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Code Issues Releases Activity

avfilter/signalstats: integrate height loop into subfilters

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Clément Bœsch 2014-11-16 21:12:53 +01:00 committed by Clément Bœsch
parent c7e8f610f2
commit 56b98dfc4f
1 changed files with 23 additions and 17 deletions
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40
libavfilter/vf_signalstats.c
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@ -134,9 +134,11 @@ static void burn_frame(SignalstatsContext *s, AVFrame *f, int x, int y)
f->data[2][chromay * f->linesize[2] + chromax] = s->yuv_color[2];
}
static int filter_brng(SignalstatsContext *s, const AVFrame *in, AVFrame *out, int y, int w, int h)
static int filter_brng(SignalstatsContext *s, const AVFrame *in, AVFrame *out, int w, int h)
{
int x, score = 0;
int x, y, score = 0;
for (y = 0; y < h; y++) {
const int yc = y >> s->vsub;
const uint8_t *pluma = &in->data[0][y * in->linesize[0]];
const uint8_t *pchromau = &in->data[1][yc * in->linesize[1]];
@ -154,6 +156,7 @@ static int filter_brng(SignalstatsContext *s, const AVFrame *in, AVFrame *out, i
if (out && filt)
burn_frame(s, out, x, y);
}
}
return score;
}
@ -162,14 +165,16 @@ static int filter_tout_outlier(uint8_t x, uint8_t y, uint8_t z)
return ((abs(x - y) + abs (z - y)) / 2) - abs(z - x) > 4; // make 4 configurable?
}
static int filter_tout(SignalstatsContext *s, const AVFrame *in, AVFrame *out, int y, int w, int h)
static int filter_tout(SignalstatsContext *s, const AVFrame *in, AVFrame *out, int w, int h)
{
const uint8_t *p = in->data[0];
int lw = in->linesize[0];
int x, score = 0, filt;
int x, y, score = 0, filt;
for (y = 0; y < h; y++) {
if (y - 1 < 0 || y + 1 >= h)
return 0;
continue;
// detect two pixels above and below (to eliminate interlace artefacts)
// should check that video format is infact interlaced.
@ -196,35 +201,38 @@ filter_tout_outlier(p[(y-j) * lw + x + i], \
burn_frame(s, out, x, y);
}
}
}
return score;
}
#define VREP_START 4
static int filter_vrep(SignalstatsContext *s, const AVFrame *in, AVFrame *out, int y, int w, int h)
static int filter_vrep(SignalstatsContext *s, const AVFrame *in, AVFrame *out, int w, int h)
{
const uint8_t *p = in->data[0];
const int lw = in->linesize[0];
int x, score, totdiff = 0;
int x, y, score = 0;
for (y = VREP_START; y < h; y++) {
const int y2lw = (y - VREP_START) * lw;
const int ylw = y * lw;
if (y < VREP_START)
return 0;
int filt, totdiff = 0;
for (x = 0; x < w; x++)
totdiff += abs(p[y2lw + x] - p[ylw + x]);
filt = totdiff < w;
score = (totdiff < w) * w;
if (score && out)
score += filt;
if (filt && out)
for (x = 0; x < w; x++)
burn_frame(s, out, x, y);
return score;
}
return score * w;
}
static const struct {
const char *name;
int (*process)(SignalstatsContext *s, const AVFrame *in, AVFrame *out, int y, int w, int h);
int (*process)(SignalstatsContext *s, const AVFrame *in, AVFrame *out, int w, int h);
} filters_def[] = {
{"TOUT", filter_tout},
{"VREP", filter_vrep},
@ -309,14 +317,12 @@ static int filter_frame(AVFilterLink *link, AVFrame *in)
cpw += prev->linesize[1];
}
for (j = 0; j < link->h; j++) {
for (fil = 0; fil < FILT_NUMB; fil ++) {
if (s->filters & 1<<fil) {
AVFrame *dbg = out != in && s->outfilter == fil ? out : NULL;
filtot[fil] += filters_def[fil].process(s, in, dbg, j, link->w, link->h);
filtot[fil] = filters_def[fil].process(s, in, dbg, link->w, link->h);
}
}
}
// find low / high based on histogram percentile
// these only need to be calculated once.