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avformat/mov: relax check on proj box size

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Pico VR adds a '\0' after projection_type (a real C string than
a fourcc). It's not strictly correct, but doesn't affect parsing.

[prji: Projection Information Box]
    position = 149574743
    size = 17
    version = 0
    flags = 0x000000
    projection_type = rect

Co-Authored-by: Keven Ma
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
This commit is contained in:
Zhao Zhili
2025-10-28 15:43:46 +08:00
parent 84fcbce16c
commit 0734d1c55a
1 changed files with 4 additions and 2 deletions
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6
libavformat/mov.c
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@@ -6853,15 +6853,17 @@ static int mov_read_vexu_proj(MOVContext *c, AVIOContext *pb, MOVAtom atom)
st = c->fc->streams[c->fc->nb_streams - 1];
sc = st->priv_data;
if (atom.size != 16) {
if (atom.size < 16) {
av_log(c->fc, AV_LOG_ERROR, "Invalid size for proj box: %"PRIu64"\n", atom.size);
return AVERROR_INVALIDDATA;
}
size = avio_rb32(pb);
if (size != 16) {
if (size < 16) {
av_log(c->fc, AV_LOG_ERROR, "Invalid size for prji box: %d\n", size);
return AVERROR_INVALIDDATA;
} else if (size > 16) {
av_log(c->fc, AV_LOG_WARNING, "Box has more bytes (%d) than prji box required (16) \n", size);
}
tag = avio_rl32(pb);