#include <sys/time.h>
#include <time.h>
#include "libavutil/colorspace.h"
#include "libavutil/file.h"
#include "libavutil/eval.h"
#include "libavutil/opt.h"
#include "libavutil/random_seed.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#include "libavutil/tree.h"
#include "libavutil/lfg.h"
#include "avfilter.h"
#include "drawutils.h"
#include <ft2build.h>
#include <freetype/config/ftheader.h>
#include <FT_FREETYPE_H>
#include <FT_GLYPH_H>
#include <FT_ERRORS_H>
Go to the source code of this file.
Definition in file vf_drawtext.c.
| #define FT_ERROR_END_LIST { 0, NULL } }; |
Definition at line 212 of file vf_drawtext.c.
| #define FT_ERROR_START_LIST { |
Definition at line 210 of file vf_drawtext.c.
| #define FT_ERRORDEF | ( | e, | |||
| v, | |||||
| s | ) | { (e), (s) }, |
Definition at line 211 of file vf_drawtext.c.
| #define GET_BITMAP_VAL | ( | r, | |||
| c | ) |
Value:
bitmap->pixel_mode == FT_PIXEL_MODE_MONO ? \
(bitmap->buffer[(r) * bitmap->pitch + ((c)>>3)] & (0x80 >> ((c)&7))) * 255 : \
bitmap->buffer[(r) * bitmap->pitch + (c)]
Definition at line 525 of file vf_drawtext.c.
Referenced by draw_glyph_rgb(), and draw_glyph_yuv().
| #define OFFSET | ( | x | ) | offsetof(DrawTextContext, x) |
Definition at line 159 of file vf_drawtext.c.
| #define SET_PIXEL_RGB | ( | picref, | |||
| rgba_color, | |||||
| val, | |||||
| x, | |||||
| y, | |||||
| pixel_step, | |||||
| r_off, | |||||
| g_off, | |||||
| b_off, | |||||
| a_off | ) |
Value:
{ \
p = picref->data[0] + (x) * pixel_step + ((y) * picref->linesize[0]); \
alpha = rgba_color[3] * (val) * 129; \
*(p+r_off) = (alpha * rgba_color[0] + (255*255*129 - alpha) * *(p+r_off)) >> 23; \
*(p+g_off) = (alpha * rgba_color[1] + (255*255*129 - alpha) * *(p+g_off)) >> 23; \
*(p+b_off) = (alpha * rgba_color[2] + (255*255*129 - alpha) * *(p+b_off)) >> 23; \
}
Definition at line 567 of file vf_drawtext.c.
| #define SET_PIXEL_YUV | ( | picref, | |||
| yuva_color, | |||||
| val, | |||||
| x, | |||||
| y, | |||||
| hsub, | |||||
| vsub | ) |
Value:
{ \
luma_pos = ((x) ) + ((y) ) * picref->linesize[0]; \
alpha = yuva_color[3] * (val) * 129; \
picref->data[0][luma_pos] = (alpha * yuva_color[0] + (255*255*129 - alpha) * picref->data[0][luma_pos] ) >> 23; \
if (((x) & ((1<<(hsub)) - 1)) == 0 && ((y) & ((1<<(vsub)) - 1)) == 0) {\
chroma_pos1 = ((x) >> (hsub)) + ((y) >> (vsub)) * picref->linesize[1]; \
chroma_pos2 = ((x) >> (hsub)) + ((y) >> (vsub)) * picref->linesize[2]; \
picref->data[1][chroma_pos1] = (alpha * yuva_color[1] + (255*255*129 - alpha) * picref->data[1][chroma_pos1]) >> 23; \
picref->data[2][chroma_pos2] = (alpha * yuva_color[2] + (255*255*129 - alpha) * picref->data[2][chroma_pos2]) >> 23; \
}\
}
Definition at line 530 of file vf_drawtext.c.
Referenced by draw_glyph_yuv(), and drawbox().
| typedef double(* eval_func2)(void *, double a, double b) |
Definition at line 81 of file vf_drawtext.c.
| enum var_name |
Definition at line 88 of file vf_drawtext.c.
| static int command | ( | AVFilterContext * | ctx, | |
| const char * | cmd, | |||
| const char * | arg, | |||
| char * | res, | |||
| int | res_len, | |||
| int | flags | |||
| ) | [static] |
Definition at line 509 of file vf_drawtext.c.
Referenced by cdg_decode_frame(), idcin_read_packet(), and transcode().
| static int config_input | ( | AVFilterLink * | inlink | ) | [static] |
Definition at line 453 of file vf_drawtext.c.
| static double drand | ( | void * | opaque, | |
| double | min, | |||
| double | max | |||
| ) | [static] |
Definition at line 76 of file vf_drawtext.c.
| static int draw_glyph_rgb | ( | AVFilterBufferRef * | picref, | |
| FT_Bitmap * | bitmap, | |||
| int | x, | |||
| int | y, | |||
| int | width, | |||
| int | height, | |||
| int | pixel_step, | |||
| const uint8_t | rgba_color[4], | |||
| const uint8_t | rgba_map[4] | |||
| ) | [inline, static] |
| static int draw_glyph_yuv | ( | AVFilterBufferRef * | picref, | |
| FT_Bitmap * | bitmap, | |||
| int | x, | |||
| int | y, | |||
| int | width, | |||
| int | height, | |||
| const uint8_t | yuva_color[4], | |||
| int | hsub, | |||
| int | vsub | |||
| ) | [inline, static] |
| static int draw_glyphs | ( | DrawTextContext * | dtext, | |
| AVFilterBufferRef * | picref, | |||
| int | width, | |||
| int | height, | |||
| const uint8_t | rgbcolor[4], | |||
| const uint8_t | yuvcolor[4], | |||
| int | x, | |||
| int | y | |||
| ) | [static] |
| static int draw_text | ( | AVFilterContext * | ctx, | |
| AVFilterBufferRef * | picref, | |||
| int | width, | |||
| int | height | |||
| ) | [static] |
| static void drawbox | ( | AVFilterBufferRef * | picref, | |
| int | x, | |||
| int | y, | |||
| int | width, | |||
| int | height, | |||
| uint8_t * | line[4], | |||
| int | pixel_step[4], | |||
| uint8_t | color[4], | |||
| int | hsub, | |||
| int | vsub, | |||
| int | is_rgba_packed, | |||
| uint8_t | rgba_map[4] | |||
| ) | [inline, static] |
Definition at line 600 of file vf_drawtext.c.
Referenced by avfilter_register_all(), config_input(), draw_slice(), draw_text(), and init().
| static const char* drawtext_get_name | ( | void * | ctx | ) | [static] |
Definition at line 198 of file vf_drawtext.c.
| static void end_frame | ( | AVFilterLink * | inlink | ) | [static] |
Definition at line 826 of file vf_drawtext.c.
| static int glyph_cmp | ( | void * | key, | |
| const void * | b | |||
| ) | [static] |
Definition at line 233 of file vf_drawtext.c.
Referenced by draw_glyphs(), draw_text(), and load_glyph().
| static int glyph_enu_free | ( | void * | opaque, | |
| void * | elem | |||
| ) | [static] |
| static av_cold int init | ( | AVFilterContext * | ctx, | |
| const char * | args, | |||
| void * | opaque | |||
| ) | [static] |
Definition at line 294 of file vf_drawtext.c.
| static int is_newline | ( | uint32_t | c | ) | [inline, static] |
| static int load_glyph | ( | AVFilterContext * | ctx, | |
| Glyph ** | glyph_ptr, | |||
| uint32_t | code | |||
| ) | [static] |
Load glyphs corresponding to the UTF-32 codepoint code.
Definition at line 243 of file vf_drawtext.c.
Referenced by draw_text(), and init().
| static void null_draw_slice | ( | AVFilterLink * | link, | |
| int | y, | |||
| int | h, | |||
| int | slice_dir | |||
| ) | [static] |
Definition at line 824 of file vf_drawtext.c.
| static int query_formats | ( | AVFilterContext * | ctx | ) | [static] |
Definition at line 393 of file vf_drawtext.c.
| static av_cold void uninit | ( | AVFilterContext * | ctx | ) | [static] |
Definition at line 415 of file vf_drawtext.c.
Initial value:
{
.name = "drawtext",
.description = NULL_IF_CONFIG_SMALL("Draw text on top of video frames using libfreetype library."),
.priv_size = sizeof(DrawTextContext),
.init = init,
.uninit = uninit,
.query_formats = query_formats,
.inputs = (const AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.get_video_buffer = avfilter_null_get_video_buffer,
.start_frame = avfilter_null_start_frame,
.draw_slice = null_draw_slice,
.end_frame = end_frame,
.config_props = config_input,
.min_perms = AV_PERM_WRITE |
AV_PERM_READ,
.rej_perms = AV_PERM_PRESERVE },
{ .name = NULL}},
.outputs = (const AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_VIDEO, },
{ .name = NULL}},
.process_command = command,
}
Definition at line 849 of file vf_drawtext.c.
const AVClass drawtext_class [static] |
Initial value:
{
"DrawTextContext",
drawtext_get_name,
drawtext_options
}
Definition at line 203 of file vf_drawtext.c.
const AVOption drawtext_options[] [static] |
Definition at line 161 of file vf_drawtext.c.
const eval_func2 fun2[] [static] |
const char* fun2_names[] [static] |
Initial value:
{
"rand",
}
Definition at line 72 of file vf_drawtext.c.
Referenced by config_input().
const char* const var_names[] [static] |
Initial value:
{
"main_w", "w", "W",
"main_h", "h", "H",
"tw", "text_w",
"th", "text_h",
"max_glyph_w",
"max_glyph_h",
"max_glyph_a", "ascent",
"max_glyph_d", "descent",
"line_h", "lh",
"sar",
"dar",
"hsub",
"vsub",
"x",
"y",
"n",
"t",
NULL
}
Definition at line 51 of file vf_drawtext.c.
1.5.8