Revert "migrate skpdiff to tools"
This reverts commit 58a7ec70ce6b4548793a2ddc37c63d3d44edbc36.
git-svn-id: http://skia.googlecode.com/svn/trunk@10226 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/experimental/skpdiff/main.cpp b/experimental/skpdiff/main.cpp
new file mode 100644
index 0000000..d258c14
--- /dev/null
+++ b/experimental/skpdiff/main.cpp
@@ -0,0 +1,192 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#if SK_SUPPORT_OPENCL
+#define __NO_STD_VECTOR // Uses cl::vectpr instead of std::vectpr
+#define __NO_STD_STRING // Uses cl::STRING_CLASS instead of std::string
+#include <CL/cl.hpp>
+#endif
+
+#include "SkCommandLineFlags.h"
+#include "SkGraphics.h"
+#include "SkStream.h"
+#include "SkTDArray.h"
+
+#include "SkDifferentPixelsMetric.h"
+#include "SkDiffContext.h"
+#include "SkImageDiffer.h"
+#include "SkPMetric.h"
+#include "skpdiff_util.h"
+
+#include "SkForceLinking.h"
+__SK_FORCE_IMAGE_DECODER_LINKING;
+
+// Command line argument definitions go here
+DEFINE_bool2(list, l, false, "List out available differs");
+DEFINE_string2(differs, d, "", "The names of the differs to use or all of them by default");
+DEFINE_string2(folders, f, "", "Compare two folders with identical subfile names: <baseline folder> <test folder>");
+DEFINE_string2(patterns, p, "", "Use two patterns to compare images: <baseline> <test>");
+DEFINE_string2(output, o, "skpdiff_output.json", "Writes the output of these diffs to output: <output>");
+DEFINE_bool(jsonp, true, "Output JSON with padding");
+
+#if SK_SUPPORT_OPENCL
+/// A callback for any OpenCL errors
+CL_CALLBACK void error_notify(const char* errorInfo, const void* privateInfoSize, ::size_t cb, void* userData) {
+ SkDebugf("OpenCL error notify: %s\n", errorInfo);
+ exit(1);
+}
+
+/// Creates a device and context with OpenCL
+static bool init_device_and_context(cl::Device* device, cl::Context* context) {
+ // Query for a platform
+ cl::vector<cl::Platform> platformList;
+ cl::Platform::get(&platformList);
+ SkDebugf("The number of platforms is %u\n", platformList.size());
+
+ // Print some information about the platform for debugging
+ cl::Platform& platform = platformList[0];
+ cl::STRING_CLASS platformName;
+ platform.getInfo(CL_PLATFORM_NAME, &platformName);
+ SkDebugf("Platform index 0 is named %s\n", platformName.c_str());
+
+ // Query for a device
+ cl::vector<cl::Device> deviceList;
+ platform.getDevices(CL_DEVICE_TYPE_GPU, &deviceList);
+ SkDebugf("The number of GPU devices is %u\n", deviceList.size());
+
+ // Print some information about the device for debugging
+ *device = deviceList[0];
+ cl::STRING_CLASS deviceName;
+ device->getInfo(CL_DEVICE_NAME, &deviceName);
+ SkDebugf("Device index 0 is named %s\n", deviceName.c_str());
+
+ // Create a CL context and check for all errors
+ cl_int contextErr = CL_SUCCESS;
+ *context = cl::Context(deviceList, NULL, error_notify, NULL, &contextErr);
+ if (contextErr != CL_SUCCESS) {
+ SkDebugf("Context creation failed: %s\n", cl_error_to_string(contextErr));
+ return false;
+ }
+
+ return true;
+}
+
+static bool init_cl_diff(SkImageDiffer* differ) {
+ // Setup OpenCL
+ cl::Device device;
+ cl::Context context;
+ if (!init_device_and_context(&device, &context)) {
+ return false;
+ }
+
+ // Setup our differ of choice
+ SkCLImageDiffer* clDiffer = (SkCLImageDiffer*)differ;
+ return clDiffer->init(device(), context());
+}
+#endif
+
+// TODO Find a better home for the diff registry. One possibility is to have the differs self
+// register.
+
+// List here every differ
+SkDifferentPixelsMetric gDiffPixel;
+SkPMetric gPDiff;
+
+// A null terminated array of pointer to every differ declared above
+SkImageDiffer* gDiffers[] = { &gDiffPixel, &gPDiff, NULL };
+
+int main(int argc, char** argv) {
+ // Setup command line parsing
+ SkCommandLineFlags::SetUsage("Compare images using various metrics.");
+ SkCommandLineFlags::Parse(argc, argv);
+
+ // Needed by various Skia components
+ SkAutoGraphics ag;
+
+ if (FLAGS_list) {
+ SkDebugf("Available Metrics:\n");
+ }
+
+ // Figure which differs the user chose, and optionally print them if the user requests it
+ SkTDArray<SkImageDiffer*> chosenDiffers;
+ for (int differIndex = 0; NULL != gDiffers[differIndex]; differIndex++) {
+ SkImageDiffer* differ = gDiffers[differIndex];
+ if (FLAGS_list) {
+ SkDebugf(" %s", differ->getName());
+ SkDebugf("\n");
+ }
+
+ // Check if this differ was chosen by any of the flags. Initialize them if they were chosen.
+ if (FLAGS_differs.isEmpty()) {
+ // If no differs were chosen, they all get added
+ if (differ->requiresOpenCL()) {
+#if SK_SUPPORT_OPENCL
+ init_cl_diff(differ);
+ chosenDiffers.push(differ);
+#endif
+ } else {
+ chosenDiffers.push(differ);
+ }
+ } else {
+ for (int flagIndex = 0; flagIndex < FLAGS_differs.count(); flagIndex++) {
+ if (SkString(FLAGS_differs[flagIndex]).equals(differ->getName())) {
+ // Initialize OpenCL for the differ if it needs it and support was compiled in.
+ if (differ->requiresOpenCL()) {
+#if SK_SUPPORT_OPENCL
+ init_cl_diff(differ);
+ chosenDiffers.push(differ);
+#endif
+ } else {
+ chosenDiffers.push(differ);
+ }
+ break;
+ }
+ }
+ }
+ }
+
+ // Don't attempt to initialize the differ if we aren't going to use it
+ if (FLAGS_folders.isEmpty() && FLAGS_patterns.isEmpty()) {
+ return 0;
+ }
+
+ // Validate command line flags
+ if (!FLAGS_folders.isEmpty()) {
+ if (2 != FLAGS_folders.count()) {
+ SkDebugf("Folders flag expects two arguments: <baseline folder> <test folder>\n");
+ return 1;
+ }
+ }
+
+ if (!FLAGS_patterns.isEmpty()) {
+ if (2 != FLAGS_patterns.count()) {
+ SkDebugf("Patterns flag expects two arguments: <baseline pattern> <test pattern>\n");
+ return 1;
+ }
+ }
+
+ SkDiffContext ctx;
+ ctx.setDiffers(chosenDiffers);
+
+ // Perform a folder diff if one is requested
+ if (!FLAGS_folders.isEmpty()) {
+ ctx.diffDirectories(FLAGS_folders[0], FLAGS_folders[1]);
+ }
+
+ // Perform a pattern diff if one is requested
+ if (!FLAGS_patterns.isEmpty()) {
+ ctx.diffPatterns(FLAGS_patterns[0], FLAGS_patterns[1]);
+ }
+
+ // Output to the file specified
+ if (!FLAGS_output.isEmpty()) {
+ SkFILEWStream outputStream(FLAGS_output[0]);
+ ctx.outputRecords(outputStream, FLAGS_jsonp);
+ }
+
+ return 0;
+}