1 /**************************************************************************
5 Copyright 2015 Samsung Electronics co., Ltd. All Rights Reserved.
7 Contact: Eunchul Kim <chulspro.kim@samsung.com>,
8 JinYoung Jeon <jy0.jeon@samsung.com>,
9 Taeheon Kim <th908.kim@samsung.com>,
10 YoungJun Cho <yj44.cho@samsung.com>,
11 SooChan Lim <sc1.lim@samsung.com>,
12 Boram Park <sc1.lim@samsung.com>
14 Permission is hereby granted, free of charge, to any person obtaining a
15 copy of this software and associated documentation files (the
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19 permit persons to whom the Software is furnished to do so, subject to
20 the following conditions:
22 The above copyright notice and this permission notice (including the
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34 **************************************************************************/
36 #ifndef _TDM_CLIENT_H_
37 #define _TDM_CLIENT_H_
45 * @brief The header file for a client of TDM.
48 #include <tdm_client.h> //for a client of TDM
53 * @brief The client error enumeration
57 TDM_CLIENT_ERROR_NONE = 0, /**< none */
58 TDM_CLIENT_ERROR_OPERATION_FAILED = -1, /**< operaion failed */
59 TDM_CLIENT_ERROR_INVALID_PARAMETER = -2, /**< wrong input parameter */
60 TDM_CLIENT_ERROR_PERMISSION_DENIED = -3, /**< access denied */
61 TDM_CLIENT_ERROR_OUT_OF_MEMORY = -4, /**< no free memory */
62 TDM_CLIENT_ERROR_DPMS_OFF = -5, /**< dpms off */
66 * @brief The TDM client object
68 typedef void *tdm_client;
71 * @brief The client vblank handler
72 * @see #tdm_client_wait_vblank
75 (*tdm_client_vblank_handler)(unsigned int sequence, unsigned int tv_sec,
76 unsigned int tv_usec, void *user_data);
79 * @brief Create a TDM client object.
80 * @param[out] error #TDM_CLIENT_ERROR_NONE if success. Otherwise, error value.
81 * @return A TDM client object if success. Otherwise, NULL.
82 * @see #tdm_client_destroy
85 tdm_client_create(tdm_client_error *error);
88 * @brief Destroy a TDM client object
89 * @param[in] client A TDM client object
90 * @see #tdm_client_create
93 tdm_client_destroy(tdm_client *client);
96 * @brief Get the file descriptor
97 * @param[in] client A TDM client object
98 * @param[out] fd The file descriptor
99 * @return #TDM_CLIENT_ERROR_NONE if success. Otherwise, error value.
100 * @see #tdm_client_handle_events
103 #include <tdm_client.h> //for a client of TDM
105 err = tdm_client_get_fd(client, &fd);
106 if (err != TDM_CLIENT_ERROR_NONE) {
115 ret = poll(&fds, 1, -1);
124 err = tdm_client_handle_events(client);
125 if (err != TDM_CLIENT_ERROR_NONE) {
132 tdm_client_get_fd(tdm_client *client, int *fd);
135 * @brief Handle the events of the given file descriptor
136 * @param[in] client A TDM client object
137 * @return #TDM_CLIENT_ERROR_NONE if success. Otherwise, error value.
138 * @see #tdm_client_get_fd
141 tdm_client_handle_events(tdm_client *client);
144 * @brief Wait for VBLANK
145 * @details After interval vblanks, a client vblank handler will be called.
146 * If 'sw_timer' param is 1 in case of DPMS off, TDM will use the SW timer and
147 * call a client vblank handler. Otherwise, this function will return error.
148 * @param[in] client A TDM client object
149 * @param[in] name The name of a TDM output
150 * @param[in] sw_timer 0: not using SW timer, 1: using SW timer
151 * @param[in] interval vblank interval
152 * @param[in] sync 0: asynchronous, 1:synchronous
153 * @param[in] func A client vblank handler
154 * @param[in] user_data The user data
155 * @return #TDM_CLIENT_ERROR_NONE if success. Otherwise, error value.
156 * @see #tdm_client_vblank_handler
159 tdm_client_wait_vblank(tdm_client *client, char *name,
160 int sw_timer, int interval, int sync,
161 tdm_client_vblank_handler func, void *user_data);
167 #endif /* _TDM_CLIENT_H_ */