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:
51 void vout_control_Init(vout_control_t *ctrl)
53 vlc_mutex_init(&ctrl->lock);
54 vlc_cond_init(&ctrl->wait_request);
55 vlc_cond_init(&ctrl->wait_acknowledge);
57 ctrl->is_dead = false;
58 ctrl->is_sleeping = false;
59 ctrl->can_sleep = true;
60 ctrl->is_processing = false;
61 ARRAY_INIT(ctrl->cmd);
64 void vout_control_Clean(vout_control_t *ctrl)
67 for (int i = 0; i < ctrl->cmd.i_size; i++) {
68 vout_control_cmd_t cmd = ARRAY_VAL(ctrl->cmd, i);
69 vout_control_cmd_Clean(&cmd);
71 ARRAY_RESET(ctrl->cmd);
73 vlc_mutex_destroy(&ctrl->lock);
74 vlc_cond_destroy(&ctrl->wait_request);
75 vlc_cond_destroy(&ctrl->wait_acknowledge);
78 void vout_control_Dead(vout_control_t *ctrl)
80 vlc_mutex_lock(&ctrl->lock);
82 vlc_cond_broadcast(&ctrl->wait_acknowledge);
83 vlc_mutex_unlock(&ctrl->lock);
87 void vout_control_WaitEmpty(vout_control_t *ctrl)
89 vlc_mutex_lock(&ctrl->lock);
90 while ((ctrl->cmd.i_size > 0 || ctrl->is_processing) && !ctrl->is_dead)
91 vlc_cond_wait(&ctrl->wait_acknowledge, &ctrl->lock);
92 vlc_mutex_unlock(&ctrl->lock);
95 void vout_control_Push(vout_control_t *ctrl, vout_control_cmd_t *cmd)
97 vlc_mutex_lock(&ctrl->lock);
99 ARRAY_APPEND(ctrl->cmd, *cmd);
100 vlc_cond_signal(&ctrl->wait_request);
102 vout_control_cmd_Clean(cmd);
104 vlc_mutex_unlock(&ctrl->lock);
107 void vout_control_Wake(vout_control_t *ctrl)
109 vlc_mutex_lock(&ctrl->lock);
110 ctrl->can_sleep = false;
111 if (ctrl->is_sleeping)
112 vlc_cond_signal(&ctrl->wait_request);
113 vlc_mutex_unlock(&ctrl->lock);
116 void vout_control_PushVoid(vout_control_t *ctrl, int type)
118 vout_control_cmd_t cmd;
120 vout_control_cmd_Init(&cmd, type);
121 vout_control_Push(ctrl, &cmd);
123 void vout_control_PushBool(vout_control_t *ctrl, int type, bool boolean)
125 vout_control_cmd_t cmd;
127 vout_control_cmd_Init(&cmd, type);
128 cmd.u.boolean = boolean;
129 vout_control_Push(ctrl, &cmd);
131 void vout_control_PushTime(vout_control_t *ctrl, int type, mtime_t time)
133 vout_control_cmd_t cmd;
135 vout_control_cmd_Init(&cmd, type);
137 vout_control_Push(ctrl, &cmd);
139 void vout_control_PushMessage(vout_control_t *ctrl, int type, int channel, const char *string)
141 vout_control_cmd_t cmd;
143 vout_control_cmd_Init(&cmd, type);
144 cmd.u.message.channel = channel;
145 cmd.u.message.string = strdup(string);
146 vout_control_Push(ctrl, &cmd);
148 void vout_control_PushPair(vout_control_t *ctrl, int type, int a, int b)
150 vout_control_cmd_t cmd;
152 vout_control_cmd_Init(&cmd, type);
155 vout_control_Push(ctrl, &cmd);
157 void vout_control_PushString(vout_control_t *ctrl, int type, const char *string)
159 vout_control_cmd_t cmd;
161 vout_control_cmd_Init(&cmd, type);
162 cmd.u.string = strdup(string);
163 vout_control_Push(ctrl, &cmd);
166 int vout_control_Pop(vout_control_t *ctrl, vout_control_cmd_t *cmd,
167 mtime_t deadline, mtime_t timeout)
169 vlc_mutex_lock(&ctrl->lock);
170 if (ctrl->cmd.i_size <= 0) {
171 ctrl->is_processing = false;
172 vlc_cond_broadcast(&ctrl->wait_acknowledge);
174 const mtime_t max_deadline = mdate() + timeout;
176 /* Supurious wake up are perfectly fine */
177 if (deadline <= VLC_TS_INVALID) {
178 ctrl->is_sleeping = true;
180 vlc_cond_timedwait(&ctrl->wait_request, &ctrl->lock, max_deadline);
181 ctrl->is_sleeping = false;
183 vlc_cond_timedwait(&ctrl->wait_request, &ctrl->lock, __MIN(deadline, max_deadline));
188 if (ctrl->cmd.i_size > 0) {
190 *cmd = ARRAY_VAL(ctrl->cmd, 0);
191 ARRAY_REMOVE(ctrl->cmd, 0);
193 ctrl->is_processing = true;
196 ctrl->can_sleep = true;
198 vlc_mutex_unlock(&ctrl->lock);
200 return has_cmd ? VLC_SUCCESS : VLC_EGENERIC;