[FFmpeg-cvslog] avcodec/imgconvert: Support non-planar colorspaces while padding

Przemysław Sobala git at videolan.org
Wed Apr 27 05:42:56 CEST 2016


ffmpeg | branch: release/2.8 | Przemysław Sobala <przemyslaw.sobala at grupawp.pl> | Fri Sep 18 15:40:58 2015 +0200| [4818e074a0310d2f4f563a6da06f2efff3aaa4cc] | committer: Michael Niedermayer

avcodec/imgconvert: Support non-planar colorspaces while padding

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 0d097a869c38850c9ac09bccef60a229470f489b)

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4818e074a0310d2f4f563a6da06f2efff3aaa4cc
---

 libavcodec/imgconvert.c |   37 +++++++++++++++++++++++++++++++++++--
 1 file changed, 35 insertions(+), 2 deletions(-)

diff --git a/libavcodec/imgconvert.c b/libavcodec/imgconvert.c
index dc67560..39cf58a 100644
--- a/libavcodec/imgconvert.c
+++ b/libavcodec/imgconvert.c
@@ -236,9 +236,41 @@ int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
     int x_shift;
     int yheight;
     int i, y;
+    int max_step[4];
+
+    if (pix_fmt < 0 || pix_fmt >= AV_PIX_FMT_NB)
+        return -1;
+
+    if (!is_yuv_planar(desc)) {
+        if (src)
+            return -1; //TODO: Not yet implemented
+
+        av_image_fill_max_pixsteps(max_step, NULL, desc);
+
+        if (padtop || padleft) {
+            memset(dst->data[0], color[0],
+                    dst->linesize[0] * padtop + (padleft * max_step[0]));
+        }
+
+        if (padleft || padright) {
+            optr = dst->data[0] + dst->linesize[0] * padtop +
+                    (dst->linesize[0] - (padright * max_step[0]));
+            yheight = height - 1 - (padtop + padbottom);
+            for (y = 0; y < yheight; y++) {
+                memset(optr, color[0], (padleft + padright) * max_step[0]);
+                optr += dst->linesize[0];
+            }
+        }
+
+        if (padbottom || padright) {
+            optr = dst->data[0] + dst->linesize[0] * (height - padbottom) -
+                    (padright * max_step[0]);
+            memset(optr, color[0], dst->linesize[0] * padbottom +
+                    (padright * max_step[0]));
+        }
 
-    if (pix_fmt < 0 || pix_fmt >= AV_PIX_FMT_NB ||
-        !is_yuv_planar(desc)) return -1;
+        return 0;
+    }
 
     for (i = 0; i < 3; i++) {
         x_shift = i ? desc->log2_chroma_w : 0;
@@ -284,6 +316,7 @@ int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
                 (padbottom >> y_shift) + (padright >> x_shift));
         }
     }
+
     return 0;
 }
 



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