gm/gm_expectations.cpp - platform/external/skia - Gitiles

 /*
  * 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 "gm_expectations.h"
 #include "SkBitmapHasher.h"
 #include "SkImageDecoder.h"

 #define DEBUGFAIL_SEE_STDERR SkDEBUGFAIL("see stderr for message")

 // See gm_json.py for descriptions of each of these JSON keys.
 // These constants must be kept in sync with the ones in that Python file!
 const static char kJsonKey_ActualResults[]   = "actual-results";
 const static char kJsonKey_ActualResults_Failed[]        = "failed";
 const static char kJsonKey_ActualResults_FailureIgnored[]= "failure-ignored";
 const static char kJsonKey_ActualResults_NoComparison[]  = "no-comparison";
 const static char kJsonKey_ActualResults_Succeeded[]     = "succeeded";
 const static char kJsonKey_ExpectedResults[] = "expected-results";
 const static char kJsonKey_ExpectedResults_AllowedDigests[] = "allowed-digests";
 const static char kJsonKey_ExpectedResults_IgnoreFailure[]  = "ignore-failure";

 // Types of result hashes we support in the JSON file.
 const static char kJsonKey_Hashtype_Bitmap_64bitMD5[]  = "bitmap-64bitMD5";


 namespace skiagm {

     Json::Value CreateJsonTree(Json::Value expectedResults,
                                Json::Value actualResultsFailed,
                                Json::Value actualResultsFailureIgnored,
                                Json::Value actualResultsNoComparison,
                                Json::Value actualResultsSucceeded) {
         Json::Value actualResults;
         actualResults[kJsonKey_ActualResults_Failed] = actualResultsFailed;
         actualResults[kJsonKey_ActualResults_FailureIgnored] = actualResultsFailureIgnored;
         actualResults[kJsonKey_ActualResults_NoComparison] = actualResultsNoComparison;
         actualResults[kJsonKey_ActualResults_Succeeded] = actualResultsSucceeded;
         Json::Value root;
         root[kJsonKey_ActualResults] = actualResults;
         root[kJsonKey_ExpectedResults] = expectedResults;
         return root;
     }


     // GmResultDigest class...

     GmResultDigest::GmResultDigest(const SkBitmap &bitmap) {
         fIsValid = SkBitmapHasher::ComputeDigest(bitmap, &fHashDigest);
     }

     GmResultDigest::GmResultDigest(const Json::Value &jsonTypeValuePair) {
         fIsValid = false;
         if (!jsonTypeValuePair.isArray()) {
             SkDebugf("found non-array json value when parsing GmResultDigest: %s\n",
                      jsonTypeValuePair.toStyledString().c_str());
             DEBUGFAIL_SEE_STDERR;
         } else if (2 != jsonTypeValuePair.size()) {
             SkDebugf("found json array with wrong size when parsing GmResultDigest: %s\n",
                      jsonTypeValuePair.toStyledString().c_str());
             DEBUGFAIL_SEE_STDERR;
         } else {
             // TODO(epoger): The current implementation assumes that the
             // result digest is always of type kJsonKey_Hashtype_Bitmap_64bitMD5
             Json::Value jsonHashValue = jsonTypeValuePair[1];
             if (!jsonHashValue.isIntegral()) {
                 SkDebugf("found non-integer jsonHashValue when parsing GmResultDigest: %s\n",
                          jsonTypeValuePair.toStyledString().c_str());
                 DEBUGFAIL_SEE_STDERR;
             } else {
                 fHashDigest = jsonHashValue.asUInt64();
                 fIsValid = true;
             }
         }
     }

     bool GmResultDigest::isValid() const {
         return fIsValid;
     }

     bool GmResultDigest::equals(const GmResultDigest &other) const {
         // TODO(epoger): The current implementation assumes that this
         // and other are always of type kJsonKey_Hashtype_Bitmap_64bitMD5
         return (this->fIsValid && other.fIsValid && (this->fHashDigest == other.fHashDigest));
     }

     Json::Value GmResultDigest::asJsonTypeValuePair() const {
         // TODO(epoger): The current implementation assumes that the
         // result digest is always of type kJsonKey_Hashtype_Bitmap_64bitMD5
         Json::Value jsonTypeValuePair;
         if (fIsValid) {
             jsonTypeValuePair.append(Json::Value(kJsonKey_Hashtype_Bitmap_64bitMD5));
             jsonTypeValuePair.append(Json::UInt64(fHashDigest));
         } else {
             jsonTypeValuePair.append(Json::Value("INVALID"));
         }
         return jsonTypeValuePair;
     }

     SkString GmResultDigest::getHashType() const {
         // TODO(epoger): The current implementation assumes that the
         // result digest is always of type kJsonKey_Hashtype_Bitmap_64bitMD5
         return SkString(kJsonKey_Hashtype_Bitmap_64bitMD5);
     }

     SkString GmResultDigest::getDigestValue() const {
         // TODO(epoger): The current implementation assumes that the
         // result digest is always of type kJsonKey_Hashtype_Bitmap_64bitMD5
         SkString retval;
         retval.appendU64(fHashDigest);
         return retval;
     }


     // Expectations class...

     Expectations::Expectations(bool ignoreFailure) {
         fIgnoreFailure = ignoreFailure;
     }

     Expectations::Expectations(const SkBitmap& bitmap, bool ignoreFailure) {
         fBitmap = bitmap;
         fIgnoreFailure = ignoreFailure;
         fAllowedResultDigests.push_back(GmResultDigest(bitmap));
     }

     Expectations::Expectations(const BitmapAndDigest& bitmapAndDigest) {
         fBitmap = bitmapAndDigest.fBitmap;
         fIgnoreFailure = false;
         fAllowedResultDigests.push_back(bitmapAndDigest.fDigest);
     }

     Expectations::Expectations(Json::Value jsonElement) {
         if (jsonElement.empty()) {
             fIgnoreFailure = kDefaultIgnoreFailure;
         } else {
             Json::Value ignoreFailure = jsonElement[kJsonKey_ExpectedResults_IgnoreFailure];
             if (ignoreFailure.isNull()) {
                 fIgnoreFailure = kDefaultIgnoreFailure;
             } else if (!ignoreFailure.isBool()) {
                 SkDebugf("found non-boolean json value for key '%s' in element '%s'\n",
                          kJsonKey_ExpectedResults_IgnoreFailure,
                          jsonElement.toStyledString().c_str());
                 DEBUGFAIL_SEE_STDERR;
                 fIgnoreFailure = kDefaultIgnoreFailure;
             } else {
                 fIgnoreFailure = ignoreFailure.asBool();
             }

             Json::Value allowedDigests = jsonElement[kJsonKey_ExpectedResults_AllowedDigests];
             if (allowedDigests.isNull()) {
                 // ok, we'll just assume there aren't any AllowedDigests to compare against
             } else if (!allowedDigests.isArray()) {
                 SkDebugf("found non-array json value for key '%s' in element '%s'\n",
                          kJsonKey_ExpectedResults_AllowedDigests,
                          jsonElement.toStyledString().c_str());
                 DEBUGFAIL_SEE_STDERR;
             } else {
                 for (Json::ArrayIndex i=0; i<allowedDigests.size(); i++) {
                     fAllowedResultDigests.push_back(GmResultDigest(allowedDigests[i]));
                 }
             }
         }
     }

     bool Expectations::match(GmResultDigest actualGmResultDigest) const {
         for (int i=0; i < this->fAllowedResultDigests.count(); i++) {
             GmResultDigest allowedResultDigest = this->fAllowedResultDigests[i];
             if (allowedResultDigest.equals(actualGmResultDigest)) {
                 return true;
             }
         }
         return false;
     }

     Json::Value Expectations::asJsonValue() const {
         Json::Value allowedDigestArray;
         if (!this->fAllowedResultDigests.empty()) {
             for (int i=0; i < this->fAllowedResultDigests.count(); i++) {
                 allowedDigestArray.append(this->fAllowedResultDigests[i].asJsonTypeValuePair());
             }
         }

         Json::Value jsonExpectations;
         jsonExpectations[kJsonKey_ExpectedResults_AllowedDigests] = allowedDigestArray;
         jsonExpectations[kJsonKey_ExpectedResults_IgnoreFailure]  = this->ignoreFailure();
         return jsonExpectations;
     }


     // IndividualImageExpectationsSource class...

     Expectations IndividualImageExpectationsSource::get(const char *testName) const {
         SkString path = SkOSPath::SkPathJoin(fRootDir.c_str(), testName);
         SkBitmap referenceBitmap;
         bool decodedReferenceBitmap =
             SkImageDecoder::DecodeFile(path.c_str(), &referenceBitmap,
                                        SkBitmap::kARGB_8888_Config,
                                        SkImageDecoder::kDecodePixels_Mode,
                                        NULL);
         if (decodedReferenceBitmap) {
             return Expectations(referenceBitmap);
         } else {
             return Expectations();
         }
     }


     // JsonExpectationsSource class...

     JsonExpectationsSource::JsonExpectationsSource(const char *jsonPath) {
         Parse(jsonPath, &fJsonRoot);
         fJsonExpectedResults = fJsonRoot[kJsonKey_ExpectedResults];
     }

     Expectations JsonExpectationsSource::get(const char *testName) const {
         return Expectations(fJsonExpectedResults[testName]);
     }

     /*static*/ SkData* JsonExpectationsSource::ReadIntoSkData(SkStream &stream, size_t maxBytes) {
         if (0 == maxBytes) {
             return SkData::NewEmpty();
         }
         char* bufStart = reinterpret_cast<char *>(sk_malloc_throw(maxBytes));
         char* bufPtr = bufStart;
         size_t bytesRemaining = maxBytes;
         while (bytesRemaining > 0) {
             size_t bytesReadThisTime = stream.read(bufPtr, bytesRemaining);
             if (0 == bytesReadThisTime) {
                 break;
             }
             bytesRemaining -= bytesReadThisTime;
             bufPtr += bytesReadThisTime;
         }
         return SkData::NewFromMalloc(bufStart, maxBytes - bytesRemaining);
     }

     /*static*/ bool JsonExpectationsSource::Parse(const char *jsonPath, Json::Value *jsonRoot) {
         SkFILEStream inFile(jsonPath);
         if (!inFile.isValid()) {
             SkDebugf("unable to read JSON file %s\n", jsonPath);
             DEBUGFAIL_SEE_STDERR;
             return false;
         }

         SkAutoDataUnref dataRef(ReadFileIntoSkData(inFile));
         if (NULL == dataRef.get()) {
             SkDebugf("error reading JSON file %s\n", jsonPath);
             DEBUGFAIL_SEE_STDERR;
             return false;
         }

         const char *bytes = reinterpret_cast<const char *>(dataRef.get()->data());
         size_t size = dataRef.get()->size();
         Json::Reader reader;
         if (!reader.parse(bytes, bytes+size, *jsonRoot)) {
             SkDebugf("error parsing JSON file %s\n", jsonPath);
             DEBUGFAIL_SEE_STDERR;
             return false;
         }
         return true;
     }

 }
	/*
	* 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 "gm_expectations.h"
	#include "SkBitmapHasher.h"
	#include "SkImageDecoder.h"

	#define DEBUGFAIL_SEE_STDERR SkDEBUGFAIL("see stderr for message")

	// See gm_json.py for descriptions of each of these JSON keys.
	// These constants must be kept in sync with the ones in that Python file!
	const static char kJsonKey_ActualResults[] = "actual-results";
	const static char kJsonKey_ActualResults_Failed[] = "failed";
	const static char kJsonKey_ActualResults_FailureIgnored[]= "failure-ignored";
	const static char kJsonKey_ActualResults_NoComparison[] = "no-comparison";
	const static char kJsonKey_ActualResults_Succeeded[] = "succeeded";
	const static char kJsonKey_ExpectedResults[] = "expected-results";
	const static char kJsonKey_ExpectedResults_AllowedDigests[] = "allowed-digests";
	const static char kJsonKey_ExpectedResults_IgnoreFailure[] = "ignore-failure";

	// Types of result hashes we support in the JSON file.
	const static char kJsonKey_Hashtype_Bitmap_64bitMD5[] = "bitmap-64bitMD5";


	namespace skiagm {

	Json::Value CreateJsonTree(Json::Value expectedResults,
	Json::Value actualResultsFailed,
	Json::Value actualResultsFailureIgnored,
	Json::Value actualResultsNoComparison,
	Json::Value actualResultsSucceeded) {
	Json::Value actualResults;
	actualResults[kJsonKey_ActualResults_Failed] = actualResultsFailed;
	actualResults[kJsonKey_ActualResults_FailureIgnored] = actualResultsFailureIgnored;
	actualResults[kJsonKey_ActualResults_NoComparison] = actualResultsNoComparison;
	actualResults[kJsonKey_ActualResults_Succeeded] = actualResultsSucceeded;
	Json::Value root;
	root[kJsonKey_ActualResults] = actualResults;
	root[kJsonKey_ExpectedResults] = expectedResults;
	return root;
	}


	// GmResultDigest class...

	GmResultDigest::GmResultDigest(const SkBitmap &bitmap) {
	fIsValid = SkBitmapHasher::ComputeDigest(bitmap, &fHashDigest);
	}

	GmResultDigest::GmResultDigest(const Json::Value &jsonTypeValuePair) {
	fIsValid = false;
	if (!jsonTypeValuePair.isArray()) {
	SkDebugf("found non-array json value when parsing GmResultDigest: %s\n",
	jsonTypeValuePair.toStyledString().c_str());
	DEBUGFAIL_SEE_STDERR;
	} else if (2 != jsonTypeValuePair.size()) {
	SkDebugf("found json array with wrong size when parsing GmResultDigest: %s\n",
	jsonTypeValuePair.toStyledString().c_str());
	DEBUGFAIL_SEE_STDERR;
	} else {
	// TODO(epoger): The current implementation assumes that the
	// result digest is always of type kJsonKey_Hashtype_Bitmap_64bitMD5
	Json::Value jsonHashValue = jsonTypeValuePair[1];
	if (!jsonHashValue.isIntegral()) {
	SkDebugf("found non-integer jsonHashValue when parsing GmResultDigest: %s\n",
	jsonTypeValuePair.toStyledString().c_str());
	DEBUGFAIL_SEE_STDERR;
	} else {
	fHashDigest = jsonHashValue.asUInt64();
	fIsValid = true;
	}
	}
	}

	bool GmResultDigest::isValid() const {
	return fIsValid;
	}

	bool GmResultDigest::equals(const GmResultDigest &other) const {
	// TODO(epoger): The current implementation assumes that this
	// and other are always of type kJsonKey_Hashtype_Bitmap_64bitMD5
	return (this->fIsValid && other.fIsValid && (this->fHashDigest == other.fHashDigest));
	}

	Json::Value GmResultDigest::asJsonTypeValuePair() const {
	// TODO(epoger): The current implementation assumes that the
	// result digest is always of type kJsonKey_Hashtype_Bitmap_64bitMD5
	Json::Value jsonTypeValuePair;
	if (fIsValid) {
	jsonTypeValuePair.append(Json::Value(kJsonKey_Hashtype_Bitmap_64bitMD5));
	jsonTypeValuePair.append(Json::UInt64(fHashDigest));
	} else {
	jsonTypeValuePair.append(Json::Value("INVALID"));
	}
	return jsonTypeValuePair;
	}

	SkString GmResultDigest::getHashType() const {
	// TODO(epoger): The current implementation assumes that the
	// result digest is always of type kJsonKey_Hashtype_Bitmap_64bitMD5
	return SkString(kJsonKey_Hashtype_Bitmap_64bitMD5);
	}

	SkString GmResultDigest::getDigestValue() const {
	// TODO(epoger): The current implementation assumes that the
	// result digest is always of type kJsonKey_Hashtype_Bitmap_64bitMD5
	SkString retval;
	retval.appendU64(fHashDigest);
	return retval;
	}


	// Expectations class...

	Expectations::Expectations(bool ignoreFailure) {
	fIgnoreFailure = ignoreFailure;
	}

	Expectations::Expectations(const SkBitmap& bitmap, bool ignoreFailure) {
	fBitmap = bitmap;
	fIgnoreFailure = ignoreFailure;
	fAllowedResultDigests.push_back(GmResultDigest(bitmap));
	}

	Expectations::Expectations(const BitmapAndDigest& bitmapAndDigest) {
	fBitmap = bitmapAndDigest.fBitmap;
	fIgnoreFailure = false;
	fAllowedResultDigests.push_back(bitmapAndDigest.fDigest);
	}

	Expectations::Expectations(Json::Value jsonElement) {
	if (jsonElement.empty()) {
	fIgnoreFailure = kDefaultIgnoreFailure;
	} else {
	Json::Value ignoreFailure = jsonElement[kJsonKey_ExpectedResults_IgnoreFailure];
	if (ignoreFailure.isNull()) {
	fIgnoreFailure = kDefaultIgnoreFailure;
	} else if (!ignoreFailure.isBool()) {
	SkDebugf("found non-boolean json value for key '%s' in element '%s'\n",
	kJsonKey_ExpectedResults_IgnoreFailure,
	jsonElement.toStyledString().c_str());
	DEBUGFAIL_SEE_STDERR;
	fIgnoreFailure = kDefaultIgnoreFailure;
	} else {
	fIgnoreFailure = ignoreFailure.asBool();
	}

	Json::Value allowedDigests = jsonElement[kJsonKey_ExpectedResults_AllowedDigests];
	if (allowedDigests.isNull()) {
	// ok, we'll just assume there aren't any AllowedDigests to compare against
	} else if (!allowedDigests.isArray()) {
	SkDebugf("found non-array json value for key '%s' in element '%s'\n",
	kJsonKey_ExpectedResults_AllowedDigests,
	jsonElement.toStyledString().c_str());
	DEBUGFAIL_SEE_STDERR;
	} else {
	for (Json::ArrayIndex i=0; i<allowedDigests.size(); i++) {
	fAllowedResultDigests.push_back(GmResultDigest(allowedDigests[i]));
	}
	}
	}
	}

	bool Expectations::match(GmResultDigest actualGmResultDigest) const {
	for (int i=0; i < this->fAllowedResultDigests.count(); i++) {
	GmResultDigest allowedResultDigest = this->fAllowedResultDigests[i];
	if (allowedResultDigest.equals(actualGmResultDigest)) {
	return true;
	}
	}
	return false;
	}

	Json::Value Expectations::asJsonValue() const {
	Json::Value allowedDigestArray;
	if (!this->fAllowedResultDigests.empty()) {
	for (int i=0; i < this->fAllowedResultDigests.count(); i++) {
	allowedDigestArray.append(this->fAllowedResultDigests[i].asJsonTypeValuePair());
	}
	}

	Json::Value jsonExpectations;
	jsonExpectations[kJsonKey_ExpectedResults_AllowedDigests] = allowedDigestArray;
	jsonExpectations[kJsonKey_ExpectedResults_IgnoreFailure] = this->ignoreFailure();
	return jsonExpectations;
	}


	// IndividualImageExpectationsSource class...

	Expectations IndividualImageExpectationsSource::get(const char *testName) const {
	SkString path = SkOSPath::SkPathJoin(fRootDir.c_str(), testName);
	SkBitmap referenceBitmap;
	bool decodedReferenceBitmap =
	SkImageDecoder::DecodeFile(path.c_str(), &referenceBitmap,
	SkBitmap::kARGB_8888_Config,
	SkImageDecoder::kDecodePixels_Mode,
	NULL);
	if (decodedReferenceBitmap) {
	return Expectations(referenceBitmap);
	} else {
	return Expectations();
	}
	}


	// JsonExpectationsSource class...

	JsonExpectationsSource::JsonExpectationsSource(const char *jsonPath) {
	Parse(jsonPath, &fJsonRoot);
	fJsonExpectedResults = fJsonRoot[kJsonKey_ExpectedResults];
	}

	Expectations JsonExpectationsSource::get(const char *testName) const {
	return Expectations(fJsonExpectedResults[testName]);
	}

	/static/ SkData* JsonExpectationsSource::ReadIntoSkData(SkStream &stream, size_t maxBytes) {
	if (0 == maxBytes) {
	return SkData::NewEmpty();
	}
	char* bufStart = reinterpret_cast<char *>(sk_malloc_throw(maxBytes));
	char* bufPtr = bufStart;
	size_t bytesRemaining = maxBytes;
	while (bytesRemaining > 0) {
	size_t bytesReadThisTime = stream.read(bufPtr, bytesRemaining);
	if (0 == bytesReadThisTime) {
	break;
	}
	bytesRemaining -= bytesReadThisTime;
	bufPtr += bytesReadThisTime;
	}
	return SkData::NewFromMalloc(bufStart, maxBytes - bytesRemaining);
	}

	/static/ bool JsonExpectationsSource::Parse(const char jsonPath, Json::Value jsonRoot) {
	SkFILEStream inFile(jsonPath);
	if (!inFile.isValid()) {
	SkDebugf("unable to read JSON file %s\n", jsonPath);
	DEBUGFAIL_SEE_STDERR;
	return false;
	}

	SkAutoDataUnref dataRef(ReadFileIntoSkData(inFile));
	if (NULL == dataRef.get()) {
	SkDebugf("error reading JSON file %s\n", jsonPath);
	DEBUGFAIL_SEE_STDERR;
	return false;
	}

	const char bytes = reinterpret_cast<const char >(dataRef.get()->data());
	size_t size = dataRef.get()->size();
	Json::Reader reader;
	if (!reader.parse(bytes, bytes+size, *jsonRoot)) {
	SkDebugf("error parsing JSON file %s\n", jsonPath);
	DEBUGFAIL_SEE_STDERR;
	return false;
	}
	return true;
	}

	}