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  1. /*
  2.  * Common code between Nellymoser encoder and decoder
  3.  * Copyright (c) 2007 a840bda5870ba11f19698ff6eb9581dfb0f95fa5,
  4.  *                    539459aeb7d425140b62a3ec7dbf6dc8e408a306, and
  5.  *                    520e17cd55896441042b14df2566a6eb610ed444
  6.  * Copyright (c) 2007 Loic Minier <lool at dooz.org>
  7.  *                    Benjamin Larsson
  8.  *
  9.  * Permission is hereby granted, free of charge, to any person obtaining a
  10.  * copy of this software and associated documentation files (the "Software"),
  11.  * to deal in the Software without restriction, including without limitation
  12.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13.  * and/or sell copies of the Software, and to permit persons to whom the
  14.  * Software is furnished to do so, subject to the following conditions:
  15.  *
  16.  * The above copyright notice and this permission notice shall be included in
  17.  * all copies or substantial portions of the Software.
  18.  *
  19.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  22.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  24.  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  25.  * DEALINGS IN THE SOFTWARE.
  26.  */
  27.  
  28. /**
  29.  * @file
  30.  * The 3 alphanumeric copyright notices are md5summed they are from the original
  31.  * implementors. The original code is available from http://code.google.com/p/nelly2pcm/
  32.  */
  33.  
  34. #ifndef AVCODEC_NELLYMOSER_H
  35. #define AVCODEC_NELLYMOSER_H
  36.  
  37. #include "avcodec.h"
  38.  
  39. #define NELLY_BANDS       23
  40. #define NELLY_BLOCK_LEN   64
  41. #define NELLY_HEADER_BITS 116
  42. #define NELLY_DETAIL_BITS 198
  43. #define NELLY_BUF_LEN     128
  44. #define NELLY_FILL_LEN    124
  45. #define NELLY_BIT_CAP     6
  46. #define NELLY_BASE_OFF    4228
  47. #define NELLY_BASE_SHIFT  19
  48. #define NELLY_SAMPLES     (2 * NELLY_BUF_LEN)
  49.  
  50. extern const float    ff_nelly_dequantization_table[127];
  51. extern const uint8_t  ff_nelly_band_sizes_table[NELLY_BANDS];
  52. extern const uint16_t ff_nelly_init_table[64];
  53. extern const int16_t  ff_nelly_delta_table[32];
  54.  
  55. void ff_nelly_get_sample_bits(const float *buf, int *bits);
  56.  
  57. #endif /* AVCODEC_NELLYMOSER_H */
  58.