specific.

AFAICT, libtiff doesn't provide a method to do this automatically, and hence my manual comparison. - Jonathan Merritt (lancelet) 4th Sept 2005.

Definition at line 378 of file imbuf_cocoa.m.

Referenced by imb_is_a_tiff().

---

Function Documentation

struct ImBuf* imb_cocoaLoadImage	(	unsigned char *	mem,
		int	size,
		int	flags
	)		[read]

Provides image file loading and saving for Blender, via Cocoa. Loads an image from the supplied buffer

Loads any Core Graphics supported type Currently is : TIFF, BMP, JPEG, GIF, PNG, DIB, ICO, and various RAW formats

Parameters:

mem,:	Memory containing the bitmap image
size,:	Size of the mem buffer.
flags,:	If flags has IB_test set then the file is not actually loaded, but all other operations take place.

Returns:

: A newly allocated ImBuf structure if successful, otherwise NULL.

Definition at line 63 of file imbuf_cocoa.m.

References B_ENDIAN, data, ENDIAN_ORDER, ImBuf::ftype, IB_PROFILE_SRGB, IB_test, imb_addrectImBuf(), IMB_allocImBuf(), IMB_convert_rgba_to_abgr(), NULL, ImBuf::profile, ImBuf::rect, ImBuf::x, and ImBuf::y.

short imb_cocoaSaveImage	(	struct ImBuf *	ibuf,
		char *	name,
		int	flags
	)

Definition at line 209 of file imbuf_cocoa.m.

References BOOL, FALSE, FTOUSHORT, ImBuf::ftype, i, IB_PROFILE_SRGB, linearrgb_to_srgb(), NO, NULL, ImBuf::planes, ImBuf::profile, ImBuf::rect, ImBuf::rect_float, ImBuf::x, ImBuf::y, and YES.

int imb_is_a_tiff

(

void *

mem

)

Definition at line 379 of file imbuf_cocoa.m.

References IMB_TIFF_NCB.