diff options
| author | Sven Dueking <sven@nablet.com> | 2015-08-21 09:17:35 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2015-08-30 16:00:05 +0200 |
| commit | 67e87f8050cb8cc61e016cb77be137c18653cbfe (patch) | |
| tree | 4ede49b83737a56f4cdf9755f54a67e47e279016 /libavcodec/qsvenc.c | |
| parent | dead1964ea8c4a87adb098c2c1abb2778b01831f (diff) | |
avcodec/qsv : Added look ahead rate control mode
Reviewed-by: Ivan Uskov <ivan.uskov@nablet.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/qsvenc.c')
| -rw-r--r-- | libavcodec/qsvenc.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c index 1532258d49..1aeab03d04 100644 --- a/libavcodec/qsvenc.c +++ b/libavcodec/qsvenc.c @@ -107,8 +107,16 @@ static int init_video_param(AVCodecContext *avctx, QSVEncContext *q) q->param.mfx.RateControlMethod = MFX_RATECONTROL_CBR; ratecontrol_desc = "constant bitrate (CBR)"; } else if (!avctx->rc_max_rate) { - q->param.mfx.RateControlMethod = MFX_RATECONTROL_AVBR; - ratecontrol_desc = "average variable bitrate (AVBR)"; +#if QSV_VERSION_ATLEAST(1,7) + if (q->look_ahead) { + q->param.mfx.RateControlMethod = MFX_RATECONTROL_LA; + ratecontrol_desc = "lookahead (LA)"; + } else +#endif + { + q->param.mfx.RateControlMethod = MFX_RATECONTROL_AVBR; + ratecontrol_desc = "average variable bitrate (AVBR)"; + } } else { q->param.mfx.RateControlMethod = MFX_RATECONTROL_VBR; ratecontrol_desc = "variable bitrate (VBR)"; @@ -132,6 +140,9 @@ static int init_video_param(AVCodecContext *avctx, QSVEncContext *q) break; case MFX_RATECONTROL_AVBR: +#if QSV_VERSION_ATLEAST(1,7) + case MFX_RATECONTROL_LA: +#endif q->param.mfx.TargetKbps = avctx->bit_rate / 1000; q->param.mfx.Convergence = q->avbr_convergence; q->param.mfx.Accuracy = q->avbr_accuracy; @@ -151,6 +162,22 @@ static int init_video_param(AVCodecContext *avctx, QSVEncContext *q) q->extparam[0] = (mfxExtBuffer *)&q->extco; +#if QSV_VERSION_ATLEAST(1,6) + q->extco2.Header.BufferId = MFX_EXTBUFF_CODING_OPTION2; + q->extco2.Header.BufferSz = sizeof(q->extco2); + +#if QSV_VERSION_ATLEAST(1,7) + // valid value range is from 10 to 100 inclusive + // to instruct the encoder to use the default value this should be set to zero + q->extco2.LookAheadDepth = q->look_ahead_depth != 0 ? FFMAX(10, q->look_ahead_depth) : 0; +#endif +#if QSV_VERSION_ATLEAST(1,8) + q->extco2.LookAheadDS = q->look_ahead_downsampling; +#endif + + q->extparam[1] = (mfxExtBuffer *)&q->extco2; + +#endif q->param.ExtParam = q->extparam; q->param.NumExtParam = FF_ARRAY_ELEMS(q->extparam); } |