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libbpg-0.9.6

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King_DuckZ 2015-10-27 11:46:00 +01:00
parent 3035b41edf
commit 35a8402710
248 changed files with 232891 additions and 100 deletions
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x265/source/common/lowres.cpp Normal file
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/*****************************************************************************
* Copyright (C) 2013 x265 project
*
* Authors: Gopu Govindaswamy <gopu@multicorewareinc.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 "picyuv.h"
#include "lowres.h"
#include "mv.h"
using namespace X265_NS;
bool Lowres::create(PicYuv *origPic, int _bframes, bool bAQEnabled)
{
isLowres = true;
bframes = _bframes;
width = origPic->m_picWidth / 2;
lines = origPic->m_picHeight / 2;
lumaStride = width + 2 * origPic->m_lumaMarginX;
if (lumaStride & 31)
lumaStride += 32 - (lumaStride & 31);
maxBlocksInRow = (width + X265_LOWRES_CU_SIZE - 1) >> X265_LOWRES_CU_BITS;
maxBlocksInCol = (lines + X265_LOWRES_CU_SIZE - 1) >> X265_LOWRES_CU_BITS;
int cuCount = maxBlocksInRow * maxBlocksInCol;
/* rounding the width to multiple of lowres CU size */
width = maxBlocksInRow * X265_LOWRES_CU_SIZE;
lines = maxBlocksInCol * X265_LOWRES_CU_SIZE;
size_t planesize = lumaStride * (lines + 2 * origPic->m_lumaMarginY);
size_t padoffset = lumaStride * origPic->m_lumaMarginY + origPic->m_lumaMarginX;
if (bAQEnabled)
{
CHECKED_MALLOC(qpAqOffset, double, cuCount);
CHECKED_MALLOC(invQscaleFactor, int, cuCount);
CHECKED_MALLOC(qpCuTreeOffset, double, cuCount);
}
CHECKED_MALLOC(propagateCost, uint16_t, cuCount);
/* allocate lowres buffers */
CHECKED_MALLOC_ZERO(buffer[0], pixel, 4 * planesize);
buffer[1] = buffer[0] + planesize;
buffer[2] = buffer[1] + planesize;
buffer[3] = buffer[2] + planesize;
lowresPlane[0] = buffer[0] + padoffset;
lowresPlane[1] = buffer[1] + padoffset;
lowresPlane[2] = buffer[2] + padoffset;
lowresPlane[3] = buffer[3] + padoffset;
CHECKED_MALLOC(intraCost, int32_t, cuCount);
CHECKED_MALLOC(intraMode, uint8_t, cuCount);
for (int i = 0; i < bframes + 2; i++)
{
for (int j = 0; j < bframes + 2; j++)
{
CHECKED_MALLOC(rowSatds[i][j], int32_t, maxBlocksInCol);
CHECKED_MALLOC(lowresCosts[i][j], uint16_t, cuCount);
}
}
for (int i = 0; i < bframes + 1; i++)
{
CHECKED_MALLOC(lowresMvs[0][i], MV, cuCount);
CHECKED_MALLOC(lowresMvs[1][i], MV, cuCount);
CHECKED_MALLOC(lowresMvCosts[0][i], int32_t, cuCount);
CHECKED_MALLOC(lowresMvCosts[1][i], int32_t, cuCount);
}
return true;
fail:
return false;
}
void Lowres::destroy()
{
X265_FREE(buffer[0]);
X265_FREE(intraCost);
X265_FREE(intraMode);
for (int i = 0; i < bframes + 2; i++)
{
for (int j = 0; j < bframes + 2; j++)
{
X265_FREE(rowSatds[i][j]);
X265_FREE(lowresCosts[i][j]);
}
}
for (int i = 0; i < bframes + 1; i++)
{
X265_FREE(lowresMvs[0][i]);
X265_FREE(lowresMvs[1][i]);
X265_FREE(lowresMvCosts[0][i]);
X265_FREE(lowresMvCosts[1][i]);
}
X265_FREE(qpAqOffset);
X265_FREE(invQscaleFactor);
X265_FREE(qpCuTreeOffset);
X265_FREE(propagateCost);
}
// (re) initialize lowres state
void Lowres::init(PicYuv *origPic, int poc)
{
bLastMiniGopBFrame = false;
bScenecut = false; // could be a scene-cut, until ruled out by flash detection
bKeyframe = false; // Not a keyframe unless identified by lookahead
frameNum = poc;
leadingBframes = 0;
indB = 0;
satdCost = (int64_t)-1;
memset(costEst, -1, sizeof(costEst));
memset(weightedCostDelta, 0, sizeof(weightedCostDelta));
if (qpAqOffset && invQscaleFactor)
memset(costEstAq, -1, sizeof(costEstAq));
for (int y = 0; y < bframes + 2; y++)
for (int x = 0; x < bframes + 2; x++)
rowSatds[y][x][0] = -1;
for (int i = 0; i < bframes + 1; i++)
{
lowresMvs[0][i][0].x = 0x7FFF;
lowresMvs[1][i][0].x = 0x7FFF;
}
for (int i = 0; i < bframes + 2; i++)
intraMbs[i] = 0;
/* downscale and generate 4 hpel planes for lookahead */
primitives.frameInitLowres(origPic->m_picOrg[0],
lowresPlane[0], lowresPlane[1], lowresPlane[2], lowresPlane[3],
origPic->m_stride, lumaStride, width, lines);
/* extend hpel planes for motion search */
extendPicBorder(lowresPlane[0], lumaStride, width, lines, origPic->m_lumaMarginX, origPic->m_lumaMarginY);
extendPicBorder(lowresPlane[1], lumaStride, width, lines, origPic->m_lumaMarginX, origPic->m_lumaMarginY);
extendPicBorder(lowresPlane[2], lumaStride, width, lines, origPic->m_lumaMarginX, origPic->m_lumaMarginY);
extendPicBorder(lowresPlane[3], lumaStride, width, lines, origPic->m_lumaMarginX, origPic->m_lumaMarginY);
fpelPlane[0] = lowresPlane[0];
}