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#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <assert.h>
#include "readers.h"
/* ----------------------------------------------------------------------- */
void load_bits_lsb(unsigned char *dst, unsigned char *src, int width,
int on, int off)
{
int i,mask,bit;
for (i = 0; i < width; i++) {
mask = 1 << (i & 0x07);
bit = src[i>>3] & mask;
dst[0] = bit ? on : off;
dst[1] = bit ? on : off;
dst[2] = bit ? on : off;
dst += 3;
}
}
void load_bits_msb(unsigned char *dst, unsigned char *src, int width,
int on, int off)
{
int i,mask,bit;
for (i = 0; i < width; i++) {
mask = 1 << (7 - (i & 0x07));
bit = src[i>>3] & mask;
dst[0] = bit ? on : off;
dst[1] = bit ? on : off;
dst[2] = bit ? on : off;
dst += 3;
}
}
void load_gray(unsigned char *dst, unsigned char *src, int width)
{
int i;
for (i = 0; i < width; i++) {
dst[0] = src[0];
dst[1] = src[0];
dst[2] = src[0];
dst += 3;
src += 1;
}
}
void load_graya(unsigned char *dst, unsigned char *src, int width)
{
int i;
for (i = 0; i < width; i++) {
dst[0] = src[0];
dst[1] = src[0];
dst[2] = src[0];
dst += 3;
src += 2;
}
}
void load_rgba(unsigned char *dst, unsigned char *src, int width)
{
int i;
for (i = 0; i < width; i++) {
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst += 3;
src += 4;
}
}
/* ----------------------------------------------------------------------- */
int load_add_extra(struct ida_image_info *info, enum ida_extype type,
unsigned char *data, unsigned int size)
{
struct ida_extra *extra;
extra = malloc(sizeof(*extra));
if (NULL == extra)
return -1;
memset(extra,0,sizeof(*extra));
extra->data = malloc(size);
if (NULL == extra->data) {
free(extra);
return -1;
}
extra->type = type;
extra->size = size;
memcpy(extra->data,data,size);
extra->next = info->extra;
info->extra = extra;
return 0;
};
struct ida_extra* load_find_extra(struct ida_image_info *info,
enum ida_extype type)
{
struct ida_extra *extra;
for (extra = info->extra; NULL != extra; extra = extra->next)
if (type == extra->type)
return extra;
return NULL;
}
int load_free_extras(struct ida_image_info *info)
{
struct ida_extra *next;
while (NULL != info->extra) {
next = info->extra->next;
free(info->extra->data);
free(info->extra);
info->extra = next;
}
return 0;
}
/* ----------------------------------------------------------------------- */
void ida_image_alloc(struct ida_image *img)
{
assert(img->p == NULL);
img->p = pixman_image_create_bits(PIXMAN_r8g8b8,
img->i.width, img->i.height, NULL, 0);
}
uint8_t *ida_image_scanline(struct ida_image *img, int y)
{
uint8_t *scanline;
assert(img->p != NULL);
scanline = (void*)pixman_image_get_data(img->p);
scanline += pixman_image_get_stride(img->p) * y;
return scanline;
}
void ida_image_free(struct ida_image *img)
{
assert(img->p != NULL);
pixman_image_unref(img->p);
img->p = NULL;
}
/* ----------------------------------------------------------------------- */
LIST_HEAD(loaders);
void load_register(struct ida_loader *loader)
{
list_add_tail(&loader->list, &loaders);
}
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