From 8e7ca22b36e7727d0778d8604b29f81ca1202f19 Mon Sep 17 00:00:00 2001 From: Derek Buitenhuis Date: Thu, 30 May 2024 20:34:24 +0100 Subject: [PATCH] avformat/mov: Add support for reading and exporting horizontal field of view These boxes are created by the Apple Vision Pro and the iPhone 15+ when capture for the Vision Pro is enabled. Based off of the swift API: * https://developer.apple.com/documentation/coremedia/kcmformatdescriptionextension_horizontalfieldofview Signed-off-by: Derek Buitenhuis --- libavformat/mov.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/libavformat/mov.c b/libavformat/mov.c index 5724b4ef93..367af8478b 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -6759,6 +6759,34 @@ static int mov_read_vexu(MOVContext *c, AVIOContext *pb, MOVAtom atom) return 0; } +static int mov_read_hfov(MOVContext *c, AVIOContext *pb, MOVAtom atom) +{ + AVStream *st; + MOVStreamContext *sc; + + if (c->fc->nb_streams < 1) + return 0; + + st = c->fc->streams[c->fc->nb_streams - 1]; + sc = st->priv_data; + + if (atom.size != 4) { + av_log(c->fc, AV_LOG_ERROR, "Invalid size of hfov box: %"PRIu64"\n", atom.size); + return AVERROR_INVALIDDATA; + } + + + if (!sc->stereo3d) { + sc->stereo3d = av_stereo3d_alloc(); + if (!sc->stereo3d) + return AVERROR(ENOMEM); + } + + sc->stereo3d->horizontal_field_of_view = avio_rb32(pb); + + return 0; +} + static int mov_parse_uuid_spherical(MOVStreamContext *sc, AVIOContext *pb, size_t len) { int ret = 0; @@ -8878,6 +8906,7 @@ static const MOVParseTableEntry mov_default_parse_table[] = { { MKTAG('s','t','3','d'), mov_read_st3d }, /* stereoscopic 3D video box */ { MKTAG('s','v','3','d'), mov_read_sv3d }, /* spherical video box */ { MKTAG('v','e','x','u'), mov_read_vexu }, /* video extension usage */ +{ MKTAG('h','f','o','v'), mov_read_hfov }, { MKTAG('d','O','p','s'), mov_read_dops }, { MKTAG('d','m','l','p'), mov_read_dmlp }, { MKTAG('S','m','D','m'), mov_read_smdm },