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Imported from libpng-0.97a.tar

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This commit is contained in:
Glenn Randers-Pehrson
1998-01-03 22:40:55 -06:00
parent b6ce43d6ff
commit 70e3f543f1
14 changed files with 460 additions and 135 deletions
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23
pngwrite.c
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@@ -24,7 +24,9 @@
void
png_write_info(png_structp png_ptr, png_infop info_ptr)
{
#if defined(PNG_WRITE_tEXt_SUPPORTED) || defined(PNG_WRITE_zTXt_SUPPORTED)
int i;
#endif
png_debug(1, "in png_write_info\n");
png_write_sig(png_ptr); /* write PNG signature */
@@ -146,7 +148,9 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
/* see if user wants us to write information chunks */
if (info_ptr != NULL)
{
#if defined(PNG_WRITE_tEXt_SUPPORTED) || defined(PNG_WRITE_zTXt_SUPPORTED)
int i; /* local index variable */
#endif
#if defined(PNG_WRITE_tIME_SUPPORTED)
/* check to see if user has supplied a time chunk */
if (info_ptr->valid & PNG_INFO_tIME &&
@@ -210,9 +214,22 @@ png_convert_to_rfc1152(png_structp png_ptr, png_timep ptime)
png_ptr->time_buffer = (png_charp)png_malloc(png_ptr, 29*sizeof(char));
}
#ifdef USE_FAR_KEYWORD
{
char near_time_buf[29];
sprintf(near_time_buf, "%d %s %d %02d:%02d:%02d +0000",
ptime->day % 31, short_months[ptime->month],
ptime->year, ptime->hour % 24, ptime->minute % 60,
ptime->second % 61);
png_memcpy(png_ptr->time_buffer, near_time_buf,
29*sizeof(char));
}
#else
sprintf(png_ptr->time_buffer, "%d %s %d %02d:%02d:%02d +0000",
ptime->day % 31, short_months[ptime->month], ptime->year,
ptime->hour % 24, ptime->minute % 60, ptime->second % 61);
ptime->day % 31, short_months[ptime->month],
ptime->year, ptime->hour % 24, ptime->minute % 60,
ptime->second % 61);
#endif
return png_ptr->time_buffer;
}
#endif /* PNG_TIME_RFC1152_SUPPORTED */
@@ -732,7 +749,9 @@ png_set_filter_heuristics(png_structp png_ptr, int heuristic_method,
int num_weights, png_doublep filter_weights,
png_doublep filter_costs)
{
#if defined(PNG_WRITE_tEXt_SUPPORTED) || defined(PNG_WRITE_zTXt_SUPPORTED)
int i;
#endif
png_debug(1, "in png_set_filter_heuristics\n");
if (heuristic_method >= PNG_FILTER_HEURISTIC_LAST)