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Code Issues Releases Activity

avcodec/vvc/sei: add decode_display_orientation

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Signed-off-by: Wu Jianhua <toqsxw@outlook.com>
This commit is contained in:
Wu Jianhua
2025-04-27 19:44:43 +08:00
committed by Nuo Mi
parent d140648c31
commit 40bc5e119e
1 changed files with 27 additions and 0 deletions
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27
libavcodec/vvc/sei.c
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@ -94,6 +94,30 @@ static int decode_decoded_picture_hash(H274SEIPictureHash *h, const SEIRawDecode
return 0;
}
static int decode_display_orientation(H2645SEIDisplayOrientation *h, const SEIRawDisplayOrientation *s)
{
int degrees[] = { 0, 0x8000, 0x4000, 0xC000 };
h->present = !s->display_orientation_cancel_flag;
if (h->present) {
if (s->display_orientation_transform_type > 7)
return AVERROR_INVALIDDATA;
h->vflip = 0;
if (s->display_orientation_transform_type == 1 ||
s->display_orientation_transform_type == 3 ||
s->display_orientation_transform_type == 4 ||
s->display_orientation_transform_type == 6) {
h->hflip = 1;
} else {
h->hflip = 0;
}
h->anticlockwise_rotation = degrees[s->display_orientation_transform_type >> 1];
}
return 0;
}
int ff_vvc_sei_decode(VVCSEI *s, const H266RawSEI *sei, const struct VVCFrameContext *fc)
{
H2645SEI *c = &s->common;
@ -116,6 +140,9 @@ int ff_vvc_sei_decode(VVCSEI *s, const H266RawSEI *sei, const struct VVCFrameCon
case SEI_TYPE_DECODED_PICTURE_HASH:
return decode_decoded_picture_hash(&s->picture_hash, payload);
case SEI_TYPE_DISPLAY_ORIENTATION:
return decode_display_orientation(&s->common.display_orientation, payload);
default:
av_log(fc->log_ctx, AV_LOG_DEBUG, "Skipped %s SEI %d\n",
sei->nal_unit_header.nal_unit_type == VVC_PREFIX_SEI_NUT ?