generic-library/opencv
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

fix tiled read for reading tiles into partial blocks in image

Browse Source
This commit is contained in:
Matti Picus 2014-01-24 13:03:47 +02:00
parent 078d49609e
commit 64fd54ffb4
1 changed files with 16 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
modules/highgui/src/grfmt_tiff.cpp
View File

@ -246,13 +246,15 @@ bool TiffDecoder::readData( Mat& img )
return false;
}
uchar * bstart = buffer + (tile_height0 - tile_height) * tile_width0 * 4;
for( i = 0; i < tile_height; i++ )
if( color )
icvCvt_BGRA2BGR_8u_C4C3R( buffer + i*tile_width*4, 0,
icvCvt_BGRA2BGR_8u_C4C3R( bstart + i*tile_width0*4, 0,
data + x*3 + img.step*(tile_height - i - 1), 0,
cvSize(tile_width,1), 2 );
else
icvCvt_BGRA2Gray_8u_C4C1R( buffer + i*tile_width*4, 0,
icvCvt_BGRA2Gray_8u_C4C1R( bstart + i*tile_width0*4, 0,
data + x + img.step*(tile_height - i - 1), 0,
cvSize(tile_width,1), 2 );
break;
@ -271,25 +273,27 @@ bool TiffDecoder::readData( Mat& img )
return false;
}
uint16 * bstart = buffer16 + (tile_height0 - tile_height) * tile_width0 * ncn;
for( i = 0; i < tile_height; i++ )
{
if( color )
{
if( ncn == 1 )
{
icvCvt_Gray2BGR_16u_C1C3R(buffer16 + i*tile_width*ncn, 0,
icvCvt_Gray2BGR_16u_C1C3R(bstart + i*tile_width0*ncn, 0,
(ushort*)(data + img.step*i) + x*3, 0,
cvSize(tile_width,1) );
}
else if( ncn == 3 )
{
icvCvt_RGB2BGR_16u_C3R(buffer16 + i*tile_width*ncn, 0,
icvCvt_RGB2BGR_16u_C3R(bstart + i*tile_width0*ncn, 0,
(ushort*)(data + img.step*i) + x*3, 0,
cvSize(tile_width,1) );
}
else
{
icvCvt_BGRA2BGR_16u_C4C3R(buffer16 + i*tile_width*ncn, 0,
icvCvt_BGRA2BGR_16u_C4C3R(bstart + i*tile_width0*ncn, 0,
(ushort*)(data + img.step*i) + x*3, 0,
cvSize(tile_width,1), 2 );
}
@ -299,12 +303,12 @@ bool TiffDecoder::readData( Mat& img )
if( ncn == 1 )
{
memcpy((ushort*)(data + img.step*i)+x,
buffer16 + i*tile_width*ncn,
bstart + i*tile_width0*ncn,
tile_width*sizeof(buffer16[0]));
}
else
{
icvCvt_BGRA2Gray_16u_CnC1R(buffer16 + i*tile_width*ncn, 0,
icvCvt_BGRA2Gray_16u_CnC1R(bstart + i*tile_width0*ncn, 0,
(ushort*)(data + img.step*i) + x, 0,
cvSize(tile_width,1), ncn, 2 );
}
@ -327,18 +331,21 @@ bool TiffDecoder::readData( Mat& img )
return false;
}
float * fstart = buffer32 + (tile_height0 - tile_height) * tile_width0 * sizeof(buffer32[0]);
double * dstart = buffer64 + (tile_height0 - tile_height) * tile_width0 * sizeof(buffer64[0]);
for( i = 0; i < tile_height; i++ )
{
if(dst_bpp == 32)
{
memcpy((float*)(data + img.step*i)+x,
buffer32 + i*tile_width*ncn,
fstart + i*tile_width0*ncn,
tile_width*sizeof(buffer32[0]));
}
else
{
memcpy((double*)(data + img.step*i)+x,
buffer64 + i*tile_width*ncn,
dstart + i*tile_width0*ncn,
tile_width*sizeof(buffer64[0]));
}
}