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