[FFmpeg-cvslog] matroskadec: fix display_width/height = 0 handling

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Wed Apr  3 23:40:13 2013 +0200| [f51ce34e5e89bd8cb1eaa4433862f489b0dabc77] | committer: Michael Niedermayer

matroskadec: fix display_width/height = 0 handling

Fixes Ticket2424

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f51ce34e5e89bd8cb1eaa4433862f489b0dabc77
---

 libavformat/matroskadec.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index b8b6e98..9d9fa6d 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -321,8 +321,8 @@ static EbmlSyntax matroska_info[] = {
 
 static EbmlSyntax matroska_track_video[] = {
     { MATROSKA_ID_VIDEOFRAMERATE,     EBML_FLOAT,0, offsetof(MatroskaTrackVideo,frame_rate) },
-    { MATROSKA_ID_VIDEODISPLAYWIDTH,  EBML_UINT, 0, offsetof(MatroskaTrackVideo,display_width) },
-    { MATROSKA_ID_VIDEODISPLAYHEIGHT, EBML_UINT, 0, offsetof(MatroskaTrackVideo,display_height) },
+    { MATROSKA_ID_VIDEODISPLAYWIDTH,  EBML_UINT, 0, offsetof(MatroskaTrackVideo,display_width), {.u=-1} },
+    { MATROSKA_ID_VIDEODISPLAYHEIGHT, EBML_UINT, 0, offsetof(MatroskaTrackVideo,display_height), {.u=-1} },
     { MATROSKA_ID_VIDEOPIXELWIDTH,    EBML_UINT, 0, offsetof(MatroskaTrackVideo,pixel_width) },
     { MATROSKA_ID_VIDEOPIXELHEIGHT,   EBML_UINT, 0, offsetof(MatroskaTrackVideo,pixel_height) },
     { MATROSKA_ID_VIDEOCOLORSPACE,    EBML_BIN,  0, offsetof(MatroskaTrackVideo,color_space) },
@@ -1576,9 +1576,9 @@ static int matroska_read_header(AVFormatContext *s)
         if (track->type == MATROSKA_TRACK_TYPE_VIDEO) {
             if (!track->default_duration && track->video.frame_rate > 0)
                 track->default_duration = 1000000000/track->video.frame_rate;
-            if (!track->video.display_width)
+            if (track->video.display_width == -1)
                 track->video.display_width = track->video.pixel_width;
-            if (!track->video.display_height)
+            if (track->video.display_height == -1)
                 track->video.display_height = track->video.pixel_height;
             if (track->video.color_space.size == 4)
                 fourcc = AV_RL32(track->video.color_space.data);