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>
33 void vout_control_cmd_Init(vout_control_cmd_t *cmd, int type)
35 memset(cmd, 0, sizeof(*cmd));
39 void vout_control_cmd_Clean(vout_control_cmd_t *cmd)
42 case VOUT_CONTROL_OSD_TITLE:
43 case VOUT_CONTROL_CHANGE_FILTERS:
44 case VOUT_CONTROL_CHANGE_SUB_FILTERS:
53 void vout_control_Init(vout_control_t *ctrl)
55 vlc_mutex_init(&ctrl->lock);
56 vlc_cond_init(&ctrl->wait_request);
57 vlc_cond_init(&ctrl->wait_acknowledge);
59 ctrl->is_dead = false;
60 ctrl->is_sleeping = false;
61 ctrl->can_sleep = true;
62 ctrl->is_processing = false;
63 ARRAY_INIT(ctrl->cmd);
66 void vout_control_Clean(vout_control_t *ctrl)
69 for (int i = 0; i < ctrl->cmd.i_size; i++) {
70 vout_control_cmd_t cmd = ARRAY_VAL(ctrl->cmd, i);
71 vout_control_cmd_Clean(&cmd);
73 ARRAY_RESET(ctrl->cmd);
75 vlc_mutex_destroy(&ctrl->lock);
76 vlc_cond_destroy(&ctrl->wait_request);
77 vlc_cond_destroy(&ctrl->wait_acknowledge);
80 void vout_control_Dead(vout_control_t *ctrl)
82 vlc_mutex_lock(&ctrl->lock);
84 vlc_cond_broadcast(&ctrl->wait_acknowledge);
85 vlc_mutex_unlock(&ctrl->lock);
89 void vout_control_WaitEmpty(vout_control_t *ctrl)
91 vlc_mutex_lock(&ctrl->lock);
92 while ((ctrl->cmd.i_size > 0 || ctrl->is_processing) && !ctrl->is_dead)
93 vlc_cond_wait(&ctrl->wait_acknowledge, &ctrl->lock);
94 vlc_mutex_unlock(&ctrl->lock);
97 void vout_control_Push(vout_control_t *ctrl, vout_control_cmd_t *cmd)
99 vlc_mutex_lock(&ctrl->lock);
100 if (!ctrl->is_dead) {
101 ARRAY_APPEND(ctrl->cmd, *cmd);
102 vlc_cond_signal(&ctrl->wait_request);
104 vout_control_cmd_Clean(cmd);
106 vlc_mutex_unlock(&ctrl->lock);
109 void vout_control_Wake(vout_control_t *ctrl)
111 vlc_mutex_lock(&ctrl->lock);
112 ctrl->can_sleep = false;
113 if (ctrl->is_sleeping)
114 vlc_cond_signal(&ctrl->wait_request);
115 vlc_mutex_unlock(&ctrl->lock);
118 void vout_control_PushVoid(vout_control_t *ctrl, int type)
120 vout_control_cmd_t cmd;
122 vout_control_cmd_Init(&cmd, type);
123 vout_control_Push(ctrl, &cmd);
125 void vout_control_PushBool(vout_control_t *ctrl, int type, bool boolean)
127 vout_control_cmd_t cmd;
129 vout_control_cmd_Init(&cmd, type);
130 cmd.u.boolean = boolean;
131 vout_control_Push(ctrl, &cmd);
133 void vout_control_PushTime(vout_control_t *ctrl, int type, mtime_t time)
135 vout_control_cmd_t cmd;
137 vout_control_cmd_Init(&cmd, type);
139 vout_control_Push(ctrl, &cmd);
141 void vout_control_PushMessage(vout_control_t *ctrl, int type, int channel, const char *string)
143 vout_control_cmd_t cmd;
145 vout_control_cmd_Init(&cmd, type);
146 cmd.u.message.channel = channel;
147 cmd.u.message.string = strdup(string);
148 vout_control_Push(ctrl, &cmd);
150 void vout_control_PushPair(vout_control_t *ctrl, int type, int a, int b)
152 vout_control_cmd_t cmd;
154 vout_control_cmd_Init(&cmd, type);
157 vout_control_Push(ctrl, &cmd);
159 void vout_control_PushString(vout_control_t *ctrl, int type, const char *string)
161 vout_control_cmd_t cmd;
163 vout_control_cmd_Init(&cmd, type);
164 cmd.u.string = strdup(string);
165 vout_control_Push(ctrl, &cmd);
168 int vout_control_Pop(vout_control_t *ctrl, vout_control_cmd_t *cmd,
169 mtime_t deadline, mtime_t timeout)
171 vlc_mutex_lock(&ctrl->lock);
172 if (ctrl->cmd.i_size <= 0) {
173 ctrl->is_processing = false;
174 vlc_cond_broadcast(&ctrl->wait_acknowledge);
176 const mtime_t max_deadline = mdate() + timeout;
178 /* Supurious wake up are perfectly fine */
179 if (deadline <= VLC_TS_INVALID) {
180 ctrl->is_sleeping = true;
182 vlc_cond_timedwait(&ctrl->wait_request, &ctrl->lock, max_deadline);
183 ctrl->is_sleeping = false;
185 vlc_cond_timedwait(&ctrl->wait_request, &ctrl->lock, __MIN(deadline, max_deadline));
190 if (ctrl->cmd.i_size > 0) {
192 *cmd = ARRAY_VAL(ctrl->cmd, 0);
193 ARRAY_REMOVE(ctrl->cmd, 0);
195 ctrl->is_processing = true;
198 ctrl->can_sleep = true;
200 vlc_mutex_unlock(&ctrl->lock);
202 return has_cmd ? VLC_SUCCESS : VLC_EGENERIC;