aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* Common code between Nellymoser encoder and decoder
* Copyright (c) 2007 a840bda5870ba11f19698ff6eb9581dfb0f95fa5,
* 539459aeb7d425140b62a3ec7dbf6dc8e408a306, and
* 520e17cd55896441042b14df2566a6eb610ed444
* Copyright (c) 2007 Loic Minier <lool at dooz.org>
* Benjamin Larsson
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
/**
* @file
* The 3 alphanumeric copyright notices are md5summed they are from the original
* implementors. The original code is available from http://code.google.com/p/nelly2pcm/
*/
#ifndef AVCODEC_NELLYMOSER_H
#define AVCODEC_NELLYMOSER_H
#include "avcodec.h"
#define NELLY_BANDS 23
#define NELLY_BLOCK_LEN 64
#define NELLY_HEADER_BITS 116
#define NELLY_DETAIL_BITS 198
#define NELLY_BUF_LEN 128
#define NELLY_FILL_LEN 124
#define NELLY_BIT_CAP 6
#define NELLY_BASE_OFF 4228
#define NELLY_BASE_SHIFT 19
#define NELLY_SAMPLES (2 * NELLY_BUF_LEN)
extern const float ff_nelly_dequantization_table[127];
extern const uint8_t ff_nelly_band_sizes_table[NELLY_BANDS];
extern const uint16_t ff_nelly_init_table[64];
extern const int16_t ff_nelly_delta_table[32];
void ff_nelly_get_sample_bits(const float *buf, int *bits);
#endif /* AVCODEC_NELLYMOSER_H */
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