forked from mirror/libbpg
165 lines
5.6 KiB
C++
165 lines
5.6 KiB
C++
/*****************************************************************************
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* Copyright (C) 2013 x265 project
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*
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* Authors: Gopu Govindaswamy <gopu@multicorewareinc.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
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*
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* This program is also available under a commercial proprietary license.
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* For more information, contact us at license @ x265.com.
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*****************************************************************************/
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#include "picyuv.h"
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#include "lowres.h"
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#include "mv.h"
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using namespace X265_NS;
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bool Lowres::create(PicYuv *origPic, int _bframes, bool bAQEnabled)
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{
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isLowres = true;
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bframes = _bframes;
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width = origPic->m_picWidth / 2;
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lines = origPic->m_picHeight / 2;
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lumaStride = width + 2 * origPic->m_lumaMarginX;
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if (lumaStride & 31)
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lumaStride += 32 - (lumaStride & 31);
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maxBlocksInRow = (width + X265_LOWRES_CU_SIZE - 1) >> X265_LOWRES_CU_BITS;
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maxBlocksInCol = (lines + X265_LOWRES_CU_SIZE - 1) >> X265_LOWRES_CU_BITS;
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int cuCount = maxBlocksInRow * maxBlocksInCol;
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/* rounding the width to multiple of lowres CU size */
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width = maxBlocksInRow * X265_LOWRES_CU_SIZE;
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lines = maxBlocksInCol * X265_LOWRES_CU_SIZE;
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size_t planesize = lumaStride * (lines + 2 * origPic->m_lumaMarginY);
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size_t padoffset = lumaStride * origPic->m_lumaMarginY + origPic->m_lumaMarginX;
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if (bAQEnabled)
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{
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CHECKED_MALLOC(qpAqOffset, double, cuCount);
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CHECKED_MALLOC(invQscaleFactor, int, cuCount);
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CHECKED_MALLOC(qpCuTreeOffset, double, cuCount);
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}
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CHECKED_MALLOC(propagateCost, uint16_t, cuCount);
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/* allocate lowres buffers */
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CHECKED_MALLOC_ZERO(buffer[0], pixel, 4 * planesize);
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buffer[1] = buffer[0] + planesize;
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buffer[2] = buffer[1] + planesize;
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buffer[3] = buffer[2] + planesize;
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lowresPlane[0] = buffer[0] + padoffset;
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lowresPlane[1] = buffer[1] + padoffset;
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lowresPlane[2] = buffer[2] + padoffset;
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lowresPlane[3] = buffer[3] + padoffset;
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CHECKED_MALLOC(intraCost, int32_t, cuCount);
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CHECKED_MALLOC(intraMode, uint8_t, cuCount);
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for (int i = 0; i < bframes + 2; i++)
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{
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for (int j = 0; j < bframes + 2; j++)
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{
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CHECKED_MALLOC(rowSatds[i][j], int32_t, maxBlocksInCol);
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CHECKED_MALLOC(lowresCosts[i][j], uint16_t, cuCount);
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}
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}
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for (int i = 0; i < bframes + 1; i++)
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{
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CHECKED_MALLOC(lowresMvs[0][i], MV, cuCount);
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CHECKED_MALLOC(lowresMvs[1][i], MV, cuCount);
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CHECKED_MALLOC(lowresMvCosts[0][i], int32_t, cuCount);
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CHECKED_MALLOC(lowresMvCosts[1][i], int32_t, cuCount);
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}
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return true;
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fail:
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return false;
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}
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void Lowres::destroy()
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{
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X265_FREE(buffer[0]);
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X265_FREE(intraCost);
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X265_FREE(intraMode);
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for (int i = 0; i < bframes + 2; i++)
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{
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for (int j = 0; j < bframes + 2; j++)
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{
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X265_FREE(rowSatds[i][j]);
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X265_FREE(lowresCosts[i][j]);
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}
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}
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for (int i = 0; i < bframes + 1; i++)
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{
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X265_FREE(lowresMvs[0][i]);
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X265_FREE(lowresMvs[1][i]);
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X265_FREE(lowresMvCosts[0][i]);
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X265_FREE(lowresMvCosts[1][i]);
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}
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X265_FREE(qpAqOffset);
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X265_FREE(invQscaleFactor);
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X265_FREE(qpCuTreeOffset);
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X265_FREE(propagateCost);
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}
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// (re) initialize lowres state
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void Lowres::init(PicYuv *origPic, int poc)
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{
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bLastMiniGopBFrame = false;
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bScenecut = false; // could be a scene-cut, until ruled out by flash detection
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bKeyframe = false; // Not a keyframe unless identified by lookahead
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frameNum = poc;
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leadingBframes = 0;
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indB = 0;
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satdCost = (int64_t)-1;
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memset(costEst, -1, sizeof(costEst));
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memset(weightedCostDelta, 0, sizeof(weightedCostDelta));
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if (qpAqOffset && invQscaleFactor)
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memset(costEstAq, -1, sizeof(costEstAq));
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for (int y = 0; y < bframes + 2; y++)
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for (int x = 0; x < bframes + 2; x++)
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rowSatds[y][x][0] = -1;
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for (int i = 0; i < bframes + 1; i++)
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{
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lowresMvs[0][i][0].x = 0x7FFF;
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lowresMvs[1][i][0].x = 0x7FFF;
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}
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for (int i = 0; i < bframes + 2; i++)
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intraMbs[i] = 0;
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/* downscale and generate 4 hpel planes for lookahead */
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primitives.frameInitLowres(origPic->m_picOrg[0],
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lowresPlane[0], lowresPlane[1], lowresPlane[2], lowresPlane[3],
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origPic->m_stride, lumaStride, width, lines);
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/* extend hpel planes for motion search */
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extendPicBorder(lowresPlane[0], lumaStride, width, lines, origPic->m_lumaMarginX, origPic->m_lumaMarginY);
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extendPicBorder(lowresPlane[1], lumaStride, width, lines, origPic->m_lumaMarginX, origPic->m_lumaMarginY);
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extendPicBorder(lowresPlane[2], lumaStride, width, lines, origPic->m_lumaMarginX, origPic->m_lumaMarginY);
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extendPicBorder(lowresPlane[3], lumaStride, width, lines, origPic->m_lumaMarginX, origPic->m_lumaMarginY);
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fpelPlane[0] = lowresPlane[0];
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}
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