migrate skpdiff to tools

experimental/skpdiff/SkDiffContext.cpp

-/*
- * Copyright 2013 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "SkBitmap.h"
-#include "SkImageDecoder.h"
-#include "SkOSFile.h"
-#include "SkStream.h"
-
-#include "SkDiffContext.h"
-#include "SkImageDiffer.h"
-#include "skpdiff_util.h"
-
-SkDiffContext::SkDiffContext() {
-    fRecords = NULL;
-    fDiffers = NULL;
-    fDifferCount = 0;
-}
-
-SkDiffContext::~SkDiffContext() {
-    // Delete the record linked list
-    DiffRecord* currentRecord = fRecords;
-    while (NULL != currentRecord) {
-        DiffRecord* nextRecord = currentRecord->fNext;
-        SkDELETE(currentRecord);
-        currentRecord = nextRecord;
-    }
-
-    if (NULL != fDiffers) {
-        SkDELETE_ARRAY(fDiffers);
-    }
-}
-
-void SkDiffContext::setDiffers(const SkTDArray<SkImageDiffer*>& differs) {
-    // Delete whatever the last array of differs was
-    if (NULL != fDiffers) {
-        SkDELETE_ARRAY(fDiffers);
-        fDiffers = NULL;
-        fDifferCount = 0;
-    }
-
-    // Copy over the new differs
-    fDifferCount = differs.count();
-    fDiffers = SkNEW_ARRAY(SkImageDiffer*, fDifferCount);
-    differs.copy(fDiffers);
-}
-
-void SkDiffContext::addDiff(const char* baselinePath, const char* testPath) {
-    // Load the images at the paths
-    SkBitmap baselineBitmap;
-    SkBitmap testBitmap;
-    if (!SkImageDecoder::DecodeFile(baselinePath, &baselineBitmap)) {
-        SkDebugf("Failed to load bitmap \"%s\"\n", baselinePath);
-        return;
-    }
-    if (!SkImageDecoder::DecodeFile(testPath, &testBitmap)) {
-        SkDebugf("Failed to load bitmap \"%s\"\n", testPath);
-        return;
-    }
-
-    // Setup a record for this diff
-    DiffRecord* newRecord = SkNEW(DiffRecord);
-    newRecord->fBaselinePath = baselinePath;
-    newRecord->fTestPath = testPath;
-    newRecord->fNext = fRecords;
-    fRecords = newRecord;
-
-    // Perform each diff
-    for (int differIndex = 0; differIndex < fDifferCount; differIndex++) {
-        SkImageDiffer* differ = fDiffers[differIndex];
-        int diffID = differ->queueDiff(&baselineBitmap, &testBitmap);
-        if (diffID >= 0) {
-
-            // Copy the results into data for this record
-            DiffData& diffData = newRecord->fDiffs.push_back();
-
-            diffData.fDiffName = differ->getName();
-            diffData.fResult = differ->getResult(diffID);
-
-            int poiCount = differ->getPointsOfInterestCount(diffID);
-            SkIPoint* poi = differ->getPointsOfInterest(diffID);
-            diffData.fPointsOfInterest.append(poiCount, poi);
-
-            // Because we are doing everything synchronously for now, we are done with the diff
-            // after reading it.
-            differ->deleteDiff(diffID);
-        }
-    }
-}
-
-
-void SkDiffContext::diffDirectories(const char baselinePath[], const char testPath[]) {
-    // Get the files in the baseline, we will then look for those inside the test path
-    SkTArray<SkString> baselineEntries;
-    if (!get_directory(baselinePath, &baselineEntries)) {
-        SkDebugf("Unable to open path \"%s\"\n", baselinePath);
-        return;
-    }
-
-    for (int baselineIndex = 0; baselineIndex < baselineEntries.count(); baselineIndex++) {
-        SkDebugf("[%i/%i] ", baselineIndex, baselineEntries.count());
-        const char* baseFilename = baselineEntries[baselineIndex].c_str();
-
-        // Find the real location of each file to compare
-        SkString baselineFile = SkOSPath::SkPathJoin(baselinePath, baseFilename);
-        SkString testFile = SkOSPath::SkPathJoin(testPath, baseFilename);
-
-        // Check that the test file exists and is a file
-        if (sk_exists(testFile.c_str()) && !sk_isdir(testFile.c_str())) {
-            // Queue up the comparison with the differ
-            this->addDiff(baselineFile.c_str(), testFile.c_str());
-        } else {
-            SkDebugf("Baseline file \"%s\" has no corresponding test file\n", baselineFile.c_str());
-        }
-    }
-}
-
-
-void SkDiffContext::diffPatterns(const char baselinePattern[], const char testPattern[]) {
-    // Get the files in the baseline and test patterns. Because they are in sorted order, it's easy
-    // to find corresponding images by matching entry indices.
-
-    SkTArray<SkString> baselineEntries;
-    if (!glob_files(baselinePattern, &baselineEntries)) {
-        SkDebugf("Unable to get pattern \"%s\"\n", baselinePattern);
-        return;
-    }
-
-    SkTArray<SkString> testEntries;
-    if (!glob_files(testPattern, &testEntries)) {
-        SkDebugf("Unable to get pattern \"%s\"\n", testPattern);
-        return;
-    }
-
-    if (baselineEntries.count() != testEntries.count()) {
-        SkDebugf("Baseline and test patterns do not yield corresponding number of files\n");
-        return;
-    }
-
-    for (int entryIndex = 0; entryIndex < baselineEntries.count(); entryIndex++) {
-        SkDebugf("[%i/%i] ", entryIndex, baselineEntries.count());
-        const char* baselineFilename = baselineEntries[entryIndex].c_str();
-        const char* testFilename     = testEntries    [entryIndex].c_str();
-
-        this->addDiff(baselineFilename, testFilename);
-    }
-}
-
-void SkDiffContext::outputRecords(SkWStream& stream, bool useJSONP) {
-    DiffRecord* currentRecord = fRecords;
-    if (useJSONP) {
-        stream.writeText("var SkPDiffRecords = {\n");
-    }
-    else
-    {
-        stream.writeText("{\n");
-    }
-    stream.writeText("    \"records\": [\n");
-    while (NULL != currentRecord) {
-        stream.writeText("        {\n");
-
-            stream.writeText("            \"baselinePath\": \"");
-            stream.writeText(currentRecord->fBaselinePath.c_str());
-            stream.writeText("\",\n");
-
-            stream.writeText("            \"testPath\": \"");
-            stream.writeText(currentRecord->fTestPath.c_str());
-            stream.writeText("\",\n");
-
-            stream.writeText("            \"diffs\": [\n");
-            for (int diffIndex = 0; diffIndex < currentRecord->fDiffs.count(); diffIndex++) {
-                DiffData& data = currentRecord->fDiffs[diffIndex];
-                stream.writeText("                {\n");
-
-                    stream.writeText("                    \"differName\": \"");
-                    stream.writeText(data.fDiffName);
-                    stream.writeText("\",\n");
-
-                    stream.writeText("                    \"result\": ");
-                    stream.writeScalarAsText(data.fResult);
-                    stream.writeText(",\n");
-
-                    stream.writeText("                    \"pointsOfInterest\": [\n");
-                    for (int poiIndex = 0; poiIndex < data.fPointsOfInterest.count(); poiIndex++) {
-                        SkIPoint poi = data.fPointsOfInterest[poiIndex];
-                        stream.writeText("                        [");
-                        stream.writeDecAsText(poi.x());
-                        stream.writeText(",");
-                        stream.writeDecAsText(poi.y());
-                        stream.writeText("]");
-
-                        // JSON does not allow trailing commas
-                        if (poiIndex + 1 < data.fPointsOfInterest.count())
-                        {
-                            stream.writeText(",");
-                        }
-                        stream.writeText("\n");
-                    }
-                    stream.writeText("                    ]\n");
-                stream.writeText("                }");
-
-                // JSON does not allow trailing commas
-                if (diffIndex + 1 < currentRecord->fDiffs.count())
-                {
-                    stream.writeText(",");
-                }
-                stream.writeText("                \n");
-            }
-            stream.writeText("            ]\n");
-
-        stream.writeText("        }");
-
-        // JSON does not allow trailing commas
-        if (NULL != currentRecord->fNext)
-        {
-            stream.writeText(",");
-        }
-        stream.writeText("\n");
-        currentRecord = currentRecord->fNext;
-    }
-    stream.writeText("    ]\n");
-    if (useJSONP) {
-        stream.writeText("};\n");
-    }
-    else
-    {
-        stream.writeText("}\n");
-    }
-}