From 3da54858d36c0371e713935b69c5df5f050ca1b3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20B=C5=93sch?= <ubitux@gmail.com>
Date: Sat, 9 Mar 2013 05:17:01 +0100
Subject: [PATCH] lavfi/hue: add an optimized direct path.
---
libavfilter/vf_hue.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/libavfilter/vf_hue.c b/libavfilter/vf_hue.c
index 2e3a024cae2..481113d4f1f 100644
--- a/libavfilter/vf_hue.c
+++ b/libavfilter/vf_hue.c
@@ -281,13 +281,19 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
HueContext *hue = inlink->dst->priv;
AVFilterLink *outlink = inlink->dst->outputs[0];
AVFrame *outpic;
+ int direct = 0;
+ if (av_frame_is_writable(inpic)) {
+ direct = 1;
+ outpic = inpic;
+ } else {
outpic = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!outpic) {
av_frame_free(&inpic);
return AVERROR(ENOMEM);
}
av_frame_copy_props(outpic, inpic);
+ }
if (!hue->flat_syntax) {
hue->var_values[VAR_T] = TS2T(inpic->pts, inlink->time_base);
@@ -321,6 +327,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
hue->var_values[VAR_N] += 1;
+ if (!direct)
av_image_copy_plane(outpic->data[0], outpic->linesize[0],
inpic->data[0], inpic->linesize[0],
inlink->w, inlink->h);
@@ -330,6 +337,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
inlink->w >> hue->hsub, inlink->h >> hue->vsub,
hue->hue_cos, hue->hue_sin);
+ if (!direct)
av_frame_free(&inpic);
return ff_filter_frame(outlink, outpic);
}
--
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