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Merge pull request #18 from czarkoff/png

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Fix png image handling
This commit is contained in:
Daniel Beer 2016-08-16 09:36:49 +12:00 committed by GitHub
commit 5b26248009
1 changed files with 4 additions and 3 deletions
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7
tests/dbgutil.c
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@ -192,6 +192,7 @@ out:
int load_png(struct quirc *q, const char *filename)
{
int width, height, rowbytes, interlace_type, number_passes = 1;
png_uint_32 trns;
png_byte color_type, bit_depth;
png_structp png_ptr = NULL;
png_infop info_ptr = NULL;
@ -229,13 +230,13 @@ int load_png(struct quirc *q, const char *filename)
if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8)
png_set_expand_gray_1_2_4_to_8(png_ptr);
if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
if ((trns = png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)))
png_set_tRNS_to_alpha(png_ptr);
if (bit_depth == 16)
png_set_strip_16(png_ptr);
png_set_scale_16(png_ptr);
if (color_type & PNG_COLOR_MASK_ALPHA)
if ((trns) || color_type & PNG_COLOR_MASK_ALPHA)
png_set_strip_alpha(png_ptr);
if (color_type == PNG_COLOR_TYPE_PALETTE)