[x265] [PATCH 1/14] Add command line parameter for mcstf feature

[Snehaa Giridharan]

>From c6a826d9c98a4328a605cba8c216c38754db22dc Mon Sep 17 00:00:00 2001
From: ashok2022 <ashok at multicorewareinc.com>
Date: Wed, 21 Sep 2022 17:16:10 +0530
Subject: [PATCH] Add command line parameter for mcstf feature

---
 source/common/param.cpp | 14 +++++++++++++-
 source/x265.h           |  4 ++++
 source/x265cli.cpp      |  1 +
 source/x265cli.h        |  2 ++
 4 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/source/common/param.cpp b/source/common/param.cpp
index ed6973d9c..0bc9f7f74 100755
--- a/source/common/param.cpp
+++ b/source/common/param.cpp
@@ -380,6 +380,10 @@ void x265_param_default(x265_param* param)
     param->bEnableSvtHevc = 0;
     param->svtHevcParam = NULL;

+    /* MCTF */
+    param->bEnableGopBasedTemporalFilter = 0;
+    param->temporalFilterStrength = 0.95;
+
 #ifdef SVT_HEVC
     param->svtHevcParam = svtParam;
     svt_param_default(param);
@@ -1464,6 +1468,7 @@ int x265_param_parse(x265_param* p, const char* name,
const char* value)
         OPT("eos") p->bEnableEndOfSequence = atobool(value);
         /* Film grain characterstics model filename */
         OPT("film-grain") p->filmGrain = (char* )value;
+        OPT("mctf") p->bEnableGopBasedTemporalFilter = atobool(value);
         else
             return X265_PARAM_BAD_NAME;
     }
@@ -1916,6 +1921,11 @@ int x265_check_params(x265_param* param)
         param->bSingleSeiNal = 0;
         x265_log(param, X265_LOG_WARNING, "None of the SEI messages are
enabled. Disabling Single SEI NAL\n");
     }
+    if (param->bEnableGopBasedTemporalFilter && (param->frameNumThreads >
1))
+    {
+        param->bEnableGopBasedTemporalFilter = 0;
+        x265_log(param, X265_LOG_WARNING, "MCTF can be enabled with frame
thread = 1 only. Disabling MCTF\n");
+    }
     CHECK(param->confWinRightOffset < 0, "Conformance Window Right Offset
must be 0 or greater");
     CHECK(param->confWinBottomOffset < 0, "Conformance Window Bottom
Offset must be 0 or greater");
     CHECK(param->decoderVbvMaxRate < 0, "Invalid Decoder Vbv Maxrate.
Value can not be less than zero");
@@ -2359,6 +2369,7 @@ char *x265_param2string(x265_param* p, int padx, int
pady)
     BOOL(p->bliveVBV2pass, "vbv-live-multi-pass");
     if (p->filmGrain)
         s += sprintf(s, " film-grain=%s", p->filmGrain); // Film grain
characteristics model filename
+    BOOL(p->bEnableGopBasedTemporalFilter, "mctf");
 #undef BOOL
     return buf;
 }
@@ -2722,7 +2733,8 @@ void x265_copy_params(x265_param* dst, x265_param*
src)
     dst->bwdRefQpDelta = src->bwdRefQpDelta;
     dst->bwdNonRefQpDelta = src->bwdNonRefQpDelta;
     dst->bField = src->bField;
-
+    dst->bEnableGopBasedTemporalFilter =
src->bEnableGopBasedTemporalFilter;
+    dst->temporalFilterStrength = src->temporalFilterStrength;
     dst->confWinRightOffset = src->confWinRightOffset;
     dst->confWinBottomOffset = src->confWinBottomOffset;
     dst->bliveVBV2pass = src->bliveVBV2pass;
diff --git a/source/x265.h b/source/x265.h
index 5d242d653..4b3177a94 100644
--- a/source/x265.h
+++ b/source/x265.h
@@ -1992,6 +1992,10 @@ typedef struct x265_param

     /* Film Grain Characteristic file */
     char* filmGrain;
+
+    /*Motion compensated temporal filter*/
+    int      bEnableGopBasedTemporalFilter;
+    double   temporalFilterStrength;
 } x265_param;

 /* x265_param_alloc:
diff --git a/source/x265cli.cpp b/source/x265cli.cpp
index f6ba0ab30..69d77e7bf 100755
--- a/source/x265cli.cpp
+++ b/source/x265cli.cpp
@@ -370,6 +370,7 @@ namespace X265_NS {
         H0("   --lowpass-dct                 Use low-pass subband dct
approximation. Default %s\n", OPT(param->bLowPassDct));
         H0("   --[no-]frame-dup              Enable Frame duplication.
Default %s\n", OPT(param->bEnableFrameDuplication));
         H0("   --dup-threshold <integer>     PSNR threshold for Frame
duplication. Default %d\n", param->dupThreshold);
+        H0("   --[no-]mctf                   Enable GOP based temporal
filter. Default %d\n", param->bEnableGopBasedTemporalFilter);
 #ifdef SVT_HEVC
         H0("   --[no]svt                     Enable SVT HEVC encoder
%s\n", OPT(param->bEnableSvtHevc));
         H0("   --[no-]svt-hme                Enable Hierarchial motion
estimation(HME) in SVT HEVC encoder \n");
diff --git a/source/x265cli.h b/source/x265cli.h
index 7072f7616..29d85f96f 100644
--- a/source/x265cli.h
+++ b/source/x265cli.h
@@ -356,6 +356,8 @@ static const struct option long_options[] =
     { "frame-dup",            no_argument, NULL, 0 },
     { "no-frame-dup", no_argument, NULL, 0 },
     { "dup-threshold", required_argument, NULL, 0 },
+    { "mctf",                 no_argument, NULL, 0 },
+    { "no-mctf",              no_argument, NULL, 0 },
 #ifdef SVT_HEVC
     { "svt",     no_argument, NULL, 0 },
     { "no-svt",  no_argument, NULL, 0 },
-- 
2.34.1.windows.1

*Thanks and Regards,*





*Snehaa.GVideo Codec Engineer,Media & AI analytics
<https://multicorewareinc.com/>*
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