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IMG_xcf.c
897 lines (762 loc) · 22.3 KB
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/*
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SDL_image: An example image loading library for use with SDL
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Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
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*/
/* This is a XCF image file loading framework */
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#include "SDL_endian.h"
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#include "SDL_image.h"
#ifdef LOAD_XCF
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#if DEBUG
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static char prop_names [][30] = {
"end",
"colormap",
"active_layer",
"active_channel",
"selection",
"floating_selection",
"opacity",
"mode",
"visible",
"linked",
"preserve_transparency",
"apply_mask",
"edit_mask",
"show_mask",
"show_masked",
"offsets",
"color",
"compression",
"guides",
"resolution",
"tattoo",
"parasites",
"unit",
"paths",
"user_unit"
};
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#endif
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typedef enum
{
PROP_END = 0,
PROP_COLORMAP = 1,
PROP_ACTIVE_LAYER = 2,
PROP_ACTIVE_CHANNEL = 3,
PROP_SELECTION = 4,
PROP_FLOATING_SELECTION = 5,
PROP_OPACITY = 6,
PROP_MODE = 7,
PROP_VISIBLE = 8,
PROP_LINKED = 9,
PROP_PRESERVE_TRANSPARENCY = 10,
PROP_APPLY_MASK = 11,
PROP_EDIT_MASK = 12,
PROP_SHOW_MASK = 13,
PROP_SHOW_MASKED = 14,
PROP_OFFSETS = 15,
PROP_COLOR = 16,
PROP_COMPRESSION = 17,
PROP_GUIDES = 18,
PROP_RESOLUTION = 19,
PROP_TATTOO = 20,
PROP_PARASITES = 21,
PROP_UNIT = 22,
PROP_PATHS = 23,
PROP_USER_UNIT = 24
} xcf_prop_type;
typedef enum {
COMPR_NONE = 0,
COMPR_RLE = 1,
COMPR_ZLIB = 2,
COMPR_FRACTAL = 3
} xcf_compr_type;
typedef enum {
IMAGE_RGB = 0,
IMAGE_GREYSCALE = 1,
IMAGE_INDEXED = 2
} xcf_image_type;
typedef struct {
Uint32 id;
Uint32 length;
union {
struct {
Uint32 num;
char * cmap;
} colormap; // 1
struct {
Uint32 drawable_offset;
} floating_selection; // 5
Sint32 opacity;
Sint32 mode;
int visible;
int linked;
int preserve_transparency;
int apply_mask;
int show_mask;
struct {
Sint32 x;
Sint32 y;
} offset;
unsigned char color [3];
Uint8 compression;
struct {
Sint32 x;
Sint32 y;
} resolution;
struct {
char * name;
Uint32 flags;
Uint32 size;
char * data;
} parasite;
} data;
} xcf_prop;
typedef struct {
char sign [14];
Uint32 width;
Uint32 height;
Sint32 image_type;
xcf_prop * properties;
Uint32 * layer_file_offsets;
Uint32 * channel_file_offsets;
xcf_compr_type compr;
Uint32 cm_num;
unsigned char * cm_map;
} xcf_header;
typedef struct {
Uint32 width;
Uint32 height;
Sint32 layer_type;
char * name;
xcf_prop * properties;
Uint32 hierarchy_file_offset;
Uint32 layer_mask_offset;
Uint32 offset_x;
Uint32 offset_y;
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int visible;
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} xcf_layer;
typedef struct {
Uint32 width;
Uint32 height;
char * name;
xcf_prop * properties;
Uint32 hierarchy_file_offset;
Uint32 color;
Uint32 opacity;
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int selection;
int visible;
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} xcf_channel;
typedef struct {
Uint32 width;
Uint32 height;
Uint32 bpp;
Uint32 * level_file_offsets;
} xcf_hierarchy;
typedef struct {
Uint32 width;
Uint32 height;
Uint32 * tile_file_offsets;
} xcf_level;
typedef unsigned char * xcf_tile;
typedef unsigned char * (* load_tile_type) (SDL_RWops *, Uint32, int, int, int);
/* See if an image is contained in a data source */
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int IMG_isXCF(SDL_RWops *src)
{
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Sint64 start;
int is_XCF;
char magic[14];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_XCF = 0;
if ( SDL_RWread(src, magic, sizeof(magic), 1) ) {
if (SDL_strncmp(magic, "gimp xcf ", 9) == 0) {
is_XCF = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_XCF);
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}
static char * read_string (SDL_RWops * src) {
Uint32 tmp;
char * data;
tmp = SDL_ReadBE32 (src);
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Sint64 remaining = SDL_RWsize(src) - SDL_RWtell(src);
if (tmp > 0 && tmp < remaining) {
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data = (char *) SDL_malloc (sizeof (char) * tmp);
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SDL_RWread (src, data, tmp, 1);
}
else {
data = NULL;
}
return data;
}
static Uint32 Swap32 (Uint32 v) {
return
((v & 0x000000FF) << 16)
| ((v & 0x0000FF00))
| ((v & 0x00FF0000) >> 16)
| ((v & 0xFF000000));
}
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static void xcf_read_property (SDL_RWops * src, xcf_prop * prop) {
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Uint32 len;
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prop->id = SDL_ReadBE32 (src);
prop->length = SDL_ReadBE32 (src);
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#if DEBUG
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printf ("%.8X: %s: %d\n", SDL_RWtell (src), prop->id < 25 ? prop_names [prop->id] : "unknown", prop->length);
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#endif
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switch (prop->id) {
case PROP_COLORMAP:
prop->data.colormap.num = SDL_ReadBE32 (src);
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prop->data.colormap.cmap = (char *) SDL_malloc (sizeof (char) * prop->data.colormap.num * 3);
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SDL_RWread (src, prop->data.colormap.cmap, prop->data.colormap.num*3, 1);
break;
case PROP_OFFSETS:
prop->data.offset.x = SDL_ReadBE32 (src);
prop->data.offset.y = SDL_ReadBE32 (src);
break;
case PROP_OPACITY:
prop->data.opacity = SDL_ReadBE32 (src);
break;
case PROP_COMPRESSION:
case PROP_COLOR:
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if (prop->length > sizeof(prop->data)) {
len = sizeof(prop->data);
} else {
len = prop->length;
}
SDL_RWread(src, &prop->data, len, 1);
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break;
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case PROP_VISIBLE:
prop->data.visible = SDL_ReadBE32 (src);
break;
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default:
// SDL_RWread (src, &prop->data, prop->length, 1);
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SDL_RWseek (src, prop->length, RW_SEEK_CUR);
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}
}
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static void free_xcf_header (xcf_header * h) {
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if (h->cm_num)
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SDL_free (h->cm_map);
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if (h->layer_file_offsets)
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SDL_free (h->layer_file_offsets);
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SDL_free (h);
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}
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static xcf_header * read_xcf_header (SDL_RWops * src) {
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xcf_header * h;
xcf_prop prop;
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h = (xcf_header *) SDL_malloc (sizeof (xcf_header));
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if (!h) {
return NULL;
}
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SDL_RWread (src, h->sign, 14, 1);
h->width = SDL_ReadBE32 (src);
h->height = SDL_ReadBE32 (src);
h->image_type = SDL_ReadBE32 (src);
h->properties = NULL;
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h->layer_file_offsets = NULL;
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h->compr = COMPR_NONE;
h->cm_num = 0;
h->cm_map = NULL;
// Just read, don't save
do {
xcf_read_property (src, &prop);
if (prop.id == PROP_COMPRESSION)
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h->compr = (xcf_compr_type)prop.data.compression;
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else if (prop.id == PROP_COLORMAP) {
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// unused var: int i;
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Uint32 cm_num;
unsigned char *cm_map;
cm_num = prop.data.colormap.num;
cm_map = (unsigned char *) SDL_realloc(h->cm_map, sizeof (unsigned char) * 3 * cm_num);
if (cm_map) {
h->cm_num = cm_num;
h->cm_map = cm_map;
SDL_memcpy (h->cm_map, prop.data.colormap.cmap, 3*sizeof (char)*h->cm_num);
}
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SDL_free (prop.data.colormap.cmap);
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if (!cm_map) {
free_xcf_header(h);
return NULL;
}
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}
} while (prop.id != PROP_END);
return h;
}
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static void free_xcf_layer (xcf_layer * l) {
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SDL_free (l->name);
SDL_free (l);
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}
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static xcf_layer * read_xcf_layer (SDL_RWops * src) {
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xcf_layer * l;
xcf_prop prop;
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l = (xcf_layer *) SDL_malloc (sizeof (xcf_layer));
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l->width = SDL_ReadBE32 (src);
l->height = SDL_ReadBE32 (src);
l->layer_type = SDL_ReadBE32 (src);
l->name = read_string (src);
do {
xcf_read_property (src, &prop);
if (prop.id == PROP_OFFSETS) {
l->offset_x = prop.data.offset.x;
l->offset_y = prop.data.offset.y;
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} else if (prop.id == PROP_VISIBLE) {
l->visible = prop.data.visible ? 1 : 0;
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}
} while (prop.id != PROP_END);
l->hierarchy_file_offset = SDL_ReadBE32 (src);
l->layer_mask_offset = SDL_ReadBE32 (src);
return l;
}
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static void free_xcf_channel (xcf_channel * c) {
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SDL_free (c->name);
SDL_free (c);
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}
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static xcf_channel * read_xcf_channel (SDL_RWops * src) {
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xcf_channel * l;
xcf_prop prop;
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l = (xcf_channel *) SDL_malloc (sizeof (xcf_channel));
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l->width = SDL_ReadBE32 (src);
l->height = SDL_ReadBE32 (src);
l->name = read_string (src);
l->selection = 0;
do {
xcf_read_property (src, &prop);
switch (prop.id) {
case PROP_OPACITY:
l->opacity = prop.data.opacity << 24;
break;
case PROP_COLOR:
l->color = ((Uint32) prop.data.color[0] << 16)
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| ((Uint32) prop.data.color[1] << 8)
| ((Uint32) prop.data.color[2]);
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break;
case PROP_SELECTION:
l->selection = 1;
break;
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case PROP_VISIBLE:
l->visible = prop.data.visible ? 1 : 0;
break;
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default:
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;
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}
} while (prop.id != PROP_END);
l->hierarchy_file_offset = SDL_ReadBE32 (src);
return l;
}
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static void free_xcf_hierarchy (xcf_hierarchy * h) {
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SDL_free (h->level_file_offsets);
SDL_free (h);
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}
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static xcf_hierarchy * read_xcf_hierarchy (SDL_RWops * src) {
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xcf_hierarchy * h;
int i;
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h = (xcf_hierarchy *) SDL_malloc (sizeof (xcf_hierarchy));
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h->width = SDL_ReadBE32 (src);
h->height = SDL_ReadBE32 (src);
h->bpp = SDL_ReadBE32 (src);
h->level_file_offsets = NULL;
i = 0;
do {
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h->level_file_offsets = (Uint32 *) SDL_realloc (h->level_file_offsets, sizeof (Uint32) * (i+1));
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h->level_file_offsets [i] = SDL_ReadBE32 (src);
} while (h->level_file_offsets [i++]);
return h;
}
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static void free_xcf_level (xcf_level * l) {
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SDL_free (l->tile_file_offsets);
SDL_free (l);
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}
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static xcf_level * read_xcf_level (SDL_RWops * src) {
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xcf_level * l;
int i;
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l = (xcf_level *) SDL_malloc (sizeof (xcf_level));
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l->width = SDL_ReadBE32 (src);
l->height = SDL_ReadBE32 (src);
l->tile_file_offsets = NULL;
i = 0;
do {
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l->tile_file_offsets = (Uint32 *) SDL_realloc (l->tile_file_offsets, sizeof (Uint32) * (i+1));
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l->tile_file_offsets [i] = SDL_ReadBE32 (src);
} while (l->tile_file_offsets [i++]);
return l;
}
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static void free_xcf_tile (unsigned char * t) {
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SDL_free (t);
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}
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static unsigned char * load_xcf_tile_none (SDL_RWops * src, Uint32 len, int bpp, int x, int y) {
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unsigned char * load;
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load = (unsigned char *) SDL_malloc (len); // expect this is okay
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SDL_RWread (src, load, len, 1);
return load;
}
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static unsigned char * load_xcf_tile_rle (SDL_RWops * src, Uint32 len, int bpp, int x, int y) {
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unsigned char * load, * t, * data, * d;
Uint32 reallen;
int i, size, count, j, length;
unsigned char val;
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if (len == 0) { /* probably bogus data. */
return NULL;
}
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t = load = (unsigned char *) SDL_malloc (len);
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reallen = SDL_RWread (src, t, 1, len);
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data = (unsigned char *) SDL_calloc (1, x*y*bpp);
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for (i = 0; i < bpp; i++) {
d = data + i;
size = x*y;
count = 0;
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while (size > 0) {
val = *t++;
length = val;
if (length >= 128) {
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length = 255 - (length - 1);
if (length == 128) {
length = (*t << 8) + t[1];
t += 2;
}
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if (((size_t) (t - load) + length) >= len) {
break; /* bogus data */
} else if (length > size) {
break; /* bogus data */
}
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count += length;
size -= length;
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while (length-- > 0) {
*d = *t++;
d += bpp;
}
} else {
length += 1;
if (length == 128) {
length = (*t << 8) + t[1];
t += 2;
}
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if (((size_t) (t - load)) >= len) {
break; /* bogus data */
} else if (length > size) {
break; /* bogus data */
}
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count += length;
size -= length;
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val = *t++;
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for (j = 0; j < length; j++) {
*d = val;
d += bpp;
}
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}
}
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if (size > 0) {
break; /* just drop out, untouched data initialized to zero. */
}
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}
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SDL_free (load);
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return (data);
}
static Uint32 rgb2grey (Uint32 a) {
Uint8 l;
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l = (Uint8)(0.2990 * ((a & 0x00FF0000) >> 16)
+ 0.5870 * ((a & 0x0000FF00) >> 8)
+ 0.1140 * ((a & 0x000000FF)));
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return (l << 16) | (l << 8) | l;
}
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static void create_channel_surface (SDL_Surface * surf, xcf_image_type itype, Uint32 color, Uint32 opacity) {
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Uint32 c = 0;
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switch (itype) {
case IMAGE_RGB:
case IMAGE_INDEXED:
c = opacity | color;
break;
case IMAGE_GREYSCALE:
c = opacity | rgb2grey (color);
break;
}
SDL_FillRect (surf, NULL, c);
}
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static int
do_layer_surface(SDL_Surface * surface, SDL_RWops * src, xcf_header * head, xcf_layer * layer, load_tile_type load_tile)
{
xcf_hierarchy *hierarchy;
xcf_level *level;
unsigned char *tile;
Uint8 *p8;
Uint16 *p16;
Uint32 *p;
int i, j;
Uint32 x, y, tx, ty, ox, oy;
Uint32 *row;
SDL_RWseek(src, layer->hierarchy_file_offset, RW_SEEK_SET);
hierarchy = read_xcf_hierarchy(src);
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if (hierarchy->bpp > 4) { /* unsupported. */
SDL_Log("Unknown Gimp image bpp (%u)\n", (unsigned int) hierarchy->bpp);
free_xcf_hierarchy(hierarchy);
return 1;
}
if ((hierarchy->width > 20000) || (hierarchy->height > 20000)) { /* arbitrary limit to avoid integer overflow. */
SDL_Log("Gimp image too large (%ux%u)\n", (unsigned int) hierarchy->width, (unsigned int) hierarchy->height);
free_xcf_hierarchy(hierarchy);
return 1;
}
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level = NULL;
for (i = 0; hierarchy->level_file_offsets[i]; i++) {
SDL_RWseek(src, hierarchy->level_file_offsets[i], RW_SEEK_SET);
level = read_xcf_level(src);
ty = tx = 0;
for (j = 0; level->tile_file_offsets[j]; j++) {
SDL_RWseek(src, level->tile_file_offsets[j], RW_SEEK_SET);
ox = tx + 64 > level->width ? level->width % 64 : 64;
oy = ty + 64 > level->height ? level->height % 64 : 64;
if (level->tile_file_offsets[j + 1]) {
tile = load_tile(src, level->tile_file_offsets[j + 1] - level->tile_file_offsets[j], hierarchy->bpp, ox, oy);
} else {
tile = load_tile(src, ox * oy * 6, hierarchy->bpp, ox, oy);
}
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if (!tile) {
if (hierarchy) {
free_xcf_hierarchy(hierarchy);
}
if (level) {
free_xcf_level(level);
}
return 1;
}
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p8 = tile;
p16 = (Uint16 *) p8;
p = (Uint32 *) p8;
for (y = ty; y < ty + oy; y++) {
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if ((ty >= surface->h) || ((tx+ox) > surface->w)) {
break;
}
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row = (Uint32 *) ((Uint8 *) surface->pixels + y * surface->pitch + tx * 4);
switch (hierarchy->bpp) {
case 4:
for (x = tx; x < tx + ox; x++)
*row++ = Swap32(*p++);
break;
case 3:
for (x = tx; x < tx + ox; x++) {
*row = 0xFF000000;
*row |= ((Uint32)*p8++ << 16);
*row |= ((Uint32)*p8++ << 8);
*row |= ((Uint32)*p8++ << 0);
row++;
}
break;
case 2:
/* Indexed / Greyscale + Alpha */
switch (head->image_type) {
case IMAGE_INDEXED:
for (x = tx; x < tx + ox; x++) {
*row = ((Uint32)(head->cm_map[*p8 * 3]) << 16);
*row |= ((Uint32)(head->cm_map[*p8 * 3 + 1]) << 8);
*row |= ((Uint32)(head->cm_map[*p8++ * 3 + 2]) << 0);
*row |= ((Uint32)*p8++ << 24);
row++;
}
break;
case IMAGE_GREYSCALE:
for (x = tx; x < tx + ox; x++) {
*row = ((Uint32)*p8 << 16);
*row |= ((Uint32)*p8 << 8);
*row |= ((Uint32)*p8++ << 0);
*row |= ((Uint32)*p8++ << 24);
row++;
}
break;
default:
682
SDL_Log("Unknown Gimp image type (%d)\n", head->image_type);
683
684
685
686
687
688
689
690
691
692
if (hierarchy) {
free_xcf_hierarchy(hierarchy);
}
if (level)
free_xcf_level(level);
return 1;
}
break;
case 1:
/* Indexed / Greyscale */
693
switch (head->image_type) {
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
case IMAGE_INDEXED:
for (x = tx; x < tx + ox; x++) {
*row++ = 0xFF000000
| ((Uint32)(head->cm_map[*p8 * 3]) << 16)
| ((Uint32)(head->cm_map[*p8 * 3 + 1]) << 8)
| ((Uint32)(head->cm_map[*p8 * 3 + 2]) << 0);
p8++;
}
break;
case IMAGE_GREYSCALE:
for (x = tx; x < tx + ox; x++) {
*row++ = 0xFF000000
| (((Uint32)(*p8)) << 16)
| (((Uint32)(*p8)) << 8)
| (((Uint32)(*p8)) << 0);
++p8;
}
break;
default:
713
SDL_Log("Unknown Gimp image type (%d)\n", head->image_type);
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
if (tile)
free_xcf_tile(tile);
if (level)
free_xcf_level(level);
if (hierarchy)
free_xcf_hierarchy(hierarchy);
return 1;
}
break;
}
}
free_xcf_tile(tile);
tx += 64;
if (tx >= level->width) {
tx = 0;
ty += 64;
}
if (ty >= level->height) {
break;
}
735
}
736
free_xcf_level(level);
737
}
738
739
free_xcf_hierarchy(hierarchy);
740
741
return 0;
742
743
}
744
745
SDL_Surface *IMG_LoadXCF_RW(SDL_RWops *src)
{
746
Sint64 start;
747
const char *error = NULL;
748
749
750
751
SDL_Surface *surface, *lays;
xcf_header * head;
xcf_layer * layer;
xcf_channel ** channel;
752
int chnls, i, offsets;
753
Sint64 offset, fp;
754
755
756
unsigned char * (* load_tile) (SDL_RWops *, Uint32, int, int, int);
757
if (!src) {
758
759
760
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
761
start = SDL_RWtell(src);
762
763
764
765
/* Initialize the data we will clean up when we're done */
surface = NULL;
766
767
768
769
head = read_xcf_header(src);
if (!head) {
return NULL;
}
770
771
772
773
774
775
776
777
778
switch (head->compr) {
case COMPR_NONE:
load_tile = load_xcf_tile_none;
break;
case COMPR_RLE:
load_tile = load_xcf_tile_rle;
break;
default:
779
SDL_Log("Unsupported Compression.\n");
780
781
782
783
784
free_xcf_header (head);
return NULL;
}
/* Create the surface of the appropriate type */
785
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, head->width, head->height, 32,
786
0x00FF0000,0x0000FF00,0x000000FF,0xFF000000);
787
788
if ( surface == NULL ) {
789
error = "Out of memory";
790
791
792
793
794
goto done;
}
offsets = 0;
795
while ((offset = SDL_ReadBE32 (src))) {
796
head->layer_file_offsets = (Uint32 *) SDL_realloc (head->layer_file_offsets, sizeof (Uint32) * (offsets+1));
797
head->layer_file_offsets [offsets] = (Uint32)offset;
798
799
800
offsets++;
}
fp = SDL_RWtell (src);
801
802
lays = SDL_CreateRGBSurface(SDL_SWSURFACE, head->width, head->height, 32,
803
0x00FF0000,0x0000FF00,0x000000FF,0xFF000000);
804
805
if ( lays == NULL ) {
806
error = "Out of memory";
807
808
809
810
811
812
goto done;
}
// Blit layers backwards, because Gimp saves them highest first
for (i = offsets; i > 0; i--) {
SDL_Rect rs, rd;
813
SDL_RWseek (src, head->layer_file_offsets [i-1], RW_SEEK_SET);
814
815
816
817
818
819
820
821
822
823
824
825
layer = read_xcf_layer (src);
do_layer_surface (lays, src, head, layer, load_tile);
rs.x = 0;
rs.y = 0;
rs.w = layer->width;
rs.h = layer->height;
rd.x = layer->offset_x;
rd.y = layer->offset_y;
rd.w = layer->width;
rd.h = layer->height;
826
827
828
if (layer->visible)
SDL_BlitSurface (lays, &rs, surface, &rd);
free_xcf_layer (layer);
829
830
831
832
}
SDL_FreeSurface (lays);
833
SDL_RWseek (src, fp, RW_SEEK_SET);
834
835
836
837
// read channels
channel = NULL;
chnls = 0;
838
while ((offset = SDL_ReadBE32 (src))) {
839
channel = (xcf_channel **) SDL_realloc (channel, sizeof (xcf_channel *) * (chnls+1));
840
fp = SDL_RWtell (src);
841
SDL_RWseek (src, offset, RW_SEEK_SET);
842
channel [chnls++] = (read_xcf_channel (src));
843
SDL_RWseek (src, fp, RW_SEEK_SET);
844
845
846
847
848
}
if (chnls) {
SDL_Surface * chs;
849
chs = SDL_CreateRGBSurface(SDL_SWSURFACE, head->width, head->height, 32,
850
0x00FF0000,0x0000FF00,0x000000FF,0xFF000000);
851
852
if (chs == NULL) {
853
error = "Out of memory";
854
855
856
857
goto done;
}
for (i = 0; i < chnls; i++) {
// printf ("CNLBLT %i\n", i);
858
if (!channel [i]->selection && channel [i]->visible) {
859
860
create_channel_surface (chs, (xcf_image_type)head->image_type, channel [i]->color, channel [i]->opacity);
SDL_BlitSurface (chs, NULL, surface, NULL);
861
862
863
}
free_xcf_channel (channel [i]);
}
864
SDL_free(channel);
865
866
867
868
SDL_FreeSurface (chs);
}
869
done:
870
free_xcf_header (head);
871
if ( error ) {
872
SDL_RWseek(src, start, RW_SEEK_SET);
873
874
875
876
if ( surface ) {
SDL_FreeSurface(surface);
surface = NULL;
}
877
IMG_SetError("%s", error);
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
}
return(surface);
}
#else
/* See if an image is contained in a data source */
int IMG_isXCF(SDL_RWops *src)
{
return(0);
}
/* Load a XCF type image from an SDL datasource */
SDL_Surface *IMG_LoadXCF_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_XCF */