libavcodec/nellymoser.h

   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 nellymoser.h
  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