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| author | arpi_esp <arpi_esp@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2001-02-24 20:28:24 +0000 |
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| committer | arpi_esp <arpi_esp@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2001-02-24 20:28:24 +0000 |
| commit | d34041569e71fc9bd772354e94dc9d16061072a5 (patch) | |
| tree | 8f481cae1c70f32d1756fbe5f39000577b73042d /alaw.c | |
| parent | e95a95ece09bac96bdfd37322f96c6f57ef79ebc (diff) | |
| download | mpv-d34041569e71fc9bd772354e94dc9d16061072a5.tar.bz2 mpv-d34041569e71fc9bd772354e94dc9d16061072a5.tar.xz | |
Initial revision
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@2 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'alaw.c')
| -rw-r--r-- | alaw.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/alaw.c b/alaw.c new file mode 100644 index 0000000000..de8c43962c --- /dev/null +++ b/alaw.c @@ -0,0 +1,29 @@ +// code from xanim sources... +// (I hope that not hurt copyright :o) + +#define xaLONG long +#define xaULONG unsigned long +#define xaBYTE char +#define xaUBYTE unsigned char + +xaULONG long xa_alaw_2_sign[256]; + +void Gen_aLaw_2_Signed() +{ xaULONG i; + for(i=0;i<256;i++) + { xaUBYTE data = (xaUBYTE)(i); + xaLONG d, t, seg; + + data ^= 0x55; + + t = (data & 0xf) << 4; + seg = (data & 0x70) >> 4; + if (seg == 0) t += 8; + else if (seg == 1) t += 0x108; + else { t += 108; t <<= seg - 1; } + + d = (data & 0x80)?(t):(-t); + xa_alaw_2_sign[i] = (xaULONG)((xaULONG)(d) & 0xffff); + } +} + |