+++ /dev/null
-///////////////////////////////////////////////////////////////////////////
-//
-// Copyright (c) 2004, 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,
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-// (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_RGBA_FILE_H
-#define INCLUDED_IMF_RGBA_FILE_H
-
-
-//-----------------------------------------------------------------------------
-//
-// Simplified RGBA image I/O
-//
-// class RgbaOutputFile
-// class RgbaInputFile
-//
-//-----------------------------------------------------------------------------
-
-#include <ImfHeader.h>
-#include <ImfFrameBuffer.h>
-#include <ImfRgba.h>
-#include "ImathVec.h"
-#include "ImathBox.h"
-#include "half.h"
-#include <ImfThreading.h>
-
-namespace Imf {
-
-
-class OutputFile;
-class InputFile;
-struct PreviewRgba;
-
-//
-// RGBA output file.
-//
-
-class RgbaOutputFile
-{
- public:
-
- //---------------------------------------------------
- // Constructor -- header is constructed by the caller
- //---------------------------------------------------
-
- RgbaOutputFile (const char name[],
- const Header &header,
- RgbaChannels rgbaChannels = WRITE_RGBA,
- int numThreads = globalThreadCount());
-
-
- //----------------------------------------------------
- // Constructor -- header is constructed by the caller,
- // file is opened by the caller, destructor will not
- // automatically close the file.
- //----------------------------------------------------
-
- RgbaOutputFile (OStream &os,
- const Header &header,
- RgbaChannels rgbaChannels = WRITE_RGBA,
- int numThreads = globalThreadCount());
-
-
- //----------------------------------------------------------------
- // Constructor -- header data are explicitly specified as function
- // call arguments (empty dataWindow means "same as displayWindow")
- //----------------------------------------------------------------
-
- RgbaOutputFile (const char name[],
- const Imath::Box2i &displayWindow,
- const Imath::Box2i &dataWindow = Imath::Box2i(),
- RgbaChannels rgbaChannels = WRITE_RGBA,
- float pixelAspectRatio = 1,
- const Imath::V2f screenWindowCenter = Imath::V2f (0, 0),
- float screenWindowWidth = 1,
- LineOrder lineOrder = INCREASING_Y,
- Compression compression = PIZ_COMPRESSION,
- int numThreads = globalThreadCount());
-
-
- //-----------------------------------------------
- // Constructor -- like the previous one, but both
- // the display window and the data window are
- // Box2i (V2i (0, 0), V2i (width - 1, height -1))
- //-----------------------------------------------
-
- RgbaOutputFile (const char name[],
- int width,
- int height,
- RgbaChannels rgbaChannels = WRITE_RGBA,
- float pixelAspectRatio = 1,
- const Imath::V2f screenWindowCenter = Imath::V2f (0, 0),
- float screenWindowWidth = 1,
- LineOrder lineOrder = INCREASING_Y,
- Compression compression = PIZ_COMPRESSION,
- int numThreads = globalThreadCount());
-
-
- //-----------
- // Destructor
- //-----------
-
- virtual ~RgbaOutputFile ();
-
-
- //------------------------------------------------
- // Define a frame buffer as the pixel data source:
- // Pixel (x, y) is at address
- //
- // base + x * xStride + y * yStride
- //
- //------------------------------------------------
-
- void setFrameBuffer (const Rgba *base,
- size_t xStride,
- size_t yStride);
-
-
- //---------------------------------------------
- // Write pixel data (see class Imf::OutputFile)
- //---------------------------------------------
-
- void writePixels (int numScanLines = 1);
- int currentScanLine () const;
-
-
- //--------------------------
- // Access to the file header
- //--------------------------
-
- const Header & header () const;
- const FrameBuffer & frameBuffer () const;
- const Imath::Box2i & displayWindow () const;
- const Imath::Box2i & dataWindow () const;
- float pixelAspectRatio () const;
- const Imath::V2f screenWindowCenter () const;
- float screenWindowWidth () const;
- LineOrder lineOrder () const;
- Compression compression () const;
- RgbaChannels channels () const;
-
-
- // --------------------------------------------------------------------
- // Update the preview image (see Imf::OutputFile::updatePreviewImage())
- // --------------------------------------------------------------------
-
- void updatePreviewImage (const PreviewRgba[]);
-
-
- //-----------------------------------------------------------------------
- // Rounding control for luminance/chroma images:
- //
- // If the output file contains luminance and chroma channels (WRITE_YC
- // or WRITE_YCA), then the the significands of the luminance and
- // chroma values are rounded to roundY and roundC bits respectively (see
- // function half::round()). Rounding improves compression with minimal
- // image degradation, usually much less than the degradation caused by
- // chroma subsampling. By default, roundY is 7, and roundC is 5.
- //
- // If the output file contains RGB channels or a luminance channel,
- // without chroma, then no rounding is performed.
- //-----------------------------------------------------------------------
-
- void setYCRounding (unsigned int roundY,
- unsigned int roundC);
-
-
- //----------------------------------------------------
- // Break a scan line -- for testing and debugging only
- // (see Imf::OutputFile::updatePreviewImage()
- //
- // Warning: Calling this function usually results in a
- // broken image file. The file or parts of it may not
- // be readable, or the file may contain bad data.
- //
- //----------------------------------------------------
-
- void breakScanLine (int y,
- int offset,
- int length,
- char c);
- private:
-
- RgbaOutputFile (const RgbaOutputFile &); // not implemented
- RgbaOutputFile & operator = (const RgbaOutputFile &); // not implemented
-
- class ToYca;
-
- OutputFile * _outputFile;
- ToYca * _toYca;
-};
-
-
-//
-// RGBA input file
-//
-
-class RgbaInputFile
-{
- public:
-
- //-------------------------------------------------------
- // Constructor -- opens the file with the specified name,
- // destructor will automatically close the file.
- //-------------------------------------------------------
-
- RgbaInputFile (const char name[], int numThreads = globalThreadCount());
-
-
- //-----------------------------------------------------------
- // Constructor -- attaches the new RgbaInputFile object to a
- // file that has already been opened by the caller.
- // Destroying the RgbaInputFile object will not automatically
- // close the file.
- //-----------------------------------------------------------
-
- RgbaInputFile (IStream &is, int numThreads = globalThreadCount());
-
-
- //-----------
- // Destructor
- //-----------
-
- virtual ~RgbaInputFile ();
-
- //-----------------------------------------------------
- // Define a frame buffer as the pixel data destination:
- // Pixel (x, y) is at address
- //
- // base + x * xStride + y * yStride
- //
- //-----------------------------------------------------
-
- void setFrameBuffer (Rgba *base,
- size_t xStride,
- size_t yStride);
-
-
- //-------------------------------------------
- // Read pixel data (see class Imf::InputFile)
- //-------------------------------------------
-
- void readPixels (int scanLine1, int scanLine2);
- void readPixels (int scanLine);
-
-
- //--------------------------
- // Access to the file header
- //--------------------------
-
- const Header & header () const;
- const FrameBuffer & frameBuffer () const;
- const Imath::Box2i & displayWindow () const;
- const Imath::Box2i & dataWindow () const;
- float pixelAspectRatio () const;
- const Imath::V2f screenWindowCenter () const;
- float screenWindowWidth () const;
- LineOrder lineOrder () const;
- Compression compression () const;
- RgbaChannels channels () const;
- const char * fileName () const;
- bool isComplete () const;
-
- //----------------------------------
- // Access to the file format version
- //----------------------------------
-
- int version () const;
-
- private:
-
- RgbaInputFile (const RgbaInputFile &); // not implemented
- RgbaInputFile & operator = (const RgbaInputFile &); // not implemented
-
- class FromYca;
-
- InputFile * _inputFile;
- FromYca * _fromYca;
-};
-
-
-} // namespace Imf
-
-#endif
projects / opencv / blobdiff