Update to 2.0.0 tree from current Fremantle build

[opencv] / 3rdparty / include / OpenEXR / ImfPreviewImage.h

diff --git a/3rdparty/include/OpenEXR/ImfPreviewImage.h b/3rdparty/include/OpenEXR/ImfPreviewImage.h
new file mode 100644 (file)
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+++ b/3rdparty/include/OpenEXR/ImfPreviewImage.h
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+///////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2003, Industrial Light & Magic, a division of Lucas
+// Digital Ltd. LLC
+// 
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+// *       Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// *       Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// *       Neither the name of Industrial Light & Magic nor the names of
+// its contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission. 
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+///////////////////////////////////////////////////////////////////////////
+
+
+#ifndef INCLUDED_IMF_PREVIEW_IMAGE_H
+#define INCLUDED_IMF_PREVIEW_IMAGE_H
+
+//-----------------------------------------------------------------------------
+//
+//     class PreviewImage -- a usually small, low-dynamic range image,
+//     that is intended to be stored in an image file's header.
+//
+//     struct PreviewRgba -- holds the value of a PreviewImage pixel.
+//
+//-----------------------------------------------------------------------------
+
+namespace Imf {
+
+
+struct PreviewRgba
+{
+    unsigned char      r;      // Red, green and blue components of
+    unsigned char      g;      // the pixel's color; intensity is
+    unsigned char      b;      // proportional to pow (x/255, 2.2),
+                               // where x is r, g, or b.
+
+    unsigned char      a;      // The pixel's alpha; 0 == transparent,
+                               // 255 == opaque.
+
+    PreviewRgba (unsigned char r = 0,
+                unsigned char g = 0,
+                unsigned char b = 0,
+                unsigned char a = 255)
+       : r(r), g(g), b(b), a(a) {}
+};
+
+
+class PreviewImage
+{
+  public:
+
+    //--------------------------------------------------------------------
+    // Constructor:
+    //
+    // PreviewImage(w,h,p) constructs a preview image with w by h pixels
+    // whose initial values are specified in pixel array p.  The x and y
+    // coordinates of the pixels in p go from 0 to w-1, and from 0 to h-1.
+    // The pixel with coordinates (x, y) is at address p + y*w + x.
+    // Pixel (0, 0) is in the upper left corner of the preview image.
+    // If p is zero, the pixels in the preview image are initialized with
+    // (r = 0, b = 0, g = 0, a = 255).
+    //
+    //--------------------------------------------------------------------
+   
+     PreviewImage (unsigned int width = 0,
+                  unsigned int height = 0,
+                  const PreviewRgba pixels[] = 0);
+
+    //-----------------------------------------------------
+    // Copy constructor, destructor and assignment operator
+    //-----------------------------------------------------
+
+     PreviewImage (const PreviewImage &other);
+    ~PreviewImage ();
+
+    PreviewImage &     operator = (const PreviewImage &other);
+
+
+    //-----------------------------------------------
+    // Access to width, height and to the pixel array
+    //-----------------------------------------------
+
+    unsigned int       width () const  {return _width;}
+    unsigned int       height () const {return _height;}
+
+    PreviewRgba *      pixels ()       {return _pixels;}
+    const PreviewRgba *        pixels () const {return _pixels;}
+
+
+    //----------------------------
+    // Access to individual pixels
+    //----------------------------
+
+    PreviewRgba &      pixel (unsigned int x, unsigned int y)
+                                       {return _pixels[y * _width + x];}
+
+    const PreviewRgba &        pixel (unsigned int x, unsigned int y) const
+                                       {return _pixels[y * _width + x];}
+
+  private:
+
+    unsigned int       _width;
+    unsigned int       _height;
+    PreviewRgba *      _pixels;
+};
+
+
+} // namespace Imf
+
+#endif