1# Global configuration section: lists input and output devices always present on the device 2# as well as the output device selected by default. 3# Devices are designated by a string that corresponds to the enum in audio.h 4 5global_configuration { 6 attached_output_devices AUDIO_DEVICE_OUT_EARPIECE|AUDIO_DEVICE_OUT_SPEAKER 7 default_output_device AUDIO_DEVICE_OUT_SPEAKER 8 attached_input_devices AUDIO_DEVICE_IN_BUILTIN_MIC 9} 10 11# audio hardware module section: contains descriptors for all audio hw modules present on the 12# device. Each hw module node is named after the corresponding hw module library base name. 13# for instance, "primary" corresponds to audio.primary.<device>.so. 14# the "primary" module is mandatory and must include at least one output with 15# AUDIO_OUTPUT_FLAG_PRIMARY flag. 16# Each module descriptor contains one or more output profile descriptors and zero or more 17# input profile descriptors. Each profile lists all the parameters supported by a given output 18# or input stream category. 19# The "channel_masks", "formats", "devices" and "flags" are specified using strings corresponding 20# to enums in audio.h and audio_policy.h. They are concatenated by use of "|" without space or "\n". 21 22audio_hw_modules { 23 primary { 24 outputs { 25 primary { 26 sampling_rates 44100 27 channel_masks AUDIO_CHANNEL_OUT_STEREO 28 formats AUDIO_FORMAT_PCM_16_BIT 29 devices AUDIO_DEVICE_OUT_EARPIECE|AUDIO_DEVICE_OUT_SPEAKER|AUDIO_DEVICE_OUT_WIRED_HEADSET|AUDIO_DEVICE_OUT_WIRED_HEADPHONE|AUDIO_DEVICE_OUT_ALL_SCO|AUDIO_DEVICE_OUT_AUX_DIGITAL|AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET 30 flags AUDIO_OUTPUT_FLAG_PRIMARY 31 } 32 } 33 inputs { 34 primary { 35 sampling_rates 8000|11025|16000|22050|32000|44100|48000 36 channel_masks AUDIO_CHANNEL_IN_MONO|AUDIO_CHANNEL_IN_STEREO 37 formats AUDIO_FORMAT_PCM_16_BIT 38 devices AUDIO_DEVICE_IN_BUILTIN_MIC|AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET|AUDIO_DEVICE_IN_WIRED_HEADSET 39 } 40 } 41 } 42 a2dp { 43 outputs { 44 a2dp { 45 sampling_rates 44100 46 channel_masks AUDIO_CHANNEL_OUT_STEREO 47 formats AUDIO_FORMAT_PCM_16_BIT 48 devices AUDIO_DEVICE_OUT_ALL_A2DP 49 } 50 } 51 } 52} 53