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avcodec/dovi_rpudec: reject reserved_zero_3bits != 0

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This is used by future versions of the spec to implement metadata
compression. Given that we don't yet implement that spec, validate that
this is equal to 0 for now.
This commit is contained in:
Niklas Haas 2024-06-09 16:57:31 +02:00
parent d9f902d3a4
commit 0a5ed91e5e
1 changed files with 3 additions and 1 deletions
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libavcodec/dovi_rpudec.c
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@ -424,6 +424,7 @@ int ff_dovi_rpu_parse(DOVIContext *s, const uint8_t *rpu, size_t rpu_size,
int bl_bit_depth_minus8 = get_ue_golomb_31(gb);
int el_bit_depth_minus8 = get_ue_golomb_31(gb);
int vdr_bit_depth_minus8 = get_ue_golomb_31(gb);
int reserved_zero_3bits;
VALIDATE(bl_bit_depth_minus8, 0, 8);
VALIDATE(el_bit_depth_minus8, 0, 8);
VALIDATE(vdr_bit_depth_minus8, 0, 8);
@ -431,7 +432,8 @@ int ff_dovi_rpu_parse(DOVIContext *s, const uint8_t *rpu, size_t rpu_size,
hdr->el_bit_depth = el_bit_depth_minus8 + 8;
hdr->vdr_bit_depth = vdr_bit_depth_minus8 + 8;
hdr->spatial_resampling_filter_flag = get_bits1(gb);
skip_bits(gb, 3); /* reserved_zero_3bits */
reserved_zero_3bits = get_bits(gb, 3);
VALIDATE(reserved_zero_3bits, 0, 0);
hdr->el_spatial_resampling_filter_flag = get_bits1(gb);
hdr->disable_residual_flag = get_bits1(gb);
}