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1220bbcff2
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@10732 d0543943-73ff-0310-b7d9-9358b9ac24b2
145 lines
5.3 KiB
C
145 lines
5.3 KiB
C
/*
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* g722_1 - a library for the G.722.1 and Annex C codecs
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*
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* defs.h
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*
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* Adapted by Steve Underwood <steveu@coppice.org> from the reference
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* code supplied with ITU G.722.1, which is:
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*
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* © 2004 Polycom, Inc.
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* All rights reserved.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Id: defs.h,v 1.16 2008/10/01 15:31:10 steveu Exp $
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*/
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#define MAX(a,b) (a > b ? a : b)
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#define MIN(a,b) (a < b ? a : b)
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#define FRAME_SIZE (MAX_FRAME_SIZE >> 1)
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#define DCT_LENGTH (MAX_DCT_LENGTH >> 1)
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#define NUM_CATEGORIES 8
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#define REGION_POWER_TABLE_SIZE 64
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#define REGION_POWER_TABLE_NUM_NEGATIVES 24
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#define NUM_CATEGORIZATION_CONTROL_BITS 4
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#define NUM_CATEGORIZATION_CONTROL_POSSIBILITIES 16
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#define MAX_NUM_CATEGORIZATION_CONTROL_BITS 5
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#define MAX_NUM_CATEGORIZATION_CONTROL_POSSIBILITIES 32
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/* region_size = (BLOCK_SIZE * 0.875)/NUMBER_OF_REGIONS; */
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#define REGION_SIZE 20
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#define NUMBER_OF_REGIONS 14
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#define MAX_NUMBER_OF_REGIONS 28
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/* This value has been changed for fixed point interop */
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#define ESF_ADJUSTMENT_TO_RMS_INDEX (9-2)
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#define MAX_DCT_LENGTH_LOG 7
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#define DCT_LENGTH_LOG 6
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#define CORE_SIZE 10
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#if defined(G722_1_USE_FIXED_POINT)
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#include "basop32.h"
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#define DCT_LENGTH_DIV_2 160
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#define DCT_LENGTH_DIV_4 80
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#define DCT_LENGTH_DIV_8 40
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#define DCT_LENGTH_DIV_16 20
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#define DCT_LENGTH_DIV_32 10
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#define DCT_LENGTH_DIV_64 5
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void adjust_abs_region_power_index(int16_t *absolute_region_power_index, int16_t *mlt_coefs, int16_t number_of_regions);
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int16_t samples_to_rmlt_coefs(const int16_t new_samples[],
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int16_t history[],
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int16_t coefs[],
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int dct_length);
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void rmlt_coefs_to_samples(int16_t *coefs,
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int16_t *old_samples,
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int16_t *out_samples,
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int dct_length,
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int16_t mag_shift);
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void rmlt_coefs_to_samples(int16_t *coefs,
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int16_t *old_samples,
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int16_t *out_samples,
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int dct_length,
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int16_t mag_shift);
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void categorize(int16_t number_of_available_bits,
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int16_t number_of_regions,
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int16_t num_categorization_control_possibilities,
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int16_t *rms_index,
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int16_t *power_categories,
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int16_t *category_balances);
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int16_t calc_offset(int16_t *rms_index, int16_t number_of_regions, int16_t available_bits);
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void comp_powercat_and_catbalance(int16_t *power_categories,
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int16_t *category_balances,
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int16_t *rms_index,
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int16_t number_of_available_bits,
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int16_t number_of_regions,
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int16_t num_categorization_control_possibilities,
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int16_t offset);
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void dct_type_iv_a(int16_t input[], int16_t output[], int dct_length);
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void dct_type_iv_s(int16_t input[], int16_t output[], int dct_length);
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#else
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#define PI 3.141592653589793238462
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#define ENCODER_SCALE_FACTOR 18318.0f
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#define REGION_SIZE_INVERSE (1.0f/20.0f)
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/* The MLT output is incorrectly scaled by the factor
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product of ENCODER_SCALE_FACTOR and sqrt(160.)
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This is now (9/30/96) 1.0/2^(4.5) or 1/22.627.
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In the current implementation this product
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must be an integer power of sqrt(2). The
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integer power is ESF_ADJUSTMENT_TO_RMS_INDEX.
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The -2 is to conform with the range defined in the spec. */
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/* Scale factor used to match fixed point model results. */
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#define INTEROP_RMLT_SCALE_FACTOR_7 22.0f
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#define INTEROP_RMLT_SCALE_FACTOR_14 33.0f
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void categorize(int number_of_regions,
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int number_of_available_bits,
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int rms_index[MAX_NUMBER_OF_REGIONS],
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int power_categories[MAX_NUMBER_OF_REGIONS],
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int category_balances[MAX_NUM_CATEGORIZATION_CONTROL_POSSIBILITIES - 1]);
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void samples_to_rmlt_coefs(const float new_samples[],
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float old_samples[],
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float coefs[],
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int dct_length);
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void rmlt_coefs_to_samples(float coefs[],
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float old_samples[],
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float out_samples[],
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int dct_length);
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void dct_type_iv(float input[], float output[], int dct_length);
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#endif
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int16_t get_rand(g722_1_rand_t *randobj);
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/*- End of file ------------------------------------------------------------*/
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