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avcodec/hevc/sei: don't attempt to use stale values in HEVCSEITDRDI

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Invalidate the whole struct on SEI reset.

Signed-off-by: James Almer <jamrial@gmail.com>
(cherry picked from commit 8e01bff774aeacdeb8cc9fb5a6fe8c958bdfa704)
This commit is contained in:
James Almer 2025-10-09 00:31:57 -03:00
parent 046a8293e1
commit dd00a614e1
3 changed files with 5 additions and 1 deletions
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2
libavcodec/hevc/hevcdec.c
View file

@ -4106,7 +4106,7 @@ static int hevc_sei_to_context(AVCodecContext *avctx, HEVCSEI *sei)
{
int ret;
if (sei->tdrdi.num_ref_displays) {
if (sei->tdrdi.present) {
AVBufferRef *buf;
size_t size;
AV3DReferenceDisplaysInfo *tdrdi = av_tdrdi_alloc(sei->tdrdi.num_ref_displays, &size);

2
libavcodec/hevc/sei.c
View file

@ -217,6 +217,8 @@ static int decode_nal_sei_3d_reference_displays_info(HEVCSEITDRDI *s, GetBitCont
}
s->three_dimensional_reference_displays_extension_flag = get_bits1(gb);
s->present = 1;
return 0;
}

2
libavcodec/hevc/sei.h
View file

@ -93,6 +93,7 @@ typedef struct HEVCSEITDRDI {
uint8_t additional_shift_present_flag[32];
int16_t num_sample_shift[32];
uint8_t three_dimensional_reference_displays_extension_flag;
int present;
} HEVCSEITDRDI;
typedef struct HEVCSEIRecoveryPoint {
@ -126,6 +127,7 @@ int ff_hevc_decode_nal_sei(GetBitContext *gb, void *logctx, HEVCSEI *s,
*/
static inline void ff_hevc_reset_sei(HEVCSEI *sei)
{
sei->tdrdi.present = 0;
ff_h2645_sei_reset(&sei->common);
}