readtex

Includes:

<stdio.h>

Introduction

Texture loading from file.

Discussion

readtex forms one part of the Eden library.

Functions

jpgread: Read a JPEG file and return it as a raw buffer.
ReadTex: Read an image file and return it as a raw buffer.

jpgread

Read a JPEG file and return it as a raw buffer.

unsigned char *jpgread (
    FILE *fp,
    int *w,
    int *h,
    int *nc,
    float *dpi);

Parameters

fp: File pointer to open jpeg file.
w: Pointer to location which will be filled with the width of the JPEG image in pixels, or NULL if this is not required.
h: Pointer to location which will be filled with the width of the JPEG image in pixels, or NULL if this is not required.
nc: Pointer to location which will be filled with the number of components in the JPEG image in pixels, or NULL if this is not required.
dpi: Pointer to location which will be filled with the resolution of the jpeg in dots-per-inch, or NULL if this is not required.

Return Value

A raw buffer holding the jpeg data, beginning with the first component of the leftmost pixel of the uppermost scanline, and continuing by component, pixel, and line. This buffer must be free()d when finished with.

Discussion

Reads a JPEG image from a file into a raw buffer. JPEGs in mono and RGB format are supported.

ReadTex

Read an image file and return it as a raw buffer.

extern unsigned char *ReadTex(
    const char *imageFile,
    int *w,
    int *h,
    int *nc);

Parameters

imageFile: name of image to read. At present, images in SGI format (.sgi or .rgb) and JPEG format (.jpg or .jpeg) are supported.
w: Pointer to location which will be filled with the width of the image in pixels, or NULL if this is not required.
h: Pointer to location which will be filled with the width of the image in pixels, or NULL if this is not required.
nc: Pointer to location which will be filled with the number of components in the image in pixels, or NULL if this is not required.

Return Value

A raw buffer holding the image data, beginning with the first component of the leftmost pixel of the uppermost scanline, and continuing by component, pixel, and line. This buffer must be free()d when finished with.

Last Updated: Wednesday, March 23, 2016