[libcamera-devel] [PATCH] qcam: dng: Make TIFFTAG_CFAPATTERN variable count

[Jean-Michel Hautbois]

Since libtiff version 20201219, the CFAPATTERN tag is using a variable
count and not the fixed 4 values size.
For reference, the commit introducing this is:

	commit 2eb5a954cb7b7ad61559da00743c4b0e2fce34d0
	Author: Sam Hasinoff <hasinoff at google.com>
	Date:   Sun Mar 8 21:23:16 2020 +0100
	Make TIFFTAG_CFAPATTERN variable count

Add a version check in the DNGWriter::write function when this tag is
written as this breaks the raw capture in qcam.

Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois at ideasonboard.com>
---
 src/qcam/dng_writer.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/qcam/dng_writer.cpp b/src/qcam/dng_writer.cpp
index 34c8df5a..bfb867c6 100644
--- a/src/qcam/dng_writer.cpp
+++ b/src/qcam/dng_writer.cpp
@@ -506,7 +506,10 @@ int DNGWriter::write(const char *filename, const Camera *camera,
 	TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
 	TIFFSetField(tif, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
 	TIFFSetField(tif, TIFFTAG_CFAREPEATPATTERNDIM, cfaRepeatPatternDim);
-	TIFFSetField(tif, TIFFTAG_CFAPATTERN, info->pattern);
+	if (TIFFLIB_VERSION < 20201219))
+		TIFFSetField(tif, TIFFTAG_CFAPATTERN, info->pattern);
+	else
+		TIFFSetField(tif, TIFFTAG_CFAPATTERN, 4, info->pattern);
 	TIFFSetField(tif, TIFFTAG_CFAPLANECOLOR, 3, cfaPlaneColor);
 	TIFFSetField(tif, TIFFTAG_CFALAYOUT, 1);
 
-- 
2.34.1