diff options
Diffstat (limited to '')
| -rw-r--r-- | libskrift.h | 111 |
1 files changed, 93 insertions, 18 deletions
diff --git a/libskrift.h b/libskrift.h index 8745e09..93adb79 100644 --- a/libskrift.h +++ b/libskrift.h @@ -22,6 +22,49 @@ typedef struct libskrift_font LIBSKRIFT_FONT; typedef uint_least32_t libskrift_codepoint_t; +enum libskrift_format { + LIBSKRIFT_RAW, + LIBSKRIFT_R8G8B8, + LIBSKRIFT_X8R8G8B8, + LIBSKRIFT_A8R8G8B8, + LIBSKRIFT_R8G8B8A8, + LIBSKRIFT_R16G16B16, + LIBSKRIFT_X16R16G16B16, + LIBSKRIFT_A16R16G16B16, + LIBSKRIFT_R16G16B16A16, + LIBSKRIFT_R32G32B32, + LIBSKRIFT_X32R32G32B32, + LIBSKRIFT_A32R32G32B32, + LIBSKRIFT_R32G32B32A32, + LIBSKRIFT_R64G64B64, + LIBSKRIFT_X64R64G64B64, + LIBSKRIFT_A64R64G64B64, + LIBSKRIFT_R64G64B64A64, + LIBSKRIFT_RGB_FLOAT, + LIBSKRIFT_ARGB_FLOAT, + LIBSKRIFT_RGBA_FLOAT, + LIBSKRIFT_RGB_DOUBLE, + LIBSKRIFT_ARGB_DOUBLE, + LIBSKRIFT_RGBA_DOUBLE, + LIBSKRIFT_RGB_LONG_DOUBLE, + LIBSKRIFT_ARGB_LONG_DOUBLE, + LIBSKRIFT_RGBA_LONG_DOUBLE +}; + +enum libskrift_endian { + LIBSKRIFT_HOST_PIXEL, + LIBSKRIFT_NETWORK_PIXEL, + LIBSKRIFT_REVERSE_NETWORK_PIXEL, + LIBSKRIFT_HOST_SUBPIXEL, + LIBSKRIFT_NETWORK_SUBPIXEL, + LIBSKRIFT_REVERSE_NETWORK_SUBPIXEL + +#define LIBSKRIFT_BE_PIXEL LIBSKRIFT_NETWORK_PIXEL +#define LIBSKRIFT_BE_SUBPIXEL LIBSKRIFT_NETWORK_SUBPIXEL +#define LIBSKRIFT_LE_PIXEL LIBSKRIFT_REVERSE_NETWORK_PIXEL +#define LIBSKRIFT_LE_SUBPIXEL LIBSKRIFT_REVERSE_NETWORK_SUBPIXEL +}; + enum libskrift_subpixel_order { LIBSKRIFT_OTHER, /* LIBSKRIFT_NONE */ LIBSKRIFT_RGB, @@ -43,23 +86,24 @@ enum libskrift_hinting { LIBSKRIFT_FULL = 100 }; -#define LIBSKRIFT_CORRECT_GAMMA 0x00000001U -#define LIBSKRIFT_REMOVE_GAMMA 0x00000002U -#define LIBSKRIFT_Y_INCREASES_UPWARDS 0x00000004U /* SFT_DOWNWARD_Y otherwise */ -#define LIBSKRIFT_FLIP_TEXT 0x00000008U -#define LIBSKRIFT_MIRROR_TEXT 0x00000010U -#define LIBSKRIFT_MIRROR_CHARS 0x00000020U -#define LIBSKRIFT_TRANSPOSE_TEXT 0x00000040U -#define LIBSKRIFT_TRANSPOSE_CHARS 0x00000080U -#define LIBSKRIFT_NO_LIGATURES 0x00000100U -#define LIBSKRIFT_ADVANCE_TO_GRID 0x00000200U -#define LIBSKRIFT_REGRESS_TO_GRID 0x00000400U /* Combine with LIBSKRIFT_ADVANCE_TO_GRID for closest alternative */ -#define LIBSKRIFT_USE_SUBPIXEL_GRID 0x00000800U -#define LIBSKRIFT_VERTICAL_TEXT 0x00001000U -#define LIBSKRIFT_AUTOHINTING 0x00002000U /* Use autohinter even if hint information exists */ -#define LIBSKRIFT_NO_AUTOHINTING 0x00004000U /* Use autohinter if no hint information exist */ -#define LIBSKRIFT_AUTOKERNING 0x00008000U /* Use autokerner even if kerning information exists */ -#define LIBSKRIFT_NO_AUTOKERNING 0x00010000U /* Use autokerner if no kerning information exist */ +#define LIBSKRIFT_REMOVE_GAMMA 0x00000001L +#define LIBSKRIFT_Y_INCREASES_UPWARDS 0x00000002L /* SFT_DOWNWARD_Y otherwise */ +#define LIBSKRIFT_FLIP_TEXT 0x00000004L +#define LIBSKRIFT_MIRROR_TEXT 0x00000008L +#define LIBSKRIFT_MIRROR_CHARS 0x00000010L +#define LIBSKRIFT_TRANSPOSE_TEXT 0x00000020L +#define LIBSKRIFT_TRANSPOSE_CHARS 0x00000040L +#define LIBSKRIFT_NO_LIGATURES 0x00000080L +#define LIBSKRIFT_ADVANCE_CHAR_TO_GRID 0x00000100L +#define LIBSKRIFT_REGRESS_CHAR_TO_GRID 0x00000200L /* Combine with LIBSKRIFT_ADVANCE_CHAR_TO_GRID for closest alternative */ +#define LIBSKRIFT_ADVANCE_WORD_TO_GRID 0x00000400L +#define LIBSKRIFT_REGRESS_WORD_TO_GRID 0x00000800L /* Combine with LIBSKRIFT_ADVANCE_WORD_TO_GRID for closest alternative */ +#define LIBSKRIFT_USE_SUBPIXEL_GRID 0x00001000L +#define LIBSKRIFT_VERTICAL_TEXT 0x00002000L +#define LIBSKRIFT_AUTOHINTING 0x00004000L /* Use autohinter even if hint information exists */ +#define LIBSKRIFT_NO_AUTOHINTING 0x00008000L /* Use autohinter if no hint information exist */ +#define LIBSKRIFT_AUTOKERNING 0x00010000L /* Use autokerner even if kerning information exists */ +#define LIBSKRIFT_NO_AUTOKERNING 0x00020000L /* Use autokerner if no kerning information exist */ struct libskrift_rendering { int struct_version; @@ -97,6 +141,25 @@ struct libskrift_saved_grapheme { size_t len; }; +struct libskrift_image { + enum libskrift_format format; + enum libskrift_endian endian; + int premultiplied; + uint16_t width; + uint16_t height; + void (*preprocess)(struct libskrift_image *image, size_t x, size_t y, size_t width, size_t height); + void (*postprocess)(struct libskrift_image *image, size_t x, size_t y, size_t width, size_t height); + void *image; +}; + +struct libskrift_colour { + double opacity; /* [0, 1] */ + double alpha; /* [0, .opacity] */ + double red; /* [0, .alpha] */ + double green; /* [0, .alpha] */ + double blue; /* [0, .alpha] */ +}; + #define LIBSKRIFT_DEFAULT_RENDERING {\ .struct_version = LIBSKRIFT_RENDERING_STRUCT_VERSION,\ @@ -183,6 +246,18 @@ ssize_t libskrift_get_cluster_glyph(LIBSKRIFT_CONTEXT *, const char *, struct li double, double, struct libskrift_glyph **); _LIBSKRIFT_GCC_ONLY(__attribute__((__nonnull__))) -int libskrift_merge_glyphs(LIBSKRIFT_CONTEXT *, struct libskrift_glyph *, struct libskrift_glyph *, struct libskrift_glyph **); +int libskrift_merge_glyphs(LIBSKRIFT_CONTEXT *, const struct libskrift_glyph *, const struct libskrift_glyph *, + struct libskrift_glyph **); + +_LIBSKRIFT_GCC_ONLY(__attribute__((__nonnull__(1, 2, 6)))) +int libskrift_apply_glyph(LIBSKRIFT_CONTEXT *, const struct libskrift_glyph *, const struct libskrift_colour *, + int16_t, int16_t, struct libskrift_image *); + + +_LIBSKRIFT_GCC_ONLY(__attribute__((__nonnull__))) +void libskrift_srgb_preprocess(struct libskrift_image *, size_t, size_t, size_t, size_t); + +_LIBSKRIFT_GCC_ONLY(__attribute__((__nonnull__))) +void libskrift_srgb_postprocess(struct libskrift_image *, size_t, size_t, size_t, size_t); #endif |