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Code Issues Releases Activity

avfilter/vf_sr.c: refine code to use AVPixFmtDescriptor.log2_chroma_h/w

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Signed-off-by: Guo, Yejun <yejun.guo@intel.com>
Reviewed-by: Pedro Arthur <bygrandao@gmail.com>
This commit is contained in:
Guo, Yejun 2020-02-21 19:29:12 +08:00
parent ac73879f1b
commit f9cb7cf424
1 changed files with 5 additions and 33 deletions
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38
libavfilter/vf_sr.c
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@ -176,40 +176,12 @@ static int config_props(AVFilterLink *inlink)
sr_context->sws_slice_h = inlink->h;
} else {
if (inlink->format != AV_PIX_FMT_GRAY8){
sws_src_h = sr_context->input.height;
sws_src_w = sr_context->input.width;
sws_dst_h = sr_context->output.height;
sws_dst_w = sr_context->output.width;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
sws_src_h = AV_CEIL_RSHIFT(sr_context->input.height, desc->log2_chroma_h);
sws_src_w = AV_CEIL_RSHIFT(sr_context->input.width, desc->log2_chroma_w);
sws_dst_h = AV_CEIL_RSHIFT(sr_context->output.height, desc->log2_chroma_h);
sws_dst_w = AV_CEIL_RSHIFT(sr_context->output.width, desc->log2_chroma_w);
switch (inlink->format){
case AV_PIX_FMT_YUV420P:
sws_src_h = AV_CEIL_RSHIFT(sws_src_h, 1);
sws_src_w = AV_CEIL_RSHIFT(sws_src_w, 1);
sws_dst_h = AV_CEIL_RSHIFT(sws_dst_h, 1);
sws_dst_w = AV_CEIL_RSHIFT(sws_dst_w, 1);
break;
case AV_PIX_FMT_YUV422P:
sws_src_w = AV_CEIL_RSHIFT(sws_src_w, 1);
sws_dst_w = AV_CEIL_RSHIFT(sws_dst_w, 1);
break;
case AV_PIX_FMT_YUV444P:
break;
case AV_PIX_FMT_YUV410P:
sws_src_h = AV_CEIL_RSHIFT(sws_src_h, 2);
sws_src_w = AV_CEIL_RSHIFT(sws_src_w, 2);
sws_dst_h = AV_CEIL_RSHIFT(sws_dst_h, 2);
sws_dst_w = AV_CEIL_RSHIFT(sws_dst_w, 2);
break;
case AV_PIX_FMT_YUV411P:
sws_src_w = AV_CEIL_RSHIFT(sws_src_w, 2);
sws_dst_w = AV_CEIL_RSHIFT(sws_dst_w, 2);
break;
default:
av_log(context, AV_LOG_ERROR,
"could not create SwsContext for scaling for given input pixel format: %s\n",
av_get_pix_fmt_name(inlink->format));
return AVERROR(EIO);
}
sr_context->sws_contexts[0] = sws_getContext(sws_src_w, sws_src_h, AV_PIX_FMT_GRAY8,
sws_dst_w, sws_dst_h, AV_PIX_FMT_GRAY8,
SWS_BICUBIC, NULL, NULL, NULL);