migrate skpdiff to tools

experimental/skpdiff/main.cpp

Index: experimental/skpdiff/main.cpp
diff --git a/experimental/skpdiff/main.cpp b/experimental/skpdiff/main.cpp
deleted file mode 100644
index d258c147c62015e1f41968e41eb449dc71f6cce2..0000000000000000000000000000000000000000
--- a/experimental/skpdiff/main.cpp
+++ /dev/null
@@ -1,192 +0,0 @@
-/*
- * 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;
-}