mirror of
https://github.com/asterisk/asterisk.git
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448 lines
12 KiB
C
448 lines
12 KiB
C
/*
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$Log$
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Revision 1.18 2003/10/21 18:08:11 markster
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Fix include order
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Revision 1.5 2003/10/21 18:08:11 markster
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Fix include order
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Revision 1.4 2003/10/21 02:57:29 markster
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FreeBSD patch, take 2
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Revision 1.3 2003/10/16 21:11:30 martinp
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Revert the previous patch since it's braking compilation
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Revision 1.1 2003/02/12 13:59:15 matteo
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Initial revision
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Revision 1.2 2000/01/05 08:20:39 markster
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Some OSS fixes and a few lpc changes to make it actually work
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* Revision 1.2 1996/08/20 20:35:41 jaf
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* Added functions for allocating and initializing lpc10_encoder_state
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* and lpc10_decoder_state structures.
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*
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* Revision 1.1 1996/08/19 22:31:40 jaf
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* Initial revision
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*
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*/
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/* -- translated by f2c (version 19951025).
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You must link the resulting object file with the libraries:
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-lf2c -lm (in that order)
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*/
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#define ASTMM_LIBC ASTMM_REDIRECT
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#include "asterisk.h"
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#include "f2c.h"
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#ifdef P_R_O_T_O_T_Y_P_E_S
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extern int lpcini_(void);
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/* comlen contrl_ 12 */
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/*:ref: initlpcenc_ 14 0 */
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/*:ref: initlpcdec_ 14 0 */
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#endif
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/* Common Block Declarations */
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struct {
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integer order, lframe;
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logical corrp;
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} contrl_;
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#define contrl_1 contrl_
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/* ***************************************************************** */
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/* $Log$
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* Revision 1.18 2003/10/21 18:08:11 markster
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* Fix include order
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*
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* Revision 1.5 2003/10/21 18:08:11 markster
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* Fix include order
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*
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* Revision 1.4 2003/10/21 02:57:29 markster
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* FreeBSD patch, take 2
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*
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* Revision 1.3 2003/10/16 21:11:30 martinp
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* Revert the previous patch since it's braking compilation
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*
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* Revision 1.1 2003/02/12 13:59:15 matteo
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* Initial revision
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*
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* Revision 1.2 2000/01/05 08:20:39 markster
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* Some OSS fixes and a few lpc changes to make it actually work
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*
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* Revision 1.2 1996/08/20 20:35:41 jaf
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* Added functions for allocating and initializing lpc10_encoder_state
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* and lpc10_decoder_state structures.
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*
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* Revision 1.1 1996/08/19 22:31:40 jaf
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* Initial revision
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* */
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/* Revision 1.1 1996/03/28 00:04:05 jaf */
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/* Initial revision */
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/* ***************************************************************** */
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/* Initialize COMMON block variables used by LPC-10 encoder and decoder, */
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/* and call initialization routines for both of them. */
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/* Subroutine */ int lpcini_(void)
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{
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/* $Log$
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* Revision 1.18 2003/10/21 18:08:11 markster
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* Fix include order
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*
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* Revision 1.5 2003/10/21 18:08:11 markster
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* Fix include order
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*
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* Revision 1.4 2003/10/21 02:57:29 markster
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* FreeBSD patch, take 2
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*
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* Revision 1.3 2003/10/16 21:11:30 martinp
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* Revert the previous patch since it's braking compilation
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*
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* Revision 1.1 2003/02/12 13:59:15 matteo
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* Initial revision
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*
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* Revision 1.2 2000/01/05 08:20:39 markster
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* Some OSS fixes and a few lpc changes to make it actually work
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*
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* Revision 1.2 1996/08/20 20:35:41 jaf
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* Added functions for allocating and initializing lpc10_encoder_state
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* and lpc10_decoder_state structures.
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*
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* Revision 1.1 1996/08/19 22:31:40 jaf
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* Initial revision
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* */
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/* Revision 1.3 1996/03/29 22:03:47 jaf */
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/* Removed definitions for any constants that were no longer used. */
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/* Revision 1.2 1996/03/26 19:34:33 jaf */
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/* Added comments indicating which constants are not needed in an */
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/* application that uses the LPC-10 coder. */
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/* Revision 1.1 1996/02/07 14:43:51 jaf */
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/* Initial revision */
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/* LPC Configuration parameters: */
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/* Frame size, Prediction order, Pitch period */
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/* $Log$
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* Revision 1.18 2003/10/21 18:08:11 markster
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* Fix include order
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*
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* Revision 1.5 2003/10/21 18:08:11 markster
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* Fix include order
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*
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* Revision 1.4 2003/10/21 02:57:29 markster
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* FreeBSD patch, take 2
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*
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* Revision 1.3 2003/10/16 21:11:30 martinp
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* Revert the previous patch since it's braking compilation
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*
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* Revision 1.1 2003/02/12 13:59:15 matteo
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* Initial revision
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*
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* Revision 1.2 2000/01/05 08:20:39 markster
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* Some OSS fixes and a few lpc changes to make it actually work
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*
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* Revision 1.2 1996/08/20 20:35:41 jaf
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* Added functions for allocating and initializing lpc10_encoder_state
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* and lpc10_decoder_state structures.
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*
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* Revision 1.1 1996/08/19 22:31:40 jaf
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* Initial revision
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* */
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/* Revision 1.3 1996/03/29 22:05:55 jaf */
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/* Commented out the common block variables that are not needed by the */
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/* embedded version. */
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/* Revision 1.2 1996/03/26 19:34:50 jaf */
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/* Added comments indicating which constants are not needed in an */
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/* application that uses the LPC-10 coder. */
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/* Revision 1.1 1996/02/07 14:44:09 jaf */
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/* Initial revision */
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/* LPC Processing control variables: */
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/* *** Read-only: initialized in setup */
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/* Files for Speech, Parameter, and Bitstream Input & Output, */
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/* and message and debug outputs. */
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/* Here are the only files which use these variables: */
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/* lpcsim.f setup.f trans.f error.f vqsetup.f */
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/* Many files which use fdebug are not listed, since it is only used in */
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/* those other files conditionally, to print trace statements. */
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/* integer fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
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/* LPC order, Frame size, Quantization rate, Bits per frame, */
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/* Error correction */
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/* Subroutine SETUP is the only place where order is assigned a value, */
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/* and that value is 10. It could increase efficiency 1% or so to */
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/* declare order as a constant (i.e., a Fortran PARAMETER) instead of as
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*/
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/* a variable in a COMMON block, since it is used in many places in the */
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/* core of the coding and decoding routines. Actually, I take that back.
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*/
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/* At least when compiling with f2c, the upper bound of DO loops is */
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/* stored in a local variable before the DO loop begins, and then that is
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*/
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/* compared against on each iteration. */
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/* Similarly for lframe, which is given a value of MAXFRM in SETUP. */
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/* Similarly for quant, which is given a value of 2400 in SETUP. quant */
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/* is used in only a few places, and never in the core coding and */
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/* decoding routines, so it could be eliminated entirely. */
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/* nbits is similar to quant, and is given a value of 54 in SETUP. */
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/* corrp is given a value of .TRUE. in SETUP, and is only used in the */
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/* subroutines ENCODE and DECODE. It doesn't affect the speed of the */
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/* coder significantly whether it is .TRUE. or .FALSE., or whether it is
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*/
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/* a constant or a variable, since it is only examined once per frame. */
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/* Leaving it as a variable that is set to .TRUE. seems like a good */
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/* idea, since it does enable some error-correction capability for */
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/* unvoiced frames, with no change in the coding rate, and no noticeable
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*/
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/* quality difference in the decoded speech. */
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/* integer quant, nbits */
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/* *** Read/write: variables for debugging, not needed for LPC algorithm
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*/
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/* Current frame, Unstable frames, Output clip count, Max onset buffer,
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*/
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/* Debug listing detail level, Line count on listing page */
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/* nframe is not needed for an embedded LPC10 at all. */
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/* nunsfm is initialized to 0 in SETUP, and incremented in subroutine */
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/* ERROR, which is only called from RCCHK. When LPC10 is embedded into */
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/* an application, I would recommend removing the call to ERROR in RCCHK,
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*/
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/* and remove ERROR and nunsfm completely. */
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/* iclip is initialized to 0 in SETUP, and incremented in entry SWRITE in
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*/
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/* sread.f. When LPC10 is embedded into an application, one might want */
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/* to cause it to be incremented in a routine that takes the output of */
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/* SYNTHS and sends it to an audio device. It could be optionally */
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/* displayed, for those that might want to know what it is. */
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/* maxosp is never initialized to 0 in SETUP, although it probably should
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*/
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/* be, and it is updated in subroutine ANALYS. I doubt that its value */
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/* would be of much interest to an application in which LPC10 is */
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/* embedded. */
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/* listl and lincnt are not needed for an embedded LPC10 at all. */
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/* integer nframe, nunsfm, iclip, maxosp, listl, lincnt */
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/* common /contrl/ fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
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/* common /contrl/ quant, nbits */
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/* common /contrl/ nframe, nunsfm, iclip, maxosp, listl, lincnt */
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contrl_1.order = 10;
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contrl_1.lframe = 180;
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contrl_1.corrp = TRUE_;
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return 0;
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} /* lpcini_ */
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/* Allocate memory for, and initialize, the state that needs to be
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kept from encoding one frame to the next for a single
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LPC-10-compressed audio stream. Return 0 if malloc fails,
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otherwise return pointer to new structure. */
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struct lpc10_encoder_state *
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create_lpc10_encoder_state()
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{
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struct lpc10_encoder_state *st;
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st = (struct lpc10_encoder_state *)
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malloc((unsigned) sizeof (struct lpc10_encoder_state));
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if (st != 0) {
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init_lpc10_encoder_state(st);
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}
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return (st);
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}
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void init_lpc10_encoder_state(struct lpc10_encoder_state *st)
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{
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int i;
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lpcini_();
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/* State used only by function hp100 */
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st->z11 = 0.0f;
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st->z21 = 0.0f;
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st->z12 = 0.0f;
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st->z22 = 0.0f;
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/* State used by function analys */
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for (i = 0; i < 540; i++) {
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st->inbuf[i] = 0.0f;
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st->pebuf[i] = 0.0f;
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}
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for (i = 0; i < 696; i++) {
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st->lpbuf[i] = 0.0f;
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}
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for (i = 0; i < 312; i++) {
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st->ivbuf[i] = 0.0f;
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}
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st->bias = 0.0f;
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/* integer osbuf[10]; */ /* no initial value necessary */
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st->osptr = 1;
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for (i = 0; i < 3; i++) {
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st->obound[i] = 0;
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}
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st->vwin[4] = 307;
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st->vwin[5] = 462;
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st->awin[4] = 307;
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st->awin[5] = 462;
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for (i = 0; i < 8; i++) {
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st->voibuf[i] = 0;
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}
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for (i = 0; i < 3; i++) {
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st->rmsbuf[i] = 0.0f;
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}
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for (i = 0; i < 30; i++) {
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st->rcbuf[i] = 0.0f;
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}
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st->zpre = 0.0f;
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/* State used by function onset */
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st->n = 0.0f;
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st->d__ = 1.0f;
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/* real fpc; */ /* no initial value necessary */
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for (i = 0; i < 16; i++) {
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st->l2buf[i] = 0.0f;
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}
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st->l2sum1 = 0.0f;
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st->l2ptr1 = 1;
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st->l2ptr2 = 9;
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/* integer lasti; */ /* no initial value necessary */
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st->hyst = FALSE_;
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/* State used by function voicin */
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st->dither = 20.0f;
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st->maxmin = 0.0f;
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for (i = 0; i < 6; i++) {
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st->voice[i] = 0.0f;
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}
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st->lbve = 3000;
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st->fbve = 3000;
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st->fbue = 187;
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st->ofbue = 187;
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st->sfbue = 187;
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st->lbue = 93;
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st->olbue = 93;
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st->slbue = 93;
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st->snr = (real) (st->fbve / st->fbue << 6);
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/* State used by function dyptrk */
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for (i = 0; i < 60; i++) {
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st->s[i] = 0.0f;
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}
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for (i = 0; i < 120; i++) {
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st->p[i] = 0;
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}
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st->ipoint = 0;
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st->alphax = 0.0f;
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/* State used by function chanwr */
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st->isync = 0;
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}
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/* Allocate memory for, and initialize, the state that needs to be
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kept from decoding one frame to the next for a single
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LPC-10-compressed audio stream. Return 0 if malloc fails,
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otherwise return pointer to new structure. */
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struct lpc10_decoder_state *
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create_lpc10_decoder_state()
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{
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struct lpc10_decoder_state *st;
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st = (struct lpc10_decoder_state *)
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malloc((unsigned) sizeof (struct lpc10_decoder_state));
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if (st != 0) {
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init_lpc10_decoder_state(st);
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}
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return (st);
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}
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void init_lpc10_decoder_state(struct lpc10_decoder_state *st)
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{
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int i;
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lpcini_();
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/* State used by function decode */
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st->iptold = 60;
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st->first = TRUE_;
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st->ivp2h = 0;
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st->iovoic = 0;
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st->iavgp = 60;
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st->erate = 0;
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for (i = 0; i < 30; i++) {
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st->drc[i] = 0;
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}
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for (i = 0; i < 3; i++) {
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st->dpit[i] = 0;
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st->drms[i] = 0;
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}
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/* State used by function synths */
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for (i = 0; i < 360; i++) {
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st->buf[i] = 0.0f;
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}
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st->buflen = 180;
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/* State used by function pitsyn */
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/* ivoico; */ /* no initial value necessary as long as first_pitsyn is initially TRUE_ */
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/* ipito; */ /* no initial value necessary as long as first_pitsyn is initially TRUE_ */
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st->rmso = 1.0f;
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/* rco[10]; */ /* no initial value necessary as long as first_pitsyn is initially TRUE_ */
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/* integer jsamp; */ /* no initial value necessary as long as first_pitsyn is initially TRUE_ */
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st->first_pitsyn = TRUE_;
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/* State used by function bsynz */
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st->ipo = 0;
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for (i = 0; i < 166; i++) {
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st->exc[i] = 0.0f;
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st->exc2[i] = 0.0f;
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}
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st->lpi1 = 0.0f;
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st->lpi2 = 0.0f;
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st->lpi3 = 0.0f;
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st->hpi1 = 0.0f;
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st->hpi2 = 0.0f;
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st->hpi3 = 0.0f;
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st->rmso_bsynz = 0.0f;
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/* State used by function random */
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st->j = 2;
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st->k = 5;
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st->y[0] = (shortint) -21161;
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st->y[1] = (shortint) -8478;
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st->y[2] = (shortint) 30892;
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st->y[3] = (shortint) -10216;
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st->y[4] = (shortint) 16950;
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/* State used by function deemp */
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st->dei1 = 0.0f;
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st->dei2 = 0.0f;
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st->deo1 = 0.0f;
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st->deo2 = 0.0f;
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st->deo3 = 0.0f;
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}
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