Re: [FFmpeg-devel] [PATCH] avfilter/vf_freezedetect: add filter to detect frozen input

[Marton Balint]

On Sat, 17 Nov 2018, Paul B Mahol wrote:

On 11/17/18, Marton Balint <c...@passwd.hu> wrote:

On Sun, 11 Nov 2018, Paul B Mahol wrote:

On 11/11/18, Marton Balint <c...@passwd.hu> wrote:
Signed-off-by: Marton Balint <c...@passwd.hu>
---
 Changelog                     |   1 +
 configure                     |   1 +
 doc/filters.texi              |  29 +++++
 libavfilter/Makefile          |   1 +
 libavfilter/allfilters.c      |   1 +
 libavfilter/version.h         |   2 +-
 libavfilter/vf_freezedetect.c | 282
++++++++++++++++++++++++++++++++++++++++++
 7 files changed, 316 insertions(+), 1 deletion(-)
 create mode 100644 libavfilter/vf_freezedetect.c

diff --git a/Changelog b/Changelog
index e38a607025..0eba82b477 100644
--- a/Changelog
+++ b/Changelog
@@ -4,6 +4,7 @@ releases are sorted from youngest to oldest.
 version <next>:
 - tpad filter
 - AV1 decoding support through libdav1d
+- freezedetect filter


[...]

+AVFILTER_DEFINE_CLASS(freezedetect);
+
+static int query_formats(AVFilterContext *ctx)
+{
+    static const enum AVPixelFormat pix_fmts[] = {
+        AV_PIX_FMT_YUV420P,
+        AV_PIX_FMT_YUYV422,
+        AV_PIX_FMT_RGB24,
+        AV_PIX_FMT_BGR24,
+        AV_PIX_FMT_YUV422P,
+        AV_PIX_FMT_YUV444P,
+        AV_PIX_FMT_YUV410P,
+        AV_PIX_FMT_YUV411P,
+        AV_PIX_FMT_GRAY8,
+        AV_PIX_FMT_YUVJ420P,
+        AV_PIX_FMT_YUVJ422P,
+        AV_PIX_FMT_YUVJ444P,
+        AV_PIX_FMT_UYVY422,
+        AV_PIX_FMT_NV12,
+        AV_PIX_FMT_NV21,
+        AV_PIX_FMT_ARGB,
+        AV_PIX_FMT_RGBA,
+        AV_PIX_FMT_ABGR,
+        AV_PIX_FMT_BGRA,
+        AV_PIX_FMT_GRAY16,
+        AV_PIX_FMT_YUV440P,
+        AV_PIX_FMT_YUVJ440P,
+        AV_PIX_FMT_YUVA420P,
+        AV_PIX_FMT_YUV420P16,
+        AV_PIX_FMT_YUV422P16,
+        AV_PIX_FMT_YUV444P16,
+        AV_PIX_FMT_YA8,
+        AV_PIX_FMT_YUV420P9,
+        AV_PIX_FMT_YUV420P10,
+        AV_PIX_FMT_YUV422P10,
+        AV_PIX_FMT_YUV444P9,
+        AV_PIX_FMT_YUV444P10,
+        AV_PIX_FMT_YUV422P9,
+        AV_PIX_FMT_GBRP,
+        AV_PIX_FMT_GBRP9,
+        AV_PIX_FMT_GBRP10,
+        AV_PIX_FMT_GBRP16,
+        AV_PIX_FMT_YUVA422P,
+        AV_PIX_FMT_YUVA444P,
+        AV_PIX_FMT_YUVA420P9,
+        AV_PIX_FMT_YUVA422P9,
+        AV_PIX_FMT_YUVA444P9,
+        AV_PIX_FMT_YUVA420P10,
+        AV_PIX_FMT_YUVA422P10,
+        AV_PIX_FMT_YUVA444P10,
+        AV_PIX_FMT_YUVA420P16,
+        AV_PIX_FMT_YUVA422P16,
+        AV_PIX_FMT_YUVA444P16,
+        AV_PIX_FMT_NV16,
+        AV_PIX_FMT_YVYU422,
+        AV_PIX_FMT_GBRAP,
+        AV_PIX_FMT_GBRAP16,
+        AV_PIX_FMT_YUV420P12,
+        AV_PIX_FMT_YUV420P14,
+        AV_PIX_FMT_YUV422P12,
+        AV_PIX_FMT_YUV422P14,
+        AV_PIX_FMT_YUV444P12,
+        AV_PIX_FMT_YUV444P14,
+        AV_PIX_FMT_GBRP12,
+        AV_PIX_FMT_GBRP14,
+        AV_PIX_FMT_YUVJ411P,
+        AV_PIX_FMT_YUV440P10,
+        AV_PIX_FMT_YUV440P12,
+        AV_PIX_FMT_GBRAP12,
+        AV_PIX_FMT_GBRAP10,
+        AV_PIX_FMT_GRAY12,
+        AV_PIX_FMT_GRAY10,
+        AV_PIX_FMT_GRAY9,
+        AV_PIX_FMT_GRAY14,
+        AV_PIX_FMT_NONE

Please make this list more compact, make use of several items per line.

Ok. I will apply the patch soon.

You sure that packed and semi-planar formats like nv21 work with filter?

Yes, because every plane they use have continous data and every component 
is calculated equally into the sum of absolute differences.

Regards,
Marton
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