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#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#ifdef HAVE_EVIL
# include <Evil.h>
#endif
#include "evas_common.h"
#include "evas_private.h"
static Eina_Bool evas_image_load_file_head_wbmp(Image_Entry *ie, const char *file, const char *key, int *error) EINA_ARG_NONNULL(1, 2, 4);
static Eina_Bool evas_image_load_file_data_wbmp(Image_Entry *ie, const char *file, const char *key, int *error) EINA_ARG_NONNULL(1, 2, 4);
static Evas_Image_Load_Func evas_image_load_wbmp_func =
{
EINA_TRUE,
evas_image_load_file_head_wbmp,
evas_image_load_file_data_wbmp,
NULL,
EINA_FALSE
};
static int
read_mb(unsigned int *data, void *map, size_t length, size_t *position)
{
int ac = 0, ct;
unsigned char buf;
for (ct = 0;;)
{
if ((ct++) == 5) return -1;
if (*position > length) return -1;
buf = ((unsigned char *) map)[(*position)++];
ac = (ac << 7) | (buf & 0x7f);
if ((buf & 0x80) == 0) break;
}
*data = ac;
return 0;
}
static Eina_Bool
evas_image_load_file_head_wbmp(Image_Entry *ie, const char *file, const char *key __UNUSED__, int *error)
{
Eina_File *f;
void *map = NULL;
size_t position = 0;
size_t length;
unsigned int type, w, h;
*error = EVAS_LOAD_ERROR_GENERIC;
f = eina_file_open(file, 0);
if (!f)
{
*error = EVAS_LOAD_ERROR_DOES_NOT_EXIST;
return EINA_FALSE;
}
length = eina_file_size_get(f);
if (length <= 4) goto bail;
map = eina_file_map_all(f, EINA_FILE_SEQUENTIAL);
if (!map) goto bail;
if (read_mb(&type, map, length, &position) < 0) goto bail;
if (type != 0)
{
*error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
goto bail;
}
position++; /* skipping one byte */
if (read_mb(&w, map, length, &position) < 0) goto bail;
if (read_mb(&h, map, length, &position) < 0) goto bail;
if ((w < 1) || (h < 1) || (w > IMG_MAX_SIZE) || (h > IMG_MAX_SIZE) ||
IMG_TOO_BIG(w, h))
{
*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
goto bail;
}
eina_file_map_free(f, map);
eina_file_close(f);
ie->w = w;
ie->h = h;
*error = EVAS_LOAD_ERROR_NONE;
return EINA_TRUE;
bail:
if (map) eina_file_map_free(f, map);
eina_file_close(f);
return EINA_FALSE;
}
static Eina_Bool
evas_image_load_file_data_wbmp(Image_Entry *ie, const char *file, const char *key __UNUSED__, int *error)
{
Eina_File *f;
void *map = NULL;
size_t position = 0;
size_t length;
unsigned int type, w, h;
unsigned int line_length;
unsigned char *line = NULL;
int cur = 0, x, y;
DATA32 *dst_data;
*error = EVAS_LOAD_ERROR_GENERIC;
f = eina_file_open(file, EINA_FALSE);
if (!f)
{
*error = EVAS_LOAD_ERROR_DOES_NOT_EXIST;
return EINA_FALSE;
}
length = eina_file_size_get(f);
if (length <= 4) goto bail;
map = eina_file_map_all(f, EINA_FILE_SEQUENTIAL);
if (!map) goto bail;
if (read_mb(&type, map, length, &position) < 0) goto bail;
position++; /* skipping one byte */
if (read_mb(&w, map, length, &position) < 0) goto bail;
if (read_mb(&h, map, length, &position) < 0) goto bail;
if (type != 0)
{
*error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
goto bail;
}
if ((w < 1) || (h < 1) || (w > IMG_MAX_SIZE) || (h > IMG_MAX_SIZE) ||
IMG_TOO_BIG(w, h))
{
*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
goto bail;
}
ie->w = w;
ie->h = h;
evas_cache_image_surface_alloc(ie, ie->w, ie->h);
dst_data = evas_cache_image_pixels(ie);
if (!dst_data)
{
*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
goto bail;
}
line_length = (ie->w + 7) >> 3;
for (y = 0; y < (int)ie->h; y++)
{
if (position + line_length > length) goto bail;
line = ((unsigned char*) map) + position;
position += line_length;
for (x = 0; x < (int)ie->w; x++)
{
int idx = x >> 3;
int offset = 1 << (0x07 - (x & 0x07));
if (line[idx] & offset) dst_data[cur] = 0xffffffff;
else dst_data[cur] = 0xff000000;
cur++;
}
}
eina_file_map_free(f, map);
eina_file_close(f);
*error = EVAS_LOAD_ERROR_NONE;
return EINA_TRUE;
bail:
if (map) eina_file_map_free(f, map);
eina_file_close(f);
return EINA_FALSE;
}
static int
module_open(Evas_Module *em)
{
if (!em) return 0;
em->functions = (void *)(&evas_image_load_wbmp_func);
return 1;
}
static void
module_close(Evas_Module *em __UNUSED__)
{
}
static Evas_Module_Api evas_modapi =
{
EVAS_MODULE_API_VERSION,
"wbmp",
"none",
{
module_open,
module_close
}
};
EVAS_MODULE_DEFINE(EVAS_MODULE_TYPE_IMAGE_LOADER, image_loader, wbmp);
#ifndef EVAS_STATIC_BUILD_WBMP
EVAS_EINA_MODULE_DEFINE(image_loader, wbmp);
#endif
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