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avfilter/vf_minterpolate: correct the mafd calculation

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Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
This commit is contained in:
Limin Wang 2019-09-20 20:08:35 +08:00
parent dd24fdc672
commit 61cc009d53
1 changed files with 4 additions and 2 deletions
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6
libavfilter/vf_minterpolate.c
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@ -185,6 +185,7 @@ typedef struct MIContext {
int64_t out_pts;
int b_width, b_height, b_count;
int log2_mb_size;
int bitdepth;
int scd_method;
int scene_changed;
@ -343,6 +344,7 @@ static int config_input(AVFilterLink *inlink)
mi_ctx->log2_chroma_h = desc->log2_chroma_h;
mi_ctx->log2_chroma_w = desc->log2_chroma_w;
mi_ctx->bitdepth = desc->comp[0].depth;
mi_ctx->nb_planes = av_pix_fmt_count_planes(inlink->format);
@ -383,7 +385,7 @@ static int config_input(AVFilterLink *inlink)
}
if (mi_ctx->scd_method == SCD_METHOD_FDIFF) {
mi_ctx->sad = ff_scene_sad_get_fn(8);
mi_ctx->sad = ff_scene_sad_get_fn(mi_ctx->bitdepth == 8 ? 8 : 16);
if (!mi_ctx->sad)
return AVERROR(EINVAL);
}
@ -843,7 +845,7 @@ static int detect_scene_change(MIContext *mi_ctx)
if (*tail || mafd == HUGE_VAL) {
mi_ctx->sad(p1, linesize1, p2, linesize2, me_ctx->width, me_ctx->height, &sad);
emms_c();
mafd = (double) sad / (me_ctx->height * me_ctx->width * 3);
mafd = (double) sad * 100.0 / (me_ctx->height * me_ctx->width) / (1 << mi_ctx->bitdepth);
}
diff = fabs(mafd - mi_ctx->prev_mafd);
ret = av_clipf(FFMIN(mafd, diff), 0, 100.0);