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Added minimal support for tiff encoder parameters and test for issue #2161

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This commit is contained in:
Andrey Kamaev 2013-01-29 20:13:09 +04:00
parent 3dbb98e454
commit b4d0dff4c5
2 changed files with 36 additions and 1 deletions
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18
modules/highgui/src/grfmt_tiff.cpp
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@ -402,7 +402,18 @@ void TiffEncoder::writeTag( WLByteStream& strm, TiffTag tag,
}
#ifdef HAVE_TIFF
bool TiffEncoder::writeLibTiff( const Mat& img, const vector<int>& /*params*/)
static void readParam(const vector<int>& params, int key, int& value)
{
for(size_t i = 0; i + 1 < params.size(); i += 2)
if(params[i] == key)
{
value = params[i+1];
break;
}
}
bool TiffEncoder::writeLibTiff( const Mat& img, const vector<int>& params)
{
int channels = img.channels();
int width = img.cols, height = img.rows;
@ -429,7 +440,9 @@ bool TiffEncoder::writeLibTiff( const Mat& img, const vector<int>& /*params*/)
const int bitsPerByte = 8;
size_t fileStep = (width * channels * bitsPerChannel) / bitsPerByte;
int rowsPerStrip = (int)((1 << 13)/fileStep);
readParam(params, TIFFTAG_ROWSPERSTRIP, rowsPerStrip);
if( rowsPerStrip < 1 )
rowsPerStrip = 1;
@ -450,6 +463,9 @@ bool TiffEncoder::writeLibTiff( const Mat& img, const vector<int>& /*params*/)
int compression = COMPRESSION_LZW;
int predictor = PREDICTOR_HORIZONTAL;
readParam(params, TIFFTAG_COMPRESSION, compression);
readParam(params, TIFFTAG_PREDICTOR, predictor);
int colorspace = channels > 1 ? PHOTOMETRIC_RGB : PHOTOMETRIC_MINISBLACK;
if ( !TIFFSetField(pTiffHandle, TIFFTAG_IMAGEWIDTH, width)

19
modules/highgui/test/test_grfmt.cpp
View File

@ -291,3 +291,22 @@ TEST(Highgui_Jpeg, encode_empty)
ASSERT_THROW(cv::imencode(".jpg", img, jpegImg), cv::Exception);
}
#endif
#ifdef HAVE_TIFF
#include "tiff.h"
TEST(Highgui_Tiff, decode_tile16384x16384)
{
// see issue #2161
cv::Mat big(16384, 16384, CV_8UC1, cv::Scalar::all(0));
string file = cv::tempfile(".tiff");
std::vector<int> params;
params.push_back(TIFFTAG_ROWSPERSTRIP);
params.push_back(big.rows);
cv::imwrite(file, big, params);
big.release();
EXPECT_NO_THROW(cv::imread(file));
remove(file.c_str());
}
#endif