[libav-devel] [PATCH 2/2] vf_showinfo: print display orientation values

[Vittorio Giovara]

---
 libavfilter/vf_showinfo.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/libavfilter/vf_showinfo.c b/libavfilter/vf_showinfo.c
index 031d8fe..80bd33d 100644
--- a/libavfilter/vf_showinfo.c
+++ b/libavfilter/vf_showinfo.c
@@ -25,8 +25,10 @@
 #include <inttypes.h>
 
 #include "libavutil/adler32.h"
+#include "libavutil/displayorientation.h"
 #include "libavutil/imgutils.h"
 #include "libavutil/internal.h"
+#include "libavutil/intreadwrite.h"
 #include "libavutil/pixdesc.h"
 #include "libavutil/stereo3d.h"
 
@@ -68,6 +70,21 @@ static void dump_stereo3d(AVFilterContext *ctx, 
AVFrameSideData *sd)
         av_log(ctx, AV_LOG_INFO, " (inverted)");
 }
 
+static void dump_displayorientation(AVFilterContext *ctx, AVFrameSideData *sd)
+{
+    AVDisplayOrientation *display;
+
+    av_log(ctx, AV_LOG_INFO, "display orientation: ");
+    if (sd->size < sizeof(*display)) {
+        av_log(ctx, AV_LOG_INFO, "invalid data");
+        return;
+    }
+
+    display = (AVDisplayOrientation *)sd->data;
+    av_log(ctx, AV_LOG_INFO, "hflip %d vflip %d ", display->hflip, 
display->vflip);
+    av_log(ctx, AV_LOG_INFO, "rotation angle %d degrees", display->rotation);
+}
+
 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
 {
     AVFilterContext *ctx = inlink->dst;
@@ -117,6 +134,9 @@ static int filter_frame(AVFilterLink *inlink, AVFrame 
*frame)
         case AV_FRAME_DATA_STEREO3D:
             dump_stereo3d(ctx, sd);
             break;
+        case AV_FRAME_DATA_DISPLAYORIENTATION:
+            dump_displayorientation(ctx, sd);
+            break;
         default:
             av_log(ctx, AV_LOG_WARNING, "unknown side data type %d (%d bytes)",
                    sd->type, sd->size);
-- 
1.8.3.4 (Apple Git-47)

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