[libpng16] Implemented 'restrict' for png_info and png_struct.
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.
diff --git a/pngset.c b/pngset.c
index 4ece8e4..e0c8196 100644
--- a/pngset.c
+++ b/pngset.c
@@ -22,7 +22,7 @@
#ifdef PNG_bKGD_SUPPORTED
void PNGAPI
-png_set_bKGD(png_structp png_ptr, png_infop info_ptr,
+png_set_bKGD(png_structrp png_ptr, png_inforp info_ptr,
png_const_color_16p background)
{
png_debug1(1, "in %s storage function", "bKGD");
@@ -37,7 +37,7 @@
#ifdef PNG_cHRM_SUPPORTED
void PNGFAPI
-png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
+png_set_cHRM_fixed(png_structrp png_ptr, png_inforp info_ptr,
png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x,
png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y,
png_fixed_point blue_x, png_fixed_point blue_y)
@@ -65,7 +65,7 @@
}
void PNGFAPI
-png_set_cHRM_XYZ_fixed(png_structp png_ptr, png_infop info_ptr,
+png_set_cHRM_XYZ_fixed(png_structrp png_ptr, png_inforp info_ptr,
png_fixed_point int_red_X, png_fixed_point int_red_Y,
png_fixed_point int_red_Z, png_fixed_point int_green_X,
png_fixed_point int_green_Y, png_fixed_point int_green_Z,
@@ -99,7 +99,7 @@
# ifdef PNG_FLOATING_POINT_SUPPORTED
void PNGAPI
-png_set_cHRM(png_structp png_ptr, png_infop info_ptr,
+png_set_cHRM(png_structrp png_ptr, png_inforp info_ptr,
double white_x, double white_y, double red_x, double red_y,
double green_x, double green_y, double blue_x, double blue_y)
{
@@ -115,7 +115,7 @@
}
void PNGAPI
-png_set_cHRM_XYZ(png_structp png_ptr, png_infop info_ptr, double red_X,
+png_set_cHRM_XYZ(png_structrp png_ptr, png_inforp info_ptr, double red_X,
double red_Y, double red_Z, double green_X, double green_Y, double green_Z,
double blue_X, double blue_Y, double blue_Z)
{
@@ -136,7 +136,7 @@
#ifdef PNG_gAMA_SUPPORTED
void PNGFAPI
-png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
+png_set_gAMA_fixed(png_structrp png_ptr, png_inforp info_ptr, png_fixed_point
file_gamma)
{
png_debug1(1, "in %s storage function", "gAMA");
@@ -164,7 +164,7 @@
# ifdef PNG_FLOATING_POINT_SUPPORTED
void PNGAPI
-png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma)
+png_set_gAMA(png_structrp png_ptr, png_inforp info_ptr, double file_gamma)
{
png_set_gAMA_fixed(png_ptr, info_ptr, png_fixed(png_ptr, file_gamma,
"png_set_gAMA"));
@@ -174,7 +174,7 @@
#ifdef PNG_hIST_SUPPORTED
void PNGAPI
-png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_const_uint_16p hist)
+png_set_hIST(png_structrp png_ptr, png_inforp info_ptr, png_const_uint_16p hist)
{
int i;
@@ -216,7 +216,7 @@
#endif
void PNGAPI
-png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
+png_set_IHDR(png_structrp png_ptr, png_inforp info_ptr,
png_uint_32 width, png_uint_32 height, int bit_depth,
int color_type, int interlace_type, int compression_type,
int filter_type)
@@ -266,7 +266,7 @@
#ifdef PNG_oFFs_SUPPORTED
void PNGAPI
-png_set_oFFs(png_structp png_ptr, png_infop info_ptr,
+png_set_oFFs(png_structrp png_ptr, png_inforp info_ptr,
png_int_32 offset_x, png_int_32 offset_y, int unit_type)
{
png_debug1(1, "in %s storage function", "oFFs");
@@ -283,7 +283,7 @@
#ifdef PNG_pCAL_SUPPORTED
void PNGAPI
-png_set_pCAL(png_structp png_ptr, png_infop info_ptr,
+png_set_pCAL(png_structrp png_ptr, png_inforp info_ptr,
png_const_charp purpose, png_int_32 X0, png_int_32 X1, int type,
int nparams, png_const_charp units, png_charpp params)
{
@@ -375,7 +375,7 @@
#ifdef PNG_sCAL_SUPPORTED
void PNGAPI
-png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
+png_set_sCAL_s(png_structrp png_ptr, png_inforp info_ptr,
int unit, png_const_charp swidth, png_const_charp sheight)
{
png_size_t lengthw = 0, lengthh = 0;
@@ -438,7 +438,7 @@
# ifdef PNG_FLOATING_POINT_SUPPORTED
void PNGAPI
-png_set_sCAL(png_structp png_ptr, png_infop info_ptr, int unit, double width,
+png_set_sCAL(png_structrp png_ptr, png_inforp info_ptr, int unit, double width,
double height)
{
png_debug1(1, "in %s storage function", "sCAL");
@@ -468,7 +468,7 @@
# ifdef PNG_FIXED_POINT_SUPPORTED
void PNGAPI
-png_set_sCAL_fixed(png_structp png_ptr, png_infop info_ptr, int unit,
+png_set_sCAL_fixed(png_structrp png_ptr, png_inforp info_ptr, int unit,
png_fixed_point width, png_fixed_point height)
{
png_debug1(1, "in %s storage function", "sCAL");
@@ -497,7 +497,7 @@
#ifdef PNG_pHYs_SUPPORTED
void PNGAPI
-png_set_pHYs(png_structp png_ptr, png_infop info_ptr,
+png_set_pHYs(png_structrp png_ptr, png_inforp info_ptr,
png_uint_32 res_x, png_uint_32 res_y, int unit_type)
{
png_debug1(1, "in %s storage function", "pHYs");
@@ -513,7 +513,7 @@
#endif
void PNGAPI
-png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
+png_set_PLTE(png_structrp png_ptr, png_inforp info_ptr,
png_const_colorp palette, int num_palette)
{
@@ -558,7 +558,7 @@
#ifdef PNG_sBIT_SUPPORTED
void PNGAPI
-png_set_sBIT(png_structp png_ptr, png_infop info_ptr,
+png_set_sBIT(png_structrp png_ptr, png_inforp info_ptr,
png_const_color_8p sig_bit)
{
png_debug1(1, "in %s storage function", "sBIT");
@@ -573,7 +573,7 @@
#ifdef PNG_sRGB_SUPPORTED
void PNGAPI
-png_set_sRGB(png_structp png_ptr, png_infop info_ptr, int srgb_intent)
+png_set_sRGB(png_structrp png_ptr, png_inforp info_ptr, int srgb_intent)
{
png_debug1(1, "in %s storage function", "sRGB");
@@ -585,7 +585,7 @@
}
void PNGAPI
-png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
+png_set_sRGB_gAMA_and_cHRM(png_structrp png_ptr, png_inforp info_ptr,
int srgb_intent)
{
png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM");
@@ -614,7 +614,7 @@
#ifdef PNG_iCCP_SUPPORTED
void PNGAPI
-png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
+png_set_iCCP(png_structrp png_ptr, png_inforp info_ptr,
png_const_charp name, int compression_type,
png_const_bytep profile, png_uint_32 proflen)
{
@@ -665,7 +665,7 @@
#ifdef PNG_TEXT_SUPPORTED
void PNGAPI
-png_set_text(png_structp png_ptr, png_infop info_ptr, png_const_textp text_ptr,
+png_set_text(png_structrp png_ptr, png_inforp info_ptr, png_const_textp text_ptr,
int num_text)
{
int ret;
@@ -676,7 +676,7 @@
}
int /* PRIVATE */
-png_set_text_2(png_structp png_ptr, png_infop info_ptr,
+png_set_text_2(png_structrp png_ptr, png_inforp info_ptr,
png_const_textp text_ptr, int num_text)
{
int i;
@@ -856,7 +856,7 @@
#ifdef PNG_tIME_SUPPORTED
void PNGAPI
-png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_const_timep mod_time)
+png_set_tIME(png_structrp png_ptr, png_inforp info_ptr, png_const_timep mod_time)
{
png_debug1(1, "in %s storage function", "tIME");
@@ -880,7 +880,7 @@
#ifdef PNG_tRNS_SUPPORTED
void PNGAPI
-png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
+png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
png_const_bytep trans_alpha, int num_trans, png_const_color_16p trans_color)
{
png_debug1(1, "in %s storage function", "tRNS");
@@ -937,8 +937,8 @@
#ifdef PNG_sPLT_SUPPORTED
void PNGAPI
-png_set_sPLT(png_structp png_ptr,
- png_infop info_ptr, png_const_sPLT_tp entries, int nentries)
+png_set_sPLT(png_structrp png_ptr,
+ png_inforp info_ptr, png_const_sPLT_tp entries, int nentries)
/*
* entries - array of png_sPLT_t structures
* to be added to the list of palettes
@@ -1015,8 +1015,8 @@
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
void PNGAPI
-png_set_unknown_chunks(png_structp png_ptr,
- png_infop info_ptr, png_const_unknown_chunkp unknowns, int num_unknowns)
+png_set_unknown_chunks(png_structrp png_ptr,
+ png_inforp info_ptr, png_const_unknown_chunkp unknowns, int num_unknowns)
{
png_unknown_chunkp np;
int i;
@@ -1080,7 +1080,7 @@
}
void PNGAPI
-png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr,
+png_set_unknown_chunk_location(png_structrp png_ptr, png_inforp info_ptr,
int chunk, int location)
{
if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk <
@@ -1092,7 +1092,7 @@
#ifdef PNG_MNG_FEATURES_SUPPORTED
png_uint_32 PNGAPI
-png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features)
+png_permit_mng_features (png_structrp png_ptr, png_uint_32 mng_features)
{
png_debug(1, "in png_permit_mng_features");
@@ -1108,7 +1108,7 @@
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
void PNGAPI
-png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_const_bytep
+png_set_keep_unknown_chunks(png_structrp png_ptr, int keep, png_const_bytep
chunk_list, int num_chunks)
{
png_bytep new_list, p;
@@ -1162,7 +1162,7 @@
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
void PNGAPI
-png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr,
+png_set_read_user_chunk_fn(png_structrp png_ptr, png_voidp user_chunk_ptr,
png_user_chunk_ptr read_user_chunk_fn)
{
png_debug(1, "in png_set_read_user_chunk_fn");
@@ -1177,7 +1177,7 @@
#ifdef PNG_INFO_IMAGE_SUPPORTED
void PNGAPI
-png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers)
+png_set_rows(png_structrp png_ptr, png_inforp info_ptr, png_bytepp row_pointers)
{
png_debug1(1, "in %s storage function", "rows");
@@ -1195,7 +1195,7 @@
#endif
void PNGAPI
-png_set_compression_buffer_size(png_structp png_ptr, png_size_t size)
+png_set_compression_buffer_size(png_structrp png_ptr, png_size_t size)
{
if (png_ptr == NULL)
return;
@@ -1223,7 +1223,7 @@
}
void PNGAPI
-png_set_invalid(png_const_structp png_ptr, png_infop info_ptr, int mask)
+png_set_invalid(png_const_structrp png_ptr, png_inforp info_ptr, int mask)
{
if (png_ptr && info_ptr)
info_ptr->valid &= ~mask;
@@ -1234,7 +1234,7 @@
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
/* This function was added to libpng 1.2.6 */
void PNGAPI
-png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max,
+png_set_user_limits (png_structrp png_ptr, png_uint_32 user_width_max,
png_uint_32 user_height_max)
{
/* Images with dimensions larger than these limits will be
@@ -1250,7 +1250,7 @@
/* This function was added to libpng 1.4.0 */
void PNGAPI
-png_set_chunk_cache_max (png_structp png_ptr,
+png_set_chunk_cache_max (png_structrp png_ptr,
png_uint_32 user_chunk_cache_max)
{
if (png_ptr)
@@ -1259,7 +1259,7 @@
/* This function was added to libpng 1.4.1 */
void PNGAPI
-png_set_chunk_malloc_max (png_structp png_ptr,
+png_set_chunk_malloc_max (png_structrp png_ptr,
png_alloc_size_t user_chunk_malloc_max)
{
if (png_ptr)
@@ -1270,7 +1270,7 @@
#ifdef PNG_BENIGN_ERRORS_SUPPORTED
void PNGAPI
-png_set_benign_errors(png_structp png_ptr, int allowed)
+png_set_benign_errors(png_structrp png_ptr, int allowed)
{
png_debug(1, "in png_set_benign_errors");