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/*****************************************************************************
* Copyright (C) 2013-2020 MulticoreWare, Inc
*
* 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_BITCOST_H
#define X265_BITCOST_H
#include "common.h"
#include "threading.h"
#include "mv.h"
namespace X265_NS {
// private x265 namespace
class BitCost
{
public:
BitCost()
: m_cost_mvx(0)
, m_cost_mvy(0)
, m_cost(0)
, m_mvp(0)
, s_bitsizes(NULL)
{
memset(m_fpelMvCosts, 0, sizeof(m_fpelMvCosts));
memset(s_costs, 0, sizeof(s_costs));
memset(s_fpelMvCosts, 0, sizeof(s_fpelMvCosts));
}
~BitCost() { destroy(); }
void setQP(unsigned int qp);
void setMVP(const MV& mvp) { m_mvp = mvp; m_cost_mvx = m_cost - mvp.x; m_cost_mvy = m_cost - mvp.y; }
// return bit cost of motion vector difference, multiplied by lambda
inline uint16_t mvcost(const MV& mv) const { return m_cost_mvx[mv.x] + m_cost_mvy[mv.y]; }
// return bit cost of motion vector difference, without lambda
inline uint32_t bitcost(const MV& mv) const
{
return (uint32_t)(s_bitsizes[mv.x - m_mvp.x] +
s_bitsizes[mv.y - m_mvp.y] + 0.5f);
}
inline uint32_t bitcost(const MV& mv, const MV& mvp) const
{
return (uint32_t)(s_bitsizes[mv.x - mvp.x] +
s_bitsizes[mv.y - mvp.y] + 0.5f);
}
void destroy();
protected:
uint16_t *m_cost_mvx;
uint16_t *m_cost_mvy;
uint16_t *m_cost;
uint16_t *m_fpelMvCosts[4];
MV m_mvp;
BitCost& operator =(const BitCost&);
private:
/* default log2_max_mv_length_horizontal and log2_max_mv_length_horizontal
* are 15, specified in quarter-pel luma sample units. making the maximum
* signaled ful-pel motion distance 4096, max qpel is 32768 */
enum { BC_MAX_MV = (1 << 15) };
enum { BC_MAX_QP = 82 };
float *s_bitsizes;
uint16_t *s_costs[BC_MAX_QP];
uint16_t *s_fpelMvCosts[BC_MAX_QP][4];
Lock s_costCalcLock;
void CalculateLogs();
};
}
#endif // ifndef X265_BITCOST_H
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