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* XVID MPEG-4 VIDEO CODEC |
* XVID MPEG-4 VIDEO CODEC |
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* - MB prediction header file - |
* - MB prediction header file - |
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* |
* |
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* This program is an implementation of a part of one or more MPEG-4 |
* Copyright(C) 2002 Christoph Lampert <gruel@web.de> |
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* Video tools as specified in ISO/IEC 14496-2 standard. Those intending |
* 2002 Peter Ross <pross@xvid.org> |
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* to use this software module in hardware or software products are |
* |
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* advised that its use may infringe existing patents or copyrights, and |
* This file is part of XviD, a free MPEG-4 video encoder/decoder |
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* any such use would be at such party's own risk. The original |
* |
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* developer of this software module and his/her company, and subsequent |
* XviD is free software; you can redistribute it and/or modify it |
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* editors and their companies, will have no liability for use of this |
* under the terms of the GNU General Public License as published by |
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* software or modifications or derivatives thereof. |
* the Free Software Foundation; either version 2 of the License, or |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the xvid_free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
* (at your option) any later version. |
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* |
* |
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* This program is distributed in the hope that it will be useful, |
* This program is distributed in the hope that it will be useful, |
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* GNU General Public License for more details. |
* GNU General Public License for more details. |
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* |
* |
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* You should have received a copy of the GNU General Public License |
* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the xvid_free Software |
* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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* Under section 8 of the GNU General Public License, the copyright |
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* holders of XVID explicitly forbid distribution in the following |
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* countries: |
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* |
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* - Japan |
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* - United States of America |
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* |
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* Linking XviD statically or dynamically with other modules is making a |
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* combined work based on XviD. Thus, the terms and conditions of the |
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* GNU General Public License cover the whole combination. |
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* |
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* As a special exception, the copyright holders of XviD give you |
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* permission to link XviD with independent modules that communicate with |
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* XviD solely through the VFW1.1 and DShow interfaces, regardless of the |
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* license terms of these independent modules, and to copy and distribute |
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* the resulting combined work under terms of your choice, provided that |
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* every copy of the combined work is accompanied by a complete copy of |
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* the source code of XviD (the version of XviD used to produce the |
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* combined work), being distributed under the terms of the GNU General |
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* Public License plus this exception. An independent module is a module |
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* which is not derived from or based on XviD. |
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* |
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* Note that people who make modified versions of XviD are not obligated |
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* to grant this special exception for their modified versions; it is |
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* their choice whether to do so. The GNU General Public License gives |
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* permission to release a modified version without this exception; this |
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* exception also makes it possible to release a modified version which |
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* carries forward this exception. |
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* |
* |
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* $Id$ |
* $Id$ |
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* |
* |
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if (num_cand == 1) { |
if (num_cand == 1) { |
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pmv[0] = pmv[last_cand]; |
pmv[0] = pmv[last_cand]; |
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psad[0] = psad[last_cand]; |
psad[0] = psad[last_cand]; |
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// return MVequal(pmv[0], zeroMV); /* no point calculating median mv and minimum sad */ |
/* return MVequal(pmv[0], zeroMV); no point calculating median mv and minimum sad */ |
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/* original pmvdata() compatibility hack */ |
/* original pmvdata() compatibility hack */ |
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return y==0 && block <= 1 ? 0 : MVequal(pmv[0], zeroMV); |
return y==0 && block <= 1 ? 0 : MVequal(pmv[0], zeroMV); |
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psad[0] = MIN(MIN(psad[1], psad[2]), psad[3]); |
psad[0] = MIN(MIN(psad[1], psad[2]), psad[3]); |
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return 1; |
return 1; |
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/* compatibility patch */ |
/* compatibility patch */ |
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//return y==0 && block <= 1 ? 0 : 1; |
/*return y==0 && block <= 1 ? 0 : 1; */ |
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} |
} |
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/* set median, minimum */ |
/* set median, minimum */ |
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if (num_cand == 1) { |
if (num_cand == 1) { |
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pmv[0] = pmv[last_cand]; |
pmv[0] = pmv[last_cand]; |
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psad[0] = psad[last_cand]; |
psad[0] = psad[last_cand]; |
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// return MVequal(pmv[0], zeroMV); /* no point calculating median mv and minimum sad */ |
/* return MVequal(pmv[0], zeroMV); no point calculating median mv and minimum sad */ |
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/* original pmvdata() compatibility hack */ |
/* original pmvdata() compatibility hack */ |
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return y==0 && block <= 1 ? 0 : MVequal(pmv[0], zeroMV); |
return y==0 && block <= 1 ? 0 : MVequal(pmv[0], zeroMV); |
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psad[0] = MIN(MIN(psad[1], psad[2]), psad[3]); |
psad[0] = MIN(MIN(psad[1], psad[2]), psad[3]); |
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return 1; |
return 1; |
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/* compatibility patch */ |
/* compatibility patch */ |
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//return y==0 && block <= 1 ? 0 : 1; |
/*return y==0 && block <= 1 ? 0 : 1; */ |
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} |
} |
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/* set median, minimum */ |
/* set median, minimum */ |