FFmpeg
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drawtext filter, based on the original vhook/drawtext.c filter by Gustavo Sverzut Barbieri More...
#include "config.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <time.h>
#include <fenv.h>
#include "libavutil/avstring.h"
#include "libavutil/bprint.h"
#include "libavutil/common.h"
#include "libavutil/file.h"
#include "libavutil/eval.h"
#include "libavutil/opt.h"
#include "libavutil/random_seed.h"
#include "libavutil/parseutils.h"
#include "libavutil/timecode.h"
#include "libavutil/time_internal.h"
#include "libavutil/tree.h"
#include "libavutil/lfg.h"
#include "avfilter.h"
#include "drawutils.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
#include <ft2build.h>
#include <FT_FREETYPE_H>
#include <FT_GLYPH_H>
#include <FT_STROKER_H>
#include <FT_ERRORS_H>
Go to the source code of this file.
Data Structures | |
struct | DrawTextContext |
struct | ft_error |
struct | drawtext_function |
Macros | |
#define | OFFSET(x) offsetof(DrawTextContext, x) |
#define | FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
#define | FT_ERROR_START_LIST { |
#define | FT_ERRORDEF(e, v, s) { (e), (s) }, |
#define | FT_ERROR_END_LIST { 0, NULL } }; |
#define | FT_ERRMSG(e) ft_errors[e].err_msg |
Typedefs | |
typedef double(* | eval_func2 )(void *, double a, double b) |
Functions | |
static double | drand (void *opaque, double min, double max) |
AVFILTER_DEFINE_CLASS (drawtext) | |
static int | glyph_cmp (const void *key, const void *b) |
static int | load_glyph (AVFilterContext *ctx, Glyph **glyph_ptr, uint32_t code) |
Load glyphs corresponding to the UTF-32 codepoint code. More... | |
static int | load_font_file (AVFilterContext *ctx, const char *path, int index) |
static int | load_font (AVFilterContext *ctx) |
static int | load_textfile (AVFilterContext *ctx) |
static int | is_newline (uint32_t c) |
static av_cold int | init (AVFilterContext *ctx) |
static int | query_formats (AVFilterContext *ctx) |
static int | glyph_enu_free (void *opaque, void *elem) |
static av_cold void | uninit (AVFilterContext *ctx) |
static int | config_input (AVFilterLink *inlink) |
static int | command (AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags) |
static int | func_pict_type (AVFilterContext *ctx, AVBPrint *bp, char *fct, unsigned argc, char **argv, int tag) |
static int | func_pts (AVFilterContext *ctx, AVBPrint *bp, char *fct, unsigned argc, char **argv, int tag) |
static int | func_frame_num (AVFilterContext *ctx, AVBPrint *bp, char *fct, unsigned argc, char **argv, int tag) |
static int | func_metadata (AVFilterContext *ctx, AVBPrint *bp, char *fct, unsigned argc, char **argv, int tag) |
static int | func_strftime (AVFilterContext *ctx, AVBPrint *bp, char *fct, unsigned argc, char **argv, int tag) |
static int | func_eval_expr (AVFilterContext *ctx, AVBPrint *bp, char *fct, unsigned argc, char **argv, int tag) |
static int | func_eval_expr_int_format (AVFilterContext *ctx, AVBPrint *bp, char *fct, unsigned argc, char **argv, int tag) |
static int | eval_function (AVFilterContext *ctx, AVBPrint *bp, char *fct, unsigned argc, char **argv) |
static int | expand_function (AVFilterContext *ctx, AVBPrint *bp, char **rtext) |
static int | expand_text (AVFilterContext *ctx, char *text, AVBPrint *bp) |
static int | draw_glyphs (DrawTextContext *s, AVFrame *frame, int width, int height, FFDrawColor *color, int x, int y, int borderw) |
static void | update_color_with_alpha (DrawTextContext *s, FFDrawColor *color, const FFDrawColor incolor) |
static void | update_alpha (DrawTextContext *s) |
static int | draw_text (AVFilterContext *ctx, AVFrame *frame, int width, int height) |
static int | filter_frame (AVFilterLink *inlink, AVFrame *frame) |
Variables | |
static const char *const | var_names [] |
static const char *const | fun2_names [] |
static const eval_func2 | fun2 [] |
static const AVOption | drawtext_options [] |
static const struct ft_error | ft_errors [] |
static const struct drawtext_function | functions [] |
static const AVFilterPad | avfilter_vf_drawtext_inputs [] |
static const AVFilterPad | avfilter_vf_drawtext_outputs [] |
AVFilter | ff_vf_drawtext |
drawtext filter, based on the original vhook/drawtext.c filter by Gustavo Sverzut Barbieri
Definition in file vf_drawtext.c.
#define OFFSET | ( | x | ) | offsetof(DrawTextContext, x) |
Definition at line 199 of file vf_drawtext.c.
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
Definition at line 200 of file vf_drawtext.c.
#define FT_ERROR_START_LIST { |
Definition at line 268 of file vf_drawtext.c.
Definition at line 269 of file vf_drawtext.c.
#define FT_ERROR_END_LIST { 0, NULL } }; |
Definition at line 270 of file vf_drawtext.c.
#define FT_ERRMSG | ( | e | ) | ft_errors[e].err_msg |
Referenced by init(), and load_font_file().
Definition at line 103 of file vf_drawtext.c.
enum var_name |
Definition at line 110 of file vf_drawtext.c.
enum expansion_mode |
Enumerator | |
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EXP_NONE | |
EXP_NORMAL | |
EXP_STRFTIME |
Definition at line 131 of file vf_drawtext.c.
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Definition at line 98 of file vf_drawtext.c.
AVFILTER_DEFINE_CLASS | ( | drawtext | ) |
Definition at line 292 of file vf_drawtext.c.
Referenced by draw_glyphs(), draw_text(), and load_glyph().
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Load glyphs corresponding to the UTF-32 codepoint code.
Definition at line 302 of file vf_drawtext.c.
Referenced by draw_text(), and init().
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Definition at line 369 of file vf_drawtext.c.
Referenced by load_font().
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Definition at line 458 of file vf_drawtext.c.
Referenced by init().
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Definition at line 475 of file vf_drawtext.c.
Referenced by filter_frame(), and init().
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inlinestatic |
Definition at line 502 of file vf_drawtext.c.
Referenced by draw_text().
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Definition at line 595 of file vf_drawtext.c.
Referenced by command().
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Definition at line 690 of file vf_drawtext.c.
Definition at line 695 of file vf_drawtext.c.
Referenced by uninit().
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Definition at line 705 of file vf_drawtext.c.
Referenced by command().
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Definition at line 729 of file vf_drawtext.c.
Referenced by command().
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Definition at line 770 of file vf_drawtext.c.
Referenced by cdg_decode_frame(), check_keyboard_interaction(), decode_subframe_lpc(), ftp_abort(), ftp_current_dir(), ftp_delete(), ftp_file_size(), ftp_list_mlsd(), ftp_list_nlst(), ftp_move(), ftp_passive_mode(), ftp_passive_mode_epsv(), ftp_restart(), ftp_retrieve(), ftp_set_dir(), ftp_store(), ftp_type(), idcin_read_packet(), read_connect(), and send_invoke_response().
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Definition at line 788 of file vf_drawtext.c.
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Definition at line 797 of file vf_drawtext.c.
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Definition at line 849 of file vf_drawtext.c.
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Definition at line 858 of file vf_drawtext.c.
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Definition at line 871 of file vf_drawtext.c.
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Definition at line 887 of file vf_drawtext.c.
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Definition at line 907 of file vf_drawtext.c.
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Definition at line 986 of file vf_drawtext.c.
Referenced by expand_function().
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Definition at line 1013 of file vf_drawtext.c.
Referenced by expand_text().
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Definition at line 1053 of file vf_drawtext.c.
Referenced by draw_text().
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Definition at line 1076 of file vf_drawtext.c.
Referenced by draw_text().
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Definition at line 1120 of file vf_drawtext.c.
Referenced by draw_text().
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Definition at line 1127 of file vf_drawtext.c.
Referenced by draw_text().
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Definition at line 1142 of file vf_drawtext.c.
Referenced by filter_frame().
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Definition at line 1330 of file vf_drawtext.c.
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Definition at line 73 of file vf_drawtext.c.
Referenced by config_input(), func_eval_expr(), and func_eval_expr_int_format().
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Definition at line 94 of file vf_drawtext.c.
Referenced by config_input(), func_eval_expr(), and func_eval_expr_int_format().
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Definition at line 105 of file vf_drawtext.c.
Referenced by config_input(), func_eval_expr(), and func_eval_expr_int_format().
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Definition at line 202 of file vf_drawtext.c.
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Referenced by eval_function().
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Definition at line 1368 of file vf_drawtext.c.
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Definition at line 1379 of file vf_drawtext.c.
AVFilter ff_vf_drawtext |
Definition at line 1387 of file vf_drawtext.c.