1.1 --- a/src/pt_image.c Mon Aug 03 14:21:23 2009 +0100 1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 1.3 @@ -1,130 +0,0 @@ 1.4 -#include <stdio.h> 1.5 -#include <stdlib.h> 1.6 -#include <string.h> 1.7 -#include "pt_image.h" 1.8 - 1.9 -/** 1.10 - * Create a new pt_Image object. 1.11 - * 1.12 - * Creates a new pt_Image of a specified width and height, and initialises 1.13 - * all the pixels in its buffer to zero. 1.14 - * 1.15 - * @param width The width of the image. 1.16 - * @param height The height of the image. 1.17 - * @return The new pt_Image, or NULL on failure. 1.18 - */ 1.19 -pt_Image *ptimage_Create(unsigned long width, unsigned long height) 1.20 -{ 1.21 - pt_Image *image; 1.22 - 1.23 -#ifdef DEBUG 1.24 - printf("%s[%d]: image size = %u\n", __FILE__, __LINE__, sizeof(pt_Image)); 1.25 - printf("%s[%d]: data size = %u\n", __FILE__, __LINE__, sizeof(image->data[0])); 1.26 - printf("%s[%d]: create %lu x %lu image\n", __FILE__, __LINE__, width, height); 1.27 -#endif 1.28 - 1.29 - // Allocate memory for the new image and its data buffer 1.30 - image = malloc(sizeof(pt_Image)); 1.31 - if (image == NULL) return NULL; 1.32 - 1.33 - image->data = malloc(width * height * sizeof(image->data[0])); 1.34 - if (image->data == NULL) return NULL; 1.35 - 1.36 - // Set the image's parameters 1.37 - image->width = width; 1.38 - image->height = height; 1.39 - 1.40 - // Clear the image's data buffer to "blank" 1.41 - memset(image->data, 0, width * height * sizeof(image->data[0])); 1.42 - 1.43 - return image; 1.44 -} 1.45 - 1.46 -/** 1.47 - * Free a pt_Image object. 1.48 - * 1.49 - * @param image The image object to free. 1.50 - */ 1.51 -void ptimage_Free(pt_Image *image) 1.52 -{ 1.53 - // Make sure image is non-null 1.54 - if (image == NULL) { 1.55 - return; 1.56 - } 1.57 - 1.58 - // Free the image data 1.59 - if (image->data != NULL) { 1.60 - free(image->data); 1.61 - } 1.62 - 1.63 - // Free the image 1.64 - free(image); 1.65 -} 1.66 - 1.67 -/** 1.68 - * Get the value of a pixel in a pt_Image object. 1.69 - * 1.70 - * @param image Image object. 1.71 - * @param x X position of the pixel, zero-based. 1.72 - * @param y Y position of the pixel, zero-based. 1.73 - * @return Value of the pixel, or negative on error. 1.74 - */ 1.75 -int ptimage_GetPixel(pt_Image *image, unsigned long x, unsigned long y) 1.76 -{ 1.77 - // Make sure the image is not null and that the data buffer has been 1.78 - // allocated 1.79 - if (image == NULL) { 1.80 - return -1; // TODO: make constant 1.81 - } 1.82 - 1.83 - if (image->data == NULL) { 1.84 - return -1; // TODO: make constant 1.85 - } 1.86 - 1.87 - // Range-check 1.88 - if ((x < 0) || (x > image->width)) { 1.89 - return -2; // TODO: make constant 1.90 - } 1.91 - if ((y < 0) || (y > image->height)) { 1.92 - return -3; // TODO: make constant 1.93 - } 1.94 - 1.95 - // Return the pixel value 1.96 - return image->data[(y*image->width)+x]; 1.97 -} 1.98 - 1.99 -/** 1.100 - * Set the value of a pixel in a pt_Image object. 1.101 - * 1.102 - * @param image Image object. 1.103 - * @param x X position of the pixel, zero-based. 1.104 - * @param y Y position of the pixel, zero-based. 1.105 - * @param val New value of the pixel. 1.106 - * @return Zero on success, or negative on error. 1.107 - */ 1.108 -int ptimage_SetPixel(pt_Image *image, unsigned long x, unsigned long y, unsigned char val) 1.109 -{ 1.110 - // Make sure the image is not null and that the data buffer has been 1.111 - // allocated 1.112 - if (image == NULL) { 1.113 - return -1; // TODO: make constant 1.114 - } 1.115 - 1.116 - if (image->data == NULL) { 1.117 - return -1; // TODO: make constant 1.118 - } 1.119 - 1.120 - // Range-check 1.121 - if ((x < 0) || (x > image->width)) { 1.122 - return -2; // TODO: make constant 1.123 - } 1.124 - if ((y < 0) || (y > image->height)) { 1.125 - return -3; // TODO: make constant 1.126 - } 1.127 - 1.128 - // Set the pixel value 1.129 - image->data[(y*image->width)+x] = val; 1.130 - 1.131 - return 0; 1.132 -} 1.133 -