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[libpng16] Fixed transparent pixel and 16-bit rgb tests in pngstest and removed

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a spurious check in pngwrite.c
This commit is contained in:
John Bowler
2012-02-29 10:49:28 -06:00
committed by Glenn Randers-Pehrson
parent 0a92b23c4b
commit 1c25b9b06b
4 changed files with 27 additions and 18 deletions
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8
pngwrite.c
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@@ -1592,7 +1592,7 @@ png_write_image_16bit(png_voidp argument)
display->first_row);
png_uint_16p output_row = png_voidcast(png_uint_16p, display->local_row);
png_uint_16p row_end;
int channels = (image->format & PNG_FORMAT_FLAG_COLOR) ? 3 : 1;
const int channels = (image->format & PNG_FORMAT_FLAG_COLOR) ? 3 : 1;
int aindex = 0;
png_uint_32 y = image->height;
@@ -1625,7 +1625,7 @@ png_write_image_16bit(png_voidp argument)
while (out_ptr < row_end)
{
png_uint_16 alpha = in_ptr[aindex];
const png_uint_16 alpha = in_ptr[aindex];
png_uint_32 reciprocal = 0;
int c;
@@ -1747,7 +1747,7 @@ png_write_image_8bit(png_voidp argument)
display->first_row);
png_bytep output_row = png_voidcast(png_bytep, display->local_row);
png_uint_32 y = image->height;
int channels = (image->format & PNG_FORMAT_FLAG_COLOR) ? 3 : 1;
const int channels = (image->format & PNG_FORMAT_FLAG_COLOR) ? 3 : 1;
if (image->format & PNG_FORMAT_FLAG_ALPHA)
{
@@ -1772,7 +1772,7 @@ png_write_image_8bit(png_voidp argument)
png_const_uint_16p in_ptr = input_row;
png_bytep out_ptr = output_row;
if (aindex != 0) while (out_ptr < row_end) /* Alpha channel case */
while (out_ptr < row_end)
{
png_uint_16 alpha = in_ptr[aindex];
png_byte alphabyte = (png_byte)PNG_DIV257(alpha);