[FFmpeg-devel] [PATCH v5] lavc/qsvenc: add BRC sliding window setting
Zhong Li
zhong.li at intel.com
Mon Mar 18 01:13:13 EET 2019
WinBRCMaxAvgKbps is to specify maximum average bitrate over a
sliding window with size of WinBRCSize
WinBRCMaxAvgKbps will be ignored in CBR mode and equal to TargetKbps.
Signed-off-by: Zhong Li <zhong.li at intel.com>
---
libavcodec/qsvenc.c | 12 ++++++++++++
libavcodec/qsvenc.h | 5 +++++
2 files changed, 17 insertions(+)
diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c
index 5aa020d47b..16d2aa887a 100644
--- a/libavcodec/qsvenc.c
+++ b/libavcodec/qsvenc.c
@@ -267,6 +267,11 @@ static void dump_video_param(AVCodecContext *avctx, QSVEncContext *q,
#endif
#endif
+#if QSV_HAVE_CO3
+ av_log(avctx, AV_LOG_VERBOSE,"WinBRCMaxAvgKbps: %"PRIu32"; WinBRCSize: %"PRId32"\n",
+ co3->WinBRCMaxAvgKbps, co3->WinBRCSize);
+#endif
+
if (avctx->codec_id == AV_CODEC_ID_H264) {
av_log(avctx, AV_LOG_VERBOSE, "Entropy coding: %s; MaxDecFrameBuffering: %"PRIu16"\n",
co->CAVLC == MFX_CODINGOPTION_ON ? "CAVLC" : "CABAC", co->MaxDecFrameBuffering);
@@ -742,7 +747,14 @@ FF_ENABLE_DEPRECATION_WARNINGS
#if QSV_HAVE_CO3
q->extco3.Header.BufferId = MFX_EXTBUFF_CODING_OPTION3;
q->extco3.Header.BufferSz = sizeof(q->extco3);
+ q->extco3.WinBRCMaxAvgKbps = q->win_brc_max_avg_kbps;
+ q->extco3.WinBRCSize = q->win_brc_size;
q->extparam_internal[q->nb_extparam_internal++] = (mfxExtBuffer *)&q->extco3;
+#else
+ if (q->win_brc_max_avg_kbps || q->win_brc_size) {
+ av_log(avctx, AV_LOG_ERROR, "BRC sliding window setting is unsupported\n");
+ return AVERROR(ENOSYS);
+ }
#endif
}
diff --git a/libavcodec/qsvenc.h b/libavcodec/qsvenc.h
index 00afbd80aa..2c44cb836c 100644
--- a/libavcodec/qsvenc.h
+++ b/libavcodec/qsvenc.h
@@ -89,6 +89,8 @@
{ "adaptive_b", "Adaptive B-frame placement", OFFSET(qsv.adaptive_b), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE }, \
{ "b_strategy", "Strategy to choose between I/P/B-frames", OFFSET(qsv.b_strategy), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE }, \
{ "forced_idr", "Forcing I frames as IDR frames", OFFSET(qsv.forced_idr), AV_OPT_TYPE_BOOL,{ .i64 = 0 }, 0, 1, VE }, \
+{ "win_max_rate", "maximum average bitrate (in kbps) over a sliding window", OFFSET(qsv.win_brc_max_avg_kbps), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE }, \
+{ "win_brc_size", "sliding window size of win_max_rate", OFFSET(qsv.win_brc_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
typedef int SetEncodeCtrlCB (AVCodecContext *avctx,
const AVFrame *frame, mfxEncodeCtrl* enc_ctrl);
@@ -169,6 +171,9 @@ typedef struct QSVEncContext {
int repeat_pps;
int low_power;
+ int win_brc_max_avg_kbps;
+ int win_brc_size;
+
int a53_cc;
#if QSV_HAVE_MF
--
2.17.1
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