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lavc/hevcdec: Fix the parsing for use_integer_mv_flag

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According to 7.3.6.1, use_integer_mv_flag should be parsed if
motion_vector_resolution_control_idc equals to 2. If not present, it
equals to motion_vector_resolution_control_idc.

Signed-off-by: Linjie Fu <linjie.justin.fu@gmail.com>
Signed-off-by: Fei Wang <fei.w.wang@intel.com>
This commit is contained in:
Linjie Fu 2023-02-16 13:46:31 +08:00 committed by Haihao Xiang
parent c1dceaf0c7
commit 513d188d9b
2 changed files with 9 additions and 0 deletions
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8
libavcodec/hevcdec.c
View File

@ -839,6 +839,14 @@ static int hls_slice_header(HEVCContext *s)
sh->max_num_merge_cand);
return AVERROR_INVALIDDATA;
}
// Syntax in 7.3.6.1
if (s->ps.sps->motion_vector_resolution_control_idc == 2)
sh->use_integer_mv_flag = get_bits1(gb);
else
// Inferred to be equal to motion_vector_resolution_control_idc if not present
sh->use_integer_mv_flag = s->ps.sps->motion_vector_resolution_control_idc;
}
sh->slice_qp_delta = get_se_golomb(gb);

1
libavcodec/hevcdec.h
View File

@ -305,6 +305,7 @@ typedef struct SliceHeader {
int tc_offset; ///< tc_offset_div2 * 2
unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
uint8_t use_integer_mv_flag;
unsigned *entry_point_offset;
int * offset;