modules/access/screen/beos.cpp

   1 /*****************************************************************************
   2  * beos.cpp: Screen capture module.
   3  *****************************************************************************
   4  * Copyright (C) 2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Eric Petit <titer@m0k.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 #ifdef HAVE_CONFIG_H
  26 # include "config.h"
  27 #endif
  28
  29 #include <vlc_common.h>
  30
  31 #include <Screen.h>
  32 #include <Bitmap.h>
  33
  34 extern "C"
  35 {
  36
  37 #include "screen.h"
  38
  39 struct screen_data_t
  40 {
  41     BScreen * p_screen;
  42     BBitmap * p_bitmap;
  43 };
  44
  45 int screen_InitCapture( demux_t *p_demux )
  46 {
  47     demux_sys_t   *p_sys = p_demux->p_sys;
  48     screen_data_t *p_data;
  49     BRect          rect;
  50     int            i_chroma;
  51     int            i_bits_per_pixel;
  52
  53     p_sys->p_data = p_data =
  54         (screen_data_t *)malloc( sizeof( screen_data_t ) );
  55
  56     p_data->p_screen = new BScreen();
  57     rect = p_data->p_screen->Frame();
  58
  59     p_data->p_bitmap = new BBitmap( rect, p_data->p_screen->ColorSpace() );
  60
  61     switch( p_data->p_screen->ColorSpace() )
  62     {
  63         case B_RGB32:
  64             i_chroma = VLC_CODEC_RGB32;
  65             i_bits_per_pixel = 32;
  66             break;
  67         case B_RGB16:
  68             i_chroma = VLC_CODEC_RGB16;
  69             i_bits_per_pixel = 16;
  70             break;
  71         default:
  72             msg_Err( p_demux, "screen depth %i unsupported",
  73                      p_data->p_screen->ColorSpace() );
  74             delete p_data->p_bitmap;
  75             delete p_data->p_screen;
  76             free( p_data );
  77             return VLC_EGENERIC;
  78     }
  79     es_format_Init( &p_sys->fmt, VIDEO_ES, i_chroma );
  80     p_sys->fmt.video.i_width  = (int)rect.Width();
  81     p_sys->fmt.video.i_height = (int)rect.Height();
  82     p_sys->fmt.video.i_bits_per_pixel = i_bits_per_pixel;
  83
  84     return VLC_SUCCESS;
  85 }
  86
  87 int screen_CloseCapture( demux_t *p_demux )
  88 {
  89     demux_sys_t   *p_sys  = p_demux->p_sys;
  90     screen_data_t *p_data = p_sys->p_data;
  91
  92     delete p_data->p_bitmap;
  93     delete p_data->p_screen;
  94     free( p_data );
  95
  96     return VLC_SUCCESS;
  97 }
  98
  99 block_t *screen_Capture( demux_t *p_demux )
 100 {
 101     demux_sys_t   *p_sys  = p_demux->p_sys;
 102     screen_data_t *p_data = p_sys->p_data;
 103     block_t       *p_block;
 104
 105     p_block = block_New( p_demux, p_sys->fmt.video.i_width *
 106                          p_sys->fmt.video.i_height *
 107                          p_sys->fmt.video.i_bits_per_pixel / 8 );
 108
 109     p_data->p_screen->ReadBitmap( p_data->p_bitmap );
 110
 111     for( unsigned i = 0; i < p_sys->fmt.video.i_height; i++ )
 112     {
 113         memcpy( p_block->p_buffer + i * p_sys->fmt.video.i_width *
 114                     p_sys->fmt.video.i_bits_per_pixel / 8,
 115                 (uint8_t *) p_data->p_bitmap->Bits() +
 116                     i * p_data->p_bitmap->BytesPerRow(),
 117                 p_sys->fmt.video.i_width *
 118                     p_sys->fmt.video.i_bits_per_pixel / 8 );
 119     }
 120     return p_block;
 121 }
 122
 123 } /* extern "C" */