pike.git/src/modules/Image/encodings/xcf.c:ac0f0d7724ee815fc123fa3f273137e7773ce4ca

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1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 /* || This file is part of Pike. For copyright information see COPYRIGHT. || Pike is distributed under GPL, LGPL and MPL. See the file COPYING || for more information. */ #include "global.h" #include "image_machine.h" #include "pike_macros.h" #include "object.h" #include "module_support.h" #include "interpret.h" #include "object.h" #include "svalue.h" #include "threads.h" #include "interpret.h" #include "svalue.h" #include "mapping.h" #include "pike_error.h" #include "stralloc.h" #include "builtin_functions.h" #include "bignum.h" #include "pike_types.h" #include "image.h" #include "colortable.h" #define sp Pike_sp #define fp Pike_fp extern struct program *image_colortable_program; extern struct program *image_program; /* **! module Image **! submodule XCF **! */ #define TILE_WIDTH 64 #define TILE_HEIGHT 64 #define STRING(X) static struct pike_string *s_##X #include "xcf_constant_strings.h" #undef STRING struct buffer { struct pike_string *s; unsigned char *str; size_t len; }; struct substring { struct pike_string *s; ptrdiff_t offset; ptrdiff_t len; }; static struct program *substring_program; #define SS(X) ((struct substring*)X->storage) static void f_substring_cast( INT32 args ) { struct pike_string *type = sp[-args].u.string; pop_n_elems(args); /* type have at least one more reference. */ if( type == literal_string_string ) { struct substring *s = SS(fp->current_object); push_string( make_shared_binary_string( (((char *)s->s->str)+s->offset), s->len ) ); } else push_undefined(); } static void f_substring_index( INT32 args ) { ptrdiff_t i = sp[-1].u.integer; struct substring *s = SS(fp->current_object); pop_n_elems( args ); if( i < 0 ) i = s->len + i; if( i >= s->len ) { Pike_error("Index out of bounds, %ld > %ld\n", i, DO_NOT_WARN((long)s->len-1) ); } push_int( ((unsigned char *)s->s->str)[s->offset+i] ); } static void f_substring__sprintf( INT32 args ) { int x; struct substring *s = SS(fp->current_object); if (args != 2 ) SIMPLE_TOO_FEW_ARGS_ERROR("_sprintf",2); if (TYPEOF(sp[-2]) != T_INT) SIMPLE_BAD_ARG_ERROR("_sprintf",0,"integer"); if (TYPEOF(sp[-1]) != T_MAPPING) SIMPLE_BAD_ARG_ERROR("_sprintf",1,"mapping"); x = sp[-2].u.integer; pop_n_elems( args ); switch( x ) { case 't': push_text("SubString"); return; case 'O': push_text("SubString( %O /* [+%d .. %d] */ )" ); ref_push_string(literal_string_string); f_substring_cast( 1 ); push_int64( s->len ); push_int64( s->offset ); f_sprintf( 4 ); return; default: push_int(0); return; } } static void f_substring_get_int( INT32 UNUSED(args) ) { struct substring *s = SS(fp->current_object); int res; unsigned char *p; int x = sp[-1].u.integer; if( x > s->len>>2 ) Pike_error("Index %d out of range.\n", x ); p = ((unsigned char *)s->s->str) + s->offset + x*4; res = (p[0]<<24) | (p[1]<<16) | (p[2]<<8) | p[3]; push_int( res ); } static void f_substring_get_uint( INT32 UNUSED(args) ) { struct substring *s = SS(fp->current_object); unsigned int res; unsigned char *p; int x = sp[-1].u.integer; if( x > s->len>>2 ) Pike_error("Index %d out of range.\n", x ); p = ((unsigned char *)s->s->str) + s->offset + x*4; res = (p[0]<<24) | (p[1]<<16) | (p[2]<<8) | p[3]; push_int64( res ); } static void f_substring_get_ushort( INT32 UNUSED(args) ) { struct substring *s = SS(fp->current_object); unsigned short res; unsigned char *p; int x = sp[-1].u.integer; if( x > s->len>>1 ) Pike_error("Index %d out of range.\n", x ); p = ((unsigned char *)s->s->str) + s->offset + x*2; res = (p[2]<<8) | p[3]; push_int( res ); } static void f_substring_get_short( INT32 UNUSED(args) ) { struct substring *s = SS(fp->current_object); short res; unsigned char *p; int x = sp[-1].u.integer; if( x > s->len>>1 ) Pike_error("Index %d out of range.\n", x ); p = ((unsigned char *)s->s->str) + s->offset + x*2; res = (p[2]<<8) | p[3]; push_int( res ); } static void push_substring( struct pike_string *s, ptrdiff_t offset, ptrdiff_t len ) { struct object *o = clone_object( substring_program, 0 ); struct substring *ss = SS(o); ss->s = s; s->refs++; ss->offset = offset; ss->len = len; push_object( o ); } static void free_substring(struct object *UNUSED(o)) { if( SS(fp->current_object)->s ) { free_string( SS(fp->current_object)->s ); SS(fp->current_object)->s = 0; } } 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 } property_type; typedef enum { RGB = 0, GRAY = 1, INDEXED = 2, } image_type; typedef enum { Red, Green, Blue, Gray, Indexed, Auxillary } channel_type; typedef enum { RGB_GIMAGE, RGBA_GIMAGE, GRAY_GIMAGE, GRAYA_GIMAGE, INDEXED_GIMAGE, INDEXEDA_GIMAGE } layer_type; typedef enum { /*< chop=_MODE >*/ NORMAL_MODE, DISSOLVE_MODE, BEHIND_MODE, MULTIPLY_MODE, /*< nick=MULTIPLY/BURN >*/ SCREEN_MODE, OVERLAY_MODE, DIFFERENCE_MODE, ADDITION_MODE, SUBTRACT_MODE, DARKEN_ONLY_MODE, /*< nick=DARKEN-ONLY >*/ LIGHTEN_ONLY_MODE, /*< nick=LIGHTEN-ONLY >*/ HUE_MODE, SATURATION_MODE, COLOR_MODE, VALUE_MODE, DIVIDE_MODE, /*< nick=DIVIDE/DODGE >*/ ERASE_MODE, REPLACE_MODE, } LayerModeEffects; typedef enum { COMPRESS_NONE = 0, COMPRESS_RLE = 1, COMPRESS_ZLIB = 2, COMPRESS_FRACTAL = 3, } compression_type; struct property { int type; struct buffer data; struct property *next; }; static unsigned int read_uint( struct buffer *from ) { unsigned int res; if(from->len < 4) Pike_error("Not enough space for 4 bytes (uint32)\n"); res = (from->str[0]<<24)|(from->str[1]<<16)|(from->str[2]<<8)|from->str[3]; from->str += 4; from->len -= 4; return res; } static int xcf_read_int( struct buffer *from ) { return (int)read_uint( from ); } static char *read_data( struct buffer *from, size_t len ) { char *res; if( from->len < len ) Pike_error("Not enough space for %lu bytes\n", DO_NOT_WARN((unsigned long)len)); res = (char *)from->str; from->str += len; from->len -= len; return res; } static struct buffer read_string( struct buffer *data ) { struct buffer res = *data; res.len = xcf_read_int( data ); res.str = (unsigned char *)read_data( data, res.len ); if(res.len > 0) res.len--; /* len includes ending \0 */ if(!res.str) Pike_error("String read failed\n"); return res; } static struct property read_property( struct buffer * data ) { struct property res; res.type = read_uint( data ); if(res.type == PROP_COLORMAP) { unsigned int foo; read_uint(data); /* bogus 'len'... */ foo = read_uint( data ); res.data.len = foo*3; res.data.str = (unsigned char *)read_data( data,foo*3 ); res.data.s = data->s; } else { res.data.len = read_uint( data ); res.data.str = (unsigned char *)read_data( data,res.data.len ); res.data.s = data->s; } res.next = NULL; return res; } struct tile { struct tile *next; struct buffer data; }; struct level { unsigned int width; unsigned int height; struct tile *first_tile; }; struct hierarchy { unsigned int width; unsigned int height; unsigned int bpp; struct level level; }; struct channel { struct channel *next; unsigned int width; unsigned int height; struct buffer name; struct hierarchy image_data; struct property *first_property; }; struct layer_mask { unsigned int width; unsigned int height; struct buffer name; struct hierarchy image_data; struct property *first_property; }; struct layer { struct layer *next; unsigned int width; unsigned int height; int type; struct buffer name; struct hierarchy image_data; struct property *first_property; struct layer_mask *mask; }; struct gimp_image { unsigned int width; unsigned int height; int type; struct property *first_property; struct layer *first_layer; /* OBS: In reverse order! */ struct channel *first_channel; /* OBS: In reverse order! */ }; static void free_level( struct level *l ) { struct tile *t; while( (t = l->first_tile) ) { l->first_tile = t->next; free(t); } } static void free_layer_mask( struct layer_mask *l ) { struct property *p; while( (p = l->first_property) ) { l->first_property = p->next; free(p); } free_level( &l->image_data.level ); } static void free_layer( struct layer *l ) { struct property *p; while( (p = l->first_property) ) { l->first_property = p->next; free(p); } if(l->mask) { free_layer_mask( l->mask ); free( l->mask ); } free_level( &l->image_data.level ); } static void free_channel( struct channel *l ) { struct property *p; while( (p = l->first_property) ) { l->first_property = p->next; free(p); } free_level( &l->image_data.level ); } static void free_image( struct gimp_image *i ) { struct property *p; struct layer *l; struct channel *c; while( (p = i->first_property) ) { i->first_property = p->next; free(p); } while( (l = i->first_layer) ) { i->first_layer = l->next; free_layer( l ); free( l ); } while( (c = i->first_channel) ) { i->first_channel = c->next; free_channel(c); free(c); } } static struct level read_level( struct buffer *buff, struct buffer *initial ) { struct level res; ONERROR err; int offset; struct tile *last_tile = NULL; /* int all_tiles_eq = 0; */ MEMSET(&res, 0, sizeof(res)); res.width = read_uint( buff ); res.height = read_uint( buff ); SET_ONERROR( err, free_level, &res ); offset = read_uint( buff ); while(offset) { struct buffer ob = *initial; int offset2 = read_uint( buff ); struct tile *tile = xalloc(sizeof(struct tile)); read_data( &ob, offset ); if(last_tile) last_tile->next = tile; last_tile = tile; if(!res.first_tile) res.first_tile = tile; tile->data = ob; tile->next = NULL; offset = offset2; } UNSET_ONERROR( err ); return res; } static struct hierarchy read_hierarchy( struct buffer *buff, struct buffer *initial ) { struct hierarchy res; unsigned int offset; struct buffer ob; MEMSET(&res, 0, sizeof(res)); res.width = read_uint( buff ); res.height = read_uint( buff ); res.bpp = read_uint( buff ); offset = read_uint( buff ); ob = *initial; read_data( &ob, offset ); res.level = read_level( &ob, initial ); return res; } static struct layer_mask read_layer_mask( struct buffer *buff, struct buffer *initial ) { struct layer_mask res; ONERROR err; int offset; struct property tmp; MEMSET(&res, 0, sizeof(res)); res.width = read_uint( buff ); res.height = read_uint( buff ); res.name = read_string( buff ); SET_ONERROR( err, free_layer_mask, &res ); do { tmp = read_property( buff ); if(tmp.type) { struct property *s = xalloc(sizeof(struct property)); *s = tmp; s->next = res.first_property; res.first_property = s; } } while(tmp.type); offset = read_uint( buff ); if(offset) { struct buffer ob = *initial; read_data( &ob, offset ); res.image_data = read_hierarchy( &ob, initial ); } UNSET_ONERROR( err ); return res; } static struct channel read_channel( struct buffer *buff, struct buffer *initial ) { struct channel res; ONERROR err; int offset; struct property tmp; MEMSET(&res, 0, sizeof(res)); res.width = read_uint( buff ); res.height = read_uint( buff ); res.name = read_string( buff ); SET_ONERROR( err, free_channel, &res ); do { tmp = read_property( buff ); if(tmp.type) { struct property *s = xalloc( sizeof(struct property )); *s = tmp; s->next = res.first_property; res.first_property = s; } } while( tmp.type ); offset = read_uint( buff ); if(offset) { struct buffer ob = *initial; read_data( &ob, offset ); res.image_data = read_hierarchy( &ob, initial ); } UNSET_ONERROR( err ); return res; } static struct layer read_layer( struct buffer *buff, struct buffer *initial ) { struct layer res; struct property tmp; int lm_offset; int h_offset; ONERROR err; MEMSET(&res, 0, sizeof(res)); SET_ONERROR( err, free_layer, &res ); res.width = read_uint( buff ); res.height = read_uint( buff ); res.type = xcf_read_int( buff ); res.name = read_string( buff ); do { tmp = read_property( buff ); if(tmp.type) { struct property *s=xalloc( sizeof(struct property )); *s = tmp; s->next = res.first_property; res.first_property = s; } } while( tmp.type ); h_offset = xcf_read_int( buff ); lm_offset = xcf_read_int( buff ); if(lm_offset) { struct buffer loffset = *initial; struct layer_mask *m=xalloc(sizeof(struct layer_mask)); res.mask = m; read_data( &loffset, lm_offset ); MEMSET(m, 0, sizeof( struct layer_mask )); *m = read_layer_mask( &loffset, initial ); } if(h_offset) { struct buffer loffset = *initial; read_data( &loffset, h_offset ); res.image_data = read_hierarchy( &loffset, initial ); } UNSET_ONERROR( err ); return res; } static struct gimp_image read_image( struct buffer * data ) { struct gimp_image res; struct property tmp; struct buffer initial; unsigned int offset; ONERROR err; MEMSET(&res, 0, sizeof(res)); initial = *data; if(data->len < 34) Pike_error("This is not an xcf file (to little data)\n"); if(!(data->str[0] == 'g' && data->str[1] == 'i' && data->str[2] == 'm' && data->str[3] == 'p' && data->str[4] == ' ')) { if(strlen((char *)data->str) == 13) Pike_error("This is not an xcf file (%s)\n", data->str); else Pike_error("This is not an xcf file\n"); } data->str+=14; data->len-=14; res.width = read_uint( data ); res.height = read_uint( data ); res.type = xcf_read_int( data ); SET_ONERROR( err, free_image, &res ); do { tmp = read_property( data ); if(tmp.type) { struct property *s=xalloc( sizeof(struct property )); *s = tmp; s->next = res.first_property; res.first_property = s; } } while( tmp.type ); while( (offset = read_uint( data )) ) { struct buffer layer_data = initial; struct layer tmp; read_data( &layer_data, offset ); tmp = read_layer( &layer_data, &initial ); if( tmp.width && tmp.height ) { struct layer *s = xalloc( sizeof(struct layer)); *s = tmp; s->next = res.first_layer; res.first_layer = s; } } while( (offset = read_uint( data )) ) { struct buffer channel_data = initial; struct channel tmp; read_data( &channel_data, offset ); tmp = read_channel( &channel_data, &initial ); if( tmp.width && tmp.height ) { struct channel *s = xalloc( sizeof(struct channel)); *s = tmp; s->next = res.first_channel; res.first_channel = s; } } UNSET_ONERROR( err ); return res; } static void push_buffer( struct buffer *b ) { push_substring( b->s, b->str - (unsigned char *)b->s->str, b->len ); /* push_string( make_shared_binary_string( (char *)b->str, b->len ) );*/ } static void push_properties( struct property *p ) { struct svalue *osp = sp; while(p) { ref_push_string( s_type ); push_int( p->type ); ref_push_string( s_data ); push_buffer( &p->data ); f_aggregate_mapping( 4 ); p = p->next; } f_aggregate(DO_NOT_WARN((INT32)(sp - osp))); } static void push_tile( struct tile *t ) { push_buffer( &t->data ); } static void push_hierarchy( struct hierarchy * h ) { struct tile *t = h->level.first_tile; struct svalue *osp = sp, *tsp; if(h->level.width != h->width || h->level.height != h->height) Pike_error("Illegal hierarchy level sizes!\n"); ref_push_string( s_width ); push_int( h->width ); ref_push_string( s_height ); push_int( h->height ); ref_push_string( s_bpp ); push_int( h->bpp ); ref_push_string( s_tiles ); tsp = sp; while(t) { push_tile( t ); t=t->next; } f_aggregate(DO_NOT_WARN((INT32)(sp - tsp))); f_aggregate_mapping(DO_NOT_WARN((INT32)(sp - osp))); } static void push_layer_mask(struct layer_mask *i) { struct svalue *osp = sp; ref_push_string( s_width ); push_int( i->width ); ref_push_string( s_height ); push_int( i->height ); ref_push_string( s_properties ); push_properties( i->first_property ); ref_push_string( s_name ); push_buffer( &i->name ); ref_push_string( s_image_data ); push_hierarchy( &i->image_data ); f_aggregate_mapping(DO_NOT_WARN((INT32)(sp-osp))); } static void push_channel(struct channel *i) { struct svalue *osp = sp; ref_push_string( s_width ); push_int( i->width ); ref_push_string( s_height ); push_int( i->height ); ref_push_string( s_properties ); push_properties( i->first_property ); ref_push_string( s_name ); push_buffer( &i->name ); ref_push_string( s_image_data ); push_hierarchy( &i->image_data ); f_aggregate_mapping(DO_NOT_WARN((INT32)(sp-osp))); } static void push_layer(struct layer *i) { struct svalue *osp = sp; ref_push_string( s_width ); push_int( i->width ); ref_push_string( s_height ); push_int( i->height ); ref_push_string( s_type ); push_int( i->type ); ref_push_string( s_properties ); push_properties( i->first_property ); ref_push_string( s_name ); push_buffer( &i->name ); ref_push_string( s_image_data ); push_hierarchy( &i->image_data ); if( i->mask ) { ref_push_string( s_mask ); push_layer_mask( i->mask ); } f_aggregate_mapping(DO_NOT_WARN((INT32)(sp - osp))); } static void push_image( struct gimp_image *i ) { struct layer *l; struct channel *c; int nitems = 0; struct svalue *osp = sp; ref_push_string( s_width ); push_int( i->width ); ref_push_string( s_height ); push_int( i->height ); ref_push_string( s_type ); push_int( i->type ); ref_push_string( s_properties ); push_properties( i->first_property ); ref_push_string( s_layers ); l = i->first_layer; while(l) { nitems++; push_layer( l ); l = l->next; } f_aggregate( nitems ); ref_push_string( s_channels ); nitems=0; c = i->first_channel; while(c) { nitems++; push_channel( c ); c = c->next; } f_aggregate( nitems ); f_aggregate_mapping(DO_NOT_WARN((INT32)(sp-osp))); } static void image_xcf____decode( INT32 args ) { struct pike_string *s; struct buffer b; struct gimp_image res; ONERROR err; get_all_args( "___decode", args, "%S", &s ); if(args > 1) Pike_error("Too many arguments to Image.XCF.___decode()\n"); b.s = s; b.len = s->len; b.str = (unsigned char *)s->str; res = read_image( &b ); SET_ONERROR( err, free_image, &res ); push_image( &res ); UNSET_ONERROR( err ); free_image( &res ); stack_swap(); pop_stack(); } static unsigned char read_char( struct buffer *from ) { unsigned char res = 0; if(from->len) { res = from->str[0]; from->str++; from->len--; } return res; } /* **! method array(object) decode_layers( string data ) **! method array(object) decode_layers( string data, mapping options ) **! Decodes a XCF image to an array of Image.Layer objects **! **! The layer object have the following extra variables (to be queried **! using get_misc_value): **! **! image_xres, image_yres, image_colormap, image_guides, image_parasites, **! name, parasites, visible, active **! **! Takes the same argument mapping as <ref>_decode</ref>, **! note especially "draw_all_layers":1. */ /* **! method object decode(string data) **! Decodes a XCF image to a single image object. **! **! note **! Throws upon error in data, you will loose quite a lot of **! information by doing this. See Image.XCF._decode and Image.XCF.__decode */ /* **! method mapping _decode(string|object data,mapping|void options) **! Decodes a XCF image to a mapping, with at least an **! 'image' and possibly an 'alpha' object. Data is either a XCF image, or **! a XCF.GimpImage object structure (as received from __decode) **! **! <pre> Supported options **! ([ **! "background":({r,g,b})||Image.Color object **! "draw_all_layers":1, **! Draw invisible layers as well **! **! "draw_guides":1, **! Draw the guides **! **! "draw_selection":1, **! Mark the selection using an overlay **! **! "ignore_unknown_layer_modes":1 **! Do not asume 'Normal' for unknown layer modes. **! **! "mark_layers":1, **! Draw an outline around all (drawn) layers **! **! "mark_layer_names":Image.Font object, **! Write the name of all layers using the font object, **! **! "mark_active_layer":1, **! Draw an outline around the active layer **! ])</pre> **! **! note **! Throws upon error in data. For more information, see Image.XCF.__decode */ /* **! method object __decode(string|mapping data, mapping|void options) **! Decodes a XCF image to a Image.XCF.GimpImage object. **! **! <pre>Returned structure reference **! **! !class GimpImage **! { **! int width; **! int height; **! int compression; **! int type; **! int tattoo_state; **! float xres = 72.0; **! float yres = 72.0; **! int res_unit; **! Image.Colortable colormap; **! Image.Colortable meta_colormap; **! array(Layer) layers = ({}); **! array(Channel) channels = ({}); **! array(Guide) guides = ({}); **! array(Parasite) parasites = ({}); **! array(Path) paths = ({}); **! **! Layer active_layer; **! Channel active_channel; **! Channel selection; **! } **! **! !class Layer **! { **! string name; **! int opacity; **! int type; **! int mode; **! int tattoo; **! mapping flags = ([]); **! int width, height; **! int xoffset, yoffset; **! array (Parasite) parasites; **! LayerMask mask; **! Hierarchy image; **! } **! **! !class Channel **! { **! string name; **! int width; **! int height; **! int opacity; **! int r, g, b; **! int tattoo; **! Hierarchy image_data; **! object parent; **! mapping flags = ([]); **! array (Parasite) parasites; **! } **! **! !class Hierarchy **! { **! Image.Image img; **! Image.Image alpha; **! int width; **! int height; **! int bpp; **! } **! **! !class Parasite **! { **! string name; **! int flags; **! string data; **! } **! **! **! !class Guide **! { **! int pos; **! int vertical; **! } **! **! !class Path **! { **! string name; **! int ptype; **! int tattoo; **! int closed; **! int state; **! int locked; **! array (PathPoint) points = ({}); **! } **! **! !class PathPoint **! { **! int type; **! float x; **! float y; **! } **! **! </pre> */ /* **! method object ___decode(string|mapping data) **! Decodes a XCF image to a mapping. **! **! <pre>Structure reference **! **! ([ **! "width":int, **! "height":int, **! "type":int, **! "properties":({ **! ([ **! "type":int, **! "data":string, **! ]), **! ... **! }), **! "layers":({ **! ([ **! "name":string, **! "width":int, **! "height":int, **! "type":type, **! "properties":({ **! ([ **! "type":int, **! "data":string, **! ]), **! ... **! }), **! "mask":0 || ([ **! "name":string, **! "width":int, **! "height":int, **! "properties":({ **! ([ **! "type":int, **! "data":string, **! ]), **! ... **! }), **! "image_data":([ **! "bpp":int, **! "width":int, **! "height":int, **! "tiles":({ **! string, **! ... **! }), **! ]), **! ]), **! "image_data":([ **! "bpp":int, **! "width":int, **! "height":int, **! "tiles":({ **! string, **! ... **! }), **! ]), **! ]), **! ... **! }), **! "channels":({ **! "name":string, **! "width":int, **! "height":int, **! "properties":({ **! ([ **! "type":int, **! "data":string, **! ]), **! ... **! }), **! "image_data":([ **! "bpp":int, **! "width":int, **! "height":int, **! "tiles":({ **! string, **! ... **! }), **! ]), **! }), **! ]) **!</pre> */ void image_xcf_f__decode_tiles( INT32 args ) { struct object *io,*ao, *cmapo; struct array *tiles; struct image *i=NULL, *a=NULL; struct neo_colortable *cmap = NULL; INT32 rxs, rys; rgb_group *colortable=NULL; rgb_group pix = {0,0,0}; rgb_group apix= {255,255,255}; /* avoid may use uninitialized warnings */ INT_TYPE rle, bpp, span, shrink; unsigned int l, x=0, y=0, cx, cy; ONERROR err; get_all_args( "_decode_tiles", args, "%o%O%a%i%i%O%i%d%d", &io, &ao, &tiles, &rle, &bpp, &cmapo, &shrink, &rxs, &rys); if( !(i = get_storage( io, image_program ))) Pike_error("Wrong type object argument 1 (image)\n"); if(ao && !(a = get_storage( ao, image_program ))) Pike_error("Wrong type object argument 2 (image)\n"); if( cmapo && !(cmap=get_storage(cmapo, image_colortable_program))) Pike_error("Wrong type object argument 4 (colortable)\n"); for(l=0; l<(unsigned int)tiles->size; l++) if(TYPEOF(tiles->item[l]) != T_OBJECT) Pike_error("Wrong type array argument 3 (tiles)\n"); if(a && ((i->xsize != a->xsize) || (i->ysize != a->ysize))) Pike_error("Image and alpha objects are not identically sized.\n"); if(cmap) { colortable = xalloc(sizeof(rgb_group)*image_colortable_size( cmap ) + RGB_VEC_PAD); SET_ONERROR(err, free, colortable); image_colortable_write_rgb( cmap, (unsigned char *)colortable ); } x=y=0; THREADS_ALLOW(); for(l=0; l<(unsigned)tiles->size; l++) { struct object *to = tiles->item[l].u.object; struct substring *tile_ss = SS(to); struct buffer tile; char *df = 0; unsigned int eheight, ewidth; unsigned char *s; if(!tile_ss) continue; tile.s = NULL; tile.str = (unsigned char *)(tile_ss->s->str + tile_ss->offset); tile.len = tile_ss->len; ewidth = MINIMUM(TILE_WIDTH, (rxs-x)); eheight = MINIMUM(TILE_HEIGHT, (rys-y)); if( (double)ewidth * eheight * bpp > INT_MAX ) Pike_error("Insanely large tiles not supported\n"); if(rle) { struct buffer s = tile, od, d; int i; od.s = NULL; od.len = eheight*ewidth*bpp; /* Max and only size, really */ df = (char *)(od.str = xalloc( eheight*ewidth*bpp+1 )); d = od; for(i=0; i<bpp; i++) { int nelems = ewidth*eheight; int length; while(nelems) { unsigned char val = read_char( &s ); if(!s.len) { break; /* Hm. This is actually rather fatal */ } length = val; if( length >= 128 ) { length = 255-(length-1); if (length == 128) length = (read_char( &s )<<8) + read_char( &s ); nelems -= length; while(length--) { if(d.len < 1) break; d.str[0] = read_char( &s ); d.str++; d.len--; } } else { length++; if(length == 128) length = (read_char( &s )<<8) + read_char( &s ); nelems -= length; val = read_char( &s ); while(length--) { if(d.len < 1) break; d.str[0] = val; d.str++; d.len--; } } } } tile = od; } if( (size_t)(tile.len) < (size_t)(eheight * ewidth * bpp )) { if( df ) free( df ); df=0; continue; } s = (unsigned char *)tile.str; #define LOOP_INIT() {\ int ix, iy=y/shrink; \ for(cy=0; cy<eheight; cy+=shrink,iy=((cy+y)/shrink)) \ { \ rgb_group *ip, *ap = NULL; \ int ind=cy*ewidth; \ int ds = 0; \ if(iy >= i->ysize) continue; \ ix = x/shrink; \ ip = i->img + (i->xsize*iy); \ if( a ) ap = a->img + (i->xsize*iy); \ for(cx=0; cx<ewidth; cx+=shrink,ind+=shrink,ix++) \ { \ if(ix >= i->xsize) continue #define LOOP_EXIT() \ ip[ix] = pix; \ } \ }} if(rle) span = ewidth*eheight; else span = 1; switch(bpp) { case 1: /* indexed or grey */ if(colortable) { LOOP_INIT(); pix = colortable[s[ind]]; LOOP_EXIT(); } else { LOOP_INIT(); pix.r = pix.g = pix.b = s[ind]; LOOP_EXIT(); } break; case 2: /* indexed or grey with alpha */ if(colortable) { LOOP_INIT(); pix = colortable[ s[ ind ] ]; if( a ) { apix.r = apix.g = apix.b = s[ind+span]; ap[ix] = apix; } LOOP_EXIT(); } else { LOOP_INIT(); pix.r = pix.g = pix.b = s[ind]; if( a ) { apix.r = apix.g = apix.b = s[ind+span]; ap[ix] = apix; } LOOP_EXIT(); } break; case 3: /* rgb */ LOOP_INIT(); pix.r = s[ind]; pix.g = s[ind+span]; pix.b = s[ind+span*2]; LOOP_EXIT(); break; case 4: /* rgba */ LOOP_INIT(); pix.r = s[ind]; pix.g = s[ind+span]; pix.b = s[ind+span*2]; if(a) { apix.r = apix.b = apix.g = s[ind+span*3]; ap[ix] = apix; } LOOP_EXIT(); break; } if( df ) { free(df); df=0; } x += TILE_WIDTH; if( (int)x >= (int)rxs ) { x = 0; y += TILE_HEIGHT; } } THREADS_DISALLOW(); if(colortable) { UNSET_ONERROR(err); free( colortable ); } pop_n_elems(args); push_int(0); } static struct program *image_encoding_xcf_program=NULL; void init_image_xcf(void) { ADD_FUNCTION( "___decode", image_xcf____decode, tFunc(tStr,tMapping), 0); ADD_FUNCTION( "_decode_tiles", image_xcf_f__decode_tiles, tFunction, 0); add_integer_constant( "PROP_END", PROP_END,0 ); add_integer_constant( "PROP_COLORMAP", PROP_COLORMAP, 0 ); add_integer_constant( "PROP_ACTIVE_LAYER", PROP_ACTIVE_LAYER, 0 ); add_integer_constant( "PROP_ACTIVE_CHANNEL", PROP_ACTIVE_CHANNEL, 0 ); add_integer_constant( "PROP_SELECTION", PROP_SELECTION, 0 ); add_integer_constant( "PROP_FLOATING_SELECTION", PROP_FLOATING_SELECTION, 0 ); add_integer_constant( "PROP_OPACITY", PROP_OPACITY, 0 ); add_integer_constant( "PROP_MODE", PROP_MODE, 0 ); add_integer_constant( "PROP_VISIBLE", PROP_VISIBLE, 0 ); add_integer_constant( "PROP_LINKED", PROP_LINKED, 0 ); add_integer_constant( "PROP_PRESERVE_TRANSPARENCY", PROP_PRESERVE_TRANSPARENCY, 0); add_integer_constant( "PROP_APPLY_MASK", PROP_APPLY_MASK, 0 ); add_integer_constant( "PROP_EDIT_MASK", PROP_EDIT_MASK, 0 ); add_integer_constant( "PROP_SHOW_MASK", PROP_SHOW_MASK, 0 ); add_integer_constant( "PROP_SHOW_MASKED", PROP_SHOW_MASKED, 0 ); add_integer_constant( "PROP_OFFSETS", PROP_OFFSETS, 0 ); add_integer_constant( "PROP_COLOR", PROP_COLOR, 0 ); add_integer_constant( "PROP_COMPRESSION", PROP_COMPRESSION, 0 ); add_integer_constant( "PROP_GUIDES", PROP_GUIDES, 0 ); add_integer_constant( "PROP_RESOLUTION", PROP_RESOLUTION, 0 ); add_integer_constant( "PROP_TATTOO", PROP_TATTOO, 0 ); add_integer_constant( "PROP_PARASITES", PROP_PARASITES, 0 ); add_integer_constant( "PROP_UNIT", PROP_UNIT, 0 ); add_integer_constant( "PROP_PATHS", PROP_PATHS, 0 ); add_integer_constant( "PROP_USER_UNIT", PROP_USER_UNIT, 0 ); add_integer_constant( "RGB", RGB, 0 ); add_integer_constant( "GRAY", GRAY, 0 ); add_integer_constant( "INDEXED", INDEXED, 0 ); add_integer_constant( "COMPRESS_NONE", COMPRESS_NONE, 0 ); add_integer_constant( "COMPRESS_RLE", COMPRESS_RLE, 0 ); add_integer_constant( "COMPRESS_ZLIB", COMPRESS_ZLIB, 0 ); add_integer_constant( "COMPRESS_FRACTAL", COMPRESS_FRACTAL, 0 ); add_integer_constant("NORMAL_MODE", NORMAL_MODE, 0); add_integer_constant("DISSOLVE_MODE", DISSOLVE_MODE, 0); add_integer_constant("BEHIND_MODE",BEHIND_MODE, 0); add_integer_constant("MULTIPLY_MODE",MULTIPLY_MODE, 0); add_integer_constant("SCREEN_MODE",SCREEN_MODE, 0); add_integer_constant("OVERLAY_MODE",OVERLAY_MODE, 0); add_integer_constant("DIFFERENCE_MODE",DIFFERENCE_MODE, 0); add_integer_constant("ADDITION_MODE",ADDITION_MODE, 0); add_integer_constant("SUBTRACT_MODE",SUBTRACT_MODE, 0); add_integer_constant("DARKEN_ONLY_MODE",DARKEN_ONLY_MODE, 0); add_integer_constant("LIGHTEN_ONLY_MODE",LIGHTEN_ONLY_MODE, 0); add_integer_constant("HUE_MODE",HUE_MODE, 0); add_integer_constant("SATURATION_MODE",SATURATION_MODE, 0); add_integer_constant("COLOR_MODE",COLOR_MODE, 0); add_integer_constant("VALUE_MODE",VALUE_MODE, 0); add_integer_constant("DIVIDE_MODE",DIVIDE_MODE, 0); add_integer_constant("ERASE_MODE",ERASE_MODE, 0); add_integer_constant("REPLACE_MODE",REPLACE_MODE, 0); add_integer_constant( "Red", Red, 0 ); add_integer_constant( "Green", Green, 0 ); add_integer_constant( "Blue", Blue, 0 ); add_integer_constant( "Gray", Gray, 0 ); add_integer_constant( "Indexed", Indexed, 0 ); add_integer_constant( "Auxillary", Auxillary, 0 ); add_integer_constant( "RGB_GIMAGE", RGB_GIMAGE, 0 ); add_integer_constant( "RGBA_GIMAGE", RGBA_GIMAGE, 0 ); add_integer_constant( "GRAY_GIMAGE", GRAY_GIMAGE, 0 ); add_integer_constant( "GRAYA_GIMAGE", GRAYA_GIMAGE, 0 ); add_integer_constant( "INDEXED_GIMAGE", INDEXED_GIMAGE, 0 ); add_integer_constant( "INDEXEDA_GIMAGE", INDEXEDA_GIMAGE, 0 ); #define STRING(X) s_##X = make_shared_binary_string(#X,sizeof( #X )-sizeof("")) #include "xcf_constant_strings.h" #undef STRING start_new_program(); ADD_STORAGE( struct substring ); ADD_FUNCTION("cast", f_substring_cast, tFunc(tStr,tMix), ID_PRIVATE); ADD_FUNCTION("`[]", f_substring_index, tFunc(tInt,tInt), 0); ADD_FUNCTION("get_short", f_substring_get_short, tFunc(tInt,tInt), 0 ); ADD_FUNCTION("get_ushort", f_substring_get_ushort, tFunc(tInt,tInt), 0 ); ADD_FUNCTION("get_int", f_substring_get_int, tFunc(tInt,tInt), 0 ); ADD_FUNCTION("get_uint", f_substring_get_uint, tFunc(tInt,tInt), 0 ); ADD_FUNCTION("_sprintf",f_substring__sprintf, tFunc(tInt tMapping,tMix), 0); /* set_init_callback(init_substring); */ set_exit_callback(free_substring); substring_program = end_program(); } void exit_image_xcf(void) { #define STRING(X) free_string(s_##X) #include "xcf_constant_strings.h" #undef STRING free_program( substring_program ); }

pike.git/ src/ modules/ Image/ encodings/ xcf.c > ac0f0d7724ee815fc123fa3f273137e7773ce4ca [Annotate]