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Originally committed as revision 13917 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2008-06-23 20:12:12 +00:00
parent 3890a13173
commit 89a2713e66
1 changed files with 7 additions and 0 deletions
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7
libavcodec/ra144.c
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@ -136,6 +136,13 @@ static void add_wav(int n, int skip_first, int *m, const int16_t *s1,
dest[i] = ((*(s1++))*v[0] + (*(s2++))*v[1] + (*(s3++))*v[2]) >> 12;
}
/**
* LPC Filter. Each output value is predicted from the 10 previous computed
* ones. It overwrites the input with the output.
*
* @param in the input of the filter. It should be an array of size len + 10.
* The 10 first input values are used to evaluate the first filtered one.
*/
static void lpc_filter(const int16_t *lpc_coefs, uint16_t *in, int len)
{
int x, i;