#include <time.h>
#include "libavutil/colorspace.h"
+#include "libavutil/common.h"
#include "libavutil/file.h"
+#include "libavutil/eval.h"
#include "libavutil/opt.h"
+#include "libavutil/mathematics.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"
-
-#undef time
+#include "formats.h"
+#include "internal.h"
+#include "video.h"
#include <ft2build.h>
-#include <freetype/config/ftheader.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H
+static const char *const var_names[] = {
+ "E",
+ "PHI",
+ "PI",
+ "main_w", "W", ///< width of the main video
+ "main_h", "H", ///< height of the main video
+ "text_w", "w", ///< width of the overlay text
+ "text_h", "h", ///< height of the overlay text
+ "x",
+ "y",
+ "n", ///< number of processed frames
+ "t", ///< timestamp expressed in seconds
+ NULL
+};
+
+static const char *const fun2_names[] = {
+ "rand"
+};
+
+static double drand(void *opaque, double min, double max)
+{
+ return min + (max-min) / UINT_MAX * av_lfg_get(opaque);
+}
+
+typedef double (*eval_func2)(void *, double a, double b);
+
+static const eval_func2 fun2[] = {
+ drand,
+ NULL
+};
+
+enum var_name {
+ VAR_E,
+ VAR_PHI,
+ VAR_PI,
+ VAR_MAIN_W, VAR_MW,
+ VAR_MAIN_H, VAR_MH,
+ VAR_TEXT_W, VAR_TW,
+ VAR_TEXT_H, VAR_TH,
+ VAR_X,
+ VAR_Y,
+ VAR_N,
+ VAR_T,
+ VAR_VARS_NB
+};
+
typedef struct {
const AVClass *class;
uint8_t *fontfile; ///< font to be used
FT_Vector *positions; ///< positions for each element in the text
size_t nb_positions; ///< number of elements of positions array
char *textfile; ///< file with text to be drawn
- unsigned int x; ///< x position to start drawing text
- unsigned int y; ///< y position to start drawing text
+ int x, y; ///< position to start drawing text
+ int w, h; ///< dimension of the text block
int shadowx, shadowy;
unsigned int fontsize; ///< font size to use
char *fontcolor_string; ///< font color as string
short int draw_box; ///< draw box around text - true or false
int use_kerning; ///< font kerning is used - true/false
int tabsize; ///< tab size
+ int fix_bounds; ///< do we let it go out of frame bounds - t/f
FT_Library library; ///< freetype font library handle
FT_Face face; ///< freetype font face handle
int pixel_step[4]; ///< distance in bytes between the component of each pixel
uint8_t rgba_map[4]; ///< map RGBA offsets to the positions in the packed RGBA format
uint8_t *box_line[4]; ///< line used for filling the box background
+ char *x_expr, *y_expr;
+ AVExpr *x_pexpr, *y_pexpr; ///< parsed expressions for x and y
+ double var_values[VAR_VARS_NB];
+ char *d_expr;
+ AVExpr *d_pexpr;
+ int draw; ///< set to zero to prevent drawing
+ AVLFG prng; ///< random
} DrawTextContext;
#define OFFSET(x) offsetof(DrawTextContext, x)
+#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
static const AVOption drawtext_options[]= {
-{"fontfile", "set font file", OFFSET(fontfile), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX },
-{"text", "set text", OFFSET(text), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX },
-{"textfile", "set text file", OFFSET(textfile), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX },
-{"fontcolor","set foreground color", OFFSET(fontcolor_string), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX },
-{"boxcolor", "set box color", OFFSET(boxcolor_string), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX },
-{"shadowcolor", "set shadow color", OFFSET(shadowcolor_string), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX },
-{"box", "set box", OFFSET(draw_box), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
-{"fontsize", "set font size", OFFSET(fontsize), AV_OPT_TYPE_INT, {.dbl=16}, 1, 72 },
-{"x", "set x", OFFSET(x), AV_OPT_TYPE_INT, {.dbl=0}, 0, INT_MAX },
-{"y", "set y", OFFSET(y), AV_OPT_TYPE_INT, {.dbl=0}, 0, INT_MAX },
-{"shadowx", "set x", OFFSET(shadowx), AV_OPT_TYPE_INT, {.dbl=0}, INT_MIN, INT_MAX },
-{"shadowy", "set y", OFFSET(shadowy), AV_OPT_TYPE_INT, {.dbl=0}, INT_MIN, INT_MAX },
-{"tabsize", "set tab size", OFFSET(tabsize), AV_OPT_TYPE_INT, {.dbl=4}, 0, INT_MAX },
-
-/* FT_LOAD_* flags */
-{"ft_load_flags", "set font loading flags for libfreetype", OFFSET(ft_load_flags), AV_OPT_TYPE_FLAGS, {.dbl=FT_LOAD_DEFAULT|FT_LOAD_RENDER}, 0, INT_MAX, 0, "ft_load_flags" },
-{"default", "set default", 0, AV_OPT_TYPE_CONST, {FT_LOAD_DEFAULT}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"no_scale", "set no_scale", 0, AV_OPT_TYPE_CONST, {FT_LOAD_NO_SCALE}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"no_hinting", "set no_hinting", 0, AV_OPT_TYPE_CONST, {FT_LOAD_NO_HINTING}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"render", "set render", 0, AV_OPT_TYPE_CONST, {FT_LOAD_RENDER}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"no_bitmap", "set no_bitmap", 0, AV_OPT_TYPE_CONST, {FT_LOAD_NO_BITMAP}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"vertical_layout", "set vertical_layout", 0, AV_OPT_TYPE_CONST, {FT_LOAD_VERTICAL_LAYOUT}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"force_autohint", "set force_autohint", 0, AV_OPT_TYPE_CONST, {FT_LOAD_FORCE_AUTOHINT}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"crop_bitmap", "set crop_bitmap", 0, AV_OPT_TYPE_CONST, {FT_LOAD_CROP_BITMAP}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"pedantic", "set pedantic", 0, AV_OPT_TYPE_CONST, {FT_LOAD_PEDANTIC}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"ignore_global_advance_width", "set ignore_global_advance_width", 0, AV_OPT_TYPE_CONST, {FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"no_recurse", "set no_recurse", 0, AV_OPT_TYPE_CONST, {FT_LOAD_NO_RECURSE}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"ignore_transform", "set ignore_transform", 0, AV_OPT_TYPE_CONST, {FT_LOAD_IGNORE_TRANSFORM}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"monochrome", "set monochrome", 0, AV_OPT_TYPE_CONST, {FT_LOAD_MONOCHROME}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"linear_design", "set linear_design", 0, AV_OPT_TYPE_CONST, {FT_LOAD_LINEAR_DESIGN}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"no_autohint", "set no_autohint", 0, AV_OPT_TYPE_CONST, {FT_LOAD_NO_AUTOHINT}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{NULL},
+ { "fontfile", NULL, OFFSET(fontfile), AV_OPT_TYPE_STRING, .flags = FLAGS },
+ { "text", NULL, OFFSET(text), AV_OPT_TYPE_STRING, .flags = FLAGS },
+ { "textfile", NULL, OFFSET(textfile), AV_OPT_TYPE_STRING, .flags = FLAGS },
+ { "fontcolor", NULL, OFFSET(fontcolor_string), AV_OPT_TYPE_STRING, { .str = "black" }, .flags = FLAGS },
+ { "boxcolor", NULL, OFFSET(boxcolor_string), AV_OPT_TYPE_STRING, { .str = "white" }, .flags = FLAGS },
+ { "shadowcolor", NULL, OFFSET(shadowcolor_string), AV_OPT_TYPE_STRING, { .str = "black" }, .flags = FLAGS },
+ { "box", NULL, OFFSET(draw_box), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
+ { "fontsize", NULL, OFFSET(fontsize), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, 72, FLAGS },
+ { "x", NULL, OFFSET(x_expr), AV_OPT_TYPE_STRING, { .str = "0" }, .flags = FLAGS },
+ { "y", NULL, OFFSET(y_expr), AV_OPT_TYPE_STRING, { .str = "0" }, .flags = FLAGS },
+ { "shadowx", NULL, OFFSET(shadowx), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS },
+ { "shadowy", NULL, OFFSET(shadowy), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS },
+ { "tabsize", NULL, OFFSET(tabsize), AV_OPT_TYPE_INT, { .i64 = 4 }, 0, INT_MAX, FLAGS },
+ { "draw", "if false do not draw", OFFSET(d_expr), AV_OPT_TYPE_STRING, { .str = "1" }, .flags = FLAGS },
+ { "fix_bounds", "if true, check and fix text coords to avoid clipping",
+ OFFSET(fix_bounds), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS },
+
+ /* FT_LOAD_* flags */
+ { "ft_load_flags", "set font loading flags for libfreetype", OFFSET(ft_load_flags), AV_OPT_TYPE_FLAGS, { .i64 = FT_LOAD_DEFAULT | FT_LOAD_RENDER}, 0, INT_MAX, FLAGS, "ft_load_flags" },
+ { "default", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FT_LOAD_DEFAULT }, .flags = FLAGS, .unit = "ft_load_flags" },
+ { "no_scale", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FT_LOAD_NO_SCALE }, .flags = FLAGS, .unit = "ft_load_flags" },
+ { "no_hinting", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FT_LOAD_NO_HINTING }, .flags = FLAGS, .unit = "ft_load_flags" },
+ { "render", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FT_LOAD_RENDER }, .flags = FLAGS, .unit = "ft_load_flags" },
+ { "no_bitmap", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FT_LOAD_NO_BITMAP }, .flags = FLAGS, .unit = "ft_load_flags" },
+ { "vertical_layout", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FT_LOAD_VERTICAL_LAYOUT }, .flags = FLAGS, .unit = "ft_load_flags" },
+ { "force_autohint", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FT_LOAD_FORCE_AUTOHINT }, .flags = FLAGS, .unit = "ft_load_flags" },
+ { "crop_bitmap", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FT_LOAD_CROP_BITMAP }, .flags = FLAGS, .unit = "ft_load_flags" },
+ { "pedantic", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FT_LOAD_PEDANTIC }, .flags = FLAGS, .unit = "ft_load_flags" },
+ { "ignore_global_advance_width", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH }, .flags = FLAGS, .unit = "ft_load_flags" },
+ { "no_recurse", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FT_LOAD_NO_RECURSE }, .flags = FLAGS, .unit = "ft_load_flags" },
+ { "ignore_transform", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FT_LOAD_IGNORE_TRANSFORM }, .flags = FLAGS, .unit = "ft_load_flags" },
+ { "monochrome", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FT_LOAD_MONOCHROME }, .flags = FLAGS, .unit = "ft_load_flags" },
+ { "linear_design", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FT_LOAD_LINEAR_DESIGN }, .flags = FLAGS, .unit = "ft_load_flags" },
+ { "no_autohint", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FT_LOAD_NO_AUTOHINT }, .flags = FLAGS, .unit = "ft_load_flags" },
+ { NULL},
};
static const char *drawtext_get_name(void *ctx)
*/
static int load_glyph(AVFilterContext *ctx, Glyph **glyph_ptr, uint32_t code)
{
- DrawTextContext *dtext = ctx->priv;
+ DrawTextContext *s = ctx->priv;
Glyph *glyph;
struct AVTreeNode *node = NULL;
int ret;
- /* load glyph into dtext->face->glyph */
- if (FT_Load_Char(dtext->face, code, dtext->ft_load_flags))
+ /* load glyph into s->face->glyph */
+ if (FT_Load_Char(s->face, code, s->ft_load_flags))
return AVERROR(EINVAL);
/* save glyph */
}
glyph->code = code;
- if (FT_Get_Glyph(dtext->face->glyph, glyph->glyph)) {
+ if (FT_Get_Glyph(s->face->glyph, glyph->glyph)) {
ret = AVERROR(EINVAL);
goto error;
}
- glyph->bitmap = dtext->face->glyph->bitmap;
- glyph->bitmap_left = dtext->face->glyph->bitmap_left;
- glyph->bitmap_top = dtext->face->glyph->bitmap_top;
- glyph->advance = dtext->face->glyph->advance.x >> 6;
+ glyph->bitmap = s->face->glyph->bitmap;
+ glyph->bitmap_left = s->face->glyph->bitmap_left;
+ glyph->bitmap_top = s->face->glyph->bitmap_top;
+ glyph->advance = s->face->glyph->advance.x >> 6;
/* measure text height to calculate text_height (or the maximum text height) */
FT_Glyph_Get_CBox(*glyph->glyph, ft_glyph_bbox_pixels, &glyph->bbox);
/* cache the newly created glyph */
- if (!(node = av_mallocz(av_tree_node_size))) {
+ if (!(node = av_tree_node_alloc())) {
ret = AVERROR(ENOMEM);
goto error;
}
- av_tree_insert(&dtext->glyphs, glyph, glyph_cmp, &node);
+ av_tree_insert(&s->glyphs, glyph, glyph_cmp, &node);
if (glyph_ptr)
*glyph_ptr = glyph;
return ret;
}
-static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
+static av_cold int init(AVFilterContext *ctx)
{
int err;
- DrawTextContext *dtext = ctx->priv;
+ DrawTextContext *s = ctx->priv;
Glyph *glyph;
- dtext->class = &drawtext_class;
- av_opt_set_defaults(dtext);
- dtext->fontcolor_string = av_strdup("black");
- dtext->boxcolor_string = av_strdup("white");
- dtext->shadowcolor_string = av_strdup("black");
-
- if ((err = (av_set_options_string(dtext, args, "=", ":"))) < 0) {
- av_log(ctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
- return err;
- }
-
- if (!dtext->fontfile) {
+ if (!s->fontfile) {
av_log(ctx, AV_LOG_ERROR, "No font filename provided\n");
return AVERROR(EINVAL);
}
- if (dtext->textfile) {
+ if (s->textfile) {
uint8_t *textbuf;
size_t textbuf_size;
- if (dtext->text) {
+ if (s->text) {
av_log(ctx, AV_LOG_ERROR,
"Both text and text file provided. Please provide only one\n");
return AVERROR(EINVAL);
}
- if ((err = av_file_map(dtext->textfile, &textbuf, &textbuf_size, 0, ctx)) < 0) {
+ if ((err = av_file_map(s->textfile, &textbuf, &textbuf_size, 0, ctx)) < 0) {
av_log(ctx, AV_LOG_ERROR,
"The text file '%s' could not be read or is empty\n",
- dtext->textfile);
+ s->textfile);
return err;
}
- if (!(dtext->text = av_malloc(textbuf_size+1)))
+ if (!(s->text = av_malloc(textbuf_size+1)))
return AVERROR(ENOMEM);
- memcpy(dtext->text, textbuf, textbuf_size);
- dtext->text[textbuf_size] = 0;
+ memcpy(s->text, textbuf, textbuf_size);
+ s->text[textbuf_size] = 0;
av_file_unmap(textbuf, textbuf_size);
}
- if (!dtext->text) {
+ if (!s->text) {
av_log(ctx, AV_LOG_ERROR,
"Either text or a valid file must be provided\n");
return AVERROR(EINVAL);
}
- if ((err = av_parse_color(dtext->fontcolor_rgba, dtext->fontcolor_string, -1, ctx))) {
+ if ((err = av_parse_color(s->fontcolor_rgba, s->fontcolor_string, -1, ctx))) {
av_log(ctx, AV_LOG_ERROR,
- "Invalid font color '%s'\n", dtext->fontcolor_string);
+ "Invalid font color '%s'\n", s->fontcolor_string);
return err;
}
- if ((err = av_parse_color(dtext->boxcolor_rgba, dtext->boxcolor_string, -1, ctx))) {
+ if ((err = av_parse_color(s->boxcolor_rgba, s->boxcolor_string, -1, ctx))) {
av_log(ctx, AV_LOG_ERROR,
- "Invalid box color '%s'\n", dtext->boxcolor_string);
+ "Invalid box color '%s'\n", s->boxcolor_string);
return err;
}
- if ((err = av_parse_color(dtext->shadowcolor_rgba, dtext->shadowcolor_string, -1, ctx))) {
+ if ((err = av_parse_color(s->shadowcolor_rgba, s->shadowcolor_string, -1, ctx))) {
av_log(ctx, AV_LOG_ERROR,
- "Invalid shadow color '%s'\n", dtext->shadowcolor_string);
+ "Invalid shadow color '%s'\n", s->shadowcolor_string);
return err;
}
- if ((err = FT_Init_FreeType(&(dtext->library)))) {
+ if ((err = FT_Init_FreeType(&(s->library)))) {
av_log(ctx, AV_LOG_ERROR,
"Could not load FreeType: %s\n", FT_ERRMSG(err));
return AVERROR(EINVAL);
}
/* load the face, and set up the encoding, which is by default UTF-8 */
- if ((err = FT_New_Face(dtext->library, dtext->fontfile, 0, &dtext->face))) {
+ if ((err = FT_New_Face(s->library, s->fontfile, 0, &s->face))) {
av_log(ctx, AV_LOG_ERROR, "Could not load fontface from file '%s': %s\n",
- dtext->fontfile, FT_ERRMSG(err));
+ s->fontfile, FT_ERRMSG(err));
return AVERROR(EINVAL);
}
- if ((err = FT_Set_Pixel_Sizes(dtext->face, 0, dtext->fontsize))) {
+ if ((err = FT_Set_Pixel_Sizes(s->face, 0, s->fontsize))) {
av_log(ctx, AV_LOG_ERROR, "Could not set font size to %d pixels: %s\n",
- dtext->fontsize, FT_ERRMSG(err));
+ s->fontsize, FT_ERRMSG(err));
return AVERROR(EINVAL);
}
- dtext->use_kerning = FT_HAS_KERNING(dtext->face);
+ s->use_kerning = FT_HAS_KERNING(s->face);
/* load the fallback glyph with code 0 */
load_glyph(ctx, NULL, 0);
av_log(ctx, AV_LOG_ERROR, "Could not set tabsize.\n");
return err;
}
- dtext->tabsize *= glyph->advance;
+ s->tabsize *= glyph->advance;
#if !HAVE_LOCALTIME_R
av_log(ctx, AV_LOG_WARNING, "strftime() expansion unavailable!\n");
static int query_formats(AVFilterContext *ctx)
{
- static const enum PixelFormat pix_fmts[] = {
- PIX_FMT_ARGB, PIX_FMT_RGBA,
- PIX_FMT_ABGR, PIX_FMT_BGRA,
- PIX_FMT_RGB24, PIX_FMT_BGR24,
- PIX_FMT_YUV420P, PIX_FMT_YUV444P,
- PIX_FMT_YUV422P, PIX_FMT_YUV411P,
- PIX_FMT_YUV410P, PIX_FMT_YUV440P,
- PIX_FMT_NONE
+ static const enum AVPixelFormat pix_fmts[] = {
+ AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA,
+ AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA,
+ AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
+ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV444P,
+ AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV411P,
+ AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P,
+ AV_PIX_FMT_NONE
};
- avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
+ ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
return 0;
}
static av_cold void uninit(AVFilterContext *ctx)
{
- DrawTextContext *dtext = ctx->priv;
+ DrawTextContext *s = ctx->priv;
int i;
- av_freep(&dtext->fontfile);
- av_freep(&dtext->text);
- av_freep(&dtext->expanded_text);
- av_freep(&dtext->fontcolor_string);
- av_freep(&dtext->boxcolor_string);
- av_freep(&dtext->positions);
- av_freep(&dtext->shadowcolor_string);
- av_tree_enumerate(dtext->glyphs, NULL, NULL, glyph_enu_free);
- av_tree_destroy(dtext->glyphs);
- dtext->glyphs = 0;
- FT_Done_Face(dtext->face);
- FT_Done_FreeType(dtext->library);
+ av_expr_free(s->x_pexpr);
+ av_expr_free(s->y_pexpr);
+ av_expr_free(s->d_pexpr);
+ s->x_pexpr = s->y_pexpr = s->d_pexpr = NULL;
+ av_freep(&s->expanded_text);
+ av_freep(&s->positions);
+ av_tree_enumerate(s->glyphs, NULL, NULL, glyph_enu_free);
+ av_tree_destroy(s->glyphs);
+ s->glyphs = 0;
+ FT_Done_Face(s->face);
+ FT_Done_FreeType(s->library);
for (i = 0; i < 4; i++) {
- av_freep(&dtext->box_line[i]);
- dtext->pixel_step[i] = 0;
+ av_freep(&s->box_line[i]);
+ s->pixel_step[i] = 0;
}
}
+static inline int is_newline(uint32_t c)
+{
+ return c == '\n' || c == '\r' || c == '\f' || c == '\v';
+}
+
+static int dtext_prepare_text(AVFilterContext *ctx)
+{
+ DrawTextContext *s = ctx->priv;
+ uint32_t code = 0, prev_code = 0;
+ int x = 0, y = 0, i = 0, ret;
+ int text_height, baseline;
+ char *text = s->text;
+ uint8_t *p;
+ int str_w = 0, len;
+ int y_min = 32000, y_max = -32000;
+ FT_Vector delta;
+ Glyph *glyph = NULL, *prev_glyph = NULL;
+ Glyph dummy = { 0 };
+ int width = ctx->inputs[0]->w;
+ int height = ctx->inputs[0]->h;
+
+#if HAVE_LOCALTIME_R
+ time_t now = time(0);
+ struct tm ltime;
+ uint8_t *buf = s->expanded_text;
+ int buf_size = s->expanded_text_size;
+
+ if (!buf)
+ buf_size = 2*strlen(s->text)+1;
+
+ localtime_r(&now, <ime);
+
+ while ((buf = av_realloc(buf, buf_size))) {
+ *buf = 1;
+ if (strftime(buf, buf_size, s->text, <ime) != 0 || *buf == 0)
+ break;
+ buf_size *= 2;
+ }
+
+ if (!buf)
+ return AVERROR(ENOMEM);
+ text = s->expanded_text = buf;
+ s->expanded_text_size = buf_size;
+#endif
+
+ if ((len = strlen(text)) > s->nb_positions) {
+ FT_Vector *p = av_realloc(s->positions,
+ len * sizeof(*s->positions));
+ if (!p) {
+ av_freep(s->positions);
+ s->nb_positions = 0;
+ return AVERROR(ENOMEM);
+ } else {
+ s->positions = p;
+ s->nb_positions = len;
+ }
+ }
+
+ /* load and cache glyphs */
+ for (i = 0, p = text; *p; i++) {
+ GET_UTF8(code, *p++, continue;);
+
+ /* get glyph */
+ dummy.code = code;
+ glyph = av_tree_find(s->glyphs, &dummy, glyph_cmp, NULL);
+ if (!glyph) {
+ ret = load_glyph(ctx, &glyph, code);
+ if (ret)
+ return ret;
+ }
+
+ y_min = FFMIN(glyph->bbox.yMin, y_min);
+ y_max = FFMAX(glyph->bbox.yMax, y_max);
+ }
+ text_height = y_max - y_min;
+ baseline = y_max;
+
+ /* compute and save position for each glyph */
+ glyph = NULL;
+ for (i = 0, p = text; *p; i++) {
+ GET_UTF8(code, *p++, continue;);
+
+ /* skip the \n in the sequence \r\n */
+ if (prev_code == '\r' && code == '\n')
+ continue;
+
+ prev_code = code;
+ if (is_newline(code)) {
+ str_w = FFMAX(str_w, x - s->x);
+ y += text_height;
+ x = 0;
+ continue;
+ }
+
+ /* get glyph */
+ prev_glyph = glyph;
+ dummy.code = code;
+ glyph = av_tree_find(s->glyphs, &dummy, glyph_cmp, NULL);
+
+ /* kerning */
+ if (s->use_kerning && prev_glyph && glyph->code) {
+ FT_Get_Kerning(s->face, prev_glyph->code, glyph->code,
+ ft_kerning_default, &delta);
+ x += delta.x >> 6;
+ }
+
+ if (x + glyph->bbox.xMax >= width) {
+ str_w = FFMAX(str_w, x);
+ y += text_height;
+ x = 0;
+ }
+
+ /* save position */
+ s->positions[i].x = x + glyph->bitmap_left;
+ s->positions[i].y = y - glyph->bitmap_top + baseline;
+ if (code == '\t') x = (x / s->tabsize + 1)*s->tabsize;
+ else x += glyph->advance;
+ }
+
+ str_w = FFMIN(width - 1, FFMAX(str_w, x));
+ y = FFMIN(y + text_height, height - 1);
+
+ s->w = str_w;
+ s->var_values[VAR_TEXT_W] = s->var_values[VAR_TW] = s->w;
+ s->h = y;
+ s->var_values[VAR_TEXT_H] = s->var_values[VAR_TH] = s->h;
+
+ return 0;
+}
+
+
static int config_input(AVFilterLink *inlink)
{
- DrawTextContext *dtext = inlink->dst->priv;
- const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[inlink->format];
+ AVFilterContext *ctx = inlink->dst;
+ DrawTextContext *s = ctx->priv;
+ const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
int ret;
- dtext->hsub = pix_desc->log2_chroma_w;
- dtext->vsub = pix_desc->log2_chroma_h;
+ s->hsub = pix_desc->log2_chroma_w;
+ s->vsub = pix_desc->log2_chroma_h;
+
+ s->var_values[VAR_E ] = M_E;
+ s->var_values[VAR_PHI] = M_PHI;
+ s->var_values[VAR_PI ] = M_PI;
+
+ s->var_values[VAR_MAIN_W] =
+ s->var_values[VAR_MW] = ctx->inputs[0]->w;
+ s->var_values[VAR_MAIN_H] =
+ s->var_values[VAR_MH] = ctx->inputs[0]->h;
+
+ s->var_values[VAR_X] = 0;
+ s->var_values[VAR_Y] = 0;
+ s->var_values[VAR_T] = NAN;
+
+ av_lfg_init(&s->prng, av_get_random_seed());
+
+ av_expr_free(s->x_pexpr);
+ av_expr_free(s->y_pexpr);
+ av_expr_free(s->d_pexpr);
+ s->x_pexpr = s->y_pexpr = s->d_pexpr = NULL;
+ if ((ret = av_expr_parse(&s->x_pexpr, s->x_expr, var_names,
+ NULL, NULL, fun2_names, fun2, 0, ctx)) < 0 ||
+ (ret = av_expr_parse(&s->y_pexpr, s->y_expr, var_names,
+ NULL, NULL, fun2_names, fun2, 0, ctx)) < 0 ||
+ (ret = av_expr_parse(&s->d_pexpr, s->d_expr, var_names,
+ NULL, NULL, fun2_names, fun2, 0, ctx)) < 0)
+ return AVERROR(EINVAL);
if ((ret =
- ff_fill_line_with_color(dtext->box_line, dtext->pixel_step,
- inlink->w, dtext->boxcolor,
- inlink->format, dtext->boxcolor_rgba,
- &dtext->is_packed_rgb, dtext->rgba_map)) < 0)
+ ff_fill_line_with_color(s->box_line, s->pixel_step,
+ inlink->w, s->boxcolor,
+ inlink->format, s->boxcolor_rgba,
+ &s->is_packed_rgb, s->rgba_map)) < 0)
return ret;
- if (!dtext->is_packed_rgb) {
- uint8_t *rgba = dtext->fontcolor_rgba;
- dtext->fontcolor[0] = RGB_TO_Y_CCIR(rgba[0], rgba[1], rgba[2]);
- dtext->fontcolor[1] = RGB_TO_U_CCIR(rgba[0], rgba[1], rgba[2], 0);
- dtext->fontcolor[2] = RGB_TO_V_CCIR(rgba[0], rgba[1], rgba[2], 0);
- dtext->fontcolor[3] = rgba[3];
- rgba = dtext->shadowcolor_rgba;
- dtext->shadowcolor[0] = RGB_TO_Y_CCIR(rgba[0], rgba[1], rgba[2]);
- dtext->shadowcolor[1] = RGB_TO_U_CCIR(rgba[0], rgba[1], rgba[2], 0);
- dtext->shadowcolor[2] = RGB_TO_V_CCIR(rgba[0], rgba[1], rgba[2], 0);
- dtext->shadowcolor[3] = rgba[3];
+ if (!s->is_packed_rgb) {
+ uint8_t *rgba = s->fontcolor_rgba;
+ s->fontcolor[0] = RGB_TO_Y_CCIR(rgba[0], rgba[1], rgba[2]);
+ s->fontcolor[1] = RGB_TO_U_CCIR(rgba[0], rgba[1], rgba[2], 0);
+ s->fontcolor[2] = RGB_TO_V_CCIR(rgba[0], rgba[1], rgba[2], 0);
+ s->fontcolor[3] = rgba[3];
+ rgba = s->shadowcolor_rgba;
+ s->shadowcolor[0] = RGB_TO_Y_CCIR(rgba[0], rgba[1], rgba[2]);
+ s->shadowcolor[1] = RGB_TO_U_CCIR(rgba[0], rgba[1], rgba[2], 0);
+ s->shadowcolor[2] = RGB_TO_V_CCIR(rgba[0], rgba[1], rgba[2], 0);
+ s->shadowcolor[3] = rgba[3];
}
- return 0;
+ s->draw = 1;
+
+ return dtext_prepare_text(ctx);
}
#define GET_BITMAP_VAL(r, c) \
(bitmap->buffer[(r) * bitmap->pitch + ((c)>>3)] & (0x80 >> ((c)&7))) * 255 : \
bitmap->buffer[(r) * bitmap->pitch + (c)]
-#define SET_PIXEL_YUV(picref, yuva_color, val, x, y, hsub, vsub) { \
- luma_pos = ((x) ) + ((y) ) * picref->linesize[0]; \
+#define SET_PIXEL_YUV(frame, yuva_color, val, x, y, hsub, vsub) { \
+ luma_pos = ((x) ) + ((y) ) * frame->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; \
+ frame->data[0][luma_pos] = (alpha * yuva_color[0] + (255*255*129 - alpha) * frame->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; \
+ chroma_pos1 = ((x) >> (hsub)) + ((y) >> (vsub)) * frame->linesize[1]; \
+ chroma_pos2 = ((x) >> (hsub)) + ((y) >> (vsub)) * frame->linesize[2]; \
+ frame->data[1][chroma_pos1] = (alpha * yuva_color[1] + (255*255*129 - alpha) * frame->data[1][chroma_pos1]) >> 23; \
+ frame->data[2][chroma_pos2] = (alpha * yuva_color[2] + (255*255*129 - alpha) * frame->data[2][chroma_pos2]) >> 23; \
}\
}
-static inline int draw_glyph_yuv(AVFilterBufferRef *picref, FT_Bitmap *bitmap, unsigned int x,
+static inline int draw_glyph_yuv(AVFrame *frame, FT_Bitmap *bitmap, unsigned int x,
unsigned int y, unsigned int width, unsigned int height,
const uint8_t yuva_color[4], int hsub, int vsub)
{
if (!src_val)
continue;
- SET_PIXEL_YUV(picref, yuva_color, src_val, c+x, y+r, hsub, vsub);
+ SET_PIXEL_YUV(frame, yuva_color, src_val, c+x, y+r, hsub, vsub);
}
}
return 0;
}
-#define SET_PIXEL_RGB(picref, rgba_color, val, x, y, pixel_step, r_off, g_off, b_off, a_off) { \
- p = picref->data[0] + (x) * pixel_step + ((y) * picref->linesize[0]); \
+#define SET_PIXEL_RGB(frame, rgba_color, val, x, y, pixel_step, r_off, g_off, b_off, a_off) { \
+ p = frame->data[0] + (x) * pixel_step + ((y) * frame->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; \
}
-static inline int draw_glyph_rgb(AVFilterBufferRef *picref, FT_Bitmap *bitmap,
+static inline int draw_glyph_rgb(AVFrame *frame, FT_Bitmap *bitmap,
unsigned int x, unsigned int y,
unsigned int width, unsigned int height, int pixel_step,
const uint8_t rgba_color[4], const uint8_t rgba_map[4])
if (!src_val)
continue;
- SET_PIXEL_RGB(picref, rgba_color, src_val, c+x, y+r, pixel_step,
+ SET_PIXEL_RGB(frame, rgba_color, src_val, c+x, y+r, pixel_step,
rgba_map[0], rgba_map[1], rgba_map[2], rgba_map[3]);
}
}
return 0;
}
-static inline void drawbox(AVFilterBufferRef *picref, unsigned int x, unsigned int y,
+static inline void drawbox(AVFrame *frame, unsigned int x, unsigned int y,
unsigned int width, unsigned 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])
uint8_t *p;
for (j = 0; j < height; j++)
for (i = 0; i < width; i++)
- SET_PIXEL_RGB(picref, color, 255, i+x, y+j, pixel_step[0],
+ SET_PIXEL_RGB(frame, color, 255, i+x, y+j, pixel_step[0],
rgba_map[0], rgba_map[1], rgba_map[2], rgba_map[3]);
} else {
unsigned int luma_pos, chroma_pos1, chroma_pos2;
for (j = 0; j < height; j++)
for (i = 0; i < width; i++)
- SET_PIXEL_YUV(picref, color, 255, i+x, y+j, hsub, vsub);
+ SET_PIXEL_YUV(frame, color, 255, i+x, y+j, hsub, vsub);
}
} else {
- ff_draw_rectangle(picref->data, picref->linesize,
+ ff_draw_rectangle(frame->data, frame->linesize,
line, pixel_step, hsub, vsub,
x, y, width, height);
}
}
-static inline int is_newline(uint32_t c)
-{
- return (c == '\n' || c == '\r' || c == '\f' || c == '\v');
-}
-
-static int draw_glyphs(DrawTextContext *dtext, AVFilterBufferRef *picref,
+static int draw_glyphs(DrawTextContext *s, AVFrame *frame,
int width, int height, const uint8_t rgbcolor[4], const uint8_t yuvcolor[4], int x, int y)
{
- char *text = HAVE_LOCALTIME_R ? dtext->expanded_text : dtext->text;
+ char *text = HAVE_LOCALTIME_R ? s->expanded_text : s->text;
uint32_t code = 0;
int i;
uint8_t *p;
continue;
dummy.code = code;
- glyph = av_tree_find(dtext->glyphs, &dummy, (void *)glyph_cmp, NULL);
+ glyph = av_tree_find(s->glyphs, &dummy, (void *)glyph_cmp, NULL);
if (glyph->bitmap.pixel_mode != FT_PIXEL_MODE_MONO &&
glyph->bitmap.pixel_mode != FT_PIXEL_MODE_GRAY)
return AVERROR(EINVAL);
- if (dtext->is_packed_rgb) {
- draw_glyph_rgb(picref, &glyph->bitmap,
- dtext->positions[i].x+x, dtext->positions[i].y+y, width, height,
- dtext->pixel_step[0], rgbcolor, dtext->rgba_map);
+ if (s->is_packed_rgb) {
+ draw_glyph_rgb(frame, &glyph->bitmap,
+ s->positions[i].x+x, s->positions[i].y+y, width, height,
+ s->pixel_step[0], rgbcolor, s->rgba_map);
} else {
- draw_glyph_yuv(picref, &glyph->bitmap,
- dtext->positions[i].x+x, dtext->positions[i].y+y, width, height,
- yuvcolor, dtext->hsub, dtext->vsub);
+ draw_glyph_yuv(frame, &glyph->bitmap,
+ s->positions[i].x+x, s->positions[i].y+y, width, height,
+ yuvcolor, s->hsub, s->vsub);
}
}
return 0;
}
-static int draw_text(AVFilterContext *ctx, AVFilterBufferRef *picref,
+static int draw_text(AVFilterContext *ctx, AVFrame *frame,
int width, int height)
{
- DrawTextContext *dtext = ctx->priv;
- uint32_t code = 0, prev_code = 0;
- int x = 0, y = 0, i = 0, ret;
- int text_height, baseline;
- char *text = dtext->text;
- uint8_t *p;
- int str_w = 0, len;
- int y_min = 32000, y_max = -32000;
- FT_Vector delta;
- Glyph *glyph = NULL, *prev_glyph = NULL;
- Glyph dummy = { 0 };
-
-#if HAVE_LOCALTIME_R
- time_t now = time(0);
- struct tm ltime;
- uint8_t *buf = dtext->expanded_text;
- int buf_size = dtext->expanded_text_size;
+ DrawTextContext *s = ctx->priv;
+ int ret;
- if (!buf) {
- buf_size = 2*strlen(dtext->text)+1;
- buf = av_malloc(buf_size);
+ /* draw box */
+ if (s->draw_box)
+ drawbox(frame, s->x, s->y, s->w, s->h,
+ s->box_line, s->pixel_step, s->boxcolor,
+ s->hsub, s->vsub, s->is_packed_rgb,
+ s->rgba_map);
+
+ if (s->shadowx || s->shadowy) {
+ if ((ret = draw_glyphs(s, frame, width, height,
+ s->shadowcolor_rgba,
+ s->shadowcolor,
+ s->x + s->shadowx,
+ s->y + s->shadowy)) < 0)
+ return ret;
}
- localtime_r(&now, <ime);
+ if ((ret = draw_glyphs(s, frame, width, height,
+ s->fontcolor_rgba,
+ s->fontcolor,
+ s->x,
+ s->y)) < 0)
+ return ret;
- do {
- *buf = 1;
- if (strftime(buf, buf_size, dtext->text, <ime) != 0 || *buf == 0)
- break;
- buf_size *= 2;
- } while ((buf = av_realloc(buf, buf_size)));
+ return 0;
+}
- if (!buf)
- return AVERROR(ENOMEM);
- text = dtext->expanded_text = buf;
- dtext->expanded_text_size = buf_size;
-#endif
- if ((len = strlen(text)) > dtext->nb_positions) {
- if (!(dtext->positions =
- av_realloc(dtext->positions, len*sizeof(*dtext->positions))))
- return AVERROR(ENOMEM);
- dtext->nb_positions = len;
- }
+static inline int normalize_double(int *n, double d)
+{
+ int ret = 0;
- x = dtext->x;
- y = dtext->y;
+ if (isnan(d)) {
+ ret = AVERROR(EINVAL);
+ } else if (d > INT_MAX || d < INT_MIN) {
+ *n = d > INT_MAX ? INT_MAX : INT_MIN;
+ ret = AVERROR(EINVAL);
+ } else
+ *n = round(d);
- /* load and cache glyphs */
- for (i = 0, p = text; *p; i++) {
- GET_UTF8(code, *p++, continue;);
+ return ret;
+}
- /* get glyph */
- dummy.code = code;
- glyph = av_tree_find(dtext->glyphs, &dummy, glyph_cmp, NULL);
- if (!glyph)
- load_glyph(ctx, &glyph, code);
+static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
+{
+ AVFilterContext *ctx = inlink->dst;
+ DrawTextContext *s = ctx->priv;
+ int ret = 0;
- y_min = FFMIN(glyph->bbox.yMin, y_min);
- y_max = FFMAX(glyph->bbox.yMax, y_max);
+ if ((ret = dtext_prepare_text(ctx)) < 0) {
+ av_log(ctx, AV_LOG_ERROR, "Can't draw text\n");
+ av_frame_free(&frame);
+ return ret;
}
- text_height = y_max - y_min;
- baseline = y_max;
-
- /* compute and save position for each glyph */
- glyph = NULL;
- for (i = 0, p = text; *p; i++) {
- GET_UTF8(code, *p++, continue;);
-
- /* skip the \n in the sequence \r\n */
- if (prev_code == '\r' && code == '\n')
- continue;
-
- prev_code = code;
- if (is_newline(code)) {
- str_w = FFMAX(str_w, x - dtext->x);
- y += text_height;
- x = dtext->x;
- continue;
- }
-
- /* get glyph */
- prev_glyph = glyph;
- dummy.code = code;
- glyph = av_tree_find(dtext->glyphs, &dummy, glyph_cmp, NULL);
- /* kerning */
- if (dtext->use_kerning && prev_glyph && glyph->code) {
- FT_Get_Kerning(dtext->face, prev_glyph->code, glyph->code,
- ft_kerning_default, &delta);
- x += delta.x >> 6;
- }
-
- if (x + glyph->bbox.xMax >= width) {
- str_w = FFMAX(str_w, x - dtext->x);
- y += text_height;
- x = dtext->x;
- }
-
- /* save position */
- dtext->positions[i].x = x + glyph->bitmap_left;
- dtext->positions[i].y = y - glyph->bitmap_top + baseline;
- if (code == '\t') x = (x / dtext->tabsize + 1)*dtext->tabsize;
- else x += glyph->advance;
+ s->var_values[VAR_T] = frame->pts == AV_NOPTS_VALUE ?
+ NAN : frame->pts * av_q2d(inlink->time_base);
+ s->var_values[VAR_X] =
+ av_expr_eval(s->x_pexpr, s->var_values, &s->prng);
+ s->var_values[VAR_Y] =
+ av_expr_eval(s->y_pexpr, s->var_values, &s->prng);
+ s->var_values[VAR_X] =
+ av_expr_eval(s->x_pexpr, s->var_values, &s->prng);
+
+ s->draw = av_expr_eval(s->d_pexpr, s->var_values, &s->prng);
+
+ normalize_double(&s->x, s->var_values[VAR_X]);
+ normalize_double(&s->y, s->var_values[VAR_Y]);
+
+ if (s->fix_bounds) {
+ if (s->x < 0) s->x = 0;
+ if (s->y < 0) s->y = 0;
+ if ((unsigned)s->x + (unsigned)s->w > inlink->w)
+ s->x = inlink->w - s->w;
+ if ((unsigned)s->y + (unsigned)s->h > inlink->h)
+ s->y = inlink->h - s->h;
}
- str_w = FFMIN(width - dtext->x - 1, FFMAX(str_w, x - dtext->x));
- y = FFMIN(y + text_height, height - 1);
+ s->x &= ~((1 << s->hsub) - 1);
+ s->y &= ~((1 << s->vsub) - 1);
- /* draw box */
- if (dtext->draw_box)
- drawbox(picref, dtext->x, dtext->y, str_w, y-dtext->y,
- dtext->box_line, dtext->pixel_step, dtext->boxcolor,
- dtext->hsub, dtext->vsub, dtext->is_packed_rgb, dtext->rgba_map);
-
- if (dtext->shadowx || dtext->shadowy) {
- if ((ret = draw_glyphs(dtext, picref, width, height, dtext->shadowcolor_rgba,
- dtext->shadowcolor, dtext->shadowx, dtext->shadowy)) < 0)
- return ret;
- }
+ av_dlog(ctx, "n:%d t:%f x:%d y:%d x+w:%d y+h:%d\n",
+ (int)s->var_values[VAR_N], s->var_values[VAR_T],
+ s->x, s->y, s->x+s->w, s->y+s->h);
- if ((ret = draw_glyphs(dtext, picref, width, height, dtext->fontcolor_rgba,
- dtext->fontcolor, 0, 0)) < 0)
- return ret;
-
- return 0;
-}
+ if (s->draw)
+ draw_text(inlink->dst, frame, frame->width, frame->height);
-static void null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) { }
+ s->var_values[VAR_N] += 1.0;
-static void end_frame(AVFilterLink *inlink)
-{
- AVFilterLink *outlink = inlink->dst->outputs[0];
- AVFilterBufferRef *picref = inlink->cur_buf;
+ return ff_filter_frame(inlink->dst->outputs[0], frame);
+}
- draw_text(inlink->dst, picref, picref->video->w, picref->video->h);
+static const AVFilterPad avfilter_vf_drawtext_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .get_video_buffer = ff_null_get_video_buffer,
+ .filter_frame = filter_frame,
+ .config_props = config_input,
+ .needs_writable = 1,
+ },
+ { NULL }
+};
- avfilter_draw_slice(outlink, 0, picref->video->h, 1);
- avfilter_end_frame(outlink);
-}
+static const AVFilterPad avfilter_vf_drawtext_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ },
+ { NULL }
+};
-AVFilter avfilter_vf_drawtext = {
+AVFilter ff_vf_drawtext = {
.name = "drawtext",
.description = NULL_IF_CONFIG_SMALL("Draw text on top of video frames using libfreetype library."),
.priv_size = sizeof(DrawTextContext),
+ .priv_class = &drawtext_class,
.init = init,
.uninit = uninit,
.query_formats = query_formats,
- .inputs = (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 = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO, },
- { .name = NULL}},
+ .inputs = avfilter_vf_drawtext_inputs,
+ .outputs = avfilter_vf_drawtext_outputs,
};
projects / ffmpeg / blobdiff