src/sfnt/pngshim.h


Log

Author Commit Date CI Message
Werner Lemberg 1c6fd994 2016-11-06T12:37:55 [sfnt] Improve FT_LOAD_BITMAP_METRICS_ONLY for `sbix' format. It's unavoidable to call the PNG engine, but to get the metrics it is sufficient to read the PNG image's header only. * src/sfnt/pngshim.c (Load_SBit_Png): Add argument to control the allocation of the glyph slot. * src/sfnt/pngshim.h: Updated. * src/sfnt/ttsbit.c (tt_sbit_decoder_load_png, tt_face_load_sbix_image, tt_face_load_sbit_image): Updated.
Werner Lemberg 9adeab64 2016-01-13T11:54:10 Update copyright year.
Werner Lemberg 37412ff9 2016-01-12T21:37:13 Don't use macro names that contain `__' [1/2]. Such macro names are reserved for both C and C++. */*: Replace macros of the form `__XXX_H__' with `XXX_H_'.
Werner Lemberg f57fc59e 2015-01-17T20:41:43 Run `src/tools/update-copyright'.
Werner Lemberg f796cf6c 2015-01-17T20:11:10 Normalize copyright notice format.
Werner Lemberg 01705395 2013-07-18T13:13:12 [sfnt] Add support for Apple's `sbix' color bitmap table. * include/freetype/internal/tttypes.h (TT_SBit_MetricsRec): Widen fields to FT_Short and FT_UShort, respectively. (TT_SBitTableType): New enumeration. (TT_FaceRec): Add `sbit_table_type' field. * include/freetype/tttags.h (TTAG_sbix): New macro. * src/sfnt/pngshim.c (Load_SBit_Png): Pass a more generic FT_GlyphSlot argument instead FT_Bitmap. Add flag to control map and metrics handling. Update all users. * src/sfnt/ttsbit.c: Include `ttmtx.h'. (tt_face_load_eblc): Renamed to... (tt_face_load_sbit): This. Handlic `sbix' bitmaps. (tt_face_free_eblc): Renamed to... (tt_face_load_sbit): This. Updated. (tt_face_load_strike_metrics): Handle `sbix' bitmaps. (tt_face_load_sbix_image): New function. (tt_sbit_decoder_alloc_bitmap, tt_sbit_decoder_load_image, tt_sbit_decoder_load_byte_aligned, tt_sbit_decoder_load_bit_aligned, tt_sbit_decoder_load_compound, tt_sbit_decoder_load_png, tt_sbit_decoder_load_image, tt_sbit_decoder_load_bitmap): Don't pass and handle load flags. (tt_sbit_decoder_load_bitmap) [!FT_CONFIG_OPTION_USE_PNG]: Better handle formats 17-19. Move color to grayscale conversion to... (tt_face_load_sbit_image): Here. Handle `sbix' bitmaps. * src/sfnt/pngshim.h: Updated. * src/sfnt/ttsbit.h: Updated. * src/sfnt/sfdriver.c: Updated.
Behdad Esfahbod 760d342d 2013-05-29T11:36:18 Add support for color embedded bitmaps (eg. color emoji). A new load flag, FT_LOAD_COLOR, makes FreeType load color embedded-bitmaps, following this draft specification https://color-emoji.googlecode.com/git/specification/v1.html which defines two new SFNT tables, `CBDT' and `CBLC' (named and modeled after `EBDT' and `EBLC', respectively). The color bitmaps are stored in the new FT_PIXEL_MODE_BGRA format to represent BGRA pre-multiplied sRGB images. If PNG support is available, PNG color images as defined in the same proposed specification are supported also. Note that color bitmaps are converted to grayscale if client didn't ask for color. * builds/unix/configure.raw: Search for libpng. Add `--without-png' option. * devel/ftoption.h, include/freetype/config/ftoption.h (FT_CONFIG_OPTION_USE_PNG): New macro. * include/freetype/freetype.h (FT_LOAD_COLOR): New load flag. * include/freetype/ftimage.h (FT_Pixel_Mode): Add `FT_PIXEL_MODE_BGRA'. * include/freetype/tttags.h (TTAG_CBDT, TTAG_CBLC): New tags. * src/base/ftbitmap.c (FT_Bitmap_Embolden): Updated. (ft_gray_for_premultiplied_srgb_bgra): New function. (FT_Bitmap_Convert): Handle FT_PIXEL_MODE_BGRA. * src/sfnt/pngshim.c, src/sfnt/pngshim.h: New files. * src/sfnt/sfnt.c: Include `pngshim.c'. * src/sfnt/ttsbit.c: Include FT_BITMAP_H and `pngshim.h' (tt_face_load_eblc): Load `CBLC'. (tt_sbit_decoder_init): Load `CBDT'. (tt_sbit_decoder_alloc_bitmap): Pass load flags to select between color and grayscale bitmaps. Set `num_grays'. This is used by `ftview' to choose the blending algorithm. (tt_sbit_decoder_load_byte_aligned, tt_sbit_decoder_load_bit_aligned, tt_sbit_decoder_load_compound, tt_sbit_decoder_load_image): Pass load flag. s/write/pwrite/. Don't call `tt_sbit_decoder_alloc_bitmap'. Updated. (tt_sbit_decoder_load_png) [FT_CONFIG_OPTION_USE_PNG]: New function. (tt_sbit_decoder_load_bitmap): Pass load flag. Handle new glyph formats 17, 18, and 19. Call `tt_sbit_decoder_alloc_bitmap'. Flatten color bitmaps if necessary. (tt_face_load_sbit_image): Updated. * src/sfnt/rules.mk (SFNT_DRV_SRC): Add `pngshim.c'. * docs/CHANGES: Updated.