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Code Issues Releases Activity

avcodec/lsp: Make ff_acelp_lsp2lpc() static

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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2025-04-03 13:42:57 +02:00
parent 2c65d3be81
commit 77b147d3a2
2 changed files with 9 additions and 11 deletions
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12
libavcodec/lsp.c
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@ -150,7 +150,13 @@ static void lsp2polyf(const double *lsp, double *f, int lp_half_order)
}
#endif /* lsp2polyf */
void ff_acelp_lsp2lpc(int16_t* lp, const int16_t* lsp, int lp_half_order)
/**
* @brief LSP to LP conversion (3.2.6 of G.729)
* @param[out] lp decoded LP coefficients (-0x8000 <= (3.12) < 0x8000)
* @param lsp LSP coefficients (-0x8000 <= (0.15) < 0x8000)
* @param lp_half_order LP filter order, divided by 2
*/
static void acelp_lsp2lpc(int16_t lp[], const int16_t lsp[], int lp_half_order)
{
int i;
int f1[MAX_LP_HALF_ORDER+1]; // (3.22)
@ -211,10 +217,10 @@ void ff_acelp_lp_decode(int16_t* lp_1st, int16_t* lp_2nd, const int16_t* lsp_2nd
lsp_1st[i] = (lsp_2nd[i] + lsp_prev[i]) >> 1;
#endif
ff_acelp_lsp2lpc(lp_1st, lsp_1st, lp_order >> 1);
acelp_lsp2lpc(lp_1st, lsp_1st, lp_order >> 1);
/* LSP values for second subframe (3.2.5 of G.729)*/
ff_acelp_lsp2lpc(lp_2nd, lsp_2nd, lp_order >> 1);
acelp_lsp2lpc(lp_2nd, lsp_2nd, lp_order >> 1);
}
void ff_acelp_lspd2lpc(const double *lsp, float *lpc, int lp_half_order)

8
libavcodec/lsp.h
View File

@ -67,14 +67,6 @@ void ff_acelp_lsf2lsp(int16_t *lsp, const int16_t *lsf, int lp_order);
*/
void ff_acelp_lsf2lspd(double *lsp, const float *lsf, int lp_order);
/**
* @brief LSP to LP conversion (3.2.6 of G.729)
* @param[out] lp decoded LP coefficients (-0x8000 <= (3.12) < 0x8000)
* @param lsp LSP coefficients (-0x8000 <= (0.15) < 0x8000)
* @param lp_half_order LP filter order, divided by 2
*/
void ff_acelp_lsp2lpc(int16_t* lp, const int16_t* lsp, int lp_half_order);
/**
* LSP to LP conversion (5.2.4 of AMR-WB)
*/