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[libpng17] Made transform implementation functions static. This makes the
internal functions called by png_do_{read|write}_transformations static.
On an x86-64 DLL build (Gentoo Linux) this reduces the size of the text
segment of the DLL by 1208 bytes, about 0.6%. It also simplifies
maintenance by removing the declarations from pngpriv.h and allowing
easier changes to the internal interfaces.
This commit is contained in:
John Bowler
committed by
Glenn Randers-Pehrson
Glenn Randers-Pehrson
parent
d45a632529
commit
3adf438f39
107
pngpriv.h
107
pngpriv.h
@@ -1147,32 +1147,7 @@ PNG_INTERNAL_FUNCTION(void,png_read_transform_info,(png_structrp png_ptr,
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png_inforp info_ptr),PNG_EMPTY);
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#endif
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/* These are the functions that do the transformations */
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#ifdef PNG_READ_FILLER_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_read_filler,(png_row_infop row_info,
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png_bytep row, png_uint_32 filler, png_uint_32 flags),PNG_EMPTY);
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#endif
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#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_read_swap_alpha,(png_row_infop row_info,
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png_bytep row),PNG_EMPTY);
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#endif
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#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_write_swap_alpha,(png_row_infop row_info,
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png_bytep row),PNG_EMPTY);
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#endif
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#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_read_invert_alpha,(png_row_infop row_info,
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png_bytep row),PNG_EMPTY);
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#endif
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#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_write_invert_alpha,(png_row_infop row_info,
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png_bytep row),PNG_EMPTY);
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#endif
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/* Shared transform functions, defined in pngtran.c */
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#if defined(PNG_WRITE_FILLER_SUPPORTED) || \
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defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
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PNG_INTERNAL_FUNCTION(void,png_do_strip_channel,(png_row_infop row_info,
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@@ -1192,96 +1167,16 @@ PNG_INTERNAL_FUNCTION(void,png_do_packswap,(png_row_infop row_info,
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png_bytep row),PNG_EMPTY);
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#endif
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#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
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PNG_INTERNAL_FUNCTION(int,png_do_rgb_to_gray,(png_structrp png_ptr,
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png_row_infop row_info, png_bytep row),PNG_EMPTY);
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#endif
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#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_gray_to_rgb,(png_row_infop row_info,
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png_bytep row),PNG_EMPTY);
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#endif
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#ifdef PNG_READ_PACK_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_unpack,(png_row_infop row_info,
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png_bytep row),PNG_EMPTY);
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#endif
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#ifdef PNG_READ_SHIFT_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_unshift,(png_row_infop row_info,
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png_bytep row, png_const_color_8p sig_bits),PNG_EMPTY);
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#endif
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#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
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PNG_INTERNAL_FUNCTION(void,png_do_invert,(png_row_infop row_info,
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png_bytep row),PNG_EMPTY);
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#endif
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#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_scale_16_to_8,(png_row_infop row_info,
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png_bytep row),PNG_EMPTY);
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#endif
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#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_chop,(png_row_infop row_info,
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png_bytep row),PNG_EMPTY);
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#endif
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#ifdef PNG_READ_QUANTIZE_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_quantize,(png_row_infop row_info,
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png_bytep row, png_const_bytep palette_lookup,
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png_const_bytep quantize_lookup),PNG_EMPTY);
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# ifdef PNG_CORRECT_PALETTE_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_correct_palette,(png_structrp png_ptr,
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png_colorp palette, int num_palette),PNG_EMPTY);
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# endif
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#endif
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#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
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PNG_INTERNAL_FUNCTION(void,png_do_bgr,(png_row_infop row_info,
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png_bytep row),PNG_EMPTY);
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#endif
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#ifdef PNG_WRITE_PACK_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_pack,(png_row_infop row_info,
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png_bytep row, png_uint_32 bit_depth),PNG_EMPTY);
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#endif
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#ifdef PNG_WRITE_SHIFT_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_shift,(png_row_infop row_info,
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png_bytep row, png_const_color_8p bit_depth),PNG_EMPTY);
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#endif
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#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
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defined(PNG_READ_ALPHA_MODE_SUPPORTED)
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PNG_INTERNAL_FUNCTION(void,png_do_compose,(png_row_infop row_info,
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png_bytep row, png_structrp png_ptr),PNG_EMPTY);
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#endif
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#ifdef PNG_READ_GAMMA_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_gamma,(png_row_infop row_info,
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png_bytep row, png_structrp png_ptr),PNG_EMPTY);
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#endif
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#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_encode_alpha,(png_row_infop row_info,
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png_bytep row, png_structrp png_ptr),PNG_EMPTY);
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#endif
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#ifdef PNG_READ_EXPAND_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_expand_palette,(png_row_infop row_info,
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png_bytep row, png_const_colorp palette, png_const_bytep trans,
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int num_trans),PNG_EMPTY);
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PNG_INTERNAL_FUNCTION(void,png_do_expand,(png_row_infop row_info,
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png_bytep row, png_const_color_16p trans_color),PNG_EMPTY);
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#endif
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#ifdef PNG_READ_EXPAND_16_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_do_expand_16,(png_row_infop row_info,
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png_bytep row),PNG_EMPTY);
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#endif
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/* The following decodes the appropriate chunks, and does error correction,
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* then calls the appropriate callback for the chunk if it is valid.
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*/
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