ALSA Source

Module Name

module-alsa-source

Module Options

• name: name of the source, to be prefixed
• source_name: name for the source
• source_properties: properties for the source
• namereg_fail: when false attempt to synthesise new source_name if it is already taken
• device: ALSA device
• device_id: ALSA card index
• format: sample format
• rate: sample rate
• alternate_rate: alternate sample rate
• channels: number of channels
• channel_map: channel map
• fragments: number of fragments
• fragment_size: fragment size
• mmap: enable memory mapping?
• tsched: enable system timer based scheduling mode?
• tsched_buffer_size: buffer size when using timer based scheduling
• tsched_buffer_watermark: lower fill watermark
• control: name of mixer control, or name and index separated by a comma
• rewind_safeguard: number of bytes that cannot be rewound
• deferred_volume: Synchronize software and hardware volume changes to avoid momentary jumps?
• deferred_volume_safety_margin: usec adjustment depending on volume direction
• deferred_volume_extra_delay: usec adjustment to HW volume changes
• fixed_latency_range: disable latency range changes on underrun?