C++ GetAuthenticPixels函数代码示例

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本文整理汇总了C++中GetAuthenticPixels函数的典型用法代码示例。如果您正苦于以下问题：C++ GetAuthenticPixels函数的具体用法？C++ GetAuthenticPixels怎么用？C++ GetAuthenticPixels使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了GetAuthenticPixels函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: ReadVIPSPixelsNONE

static MagickBooleanType ReadVIPSPixelsNONE(Image *image,
  const VIPSBandFormat format,const VIPSType type,const unsigned int channels,
  ExceptionInfo *exception)
{
  Quantum
    pixel;

  register IndexPacket
    *indexes;

  register PixelPacket
    *q;

  register ssize_t
    x;

  ssize_t
    y;

  for (y = 0; y < (ssize_t) image->rows; y++)
  {
    q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (PixelPacket *) NULL)
      return MagickFalse;
    indexes=GetAuthenticIndexQueue(image);
    for (x=0; x < (ssize_t) image->columns; x++)
    {
      pixel=ReadVIPSPixelNONE(image,format,type);
      SetPixelRed(q,pixel);
      if (channels < 3)
        {
          SetPixelGreen(q,pixel);
          SetPixelBlue(q,pixel);
          if (channels == 2)
            SetPixelAlpha(q,ReadVIPSPixelNONE(image,format,type));
        }
      else
        {
          SetPixelGreen(q,ReadVIPSPixelNONE(image,format,type));
          SetPixelBlue(q,ReadVIPSPixelNONE(image,format,type));
          if (channels == 4)
            {
              if (image->colorspace == CMYKColorspace)
                SetPixelIndex(indexes+x,ReadVIPSPixelNONE(image,format,type));
              else
                SetPixelAlpha(q,ReadVIPSPixelNONE(image,format,type));
            }
          else if (channels == 5)
            {
              SetPixelIndex(indexes+x,ReadVIPSPixelNONE(image,format,type));
              SetPixelAlpha(q,ReadVIPSPixelNONE(image,format,type));
            }
        }
      q++;
    }
    if (SyncAuthenticPixels(image,exception) == MagickFalse)
      return MagickFalse;
  }
  return(MagickTrue);
}

开发者ID:JohnHeywardOBrien，项目名称:photogram，代码行数:60，代码来源:vips.c

示例2: PlasmaPixel

static inline void PlasmaPixel(Image *image,RandomInfo *random_info,double x,
  double y)
{
  ExceptionInfo
    *exception;

  QuantumAny
    range;

  register PixelPacket
    *q;

  exception=(&image->exception);
  q=GetAuthenticPixels(image,(ssize_t) ceil(x-0.5),(ssize_t) ceil(y-0.5),1,1,
    exception);
  if (q == (PixelPacket *) NULL)
    return;
  range=GetQuantumRange(16UL);
  q->red=ScaleAnyToQuantum((size_t) (65535.0*
    GetPseudoRandomValue(random_info)+0.5),range);
  q->green=ScaleAnyToQuantum((size_t) (65535.0*
    GetPseudoRandomValue(random_info)+0.5),range);
  q->blue=ScaleAnyToQuantum((size_t) (65535.0*
    GetPseudoRandomValue(random_info)+0.5),range);
  (void) SyncAuthenticPixels(image,exception);
}

开发者ID:JasonGross，项目名称:characters，代码行数:26，代码来源:plasma.c

示例3: PlasmaPixel

static inline void PlasmaPixel(Image *image,RandomInfo *random_info,double x,
  double y,ExceptionInfo *exception)
{
  register Quantum
    *q;

  q=GetAuthenticPixels(image,(ssize_t) ceil(x-0.5),(ssize_t) ceil(y-0.5),1,1,
    exception);
  if (q == (Quantum *) NULL)
    return;
  SetPixelRed(image,ScaleShortToQuantum((unsigned short) (65535.0*
    GetPseudoRandomValue(random_info)+0.5)),q);
  SetPixelGreen(image,ScaleShortToQuantum((unsigned short) (65535.0*
    GetPseudoRandomValue(random_info)+0.5)),q);
  SetPixelBlue(image,ScaleShortToQuantum((unsigned short) (65535.0*
    GetPseudoRandomValue(random_info)+0.5)),q);
  (void) SyncAuthenticPixels(image,exception);
}

开发者ID:0xPr0xy，项目名称:ImageMagick，代码行数:18，代码来源:plasma.c

示例4: pixmagick_convert_py_image

TCAX_PyPix pixmagick_convert_py_image(PyObject *self, PyObject *args) {
    PyObject *pyArg1;
    Image *pImage;
    TCAX_Pix pix;
    PixelPacket *buf;
    int i, index, count;
    if (PyTuple_GET_SIZE(args) < 1) {
        PyErr_SetString(PyExc_RuntimeError, "pmgToPix error, too less parameters - `(image)'\n");
        return NULL;
    }
    pyArg1 = PyTuple_GET_ITEM(args, 0);
    if (!PyLong_Check(pyArg1)) {
        PyErr_SetString(PyExc_RuntimeError, "pmgToPix error, the 1st param should be an integer - `img'\n");
        return NULL;
    }
    pImage = (Image *)PyLong_AsUnsignedLong(pyArg1);
    if (!IsImageObject(pImage)) {
        PyErr_SetString(PyExc_RuntimeError, "pmgToPix error, the parameter specified by `img' is not a valid image\n");
        return NULL;
    }
    pix.initX = 0;
    pix.initY = 0;
    pix.width = pImage->columns;
    pix.height = pImage->rows;
    pix.size = pix.height * (pix.width << 2);
    pix.buf = (unsigned char *)malloc(pix.size * sizeof(unsigned char));
    buf = GetAuthenticPixels(pImage, 0, 0, pImage->columns, pImage->rows, NULL);
    count = pImage->columns * pImage->rows;
    index = 0;
    for (i = 0; i < count; i++) {
        pix.buf[index++] = buf[i].red;
        pix.buf[index++] = buf[i].green;
        pix.buf[index++] = buf[i].blue;
        pix.buf[index++] = 255 - buf[i].opacity;
    }
    return tcaxlib_convert_pix(&pix, 1);
}

开发者ID:Lichtavat，项目名称:TCAX，代码行数:37，代码来源:convertion.c

示例5: ReadTXTImage


//.........这里部分代码省略.........
    status;

  QuantumAny
    range;

  register long
    i;

  register PixelPacket
    *q;

  ssize_t
    count;

  unsigned long
    depth,
    max_value;

  /*
    Open image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  (void) ResetMagickMemory(text,0,sizeof(text));
  (void) ReadBlobString(image,text);
  if (LocaleNCompare((char *) text,MagickID,strlen(MagickID)) != 0)
    return(ReadTEXTImage(image_info,image,text,exception));
  *colorspace='\0';
  count=(ssize_t) sscanf(text+32,"%lu,%lu,%lu,%s",&image->columns,
    &image->rows,&max_value,colorspace);
  if (count != 4)
    ThrowReaderException(CorruptImageError,"ImproperImageHeader");
  for (depth=1; (GetQuantumRange(depth)+1) < max_value; depth++) ;
  image->depth=depth;
  LocaleLower(colorspace);
  i=(long) strlen(colorspace)-1;
  image->matte=MagickFalse;
  if ((i > 0) && (colorspace[i] == 'a'))
    {
      colorspace[i]='\0';
      image->matte=MagickTrue;
    }
  type=ParseMagickOption(MagickColorspaceOptions,MagickFalse,colorspace);
  if (type < 0)
    ThrowReaderException(CorruptImageError,"ImproperImageHeader");
  image->colorspace=(ColorspaceType) type;
  (void) ResetMagickMemory(&pixel,0,sizeof(pixel));
  (void) SetImageBackgroundColor(image);
  range=GetQuantumRange(image->depth);
  while (ReadBlobString(image,text) != (char *) NULL)
  {
    if (image->colorspace == CMYKColorspace)
      {
        if (image->matte != MagickFalse)
          count=(ssize_t) sscanf(text,"%ld,%ld: (%lu,%lu,%lu,%lu,%lu",&x,&y,
            &pixel.red,&pixel.green,&pixel.blue,&pixel.index,&pixel.opacity);
        else
          count=(ssize_t) sscanf(text,"%ld,%ld: (%lu,%lu,%lu,%lu",&x,&y,
            &pixel.red,&pixel.green,&pixel.blue,&pixel.index);
      }
    else
      if (image->matte != MagickFalse)
        count=(ssize_t) sscanf(text,"%ld,%ld: (%lu,%lu,%lu,%lu",&x,&y,
          &pixel.red,&pixel.green,&pixel.blue,&pixel.opacity);
      else
        count=(ssize_t) sscanf(text,"%ld,%ld: (%lu,%lu,%lu",&x,&y,
          &pixel.red,&pixel.green,&pixel.blue);
    if (count < 5)
      continue;
    q=GetAuthenticPixels(image,x,y,1,1,exception);
    if (q == (PixelPacket *) NULL)
      continue;
    q->red=ScaleAnyToQuantum(pixel.red,range);
    q->green=ScaleAnyToQuantum(pixel.green,range);
    q->blue=ScaleAnyToQuantum(pixel.blue,range);
    if (image->colorspace == CMYKColorspace)
      {
        indexes=GetAuthenticIndexQueue(image);
        *indexes=ScaleAnyToQuantum(pixel.index,range);
      }
    if (image->matte != MagickFalse)
      q->opacity=(Quantum) (QuantumRange-ScaleAnyToQuantum(pixel.opacity,
        range));
    if (SyncAuthenticPixels(image,exception) == MagickFalse)
      break;
  }
  return(GetFirstImageInList(image));
}

开发者ID:0xPr0xy，项目名称:ImageMagick，代码行数:101，代码来源:txt.c

示例6: ReadTXTImage


//.........这里部分代码省略.........
            if (image->matte != MagickFalse)
              {
                count=(ssize_t) sscanf(text,"%ld,%ld: (%lf%*[%,]%lf%*[%,]",
                  &x_offset,&y_offset,&red,&opacity);
                green=red;
                blue=red;
                break;
              }
            count=(ssize_t) sscanf(text,"%ld,%ld: (%lf%*[%,]",&x_offset,
              &y_offset,&red);
            green=red;
            blue=red;
            break;
          }
          case CMYKColorspace:
          {
            if (image->matte != MagickFalse)
              {
                count=(ssize_t) sscanf(text,
                  "%ld,%ld: (%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]",
                  &x_offset,&y_offset,&red,&green,&blue,&index,&opacity);
                break;
              }
            count=(ssize_t) sscanf(text,
              "%ld,%ld: (%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]",&x_offset,
              &y_offset,&red,&green,&blue,&index);
            break;
          }
          default:
          {
            if (image->matte != MagickFalse)
              {
                count=(ssize_t) sscanf(text,
                  "%ld,%ld: (%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]",
                  &x_offset,&y_offset,&red,&green,&blue,&opacity);
                break;
              }
            count=(ssize_t) sscanf(text,
              "%ld,%ld: (%lf%*[%,]%lf%*[%,]%lf%*[%,]",&x_offset,&y_offset,
               &red,&green,&blue);
            break;
          }
        }
        if (strchr(text,'%') != (char *) NULL)
          {
            red*=0.01*range;
            green*=0.01*range;
            blue*=0.01*range;
            index*=0.01*range;
            opacity*=0.01*range;
          }
        if (image->colorspace == LabColorspace)
          {
            green+=(range+1)/2.0;
            blue+=(range+1)/2.0;
          }
        pixel.red=ScaleAnyToQuantum((QuantumAny) (red+0.5),range);
        pixel.green=ScaleAnyToQuantum((QuantumAny) (green+0.5),range);
        pixel.blue=ScaleAnyToQuantum((QuantumAny) (blue+0.5),range);
        pixel.index=ScaleAnyToQuantum((QuantumAny) (index+0.5),range);
        pixel.opacity=ScaleAnyToQuantum((QuantumAny) (opacity+0.5),range);
        q=GetAuthenticPixels(image,x_offset,y_offset,1,1,exception);
        if (q == (PixelPacket *) NULL)
          continue;
        SetPixelRed(q,pixel.red);
        SetPixelGreen(q,pixel.green);
        SetPixelBlue(q,pixel.blue);
        if (image->colorspace == CMYKColorspace)
          {
            indexes=GetAuthenticIndexQueue(image);
            SetPixelIndex(indexes,pixel.index);
          }
        if (image->matte != MagickFalse)
          SetPixelAlpha(q,pixel.opacity);
        if (SyncAuthenticPixels(image,exception) == MagickFalse)
          break;
      }
    }
    (void) ReadBlobString(image,text);
    if (LocaleNCompare((char *) text,MagickID,strlen(MagickID)) == 0)
      {
        /*
          Allocate next image structure.
        */
        AcquireNextImage(image_info,image);
        if (GetNextImageInList(image) == (Image *) NULL)
          {
            image=DestroyImageList(image);
            return((Image *) NULL);
          }
        image=SyncNextImageInList(image);
        status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
          GetBlobSize(image));
        if (status == MagickFalse)
          break;
      }
  } while (LocaleNCompare((char *) text,MagickID,strlen(MagickID)) == 0);
  (void) CloseBlob(image);
  return(GetFirstImageInList(image));
}

开发者ID:GalliumOS，项目名称:imagemagick，代码行数:101，代码来源:txt.c

示例7: GetBit

static Image *ReadSTEGANOImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
#define GetBit(alpha,i) MagickMin((((unsigned long) (alpha) >> (unsigned long) \
  (i)) & 0x01),16)
#define SetBit(alpha,i,set) (alpha)=(IndexPacket) ((set) != 0 ? \
  (unsigned long) (alpha) | (1UL << (unsigned long) (i)) : (unsigned long) \
  (alpha) & ~(1UL << (unsigned long) (i)))

  Image
    *image,
    *watermark;

  ImageInfo
    *read_info;

  long
    c,
    i,
    j,
    k,
    y;

  MagickBooleanType
    status;

  PixelPacket
    pixel;

  register IndexPacket
    *indexes;

  register long
    x;

  register PixelPacket
    *q;

  unsigned long
    depth;

  /*
    Initialize Image structure.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  if ((image->columns == 0) || (image->rows == 0))
    ThrowReaderException(OptionError,"MustSpecifyImageSize");
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  *read_info->magick='\0';
  watermark=ReadImage(read_info,exception);
  read_info=DestroyImageInfo(read_info);
  if (watermark == (Image *) NULL)
    return((Image *) NULL);
  watermark->depth=MAGICKCORE_QUANTUM_DEPTH;
  if (AcquireImageColormap(image,MaxColormapSize) == MagickFalse)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  if (image_info->ping != MagickFalse)
    {
      (void) CloseBlob(image);
      return(GetFirstImageInList(image));
    }
  /*
    Get hidden watermark from low-order bits of image.
  */
  c=0;
  i=0;
  j=0;
  i=MAGICKCORE_QUANTUM_DEPTH-1;
  depth=MAGICKCORE_QUANTUM_DEPTH;
  for (k=image->offset; (i >= 0) && (j < (long) depth); i--)
  {
    for (y=0; (y < (long) image->rows) && (j < (long) depth); y++)
    {
      x=0;
      for (; (x < (long) image->columns) && (j < (long) depth); x++)
      {
        if ((k/(long) watermark->columns) >= (long) watermark->rows)
          break;
        (void) GetOneVirtualPixel(watermark,k % (long) watermark->columns,
          k/(long) watermark->columns,&pixel,exception);
        q=GetAuthenticPixels(image,x,y,1,1,exception);
        if (q == (PixelPacket *) NULL)
          break;
        indexes=GetAuthenticIndexQueue(image);
        switch (c)
        {
          case 0:
          {
            SetBit(*indexes,i,GetBit(pixel.red,j));
            break;
          }
          case 1:
//.........这里部分代码省略.........

开发者ID:0xPr0xy，项目名称:ImageMagick，代码行数:101，代码来源:stegano.c

示例8: load_tile_rle

static MagickBooleanType load_tile_rle(Image *image,Image *tile_image,
  XCFDocInfo *inDocInfo,XCFLayerInfo *inLayerInfo,size_t data_length)
{
  ExceptionInfo
    *exception;

  ssize_t
    i,
    j;

  MagickOffsetType
    size;

  register PixelPacket
    *q;

  ssize_t
    bytes_per_pixel,
    count;

  size_t
    length;

  unsigned char
    data,
    pixel,
    *xcfdata,
    *xcfodata,
    *xcfdatalimit;

  bytes_per_pixel=(ssize_t) inDocInfo->bytes_per_pixel;
  xcfdata=(unsigned char *) AcquireQuantumMemory(data_length,sizeof(*xcfdata));
  if (xcfdata == (unsigned char *) NULL)
    ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
      image->filename);
  xcfodata=xcfdata;
  count=ReadBlob(image, (size_t) data_length, xcfdata);
  xcfdatalimit = xcfodata+count-1;
  exception=(&image->exception);
  for (i=0; i < (ssize_t) bytes_per_pixel; i++)
  {
    q=GetAuthenticPixels(tile_image,0,0,tile_image->columns,tile_image->rows,
      exception);
    size=(MagickOffsetType) tile_image->rows*tile_image->columns;
    while (size > 0)
    {
      if (xcfdata > xcfdatalimit)
        goto bogus_rle;
      pixel=(*xcfdata++);
      length=(size_t) pixel;
      if (length >= 128)
        {
          length=255-(length-1);
          if (length == 128)
            {
              if (xcfdata >= xcfdatalimit)
                goto bogus_rle;
              length=(size_t) ((*xcfdata << 8) + xcfdata[1]);
              xcfdata+=2;
            }
            size-=length;
            if (size < 0)
              goto bogus_rle;
            if (&xcfdata[length-1] > xcfdatalimit)
              goto bogus_rle;
            while (length-- > 0)
            {
              data=(*xcfdata++);
              switch (i)
              {
                case 0:
                {
                  q->red=ScaleCharToQuantum(data);
                  if (inDocInfo->image_type == GIMP_GRAY)
                    {
                      q->green=ScaleCharToQuantum(data);
                      q->blue=ScaleCharToQuantum(data);
                      q->opacity=ScaleCharToQuantum((unsigned char) (255-
                        inLayerInfo->opacity));
                    }
                  else
                    {
                      q->green= q->red;
                      q->blue= q->red;
                      q->opacity=ScaleCharToQuantum((unsigned char) (255-
                        inLayerInfo->opacity));
                    }
                  break;
                }
                case 1:
                {
                  q->green=ScaleCharToQuantum(data);
                  break;
                }
                case 2:
                {
                  q->blue=ScaleCharToQuantum(data);
                  break;
                }
                case 3:
//.........这里部分代码省略.........

开发者ID:fightingillini5，项目名称:cs225-1，代码行数:101，代码来源:xcf.c

示例9: GetBit

static Image *ReadSTEGANOImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
#define GetBit(alpha,i) MagickMin((((size_t) (alpha) >> (size_t) \
  (i)) & 0x01),16)
#define SetBit(i,set) SetPixelIndex(image,((set) != 0 ? \
  (size_t) GetPixelIndex(image,q) | (one << (size_t) (i)) : \
  (size_t) GetPixelIndex(image,q) & ~(one << (size_t) (i))),q)

  Image
    *image,
    *watermark;

  ImageInfo
    *read_info;

  int
    c;

  MagickBooleanType
    status;

  PixelInfo
    pixel;

  register Quantum
    *q;

  register ssize_t
    x;

  size_t
    depth,
    one;

  ssize_t
    i,
    j,
    k,
    y;

  /*
    Initialize Image structure.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  one=1;
  image=AcquireImage(image_info,exception);
  if ((image->columns == 0) || (image->rows == 0))
    ThrowReaderException(OptionError,"MustSpecifyImageSize");
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  *read_info->magick='\0';
  watermark=ReadImage(read_info,exception);
  read_info=DestroyImageInfo(read_info);
  if (watermark == (Image *) NULL)
    return((Image *) NULL);
  watermark->depth=MAGICKCORE_QUANTUM_DEPTH;
  if (AcquireImageColormap(image,MaxColormapSize,exception) == MagickFalse)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  if (image_info->ping != MagickFalse)
    {
      (void) CloseBlob(image);
      return(GetFirstImageInList(image));
    }
  /*
    Get hidden watermark from low-order bits of image.
  */
  c=0;
  i=0;
  j=0;
  i=(ssize_t) (watermark->depth-1);
  depth=watermark->depth;
  for (k=image->offset; (i >= 0) && (j < (ssize_t) depth); i--)
  {
    for (y=0; (y < (ssize_t) image->rows) && (j < (ssize_t) depth); y++)
    {
      x=0;
      for ( ; (x < (ssize_t) image->columns) && (j < (ssize_t) depth); x++)
      {
        if ((k/(ssize_t) watermark->columns) >= (ssize_t) watermark->rows)
          break;
        (void) GetOneVirtualPixelInfo(watermark,UndefinedVirtualPixelMethod,
          k % (ssize_t) watermark->columns,k/(ssize_t) watermark->columns,
          &pixel,exception);
        q=GetAuthenticPixels(image,x,y,1,1,exception);
        if (q == (Quantum *) NULL)
          break;
        switch (c)
        {
          case 0:
          {
            SetBit(i,GetBit(pixel.red,j));
            break;
          }
//.........这里部分代码省略.........

开发者ID:Ladeira，项目名称:ImageMagick，代码行数:101，代码来源:stegano.c

示例10: assert


//.........这里部分代码省略.........
  page.x=0;
  page.y=0;
  if (image_info->page != (char *) NULL)
    (void) ParseAbsoluteGeometry(image_info->page,&page);
  if (image->columns == 0)
    {
      pango_layout_get_pixel_extents(layout,NULL,&extent);
      image->columns=extent.x+extent.width;
    }
  else
    {
      image->columns-=2*page.x;
      pango_layout_set_width(layout,(PANGO_SCALE*image->columns*
        image->x_resolution+36.0)/72.0);
    }
  if (image->rows == 0)
    {
      pango_layout_get_pixel_extents(layout,NULL,&extent);
      image->rows=extent.y+extent.height;
    }
  else
    {
      image->rows-=2*page.y;
      pango_layout_set_height(layout,(PANGO_SCALE*image->rows*
        image->y_resolution+36.0)/72.0);
    }
  /*
    Create canvas.
  */
  canvas=(FT_Bitmap *) AcquireMagickMemory(sizeof(*canvas));
  if (canvas == (FT_Bitmap *) NULL)
    {
      draw_info=DestroyDrawInfo(draw_info);
      ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
    }
  canvas->width=image->columns;
  canvas->pitch=(canvas->width+3) & ~3;
  canvas->rows=image->rows;
  canvas->buffer=(unsigned char *) AcquireQuantumMemory(canvas->pitch,
    canvas->rows*sizeof(*canvas->buffer));
  if (canvas->buffer == (unsigned char *) NULL)
    {
      draw_info=DestroyDrawInfo(draw_info);
      canvas=(FT_Bitmap *) RelinquishMagickMemory(canvas);
      ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
    }
  canvas->num_grays=256;
  canvas->pixel_mode=ft_pixel_mode_grays;
  ResetMagickMemory(canvas->buffer,0x00,canvas->pitch*canvas->rows);
  pango_ft2_render_layout(canvas,layout,0,0);
  /*
    Convert caption to image.
  */
  image->columns+=2*page.x;
  image->rows+=2*page.y;
  if (SetImageBackgroundColor(image) == MagickFalse)
    {
      draw_info=DestroyDrawInfo(draw_info);
      canvas->buffer=(unsigned char *) RelinquishMagickMemory(canvas->buffer);
      canvas=(FT_Bitmap *) RelinquishMagickMemory(canvas);
      caption=DestroyString(caption);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  p=canvas->buffer;
  for (y=page.y; y < (ssize_t) (image->rows-page.y); y++)
  {
    register ssize_t
      x;

    q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (PixelPacket *) NULL)
      break;
    q+=page.x;
    for (x=page.x; x < (ssize_t) (image->columns-page.x); x++)
    {
      MagickRealType
        fill_opacity;

      (void) GetFillColor(draw_info,x,y,&fill_color);
      fill_opacity=QuantumRange-(*p)/canvas->num_grays*(QuantumRange-
        fill_color.opacity);
      if (draw_info->text_antialias == MagickFalse)
        fill_opacity=fill_opacity >= 0.5 ? 1.0 : 0.0;
      MagickCompositeOver(&fill_color,fill_opacity,q,q->opacity,q);
      p++;
      q++;
    }
    for ( ; x < (ssize_t) ((canvas->width+3) & ~3); x++)
      p++;
  }
  /*
    Relinquish resources.
  */
  draw_info=DestroyDrawInfo(draw_info);
  canvas->buffer=(unsigned char *) RelinquishMagickMemory(canvas->buffer);
  canvas=(FT_Bitmap *) RelinquishMagickMemory(canvas);
  caption=DestroyString(caption);
  return(GetFirstImageInList(image));
}

开发者ID:nfma，项目名称:configuration，代码行数:101，代码来源:caption.c

示例11: load_tile

static MagickBooleanType load_tile(Image *image,Image *tile_image,
  XCFDocInfo *inDocInfo,XCFLayerInfo *inLayerInfo,size_t data_length,
  ExceptionInfo *exception)
{
  ssize_t
    y;

  register ssize_t
    x;

  register Quantum
    *q;

  size_t
    extent;

  ssize_t
    count;

  unsigned char
    *graydata;

  XCFPixelInfo
    *xcfdata,
    *xcfodata;

  extent=0;
  if (inDocInfo->image_type == GIMP_GRAY)
    extent=tile_image->columns*tile_image->rows*sizeof(*graydata);
  else
    if (inDocInfo->image_type == GIMP_RGB)
      extent=tile_image->columns*tile_image->rows*sizeof(*xcfdata);
  if (extent > data_length)
    ThrowBinaryException(CorruptImageError,"NotEnoughPixelData",
      image->filename);
  xcfdata=(XCFPixelInfo *) AcquireQuantumMemory(MagickMax(data_length,
    tile_image->columns*tile_image->rows),sizeof(*xcfdata));
  if (xcfdata == (XCFPixelInfo *) NULL)
    ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
      image->filename);
  xcfodata=xcfdata;
  graydata=(unsigned char *) xcfdata;  /* used by gray and indexed */
  count=ReadBlob(image,data_length,(unsigned char *) xcfdata);
  if (count != (ssize_t) data_length)
    ThrowBinaryException(CorruptImageError,"NotEnoughPixelData",
      image->filename);
  for (y=0; y < (ssize_t) tile_image->rows; y++)
  {
    q=GetAuthenticPixels(tile_image,0,y,tile_image->columns,1,exception);
    if (q == (Quantum *) NULL)
      break;
    if (inDocInfo->image_type == GIMP_GRAY)
      {
        for (x=0; x < (ssize_t) tile_image->columns; x++)
        {
          SetPixelGray(tile_image,ScaleCharToQuantum(*graydata),q);
          SetPixelAlpha(tile_image,ScaleCharToQuantum((unsigned char)
            inLayerInfo->alpha),q);
          graydata++;
          q+=GetPixelChannels(tile_image);
        }
      }
    else
      if (inDocInfo->image_type == GIMP_RGB)
        {
          for (x=0; x < (ssize_t) tile_image->columns; x++)
          {
            SetPixelRed(tile_image,ScaleCharToQuantum(xcfdata->red),q);
            SetPixelGreen(tile_image,ScaleCharToQuantum(xcfdata->green),q);
            SetPixelBlue(tile_image,ScaleCharToQuantum(xcfdata->blue),q);
            SetPixelAlpha(tile_image,xcfdata->alpha == 255U ? TransparentAlpha :
              ScaleCharToQuantum((unsigned char) inLayerInfo->alpha),q);
            xcfdata++;
            q+=GetPixelChannels(tile_image);
          }
        }
     if (SyncAuthenticPixels(tile_image,exception) == MagickFalse)
       break;
  }
  xcfodata=(XCFPixelInfo *) RelinquishMagickMemory(xcfodata);
  return MagickTrue;
}

开发者ID:278443820，项目名称:ImageMagick，代码行数:82，代码来源:xcf.c

示例12: ReadPANGOImage


//.........这里部分代码省略.........
  else
    {
      image->columns-=2*page.x;
      pango_layout_set_width(layout,(int) ((PANGO_SCALE*image->columns*
        (image->resolution.x == 0.0 ? 90.0 : image->resolution.x)+45.0)/90.0+
        0.5));
    }
  if (image->rows == 0)
    {
      pango_layout_get_extents(layout,NULL,&extent);
      image->rows=(extent.y+extent.height+PANGO_SCALE/2)/PANGO_SCALE+2*page.y;
    }
  else
    {
      image->rows-=2*page.y;
      pango_layout_set_height(layout,(int) ((PANGO_SCALE*image->rows*
        (image->resolution.y == 0.0 ? 90.0 : image->resolution.y)+45.0)/90.0+
        0.5));
    }
  /*
    Render markup.
  */
  stride=(size_t) cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32,
    image->columns);
  pixels=(unsigned char *) AcquireQuantumMemory(image->rows,stride*
    sizeof(*pixels));
  if (pixels == (unsigned char *) NULL)
    {
      draw_info=DestroyDrawInfo(draw_info);
      caption=DestroyString(caption);
      ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
    }
  surface=cairo_image_surface_create_for_data(pixels,CAIRO_FORMAT_ARGB32,
    image->columns,image->rows,stride);
  cairo_image=cairo_create(surface);
  cairo_set_operator(cairo_image,CAIRO_OPERATOR_CLEAR);
  cairo_paint(cairo_image);
  cairo_set_operator(cairo_image,CAIRO_OPERATOR_OVER);
  cairo_translate(cairo_image,page.x,page.y);
  pango_cairo_show_layout(cairo_image,layout);
  cairo_destroy(cairo_image);
  cairo_surface_destroy(surface);
  g_object_unref(layout);
  g_object_unref(fontmap);
  /*
    Convert surface to image.
  */
  (void) SetImageBackgroundColor(image,exception);
  p=pixels;
  GetPixelInfo(image,&fill_color);
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    register Quantum
      *q;

    register ssize_t
      x;

    q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (Quantum *) NULL)
      break;
    for (x=0; x < (ssize_t) image->columns; x++)
    {
      double
        gamma;

      fill_color.blue=(double) ScaleCharToQuantum(*p++);
      fill_color.green=(double) ScaleCharToQuantum(*p++);
      fill_color.red=(double) ScaleCharToQuantum(*p++);
      fill_color.alpha=(double) ScaleCharToQuantum(*p++);
      /*
        Disassociate alpha.
      */
      gamma=1.0-QuantumScale*fill_color.alpha;
      gamma=PerceptibleReciprocal(gamma);
      fill_color.blue*=gamma;
      fill_color.green*=gamma;
      fill_color.red*=gamma;
      CompositePixelOver(image,&fill_color,fill_color.alpha,q,(double)
        GetPixelAlpha(image,q),q);
      q+=GetPixelChannels(image);
    }
    if (SyncAuthenticPixels(image,exception) == MagickFalse)
      break;
    if (image->previous == (Image *) NULL)
      {
        status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
        image->rows);
        if (status == MagickFalse)
          break;
      }
  }
  /*
    Relinquish resources.
  */
  pixels=(unsigned char *) RelinquishMagickMemory(pixels);
  draw_info=DestroyDrawInfo(draw_info);
  caption=DestroyString(caption);
  return(GetFirstImageInList(image));
}

开发者ID:epu，项目名称:ImageMagick，代码行数:101，代码来源:pango.c

示例13: ReadYCBCRImage


//.........这里部分代码省略.........
  count=0;
  length=0;
  scene=0;
  do
  {
    /*
      Read pixels to virtual canvas image then push to image.
    */
    if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
      if (image->scene >= (image_info->scene+image_info->number_scenes-1))
        break;
    SetImageColorspace(image,YCbCrColorspace);
    switch (image_info->interlace)
    {
      case NoInterlace:
      default:
      {
        /*
          No interlacing:  YCbCrYCbCrYCbCrYCbCrYCbCrYCbCr...
        */
        if (scene == 0)
          {
            length=GetQuantumExtent(canvas_image,quantum_info,quantum_type);
            count=ReadBlob(image,length,pixels);
          }
        for (y=0; y < (ssize_t) image->extract_info.height; y++)
        {
          if (count != (ssize_t) length)
            {
              ThrowFileException(exception,CorruptImageError,
                "UnexpectedEndOfFile",image->filename);
              break;
            }
          q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
            exception);
          if (q == (PixelPacket *) NULL)
            break;
          length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
            quantum_info,quantum_type,pixels,exception);
          if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
            break;
          if (((y-image->extract_info.y) >= 0) && 
              ((y-image->extract_info.y) < (ssize_t) image->rows))
            {
              p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0,
                canvas_image->columns,1,exception);
              q=QueueAuthenticPixels(image,0,y-image->extract_info.y,
                image->columns,1,exception);
              if ((p == (const PixelPacket *) NULL) ||
                  (q == (PixelPacket *) NULL))
                break;
              for (x=0; x < (ssize_t) image->columns; x++)
              {
                SetPixelRed(q,GetPixelRed(p));
                SetPixelGreen(q,GetPixelGreen(p));
                SetPixelBlue(q,GetPixelBlue(p));
                if (image->matte != MagickFalse)
                  SetPixelOpacity(q,GetPixelOpacity(p));
                p++;
                q++;
              }
              if (SyncAuthenticPixels(image,exception) == MagickFalse)
                break;
            }
          if (image->previous == (Image *) NULL)
            {

开发者ID:0xPr0xy，项目名称:ImageMagick，代码行数:67，代码来源:ycbcr.c

示例14: assert


//.........这里部分代码省略.........
  }
  /*
    Convert JPEG 2000 pixels.
  */
  image->alpha_trait=number_components > 3 ? BlendPixelTrait :
    UndefinedPixelTrait;
  maximum_component_depth=0;
  for (i=0; i < (ssize_t) number_components; i++)
  {
    maximum_component_depth=(unsigned int) MagickMax((size_t)
      jas_image_cmptprec(jp2_image,components[i]),(size_t)
      maximum_component_depth);
    pixels[i]=jas_matrix_create(1,(int) (image->columns/x_step[i]));
    if (pixels[i] == (jas_matrix_t *) NULL)
      {
        for (--i; i >= 0; i--)
          jas_matrix_destroy(pixels[i]);
        jas_image_destroy(jp2_image);
        ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
      }
  }
  image->depth=maximum_component_depth;
  if (image_info->ping != MagickFalse)
    {
      (void) jas_stream_close(jp2_stream);
      jas_image_destroy(jp2_image);
      return(GetFirstImageInList(image));
    }
  for (i=0; i < (ssize_t) number_components; i++)
    range[i]=GetQuantumRange((size_t) jas_image_cmptprec(jp2_image,
      components[i]));
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (Quantum *) NULL)
      break;
    for (i=0; i < (ssize_t) number_components; i++)
      (void) jas_image_readcmpt(jp2_image,(short) components[i],0,
        (jas_image_coord_t) (y/y_step[i]),(jas_image_coord_t) (image->columns/
        x_step[i]),1,pixels[i]);
    switch (number_components)
    {
      case 1:
      {
        /*
          Grayscale.
        */
        for (x=0; x < (ssize_t) image->columns; x++)
        {
          pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]);
          SetPixelGray(image,ScaleAnyToQuantum((QuantumAny) pixel,range[0]),q);
          q+=GetPixelChannels(image);
        }
        break;
      }
      case 3:
      {
        /*
          RGB.
        */
        for (x=0; x < (ssize_t) image->columns; x++)
        {
          pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]);
          SetPixelRed(image,ScaleAnyToQuantum((QuantumAny) pixel,range[0]),q);
          pixel=(QuantumAny) jas_matrix_getv(pixels[1],x/x_step[1]);
          SetPixelGreen(image,ScaleAnyToQuantum((QuantumAny) pixel,range[1]),q);

开发者ID:0xPr0xy，项目名称:ImageMagick，代码行数:67，代码来源:jp2.c

示例15: WriteHISTOGRAMImage


//.........这里部分代码省略.........
    if (p == (const PixelPacket *) NULL)
      break;
    for (x=0; x < (long) image->columns; x++)
    {
      if ((channel & RedChannel) != 0)
        histogram[ScaleQuantumToChar(p->red)].red++;
      if ((channel & GreenChannel) != 0)
        histogram[ScaleQuantumToChar(p->green)].green++;
      if ((channel & BlueChannel) != 0)
        histogram[ScaleQuantumToChar(p->blue)].blue++;
      p++;
    }
  }
  maximum=histogram[0].red;
  for (x=0; x < (long) histogram_image->columns; x++)
  {
    if (((channel & RedChannel) != 0) && (maximum < histogram[x].red))
      maximum=histogram[x].red;
    if (((channel & GreenChannel) != 0) && (maximum < histogram[x].green))
      maximum=histogram[x].green;
    if (((channel & BlueChannel) != 0) && (maximum < histogram[x].blue))
      maximum=histogram[x].blue;
  }
  scale=(MagickRealType) histogram_image->rows/maximum;
  /*
    Initialize histogram image.
  */
  exception=(&image->exception);
  (void) QueryColorDatabase("#000000",&histogram_image->background_color,
    &image->exception);
  (void) SetImageBackgroundColor(histogram_image);
  for (x=0; x < (long) histogram_image->columns; x++)
  {
    q=GetAuthenticPixels(histogram_image,x,0,1,histogram_image->rows,exception);
    if (q == (PixelPacket *) NULL)
      break;
    if ((channel & RedChannel) != 0)
      {
        y=(long) (histogram_image->rows-scale*histogram[x].red+0.5);
        r=q+y;
        for ( ; y < (long) histogram_image->rows; y++)
        {
          r->red=(Quantum) QuantumRange;
          r++;
        }
      }
    if ((channel & GreenChannel) != 0)
      {
        y=(long) (histogram_image->rows-scale*histogram[x].green+0.5);
        r=q+y;
        for ( ; y < (long) histogram_image->rows; y++)
        {
          r->green=(Quantum) QuantumRange;
          r++;
        }
      }
    if ((channel & BlueChannel) != 0)
      {
        y=(long) (histogram_image->rows-scale*histogram[x].blue+0.5);
        r=q+y;
        for ( ; y < (long) histogram_image->rows; y++)
        {
          r->blue=(Quantum) QuantumRange;
          r++;
        }
      }

开发者ID:0xPr0xy，项目名称:ImageMagick，代码行数:67，代码来源:histogram.c

示例16: assert


//.........这里部分代码省略.........
        jas_image_destroy(jp2_image);
        ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
      }
  }
  image->depth=maximum_component_depth;
  if (image_info->ping != MagickFalse)
    {
      (void) jas_stream_close(jp2_stream);
      jas_image_destroy(jp2_image);
      return(GetFirstImageInList(image));
    }
  for (i=0; i < (long) number_components; i++)
  {
    long
      j;

    map[i]=(QuantumAny *) AcquireQuantumMemory(MaxMap+1,sizeof(**map));
    if (map[i] == (QuantumAny *) NULL)
      {
        for (--i; i >= 0; i--)
          map[i]=(QuantumAny *) RelinquishMagickMemory(map[i]);
        for (i=0; i < (long) number_components; i++)
          jas_matrix_destroy(pixels[i]);
        jas_image_destroy(jp2_image);
        ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
      }
    range=GetQuantumRange((unsigned long) jas_image_cmptprec(jp2_image,
      components[i]));
    for (j=0; j <= (long) MaxMap; j++)
      map[i][j]=ScaleQuantumToMap(ScaleAnyToQuantum((QuantumAny) j,range));
  }
  for (y=0; y < (long) image->rows; y++)
  {
    q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (PixelPacket *) NULL)
      break;
    for (i=0; i < (long) number_components; i++)
      (void) jas_image_readcmpt(jp2_image,(short) components[i],0,
        ((unsigned int) y)/y_step[i],((unsigned int) image->columns)/x_step[i],
        1,pixels[i]);
    switch (number_components)
    {
      case 1:
      {
        /*
          Grayscale.
        */
        for (x=0; x < (long) image->columns; x++)
        {
          pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]);
          q->red=(Quantum) map[0][pixel];
          q->green=q->red;
          q->blue=q->red;
          q++;
        }
        break;
      }
      case 3:
      {
        /*
          RGB.
        */
        for (x=0; x < (long) image->columns; x++)
        {
          pixel=(QuantumAny) jas_matrix_getv(pixels[0],x/x_step[0]);
          q->red=(Quantum) map[0][pixel];

开发者ID:0xPr0xy，项目名称:ImageMagick，代码行数:67，代码来源:jp2.c

示例17: ReadRAWImage


//.........这里部分代码省略.........
    */
    if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
      if (image->scene >= (image_info->scene+image_info->number_scenes-1))
        break;
    status=SetImageExtent(image,image->columns,image->rows);
    if (status == MagickFalse)
      {
        InheritException(exception,&image->exception);
        return(DestroyImageList(image));
      }
    if (scene == 0)
      {
        length=GetQuantumExtent(canvas_image,quantum_info,quantum_type);
        pixels=(const unsigned char *) ReadBlobStream(image,length,
          GetQuantumPixels(quantum_info),&count);
      }
    for (y=0; y < (ssize_t) image->extract_info.height; y++)
    {
      register const PixelPacket
        *magick_restrict p;

      register PixelPacket
        *magick_restrict q;

      register ssize_t
        x;

      if (count != (ssize_t) length)
        {
          ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
            image->filename);
          break;
        }
      q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,exception);
      if (q == (PixelPacket *) NULL)
        break;
      length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,quantum_info,
        quantum_type,pixels,exception);
      if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
        break;
      if (((y-image->extract_info.y) >= 0) &&
          ((y-image->extract_info.y) < (ssize_t) image->rows))
        {
          p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0,
            image->columns,1,exception);
          q=QueueAuthenticPixels(image,0,y-image->extract_info.y,image->column

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C++ GetAuthenticPixels函数代码示例

示例1: ReadVIPSPixelsNONE

示例2: PlasmaPixel

示例3: PlasmaPixel

示例4: pixmagick_convert_py_image

示例5: ReadTXTImage

示例6: ReadTXTImage

示例7: GetBit

示例8: load_tile_rle

示例9: GetBit

示例10: assert

示例11: load_tile

示例12: ReadPANGOImage

示例13: ReadYCBCRImage

示例14: assert

示例15: WriteHISTOGRAMImage

示例16: assert

示例17: ReadRAWImage

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