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[devel] Changed some "#if defined(" to "ifdef"

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This commit is contained in:
Glenn Randers-Pehrson
2009-09-23 11:22:08 -05:00
parent 212defee0f
commit e26c09529a
14 changed files with 511 additions and 511 deletions
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188
pngread.c
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@@ -1,7 +1,7 @@
/* pngread.c - read a PNG file
*
* Last changed in libpng 1.4.0 [September 20, 2009]
* Last changed in libpng 1.4.0 [September 23, 2009]
* Copyright (c) 1998-2009 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.)
@@ -15,7 +15,7 @@
*/
#include "png.h"
#if defined(PNG_READ_SUPPORTED)
#ifdef PNG_READ_SUPPORTED
#include "pngpriv.h"
@@ -235,55 +235,55 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
PNG_IDAT;
PNG_IEND;
PNG_PLTE;
#if defined(PNG_READ_bKGD_SUPPORTED)
#ifdef PNG_READ_bKGD_SUPPORTED
PNG_bKGD;
#endif
#if defined(PNG_READ_cHRM_SUPPORTED)
#ifdef PNG_READ_cHRM_SUPPORTED
PNG_cHRM;
#endif
#if defined(PNG_READ_gAMA_SUPPORTED)
#ifdef PNG_READ_gAMA_SUPPORTED
PNG_gAMA;
#endif
#if defined(PNG_READ_hIST_SUPPORTED)
#ifdef PNG_READ_hIST_SUPPORTED
PNG_hIST;
#endif
#if defined(PNG_READ_iCCP_SUPPORTED)
#ifdef PNG_READ_iCCP_SUPPORTED
PNG_iCCP;
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
#ifdef PNG_READ_iTXt_SUPPORTED
PNG_iTXt;
#endif
#if defined(PNG_READ_oFFs_SUPPORTED)
#ifdef PNG_READ_oFFs_SUPPORTED
PNG_oFFs;
#endif
#if defined(PNG_READ_pCAL_SUPPORTED)
#ifdef PNG_READ_pCAL_SUPPORTED
PNG_pCAL;
#endif
#if defined(PNG_READ_pHYs_SUPPORTED)
#ifdef PNG_READ_pHYs_SUPPORTED
PNG_pHYs;
#endif
#if defined(PNG_READ_sBIT_SUPPORTED)
#ifdef PNG_READ_sBIT_SUPPORTED
PNG_sBIT;
#endif
#if defined(PNG_READ_sCAL_SUPPORTED)
#ifdef PNG_READ_sCAL_SUPPORTED
PNG_sCAL;
#endif
#if defined(PNG_READ_sPLT_SUPPORTED)
#ifdef PNG_READ_sPLT_SUPPORTED
PNG_sPLT;
#endif
#if defined(PNG_READ_sRGB_SUPPORTED)
#ifdef PNG_READ_sRGB_SUPPORTED
PNG_sRGB;
#endif
#if defined(PNG_READ_tEXt_SUPPORTED)
#ifdef PNG_READ_tEXt_SUPPORTED
PNG_tEXt;
#endif
#if defined(PNG_READ_tIME_SUPPORTED)
#ifdef PNG_READ_tIME_SUPPORTED
PNG_tIME;
#endif
#if defined(PNG_READ_tRNS_SUPPORTED)
#ifdef PNG_READ_tRNS_SUPPORTED
PNG_tRNS;
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
#ifdef PNG_READ_zTXt_SUPPORTED
PNG_zTXt;
#endif
png_uint_32 length = png_read_chunk_header(png_ptr);
@@ -333,71 +333,71 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
png_ptr->mode |= PNG_HAVE_IDAT;
break;
}
#if defined(PNG_READ_bKGD_SUPPORTED)
#ifdef PNG_READ_bKGD_SUPPORTED
else if (!png_memcmp(chunk_name, png_bKGD, 4))
png_handle_bKGD(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_cHRM_SUPPORTED)
#ifdef PNG_READ_cHRM_SUPPORTED
else if (!png_memcmp(chunk_name, png_cHRM, 4))
png_handle_cHRM(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_gAMA_SUPPORTED)
#ifdef PNG_READ_gAMA_SUPPORTED
else if (!png_memcmp(chunk_name, png_gAMA, 4))
png_handle_gAMA(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_hIST_SUPPORTED)
#ifdef PNG_READ_hIST_SUPPORTED
else if (!png_memcmp(chunk_name, png_hIST, 4))
png_handle_hIST(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_oFFs_SUPPORTED)
#ifdef PNG_READ_oFFs_SUPPORTED
else if (!png_memcmp(chunk_name, png_oFFs, 4))
png_handle_oFFs(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_pCAL_SUPPORTED)
#ifdef PNG_READ_pCAL_SUPPORTED
else if (!png_memcmp(chunk_name, png_pCAL, 4))
png_handle_pCAL(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sCAL_SUPPORTED)
#ifdef PNG_READ_sCAL_SUPPORTED
else if (!png_memcmp(chunk_name, png_sCAL, 4))
png_handle_sCAL(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_pHYs_SUPPORTED)
#ifdef PNG_READ_pHYs_SUPPORTED
else if (!png_memcmp(chunk_name, png_pHYs, 4))
png_handle_pHYs(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sBIT_SUPPORTED)
#ifdef PNG_READ_sBIT_SUPPORTED
else if (!png_memcmp(chunk_name, png_sBIT, 4))
png_handle_sBIT(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sRGB_SUPPORTED)
#ifdef PNG_READ_sRGB_SUPPORTED
else if (!png_memcmp(chunk_name, png_sRGB, 4))
png_handle_sRGB(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_iCCP_SUPPORTED)
#ifdef PNG_READ_iCCP_SUPPORTED
else if (!png_memcmp(chunk_name, png_iCCP, 4))
png_handle_iCCP(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sPLT_SUPPORTED)
#ifdef PNG_READ_sPLT_SUPPORTED
else if (!png_memcmp(chunk_name, png_sPLT, 4))
png_handle_sPLT(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_tEXt_SUPPORTED)
#ifdef PNG_READ_tEXt_SUPPORTED
else if (!png_memcmp(chunk_name, png_tEXt, 4))
png_handle_tEXt(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_tIME_SUPPORTED)
#ifdef PNG_READ_tIME_SUPPORTED
else if (!png_memcmp(chunk_name, png_tIME, 4))
png_handle_tIME(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_tRNS_SUPPORTED)
#ifdef PNG_READ_tRNS_SUPPORTED
else if (!png_memcmp(chunk_name, png_tRNS, 4))
png_handle_tRNS(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
#ifdef PNG_READ_zTXt_SUPPORTED
else if (!png_memcmp(chunk_name, png_zTXt, 4))
png_handle_zTXt(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
#ifdef PNG_READ_iTXt_SUPPORTED
else if (!png_memcmp(chunk_name, png_iTXt, 4))
png_handle_iTXt(png_ptr, info_ptr, length);
#endif
@@ -492,7 +492,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
#endif
}
#if defined(PNG_READ_INTERLACING_SUPPORTED)
#ifdef PNG_READ_INTERLACING_SUPPORTED
/* If interlaced and we do not need a new row, combine row and return */
if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
{
@@ -625,7 +625,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
png_memcpy(png_ptr->prev_row, png_ptr->row_buf, png_ptr->rowbytes + 1);
#if defined(PNG_MNG_FEATURES_SUPPORTED)
#ifdef PNG_MNG_FEATURES_SUPPORTED
if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
(png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
{
@@ -638,7 +638,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA))
png_do_read_transformations(png_ptr);
#if defined(PNG_READ_INTERLACING_SUPPORTED)
#ifdef PNG_READ_INTERLACING_SUPPORTED
/* Blow up interlaced rows to full size */
if (png_ptr->interlaced &&
(png_ptr->transformations & PNG_INTERLACE))
@@ -806,55 +806,55 @@ png_read_end(png_structp png_ptr, png_infop info_ptr)
PNG_IDAT;
PNG_IEND;
PNG_PLTE;
#if defined(PNG_READ_bKGD_SUPPORTED)
#ifdef PNG_READ_bKGD_SUPPORTED
PNG_bKGD;
#endif
#if defined(PNG_READ_cHRM_SUPPORTED)
#ifdef PNG_READ_cHRM_SUPPORTED
PNG_cHRM;
#endif
#if defined(PNG_READ_gAMA_SUPPORTED)
#ifdef PNG_READ_gAMA_SUPPORTED
PNG_gAMA;
#endif
#if defined(PNG_READ_hIST_SUPPORTED)
#ifdef PNG_READ_hIST_SUPPORTED
PNG_hIST;
#endif
#if defined(PNG_READ_iCCP_SUPPORTED)
#ifdef PNG_READ_iCCP_SUPPORTED
PNG_iCCP;
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
#ifdef PNG_READ_iTXt_SUPPORTED
PNG_iTXt;
#endif
#if defined(PNG_READ_oFFs_SUPPORTED)
#ifdef PNG_READ_oFFs_SUPPORTED
PNG_oFFs;
#endif
#if defined(PNG_READ_pCAL_SUPPORTED)
#ifdef PNG_READ_pCAL_SUPPORTED
PNG_pCAL;
#endif
#if defined(PNG_READ_pHYs_SUPPORTED)
#ifdef PNG_READ_pHYs_SUPPORTED
PNG_pHYs;
#endif
#if defined(PNG_READ_sBIT_SUPPORTED)
#ifdef PNG_READ_sBIT_SUPPORTED
PNG_sBIT;
#endif
#if defined(PNG_READ_sCAL_SUPPORTED)
#ifdef PNG_READ_sCAL_SUPPORTED
PNG_sCAL;
#endif
#if defined(PNG_READ_sPLT_SUPPORTED)
#ifdef PNG_READ_sPLT_SUPPORTED
PNG_sPLT;
#endif
#if defined(PNG_READ_sRGB_SUPPORTED)
#ifdef PNG_READ_sRGB_SUPPORTED
PNG_sRGB;
#endif
#if defined(PNG_READ_tEXt_SUPPORTED)
#ifdef PNG_READ_tEXt_SUPPORTED
PNG_tEXt;
#endif
#if defined(PNG_READ_tIME_SUPPORTED)
#ifdef PNG_READ_tIME_SUPPORTED
PNG_tIME;
#endif
#if defined(PNG_READ_tRNS_SUPPORTED)
#ifdef PNG_READ_tRNS_SUPPORTED
PNG_tRNS;
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
#ifdef PNG_READ_zTXt_SUPPORTED
PNG_zTXt;
#endif
png_uint_32 length = png_read_chunk_header(png_ptr);
@@ -888,71 +888,71 @@ png_read_end(png_structp png_ptr, png_infop info_ptr)
}
else if (!png_memcmp(chunk_name, png_PLTE, 4))
png_handle_PLTE(png_ptr, info_ptr, length);
#if defined(PNG_READ_bKGD_SUPPORTED)
#ifdef PNG_READ_bKGD_SUPPORTED
else if (!png_memcmp(chunk_name, png_bKGD, 4))
png_handle_bKGD(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_cHRM_SUPPORTED)
#ifdef PNG_READ_cHRM_SUPPORTED
else if (!png_memcmp(chunk_name, png_cHRM, 4))
png_handle_cHRM(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_gAMA_SUPPORTED)
#ifdef PNG_READ_gAMA_SUPPORTED
else if (!png_memcmp(chunk_name, png_gAMA, 4))
png_handle_gAMA(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_hIST_SUPPORTED)
#ifdef PNG_READ_hIST_SUPPORTED
else if (!png_memcmp(chunk_name, png_hIST, 4))
png_handle_hIST(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_oFFs_SUPPORTED)
#ifdef PNG_READ_oFFs_SUPPORTED
else if (!png_memcmp(chunk_name, png_oFFs, 4))
png_handle_oFFs(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_pCAL_SUPPORTED)
#ifdef PNG_READ_pCAL_SUPPORTED
else if (!png_memcmp(chunk_name, png_pCAL, 4))
png_handle_pCAL(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sCAL_SUPPORTED)
#ifdef PNG_READ_sCAL_SUPPORTED
else if (!png_memcmp(chunk_name, png_sCAL, 4))
png_handle_sCAL(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_pHYs_SUPPORTED)
#ifdef PNG_READ_pHYs_SUPPORTED
else if (!png_memcmp(chunk_name, png_pHYs, 4))
png_handle_pHYs(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sBIT_SUPPORTED)
#ifdef PNG_READ_sBIT_SUPPORTED
else if (!png_memcmp(chunk_name, png_sBIT, 4))
png_handle_sBIT(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sRGB_SUPPORTED)
#ifdef PNG_READ_sRGB_SUPPORTED
else if (!png_memcmp(chunk_name, png_sRGB, 4))
png_handle_sRGB(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_iCCP_SUPPORTED)
#ifdef PNG_READ_iCCP_SUPPORTED
else if (!png_memcmp(chunk_name, png_iCCP, 4))
png_handle_iCCP(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sPLT_SUPPORTED)
#ifdef PNG_READ_sPLT_SUPPORTED
else if (!png_memcmp(chunk_name, png_sPLT, 4))
png_handle_sPLT(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_tEXt_SUPPORTED)
#ifdef PNG_READ_tEXt_SUPPORTED
else if (!png_memcmp(chunk_name, png_tEXt, 4))
png_handle_tEXt(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_tIME_SUPPORTED)
#ifdef PNG_READ_tIME_SUPPORTED
else if (!png_memcmp(chunk_name, png_tIME, 4))
png_handle_tIME(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_tRNS_SUPPORTED)
#ifdef PNG_READ_tRNS_SUPPORTED
else if (!png_memcmp(chunk_name, png_tRNS, 4))
png_handle_tRNS(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
#ifdef PNG_READ_zTXt_SUPPORTED
else if (!png_memcmp(chunk_name, png_zTXt, 4))
png_handle_zTXt(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
#ifdef PNG_READ_iTXt_SUPPORTED
else if (!png_memcmp(chunk_name, png_iTXt, 4))
png_handle_iTXt(png_ptr, info_ptr, length);
#endif
@@ -996,7 +996,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
if (info_ptr != NULL)
{
#if defined(PNG_TEXT_SUPPORTED)
#ifdef PNG_TEXT_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, -1);
#endif
@@ -1011,7 +1011,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
if (end_info_ptr != NULL)
{
#if defined(PNG_READ_TEXT_SUPPORTED)
#ifdef PNG_READ_TEXT_SUPPORTED
png_free_data(png_ptr, end_info_ptr, PNG_FREE_TEXT, -1);
#endif
#ifdef PNG_USER_MEM_SUPPORTED
@@ -1061,14 +1061,14 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
png_free(png_ptr, png_ptr->big_row_buf);
png_free(png_ptr, png_ptr->prev_row);
png_free(png_ptr, png_ptr->chunkdata);
#if defined(PNG_READ_DITHER_SUPPORTED)
#ifdef PNG_READ_DITHER_SUPPORTED
png_free(png_ptr, png_ptr->palette_lookup);
png_free(png_ptr, png_ptr->dither_index);
#endif
#if defined(PNG_READ_GAMMA_SUPPORTED)
#ifdef PNG_READ_GAMMA_SUPPORTED
png_free(png_ptr, png_ptr->gamma_table);
#endif
#if defined(PNG_READ_BACKGROUND_SUPPORTED)
#ifdef PNG_READ_BACKGROUND_SUPPORTED
png_free(png_ptr, png_ptr->gamma_from_1);
png_free(png_ptr, png_ptr->gamma_to_1);
#endif
@@ -1081,12 +1081,12 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
png_free(png_ptr, png_ptr->trans_alpha);
png_ptr->free_me &= ~PNG_FREE_TRNS;
#endif
#if defined(PNG_READ_hIST_SUPPORTED)
#ifdef PNG_READ_hIST_SUPPORTED
if (png_ptr->free_me & PNG_FREE_HIST)
png_free(png_ptr, png_ptr->hist);
png_ptr->free_me &= ~PNG_FREE_HIST;
#endif
#if defined(PNG_READ_GAMMA_SUPPORTED)
#ifdef PNG_READ_GAMMA_SUPPORTED
if (png_ptr->gamma_16_table != NULL)
{
int i;
@@ -1097,7 +1097,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
}
png_free(png_ptr, png_ptr->gamma_16_table);
}
#if defined(PNG_READ_BACKGROUND_SUPPORTED)
#ifdef PNG_READ_BACKGROUND_SUPPORTED
if (png_ptr->gamma_16_from_1 != NULL)
{
int i;
@@ -1120,7 +1120,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
}
#endif
#endif
#if defined(PNG_TIME_RFC1123_SUPPORTED)
#ifdef PNG_TIME_RFC1123_SUPPORTED
png_free(png_ptr, png_ptr->time_buffer);
#endif
@@ -1174,7 +1174,7 @@ png_set_read_status_fn(png_structp png_ptr, png_read_status_ptr read_row_fn)
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
#if defined(PNG_INFO_IMAGE_SUPPORTED)
#ifdef PNG_INFO_IMAGE_SUPPORTED
void PNGAPI
png_read_png(png_structp png_ptr, png_infop info_ptr,
int transforms,
@@ -1194,14 +1194,14 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
/* -------------- image transformations start here ------------------- */
#if defined(PNG_READ_16_TO_8_SUPPORTED)
#ifdef PNG_READ_16_TO_8_SUPPORTED
/* Tell libpng to strip 16 bit/color files down to 8 bits per color.
*/
if (transforms & PNG_TRANSFORM_STRIP_16)
png_set_strip_16(png_ptr);
#endif
#if defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
/* Strip alpha bytes from the input data without combining with
* the background (not recommended).
*/
@@ -1217,7 +1217,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
png_set_packing(png_ptr);
#endif
#if defined(PNG_READ_PACKSWAP_SUPPORTED)
#ifdef PNG_READ_PACKSWAP_SUPPORTED
/* Change the order of packed pixels to least significant bit first
* (not useful if you are using png_set_packing).
*/
@@ -1225,7 +1225,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
png_set_packswap(png_ptr);
#endif
#if defined(PNG_READ_EXPAND_SUPPORTED)
#ifdef PNG_READ_EXPAND_SUPPORTED
/* Expand paletted colors into true RGB triplets
* Expand grayscale images to full 8 bits from 1, 2, or 4 bits/pixel
* Expand paletted or RGB images with transparency to full alpha
@@ -1241,14 +1241,14 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
/* We don't handle background color or gamma transformation or dithering.
*/
#if defined(PNG_READ_INVERT_SUPPORTED)
#ifdef PNG_READ_INVERT_SUPPORTED
/* Invert monochrome files to have 0 as white and 1 as black
*/
if (transforms & PNG_TRANSFORM_INVERT_MONO)
png_set_invert_mono(png_ptr);
#endif
#if defined(PNG_READ_SHIFT_SUPPORTED)
#ifdef PNG_READ_SHIFT_SUPPORTED
/* If you want to shift the pixel values from the range [0,255] or
* [0,65535] to the original [0,7] or [0,31], or whatever range the
* colors were originally in:
@@ -1263,35 +1263,35 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_READ_BGR_SUPPORTED)
#ifdef PNG_READ_BGR_SUPPORTED
/* Flip the RGB pixels to BGR (or RGBA to BGRA)
*/
if (transforms & PNG_TRANSFORM_BGR)
png_set_bgr(png_ptr);
#endif
#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED)
#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
/* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR)
*/
if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
png_set_swap_alpha(png_ptr);
#endif
#if defined(PNG_READ_SWAP_SUPPORTED)
#ifdef PNG_READ_SWAP_SUPPORTED
/* Swap bytes of 16 bit files to least significant byte first
*/
if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
png_set_swap(png_ptr);
#endif
#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED)
#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
/* Invert the alpha channel from opacity to transparency
*/
if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
png_set_invert_alpha(png_ptr);
#endif
#if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED)
#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
/* Expand grayscale image to RGB
*/
if (transforms & PNG_TRANSFORM_GRAY_TO_RGB)