/src/aac/libMpegTPEnc/include/tp_data.h

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/* -----------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android

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Fraunhofer Institute for Integrated Circuits IIS
Attention: Audio and Multimedia Departments - FDK AAC LL
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----------------------------------------------------------------------------- */

/******************* MPEG transport format encoder library *********************

   Author(s):   Manuel Jander

   Description: MPEG Transport data tables

*******************************************************************************/

#ifndef TP_DATA_H
#define TP_DATA_H

#include "machine_type.h"
#include "FDK_audio.h"
#include "FDK_bitstream.h"

/*
 * Configuration
 */

#define TP_USAC_MAX_SPEAKERS (24)

#define TP_USAC_MAX_EXT_ELEMENTS ((24))

#define TP_USAC_MAX_ELEMENTS ((24) + TP_USAC_MAX_EXT_ELEMENTS)

#define TP_USAC_MAX_CONFIG_LEN                                         \
  512 /* next power of two of maximum of escapedValue(hBs, 4, 4, 8) in \
         AudioPreRoll() (285) */

#define TPDEC_USAC_NUM_CONFIG_CHANGE_FRAMES \
  (1) /* Number of frames for config change in USAC */

enum {
  TPDEC_FLUSH_OFF = 0,
  TPDEC_RSV60_CFG_CHANGE_ATSC_FLUSH_ON = 1,
  TPDEC_RSV60_DASH_IPF_ATSC_FLUSH_ON = 2,
  TPDEC_USAC_DASH_IPF_FLUSH_ON = 3
};

enum {
  TPDEC_BUILD_UP_OFF = 0,
  TPDEC_RSV60_BUILD_UP_ON = 1,
  TPDEC_RSV60_BUILD_UP_ON_IN_BAND = 2,
  TPDEC_USAC_BUILD_UP_ON = 3,
  TPDEC_RSV60_BUILD_UP_IDLE = 4,
  TPDEC_RSV60_BUILD_UP_IDLE_IN_BAND = 5
};

/**
 * ProgramConfig struct.
 */
/* ISO/IEC 14496-3 4.4.1.1 Table 4.2 Program config element */
#define PC_FSB_CHANNELS_MAX 16 /* Front/Side/Back channels */
#define PC_LFE_CHANNELS_MAX 4
#define PC_ASSOCDATA_MAX 8
#define PC_CCEL_MAX 16 /* CC elements */
#define PC_COMMENTLENGTH 256
#define PC_NUM_HEIGHT_LAYER 3

typedef struct {
  /* PCE bitstream elements: */
  UCHAR ElementInstanceTag;
  UCHAR Profile;
  UCHAR SamplingFrequencyIndex;
  UCHAR NumFrontChannelElements;
  UCHAR NumSideChannelElements;
  UCHAR NumBackChannelElements;
  UCHAR NumLfeChannelElements;
  UCHAR NumAssocDataElements;
  UCHAR NumValidCcElements;

  UCHAR MonoMixdownPresent;
  UCHAR MonoMixdownElementNumber;

  UCHAR StereoMixdownPresent;
  UCHAR StereoMixdownElementNumber;

  UCHAR MatrixMixdownIndexPresent;
  UCHAR MatrixMixdownIndex;
  UCHAR PseudoSurroundEnable;

  UCHAR FrontElementIsCpe[PC_FSB_CHANNELS_MAX];
  UCHAR FrontElementTagSelect[PC_FSB_CHANNELS_MAX];
  UCHAR FrontElementHeightInfo[PC_FSB_CHANNELS_MAX];

  UCHAR SideElementIsCpe[PC_FSB_CHANNELS_MAX];
  UCHAR SideElementTagSelect[PC_FSB_CHANNELS_MAX];
  UCHAR SideElementHeightInfo[PC_FSB_CHANNELS_MAX];

  UCHAR BackElementIsCpe[PC_FSB_CHANNELS_MAX];
  UCHAR BackElementTagSelect[PC_FSB_CHANNELS_MAX];
  UCHAR BackElementHeightInfo[PC_FSB_CHANNELS_MAX];

  UCHAR LfeElementTagSelect[PC_LFE_CHANNELS_MAX];

  UCHAR AssocDataElementTagSelect[PC_ASSOCDATA_MAX];

  UCHAR CcElementIsIndSw[PC_CCEL_MAX];
  UCHAR ValidCcElementTagSelect[PC_CCEL_MAX];

  UCHAR CommentFieldBytes;
  UCHAR Comment[PC_COMMENTLENGTH];

  /* Helper variables for administration: */
  UCHAR isValid; /*!< Flag showing if PCE has been read successfully. */
  UCHAR
  NumChannels; /*!< Amount of audio channels summing all channel elements
                  including LFEs */
  UCHAR NumEffectiveChannels; /*!< Amount of audio channels summing only SCEs
                                 and CPEs */
  UCHAR elCounter;

} CProgramConfig;

typedef enum {
  ASCEXT_UNKOWN = -1,
  ASCEXT_SBR = 0x2b7,
  ASCEXT_PS = 0x548,
  ASCEXT_MPS = 0x76a,
  ASCEXT_SAOC = 0x7cb,
  ASCEXT_LDMPS = 0x7cc

} TP_ASC_EXTENSION_ID;

/**
 * GaSpecificConfig struct
 */
typedef struct {
  UINT m_frameLengthFlag;
  UINT m_dependsOnCoreCoder;
  UINT m_coreCoderDelay;

  UINT m_extensionFlag;
  UINT m_extensionFlag3;

  UINT m_layer;
  UINT m_numOfSubFrame;
  UINT m_layerLength;

} CSGaSpecificConfig;

typedef enum {
  ELDEXT_TERM = 0x0,         /* Termination tag */
  ELDEXT_SAOC = 0x1,         /* SAOC config */
  ELDEXT_LDSAC = 0x2,        /* LD MPEG Surround config */
  ELDEXT_DOWNSCALEINFO = 0x3 /* ELD sample rate adaptation */
  /* reserved */
} ASC_ELD_EXT_TYPE;

typedef struct {
  UCHAR m_frameLengthFlag;

  UCHAR m_sbrPresentFlag;
  UCHAR
  m_useLdQmfTimeAlign; /* Use LD-MPS QMF in SBR to achive time alignment */
  UCHAR m_sbrSamplingRate;
  UCHAR m_sbrCrcFlag;
  UINT m_downscaledSamplingFrequency;

} CSEldSpecificConfig;

typedef struct {
  USAC_EXT_ELEMENT_TYPE usacExtElementType;
  USHORT usacExtElementConfigLength;
  USHORT usacExtElementDefaultLength;
  UCHAR usacExtElementPayloadFrag;
  UCHAR usacExtElementHasAudioPreRoll;
} CSUsacExtElementConfig;

typedef struct {
  MP4_ELEMENT_ID usacElementType;
  UCHAR m_noiseFilling;
  UCHAR m_harmonicSBR;
  UCHAR m_interTes;
  UCHAR m_pvc;
  UCHAR m_stereoConfigIndex;
  CSUsacExtElementConfig extElement;
} CSUsacElementConfig;

typedef struct {
  UCHAR m_frameLengthFlag;
  UCHAR m_coreSbrFrameLengthIndex;
  UCHAR m_sbrRatioIndex;
  UCHAR m_nUsacChannels; /* number of audio channels signaled in
                            UsacDecoderConfig() / rsv603daDecoderConfig() via
                            numElements and usacElementType */
  UCHAR m_channelConfigurationIndex;
  UINT m_usacNumElements;
  CSUsacElementConfig element[TP_USAC_MAX_ELEMENTS];

  UCHAR numAudioChannels;
  UCHAR m_usacConfigExtensionPresent;
  UCHAR elementLengthPresent;
  UCHAR UsacConfig[TP_USAC_MAX_CONFIG_LEN];
  USHORT UsacConfigBits;
} CSUsacConfig;

/**
 * Audio configuration struct, suitable for encoder and decoder configuration.
 */
typedef struct {
  /* XYZ Specific Data */
  union {
    CSGaSpecificConfig
        m_gaSpecificConfig; /**< General audio specific configuration. */
    CSEldSpecificConfig m_eldSpecificConfig; /**< ELD specific configuration. */
    CSUsacConfig m_usacConfig; /**< USAC specific configuration               */
  } m_sc;

  /* Common ASC parameters */
  CProgramConfig m_progrConfigElement; /**< Program configuration. */

  AUDIO_OBJECT_TYPE m_aot;  /**< Audio Object Type.  */
  UINT m_samplingFrequency; /**< Samplerate. */
  UINT m_samplesPerFrame;   /**< Amount of samples per frame.   */
  UINT m_directMapping; /**< Document this please !!                         */

  AUDIO_OBJECT_TYPE m_extensionAudioObjectType; /**< Audio object type */
  UINT m_extensionSamplingFrequency;            /**< Samplerate            */

  SCHAR m_channelConfiguration; /**< Channel configuration index */

  SCHAR m_epConfig;  /**< Error protection index                           */
  SCHAR m_vcb11Flag; /**< aacSectionDataResilienceFlag                     */
  SCHAR m_rvlcFlag;  /**< aacScalefactorDataResilienceFlag                 */
  SCHAR m_hcrFlag;   /**< aacSpectralDataResilienceFlag                    */

  SCHAR m_sbrPresentFlag; /**< Flag indicating the presence of SBR data in the
                             bitstream               */
  SCHAR
  m_psPresentFlag; /**< Flag indicating the presence of parametric stereo
                      data in the bitstream */
  UCHAR m_samplingFrequencyIndex;          /**< Samplerate index          */
  UCHAR m_extensionSamplingFrequencyIndex; /**< Samplerate index */
  SCHAR m_extensionChannelConfiguration;   /**< Channel configuration index   */

  UCHAR
  configMode; /**< The flag indicates if the callback shall work in memory
                 allocation mode or in config change detection mode */
  UCHAR AacConfigChanged; /**< The flag will be set if at least one aac config
                             parameter has changed that requires a memory
                             reconfiguration, otherwise it will be cleared */
  UCHAR SbrConfigChanged; /**< The flag will be set if at least one sbr config
                             parameter has changed that requires a memory
                             reconfiguration, otherwise it will be cleared */
  UCHAR SacConfigChanged; /**< The flag will be set if at least one sac config
                             parameter has changed that requires a memory
                             reconfiguration, otherwise it will be cleared */

  UCHAR
  config[TP_USAC_MAX_CONFIG_LEN]; /**< Configuration stored as bitstream */
  UINT configBits;                /**< Configuration length in bits */

} CSAudioSpecificConfig;

typedef struct {
  SCHAR flushCnt;      /**< Flush frame counter */
  UCHAR flushStatus;   /**< Flag indicates flush mode: on|off */
  SCHAR buildUpCnt;    /**< Build up frame counter */
  UCHAR buildUpStatus; /**< Flag indicates build up mode: on|off */
  UCHAR cfgChanged; /**< Flag indicates that the config changed and the decoder
                       needs to be initialized again via callback. Make sure
                       that memory is freed before initialization. */
  UCHAR contentChanged; /**< Flag indicates that the content changed i.e. a
                           right truncation occured before */
  UCHAR forceCfgChange; /**< Flag indicates if config change has to be forced
                           even if new config is the same */
} CCtrlCFGChange;

typedef INT (*cbUpdateConfig_t)(void *, const CSAudioSpecificConfig *,
                                const UCHAR configMode, UCHAR *configChanged);
typedef INT (*cbFreeMem_t)(void *, const CSAudioSpecificConfig *);
typedef INT (*cbCtrlCFGChange_t)(void *, const CCtrlCFGChange *);
typedef INT (*cbSsc_t)(void *, HANDLE_FDK_BITSTREAM,
                       const AUDIO_OBJECT_TYPE coreCodec,
                       const INT samplingRate, const INT frameSize,
                       const INT numChannels, const INT stereoConfigIndex,
                       const INT coreSbrFrameLengthIndex, const INT configBytes,
                       const UCHAR configMode, UCHAR *configChanged);

typedef INT (*cbSbr_t)(void *self, HANDLE_FDK_BITSTREAM hBs,
                       const INT sampleRateIn, const INT sampleRateOut,
                       const INT samplesPerFrame,
                       const AUDIO_OBJECT_TYPE coreCodec,
                       const MP4_ELEMENT_ID elementID, const INT elementIndex,
                       const UCHAR harmonicSbr, const UCHAR stereoConfigIndex,
                       const UCHAR configMode, UCHAR *configChanged,
                       const INT downscaleFactor);

typedef INT (*cbUsac_t)(void *self, HANDLE_FDK_BITSTREAM hBs);

typedef INT (*cbUniDrc_t)(void *self, HANDLE_FDK_BITSTREAM hBs,
                          const INT fullPayloadLength, const INT payloadType,
                          const INT subStreamIndex, const INT payloadStart,
                          const AUDIO_OBJECT_TYPE);

typedef struct {
  cbUpdateConfig_t cbUpdateConfig; /*!< Function pointer for Config change
                                      notify callback.  */
  void *cbUpdateConfigData; /*!< User data pointer for Config change notify
                               callback. */
  cbFreeMem_t cbFreeMem;    /*!< Function pointer for free memory callback.  */
  void *cbFreeMemData;      /*!< User data pointer for free memory callback. */
  cbCtrlCFGChange_t cbCtrlCFGChange; /*!< Function pointer for config change
                                        control callback. */
  void *cbCtrlCFGChangeData; /*!< User data pointer for config change control
                                callback. */
  cbSsc_t cbSsc;             /*!< Function pointer for SSC parser callback. */
  void *cbSscData;           /*!< User data pointer for SSC parser callback. */
  cbSbr_t cbSbr;   /*!< Function pointer for SBR header parser callback. */
  void *cbSbrData; /*!< User data pointer for SBR header parser callback. */
  cbUsac_t cbUsac;
  void *cbUsacData;
  cbUniDrc_t cbUniDrc; /*!< Function pointer for uniDrcConfig and
                          loudnessInfoSet parser callback. */
  void *cbUniDrcData;  /*!< User data pointer for uniDrcConfig and
                          loudnessInfoSet parser callback. */
} CSTpCallBacks;

static const UINT SamplingRateTable[] = {
    96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025,
    8000,  7350,  0,     0,     57600, 51200, 40000, 38400, 34150, 28800, 25600,
    20000, 19200, 17075, 14400, 12800, 9600,  0,     0,     0,     0};

static inline int getSamplingRateIndex(UINT samplingRate, UINT nBits) {
  UINT sf_index;
  UINT tableSize = (1 << nBits) - 1;

  for (sf_index = 0; sf_index < tableSize; sf_index++) {
    if (SamplingRateTable[sf_index] == samplingRate) break;
  }

  if (sf_index > tableSize) {
    return tableSize - 1;
  }

  return sf_index;
}

/*
 * Get Channel count from channel configuration
 */
static inline int getNumberOfTotalChannels(int channelConfig) {
  switch (channelConfig) {
    case 1:
    case 2:
    case 3:
    case 4:
    case 5:
    case 6:
      return channelConfig;
    case 7:
    case 12:
    case 14:
      return 8;
    case 11:
      return 7;
    case 13:
      return 24;
    default:
      return 0;
  }
}

static inline int getNumberOfEffectiveChannels(
    const int
        channelConfig) { /* index: 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 */
  const int n[] = {0, 1, 2, 3, 4, 5, 5, 7, 0, 0, 0, 6, 7, 22, 7, 0};
  return n[channelConfig];
}

#endif /* TP_DATA_H */

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Created: 2025-10-28 06:42