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Move lpc_compute_autocorr() from DSPContext to a new struct LPCContext.

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Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 56f8952b25)
This commit is contained in:
Justin Ruggles
2011-01-21 00:11:44 +00:00
committed by Michael Niedermayer
parent d3058be6ee
commit 0d8837bdda
12 changed files with 63 additions and 43 deletions
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13
libavcodec/lpc.c
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@@ -20,7 +20,6 @@
*/
#include "libavutil/lls.h"
#include "dsputil.h"
#define LPC_USE_DOUBLE
#include "lpc.h"
@@ -55,7 +54,7 @@ static void apply_welch_window(const int32_t *data, int len, double *w_data)
* Calculate autocorrelation data from audio samples
* A Welch window function is applied before calculation.
*/
void ff_lpc_compute_autocorr(const int32_t *data, int len, int lag,
static void lpc_compute_autocorr_c(const int32_t *data, int len, int lag,
double *autoc)
{
int i, j;
@@ -162,7 +161,7 @@ static int estimate_best_order(double *ref, int min_order, int max_order)
* 1 = LPC with coeffs determined by Levinson-Durbin recursion
* 2+ = LPC with coeffs determined by Cholesky factorization using (use_lpc-1) passes.
*/
int ff_lpc_calc_coefs(DSPContext *s,
int ff_lpc_calc_coefs(LPCContext *s,
const int32_t *samples, int blocksize, int min_order,
int max_order, int precision,
int32_t coefs[][MAX_LPC_ORDER], int *shift,
@@ -236,3 +235,11 @@ int ff_lpc_calc_coefs(DSPContext *s,
return opt_order;
}
av_cold void ff_lpc_init(LPCContext *s)
{
s->lpc_compute_autocorr = lpc_compute_autocorr_c;
if (HAVE_MMX)
ff_lpc_init_x86(s);
}