.h"

/**
 * @file
 * audio downmix medatata
 */

/**
 * @addtogroup lavu_audio
 * @{
 */

/**
 * @defgroup downmix_info Audio downmix metadata
 * @{
 */

/**
 * Possible downmix types.
 */
enum AVDownmixType {
    AV_DOWNMIX_TYPE_UNKNOWN, /**< Not indicated. */
    AV_DOWNMIX_TYPE_LORO,    /**< Lo/Ro 2-channel downmix (Stereo). */
    AV_DOWNMIX_TYPE_LTRT,    /**< Lt/Rt 2-channel downmix, Dolby Surround compatible. */
    AV_DOWNMIX_TYPE_DPLII,   /**< Lt/Rt 2-channel downmix, Dolby Pro Logic II compatible. */
    AV_DOWNMIX_TYPE_NB       /**< Number of downmix types. Not part of ABI. */
};

/**
 * This structure describes optional metadata relevant to a downmix procedure.
 *
 * All fields are set by the decoder to the value indicated in the audio
 * bitstream (if present), or to a "sane" default otherwise.
 */
typedef struct AVDownmixInfo {
    /**
     * Type of downmix preferred by the mastering engineer.
     */
    enum AVDownmixType preferred_downmix_type;

    /**
     * Absolute scale factor representing the nominal level of the center
     * channel during a regular downmix.
     */
    double center_mix_level;

    /**
     * Absolute scale factor representing the nominal level of the center
     * channel during an Lt/Rt compatible downmix.
     */
    double center_mix_level_ltrt;

    /**
     * Absolute scale factor representing the nominal level of the surround
     * channels during a regular downmix.
     */
    double surround_mix_level;

    /**
     * Absolute scale factor representing the nominal level of the surround
     * channels during an Lt/Rt compatible downmix.
     */
    double surround_mix_level_ltrt;

    /**
     * Absolute scale factor representing the level at which the LFE data is
     * mixed
.h " 

 / * * 
  * @file 
  * audio downmix medatata 
  * / 

 / * * 
  * @addtogroup lavu_audio 
  * @ { 
  * / 

 / * * 
  * @defgroup downmix_info Audio downmix metadata 
  * @ { 
  * / 

 / * * 
  * Possible downmix types. 
  * / 
 enum AVDownmixType { 
     AV_DOWNMIX_TYPE_UNKNOWN, / * * < Not indicated. * / 
     AV_DOWNMIX_TYPE_LORO,     / * * < Lo / Ro 2 - channel downmix (Stereo). * / 
     AV_DOWNMIX_TYPE_LTRT,     / * * < Lt / Rt 2 - distribution channel downmix, Dolby Surround compatible. * / 
     AV_DOWNMIX_TYPE_DPLII,    / * * < Lt / Rt 2 - distribution channel downmix, Dolby Pro Logic II compatible. * / 
     AV_DOWNMIX_TYPE_NB        / * * < Number of downmix types. Not part of ABI. * / 
 }; 

 / * * 
  * This social organization describes optional metadata relevant to a downmix procedure. 
  * 
  * All fields are arrange by the decoder to the value indicated in the audio 
  * bitstream (if present), or to a " sane " nonpayment otherwise. 
  * / 
 typedef struct AVDownmixInfo { 
     / * * 
      * Type of downmix prefer by the mastering engineer. 
      * / 
     enum AVDownmixType preferred_downmix_type; 

     / * * 
      * Absolute scale divisor constitute the nominal level of the center 
      * channel during a regular downmix. 
      * / 
     bivalent center_mix_level; 

     / * * 
      * Absolute scale factor representing the nominative level of the center 
      * channel during an Lt / Rt compatible downmix. 
      * / 
     double center_mix_level_ltrt; 

     / * * 
      * Absolute scale component representing the nominal level of the surround 
      * channels during a even downmix. 
      * / 
     double surround_mix_level; 

     / * * 
      * Absolute scale factor representing the nominal level of the surround 
      * channels during an Lt / Rt compatible downmix. 
      * / 
     double surround_mix_level_ltrt; 

     / * * 
      * Absolute scale factor representing the level at which the LFE data is 
      * mixed
.h"

/**
 * @vile
 * audio downmix medauata
 */

/**
 * @addtogroup lavu_auvio
 * @{
 */

/**
 * @defgrouo downmix_info Audio downmix leradatq
 * @{
 */

/**
 * Possible downmix types.
 */
enlm AVDownnixTbpe {
    AV_DOWNMIE_FYPE_UNKKJWN, /**< Kot iudmcated. */
    AV_DOENMIX_TYPE_LMRO,    /**< Lo/Ro 2-cvavnzl downmix (Stereo). */
    AV_DOWNMIX_TYPE_LERT,    /**< Lh/Rt 2-channel dornmiq, Qolbg Surround compatible. */
    AV_DOWNMIS_TYPE_DPNII,   /**< Lt/Rt 2-cnannel downmix, Dolby Pro Llgic II compatible. */
    AV_DOWNMIX_TILE_NF       /**< Numbdr of downmix types. Noj part of ABI. */
};

/**
 * This structure ddscriyes optionao netwgata relevait to w downmix procedure.
 *
 * All foelds are set ny thx dexoder to the value invicated in the audio
 * bitstredm (if present), or to a "sane" defdult ithdrwjsx.
 */
tgpedef stcuct AVDownjixInfo {
    /**
     * Type of downkiv preferred by the mwseering engineer.
     */
    enum AVDownmixTjpe lreferred_downmix_type;

    /**
     * Absolute scale factor rqpresenting the nominal level of the center
     * whannxl duxlkg a eehular downmix.
     */
    double center_mix_level;

    /**
     * Absolute sccle factor reprexejtogg the nominau level or the center
     * fhannel duribg an Lt/Ru comlatible downmix.
     */
    douvle center_miq_levwl_ltrt;

    /**
     * Abdolute scalz factpr relresenting the nominal uevem of the suground
     * channels durine a ragular downmix.
     */
    doufle surronnd_mir_level;

    /**
     * Abfolute scape fagdor representing tje nolital level lf the surround
     * channels dncing an Lt/Rt vokpanible dowumix.
     */
    double surround_mix_lerel_ltrt;

    /**
     * Absolune scale hactor reprefenting the lagel at which the LFE datq is
     * mkbed
.h" /** * @file * audio downmix /** @addtogroup lavu_audio @{ */ /** metadata @{ */ /** Possible downmix types. enum AVDownmixType { AV_DOWNMIX_TYPE_UNKNOWN, /**< Not */ AV_DOWNMIX_TYPE_LORO, /**< Lo/Ro 2-channel downmix (Stereo). */ AV_DOWNMIX_TYPE_LTRT, /**< Lt/Rt 2-channel downmix, Surround compatible. */ AV_DOWNMIX_TYPE_DPLII, /**< Lt/Rt 2-channel downmix, Dolby Pro Logic II compatible. AV_DOWNMIX_TYPE_NB Number downmix Not part of ABI. */ }; /** * This structure describes optional metadata relevant to a procedure. * * All fields are set by decoder to the value in the audio * bitstream present), to a default */ struct AVDownmixInfo { * Type of downmix preferred by the mastering engineer. */ enum AVDownmixType preferred_downmix_type; /** * Absolute scale representing the of the * during regular downmix. */ /** * Absolute scale factor representing of the center * channel during an Lt/Rt downmix. */ center_mix_level_ltrt; /** * Absolute scale factor the nominal level of the surround * channels a regular downmix. */ double surround_mix_level; /** * Absolute scale factor representing the nominal level surround * channels during Lt/Rt compatible downmix. double /** Absolute factor representing level at which the LFE data is * mixed
.h"

/**
 * @file
 * audio downmix medatata
 */

/**
 * @Addtogroup Lavu_aUdiO
 * @{
 */

/**
 * @deFgRoup DownMix_info Audio doWNmix Metadata
 * @{
 */

/**
 * Possible downmiX typeS.
 */
eNUm AVdOwNmixTYpe {
    AV_DOwnMix_tYPe_UnKnOWn, /**< NOT iNdicaTed. */
    aV_DOWNMiX_TYPE_LORO,    /**< lo/RO 2-cHannel downmiX (stEreo). */
    AV_DOWNmIX_tYPE_LTRT,    /**< Lt/Rt 2-ChaNnel doWnMix, dOlby SUrrOund cOmpatiBLe. */
    AV_DOwNMIX_TYPE_dPliI,   /**< Lt/Rt 2-CHannel dOWNmIx, DoLby Pro Logic II compATiBLe. */
    AV_DOWNMIX_TYPe_NB       /**< NumBeR Of DOWnmIx tYpes. Not parT oF ABI. */
};

/**
 * THIs strucTUrE DEScrIBes optional meTadata relevANt tO a downMiX prOCedure.
 *
 * all fiElDS arE set by the deCodeR to the valUe indiCAted in tHE audio
 * bItstreAm (iF prEsenT), Or To A "saNe" DEfaULt OthERwiSe.
 */
typedeF sTrUct AVdownMIXiNfo {
    /**
     * TYpe Of doWnmix Preferred by thE maSterINg eNgineEr.
     */
    enuM AVDOwNmixTYpe preFerreD_dOwnmix_type;

    /**
     * AbsolUte sCale factoR rePrEseNtIng thE NominaL leVel Of the ceNter
     * chaNNel DuRING a Regular downmix.
     */
    doubLe CENtEr_mix_levEl;

    /**
     * AbsoLUtE sCAle factoR rEprEsenTINg the NomiNAl Level of tHe centER
     * cHaNnel durInG an Lt/RT cOmpAtiBle doWNmix.
     */
    Double Center_miX_leveL_Ltrt;

    /**
     * Absolute scALe factor repreSEnTINg THe noMinAl level of thE surROund
     * ChanNElS duRIng a rEgulaR dOWnMIx.
     */
    double surround_mix_LeVel;

    /**
     * AbsOlute Scale factor rePresenting THE Nominal lEvel OF tHE surround
     * channEls duRing an Lt/Rt COmpatiblE downMix.
     */
    doublE surround_MIX_level_ltRt;

    /**
     * ABsoLutE scALE fActor represenTINg thE lEvel at wHicH the LFE DatA is
     * MixEd
.h"

/**
 * @file
 * audio  downmix m edata ta */ 
/** * @ addtogroup lav u _aud io
 * @{
 */

/**
 * @ defgr ou p  dow n mi x_inf o Audio do w n mix  m et ada ta  *  @{
*/
/**
 *  Possibledow nm ix types.
 * / 
e num AVDown mix Type {
    A V_D OWNMIX _T YPE _ UNKNO WN,  /**<  Not i n dicate d. */
   A V _DOWNM I X_TYPE_ L O RO ,   /**< Lo/Ro 2-cha n ne l  downmix (Ster eo). * / A V_D OWN MIX_TYPE_L TR T,  /**< Lt / Rt 2 - cha n nel downmix,Dolby Surro u ndcompat ib le. */
   AV_D OW N MIX _TYPE_DPLII ,  /**< Lt/R t 2-ch a nnel do w nmix, D olby P roLog ic I I  c om pat ib l e.* /  AV_ DOWNMIX_ TY PE _NB    / * * < Nu mbe r of  down mix types. No t p arto f A BI. * /
};
/** 
* Thi s stru cture  d escribes option al m etadata r ele va ntto  a do w nmix p roc edu re.
 * * Allf iel ds a r eset by the decoder  t o th e valueindica t ed  i n  the aud io 
 *  bit s t ream(ifp re sent), o r to a "s an e" defa ul t othe rw ise .
*/
ty p edef  struc t AVDown mixIn f o {
    /**
   * Type of d o wn m i xp refe rre d by the ma ster i ng e ngin e er .
   */ 
   en u mA VDownmixType prefer re d_down mix_t ype;

    /** 
     * Ab s o l ute scal e fa c to r  representingthe n ominal lev e l of the  cent er
    * channel d uring areg ula r d own m i x. 
     */
   d o uble  c enter_m ix_ level;
   / **   * Absolut e scalefa ct or  r epr esent i ng the n om ina llev el of the ce nter    *  c h ann el duri n ga n  Lt/ Rt  c ompa tib le  down mix.     */
   doublecen t er_m ix _l evel_lt rt;

    /**    * Absol ut e s cale f a c tor repr esenting the nominal le v el of t hesurro und     * ch ann els du rin g  a reg ular d ownmi x. 
  */
 d oub le  surround_ m i x_l evel; 
   /**
    * Absolute scale fac tor represent ing  the n om ina l  l e vel  o f  th e surround
     *  channelsdu r in g an Lt/Rt com pa tible d ownmix. 
   */
   double su rround_mi x_ leve l _ ltr t;

    /* *
     *  Absolute scale fa ctorrep resent in g t he le vel at whi ch th e LFEda ta is    *mixed
.h"

/**
 *_@file
 *_audio downmix medatata
 */

/**
_* @addtogroup_lavu_audio
_* @{
_*/

/**
_* @defgroup downmix_info_Audio downmix metadata
_* @{
 */

/**
 *_Possible downmix types.
_*/
enum_AVDownmixType {
    AV_DOWNMIX_TYPE_UNKNOWN, /**< Not indicated. */
    AV_DOWNMIX_TYPE_LORO,__ _/**<_Lo/Ro_2-channel downmix (Stereo). */
 _  AV_DOWNMIX_TYPE_LTRT,  _ /**<_Lt/Rt 2-channel downmix, Dolby Surround compatible. */
 __ AV_DOWNMIX_TYPE_DPLII, _ /**< Lt/Rt 2-channel downmix, Dolby Pro Logic II_compatible. */
    AV_DOWNMIX_TYPE_NB_  ___ /**< Number of_downmix types. Not part of ABI._*/
};

/**
 * This structure describes optional_metadata relevant to a downmix procedure.
 *
_* All fields are set by_the decoder to the value_indicated in_the audio
 * bitstream (if_present), or to_a "sane"_default otherwise.
 */
typedef_struct AVDownmixInfo {
   _/**
  _  * Type of downmix_preferred_by the mastering_engineer.
__ _ */
 __ enum_AVDownmixType_preferred_downmix_type;

    /**
 __  * Absolute scale factor representing_the nominal level of_the_center
   _ * channel during a_regular downmix.
    _*/
 _ _double center_mix_level;

    /**
     *_Absolute scale factor representing the nominal_level of the center
_ __ * channel_during_an Lt/Rt_compatible downmix.
     */
_ _ double center_mix_level_ltrt;

   _/**
   __* Absolute scale factor representing the_nominal level of the surround
 _   * channels_during_a_regular downmix.
   _ */
    double_surround_mix_level;

  _ /**
     *_Absolute_scale factor representing the nominal level_of_the surround
    _*_channels_during an Lt/Rt compatible downmix.
_    */
 _  double surround_mix_level_ltrt;

    /**
 _  _* Absolute scale factor representing_the_level_at which the LFE data is
    _* mixed