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/*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Support for the verb/device/modifier core logic and API,
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* command line tool and file parser was kindly sponsored by
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* Texas Instruments Inc.
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* Support for multiple active modifiers and devices,
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* transition sequences, multiple client access and user defined use
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* cases was kindly sponsored by Wolfson Microelectronics PLC.
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*
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* Copyright (C) 2008-2010 SlimLogic Ltd
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* Copyright (C) 2010 Wolfson Microelectronics PLC
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* Copyright (C) 2010 Texas Instruments Inc.
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* Copyright (C) 2010 Red Hat Inc.
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* Authors: Liam Girdwood <lrg@slimlogic.co.uk>
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* Stefan Schmidt <stefan@slimlogic.co.uk>
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* Justin Xu <justinx@slimlogic.co.uk>
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* Jaroslav Kysela <perex@perex.cz>
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*/
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#if 0
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#define UC_MGR_DEBUG
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#endif
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#include "local.h"
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#include <pthread.h>
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#include "use-case.h"
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#define SYNTAX_VERSION_MAX 2
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#define MAX_FILE 256
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#define MAX_CARD_SHORT_NAME 32
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#define MAX_CARD_LONG_NAME 80
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#define SEQUENCE_ELEMENT_TYPE_CDEV 1
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#define SEQUENCE_ELEMENT_TYPE_CSET 2
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#define SEQUENCE_ELEMENT_TYPE_SLEEP 3
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#define SEQUENCE_ELEMENT_TYPE_EXEC 4
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#define SEQUENCE_ELEMENT_TYPE_CSET_BIN_FILE 5
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#define SEQUENCE_ELEMENT_TYPE_CSET_TLV 6
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#define SEQUENCE_ELEMENT_TYPE_CMPT_SEQ 7
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struct ucm_value {
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struct list_head list;
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char *name;
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char *data;
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};
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/* sequence of a component device */
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struct component_sequence {
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struct use_case_device *device; /* component device */
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int enable; /* flag to choose enable or disable list of the device */
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};
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struct sequence_element {
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struct list_head list;
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unsigned int type;
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union {
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long sleep; /* Sleep time in microseconds if sleep element, else 0 */
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char *cdev;
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char *cset;
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char *exec;
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struct component_sequence cmpt_seq; /* component sequence */
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} data;
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};
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/*
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* Transition sequences. i.e. transition between one verb, device, mod to another
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*/
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struct transition_sequence {
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struct list_head list;
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char *name;
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struct list_head transition_list;
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};
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/*
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* Modifier Supported Devices.
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*/
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enum dev_list_type {
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DEVLIST_NONE,
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DEVLIST_SUPPORTED,
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DEVLIST_CONFLICTING
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};
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struct dev_list_node {
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struct list_head list;
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char *name;
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};
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struct dev_list {
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enum dev_list_type type;
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struct list_head list;
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};
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struct ctl_dev {
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struct list_head list;
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char *device;
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};
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struct ctl_list {
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struct list_head list;
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struct list_head dev_list;
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snd_ctl_t *ctl;
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snd_ctl_card_info_t *ctl_info;
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};
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/*
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* Describes a Use Case Modifier and it's enable and disable sequences.
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* A use case verb can have N modifiers.
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*/
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struct use_case_modifier {
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struct list_head list;
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struct list_head active_list;
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char *name;
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char *comment;
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/* modifier enable and disable sequences */
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struct list_head enable_list;
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struct list_head disable_list;
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/* modifier transition list */
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struct list_head transition_list;
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/* list of devices supported or conflicting */
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struct dev_list dev_list;
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/* values */
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struct list_head value_list;
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};
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/*
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* Describes a Use Case Device and it's enable and disable sequences.
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* A use case verb can have N devices.
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*/
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struct use_case_device {
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struct list_head list;
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struct list_head active_list;
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char *name;
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char *comment;
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/* device enable and disable sequences */
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struct list_head enable_list;
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struct list_head disable_list;
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/* device transition list */
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struct list_head transition_list;
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/* list of devices supported or conflicting */
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struct dev_list dev_list;
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/* value list */
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struct list_head value_list;
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};
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/*
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* Describes a Use Case Verb and it's enable and disable sequences.
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* A use case verb can have N devices and N modifiers.
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*/
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struct use_case_verb {
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struct list_head list;
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unsigned int active: 1;
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char *name;
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char *comment;
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/* verb enable and disable sequences */
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struct list_head enable_list;
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struct list_head disable_list;
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/* verb transition list */
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struct list_head transition_list;
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/* hardware devices that can be used with this use case */
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struct list_head device_list;
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/* component device list */
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struct list_head cmpt_device_list;
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/* modifiers that can be used with this use case */
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struct list_head modifier_list;
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/* value list */
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struct list_head value_list;
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};
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/*
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* Manages a sound card and all its use cases.
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*/
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struct snd_use_case_mgr {
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char *card_name;
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char conf_file_name[MAX_CARD_LONG_NAME];
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char *comment;
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int conf_format;
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/* use case verb, devices and modifier configs parsed from files */
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struct list_head verb_list;
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/* default settings - sequence */
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struct list_head default_list;
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/* default settings - value list */
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struct list_head value_list;
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/* current status */
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struct use_case_verb *active_verb;
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struct list_head active_devices;
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struct list_head active_modifiers;
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/* locking */
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pthread_mutex_t mutex;
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/* list of opened control devices */
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struct list_head ctl_list;
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/* Components don't define cdev, the card device. When executing
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* a sequence of a component device, ucm manager enters component
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* domain and needs to provide cdev to the component. This cdev
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* should be defined by the machine, parent of the component.
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*/
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int in_component_domain;
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char *cdev;
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};
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#define uc_error SNDERR
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#ifdef UC_MGR_DEBUG
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#define uc_dbg SNDERR
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#else
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#define uc_dbg(fmt, arg...) do { } while (0)
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#endif
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void uc_mgr_error(const char *fmt, ...);
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void uc_mgr_stdout(const char *fmt, ...);
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int uc_mgr_config_load(int format, const char *file, snd_config_t **cfg);
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int uc_mgr_import_master_config(snd_use_case_mgr_t *uc_mgr);
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int uc_mgr_scan_master_configs(const char **_list[]);
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void uc_mgr_free_sequence_element(struct sequence_element *seq);
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void uc_mgr_free_transition_element(struct transition_sequence *seq);
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void uc_mgr_free_verb(snd_use_case_mgr_t *uc_mgr);
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void uc_mgr_free(snd_use_case_mgr_t *uc_mgr);
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int uc_mgr_open_ctl(snd_use_case_mgr_t *uc_mgr,
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snd_ctl_t **ctl,
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const char *device);
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struct ctl_list *uc_mgr_get_one_ctl(snd_use_case_mgr_t *uc_mgr);
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snd_ctl_t *uc_mgr_get_ctl(snd_use_case_mgr_t *uc_mgr);
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void uc_mgr_free_ctl_list(snd_use_case_mgr_t *uc_mgr);
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int uc_mgr_add_value(struct list_head *base, const char *key, char *val);
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int uc_mgr_get_substituted_value(snd_use_case_mgr_t *uc_mgr,
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char **_rvalue,
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const char *value);
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int uc_mgr_evaluate_condition(snd_use_case_mgr_t *uc_mgr,
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snd_config_t *parent,
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snd_config_t *cond);
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/** The name of the environment variable containing the UCM directory */
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#define ALSA_CONFIG_UCM_VAR "ALSA_CONFIG_UCM"
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/** The name of the environment variable containing the UCM directory (new syntax) */
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#define ALSA_CONFIG_UCM2_VAR "ALSA_CONFIG_UCM2"
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