> -----Original Message----- > From: ffmpeg-devel [mailto:ffmpeg-devel-boun...@ffmpeg.org] On Behalf > Of Mark Thompson > Sent: Thursday, February 28, 2019 6:00 AM > To: ffmpeg-devel@ffmpeg.org > Subject: [FFmpeg-devel] [PATCH 3/5] libx265: Update ROI behaviour to > match documentation > > Equivalent to the previous patch for libx264. > --- > libavcodec/libx265.c | 41 ++++++++++++++++++++--------------------- > 1 file changed, 20 insertions(+), 21 deletions(-) > > diff --git a/libavcodec/libx265.c b/libavcodec/libx265.c > index 98415366da..af1a2b2287 100644 > --- a/libavcodec/libx265.c > +++ b/libavcodec/libx265.c > @@ -296,27 +296,33 @@ static av_cold int > libx265_encode_set_roi(libx265Context *ctx, const AVFrame *fr > int mb_size = (ctx->params->rc.qgSize == 8) ? 8 : 16; > int mbx = (frame->width + mb_size - 1) / mb_size; > int mby = (frame->height + mb_size - 1) / mb_size; > + int qp_range = 51 + 6 * (pic->bitDepth - 8);
just found following from "$ ./x265 --fullhelp", not sure what 69 means here. Shall we change our qoffset formula accordingly? --qpmin <integer> sets a hard lower limit on QP allowed to ratecontrol. Default 0 --qpmax <integer> sets a hard upper limit on QP allowed to ratecontrol. Default 69 > int nb_rois; > - AVRegionOfInterest *roi; > + const AVRegionOfInterest *roi; > float *qoffsets; /* will be freed after encode is > called. */ > qoffsets = av_mallocz_array(mbx * mby, sizeof(*qoffsets)); > if (!qoffsets) > return AVERROR(ENOMEM); > > - nb_rois = sd->size / sizeof(AVRegionOfInterest); > - roi = (AVRegionOfInterest*)sd->data; > - for (int count = 0; count < nb_rois; count++) { > - int starty = FFMIN(mby, roi->top / mb_size); > - int endy = FFMIN(mby, (roi->bottom + mb_size - 1)/ > mb_size); > - int startx = FFMIN(mbx, roi->left / mb_size); > - int endx = FFMIN(mbx, (roi->right + mb_size - 1)/ mb_size); > + roi = (const AVRegionOfInterest*)sd->data; > + if (!roi->self_size || sd->size % roi->self_size != 0) { > + av_log(ctx, AV_LOG_ERROR, "Invalid > AVRegionOfInterest.self_size.\n"); > + return AVERROR(EINVAL); > + } > + nb_rois = sd->size / roi->self_size; > + > + // This list must be iterated in reverse because regions are > + // defined in order of decreasing importance. same comments as libx264 > + for (int i = nb_rois - 1; i >= 0; i--) { > + int startx, endx, starty, endy; > float qoffset; > > - if (roi->self_size == 0) { > - av_free(qoffsets); > - av_log(ctx, AV_LOG_ERROR, "AVRegionOfInterest.self_size > must > be set to sizeof(AVRegionOfInterest).\n"); > - return AVERROR(EINVAL); > - } > + roi = (const AVRegionOfInterest*)(sd->data + roi->self_size > * i); > + > + starty = av_clip(roi->top / mb_size, 0, mby); > + endy = av_clip((frame->height - roi->bottom + mb_size - 1) > / > mb_size, 0, mby); > + startx = av_clip(roi->left / mb_size, 0, mbx); > + endx = av_clip((frame->width - roi->right + mb_size - 1) / > mb_size, > 0, mbx); same comments as libx264 > > if (roi->qoffset.den == 0) { > av_free(qoffsets); > @@ -324,18 +330,11 @@ static av_cold int > libx265_encode_set_roi(libx265Context *ctx, const AVFrame *fr > return AVERROR(EINVAL); > } > qoffset = roi->qoffset.num * 1.0f / roi->qoffset.den; > - qoffset = av_clipf(qoffset, -1.0f, 1.0f); > - > - /* qp range of x265 is from 0 to 51, just choose 25 as the > scale value, > - * so the range of final qoffset is [-25.0, 25.0]. > - */ > - qoffset = qoffset * 25; > + qoffset = av_clipf(qoffset * qp_range, -qp_range, +qp_range); > > for (int y = starty; y < endy; y++) > for (int x = startx; x < endx; x++) > qoffsets[x + y*mbx] = qoffset; > - > - roi = (AVRegionOfInterest*)((char*)roi + roi->self_size); > } > > pic->quantOffsets = qoffsets; > -- > 2.19.2 > > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel