xbmc/cores/AudioEngine/Utils/AEPackIEC61937.h

   1 /*
   2  *  Copyright (C) 2010-2018 Team Kodi
   3  *  This file is part of Kodi - https://kodi.tv
   4  *
   5  *  SPDX-License-Identifier: GPL-2.0-or-later
   6  *  See LICENSES/README.md for more information.
   7  */
   8
   9 #pragma once
  10
  11 #include <list>
  12 #include <stdint.h>
  13
  14 #define MAX_IEC61937_PACKET  61440
  15 #define IEC61937_DATA_OFFSET 8
  16
  17 #define DTS1_FRAME_SIZE   512
  18 #define DTS2_FRAME_SIZE   1024
  19 #define DTS3_FRAME_SIZE   2048
  20 #define AC3_FRAME_SIZE    1536
  21 #define EAC3_FRAME_SIZE   6144
  22 #define TRUEHD_FRAME_SIZE 15360
  23
  24 #define OUT_SAMPLESIZE 16
  25 #define OUT_CHANNELS 2
  26 #define OUT_FRAMESTOBYTES(a) ((a) * OUT_CHANNELS * (OUT_SAMPLESIZE>>3))
  27
  28 class CAEPackIEC61937
  29 {
  30 public:
  31   CAEPackIEC61937() = default;
  32   typedef int (*PackFunc)(uint8_t *data, unsigned int size, uint8_t *dest);
  33
  34   static int PackAC3     (uint8_t *data, unsigned int size, uint8_t *dest);
  35   static int PackEAC3    (uint8_t *data, unsigned int size, uint8_t *dest);
  36   static int PackDTS_512 (uint8_t *data, unsigned int size, uint8_t *dest, bool littleEndian);
  37   static int PackDTS_1024(uint8_t *data, unsigned int size, uint8_t *dest, bool littleEndian);
  38   static int PackDTS_2048(uint8_t *data, unsigned int size, uint8_t *dest, bool littleEndian);
  39   static int PackTrueHD(const uint8_t* data, unsigned int size, uint8_t* dest);
  40   static int PackDTSHD(uint8_t* data, unsigned int size, uint8_t* dest, unsigned int period);
  41   static int PackPause(uint8_t *dest, unsigned int millis, unsigned int framesize, unsigned int samplerate, unsigned int rep_period, unsigned int encodedRate);
  42 private:
  43
  44   static int PackDTS(uint8_t *data, unsigned int size, uint8_t *dest, bool littleEndian,
  45                      unsigned int frameSize, uint16_t type);
  46
  47   enum IEC61937DataType
  48   {
  49     IEC61937_TYPE_NULL   = 0x00,
  50     IEC61937_TYPE_AC3    = 0x01,
  51     IEC61937_TYPE_DTS1   = 0x0B, /*  512 samples */
  52     IEC61937_TYPE_DTS2   = 0x0C, /* 1024 samples */
  53     IEC61937_TYPE_DTS3   = 0x0D, /* 2048 samples */
  54     IEC61937_TYPE_DTSHD  = 0x11,
  55     IEC61937_TYPE_EAC3   = 0x15,
  56     IEC61937_TYPE_TRUEHD = 0x16
  57   };
  58
  59 #ifdef __GNUC__
  60   struct __attribute__((__packed__)) IEC61937Packet
  61 #else
  62   __pragma(pack(push, 1))
  63   struct IEC61937Packet
  64 #endif
  65   {
  66     uint16_t m_preamble1;
  67     uint16_t m_preamble2;
  68     uint16_t m_type;
  69     uint16_t m_length;
  70     uint8_t  m_data[MAX_IEC61937_PACKET - IEC61937_DATA_OFFSET];
  71   };
  72 #ifndef __GNUC__
  73   __pragma(pack(pop))
  74 #endif
  75 };
  76