Conf alsa

# File: /usr/share/alsa/pcm/dca.conf (from git dcaenc)
defaults.pcm.dca.aes0 0x06
defaults.pcm.dca.aes1 0x82
defaults.pcm.dca.aes2 0x00
defaults.pcm.dca.aes3 0x00
defaults.pcm.dca.iec61937 0

pcm.!dca {
    @args [ CARD DEV AES0 AES1 AES2 AES3 IEC61937 ]

    @args.CARD {
        type string
        default {
            @func getenv
            vars [
                ALSA_IEC958_CARD
                ALSA_PCM_CARD
                ALSA_CARD
            ]
            default {
                @func refer
                name defaults.pcm.iec958.card
            }
        }
    }

    @args.DEV {
        type integer
        default {
            @func igetenv
            vars [
                ALSA_IEC958_DEVICE
            ]
            default {
                @func refer
                name defaults.pcm.iec958.device
            }
        }
    }

    @args.AES0 {
        type integer
        default {
            @func refer
            name defaults.pcm.dca.aes0
        }
    }

    @args.AES1 {
        type integer
        default {
            @func refer
            name defaults.pcm.dca.aes1
        }
    }

    @args.AES2 {
        type integer
        default {
            @func refer
            name defaults.pcm.dca.aes2
        }
    }

    @args.AES3 {
        type integer
        default {
            @func refer
            name defaults.pcm.dca.aes3
        }
    }

    @args.IEC61937 {
        type integer;
	default {
	    @func refer
	    name defaults.pcm.dca.iec61937
	}
    }

    type dca
    slave.pcm {
        @func refer
        name {
            @func concat
            strings [
                "cards."
                {
                    @func card_driver
                    card $CARD
                }
                ".pcm.iec958." $DEV ":"
                "CARD=" $CARD ","
                "AES0=" $AES0 ","
                "AES1=" $AES1 ","
                "AES2=" $AES2 ","
                "AES3=" $AES3
            ]
        }
    }

    iec61937 $IEC61937

    hint {
        show {
            @func refer
            name defaults.namehint.basic
        }
        description "DTS Encoding through IEC958 (S/PDIF)"
        device $DEV
    }
}

pcm.!dcahdmi {
    @args [ CARD DEV AES0 AES1 AES2 AES3 ]

    @args.CARD {
        type string
        default {
            @func getenv
            vars [
                ALSA_IEC958_CARD
                ALSA_PCM_CARD
                ALSA_CARD
            ]
            default {
                @func refer
                name defaults.pcm.iec958.card
            }
        }
    }

    @args.DEV {
        type integer
        default {
            @func igetenv
            vars [
                ALSA_IEC958_DEVICE
            ]
            default {
                @func refer
                name defaults.pcm.iec958.device
            }
        }
    }

    @args.AES0 {
        type integer
        default {
            @func refer
            name defaults.pcm.dca.aes0
        }
    }

    @args.AES1 {
        type integer
        default {
            @func refer
            name defaults.pcm.dca.aes1
        }
    }

    @args.AES2 {
        type integer
        default {
            @func refer
            name defaults.pcm.dca.aes2
        }
    }

    @args.AES3 {
        type integer
        default {
            @func refer
            name defaults.pcm.dca.aes3
        }
    }

    @args.IEC61937 {
        type integer;
	default {
	    @func refer
	    name defaults.pcm.dca.iec61937
	}
    }

    type dca
    slave.pcm {
        @func refer
        name {
            @func concat
            strings [
                "cards."
                {
                    @func card_driver
                    card $CARD
                }
                ".pcm.hdmi." $DEV ":"
                "CARD=" $CARD ","
                "AES0=" $AES0 ","
                "AES1=" $AES1 ","
                "AES2=" $AES2 ","
                "AES3=" $AES3
            ]
        }
    }

    iec61937 $IEC61937

    hint {
        show {
            @func refer
            name defaults.namehint.basic
        }
        description "DTS Encoding through HDMI"
        device $DEV
    }
}










# File: /usr/share/alsa/alsa.conf.d/a52.conf

#
# 5.1 channel AC3 encoder
# Output device: iec958raw:CARD
#
# plug is used to convert to the correct sample format.
# rate is used to convert to the correct bitrate (stutters if done with plug).
# route is required, if not used then audio will not play.
# a52 is used to encode the audio to AC3
#
pcm.a52 {
  @args [ CARD DEV ]

  @args.CARD {
      type string
  }

  @args.DEV {
      type integer
  }

  type plug
  slave {
    pcm {
      type rate
      slave {
        pcm {
          type route
          slave {
            pcm {
              type a52
              rate 48000
              channels 6
              format S16_LE
              bitrate 999 # works for me, default is 640
              slavepcm {
                @func concat strings [ "iec958:CARD=" $CARD ",DEV=" $DEV ]
              }
            }
            channels 6
          }
          ttable {
            0.0 = 1
            1.1 = 1
            2.2 = 1
            3.3 = 1
            4.4 = 1
            5.5 = 1
          }
        }
        rate 48000
      }
      converter samplerate_best
    }
    channels 6
    format S16_LE
    rate "unchanged"
  }
  hint {
    show {
      @func refer
      name defaults.namehint.basic
    }
    description "IEC958 (AC3) Digital Surround 5.1 with all software conversions"
    device $DEV
  }
}







# File: /usr/share/alsa/alsa.conf.d/a52upmix.conf

#
# 2.0 -> 5.1 channel AC3 encoder
# Output device: iec958raw:CARD
#
# plug is used to convert to the correct sample format.
# rate is used to convert to the correct bitrate (stutters if done with plug).
# route is used tp upmix the stereo input to 6 channels.
# a52 is used to encode the audio to AC3
#
pcm.a52upmix {
  @args [ CARD DEV ]

  @args.CARD {
      type string
  }

  @args.DEV {
      type integer
  }

  type plug
  slave {
    pcm {
      type rate
      slave {
        pcm {
          type route
          slave {
            pcm {
              type a52
              rate 48000
              channels 6
              format S16_LE
              bitrate 999 # works for me, default is 640
              slavepcm {
                @func concat strings [ "iec958:CARD=" $CARD ",DEV=" $DEV ]
              }
            }
            channels 6
          }
          ttable {
            0.0 = 1
            0.2 = -0.6
            0.3 = -0.39
            0.4 = 0.5
            0.5 = 0.5
            1.1 = 1
            1.2 = -0.39
            1.3 = -0.6
            1.4 = 0.5
            1.5 = 0.5
          }
        }
        rate 48000
      }
      converter samplerate_best
    }
    channels 2
    format S16_LE
    rate "unchanged"
  }
  hint {
    show {
      @func refer
      name defaults.namehint.basic
    }
    description "IEC958 (AC3) Digital Surround 2.0 -> 5.1 with all software conversions"
    device $DEV
  }
}





# File: /usr/share/alsa/pcm/iec958.conf (Already exist seems same as tuto link)
#
#  Hardware output from iec958
#

pcm.!iec958 {
	@args [ CARD DEV AES0 AES1 AES2 AES3 ]
	@args.CARD {
		type string
		default {
			@func getenv
			vars [
				ALSA_IEC958_CARD
				ALSA_PCM_CARD
				ALSA_CARD
			]
			default {
				@func refer
				name defaults.pcm.iec958.card
			}
		}
	}
	@args.DEV {
		type integer
		default {
			@func igetenv
			vars [
				ALSA_IEC958_DEVICE
			]
			default {
				@func refer
				name defaults.pcm.iec958.device
			}
		}
	}
	@args.AES0 {
		type integer
		# consumer, not-copyright, emphasis-none, mode=0
		default 0x04
	}
	@args.AES1 {
		type integer
		# original, PCM coder
		default 0x82
	}
	@args.AES2 {
		type integer
		# source and channel
		default 0x00
	}
	@args.AES3 {
		type integer
		# fs=48000Hz, clock accuracy=1000ppm
		default 0x02
	}
	type empty
	slave.pcm {
		@func refer
		name {
			@func concat
			strings [
				"cards."
				{
					@func card_driver
					card $CARD
				}
				".pcm.iec958." $DEV ":"
				"CARD=" $CARD ","
				"AES0=" $AES0 ","
				"AES1=" $AES1 ","
				"AES2=" $AES2 ","
				"AES3=" $AES3
			]
		}
	}
	hint {
		show {
			@func refer
			name defaults.namehint.basic
		}
		description "IEC958 (S/PDIF) Digital Audio Output"
		device $DEV
	}
}








# File: /usr/share/alsa/pcm/hdmi.conf (Already exist Hdmi output just for compare)
#
#  Hardware output from HDMI
#

pcm.!hdmi {
	@args [ CARD DEV AES0 AES1 AES2 AES3 ]
	@args.CARD {
		type string
		default {
			@func getenv
			vars [
				ALSA_IEC958_CARD
				ALSA_PCM_CARD
				ALSA_CARD
			]
			default {
				@func refer
				name defaults.pcm.iec958.card
			}
		}
	}
	@args.DEV {
		type integer
		default {
			@func igetenv
			vars [
				ALSA_IEC958_DEVICE
			]
			default {
				@func refer
				name defaults.pcm.iec958.device
			}
		}
	}
	@args.AES0 {
		type integer
		# consumer, not-copyright, emphasis-none, mode=0
		default 0x04
	}
	@args.AES1 {
		type integer
		# original, PCM coder
		default 0x82
	}
	@args.AES2 {
		type integer
		# source and channel
		default 0x00
	}
	@args.AES3 {
		type integer
		# fs=48000Hz, clock accuracy=1000ppm
		default 0x02
	}
	type empty
	slave.pcm {
		@func refer
		name {
			@func concat
			strings [
				"cards."
				{
					@func card_driver
					card $CARD
				}
				".pcm.hdmi." $DEV ":"
				"CARD=" $CARD ","
				"AES0=" $AES0 ","
				"AES1=" $AES1 ","
				"AES2=" $AES2 ","
				"AES3=" $AES3
			]
		}
	}
	hint {
		show {
			@func refer
			name defaults.namehint.basic
		}
		description "HDMI Audio Output"
		device $DEV
	}
}