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Fixed crash when reading b/w tif images (fixes #5579)

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Hajo Nils Krabbenhöft 2015-09-16 22:04:42 +02:00 committed by Maksim Shabunin
parent 6e2a68fdf3
commit a8e550f5bf
1 changed files with 6 additions and 1 deletions
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7
modules/imgcodecs/src/grfmt_tiff.cpp
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@ -247,7 +247,12 @@ bool TiffDecoder::readData( Mat& img )
(!is_tiled && tile_height0 == std::numeric_limits<uint32>::max()) )
tile_height0 = m_height;
const size_t buffer_size = bpp * ncn * tile_height0 * tile_width0;
if(dst_bpp == 8) {
// we will use TIFFReadRGBA* functions, so allocate temporary buffer for 32bit RGBA
bpp = 8;
ncn = 4;
}
const size_t buffer_size = (bpp/bitsPerByte) * ncn * tile_height0 * tile_width0;
AutoBuffer<uchar> _buffer( buffer_size );
uchar* buffer = _buffer;
ushort* buffer16 = (ushort*)buffer;