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

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Merge Freetype text plugin
2014-08-17 05:20:38 -07:00
/******************************************************************************
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 {
Add system font lookup for mac/windows This changes the font plugin from using a font file to using a specific installed system font, which is searched for on each specific system and associated with the font file. It now uses a font property instead of a path property, and font size has been removed because the font property now handles that. When the module is first loaded, it will build up a list of system fonts in order to be usable by Freetype. It was quite painful to program this because font files can contain multiple localized versions of their face names, and then there was the issue where windows likes to mangle custom style types to the font name. Regardless, it all seems to have worked out pretty well. Minor issues: - Truetype/Opentype fonts sometimes do not automatically have italic and/or bold styles available, it seems that the system applies transformations manually in those cases. We don't do this yet, however, so right now a user might select a font with italic/bold only to discover that italic/bold doesn't always work. Not entirely sure what to do about this yet. There's probably a freetype function to do something like that somehow, This also requires that iconv be used for non-windows systems to be able to look up localized font names within font files. Windows will use the win32 API and code page IDs to translate font names.
2014-08-17 07:13:05 -07:00
char *font_name;
char *font_style;
uint16_t font_size;
uint32_t font_flags;
text-freetype2: Avoid spamming the log When polling the file for changes, if the file doesn't exist, avoid repeating the message over and over again that it couldn't find the file.
2014-08-24 16:59:02 -07:00
bool file_load_failed;
text-freetype2: Fix issues with text file loading
2014-08-24 16:38:37 -07:00
bool from_file;
Merge Freetype text plugin
2014-08-17 05:20:38 -07:00
char *text_file;
wchar_t *text;
time_t m_timestamp;
text-freetype2: Fix file reader occasionally not updating
2017-06-27 03:15:00 -07:00
bool update_file;
Merge Freetype text plugin
2014-08-17 05:20:38 -07:00
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;
(API Change) Remove pointers from all typedefs Typedef pointers are unsafe. If you do: typedef struct bla *bla_t; then you cannot use it as a constant, such as: const bla_t, because that constant will be to the pointer itself rather than to the underlying data. I admit this was a fundamental mistake that must be corrected. All typedefs that were pointer types will now have their pointers removed from the type itself, and the pointers will be used when they are actually used as variables/parameters/returns instead. This does not break ABI though, which is pretty nice.
2014-09-25 17:44:05 -07:00
gs_texture_t *tex;
Merge Freetype text plugin
2014-08-17 05:20:38 -07:00
struct glyph_info *cacheglyphs[num_cache_slots];
FT_Face font_face;
text-freetype2: Use GS_A8 type glyphs texture Since glyphs are rendered by FT as 8-bit gray levels bitmaps, it would be a waste of memory to cache glyphs in a RGBA texture.
2016-03-10 05:06:35 -08:00
uint8_t *texbuf;
(API Change) Remove pointers from all typedefs Typedef pointers are unsafe. If you do: typedef struct bla *bla_t; then you cannot use it as a constant, such as: const bla_t, because that constant will be to the pointer itself rather than to the underlying data. I admit this was a fundamental mistake that must be corrected. All typedefs that were pointer types will now have their pointers removed from the type itself, and the pointers will be used when they are actually used as variables/parameters/returns instead. This does not break ABI though, which is pretty nice.
2014-09-25 17:44:05 -07:00
gs_vertbuffer_t *vbuf;
Merge Freetype text plugin
2014-08-17 05:20:38 -07:00
(API Change) Remove pointers from all typedefs Typedef pointers are unsafe. If you do: typedef struct bla *bla_t; then you cannot use it as a constant, such as: const bla_t, because that constant will be to the pointer itself rather than to the underlying data. I admit this was a fundamental mistake that must be corrected. All typedefs that were pointer types will now have their pointers removed from the type itself, and the pointers will be used when they are actually used as variables/parameters/returns instead. This does not break ABI though, which is pretty nice.
2014-09-25 17:44:05 -07:00
gs_effect_t *draw_effect;
Merge Freetype text plugin
2014-08-17 05:20:38 -07:00
bool outline_text, drop_shadow;
bool log_mode, word_wrap;
text-freetype2: Add chat line count property Allows the ability to choose the number of chat lines when using the "Chat log mode" feature. Closes obsproject/obs-studio#1280
2018-04-29 04:11:26 -07:00
uint32_t log_lines;
Merge Freetype text plugin
2014-08-17 05:20:38 -07:00
(API Change) Remove pointers from all typedefs Typedef pointers are unsafe. If you do: typedef struct bla *bla_t; then you cannot use it as a constant, such as: const bla_t, because that constant will be to the pointer itself rather than to the underlying data. I admit this was a fundamental mistake that must be corrected. All typedefs that were pointer types will now have their pointers removed from the type itself, and the pointers will be used when they are actually used as variables/parameters/returns instead. This does not break ABI though, which is pretty nice.
2014-09-25 17:44:05 -07:00
obs_source_t *src;
Merge Freetype text plugin
2014-08-17 05:20:38 -07:00
};
extern FT_Library ft2_lib;
(API Change) Remove pointers from all typedefs Typedef pointers are unsafe. If you do: typedef struct bla *bla_t; then you cannot use it as a constant, such as: const bla_t, because that constant will be to the pointer itself rather than to the underlying data. I admit this was a fundamental mistake that must be corrected. All typedefs that were pointer types will now have their pointers removed from the type itself, and the pointers will be used when they are actually used as variables/parameters/returns instead. This does not break ABI though, which is pretty nice.
2014-09-25 17:44:05 -07:00
static void *ft2_source_create(obs_data_t *settings, obs_source_t *source);
Merge Freetype text plugin
2014-08-17 05:20:38 -07:00
static void ft2_source_destroy(void *data);
(API Change) Remove pointers from all typedefs Typedef pointers are unsafe. If you do: typedef struct bla *bla_t; then you cannot use it as a constant, such as: const bla_t, because that constant will be to the pointer itself rather than to the underlying data. I admit this was a fundamental mistake that must be corrected. All typedefs that were pointer types will now have their pointers removed from the type itself, and the pointers will be used when they are actually used as variables/parameters/returns instead. This does not break ABI though, which is pretty nice.
2014-09-25 17:44:05 -07:00
static void ft2_source_update(void *data, obs_data_t *settings);
static void ft2_source_render(void *data, gs_effect_t *effect);
Merge Freetype text plugin
2014-08-17 05:20:38 -07:00
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);
(API Change) Pass data to get_properties when possible
2014-09-29 08:36:13 -07:00
static obs_properties_t *ft2_source_properties(void *unused);
Merge Freetype text plugin
2014-08-17 05:20:38 -07:00
(API Change) libobs: Pass type data to get_name callbacks API changed from: obs_source_info::get_name(void) obs_output_info::get_name(void) obs_encoder_info::get_name(void) obs_service_info::get_name(void) API changed to: obs_source_info::get_name(void *type_data) obs_output_info::get_name(void *type_data) obs_encoder_info::get_name(void *type_data) obs_service_info::get_name(void *type_data) This allows the type data to be used when getting the name of the object (useful for plugin wrappers primarily). NOTE: Though a parameter was added, this is backward-compatible with older plugins due to calling convention. The new parameter will simply be ignored by older plugins, and the stack (if used) will be cleaned up by the caller.
2015-09-16 01:30:51 -07:00
static const char *ft2_source_get_name(void *unused);
Merge Freetype text plugin
2014-08-17 05:20:38 -07:00
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);