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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 56f8952b252f85281317ecd3e0b04c4cae93fd72)
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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24
libavcodec/lpc.h
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@ -36,18 +36,36 @@
#define MAX_LPC_ORDER 32
typedef struct LPCContext {
/**
* Perform autocorrelation on input samples with delay of 0 to lag.
* @param data input samples.
* no alignment needed.
* @param len number of input samples to process
* @param lag maximum delay to calculate
* @param autoc output autocorrelation coefficients.
* constraints: array size must be at least lag+1.
*/
void (*lpc_compute_autocorr)(const int32_t *data, int len, int lag,
double *autoc);
} LPCContext;
/**
* Calculate LPC coefficients for multiple orders
*/
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,
enum AVLPCType lpc_type, int lpc_passes,
int omethod, int max_shift, int zero_shift);
void ff_lpc_compute_autocorr(const int32_t *data, int len, int lag,
double *autoc);
/**
* Initialize LPCContext.
*/
void ff_lpc_init(LPCContext *s);
void ff_lpc_init_x86(LPCContext *s);
#ifdef LPC_USE_DOUBLE
#define LPC_TYPE double