> -----Original Message----- > From: ffmpeg-devel [mailto:ffmpeg-devel-boun...@ffmpeg.org] On Behalf > Of Fu, Linjie > Sent: Tuesday, June 4, 2019 17:11 > To: ffmpeg-devel@ffmpeg.org > Cc: Mark Thompson <s...@jkqxz.net> > Subject: Re: [FFmpeg-devel] [PATCH, v2] lavc/vaapi_encode: grow packet if > vaMapBuffer returns multiple buffers > > > -----Original Message----- > > From: Fu, Linjie > > Sent: Friday, May 31, 2019 08:35 > > To: ffmpeg-devel@ffmpeg.org > > Cc: Fu, Linjie <linjie...@intel.com> > > Subject: [PATCH,v2] lavc/vaapi_encode: grow packet if vaMapBuffer > returns > > multiple buffers > > > > It seems that VA_CODED_BUF_STATUS_SINGLE_NALU allows driver to > map > > buffer for each slice. > > > > Currently, assigning new buffer for pkt when multiple buffer returns > > from vaMapBuffer will cover the previous encoded pkt data and lead > > to encode issues. > > > > Iterate through the buf_list first to find out the total buffer size > > needed for the pkt, allocate the whole pkt to avoid repeated reallocation > > and memcpy, then copy data from each buf to pkt. > > > > Signed-off-by: Linjie Fu <linjie...@intel.com> > > --- > > [v2]: allocate the whole pkt to avoid repeated reallocation > > and memcpy > > > > libavcodec/vaapi_encode.c | 18 +++++++++++++----- > > 1 file changed, 13 insertions(+), 5 deletions(-) > > > > diff --git a/libavcodec/vaapi_encode.c b/libavcodec/vaapi_encode.c > > index 2dda451..9c9e5dd 100644 > > --- a/libavcodec/vaapi_encode.c > > +++ b/libavcodec/vaapi_encode.c > > @@ -489,6 +489,8 @@ static int vaapi_encode_output(AVCodecContext > > *avctx, > > VAAPIEncodeContext *ctx = avctx->priv_data; > > VACodedBufferSegment *buf_list, *buf; > > VAStatus vas; > > + int total_size = 0; > > + uint8_t *ptr; > > int err; > > > > err = vaapi_encode_wait(avctx, pic); > > @@ -505,15 +507,21 @@ static int vaapi_encode_output(AVCodecContext > > *avctx, > > goto fail; > > } > > > > + for (buf = buf_list; buf; buf = buf->next) > > + total_size += buf->size; > > + > > + err = av_new_packet(pkt, total_size); > > + ptr = pkt->data; > > + > > + if (err < 0) > > + goto fail_mapped; > > + > > for (buf = buf_list; buf; buf = buf->next) { > > av_log(avctx, AV_LOG_DEBUG, "Output buffer: %u bytes " > > "(status %08x).\n", buf->size, buf->status); > > > > - err = av_new_packet(pkt, buf->size); > > - if (err < 0) > > - goto fail_mapped; > > - > > - memcpy(pkt->data, buf->buf, buf->size); > > + memcpy(ptr, buf->buf, buf->size); > > + ptr += buf->size; > > } > > > > if (pic->type == PICTURE_TYPE_IDR) > > -- > > 2.7.4 > > Ping? > This can fix the encoding issue for vaapi_vp8: > ffmpeg -hwaccel vaapi -vaapi_device /dev/dri/renderD128 -v verbose -f > rawvideo -pix_fmt yuv420p -s:v 1280x720 -i ./input_I420.yuv -vf > 'format=nv12,hwupload' -c:v vp8_vaapi -rc_mode CQP -g 1 -global_quality 14 > -loop_filter_sharpness 0 -loop_filter_level 0 -vframes 10 -y out.ivf
Media driver will return 2 buffers in fact. The first buffer is VACodedBufferSegment buffer which includes encoded output. And the second buffer is extra VACodedBufferVP9Status. https://github.com/intel/media-driver/issues/624 Fixes vp8 encoding issues for core platforms(Kaby Lake) and could be verified. Ping? - linjie _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".