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Imported from libpng-0.99i.tar

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This commit is contained in:
Glenn Randers-Pehrson
1998-03-07 06:06:55 -06:00
parent cbe52d8720
commit 08a3343e05
48 changed files with 1232 additions and 174 deletions
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24
pngwrite.c
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@@ -1,12 +1,12 @@
/* pngwrite.c - general routines to write a PNG file
*
* libpng 0.99e
* libpng 1.00
* 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
* Copyright (c) 1998, Glenn Randers-Pehrson
* February 28, 1998
* March 7, 1998
*/
/* get internal access to png.h */
@@ -527,6 +527,9 @@ png_write_row(png_structp png_ptr, png_bytep row)
/* Find a filter if necessary, filter the row and write it out. */
png_write_find_filter(png_ptr, &(png_ptr->row_info));
if (png_ptr->write_row_fn != NULL)
(*(png_ptr->write_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass);
}
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
@@ -947,3 +950,20 @@ png_set_compression_method(png_structp png_ptr, int method)
png_ptr->zlib_method = method;
}
void
png_set_write_status_fn(png_structp png_ptr, png_write_status_ptr write_row_fn)
{
png_ptr->write_row_fn = write_row_fn;
}
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
void
png_set_write_user_transform_fn(png_structp png_ptr, png_user_transform_ptr
write_user_transform_fn)
{
png_debug(1, "in png_set_write_user_transform_fn\n");
png_ptr->transformations |= PNG_USER_TRANSFORM;
png_ptr->write_user_transform_fn = write_user_transform_fn;
}
#endif