91 lines
3.1 KiB
C++
Executable File
91 lines
3.1 KiB
C++
Executable File
// ======================================================================== //
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// Copyright 2009-2014 Intel Corporation //
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// //
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// Licensed under the Apache License, Version 2.0 (the "License"); //
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// you may not use this file except in compliance with the License. //
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// You may obtain a copy of the License at //
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// //
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// http://www.apache.org/licenses/LICENSE-2.0 //
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// //
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// Unless required by applicable law or agreed to in writing, software //
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// distributed under the License is distributed on an "AS IS" BASIS, //
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. //
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// See the License for the specific language governing permissions and //
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// limitations under the License. //
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// ======================================================================== //
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#ifdef USE_OPENEXR
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#include "image/image.h"
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/* include OpenEXR headers */
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#ifdef __WIN32__
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#include <ImfRgbaFile.h>
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#include <ImfArray.h>
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#pragma comment (lib, "Half.lib")
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#pragma comment (lib, "Iex.lib")
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#pragma comment (lib, "IlmImf.lib")
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#pragma comment (lib, "IlmThread.lib")
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#pragma comment (lib, "Imath.lib")
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#pragma comment (lib, "zlib.lib")
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#else
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#include <ImfRgbaFile.h>
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#include <ImfArray.h>
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#endif
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namespace embree
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{
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/*! load an EXR file from disk */
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Ref<Image> loadExr(const FileName& filename)
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{
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Imf::RgbaInputFile file (filename.c_str());
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Imath::Box2i dw = file.dataWindow();
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ssize_t width = dw.max.x - dw.min.x + 1;
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ssize_t height = dw.max.y - dw.min.y + 1;
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Imf::Array2D<Imf::Rgba> pixels(height, width);
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file.setFrameBuffer (&pixels[0][0] - dw.min.x - dw.min.y * width, 1, width);
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file.readPixels (dw.min.y, dw.max.y);
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Ref<Image> img = new Image3f(width,height,filename);
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if (file.lineOrder() == Imf::INCREASING_Y) {
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for (ssize_t y=0; y<height; y++) {
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for (ssize_t x=0; x<width; x++) {
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Imf::Rgba c = pixels[y][x];
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img->set(x,y,Color4(c.r,c.g,c.b,c.a));
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}
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}
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}
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else {
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for (ssize_t y=0; y<height; y++) {
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for (ssize_t x=0; x<width; x++) {
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Imf::Rgba c = pixels[y][x];
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img->set(x,height-y-1,Color4(c.r,c.g,c.b,c.a));
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}
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}
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}
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return img;
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}
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/*! store an EXR file to disk */
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void storeExr(const Ref<Image>& img, const FileName& filename)
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{
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Imf::Array2D<Imf::Rgba> pixels(img->height,img->width);
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for (size_t y=0; y<img->height; y++) {
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for (size_t x=0; x<img->width; x++) {
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const Color4 c = img->get(x,y);
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pixels[y][x] = Imf::Rgba(c.r,c.g,c.b,c.a);
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}
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}
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Imf::RgbaOutputFile file(filename.c_str(), img->width, img->height, Imf::WRITE_RGBA);
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file.setFrameBuffer(&pixels[0][0], 1, img->width);
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file.writePixels(img->height);
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}
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}
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#endif // USE_OPENEXR
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