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/* 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_ */
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