forked from enlightenment/efl
111 lines
4.0 KiB
C
111 lines
4.0 KiB
C
#ifndef EVAS_COMMON_SOFT16_H
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#define EVAS_COMMON_SOFT16_H
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#include "evas_common.h"
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#include "evas_private.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef always_inline
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#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
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# define always_inline __attribute__((always_inline)) inline
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#else
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# define always_inline inline
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#endif
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#endif
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#define RGB_565_UNPACKED_MASK 0x07e0f81f
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#define RGB_565_UNPACK(rgb) \
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(((rgb) | ((rgb) << 16)) & RGB_565_UNPACKED_MASK)
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#define RGB_565_PACK(rgb) \
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((((rgb) & RGB_565_UNPACKED_MASK) | \
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((rgb) & RGB_565_UNPACKED_MASK) >> 16) & 0xffff)
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#define RGB_565_UNPACKED_BLEND(a, b, alpha) \
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((b) + (a) - ((((b) * (alpha)) >> 5) & RGB_565_UNPACKED_MASK))
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#define RGB_565_UNPACKED_BLEND_UNMUL(a, b, alpha) \
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((b) + ((((a) - (b)) * (alpha)) >> 5))
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#define RGB_565_FROM_COMPONENTS(r, g, b) \
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(((((r) >> 3) & 0x1f) << 11) | \
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((((g) >> 2) & 0x3f) << 5) | \
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(((b) >> 3) & 0x1f))
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static inline int
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_calc_stride(int w)
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{
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int pad;
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pad = w % 4;
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if (!pad) return w;
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else return w + 4 - pad;
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}
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#define IMG_BYTE_SIZE(stride, height, has_alpha) \
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((stride) * (height) * (!(has_alpha) ? 2 : 3))
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typedef struct _Soft16_Image Soft16_Image;
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struct _Soft16_Image
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{
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Image_Entry cache_entry;
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RGBA_Image *source;
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int stride; // pixel stride - likely a multiple of 2
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DATA16 *pixels; // 16bpp pixels rgb565
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DATA8 *alpha; // 8bit alpha mask - optional. points into pixels
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struct
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{
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/* unsigned char have_alpha : 1; // 1 if we have halpha */
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unsigned char free_pixels : 1; // 1 if pixels should be freed
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unsigned char free_alpha : 1; // 1 if alpha mask should be freed
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} flags;
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};
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/**
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* Image (evas_soft16_main.c)
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*/
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EAPI void evas_common_soft16_image_init(void);
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EAPI void evas_common_soft16_image_shutdown(void);
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EAPI Evas_Cache_Image *evas_common_soft16_image_cache_get(void);
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EAPI void soft16_image_draw(Soft16_Image *src, Soft16_Image *dst, RGBA_Draw_Context *dc, int src_region_x, int src_region_y, int src_region_w, int src_region_h, int dst_region_x, int dst_region_y, int dst_region_w, int dst_region_h, int smooth);
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EAPI Soft16_Image *soft16_image_alpha_set(Soft16_Image *im, int have_alpha);
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void soft16_image_draw_unscaled(Soft16_Image *src, Soft16_Image *dst, RGBA_Draw_Context *dc, const Evas_Rectangle sr, const Evas_Rectangle dr, const Evas_Rectangle cr);
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void soft16_image_draw_scaled_sampled(Soft16_Image *src, Soft16_Image *dst, RGBA_Draw_Context *dc, const Evas_Rectangle sr, const Evas_Rectangle dr, const Evas_Rectangle cr);
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/* convert/dither functions */
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void soft16_image_convert_from_rgb(Soft16_Image *im, const DATA32 *src);
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void soft16_image_convert_from_rgba(Soft16_Image *im, const DATA32 *src);
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/**
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* Rectangle (evas_soft16_rectangle.c)
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*/
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EAPI void soft16_rectangle_draw(Soft16_Image *dst, RGBA_Draw_Context *dc, int x, int y, int w, int h);
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/**
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* Polygon (evas_soft16_polygon.c)
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*/
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EAPI void soft16_polygon_draw(Soft16_Image *dst, RGBA_Draw_Context *dc, RGBA_Polygon_Point *points);
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/**
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* Line (evas_soft16_line.c)
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*/
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EAPI void soft16_line_draw(Soft16_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int x1, int y1);
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/**
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* Font (evas_soft16_font.c)
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*/
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EAPI void *soft16_font_glyph_new(void *data, RGBA_Font_Glyph *fg);
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EAPI void soft16_font_glyph_free(void *ext_dat);
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EAPI void soft16_font_glyph_draw(void *data, void *dest, void *context, RGBA_Font_Glyph *fg, int x, int y);
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#ifdef __cplusplus
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}
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#endif
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#endif
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