mirror of https://git.ffmpeg.org/ffmpeg.git
avformat/vvc: fix parsing sps_subpic_id
The length of the sps_subpic_id[i] syntax element is sps_subpic_id_len_minus1 + 1 bits. Signed-off-by: James Almer <jamrial@gmail.com>
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@ -371,6 +371,7 @@ static int vvcc_parse_sps(GetBitContext *gb,
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const int tmp_height_val = AV_CEIL_RSHIFT(sps_pic_height_max_in_luma_samples, ctb_log2_size_y);
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const int wlen = av_ceil_log2(tmp_width_val);
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const int hlen = av_ceil_log2(tmp_height_val);
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unsigned int sps_subpic_id_len;
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if (sps_num_subpics_minus1 > 0) { // sps_num_subpics_minus1
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sps_independent_subpics_flag = get_bits1(gb);
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sps_subpic_same_size_flag = get_bits1(gb);
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@ -390,11 +391,11 @@ static int vvcc_parse_sps(GetBitContext *gb,
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skip_bits(gb, 2); // sps_subpic_treated_as_pic_flag && sps_loop_filter_across_subpic_enabled_flag
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}
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}
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get_ue_golomb_long(gb); // sps_subpic_id_len_minus1
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sps_subpic_id_len = get_ue_golomb_long(gb) + 1;
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if (get_bits1(gb)) { // sps_subpic_id_mapping_explicitly_signalled_flag
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if (get_bits1(gb)) // sps_subpic_id_mapping_present_flag
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for (int i = 0; i <= sps_num_subpics_minus1; i++) {
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skip_bits1(gb); // sps_subpic_id[i]
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skip_bits_long(gb, sps_subpic_id_len); // sps_subpic_id[i]
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}
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}
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}
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