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avfilter/vf_framerate: if metadata lavfi.scd.mafd exists, we'll use it first

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Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
This commit is contained in:
Limin Wang 2019-10-08 23:28:37 +08:00
parent d62d4e05e8
commit 339593ca90
1 changed files with 11 additions and 4 deletions
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15
libavfilter/vf_framerate.c
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@ -71,13 +71,20 @@ static double get_scene_score(AVFilterContext *ctx, AVFrame *crnt, AVFrame *next
if (crnt->height == next->height &&
crnt->width == next->width) {
AVDictionaryEntry *e_mafd = NULL;
uint64_t sad;
double mafd, diff;
double mafd = HUGE_VAL, diff;
char *tail = NULL;
ff_dlog(ctx, "get_scene_score() process\n");
s->sad(crnt->data[0], crnt->linesize[0], next->data[0], next->linesize[0], crnt->width, crnt->height, &sad);
emms_c();
mafd = (double)sad * 100.0 / (crnt->width * crnt->height) / (1 << s->bitdepth);
e_mafd = av_dict_get(next->metadata, "lavfi.scd.mafd", NULL, AV_DICT_MATCH_CASE);
if (e_mafd)
mafd = strtod(e_mafd->value, &tail);
if (*tail || mafd == HUGE_VAL) {
s->sad(crnt->data[0], crnt->linesize[0], next->data[0], next->linesize[0], crnt->width, crnt->height, &sad);
emms_c();
mafd = (double)sad * 100.0 / (crnt->width * crnt->height) / (1 << s->bitdepth);
}
diff = fabs(mafd - s->prev_mafd);
ret = av_clipf(FFMIN(mafd, diff), 0, 100.0);
s->prev_mafd = mafd;