[FFmpeg-devel] [PATCH] G.729 LSF decoding

[Michael Niedermayer]

On Thu, Jun 25, 2009 at 09:45:59AM +0700, Vladimir Voroshilov wrote:
> 2009/6/25 Michael Niedermayer <michaelni at gmx.at>:
[...]
> @@ -263,6 +282,12 @@ static const int16_t cb_ma_predictor[2][MA_NP][10] = { /* (0.15) */
>    }
>  };
>  
> +/**
> + *                                     15         3
> + * cb_ma_predictor_sum[j][i] = floor( 2 * (1.0 - sum ( cb_ma_predictor_float[j][k][i] ) ) )
> + *                                        k=0

vertical positions ...


[...]
> @@ -169,6 +169,13 @@ static void lsf_decode(int16_t* lsfq, int16_t* past_quantizer_outputs[MA_NP + 1]
>      ff_acelp_reorder_lsf(lsfq, LSFQ_DIFF_MIN, LSFQ_MIN, LSFQ_MAX, 10);
>  }
>  
> +/**
> + * Restores LSP parameters using data from previous frame
[...]
>  static void lsf_restore_from_previous(int16_t* lsfq,

lsf or lsp ?

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Awnsering whenever a program halts or runs forever is
On a turing machine, in general impossible (turings halting problem).
On any real computer, always possible as a real computer has a finite number
of states N, and will either halt in less than N cycles or never halt.
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