| /* Copyright (c) 2012 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. |
| */ |
| |
| /* |
| * Keeps a list of playback devices that should be ignored for a card. This is |
| * useful for devices that present non-functional alsa devices. For instance |
| * some mics show a phantom playback device. |
| */ |
| #ifndef CRAS_DEVICE_BLOCKLIST_H_ |
| #define CRAS_DEVICE_BLOCKLIST_H_ |
| |
| #include <stdint.h> |
| |
| #include "cras_types.h" |
| |
| struct cras_device_blocklist; |
| |
| /* Creates a blocklist of devices that should never be added to the system. |
| * Args: |
| * config_path - Path containing the config files. |
| * Returns: |
| * A pointer to the created blocklist on success, NULL on failure. |
| */ |
| struct cras_device_blocklist * |
| cras_device_blocklist_create(const char *config_path); |
| |
| /* Destroys a blocklist returned by cras_device_blocklist_create(). |
| * Args: |
| * blocklist - Blocklist returned by cras_device_blocklist_create() |
| */ |
| void cras_device_blocklist_destroy(struct cras_device_blocklist *blocklist); |
| |
| /* Checks if a playback device on a USB card is blocklisted. |
| * Args: |
| * blocklist - Blocklist returned by cras_device_blocklist_create() |
| * vendor_id - USB vendor ID. |
| * product_id - USB product ID. |
| * device_index - Index of the alsa device in the card. |
| * Returns: |
| * 1 if the device is blocklisted, 0 otherwise. |
| */ |
| int cras_device_blocklist_check(struct cras_device_blocklist *blocklist, |
| unsigned vendor_id, unsigned product_id, |
| unsigned desc_checksum, unsigned device_index); |
| |
| #endif /* CRAS_CARD_DEVICE_BLOCKLIST_H_ */ |
