1/*
2 * Copyright (C) 2008-2009 SVOX AG, Baslerstr. 30, 8048 Zuerich, Switzerland
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16/**
17 * @file picodsp.h
18 *
19 * Include file for DSP related data types and constants in Pico
20 *
21 * Copyright (C) 2008-2009 SVOX AG, Baslerstr. 30, 8048 Zuerich, Switzerland
22 * All rights reserved.
23 *
24 * History:
25 * - 2009-04-20 -- initial version
26 *
27 */
28
29#ifndef PICODSP_H_
30#define PICODSP_H_
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35#if 0
36}
37#endif
38
39/*----------------------------CONSTANTS ----------------------*/
40/*Normalization factors used at the start and at the end of the sig*/
41#define PICODSP_START_FLOAT_NORM      0.41f
42#define PICODSP_ENVSPEC_K1            0.5f
43#define PICODSP_ENVSPEC_K2            2
44#define PICODSP_GETEXC_K1             1024
45#define PICODSP_FIXRESP_NORM          4096.0f
46#define PICODSP_END_FLOAT_NORM        1.5f*16.0f
47#define PICODSP_FIX_SCALE1            0x4000000
48#define PICODSP_FIX_SCALE2            0x4000
49#define PICODSP_SHIFT_FACT1           10
50#define PICODSP_SHIFT_FACT2           16
51#define PICODSP_SHIFT_FACT3           12
52#define PICODSP_SHIFT_FACT4           1
53#define PICODSP_SHIFT_FACT5           18
54#define PICODSP_SHIFT_FACT6           9
55#define PICOSIG_NORM1                 9.14f /100.0f /*normalization factor*/
56#define PICOSIG_MAXAMP                (32767)
57#define PICOSIG_MINAMP                (-32768)
58#define PICODSP_M_PI        3.14159265358979323846
59#define PICODSP_MAX_EX      32
60#define PICODSP_WGT_SHIFT  (0x20000000)
61#define PICODSP_N_RAND_TABLE (760)
62#define PICODSP_COS_TABLE_LEN (512)
63#define PICODSP_COS_TABLE_LEN2 (1024)
64#define PICODSP_COS_TABLE_LEN4 (2048)
65#define PICODSP_PI_SHIFT (4)            /* -log2(PICODSP_COS_TABLE_LEN2/0x4000) */
66
67#define PICODSP_V_CUTOFF_FREQ  4500
68#define PICODSP_UV_CUTOFF_FREQ 300
69#define PICODSP_SAMP_FREQ      16000
70#define PICODSP_FREQ_WARP_FACT 0.42f
71
72/*----------------------------CEP/PHASE CONSTANTS----------------------------*/
73#define PICODSP_CEPORDER    25
74#define PICODSP_PHASEORDER  72
75#define CEPST_BUFF_SIZE     3
76#define PHASE_BUFF_SIZE     5
77/*----------------------------FFT CONSTANTS----------------------------*/
78#define PICODSP_FFTSIZE     (256)
79
80#define PICODSP_H_FFTSIZE   (PICODSP_FFTSIZE/2)
81
82#define PICODSP_DISPLACE    PICODSP_FFTSIZE/4
83
84#define PICODSP_H_FFTSIZE   (PICODSP_FFTSIZE/2)
85#define PICODSP_HFFTSIZE_P1 (PICODSP_H_FFTSIZE+1)
86
87#define FAST_DEVICE(aCount, aAction) \
88{ \
89    int count_ = (aCount); \
90    int times_ = (count_ + 7) >> 3; \
91    switch (count_ & 7){ \
92        case 0: do { aAction; \
93        case 7: aAction; \
94        case 6: aAction; \
95        case 5: aAction; \
96        case 4: aAction; \
97        case 3: aAction; \
98        case 2: aAction; \
99        case 1: aAction; \
100    } while (--times_ > 0); \
101} \
102}
103/*------------------------------------------------------------------------------------------
104 Fast Exp Approximation now remapped to a function in picoos
105 -----------------------------------------------------------------------------------------*/
106#define EXP(y) picoos_quick_exp(y)
107
108#ifdef __cplusplus
109}
110#endif
111
112#endif /*PICODSP_H_*/
113