/* === S Y N F I G ========================================================= */
/*! \file mptr_bmp.cpp
** \brief bmp Target Module
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**
** This package 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 package 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.
** \endlegal
**
** === N O T E S ===========================================================
**
** ========================================================================= */
/* === H E A D E R S ======================================================= */
#ifdef USING_PCH
# include "pch.h"
#else
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "mptr_bmp.h"
#include <synfig/general.h>
#include <synfig/localization.h>
#include <synfig/surface.h>
#include <algorithm>
#include <functional>
#endif
/* === U S I N G =========================================================== */
using namespace synfig;
using namespace std;
using namespace etl;
/* === G L O B A L S ======================================================= */
SYNFIG_IMPORTER_INIT(bmp_mptr);
SYNFIG_IMPORTER_SET_NAME(bmp_mptr,"bmp");
SYNFIG_IMPORTER_SET_EXT(bmp_mptr,"bmp");
SYNFIG_IMPORTER_SET_VERSION(bmp_mptr,"0.1");
SYNFIG_IMPORTER_SET_CVS_ID(bmp_mptr,"$Id$");
SYNFIG_IMPORTER_SET_SUPPORTS_FILE_SYSTEM_WRAPPER(bmp_mptr, true);
/* === M E T H O D S ======================================================= */
namespace synfig {
#pragma pack(push, 1)
namespace BITMAP
{
typedef unsigned char uint8_t;
typedef unsigned short int uint16_t;
typedef int int32_t;
typedef unsigned int uint32_t;
struct FILEHEADER
{
uint8_t bfType[2];
uint32_t bfSize;
uint16_t bfReserved1;
uint16_t bfReserved2;
uint32_t bfOffsetBits;
};
struct INFOHEADER
{
uint32_t biSize;
int32_t biWidth;
int32_t biHeight;
uint16_t biPlanes;
uint16_t biBitCount;
uint32_t biCompression;
uint32_t biSizeImage;
int32_t biXPelsPerMeter;
int32_t biYPelsPerMeter;
uint32_t biClrUsed;
uint32_t biClrImportant;
};
}
#pragma pack(pop)
}
#ifdef WORDS_BIGENDIAN
inline long little_endian(const long &x)
{
long ret;
char *big_e=(char *)&ret;
char *lit_e=(char *)&x;
big_e[0]=lit_e[3];
big_e[1]=lit_e[2];
big_e[2]=lit_e[1];
big_e[3]=lit_e[0];
return ret;
}
inline short little_endian_short(const short &x)
{
short ret;
char *big_e=(char *)&ret;
char *lit_e=(char *)&x;
big_e[0]=lit_e[1];
big_e[1]=lit_e[0];
return ret;
}
#else
#define little_endian(x) (x)
#define little_endian_short(x) (x)
#endif
bool
bmp_mptr::get_frame(synfig::Surface &surface, const synfig::RendDesc &/*renddesc*/, Time /*time*/, synfig::ProgressCallback *cb)
{
FileSystem::ReadStream::Handle stream = identifier.get_read_stream();
if(!stream)
{
if(cb)cb->error("bmp_mptr::GetFrame(): "+strprintf(_("Unable to open %s"),identifier.filename.c_str()));
else synfig::error("bmp_mptr::GetFrame(): "+strprintf(_("Unable to open %s"),identifier.filename.c_str()));
return false;
}
synfig::BITMAP::FILEHEADER fileheader;
synfig::BITMAP::INFOHEADER infoheader;
if (!stream->read_variable(fileheader.bfType)
|| fileheader.bfType[0] != 'B'
|| fileheader.bfType[1] != 'M')
{
if(cb)cb->error("bmp_mptr::GetFrame(): "+strprintf(_("%s is not in BMP format"),identifier.filename.c_str()));
else synfig::error("bmp_mptr::GetFrame(): "+strprintf(_("%s is not in BMP format"),identifier.filename.c_str()));
return false;
}
if(!stream->read_whole_block(&fileheader.bfSize, sizeof(synfig::BITMAP::FILEHEADER)-2))
{
String str("bmp_mptr::get_frame(): "+strprintf(_("Failure while reading BITMAP::FILEHEADER from %s"),identifier.filename.c_str()));
if(cb)cb->error(str);
else synfig::error(str);
return false;
}
if(!stream->read_whole_block(&infoheader, sizeof(synfig::BITMAP::INFOHEADER)))
{
String str("bmp_mptr::get_frame(): "+strprintf(_("Failure while reading BITMAP::INFOHEADER from %s"),identifier.filename.c_str()));
if(cb)cb->error(str);
else synfig::error(str);
return false;
}
int offset=little_endian(fileheader.bfOffsetBits);
if(offset!=sizeof(synfig::BITMAP::FILEHEADER)+sizeof(synfig::BITMAP::INFOHEADER))
{
String str("bmp_mptr::get_frame(): "+strprintf(_("Bad BITMAP::FILEHEADER in %s. (bfOffsetBits=%d, should be %zu)"),identifier.filename.c_str(),offset,sizeof(synfig::BITMAP::FILEHEADER)+sizeof(synfig::BITMAP::INFOHEADER)));
if(cb)cb->error(str);
else synfig::error(str);
return false;
}
if(little_endian(infoheader.biSize)!=sizeof(synfig::BITMAP::INFOHEADER))
{
String str("bmp_mptr::get_frame(): "+strprintf(_("Bad BITMAP::INFOHEADER in %s. (biSize=%d, should be %zu)"),identifier.filename.c_str(),little_endian(infoheader.biSize),sizeof(synfig::BITMAP::INFOHEADER)));
if(cb)cb->error(str);
else synfig::error(str);
return false;
}
int w,h,bit_count;
w=little_endian(infoheader.biWidth);
h=little_endian(infoheader.biHeight);
bit_count=little_endian_short(infoheader.biBitCount);
synfig::warning("w:%d\n",w);
synfig::warning("h:%d\n",h);
synfig::warning("bit_count:%d\n",bit_count);
if(little_endian(infoheader.biCompression))
{
if(cb)cb->error("bmp_mptr::GetFrame(): "+string(_("Reading compressed bitmaps is not supported")));
else synfig::error("bmp_mptr::GetFrame(): "+string(_("Reading compressed bitmaps is not supported")));
return false;
}
if(bit_count!=24 && bit_count!=32)
{
if(cb)cb->error("bmp_mptr::GetFrame(): "+strprintf(_("Unsupported bit depth (bit_count=%d, should be 24 or 32)"),bit_count));
else synfig::error("bmp_mptr::GetFrame(): "+strprintf(_("Unsupported bit depth (bit_count=%d, should be 24 or 32)"),bit_count));
return false;
}
surface.set_wh(w, h);
const ColorReal k = 1/255.0;
for(int y = 0; y < surface.get_h(); ++y)
for(int x = 0; x < surface.get_w(); ++x) {
ColorReal b = ((unsigned char)stream->get())*k;
ColorReal g = ((unsigned char)stream->get())*k;
ColorReal r = ((unsigned char)stream->get())*k;
surface[h-y-1][x] = Color(r, g, b);
if (bit_count == 32)
stream->get();
}
return true;
}