research.m1stereo.tv/gitweb/ - melted/blob - src/modules/motion_est/filter_vismv.c

   1 /*
   2  *      /brief Draw motion vectors
   3  *      /author Zachary Drew, Copyright 2004
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software Foundation,
  17  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "filter_motion_est.h"
  21 #include "arrow_code.h"
  22
  23 #include <framework/mlt_frame.h>
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <math.h>
  28 #include <string.h>
  29
  30 #define ABS(a) ((a) >= 0 ? (a) : (-(a)))
  31
  32 static void paint_arrows( uint8_t *image, struct motion_vector_s *vectors, int w, int h, int mb_w, int mb_h )
  33 {
  34         int i, j, x, y;
  35         struct motion_vector_s *p;
  36         for( i = 0; i < w/mb_w; i++ ){
  37                 for( j = 0; j < h/mb_h; j++ ){
  38                         x = i*mb_w;
  39                         y = j*mb_h;
  40                         p = vectors + (w/mb_w)*j + i;
  41
  42                         if ( p->valid == 1 ) {
  43                                 //draw_rectangle_outline(image, x-1, y-1, mb_w+1, mb_h+1,100);
  44                                 //x += mb_w/4;
  45                                 //y += mb_h/4;
  46                                 //draw_rectangle_outline(image, x + p->dx, y + p->dy, mb_w, mb_h,100);
  47                                 x += mb_w/2;
  48                                 y += mb_h/2;
  49                                 draw_arrow(image, x, y, x + p->dx, y + p->dy, 100);
  50                                 //draw_rectangle_fill(image, x + p->dx, y + p->dy, mb_w, mb_h, 100);
  51                         }
  52                         else if ( p->valid == 2 ) {
  53                                 draw_rectangle_outline(image, x+1, y+1, mb_w-2, mb_h-2,100);
  54                         }
  55                         else if ( p->valid == 3 ) {
  56                                 draw_rectangle_fill(image, x-p->dx, y-p->dy, mb_w, mb_h,0);
  57                         }
  58                         else if ( p->valid == 4 ) {
  59                                 draw_line(image, x, y, x + 4, y, 100);
  60                                 draw_line(image, x, y, x, y + 4, 100);
  61                                 draw_line(image, x + 4, y, x, y + 4, 100);
  62
  63                                 draw_line(image, x+mb_w-1, y+mb_h-1, x+mb_w-5, y+mb_h-1, 100);
  64                                 draw_line(image, x+mb_w-1, y+mb_h-1, x+mb_w-1, y+mb_h-5, 100);
  65                                 draw_line(image, x+mb_w-5, y+mb_h-1, x+mb_w-1, y+mb_h-5, 100);
  66                         }
  67                 }
  68         }
  69 }
  70
  71 // Image stack(able) method
  72 static int filter_get_image( mlt_frame frame, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
  73 {
  74         // Get the frame properties
  75         mlt_properties properties = MLT_FRAME_PROPERTIES(frame);
  76
  77         // Get the new image
  78         int error = mlt_frame_get_image( frame, image, format, width, height, 1 );
  79
  80         if( error != 0 )
  81                 mlt_properties_debug( MLT_FRAME_PROPERTIES(frame), "error after mlt_frame_get_image()", stderr );
  82
  83
  84         // Get the size of macroblocks in pixel units
  85         int macroblock_height = mlt_properties_get_int( properties, "motion_est.macroblock_height" );
  86         int macroblock_width = mlt_properties_get_int( properties, "motion_est.macroblock_width" );
  87
  88         // Get the motion vectors
  89         struct motion_vector_s *current_vectors = mlt_properties_get_data( properties, "motion_est.vectors", NULL );
  90
  91         init_arrows( format, *width, *height );
  92
  93         if ( mlt_properties_get_int( properties, "shot_change" ) == 1 )
  94         {
  95                 draw_line(*image, 0, 0, *width, *height, 100);
  96                 draw_line(*image, 0, *height, *width, 0, 100);
  97         }
  98         if( current_vectors != NULL ) {
  99                 paint_arrows( *image, current_vectors, *width, *height, macroblock_width, macroblock_height);
 100         }
 101
 102         return error;
 103 }
 104
 105
 106
 107 /** Filter processing.
 108 */
 109
 110 static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
 111 {
 112         // Push the frame filter
 113         mlt_frame_push_get_image( frame, filter_get_image );
 114
 115
 116         return frame;
 117 }
 118
 119 /** Constructor for the filter.
 120 */
 121
 122
 123 mlt_filter filter_vismv_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
 124 {
 125         mlt_filter this = mlt_filter_new( );
 126         if ( this != NULL )
 127         {
 128                 this->process = filter_process;
 129
 130         }
 131
 132         return this;
 133 }
 134
 135 /** This source code will self destruct in 5...4...3...
 136 */
 137
 138
 139
 140
 141
 142
 143
 144