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[FFmpeg-devel,1/3] vcodec/gdv: Optimize unscaled loop

Message ID 20190104192236.25585-1-michael@niedermayer.cc
State Accepted
Commit 2d580d727cf2f6e857a9e46fd2dcdee6473e7c3c
Headers show

Commit Message

Michael Niedermayer Jan. 4, 2019, 7:22 p.m. UTC 
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/gdv.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Comments

Paul B Mahol Jan. 4, 2019, 7:29 p.m. UTC | #1 
On 1/4/19, Michael Niedermayer <michael@niedermayer.cc> wrote:
> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> ---
>  libavcodec/gdv.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)


OK
Michael Niedermayer Jan. 5, 2019, 4:18 p.m. UTC | #2 
On Fri, Jan 04, 2019 at 08:29:05PM +0100, Paul B Mahol wrote:
> On 1/4/19, Michael Niedermayer <michael@niedermayer.cc> wrote:
> > Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> > ---
> >  libavcodec/gdv.c | 6 ++----
> >  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> 
> OK

will apply

thx

[...]
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Patch

diff --git a/libavcodec/gdv.c b/libavcodec/gdv.c
index 538bc38e3e..132ec7288a 100644
--- a/libavcodec/gdv.c
+++ b/libavcodec/gdv.c
@@ -470,12 +470,10 @@  static int gdv_decode_frame(AVCodecContext *avctx, void *data,
 
     if (!gdv->scale_v && !gdv->scale_h) {
         int sidx = PREAMBLE_SIZE, didx = 0;
-        int y, x;
+        int y;
 
         for (y = 0; y < avctx->height; y++) {
-            for (x = 0; x < avctx->width; x++) {
-                dst[x+didx] = gdv->frame[x+sidx];
-            }
+            memcpy(dst + didx, gdv->frame + sidx, avctx->width);
             sidx += avctx->width;
             didx += frame->linesize[0];
         }