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/*
** Copyright 2003-2010, VisualOn, Inc.
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
/*--------------------------------------------------------------------------*
* CNST.H *
*--------------------------------------------------------------------------*
* Codec constant parameters (coder and decoder) *
*--------------------------------------------------------------------------*/
#ifndef __CNST_H__
#define __CNST_H__
#define L_FRAME16k 320 /* Frame size at 16kHz */
#define L_FRAME 256 /* Frame size */
#define L_SUBFR16k 80 /* Subframe size at 16kHz */
#define L_SUBFR 64 /* Subframe size */
#define NB_SUBFR 4 /* Number of subframe per frame */
#define L_NEXT 64 /* Overhead in LP analysis */
#define L_WINDOW 384 /* window size in LP analysis */
#define L_TOTAL 384 /* Total size of speech buffer. */
#define M 16 /* Order of LP filter */
#define M16k 20
#define L_FILT16k 15 /* Delay of down-sampling filter */
#define L_FILT 12 /* Delay of up-sampling filter */
#define GP_CLIP 15565 /* Pitch gain clipping = 0.95 Q14 */
#define PIT_SHARP 27853 /* pitch sharpening factor = 0.85 Q15 */
#define PIT_MIN 34 /* Minimum pitch lag with resolution 1/4 */
#define PIT_FR2 128 /* Minimum pitch lag with resolution 1/2 */
#define PIT_FR1_9b 160 /* Minimum pitch lag with resolution 1 */
#define PIT_FR1_8b 92 /* Minimum pitch lag with resolution 1 */
#define PIT_MAX 231 /* Maximum pitch lag */
#define L_INTERPOL (16+1) /* Length of filter for interpolation */
#define OPL_DECIM 2 /* Decimation in open-loop pitch analysis */
#define PREEMPH_FAC 22282 /* preemphasis factor (0.68 in Q15) */
#define GAMMA1 30147 /* Weighting factor (numerator) (0.92 in Q15) */
#define TILT_FAC 22282 /* tilt factor (denominator) (0.68 in Q15) */
#define Q_MAX 8 /* scaling max for signal (see syn_filt_32) */
#define RANDOM_INITSEED 21845 /* own random init value */
#define L_MEANBUF 3
#define ONE_PER_MEANBUF 10923
#define MODE_7k 0
#define MODE_9k 1
#define MODE_12k 2
#define MODE_14k 3
#define MODE_16k 4
#define MODE_18k 5
#define MODE_20k 6
#define MODE_23k 7
#define MODE_24k 8
#define MRDTX 9
#define NUM_OF_MODES 10 /* see bits.h for bits definition */
#define EHF_MASK (Word16)0x0008 /* homing frame pattern */
#endif //__CNST_H__
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