新增视频流播放

vlcdemo/vlc/vlc3/include64/plugins/vlc_picture_fifo.h

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+/*****************************************************************************
+ * vlc_picture_fifo.h: picture fifo definitions
+ *****************************************************************************
+ * Copyright (C) 2009 VLC authors and VideoLAN
+ * $Id: 73d1b20c279f628cf94bc7cfc83b2548878bcc07 $
+ *
+ * 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 Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser 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.
+ *****************************************************************************/
+
+#ifndef VLC_PICTURE_FIFO_H
+#define VLC_PICTURE_FIFO_H 1
+
+/**
+ * \file
+ * This file defines picture fifo structures and functions in vlc
+ */
+
+#include <vlc_picture.h>
+
+/**
+ * Picture fifo handle
+ *
+ * It is thread safe (push/pop).
+ */
+typedef struct picture_fifo_t picture_fifo_t;
+
+/**
+ * It creates an empty picture_fifo_t.
+ */
+VLC_API picture_fifo_t * picture_fifo_New( void ) VLC_USED;
+
+/**
+ * It destroys a fifo created by picture_fifo_New.
+ *
+ * All pictures inside the fifo will be released by picture_Release.
+ */
+VLC_API void picture_fifo_Delete( picture_fifo_t * );
+
+/**
+ * It retreives a picture_t from the fifo.
+ *
+ * If the fifo is empty, it return NULL without waiting.
+ */
+VLC_API picture_t * picture_fifo_Pop( picture_fifo_t * ) VLC_USED;
+
+/**
+ * It returns the first picture_t pointer from the fifo but does not
+ * remove it. The picture returned has been hold for you so you
+ * must call picture_Release on it.
+ *
+ * If the fifo is empty, it return NULL without waiting.
+ */
+VLC_API picture_t * picture_fifo_Peek( picture_fifo_t * ) VLC_USED;
+
+/**
+ * It saves a picture_t into the fifo.
+ */
+VLC_API void picture_fifo_Push( picture_fifo_t *, picture_t * );
+
+/**
+ * It release all picture inside the fifo that have a lower or equal date
+ * if flush_before or higher or equal to if not flush_before than the given one.
+ *
+ * All pictures inside the fifo will be released by picture_Release.
+ */
+VLC_API void picture_fifo_Flush( picture_fifo_t *, mtime_t date, bool flush_before );
+
+/**
+ * It applies a delta on all the picture timestamp.
+ */
+VLC_API void picture_fifo_OffsetDate( picture_fifo_t *, mtime_t delta );
+
+
+#endif /* VLC_PICTURE_FIFO_H */
+