48 lines
1.8 KiB
C
48 lines
1.8 KiB
C
/***********************************************************************
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**
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** ITU-T G.722.1 (2005-05) - Fixed point implementation for main body and Annex C
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** > Software Release 2.1 (2008-06)
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** (Simple repackaging; no change from 2005-05 Release 2.0 code)
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**
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** © 1999 PictureTel Coporation
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** Andover, MA, USA
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**
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** All rights reserved.
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**
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***********************************************************************/
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/***********************************************************************
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Filename: tables.h
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Purpose: Contains table definitions used by G.722.1 Annex C
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Design Notes:
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***********************************************************************/
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/***********************************************************************
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Include files
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***********************************************************************/
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#define REGION_POWER_TABLE_SIZE 64
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#define NUM_CATEGORIES 8
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#define DCT_LENGTH 320
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#define MAX_DCT_LENGTH 640
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extern Word16 int_region_standard_deviation_table[REGION_POWER_TABLE_SIZE];
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extern Word16 standard_deviation_inverse_table[REGION_POWER_TABLE_SIZE];
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extern Word16 step_size_inverse_table[NUM_CATEGORIES];
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extern Word16 vector_dimension[NUM_CATEGORIES];
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extern Word16 number_of_vectors[NUM_CATEGORIES];
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/* The last category isn't really coded with scalar quantization. */
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extern Word16 max_bin[NUM_CATEGORIES];
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extern Word16 max_bin_plus_one_inverse[NUM_CATEGORIES];
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extern Word16 int_dead_zone[NUM_CATEGORIES];
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extern Word16 samples_to_rmlt_window[DCT_LENGTH];
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extern Word16 rmlt_to_samples_window[DCT_LENGTH];
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/* Add next line in Release 1.2 */
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extern Word16 int_dead_zone_low_bits[NUM_CATEGORIES];
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extern Word16 max_samples_to_rmlt_window[MAX_DCT_LENGTH];
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extern Word16 max_rmlt_to_samples_window[MAX_DCT_LENGTH];
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