Don't allocate lots of memory when reading TIFFs with infinite rows per strip.

Some TIFF images consist of only one strip. The magic value 2**32-1 for the
"rows per strip" tag reflects that fact, effectively meaning "infinite".

Conflicts:
	modules/highgui/src/grfmt_tiff.cpp
	modules/highgui/test/test_grfmt.cpp

fix whitespace

fix compile error

modules/imgcodecs/src/grfmt_tiff.cpp

@@ -48,6 +48,7 @@
 #include "precomp.hpp"
 #include "grfmt_tiff.hpp"
 #include <opencv2/imgproc.hpp>
+#include <limits>
 
 namespace cv
 {
@@ -242,7 +243,8 @@ bool  TiffDecoder::readData( Mat& img )
             if( tile_width0 <= 0 )
                 tile_width0 = m_width;
 
-            if( tile_height0 <= 0 )
+            if( tile_height0 <= 0 ||
+               (!is_tiled && tile_height0 == std::numeric_limits<uint32>::max()) )
                 tile_height0 = m_height;
 
             AutoBuffer<uchar> _buffer( size_t(8) * tile_height0*tile_width0);

modules/imgcodecs/test/test_grfmt.cpp

@@ -675,6 +675,36 @@ TEST(Imgcodecs_Tiff, decode_tile_remainder)
     CV_GrfmtReadTifTiledWithNotFullTiles test; test.safe_run();
 }
 
+TEST(Imgcodecs_Tiff, decode_infinite_rowsperstrip)
+{
+    const uchar sample_data[142] = {
+        0x49, 0x49, 0x2a, 0x00, 0x10, 0x00, 0x00, 0x00, 0x56, 0x54,
+        0x56, 0x5a, 0x59, 0x55, 0x5a, 0x00, 0x0a, 0x00, 0x00, 0x01,
+        0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+        0x01, 0x01, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x07, 0x00,
+        0x00, 0x00, 0x02, 0x01, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00,
+        0x08, 0x00, 0x00, 0x00, 0x03, 0x01, 0x03, 0x00, 0x01, 0x00,
+        0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x06, 0x01, 0x03, 0x00,
+        0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x11, 0x01,
+        0x04, 0x00, 0x01, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
+        0x15, 0x01, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00,
+        0x00, 0x00, 0x16, 0x01, 0x04, 0x00, 0x01, 0x00, 0x00, 0x00,
+        0xff, 0xff, 0xff, 0xff, 0x17, 0x01, 0x04, 0x00, 0x01, 0x00,
+        0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x1c, 0x01, 0x03, 0x00,
+        0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00
+    };
+
+    const string filename = cv::tempfile(".tiff");
+    std::ofstream outfile(filename.c_str(), std::ofstream::binary);
+    outfile.write(reinterpret_cast<const char *>(sample_data), sizeof sample_data);
+    outfile.close();
+
+    EXPECT_NO_THROW(cv::imread(filename, IMREAD_UNCHANGED));
+
+    remove(filename.c_str());
+}
+
 class CV_GrfmtReadTifMultiPage : public cvtest::BaseTest
 {
 private: