ffmpeg | branch: master | Zhong Li <zhong...@intel.com> | Wed Jan 23 19:16:17 2019 +0800| [74cf2dc3ac405c5e55b7ecd4d17b40e26d59eb84] | committer: Zhong Li
lavc/qsvenc: enable QVBR mode QVBR mode is to use the variable bitrate control algorithm with constant quality. mfxExtCodingOption3 should be supported to enable QVBR mode. It is neccesary to specify a max_rate for QVBR, else it may be ICQ mode. Example usage: ffmpeg -hwaccel qsv -c:v h264_qsv -i input.mp4 -c:v h264_qsv -global_quality 25 -maxrate 2M test_qvbr.mp4 -v verbose Clip QVBR quality range to be [0, 51] as Mark's commments. It is similar to qp range of CQP but possibly should be updated when VP8/VP9 encoding can be supported. Reviewed-by: Mark Thompson <s...@jkqxz.net> Signed-off-by: Zhong Li <zhong...@intel.com> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=74cf2dc3ac405c5e55b7ecd4d17b40e26d59eb84 --- libavcodec/qsvenc.c | 39 +++++++++++++++++++++++++++++++++++++-- libavcodec/qsvenc.h | 7 +++++-- 2 files changed, 42 insertions(+), 4 deletions(-) diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c index ba9bcf16d7..5aa020d47b 100644 --- a/libavcodec/qsvenc.c +++ b/libavcodec/qsvenc.c @@ -136,6 +136,9 @@ static void dump_video_param(AVCodecContext *avctx, QSVEncContext *q, #if QSV_HAVE_CO2 mfxExtCodingOption2 *co2 = (mfxExtCodingOption2*)coding_opts[1]; #endif +#if QSV_HAVE_CO3 + mfxExtCodingOption3 *co3 = (mfxExtCodingOption3*)coding_opts[2]; +#endif av_log(avctx, AV_LOG_VERBOSE, "profile: %s; level: %"PRIu16"\n", print_profile(info->CodecProfile), info->CodecLevel); @@ -190,7 +193,12 @@ static void dump_video_param(AVCodecContext *avctx, QSVEncContext *q, info->ICQQuality, co2->LookAheadDepth); } #endif - +#if QSV_HAVE_QVBR + else if (info->RateControlMethod == MFX_RATECONTROL_QVBR) { + av_log(avctx, AV_LOG_VERBOSE, "QVBRQuality: %"PRIu16"\n", + co3->QVBRQuality); + } +#endif av_log(avctx, AV_LOG_VERBOSE, "NumSlice: %"PRIu16"; NumRefFrame: %"PRIu16"\n", info->NumSlice, info->NumRefFrame); av_log(avctx, AV_LOG_VERBOSE, "RateDistortionOpt: %s\n", @@ -330,7 +338,7 @@ static int select_rc_mode(AVCodecContext *avctx, QSVEncContext *q) } #endif #if QSV_HAVE_ICQ - else if (avctx->global_quality > 0) { + else if (avctx->global_quality > 0 && !avctx->rc_max_rate) { rc_mode = MFX_RATECONTROL_ICQ; rc_desc = "intelligent constant quality (ICQ)"; } @@ -345,6 +353,12 @@ static int select_rc_mode(AVCodecContext *avctx, QSVEncContext *q) rc_desc = "average variable bitrate (AVBR)"; } #endif +#if QSV_HAVE_QVBR + else if (avctx->global_quality > 0) { + rc_mode = MFX_RATECONTROL_QVBR; + rc_desc = "constant quality with VBR algorithm (QVBR)"; + } +#endif else { rc_mode = MFX_RATECONTROL_VBR; rc_desc = "variable bitrate (VBR)"; @@ -568,11 +582,18 @@ static int init_video_param(AVCodecContext *avctx, QSVEncContext *q) #if QSV_HAVE_VCM case MFX_RATECONTROL_VCM: #endif +#if QSV_HAVE_QVBR + case MFX_RATECONTROL_QVBR: +#endif q->param.mfx.BufferSizeInKB = buffer_size_in_kilobytes / brc_param_multiplier; q->param.mfx.InitialDelayInKB = initial_delay_in_kilobytes / brc_param_multiplier; q->param.mfx.TargetKbps = target_bitrate_kbps / brc_param_multiplier; q->param.mfx.MaxKbps = max_bitrate_kbps / brc_param_multiplier; q->param.mfx.BRCParamMultiplier = brc_param_multiplier; +#if QSV_HAVE_QVBR + if (q->param.mfx.RateControlMethod == MFX_RATECONTROL_QVBR) + q->extco3.QVBRQuality = av_clip(avctx->global_quality, 0, 51); +#endif break; case MFX_RATECONTROL_CQP: quant = avctx->global_quality / FF_QP2LAMBDA; @@ -718,6 +739,11 @@ FF_ENABLE_DEPRECATION_WARNINGS } #endif } +#if QSV_HAVE_CO3 + q->extco3.Header.BufferId = MFX_EXTBUFF_CODING_OPTION3; + q->extco3.Header.BufferSz = sizeof(q->extco3); + q->extparam_internal[q->nb_extparam_internal++] = (mfxExtBuffer *)&q->extco3; +#endif } if (!check_enc_param(avctx,q)) { @@ -772,6 +798,12 @@ static int qsv_retrieve_enc_params(AVCodecContext *avctx, QSVEncContext *q) .Header.BufferSz = sizeof(co2), }; #endif +#if QSV_HAVE_CO3 + mfxExtCodingOption3 co3 = { + .Header.BufferId = MFX_EXTBUFF_CODING_OPTION3, + .Header.BufferSz = sizeof(co3), + }; +#endif mfxExtBuffer *ext_buffers[] = { (mfxExtBuffer*)&extradata, @@ -779,6 +811,9 @@ static int qsv_retrieve_enc_params(AVCodecContext *avctx, QSVEncContext *q) #if QSV_HAVE_CO2 (mfxExtBuffer*)&co2, #endif +#if QSV_HAVE_CO3 + (mfxExtBuffer*)&co3, +#endif }; int need_pps = avctx->codec_id != AV_CODEC_ID_MPEG2VIDEO; diff --git a/libavcodec/qsvenc.h b/libavcodec/qsvenc.h index 47a70a4898..00afbd80aa 100644 --- a/libavcodec/qsvenc.h +++ b/libavcodec/qsvenc.h @@ -56,7 +56,7 @@ #define QSV_HAVE_AVBR 0 #define QSV_HAVE_ICQ QSV_VERSION_ATLEAST(1, 28) #define QSV_HAVE_VCM 0 -#define QSV_HAVE_QVBR 0 +#define QSV_HAVE_QVBR QSV_VERSION_ATLEAST(1, 28) #define QSV_HAVE_MF QSV_VERSION_ATLEAST(1, 25) #endif @@ -111,6 +111,9 @@ typedef struct QSVEncContext { #if QSV_HAVE_CO2 mfxExtCodingOption2 extco2; #endif +#if QSV_HAVE_CO3 + mfxExtCodingOption3 extco3; +#endif #if QSV_HAVE_MF mfxExtMultiFrameParam extmfp; mfxExtMultiFrameControl extmfc; @@ -119,7 +122,7 @@ typedef struct QSVEncContext { mfxFrameSurface1 **opaque_surfaces; AVBufferRef *opaque_alloc_buf; - mfxExtBuffer *extparam_internal[2 + QSV_HAVE_CO2 + (QSV_HAVE_MF * 2)]; + mfxExtBuffer *extparam_internal[2 + QSV_HAVE_CO2 + QSV_HAVE_CO3 + (QSV_HAVE_MF * 2)]; int nb_extparam_internal; mfxExtBuffer **extparam; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
