1 /*! ========================================================================
4 ** $Id: mptr_bmp.cpp,v 1.1.1.1 2005/01/04 01:23:10 darco Exp $
6 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
8 ** This package is free software; you can redistribute it and/or
9 ** modify it under the terms of the GNU General Public License as
10 ** published by the Free Software Foundation; either version 2 of
11 ** the License, or (at your option) any later version.
13 ** This package is distributed in the hope that it will be useful,
14 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 ** General Public License for more details.
18 ** === N O T E S ===========================================================
20 ** ========================================================================= */
22 /* === H E A D E R S ======================================================= */
24 #define SYNFIG_NO_ANGLE
34 #include <synfig/general.h>
35 #include <synfig/surface.h>
41 /* === U S I N G =========================================================== */
43 using namespace synfig;
47 /* === G L O B A L S ======================================================= */
49 SYNFIG_IMPORTER_INIT(bmp_mptr);
50 SYNFIG_IMPORTER_SET_NAME(bmp_mptr,"bmp_mptr");
51 SYNFIG_IMPORTER_SET_EXT(bmp_mptr,"bmp");
52 SYNFIG_IMPORTER_SET_VERSION(bmp_mptr,"0.1");
53 SYNFIG_IMPORTER_SET_CVS_ID(bmp_mptr,"$Id: mptr_bmp.cpp,v 1.1.1.1 2005/01/04 01:23:10 darco Exp $");
55 /* === M E T H O D S ======================================================= */
57 struct BITMAPFILEHEADER
59 unsigned char bfType[2];
61 unsigned short bfReserved1;
62 unsigned short bfReserved2;
63 unsigned long bfOffsetBits;
66 struct BITMAPINFOHEADER
71 unsigned short biPlanes;
72 unsigned short biBitCount;
73 unsigned long biCompression;
74 unsigned long biSizeImage;
77 unsigned long biClrUsed;
78 unsigned long biClrImportant;
81 #ifdef WORDS_BIGENDIAN
82 inline long little_endian(const long &x)
85 char *big_e=(char *)&ret;
86 char *lit_e=(char *)&x;
93 inline short little_endian_short(const short &x)
96 char *big_e=(char *)&ret;
97 char *lit_e=(char *)&x;
103 #define little_endian(x) (x)
104 #define little_endian_short(x) (x)
112 bmp_mptr::bmp_mptr(const char *file)
117 bmp_mptr::~bmp_mptr()
122 bmp_mptr::get_frame(synfig::Surface &surface,Time, synfig::ProgressCallback *cb)
124 FILE *file=fopen(filename.c_str(),"rb");
127 if(cb)cb->error("bmp_mptr::GetFrame(): "+strprintf(_("Unable to open %s"),filename.c_str()));
128 else synfig::error("bmp_mptr::GetFrame(): "+strprintf(_("Unable to open %s"),filename.c_str()));
132 BITMAPFILEHEADER fileheader;
133 BITMAPINFOHEADER infoheader;
134 char b_char=fgetc(file);
135 char m_char=fgetc(file);
137 if(b_char!='B' || m_char!='M')
139 if(cb)cb->error("bmp_mptr::GetFrame(): "+strprintf(_("%s is not in BMP format"),filename.c_str()));
140 else synfig::error("bmp_mptr::GetFrame(): "+strprintf(_("%s is not in BMP format"),filename.c_str()));
144 if(fread(&fileheader.bfSize, 1, sizeof(BITMAPFILEHEADER)-4, file)!=sizeof(BITMAPFILEHEADER)-4)
146 String str("bmp_mptr::get_frame(): "+strprintf(_("Failure while reading BITMAPFILEHEADER from %s"),filename.c_str()));
147 if(cb)cb->error(str);
148 else synfig::error(str);
152 if(fread(&infoheader, 1, sizeof(BITMAPINFOHEADER), file)!=sizeof(BITMAPINFOHEADER))
154 String str("bmp_mptr::get_frame(): "+strprintf(_("Failure while reading BITMAPINFOHEADER from %s"),filename.c_str()));
155 if(cb)cb->error(str);
156 else synfig::error(str);
160 int offset=little_endian(fileheader.bfOffsetBits);
162 if(offset!=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)-2)
164 String str("bmp_mptr::get_frame(): "+strprintf(_("Bad BITMAPFILEHEADER in %s. (bfOffsetBits=%d, should be %d)"),filename.c_str(),offset,sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)-2));
165 if(cb)cb->error(str);
166 else synfig::error(str);
170 if(little_endian(infoheader.biSize)!=little_endian(40))
172 String str("bmp_mptr::get_frame(): "+strprintf(_("Bad BITMAPINFOHEADER in %s. (biSize=%d, should be 40)"),filename.c_str(),little_endian(infoheader.biSize)));
173 if(cb)cb->error(str);
174 else synfig::error(str);
180 w=little_endian(infoheader.biWidth);
181 h=little_endian(infoheader.biHeight);
182 bit_count=little_endian_short(infoheader.biBitCount);
184 synfig::warning("w:%d\n",w);
185 synfig::warning("h:%d\n",h);
186 synfig::warning("bit_count:%d\n",bit_count);
188 if(little_endian(infoheader.biCompression))
190 if(cb)cb->error("bmp_mptr::GetFrame(): "+string(_("Reading compressed bitmaps is not supported")));
191 else synfig::error("bmp_mptr::GetFrame(): "+string(_("Reading compressed bitmaps is not supported")));
195 if(bit_count!=24 && bit_count!=32)
197 if(cb)cb->error("bmp_mptr::GetFrame(): "+strprintf(_("Unsupported bit depth (bit_count=%d, should be 24 or 32)"),bit_count));
198 else synfig::error("bmp_mptr::GetFrame(): "+strprintf(_("Unsupported bit depth (bit_count=%d, should be 24 or 32)"),bit_count));
205 for(y=0;y<surface.get_h();y++)
206 for(x=0;x<surface.get_w();x++)
208 // float b=(float)(unsigned char)fgetc(file)*(1.0/255.0);
209 // float g=(float)(unsigned char)fgetc(file)*(1.0/255.0);
210 // float r=(float)(unsigned char)fgetc(file)*(1.0/255.0);
211 float b=gamma().b_U8_to_F32((unsigned char)fgetc(file));
212 float g=gamma().g_U8_to_F32((unsigned char)fgetc(file));
213 float r=gamma().r_U8_to_F32((unsigned char)fgetc(file));
215 surface[h-y-1][x]=Color(