+/*****************************************************************************
+ * control.c : vout internal control
+ *****************************************************************************
+ * Copyright (C) 2009 Laurent Aimar
+ * $Id$
+ *
+ * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include "control.h"
+
+/* */
+void vout_control_cmd_Init(vout_control_cmd_t *cmd, int type)
+{
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->type = type;
+}
+
+void vout_control_cmd_Clean(vout_control_cmd_t *cmd)
+{
+ switch (cmd->type) {
+ //case VOUT_CONTROL_OSD_MESSAGE:
+ case VOUT_CONTROL_OSD_TITLE:
+ free(cmd->u.message.string);
+ break;
+#if 0
+ case VOUT_CONTROL_OSD_TEXT:
+ free(cmd->text.string);
+ if (cmd->text.style)
+ text_style_Delete(cmd->text.style);
+ break;
+ case VOUT_CONTROL_OSD_SUBPICTURE:
+ if (cmd->subpicture)
+ subpicture_Delete(cmd->subpicture);
+ break;
+#endif
+ default:
+ break;
+ }
+}
+
+/* */
+void vout_control_Init(vout_control_t *ctrl)
+{
+ vlc_mutex_init(&ctrl->lock);
+ vlc_cond_init(&ctrl->wait_request);
+ vlc_cond_init(&ctrl->wait_acknowledge);
+
+ ctrl->is_dead = false;
+ ctrl->is_sleeping = false;
+ ctrl->can_sleep = true;
+ ctrl->is_processing = false;
+ ARRAY_INIT(ctrl->cmd);
+}
+
+void vout_control_Clean(vout_control_t *ctrl)
+{
+ /* */
+ for (int i = 0; i < ctrl->cmd.i_size; i++) {
+ vout_control_cmd_t cmd = ARRAY_VAL(ctrl->cmd, i);
+ vout_control_cmd_Clean(&cmd);
+ }
+ ARRAY_RESET(ctrl->cmd);
+
+ vlc_mutex_destroy(&ctrl->lock);
+ vlc_cond_destroy(&ctrl->wait_request);
+ vlc_cond_destroy(&ctrl->wait_acknowledge);
+}
+
+void vout_control_Dead(vout_control_t *ctrl)
+{
+ vlc_mutex_lock(&ctrl->lock);
+ ctrl->is_dead = true;
+ vlc_cond_broadcast(&ctrl->wait_acknowledge);
+ vlc_mutex_unlock(&ctrl->lock);
+
+}
+
+void vout_control_WaitEmpty(vout_control_t *ctrl)
+{
+ vlc_mutex_lock(&ctrl->lock);
+ while ((ctrl->cmd.i_size > 0 || ctrl->is_processing) && !ctrl->is_dead)
+ vlc_cond_wait(&ctrl->wait_acknowledge, &ctrl->lock);
+ vlc_mutex_unlock(&ctrl->lock);
+}
+
+void vout_control_Push(vout_control_t *ctrl, vout_control_cmd_t *cmd)
+{
+ vlc_mutex_lock(&ctrl->lock);
+ if (!ctrl->is_dead) {
+ ARRAY_APPEND(ctrl->cmd, *cmd);
+ vlc_cond_signal(&ctrl->wait_request);
+ } else {
+ vout_control_cmd_Clean(cmd);
+ }
+ vlc_mutex_unlock(&ctrl->lock);
+}
+
+void vout_control_Wake(vout_control_t *ctrl)
+{
+ vlc_mutex_lock(&ctrl->lock);
+ ctrl->can_sleep = false;
+ if (ctrl->is_sleeping)
+ vlc_cond_signal(&ctrl->wait_request);
+ vlc_mutex_unlock(&ctrl->lock);
+}
+
+void vout_control_PushVoid(vout_control_t *ctrl, int type)
+{
+ vout_control_cmd_t cmd;
+
+ vout_control_cmd_Init(&cmd, type);
+ vout_control_Push(ctrl, &cmd);
+}
+void vout_control_PushBool(vout_control_t *ctrl, int type, bool boolean)
+{
+ vout_control_cmd_t cmd;
+
+ vout_control_cmd_Init(&cmd, type);
+ cmd.u.boolean = boolean;
+ vout_control_Push(ctrl, &cmd);
+}
+void vout_control_PushTime(vout_control_t *ctrl, int type, mtime_t time)
+{
+ vout_control_cmd_t cmd;
+
+ vout_control_cmd_Init(&cmd, type);
+ cmd.u.time = time;
+ vout_control_Push(ctrl, &cmd);
+}
+void vout_control_PushMessage(vout_control_t *ctrl, int type, int channel, const char *string)
+{
+ vout_control_cmd_t cmd;
+
+ vout_control_cmd_Init(&cmd, type);
+ cmd.u.message.channel = channel;
+ cmd.u.message.string = strdup(string);
+ vout_control_Push(ctrl, &cmd);
+}
+void vout_control_PushPair(vout_control_t *ctrl, int type, int a, int b)
+{
+ vout_control_cmd_t cmd;
+
+ vout_control_cmd_Init(&cmd, type);
+ cmd.u.pair.a = a;
+ cmd.u.pair.b = b;
+ vout_control_Push(ctrl, &cmd);
+}
+
+int vout_control_Pop(vout_control_t *ctrl, vout_control_cmd_t *cmd,
+ mtime_t deadline, mtime_t timeout)
+{
+ vlc_mutex_lock(&ctrl->lock);
+ if (ctrl->cmd.i_size <= 0) {
+ ctrl->is_processing = false;
+ vlc_cond_broadcast(&ctrl->wait_acknowledge);
+
+ const mtime_t max_deadline = mdate() + timeout;
+
+ /* Supurious wake up are perfectly fine */
+ if (deadline <= VLC_TS_INVALID) {
+ ctrl->is_sleeping = true;
+ if (ctrl->can_sleep)
+ vlc_cond_timedwait(&ctrl->wait_request, &ctrl->lock, max_deadline);
+ ctrl->is_sleeping = false;
+ } else {
+ vlc_cond_timedwait(&ctrl->wait_request, &ctrl->lock, __MIN(deadline, max_deadline));
+ }
+ }
+
+ bool has_cmd;
+ if (ctrl->cmd.i_size > 0) {
+ has_cmd = true;
+ *cmd = ARRAY_VAL(ctrl->cmd, 0);
+ ARRAY_REMOVE(ctrl->cmd, 0);
+
+ ctrl->is_processing = true;
+ } else {
+ has_cmd = false;
+ ctrl->can_sleep = true;
+ }
+ vlc_mutex_unlock(&ctrl->lock);
+
+ return has_cmd ? VLC_SUCCESS : VLC_EGENERIC;
+}
+