1 files changed, 63 insertions, 0 deletions
diff --git a/gr-vocoder/lib/codec2/codec2_internal.h b/gr-vocoder/lib/codec2/codec2_internal.h
new file mode 100644
index 000000000..3943ac29d
--- /dev/null
+++ b/gr-vocoder/lib/codec2/codec2_internal.h
@@ -0,0 +1,63 @@
+/*---------------------------------------------------------------------------*\
+
+  FILE........: codec2_internal.h
+  AUTHOR......: David Rowe
+  DATE CREATED: 22 March 2011
+
+  Some internal structures and states broken out here as they are useful for
+  testing and development.
+
+\*---------------------------------------------------------------------------*/
+
+/*
+  Copyright (C) 2011 David Rowe
+
+  All rights reserved.
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License version 2.1, as
+  published by the Free Software Foundation.  This program is
+  distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+  License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with this program; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __CODEC2_INTERNAL__
+#define  __CODEC2_INTERNAL__
+
+/*---------------------------------------------------------------------------*\
+                                                       
+                             STATES
+
+\*---------------------------------------------------------------------------*/
+
+typedef struct {
+    float  w[M];	       /* time domain hamming window                */
+    COMP   W[FFT_ENC];	       /* DFT of w[]                                */
+    float  Pn[2*N];	       /* trapezoidal synthesis window              */
+    float  Sn[M];              /* input speech                              */
+    float  hpf_states[2];      /* high pass filter states                   */
+    void  *nlp;                /* pitch predictor states                    */
+    float  Sn_[2*N];	       /* synthesised output speech                 */
+    float  ex_phase;           /* excitation model phase track              */
+    float  bg_est;             /* background noise estimate for post filter */
+    float  prev_Wo;            /* previous frame's pitch estimate           */
+    MODEL  prev_model;         /* previous frame's model parameters         */
+    float  prev_lsps[LPC_ORD]; /* previous frame's LSPs                     */
+    float  prev_energy;        /* previous frame's LPC energy               */
+} CODEC2;
+
+/*---------------------------------------------------------------------------*\
+                                                       
+                             FUNCTION HEADERS
+
+\*---------------------------------------------------------------------------*/
+
+void analyse_one_frame(CODEC2 *c2, MODEL *model, short speech[]);
+void synthesise_one_frame(CODEC2 *c2, short speech[], MODEL *model,float ak[]);
+
+#endif