stripdown of version 0.9

1 files changed, 125 insertions, 0 deletions

diff --git a/defines.h b/defines.h
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+/*---------------------------------------------------------------------------*\
+
+  FILE........: defines.h
+  AUTHOR......: David Rowe
+  DATE CREATED: 23/4/93
+
+  Defines and structures used throughout the codec.
+
+\*---------------------------------------------------------------------------*/
+
+/*
+  Copyright (C) 2009 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 __DEFINES__
+#define __DEFINES__
+
+/*---------------------------------------------------------------------------*\
+
+                                DEFINES
+
+\*---------------------------------------------------------------------------*/
+
+/* General defines */
+
+#define N_S        0.01         /* internal proc frame length in secs   */
+#define TW_S       0.005        /* trapezoidal synth window overlap     */
+#define MAX_AMP    160          /* maximum number of harmonics          */
+#ifndef PI
+#define PI         3.141592654  /* mathematical constant                */
+#endif
+#define TWO_PI     6.283185307  /* mathematical constant                */
+#define MAX_STR    2048         /* maximum string size                  */
+
+#define FFT_ENC    512          /* size of FFT used for encoder         */
+#define FFT_DEC    512          /* size of FFT used in decoder          */
+#define V_THRESH   6.0          /* voicing threshold in dB              */
+#define LPC_ORD    10           /* LPC order                            */
+#define LPC_ORD_LOW 6           /* LPC order for lower rates            */
+
+/* Pitch estimation defines */
+
+#define M_PITCH_S  0.0400       /* pitch analysis window in s           */
+#define P_MIN_S    0.0025       /* minimum pitch period in s            */
+#define P_MAX_S    0.0200       /* maximum pitch period in s            */
+
+/*---------------------------------------------------------------------------*\
+
+                                TYPEDEFS
+
+\*---------------------------------------------------------------------------*/
+
+/* Structure to hold constants calculated at run time based on sample rate */
+
+typedef struct {
+    int   Fs;            /* sample rate of this instance             */
+    int   n_samp;        /* number of samples per 10ms frame at Fs   */
+    int   max_amp;       /* maximum number of harmonics              */
+    int   m_pitch;       /* pitch estimation window size in samples  */
+    int   p_min;         /* minimum pitch period in samples          */
+    int   p_max;         /* maximum pitch period in samples          */
+    float Wo_min;        
+    float Wo_max;  
+    int   nw;            /* analysis window size in samples          */      
+    int   tw;            /* trapezoidal synthesis window overlap     */
+} C2CONST;
+
+/* Structure to hold model parameters for one frame */
+
+typedef struct {
+    float Wo;             /* fundamental frequency estimate in radians  */
+    int   L;              /* number of harmonics                        */
+    float A[MAX_AMP+1];   /* amplitiude of each harmonic                */
+    float phi[MAX_AMP+1]; /* phase of each harmonic                     */
+    int   voiced;         /* non-zero if this frame is voiced           */
+} MODEL;
+
+/* describes each codebook  */
+
+struct lsp_codebook {
+    int                 k;        /* dimension of vector        */
+    int                 log2m;    /* number of bits in m        */
+    int                 m;        /* elements in codebook       */
+#ifdef __EMBEDDED                 /* make sure stored in flash  */
+  const float        *cb;         /* The elements               */
+#else
+  float              *cb;         /* The elements               */
+#endif
+};
+
+extern const struct lsp_codebook lsp_cb[];
+extern const struct lsp_codebook lsp_cbd[];
+extern const struct lsp_codebook lsp_cbvq[];
+extern const struct lsp_codebook lsp_cbjnd[];
+extern const struct lsp_codebook lsp_cbdt[];
+extern const struct lsp_codebook lsp_cbjvm[];
+extern const struct lsp_codebook lsp_cbvqanssi[];
+extern const struct lsp_codebook mel_cb[];
+extern const struct lsp_codebook ge_cb[];
+extern const struct lsp_codebook lspmelvq_cb[];
+extern const struct lsp_codebook newamp1vq_cb[];
+extern const struct lsp_codebook newamp1_energy_cb[];
+extern const struct lsp_codebook newamp2vq_cb[];
+extern const struct lsp_codebook newamp2_energy_cb[];
+
+#ifdef _GNU_SOURCE
+    #define POW10F(x) exp10f((x))
+#else
+    #define POW10F(x) expf(2.302585092994046f*(x))
+#endif
+
+#endif