forked from mirror/libbpg
111 lines
3.8 KiB
C++
111 lines
3.8 KiB
C++
/*****************************************************************************
|
|
* Copyright (C) 2013 x265 project
|
|
*
|
|
* Authors: Steve Borho <steve@borho.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
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
|
|
*
|
|
* This program is also available under a commercial proprietary license.
|
|
* For more information, contact us at license @ x265.com.
|
|
*****************************************************************************/
|
|
|
|
#ifndef X265_MV_H
|
|
#define X265_MV_H
|
|
|
|
#include "common.h"
|
|
#include "primitives.h"
|
|
|
|
namespace X265_NS {
|
|
// private x265 namespace
|
|
|
|
#if _MSC_VER
|
|
#pragma warning(disable: 4201) // non-standard extension used (nameless struct/union)
|
|
#endif
|
|
|
|
struct MV
|
|
{
|
|
public:
|
|
|
|
union {
|
|
struct { int16_t x, y; };
|
|
|
|
int32_t word;
|
|
};
|
|
|
|
MV() {}
|
|
MV(int32_t w) : word(w) {}
|
|
MV(int16_t _x, int16_t _y) : x(_x), y(_y) {}
|
|
|
|
MV& operator =(uint32_t w) { word = w; return *this; }
|
|
|
|
MV& operator +=(const MV& other) { x += other.x; y += other.y; return *this; }
|
|
|
|
MV& operator -=(const MV& other) { x -= other.x; y -= other.y; return *this; }
|
|
|
|
MV& operator >>=(int i) { x >>= i; y >>= i; return *this; }
|
|
|
|
#if USING_FTRAPV
|
|
/* avoid signed left-shifts when -ftrapv is enabled */
|
|
MV& operator <<=(int i) { x *= (1 << i); y *= (1 << i); return *this; }
|
|
MV operator <<(int i) const { return MV(x * (1 << i), y * (1 << i)); }
|
|
#else
|
|
MV& operator <<=(int i) { x <<= i; y <<= i; return *this; }
|
|
MV operator <<(int i) const { return MV(x << i, y << i); }
|
|
#endif
|
|
|
|
MV operator >>(int i) const { return MV(x >> i, y >> i); }
|
|
|
|
MV operator *(int16_t i) const { return MV(x * i, y * i); }
|
|
|
|
MV operator -(const MV& other) const { return MV(x - other.x, y - other.y); }
|
|
|
|
MV operator +(const MV& other) const { return MV(x + other.x, y + other.y); }
|
|
|
|
bool operator ==(const MV& other) const { return word == other.word; }
|
|
|
|
bool operator !=(const MV& other) const { return word != other.word; }
|
|
|
|
bool operator !() const { return !word; }
|
|
|
|
// Scale down a QPEL mv to FPEL mv, rounding up by one HPEL offset
|
|
MV roundToFPel() const { return MV((x + 2) >> 2, (y + 2) >> 2); }
|
|
|
|
// Scale up an FPEL mv to QPEL by shifting up two bits
|
|
MV toQPel() const { return *this << 2; }
|
|
|
|
bool inline notZero() const { return this->word != 0; }
|
|
|
|
bool inline isSubpel() const { return (this->word & 0x00030003) != 0; }
|
|
|
|
MV mvmin(const MV& m) const { return MV(x > m.x ? m.x : x, y > m.y ? m.y : y); }
|
|
|
|
MV mvmax(const MV& m) const { return MV(x < m.x ? m.x : x, y < m.y ? m.y : y); }
|
|
|
|
MV clipped(const MV& _min, const MV& _max) const
|
|
{
|
|
MV cl = mvmin(_max);
|
|
|
|
return cl.mvmax(_min);
|
|
}
|
|
|
|
// returns true if MV is within range (inclusive)
|
|
bool checkRange(const MV& _min, const MV& _max) const
|
|
{
|
|
return x >= _min.x && x <= _max.x && y >= _min.y && y <= _max.y;
|
|
}
|
|
};
|
|
}
|
|
|
|
#endif // ifndef X265_MV_H
|