ffmpeg/libavcodec/eac3enc.h

   1 /*
   2  * E-AC-3 encoder
   3  * Copyright (c) 2011 Justin Ruggles <justin.ruggles@gmail.com>
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 /**
  23  * @file
  24  * E-AC-3 encoder
  25  */
  26
  27 #ifndef AVCODEC_EAC3ENC_H
  28 #define AVCODEC_EAC3ENC_H
  29
  30 #include "ac3enc.h"
  31
  32 /**
  33  * Initialize E-AC-3 exponent tables.
  34  */
  35 void ff_eac3_exponent_init(void);
  36
  37 /**
  38  * Determine frame exponent strategy use and indices.
  39  */
  40 void ff_eac3_get_frame_exp_strategy(AC3EncodeContext *s);
  41
  42 /**
  43  * Set coupling states.
  44  * This determines whether certain flags must be written to the bitstream or
  45  * whether they will be implicitly already known by the decoder.
  46  */
  47 void ff_eac3_set_cpl_states(AC3EncodeContext *s);
  48
  49 /**
  50  * Write the E-AC-3 frame header to the output bitstream.
  51  */
  52 void ff_eac3_output_frame_header(AC3EncodeContext *s);
  53
  54 #endif /* AVCODEC_EAC3ENC_H */