| # Copyright 2015 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """This module provides the USB Controller interface.""" |
| |
| |
| class USBController(object): |
| """An abstraction of USB audio gadget driver controller on Chameleon. |
| |
| It provides methods to control the USB gadget driver on Chameleon. |
| |
| A ChameleonConnection object is passed to the construction. |
| |
| """ |
| def __init__(self, chameleon_connection): |
| """Constructs an USBController. |
| |
| @param chameleon_connection: A ChameleonConnection object. |
| |
| """ |
| self._chameleond_proxy = chameleon_connection.chameleond_proxy |
| |
| |
| def set_playback_configs(self, playback_data_format): |
| """Sets the playback configurations for the USB gadget driver. |
| |
| @param playback_data_format: A 4-entry dictionary with following fields: |
| 'file_type', 'sample_format', 'channel' and |
| 'rate'. For e.g., |
| format = { |
| 'file_type': 'raw', |
| 'sample_format': 'S16_LE', |
| 'channel': 2, |
| 'rate': 48000 |
| } |
| |
| """ |
| self._chameleond_proxy.SetUSBDriverPlaybackConfigs(playback_data_format) |
| |
| |
| def set_capture_configs(self, port_id, capture_data_foramt): |
| """Sets the capture configurations for the USB gadget driver. |
| |
| @param capture_data_format: A 4-entry dictionary with following fields: |
| 'file_type', 'sample_format', 'channel' and |
| 'rate'. For e.g., |
| format = { |
| 'file_type': 'raw', |
| 'sample_format': 'S16_LE', |
| 'channel': 2, |
| 'rate': 48000 |
| } |
| |
| """ |
| self._chameleond_proxy.SetUSBDriverCaptureConfigs(capture_data_foramt) |
