Halaman utama Jelajahi Bantuan
Daftar Masuk
client_service
/
voice-gateway
2
0
Fork 0
Berkas Masalah 0 Permintaan Tarik 0 Wiki
Cabang: master
Ranting Tag
voice-gateway
/
third_party
/
g7221
/
common
/
tables.h

tables.h 1.8 KB
Permalink Riwayat Mentahan

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647 
  1. /***********************************************************************
    2. 

  2. **
    3. 

  3. **   ITU-T G.722.1 (2005-05) - Fixed point implementation for main body and Annex C
    4. 

  4. **   > Software Release 2.1 (2008-06)
    5. 

  5. **     (Simple repackaging; no change from 2005-05 Release 2.0 code)
    6. 

  6. **
    7. 

  7. **   © 1999 PictureTel Coporation
    8. 

  8. **          Andover, MA, USA  
    9. 

  9. **
    10. 

  10. **	    All rights reserved.
    11. 

  11. **
    12. 

  12. ***********************************************************************/
    13. 

  13. 

  14. /***********************************************************************
    15. 

  15.   Filename:    tables.h    
    16. 

  16. 

  17.   Purpose:     Contains table definitions used by G.722.1 Annex C
    18. 

  18. 		
    19. 

  19.   Design Notes:
    20. 

  20. 

  21. ***********************************************************************/
    22. 

  22. 

  23. /***********************************************************************
    24. 

  24.  Include files                                                           
    25. 

  25. ***********************************************************************/
    26. 

  26. #define REGION_POWER_TABLE_SIZE 64
    27. 

  27. #define NUM_CATEGORIES          8
    28. 

  28. #define DCT_LENGTH              320
    29. 

  29. #define MAX_DCT_LENGTH          640
    30. 

  30. 

  31. extern Word16 int_region_standard_deviation_table[REGION_POWER_TABLE_SIZE];
    32. 

  32. extern Word16 standard_deviation_inverse_table[REGION_POWER_TABLE_SIZE];
    33. 

  33. extern Word16 step_size_inverse_table[NUM_CATEGORIES];
    34. 

  34. extern Word16 vector_dimension[NUM_CATEGORIES];
    35. 

  35. extern Word16 number_of_vectors[NUM_CATEGORIES];
    36. 

  36. /* The last category isn't really coded with scalar quantization. */
    37. 

  37. extern Word16 max_bin[NUM_CATEGORIES];
    38. 

  38. extern Word16 max_bin_plus_one_inverse[NUM_CATEGORIES];
    39. 

  39. extern Word16 int_dead_zone[NUM_CATEGORIES];
    40. 

  40. extern Word16 samples_to_rmlt_window[DCT_LENGTH];
    41. 

  41. extern Word16 rmlt_to_samples_window[DCT_LENGTH];
    42. 

  42. 

  43. /* Add next line in Release 1.2 */
    44. 

  44. extern Word16 int_dead_zone_low_bits[NUM_CATEGORIES];
    45. 

  45. 

  46. extern Word16 max_samples_to_rmlt_window[MAX_DCT_LENGTH];
    47. 

  47. extern Word16 max_rmlt_to_samples_window[MAX_DCT_LENGTH];
    48.