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[libpng17] Imported from libpng-1.7.0beta17.tar

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Glenn Randers-Pehrson
2013-08-21 19:01:20 -05:00
parent 8e23262b2b
commit 003590c361
17 changed files with 56 additions and 51 deletions
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39
pngrtran.c
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@@ -1781,31 +1781,34 @@ png_init_read_transformations(png_structrp png_ptr)
* the number of significant bits is 0 then no shift is done (this is an
* error condition which is silently ignored.)
*/
if (shift > 0 && shift < 8) for (i=0; i<istop; ++i)
{
int component = png_ptr->palette[i].red;
if (shift > 0 && shift < 8)
for (i=0; i<istop; ++i)
{
int component = png_ptr->palette[i].red;
component >>= shift;
png_ptr->palette[i].red = (png_byte)component;
}
component >>= shift;
png_ptr->palette[i].red = (png_byte)component;
}
shift = 8 - png_ptr->sig_bit.green;
if (shift > 0 && shift < 8) for (i=0; i<istop; ++i)
{
int component = png_ptr->palette[i].green;
if (shift > 0 && shift < 8)
for (i=0; i<istop; ++i)
{
int component = png_ptr->palette[i].green;
component >>= shift;
png_ptr->palette[i].green = (png_byte)component;
}
component >>= shift;
png_ptr->palette[i].green = (png_byte)component;
}
shift = 8 - png_ptr->sig_bit.blue;
if (shift > 0 && shift < 8) for (i=0; i<istop; ++i)
{
int component = png_ptr->palette[i].blue;
if (shift > 0 && shift < 8)
for (i=0; i<istop; ++i)
{
int component = png_ptr->palette[i].blue;
component >>= shift;
png_ptr->palette[i].blue = (png_byte)component;
}
component >>= shift;
png_ptr->palette[i].blue = (png_byte)component;
}
}
#endif /* PNG_READ_SHIFT_SUPPORTED */
}