modules/stream_out/es.c

   1 /*****************************************************************************
   2  * es.c: Elementary stream output module
   3  *****************************************************************************
   4  * Copyright (C) 2003-2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc_common.h>
  33 #include <vlc_plugin.h>
  34 #include <vlc_input.h>
  35 #include <vlc_sout.h>
  36 #include <vlc_dialog.h>
  37
  38 /*****************************************************************************
  39  * Module descriptor
  40  *****************************************************************************/
  41 #define ACCESS_TEXT N_("Output access method")
  42 #define ACCESS_LONGTEXT N_( \
  43     "This is the default output access method that will be used." )
  44
  45 #define ACCESSA_TEXT N_("Audio output access method")
  46 #define ACCESSA_LONGTEXT N_( \
  47     "This is the output access method that will be used for audio." )
  48 #define ACCESSV_TEXT N_("Video output access method")
  49 #define ACCESSV_LONGTEXT N_( \
  50     "This is the output access method that will be used for video." )
  51
  52 #define MUX_TEXT N_("Output muxer")
  53 #define MUX_LONGTEXT N_( \
  54     "This is the default muxer method that will be used." )
  55 #define MUXA_TEXT N_("Audio output muxer")
  56 #define MUXA_LONGTEXT N_( \
  57     "This is the muxer that will be used for audio." )
  58 #define MUXV_TEXT N_("Video output muxer")
  59 #define MUXV_LONGTEXT N_( \
  60     "This is the muxer that will be used for video." )
  61
  62 #define DEST_TEXT N_("Output URL")
  63 #define DEST_LONGTEXT N_( \
  64     "This is the default output URI." )
  65 #define DESTA_TEXT N_("Audio output URL")
  66 #define DESTA_LONGTEXT N_( \
  67     "This is the output URI that will be used for audio." )
  68 #define DESTV_TEXT N_("Video output URL")
  69 #define DESTV_LONGTEXT N_( \
  70     "This is the output URI that will be used for video." )
  71
  72 static int      Open    ( vlc_object_t * );
  73 static void     Close   ( vlc_object_t * );
  74
  75 #define SOUT_CFG_PREFIX "sout-es-"
  76
  77 vlc_module_begin ()
  78     set_shortname( "ES" )
  79     set_description( N_("Elementary stream output") )
  80     set_capability( "sout stream", 50 )
  81     add_shortcut( "es" )
  82     set_category( CAT_SOUT )
  83     set_subcategory( SUBCAT_SOUT_STREAM )
  84
  85     set_section( N_("Generic"), NULL )
  86     add_string( SOUT_CFG_PREFIX "access", "", NULL, ACCESS_TEXT,
  87                 ACCESS_LONGTEXT, true )
  88     add_string( SOUT_CFG_PREFIX "mux", "", NULL, MUX_TEXT,
  89                 MUX_LONGTEXT, true )
  90     add_string( SOUT_CFG_PREFIX "dst", "", NULL, DEST_TEXT,
  91                 DEST_LONGTEXT, true )
  92
  93     set_section( N_("Audio"), NULL )
  94     add_string( SOUT_CFG_PREFIX "access-audio", "", NULL, ACCESSA_TEXT,
  95                 ACCESSA_LONGTEXT, true )
  96     add_string( SOUT_CFG_PREFIX "mux-audio", "", NULL, MUXA_TEXT,
  97                 MUXA_LONGTEXT, true )
  98     add_string( SOUT_CFG_PREFIX "dst-audio", "", NULL, DESTA_TEXT,
  99                 DESTA_LONGTEXT, true )
 100
 101     set_section( N_("Video"), NULL )
 102     add_string( SOUT_CFG_PREFIX "access-video", "", NULL, ACCESSV_TEXT,
 103                 ACCESSV_LONGTEXT, true )
 104     add_string( SOUT_CFG_PREFIX "mux-video", "", NULL, MUXV_TEXT,
 105                 MUXV_LONGTEXT, true )
 106     add_string( SOUT_CFG_PREFIX "dst-video", "", NULL, DESTV_TEXT,
 107                 DESTV_LONGTEXT, true )
 108
 109     set_callbacks( Open, Close )
 110 vlc_module_end ()
 111
 112 /*****************************************************************************
 113  * Exported prototypes
 114  *****************************************************************************/
 115 static const char *const ppsz_sout_options[] = {
 116     "access", "access-audio", "access-video",
 117     "mux", "mux-audio", "mux-video",
 118     "dst", "dst-audio", "dst-video",
 119     NULL
 120 };
 121
 122 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
 123 static int               Del ( sout_stream_t *, sout_stream_id_t * );
 124 static int               Send( sout_stream_t *, sout_stream_id_t *, block_t* );
 125
 126 struct sout_stream_sys_t
 127 {
 128     int  i_count_audio;
 129     int  i_count_video;
 130     int  i_count;
 131
 132     char *psz_mux;
 133     char *psz_mux_audio;
 134     char *psz_mux_video;
 135
 136     char *psz_access;
 137     char *psz_access_audio;
 138     char *psz_access_video;
 139
 140     char *psz_dst;
 141     char *psz_dst_audio;
 142     char *psz_dst_video;
 143 };
 144
 145 /*****************************************************************************
 146  * Open:
 147  *****************************************************************************/
 148 static int Open( vlc_object_t *p_this )
 149 {
 150     sout_stream_t       *p_stream = (sout_stream_t*)p_this;
 151     sout_stream_sys_t   *p_sys;
 152
 153     config_ChainParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options, p_stream->p_cfg );
 154     p_sys                   = malloc( sizeof( sout_stream_sys_t ) );
 155
 156     p_sys->i_count          = 0;
 157     p_sys->i_count_audio    = 0;
 158     p_sys->i_count_video    = 0;
 159
 160     p_sys->psz_access = var_GetString( p_stream, SOUT_CFG_PREFIX "access" );
 161     p_sys->psz_access_audio = var_GetString( p_stream, SOUT_CFG_PREFIX "access-audio" );
 162     p_sys->psz_access_video = var_GetString( p_stream, SOUT_CFG_PREFIX "access-video" );
 163
 164     p_sys->psz_mux = var_GetString( p_stream, SOUT_CFG_PREFIX "mux" );
 165     p_sys->psz_mux_audio = var_GetString( p_stream, SOUT_CFG_PREFIX "mux-audio" );
 166     p_sys->psz_mux_video = var_GetString( p_stream, SOUT_CFG_PREFIX "mux-video" );
 167
 168     p_sys->psz_dst       = var_GetString( p_stream, SOUT_CFG_PREFIX "dst" );
 169     p_sys->psz_dst_audio = var_GetString( p_stream, SOUT_CFG_PREFIX "dst-audio" );
 170     p_sys->psz_dst_video = var_GetString( p_stream, SOUT_CFG_PREFIX "dst-video" );
 171
 172     p_stream->pf_add    = Add;
 173     p_stream->pf_del    = Del;
 174     p_stream->pf_send   = Send;
 175
 176     p_stream->p_sys     = p_sys;
 177
 178     return VLC_SUCCESS;
 179 }
 180
 181 /*****************************************************************************
 182  * Close:
 183  *****************************************************************************/
 184
 185 static void Close( vlc_object_t * p_this )
 186 {
 187     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 188     sout_stream_sys_t *p_sys = p_stream->p_sys;
 189
 190     free( p_sys->psz_access );
 191     free( p_sys->psz_access_audio );
 192     free( p_sys->psz_access_video );
 193
 194     free( p_sys->psz_mux );
 195     free( p_sys->psz_mux_audio );
 196     free( p_sys->psz_mux_video );
 197
 198     free( p_sys->psz_dst );
 199     free( p_sys->psz_dst_audio );
 200     free( p_sys->psz_dst_video );
 201
 202     free( p_sys );
 203 }
 204
 205 struct sout_stream_id_t
 206 {
 207     sout_input_t *p_input;
 208     sout_mux_t   *p_mux;
 209 };
 210
 211 static char * es_print_url( const char *psz_fmt, vlc_fourcc_t i_fourcc, int i_count,
 212                             const char *psz_access, const char *psz_mux )
 213 {
 214     char *psz_dst, *p;
 215
 216     if( psz_fmt == NULL || !*psz_fmt )
 217     {
 218         psz_fmt = (char*)"stream-%n-%c.%m";
 219     }
 220
 221     p = psz_dst = malloc( 4096 );
 222     if( !psz_dst )
 223         return NULL;
 224     memset( p, 0, 4096 );
 225     for( ;; )
 226     {
 227         if( *psz_fmt == '\0' )
 228         {
 229             *p = '\0';
 230             break;
 231         }
 232
 233         if( *psz_fmt != '%' )
 234         {
 235             *p++ = *psz_fmt++;
 236         }
 237         else
 238         {
 239             if( psz_fmt[1] == 'n' )
 240             {
 241                 p += sprintf( p, "%d", i_count );
 242             }
 243             else if( psz_fmt[1] == 'c' )
 244             {
 245                 p += sprintf( p, "%4.4s", (char*)&i_fourcc );
 246             }
 247             else if( psz_fmt[1] == 'm' )
 248             {
 249                 p += sprintf( p, "%s", psz_mux );
 250             }
 251             else if( psz_fmt[1] == 'a' )
 252             {
 253                 p += sprintf( p, "%s", psz_access );
 254             }
 255             else if( psz_fmt[1] != '\0' )
 256             {
 257                 p += sprintf( p, "%c%c", psz_fmt[0], psz_fmt[1] );
 258             }
 259             else
 260             {
 261                 p += sprintf( p, "%c", psz_fmt[0] );
 262                 *p++ = '\0';
 263                 break;
 264             }
 265             psz_fmt += 2;
 266         }
 267     }
 268
 269     return( psz_dst );
 270 }
 271
 272 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 273 {
 274     sout_stream_sys_t *p_sys = p_stream->p_sys;
 275     sout_instance_t   *p_sout = p_stream->p_sout;
 276     sout_stream_id_t  *id;
 277
 278     const char        *psz_access;
 279     const char        *psz_mux;
 280     char              *psz_dst;
 281
 282     sout_access_out_t *p_access;
 283     sout_mux_t        *p_mux;
 284
 285     /* *** get access name *** */
 286     if( p_fmt->i_cat == AUDIO_ES && p_sys->psz_access_audio && *p_sys->psz_access_audio )
 287     {
 288         psz_access = p_sys->psz_access_audio;
 289     }
 290     else if( p_fmt->i_cat == VIDEO_ES && p_sys->psz_access_video && *p_sys->psz_access_video )
 291     {
 292         psz_access = p_sys->psz_access_video;
 293     }
 294     else
 295     {
 296         psz_access = p_sys->psz_access;
 297     }
 298
 299     /* *** get mux name *** */
 300     if( p_fmt->i_cat == AUDIO_ES && p_sys->psz_mux_audio && *p_sys->psz_mux_audio )
 301     {
 302         psz_mux = p_sys->psz_mux_audio;
 303     }
 304     else if( p_fmt->i_cat == VIDEO_ES && p_sys->psz_mux_video && *p_sys->psz_mux_video )
 305     {
 306         psz_mux = p_sys->psz_mux_video;
 307     }
 308     else
 309     {
 310         psz_mux = p_sys->psz_mux;
 311     }
 312
 313     /* Get url (%d expanded as a codec count, %c expanded as codec fcc ) */
 314     if( p_fmt->i_cat == AUDIO_ES && p_sys->psz_dst_audio && *p_sys->psz_dst_audio )
 315     {
 316         psz_dst = es_print_url( p_sys->psz_dst_audio, p_fmt->i_codec,
 317                                 p_sys->i_count_audio, psz_access, psz_mux );
 318     }
 319     else if( p_fmt->i_cat == VIDEO_ES && p_sys->psz_dst_video && *p_sys->psz_dst_video )
 320     {
 321         psz_dst = es_print_url( p_sys->psz_dst_video, p_fmt->i_codec,
 322                                 p_sys->i_count_video, psz_access, psz_mux );
 323     }
 324     else
 325     {
 326         int i_count;
 327         if( p_fmt->i_cat == VIDEO_ES )
 328         {
 329             i_count = p_sys->i_count_video;
 330         }
 331         else if( p_fmt->i_cat == AUDIO_ES )
 332         {
 333             i_count = p_sys->i_count_audio;
 334         }
 335         else
 336         {
 337             i_count = p_sys->i_count;
 338         }
 339
 340         psz_dst = es_print_url( p_sys->psz_dst, p_fmt->i_codec,
 341                                 i_count, psz_access, psz_mux );
 342     }
 343
 344     p_sys->i_count++;
 345     if( p_fmt->i_cat == VIDEO_ES )
 346     {
 347         p_sys->i_count_video++;
 348     }
 349     else if( p_fmt->i_cat == AUDIO_ES )
 350     {
 351         p_sys->i_count_audio++;
 352     }
 353     msg_Dbg( p_stream, "creating `%s/%s://%s'",
 354              psz_access, psz_mux, psz_dst );
 355
 356     /* *** find and open appropriate access module *** */
 357     p_access = sout_AccessOutNew( p_sout, psz_access, psz_dst );
 358     if( p_access == NULL )
 359     {
 360         msg_Err( p_stream, "no suitable sout access module for `%s/%s://%s'",
 361                  psz_access, psz_mux, psz_dst );
 362         dialog_Fatal( p_stream,
 363                     _("Streaming / Transcoding failed"),
 364                     _("There is no suitable stream-output access module for \"%s/%s://%s\"."),
 365                           psz_access,
 366                           psz_mux, psz_dst );
 367         free( psz_dst );
 368         return( NULL );
 369     }
 370
 371     /* *** find and open appropriate mux module *** */
 372     p_mux = sout_MuxNew( p_sout, psz_mux, p_access );
 373     if( p_mux == NULL )
 374     {
 375         msg_Err( p_stream, "no suitable sout mux module for `%s/%s://%s'",
 376                  psz_access, psz_mux, psz_dst );
 377         dialog_Fatal( p_stream,
 378                         _("Streaming / Transcoding failed"),
 379                         _("There is no suitable stream-output access module "\
 380                           "for \"%s/%s://%s\"."),
 381                           psz_access, psz_mux, psz_dst );
 382         sout_AccessOutDelete( p_access );
 383         free( psz_dst );
 384         return( NULL );
 385     }
 386     free( psz_dst );
 387
 388     id = malloc( sizeof( sout_stream_id_t ) );
 389     if( !id )
 390     {
 391         sout_MuxDelete( p_mux );
 392         sout_AccessOutDelete( p_access );
 393         return NULL;
 394     }
 395     id->p_mux = p_mux;
 396     id->p_input = sout_MuxAddStream( p_mux, p_fmt );
 397
 398     if( id->p_input == NULL )
 399     {
 400         sout_MuxDelete( p_mux );
 401         sout_AccessOutDelete( p_access );
 402         free( id );
 403         return NULL;
 404     }
 405
 406     if( !sout_AccessOutCanControlPace( p_access ) )
 407         p_sout->i_out_pace_nocontrol++;
 408
 409     return id;
 410 }
 411
 412 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
 413 {
 414     VLC_UNUSED(p_stream);
 415     sout_access_out_t *p_access = id->p_mux->p_access;
 416
 417     sout_MuxDeleteStream( id->p_mux, id->p_input );
 418     sout_MuxDelete( id->p_mux );
 419     if( !sout_AccessOutCanControlPace( p_access ) )
 420         p_stream->p_sout->i_out_pace_nocontrol--;
 421     sout_AccessOutDelete( p_access );
 422
 423     free( id );
 424     return VLC_SUCCESS;
 425 }
 426
 427 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 428                  block_t *p_buffer )
 429 {
 430     VLC_UNUSED(p_stream);
 431     sout_MuxSendBuffer( id->p_mux, id->p_input, p_buffer );
 432
 433     return VLC_SUCCESS;
 434 }
 435