modules/mux/dummy.c

   1 /*****************************************************************************
   2  * dummy.c: dummy muxer module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2001, 2002 VLC authors and VideoLAN
   5  *
   6  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   7  *          Eric Petit <titer@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * 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_sout.h>
  35 #include <vlc_block.h>
  36
  37 /*****************************************************************************
  38  * Module descriptor
  39  *****************************************************************************/
  40 static int  Open   ( vlc_object_t * );
  41 static void Close  ( vlc_object_t * );
  42
  43 vlc_module_begin ()
  44     set_description( N_("Dummy/Raw muxer") )
  45     set_capability( "sout mux", 5 )
  46     set_category( CAT_SOUT )
  47     set_subcategory( SUBCAT_SOUT_MUX )
  48     add_shortcut( "dummy", "raw", "es" )
  49     set_callbacks( Open, Close )
  50 vlc_module_end ()
  51
  52 /*****************************************************************************
  53  * Exported prototypes
  54  *****************************************************************************/
  55 static int Control( sout_mux_t *, int, va_list );
  56 static int AddStream( sout_mux_t *, sout_input_t * );
  57 static void DelStream( sout_mux_t *, sout_input_t * );
  58 static int Mux      ( sout_mux_t * );
  59
  60 typedef struct
  61 {
  62     /* Some streams have special initialization data, we'll output this
  63      * data as an header in the stream. */
  64     bool b_header;
  65 } sout_mux_sys_t;
  66
  67 /*****************************************************************************
  68  * Open:
  69  *****************************************************************************/
  70 static int Open( vlc_object_t *p_this )
  71 {
  72     sout_mux_t *p_mux = (sout_mux_t*)p_this;
  73     sout_mux_sys_t  *p_sys;
  74
  75     msg_Dbg( p_mux, "Dummy/Raw muxer opened" );
  76     msg_Info( p_mux, "Open" );
  77
  78     p_mux->pf_control   = Control;
  79     p_mux->pf_addstream = AddStream;
  80     p_mux->pf_delstream = DelStream;
  81     p_mux->pf_mux       = Mux;
  82
  83     p_mux->p_sys = p_sys = malloc( sizeof( sout_mux_sys_t ) );
  84     if( !p_sys )
  85         return VLC_ENOMEM;
  86     p_sys->b_header      = true;
  87
  88     return VLC_SUCCESS;
  89 }
  90
  91 /*****************************************************************************
  92  * Close:
  93  *****************************************************************************/
  94
  95 static void Close( vlc_object_t * p_this )
  96 {
  97     sout_mux_t *p_mux = (sout_mux_t*)p_this;
  98     sout_mux_sys_t *p_sys = p_mux->p_sys;
  99
 100     msg_Dbg( p_mux, "Dummy/Raw muxer closed" );
 101     free( p_sys );
 102 }
 103
 104 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
 105 {
 106     VLC_UNUSED(p_mux);
 107     bool *pb_bool;
 108
 109     switch( i_query )
 110     {
 111         case MUX_CAN_ADD_STREAM_WHILE_MUXING:
 112             pb_bool = va_arg( args, bool * );
 113             *pb_bool = true;
 114             return VLC_SUCCESS;
 115
 116         case MUX_GET_MIME:   /* Unknown */
 117         default:
 118             return VLC_EGENERIC;
 119    }
 120 }
 121
 122 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
 123 {
 124     VLC_UNUSED(p_input);
 125     msg_Dbg( p_mux, "adding input" );
 126     return VLC_SUCCESS;
 127 }
 128
 129 static void DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
 130 {
 131     VLC_UNUSED(p_input);
 132     msg_Dbg( p_mux, "removing input" );
 133 }
 134
 135 static int Mux( sout_mux_t *p_mux )
 136 {
 137     sout_mux_sys_t *p_sys = p_mux->p_sys;
 138     int i;
 139
 140     for( i = 0; i < p_mux->i_nb_inputs; i++ )
 141     {
 142         block_fifo_t *p_fifo;
 143         int i_count;
 144
 145         if( p_sys->b_header && p_mux->pp_inputs[i]->p_fmt->i_extra )
 146         {
 147             /* Write header data */
 148             block_t *p_data;
 149             p_data = block_Alloc( p_mux->pp_inputs[i]->p_fmt->i_extra );
 150
 151             memcpy( p_data->p_buffer, p_mux->pp_inputs[i]->p_fmt->p_extra,
 152                     p_mux->pp_inputs[i]->p_fmt->i_extra );
 153
 154             p_data->i_flags |= BLOCK_FLAG_HEADER;
 155
 156             msg_Dbg( p_mux, "writing header data" );
 157             sout_AccessOutWrite( p_mux->p_access, p_data );
 158         }
 159
 160         p_fifo = p_mux->pp_inputs[i]->p_fifo;
 161         i_count = block_FifoCount( p_fifo );
 162         while( i_count > 0 )
 163         {
 164             block_t *p_data = block_FifoGet( p_fifo );
 165
 166             sout_AccessOutWrite( p_mux->p_access, p_data );
 167
 168             i_count--;
 169         }
 170     }
 171     p_sys->b_header = false;
 172
 173     return VLC_SUCCESS;
 174 }