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480 lines
16 KiB
C++
480 lines
16 KiB
C++
///////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2004, Industrial Light & Magic, a division of Lucas
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// Digital Ltd. LLC
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Industrial Light & Magic nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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///////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDED_IMF_TILED_RGBA_FILE_H
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#define INCLUDED_IMF_TILED_RGBA_FILE_H
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//-----------------------------------------------------------------------------
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//
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// Simplified RGBA image I/O for tiled files
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//
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// class TiledRgbaOutputFile
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// class TiledRgbaInputFile
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//
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//-----------------------------------------------------------------------------
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#include <ImfHeader.h>
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#include <ImfFrameBuffer.h>
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#include "ImathVec.h"
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#include "ImathBox.h"
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#include "half.h"
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#include <ImfTileDescription.h>
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#include <ImfRgba.h>
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#include <ImfThreading.h>
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#include <string>
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namespace Imf {
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class TiledOutputFile;
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class TiledInputFile;
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struct PreviewRgba;
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//
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// Tiled RGBA output file.
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//
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class TiledRgbaOutputFile
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{
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public:
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//---------------------------------------------------
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// Constructor -- rgbaChannels, tileXSize, tileYSize,
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// levelMode, and levelRoundingMode overwrite the
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// channel list and tile description attribute in the
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// header that is passed as an argument to the
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// constructor.
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//---------------------------------------------------
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TiledRgbaOutputFile (const char name[],
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const Header &header,
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RgbaChannels rgbaChannels,
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int tileXSize,
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int tileYSize,
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LevelMode mode,
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LevelRoundingMode rmode = ROUND_DOWN,
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int numThreads = globalThreadCount ());
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//---------------------------------------------------
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// Constructor -- like the previous one, but the new
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// TiledRgbaOutputFile is attached to a file that has
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// already been opened by the caller. Destroying
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// TiledRgbaOutputFileObjects constructed with this
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// constructor does not automatically close the
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// corresponding files.
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//---------------------------------------------------
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TiledRgbaOutputFile (OStream &os,
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const Header &header,
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RgbaChannels rgbaChannels,
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int tileXSize,
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int tileYSize,
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LevelMode mode,
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LevelRoundingMode rmode = ROUND_DOWN,
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int numThreads = globalThreadCount ());
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//------------------------------------------------------
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// Constructor -- header data are explicitly specified
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// as function call arguments (an empty dataWindow means
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// "same as displayWindow")
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//------------------------------------------------------
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TiledRgbaOutputFile (const char name[],
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int tileXSize,
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int tileYSize,
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LevelMode mode,
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LevelRoundingMode rmode,
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const Imath::Box2i &displayWindow,
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const Imath::Box2i &dataWindow = Imath::Box2i(),
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RgbaChannels rgbaChannels = WRITE_RGBA,
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float pixelAspectRatio = 1,
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const Imath::V2f screenWindowCenter =
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Imath::V2f (0, 0),
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float screenWindowWidth = 1,
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LineOrder lineOrder = INCREASING_Y,
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Compression compression = ZIP_COMPRESSION,
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int numThreads = globalThreadCount ());
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//-----------------------------------------------
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// Constructor -- like the previous one, but both
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// the display window and the data window are
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// Box2i (V2i (0, 0), V2i (width - 1, height -1))
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//-----------------------------------------------
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TiledRgbaOutputFile (const char name[],
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int width,
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int height,
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int tileXSize,
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int tileYSize,
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LevelMode mode,
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LevelRoundingMode rmode = ROUND_DOWN,
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RgbaChannels rgbaChannels = WRITE_RGBA,
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float pixelAspectRatio = 1,
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const Imath::V2f screenWindowCenter =
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Imath::V2f (0, 0),
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float screenWindowWidth = 1,
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LineOrder lineOrder = INCREASING_Y,
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Compression compression = ZIP_COMPRESSION,
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int numThreads = globalThreadCount ());
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virtual ~TiledRgbaOutputFile ();
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//------------------------------------------------
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// Define a frame buffer as the pixel data source:
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// Pixel (x, y) is at address
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//
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// base + x * xStride + y * yStride
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//
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//------------------------------------------------
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void setFrameBuffer (const Rgba *base,
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size_t xStride,
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size_t yStride);
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//--------------------------
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// Access to the file header
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//--------------------------
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const Header & header () const;
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const FrameBuffer & frameBuffer () const;
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const Imath::Box2i & displayWindow () const;
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const Imath::Box2i & dataWindow () const;
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float pixelAspectRatio () const;
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const Imath::V2f screenWindowCenter () const;
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float screenWindowWidth () const;
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LineOrder lineOrder () const;
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Compression compression () const;
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RgbaChannels channels () const;
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//----------------------------------------------------
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// Utility functions (same as in Imf::TiledOutputFile)
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//----------------------------------------------------
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unsigned int tileXSize () const;
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unsigned int tileYSize () const;
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LevelMode levelMode () const;
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LevelRoundingMode levelRoundingMode () const;
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int numLevels () const;
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int numXLevels () const;
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int numYLevels () const;
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bool isValidLevel (int lx, int ly) const;
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int levelWidth (int lx) const;
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int levelHeight (int ly) const;
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int numXTiles (int lx = 0) const;
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int numYTiles (int ly = 0) const;
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Imath::Box2i dataWindowForLevel (int l = 0) const;
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Imath::Box2i dataWindowForLevel (int lx, int ly) const;
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Imath::Box2i dataWindowForTile (int dx, int dy,
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int l = 0) const;
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Imath::Box2i dataWindowForTile (int dx, int dy,
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int lx, int ly) const;
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//------------------------------------------------------------------
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// Write pixel data:
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//
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// writeTile(dx, dy, lx, ly) writes the tile with tile
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// coordinates (dx, dy), and level number (lx, ly) to
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// the file.
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//
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// dx must lie in the interval [0, numXTiles(lx)-1]
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// dy must lie in the interval [0, numYTiles(ly)-1]
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//
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// lx must lie in the interval [0, numXLevels()-1]
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// ly must lie in the inverval [0, numYLevels()-1]
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//
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// writeTile(dx, dy, level) is a convenience function
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// used for ONE_LEVEL and MIPMAP_LEVEL files. It calls
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// writeTile(dx, dy, level, level).
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//
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// The two writeTiles(dx1, dx2, dy1, dy2, ...) functions allow
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// writing multiple tiles at once. If multi-threading is used
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// multiple tiles are written concurrently.
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//
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// Pixels that are outside the pixel coordinate range for the tile's
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// level, are never accessed by writeTile().
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//
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// Each tile in the file must be written exactly once.
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//
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//------------------------------------------------------------------
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void writeTile (int dx, int dy, int l = 0);
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void writeTile (int dx, int dy, int lx, int ly);
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void writeTiles (int dxMin, int dxMax, int dyMin, int dyMax,
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int lx, int ly);
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void writeTiles (int dxMin, int dxMax, int dyMin, int dyMax,
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int l = 0);
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// -------------------------------------------------------------------------
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// Update the preview image (see Imf::TiledOutputFile::updatePreviewImage())
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// -------------------------------------------------------------------------
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void updatePreviewImage (const PreviewRgba[]);
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//------------------------------------------------
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// Break a tile -- for testing and debugging only
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// (see Imf::TiledOutputFile::breakTile())
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//
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// Warning: Calling this function usually results
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// in a broken image file. The file or parts of
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// it may not be readable, or the file may contain
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// bad data.
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//
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//------------------------------------------------
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void breakTile (int dx, int dy,
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int lx, int ly,
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int offset,
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int length,
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char c);
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private:
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//
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// Copy constructor and assignment are not implemented
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//
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TiledRgbaOutputFile (const TiledRgbaOutputFile &);
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TiledRgbaOutputFile & operator = (const TiledRgbaOutputFile &);
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class ToYa;
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TiledOutputFile * _outputFile;
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ToYa * _toYa;
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};
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//
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// Tiled RGBA input file
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//
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class TiledRgbaInputFile
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{
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public:
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//--------------------------------------------------------
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// Constructor -- opens the file with the specified name.
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// Destroying TiledRgbaInputFile objects constructed with
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// this constructor automatically closes the corresponding
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// files.
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//--------------------------------------------------------
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TiledRgbaInputFile (const char name[],
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int numThreads = globalThreadCount ());
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//-------------------------------------------------------
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// Constructor -- attaches the new TiledRgbaInputFile
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// object to a file that has already been opened by the
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// caller.
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// Destroying TiledRgbaInputFile objects constructed with
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// this constructor does not automatically close the
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// corresponding files.
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//-------------------------------------------------------
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TiledRgbaInputFile (IStream &is, int numThreads = globalThreadCount ());
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//------------------------------------------------------------
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// Constructors -- the same as the previous two, but the names
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// of the red, green, blue, alpha, and luminance channels are
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// expected to be layerName.R, layerName.G, etc.
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//------------------------------------------------------------
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TiledRgbaInputFile (const char name[],
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const std::string &layerName,
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int numThreads = globalThreadCount());
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TiledRgbaInputFile (IStream &is,
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const std::string &layerName,
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int numThreads = globalThreadCount());
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//-----------
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// Destructor
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//-----------
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virtual ~TiledRgbaInputFile ();
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//-----------------------------------------------------
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// Define a frame buffer as the pixel data destination:
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// Pixel (x, y) is at address
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//
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// base + x * xStride + y * yStride
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//
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//-----------------------------------------------------
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void setFrameBuffer (Rgba *base,
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size_t xStride,
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size_t yStride);
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//-------------------------------------------------------------------
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// Switch to a different layer -- subsequent calls to readTile()
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// and readTiles() will read channels layerName.R, layerName.G, etc.
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// After each call to setLayerName(), setFrameBuffer() must be called
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// at least once before the next call to readTile() or readTiles().
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//-------------------------------------------------------------------
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void setLayerName (const std::string &layerName);
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//--------------------------
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// Access to the file header
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//--------------------------
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const Header & header () const;
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const FrameBuffer & frameBuffer () const;
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const Imath::Box2i & displayWindow () const;
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const Imath::Box2i & dataWindow () const;
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float pixelAspectRatio () const;
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const Imath::V2f screenWindowCenter () const;
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float screenWindowWidth () const;
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LineOrder lineOrder () const;
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Compression compression () const;
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RgbaChannels channels () const;
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const char * fileName () const;
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bool isComplete () const;
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//----------------------------------
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// Access to the file format version
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//----------------------------------
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int version () const;
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//---------------------------------------------------
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// Utility functions (same as in Imf::TiledInputFile)
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//---------------------------------------------------
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unsigned int tileXSize () const;
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unsigned int tileYSize () const;
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LevelMode levelMode () const;
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LevelRoundingMode levelRoundingMode () const;
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int numLevels () const;
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int numXLevels () const;
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int numYLevels () const;
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bool isValidLevel (int lx, int ly) const;
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int levelWidth (int lx) const;
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int levelHeight (int ly) const;
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int numXTiles (int lx = 0) const;
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int numYTiles (int ly = 0) const;
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Imath::Box2i dataWindowForLevel (int l = 0) const;
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Imath::Box2i dataWindowForLevel (int lx, int ly) const;
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Imath::Box2i dataWindowForTile (int dx, int dy,
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int l = 0) const;
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Imath::Box2i dataWindowForTile (int dx, int dy,
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int lx, int ly) const;
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//----------------------------------------------------------------
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// Read pixel data:
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//
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// readTile(dx, dy, lx, ly) reads the tile with tile
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// coordinates (dx, dy), and level number (lx, ly),
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// and stores it in the current frame buffer.
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//
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// dx must lie in the interval [0, numXTiles(lx)-1]
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// dy must lie in the interval [0, numYTiles(ly)-1]
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//
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// lx must lie in the interval [0, numXLevels()-1]
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// ly must lie in the inverval [0, numYLevels()-1]
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//
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// readTile(dx, dy, level) is a convenience function used
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// for ONE_LEVEL and MIPMAP_LEVELS files. It calls
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// readTile(dx, dy, level, level).
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//
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// The two readTiles(dx1, dx2, dy1, dy2, ...) functions allow
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// reading multiple tiles at once. If multi-threading is used
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// multiple tiles are read concurrently.
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//
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// Pixels that are outside the pixel coordinate range for the
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// tile's level, are never accessed by readTile().
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//
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// Attempting to access a tile that is not present in the file
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// throws an InputExc exception.
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//
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//----------------------------------------------------------------
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void readTile (int dx, int dy, int l = 0);
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void readTile (int dx, int dy, int lx, int ly);
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void readTiles (int dxMin, int dxMax,
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int dyMin, int dyMax, int lx, int ly);
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void readTiles (int dxMin, int dxMax,
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int dyMin, int dyMax, int l = 0);
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private:
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//
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// Copy constructor and assignment are not implemented
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//
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TiledRgbaInputFile (const TiledRgbaInputFile &);
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TiledRgbaInputFile & operator = (const TiledRgbaInputFile &);
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class FromYa;
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TiledInputFile * _inputFile;
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FromYa * _fromYa;
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std::string _channelNamePrefix;
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};
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} // namespace Imf
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#endif
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