cairo_png_mptr::cairo_png_mptr(const synfig::FileSystem::Identifier &identifier):
CairoImporter(identifier)
{
FileSystem::ReadStreamHandle stream = identifier.get_read_stream();
csurface_=cairo_image_surface_create_from_png_stream(read_callback, stream.get());
stream.reset();
if(cairo_surface_status(csurface_))
{
throw strprintf("Unable to physically open %s",identifier.filename.c_str());
cairo_surface_destroy(csurface_);
csurface_=NULL;
return;
}
CairoSurface cairo_s;
cairo_s.set_cairo_surface(csurface_);
if(!cairo_s.map_cairo_image())
return;
int w=cairo_s.get_w();
int h=cairo_s.get_h();
for(int y=0; y<h; y++)
for(int x=0; x<w; x++)
{
CairoColor c=cairo_s[y][x];
float a=c.get_alpha();
unsigned char r=(unsigned char)(a*gamma().r_F32_to_F32(c.get_r()/a));
unsigned char g=(unsigned char)(a*gamma().g_F32_to_F32(c.get_g()/a));
unsigned char b=(unsigned char)(a*gamma().b_F32_to_F32(c.get_b()/a));
c.set_r(r);
c.set_g(g);
c.set_b(b);
cairo_s[y][x]=c;
}
cairo_s.unmap_cairo_image();
}
bool
bmp_mptr::get_frame(synfig::Surface &surface, const synfig::RendDesc &/*renddesc*/, Time /*time*/, synfig::ProgressCallback *cb)
{
FileSystem::ReadStreamHandle 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 %d)"),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 %d)"),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;
}
int x;
int y;
surface.set_wh(w,h);
for(y=0;y<surface.get_h();y++)
for(x=0;x<surface.get_w();x++)
{
// float b=(float)(unsigned char)stream->getc()*(1.0/255.0);
// float g=(float)(unsigned char)stream->getc()*(1.0/255.0);
// float r=(float)(unsigned char)stream->getc()*(1.0/255.0);
float b=gamma().b_U8_to_F32((unsigned char)stream->get());
float g=gamma().g_U8_to_F32((unsigned char)stream->get());
float r=gamma().r_U8_to_F32((unsigned char)stream->get());
surface[h-y-1][x]=Color(
r,
g,
b,
1.0
);
if(bit_count==32)
stream->get();
}
return true;
}