git.sesse.net Git - vlc/blob - src/input/input_ext-intf.c

   1 /*****************************************************************************
   2  * input_ext-intf.c: services to the interface
   3  *****************************************************************************
   4  * Copyright (C) 1998, 1999, 2000 VideoLAN
   5  *
   6  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26 #include "defs.h"
  27
  28 #include "config.h"
  29 #include "common.h"
  30 #include "threads.h"
  31 #include "mtime.h"
  32
  33 #include "intf_msg.h"
  34
  35 #include "stream_control.h"
  36 #include "input_ext-dec.h"
  37 #include "input_ext-intf.h"
  38
  39 #include "input.h"
  40
  41 /*****************************************************************************
  42  * input_SetRate: change the reading pace
  43  *****************************************************************************/
  44 void input_SetRate( input_thread_t * p_input, int i_mode )
  45 {
  46     vlc_mutex_lock( &p_input->stream.stream_lock );
  47
  48     switch( i_mode )
  49     {
  50     case INPUT_RATE_PLAY:
  51         p_input->stream.i_new_status = PLAYING_S;
  52         intf_Msg( "input: playing at normal rate" );
  53         break;
  54
  55     case INPUT_RATE_PAUSE:
  56         /* XXX: we don't need to check i_status, because input_clock.c
  57          * does it for us */
  58         p_input->stream.i_new_status = PAUSE_S;
  59         intf_Msg( "input: toggling pause" );
  60         break;
  61
  62     case INPUT_RATE_FASTER:
  63         /* If we are already going too fast, go back to default rate */
  64         if( p_input->stream.control.i_rate * 8 <= DEFAULT_RATE )
  65         {
  66             p_input->stream.i_new_status = PLAYING_S;
  67             intf_Msg( "input: playing at normal rate" );
  68         }
  69         else
  70         {
  71             p_input->stream.i_new_status = FORWARD_S;
  72
  73             if( p_input->stream.control.i_rate < DEFAULT_RATE
  74                     && p_input->stream.control.i_status == FORWARD_S )
  75             {
  76                 p_input->stream.i_new_rate =
  77                                     p_input->stream.control.i_rate / 2;
  78             }
  79             else
  80             {
  81                 p_input->stream.i_new_rate = DEFAULT_RATE / 2;
  82             }
  83             intf_Msg( "input: playing at %i:1 fast forward",
  84                       DEFAULT_RATE / p_input->stream.i_new_rate );
  85         }
  86         break;
  87
  88     case INPUT_RATE_SLOWER:
  89         /* If we are already going too slow, go back to default rate */
  90         if( p_input->stream.control.i_rate >= 8 * DEFAULT_RATE )
  91         {
  92             p_input->stream.i_new_status = PLAYING_S;
  93             intf_Msg( "input: playing at normal rate" );
  94         }
  95         else
  96         {
  97             p_input->stream.i_new_status = FORWARD_S;
  98
  99             if( p_input->stream.control.i_rate > DEFAULT_RATE
 100                     && p_input->stream.control.i_status == FORWARD_S )
 101             {
 102                 p_input->stream.i_new_rate =
 103                                     p_input->stream.control.i_rate * 2;
 104             }
 105             else
 106             {
 107                 p_input->stream.i_new_rate = DEFAULT_RATE * 2;
 108             }
 109             intf_Msg( "input: playing at 1:%i slow motion",
 110                       p_input->stream.i_new_rate / DEFAULT_RATE );
 111         }
 112         break;
 113
 114     default:
 115     }
 116
 117     vlc_cond_signal( &p_input->stream.stream_wait );
 118     vlc_mutex_unlock( &p_input->stream.stream_lock );
 119 }
 120
 121 /*****************************************************************************
 122  * input_Seek: changes the stream postion
 123  *****************************************************************************/
 124 void input_Seek( input_thread_t * p_input, off_t i_position )
 125 {
 126     intf_Msg( "input: seeking position %lld/%lld", i_position,
 127                                                    p_input->stream.i_size );
 128     vlc_mutex_lock( &p_input->stream.stream_lock );
 129     p_input->stream.i_seek = i_position;
 130     vlc_cond_signal( &p_input->stream.stream_wait );
 131     vlc_mutex_unlock( &p_input->stream.stream_lock );
 132 }
 133