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libavcodec/qsvenc: Add b_strategy option to hevc_qsv 

Add b_strategy option to hevc_qsv. By enabling this option, encoder can
use b frames as reference.

Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>
Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
This commit is contained in:
Wenbin Chen 2022-01-25 15:12:36 +08:00 committed by Haihao Xiang
parent 168c6e23a5
commit 2ecc4fde5f
2 changed files with 7 additions and 2 deletions
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3
doc/encoders.texi
View File

@ -3403,6 +3403,9 @@ Maximum encoded slice size in bytes.
@item @var{p_strategy}
Enable P-pyramid: 0-default 1-simple 2-pyramid(bf need to be set to 0).
@item @var{b_strategy}
This option controls usage of B frames as reference.
@item @var{dblk_idc}
This option disable deblocking. It has value in range 0~2.

6
libavcodec/qsvenc.c
View File

@ -888,8 +888,6 @@ static int init_video_param(AVCodecContext *avctx, QSVEncContext *q)
q->extco2.LookAheadDS = q->look_ahead_downsampling;
q->extco2.RepeatPPS = q->repeat_pps ? MFX_CODINGOPTION_ON : MFX_CODINGOPTION_OFF;
if (q->b_strategy >= 0)
q->extco2.BRefType = q->b_strategy ? MFX_B_REF_PYRAMID : MFX_B_REF_OFF;
if (q->adaptive_i >= 0)
q->extco2.AdaptiveI = q->adaptive_i ? MFX_CODINGOPTION_ON : MFX_CODINGOPTION_OFF;
if (q->adaptive_b >= 0)
@ -910,6 +908,10 @@ static int init_video_param(AVCodecContext *avctx, QSVEncContext *q)
q->extco2.DisableDeblockingIdc = q->dblk_idc;
#endif
#if QSV_VERSION_ATLEAST(1, 8)
if (q->b_strategy >= 0)
q->extco2.BRefType = q->b_strategy ? MFX_B_REF_PYRAMID : MFX_B_REF_OFF;
#endif
#if QSV_VERSION_ATLEAST(1, 9)
if (avctx->qmin >= 0 && avctx->qmax >= 0 && avctx->qmin > avctx->qmax) {
av_log(avctx, AV_LOG_ERROR, "qmin and or qmax are set but invalid, please make sure min <= max\n");