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/*
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
* allocimbuf.c
*
* $Id$
*/
/** \file blender/imbuf/intern/readimage.c
* \ingroup imbuf
*/
#ifdef _WIN32
#include <io.h>
#include <stddef.h>
#include <sys/types.h>
#include "mmap_win.h"
#define open _open
#define read _read
#define close _close
#endif
#include "BLI_blenlib.h"
#include "imbuf.h"
#include "IMB_imbuf_types.h"
#include "IMB_imbuf.h"
#include "IMB_filetype.h"
static ImBuf *imb_ibImageFromFile(const char *filepath, int flags)
{
ImBuf *ibuf;
ImFileType *type;
for(type=IMB_FILE_TYPES; type->is_a; type++) {
if(type->load_filepath) {
ibuf= type->load_filepath(filepath, flags);
if(ibuf) {
if(flags & IB_premul) {
IMB_premultiply_alpha(ibuf);
ibuf->flags |= IB_premul;
}
return ibuf;
}
}
}
return NULL;
}
ImBuf *IMB_ibImageFromMemory(unsigned char *mem, size_t size, int flags)
{
ImBuf *ibuf;
ImFileType *type;
if(mem == NULL) {
printf("Error in ibImageFromMemory: NULL pointer\n");
return NULL;
}
for(type=IMB_FILE_TYPES; type->is_a; type++) {
if(type->load) {
ibuf= type->load(mem, size, flags);
if(ibuf) {
if(flags & IB_premul) {
IMB_premultiply_alpha(ibuf);
ibuf->flags |= IB_premul;
}
return ibuf;
}
}
}
fprintf(stderr, "Unknown fileformat\n");
return NULL;
}
ImBuf *IMB_loadifffile(int file, int flags)
{
ImBuf *ibuf;
unsigned char *mem;
size_t size;
if(file == -1) return NULL;
size= BLI_file_descriptor_size(file);
mem= mmap(NULL, size, PROT_READ, MAP_SHARED, file, 0);
if(mem==(unsigned char*)-1) {
fprintf(stderr, "Couldn't get mapping\n");
return NULL;
}
ibuf= IMB_ibImageFromMemory(mem, size, flags);
if(munmap(mem, size))
fprintf(stderr, "Couldn't unmap file.\n");
return ibuf;
}
static void imb_cache_filename(char *filename, const char *name, int flags)
{
/* read .tx instead if it exists and is not older */
if(flags & IB_tilecache) {
BLI_strncpy(filename, name, IB_FILENAME_SIZE);
if(!BLI_replace_extension(filename, IB_FILENAME_SIZE, ".tx"))
return;
if(BLI_file_older(name, filename))
return;
}
BLI_strncpy(filename, name, IB_FILENAME_SIZE);
}
ImBuf *IMB_loadiffname(const char *name, int flags)
{
ImBuf *ibuf;
int file, a;
char filename[IB_FILENAME_SIZE];
imb_cache_filename(filename, name, flags);
ibuf= imb_ibImageFromFile(name, flags);
if(!ibuf) {
file = open(filename, O_BINARY|O_RDONLY);
if(file < 0) return NULL;
ibuf= IMB_loadifffile(file, flags);
close(file);
}
if(ibuf) {
BLI_strncpy(ibuf->name, name, sizeof(ibuf->name));
BLI_strncpy(ibuf->cachename, filename, sizeof(ibuf->cachename));
for(a=1; a<ibuf->miptot; a++)
BLI_strncpy(ibuf->mipmap[a-1]->cachename, filename, sizeof(ibuf->cachename));
if(flags & IB_fields) IMB_de_interlace(ibuf);
}
return ibuf;
}
ImBuf *IMB_testiffname(char *name, int flags)
{
ImBuf *ibuf;
int file;
char filename[IB_FILENAME_SIZE];
imb_cache_filename(filename, name, flags);
file = open(filename,O_BINARY|O_RDONLY);
if(file < 0) return NULL;
ibuf=IMB_loadifffile(file, flags|IB_test|IB_multilayer);
if(ibuf) {
BLI_strncpy(ibuf->name, name, sizeof(ibuf->name));
BLI_strncpy(ibuf->cachename, filename, sizeof(ibuf->cachename));
}
close(file);
return ibuf;
}
static void imb_loadtilefile(ImBuf *ibuf, int file, int tx, int ty, unsigned int *rect)
{
ImFileType *type;
unsigned char *mem;
size_t size;
if(file == -1) return;
size= BLI_file_descriptor_size(file);
mem= mmap(NULL, size, PROT_READ, MAP_SHARED, file, 0);
if(mem==(unsigned char*)-1) {
fprintf(stderr, "Couldn't get memory mapping for %s\n", ibuf->cachename);
return;
}
for(type=IMB_FILE_TYPES; type->is_a; type++)
if(type->load_tile && type->ftype && type->ftype(type, ibuf))
type->load_tile(ibuf, mem, size, tx, ty, rect);
if(munmap(mem, size))
fprintf(stderr, "Couldn't unmap memory for %s.\n", ibuf->cachename);
}
void imb_loadtile(ImBuf *ibuf, int tx, int ty, unsigned int *rect)
{
int file;
file = open(ibuf->cachename, O_BINARY|O_RDONLY);
if(file < 0) return;
imb_loadtilefile(ibuf, file, tx, ty, rect);
close(file);
}
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