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Cosmetics to improve xan_unpack readability 

Originally committed as revision 18590 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2009-04-17 19:14:11 +00:00
parent 16cc5a738c
commit e5986d0427
1 changed files with 4 additions and 4 deletions
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8
libavcodec/xan.c
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@ -140,22 +140,22 @@ static void xan_unpack(unsigned char *dest, const unsigned char *src, int dest_l
size = opcode & 3;
back = ((opcode & 0x60) << 3) + *src++ + 1;
size2 = ((opcode & 0x1c) >> 2) + 3;
back = ((opcode & 0x60) << 3) + *src++ + 1;
} else if ( (opcode & 0x40) == 0 ) {
size = *src >> 6;
back = (bytestream_get_be16(&src) & 0x3fff) + 1;
size2 = (opcode & 0x3f) + 4;
back = (bytestream_get_be16(&src) & 0x3fff) + 1;
} else {
size = opcode & 3;
back = ((opcode & 0x10) << 12) + 1 + bytestream_get_be16(&src);
size2 = *src++ + 5 + ((opcode & 0xc) << 6);
back = ((opcode & 0x10) << 12) + bytestream_get_be16(&src) + 1;
size2 = ((opcode & 0x0c) << 6) + *src++ + 5;
if (size + size2 > dest_end - dest)
return;
}