[FFmpeg-cvslog] lavfi/alphaextract: access outlink properties rather than out_buf->video

[Stefano Sabatini]

ffmpeg | branch: master | Stefano Sabatini <stefasab at gmail.com> | Fri Dec  7 19:40:21 2012 +0100| [0bc0d31b7b5c52b0f4d9030dd8770b7881551fa7] | committer: Stefano Sabatini

lavfi/alphaextract: access outlink properties rather than out_buf->video

Avoid one dereference, simplify.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0bc0d31b7b5c52b0f4d9030dd8770b7881551fa7
---

 libavfilter/vf_alphaextract.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libavfilter/vf_alphaextract.c b/libavfilter/vf_alphaextract.c
index f930c51..8c1ce1c 100644
--- a/libavfilter/vf_alphaextract.c
+++ b/libavfilter/vf_alphaextract.c
@@ -77,10 +77,10 @@ static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *cur_buf)
     if (extract->is_packed_rgb) {
         int x, y;
         uint8_t *pin, *pout;
-        for (y = 0; y < out_buf->video->h; y++) {
+        for (y = 0; y < outlink->h; y++) {
             pin = cur_buf->data[0] + y * cur_buf->linesize[0] + extract->rgba_map[A];
             pout = out_buf->data[0] + y * out_buf->linesize[0];
-            for (x = 0; x < out_buf->video->w; x++) {
+            for (x = 0; x < outlink->w; x++) {
                 *pout = *pin;
                 pout += 1;
                 pin += 4;
@@ -89,7 +89,7 @@ static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *cur_buf)
     } else {
         const int linesize = abs(FFMIN(out_buf->linesize[Y], cur_buf->linesize[A]));
         int y;
-        for (y = 0; y < out_buf->video->h; y++) {
+        for (y = 0; y < outlink->h; y++) {
             memcpy(out_buf->data[Y] + y * out_buf->linesize[Y],
                    cur_buf->data[A] + y * cur_buf->linesize[A],
                    linesize);