/*
  * MPEG-4 Audio common header
  * Copyright (c) 2008 Baptiste Coudurier <baptiste.coudurier@free.fr>
  *
  * 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_MPEG4AUDIO_H
 #define AVCODEC_MPEG4AUDIO_H

 
 #include <stdint.h>

 #include "get_bits.h"
 #include "put_bits.h"

 typedef struct MPEG4AudioConfig {

     int object_type;
     int sampling_index;
     int sample_rate;
     int chan_config;

     int sbr; ///< -1 implicit, 1 presence

     int ext_object_type;
     int ext_sampling_index;
     int ext_sample_rate;

     int ext_chan_config;

     int channels;

     int ps;  ///< -1 implicit, 1 presence

     int frame_length_short;

 } MPEG4AudioConfig;
 

 extern av_export const int avpriv_mpeg4audio_sample_rates[16];

 extern const uint8_t ff_mpeg4audio_channels[8];

 /**

  * Parse MPEG-4 systems extradata from a potentially unaligned GetBitContext to retrieve audio configuration.
  * @param[in] c        MPEG4AudioConfig structure to fill.
  * @param[in] gb       Extradata from container.
  * @param[in] sync_extension look for a sync extension after config if true.
  * @return On error -1 is returned, on success AudioSpecificConfig bit index in extradata.
  */
 int ff_mpeg4audio_get_config_gb(MPEG4AudioConfig *c, GetBitContext *gb,
                                 int sync_extension);
 
 /**
  * Parse MPEG-4 systems extradata from a raw buffer to retrieve audio configuration.

  * @param[in] c        MPEG4AudioConfig structure to fill.
  * @param[in] buf      Extradata from container.

  * @param[in] bit_size Extradata size in bits.
  * @param[in] sync_extension look for a sync extension after config if true.

  * @return On error -1 is returned, on success AudioSpecificConfig bit index in extradata.
  */

 int avpriv_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf,
                                  int bit_size, int sync_extension);

 enum AudioObjectType {
     AOT_NULL,
                                // Support?                Name
     AOT_AAC_MAIN,              ///< Y                       Main
     AOT_AAC_LC,                ///< Y                       Low Complexity
     AOT_AAC_SSR,               ///< N (code in SoC repo)    Scalable Sample Rate

     AOT_AAC_LTP,               ///< Y                       Long Term Prediction

     AOT_SBR,                   ///< Y                       Spectral Band Replication

     AOT_AAC_SCALABLE,          ///< N                       Scalable
     AOT_TWINVQ,                ///< N                       Twin Vector Quantizer
     AOT_CELP,                  ///< N                       Code Excited Linear Prediction
     AOT_HVXC,                  ///< N                       Harmonic Vector eXcitation Coding
     AOT_TTSI             = 12, ///< N                       Text-To-Speech Interface
     AOT_MAINSYNTH,             ///< N                       Main Synthesis
     AOT_WAVESYNTH,             ///< N                       Wavetable Synthesis
     AOT_MIDI,                  ///< N                       General MIDI
     AOT_SAFX,                  ///< N                       Algorithmic Synthesis and Audio Effects
     AOT_ER_AAC_LC,             ///< N                       Error Resilient Low Complexity
     AOT_ER_AAC_LTP       = 19, ///< N                       Error Resilient Long Term Prediction
     AOT_ER_AAC_SCALABLE,       ///< N                       Error Resilient Scalable
     AOT_ER_TWINVQ,             ///< N                       Error Resilient Twin Vector Quantizer
     AOT_ER_BSAC,               ///< N                       Error Resilient Bit-Sliced Arithmetic Coding
     AOT_ER_AAC_LD,             ///< N                       Error Resilient Low Delay
     AOT_ER_CELP,               ///< N                       Error Resilient Code Excited Linear Prediction
     AOT_ER_HVXC,               ///< N                       Error Resilient Harmonic Vector eXcitation Coding
     AOT_ER_HILN,               ///< N                       Error Resilient Harmonic and Individual Lines plus Noise
     AOT_ER_PARAM,              ///< N                       Error Resilient Parametric
     AOT_SSC,                   ///< N                       SinuSoidal Coding

     AOT_PS,                    ///< N                       Parametric Stereo
     AOT_SURROUND,              ///< N                       MPEG Surround

     AOT_ESCAPE,                ///< Y                       Escape Value

     AOT_L1,                    ///< Y                       Layer 1
     AOT_L2,                    ///< Y                       Layer 2
     AOT_L3,                    ///< Y                       Layer 3
     AOT_DST,                   ///< N                       Direct Stream Transfer

     AOT_ALS,                   ///< Y                       Audio LosslesS

     AOT_SLS,                   ///< N                       Scalable LosslesS
     AOT_SLS_NON_CORE,          ///< N                       Scalable LosslesS (non core)

     AOT_ER_AAC_ELD,            ///< N                       Error Resilient Enhanced Low Delay

     AOT_SMR_SIMPLE,            ///< N                       Symbolic Music Representation Simple
     AOT_SMR_MAIN,              ///< N                       Symbolic Music Representation Main

     AOT_USAC_NOSBR,            ///< N                       Unified Speech and Audio Coding (no SBR)
     AOT_SAOC,                  ///< N                       Spatial Audio Object Coding

     AOT_LD_SURROUND,           ///< N                       Low Delay MPEG Surround

     AOT_USAC,                  ///< N                       Unified Speech and Audio Coding

 };
 

 #define MAX_PCE_SIZE 320 ///<Maximum size of a PCE including the 3-bit ID_PCE

                          ///<marker and the comment
 

 int avpriv_copy_pce_data(PutBitContext *pb, GetBitContext *gb);

 #endif /* AVCODEC_MPEG4AUDIO_H */