libavcodec/qsvenc: Add intra refresh to hevc_qsv and add new intra refresh parameter

Add intra refresh support to hevc_qsv as well.
Add an new intra refresh type: "horizontal", and an new param
ref_cycle_dist. This param specify the distance between the
beginnings of the intra-refresh cycles in frames.

Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>
Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>

5 files changed, 54 insertions, 10 deletions

diff --git a/doc/encoders.texi b/doc/encoders.texi
index 6c1c4df57a..4e35e50e4d 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -3344,7 +3344,8 @@ Specifies intra refresh type. The major goal of intra refresh is improvement of
 error resilience without significant impact on encoded bitstream size caused by
 I frames. The SDK encoder achieves this by encoding part of each frame in
 refresh cycle using intra MBs. @var{none} means no refresh. @var{vertical} means
-vertical refresh, by column of MBs.
+vertical refresh, by column of MBs. To enable intra refresh, B frame should be
+set to 0.
 
 @item @var{int_ref_cycle_size}
 Specifies number of pictures within refresh cycle starting from 2. 0 and 1 are
@@ -3355,6 +3356,9 @@ Specifies QP difference for inserted intra MBs. This is signed value in
 [-51, 51] range if target encoding bit-depth for luma samples is 8 and this
 range is [-63, 63] for 10 bit-depth or [-75, 75] for 12 bit-depth respectively.
 
+@item @var{int_ref_cycle_dist}
+Distance between the beginnings of the intra-refresh cycles in frames.
+
 @item @var{profile}
 @table @samp
 @item unknown
@@ -3463,6 +3467,26 @@ Insert picture timing SEI with pic_struct_syntax element.
 @item @var{transform_skip}
 Turn this option ON to enable transformskip. It is supported on platform equal
 or newer than ICL.
+
+@item @var{int_ref_type}
+Specifies intra refresh type. The major goal of intra refresh is improvement of
+error resilience without significant impact on encoded bitstream size caused by
+I frames. The SDK encoder achieves this by encoding part of each frame in
+refresh cycle using intra MBs. @var{none} means no refresh. @var{vertical} means
+vertical refresh, by column of MBs. To enable intra refresh, B frame should be
+set to 0.
+
+@item @var{int_ref_cycle_size}
+Specifies number of pictures within refresh cycle starting from 2. 0 and 1 are
+invalid values.
+
+@item @var{int_ref_qp_delta}
+Specifies QP difference for inserted intra MBs. This is signed value in
+[-51, 51] range if target encoding bit-depth for luma samples is 8 and this
+range is [-63, 63] for 10 bit-depth or [-75, 75] for 12 bit-depth respectively.
+
+@item @var{int_ref_cycle_dist}
+Distance between the beginnings of the intra-refresh cycles in frames.
 @end table
 
 @subsection MPEG2 Options
diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c
index 686dfe6610..84ad056f32 100644
--- a/libavcodec/qsvenc.c
+++ b/libavcodec/qsvenc.c
@@ -364,6 +364,10 @@ static void dump_video_param(AVCodecContext *avctx, QSVEncContext *q,
 #if QSV_VERSION_ATLEAST(1, 26)
     av_log(avctx, AV_LOG_VERBOSE, "TransformSkip: %s \n", print_threestate(co3->TransformSkip));
 #endif
+
+#if QSV_VERSION_ATLEAST(1, 16)
+    av_log(avctx, AV_LOG_VERBOSE, "IntRefCycleDist: %"PRId16"\n", co3->IntRefCycleDist);
+#endif
 }
 
 static void dump_video_vp9_param(AVCodecContext *avctx, QSVEncContext *q,
@@ -865,13 +869,6 @@ static int init_video_param(AVCodecContext *avctx, QSVEncContext *q)
 
 #if QSV_HAVE_CO2
         if (avctx->codec_id == AV_CODEC_ID_H264) {
-            if (q->int_ref_type >= 0)
-                q->extco2.IntRefType = q->int_ref_type;
-            if (q->int_ref_cycle_size >= 0)
-                q->extco2.IntRefCycleSize = q->int_ref_cycle_size;
-            if (q->int_ref_qp_delta != INT16_MIN)
-                q->extco2.IntRefQPDelta = q->int_ref_qp_delta;
-
             if (q->bitrate_limit >= 0)
                 q->extco2.BitrateLimit = q->bitrate_limit ? MFX_CODINGOPTION_ON : MFX_CODINGOPTION_OFF;
             if (q->mbbrc >= 0)
@@ -900,6 +897,12 @@ static int init_video_param(AVCodecContext *avctx, QSVEncContext *q)
                 q->extco2.ExtBRC = q->extbrc ? MFX_CODINGOPTION_ON : MFX_CODINGOPTION_OFF;
             if (q->max_frame_size >= 0)
                 q->extco2.MaxFrameSize = q->max_frame_size;
+            if (q->int_ref_type >= 0)
+                q->extco2.IntRefType = q->int_ref_type;
+            if (q->int_ref_cycle_size >= 0)
+                q->extco2.IntRefCycleSize = q->int_ref_cycle_size;
+            if (q->int_ref_qp_delta != INT16_MIN)
+                q->extco2.IntRefQPDelta = q->int_ref_qp_delta;
 #if QSV_HAVE_MAX_SLICE_SIZE
             if (q->max_slice_size >= 0)
                 q->extco2.MaxSliceSize = q->max_slice_size;
@@ -974,6 +977,10 @@ static int init_video_param(AVCodecContext *avctx, QSVEncContext *q)
                        "Please set max_b_frames(-bf) to 0 to enable P-pyramid\n");
             }
 #endif
+#if QSV_VERSION_ATLEAST(1, 16)
+            if (q->int_ref_cycle_dist >= 0)
+                q->extco3.IntRefCycleDist = q->int_ref_cycle_dist;
+#endif
         }
 
         if (avctx->codec_id == AV_CODEC_ID_HEVC) {
diff --git a/libavcodec/qsvenc.h b/libavcodec/qsvenc.h
index 65f035045c..5fa0b6f5ba 100644
--- a/libavcodec/qsvenc.h
+++ b/libavcodec/qsvenc.h
@@ -195,6 +195,7 @@ typedef struct QSVEncContext {
     int int_ref_type;
     int int_ref_cycle_size;
     int int_ref_qp_delta;
+    int int_ref_cycle_dist;
     int recovery_point_sei;
 
     int repeat_pps;
diff --git a/libavcodec/qsvenc_h264.c b/libavcodec/qsvenc_h264.c
index 9f127607b7..bec3633268 100644
--- a/libavcodec/qsvenc_h264.c
+++ b/libavcodec/qsvenc_h264.c
@@ -126,13 +126,16 @@ static const AVOption options[] = {
     { "4x"                     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_LOOKAHEAD_DS_4x      }, INT_MIN, INT_MAX,     VE, "look_ahead_downsampling" },
 #endif
 
-    { "int_ref_type", "Intra refresh type",                                      OFFSET(qsv.int_ref_type),            AV_OPT_TYPE_INT, { .i64 = -1 }, -1, UINT16_MAX, VE, "int_ref_type" },
+    { "int_ref_type", "Intra refresh type. B frames should be set to 0.",        OFFSET(qsv.int_ref_type),            AV_OPT_TYPE_INT, { .i64 = -1 }, -1, UINT16_MAX, VE, "int_ref_type" },
         { "none",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, .flags = VE, "int_ref_type" },
         { "vertical", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, .flags = VE, "int_ref_type" },
+        { "horizontal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, .flags = VE, "int_ref_type" },
     { "int_ref_cycle_size", "Number of frames in the intra refresh cycle",       OFFSET(qsv.int_ref_cycle_size),      AV_OPT_TYPE_INT, { .i64 = -1 },               -1, UINT16_MAX, VE },
     { "int_ref_qp_delta",   "QP difference for the refresh MBs",                 OFFSET(qsv.int_ref_qp_delta),        AV_OPT_TYPE_INT, { .i64 = INT16_MIN }, INT16_MIN,  INT16_MAX, VE },
     { "recovery_point_sei", "Insert recovery point SEI messages",                OFFSET(qsv.recovery_point_sei),      AV_OPT_TYPE_INT, { .i64 = -1 },               -1,          1, VE },
-
+#if QSV_VERSION_ATLEAST(1, 16)
+    { "int_ref_cycle_dist",   "Distance between the beginnings of the intra-refresh cycles in frames",  OFFSET(qsv.int_ref_cycle_dist),      AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT16_MAX, VE },
+#endif
     { "profile", NULL, OFFSET(qsv.profile), AV_OPT_TYPE_INT, { .i64 = MFX_PROFILE_UNKNOWN }, 0, INT_MAX, VE, "profile" },
     { "unknown" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_UNKNOWN      }, INT_MIN, INT_MAX,     VE, "profile" },
     { "baseline", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_AVC_BASELINE }, INT_MIN, INT_MAX,     VE, "profile" },
diff --git a/libavcodec/qsvenc_hevc.c b/libavcodec/qsvenc_hevc.c
index 91a316f9c8..5cac141c4d 100644
--- a/libavcodec/qsvenc_hevc.c
+++ b/libavcodec/qsvenc_hevc.c
@@ -258,6 +258,15 @@ static const AVOption options[] = {
 #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
+    { "int_ref_type", "Intra refresh type. B frames should be set to 0",         OFFSET(qsv.int_ref_type),            AV_OPT_TYPE_INT, { .i64 = -1 }, -1, UINT16_MAX, VE, "int_ref_type" },
+        { "none",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, .flags = VE, "int_ref_type" },
+        { "vertical", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, .flags = VE, "int_ref_type" },
+        { "horizontal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, .flags = VE, "int_ref_type" },
+    { "int_ref_cycle_size", "Number of frames in the intra refresh cycle",       OFFSET(qsv.int_ref_cycle_size),      AV_OPT_TYPE_INT, { .i64 = -1 },               -1, UINT16_MAX, VE },
+    { "int_ref_qp_delta",   "QP difference for the refresh MBs",                 OFFSET(qsv.int_ref_qp_delta),        AV_OPT_TYPE_INT, { .i64 = INT16_MIN }, INT16_MIN,  INT16_MAX, VE },
+#if QSV_VERSION_ATLEAST(1, 16)
+    { "int_ref_cycle_dist",   "Distance between the beginnings of the intra-refresh cycles in frames",  OFFSET(qsv.int_ref_cycle_dist),      AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT16_MAX, VE },
+#endif
 
     { NULL },
 };