FreeCalypso > hg > gsm-codec-lib
diff libtwamr/c8_31pf.h @ 323:dfd5f159574b
libtwamr: integrate c8_31pf.c
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Thu, 18 Apr 2024 19:47:13 +0000 |
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| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtwamr/c8_31pf.h Thu Apr 18 19:47:13 2024 +0000 @@ -0,0 +1,47 @@ +/* +******************************************************************************** +* +* GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001 +* R99 Version 3.3.0 +* REL-4 Version 4.1.0 +* +******************************************************************************** +* +* File : c8_31pf.h +* Purpose : Searches a 31 bit algebraic codebook containing +* : 8 pulses in a frame of 40 samples. +* +******************************************************************************** +*/ +#ifndef c8_31pf_h +#define c8_31pf_h "$Id $" + +/* +******************************************************************************** +* INCLUDE FILES +******************************************************************************** +*/ +#include "typedef.h" + +/* +******************************************************************************** +* DEFINITION OF DATA TYPES +******************************************************************************** +*/ + +/* +******************************************************************************** +* DECLARATION OF PROTOTYPES +******************************************************************************** +*/ +void code_8i40_31bits ( + Word16 x[], /* i : target vector */ + Word16 cn[], /* i : residual after long term prediction */ + Word16 h[], /* i : impulse response of weighted synthesis + filter */ + Word16 cod[], /* o : algebraic (fixed) codebook excitation */ + Word16 y[], /* o : filtered fixed codebook excitation */ + Word16 indx[] /* o : 7 Word16, index of 8 pulses (signs+positions) */ + ); + +#endif