新增视频流播放

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

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+/*****************************************************************************
+ * vlc_access.h: Access descriptor, queries and methods
+ *****************************************************************************
+ * Copyright (C) 1999-2006 VLC authors and VideoLAN
+ * $Id: da06554814885d03823aefbf58e858f6941b3400 $
+ *
+ * Authors: Laurent Aimar <fenrir@via.ecp.fr>
+ *
+ * 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_ACCESS_H
+#define VLC_ACCESS_H 1
+
+#include <vlc_stream.h>
+
+/**
+ * \defgroup access Access
+ * \ingroup stream
+ * Raw input byte streams
+ * @{
+ * \file
+ * Input byte stream modules interface
+ */
+
+/**
+ * Special redirection error code.
+ *
+ * In case of redirection, the access open function should clean up (as in
+ * normal failure case), store the heap-allocated redirection URL in
+ * stream_t.psz_url, and return this value.
+ */
+#define VLC_ACCESS_REDIRECT VLC_ETIMEOUT
+
+/**
+ * Opens a new read-only byte stream.
+ *
+ * This function might block.
+ * The initial offset is of course always zero.
+ *
+ * \param obj parent VLC object
+ * \param mrl media resource location to read
+ * \return a new access object on success, NULL on failure
+ */
+VLC_API stream_t *vlc_access_NewMRL(vlc_object_t *obj, const char *mrl);
+
+/**
+ * \defgroup access_helper Access Helpers
+ * @{
+ */
+
+/**
+ * Default pf_control callback for directory accesses.
+ */
+VLC_API int access_vaDirectoryControlHelper( stream_t *p_access, int i_query, va_list args );
+
+#define ACCESS_SET_CALLBACKS( read, block, control, seek ) \
+    do { \
+        p_access->pf_read = (read); \
+        p_access->pf_block = (block); \
+        p_access->pf_control = (control); \
+        p_access->pf_seek = (seek); \
+    } while(0)
+
+/**
+ * @} @}
+ */
+
+#endif