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-rw-r--r--tools/grab.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/tools/grab.c b/tools/grab.c
index 0b9601f..41f5a6e 100644
--- a/tools/grab.c
+++ b/tools/grab.c
@@ -68,9 +68,10 @@ get_camera_list (void)
static guint
get_bytes_per_pixel (guint bits_per_pixel)
{
- return bits_per_pixel == 8 ? 1 : 2;
+ return bits_per_pixel > 8 ? 2 : 1;
}
+
#ifdef HAVE_LIBTIFF
static void
write_tiff (RingBuffer *buffer,
@@ -82,6 +83,7 @@ write_tiff (RingBuffer *buffer,
TIFF *tif;
guint32 rows_per_strip;
guint n_frames;
+ guint bits_per_sample;
gsize bytes_per_pixel;
if (opts->filename)
@@ -92,6 +94,7 @@ write_tiff (RingBuffer *buffer,
n_frames = ring_buffer_get_num_blocks (buffer);
rows_per_strip = TIFFDefaultStripSize (tif, (guint32) - 1);
bytes_per_pixel = get_bytes_per_pixel (bits_per_pixel);
+ bits_per_sample = bits_per_pixel > 8 ? 16 : 8;
/* Write multi page TIFF file */
TIFFSetField (tif, TIFFTAG_SUBFILETYPE, FILETYPE_PAGE);
@@ -104,7 +107,7 @@ write_tiff (RingBuffer *buffer,
TIFFSetField (tif, TIFFTAG_IMAGEWIDTH, width);
TIFFSetField (tif, TIFFTAG_IMAGELENGTH, height);
- TIFFSetField (tif, TIFFTAG_BITSPERSAMPLE, bits_per_pixel);
+ TIFFSetField (tif, TIFFTAG_BITSPERSAMPLE, bits_per_sample);
TIFFSetField (tif, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
TIFFSetField (tif, TIFFTAG_SAMPLESPERPIXEL, 1);
TIFFSetField (tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);