diff options
Diffstat (limited to 'libavcodec/lsp.h')
| -rw-r--r-- | libavcodec/lsp.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/libavcodec/lsp.h b/libavcodec/lsp.h index 2337756406..0fa585016a 100644 --- a/libavcodec/lsp.h +++ b/libavcodec/lsp.h @@ -67,4 +67,14 @@ void ff_acelp_lsp2lpc(int16_t* lp, const int16_t* lsp, int lp_half_order); */ void ff_acelp_lp_decode(int16_t* lp_1st, int16_t* lp_2nd, const int16_t* lsp_2nd, const int16_t* lsp_prev, int lp_order); +/** + * Reconstructs LPC coefficients from the line spectral pair frequencies. + * + * @param lsp line spectral pairs in cosine domain + * @param lpc linear predictive coding coefficients + * + * TIA/EIA/IS-733 2.4.3.3.5 + */ +void ff_acelp_lspd2lpc(const double *lsp, float *lpc); + #endif /* AVCODEC_LSP_H */ |