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448 lines
15 KiB
448 lines
15 KiB
/*****************************************************************************
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* standard.c: standard stream output module
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*****************************************************************************
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* Copyright (C) 2003-2011 VLC authors and VideoLAN
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*
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* Authors: Laurent Aimar <fenrir@via.ecp.fr>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <vlc_common.h>
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#include <vlc_plugin.h>
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#include <vlc_sout.h>
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#include <vlc_network.h>
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#include <vlc_url.h>
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#include <vlc_memstream.h>
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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#define ACCESS_TEXT N_("Output access method")
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#define ACCESS_LONGTEXT N_( \
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"Output method to use for the stream." )
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#define MUX_TEXT N_("Output muxer")
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#define MUX_LONGTEXT N_( \
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"Muxer to use for the stream." )
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#define DEST_TEXT N_("Output destination")
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#define DEST_LONGTEXT N_( \
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"Destination (URL) to use for the stream. Overrides path and bind parameters" )
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#define BIND_TEXT N_("Address to bind to (helper setting for dst)")
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#define BIND_LONGTEXT N_( \
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"address:port to bind vlc to listening incoming streams. "\
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"Helper setting for dst, dst=bind+'/'+path. dst-parameter overrides this." )
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#define PATH_TEXT N_("Filename for stream (helper setting for dst)")
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#define PATH_LONGTEXT N_( \
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"Filename for stream. "\
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"Helper setting for dst, dst=bind+'/'+path. dst-parameter overrides this." )
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#define NAME_TEXT N_("Session name")
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#define NAME_LONGTEXT N_( \
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"This is the name of the session that will be announced in the SDP " \
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"(Session Descriptor)." )
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#define DESC_TEXT N_("Session description")
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#define DESC_LONGTEXT N_( \
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"This allows you to give a short description with details about the stream, " \
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"that will be announced in the SDP (Session Descriptor)." )
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#define URL_TEXT N_("Session URL")
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#define URL_LONGTEXT N_( \
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"This allows you to give a URL with more details about the stream " \
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"(often the website of the streaming organization), that will " \
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"be announced in the SDP (Session Descriptor)." )
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#define EMAIL_TEXT N_("Session email")
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#define EMAIL_LONGTEXT N_( \
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"This allows you to give a contact mail address for the stream, that will " \
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"be announced in the SDP (Session Descriptor)." )
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#define SAP_TEXT N_("SAP announcing")
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#define SAP_LONGTEXT N_("Announce this session with SAP.")
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static int Open ( vlc_object_t * );
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static void Close ( vlc_object_t * );
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#define SOUT_CFG_PREFIX "sout-standard-"
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#ifdef ENABLE_SRT
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#define SRT_SHORTCUT "srt"
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#else
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#define SRT_SHORTCUT
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#endif
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vlc_module_begin ()
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set_shortname( N_("Standard"))
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set_description( N_("Standard stream output") )
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set_capability( "sout stream", 50 )
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add_shortcut( "standard", "std", "file", "http", "udp", SRT_SHORTCUT )
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set_category( CAT_SOUT )
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set_subcategory( SUBCAT_SOUT_STREAM )
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add_string( SOUT_CFG_PREFIX "access", "", ACCESS_TEXT, ACCESS_LONGTEXT, false )
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add_string( SOUT_CFG_PREFIX "mux", "", MUX_TEXT, MUX_LONGTEXT, false )
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add_string( SOUT_CFG_PREFIX "dst", "", DEST_TEXT, DEST_LONGTEXT, false )
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add_string( SOUT_CFG_PREFIX "bind", "", BIND_TEXT, BIND_LONGTEXT, false )
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add_string( SOUT_CFG_PREFIX "path", "", PATH_TEXT, PATH_LONGTEXT, false )
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add_bool( SOUT_CFG_PREFIX "sap", false, SAP_TEXT, SAP_LONGTEXT, true )
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add_string( SOUT_CFG_PREFIX "name", "", NAME_TEXT, NAME_LONGTEXT, true )
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add_obsolete_string( SOUT_CFG_PREFIX "group" ) /* since 2.1.0 */
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add_string( SOUT_CFG_PREFIX "description", "", DESC_TEXT, DESC_LONGTEXT, true )
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add_string( SOUT_CFG_PREFIX "url", "", URL_TEXT, URL_LONGTEXT, true )
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add_string( SOUT_CFG_PREFIX "email", "", EMAIL_TEXT, EMAIL_LONGTEXT, true )
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add_obsolete_string( SOUT_CFG_PREFIX "phone" ) /* since 3.0.0 */
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set_callbacks( Open, Close )
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vlc_module_end ()
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/*****************************************************************************
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* Exported prototypes
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*****************************************************************************/
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static const char *const ppsz_sout_options[] = {
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"access", "mux", "url", "dst",
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"sap", "name", "description", "url", "email",
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"bind", "path", NULL
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};
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#define DEFAULT_PORT 1234
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typedef struct
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{
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sout_mux_t *p_mux;
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session_descriptor_t *p_session;
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} sout_stream_sys_t;
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static void *Add( sout_stream_t *p_stream, const es_format_t *p_fmt )
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{
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sout_stream_sys_t *p_sys = p_stream->p_sys;
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return sout_MuxAddStream( p_sys->p_mux, p_fmt );
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}
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static void Del( sout_stream_t *p_stream, void *id )
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{
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sout_stream_sys_t *p_sys = p_stream->p_sys;
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sout_MuxDeleteStream( p_sys->p_mux, (sout_input_t*)id );
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}
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static int Send( sout_stream_t *p_stream, void *id, block_t *p_buffer )
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{
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sout_stream_sys_t *p_sys = p_stream->p_sys;
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return sout_MuxSendBuffer( p_sys->p_mux, (sout_input_t*)id, p_buffer );
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}
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static void Flush( sout_stream_t *p_stream, void *id )
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{
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sout_stream_sys_t *p_sys = p_stream->p_sys;
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sout_MuxFlush( p_sys->p_mux, (sout_input_t*)id );
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}
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static void create_SDP(sout_stream_t *p_stream, sout_access_out_t *p_access)
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{
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sout_stream_sys_t *p_sys = p_stream->p_sys;
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static const struct addrinfo hints = {
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.ai_family = AF_UNSPEC,
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.ai_socktype = SOCK_DGRAM,
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.ai_protocol = 0,
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.ai_flags = AI_NUMERICHOST | AI_NUMERICSERV | AI_IDN,
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};
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char *shost = var_GetNonEmptyString (p_access, "src-addr");
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char *dhost = var_GetNonEmptyString (p_access, "dst-addr");
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int sport = var_GetInteger (p_access, "src-port");
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int dport = var_GetInteger (p_access, "dst-port");
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struct sockaddr_storage src, dst;
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socklen_t srclen = 0, dstlen = 0;
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struct addrinfo *res;
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if (!vlc_getaddrinfo (dhost, dport, &hints, &res))
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{
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memcpy (&dst, res->ai_addr, dstlen = res->ai_addrlen);
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freeaddrinfo (res);
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}
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if (!vlc_getaddrinfo (shost, sport, &hints, &res))
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{
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memcpy (&src, res->ai_addr, srclen = res->ai_addrlen);
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freeaddrinfo (res);
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}
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struct vlc_memstream sdp;
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if (vlc_sdp_Start(&sdp, VLC_OBJECT (p_stream), SOUT_CFG_PREFIX,
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(struct sockaddr *)&src, srclen,
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(struct sockaddr *)&dst, dstlen) == 0)
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{
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vlc_memstream_printf(&sdp, "m=video %d udp mpeg\r\n", dport);
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/* Register the SDP with the SAP thread */
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if (vlc_memstream_close(&sdp) == 0)
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{
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msg_Dbg(p_stream, "Generated SDP:\n%s", sdp.ptr);
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p_sys->p_session =
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sout_AnnounceRegisterSDP(p_stream, sdp.ptr, dhost);
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free(sdp.ptr);
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}
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}
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free(shost);
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free(dhost);
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}
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static const char *getMuxFromAlias( const char *psz_alias )
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{
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static struct { const char alias[6]; const char mux[32]; } mux_alias[] =
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{
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{ "avi", "avi" },
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{ "ogg", "ogg" },
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{ "ogm", "ogg" },
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{ "ogv", "ogg" },
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{ "flac","raw" },
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{ "mp3", "raw" },
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{ "mp4", "mp4" },
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{ "mov", "mov" },
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{ "moov","mov" },
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{ "asf", "asf" },
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{ "wma", "asf" },
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{ "wmv", "asf" },
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{ "trp", "ts" },
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{ "ts", "ts" },
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{ "mpg", "ps" },
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{ "mpeg","ps" },
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{ "ps", "ps" },
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{ "mpeg1","mpeg1" },
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{ "wav", "wav" },
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{ "flv", "avformat{mux=flv}" },
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{ "mkv", "avformat{mux=matroska}"},
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{ "webm", "avformat{mux=webm}"},
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};
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if( !psz_alias )
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return NULL;
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for( size_t i = 0; i < sizeof mux_alias / sizeof *mux_alias; i++ )
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if( !strcasecmp( psz_alias, mux_alias[i].alias ) )
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return mux_alias[i].mux;
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return NULL;
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}
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static int fixAccessMux( sout_stream_t *p_stream, char **ppsz_mux,
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char **ppsz_access, const char *psz_url )
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{
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char *psz_mux = *ppsz_mux;
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char *psz_access = *ppsz_access;
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if( !psz_mux )
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{
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const char *psz_ext = psz_url ? strrchr( psz_url, '.' ) : NULL;
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if( psz_ext )
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psz_ext++; /* use extension */
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const char *psz_mux_byext = getMuxFromAlias( psz_ext );
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if( !psz_access )
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{
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if( !psz_mux_byext )
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{
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msg_Err( p_stream, "no access _and_ no muxer" );
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return 1;
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}
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msg_Warn( p_stream,
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"no access _and_ no muxer, extension gives file/%s",
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psz_mux_byext );
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*ppsz_access = strdup("file");
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*ppsz_mux = strdup(psz_mux_byext);
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}
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else
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{
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if( !strncmp( psz_access, "mmsh", 4 ) )
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*ppsz_mux = strdup("asfh");
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else if (!strcmp (psz_access, "udp"))
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*ppsz_mux = strdup("ts");
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else if( psz_mux_byext )
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*ppsz_mux = strdup(psz_mux_byext);
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else
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{
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msg_Err( p_stream, "no mux specified or found by extension" );
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return 1;
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}
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}
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}
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else if( !psz_access )
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{
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if( !strncmp( psz_mux, "asfh", 4 ) )
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*ppsz_access = strdup("mmsh");
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else /* default file */
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*ppsz_access = strdup("file");
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}
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return 0;
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}
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static bool exactMatch( const char *psz_target, const char *psz_string,
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size_t i_len )
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{
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if ( strncmp( psz_target, psz_string, i_len ) )
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return false;
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else
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return ( psz_target[i_len] < 'a' || psz_target[i_len] > 'z' );
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}
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static void checkAccessMux( sout_stream_t *p_stream, char *psz_access,
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char *psz_mux )
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{
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if( exactMatch( psz_access, "mmsh", 4 ) && !exactMatch( psz_mux, "asfh", 4 ) )
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msg_Err( p_stream, "mmsh output is only valid with asfh mux" );
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else if( !exactMatch( psz_access, "file", 4 ) &&
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( exactMatch( psz_mux, "mov", 3 ) || exactMatch( psz_mux, "mp4", 3 ) ) )
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msg_Err( p_stream, "mov and mp4 mux are only valid with file output" );
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else if( exactMatch( psz_access, "udp", 3 ) )
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{
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if( exactMatch( psz_mux, "ffmpeg", 6 ) || exactMatch( psz_mux, "avformat", 8 ) )
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{ /* why would you use ffmpeg's ts muxer ? YOU DON'T LOVE VLC ??? */
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char *psz_ffmpeg_mux = var_CreateGetString( p_stream, "sout-avformat-mux" );
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if( !psz_ffmpeg_mux || strncmp( psz_ffmpeg_mux, "mpegts", 6 ) )
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msg_Err( p_stream, "UDP output is only valid with TS mux" );
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free( psz_ffmpeg_mux );
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}
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else if( !exactMatch( psz_mux, "ts", 2 ) )
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msg_Err( p_stream, "UDP output is only valid with TS mux" );
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}
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}
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/*****************************************************************************
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* Open:
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*****************************************************************************/
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static int Open( vlc_object_t *p_this )
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{
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sout_stream_t *p_stream = (sout_stream_t*)p_this;
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sout_stream_sys_t *p_sys;
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char *psz_mux, *psz_access, *psz_url;
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sout_access_out_t *p_access;
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int ret = VLC_EGENERIC;
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config_ChainParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options,
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p_stream->p_cfg );
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psz_mux = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
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psz_access = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "access" );
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if( !psz_access )
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psz_access = strdup(p_stream->psz_name);
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psz_url = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
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if (!psz_url)
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{
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char *psz_bind = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "bind" );
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if( psz_bind )
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{
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char *psz_path = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "path" );
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if( psz_path )
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{
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if( asprintf( &psz_url, "%s/%s", psz_bind, psz_path ) == -1 )
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psz_url = NULL;
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free(psz_bind);
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free( psz_path );
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}
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else
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psz_url = psz_bind;
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}
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}
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p_sys = p_stream->p_sys = malloc( sizeof( sout_stream_sys_t) );
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if( !p_sys )
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{
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ret = VLC_ENOMEM;
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goto end;
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}
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p_sys->p_session = NULL;
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if( fixAccessMux( p_stream, &psz_mux, &psz_access, psz_url ) )
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goto end;
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checkAccessMux( p_stream, psz_access, psz_mux );
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p_access = sout_AccessOutNew( p_stream, psz_access, psz_url );
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if( p_access == NULL )
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{
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msg_Err( p_stream, "no suitable sout access module for `%s/%s://%s'",
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psz_access, psz_mux, psz_url );
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goto end;
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}
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p_sys->p_mux = sout_MuxNew( p_stream->p_sout, psz_mux, p_access );
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if( !p_sys->p_mux )
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{
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const char *psz_mux_guess = getMuxFromAlias( psz_mux );
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if( psz_mux_guess && strcmp( psz_mux_guess, psz_mux ) )
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{
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msg_Dbg( p_stream, "Couldn't open mux `%s', trying `%s' instead",
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psz_mux, psz_mux_guess );
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p_sys->p_mux = sout_MuxNew( p_stream->p_sout, psz_mux_guess, p_access );
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}
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if( !p_sys->p_mux )
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{
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msg_Err( p_stream, "no suitable sout mux module for `%s/%s://%s'",
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psz_access, psz_mux, psz_url );
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sout_AccessOutDelete( p_access );
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goto end;
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}
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}
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if( var_GetBool( p_stream, SOUT_CFG_PREFIX"sap" ) )
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create_SDP( p_stream, p_access );
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p_stream->pf_add = Add;
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p_stream->pf_del = Del;
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p_stream->pf_send = Send;
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p_stream->pf_flush = Flush;
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if( !sout_AccessOutCanControlPace( p_access ) )
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p_stream->pace_nocontrol = true;
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ret = VLC_SUCCESS;
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msg_Dbg( p_this, "using `%s/%s://%s'", psz_access, psz_mux, psz_url );
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end:
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if( ret != VLC_SUCCESS )
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free( p_sys );
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free( psz_access );
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free( psz_mux );
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free( psz_url );
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return ret;
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}
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/*****************************************************************************
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* Close:
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*****************************************************************************/
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static void Close( vlc_object_t * p_this )
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{
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sout_stream_t *p_stream = (sout_stream_t*)p_this;
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sout_stream_sys_t *p_sys = p_stream->p_sys;
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sout_access_out_t *p_access = p_sys->p_mux->p_access;
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if( p_sys->p_session != NULL )
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sout_AnnounceUnRegister( p_stream, p_sys->p_session );
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sout_MuxDelete( p_sys->p_mux );
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sout_AccessOutDelete( p_access );
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free( p_sys );
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}
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