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avcodec/lsp: Make ff_lsp2polyf() static 

Possible since 48ac225db2.
Furthermore, the current code would not work on mips
in case ff_lsp2polyf() were used outside of lsp.c,
because it is not compiled on mips since commit
3827a86eac at all;
instead it is overridden with a static av_always_inline
function which only works for the callers in lsp.c.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-09-25 16:22:21 +02:00
parent e0980629d8
commit c35a6709d0
3 changed files with 23 additions and 25 deletions
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24
libavcodec/lsp.c
View File

@ -124,8 +124,18 @@ static void lsp2poly(int* f, const int16_t* lsp, int lp_half_order)
}
}
#ifndef ff_lsp2polyf
void ff_lsp2polyf(const double *lsp, double *f, int lp_half_order)
#ifndef lsp2polyf
/**
* Compute the Pa / (1 + z(-1)) or Qa / (1 - z(-1)) coefficients
* needed for LSP to LPC conversion.
* We only need to calculate the 6 first elements of the polynomial.
*
* @param lsp line spectral pairs in cosine domain
* @param[out] f polynomial input/output as a vector
*
* TIA/EIA/IS-733 2.4.3.3.5-1/2
*/
static void lsp2polyf(const double *lsp, double *f, int lp_half_order)
{
f[0] = 1.0;
f[1] = -2 * lsp[0];
@ -138,7 +148,7 @@ void ff_lsp2polyf(const double *lsp, double *f, int lp_half_order)
f[1] += val;
}
}
#endif /* ff_lsp2polyf */
#endif /* lsp2polyf */
void ff_acelp_lsp2lpc(int16_t* lp, const int16_t* lsp, int lp_half_order)
{
@ -172,8 +182,8 @@ void ff_amrwb_lsp2lpc(const double *lsp, float *lp, int lp_order)
qa[-1] = 0.0;
ff_lsp2polyf(lsp , pa, lp_half_order );
ff_lsp2polyf(lsp + 1, qa, lp_half_order - 1);
lsp2polyf(lsp , pa, lp_half_order );
lsp2polyf(lsp + 1, qa, lp_half_order - 1);
for (i = 1, j = lp_order - 1; i < lp_half_order; i++, j--) {
double paf = pa[i] * (1 + lsp[lp_order - 1]);
@ -214,8 +224,8 @@ void ff_acelp_lspd2lpc(const double *lsp, float *lpc, int lp_half_order)
av_assert2(lp_half_order <= MAX_LP_HALF_ORDER);
ff_lsp2polyf(lsp, pa, lp_half_order);
ff_lsp2polyf(lsp + 1, qa, lp_half_order);
lsp2polyf(lsp, pa, lp_half_order);
lsp2polyf(lsp + 1, qa, lp_half_order);
while (lp_half_order--) {
double paf = pa[lp_half_order+1] + pa[lp_half_order];

12
libavcodec/lsp.h
View File

@ -115,16 +115,4 @@ void ff_acelp_lspd2lpc(const double *lsp, float *lpc, int lp_half_order);
*/
void ff_sort_nearly_sorted_floats(float *vals, int len);
/**
* Compute the Pa / (1 + z(-1)) or Qa / (1 - z(-1)) coefficients
* needed for LSP to LPC conversion.
* We only need to calculate the 6 first elements of the polynomial.
*
* @param lsp line spectral pairs in cosine domain
* @param[out] f polynomial input/output as a vector
*
* TIA/EIA/IS-733 2.4.3.3.5-1/2
*/
void ff_lsp2polyf(const double *lsp, double *f, int lp_half_order);
#endif /* AVCODEC_LSP_H */

12
libavcodec/mips/lsp_mips.h
View File

@ -61,7 +61,7 @@
#include "libavutil/attributes.h"
#include "libavutil/mips/asmdefs.h"
static av_always_inline void ff_lsp2polyf_mips(const double *lsp, double *f, int lp_half_order)
static av_always_inline void lsp2polyf_mips(const double *lsp, double *f, int lp_half_order)
{
int i, j = 0;
double * p_fi = f;
@ -88,8 +88,8 @@ static av_always_inline void ff_lsp2polyf_mips(const double *lsp, double *f, int
"addiu %[j], %[i], -2 \n\t"
"ldc1 %[f_j_2], -8(%[p_f]) \n\t"
"sdc1 %[tmp], 16(%[p_f]) \n\t"
"beqz %[j], ff_lsp2polyf_lp_j_end%= \n\t"
"ff_lsp2polyf_lp_j%=: \n\t"
"beqz %[j], lsp2polyf_lp_j_end%= \n\t"
"lsp2polyf_lp_j%=: \n\t"
"add.d %[tmp], %[f_j], %[f_j_2] \n\t"
"madd.d %[tmp], %[tmp], %[f_j_1], %[val] \n\t"
"mov.d %[f_j], %[f_j_1] \n\t"
@ -98,8 +98,8 @@ static av_always_inline void ff_lsp2polyf_mips(const double *lsp, double *f, int
"ldc1 %[f_j_2], -16(%[p_f]) \n\t"
"sdc1 %[tmp], 8(%[p_f]) \n\t"
PTR_ADDIU "%[p_f], -8 \n\t"
"bgtz %[j], ff_lsp2polyf_lp_j%= \n\t"
"ff_lsp2polyf_lp_j_end%=: \n\t"
"bgtz %[j], lsp2polyf_lp_j%= \n\t"
"lsp2polyf_lp_j_end%=: \n\t"
: [f_j_2]"=&f"(f_j_2), [f_j_1]"=&f"(f_j_1), [val]"+f"(val),
[tmp]"=&f"(tmp), [f_j]"=&f"(f_j), [p_f]"+r"(p_f),
@ -110,7 +110,7 @@ static av_always_inline void ff_lsp2polyf_mips(const double *lsp, double *f, int
f[1] += val;
}
}
#define ff_lsp2polyf ff_lsp2polyf_mips
#define lsp2polyf lsp2polyf_mips
#endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */
#endif /* HAVE_MIPSFPU && HAVE_INLINE_ASM */
#endif /* AVCODEC_MIPS_LSP_MIPS_H */