--- a/src/3rdparty/libpng/pngwutil.c Wed Jun 23 19:07:03 2010 +0300
+++ b/src/3rdparty/libpng/pngwutil.c Tue Jul 06 15:10:48 2010 +0300
@@ -1,8 +1,8 @@
/* pngwutil.c - utilities to write a PNG file
*
- * Last changed in libpng 1.2.40 [September 10, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 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.)
*
@@ -11,9 +11,10 @@
* and license in png.h
*/
-#define PNG_INTERNAL
+#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#ifdef PNG_WRITE_SUPPORTED
+#include "pngpriv.h"
/* Place a 32-bit number into a buffer in PNG byte order. We work
* with unsigned numbers for convenience, although one supported
@@ -28,6 +29,7 @@
buf[3] = (png_byte)(i & 0xff);
}
+#ifdef PNG_SAVE_INT_32_SUPPORTED
/* The png_save_int_32 function assumes integers are stored in two's
* complement format. If this isn't the case, then this routine needs to
* be modified to write data in two's complement format.
@@ -40,6 +42,7 @@
buf[2] = (png_byte)((i >> 8) & 0xff);
buf[3] = (png_byte)(i & 0xff);
}
+#endif
/* Place a 16-bit number into a buffer in PNG byte order.
* The parameter is declared unsigned int, not png_uint_16,
@@ -58,11 +61,16 @@
* we should call png_set_sig_bytes() to tell libpng how many of the
* bytes have already been written.
*/
-void /* PRIVATE */
+void PNGAPI
png_write_sig(png_structp png_ptr)
{
png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
+#ifdef PNG_IO_STATE_SUPPORTED
+ /* Inform the I/O callback that the signature is being written */
+ png_ptr->io_state = PNG_IO_WRITING | PNG_IO_SIGNATURE;
+#endif
+
/* Write the rest of the 8 byte signature */
png_write_data(png_ptr, &png_signature[png_ptr->sig_bytes],
(png_size_t)(8 - png_ptr->sig_bytes));
@@ -106,6 +114,13 @@
if (png_ptr == NULL)
return;
+#ifdef PNG_IO_STATE_SUPPORTED
+ /* Inform the I/O callback that the chunk header is being written.
+ * PNG_IO_CHUNK_HDR requires a single I/O call.
+ */
+ png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_HDR;
+#endif
+
/* Write the length and the chunk name */
png_save_uint_32(buf, length);
png_memcpy(buf + 4, chunk_name, 4);
@@ -114,7 +129,14 @@
png_memcpy(png_ptr->chunk_name, chunk_name, 4);
/* Reset the crc and run it over the chunk name */
png_reset_crc(png_ptr);
- png_calculate_crc(png_ptr, chunk_name, (png_size_t)4);
+ png_calculate_crc(png_ptr, chunk_name, 4);
+
+#ifdef PNG_IO_STATE_SUPPORTED
+ /* Inform the I/O callback that chunk data will (possibly) be written.
+ * PNG_IO_CHUNK_DATA does NOT require a specific number of I/O calls.
+ */
+ png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_DATA;
+#endif
}
/* Write the data of a PNG chunk started with png_write_chunk_start().
@@ -146,6 +168,13 @@
if (png_ptr == NULL) return;
+#ifdef PNG_IO_STATE_SUPPORTED
+ /* Inform the I/O callback that the chunk CRC is being written.
+ * PNG_IO_CHUNK_CRC requires a single I/O function call.
+ */
+ png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_CRC;
+#endif
+
/* Write the crc in a single operation */
png_save_uint_32(buf, png_ptr->crc);
@@ -192,7 +221,7 @@
if (compression >= PNG_TEXT_COMPRESSION_LAST)
{
-#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
+#ifdef PNG_STDIO_SUPPORTED
char msg[50];
png_snprintf(msg, 50, "Unknown compression type %d", compression);
png_warning(png_ptr, msg);
@@ -251,7 +280,7 @@
old_ptr = comp->output_ptr;
comp->output_ptr = (png_charpp)png_malloc(png_ptr,
- (png_uint_32)
+ (png_alloc_size_t)
(comp->max_output_ptr * png_sizeof(png_charpp)));
png_memcpy(comp->output_ptr, old_ptr, old_max
* png_sizeof(png_charp));
@@ -259,14 +288,14 @@
}
else
comp->output_ptr = (png_charpp)png_malloc(png_ptr,
- (png_uint_32)
+ (png_alloc_size_t)
(comp->max_output_ptr * png_sizeof(png_charp)));
}
/* Save the data */
comp->output_ptr[comp->num_output_ptr] =
(png_charp)png_malloc(png_ptr,
- (png_uint_32)png_ptr->zbuf_size);
+ (png_alloc_size_t)png_ptr->zbuf_size);
png_memcpy(comp->output_ptr[comp->num_output_ptr], png_ptr->zbuf,
png_ptr->zbuf_size);
comp->num_output_ptr++;
@@ -303,7 +332,7 @@
old_ptr = comp->output_ptr;
/* This could be optimized to realloc() */
comp->output_ptr = (png_charpp)png_malloc(png_ptr,
- (png_uint_32)(comp->max_output_ptr *
+ (png_alloc_size_t)(comp->max_output_ptr *
png_sizeof(png_charp)));
png_memcpy(comp->output_ptr, old_ptr,
old_max * png_sizeof(png_charp));
@@ -311,14 +340,14 @@
}
else
comp->output_ptr = (png_charpp)png_malloc(png_ptr,
- (png_uint_32)(comp->max_output_ptr *
+ (png_alloc_size_t)(comp->max_output_ptr *
png_sizeof(png_charp)));
}
/* Save the data */
comp->output_ptr[comp->num_output_ptr] =
(png_charp)png_malloc(png_ptr,
- (png_uint_32)png_ptr->zbuf_size);
+ (png_alloc_size_t)png_ptr->zbuf_size);
png_memcpy(comp->output_ptr[comp->num_output_ptr], png_ptr->zbuf,
png_ptr->zbuf_size);
comp->num_output_ptr++;
@@ -366,11 +395,9 @@
png_write_chunk_data(png_ptr, (png_bytep)comp->output_ptr[i],
(png_size_t)png_ptr->zbuf_size);
png_free(png_ptr, comp->output_ptr[i]);
- comp->output_ptr[i]=NULL;
}
if (comp->max_output_ptr != 0)
png_free(png_ptr, comp->output_ptr);
- comp->output_ptr=NULL;
/* Write anything left in zbuf */
if (png_ptr->zstream.avail_out < (png_uint_32)png_ptr->zbuf_size)
png_write_chunk_data(png_ptr, png_ptr->zbuf,
@@ -391,9 +418,7 @@
int bit_depth, int color_type, int compression_type, int filter_type,
int interlace_type)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_IHDR;
-#endif
int ret;
png_byte buf[13]; /* Buffer to store the IHDR info */
@@ -459,7 +484,7 @@
* 5. The color_type is RGB or RGBA
*/
if (
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
+#ifdef PNG_MNG_FEATURES_SUPPORTED
!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
(color_type == PNG_COLOR_TYPE_RGB ||
@@ -487,7 +512,7 @@
png_ptr->bit_depth = (png_byte)bit_depth;
png_ptr->color_type = (png_byte)color_type;
png_ptr->interlaced = (png_byte)interlace_type;
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
+#ifdef PNG_MNG_FEATURES_SUPPORTED
png_ptr->filter_type = (png_byte)filter_type;
#endif
png_ptr->compression_type = (png_byte)compression_type;
@@ -569,9 +594,7 @@
void /* PRIVATE */
png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_PLTE;
-#endif
png_uint_32 i;
png_colorp pal_ptr;
png_byte buf[3];
@@ -579,7 +602,7 @@
png_debug(1, "in png_write_PLTE");
if ((
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
+#ifdef PNG_MNG_FEATURES_SUPPORTED
!(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) &&
#endif
num_pal == 0) || num_pal > 256)
@@ -607,7 +630,7 @@
png_write_chunk_start(png_ptr, (png_bytep)png_PLTE,
(png_uint_32)(num_pal * 3));
-#ifndef PNG_NO_POINTER_INDEXING
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
for (i = 0, pal_ptr = palette; i < num_pal; i++, pal_ptr++)
{
buf[0] = pal_ptr->red;
@@ -634,9 +657,7 @@
void /* PRIVATE */
png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_IDAT;
-#endif
png_debug(1, "in png_write_IDAT");
@@ -689,26 +710,22 @@
void /* PRIVATE */
png_write_IEND(png_structp png_ptr)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_IEND;
-#endif
png_debug(1, "in png_write_IEND");
- png_write_chunk(png_ptr, (png_bytep)png_IEND, png_bytep_NULL,
+ png_write_chunk(png_ptr, (png_bytep)png_IEND, NULL,
(png_size_t)0);
png_ptr->mode |= PNG_HAVE_IEND;
}
-#if defined(PNG_WRITE_gAMA_SUPPORTED)
+#ifdef PNG_WRITE_gAMA_SUPPORTED
/* Write a gAMA chunk */
#ifdef PNG_FLOATING_POINT_SUPPORTED
void /* PRIVATE */
png_write_gAMA(png_structp png_ptr, double file_gamma)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_gAMA;
-#endif
png_uint_32 igamma;
png_byte buf[4];
@@ -724,9 +741,7 @@
void /* PRIVATE */
png_write_gAMA_fixed(png_structp png_ptr, png_fixed_point file_gamma)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_gAMA;
-#endif
png_byte buf[4];
png_debug(1, "in png_write_gAMA");
@@ -738,14 +753,12 @@
#endif
#endif
-#if defined(PNG_WRITE_sRGB_SUPPORTED)
+#ifdef PNG_WRITE_sRGB_SUPPORTED
/* Write a sRGB chunk */
void /* PRIVATE */
png_write_sRGB(png_structp png_ptr, int srgb_intent)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_sRGB;
-#endif
png_byte buf[1];
png_debug(1, "in png_write_sRGB");
@@ -758,15 +771,13 @@
}
#endif
-#if defined(PNG_WRITE_iCCP_SUPPORTED)
+#ifdef PNG_WRITE_iCCP_SUPPORTED
/* Write an iCCP chunk */
void /* PRIVATE */
png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type,
png_charp profile, int profile_len)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_iCCP;
-#endif
png_size_t name_len;
png_charp new_name;
compression_state comp;
@@ -839,21 +850,19 @@
}
#endif
-#if defined(PNG_WRITE_sPLT_SUPPORTED)
+#ifdef PNG_WRITE_sPLT_SUPPORTED
/* Write a sPLT chunk */
void /* PRIVATE */
png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_sPLT;
-#endif
png_size_t name_len;
png_charp new_name;
png_byte entrybuf[10];
- int entry_size = (spalette->depth == 8 ? 6 : 10);
- int palette_size = entry_size * spalette->nentries;
+ png_size_t entry_size = (spalette->depth == 8 ? 6 : 10);
+ png_size_t palette_size = entry_size * spalette->nentries;
png_sPLT_entryp ep;
-#ifdef PNG_NO_POINTER_INDEXING
+#ifndef PNG_POINTER_INDEXING_SUPPORTED
int i;
#endif
@@ -870,7 +879,7 @@
png_write_chunk_data(png_ptr, (png_bytep)&spalette->depth, (png_size_t)1);
/* Loop through each palette entry, writing appropriately */
-#ifndef PNG_NO_POINTER_INDEXING
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
for (ep = spalette->entries; ep<spalette->entries + spalette->nentries; ep++)
{
if (spalette->depth == 8)
@@ -920,14 +929,12 @@
}
#endif
-#if defined(PNG_WRITE_sBIT_SUPPORTED)
+#ifdef PNG_WRITE_sBIT_SUPPORTED
/* Write the sBIT chunk */
void /* PRIVATE */
png_write_sBIT(png_structp png_ptr, png_color_8p sbit, int color_type)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_sBIT;
-#endif
png_byte buf[4];
png_size_t size;
@@ -977,7 +984,7 @@
}
#endif
-#if defined(PNG_WRITE_cHRM_SUPPORTED)
+#ifdef PNG_WRITE_cHRM_SUPPORTED
/* Write the cHRM chunk */
#ifdef PNG_FLOATING_POINT_SUPPORTED
void /* PRIVATE */
@@ -985,9 +992,7 @@
double red_x, double red_y, double green_x, double green_y,
double blue_x, double blue_y)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_cHRM;
-#endif
png_byte buf[32];
png_fixed_point int_white_x, int_white_y, int_red_x, int_red_y,
@@ -1004,7 +1009,7 @@
int_blue_x = (png_uint_32)(blue_x * 100000.0 + 0.5);
int_blue_y = (png_uint_32)(blue_y * 100000.0 + 0.5);
-#if !defined(PNG_NO_CHECK_cHRM)
+#ifdef PNG_CHECK_cHRM_SUPPORTED
if (png_check_cHRM_fixed(png_ptr, int_white_x, int_white_y,
int_red_x, int_red_y, int_green_x, int_green_y, int_blue_x, int_blue_y))
#endif
@@ -1034,15 +1039,13 @@
png_fixed_point green_x, png_fixed_point green_y, png_fixed_point blue_x,
png_fixed_point blue_y)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_cHRM;
-#endif
png_byte buf[32];
png_debug(1, "in png_write_cHRM");
/* Each value is saved in 1/100,000ths */
-#if !defined(PNG_NO_CHECK_cHRM)
+#ifdef PNG_CHECK_cHRM_SUPPORTED
if (png_check_cHRM_fixed(png_ptr, white_x, white_y, red_x, red_y,
green_x, green_y, blue_x, blue_y))
#endif
@@ -1065,15 +1068,13 @@
#endif
#endif
-#if defined(PNG_WRITE_tRNS_SUPPORTED)
+#ifdef PNG_WRITE_tRNS_SUPPORTED
/* Write the tRNS chunk */
void /* PRIVATE */
-png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran,
+png_write_tRNS(png_structp png_ptr, png_bytep trans_alpha, png_color_16p tran,
int num_trans, int color_type)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_tRNS;
-#endif
png_byte buf[6];
png_debug(1, "in png_write_tRNS");
@@ -1086,7 +1087,7 @@
return;
}
/* Write the chunk out as it is */
- png_write_chunk(png_ptr, (png_bytep)png_tRNS, trans,
+ png_write_chunk(png_ptr, (png_bytep)png_tRNS, trans_alpha,
(png_size_t)num_trans);
}
else if (color_type == PNG_COLOR_TYPE_GRAY)
@@ -1122,14 +1123,12 @@
}
#endif
-#if defined(PNG_WRITE_bKGD_SUPPORTED)
+#ifdef PNG_WRITE_bKGD_SUPPORTED
/* Write the background chunk */
void /* PRIVATE */
png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_bKGD;
-#endif
png_byte buf[6];
png_debug(1, "in png_write_bKGD");
@@ -1137,7 +1136,7 @@
if (color_type == PNG_COLOR_TYPE_PALETTE)
{
if (
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
+#ifdef PNG_MNG_FEATURES_SUPPORTED
(png_ptr->num_palette ||
(!(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE))) &&
#endif
@@ -1176,14 +1175,12 @@
}
#endif
-#if defined(PNG_WRITE_hIST_SUPPORTED)
+#ifdef PNG_WRITE_hIST_SUPPORTED
/* Write the histogram */
void /* PRIVATE */
png_write_hIST(png_structp png_ptr, png_uint_16p hist, int num_hist)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_hIST;
-#endif
int i;
png_byte buf[3];
@@ -1253,7 +1250,7 @@
if ((png_byte)*kp < 0x20 ||
((png_byte)*kp > 0x7E && (png_byte)*kp < 0xA1))
{
-#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
+#ifdef PNG_STDIO_SUPPORTED
char msg[40];
png_snprintf(msg, 40,
@@ -1325,7 +1322,6 @@
if (key_len == 0)
{
png_free(png_ptr, *new_key);
- *new_key=NULL;
png_warning(png_ptr, "Zero length keyword");
}
@@ -1340,15 +1336,13 @@
}
#endif
-#if defined(PNG_WRITE_tEXt_SUPPORTED)
+#ifdef PNG_WRITE_tEXt_SUPPORTED
/* Write a tEXt chunk */
void /* PRIVATE */
png_write_tEXt(png_structp png_ptr, png_charp key, png_charp text,
png_size_t text_len)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_tEXt;
-#endif
png_size_t key_len;
png_charp new_key;
@@ -1381,15 +1375,13 @@
}
#endif
-#if defined(PNG_WRITE_zTXt_SUPPORTED)
+#ifdef PNG_WRITE_zTXt_SUPPORTED
/* Write a compressed text chunk */
void /* PRIVATE */
png_write_zTXt(png_structp png_ptr, png_charp key, png_charp text,
png_size_t text_len, int compression)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_zTXt;
-#endif
png_size_t key_len;
char buf[1];
png_charp new_key;
@@ -1441,15 +1433,13 @@
}
#endif
-#if defined(PNG_WRITE_iTXt_SUPPORTED)
+#ifdef PNG_WRITE_iTXt_SUPPORTED
/* Write an iTXt chunk */
void /* PRIVATE */
png_write_iTXt(png_structp png_ptr, int compression, png_charp key,
png_charp lang, png_charp lang_key, png_charp text)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_iTXt;
-#endif
png_size_t lang_len, key_len, lang_key_len, text_len;
png_charp new_lang;
png_charp new_key = NULL;
@@ -1530,15 +1520,13 @@
}
#endif
-#if defined(PNG_WRITE_oFFs_SUPPORTED)
+#ifdef PNG_WRITE_oFFs_SUPPORTED
/* Write the oFFs chunk */
void /* PRIVATE */
png_write_oFFs(png_structp png_ptr, png_int_32 x_offset, png_int_32 y_offset,
int unit_type)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_oFFs;
-#endif
png_byte buf[9];
png_debug(1, "in png_write_oFFs");
@@ -1553,15 +1541,13 @@
png_write_chunk(png_ptr, (png_bytep)png_oFFs, buf, (png_size_t)9);
}
#endif
-#if defined(PNG_WRITE_pCAL_SUPPORTED)
+#ifdef PNG_WRITE_pCAL_SUPPORTED
/* Write the pCAL chunk (described in the PNG extensions document) */
void /* PRIVATE */
png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0,
png_int_32 X1, int type, int nparams, png_charp units, png_charpp params)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_pCAL;
-#endif
png_size_t purpose_len, units_len, total_len;
png_uint_32p params_len;
png_byte buf[10];
@@ -1580,7 +1566,7 @@
total_len = purpose_len + units_len + 10;
params_len = (png_uint_32p)png_malloc(png_ptr,
- (png_uint_32)(nparams * png_sizeof(png_uint_32)));
+ (png_alloc_size_t)(nparams * png_sizeof(png_uint_32)));
/* Find the length of each parameter, making sure we don't count the
null terminator for the last parameter. */
@@ -1616,42 +1602,23 @@
}
#endif
-#if defined(PNG_WRITE_sCAL_SUPPORTED)
+#ifdef PNG_WRITE_sCAL_SUPPORTED
/* Write the sCAL chunk */
-#if defined(PNG_FLOATING_POINT_SUPPORTED) && !defined(PNG_NO_STDIO)
+#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
void /* PRIVATE */
png_write_sCAL(png_structp png_ptr, int unit, double width, double height)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_sCAL;
-#endif
char buf[64];
png_size_t total_len;
png_debug(1, "in png_write_sCAL");
buf[0] = (char)unit;
-#if defined(_WIN32_WCE)
-/* sprintf() function is not supported on WindowsCE */
- {
- wchar_t wc_buf[32];
- size_t wc_len;
- swprintf(wc_buf, TEXT("%12.12e"), width);
- wc_len = wcslen(wc_buf);
- WideCharToMultiByte(CP_ACP, 0, wc_buf, -1, buf + 1, wc_len, NULL, NULL);
- total_len = wc_len + 2;
- swprintf(wc_buf, TEXT("%12.12e"), height);
- wc_len = wcslen(wc_buf);
- WideCharToMultiByte(CP_ACP, 0, wc_buf, -1, buf + total_len, wc_len,
- NULL, NULL);
- total_len += wc_len;
- }
-#else
png_snprintf(buf + 1, 63, "%12.12e", width);
total_len = 1 + png_strlen(buf + 1) + 1;
png_snprintf(buf + total_len, 64-total_len, "%12.12e", height);
total_len += png_strlen(buf + total_len);
-#endif
png_debug1(3, "sCAL total length = %u", (unsigned int)total_len);
png_write_chunk(png_ptr, (png_bytep)png_sCAL, (png_bytep)buf, total_len);
@@ -1662,9 +1629,7 @@
png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width,
png_charp height)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_sCAL;
-#endif
png_byte buf[64];
png_size_t wlen, hlen, total_len;
@@ -1690,16 +1655,14 @@
#endif
#endif
-#if defined(PNG_WRITE_pHYs_SUPPORTED)
+#ifdef PNG_WRITE_pHYs_SUPPORTED
/* Write the pHYs chunk */
void /* PRIVATE */
png_write_pHYs(png_structp png_ptr, png_uint_32 x_pixels_per_unit,
png_uint_32 y_pixels_per_unit,
int unit_type)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_pHYs;
-#endif
png_byte buf[9];
png_debug(1, "in png_write_pHYs");
@@ -1715,16 +1678,14 @@
}
#endif
-#if defined(PNG_WRITE_tIME_SUPPORTED)
+#ifdef PNG_WRITE_tIME_SUPPORTED
/* Write the tIME chunk. Use either png_convert_from_struct_tm()
* or png_convert_from_time_t(), or fill in the structure yourself.
*/
void /* PRIVATE */
png_write_tIME(png_structp png_ptr, png_timep mod_time)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
PNG_tIME;
-#endif
png_byte buf[7];
png_debug(1, "in png_write_tIME");
@@ -1753,7 +1714,6 @@
png_write_start_row(png_structp png_ptr)
{
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
-#ifdef PNG_USE_LOCAL_ARRAYS
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
@@ -1768,7 +1728,6 @@
/* Offset to next interlace block in the y direction */
int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif
-#endif
png_size_t buf_size;
@@ -1779,48 +1738,47 @@
/* Set up row buffer */
png_ptr->row_buf = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)buf_size);
+ (png_alloc_size_t)buf_size);
png_ptr->row_buf[0] = PNG_FILTER_VALUE_NONE;
-#ifndef PNG_NO_WRITE_FILTER
+#ifdef PNG_WRITE_FILTER_SUPPORTED
/* Set up filtering buffer, if using this filter */
if (png_ptr->do_filter & PNG_FILTER_SUB)
{
png_ptr->sub_row = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(png_ptr->rowbytes + 1));
+ (png_alloc_size_t)(png_ptr->rowbytes + 1));
png_ptr->sub_row[0] = PNG_FILTER_VALUE_SUB;
}
/* We only need to keep the previous row if we are using one of these. */
if (png_ptr->do_filter & (PNG_FILTER_AVG | PNG_FILTER_UP | PNG_FILTER_PAETH))
{
- /* Set up previous row buffer */
- png_ptr->prev_row = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)buf_size);
- png_memset(png_ptr->prev_row, 0, buf_size);
+ /* Set up previous row buffer */
+ png_ptr->prev_row = (png_bytep)png_calloc(png_ptr,
+ (png_alloc_size_t)buf_size);
if (png_ptr->do_filter & PNG_FILTER_UP)
{
png_ptr->up_row = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(png_ptr->rowbytes + 1));
+ (png_size_t)(png_ptr->rowbytes + 1));
png_ptr->up_row[0] = PNG_FILTER_VALUE_UP;
}
if (png_ptr->do_filter & PNG_FILTER_AVG)
{
png_ptr->avg_row = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(png_ptr->rowbytes + 1));
+ (png_alloc_size_t)(png_ptr->rowbytes + 1));
png_ptr->avg_row[0] = PNG_FILTER_VALUE_AVG;
}
if (png_ptr->do_filter & PNG_FILTER_PAETH)
{
png_ptr->paeth_row = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(png_ptr->rowbytes + 1));
+ (png_size_t)(png_ptr->rowbytes + 1));
png_ptr->paeth_row[0] = PNG_FILTER_VALUE_PAETH;
}
}
-#endif /* PNG_NO_WRITE_FILTER */
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
/* If interlaced, we need to set up width and height of pass */
@@ -1854,7 +1812,6 @@
png_write_finish_row(png_structp png_ptr)
{
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
-#ifdef PNG_USE_LOCAL_ARRAYS
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
@@ -1869,7 +1826,6 @@
/* Offset to next interlace block in the y direction */
int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif
-#endif
int ret;
@@ -1962,7 +1918,7 @@
png_ptr->zstream.data_type = Z_BINARY;
}
-#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
/* Pick out the correct pixels for the interlace pass.
* The basic idea here is to go through the row with a source
* pointer and a destination pointer (sp and dp), and copy the
@@ -1973,7 +1929,6 @@
void /* PRIVATE */
png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
{
-#ifdef PNG_USE_LOCAL_ARRAYS
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
@@ -1981,16 +1936,11 @@
/* Offset to next interlace block */
int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
-#endif
png_debug(1, "in png_do_write_interlace");
/* We don't have to do anything on the last pass (6) */
-#if defined(PNG_USELESS_TESTS_SUPPORTED)
- if (row != NULL && row_info != NULL && pass < 6)
-#else
if (pass < 6)
-#endif
{
/* Each pixel depth is handled separately */
switch (row_info->pixel_depth)
@@ -2146,7 +2096,7 @@
png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
{
png_bytep best_row;
-#ifndef PNG_NO_WRITE_FILTER
+#ifdef PNG_WRITE_FILTER_SUPPORTED
png_bytep prev_row, row_buf;
png_uint_32 mins, bpp;
png_byte filter_to_do = png_ptr->do_filter;
@@ -2157,13 +2107,21 @@
png_debug(1, "in png_write_find_filter");
+#ifndef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+ if (png_ptr->row_number == 0 && filter_to_do == PNG_ALL_FILTERS)
+ {
+ /* These will never be selected so we need not test them. */
+ filter_to_do &= ~(PNG_FILTER_UP | PNG_FILTER_PAETH);
+ }
+#endif
+
/* Find out how many bytes offset each pixel is */
bpp = (row_info->pixel_depth + 7) >> 3;
prev_row = png_ptr->prev_row;
#endif
best_row = png_ptr->row_buf;
-#ifndef PNG_NO_WRITE_FILTER
+#ifdef PNG_WRITE_FILTER_SUPPORTED
row_buf = best_row;
mins = PNG_MAXSUM;
@@ -2206,7 +2164,7 @@
sum += (v < 128) ? v : 256 - v;
}
-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
png_uint_32 sumhi, sumlo;
@@ -2270,7 +2228,7 @@
png_uint_32 i;
int v;
-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
/* We temporarily increase the "minimum sum" by the factor we
* would reduce the sum of this filter, so that we can do the
* early exit comparison without scaling the sum each time.
@@ -2323,7 +2281,7 @@
break;
}
-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
int j;
@@ -2384,7 +2342,7 @@
int v;
-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
int j;
@@ -2426,7 +2384,7 @@
break;
}
-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
int j;
@@ -2489,7 +2447,7 @@
png_uint_32 i;
int v;
-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
int j;
@@ -2538,7 +2496,7 @@
break;
}
-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
int j;
@@ -2622,7 +2580,7 @@
png_uint_32 i;
int v;
-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
int j;
@@ -2703,7 +2661,7 @@
break;
}
-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
int j;
@@ -2739,13 +2697,13 @@
best_row = png_ptr->paeth_row;
}
}
-#endif /* PNG_NO_WRITE_FILTER */
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
/* Do the actual writing of the filtered row data from the chosen filter. */
png_write_filtered_row(png_ptr, best_row);
-#ifndef PNG_NO_WRITE_FILTER
-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
/* Save the type of filter we picked this time for future calculations */
if (png_ptr->num_prev_filters > 0)
{
@@ -2757,7 +2715,7 @@
png_ptr->prev_filters[j] = best_row[0];
}
#endif
-#endif /* PNG_NO_WRITE_FILTER */
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
}
@@ -2812,7 +2770,7 @@
/* Finish row - updates counters and flushes zlib if last row */
png_write_finish_row(png_ptr);
-#if defined(PNG_WRITE_FLUSH_SUPPORTED)
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
png_ptr->flush_rows++;
if (png_ptr->flush_dist > 0 &&