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
16 * "Software"), to deal in the Software without restriction, including
17 * without limitation the rights to use, copy, modify, merge, publish,
18 * distribute, sub license, and/or sell copies of the Software, and to
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
23 * next paragraph) shall be included in all copies or substantial portions
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
27 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
29 * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
30 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
31 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
32 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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
52 #include <tdm_client_types.h>
55 * @brief Create a TDM client object.
56 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
57 * @return A TDM client object if success. Otherwise, NULL.
58 * @see #tdm_client_destroy
61 tdm_client_create(tdm_error *error);
64 * @brief Destroy a TDM client object
65 * @param[in] client A TDM client object
66 * @see #tdm_client_create
69 tdm_client_destroy(tdm_client *client);
72 * @brief Get the file descriptor
73 * @param[in] client A TDM client object
74 * @param[out] fd The file descriptor
75 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
76 * @see #tdm_client_handle_events
79 * #include <tdm_client.h> //for a client of TDM
81 * err = tdm_client_get_fd(client, &fd);
82 * if (err != TDM_ERROR_NONE) {
86 * fds.events = POLLIN;
91 * ret = poll(&fds, 1, -1);
93 * if (errno == EINTR || errno == EAGAIN)
100 * err = tdm_client_handle_events(client);
101 * if (err != TDM_ERROR_NONE) {
108 tdm_client_get_fd(tdm_client *client, int *fd);
111 * @brief Handle the events of the given file descriptor
112 * @param[in] client A TDM client object
113 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
114 * @see #tdm_client_get_fd
117 tdm_client_handle_events(tdm_client *client);
120 * @brief @b Deprecated. Wait for VBLANK.
122 * @details After interval vblanks, a client vblank handler will be called.
123 * If 'sw_timer' param is 1 in case of DPMS off, TDM will use the SW timer and
124 * call a client vblank handler. Otherwise, this function will return error.
125 * @param[in] client A TDM client object
126 * @param[in] name The name of a TDM output
127 * @param[in] sw_timer 0: not using SW timer, 1: using SW timer
128 * @param[in] interval vblank interval
129 * @param[in] sync 0: asynchronous, 1:synchronous
130 * @param[in] func A client vblank handler
131 * @param[in] user_data The user data
132 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
133 * @see #tdm_client_vblank_handler
136 tdm_client_wait_vblank(tdm_client *client, char *name,
137 int sw_timer, int interval, int sync,
138 tdm_client_vblank_handler2 func, void *user_data);
141 * @brief Get the client output object which has the given name.
143 * The client output name can be @b 'primary' or @b 'default' to get the main output.
144 * @param[in] client The TDM client object
145 * @param[in] name The name of the TDM client output object
146 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
147 * @return A client output object if success. Otherwise, NULL.
150 tdm_client_get_output(tdm_client *client, char *name, tdm_error *error);
153 * @brief Add the client output change handler
154 * @details The handler will be called when the status of a
155 * client output object is changed. connection, DPMS, etc.
156 * @param[in] output The client output object
157 * @param[in] func The client output change handler
158 * @param[in] user_data The user data
159 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
162 * #include <tdm_client.h> //for a client of TDM
165 * _client_output_handler(tdm_client_output *output, tdm_output_change_type type,
166 * tdm_value value, void *user_data)
168 * char *conn_str[3] = {"disconnected", "connected", "mode_setted"};
169 * char *dpms_str[4] = {"on", "standy", "suspend", "off"};
171 * if (type == TDM_OUTPUT_CHANGE_CONNECTION)
172 * printf("output %s.\n", conn_str[value.u32]);
173 * else if (type == TDM_OUTPUT_CHANGE_DPMS)
174 * printf("dpms %s.\n", dpms_str[value.u32]);
177 * tdm_client_output_add_change_handler(output, _client_output_handler, NULL);
179 * tdm_client_output_remove_change_handler(output, _client_output_handler, NULL);
184 tdm_client_output_add_change_handler(tdm_client_output *output,
185 tdm_client_output_change_handler func,
189 * @brief Remove the client output change handler
190 * @param[in] output The client output object
191 * @param[in] func The client output change handler
192 * @param[in] user_data The user data
193 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
196 tdm_client_output_remove_change_handler(tdm_client_output *output,
197 tdm_client_output_change_handler func,
201 * @brief Get the vertical refresh rate of the given client output
202 * @param[in] output The client output object
203 * @param[out] refresh The refresh rate
204 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
207 tdm_client_output_get_refresh_rate(tdm_client_output *output, unsigned int *refresh);
210 * @brief Get the connection status of the given client output
211 * @param[in] output The client output object
212 * @param[out] status The connection status
213 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
216 tdm_client_output_get_conn_status(tdm_client_output *output, tdm_output_conn_status *status);
219 * @brief Get the DPMS value of the given client output
220 * @param[in] output The client output object
221 * @param[out] dpms The DPMS value
222 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
225 tdm_client_output_get_dpms(tdm_client_output *output, tdm_output_dpms *dpms);
228 * @brief Create the client vblank object of the given client output
229 * @param[in] output The client output object
230 * @param[out] error #TDM_ERROR_NONE if success. Otherwise, error value.
231 * @return A client vblank object if success. Otherwise, NULL.
234 tdm_client_output_create_vblank(tdm_client_output *output, tdm_error *error);
237 * @brief Destroy the client vblank object
238 * @param[in] vblank The client vblank object
241 tdm_client_vblank_destroy(tdm_client_vblank *vblank);
244 * @brief Set the sync value to the client vblank object
246 * If sync == 1, the user client vblank handler of #tdm_client_vblank_wait
247 * will be called before #tdm_client_vblank_wait returns the result. If sync == 0,
248 * the user client vblank handler of #tdm_client_vblank_wait will be called
249 * asynchronously after #tdm_client_vblank_wait returns. Default is @b asynchronous.
250 * @param[in] vblank The client vblank object
251 * @param[in] sync 0: asynchronous, 1:synchronous
252 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
255 tdm_client_vblank_set_sync(tdm_client_vblank *vblank, unsigned int sync);
258 * @brief Set the fps to the client vblank object
259 * @details Default is the @b vertical @b refresh @b rate of the given client output.
260 * @param[in] vblank The client vblank object
261 * @param[in] fps more than 0
262 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
265 tdm_client_vblank_set_fps(tdm_client_vblank *vblank, unsigned int fps);
268 * @brief Set the offset(milli-second) to the client vblank object
269 * @details Default is @b 0.
270 * @param[in] vblank The client vblank object
271 * @param[in] offset_ms the offset(milli-second)
272 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
275 tdm_client_vblank_set_offset(tdm_client_vblank *vblank, int offset_ms);
278 * @brief Enable/Disable the fake vblank to the client vblank object
280 * If enable_fake == 0, #tdm_client_vblank_wait will return TDM_ERROR_DPMS_OFF
281 * when DPMS off. Otherwise, #tdm_client_vblank_wait will return TDM_ERROR_NONE
282 * as success. Once #tdm_client_vblank_wait returns TDM_ERROR_NONE, the user client
283 * vblank handler(#tdm_client_vblank_handler) SHOULD be called after the given
284 * interval of #tdm_client_vblank_wait. Default is @b disable.
285 * @param[in] vblank The client vblank object
286 * @param[in] enable_fake 1:enable, 0:disable
287 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
290 tdm_client_vblank_set_enable_fake(tdm_client_vblank *vblank, unsigned int enable_fake);
293 * @brief Wait for a vblank
295 * This function will return TDM_ERROR_DPMS_OFF when DPMS off. However,
296 * #tdm_client_vblank_wait will return TDM_ERROR_NONE as success if
297 * #tdm_client_vblank_set_enable_fake sets true. Once #tdm_client_vblank_wait
298 * returns TDM_ERROR_NONE, the user client vblank handler(#tdm_client_vblank_handler)
299 * SHOULD be called after the given interval. \n
300 * The sequence value of tdm_client_vblank_handler is the relative value of fps.
301 * If fps = 10, this sequence value should be increased by 10 during 1 second.
302 * @param[in] vblank The client vblank object
303 * @param[in] interval The vblank interval
304 * @param[in] func The user client vblank handler
305 * @param[in] user_data The user data
306 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
309 * #include <tdm_client.h> //for a client of TDM
312 * _client_vblank_handler(tdm_client_vblank *vblank, tdm_error error, unsigned int sequence,
313 * unsigned int tv_sec, unsigned int tv_usec, void *user_data)
315 * if (error != TDM_ERROR_NONE)
320 * tdm_client_output *output;
321 * tdm_client_vblank *vblank;
326 * cliet = tdm_client_create(&error);
327 * if (error != TDM_ERROR_NONE)
330 * output = tdm_client_get_output(client, NULL, &error);
331 * if (error != TDM_ERROR_NONE)
334 * vblank = tdm_client_output_create_vblank(output, &error);
335 * if (error != TDM_ERROR_NONE)
338 * tdm_client_vblank_set_enable_fake(vblank, enable_fake); //default: disable
339 * tdm_client_vblank_set_sync(vblank, 0); //default: async
340 * tdm_client_vblank_set_fps(vblank, fps); //default: refresh rate of output
341 * tdm_client_vblank_set_offset(vblank, offset); //default: 0
343 * error = tdm_client_get_fd(data->client, &fd);
344 * if (error != TDM_ERROR_NONE)
347 * fds.events = POLLIN;
354 * error = tdm_client_vblank_wait(vblank, interval,
355 * _client_vblank_handler, NULL);
356 * if (error != TDM_ERROR_NONE)
359 * ret = poll(&fds, 1, -1);
361 * if (errno == EINTR || errno == EAGAIN) // normal case
367 * error = tdm_client_handle_events(client);
368 * if (error != TDM_ERROR_NONE)
372 * tdm_client_vblank_destroy(vblank);
373 * tdm_client_destroy(client);
378 tdm_client_vblank_wait(tdm_client_vblank *vblank, unsigned int interval, tdm_client_vblank_handler func, void *user_data);
381 * @brief Wait for a vblank with the target sequence number
383 * This function will return TDM_ERROR_DPMS_OFF when DPMS off. However,
384 * #tdm_client_vblank_wait will return TDM_ERROR_NONE as success if
385 * #tdm_client_vblank_set_enable_fake sets true. Once #tdm_client_vblank_wait_seq
386 * returns TDM_ERROR_NONE, the user client vblank handler(#tdm_client_vblank_handler)
387 * SHOULD be called on reaching the target sequence.
388 * If the sequence value is 0, the result will be the same with calling
389 * #tdm_client_vblank_wait with (interval = 1).
390 * @param[in] vblank The client vblank object
391 * @param[in] sequence The target sequence number
392 * @param[in] func The user client vblank handler
393 * @param[in] user_data The user data
394 * @return #TDM_ERROR_NONE if success. Otherwise, error value.
397 tdm_client_vblank_wait_seq(tdm_client_vblank *vblank, unsigned int sequence, tdm_client_vblank_handler func, void *user_data);
403 #endif /* _TDM_CLIENT_H_ */