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drawtext: factor draw_glyphs.

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Michael Niedermayer 2011-02-22 01:11:35 +01:00 committed by Anton Khirnov
parent a5b81c317e
commit e73127a443
1 changed files with 41 additions and 27 deletions
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68
libavfilter/vf_drawtext.c
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@ -494,12 +494,50 @@ 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,
int width, int height)
{
char *text = dtext->text;
uint32_t code = 0;
int i;
uint8_t *p;
Glyph *glyph = NULL;
for (i = 0, p = text; *p; i++) {
Glyph dummy = { 0 };
GET_UTF8(code, *p++, continue;);
/* skip new line chars, just go to new line */
if (code == '\n' || code == '\r' || code == '\t')
continue;
dummy.code = code;
glyph = av_tree_find(dtext->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, dtext->positions[i].y, width, height,
dtext->pixel_step[0], dtext->fontcolor_rgba, dtext->rgba_map);
} else {
draw_glyph_yuv(picref, &glyph->bitmap,
dtext->positions[i].x, dtext->positions[i].y, width, height,
dtext->fontcolor, dtext->hsub, dtext->vsub);
}
}
return 0;
}
static int draw_text(AVFilterContext *ctx, AVFilterBufferRef *picref,
int width, int height)
{
DrawTextContext *dtext = ctx->priv;
uint32_t code = 0, prev_code = 0;
int x = 0, y = 0, i = 0;
int x = 0, y = 0, i = 0, ret;
int text_height, baseline;
uint8_t *p;
int str_w = 0;
@ -605,32 +643,8 @@ static int draw_text(AVFilterContext *ctx, AVFilterBufferRef *picref,
dtext->box_line, dtext->pixel_step, dtext->boxcolor,
dtext->hsub, dtext->vsub, dtext->is_packed_rgb, dtext->rgba_map);
/* draw glyphs */
for (i = 0, p = dtext->text; *p; i++) {
Glyph dummy = { 0 };
GET_UTF8(code, *p++, continue;);
/* skip new line chars, just go to new line */
if (is_newline(code) || code == ' ' || code == '\t')
continue;
dummy.code = code;
glyph = av_tree_find(dtext->glyphs, &dummy, 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, dtext->positions[i].y, width, height,
dtext->pixel_step[0], dtext->fontcolor_rgba, dtext->rgba_map);
} else {
draw_glyph_yuv(picref, &glyph->bitmap,
dtext->positions[i].x, dtext->positions[i].y, width, height,
dtext->fontcolor, dtext->hsub, dtext->vsub);
}
}
if ((ret = draw_glyphs(dtext, picref, width, height)) < 0)
return ret;
return 0;
}