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    • Mark Harris's avatar
      avcodec: Use get_ue_golomb_long() when needed · c51c08e0
      Mark Harris authored
      get_ue_golomb() cannot decode values larger than 8190 (the maximum
      value that can be golomb encoded in 25 bits) and produces the error
      "Invalid UE golomb code" if a larger value is encountered.  Use
      get_ue_golomb_long() instead (which supports 63 bits, up to 4294967294)
      when valid h264/hevc values can exceed 8190.
      
      This updates decoding of the following values:   (maximum)
        first_mb_in_slice                                36863* for level 5.2
        abs_diff_pic_num_minus1                         131071
        difference_of_pic_nums_minus1                   131071
        idr_pic_id                                       65535
        recovery_frame_cnt                               65535
        frame_packing_arrangement_id                4294967294
        frame_packing_arrangement_repetition_period      16384
        display_orientation_repetition_period            16384
      
      An alternative would be to modify get_ue_golomb() to handle encoded
      values of up to 49 bits as was done for get_se_golomb() in a92816c4.
      In that case get_ue_golomb() could continue to be used for all of
      these except frame_packing_arrangement_id.
      Signed-off-by: 's avatarMichael Niedermayer <michael@niedermayer.cc>
      c51c08e0
  15. 01 Nov, 2015 1 commit
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