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[libpng15] New png_struct member png_ptr->old_prev_row

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Mans Rullgard 2011-10-17 16:52:19 -05:00 committed by Glenn Randers-Pehrson
parent c9e27d026d
commit 1c42276a39
3 changed files with 11 additions and 6 deletions
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2
pngread.c
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@ -1038,7 +1038,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr,
png_free(png_ptr, png_ptr->zbuf);
png_free(png_ptr, png_ptr->big_row_buf);
png_free(png_ptr, png_ptr->prev_row);
png_free(png_ptr, png_ptr->big_prev_row);
png_free(png_ptr, png_ptr->chunkdata);
#ifdef PNG_READ_QUANTIZE_SUPPORTED

1
pngrutil.c
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@ -3956,7 +3956,6 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 48);
png_ptr->big_prev_row = (png_bytep)png_malloc(png_ptr, row_bytes + 48);
png_ptr->old_big_row_buf_size = row_bytes + 48;
#ifdef PNG_ALIGNED_MEMORY_SUPPORTED
/* Use 16-byte aligned memory for row_buf with at least 16 bytes

14
pngstruct.h
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@ -105,8 +105,12 @@ struct png_struct_def
png_uint_32 iwidth; /* width of current interlaced row in pixels */
png_uint_32 row_number; /* current row in interlace pass */
png_uint_32 chunk_name; /* PNG_CHUNK() id of current chunk */
png_bytep prev_row; /* buffer to save previous (unfiltered) row */
png_bytep row_buf; /* buffer to save current (unfiltered) row */
png_bytep prev_row; /* buffer to save previous (unfiltered) row.
* This is a pointer into big_prev_row
*/
png_bytep row_buf; /* buffer to save current (unfiltered) row.
* This is a pointer into big_row_buf
*/
png_bytep sub_row; /* buffer to save "sub" row when filtering */
png_bytep up_row; /* buffer to save "up" row when filtering */
png_bytep avg_row; /* buffer to save "avg" row when filtering */
@ -336,9 +340,8 @@ struct png_struct_def
png_unknown_chunk unknown_chunk;
#endif
/* New members added in libpng-1.2.26 */
/* New member added in libpng-1.2.26 */
png_size_t old_big_row_buf_size;
png_size_t old_prev_row_size;
/* New member added in libpng-1.2.30 */
png_charp chunkdata; /* buffer for reading chunk data */
@ -347,5 +350,8 @@ struct png_struct_def
/* New member added in libpng-1.4.0 */
png_uint_32 io_state;
#endif
/* New member added in libpng-1.5.6 */
png_bytep big_prev_row;
};
#endif /* PNGSTRUCT_H */