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/*
* media-key
* Copyright (c) 2011 Samsung Electronics Co., Ltd All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the License);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __TIZEN_SYSTEM_MEDIA_KEY_H__
#define __TIZEN_SYSTEM_MEDIA_KEY_H__
#include <tizen.h>
#ifdef __cplusplus
extern "C"
{
#endif
/**
* @addtogroup CAPI_SYSTEM_MEDIA_KEY_MODULE
* @{
*/
/**
* @brief Enumeration of error code for media key
*/
typedef enum
{
MEDIA_KEY_ERROR_NONE = TIZEN_ERROR_NONE, /**< Successful */
MEDIA_KEY_ERROR_INVALID_PARAMETER = TIZEN_ERROR_INVALID_PARAMETER, /**< Invalid parameter */
} media_key_error_e;
/**
* @brief Enumeration of media key
*/
typedef enum
{
MEDIA_KEY_PLAY, /**< */
MEDIA_KEY_STOP, /**< */
MEDIA_KEY_PAUSE, /**< */
MEDIA_KEY_PREVIOUS, /**< */
MEDIA_KEY_NEXT, /**< */
MEDIA_KEY_FASTFORWARD, /**< */
MEDIA_KEY_REWIND, /**< */
MEDIA_KEY_UNKNOWN,
} media_key_e;
/**
* @brief Enumeration of media key event status
*/
typedef enum
{
MEDIA_KEY_STATUS_PRESSED, /**< */
MEDIA_KEY_STATUS_RELEASED, /**< */
MEDIA_KEY_STATUS_UNKNOWN,
} media_key_event_e;
/**
* @brief Called when the status of media key is changed
* @param[in] key the key which has status change
* @param[in] status the status of key
* @param[in] user_data The user data passed from the callback registration function
* @pre media_key_reserve() will invoke this callback function.
* @see media_key_reserve()
* @see media_key_release()
*/
typedef void (*media_key_event_cb)(media_key_e key, media_key_event_e status, void* user_data);
/**
* @brief Registers a change event callback for all media keys.
*
* @param[in] callback The callback function to invoke
* @param[in] user_data The user data to be passed to the callback function
*
* @return 0 on success, otherwise a negative error value.
* @retval #MEDIA_KEY_ERROR_NONE Successful
* @retval #MEDIA_KEY_ERROR_INVALID_PARAMETER Invalid parameter
* @post runtime_info_changed_cb() will be invoked.
*
* @see media_key_release()
* @see media_key_event_cb()
*/
int media_key_reserve(media_key_event_cb callback, void* user_data);
/**
* @brief Unregisters the callback function.
*
* @param[in] key The runtime information type
* @return 0 on success, otherwise a negative error value.
* @retval #MEDIA_KEY_ERROR_NONE Successful
* @retval #MEDIA_KEY_ERROR_INVALID_PARAMETER Invalid parameter
*
* @see media_key_set_event_cb()
*/
int media_key_release();
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* __TIZEN_SYSTEM_MEDIA_KEY_H__ */
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