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/* Copyright (C) 2010 The Android Open Source Project
**
** This software is licensed under the terms of the GNU General Public
** License version 2, as published by the Free Software Foundation, and
** may be copied, distributed, and modified under those terms.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
*/
#ifndef _ANDROID_PROTOCOL_UI_COMMON_H
#define _ANDROID_PROTOCOL_UI_COMMON_H
/*
* Contains declarations for UI control protocol used by both the Core,
* and the UI.
*/
/* UI control command header.
* Every UI control command sent by the Core, or by the UI begins with this
* header, immediately followed by the command parameters (if there are any).
* Command type is defined by cmd_type field of this header. If command doesn't
* have any command-specific parameters, cmd_param_size field of this header
* must be 0.
*/
typedef struct UICmdHeader {
/* Command type. */
uint8_t cmd_type;
/* Byte size of the buffer containing parameters for the comand defined by
* the cmd_type field. The buffer containing parameters must immediately
* follow this header. If command doesn't have any parameters, this field
* must be 0 */
uint32_t cmd_param_size;
} UICmdHeader;
/* UI control command response header.
* If UI control command assumes a response from the remote end, the response
* must start with this header, immediately followed by the response data buffer.
*/
typedef struct UICmdRespHeader {
/* Result of the command handling. */
int result;
/* Byte size of the buffer containing response data immediately following
* this header. If there are no response data for the command, this field
* must be 0. */
uint32_t resp_data_size;
} UICmdRespHeader;
#endif /* _ANDROID_PROTOCOL_UI_COMMON_H */
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