From: Fei Wang <fei.w.w...@intel.com>
Sliding window bitrate control will provide a more stable bitrate when
use CBR bitrate control mode.
Signed-off-by: Fei Wang <fei.w.w...@intel.com>
---
doc/encoders.texi | 9 +++++++++
libavcodec/qsvenc.c | 25 +++++++++++++++++++++++++
libavcodec/qsvenc.h | 11 +++++++++++
libavcodec/qsvenc_av1.c | 3 +++
libavcodec/qsvenc_h264.c | 3 +++
libavcodec/qsvenc_hevc.c | 3 +++
6 files changed, 54 insertions(+)
diff --git a/doc/encoders.texi b/doc/encoders.texi
index 7d1373e0e0..b9f7f80e74 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -3628,6 +3628,15 @@ This option allows fine-grained control over various
encoder-specific settings p
@item @var{mse}
Supported in h264_qsv, hevc_qsv, and av1_qsv on Windows. Output encoded
frame's quality(MSE/PSNR) information in VERBOSE log.
+
+@item @var{sw_size}
+Number of frames used for sliding window(Only available for CBR bitrate
+control mode on Windows). Range from 30 to 60 for AVC and HEVC. 30 to 120 for
AV1.
+
+@item @var{sw_max_bitrate_factor}
+Factor between bitrate and max bitrate for frames in sliding window.
+Range from 1.1 to 2.0.
+
@end table
@subsection H264 options
diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c
index cd89656f74..872a4d2cdf 100644
--- a/libavcodec/qsvenc.c
+++ b/libavcodec/qsvenc.c
@@ -398,6 +398,11 @@ static void dump_video_param(AVCodecContext *avctx,
QSVEncContext *q,
av_log(avctx, AV_LOG_VERBOSE, "MaxFrameSizeI: %d; ",
co3->MaxFrameSizeI);
av_log(avctx, AV_LOG_VERBOSE, "MaxFrameSizeP: %d\n",
co3->MaxFrameSizeP);
av_log(avctx, AV_LOG_VERBOSE, "ScenarioInfo: %"PRId16"\n",
co3->ScenarioInfo);
+#if QSV_HAVE_SW
+ av_log(avctx, AV_LOG_VERBOSE,
+ "WinBRCSize: %"PRIu16"; WinBRCMaxAvgKbps: %"PRIu16"\n",
+ co3->WinBRCSize, co3->WinBRCMaxAvgKbps);
+#endif
}
if (exthevctiles) {
@@ -647,6 +652,12 @@ static void dump_video_av1_param(AVCodecContext *avctx,
QSVEncContext *q,
av_log(avctx, AV_LOG_VERBOSE, "\n");
}
#endif
+
+#if QSV_HAVE_SW
+ av_log(avctx, AV_LOG_VERBOSE,
+ "WinBRCSize: %"PRIu16"; WinBRCMaxAvgKbps: %"PRIu16"\n",
+ co3->WinBRCSize, co3->WinBRCMaxAvgKbps);
+#endif
}
#endif
@@ -1250,6 +1261,20 @@ static int init_video_param(AVCodecContext *avctx,
QSVEncContext *q)
q->extco3.TransformSkip = MFX_CODINGOPTION_UNKNOWN;
q->extco3.GPB = q->gpb ? MFX_CODINGOPTION_ON :
MFX_CODINGOPTION_OFF;
}
+
+#if QSV_HAVE_SW
+ if ((avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id ==
AV_CODEC_ID_HEVC ||
+ avctx->codec_id == AV_CODEC_ID_AV1) && q->sw_size) {
+ if (QSV_RUNTIME_VERSION_ATLEAST(q->ver, 2, 13)) {
+ q->extco3.WinBRCSize = q->sw_size;
+ q->extco3.WinBRCMaxAvgKbps = (int)(q->sw_max_bitrate_factor *
q->param.mfx.TargetKbps);
+ } else {
+ av_log(avctx, AV_LOG_ERROR,
+ "This version of runtime doesn't support sliding
windows bitrate control\n");
+ return AVERROR_UNKNOWN;
+ }
+ }
+#endif
q->extparam_internal[q->nb_extparam_internal++] = (mfxExtBuffer
*)&q->extco3;
}
diff --git a/libavcodec/qsvenc.h b/libavcodec/qsvenc.h
index 5aa0aae790..64c8cabbc7 100644
--- a/libavcodec/qsvenc.h
+++ b/libavcodec/qsvenc.h
@@ -24,6 +24,7 @@
#define AVCODEC_QSVENC_H
#include <stdint.h>
+#include <float.h>
#include <sys/types.h>
#include "libavutil/common.h"
@@ -47,6 +48,7 @@
#define QSV_HAVE_HE QSV_VERSION_ATLEAST(2, 4)
#define QSV_HAVE_AC QSV_VERSION_ATLEAST(2, 13)
#define QSV_HAVE_MSE QSV_VERSION_ATLEAST(2, 13)
+#define QSV_HAVE_SW QSV_VERSION_ATLEAST(2, 13)
#else
#define QSV_HAVE_AVBR 0
#define QSV_HAVE_VCM 0
@@ -54,6 +56,7 @@
#define QSV_HAVE_HE 0
#define QSV_HAVE_AC 0
#define QSV_HAVE_MSE 0
+#define QSV_HAVE_SW 0
#endif
#define QSV_COMMON_OPTS \
@@ -158,6 +161,12 @@
{ "mse", "Enable output MSE(Mean Squared Error) of each frame",
OFFSET(qsv.mse), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
#endif
+#if QSV_HAVE_SW
+#define QSV_SW_OPTIONS \
+{ "sw_size", "Number of frames used for sliding window(Only available for CBR
bitrate control mode)", OFFSET(qsv.sw_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0,
INT_MAX, VE }, \
+{ "sw_max_bitrate_factor", "Factor between bitrate and max bitrate for frames
in sliding window(Only available when sw_size is set)",
OFFSET(qsv.sw_max_bitrate_factor), AV_OPT_TYPE_FLOAT, { .i64 = 0 }, 0, FLT_MAX,
VE },
+#endif
+
extern const AVCodecHWConfigInternal *const ff_qsv_enc_hw_configs[];
typedef int SetEncodeCtrlCB (AVCodecContext *avctx,
@@ -345,6 +354,8 @@ typedef struct QSVEncContext {
int palette_mode;
int intrabc;
int mse;
+ int sw_size;
+ float sw_max_bitrate_factor;
} QSVEncContext;
int ff_qsv_enc_init(AVCodecContext *avctx, QSVEncContext *q);
diff --git a/libavcodec/qsvenc_av1.c b/libavcodec/qsvenc_av1.c
index ee0617714a..f685214daa 100644
--- a/libavcodec/qsvenc_av1.c
+++ b/libavcodec/qsvenc_av1.c
@@ -185,6 +185,9 @@ static const AVOption options[] = {
QSV_OPTION_MAX_FRAME_SIZE
#if QSV_HAVE_MSE
QSV_MSE_OPTIONS
+#endif
+#if QSV_HAVE_SW
+ QSV_SW_OPTIONS
#endif
{ "profile", NULL, OFFSET(qsv.profile), AV_OPT_TYPE_INT, { .i64 =
MFX_PROFILE_UNKNOWN }, 0, INT_MAX, VE, .unit = "profile" },
{ "unknown" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_UNKNOWN
}, INT_MIN, INT_MAX, VE, .unit = "profile" },
diff --git a/libavcodec/qsvenc_h264.c b/libavcodec/qsvenc_h264.c
index 0fc0c852ac..d05371350f 100644
--- a/libavcodec/qsvenc_h264.c
+++ b/libavcodec/qsvenc_h264.c
@@ -123,6 +123,9 @@ static const AVOption options[] = {
#if QSV_HAVE_MSE
QSV_MSE_OPTIONS
#endif
+#if QSV_HAVE_SW
+ QSV_SW_OPTIONS
+#endif
{ "cavlc", "Enable CAVLC",
OFFSET(qsv.cavlc), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE
},
#if QSV_HAVE_VCM
diff --git a/libavcodec/qsvenc_hevc.c b/libavcodec/qsvenc_hevc.c
index 8197e0958e..8d08991979 100644
--- a/libavcodec/qsvenc_hevc.c
+++ b/libavcodec/qsvenc_hevc.c
@@ -326,6 +326,9 @@ static const AVOption options[] = {
#if QSV_HAVE_MSE
QSV_MSE_OPTIONS
#endif
+#if QSV_HAVE_SW
+ QSV_SW_OPTIONS
+#endif
{ "idr_interval", "Distance (in I-frames) between IDR frames",
OFFSET(qsv.idr_interval), AV_OPT_TYPE_INT, { .i64 = 0 }, -1, INT_MAX, VE, .unit
= "idr_interval" },
{ "begin_only", "Output an IDR-frame only at the beginning of the stream",
0, AV_OPT_TYPE_CONST, { .i64 = -1 }, 0, 0, VE, .unit = "idr_interval" },
--
2.34.1
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