[FFmpeg-cvslog] avutil/stereo3d: add a Stereo3D type to signal that the packing is unspecified

[James Almer]

ffmpeg | branch: master | James Almer <jamrial at gmail.com> | Sat Jun 22 17:25:40 2024 -0300| [1c8b32e19f8327c1efe8d530b9b6f15e0e9ae120] | committer: James Almer

avutil/stereo3d: add a Stereo3D type to signal that the packing is unspecified

Given that a video stream/frame may have only one view or both views coded with
the packing information being unavailable, this commit adds a new type value
AV_STEREO3D_UNSPEC for this purpose.
The most common case for this is container level signaling of Stereo3D video
where the specifics are defined at the bitstream level.

Signed-off-by: James Almer <jamrial at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=1c8b32e19f8327c1efe8d530b9b6f15e0e9ae120
---

 libavutil/stereo3d.c | 1 +
 libavutil/stereo3d.h | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/libavutil/stereo3d.c b/libavutil/stereo3d.c
index 7ea3dceb33..647f9a952a 100644
--- a/libavutil/stereo3d.c
+++ b/libavutil/stereo3d.c
@@ -74,6 +74,7 @@ static const char * const stereo3d_type_names[] = {
     [AV_STEREO3D_SIDEBYSIDE_QUINCUNX] = "side by side (quincunx subsampling)",
     [AV_STEREO3D_LINES]               = "interleaved lines",
     [AV_STEREO3D_COLUMNS]             = "interleaved columns",
+    [AV_STEREO3D_UNSPEC]              = "unspecified",
 };
 
 static const char * const stereo3d_view_names[] = {
diff --git a/libavutil/stereo3d.h b/libavutil/stereo3d.h
index 386455a5a4..e3da3257d7 100644
--- a/libavutil/stereo3d.h
+++ b/libavutil/stereo3d.h
@@ -136,6 +136,11 @@ enum AVStereo3DType {
      * @endcode
      */
     AV_STEREO3D_COLUMNS,
+
+    /**
+     * Video is stereoscopic but the packing is unspecified.
+     */
+    AV_STEREO3D_UNSPEC,
 };
 
 /**