1 /*****************************************************************************
2 * control.c : vout internal control
3 *****************************************************************************
4 * Copyright (C) 2009 Laurent Aimar
7 * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
28 #include <vlc_common.h>
32 void vout_control_cmd_Init(vout_control_cmd_t *cmd, int type)
34 memset(cmd, 0, sizeof(*cmd));
38 void vout_control_cmd_Clean(vout_control_cmd_t *cmd)
41 case VOUT_CONTROL_OSD_TITLE:
42 case VOUT_CONTROL_CHANGE_FILTERS:
43 case VOUT_CONTROL_CHANGE_SUB_FILTERS:
52 void vout_control_Init(vout_control_t *ctrl)
54 vlc_mutex_init(&ctrl->lock);
55 vlc_cond_init(&ctrl->wait_request);
56 vlc_cond_init(&ctrl->wait_acknowledge);
58 ctrl->is_dead = false;
59 ctrl->is_sleeping = false;
60 ctrl->can_sleep = true;
61 ctrl->is_processing = false;
62 ARRAY_INIT(ctrl->cmd);
65 void vout_control_Clean(vout_control_t *ctrl)
68 for (int i = 0; i < ctrl->cmd.i_size; i++) {
69 vout_control_cmd_t cmd = ARRAY_VAL(ctrl->cmd, i);
70 vout_control_cmd_Clean(&cmd);
72 ARRAY_RESET(ctrl->cmd);
74 vlc_mutex_destroy(&ctrl->lock);
75 vlc_cond_destroy(&ctrl->wait_request);
76 vlc_cond_destroy(&ctrl->wait_acknowledge);
79 void vout_control_Dead(vout_control_t *ctrl)
81 vlc_mutex_lock(&ctrl->lock);
83 vlc_cond_broadcast(&ctrl->wait_acknowledge);
84 vlc_mutex_unlock(&ctrl->lock);
88 void vout_control_WaitEmpty(vout_control_t *ctrl)
90 vlc_mutex_lock(&ctrl->lock);
91 while ((ctrl->cmd.i_size > 0 || ctrl->is_processing) && !ctrl->is_dead)
92 vlc_cond_wait(&ctrl->wait_acknowledge, &ctrl->lock);
93 vlc_mutex_unlock(&ctrl->lock);
96 void vout_control_Push(vout_control_t *ctrl, vout_control_cmd_t *cmd)
98 vlc_mutex_lock(&ctrl->lock);
100 ARRAY_APPEND(ctrl->cmd, *cmd);
101 vlc_cond_signal(&ctrl->wait_request);
103 vout_control_cmd_Clean(cmd);
105 vlc_mutex_unlock(&ctrl->lock);
108 void vout_control_Wake(vout_control_t *ctrl)
110 vlc_mutex_lock(&ctrl->lock);
111 ctrl->can_sleep = false;
112 if (ctrl->is_sleeping)
113 vlc_cond_signal(&ctrl->wait_request);
114 vlc_mutex_unlock(&ctrl->lock);
117 void vout_control_PushVoid(vout_control_t *ctrl, int type)
119 vout_control_cmd_t cmd;
121 vout_control_cmd_Init(&cmd, type);
122 vout_control_Push(ctrl, &cmd);
124 void vout_control_PushBool(vout_control_t *ctrl, int type, bool boolean)
126 vout_control_cmd_t cmd;
128 vout_control_cmd_Init(&cmd, type);
129 cmd.u.boolean = boolean;
130 vout_control_Push(ctrl, &cmd);
132 void vout_control_PushTime(vout_control_t *ctrl, int type, mtime_t time)
134 vout_control_cmd_t cmd;
136 vout_control_cmd_Init(&cmd, type);
138 vout_control_Push(ctrl, &cmd);
140 void vout_control_PushMessage(vout_control_t *ctrl, int type, int channel, const char *string)
142 vout_control_cmd_t cmd;
144 vout_control_cmd_Init(&cmd, type);
145 cmd.u.message.channel = channel;
146 cmd.u.message.string = strdup(string);
147 vout_control_Push(ctrl, &cmd);
149 void vout_control_PushPair(vout_control_t *ctrl, int type, int a, int b)
151 vout_control_cmd_t cmd;
153 vout_control_cmd_Init(&cmd, type);
156 vout_control_Push(ctrl, &cmd);
158 void vout_control_PushString(vout_control_t *ctrl, int type, const char *string)
160 vout_control_cmd_t cmd;
162 vout_control_cmd_Init(&cmd, type);
163 cmd.u.string = strdup(string);
164 vout_control_Push(ctrl, &cmd);
167 int vout_control_Pop(vout_control_t *ctrl, vout_control_cmd_t *cmd,
168 mtime_t deadline, mtime_t timeout)
170 vlc_mutex_lock(&ctrl->lock);
171 if (ctrl->cmd.i_size <= 0) {
172 ctrl->is_processing = false;
173 vlc_cond_broadcast(&ctrl->wait_acknowledge);
175 const mtime_t max_deadline = mdate() + timeout;
177 /* Supurious wake up are perfectly fine */
178 if (deadline <= VLC_TS_INVALID) {
179 ctrl->is_sleeping = true;
181 vlc_cond_timedwait(&ctrl->wait_request, &ctrl->lock, max_deadline);
182 ctrl->is_sleeping = false;
184 vlc_cond_timedwait(&ctrl->wait_request, &ctrl->lock, __MIN(deadline, max_deadline));
189 if (ctrl->cmd.i_size > 0) {
191 *cmd = ARRAY_VAL(ctrl->cmd, 0);
192 ARRAY_REMOVE(ctrl->cmd, 0);
194 ctrl->is_processing = true;
197 ctrl->can_sleep = true;
199 vlc_mutex_unlock(&ctrl->lock);
201 return has_cmd ? VLC_SUCCESS : VLC_EGENERIC;