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/*
* Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
*
* This file is part of libass.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef LIBASS_BITMAP_H
#define LIBASS_BITMAP_H
#include <ft2build.h>
#include FT_GLYPH_H
#include "ass.h"
typedef struct ass_synth_priv {
int tmp_w, tmp_h;
unsigned *tmp;
int g_r;
int g_w;
double *g0;
unsigned *g;
unsigned *gt2;
double radius;
} ASS_SynthPriv;
ASS_SynthPriv *ass_synth_init(double);
void ass_synth_done(ASS_SynthPriv *priv);
typedef struct {
int left, top;
int w, h; // width, height
int stride;
unsigned char *buffer; // h * stride buffer
unsigned char *buffer_ptr; // unaligned pointer (for free())
} Bitmap;
Bitmap *outline_to_bitmap(ASS_Library *library, FT_Library ftlib,
FT_Outline *outline, int bord);
Bitmap *alloc_bitmap(int w, int h);
/**
* \brief perform glyph rendering
* \param glyph original glyph
* \param outline_glyph "border" glyph, produced from original by FreeType's glyph stroker
* \param bm_g out: pointer to the bitmap of original glyph is returned here
* \param bm_o out: pointer to the bitmap of outline (border) glyph is returned here
* \param bm_g out: pointer to the bitmap of glyph shadow is returned here
* \param be 1 = produces blurred bitmaps, 0 = normal bitmaps
* \param border_visible whether border is visible if border_style is 3
*/
int outline_to_bitmap3(ASS_Library *library, ASS_SynthPriv *priv_blur,
FT_Library ftlib, FT_Outline *outline, FT_Outline *border,
Bitmap **bm_g, Bitmap **bm_o, Bitmap **bm_s,
int be, double blur_radius, FT_Vector shadow_offset,
int border_style, int border_visible);
void ass_free_bitmap(Bitmap *bm);
void ass_gauss_blur(unsigned char *buffer, unsigned *tmp2,
int width, int height, int stride,
unsigned *m2, int r, int mwidth);
void be_blur_c(uint8_t *buf, intptr_t w,
intptr_t h, intptr_t stride,
uint16_t *tmp);
void add_bitmaps_c(uint8_t *dst, intptr_t dst_stride,
uint8_t *src, intptr_t src_stride,
intptr_t height, intptr_t width);
void sub_bitmaps_c(uint8_t *dst, intptr_t dst_stride,
uint8_t *src, intptr_t src_stride,
intptr_t height, intptr_t width);
void restride_bitmap_c(uint8_t *dst, intptr_t dst_stride,
uint8_t *src, intptr_t src_stride,
intptr_t width, intptr_t height);
void mul_bitmaps_c(uint8_t *dst, intptr_t dst_stride,
uint8_t *src1, intptr_t src1_stride,
uint8_t *src2, intptr_t src2_stride,
intptr_t w, intptr_t h);
void shift_bitmap(Bitmap *bm, int shift_x, int shift_y);
void fix_outline(Bitmap *bm_g, Bitmap *bm_o);
void resize_tmp(ASS_SynthPriv *priv, int w, int h);
int generate_tables(ASS_SynthPriv *priv, double radius);
Bitmap *copy_bitmap(const Bitmap *src);
#endif /* LIBASS_BITMAP_H */
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