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+/*
+
+$Log$
+Revision 1.15 2004/06/26 03:50:14 markster
+Merge source cleanups (bug #1911)
+
+Revision 1.14 2003/02/12 13:59:15 matteo
+mer feb 12 14:56:57 CET 2003
+
+Revision 1.1.1.1 2003/02/12 13:59:15 matteo
+mer feb 12 14:56:57 CET 2003
+
+Revision 1.2 2000/01/05 08:20:39 markster
+Some OSS fixes and a few lpc changes to make it actually work
+
+ * Revision 1.2 1996/08/20 20:30:11 jaf
+ * Removed all static local variables that were SAVE'd in the Fortran
+ * code, and put them in struct lpc10_encoder_state that is passed as an
+ * argument.
+ *
+ * Removed init function, since all initialization is now done in
+ * init_lpc10_encoder_state().
+ *
+ * Changed name of function from lpcenc_ to lpc10_encode, simply to make
+ * all lpc10 functions have more consistent naming with each other.
+ *
+ * Revision 1.1 1996/08/19 22:31:48 jaf
+ * Initial revision
+ *
+
+*/
+
+/* -- translated by f2c (version 19951025).
+ You must link the resulting object file with the libraries:
+ -lf2c -lm (in that order)
+*/
+
+#include "f2c.h"
+
+#ifdef P_R_O_T_O_T_Y_P_E_S
+extern int lpcdec_(integer *bits, real *speech);
+extern int initlpcdec_(void);
+/* comlen contrl_ 12 */
+/*:ref: chanrd_ 14 5 4 4 4 4 4 */
+/*:ref: decode_ 14 7 4 4 4 4 4 6 6 */
+/*:ref: synths_ 14 6 4 4 6 6 6 4 */
+/*:ref: initdecode_ 14 0 */
+/*:ref: initsynths_ 14 0 */
+#endif
+
+/* Common Block Declarations */
+
+extern struct {
+ integer order, lframe;
+ logical corrp;
+} contrl_;
+
+#define contrl_1 contrl_
+
+/* Table of constant values */
+
+static integer c__10 = 10;
+
+/* ***************************************************************** */
+
+/* $Log$
+ * Revision 1.15 2004/06/26 03:50:14 markster
+ * Merge source cleanups (bug #1911)
+ *
+ * Revision 1.14 2003/02/12 13:59:15 matteo
+ * mer feb 12 14:56:57 CET 2003
+ *
+ * Revision 1.1.1.1 2003/02/12 13:59:15 matteo
+ * mer feb 12 14:56:57 CET 2003
+ *
+ * Revision 1.2 2000/01/05 08:20:39 markster
+ * Some OSS fixes and a few lpc changes to make it actually work
+ *
+ * Revision 1.2 1996/08/20 20:30:11 jaf
+ * Removed all static local variables that were SAVE'd in the Fortran
+ * code, and put them in struct lpc10_encoder_state that is passed as an
+ * argument.
+ *
+ * Removed init function, since all initialization is now done in
+ * init_lpc10_encoder_state().
+ *
+ * Changed name of function from lpcenc_ to lpc10_encode, simply to make
+ * all lpc10 functions have more consistent naming with each other.
+ *
+ * Revision 1.1 1996/08/19 22:31:48 jaf
+ * Initial revision
+ * */
+/* Revision 1.1 1996/03/28 00:03:00 jaf */
+/* Initial revision */
+
+
+/* ***************************************************************** */
+
+/* Decode 54 bits to one frame of 180 speech samples. */
+
+/* Input: */
+/* BITS - 54 encoded bits, stored 1 per array element. */
+/* Indices 1 through 53 read (SYNC bit ignored). */
+/* Output: */
+/* SPEECH - Speech encoded as real values in the range [-1,+1]. */
+/* Indices 1 through 180 written. */
+
+/* This subroutine maintains local state from one call to the next. If */
+/* you want to switch to using a new audio stream for this filter, or */
+/* reinitialize its state for any other reason, call the ENTRY */
+/* INITLPCDEC. */
+
+/* Subroutine */ int lpc10_decode(integer *bits, real *speech,
+ struct lpc10_decoder_state *st)
+{
+ integer irms, voice[2], pitch, ipitv;
+ extern /* Subroutine */ int decode_(integer *, integer *, integer *,
+ integer *, integer *, real *, real *, struct lpc10_decoder_state *);
+ real rc[10];
+ extern /* Subroutine */ int chanrd_(integer *, integer *, integer *,
+ integer *, integer *), synths_(integer *,
+ integer *, real *, real *, real *, integer *,
+ struct lpc10_decoder_state *);
+ integer irc[10], len;
+ real rms;
+
+/* $Log$
+ * Revision 1.15 2004/06/26 03:50:14 markster
+ * Merge source cleanups (bug #1911)
+ *
+ * Revision 1.14 2003/02/12 13:59:15 matteo
+ * mer feb 12 14:56:57 CET 2003
+ *
+ * Revision 1.1.1.1 2003/02/12 13:59:15 matteo
+ * mer feb 12 14:56:57 CET 2003
+ *
+ * Revision 1.2 2000/01/05 08:20:39 markster
+ * Some OSS fixes and a few lpc changes to make it actually work
+ *
+ * Revision 1.2 1996/08/20 20:30:11 jaf
+ * Removed all static local variables that were SAVE'd in the Fortran
+ * code, and put them in struct lpc10_encoder_state that is passed as an
+ * argument.
+ *
+ * Removed init function, since all initialization is now done in
+ * init_lpc10_encoder_state().
+ *
+ * Changed name of function from lpcenc_ to lpc10_encode, simply to make
+ * all lpc10 functions have more consistent naming with each other.
+ *
+ * Revision 1.1 1996/08/19 22:31:48 jaf
+ * Initial revision
+ * */
+/* Revision 1.3 1996/03/29 22:03:47 jaf */
+/* Removed definitions for any constants that were no longer used. */
+
+/* Revision 1.2 1996/03/26 19:34:33 jaf */
+/* Added comments indicating which constants are not needed in an */
+/* application that uses the LPC-10 coder. */
+
+/* Revision 1.1 1996/02/07 14:43:51 jaf */
+/* Initial revision */
+
+/* LPC Configuration parameters: */
+/* Frame size, Prediction order, Pitch period */
+/* Arguments */
+/* $Log$
+ * Revision 1.15 2004/06/26 03:50:14 markster
+ * Merge source cleanups (bug #1911)
+ *
+ * Revision 1.14 2003/02/12 13:59:15 matteo
+ * mer feb 12 14:56:57 CET 2003
+ *
+ * Revision 1.1.1.1 2003/02/12 13:59:15 matteo
+ * mer feb 12 14:56:57 CET 2003
+ *
+ * Revision 1.2 2000/01/05 08:20:39 markster
+ * Some OSS fixes and a few lpc changes to make it actually work
+ *
+ * Revision 1.2 1996/08/20 20:30:11 jaf
+ * Removed all static local variables that were SAVE'd in the Fortran
+ * code, and put them in struct lpc10_encoder_state that is passed as an
+ * argument.
+ *
+ * Removed init function, since all initialization is now done in
+ * init_lpc10_encoder_state().
+ *
+ * Changed name of function from lpcenc_ to lpc10_encode, simply to make
+ * all lpc10 functions have more consistent naming with each other.
+ *
+ * Revision 1.1 1996/08/19 22:31:48 jaf
+ * Initial revision
+ * */
+/* Revision 1.3 1996/03/29 22:05:55 jaf */
+/* Commented out the common block variables that are not needed by the */
+/* embedded version. */
+
+/* Revision 1.2 1996/03/26 19:34:50 jaf */
+/* Added comments indicating which constants are not needed in an */
+/* application that uses the LPC-10 coder. */
+
+/* Revision 1.1 1996/02/07 14:44:09 jaf */
+/* Initial revision */
+
+/* LPC Processing control variables: */
+
+/* *** Read-only: initialized in setup */
+
+/* Files for Speech, Parameter, and Bitstream Input & Output, */
+/* and message and debug outputs. */
+
+/* Here are the only files which use these variables: */
+
+/* lpcsim.f setup.f trans.f error.f vqsetup.f */
+
+/* Many files which use fdebug are not listed, since it is only used in */
+/* those other files conditionally, to print trace statements. */
+/* integer fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
+/* LPC order, Frame size, Quantization rate, Bits per frame, */
+/* Error correction */
+/* Subroutine SETUP is the only place where order is assigned a value, */
+/* and that value is 10. It could increase efficiency 1% or so to */
+/* declare order as a constant (i.e., a Fortran PARAMETER) instead of as
+*/
+/* a variable in a COMMON block, since it is used in many places in the */
+/* core of the coding and decoding routines. Actually, I take that back.
+*/
+/* At least when compiling with f2c, the upper bound of DO loops is */
+/* stored in a local variable before the DO loop begins, and then that is
+*/
+/* compared against on each iteration. */
+/* Similarly for lframe, which is given a value of MAXFRM in SETUP. */
+/* Similarly for quant, which is given a value of 2400 in SETUP. quant */
+/* is used in only a few places, and never in the core coding and */
+/* decoding routines, so it could be eliminated entirely. */
+/* nbits is similar to quant, and is given a value of 54 in SETUP. */
+/* corrp is given a value of .TRUE. in SETUP, and is only used in the */
+/* subroutines ENCODE and DECODE. It doesn't affect the speed of the */
+/* coder significantly whether it is .TRUE. or .FALSE., or whether it is
+*/
+/* a constant or a variable, since it is only examined once per frame. */
+/* Leaving it as a variable that is set to .TRUE. seems like a good */
+/* idea, since it does enable some error-correction capability for */
+/* unvoiced frames, with no change in the coding rate, and no noticeable
+*/
+/* quality difference in the decoded speech. */
+/* integer quant, nbits */
+/* *** Read/write: variables for debugging, not needed for LPC algorithm
+*/
+
+/* Current frame, Unstable frames, Output clip count, Max onset buffer,
+*/
+/* Debug listing detail level, Line count on listing page */
+
+/* nframe is not needed for an embedded LPC10 at all. */
+/* nunsfm is initialized to 0 in SETUP, and incremented in subroutine */
+/* ERROR, which is only called from RCCHK. When LPC10 is embedded into */
+/* an application, I would recommend removing the call to ERROR in RCCHK,
+*/
+/* and remove ERROR and nunsfm completely. */
+/* iclip is initialized to 0 in SETUP, and incremented in entry SWRITE in
+*/
+/* sread.f. When LPC10 is embedded into an application, one might want */
+/* to cause it to be incremented in a routine that takes the output of */
+/* SYNTHS and sends it to an audio device. It could be optionally */
+/* displayed, for those that might want to know what it is. */
+/* maxosp is never initialized to 0 in SETUP, although it probably should
+*/
+/* be, and it is updated in subroutine ANALYS. I doubt that its value */
+/* would be of much interest to an application in which LPC10 is */
+/* embedded. */
+/* listl and lincnt are not needed for an embedded LPC10 at all. */
+/* integer nframe, nunsfm, iclip, maxosp, listl, lincnt */
+/* common /contrl/ fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
+/* common /contrl/ quant, nbits */
+/* common /contrl/ nframe, nunsfm, iclip, maxosp, listl, lincnt */
+/* Local variables that need not be saved */
+/* Uncoded speech parameters */
+/* Coded speech parameters */
+/* Others */
+/* Local state */
+/* None */
+ /* Parameter adjustments */
+ if (bits) {
+ --bits;
+ }
+ if (speech) {
+ --speech;
+ }
+
+ /* Function Body */
+
+ chanrd_(&c__10, &ipitv, &irms, irc, &bits[1]);
+ decode_(&ipitv, &irms, irc, voice, &pitch, &rms, rc, st);
+ synths_(voice, &pitch, &rms, rc, &speech[1], &len, st);
+ return 0;
+} /* lpcdec_ */