x265-1.8版本-common/yuv.h注释

注:问号以及未注释部分 会在x265-1.9版本内更新

/*****************************************************************************
 * Copyright (C) 2015 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_YUV_H
#define X265_YUV_H

#include "common.h"
#include "primitives.h"

namespace X265_NS {
// private namespace

class ShortYuv;
class PicYuv;

/* A Yuv instance holds pixels for a square CU (64x64 down to 8x8) for all three planes
 * these are typically used to hold fenc, predictions, or reconstructed blocks */
class Yuv
{
public:

    pixel*   m_buf[3];       //存储空间

    uint32_t m_size;         //当前yuv的size大小,一般是一个CTU 大小为64
    uint32_t m_csize;        //当前yuv色度的size大小,一般是一个CTU 大小为64
    int      m_part;         // cached partition enum size 当前块标号:如:LUMA_4x4,   LUMA_8x8,   LUMA_16x16, LUMA_32x32, LUMA_64x64....

    int      m_csp;          //图像格式 420、444:400
    int      m_hChromaShift; //根据图像格式,色度宽度需要移位个数 如420格式 就是1
    int      m_vChromaShift; //根据图像格式,色度高度需要移位个数 如420格式 就是1
    /** 函数功能    :初始化YUV
    * \返回值       :null */
    Yuv(); 
    /** 函数功能   : 初始化数据,并申请空间内存
    /*\参数    size: 申请空间大小的size
    * \参数     csp:  图像格式
    * \返回        : 是否申请内存成功 */
    bool   create(uint32_t size, int csp);
    /** 函数功能   : 释放空间内存
    * \返回        : null */
    void   destroy();

    // Copy YUV buffer to picture buffer
    void   copyToPicYuv(PicYuv& destPicYuv, uint32_t cuAddr, uint32_t absPartIdx) const;

    // Copy YUV buffer from picture buffer
    void   copyFromPicYuv(const PicYuv& srcPicYuv, uint32_t cuAddr, uint32_t absPartIdx);

    // Copy from same size YUV buffer
    void   copyFromYuv(const Yuv& srcYuv);

    // Copy portion of srcYuv into ME prediction buffer
    void   copyPUFromYuv(const Yuv& srcYuv, uint32_t absPartIdx, int partEnum, bool bChroma);

    // Copy Small YUV buffer to the part of other Big YUV buffer
    /** 函数功能       : 将源数据按照标号位置的部分copy到目标yuv中
    * \参数 dstYuv     : 目标yuv存储地址
    * \参数 absPartIdx : 当前CU在LCU中4x4 zizag地址
    *   返回值         : null**/
    void   copyToPartYuv(Yuv& dstYuv, uint32_t absPartIdx) const;

    // Copy the part of Big YUV buffer to other Small YUV buffer
    void   copyPartToYuv(Yuv& dstYuv, uint32_t absPartIdx) const;

    // Clip(srcYuv0 + srcYuv1) -> m_buf .. aka recon = clip(pred + residual)
    void   addClip(const Yuv& srcYuv0, const ShortYuv& srcYuv1, uint32_t log2SizeL);

    // (srcYuv0 + srcYuv1)/2 for YUV partition (bidir averaging)
    void   addAvg(const ShortYuv& srcYuv0, const ShortYuv& srcYuv1, uint32_t absPartIdx, uint32_t width, uint32_t height, bool bLuma, bool bChroma);

    void copyPartToPartLuma(Yuv& dstYuv, uint32_t absPartIdx, uint32_t log2Size) const;
    void copyPartToPartChroma(Yuv& dstYuv, uint32_t absPartIdx, uint32_t log2SizeL) const;
    /** 函数功能       : 获取当前亮度当前PU的地址
    * \参数 absPartIdx : 当前块相对于当前CU的zigzag标号
    *   返回值         : 返回当前亮度当前PU的地址**/
    pixel* getLumaAddr(uint32_t absPartIdx)                      { return m_buf[0] + getAddrOffset(absPartIdx, m_size); }
    /** 函数功能       : 获取当前色度当前PU的地址
    * \参数 absPartIdx : 当前块相对于当前CU的zigzag标号
    *   返回值         : 返回当前色度当前PU的地址**/
    pixel* getCbAddr(uint32_t absPartIdx)                        { return m_buf[1] + getChromaAddrOffset(absPartIdx); }
    /** 函数功能       : 获取当前色度当前PU的地址
    * \参数 absPartIdx : 当前块相对于当前CU的zigzag标号
    *   返回值         : 返回当前色度当前PU的地址**/
    pixel* getCrAddr(uint32_t absPartIdx)                        { return m_buf[2] + getChromaAddrOffset(absPartIdx); }
    pixel* getChromaAddr(uint32_t chromaId, uint32_t absPartIdx) { return m_buf[chromaId] + getChromaAddrOffset(absPartIdx); }
    /** 函数功能       : 获取当前亮度当前PU的地址
    * \参数 absPartIdx : 当前块相对于当前CU的zigzag标号
    *   返回值         : 返回当前亮度当前PU的地址**/
    const pixel* getLumaAddr(uint32_t absPartIdx) const                      { return m_buf[0] + getAddrOffset(absPartIdx, m_size); }
    const pixel* getCbAddr(uint32_t absPartIdx) const                        { return m_buf[1] + getChromaAddrOffset(absPartIdx); }
    const pixel* getCrAddr(uint32_t absPartIdx) const                        { return m_buf[2] + getChromaAddrOffset(absPartIdx); }
    const pixel* getChromaAddr(uint32_t chromaId, uint32_t absPartIdx) const { return m_buf[chromaId] + getChromaAddrOffset(absPartIdx); }
    /** 函数功能       : 获取当前块左上角zigzag标号位置相对当前CU首地址的色度偏移量
    * \参数 absPartIdx : 当前块相对于当前CU的zigzag标号
    * \参数 width      : yuv的宽度(可以理解为步长)
    *   返回值         : 返回当前块左上角zigzag标号位置相对当前CU首地址的色度偏移量**/
    int getChromaAddrOffset(uint32_t absPartIdx) const
    {
        int blkX = g_zscanToPelX[absPartIdx] >> m_hChromaShift;
        int blkY = g_zscanToPelY[absPartIdx] >> m_vChromaShift;

        return blkX + blkY * m_csize;
    }
    /** 函数功能       : 获取当前块左上角zigzag标号位置相对当前CU首地址的偏移量
    * \参数 absPartIdx : 当前块相对于当前CU的zigzag标号
    * \参数 width      : yuv的宽度(可以理解为步长)
    *   返回值         : 返回当前块左上角zigzag标号位置相对当前CU首地址的偏移量**/
    static int getAddrOffset(uint32_t absPartIdx, uint32_t width)
    {
        int blkX = g_zscanToPelX[absPartIdx];
        int blkY = g_zscanToPelY[absPartIdx];

        return blkX + blkY * width;
    }
};
}

#endif


 

brut.androlib.AndrolibException: brut.common.BrutException: could not exec (exit code = 1): [aapt, p, --min-sdk-version, 21, --target-sdk-version, 33, --version-code, 448, --version-name, 7.22.10, --no-version-vectors, -F, /tmp/APKTOOL842676252074525268.tmp, -0, resources.arsc, -0, META-INF/androidx.activity_activity.version, -0, META-INF/androidx.annotation_annotation-experimental.version, -0, META-INF/androidx.appcompat_appcompat-resources.version, -0, META-INF/androidx.appcompat_appcompat.version, -0, META-INF/androidx.arch.core_core-runtime.version, -0, META-INF/androidx.asynclayoutinflater_asynclayoutinflater.version, -0, META-INF/androidx.cardview_cardview.version, -0, META-INF/androidx.coordinatorlayout_coordinatorlayout.version, -0, META-INF/androidx.core_core.version, -0, META-INF/androidx.cursoradapter_cursoradapter.version, -0, META-INF/androidx.customview_customview.version, -0, META-INF/androidx.databinding_viewbinding.version, -0, 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最新发布
07-30
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