[svn] / branches / dev-api-4 / xvidcore / src / motion / motion_est.h Repository:
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revision 1128, Mon Aug 25 15:01:51 2003 UTC revision 1129, Mon Aug 25 15:10:30 2003 UTC
# Line 21  Line 21 
21   *  along with this program ; if not, write to the Free Software   *  along with this program ; if not, write to the Free Software
22   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
23   *   *
24   * $Id: motion_est.h,v 1.3.2.15 2003-08-03 10:10:54 syskin Exp $   * $Id: motion_est.h,v 1.3.2.16 2003-08-25 15:10:30 syskin Exp $
25   *   *
26   ****************************************************************************/   ****************************************************************************/
27    
# Line 160  Line 160 
160                    int32_t * const max_dy,                    int32_t * const max_dy,
161                    const uint32_t x,                    const uint32_t x,
162                    const uint32_t y,                    const uint32_t y,
163                    uint32_t block_sz, /* block dimension, 8 or 16 */                    uint32_t block_sz, /* block dimension, 3(8) or 4(16) */
164                    const uint32_t width,                    const uint32_t width,
165                    const uint32_t height,                    const uint32_t height,
166                    const uint32_t fcode,                    const uint32_t fcode,
167                    const int qpel, /* 1 if the resulting range should be in qpel precision; otherwise 0 */                    const int precision, /* 2 for qpel, 1 for halfpel */
168                    const int rrv)                    const int rrv)
169  {  {
170          int k, m = qpel ? 4 : 2;          int k;
171          const int search_range = 32 << (fcode - 1);          const int search_range = 16 << fcode;
172          int high = search_range - 1;          int high = search_range - 1;
173          int low = -search_range;          int low = -search_range;
174    
175          if (rrv) {          if (rrv) {
176                  high = RRV_MV_SCALEUP(high);                  high = RRV_MV_SCALEUP(high);
177                  low = RRV_MV_SCALEUP(low);                  low = RRV_MV_SCALEUP(low);
178                  block_sz *= 2;                  block_sz++;
179          }          }
180    
181          k = m * (int)(width - x * block_sz);          k = (int)(width - (x<<block_sz))<<precision;
182          *max_dx = MIN(high, k);          *max_dx = min(high, k);
183          k = m * (int)(height -  y * block_sz);          k = (int)(height -  (y<<block_sz))<<precision;
184          *max_dy = MIN(high, k);          *max_dy = min(high, k);
185    
186          k = -m * (int)((x+1) * block_sz);          k = (-(int)((x+1)<<block_sz))<<precision;
187          *min_dx = MAX(low, k);          *min_dx = max(low, k);
188          k = -m * (int)((y+1) * block_sz);          k = (-(int)((y+1)<<block_sz))<<precision;
189          *min_dy = MAX(low, k);          *min_dy = max(low, k);
190  }  }
191    
192  typedef void MainSearchFunc(int x, int y, const SearchData * const Data, int bDirection);  typedef void MainSearchFunc(int x, int y, const SearchData * const Data, int bDirection);
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