Added: trunk/Tools/DumpRenderTree/efl/ImageDiff.cpp (0 => 89175)
--- trunk/Tools/DumpRenderTree/efl/ImageDiff.cpp (rev 0)
+++ trunk/Tools/DumpRenderTree/efl/ImageDiff.cpp 2011-06-17 21:56:38 UTC (rev 89175)
@@ -0,0 +1,348 @@
+/*
+ * Copyright (C) 2009 Zan Dobersek <[email protected]>
+ * Copyright (C) 2010 Igalia S.L.
+ * Copyright (C) 2011 ProFUSION Embedded Systems
+ * Copyright (C) 2011 Samsung Electronics
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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.
+ */
+
+#include "config.h"
+
+#include <Ecore.h>
+#include <Ecore_Evas.h>
+#include <Evas.h>
+#include <algorithm>
+#include <cmath>
+#include <cstdio>
+#include <cstdlib>
+#include <getopt.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <wtf/OwnArrayPtr.h>
+#include <wtf/OwnPtr.h>
+#include <wtf/PassOwnPtr.h>
+
+enum PixelComponent {
+ Red,
+ Green,
+ Blue,
+ Alpha
+};
+
+static OwnPtr<Ecore_Evas> gEcoreEvas;
+static double gTolerance = 0;
+
+static void abortWithErrorMessage(const char* errorMessage);
+
+static unsigned char* pixelFromImageData(unsigned char* imageData, int rowStride, int x, int y)
+{
+ return imageData + (y * rowStride) + (x << 2);
+}
+
+static Evas_Object* differenceImageFromDifferenceBuffer(Evas* evas, unsigned char* buffer, int width, int height)
+{
+ Evas_Object* image = evas_object_image_filled_add(evas);
+ if (!image)
+ abortWithErrorMessage("could not create difference image");
+
+ evas_object_image_size_set(image, width, height);
+ evas_object_image_colorspace_set(image, EVAS_COLORSPACE_ARGB8888);
+
+ unsigned char* diffPixels = static_cast<unsigned char*>(evas_object_image_data_get(image, EINA_TRUE));
+ const int rowStride = evas_object_image_stride_get(image);
+ for (int x = 0; x < width; x++) {
+ for (int y = 0; y < height; y++) {
+ unsigned char* diffPixel = pixelFromImageData(diffPixels, rowStride, x, y);
+ diffPixel[Red] = diffPixel[Green] = diffPixel[Blue] = *buffer++;
+ diffPixel[Alpha] = 0xff;
+ }
+ }
+
+ return image;
+}
+
+static float computeDistanceBetweenPixelComponents(unsigned char actualComponent, unsigned char baseComponent)
+{
+ return (actualComponent - baseComponent) / std::max<float>(255 - baseComponent, baseComponent);
+}
+
+static float computeDistanceBetweenPixelComponents(unsigned char* actualPixel, unsigned char* basePixel, PixelComponent component)
+{
+ return computeDistanceBetweenPixelComponents(actualPixel[component], basePixel[component]);
+}
+
+static float calculatePixelDifference(unsigned char* basePixel, unsigned char* actualPixel)
+{
+ const float red = computeDistanceBetweenPixelComponents(actualPixel, basePixel, Red);
+ const float green = computeDistanceBetweenPixelComponents(actualPixel, basePixel, Green);
+ const float blue = computeDistanceBetweenPixelComponents(actualPixel, basePixel, Blue);
+ const float alpha = computeDistanceBetweenPixelComponents(actualPixel, basePixel, Alpha);
+ return sqrtf(red * red + green * green + blue * blue + alpha * alpha) / 2.0f;
+}
+
+static float calculateDifference(const Evas_Object* baselineImage, const Evas_Object* actualImage, OwnPtr<Evas_Object>& differenceImage)
+{
+ int width, height, baselineWidth, baselineHeight;
+ evas_object_image_size_get(actualImage, &width, &height);
+ evas_object_image_size_get(baselineImage, &baselineWidth, &baselineHeight);
+
+ if (width != baselineWidth || height != baselineHeight) {
+ printf("Error, test and reference image have different sizes.\n");
+ return 100; // Completely different.
+ }
+
+ OwnArrayPtr<unsigned char> diffBuffer = adoptArrayPtr(new unsigned char[width * height]);
+ if (!diffBuffer)
+ abortWithErrorMessage("could not create difference buffer");
+
+ const int actualRowStride = evas_object_image_stride_get(actualImage);
+ const int baseRowStride = evas_object_image_stride_get(baselineImage);
+ unsigned numberOfDifferentPixels = 0;
+ float totalDistance = 0;
+ float maxDistance = 0;
+ unsigned char* actualPixels = static_cast<unsigned char*>(evas_object_image_data_get(actualImage, EINA_FALSE));
+ unsigned char* basePixels = static_cast<unsigned char*>(evas_object_image_data_get(baselineImage, EINA_FALSE));
+ unsigned char* currentDiffPixel = diffBuffer.get();
+
+ for (int x = 0; x < width; x++) {
+ for (int y = 0; y < height; y++) {
+ unsigned char* actualPixel = pixelFromImageData(actualPixels, actualRowStride, x, y);
+ unsigned char* basePixel = pixelFromImageData(basePixels, baseRowStride, x, y);
+
+ const float distance = calculatePixelDifference(basePixel, actualPixel);
+ *currentDiffPixel++ = static_cast<unsigned char>(distance * 255.0f);
+
+ if (distance >= 1.0f / 255.0f) {
+ ++numberOfDifferentPixels;
+ totalDistance += distance;
+ maxDistance = std::max<float>(maxDistance, distance);
+ }
+ }
+ }
+
+ // Compute the difference as a percentage combining both the number of
+ // different pixels and their difference amount i.e. the average distance
+ // over the entire image
+ float difference = 0;
+ if (numberOfDifferentPixels)
+ difference = 100.0f * totalDistance / (height * width);
+ if (difference <= gTolerance)
+ difference = 0;
+ else {
+ difference = roundf(difference * 100.0f) / 100.0f;
+ difference = std::max(difference, 0.01f); // round to 2 decimal places
+
+ differenceImage = adoptPtr(differenceImageFromDifferenceBuffer(evas_object_evas_get(baselineImage), diffBuffer.get(), width, height));
+ }
+
+ return difference;
+}
+
+static int getTemporaryFile(char *fileName, size_t fileNameLength)
+{
+ char* tempDirectory = getenv("TMPDIR");
+ if (!tempDirectory)
+ tempDirectory = getenv("TEMP");
+
+ if (tempDirectory)
+ snprintf(fileName, fileNameLength, "%s/ImageDiffXXXXXX.png", tempDirectory);
+ else {
+#if __linux__
+ strcpy(fileName, "/dev/shm/ImageDiffXXXXXX.png");
+ const int fileDescriptor = mkstemps(fileName, sizeof(".png") - 1);
+ if (fileDescriptor >= 0)
+ return fileDescriptor;
+#endif // __linux__
+
+ strcpy(fileName, "ImageDiffXXXXXX.png");
+ }
+
+ return mkstemps(fileName, sizeof(".png") - 1);
+}
+
+static void printImage(Evas_Object* image)
+{
+ char fileName[PATH_MAX];
+
+ const int tempImageFd = getTemporaryFile(fileName, PATH_MAX);
+ if (tempImageFd == -1)
+ abortWithErrorMessage("could not create temporary file");
+
+ if (evas_object_image_save(image, fileName, 0, 0)) {
+ struct stat fileInfo;
+ if (!stat(fileName, &fileInfo)) {
+ printf("Content-Length: %ld\n", fileInfo.st_size);
+ fflush(stdout);
+
+ unsigned char buffer[2048];
+ ssize_t bytesRead;
+ while ((bytesRead = read(tempImageFd, buffer, sizeof(buffer))) > 0)
+ write(1, buffer, bytesRead);
+ }
+ }
+ close(tempImageFd);
+ unlink(fileName);
+}
+
+static void printImageDifferences(const Evas_Object* baselineImage, Evas_Object* actualImage)
+{
+ OwnPtr<Evas_Object> differenceImage;
+ const float difference = calculateDifference(baselineImage, actualImage, differenceImage);
+
+ if (difference > 0.0f) {
+ if (differenceImage)
+ printImage(differenceImage.get());
+
+ printf("diff: %01.2f%% failed\n", difference);
+ } else
+ printf("diff: %01.2f%% passed\n", difference);
+}
+
+static void resizeEcoreEvasIfNeeded(Evas_Object* image)
+{
+ int newWidth, newHeight;
+ evas_object_image_size_get(image, &newWidth, &newHeight);
+
+ int currentWidth, currentHeight;
+ ecore_evas_screen_geometry_get(gEcoreEvas.get(), 0, 0, ¤tWidth, ¤tHeight);
+
+ if (newWidth > currentWidth)
+ currentWidth = newWidth;
+ if (newHeight > currentHeight)
+ currentHeight = newHeight;
+
+ ecore_evas_resize(gEcoreEvas.get(), currentWidth, currentHeight);
+}
+
+static PassOwnPtr<Evas_Object> readImageFromStdin(Evas* evas, long imageSize)
+{
+ OwnArrayPtr<unsigned char> imageBuffer = adoptArrayPtr(new unsigned char[imageSize]);
+ if (!imageBuffer)
+ abortWithErrorMessage("cannot allocate image");
+
+ const size_t bytesRead = fread(imageBuffer.get(), 1, imageSize, stdin);
+ if (!bytesRead)
+ return PassOwnPtr<Evas_Object>();
+
+ Evas_Object* image = evas_object_image_filled_add(evas);
+ evas_object_image_memfile_set(image, imageBuffer.get(), bytesRead, 0, 0);
+ evas_object_image_colorspace_set(image, EVAS_COLORSPACE_ARGB8888);
+
+ resizeEcoreEvasIfNeeded(image);
+
+ return adoptPtr(image);
+}
+
+static bool parseCommandLineOptions(int argc, char** argv)
+{
+ static const option options[] = {
+ { "tolerance", required_argument, 0, 't' },
+ { 0, 0, 0, 0 }
+ };
+ int option;
+
+ while ((option = getopt_long(argc, (char* const*)argv, "t:", options, 0)) != -1) {
+ switch (option) {
+ case 't':
+ gTolerance = atof(optarg);
+ break;
+ case '?':
+ case ':':
+ return false;
+ }
+ }
+
+ return true;
+}
+
+static void shutdownEfl()
+{
+ ecore_evas_shutdown();
+ ecore_shutdown();
+ evas_shutdown();
+}
+
+static void abortWithErrorMessage(const char* errorMessage)
+{
+ shutdownEfl();
+
+ printf("Error, %s.\n", errorMessage);
+ exit(EXIT_FAILURE);
+}
+
+static Evas* initEfl()
+{
+ evas_init();
+ ecore_init();
+ ecore_evas_init();
+
+ gEcoreEvas = adoptPtr(ecore_evas_buffer_new(1, 1));
+ Evas* evas = ecore_evas_get(gEcoreEvas.get());
+ if (!evas)
+ abortWithErrorMessage("could not create Ecore_Evas buffer");
+
+ return evas;
+}
+
+int main(int argc, char* argv[])
+{
+ if (!parseCommandLineOptions(argc, argv))
+ return EXIT_FAILURE;
+
+ Evas* evas = initEfl();
+
+ OwnPtr<Evas_Object> actualImage;
+ OwnPtr<Evas_Object> baselineImage;
+
+ char buffer[2048];
+ while (fgets(buffer, sizeof(buffer), stdin)) {
+ char* contentLengthStart = strstr(buffer, "Content-Length: ");
+ if (!contentLengthStart)
+ continue;
+ long imageSize;
+ if (sscanf(contentLengthStart, "Content-Length: %ld", &imageSize) == 1) {
+ if (imageSize <= 0)
+ abortWithErrorMessage("image size must be specified");
+
+ if (!actualImage)
+ actualImage = readImageFromStdin(evas, imageSize);
+ else if (!baselineImage)
+ baselineImage = readImageFromStdin(evas, imageSize);
+ else {
+ printImageDifferences(baselineImage.get(), actualImage.get());
+
+ actualImage.clear();
+ baselineImage.clear();
+ }
+ }
+
+ fflush(stdout);
+ }
+
+ shutdownEfl();
+ return EXIT_SUCCESS;
+}
