95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
/******************************************************************************
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Copyright (C) 2014 by Nibbles
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#include <obs-module.h>
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#include <ft2build.h>
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#define num_cache_slots 65535
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#define src_glyph srcdata->cacheglyphs[glyph_index]
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struct glyph_info {
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float u, v, u2, v2;
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int32_t w, h, xoff, yoff;
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int32_t xadv;
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};
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struct ft2_source {
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char *font_name;
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char *font_style;
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uint16_t font_size;
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uint32_t font_flags;
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bool file_load_failed;
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bool from_file;
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char *text_file;
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wchar_t *text;
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time_t m_timestamp;
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uint64_t last_checked;
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uint32_t cx, cy, max_h, custom_width;
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uint32_t texbuf_x, texbuf_y;
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uint32_t color[2];
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uint32_t *colorbuf;
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int32_t cur_scroll, scroll_speed;
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gs_texture_t *tex;
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struct glyph_info *cacheglyphs[num_cache_slots];
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FT_Face font_face;
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uint32_t *texbuf;
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gs_vertbuffer_t *vbuf;
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gs_effect_t *draw_effect;
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bool outline_text, drop_shadow;
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bool log_mode, word_wrap;
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obs_source_t *src;
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};
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extern FT_Library ft2_lib;
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static void *ft2_source_create(obs_data_t *settings, obs_source_t *source);
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static void ft2_source_destroy(void *data);
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static void ft2_source_update(void *data, obs_data_t *settings);
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static void ft2_source_render(void *data, gs_effect_t *effect);
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static void ft2_video_tick(void *data, float seconds);
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void draw_outlines(struct ft2_source *srcdata);
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void draw_drop_shadow(struct ft2_source *srcdata);
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static uint32_t ft2_source_get_width(void *data);
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static uint32_t ft2_source_get_height(void *data);
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static obs_properties_t *ft2_source_properties(void *unused);
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static const char *ft2_source_get_name(void);
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uint32_t get_ft2_text_width(wchar_t *text, struct ft2_source *srcdata);
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time_t get_modified_timestamp(char *filename);
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void load_text_from_file(struct ft2_source *srcdata, const char *filename);
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void read_from_end(struct ft2_source *srcdata, const char *filename);
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void cache_standard_glyphs(struct ft2_source *srcdata);
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void cache_glyphs(struct ft2_source *srcdata, wchar_t *cache_glyphs);
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void set_up_vertex_buffer(struct ft2_source *srcdata);
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void fill_vertex_buffer(struct ft2_source *srcdata);
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