/src/vvdec/source/Lib/CommonLib/Buffer.h

Source
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/** \file     Buffer.h
 *  \brief    Low-overhead class describing 2D memory layout
 */

#pragma once

#include "Common.h"
#include "CommonDef.h"
#include "ChromaFormat.h"
#include "MotionInfo.h"

#include <string.h>
#include <type_traits>
#include <utility>

namespace vvdec
{

struct CodingUnit;

#if ENABLE_SIMD_OPT_BUFFER && defined(TARGET_SIMD_X86)
using namespace x86_simd;
#endif
#if ENABLE_SIMD_OPT_BUFFER && defined(TARGET_SIMD_ARM)
using namespace arm_simd;
#endif

struct PelBufferOps
{
  PelBufferOps();

#if defined( TARGET_SIMD_X86 ) && ENABLE_SIMD_OPT_BUFFER
  void initPelBufOpsX86();
  template<X86_VEXT vext>
  void _initPelBufOpsX86();
#endif

#if defined( TARGET_SIMD_ARM ) && ENABLE_SIMD_OPT_BUFFER
  void initPelBufOpsARM();
  template<ARM_VEXT vext>
  void _initPelBufOpsARM();
#endif

  void ( *addAvg4 )       ( const Pel* src0, ptrdiff_t src0Stride, const Pel* src1, ptrdiff_t src1Stride, Pel *dst, ptrdiff_t dstStride, int width, int height,            int shift, int offset,      const ClpRng& clpRng );
  void ( *addAvg8 )       ( const Pel* src0, ptrdiff_t src0Stride, const Pel* src1, ptrdiff_t src1Stride, Pel *dst, ptrdiff_t dstStride, int width, int height,            int shift, int offset,      const ClpRng& clpRng );
  void ( *addAvg16 )      ( const Pel* src0, ptrdiff_t src0Stride, const Pel* src1, ptrdiff_t src1Stride, Pel *dst, ptrdiff_t dstStride, int width, int height,            int shift, int offset,      const ClpRng& clpRng );
  void ( *reco4 )         ( const Pel* src0, ptrdiff_t src0Stride, const Pel* src1, ptrdiff_t src1Stride, Pel *dst, ptrdiff_t dstStride, int width, int height,                                        const ClpRng& clpRng );
  void ( *reco8 )         ( const Pel* src0, ptrdiff_t src0Stride, const Pel* src1, ptrdiff_t src1Stride, Pel *dst, ptrdiff_t dstStride, int width, int height,                                        const ClpRng& clpRng );
  void ( *linTf4 )        ( const Pel* src0, ptrdiff_t src0Stride,                                        Pel *dst, ptrdiff_t dstStride, int width, int height, int scale, int shift, int offset,      const ClpRng& clpRng, bool bClip );
  void ( *linTf8 )        ( const Pel* src0, ptrdiff_t src0Stride,                                        Pel *dst, ptrdiff_t dstStride, int width, int height, int scale, int shift, int offset,      const ClpRng& clpRng, bool bClip );
  void ( *wghtAvg4 )      ( const Pel* src0, ptrdiff_t src0Stride, const Pel* src1, ptrdiff_t src1Stride, Pel *dst, ptrdiff_t dstStride, int width, int height, int shift, int offset, int w0, int w1, const ClpRng& clpRng );
  void ( *wghtAvg8 )      ( const Pel* src0, ptrdiff_t src0Stride, const Pel* src1, ptrdiff_t src1Stride, Pel *dst, ptrdiff_t dstStride, int width, int height, int shift, int offset, int w0, int w1, const ClpRng& clpRng );
  void ( *copyBuffer  )    ( const char*src,  ptrdiff_t srcStride,        char* dst, ptrdiff_t  dstStride,                                int width, int height );
  void ( *transpose4x4 )  ( const Pel* src,  ptrdiff_t srcStride, Pel* dst, ptrdiff_t dstStride );
  void ( *transpose8x8 )  ( const Pel* src,  ptrdiff_t srcStride, Pel* dst, ptrdiff_t dstStride );
  void ( *applyLut )      (       Pel* ptr,  ptrdiff_t ptrStride, int width, int height, const Pel* lut );
  void ( *rspFwd )        (       Pel* ptr,  ptrdiff_t ptrStride, int width, int height, const int bd,                   const Pel OrgCW,  const Pel* LmcsPivot, const Pel* ScaleCoeff, const Pel* InputPivot );
  void ( *rspBcw )        (       Pel* ptr,  ptrdiff_t ptrStride, int width, int height, const int bd, const int minBin, const int maxBin, const Pel* LmcsPivot, const Pel* InvScCoeff, const Pel* InputPivot );
  void ( *fillN_CU )      (       CodingUnit** ptr, ptrdiff_t ptrStride, int width, int height, CodingUnit* cuPtr );

  void (*sampleRateConv)  ( const std::pair<int, int> scalingRatio, const std::pair<int, int> compScale,
                            const Pel* orgSrc, const ptrdiff_t orgStride, const int orgWidth, const int orgHeight,
                            const int beforeScaleLeftOffset, const int beforeScaleTopOffset,
                            Pel* scaledSrc, const ptrdiff_t scaledStride, const int scaledWidth, const int scaledHeight,
                            const int afterScaleLeftOffset, const int afterScaleTopOffset,
                            const int bitDepth, const bool useLumaFilter, const bool horCollocatedPositionFlag, const bool verCollocatedPositionFlag );
};

extern PelBufferOps g_pelBufOP;

void sampleRateConvCore( const std::pair<int, int> scalingRatio, const std::pair<int, int> compScale,
                         const Pel* orgSrc, const ptrdiff_t orgStride, const int orgWidth, const int orgHeight,
                         const int beforeScaleLeftOffset, const int beforeScaleTopOffset,
                         Pel* scaledSrc, const ptrdiff_t scaledStride, const int scaledWidth, const int scaledHeight,
                         const int afterScaleLeftOffset, const int afterScaleTopOffset,
                         const int bitDepth, const bool useLumaFilter,
                         const bool horCollocatedPositionFlag, const bool verCollocatedPositionFlag );

#define INCX( ptr, stride ) { ptr++; }
#define INCY( ptr, stride ) { ptr += ( stride ); }
#define OFFSETX( ptr, stride, x ) { ptr += ( x ); }
#define OFFSETY( ptr, stride, y ) { ptr += ( y ) * ( stride ); }
#define OFFSET( ptr, stride, x, y ) { ptr += ( x ) + ( y ) * ( stride ); }
#define GET_OFFSETX( ptr, stride, x ) ( ( ptr ) + ( x ) )
#define GET_OFFSETY( ptr, stride, y ) ( ( ptr ) + ( y ) * ( stride ) )
#define GET_OFFSET( ptr, stride, x, y ) ( ( ptr ) + ( x ) + ( y ) * ( stride ) )

class Window;
struct BitDepths;

template<typename T>
struct AreaBuf : public Size
{
  T*        buf;
  ptrdiff_t stride;

  AreaBuf()                                                                                     : Size(),                  buf( NULL ), stride( 0 )          { }
  AreaBuf( T *_buf, const Size &size )                                                          : Size( size ),            buf( _buf ), stride( size.width ) { }
  AreaBuf( T *_buf, const ptrdiff_t &_stride, const Size &size )                                : Size( size ),            buf( _buf ), stride( _stride )    { }
  AreaBuf( T *_buf, const SizeType &_width, const SizeType &_height )                           : Size( _width, _height ), buf( _buf ), stride( _width )     { }
  AreaBuf( T *_buf, const ptrdiff_t &_stride, const SizeType &_width, const SizeType &_height ) : Size( _width, _height ), buf( _buf ), stride( _stride )    { }

  AreaBuf( const AreaBuf& )  = default;
  AreaBuf(       AreaBuf&& ) = default;
  AreaBuf& operator=( const AreaBuf& )  = default;
  AreaBuf& operator=(       AreaBuf&& ) = default;

  // conversion from AreaBuf<const T> to AreaBuf<T>
  template<bool T_IS_CONST = std::is_const<T>::value>
  AreaBuf( const AreaBuf<typename std::remove_const_t<T>>& other, std::enable_if_t<T_IS_CONST>* = 0) : Size( other ), buf( other.buf ), stride( other.stride ) { }

  void fill                 ( const T &val );
  void memset               ( const int val );

  void copyFrom             ( const AreaBuf<const T> &other );
  
  void reconstruct          ( const AreaBuf<const T> &pred, const AreaBuf<const T> &resi, const ClpRng& clpRng);
  
  void subtract             ( const AreaBuf<const T> &other );
  void extendBorderPel      ( unsigned margin );
  void extendBorderPel      ( unsigned margin, bool left, bool right, bool top, bool bottom );
  void addWeightedAvg       ( const AreaBuf<const T> &other1, const AreaBuf<const T> &other2, const ClpRng& clpRng, const int8_t bcwIdx);
  void addAvg               ( const AreaBuf<const T> &other1, const AreaBuf<const T> &other2, const ClpRng& clpRng );
  void padBorderPel         ( unsigned marginX, unsigned marginY, int dir );
  
  void linearTransform      ( const int scale, const int shift, const int offset, bool bClip, const ClpRng& clpRng );

  void transposedFrom       ( const AreaBuf<const T> &other );

  void scaleSignal          ( const int scale, const ClpRng& clpRng );

        T& at( const int &x, const int &y )          { return buf[y * stride + x]; }
  const T& at( const int &x, const int &y ) const    { return buf[y * stride + x]; }

        T& at( const Position &pos )                 { return buf[pos.y * stride + pos.x]; }
  const T& at( const Position &pos ) const           { return buf[pos.y * stride + pos.x]; }


        T* bufAt( const int &x, const int &y )       { return GET_OFFSET( buf, stride,     x,     y ); }
  const T* bufAt( const int &x, const int &y ) const { return GET_OFFSET( buf, stride,     x,     y ); }
        T* bufAt( const Position& pos )              { return GET_OFFSET( buf, stride, pos.x, pos.y ); }
  const T* bufAt( const Position& pos ) const        { return GET_OFFSET( buf, stride, pos.x, pos.y ); }

  AreaBuf<      T> subBuf( const Area &area )                                                         { return subBuf( area.pos(), area.size() ); }
  AreaBuf<const T> subBuf( const Area &area )                                                   const { return subBuf( area.pos(), area.size() ); }
  AreaBuf<      T> subBuf( const Position &pos, const Size &size )                                    { return AreaBuf<      T>( bufAt( pos  ), stride, size   ); }
  AreaBuf<const T> subBuf( const Position &pos, const Size &size )                              const { return AreaBuf<const T>( bufAt( pos  ), stride, size   ); }
  AreaBuf<      T> subBuf( const int &x, const int &y, const unsigned &_w, const unsigned &_h )       { return AreaBuf<      T>( bufAt( x, y ), stride, _w, _h ); }
  AreaBuf<const T> subBuf( const int &x, const int &y, const unsigned &_w, const unsigned &_h ) const { return AreaBuf<const T>( bufAt( x, y ), stride, _w, _h ); }
};

typedef AreaBuf<      Pel>  PelBuf;
typedef AreaBuf<const Pel> CPelBuf;

typedef AreaBuf<      TCoeff>  CoeffBuf;
typedef AreaBuf<const TCoeff> CCoeffBuf;

typedef AreaBuf<TCoeffSig>        CoeffSigBuf;
typedef AreaBuf<const TCoeffSig> CCoeffSigBuf;

typedef AreaBuf<      MotionInfo>  MotionBuf;
typedef AreaBuf<const MotionInfo> CMotionBuf;

typedef AreaBuf<      LoopFilterParam>  LFPBuf;
typedef AreaBuf<const LoopFilterParam> CLFPBuf;

#define SIZE_AWARE_PER_EL_OP( OP, INC )                     \
if( ( width & 7 ) == 0 )                                    \
{                                                           \
  for( int y = 0; y < height; y++ )                         \
  {                                                         \
    for( int x = 0; x < width; x += 8 )                     \
    {                                                       \
      OP( x + 0 );                                          \
      OP( x + 1 );                                          \
      OP( x + 2 );                                          \
      OP( x + 3 );                                          \
      OP( x + 4 );                                          \
      OP( x + 5 );                                          \
      OP( x + 6 );                                          \
      OP( x + 7 );                                          \
    }                                                       \
                                                            \
    INC;                                                    \
  }                                                         \
}                                                           \
else if( ( width & 3 ) == 0 )                               \
{                                                           \
  for( int y = 0; y < height; y++ )                         \
  {                                                         \
    for( int x = 0; x < width; x += 4 )                     \
    {                                                       \
      OP( x + 0 );                                          \
      OP( x + 1 );                                          \
      OP( x + 2 );                                          \
      OP( x + 3 );                                          \
    }                                                       \
                                                            \
    INC;                                                    \
  }                                                         \
}                                                           \
else if( ( width & 1 ) == 0 )                               \
{                                                           \
  for( int y = 0; y < height; y++ )                         \
  {                                                         \
    for( int x = 0; x < width; x += 2 )                     \
    {                                                       \
      OP( x + 0 );                                          \
      OP( x + 1 );                                          \
    }                                                       \
                                                            \
    INC;                                                    \
  }                                                         \
}                                                           \
else                                                        \
{                                                           \
  for( int y = 0; y < height; y++ )                         \
  {                                                         \
    for( int x = 0; x < width; x++ )                        \
    {                                                       \
      OP( x );                                              \
    }                                                       \
                                                            \
    INC;                                                    \
  }                                                         \
}


template<typename TOP, typename TINC>
static inline void size_aware_pel_op( TOP op, TINC inc, int width, int height )
{
  if( ( width & 7 ) == 0 )
  {
    for( int y = 0; y < height; y++ )
    {
      for( int x = 0; x < width; x += 8 )
      {
        op( x + 0 );
        op( x + 1 );
        op( x + 2 );
        op( x + 3 );
        op( x + 4 );
        op( x + 5 );
        op( x + 6 );
        op( x + 7 );
      }

      inc();
    }
  }
  else if( ( width & 3 ) == 0 )
  {
    for( int y = 0; y < height; y++ )
    {
      for( int x = 0; x < width; x += 4 )
      {
        op( x + 0 );
        op( x + 1 );
        op( x + 2 );
        op( x + 3 );
      }

      inc();
    }
  }
  else if( ( width & 1 ) == 0 )
  {
    for( int y = 0; y < height; y++ )
    {
      for( int x = 0; x < width; x += 2 )
      {
        op( x + 0 );
        op( x + 1 );
      }

      inc();
    }
  }
  else
  {
    for( int y = 0; y < height; y++ )
    {
      for( int x = 0; x < width; x++ )
      {
        op( x );
      }

      inc();
    }
  }
}

template<>
void AreaBuf<MotionInfo>::fill( const MotionInfo& val );

template<typename T>
void AreaBuf<T>::fill(const T &val)
{
  if( T( 0 ) == val )
  {
    if( width == stride )
    {
      ::memset( buf, 0, width * height * sizeof( T ) );
    }
    else
    {
      T* dest = buf;
      size_t line = width * sizeof( T );

      for( unsigned y = 0; y < height; y++ )
      {
        ::memset( dest, 0, line );

        dest += stride;
      }
    }
  }
  else
  {
    if( width == stride )
    {
      std::fill_n( buf, width * height, val );
    }
    else
    {
      T* dest = buf;

      for( int y = 0; y < height; y++, dest += stride )
      {
        std::fill_n( dest, width, val );
      }
    }
  }
}

template<typename T>
void AreaBuf<T>::memset( const int val )
{
  if( width == stride )
  {
    ::memset( NO_WARNING_class_memaccess( buf ), val, width * height * sizeof( T ) );
  }
  else
  {
    T* dest = buf;
    size_t line = width * sizeof( T );

    for( int y = 0; y < height; y++ )
    {
      ::memset( NO_WARNING_class_memaccess( dest ), val, line );

      dest += stride;
    }
  }
}

#if ENABLE_SIMD_OPT_BUFFER
template<typename T>
void AreaBuf<T>::copyFrom( const AreaBuf<const T> &other )
{
#if !defined(__GNUC__) || __GNUC__ > 5
  static_assert( std::is_trivially_copyable<T>::value, "Type T is not trivially_copyable" );
#endif

  g_pelBufOP.copyBuffer( (const char *) other.buf, sizeof( T ) * other.stride, (char *) buf, sizeof( T ) * stride, sizeof( T ) * width, height );
}
#else
template<typename T>
void AreaBuf<T>::copyFrom( const AreaBuf<const T> &other )
{
#if !defined(__GNUC__) || __GNUC__ > 5
  static_assert( std::is_trivially_copyable<T>::value, "Type T is not trivially_copyable" );
#endif

  CHECK_FATAL( width  != other.width,  "Incompatible size" );
  CHECK_FATAL( height != other.height, "Incompatible size" );

  if( buf == other.buf )
  {
    return;
  }

  if( ptrdiff_t( width ) == stride && stride == other.stride )
  {
    memcpy( buf, other.buf, width * height * sizeof( T ) );
  }
  else
  {
          T* dst              =       buf;
    const T* src              = other.buf;
    const ptrdiff_t srcStride = other.stride;

    for( unsigned y = 0; y < height; y++ )
    {
      memcpy( dst, src, width * sizeof( T ) );

      dst += stride;
      src += srcStride;
    }
  }
}
#endif


template<typename T>
void AreaBuf<T>::subtract( const AreaBuf<const T> &other )
{
  CHECK( width  != other.width,  "Incompatible size" );
  CHECK( height != other.height, "Incompatible size" );

        T* dest =       buf;
  const T* subs = other.buf;

#define SUBS_INC        \
  dest +=       stride; \
  subs += other.stride; \

#define SUBS_OP( ADDR ) dest[ADDR] -= subs[ADDR]

  SIZE_AWARE_PER_EL_OP( SUBS_OP, SUBS_INC );

#undef SUBS_OP
#undef SUBS_INC
}

template<typename T>
void AreaBuf<T>::reconstruct( const AreaBuf<const T> &pred, const AreaBuf<const T> &resi, const ClpRng& clpRng )
{
  THROW_FATAL( "Type not supported" );
}

template<>
void AreaBuf<Pel>::reconstruct( const AreaBuf<const Pel> &pred, const AreaBuf<const Pel> &resi, const ClpRng& clpRng );


template<typename T>
void AreaBuf<T>::addAvg( const AreaBuf<const T> &other1, const AreaBuf<const T> &other2, const ClpRng& clpRng )
{
  THROW_FATAL( "Type not supported" );
}

template<>
void AreaBuf<Pel>::addAvg( const AreaBuf<const Pel> &other1, const AreaBuf<const Pel> &other2, const ClpRng& clpRng );

template<typename T>
void AreaBuf<T>::linearTransform( const int scale, const int shift, const int offset, bool bClip, const ClpRng& clpRng )
{
  THROW_FATAL( "Type not supported" );
}

template<>
void AreaBuf<Pel>::linearTransform( const int scale, const int shift, const int offset, bool bClip, const ClpRng& clpRng );

template<typename T>
void AreaBuf<T>::extendBorderPel( unsigned margin )
{
  T*        p = buf;
  int       h = height;
  int       w = width;
  ptrdiff_t s = stride;

  CHECK( ( w + 2 * margin ) > s, "Size of buffer too small to extend" );
  // do left and right margins
  for( int y = 0; y < h; y++ )
  {
    for( int x = 0; x < margin; x++ )
    {
      *( p - margin + x ) = p[0];
      p[w + x]            = p[w - 1];
    }
    p += s;
  }

  // p is now the (0,height) (bottom left of image within bigger picture
  p -= ( s + margin );
  // p is now the (-margin, height-1)
  for( int y = 0; y < margin; y++ )
  {
    ::memcpy( p + ( y + 1 ) * s, p, sizeof( T ) * ( w + ( margin << 1 ) ) );
  }

  // pi is still (-marginX, height-1)
  p -= ( ( h - 1 ) * s );
  // pi is now (-marginX, 0)
  for( int y = 0; y < margin; y++ )
  {
    ::memcpy( p - ( y + 1 ) * s, p, sizeof( T ) * ( w + ( margin << 1 ) ) );
  }
}

template<typename T>
void AreaBuf<T>::extendBorderPel(unsigned margin, bool left, bool right, bool top, bool bottom)
{
  CHECK( ( width + left*margin + right*margin) > stride, "Size of buffer too small to extend" );
  // do left and right margins

  if( left && right )
  {
    T* p = buf;
    for( int y = 0; y < height; y++ )
    {
      for( int x = 0; x < margin; x++ )
      {
        p[-(int)margin + x] = p[0];
        p[width + x]   = p[width - 1];
      }
      p += stride;
    }
  }

  else if( left )
  {
    T* p = buf;
    for( int y = 0; y < height; y++ )
    {
      for( int x = 0; x < margin; x++ )
      {
        p[-(int)margin + x] = p[0];
      }
      p += stride;
    }
  }

  else if( right )
  {
    T* p = buf;
    for( int y = 0; y < height; y++ )
    {
      for( int x = 0; x < margin; x++ )
      {
        p[width + x] = p[width - 1];
      }
      p += stride;
    }
  }

  const int copylen = width + ( left ? margin : 0 ) + ( right ? margin : 0 );
  if( bottom )
  {
    T* p = buf + stride * height;
    if( left )
      p -= margin;

    // p is now the (-margin, height)
    for( int y = 0; y < margin; y++ )
    {
      ::memcpy( p + y * stride, p - stride, sizeof( T ) * copylen );
    }
  }

  if( top )
  {
    T* p = buf;
    if( left )
      p -= margin;

    // pi is now (-marginX, 0)
    for( int y = -(int)margin; y < 0; y++ )
    {
      ::memcpy( p + y * stride, p, sizeof( T ) * copylen );
    }
  }
}

template<typename T>
void AreaBuf<T>::padBorderPel( unsigned marginX, unsigned marginY, int dir )
{
  T*   p = buf;
  auto s = stride;
  int  h = height;
  int  w = width;

  CHECK( w  > s, "Size of buffer too small to extend" );

  // top-left margin
  if ( dir == 1 )
  {
    for( int y = 0; y < marginY; y++ )
    {
      for( int x = 0; x < marginX; x++ )
      {
        p[x] = p[marginX];
      }
      p += s;
    }
  }

  // bottom-right margin
  if ( dir == 2 )
  {
    p = buf + s * ( h - marginY ) + w - marginX;

    for( int y = 0; y < marginY; y++ )
    {
      for( int x = 0; x < marginX; x++ )
      {
        p[x] = p[-1];
      }
      p += s;
    }
  }
}

#if ENABLE_SIMD_OPT_BUFFER && defined(TARGET_SIMD_X86)
template<> void AreaBuf<Pel>::transposedFrom( const AreaBuf<const Pel> &other );
#endif

template<typename T>
void AreaBuf<T>::transposedFrom( const AreaBuf<const T> &other )
{
  CHECK( width * height != other.width * other.height, "Incompatible size" );

        T* dst  =       buf;
  const T* src  = other.buf;
  width         = other.height;
  height        = other.width;
  stride        = stride < width ? width : stride;

  for( unsigned y = 0; y < other.height; y++ )
  {
    for( unsigned x = 0; x < other.width; x++ )
    {
      dst[y + x*stride] = src[x + y * other.stride];
    }
  }
}

#ifndef DONT_UNDEF_SIZE_AWARE_PER_EL_OP
#undef SIZE_AWARE_PER_EL_OP
#endif // !DONT_UNDEF_SIZE_AWARE_PER_EL_OP

// ---------------------------------------------------------------------------
// UnitBuf struct
// ---------------------------------------------------------------------------

struct UnitArea;

template<typename T>
struct UnitBuf
{
  typedef static_vector<AreaBuf<T>,       MAX_NUM_COMPONENT> UnitBufBuffers;

  ChromaFormat chromaFormat;
  UnitBufBuffers bufs;

  UnitBuf() : chromaFormat( NUM_CHROMA_FORMAT ) { }
  UnitBuf( const ChromaFormat &_chromaFormat, const UnitBufBuffers&  _bufs ) : chromaFormat( _chromaFormat ), bufs( _bufs ) { }
  UnitBuf( const ChromaFormat &_chromaFormat,       UnitBufBuffers&& _bufs ) : chromaFormat( _chromaFormat ), bufs( std::forward<UnitBufBuffers>( _bufs ) ) { }
  UnitBuf( const ChromaFormat &_chromaFormat, const AreaBuf<T>  &blkY ) : chromaFormat( _chromaFormat ), bufs{ blkY } { }
  UnitBuf( const ChromaFormat &_chromaFormat,       AreaBuf<T> &&blkY ) : chromaFormat( _chromaFormat ), bufs{ std::forward<AreaBuf<T> >(blkY) } { }
  UnitBuf( const ChromaFormat &_chromaFormat, const AreaBuf<T>  &blkY, const AreaBuf<T>  &blkCb, const AreaBuf<T>  &blkCr ) : chromaFormat( _chromaFormat ), bufs{ blkY, blkCb, blkCr } { if( chromaFormat == CHROMA_400 ) bufs.resize( 1 ); }
  UnitBuf( const ChromaFormat &_chromaFormat,       AreaBuf<T> &&blkY,       AreaBuf<T> &&blkCb,       AreaBuf<T> &&blkCr ) : chromaFormat( _chromaFormat ), bufs{ std::forward<AreaBuf<T> >(blkY), std::forward<AreaBuf<T> >(blkCb), std::forward<AreaBuf<T> >(blkCr) } { if( chromaFormat == CHROMA_400 ) bufs.resize( 1 ); }

  UnitBuf( const UnitBuf& other )  = default;
  UnitBuf(       UnitBuf&& other ) = default;
  UnitBuf& operator=( const UnitBuf& other )  = default;
  UnitBuf& operator=(       UnitBuf&& other ) = default;

  // conversion from UnitBuf<const T> to UnitBuf<T>
  template<bool T_IS_COST = std::is_const<T>::value>
  UnitBuf( const UnitBuf<typename std::remove_const_t<T>>& other, std::enable_if_t<T_IS_COST>* = 0 ) : chromaFormat( other.chromaFormat ), bufs( other.bufs ) { }

        AreaBuf<T>& get( const ComponentID comp )        { return bufs[comp]; }
  const AreaBuf<T>& get( const ComponentID comp )  const { return bufs[comp]; }

        AreaBuf<T>& Y()        { return bufs[0]; }
  const AreaBuf<T>& Y()  const { return bufs[0]; }
        AreaBuf<T>& Cb()       { return bufs[1]; }
  const AreaBuf<T>& Cb() const { return bufs[1]; }
        AreaBuf<T>& Cr()       { return bufs[2]; }
  const AreaBuf<T>& Cr() const { return bufs[2]; }

  void fill                 ( const T &val );
  void copyFrom             ( const UnitBuf<const T> &other );
  void reconstruct          ( const UnitBuf<const T> &pred, const UnitBuf<const T> &resi, const ClpRngs& clpRngs );
  void subtract             ( const UnitBuf<const T> &other );
  void addWeightedAvg       ( const UnitBuf<      T> &other1, const UnitBuf<      T> &other2, const ClpRngs& clpRngs, const uint8_t bcwIdx = BCW_DEFAULT, const bool chromaOnly = false, const bool lumaOnly = false);
  void addAvg               ( const UnitBuf<      T> &other1, const UnitBuf<      T> &other2, const ClpRngs& clpRngs, const bool chromaOnly = false, const bool lumaOnly = false);
  void extendBorderPel      ( unsigned margin );
  void extendBorderPel      ( unsigned margin, bool left, bool right, bool top, bool bottom );
  void padBorderPel         ( unsigned margin, int dir );

        UnitBuf<      T> subBuf (const Area& subArea);
  const UnitBuf<const T> subBuf (const Area& subArea) const;
        UnitBuf<      T> subBuf (const UnitArea& subArea);
  const UnitBuf<const T> subBuf (const UnitArea& subArea) const;
  void colorSpaceConvert    ( const UnitBuf<T> &other, const ClpRng& clpRng );

  void writeToFile( std::string filename ) const;   // for debug purposes
};

typedef UnitBuf<      Pel>  PelUnitBuf;
typedef UnitBuf<const Pel> CPelUnitBuf;

typedef UnitBuf<      TCoeff>  CoeffUnitBuf;
typedef UnitBuf<const TCoeff> CCoeffUnitBuf;

}   // namespace vvdec

#include <Unit.h>

namespace vvdec
{
template<typename T>
void UnitBuf<T>::fill( const T &val )
{
  for( unsigned i = 0; i < bufs.size(); i++ )
  {
    bufs[i].fill( val );
  }
}

template<typename T>
void UnitBuf<T>::copyFrom( const UnitBuf<const T> &other )
{
  CHECK( chromaFormat != other.chromaFormat, "Incompatible formats" );

  for( unsigned i = 0; i < bufs.size(); i++ )
  {
    bufs[i].copyFrom( other.bufs[i] );
  }
}



template<typename T>
void UnitBuf<T>::subtract( const UnitBuf<const T> &other )
{
  CHECK( chromaFormat != other.chromaFormat, "Incompatible formats" );

  for( unsigned i = 0; i < bufs.size(); i++ )
  {
    bufs[i].subtract( other.bufs[i] );
  }
}

template<typename T>
void UnitBuf<T>::reconstruct(const UnitBuf<const T> &pred, const UnitBuf<const T> &resi, const ClpRngs& clpRngs)
{
  CHECK( chromaFormat != pred.chromaFormat, "Incompatible formats" );
  CHECK( chromaFormat != resi.chromaFormat, "Incompatible formats" );

  for( unsigned i = 0; i < bufs.size(); i++ )
  {
    bufs[i].reconstruct( pred.bufs[i], resi.bufs[i], clpRngs );
  }
}

template<typename T>
void UnitBuf<T>::addWeightedAvg(const UnitBuf<T> &other1, const UnitBuf<T> &other2, const ClpRngs& clpRngs, const uint8_t bcwIdx /* = BCW_DEFAULT */, const bool chromaOnly /* = false */, const bool lumaOnly /* = false */)
{
  const size_t istart = chromaOnly ? 1 : 0;
  const size_t iend   = lumaOnly   ? 1 : bufs.size();

  CHECK(lumaOnly && chromaOnly, "should not happen");

  for(size_t i = istart; i < iend; i++)
  {
    bufs[i].addWeightedAvg(other1.bufs[i], other2.bufs[i], clpRngs, bcwIdx);
  }
}

template<typename T>
void UnitBuf<T>::addAvg(const UnitBuf<T> &other1, const UnitBuf<T> &other2, const ClpRngs& clpRngs, const bool chromaOnly /* = false */, const bool lumaOnly /* = false */)
{
  const size_t istart = chromaOnly ? 1 : 0;
  const size_t iend   = lumaOnly   ? 1 : bufs.size();

  CHECK( lumaOnly && chromaOnly, "should not happen" );

  for( size_t i = istart; i < iend; i++)
  {
    bufs[i].addAvg( other1.bufs[i], other2.bufs[i], clpRngs );
  }
}

template<typename T>
void UnitBuf<T>::colorSpaceConvert( const UnitBuf<T> &other, const ClpRng& clpRng )
{
  THROW_FATAL( "Type not supported" );
}

template<>
void UnitBuf<Pel>::colorSpaceConvert( const UnitBuf<Pel> &other, const ClpRng& clpRng );

template<typename T>
void UnitBuf<T>::extendBorderPel( unsigned margin )
{
  for( unsigned i = 0; i < bufs.size(); i++ )
  {
    bufs[i].extendBorderPel( margin );
  }
}

template<typename T>
void UnitBuf<T>::extendBorderPel(unsigned margin, bool left, bool right, bool top, bool bottom)
{
  for( unsigned i = 0; i < bufs.size(); i++ )
  {
    bufs[i].extendBorderPel( margin, left, right, top, bottom );
  }
}

template<typename T>
void UnitBuf<T>::padBorderPel( unsigned margin, int dir )
{
  for( unsigned i = 0; i < bufs.size(); i++ )
  {
    bufs[i].padBorderPel( margin >> getComponentScaleX( ComponentID( i ), chromaFormat ), margin >> getComponentScaleY( ComponentID( i ), chromaFormat ), dir );
  }
}

template<typename T>
UnitBuf<T> UnitBuf<T>::subBuf( const UnitArea& subArea )
{
  UnitBuf<T> subBuf;
  subBuf.chromaFormat = chromaFormat;
  unsigned blockIdx = 0;

  for( auto &subAreaBuf : bufs )
  {
    subBuf.bufs.push_back( subAreaBuf.subBuf( subArea.blocks[blockIdx].pos(), subArea.blocks[blockIdx].size() ) );
    blockIdx++;
  }

  return subBuf;
}


template<typename T>
const UnitBuf<const T> UnitBuf<T>::subBuf( const UnitArea& subArea ) const
{
  UnitBuf<const T> subBuf;
  subBuf.chromaFormat = chromaFormat;
  unsigned blockIdx = 0;

  for( const auto &subAreaBuf : bufs )
  {
    subBuf.bufs.push_back( subAreaBuf.subBuf( subArea.blocks[blockIdx].pos(), subArea.blocks[blockIdx].size() ) );
    blockIdx++;
  }

  return subBuf;
}

template<typename T>
UnitBuf<T> UnitBuf<T>::subBuf( const Area & subArea )
{
  UnitBuf<T> subBuf;
  subBuf.chromaFormat = chromaFormat;
  unsigned blockIdx = 0;

  for( auto &subAreaBuf : bufs )
  {
    const int scaleX = getComponentScaleX( ComponentID(blockIdx), chromaFormat);
    const int scaleY = getComponentScaleY( ComponentID(blockIdx), chromaFormat);
    const Area scaledArea( subArea.pos().x >> scaleX, subArea.pos().y >> scaleY, subArea.size().width >> scaleX, subArea.size().height >> scaleY );
    subBuf.bufs.push_back( subAreaBuf.subBuf( scaledArea.pos(), scaledArea.size() ) );
    blockIdx++;
  }

  return subBuf;
}

template<typename T>
const UnitBuf<const T> UnitBuf<T>::subBuf( const Area & subArea ) const
{
  UnitBuf<T> subBuf;
  subBuf.chromaFormat = chromaFormat;
  unsigned blockIdx = 0;

  for( auto &subAreaBuf : bufs )
  {
    const int scaleX = getComponentScaleX( ComponentID(blockIdx), chromaFormat);
    const int scaleY = getComponentScaleY( ComponentID(blockIdx), chromaFormat);
    const Area scaledArea( subArea.pos().x >> scaleX, subArea.pos().y >> scaleY, subArea.size().width >> scaleX, subArea.size().height >> scaleY );
    subBuf.bufs.push_back( subAreaBuf.subBuf( scaledArea.pos(), scaledArea.size() ) );
    blockIdx++;
  }

  return subBuf;
}

// ---------------------------------------------------------------------------
// PelStorage struct (PelUnitBuf which allocates its own memory)
// ---------------------------------------------------------------------------

struct UnitArea;
struct CompArea;

struct PelStorage : public PelUnitBuf
{
  PelStorage();
  ~PelStorage();

  void swap( PelStorage& other );
  void createFromBuf( PelUnitBuf buf );
  void create( const UnitArea &_unit );
  void create( const ChromaFormat _chromaFormat, const Size& _size, const unsigned _maxCUSize = 0, const unsigned _margin = 0, const unsigned _alignment = 0, const bool _scaleChromaMargin = true, const UserAllocator* userAlloc = nullptr );
  void destroy();

         PelBuf getBuf( const CompArea &blk );
  const CPelBuf getBuf( const CompArea &blk ) const;

         PelBuf getBuf( const ComponentID CompID );
  const CPelBuf getBuf( const ComponentID CompID ) const;

         PelUnitBuf getBuf( const UnitArea &unit );
  const CPelUnitBuf getBuf( const UnitArea &unit ) const;
  Pel *getOrigin( const int id ) const { return m_origin[id]; }
  PelBuf getOriginBuf( const int id ) { return PelBuf( m_origin[id], m_origSi[id] ); }

  Size  getBufSize( const int id )      const { return  m_origSi[id];     }
  void *getBufAllocator( const int id ) const { return m_allocator[id];   }
  bool  isExternAllocator()             const { return m_externAllocator; }

  const UserAllocator* getUserAllocator() const { return m_userAlloc; }

private:

  Size    m_origSi[MAX_NUM_COMPONENT];
  Pel    *m_origin[MAX_NUM_COMPONENT];
  void   *m_allocator[MAX_NUM_COMPONENT];
  bool    m_externAllocator = false;
  const UserAllocator* m_userAlloc  = nullptr;
};

}   // namespace vvdec

Coverage Report

Created: 2026-06-16 07:20