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avfilter/avf_showcqt: draw text optionally

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2015-09-01 12:33:08 +00:00
parent 92bfc3cd03
commit 1c853d5727
1 changed files with 14 additions and 2 deletions
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16
libavfilter/avf_showcqt.c
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@ -92,6 +92,7 @@ typedef struct {
float gamma2; /* gamma of bargraph */
int fps; /* the required fps is so strict, so it's enough to be int, but 24000/1001 etc cannot be encoded */
int count; /* fps * count = transform rate */
int draw_text;
} ShowCQTContext;
#define OFFSET(x) offsetof(ShowCQTContext, x)
@ -109,6 +110,7 @@ static const AVOption showcqt_options[] = {
{ "count", "set number of transform per frame", OFFSET(count), AV_OPT_TYPE_INT, { .i64 = 6 }, 1, 30, FLAGS },
{ "fontfile", "set font file", OFFSET(fontfile), AV_OPT_TYPE_STRING, { .str = NULL }, CHAR_MIN, CHAR_MAX, FLAGS },
{ "fontcolor", "set font color", OFFSET(fontcolor), AV_OPT_TYPE_STRING, { .str = FONTCOLOR_DEFAULT }, CHAR_MIN, CHAR_MAX, FLAGS },
{ "text", "draw text", OFFSET(draw_text), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
{ NULL }
};
@ -651,7 +653,7 @@ static int plot_cqt(AVFilterLink *inlink)
}
/* drawing font */
if (s->font_alpha) {
if (s->font_alpha && s->draw_text) {
for (y = 0; y < font_height; y++) {
uint8_t *lineptr = data + (spectogram_height + y) * linesize;
uint8_t *spectogram_src = s->spectogram + s->spectogram_index * linesize;
@ -664,7 +666,7 @@ static int plot_cqt(AVFilterLink *inlink)
fontcolor_value += 3;
}
}
} else {
} else if (s->draw_text) {
for (y = 0; y < font_height; y++) {
uint8_t *lineptr = data + (spectogram_height + y) * linesize;
memcpy(lineptr, s->spectogram + s->spectogram_index * linesize, video_width*3);
@ -699,6 +701,16 @@ static int plot_cqt(AVFilterLink *inlink)
}
}
}
} else {
for (y = 0; y < font_height; y++) {
uint8_t *lineptr = data + (spectogram_height + y) * linesize;
uint8_t *spectogram_src = s->spectogram + s->spectogram_index * linesize;
for (x = 0; x < video_width; x++) {
lineptr[3*x] = spectogram_src[3*x];
lineptr[3*x+1] = spectogram_src[3*x+1];
lineptr[3*x+2] = spectogram_src[3*x+2];
}
}
}
/* drawing spectogram/sonogram */