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libavformat/url.h

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00001 /*
00002  *
00003  * This file is part of FFmpeg.
00004  *
00005  * FFmpeg is free software; you can redistribute it and/or
00006  * modify it under the terms of the GNU Lesser General Public
00007  * License as published by the Free Software Foundation; either
00008  * version 2.1 of the License, or (at your option) any later version.
00009  *
00010  * FFmpeg is distributed in the hope that it will be useful,
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013  * Lesser General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU Lesser General Public
00016  * License along with FFmpeg; if not, write to the Free Software
00017  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00018  */
00019 
00025 #ifndef AVFORMAT_URL_H
00026 #define AVFORMAT_URL_H
00027 
00028 #include "avio.h"
00029 #include "libavformat/version.h"
00030 
00031 #if !FF_API_OLD_AVIO
00032 #define URL_PROTOCOL_FLAG_NESTED_SCHEME 1 /*< The protocol name can be the first part of a nested protocol scheme */
00033 
00034 extern int (*url_interrupt_cb)(void);
00035 
00036 typedef struct URLContext {
00037     const AVClass *av_class;    
00038     struct URLProtocol *prot;
00039     void *priv_data;
00040     char *filename;             
00041     int flags;
00042     int max_packet_size;        
00043     int is_streamed;            
00044     int is_connected;
00045 } URLContext;
00046 
00047 typedef struct URLProtocol {
00048     const char *name;
00049     int     (*url_open)( URLContext *h, const char *url, int flags);
00050     int     (*url_read)( URLContext *h, unsigned char *buf, int size);
00051     int     (*url_write)(URLContext *h, const unsigned char *buf, int size);
00052     int64_t (*url_seek)( URLContext *h, int64_t pos, int whence);
00053     int     (*url_close)(URLContext *h);
00054     struct URLProtocol *next;
00055     int (*url_read_pause)(URLContext *h, int pause);
00056     int64_t (*url_read_seek)(URLContext *h, int stream_index,
00057                              int64_t timestamp, int flags);
00058     int (*url_get_file_handle)(URLContext *h);
00059     int priv_data_size;
00060     const AVClass *priv_data_class;
00061     int flags;
00062     int (*url_check)(URLContext *h, int mask);
00063 } URLProtocol;
00064 #endif
00065 
00077 int ffurl_alloc(URLContext **h, const char *url, int flags);
00078 
00082 int ffurl_connect(URLContext *h);
00083 
00095 int ffurl_open(URLContext **h, const char *url, int flags);
00096 
00106 int ffurl_read(URLContext *h, unsigned char *buf, int size);
00107 
00115 int ffurl_read_complete(URLContext *h, unsigned char *buf, int size);
00116 
00123 int ffurl_write(URLContext *h, const unsigned char *buf, int size);
00124 
00139 int64_t ffurl_seek(URLContext *h, int64_t pos, int whence);
00140 
00148 int ffurl_close(URLContext *h);
00149 
00155 int64_t ffurl_size(URLContext *h);
00156 
00163 int ffurl_get_file_handle(URLContext *h);
00164 
00170 int ffurl_register_protocol(URLProtocol *protocol, int size);
00171 
00172 /* udp.c */
00173 int ff_udp_set_remote_url(URLContext *h, const char *uri);
00174 int ff_udp_get_local_port(URLContext *h);
00175 
00176 #endif /* AVFORMAT_URL_H */

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