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Checkpoint for 'methodical' filter selection

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This checkpoint is to allow the massive merge with the recent mainline libpng17
changes.

Signed-off-by: John Bowler <jbowler@acm.org>
This commit is contained in:
John Bowler
2015-12-03 13:25:11 -08:00
parent 9fce04fcd6
commit 86499967c3
4 changed files with 181 additions and 143 deletions
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8
pngstruct.h
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@@ -67,6 +67,11 @@
typedef struct png_compression_buffer *png_compression_bufferp;
#endif
#ifdef PNG_SELECT_FILTER_METHODICALLY_SUPPORTED
/* Type of the data cache used when selecting filters methodicially */
typedef struct png_filter_select *png_filter_selectp;
#endif
/* Colorspace support; structures used in png_struct, png_info and in internal
* functions to hold and communicate information about the color space.
*
@@ -751,8 +756,9 @@ struct png_struct_def
png_compression_bufferp *zbuffer_end; /* 'next' field of current buffer */
png_uint_32 zbuffer_len; /* Length of data in list */
unsigned int zbuffer_start; /* Bytes written from start */
unsigned int zbuffer_filters;/*Filters for this row */
# ifdef PNG_SELECT_FILTER_METHODICALLY_SUPPORTED
png_voidp zbuffer_select;
png_filter_selectp zbuffer_select;
# endif /* SELECT_FILTER_METHODICALLY */
# endif /* WRITE */
# ifdef PNG_READ_SUPPORTED