stereo3d: Add API to get name from value or value from name

Use it in av_dump_format() instead of a huge switch case.

1 files changed, 33 insertions, 0 deletions

diff --git a/libavutil/stereo3d.c b/libavutil/stereo3d.c
index 2dcfddf14b..0d72609cd0 100644
--- a/libavutil/stereo3d.c
+++ b/libavutil/stereo3d.c
@@ -21,6 +21,7 @@
 #include <stdint.h>
 #include <string.h>
 
+#include "common.h"
 #include "mem.h"
 #include "stereo3d.h"
 
@@ -41,3 +42,35 @@ AVStereo3D *av_stereo3d_create_side_data(AVFrame *frame)
 
     return (AVStereo3D *)side_data->data;
 }
+
+static const char *stereo3d_type_names[] = {
+    [AV_STEREO3D_2D]                  = "2D",
+    [AV_STEREO3D_SIDEBYSIDE]          = "side by side",
+    [AV_STEREO3D_TOPBOTTOM]           = "top and bottom",
+    [AV_STEREO3D_FRAMESEQUENCE]       = "frame alternate",
+    [AV_STEREO3D_CHECKERBOARD]        = "checkerboard",
+    [AV_STEREO3D_SIDEBYSIDE_QUINCUNX] = "side by side (quincunx subsampling)",
+    [AV_STEREO3D_LINES]               = "interleaved lines",
+    [AV_STEREO3D_COLUMNS]             = "interleaved columns",
+};
+
+const char *av_stereo3d_type_name(unsigned int type)
+{
+    if (type >= FF_ARRAY_ELEMS(stereo3d_type_names))
+        return "unknown";
+
+    return stereo3d_type_names[type];
+}
+
+int av_stereo3d_from_name(const char *name)
+{
+    int i;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(stereo3d_type_names); i++) {
+        size_t len = strlen(stereo3d_type_names[i]);
+        if (!strncmp(stereo3d_type_names[i], name, len))
+            return i;
+    }
+
+    return -1;
+}