xref: /third_party/ffmpeg/libavcodec/eac3enc.h

/*
 * E-AC-3 encoder
 * Copyright (c) 2011 Justin Ruggles <justin.ruggles@gmail.com>
 *
 * 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
 */

/**
 * @file
 * E-AC-3 encoder
 */

#ifndef AVCODEC_EAC3ENC_H
#define AVCODEC_EAC3ENC_H

#include "ac3enc.h"

/**
 * Initialize E-AC-3 exponent tables.
 */
void ff_eac3_exponent_init(void);

/**
 * Determine frame exponent strategy use and indices.
 */
void ff_eac3_get_frame_exp_strategy(AC3EncodeContext *s);

/**
 * Set coupling states.
 * This determines whether certain flags must be written to the bitstream or
 * whether they will be implicitly already known by the decoder.
 */
void ff_eac3_set_cpl_states(AC3EncodeContext *s);

/**
 * Write the E-AC-3 frame header to the output bitstream.
 */
void ff_eac3_output_frame_header(AC3EncodeContext *s);

#endif /* AVCODEC_EAC3ENC_H */