utils.c File Reference

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

Go to the source code of this file.

Macros
#define	SCALEBITS   8
#define	ONE_HALF   (1 << (SCALEBITS - 1))
#define	FIX(x)
#define	err_if(expr)
#define	DEFAULT_WIDTH   352
#define	DEFAULT_HEIGHT   288
#define	DEFAULT_NB_PICT   50

Functions
static void	rgb24_to_yuv420p (unsigned char *lum, unsigned char *cb, unsigned char *cr, const unsigned char *src, int width, int height)
static void	pgmyuv_save (const char *filename, int w, int h, const unsigned char *rgb_tab)
static void	put_pixel (int x, int y, int r, int g, int b)

Variables
static unsigned char *	rgb_tab
static int	width
static int	height
static int	wrap

Macro Definition Documentation

SCALEBITS

#define SCALEBITS   8

Definition at line 26 of file utils.c.

ONE_HALF

#define ONE_HALF   (1 << (SCALEBITS - 1))

Definition at line 27 of file utils.c.

FIX

#define FIX

(

x

)

Value:

((int) ((x) * (1 << SCALEBITS) + 0.5))

Definition at line 28 of file utils.c.

Referenced by rgb24_to_yuv420p().

err_if

#define err_if

(

expr

)

Value:

    do {                                              \
    if (expr) {                                                        \
        fprintf(stderr, "%s\n", strerror(errno));                      \
        exit(1);                                                       \
    }                                                                  \
} while (0)

Definition at line 30 of file utils.c.

Referenced by pgmyuv_save().

DEFAULT_WIDTH

#define DEFAULT_WIDTH   352

Definition at line 102 of file utils.c.

Referenced by main(), and print_help().

DEFAULT_HEIGHT

#define DEFAULT_HEIGHT   288

Definition at line 103 of file utils.c.

Referenced by main(), and print_help().

DEFAULT_NB_PICT

#define DEFAULT_NB_PICT   50

Definition at line 104 of file utils.c.

Referenced by main().

Function Documentation

rgb24_to_yuv420p()

static void rgb24_to_yuv420p ( unsigned char * lum, unsigned char * cb, unsigned char * cr, const unsigned char * src, int width, int height )

static

Definition at line 37 of file utils.c.

Referenced by pgmyuv_save().

pgmyuv_save()

static void pgmyuv_save ( const char * filename, int w, int h, const unsigned char * rgb_tab )

static

Definition at line 106 of file utils.c.

Referenced by main().

put_pixel()

static void put_pixel ( int x, int y, int r, int g, int b )

static

Definition at line 160 of file utils.c.

Variable Documentation

rgb_tab

unsigned char* rgb_tab

static

Definition at line 157 of file utils.c.

Referenced by main(), pgmyuv_save(), and put_pixel().

width

int width

static

Definition at line 158 of file utils.c.

height

int height

static

Definition at line 158 of file utils.c.

wrap

int wrap

static

Definition at line 158 of file utils.c.