plugins/downmix/downmix3dn.c

   1 /*****************************************************************************
   2  * downmix3dn.c : accelerated 3D Now! AC3 downmix module
   3  *****************************************************************************
   4  * Copyright (C) 1999, 2000 VideoLAN
   5  * $Id: downmix3dn.c,v 1.4 2001/07/11 02:01:04 sam Exp $
   6  *
   7  * Authors: Gaël Hendryckx <jimmy@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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 #define MODULE_NAME downmix3dn
  25 #include "modules_inner.h"
  26
  27 /*****************************************************************************
  28  * Preamble
  29  *****************************************************************************/
  30 #include "defs.h"
  31
  32 #include <stdlib.h>
  33
  34 #include "config.h"
  35 #include "common.h"
  36 #include "threads.h"
  37 #include "mtime.h"
  38 #include "tests.h"
  39
  40 #include "ac3_downmix.h"
  41 #include "ac3_downmix_common.h"
  42
  43 #include "modules.h"
  44 #include "modules_export.h"
  45
  46 /*****************************************************************************
  47  * Local and extern prototypes.
  48  *****************************************************************************/
  49 static void downmix_getfunctions( function_list_t * p_function_list );
  50 static int  downmix_Probe       ( probedata_t *p_data );
  51
  52 /*****************************************************************************
  53  * Build configuration tree.
  54  *****************************************************************************/
  55 MODULE_CONFIG_START
  56 ADD_WINDOW( "Configuration for AC3 downmix3dn module" )
  57     ADD_COMMENT( "Ha, ha -- nothing to configure yet" )
  58 MODULE_CONFIG_STOP
  59
  60 MODULE_INIT_START
  61     p_module->i_capabilities = MODULE_CAPABILITY_NULL
  62                                 | MODULE_CAPABILITY_DOWNMIX;
  63     p_module->psz_longname = "3D Now! AC3 downmix module";
  64 MODULE_INIT_STOP
  65
  66 MODULE_ACTIVATE_START
  67     downmix_getfunctions( &p_module->p_functions->downmix );
  68 MODULE_ACTIVATE_STOP
  69
  70 MODULE_DEACTIVATE_START
  71 MODULE_DEACTIVATE_STOP
  72
  73 /* Following functions are local */
  74
  75 /*****************************************************************************
  76  * Functions exported as capabilities. They are declared as static so that
  77  * we don't pollute the namespace too much.
  78  *****************************************************************************/
  79 static void downmix_getfunctions( function_list_t * p_function_list )
  80 {
  81     p_function_list->pf_probe = downmix_Probe;
  82 #define F p_function_list->functions.downmix
  83     F.pf_downmix_3f_2r_to_2ch = _M( downmix_3f_2r_to_2ch );
  84     F.pf_downmix_3f_1r_to_2ch = _M( downmix_3f_1r_to_2ch );
  85     F.pf_downmix_2f_2r_to_2ch = _M( downmix_2f_2r_to_2ch );
  86     F.pf_downmix_2f_1r_to_2ch = _M( downmix_2f_1r_to_2ch );
  87     F.pf_downmix_3f_0r_to_2ch = _M( downmix_3f_0r_to_2ch );
  88     F.pf_stream_sample_2ch_to_s16 = _M( stream_sample_2ch_to_s16 );
  89     F.pf_stream_sample_1ch_to_s16 = _M( stream_sample_1ch_to_s16 );
  90 #undef F
  91 }
  92
  93 /*****************************************************************************
  94  * downmix_Probe: returns a preference score
  95  *****************************************************************************/
  96 static int downmix_Probe( probedata_t *p_data )
  97 {
  98     if( !TestCPU( CPU_CAPABILITY_3DNOW ) )
  99     {
 100         return( 0 );
 101     }
 102
 103     if( TestMethod( DOWNMIX_METHOD_VAR, "downmix3dn" )
 104          || TestMethod( DOWNMIX_METHOD_VAR, "3dn" ) )
 105     {
 106         return( 999 );
 107     }
 108
 109     /* This plugin always works */
 110     return( 200 );
 111 }
 112