On Fri, Jul 19, 2019 at 09:26:06PM +0200, Marton Balint wrote:
>
>
> On Fri, 19 Jul 2019, lance.lmw...@gmail.com wrote:
>
> >From: Limin Wang <lance.lmw...@gmail.com>
> >
> >This patch haven't make other pixel format usable yet to make sure the test
> >result is same with rgb32 format.
> >
> >Signed-off-by: Limin Wang <lance.lmw...@gmail.com>
> >---
> >libavfilter/f_select.c | 34 ++++++++++++++++++++++++++++++----
> >1 file changed, 30 insertions(+), 4 deletions(-)
> >
> >diff --git a/libavfilter/f_select.c b/libavfilter/f_select.c
> >index 1132375758..eed8df34cb 100644
> >--- a/libavfilter/f_select.c
> >+++ b/libavfilter/f_select.c
> >@@ -28,6 +28,8 @@
> >#include "libavutil/fifo.h"
> >#include "libavutil/internal.h"
> >#include "libavutil/opt.h"
> >+#include "libavutil/imgutils.h"
> >+#include "libavutil/pixdesc.h"
> >#include "avfilter.h"
> >#include "audio.h"
> >#include "formats.h"
> >@@ -144,6 +146,10 @@ typedef struct SelectContext {
> > char *expr_str;
> > AVExpr *expr;
> > double var_values[VAR_VARS_NB];
> >+ int bitdepth;
> >+ int nb_planes;
> >+ ptrdiff_t width[4];
> >+ ptrdiff_t height[4];
> > int do_scene_detect; ///< 1 if the expression requires scene
> > detection variables, 0 otherwise
> > ff_scene_sad_fn sad; ///< Sum of the absolute difference
> > function (scene detect only)
> > double prev_mafd; ///< previous MAFD
> > (scene detect only)
> >@@ -202,6 +208,17 @@ static av_cold int init(AVFilterContext *ctx)
> >static int config_input(AVFilterLink *inlink)
> >{
> > SelectContext *select = inlink->dst->priv;
> >+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
> >+
> >+ select->bitdepth = desc->comp[0].depth;
> >+ select->nb_planes = av_pix_fmt_count_planes(inlink->format);
> >+ for (int plane = 0; plane < select->nb_planes; plane++) {
> >+ ptrdiff_t line_size = av_image_get_linesize(inlink->format,
> >inlink->w, plane);
> >+ int vsub = desc->log2_chroma_h;
> >+
> >+ select->width[plane] = line_size >> (select->bitdepth > 8);
> >+ select->height[plane] = plane == 1 || plane == 2 ?
> >AV_CEIL_RSHIFT(inlink->h, vsub) : inlink->h;
> >+ }
> >
> > select->var_values[VAR_N] = 0.0;
> > select->var_values[VAR_SELECTED_N] = 0.0;
> >@@ -242,7 +259,7 @@ static int config_input(AVFilterLink *inlink)
> > inlink->type == AVMEDIA_TYPE_AUDIO ? inlink->sample_rate : NAN;
> >
> > if (CONFIG_SELECT_FILTER && select->do_scene_detect) {
> >- select->sad = ff_scene_sad_get_fn(8);
> >+ select->sad = ff_scene_sad_get_fn(select->bitdepth == 8 ? 8 : 16);
> > if (!select->sad)
> > return AVERROR(EINVAL);
> > }
> >@@ -258,12 +275,21 @@ static double get_scene_score(AVFilterContext *ctx,
> >AVFrame *frame)
> > if (prev_picref &&
> > frame->height == prev_picref->height &&
> > frame->width == prev_picref->width) {
> >- uint64_t sad;
> >+ uint64_t sad = 0;
> > double mafd, diff;
> >+ int count = 0;
> >+
> >+ for (int plane = 0; plane < select->nb_planes; plane++) {
> >+ uint64_t plane_sad;
> >+ select->sad(prev_picref->data[plane],
> >prev_picref->linesize[plane],
> >+ frame->data[plane], frame->linesize[plane],
> >+ select->width[plane], select->height[plane],
> >&plane_sad);
> >+ sad += plane_sad;
> >+ count += select->width[plane] * select->height[plane];
> >+ }
> >
> >- select->sad(prev_picref->data[0], prev_picref->linesize[0],
> >frame->data[0], frame->linesize[0], frame->width * 3, frame->height, &sad);
> > emms_c();
> >- mafd = (double)sad / (frame->width * 3 * frame->height);
> >+ mafd = (double)sad / count;
>
> Still missing normalization to [0..255] here for >8 bitdepth.
By the testing, Passengers_Breakfast_4K.mkv is 10bits sample, it can't detect
the scenecut if using 1<<bitdepth,
Or just remove yuv420p10 support, it's the only 10bit enable pixel format in
the 3/3 patch?
After get more sample for testing it's OK, then change for bitdepth > 8.
>
> Regards,
> Marton
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
> To unsubscribe, visit link above, or email
> ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
