1 /*****************************************************************************
2 * idctaltivec.c : Altivec IDCT module
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: idctaltivec.c,v 1.13 2001/09/06 10:19:18 massiot Exp $
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
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.
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.
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 *****************************************************************************/
24 #define MODULE_NAME idctaltivec
25 #include "modules_inner.h"
27 /*****************************************************************************
29 *****************************************************************************/
39 #include "tests.h" /* TestCPU() */
44 #include "modules_export.h"
46 /*****************************************************************************
48 *****************************************************************************/
49 static void idct_getfunctions( function_list_t * p_function_list );
50 void idct_block_copy_altivec( dctelem_t *, yuv_data_t *, int, void *, int );
51 void idct_block_add_altivec( dctelem_t *, yuv_data_t *, int, void *, int );
53 /*****************************************************************************
54 * Build configuration tree.
55 *****************************************************************************/
57 ADD_WINDOW( "Configuration for Altivec IDCT module" )
58 ADD_COMMENT( "Ha, ha -- nothing to configure yet" )
62 p_module->i_capabilities = MODULE_CAPABILITY_NULL
63 | MODULE_CAPABILITY_IDCT;
64 p_module->psz_longname = "Altivec IDCT module";
68 idct_getfunctions( &p_module->p_functions->idct );
71 MODULE_DEACTIVATE_START
72 MODULE_DEACTIVATE_STOP
74 /* Following functions are local */
76 /*****************************************************************************
77 * idct_Probe: return a preference score
78 *****************************************************************************/
79 static int idct_Probe( probedata_t *p_data )
81 if( !TestCPU( CPU_CAPABILITY_ALTIVEC ) )
86 if( TestMethod( IDCT_METHOD_VAR, "idctaltivec" )
87 || TestMethod( IDCT_METHOD_VAR, "altivec" ) )
95 /*****************************************************************************
96 * Placeholders for unused functions
97 *****************************************************************************/
98 static void NormScan( u8 ppi_scan[2][64] )
102 static void InitIDCT( void * p_idct_data )
107 /*****************************************************************************
108 * Functions exported as capabilities. They are declared as static so that
109 * we don't pollute the namespace too much.
110 *****************************************************************************/
111 static void idct_getfunctions( function_list_t * p_function_list )
113 p_function_list->pf_probe = idct_Probe;
114 #define F p_function_list->functions.idct
115 F.pf_idct_init = InitIDCT;
116 F.pf_norm_scan = NormScan;
117 /* FIXME : it would be a nice idea to use sparse IDCT functions */
118 F.pf_sparse_idct_add = idct_block_add_altivec;
119 F.pf_sparse_idct_copy = idct_block_copy_altivec;
120 F.pf_idct_add = idct_block_add_altivec;
121 F.pf_idct_copy = idct_block_copy_altivec;