[FFmpeg-devel] [PATCH V4 4/4] libavcodec/qsvenc: Add transform skip to hevc_qsv

[Wenbin Chen <wenbin.chen-at-intel.com@ffmpeg.org>]

Add transform_skip option to hevc_qsv. By enabling this option,
the transform_skip_enabled_flag in PPS will be set to 1.
This option is supported on the platform equal or newer than ICL.

Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>
---
 doc/encoders.texi        |  4 ++++
 libavcodec/qsvenc.c      | 10 +++++++++-
 libavcodec/qsvenc.h      |  1 +
 libavcodec/qsvenc_hevc.c |  3 +++
 4 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/doc/encoders.texi b/doc/encoders.texi
index 3d7c944fba..66e4753c2a 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -3447,6 +3447,10 @@ Number of rows for tiled encoding.
 
 @item @var{aud}
 Insert the Access Unit Delimiter NAL.
+
+@item @var{transform_skip}
+Turn this option ON to enable transformskip. It is supported on platform equal
+or newer than ICL.
 @end table
 
 @subsection MPEG2 Options
diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c
index f2ba0241c6..4e5997c9ed 100644
--- a/libavcodec/qsvenc.c
+++ b/libavcodec/qsvenc.c
@@ -358,6 +358,9 @@ static void dump_video_param(AVCodecContext *avctx, QSVEncContext *q,
     av_log(avctx, AV_LOG_VERBOSE, "DisableDeblockingIdc: %"PRIu32" \n", co2->DisableDeblockingIdc);
 #endif
 
+#if QSV_VERSION_ATLEAST(1, 26)
+    av_log(avctx, AV_LOG_VERBOSE, "TransformSkip: %s \n", print_threestate(co3->TransformSkip));
+#endif
 }
 
 static void dump_video_vp9_param(AVCodecContext *avctx, QSVEncContext *q,
@@ -970,10 +973,15 @@ static int init_video_param(AVCodecContext *avctx, QSVEncContext *q)
 #endif
         }
 
+        if (avctx->codec_id == AV_CODEC_ID_HEVC) {
+#if QSV_VERSION_ATLEAST(1, 26)
+            q->extco3.TransformSkip = q->transform_skip ? MFX_CODINGOPTION_ON :
+                                                          MFX_CODINGOPTION_OFF;
+#endif
 #if QSV_HAVE_GPB
-        if (avctx->codec_id == AV_CODEC_ID_HEVC)
             q->extco3.GPB              = q->gpb ? MFX_CODINGOPTION_ON : MFX_CODINGOPTION_OFF;
 #endif
+        }
         q->extparam_internal[q->nb_extparam_internal++] = (mfxExtBuffer *)&q->extco3;
 #endif
     }
diff --git a/libavcodec/qsvenc.h b/libavcodec/qsvenc.h
index 960604cb9a..5a574ada30 100644
--- a/libavcodec/qsvenc.h
+++ b/libavcodec/qsvenc.h
@@ -200,6 +200,7 @@ typedef struct QSVEncContext {
     int repeat_pps;
     int low_power;
     int gpb;
+    int transform_skip;
 
     int a53_cc;
 
diff --git a/libavcodec/qsvenc_hevc.c b/libavcodec/qsvenc_hevc.c
index 08aba3011d..679c09c858 100644
--- a/libavcodec/qsvenc_hevc.c
+++ b/libavcodec/qsvenc_hevc.c
@@ -251,6 +251,9 @@ static const AVOption options[] = {
     { "tile_rows",  "Number of rows for tiled encoding",      OFFSET(qsv.tile_rows),    AV_OPT_TYPE_INT, { .i64 = 0 }, 0, UINT16_MAX, VE },
     { "recovery_point_sei", "Insert recovery point SEI messages",       OFFSET(qsv.recovery_point_sei),      AV_OPT_TYPE_INT, { .i64 = -1 },               -1,          1, VE },
     { "aud", "Insert the Access Unit Delimiter NAL", OFFSET(qsv.aud), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE},
+#if QSV_VERSION_ATLEAST(1, 26)
+    { "transform_skip", "Turn this option ON to enable transformskip",   OFFSET(qsv.transform_skip),          AV_OPT_TYPE_INT,    { .i64 = -1},   -1, 1,  VE},
+#endif
 
     { NULL },
 };
-- 
2.25.1

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