modules/misc/stats/demux.c

   1 /*****************************************************************************
   2  * demux.c: stats demux plugin
   3  *****************************************************************************
   4  * Copyright (C) 2001-2008 the VideoLAN team
   5  *
   6  * Authors: Samuel Hocevar <sam@zoy.org>
   7  *          Pierre d'Herbemont <pdherbemont@videolan.org>
   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_interface.h>
  34 #include <vlc_access.h>
  35 #include <vlc_demux.h>
  36
  37 #include "stats.h"
  38
  39
  40 /*****************************************************************************
  41  * Demux
  42  *****************************************************************************/
  43
  44
  45 struct demux_sys_t
  46 {
  47     es_format_t     fmt;
  48     es_out_id_t     *p_es;
  49
  50     date_t          pts;
  51 };
  52
  53 static int Demux( demux_t * );
  54 static int DemuxControl( demux_t *, int, va_list );
  55
  56
  57 /*****************************************************************************
  58  * OpenDemux
  59  *****************************************************************************/
  60 int OpenDemux ( vlc_object_t *p_this )
  61 {
  62     demux_t *p_demux = (demux_t*)p_this;
  63     demux_sys_t *p_sys;
  64
  65     p_demux->p_sys = NULL;
  66
  67     /* Only when selected */
  68     if( *p_demux->psz_demux == '\0' )
  69         return VLC_EGENERIC;
  70
  71     msg_Dbg( p_demux, "Init Stat demux" );
  72
  73     p_demux->pf_demux   = Demux;
  74     p_demux->pf_control = DemuxControl;
  75
  76     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
  77     if( !p_demux->p_sys )
  78         return VLC_ENOMEM;
  79
  80     date_Init( &p_sys->pts, 1, 1 );
  81     date_Set( &p_sys->pts, 1 );
  82
  83     es_format_Init( &p_sys->fmt, VIDEO_ES, VLC_FOURCC('s','t','a','t') );
  84     p_sys->fmt.video.i_width = 720;
  85     p_sys->fmt.video.i_height= 480;
  86
  87     p_sys->p_es = es_out_Add( p_demux->out, &p_sys->fmt );
  88
  89     return VLC_SUCCESS;
  90 }
  91
  92 /*****************************************************************************
  93  * CloseDemux
  94  *****************************************************************************/
  95 void CloseDemux ( vlc_object_t *p_this )
  96 {
  97     demux_t *p_demux = (demux_t*)p_this;
  98
  99     msg_Dbg( p_demux, "Closing Stat demux" );
 100
 101     free( p_demux->p_sys );
 102 }
 103
 104 /*****************************************************************************
 105  * Demux
 106  *****************************************************************************/
 107 static int Demux( demux_t *p_demux )
 108 {
 109     demux_sys_t *p_sys = p_demux->p_sys;
 110
 111     block_t * p_block = stream_Block( p_demux->s, kBufferSize );
 112
 113     if( !p_block ) return 1;
 114
 115     p_block->i_dts = p_block->i_pts =
 116         date_Increment( &p_sys->pts, kBufferSize );
 117
 118     msg_Dbg( p_demux, "demux got %d ms offset", (int)(mdate() - *(mtime_t *)p_block->p_buffer) / 1000 );
 119
 120     //es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
 121
 122     es_out_Send( p_demux->out, p_sys->p_es, p_block );
 123
 124     return 1;
 125 }
 126
 127 static int DemuxControl( demux_t *p_demux, int i_query, va_list args )
 128 {
 129     return demux_vaControlHelper( p_demux->s,
 130                                    0, 0, 0, 1,
 131                                    i_query, args );
 132 }