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[libpng16] Implemented 'restrict' for png_info and png_struct.

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Added new "png_structrp" typedef. Because of the
way libpng works both png_info and png_struct are always accessed via a
single pointer.  This means adding C99 'restrict' to the pointer gives
the compiler some opportunity to optimize the code.  This change allows that.
This commit is contained in:
John Bowler
2011-12-24 09:12:00 -06:00
committed by Glenn Randers-Pehrson
parent d7c22fb7ec
commit 5d56786eff
21 changed files with 875 additions and 845 deletions
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6
pngrio.c
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@@ -1,7 +1,7 @@
/* pngrio.c - functions for data input
*
* Last changed in libpng 1.5.0 [January 6, 2011]
* Last changed in libpng 1.6.0 [(PENDING RELEASE)]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -29,7 +29,7 @@
* to read more then 64K on a 16 bit machine.
*/
void /* PRIVATE */
png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
png_read_data(png_structrp png_ptr, png_bytep data, png_size_t length)
{
png_debug1(4, "reading %d bytes", (int)length);
@@ -84,7 +84,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
* be used.
*/
void PNGAPI
png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
png_set_read_fn(png_structrp png_ptr, png_voidp io_ptr,
png_rw_ptr read_data_fn)
{
if (png_ptr == NULL)