imageio_rgbe.c File Reference

#include "common/imageio_rgbe.h"
#include "develop/imageop.h"
#include <ctype.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

Include dependency graph for imageio_rgbe.c:

Go to the source code of this file.

Data Structures
struct	rgbe_header_info

Macros
#define	RGBE_VALID_PROGRAMTYPE   0x01
#define	RGBE_VALID_GAMMA   0x02
#define	RGBE_VALID_EXPOSURE   0x04
#define	RGBE_RETURN_SUCCESS   0
#define	RGBE_RETURN_FAILURE   -1
#define	RGBE_DATA_RED   0
#define	RGBE_DATA_GREEN   1
#define	RGBE_DATA_BLUE   2
#define	RGBE_DATA_SIZE   3

Enumerations
enum	rgbe_error_codes {   rgbe_read_error ,   rgbe_write_error ,   rgbe_format_error ,   rgbe_memory_error }

Functions
static int	rgbe_error (int rgbe_error_code, char *msg)
static void	rgbe2float (float *red, float *green, float *blue, unsigned char rgbe[4])
int	RGBE_ReadHeader (FILE *fp, int *width, int *height, rgbe_header_info *info)
int	RGBE_ReadPixels (FILE *fp, float *data, int numpixels)
int	RGBE_ReadPixels_RLE (FILE *fp, float *data, int scanline_width, int num_scanlines)
static void	_xy2matrix (const float r[2], const float g[2], const float b[2], const float w[2], const float Y, float M[4][4])
dt_imageio_retval_t	dt_imageio_open_rgbe (dt_image_t *img, const char *filename, dt_mipmap_buffer_t *mbuf)

Macro Definition Documentation

RGBE_DATA_BLUE

#define RGBE_DATA_BLUE   2

Definition at line 72 of file imageio_rgbe.c.

RGBE_DATA_GREEN

#define RGBE_DATA_GREEN   1

Definition at line 71 of file imageio_rgbe.c.

RGBE_DATA_RED

#define RGBE_DATA_RED   0

Definition at line 70 of file imageio_rgbe.c.

RGBE_DATA_SIZE

#define RGBE_DATA_SIZE   3

Definition at line 74 of file imageio_rgbe.c.

RGBE_RETURN_FAILURE

#define RGBE_RETURN_FAILURE   -1

Definition at line 68 of file imageio_rgbe.c.

RGBE_RETURN_SUCCESS

#define RGBE_RETURN_SUCCESS   0

Definition at line 67 of file imageio_rgbe.c.

RGBE_VALID_EXPOSURE

#define RGBE_VALID_EXPOSURE   0x04

Definition at line 64 of file imageio_rgbe.c.

RGBE_VALID_GAMMA

#define RGBE_VALID_GAMMA   0x02

Definition at line 63 of file imageio_rgbe.c.

RGBE_VALID_PROGRAMTYPE

#define RGBE_VALID_PROGRAMTYPE   0x01

Definition at line 62 of file imageio_rgbe.c.

Enumeration Type Documentation

rgbe_error_codes

enum rgbe_error_codes

Enumerator
rgbe_read_error
rgbe_write_error
rgbe_format_error
rgbe_memory_error

Definition at line 76 of file imageio_rgbe.c.

Function Documentation

_xy2matrix()

static void _xy2matrix ( const float  r[2], const float  g[2], const float  b[2], const float  w[2], const float  Y, float  M[4][4]  )

static

Definition at line 557 of file imageio_rgbe.c.

References d, g, i, M, and r.

Referenced by dt_imageio_open_rgbe().

dt_imageio_open_rgbe()

dt_imageio_retval_t dt_imageio_open_rgbe	(	dt_image_t *	img,
		const char *	filename,
		dt_mipmap_buffer_t *	mbuf
	)

Definition at line 601 of file imageio_rgbe.c.

References _xy2matrix(), dt_iop_buffer_dsc_t::bpp, dt_iop_buffer_dsc_t::channels, dt_iop_buffer_dsc_t::cst, dt_image_t::d65_color_matrix, dt_iop_buffer_dsc_t::datatype, dt_image_t::dsc, DT_IMAGE_HDR, DT_IMAGEIO_CACHE_FULL, DT_IMAGEIO_FILE_CORRUPTED, DT_IMAGEIO_OK, dt_mipmap_cache_alloc(), f, dt_iop_buffer_dsc_t::filters, dt_image_t::flags, dt_image_t::height, i, IOP_CS_RGB, IS_NULL_PTR, dt_image_t::loader, LOADER_RGBE, m, mat3inv(), rgbe_header_info::primaries, RGBE_ReadHeader(), RGBE_ReadPixels_RLE(), TYPE_FLOAT, and dt_image_t::width.

Referenced by dt_imageio_open_hdr().

rgbe2float()

static void rgbe2float ( float *  red, float *  green, float *  blue, unsigned char  rgbe[4]  )

static

Definition at line 135 of file imageio_rgbe.c.

References f.

Referenced by RGBE_ReadPixels(), and RGBE_ReadPixels_RLE().

rgbe_error()

static int rgbe_error ( int  rgbe_error_code, char *  msg  )

static

Definition at line 85 of file imageio_rgbe.c.

References rgbe_format_error, rgbe_memory_error, rgbe_read_error, RGBE_RETURN_FAILURE, and rgbe_write_error.

Referenced by RGBE_ReadHeader(), RGBE_ReadPixels(), and RGBE_ReadPixels_RLE().

RGBE_ReadHeader()

int RGBE_ReadHeader	(	FILE *	fp,
		int *	width,
		int *	height,
		rgbe_header_info *	info
	)

Definition at line 178 of file imageio_rgbe.c.

References rgbe_header_info::exposure, FALSE, rgbe_header_info::gamma, height, i, rgbe_header_info::primaries, rgbe_header_info::programtype, rgbe_error(), rgbe_format_error, rgbe_read_error, RGBE_RETURN_SUCCESS, RGBE_VALID_EXPOSURE, RGBE_VALID_GAMMA, RGBE_VALID_PROGRAMTYPE, TRUE, rgbe_header_info::valid, and width.

Referenced by dt_imageio_open_rgbe().

RGBE_ReadPixels()

int RGBE_ReadPixels	(	FILE *	fp,
		float *	data,
		int	numpixels
	)

Definition at line 288 of file imageio_rgbe.c.

References rgbe2float(), RGBE_DATA_BLUE, RGBE_DATA_GREEN, RGBE_DATA_RED, RGBE_DATA_SIZE, rgbe_error(), rgbe_read_error, and RGBE_RETURN_SUCCESS.

Referenced by RGBE_ReadPixels_RLE().

RGBE_ReadPixels_RLE()

int RGBE_ReadPixels_RLE	(	FILE *	fp,
		float *	data,
		int	scanline_width,
		int	num_scanlines
	)

Definition at line 416 of file imageio_rgbe.c.

References dt_free, i, IS_NULL_PTR, rgbe2float(), RGBE_DATA_BLUE, RGBE_DATA_GREEN, RGBE_DATA_RED, RGBE_DATA_SIZE, rgbe_error(), rgbe_format_error, rgbe_memory_error, rgbe_read_error, RGBE_ReadPixels(), and RGBE_RETURN_SUCCESS.

Referenced by dt_imageio_open_rgbe().