obs-studio/plugins/text-freetype2/text-freetype2.h

95 lines
2.7 KiB
C

/******************************************************************************
Copyright (C) 2014 by Nibbles
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 2 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/>.
******************************************************************************/
#include <obs-module.h>
#include <ft2build.h>
#define num_cache_slots 65535
#define src_glyph srcdata->cacheglyphs[glyph_index]
struct glyph_info {
float u, v, u2, v2;
int32_t w, h, xoff, yoff;
int32_t xadv;
};
struct ft2_source {
char *font_name;
char *font_style;
uint16_t font_size;
uint32_t font_flags;
bool file_load_failed;
bool from_file;
char *text_file;
wchar_t *text;
time_t m_timestamp;
uint64_t last_checked;
uint32_t cx, cy, max_h, custom_width;
uint32_t texbuf_x, texbuf_y;
uint32_t color[2];
uint32_t *colorbuf;
int32_t cur_scroll, scroll_speed;
gs_texture_t *tex;
struct glyph_info *cacheglyphs[num_cache_slots];
FT_Face font_face;
uint32_t *texbuf;
gs_vertbuffer_t *vbuf;
gs_effect_t *draw_effect;
bool outline_text, drop_shadow;
bool log_mode, word_wrap;
obs_source_t *src;
};
extern FT_Library ft2_lib;
static void *ft2_source_create(obs_data_t *settings, obs_source_t *source);
static void ft2_source_destroy(void *data);
static void ft2_source_update(void *data, obs_data_t *settings);
static void ft2_source_render(void *data, gs_effect_t *effect);
static void ft2_video_tick(void *data, float seconds);
void draw_outlines(struct ft2_source *srcdata);
void draw_drop_shadow(struct ft2_source *srcdata);
static uint32_t ft2_source_get_width(void *data);
static uint32_t ft2_source_get_height(void *data);
static obs_properties_t *ft2_source_properties(void *unused);
static const char *ft2_source_get_name(void);
uint32_t get_ft2_text_width(wchar_t *text, struct ft2_source *srcdata);
time_t get_modified_timestamp(char *filename);
void load_text_from_file(struct ft2_source *srcdata, const char *filename);
void read_from_end(struct ft2_source *srcdata, const char *filename);
void cache_standard_glyphs(struct ft2_source *srcdata);
void cache_glyphs(struct ft2_source *srcdata, wchar_t *cache_glyphs);
void set_up_vertex_buffer(struct ft2_source *srcdata);
void fill_vertex_buffer(struct ft2_source *srcdata);