es.c
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上传日期:2009-03-27
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- /*****************************************************************************
- * es.c: Elementary stream output module
- *****************************************************************************
- * Copyright (C) 2003-2004 VideoLAN
- * $Id: es.c 8162 2004-07-10 17:20:59Z fenrir $
- *
- * 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 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #include <stdlib.h>
- #include <string.h>
- #include <vlc/vlc.h>
- #include <vlc/input.h>
- #include <vlc/sout.h>
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- #define ACCESS_TEXT N_("Output access method")
- #define ACCESS_LONGTEXT N_(
- "Allows you to specify the output access method used for the streaming "
- "output." )
- #define ACCESSA_TEXT N_("Audio output access method")
- #define ACCESSA_LONGTEXT N_(
- "Allows you to specify the output access method used for the audio "
- "streaming output." )
- #define ACCESSV_TEXT N_("Video output access method")
- #define ACCESSV_LONGTEXT N_(
- "Allows you to specify the output access method used for the video "
- "streaming output." )
- #define MUX_TEXT N_("Output muxer")
- #define MUX_LONGTEXT N_(
- "Allows you to specify the muxer used for the streaming output." )
- #define MUXA_TEXT N_("Audio output muxer")
- #define MUXA_LONGTEXT N_(
- "Allows you to specify the muxer used for the audio streaming output." )
- #define MUXV_TEXT N_("Video output muxer")
- #define MUXV_LONGTEXT N_(
- "Allows you to specify the muxer used for the video streaming output." )
- #define DEST_TEXT N_("Output URL")
- #define DEST_LONGTEXT N_(
- "Allows you to specify the output URL used for the streaming output." )
- #define DESTA_TEXT N_("Audio output URL")
- #define DESTA_LONGTEXT N_(
- "Allows you to specify the output URL used for the audio streaming "
- "output." )
- #define DESTV_TEXT N_("Video output URL")
- #define DESTV_LONGTEXT N_(
- "Allows you to specify the output URL used for the video streaming "
- "output." )
- static int Open ( vlc_object_t * );
- static void Close ( vlc_object_t * );
- #define SOUT_CFG_PREFIX "sout-es-"
- vlc_module_begin();
- set_description( _("Elementary stream output") );
- set_capability( "sout stream", 50 );
- add_shortcut( "es" );
- add_string( SOUT_CFG_PREFIX "access", "", NULL, ACCESS_TEXT,
- ACCESS_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "access-audio", "", NULL, ACCESSA_TEXT,
- ACCESSA_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "access-video", "", NULL, ACCESSV_TEXT,
- ACCESSV_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
- MUX_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "mux-audio", "", NULL, MUXA_TEXT,
- MUXA_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "mux-video", "", NULL, MUXV_TEXT,
- MUXV_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "dst", "", NULL, DEST_TEXT,
- DEST_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "dst-audio", "", NULL, DESTA_TEXT,
- DESTA_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "dst-video", "", NULL, DESTV_TEXT,
- DESTV_LONGTEXT, VLC_TRUE );
- set_callbacks( Open, Close );
- vlc_module_end();
- #define FREE( p ) if( p ) { free( p ); (p) = NULL; }
- /*****************************************************************************
- * Exported prototypes
- *****************************************************************************/
- static const char *ppsz_sout_options[] = {
- "access", "access-audio", "access-video",
- "mux", "mux-audio", "mux-video",
- "dst", "dst-audio", "dst-video",
- NULL
- };
- static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
- static int Del ( sout_stream_t *, sout_stream_id_t * );
- static int Send( sout_stream_t *, sout_stream_id_t *, block_t* );
- struct sout_stream_sys_t
- {
- int i_count_audio;
- int i_count_video;
- int i_count;
- char *psz_mux;
- char *psz_mux_audio;
- char *psz_mux_video;
- char *psz_access;
- char *psz_access_audio;
- char *psz_access_video;
- char *psz_dst;
- char *psz_dst_audio;
- char *psz_dst_video;
- };
- /*****************************************************************************
- * Open:
- *****************************************************************************/
- static int Open( vlc_object_t *p_this )
- {
- sout_stream_t *p_stream = (sout_stream_t*)p_this;
- sout_stream_sys_t *p_sys;
- vlc_value_t val;
- sout_CfgParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options, p_stream->p_cfg );
- p_sys = malloc( sizeof( sout_stream_sys_t ) );
- p_sys->i_count = 0;
- p_sys->i_count_audio = 0;
- p_sys->i_count_video = 0;
- var_Get( p_stream, SOUT_CFG_PREFIX "access", &val );
- p_sys->psz_access = val.psz_string;
- var_Get( p_stream, SOUT_CFG_PREFIX "access-audio", &val );
- p_sys->psz_access_audio = val.psz_string;
- var_Get( p_stream, SOUT_CFG_PREFIX "access-video", &val );
- p_sys->psz_access_video = val.psz_string;
- var_Get( p_stream, SOUT_CFG_PREFIX "mux", &val );
- p_sys->psz_mux = val.psz_string;
- var_Get( p_stream, SOUT_CFG_PREFIX "mux-audio", &val );
- p_sys->psz_mux_audio = val.psz_string;
- var_Get( p_stream, SOUT_CFG_PREFIX "mux-video", &val );
- p_sys->psz_mux_video = val.psz_string;
- var_Get( p_stream, SOUT_CFG_PREFIX "dst", &val );
- p_sys->psz_dst = val.psz_string;
- var_Get( p_stream, SOUT_CFG_PREFIX "dst-audio", &val );
- p_sys->psz_dst_audio = val.psz_string;
- var_Get( p_stream, SOUT_CFG_PREFIX "dst-video", &val );
- p_sys->psz_dst_video = val.psz_string;
- p_stream->pf_add = Add;
- p_stream->pf_del = Del;
- p_stream->pf_send = Send;
- p_stream->p_sys = p_sys;
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Close:
- *****************************************************************************/
- static void Close( vlc_object_t * p_this )
- {
- sout_stream_t *p_stream = (sout_stream_t*)p_this;
- sout_stream_sys_t *p_sys = p_stream->p_sys;
- free( p_sys->psz_access );
- free( p_sys->psz_access_audio );
- free( p_sys->psz_access_video );
- free( p_sys->psz_mux );
- free( p_sys->psz_mux_audio );
- free( p_sys->psz_mux_video );
- free( p_sys->psz_dst );
- free( p_sys->psz_dst_audio );
- free( p_sys->psz_dst_video );
- free( p_sys );
- }
- struct sout_stream_id_t
- {
- sout_input_t *p_input;
- sout_mux_t *p_mux;
- };
- static char * es_print_url( char *psz_fmt, vlc_fourcc_t i_fourcc, int i_count,
- char *psz_access, char *psz_mux )
- {
- char *psz_dst, *p;
- if( psz_fmt == NULL || !*psz_fmt )
- {
- psz_fmt = "stream-%n-%c.%m";
- }
- p = psz_dst = malloc( 4096 );
- memset( p, 0, 4096 );
- for( ;; )
- {
- if( *psz_fmt == ' ' )
- {
- *p = ' ';
- break;
- }
- if( *psz_fmt != '%' )
- {
- *p++ = *psz_fmt++;
- }
- else
- {
- if( psz_fmt[1] == 'n' )
- {
- p += sprintf( p, "%d", i_count );
- }
- else if( psz_fmt[1] == 'c' )
- {
- p += sprintf( p, "%4.4s", (char*)&i_fourcc );
- }
- else if( psz_fmt[1] == 'm' )
- {
- p += sprintf( p, "%s", psz_mux );
- }
- else if( psz_fmt[1] == 'a' )
- {
- p += sprintf( p, "%s", psz_access );
- }
- else if( psz_fmt[1] != ' ' )
- {
- p += sprintf( p, "%c%c", psz_fmt[0], psz_fmt[1] );
- }
- else
- {
- p += sprintf( p, "%c", psz_fmt[0] );
- *p++ = ' ';
- break;
- }
- psz_fmt += 2;
- }
- }
- return( psz_dst );
- }
- static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
- {
- sout_stream_sys_t *p_sys = p_stream->p_sys;
- sout_instance_t *p_sout = p_stream->p_sout;
- sout_stream_id_t *id;
- char *psz_access;
- char *psz_mux;
- char *psz_dst;
- sout_access_out_t *p_access;
- sout_mux_t *p_mux;
- /* *** get access name *** */
- if( p_fmt->i_cat == AUDIO_ES && p_sys->psz_access_audio && *p_sys->psz_access_audio )
- {
- psz_access = p_sys->psz_access_audio;
- }
- else if( p_fmt->i_cat == VIDEO_ES && p_sys->psz_access_video && *p_sys->psz_access_video )
- {
- psz_access = p_sys->psz_access_video;
- }
- else
- {
- psz_access = p_sys->psz_access;
- }
- /* *** get mux name *** */
- if( p_fmt->i_cat == AUDIO_ES && p_sys->psz_mux_audio && *p_sys->psz_mux_audio )
- {
- psz_mux = p_sys->psz_mux_audio;
- }
- else if( p_fmt->i_cat == VIDEO_ES && p_sys->psz_mux_video && *p_sys->psz_mux_video )
- {
- psz_mux = p_sys->psz_mux_video;
- }
- else
- {
- psz_mux = p_sys->psz_mux;
- }
- /* Get url (%d expanded as a codec count, %c expanded as codec fcc ) */
- if( p_fmt->i_cat == AUDIO_ES && p_sys->psz_dst_audio && *p_sys->psz_dst_audio )
- {
- psz_dst = es_print_url( p_sys->psz_dst_audio, p_fmt->i_codec,
- p_sys->i_count_audio, psz_access, psz_mux );
- }
- else if( p_fmt->i_cat == VIDEO_ES && p_sys->psz_dst_video && *p_sys->psz_dst_video )
- {
- psz_dst = es_print_url( p_sys->psz_dst_video, p_fmt->i_codec,
- p_sys->i_count_video, psz_access, psz_mux );
- }
- else
- {
- int i_count;
- if( p_fmt->i_cat == VIDEO_ES )
- {
- i_count = p_sys->i_count_video;
- }
- else if( p_fmt->i_cat == AUDIO_ES )
- {
- i_count = p_sys->i_count_audio;
- }
- else
- {
- i_count = p_sys->i_count;
- }
- psz_dst = es_print_url( p_sys->psz_dst, p_fmt->i_codec,
- i_count, psz_access, psz_mux );
- }
- p_sys->i_count++;
- if( p_fmt->i_cat == VIDEO_ES )
- {
- p_sys->i_count_video++;
- }
- else if( p_fmt->i_cat == AUDIO_ES )
- {
- p_sys->i_count_audio++;
- }
- msg_Dbg( p_stream, "creating `%s/%s://%s'",
- psz_access, psz_mux, psz_dst );
- /* *** find and open appropriate access module *** */
- p_access = sout_AccessOutNew( p_sout, psz_access, psz_dst );
- if( p_access == NULL )
- {
- msg_Err( p_stream, "no suitable sout access module for `%s/%s://%s'",
- psz_access, psz_mux, psz_dst );
- return( NULL );
- }
- /* *** find and open appropriate mux module *** */
- p_mux = sout_MuxNew( p_sout, psz_mux, p_access );
- if( p_mux == NULL )
- {
- msg_Err( p_stream, "no suitable sout mux module for `%s/%s://%s'",
- psz_access, psz_mux, psz_dst );
- sout_AccessOutDelete( p_access );
- return( NULL );
- }
- id = malloc( sizeof( sout_stream_id_t ) );
- id->p_mux = p_mux;
- id->p_input = sout_MuxAddStream( p_mux, p_fmt );
- if( id->p_input == NULL )
- {
- free( id );
- sout_MuxDelete( p_mux );
- sout_AccessOutDelete( p_access );
- free( id );
- return NULL;
- }
- return id;
- }
- static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
- {
- sout_access_out_t *p_access = id->p_mux->p_access;
- sout_MuxDeleteStream( id->p_mux, id->p_input );
- sout_AccessOutDelete( p_access );
- free( id );
- return VLC_SUCCESS;
- }
- static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
- block_t *p_buffer )
- {
- sout_MuxSendBuffer( id->p_mux, id->p_input, p_buffer );
- return VLC_SUCCESS;
- }