--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/x265/source/encoder/bitcost.h	Wed Nov 16 11:16:33 2016 +0200
@@ -0,0 +1,93 @@
+/*****************************************************************************
+ * 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_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) {}
+
+    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[abs(mv.x - m_mvp.x)] +
+                          s_bitsizes[abs(mv.y - m_mvp.y)] + 0.5f);
+    }
+
+    static inline uint32_t bitcost(const MV& mv, const MV& mvp)
+    {
+        return (uint32_t)(s_bitsizes[abs(mv.x - mvp.x)] +
+                          s_bitsizes[abs(mv.y - mvp.y)] + 0.5f);
+    }
+
+    static void destroy();
+
+protected:
+
+    uint16_t *m_cost_mvx;
+
+    uint16_t *m_cost_mvy;
+
+    uint16_t *m_cost;
+
+    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 };
+
+    static float *s_bitsizes;
+
+    static uint16_t *s_costs[BC_MAX_QP];
+
+    static Lock s_costCalcLock;
+
+    static void CalculateLogs();
+};
+}
+
+#endif // ifndef X265_BITCOST_H