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blitbuffer.h
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blitbuffer.h
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/*
KOReader: blitbuffer implementation for jit-disabled platforms
Copyright (C) 2011 Hans-Werner Hilse <[email protected]>
2017 Huang Xin <[email protected]>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _BLITBUFFER_H
#define _BLITBUFFER_H
#include <stddef.h>
#include <stdint.h>
// Symbol visibility
#define DLL_PUBLIC __attribute__((visibility("default")))
#define DLL_LOCAL __attribute__((visibility("hidden")))
// In C++, restrict is a compiler extension. Choose the syntax supported by GCC, Clang & MSVC.
#ifdef __cplusplus
# define restrict __restrict
#endif
// Helper macros
#define MASK_INVERSE 0x02
#define SHIFT_INVERSE 1
#define MASK_ROTATED 0x0C
#define SHIFT_ROTATED 2
#define MASK_TYPE 0xF0
#define SHIFT_TYPE 4
#define TYPE_BB4 0
#define TYPE_BB8 1
#define TYPE_BB8A 2
#define TYPE_BBRGB16 3
#define TYPE_BBRGB24 4
#define TYPE_BBRGB32 5
#define GET_BB_INVERSE(bb) ((MASK_INVERSE & bb->config) >> SHIFT_INVERSE)
#define GET_BB_ROTATION(bb) ((MASK_ROTATED & bb->config) >> SHIFT_ROTATED)
#define GET_BB_TYPE(bb) (((MASK_TYPE & bb->config) >> SHIFT_TYPE))
// Types
typedef struct Color8 {
uint8_t a;
} Color8;
typedef struct Color8A {
uint8_t a;
uint8_t alpha;
} Color8A;
typedef struct ColorRGB16 {
uint16_t v;
} ColorRGB16;
typedef struct ColorRGB24 {
uint8_t r;
uint8_t g;
uint8_t b;
} ColorRGB24;
typedef struct ColorRGB32 {
uint8_t r;
uint8_t g;
uint8_t b;
uint8_t alpha;
} ColorRGB32;
typedef struct BlitBuffer {
unsigned int w;
unsigned int pixel_stride; // nb of pixels from the start of a line to the start of next line
unsigned int h;
size_t stride; // nb of bytes from the start of a line to the start of next line
uint8_t * restrict data;
uint8_t config;
} BlitBuffer;
typedef struct BlitBuffer8 {
unsigned int w;
unsigned int pixel_stride;
unsigned int h;
size_t stride;
Color8 * restrict data;
uint8_t config;
} BlitBuffer8;
typedef struct BlitBuffer8A {
unsigned int w;
unsigned int pixel_stride;
unsigned int h;
size_t stride;
Color8A * restrict data;
uint8_t config;
} BlitBuffer8A;
typedef struct BlitBufferRGB16 {
unsigned int w;
unsigned int pixel_stride;
unsigned int h;
size_t stride;
ColorRGB16 * restrict data;
uint8_t config;
} BlitBufferRGB16;
typedef struct BlitBufferRGB24 {
unsigned int w;
unsigned int pixel_stride;
unsigned int h;
size_t stride;
ColorRGB24 * restrict data;
uint8_t config;
} BlitBufferRGB24;
typedef struct BlitBufferRGB32 {
unsigned int w;
unsigned int pixel_stride;
unsigned int h;
size_t stride;
ColorRGB32 * restrict data;
uint8_t config;
} BlitBufferRGB32;
DLL_PUBLIC void BB_fill(BlitBuffer * restrict bb, uint8_t v);
DLL_PUBLIC void BB_fill_rect(BlitBuffer * restrict bb, unsigned int x, unsigned int y, unsigned int w, unsigned int h, uint8_t v);
DLL_PUBLIC void BB_blend_rect(BlitBuffer * restrict bb, unsigned int x, unsigned int y, unsigned int w, unsigned int h, Color8A * restrict color);
DLL_PUBLIC void BB_invert_rect(BlitBuffer * restrict bb, unsigned int x, unsigned int y, unsigned int w, unsigned int h);
DLL_PUBLIC void BB_blit_to_BB8(const BlitBuffer * restrict src, BlitBuffer * restrict dst,
unsigned int dest_x, unsigned int dest_y, unsigned int offs_x, unsigned int offs_y, unsigned int w, unsigned int h);
DLL_PUBLIC void BB_dither_blit_to_BB8(const BlitBuffer * restrict src, BlitBuffer * restrict dst,
unsigned int dest_x, unsigned int dest_y, unsigned int offs_x, unsigned int offs_y, unsigned int w, unsigned int h);
DLL_PUBLIC void BB_blit_to_BB8A(const BlitBuffer * restrict src, BlitBuffer * restrict dst,
unsigned int dest_x, unsigned int dest_y, unsigned int offs_x, unsigned int offs_y, unsigned int w, unsigned int h);
DLL_PUBLIC void BB_blit_to_BB16(const BlitBuffer * restrict src, BlitBuffer * restrict dst,
unsigned int dest_x, unsigned int dest_y, unsigned int offs_x, unsigned int offs_y, unsigned int w, unsigned int h);
DLL_PUBLIC void BB_blit_to_BB24(const BlitBuffer * restrict src, BlitBuffer * restrict dst,
unsigned int dest_x, unsigned int dest_y, unsigned int offs_x, unsigned int offs_y, unsigned int w, unsigned int h);
DLL_PUBLIC void BB_blit_to_BB32(const BlitBuffer * restrict src, BlitBuffer * restrict dst,
unsigned int dest_x, unsigned int dest_y, unsigned int offs_x, unsigned int offs_y, unsigned int w, unsigned int h);
DLL_PUBLIC void BB_blit_to(const BlitBuffer * restrict source, BlitBuffer * restrict dest, unsigned int dest_x, unsigned int dest_y,
unsigned int offs_x, unsigned int offs_y, unsigned int w, unsigned int h);
DLL_PUBLIC void BB_dither_blit_to(const BlitBuffer * restrict source, BlitBuffer * restrict dest, unsigned int dest_x, unsigned int dest_y,
unsigned int offs_x, unsigned int offs_y, unsigned int w, unsigned int h);
DLL_PUBLIC void BB_add_blit_from(BlitBuffer * restrict dest, const BlitBuffer * restrict source, unsigned int dest_x, unsigned int dest_y,
unsigned int offs_x, unsigned int offs_y, unsigned int w, unsigned int h, uint8_t alpha);
DLL_PUBLIC void BB_alpha_blit_from(BlitBuffer * restrict dest, const BlitBuffer * restrict source, unsigned int dest_x, unsigned int dest_y,
unsigned int offs_x, unsigned int offs_y, unsigned int w, unsigned int h);
DLL_PUBLIC void BB_dither_alpha_blit_from(BlitBuffer * restrict dest, const BlitBuffer * restrict source, unsigned int dest_x, unsigned int dest_y,
unsigned int offs_x, unsigned int offs_y, unsigned int w, unsigned int h);
DLL_PUBLIC void BB_pmulalpha_blit_from(BlitBuffer * restrict dest, const BlitBuffer * restrict source, unsigned int dest_x, unsigned int dest_y,
unsigned int offs_x, unsigned int offs_y, unsigned int w, unsigned int h);
DLL_PUBLIC void BB_dither_pmulalpha_blit_from(BlitBuffer * restrict dest, const BlitBuffer * restrict source, unsigned int dest_x, unsigned int dest_y,
unsigned int offs_x, unsigned int offs_y, unsigned int w, unsigned int h);
DLL_PUBLIC void BB_invert_blit_from(BlitBuffer * restrict dest, const BlitBuffer * restrict source, unsigned int dest_x, unsigned int dest_y,
unsigned int offs_x, unsigned int offs_y, unsigned int w, unsigned int h);
DLL_PUBLIC void BB_color_blit_from(BlitBuffer * restrict dest, const BlitBuffer * restrict source, unsigned int dest_x, unsigned int dest_y,
unsigned int offs_x, unsigned int offs_y, unsigned int w, unsigned int h, Color8A * restrict color);
DLL_PUBLIC void BB_paint_rounded_corner(BlitBuffer * restrict bb, unsigned int off_x, unsigned int off_y, unsigned int w, unsigned int h,
unsigned int bw, unsigned int r, uint8_t c);
#endif