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      1 /*
      2  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 
     12 /****************************************************************************
     13 *
     14 *   Module Title :     system_dependent.c
     15 *
     16 *   Description  :     Miscellaneous system dependent functions
     17 *
     18 ****************************************************************************/
     19 
     20 /****************************************************************************
     21 *  Header Files
     22 ****************************************************************************/
     23 #include "vpx_scale/vpxscale.h"
     24 #include "cpuidlib.h"
     25 
     26 /****************************************************************************
     27 *  Imports
     28 *****************************************************************************/
     29 extern void register_generic_scalers(void);
     30 extern void register_mmxscalers(void);
     31 
     32 /****************************************************************************
     33  *
     34  *  ROUTINE       : post_proc_machine_specific_config
     35  *
     36  *  INPUTS        : UINT32 Version : Codec version number.
     37  *
     38  *  OUTPUTS       : None.
     39  *
     40  *  RETURNS       : void
     41  *
     42  *  FUNCTION      : Checks for machine specifc features such as MMX support
     43  *                  sets appropriate flags and function pointers.
     44  *
     45  *  SPECIAL NOTES : None.
     46  *
     47  ****************************************************************************/
     48 void
     49 vp8_scale_machine_specific_config(void)
     50 {
     51     // If MMX supported then set to use MMX versions of functions else
     52     // use original 'C' versions.
     53     int mmx_enabled;
     54     int xmm_enabled;
     55     int wmt_enabled;
     56 
     57     vpx_get_processor_flags(&mmx_enabled, &xmm_enabled, &wmt_enabled);
     58 
     59     if (mmx_enabled || xmm_enabled || wmt_enabled)
     60     {
     61         register_mmxscalers();
     62     }
     63     else
     64     {
     65         vp8_horizontal_line_1_2_scale        = vp8cx_horizontal_line_1_2_scale_c;
     66         vp8_vertical_band_1_2_scale          = vp8cx_vertical_band_1_2_scale_c;
     67         vp8_last_vertical_band_1_2_scale      = vp8cx_last_vertical_band_1_2_scale_c;
     68         vp8_horizontal_line_3_5_scale        = vp8cx_horizontal_line_3_5_scale_c;
     69         vp8_vertical_band_3_5_scale          = vp8cx_vertical_band_3_5_scale_c;
     70         vp8_last_vertical_band_3_5_scale      = vp8cx_last_vertical_band_3_5_scale_c;
     71         vp8_horizontal_line_3_4_scale        = vp8cx_horizontal_line_3_4_scale_c;
     72         vp8_vertical_band_3_4_scale          = vp8cx_vertical_band_3_4_scale_c;
     73         vp8_last_vertical_band_3_4_scale      = vp8cx_last_vertical_band_3_4_scale_c;
     74         vp8_horizontal_line_2_3_scale        = vp8cx_horizontal_line_2_3_scale_c;
     75         vp8_vertical_band_2_3_scale          = vp8cx_vertical_band_2_3_scale_c;
     76         vp8_last_vertical_band_2_3_scale      = vp8cx_last_vertical_band_2_3_scale_c;
     77         vp8_horizontal_line_4_5_scale        = vp8cx_horizontal_line_4_5_scale_c;
     78         vp8_vertical_band_4_5_scale          = vp8cx_vertical_band_4_5_scale_c;
     79         vp8_last_vertical_band_4_5_scale      = vp8cx_last_vertical_band_4_5_scale_c;
     80 
     81 
     82         vp8_vertical_band_5_4_scale           = vp8cx_vertical_band_5_4_scale_c;
     83         vp8_vertical_band_5_3_scale           = vp8cx_vertical_band_5_3_scale_c;
     84         vp8_vertical_band_2_1_scale           = vp8cx_vertical_band_2_1_scale_c;
     85         vp8_vertical_band_2_1_scale_i         = vp8cx_vertical_band_2_1_scale_i_c;
     86         vp8_horizontal_line_2_1_scale         = vp8cx_horizontal_line_2_1_scale_c;
     87         vp8_horizontal_line_5_3_scale         = vp8cx_horizontal_line_5_3_scale_c;
     88         vp8_horizontal_line_5_4_scale         = vp8cx_horizontal_line_5_4_scale_c;
     89 
     90     }
     91 }
     92