1 /*****************************************************************************
2 * idctmmxext.c : MMX EXT IDCT module
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: idctmmxext.c,v 1.1 2001/01/16 13:26:46 sam Exp $
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 idctmmxext
26 /*****************************************************************************
28 *****************************************************************************/
37 #include "tests.h" /* TestCPU() */
40 #include "video_output.h"
42 #include "video_decoder.h"
45 #include "modules_inner.h"
49 /*****************************************************************************
51 *****************************************************************************/
52 static void idct_getfunctions( function_list_t * p_function_list );
54 static int idct_Probe ( probedata_t *p_data );
56 void vdec_InitIDCT ( vdec_thread_t * p_vdec);
57 void vdec_SparseIDCT ( vdec_thread_t * p_vdec, dctelem_t * p_block,
59 void vdec_IDCT ( vdec_thread_t * p_vdec, dctelem_t * p_block,
63 /*****************************************************************************
64 * Build configuration tree.
65 *****************************************************************************/
67 ADD_WINDOW( "Configuration for MMX EXT IDCT module" )
68 ADD_COMMENT( "Ha, ha -- nothing to configure yet" )
71 /*****************************************************************************
72 * InitModule: get the module structure and configuration.
73 *****************************************************************************
74 * We have to fill psz_name, psz_longname and psz_version. These variables
75 * will be strdup()ed later by the main application because the module can
76 * be unloaded later to save memory, and we want to be able to access this
77 * data even after the module has been unloaded.
78 *****************************************************************************/
79 int InitModule( module_t * p_module )
81 p_module->psz_name = MODULE_STRING;
82 p_module->psz_longname = "MMX EXT IDCT module";
83 p_module->psz_version = VERSION;
85 p_module->i_capabilities = MODULE_CAPABILITY_NULL
86 | MODULE_CAPABILITY_IDCT;
91 /*****************************************************************************
92 * ActivateModule: set the module to an usable state.
93 *****************************************************************************
94 * This function fills the capability functions and the configuration
95 * structure. Once ActivateModule() has been called, the i_usage can
96 * be set to 0 and calls to NeedModule() be made to increment it. To unload
97 * the module, one has to wait until i_usage == 0 and call DeactivateModule().
98 *****************************************************************************/
99 int ActivateModule( module_t * p_module )
101 p_module->p_functions = malloc( sizeof( module_functions_t ) );
102 if( p_module->p_functions == NULL )
107 idct_getfunctions( &p_module->p_functions->idct );
109 p_module->p_config = p_config;
114 /*****************************************************************************
115 * DeactivateModule: make sure the module can be unloaded.
116 *****************************************************************************
117 * This function must only be called when i_usage == 0. If it successfully
118 * returns, i_usage can be set to -1 and the module unloaded. Be careful to
119 * lock usage_lock during the whole process.
120 *****************************************************************************/
121 int DeactivateModule( module_t * p_module )
123 free( p_module->p_functions );
128 /* Following functions are local */
130 /*****************************************************************************
131 * Functions exported as capabilities.
132 *****************************************************************************/
133 static void idct_getfunctions( function_list_t * p_function_list )
135 p_function_list->pf_probe = idct_Probe;
136 p_function_list->functions.idct.pf_init = vdec_InitIDCT;
137 p_function_list->functions.idct.pf_sparse_idct = vdec_SparseIDCT;
138 p_function_list->functions.idct.pf_idct = vdec_IDCT;
141 /*****************************************************************************
142 * idct_Probe: return a preference score
143 *****************************************************************************/
144 static int idct_Probe( probedata_t *p_data )
146 /* FIXME: we need to test for EXT extensions */
147 if( TestCPU() & CPU_CAPABILITY_MMX )
149 if( TestMethod( IDCT_METHOD_VAR, "idctmmxext" ) )