static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
AVFilterContext *ctx = inlink->dst;
BlackFrameContext *s = ctx->priv;
int x, i;
int pblack = 0;
uint8_t *p = frame->data[0];
AVDictionary **metadata;
char buf[32];
for (i = 0; i < frame->height; i++) {
for (x = 0; x < inlink->w; x++)
s->nblack += p[x] < s->bthresh;
p += frame->linesize[0];
}
if (frame->key_frame)
s->last_keyframe = s->frame;
pblack = s->nblack * 100 / (inlink->w * inlink->h);
if (pblack >= s->bamount) {
metadata = avpriv_frame_get_metadatap(frame);
av_log(ctx, AV_LOG_INFO, "frame:%u pblack:%u pts:%"PRId64" t:%f "
"type:%c last_keyframe:%d\n",
s->frame, pblack, frame->pts,
frame->pts == AV_NOPTS_VALUE ? -1 : frame->pts * av_q2d(inlink->time_base),
av_get_picture_type_char(frame->pict_type), s->last_keyframe);
SET_META("lavfi.blackframe.pblack", "%u", pblack);
}
s->frame++;
s->nblack = 0;
return ff_filter_frame(inlink->dst->outputs[0], frame);
}
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
AVFilterContext *ctx = inlink->dst;
BBoxContext *bbox = ctx->priv;
FFBoundingBox box;
int has_bbox, w, h;
has_bbox =
ff_calculate_bounding_box(&box,
frame->data[0], frame->linesize[0],
inlink->w, inlink->h, bbox->min_val);
w = box.x2 - box.x1 + 1;
h = box.y2 - box.y1 + 1;
av_log(ctx, AV_LOG_INFO,
"n:%"PRId64" pts:%s pts_time:%s", inlink->frame_count_out,
av_ts2str(frame->pts), av_ts2timestr(frame->pts, &inlink->time_base));
if (has_bbox) {
AVDictionary **metadata = &frame->metadata;
SET_META("lavfi.bbox.x1", box.x1)
SET_META("lavfi.bbox.x2", box.x2)
SET_META("lavfi.bbox.y1", box.y1)
SET_META("lavfi.bbox.y2", box.y2)
SET_META("lavfi.bbox.w", w)
SET_META("lavfi.bbox.h", h)
av_log(ctx, AV_LOG_INFO,
" x1:%d x2:%d y1:%d y2:%d w:%d h:%d"
" crop=%d:%d:%d:%d drawbox=%d:%d:%d:%d",
box.x1, box.x2, box.y1, box.y2, w, h,
w, h, box.x1, box.y1, /* crop params */
box.x1, box.y1, w, h); /* drawbox params */
}
av_log(ctx, AV_LOG_INFO, "\n");
return ff_filter_frame(inlink->dst->outputs[0], frame);
}
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
AVFilterContext *ctx = inlink->dst;
CropDetectContext *s = ctx->priv;
int bpp = s->max_pixsteps[0];
int w, h, x, y, shrink_by;
AVDictionary **metadata;
int outliers, last_y;
int limit = round(s->limit);
// ignore first 2 frames - they may be empty
if (++s->frame_nb > 0) {
metadata = avpriv_frame_get_metadatap(frame);
// Reset the crop area every reset_count frames, if reset_count is > 0
if (s->reset_count > 0 && s->frame_nb > s->reset_count) {
s->x1 = frame->width - 1;
s->y1 = frame->height - 1;
s->x2 = 0;
s->y2 = 0;
s->frame_nb = 1;
}
#define FIND(DST, FROM, NOEND, INC, STEP0, STEP1, LEN) \
outliers = 0;\
for (last_y = y = FROM; NOEND; y = y INC) {\
if (checkline(ctx, frame->data[0] + STEP0 * y, STEP1, LEN, bpp) > limit) {\
if (++outliers > s->max_outliers) { \
DST = last_y;\
break;\
}\
} else\
last_y = y INC;\
}
FIND(s->y1, 0, y < s->y1, +1, frame->linesize[0], bpp, frame->width);
FIND(s->y2, frame->height - 1, y > FFMAX(s->y2, s->y1), -1, frame->linesize[0], bpp, frame->width);
FIND(s->x1, 0, y < s->x1, +1, bpp, frame->linesize[0], frame->height);
FIND(s->x2, frame->width - 1, y > FFMAX(s->x2, s->x1), -1, bpp, frame->linesize[0], frame->height);
// round x and y (up), important for yuv colorspaces
// make sure they stay rounded!
x = (s->x1+1) & ~1;
y = (s->y1+1) & ~1;
w = s->x2 - x + 1;
h = s->y2 - y + 1;
// w and h must be divisible by 2 as well because of yuv
// colorspace problems.
if (s->round <= 1)
s->round = 16;
if (s->round % 2)
s->round *= 2;
shrink_by = w % s->round;
w -= shrink_by;
x += (shrink_by/2 + 1) & ~1;
shrink_by = h % s->round;
h -= shrink_by;
y += (shrink_by/2 + 1) & ~1;
SET_META("lavfi.cropdetect.x1", s->x1);
SET_META("lavfi.cropdetect.x2", s->x2);
SET_META("lavfi.cropdetect.y1", s->y1);
SET_META("lavfi.cropdetect.y2", s->y2);
SET_META("lavfi.cropdetect.w", w);
SET_META("lavfi.cropdetect.h", h);
SET_META("lavfi.cropdetect.x", x);
SET_META("lavfi.cropdetect.y", y);
av_log(ctx, AV_LOG_INFO,
"x1:%d x2:%d y1:%d y2:%d w:%d h:%d x:%d y:%d pts:%"PRId64" t:%f crop=%d:%d:%d:%d\n",
s->x1, s->x2, s->y1, s->y2, w, h, x, y, frame->pts,
frame->pts == AV_NOPTS_VALUE ? -1 : frame->pts * av_q2d(inlink->time_base),
w, h, x, y);
}
return ff_filter_frame(inlink->dst->outputs[0], frame);
}
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
AVFilterContext *ctx = inlink->dst;
CropDetectContext *s = ctx->priv;
int bpp = s->max_pixsteps[0];
int w, h, x, y, shrink_by;
AVDictionary **metadata;
// ignore first 2 frames - they may be empty
if (++s->frame_nb > 0) {
metadata = avpriv_frame_get_metadatap(frame);
// Reset the crop area every reset_count frames, if reset_count is > 0
if (s->reset_count > 0 && s->frame_nb > s->reset_count) {
s->x1 = frame->width - 1;
s->y1 = frame->height - 1;
s->x2 = 0;
s->y2 = 0;
s->frame_nb = 1;
}
for (y = 0; y < s->y1; y++) {
if (checkline(ctx, frame->data[0] + frame->linesize[0] * y, bpp, frame->width, bpp) > s->limit) {
s->y1 = y;
break;
}
}
for (y = frame->height - 1; y > FFMAX(s->y2, s->y1); y--) {
if (checkline(ctx, frame->data[0] + frame->linesize[0] * y, bpp, frame->width, bpp) > s->limit) {
s->y2 = y;
break;
}
}
for (y = 0; y < s->x1; y++) {
if (checkline(ctx, frame->data[0] + bpp*y, frame->linesize[0], frame->height, bpp) > s->limit) {
s->x1 = y;
break;
}
}
for (y = frame->width - 1; y > FFMAX(s->x2, s->x1); y--) {
if (checkline(ctx, frame->data[0] + bpp*y, frame->linesize[0], frame->height, bpp) > s->limit) {
s->x2 = y;
break;
}
}
// round x and y (up), important for yuv colorspaces
// make sure they stay rounded!
x = (s->x1+1) & ~1;
y = (s->y1+1) & ~1;
w = s->x2 - x + 1;
h = s->y2 - y + 1;
// w and h must be divisible by 2 as well because of yuv
// colorspace problems.
if (s->round <= 1)
s->round = 16;
if (s->round % 2)
s->round *= 2;
shrink_by = w % s->round;
w -= shrink_by;
x += (shrink_by/2 + 1) & ~1;
shrink_by = h % s->round;
h -= shrink_by;
y += (shrink_by/2 + 1) & ~1;
SET_META("lavfi.cropdetect.x1", s->x1);
SET_META("lavfi.cropdetect.x2", s->x2);
SET_META("lavfi.cropdetect.y1", s->y1);
SET_META("lavfi.cropdetect.y2", s->y2);
SET_META("lavfi.cropdetect.w", w);
SET_META("lavfi.cropdetect.h", h);
SET_META("lavfi.cropdetect.x", x);
SET_META("lavfi.cropdetect.y", y);
av_log(ctx, AV_LOG_INFO,
"x1:%d x2:%d y1:%d y2:%d w:%d h:%d x:%d y:%d pts:%"PRId64" t:%f crop=%d:%d:%d:%d\n",
s->x1, s->x2, s->y1, s->y2, w, h, x, y, frame->pts,
frame->pts == AV_NOPTS_VALUE ? -1 : frame->pts * av_q2d(inlink->time_base),
w, h, x, y);
}
return ff_filter_frame(inlink->dst->outputs[0], frame);
}
