[svn] / branches / dev-api-3 / xvidcore / src / motion / motion_est.h Repository:
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revision 663, Wed Nov 20 15:29:07 2002 UTC revision 700, Sun Dec 8 14:57:09 2002 UTC
# Line 26  Line 26 
26   *  along with this program; if not, write to the Free Software   *  along with this program; if not, write to the Free Software
27   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
28   *   *
29   *  $Id: motion_est.h,v 1.1.2.8 2002-11-20 15:29:07 syskin Exp $   *  $Id: motion_est.h,v 1.1.2.9 2002-12-08 14:57:09 syskin Exp $
30   *   *
31   ***************************************************************************/   ***************************************************************************/
32    
# Line 165  Line 165 
165                    const uint32_t block_sz,      /* block dimension, 8 or 16 */                    const uint32_t block_sz,      /* block dimension, 8 or 16 */
166                    const uint32_t width,                    const uint32_t width,
167                    const uint32_t height,                    const uint32_t height,
168                    const uint32_t fcode,                    const uint32_t fcode)
                   const uint32_t quarterpel)  
169  {  {
   
170          int k;          int k;
171          const int search_range = 32 << (fcode - 1 - quarterpel);          const int search_range = 32 << (fcode - 1);
172          const int high = search_range - 1;          const int high = search_range - 1;
173          const int low = -search_range;          const int low = -search_range;
174    
# Line 183  Line 181 
181          *min_dx = MAX(low, k);          *min_dx = MAX(low, k);
182          k = -2 * (int)((y+1) * block_sz);          k = -2 * (int)((y+1) * block_sz);
183          *min_dy = MAX(low, k);          *min_dy = MAX(low, k);
184    }
185    
186    static void __inline
187    get_range_qpel(int32_t * const min_dx,
188                      int32_t * const max_dx,
189                      int32_t * const min_dy,
190                      int32_t * const max_dy,
191                      const uint32_t x,
192                      const uint32_t y,
193                      const uint32_t block_sz,      /* block dimension, 8 or 16 */
194                      const uint32_t width,
195                      const uint32_t height,
196                      const uint32_t fcode)
197    {
198            int k;
199            const int search_range = 32 << (fcode - 1);
200            const int high = search_range - 1;
201            const int low = -search_range;
202    
203            k = 4 * (int)(width - x*block_sz);
204            *max_dx = MIN(high, k);
205            k = 4 * (int)(height -  y*block_sz);
206            *max_dy = MIN(high, k);
207    
208            k = -4 * (int)((x+1) * block_sz);
209            *min_dx = MAX(low, k);
210            k = -4 * (int)((y+1) * block_sz);
211            *min_dy = MAX(low, k);
212  }  }
213    
214    
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