/*
* This is the constructor for the struct PPMImage. this_prt is passed
* to the constructer as NULL when a new instance of IMMImage needs to
* be declared on the heap. this_ptr contains a valid pointer if the
* memory for the object has already been allocated. May be called
* with only this_ptr or can be called using a filename as the second
* parameter in which case the imge will be loaded.
*/
PPMImage* ppm_image_constructor(const char * filename)
{
//Allocate memeory for a new object on the heap
PPMImage* this_ptr = (PPMImage *) malloc(sizeof(PPMImage));
if(!this_ptr)
{
fprintf(ERROR_OUT, "ERROR %d: Unable to allocate memeory of PPMImage Object\nPress Enter To Exit...", errno);
//char c = getc(stdin);
exit(10);
}
//If memeory has been allocated initilaize the memeber variables
if(this_ptr)
{
this_ptr->p = '\0';
this_ptr->width = 0;
this_ptr->height = 0;
this_ptr->maxValue = 0;
this_ptr->size = 0;
this_ptr->filename[0] = '\0';
}
//If file name was specified then load the image
if(filename)
{
this_ptr = load_ppm_image(this_ptr, filename, NEW_ALLOC);
}
return this_ptr;
}
/**
* @brief Loads an image from the disk.
* Currently only PPM format is supported.
*
* @param path image file path
*
* @return pointer to the new image
*/
struct Image* image_load(const char * path)
{
struct Image* imagep = malloc(sizeof(struct Image));
load_ppm_image(path, &imagep->width, &imagep->height, &imagep->data);
return imagep;
}