[FFmpeg-cvslog] avformat/movenc: add support for writting hfov boxes

[James Almer]

ffmpeg | branch: master | James Almer <jamrial at gmail.com> | Fri Jun 21 15:20:37 2024 -0300| [aa8230c7baad1be07f77da735c9740b3f031c5fd] | committer: James Almer

avformat/movenc: add support for writting hfov boxes

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=aa8230c7baad1be07f77da735c9740b3f031c5fd
---

 libavformat/movenc.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index afc2af2fef..b5c02d2198 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -2195,6 +2195,17 @@ static inline int64_t rescale_rational(AVRational q, int b)
     return av_rescale(q.num, b, q.den);
 }
 
+static void mov_write_hfov_tag(AVFormatContext *s, AVIOContext *pb,
+                              const AVStereo3D *stereo3d)
+{
+    if (!stereo3d->horizontal_field_of_view.num)
+        return;
+
+    avio_wb32(pb, 12); /* size */
+    ffio_wfourcc(pb, "hfov");
+    avio_wb32(pb, rescale_rational(stereo3d->horizontal_field_of_view, 1000));
+}
+
 static void mov_write_vexu_proj_tag(AVFormatContext *s, AVIOContext *pb,
                                     const AVSphericalMapping *spherical_mapping)
 {
@@ -2770,6 +2781,8 @@ static int mov_write_video_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex
 
         if (stereo3d || spherical_mapping)
             mov_write_vexu_tag(s, pb, stereo3d, spherical_mapping);
+        if (stereo3d)
+            mov_write_hfov_tag(s, pb, stereo3d);
     }
 
     if (track->mode == MODE_MP4) {