Version 0.1.2 from FTP

git-svn-id: http://svn.digium.com/svn/asterisk/trunk@169 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 163 insertions, 0 deletions

diff --git a/codecs/lpc10/lpcenc.c b/codecs/lpc10/lpcenc.c
new file mode 100755
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+/*
+
+$Log$
+Revision 1.1  2000/01/05 08:20:39  markster
+Version 0.1.2 from FTP
+
+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  20:31:21  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  22:31:44  jaf
+ * Initial revision
+ *
+
+*/
+
+#ifdef P_R_O_T_O_T_Y_P_E_S
+extern int lpcenc_(real *speech, integer *bits);
+extern int initlpcenc_(void);
+/*:ref: prepro_ 14 2 6 4 */
+/*:ref: analys_ 14 5 6 4 4 6 6 */
+/*:ref: encode_ 14 7 4 4 6 6 4 4 4 */
+/*:ref: chanwr_ 14 5 4 4 4 4 4 */
+/*:ref: initprepro_ 14 0 */
+/*:ref: initanalys_ 14 0 */
+#endif
+
+/*  -- translated by f2c (version 19951025).
+   You must link the resulting object file with the libraries:
+	-lf2c -lm   (in that order)
+*/
+
+#include "f2c.h"
+
+/* Table of constant values */
+
+static integer c__180 = 180;
+static integer c__10 = 10;
+
+/* ***************************************************************** */
+
+/* $Log$
+ * Revision 1.1  2000/01/05 08:20:39  markster
+ * Version 0.1.2 from FTP
+ *
+/* 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  20:31:21  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  22:31:44  jaf
+ * Initial revision
+ * */
+/* Revision 1.2  1996/03/28  00:01:22  jaf */
+/* Commented out some trace statements. */
+
+/* Revision 1.1  1996/03/28  00:00:27  jaf */
+/* Initial revision */
+
+
+/* ***************************************************************** */
+
+/* Encode one frame of 180 speech samples to 54 bits. */
+
+/* Input: */
+/*  SPEECH - Speech encoded as real values in the range [-1,+1]. */
+/*           Indices 1 through 180 read, and modified (by PREPRO). */
+/* Output: */
+/*  BITS   - 54 encoded bits, stored 1 per array element. */
+/*           Indices 1 through 54 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 */
+/* INITLPCENC. */
+
+/* Subroutine */ int lpc10_encode(real *speech, integer *bits,
+				  struct lpc10_encoder_state *st)
+{
+    integer irms, voice[2], pitch, ipitv;
+    real rc[10];
+    extern /* Subroutine */ int encode_(integer *, integer *, real *, real *, 
+	    integer *, integer *, integer *), chanwr_(integer *, integer *, 
+	    integer *, integer *, integer *, struct lpc10_encoder_state *),
+            analys_(real *, integer *, 
+	    integer *, real *, real *, struct lpc10_encoder_state *),
+            prepro_(real *, integer *, struct lpc10_encoder_state *);
+    integer irc[10];
+    real rms;
+
+/*       Arguments */
+/* $Log$
+ * Revision 1.1  2000/01/05 08:20:39  markster
+ * Version 0.1.2 from FTP
+ *
+/* 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  20:31:21  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  22:31:44  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 */
+/*       Local variables that need not be saved */
+/*       Uncoded speech parameters */
+/*       Coded speech parameters */
+/*       Local state */
+/*       None */
+    /* Parameter adjustments */
+    if (speech) {
+	--speech;
+	}
+    if (bits) {
+	--bits;
+	}
+
+    /* Function Body */
+    prepro_(&speech[1], &c__180, st);
+    analys_(&speech[1], voice, &pitch, &rms, rc, st);
+    encode_(voice, &pitch, &rms, rc, &ipitv, &irms, irc);
+    chanwr_(&c__10, &ipitv, &irms, irc, &bits[1], st);
+    return 0;
+} /* lpcenc_ */