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/*****************************************************************************
* Copyright (C) 2013-2020 MulticoreWare, Inc
*
* Authors: Steve Borho <steve@borho.org>
* Deepthi Devaki <deepthidevaki@multicorewareinc.com>
* Min Chen <chenm003@163.com>
*
* 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.
*****************************************************************************/
#include "common.h"
#include "primitives.h"
#include "slice.h"
#include "picyuv.h"
#include "reference.h"
using namespace X265_NS;
MotionReference::MotionReference()
{
weightBuffer[0] = NULL;
weightBuffer[1] = NULL;
weightBuffer[2] = NULL;
numSliceWeightedRows = NULL;
}
MotionReference::~MotionReference()
{
X265_FREE(numSliceWeightedRows);
X265_FREE(weightBuffer[0]);
X265_FREE(weightBuffer[1]);
X265_FREE(weightBuffer[2]);
}
int MotionReference::init(PicYuv* recPic, WeightParam *wp, const x265_param& p)
{
reconPic = recPic;
lumaStride = recPic->m_stride;
chromaStride = recPic->m_strideC;
numInterpPlanes = p.subpelRefine > 2 ? 3 : 1; /* is chroma satd possible? */
if (numSliceWeightedRows)
{
// Unnecessary, but avoid risk on parameters dynamic modify in future.
X265_FREE(numSliceWeightedRows);
numSliceWeightedRows = NULL;
}
numSliceWeightedRows = X265_MALLOC(uint32_t, p.maxSlices);
memset(numSliceWeightedRows, 0, p.maxSlices * sizeof(uint32_t));
/* directly reference the extended integer pel planes */
fpelPlane[0] = recPic->m_picOrg[0];
fpelPlane[1] = recPic->m_picOrg[1];
fpelPlane[2] = recPic->m_picOrg[2];
isWeighted = false;
if (wp)
{
uint32_t numCUinHeight = (reconPic->m_picHeight + p.maxCUSize - 1) / p.maxCUSize;
int marginX = reconPic->m_lumaMarginX;
int marginY = reconPic->m_lumaMarginY;
intptr_t stride = reconPic->m_stride;
int cuHeight = p.maxCUSize;
for (int c = 0; c < (p.internalCsp != X265_CSP_I400 && recPic->m_picCsp != X265_CSP_I400 ? numInterpPlanes : 1); c++)
{
if (c == 1)
{
marginX = reconPic->m_chromaMarginX;
marginY = reconPic->m_chromaMarginY;
stride = reconPic->m_strideC;
cuHeight >>= reconPic->m_vChromaShift;
}
if (wp[c].wtPresent)
{
if (!weightBuffer[c])
{
size_t padheight = (numCUinHeight * cuHeight) + marginY * 2;
weightBuffer[c] = X265_MALLOC(pixel, stride * padheight);
if (!weightBuffer[c])
return -1;
}
/* use our buffer which will have weighted pixels written to it */
fpelPlane[c] = weightBuffer[c] + marginY * stride + marginX;
X265_CHECK(recPic->m_picOrg[c] - recPic->m_picBuf[c] == marginY * stride + marginX, "PicYuv pad calculation mismatch\n");
w[c].weight = wp[c].inputWeight;
w[c].offset = wp[c].inputOffset * (1 << (X265_DEPTH - 8));
w[c].shift = wp[c].log2WeightDenom;
w[c].round = w[c].shift ? 1 << (w[c].shift - 1) : 0;
}
}
isWeighted = true;
}
return 0;
}
void MotionReference::applyWeight(uint32_t finishedRows, uint32_t maxNumRows, uint32_t maxNumRowsInSlice, uint32_t sliceId)
{
const uint32_t numWeightedRows = numSliceWeightedRows[sliceId];
finishedRows = X265_MIN(finishedRows, maxNumRowsInSlice);
if (numWeightedRows >= finishedRows)
return;
int marginX = reconPic->m_lumaMarginX;
int marginY = reconPic->m_lumaMarginY;
intptr_t stride = reconPic->m_stride;
int width = reconPic->m_picWidth;
int height = (finishedRows - numWeightedRows) * reconPic->m_param->maxCUSize;
/* the last row may be partial height */
if (finishedRows == maxNumRows - 1)
{
const int leftRows = (reconPic->m_picHeight & (reconPic->m_param->maxCUSize - 1));
height += leftRows ? leftRows : reconPic->m_param->maxCUSize;
}
int cuHeight = reconPic->m_param->maxCUSize;
for (int c = 0; c < numInterpPlanes; c++)
{
if (c == 1)
{
marginX = reconPic->m_chromaMarginX;
marginY = reconPic->m_chromaMarginY;
stride = reconPic->m_strideC;
width >>= reconPic->m_hChromaShift;
height >>= reconPic->m_vChromaShift;
cuHeight >>= reconPic->m_vChromaShift;
}
/* Do not generate weighted predictions if using original picture */
if (fpelPlane[c] == reconPic->m_picOrg[c])
continue;
const pixel* src = reconPic->m_picOrg[c] + numWeightedRows * cuHeight * stride;
pixel* dst = fpelPlane[c] + numWeightedRows * cuHeight * stride;
// Computing weighted CU rows
int correction = IF_INTERNAL_PREC - X265_DEPTH; // intermediate interpolation depth
int padwidth = (width + 31) & ~31; // weightp assembly needs even 32 byte widths
primitives.weight_pp(src, dst, stride, padwidth, height, w[c].weight, w[c].round << correction, w[c].shift + correction, w[c].offset);
// Extending Left & Right
primitives.extendRowBorder(dst, stride, width, height, marginX);
// Extending Above
if (numWeightedRows == 0)
{
pixel *pixY = fpelPlane[c] - marginX;
for (int y = 0; y < marginY; y++)
memcpy(pixY - (y + 1) * stride, pixY, stride * sizeof(pixel));
}
// Extending Bottom
if (finishedRows == maxNumRows - 1)
{
int picHeight = reconPic->m_picHeight;
if (c) picHeight >>= reconPic->m_vChromaShift;
pixel *pixY = fpelPlane[c] - marginX + (picHeight - 1) * stride;
for (int y = 0; y < marginY; y++)
memcpy(pixY + (y + 1) * stride, pixY, stride * sizeof(pixel));
}
}
numSliceWeightedRows[sliceId] = finishedRows;
}
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