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added 16-bit tiff support, enabled LZW codec in tiff (tickets #588, #590)

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This commit is contained in:
Vadim Pisarevsky
2010-11-21 21:50:45 +00:00
parent 2c03c14f7b
commit 3163cfb845
5 changed files with 149 additions and 35 deletions
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123
modules/highgui/src/grfmt_tiff.cpp
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@@ -122,15 +122,19 @@ bool TiffDecoder::readHeader()
if( TIFFRGBAImageOK( tif, errmsg ) &&
TIFFGetField( tif, TIFFTAG_IMAGEWIDTH, &width ) &&
TIFFGetField( tif, TIFFTAG_IMAGELENGTH, &height ) &&
TIFFGetField( tif, TIFFTAG_PHOTOMETRIC, &photometric ) &&
(!TIFFGetField( tif, TIFFTAG_COMPRESSION, &compression ) ||
(compression != COMPRESSION_LZW &&
compression != COMPRESSION_OJPEG)))
TIFFGetField( tif, TIFFTAG_PHOTOMETRIC, &photometric ))
{
int bpp=8, ncn = photometric > 1 ? 3 : 1;
TIFFGetField( tif, TIFFTAG_BITSPERSAMPLE, &bpp );
TIFFGetField( tif, TIFFTAG_SAMPLESPERPIXEL, &ncn );
m_width = width;
m_height = height;
m_type = photometric > 1 ? CV_8UC3 : CV_8UC1;
if( bpp > 8 &&
((photometric != 2 && photometric != 1) ||
(ncn != 1 && ncn != 3 && ncn != 4)))
bpp = 8;
m_type = CV_MAKETYPE(bpp > 8 ? CV_16U : CV_8U, photometric > 1 ? 3 : 1);
result = true;
}
}
@@ -148,6 +152,9 @@ bool TiffDecoder::readData( Mat& img )
bool color = img.channels() > 1;
uchar* data = img.data;
int step = (int)img.step;
if( img.depth() != CV_8U && img.depth() != CV_16U )
return false;
if( m_tif && m_width && m_height )
{
@@ -155,6 +162,12 @@ bool TiffDecoder::readData( Mat& img )
int tile_width0 = m_width, tile_height0 = 0;
int x, y, i;
int is_tiled = TIFFIsTiled(tif);
int photometric;
TIFFGetField( tif, TIFFTAG_PHOTOMETRIC, &photometric );
int bpp = 8, ncn = photometric > 1 ? 3 : 1;
TIFFGetField( tif, TIFFTAG_BITSPERSAMPLE, &bpp );
TIFFGetField( tif, TIFFTAG_SAMPLESPERPIXEL, &ncn );
int dst_bpp = img.depth() == CV_8U ? 8 : 16;
if( (!is_tiled &&
TIFFGetField( tif, TIFFTAG_ROWSPERSTRIP, &tile_height0 )) ||
@@ -168,8 +181,10 @@ bool TiffDecoder::readData( Mat& img )
if( tile_height0 <= 0 )
tile_height0 = m_height;
AutoBuffer<uchar> _buffer(tile_height0*tile_width0*4);
AutoBuffer<uchar> _buffer(tile_height0*tile_width0*8);
uchar* buffer = _buffer;
ushort* buffer16 = (ushort*)buffer;
int tileidx = 0;
for( y = 0; y < m_height; y += tile_height0, data += step*tile_height0 )
{
@@ -178,33 +193,89 @@ bool TiffDecoder::readData( Mat& img )
if( y + tile_height > m_height )
tile_height = m_height - y;
for( x = 0; x < m_width; x += tile_width0 )
for( x = 0; x < m_width; x += tile_width0, tileidx++ )
{
int tile_width = tile_width0, ok;
if( x + tile_width > m_width )
tile_width = m_width - x;
if( !is_tiled )
ok = TIFFReadRGBAStrip( tif, y, (uint32*)buffer );
else
ok = TIFFReadRGBATile( tif, x, y, (uint32*)buffer );
if( !ok )
if( dst_bpp == 8 )
{
close();
return false;
}
for( i = 0; i < tile_height; i++ )
if( color )
icvCvt_BGRA2BGR_8u_C4C3R( buffer + i*tile_width*4, 0,
data + x*3 + step*(tile_height - i - 1), 0,
cvSize(tile_width,1), 2 );
if( !is_tiled )
ok = TIFFReadRGBAStrip( tif, y, (uint32*)buffer );
else
icvCvt_BGRA2Gray_8u_C4C1R( buffer + i*tile_width*4, 0,
data + x + step*(tile_height - i - 1), 0,
cvSize(tile_width,1), 2 );
ok = TIFFReadRGBATile( tif, x, y, (uint32*)buffer );
if( !ok )
{
close();
return false;
}
for( i = 0; i < tile_height; i++ )
if( color )
icvCvt_BGRA2BGR_8u_C4C3R( buffer + i*tile_width*4, 0,
data + x*3 + step*(tile_height - i - 1), 0,
cvSize(tile_width,1), 2 );
else
icvCvt_BGRA2Gray_8u_C4C1R( buffer + i*tile_width*4, 0,
data + x + step*(tile_height - i - 1), 0,
cvSize(tile_width,1), 2 );
}
else
{
if( !is_tiled )
ok = TIFFReadEncodedStrip( tif, tileidx, (uint32*)buffer, -1 );
else
ok = TIFFReadEncodedTile( tif, tileidx, (uint32*)buffer, -1 );
if( !ok )
{
close();
return false;
}
for( i = 0; i < tile_height; i++ )
{
if( color )
{
if( ncn == 1 )
{
icvCvt_Gray2BGR_16u_C1C3R(buffer16 + i*tile_width*ncn, 0,
(ushort*)(data + step*i) + x*3, 0,
cvSize(tile_width,1) );
}
else if( ncn == 3 )
{
icvCvt_RGB2BGR_16u_C3R(buffer16 + i*tile_width*ncn, 0,
(ushort*)(data + step*i) + x*3, 0,
cvSize(tile_width,1) );
}
else
{
icvCvt_BGRA2BGR_16u_C4C3R(buffer16 + i*tile_width*ncn, 0,
(ushort*)(data + step*i) + x*3, 0,
cvSize(tile_width,1), 2 );
}
}
else
{
if( ncn == 1 )
{
memcpy((ushort*)(data + step*i)+x,
buffer16 + i*tile_width*ncn,
tile_width*sizeof(buffer16[0]));
}
else
{
icvCvt_BGRA2Gray_16u_CnC1R(buffer16 + i*tile_width*ncn, 0,
(ushort*)(data + step*i) + x, 0,
cvSize(tile_width,1), ncn, 2 );
}
}
}
}
}
}