/*****************************************************************************
* motion.c : C motion compensation module for vlc
*****************************************************************************
- * Copyright (C) 2000 VideoLAN
- * $Id: motion.c,v 1.8 2001/07/11 02:01:05 sam Exp $
+ * Copyright (C) 2001 VideoLAN
+ * $Id: motion.c,v 1.9 2001/08/22 17:21:45 massiot Exp $
*
- * Authors: Christophe Massiot <massiot@via.ecp.fr>
+ * Authors: Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ * Michel Lespinasse <walken@zoy.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
#include "mtime.h"
#include "tests.h"
-#include "video.h"
-
#include "modules.h"
#include "modules_export.h"
/*****************************************************************************
* Local and extern prototypes.
*****************************************************************************/
-void _M( motion_getfunctions )( function_list_t * p_function_list );
+static void motion_getfunctions( function_list_t * p_function_list );
/*****************************************************************************
* Build configuration tree.
MODULE_INIT_STOP
MODULE_ACTIVATE_START
- _M( motion_getfunctions )( &p_module->p_functions->motion );
+ motion_getfunctions( &p_module->p_functions->motion );
MODULE_ACTIVATE_STOP
MODULE_DEACTIVATE_START
/*****************************************************************************
* motion_Probe: tests probe the CPU and return a score
*****************************************************************************/
-int _M( motion_Probe )( probedata_t *p_data )
+static int motion_Probe( probedata_t *p_data )
{
if( TestMethod( MOTION_METHOD_VAR, "motion" )
|| TestMethod( MOTION_METHOD_VAR, "c" ) )
return( 50 );
}
+/*****************************************************************************
+ * Simple motion compensation in C
+ *****************************************************************************/
+
+#define avg2(a,b) ((a+b+1)>>1)
+#define avg4(a,b,c,d) ((a+b+c+d+2)>>2)
+
+#define predict_(i) (ref[i])
+#define predict_x(i) (avg2 (ref[i], ref[i+1]))
+#define predict_y(i) (avg2 (ref[i], (ref+stride)[i]))
+#define predict_xy(i) (avg4 (ref[i], ref[i+1], (ref+stride)[i], (ref+stride)[i+1]))
+
+#define put(predictor,i) dest[i] = predictor (i)
+#define avg(predictor,i) dest[i] = avg2 (predictor (i), dest[i])
+
+// mc function template
+
+#define MC_FUNC(op,xy) \
+static void MC_##op##_##xy##16_c (yuv_data_t * dest, yuv_data_t * ref, \
+ int stride, int height) \
+{ \
+ do { \
+ op (predict_##xy, 0); \
+ op (predict_##xy, 1); \
+ op (predict_##xy, 2); \
+ op (predict_##xy, 3); \
+ op (predict_##xy, 4); \
+ op (predict_##xy, 5); \
+ op (predict_##xy, 6); \
+ op (predict_##xy, 7); \
+ op (predict_##xy, 8); \
+ op (predict_##xy, 9); \
+ op (predict_##xy, 10); \
+ op (predict_##xy, 11); \
+ op (predict_##xy, 12); \
+ op (predict_##xy, 13); \
+ op (predict_##xy, 14); \
+ op (predict_##xy, 15); \
+ ref += stride; \
+ dest += stride; \
+ } while (--height); \
+} \
+static void MC_##op##_##xy##8_c (yuv_data_t * dest, yuv_data_t * ref, \
+ int stride, int height) \
+{ \
+ do { \
+ op (predict_##xy, 0); \
+ op (predict_##xy, 1); \
+ op (predict_##xy, 2); \
+ op (predict_##xy, 3); \
+ op (predict_##xy, 4); \
+ op (predict_##xy, 5); \
+ op (predict_##xy, 6); \
+ op (predict_##xy, 7); \
+ ref += stride; \
+ dest += stride; \
+ } while (--height); \
+}
+
+// definitions of the actual mc functions
+
+MC_FUNC (put,)
+MC_FUNC (avg,)
+MC_FUNC (put,x)
+MC_FUNC (avg,x)
+MC_FUNC (put,y)
+MC_FUNC (avg,y)
+MC_FUNC (put,xy)
+MC_FUNC (avg,xy)
+
+/*****************************************************************************
+ * Functions exported as capabilities. They are declared as static so that
+ * we don't pollute the namespace too much.
+ *****************************************************************************/
+static void motion_getfunctions( function_list_t * p_function_list )
+{
+ static void (* ppppf_motion[2][2][4])( yuv_data_t *, yuv_data_t *,
+ int, int ) =
+ {
+ {
+ /* Copying functions */
+ {
+ /* Width == 16 */
+ MC_put_16_c, MC_put_x16_c, MC_put_y16_c, MC_put_xy16_c
+ },
+ {
+ /* Width == 8 */
+ MC_put_8_c, MC_put_x8_c, MC_put_y8_c, MC_put_xy8_c
+ }
+ },
+ {
+ /* Averaging functions */
+ {
+ /* Width == 16 */
+ MC_avg_16_c, MC_avg_x16_c, MC_avg_y16_c, MC_avg_xy16_c
+ },
+ {
+ /* Width == 8 */
+ MC_avg_8_c, MC_avg_x8_c, MC_avg_y8_c, MC_avg_xy8_c
+ }
+ }
+ };
+
+ p_function_list->pf_probe = motion_Probe;
+
+#define list p_function_list->functions.motion
+ memcpy( list.ppppf_motion, ppppf_motion, sizeof( void * ) * 16 );
+#undef list
+
+ return;
+}
projects / vlc / blobdiff