audio/audio_policy.conf

#
# Audio policy configuration for generic device builds (goldfish audio HAL - emulator)
#

# Global configuration section: lists input and output devices always present on the device
# as well as the output device selected by default.
# Devices are designated by a string that corresponds to the enum in audio.h

global_configuration {
  attached_output_devices AUDIO_DEVICE_OUT_SPEAKER
  default_output_device AUDIO_DEVICE_OUT_SPEAKER
  attached_input_devices AUDIO_DEVICE_IN_BUILTIN_MIC|AUDIO_DEVICE_IN_REMOTE_SUBMIX
}

# audio hardware module section: contains descriptors for all audio hw modules present on the
# device. Each hw module node is named after the corresponding hw module library base name.
# For instance, "primary" corresponds to audio.primary.<device>.so.
# The "primary" module is mandatory and must include at least one output with
# AUDIO_OUTPUT_FLAG_PRIMARY flag.
# Each module descriptor contains one or more output profile descriptors and zero or more
# input profile descriptors. Each profile lists all the parameters supported by a given output
# or input stream category.
# The "channel_masks", "formats", "devices" and "flags" are specified using strings corresponding
# to enums in audio.h and audio_policy.h. They are concatenated by use of "|" without space or "\n".
#device sr changed from 44100 to 48000 to adapt chip
audio_hw_modules {
  primary {
    outputs {
      primary {
        sampling_rates 48000
        channel_masks AUDIO_CHANNEL_OUT_STEREO
        formats AUDIO_FORMAT_PCM_16_BIT
        devices AUDIO_DEVICE_OUT_SPEAKER|AUDIO_DEVICE_OUT_HDMI
        flags AUDIO_OUTPUT_FLAG_PRIMARY
      }
      hw_av_sync {
        sampling_rates 8000|11025|16000|22050|24000|32000|44100|48000
        channel_masks AUDIO_CHANNEL_OUT_MONO|AUDIO_CHANNEL_OUT_STEREO
        formats AUDIO_FORMAT_PCM_16_BIT
        devices AUDIO_DEVICE_OUT_SPEAKER|AUDIO_DEVICE_OUT_HDMI
        flags AUDIO_OUTPUT_FLAG_DIRECT|AUDIO_OUTPUT_FLAG_HW_AV_SYNC
      }
      hw_compress {
        sampling_rates 8000|11025|16000|22050|24000|32000|44100|48000
        channel_masks AUDIO_CHANNEL_OUT_STEREO|AUDIO_CHANNEL_OUT_MONO|AUDIO_CHANNEL_OUT_5POINT1|AUDIO_CHANNEL_OUT_7POINT1
        formats AUDIO_FORMAT_AC3|AUDIO_FORMAT_E_AC3
        devices AUDIO_DEVICE_OUT_SPEAKER|AUDIO_DEVICE_OUT_HDMI
        flags AUDIO_OUTPUT_FLAG_DIRECT
      }
      hw_av_sync_compress {
        sampling_rates 8000|11025|16000|22050|24000|32000|44100|48000
        channel_masks AUDIO_CHANNEL_OUT_STEREO|AUDIO_CHANNEL_OUT_MONO|AUDIO_CHANNEL_OUT_5POINT1|AUDIO_CHANNEL_OUT_7POINT1
        formats AUDIO_FORMAT_AC3|AUDIO_FORMAT_E_AC3
        devices AUDIO_DEVICE_OUT_SPEAKER|AUDIO_DEVICE_OUT_HDMI
        flags AUDIO_OUTPUT_FLAG_DIRECT|AUDIO_OUTPUT_FLAG_HW_AV_SYNC
      }
    }
    inputs {
      primary {
        sampling_rates 8000|11025|16000|22050|24000|32000|44100|48000
        channel_masks AUDIO_CHANNEL_IN_MONO
        formats AUDIO_FORMAT_PCM_16_BIT
        devices AUDIO_DEVICE_IN_BUILTIN_MIC
      }
    }
  }
  a2dp {
      outputs {
          a2dp {
              sampling_rates 44100|48000
                  channel_masks AUDIO_CHANNEL_OUT_STEREO
                  formats AUDIO_FORMAT_PCM_16_BIT
                  devices AUDIO_DEVICE_OUT_ALL_A2DP
          }
      }
      input {
          a2dp {
              sampling_rates 44100|48000
              channel_masks AUDIO_CHANNEL_IN_STEREO|AUDIO_CHANNEL_IN_MONO
              formats AUDIO_FORMAT_PCM_16_BIT|AUDIO_FORMAT_PCM_8_BIT
              devices AUDIO_DEVICE_IN_BLUETOOTH_A2DP
          }
      }
  }
  usb {
    outputs {
      usb_device {
        sampling_rates dynamic
        channel_masks dynamic
        formats dynamic
        devices AUDIO_DEVICE_OUT_USB_DEVICE
      }
    }
   inputs {
     usb_device {
       sampling_rates dynamic
       channel_masks dynamic
       formats dynamic
       devices AUDIO_DEVICE_IN_USB_DEVICE
     }
   }
  }
 r_submix {
   outputs {
     submix {
       sampling_rates 48000
       channel_masks AUDIO_CHANNEL_OUT_STEREO
       formats AUDIO_FORMAT_PCM_16_BIT
       devices AUDIO_DEVICE_OUT_REMOTE_SUBMIX
     }
    }
   inputs {
    submix {
      sampling_rates 8000|48000
      channel_masks AUDIO_CHANNEL_IN_MONO|AUDIO_CHANNEL_IN_STEREO
      formats AUDIO_FORMAT_PCM_16_BIT
      devices AUDIO_DEVICE_IN_REMOTE_SUBMIX
     }
   }
  }
}