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Code Issues Releases Activity

deshake: limit deshake to specific area to search for motion vectors.

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Paul Flinders 2011-10-20 00:39:34 +02:00 committed by Michael Niedermayer
parent 1373923ddf
commit 9ef714328c
1 changed files with 44 additions and 4 deletions
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48
libavfilter/vf_deshake.c
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@ -92,6 +92,10 @@ typedef struct {
int refcount; ///< Number of reference frames (defines averaging window)
FILE *fp;
Transform avg;
int cw; ///< Crop motion search to this box
int ch;
int cx;
int cy;
} DeshakeContext;
static int cmp(const double *a, const double *b)
@ -341,8 +345,15 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
deshake->search = EXHAUSTIVE;
deshake->refcount = 20;
deshake->cw = -1;
deshake->ch = -1;
deshake->cx = -1;
deshake->cy = -1;
if (args) {
sscanf(args, "%d:%d:%d:%d:%d:%d:%255s", &deshake->rx, &deshake->ry, (int *)&deshake->edge,
sscanf(args, "%d:%d:%d:%d:%d:%d:%d:%d:%d:%d:%255s",
&deshake->cx, &deshake->cy, &deshake->cw, &deshake->ch,
&deshake->rx, &deshake->ry, (int *)&deshake->edge,
&deshake->blocksize, &deshake->contrast, (int *)&deshake->search, filename);
deshake->blocksize /= 2;
@ -353,13 +364,22 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
deshake->blocksize = av_clip(deshake->blocksize, 4, 128);
deshake->contrast = av_clip(deshake->contrast, 1, 255);
deshake->search = av_clip(deshake->search, EXHAUSTIVE, SEARCH_COUNT - 1);
}
if (*filename)
deshake->fp = fopen(filename, "w");
if (deshake->fp)
fwrite("Ori x, Avg x, Fin x, Ori y, Avg y, Fin y, Ori angle, Avg angle, Fin angle, Ori zoom, Avg zoom, Fin zoom\n", sizeof(char), 104, deshake->fp);
av_log(ctx, AV_LOG_INFO, "rx: %d, ry: %d, edge: %d blocksize: %d contrast: %d search: %d\n",
// Quadword align left edge of box for MMX code, adjust width if necessary
// to keep right margin
if (deshake->cx > 0) {
deshake->cw += deshake->cx - (deshake->cx & ~15);
deshake->cx &= ~15;
}
av_log(ctx, AV_LOG_INFO, "cx: %d, cy: %d, cw: %d, ch: %d, rx: %d, ry: %d, edge: %d blocksize: %d contrast: %d search: %d\n",
deshake->cx, deshake->cy, deshake->cw, deshake->ch,
deshake->rx, deshake->ry, deshake->edge, deshake->blocksize * 2, deshake->contrast, deshake->search);
return 0;
@ -414,8 +434,28 @@ static void end_frame(AVFilterLink *link)
char tmp[256];
Transform orig;
// Find the most likely global motion for the current frame
find_motion(deshake, (deshake->ref == NULL) ? in->data[0] : deshake->ref->data[0], in->data[0], link->w, link->h, in->linesize[0], &t);
if (deshake->cx < 0 || deshake->cy < 0 || deshake->cw < 0 || deshake->ch < 0) {
// Find the most likely global motion for the current frame
find_motion(deshake, (deshake->ref == NULL) ? in->data[0] : deshake->ref->data[0], in->data[0], link->w, link->h, in->linesize[0], &t);
} else {
uint8_t *src1 = (deshake->ref == NULL) ? in->data[0] : deshake->ref->data[0];
uint8_t *src2 = in->data[0];
deshake->cx = FFMIN(deshake->cx, link->w);
deshake->cy = FFMIN(deshake->cy, link->h);
if ((unsigned)deshake->cx + (unsigned)deshake->cw > link->w) deshake->cw = link->w - deshake->cx;
if ((unsigned)deshake->cy + (unsigned)deshake->ch > link->h) deshake->ch = link->h - deshake->cy;
// Quadword align right margin
deshake->cw &= ~15;
src1 += deshake->cy * in->linesize[0] + deshake->cx;
src2 += deshake->cy * in->linesize[0] + deshake->cx;
find_motion(deshake, src1, src2, deshake->cw, deshake->ch, in->linesize[0], &t);
}
// Copy transform so we can output it later to compare to the smoothed value
orig.vector.x = t.vector.x;