#include "internal.h"
#include "video.h"
-#undef time
-
#include <ft2build.h>
-#include <freetype/config/ftheader.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H
} 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, {.i64=0}, 0, 1 },
-{"fontsize", "set font size", OFFSET(fontsize), AV_OPT_TYPE_INT, {.i64=16}, 1, 72 },
-{"x", "set x", OFFSET(x_expr), AV_OPT_TYPE_STRING, {.str="0"}, CHAR_MIN, CHAR_MAX },
-{"y", "set y", OFFSET(y_expr), AV_OPT_TYPE_STRING, {.str="0"}, CHAR_MIN, CHAR_MAX },
-{"shadowx", "set x", OFFSET(shadowx), AV_OPT_TYPE_INT, {.i64=0}, INT_MIN, INT_MAX },
-{"shadowy", "set y", OFFSET(shadowy), AV_OPT_TYPE_INT, {.i64=0}, INT_MIN, INT_MAX },
-{"tabsize", "set tab size", OFFSET(tabsize), AV_OPT_TYPE_INT, {.i64=4}, 0, INT_MAX },
-{"draw", "if false do not draw", OFFSET(d_expr), AV_OPT_TYPE_STRING, {.str="1"}, CHAR_MIN, CHAR_MAX },
-{"fix_bounds", "if true, check and fix text coords to avoid clipping",
- OFFSET(fix_bounds), AV_OPT_TYPE_INT, {.i64=1}, 0, 1 },
-
-/* 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, 0, "ft_load_flags" },
-{"default", "set default", 0, AV_OPT_TYPE_CONST, {.i64 = FT_LOAD_DEFAULT}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"no_scale", "set no_scale", 0, AV_OPT_TYPE_CONST, {.i64 = FT_LOAD_NO_SCALE}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"no_hinting", "set no_hinting", 0, AV_OPT_TYPE_CONST, {.i64 = FT_LOAD_NO_HINTING}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"render", "set render", 0, AV_OPT_TYPE_CONST, {.i64 = FT_LOAD_RENDER}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"no_bitmap", "set no_bitmap", 0, AV_OPT_TYPE_CONST, {.i64 = FT_LOAD_NO_BITMAP}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"vertical_layout", "set vertical_layout", 0, AV_OPT_TYPE_CONST, {.i64 = FT_LOAD_VERTICAL_LAYOUT}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"force_autohint", "set force_autohint", 0, AV_OPT_TYPE_CONST, {.i64 = FT_LOAD_FORCE_AUTOHINT}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"crop_bitmap", "set crop_bitmap", 0, AV_OPT_TYPE_CONST, {.i64 = FT_LOAD_CROP_BITMAP}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"pedantic", "set pedantic", 0, AV_OPT_TYPE_CONST, {.i64 = 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, {.i64 = FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"no_recurse", "set no_recurse", 0, AV_OPT_TYPE_CONST, {.i64 = FT_LOAD_NO_RECURSE}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"ignore_transform", "set ignore_transform", 0, AV_OPT_TYPE_CONST, {.i64 = FT_LOAD_IGNORE_TRANSFORM}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"monochrome", "set monochrome", 0, AV_OPT_TYPE_CONST, {.i64 = FT_LOAD_MONOCHROME}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"linear_design", "set linear_design", 0, AV_OPT_TYPE_CONST, {.i64 = FT_LOAD_LINEAR_DESIGN}, INT_MIN, INT_MAX, 0, "ft_load_flags" },
-{"no_autohint", "set no_autohint", 0, AV_OPT_TYPE_CONST, {.i64 = 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)
+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 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 int dtext_prepare_text(AVFilterContext *ctx)
{
- DrawTextContext *dtext = ctx->priv;
+ 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 = dtext->text;
+ char *text = s->text;
uint8_t *p;
int str_w = 0, len;
int y_min = 32000, y_max = -32000;
#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;
+ uint8_t *buf = s->expanded_text;
+ int buf_size = s->expanded_text_size;
if (!buf)
- buf_size = 2*strlen(dtext->text)+1;
+ 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, dtext->text, <ime) != 0 || *buf == 0)
+ if (strftime(buf, buf_size, s->text, <ime) != 0 || *buf == 0)
break;
buf_size *= 2;
}
if (!buf)
return AVERROR(ENOMEM);
- text = dtext->expanded_text = buf;
- dtext->expanded_text_size = buf_size;
+ text = s->expanded_text = buf;
+ s->expanded_text_size = buf_size;
#endif
- if ((len = strlen(text)) > dtext->nb_positions) {
- FT_Vector *p = av_realloc(dtext->positions,
- len * sizeof(*dtext->positions));
+ if ((len = strlen(text)) > s->nb_positions) {
+ FT_Vector *p = av_realloc(s->positions,
+ len * sizeof(*s->positions));
if (!p) {
- av_freep(dtext->positions);
- dtext->nb_positions = 0;
+ av_freep(s->positions);
+ s->nb_positions = 0;
return AVERROR(ENOMEM);
} else {
- dtext->positions = p;
- dtext->nb_positions = len;
+ s->positions = p;
+ s->nb_positions = len;
}
}
/* get glyph */
dummy.code = code;
- glyph = av_tree_find(dtext->glyphs, &dummy, glyph_cmp, NULL);
+ glyph = av_tree_find(s->glyphs, &dummy, glyph_cmp, NULL);
if (!glyph) {
ret = load_glyph(ctx, &glyph, code);
if (ret)
prev_code = code;
if (is_newline(code)) {
- str_w = FFMAX(str_w, x - dtext->x);
+ 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(dtext->glyphs, &dummy, glyph_cmp, NULL);
+ glyph = av_tree_find(s->glyphs, &dummy, glyph_cmp, NULL);
/* kerning */
- if (dtext->use_kerning && prev_glyph && glyph->code) {
- FT_Get_Kerning(dtext->face, prev_glyph->code, glyph->code,
+ 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;
}
}
/* 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;
+ 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);
- dtext->w = str_w;
- dtext->var_values[VAR_TEXT_W] = dtext->var_values[VAR_TW] = dtext->w;
- dtext->h = y;
- dtext->var_values[VAR_TEXT_H] = dtext->var_values[VAR_TH] = dtext->h;
+ 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)
{
AVFilterContext *ctx = inlink->dst;
- DrawTextContext *dtext = ctx->priv;
- const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[inlink->format];
+ 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;
- dtext->var_values[VAR_E ] = M_E;
- dtext->var_values[VAR_PHI] = M_PHI;
- dtext->var_values[VAR_PI ] = M_PI;
+ s->var_values[VAR_E ] = M_E;
+ s->var_values[VAR_PHI] = M_PHI;
+ s->var_values[VAR_PI ] = M_PI;
- dtext->var_values[VAR_MAIN_W] =
- dtext->var_values[VAR_MW] = ctx->inputs[0]->w;
- dtext->var_values[VAR_MAIN_H] =
- dtext->var_values[VAR_MH] = ctx->inputs[0]->h;
+ 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;
- dtext->var_values[VAR_X] = 0;
- dtext->var_values[VAR_Y] = 0;
- dtext->var_values[VAR_N] = 0;
- dtext->var_values[VAR_T] = NAN;
+ s->var_values[VAR_X] = 0;
+ s->var_values[VAR_Y] = 0;
+ s->var_values[VAR_T] = NAN;
- av_lfg_init(&dtext->prng, av_get_random_seed());
+ av_lfg_init(&s->prng, av_get_random_seed());
- if ((ret = av_expr_parse(&dtext->x_pexpr, dtext->x_expr, var_names,
+ 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(&dtext->y_pexpr, dtext->y_expr, var_names,
+ (ret = av_expr_parse(&s->y_pexpr, s->y_expr, var_names,
NULL, NULL, fun2_names, fun2, 0, ctx)) < 0 ||
- (ret = av_expr_parse(&dtext->d_pexpr, dtext->d_expr, var_names,
+ (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];
}
- dtext->draw = 1;
+ s->draw = 1;
return dtext_prepare_text(ctx);
}
(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 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;
+ DrawTextContext *s = ctx->priv;
int ret;
/* draw box */
- if (dtext->draw_box)
- drawbox(picref, dtext->x, dtext->y, dtext->w, dtext->h,
- 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->x + dtext->shadowx,
- dtext->y + dtext->shadowy)) < 0)
+ 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;
}
- if ((ret = draw_glyphs(dtext, picref, width, height,
- dtext->fontcolor_rgba,
- dtext->fontcolor,
- dtext->x,
- dtext->y)) < 0)
+ if ((ret = draw_glyphs(s, frame, width, height,
+ s->fontcolor_rgba,
+ s->fontcolor,
+ s->x,
+ s->y)) < 0)
return ret;
return 0;
}
-static int null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
-{
- return 0;
-}
-
static inline int normalize_double(int *n, double d)
{
int ret = 0;
return ret;
}
-static int start_frame(AVFilterLink *inlink, AVFilterBufferRef *inpicref)
+static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
AVFilterContext *ctx = inlink->dst;
- DrawTextContext *dtext = ctx->priv;
- AVFilterBufferRef *buf_out;
+ DrawTextContext *s = ctx->priv;
int ret = 0;
if ((ret = dtext_prepare_text(ctx)) < 0) {
av_log(ctx, AV_LOG_ERROR, "Can't draw text\n");
+ av_frame_free(&frame);
return ret;
}
- dtext->var_values[VAR_T] = inpicref->pts == AV_NOPTS_VALUE ?
- NAN : inpicref->pts * av_q2d(inlink->time_base);
- dtext->var_values[VAR_X] =
- av_expr_eval(dtext->x_pexpr, dtext->var_values, &dtext->prng);
- dtext->var_values[VAR_Y] =
- av_expr_eval(dtext->y_pexpr, dtext->var_values, &dtext->prng);
- dtext->var_values[VAR_X] =
- av_expr_eval(dtext->x_pexpr, dtext->var_values, &dtext->prng);
-
- dtext->draw = av_expr_eval(dtext->d_pexpr, dtext->var_values, &dtext->prng);
-
- normalize_double(&dtext->x, dtext->var_values[VAR_X]);
- normalize_double(&dtext->y, dtext->var_values[VAR_Y]);
-
- if (dtext->fix_bounds) {
- if (dtext->x < 0) dtext->x = 0;
- if (dtext->y < 0) dtext->y = 0;
- if ((unsigned)dtext->x + (unsigned)dtext->w > inlink->w)
- dtext->x = inlink->w - dtext->w;
- if ((unsigned)dtext->y + (unsigned)dtext->h > inlink->h)
- dtext->y = inlink->h - dtext->h;
+ 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;
}
- dtext->x &= ~((1 << dtext->hsub) - 1);
- dtext->y &= ~((1 << dtext->vsub) - 1);
+ s->x &= ~((1 << s->hsub) - 1);
+ s->y &= ~((1 << s->vsub) - 1);
av_dlog(ctx, "n:%d t:%f x:%d y:%d x+w:%d y+h:%d\n",
- (int)dtext->var_values[VAR_N], dtext->var_values[VAR_T],
- dtext->x, dtext->y, dtext->x+dtext->w, dtext->y+dtext->h);
-
- buf_out = avfilter_ref_buffer(inpicref, ~0);
- if (!buf_out)
- return AVERROR(ENOMEM);
+ (int)s->var_values[VAR_N], s->var_values[VAR_T],
+ s->x, s->y, s->x+s->w, s->y+s->h);
- return ff_start_frame(inlink->dst->outputs[0], buf_out);
-}
+ if (s->draw)
+ draw_text(inlink->dst, frame, frame->width, frame->height);
-static int end_frame(AVFilterLink *inlink)
-{
- AVFilterLink *outlink = inlink->dst->outputs[0];
- AVFilterBufferRef *picref = inlink->cur_buf;
- DrawTextContext *dtext = inlink->dst->priv;
- int ret;
+ s->var_values[VAR_N] += 1.0;
- if (dtext->draw)
- draw_text(inlink->dst, picref, picref->video->w, picref->video->h);
+ return ff_filter_frame(inlink->dst->outputs[0], frame);
+}
- dtext->var_values[VAR_N] += 1.0;
+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 }
+};
- if ((ret = ff_draw_slice(outlink, 0, picref->video->h, 1)) < 0 ||
- (ret = ff_end_frame(outlink)) < 0)
- return ret;
- return 0;
-}
+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 = (const AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .get_video_buffer = ff_null_get_video_buffer,
- .start_frame = 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}},
+ .inputs = avfilter_vf_drawtext_inputs,
+ .outputs = avfilter_vf_drawtext_outputs,
};
projects / ffmpeg / blobdiff