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Make the special 4129 case for long-run bit strings a #define and explain it
Originally committed as revision 21928 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -63,6 +63,11 @@ typedef struct Vp3Fragment {
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#define SB_PARTIALLY_CODED 1
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#define SB_FULLY_CODED 2
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// This is the maximum length of a single long bit run that can be encoded
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// for superblock coding or block qps. Theora special-cases this to read a
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// bit instead of flipping the current bit to allow for runs longer than 4129.
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#define MAXIMUM_LONG_BIT_RUN 4129
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#define MODE_INTER_NO_MV 0
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#define MODE_INTRA 1
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#define MODE_INTER_PLUS_MV 2
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@ -920,7 +925,7 @@ static int unpack_block_qpis(Vp3DecodeContext *s, GetBitContext *gb)
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}
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}
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if (run_length == 4129)
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if (run_length == MAXIMUM_LONG_BIT_RUN)
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bit = get_bits1(gb);
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else
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bit ^= 1;
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