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/*
* WMA compatible codec
* Copyright (c) 2002-2007 The FFmpeg Project
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_WMA_H
#define AVCODEC_WMA_H
#include "ffmpeg_get_bits.h"
#include "ffmpeg_put_bits.h"
/* size of blocks */
#define BLOCK_MIN_BITS 7
#define BLOCK_MAX_BITS 11
#define BLOCK_MAX_SIZE (1 << BLOCK_MAX_BITS)
#define BLOCK_NB_SIZES (BLOCK_MAX_BITS - BLOCK_MIN_BITS + 1)
/* XXX: find exact max size */
#define HIGH_BAND_MAX_SIZE 16
#define NB_LSP_COEFS 10
/* XXX: is it a suitable value ? */
#define MAX_CODED_SUPERFRAME_SIZE 16384
#define MAX_CHANNELS 2
#define NOISE_TAB_SIZE 8192
#define LSP_POW_BITS 7
//FIXME should be in wmadec
#define VLCBITS 9
#define VLCMAX ((22+VLCBITS-1)/VLCBITS)
typedef struct CoefVLCTable {
int n; ///< total number of codes
int max_level;
const uint32_t *huffcodes; ///< VLC bit values
const uint8_t *huffbits; ///< VLC bit size
const uint16_t *levels; ///< table to build run/level tables
} CoefVLCTable;
int ff_wma_get_frame_len_bits(int sample_rate, int version,
unsigned int decode_flags);
unsigned int ff_wma_get_large_val(GetBitContext* gb);
int ff_wma_run_level_decode(GetBitContext* gb,
VLC *vlc,
const int32_t *level_table, const uint16_t *run_table,
int version, int32_t *ptr, int offset,
int num_coefs, int block_len, int frame_len_bits,
int coef_nb_bits);
#endif /* AVCODEC_WMA_H */
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