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Imported from pngcrush-1.4.3.tar

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This commit is contained in:
Glenn Randers-Pehrson
2000-04-24 17:27:18 -05:00
parent a8dc4523c7
commit 0b5314cf35
22 changed files with 498 additions and 159 deletions
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21
pngset.c
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@@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* libpng 1.0.6f - April 14, 2000
* libpng 1.0.6h - April 24, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger
@@ -693,6 +693,14 @@ png_set_unknown_chunks(png_structp png_ptr,
info_ptr->unknown_chunks_num += num_unknowns;
info_ptr->free_me |= PNG_FREE_UNKN;
}
void
png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr,
int chunk, int location)
{
if(png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk <
(int)info_ptr->unknown_chunks_num)
info_ptr->unknown_chunks[chunk].location = (png_byte)location;
}
#endif
#if defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
@@ -772,3 +780,14 @@ png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers)
}
#endif
void
png_set_compression_buffer_size(png_structp png_ptr, png_uint_32 size)
{
if(png_ptr->zbuf)
png_free(png_ptr, png_ptr->zbuf);
png_ptr->zbuf_size = (png_size_t)size;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size);
png_ptr->zstream.next_out = png_ptr->zbuf;
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
}