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Diffstat (limited to 'trunk/codecs/lpc10/prepro.c')
-rw-r--r-- | trunk/codecs/lpc10/prepro.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/trunk/codecs/lpc10/prepro.c b/trunk/codecs/lpc10/prepro.c new file mode 100644 index 000000000..d24ce0da3 --- /dev/null +++ b/trunk/codecs/lpc10/prepro.c @@ -0,0 +1,116 @@ +/* + +$Log$ +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 20:40:51 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(). + * + * Revision 1.1 1996/08/19 22:30:54 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 prepro_(real *speech, integer *length, + struct lpc10_encoder_state *st); +/*:ref: hp100_ 14 3 6 4 4 */ +/*:ref: inithp100_ 14 0 */ +#endif + +/* Table of constant values */ + +static integer c__1 = 1; + +/* ********************************************************************* */ + +/* PREPRO Version 48 */ + +/* $Log$ + * 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 20:40:51 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(). + * + * Revision 1.1 1996/08/19 22:30:54 jaf + * Initial revision + * */ +/* Revision 1.3 1996/03/14 23:22:56 jaf */ +/* Added comments about when INITPREPRO should be used. */ + +/* Revision 1.2 1996/03/14 23:09:27 jaf */ +/* Added an entry named INITPREPRO that initializes the local state of */ +/* this subroutine, and those it calls (if any). */ + +/* Revision 1.1 1996/02/07 14:48:54 jaf */ +/* Initial revision */ + + +/* ********************************************************************* */ + +/* Pre-process input speech: */ + +/* Inputs: */ +/* LENGTH - Number of SPEECH samples */ +/* Input/Output: */ +/* SPEECH(LENGTH) - Speech data. */ +/* Indices 1 through LENGTH are read and modified. */ + +/* This subroutine has no local state maintained from one call to the */ +/* next, but HP100 does. 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 INITPREPRO. */ + +/* Subroutine */ int prepro_(real *speech, integer *length, + struct lpc10_encoder_state *st) +{ + extern /* Subroutine */ int hp100_(real *, integer *, integer *, struct lpc10_encoder_state *); + +/* Arguments */ +/* High Pass Filter at 100 Hz */ + /* Parameter adjustments */ + if (speech) { + --speech; + } + + /* Function Body */ + hp100_(&speech[1], &c__1, length, st); + return 0; +} /* prepro_ */ |