| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| #ifndef gm_expectations_DEFINED |
| #define gm_expectations_DEFINED |
| |
| #include "gm.h" |
| #include "SkBitmap.h" |
| #include "SkBitmapHasher.h" |
| #include "SkData.h" |
| #include "SkOSFile.h" |
| #include "SkRefCnt.h" |
| #include "SkStream.h" |
| #include "SkTArray.h" |
| |
| #ifdef SK_BUILD_FOR_WIN |
| // json includes xlocale which generates warning 4530 because we're compiling without |
| // exceptions; see https://code.google.com/p/skia/issues/detail?id=1067 |
| #pragma warning(push) |
| #pragma warning(disable : 4530) |
| #endif |
| #include "json/reader.h" |
| #include "json/value.h" |
| #ifdef SK_BUILD_FOR_WIN |
| #pragma warning(pop) |
| #endif |
| |
| namespace skiagm { |
| |
| void gm_fprintf(FILE *stream, const char format[], ...); |
| |
| Json::Value CreateJsonTree(Json::Value expectedResults, |
| Json::Value actualResultsFailed, |
| Json::Value actualResultsFailureIgnored, |
| Json::Value actualResultsNoComparison, |
| Json::Value actualResultsSucceeded); |
| |
| /** |
| * The digest of a GM test result. |
| * |
| * Currently, this is always a uint64_t hash digest of an SkBitmap... |
| * but we will add other flavors soon. |
| */ |
| class GmResultDigest { |
| public: |
| /** |
| * Create a ResultDigest representing an actual image result. |
| */ |
| GmResultDigest(const SkBitmap &bitmap); |
| |
| /** |
| * Create a ResultDigest representing an allowed result |
| * checksum within JSON expectations file, in the form |
| * ["bitmap-64bitMD5", 12345]. |
| */ |
| GmResultDigest(const Json::Value &jsonTypeValuePair); |
| |
| /** |
| * Returns true if this GmResultDigest was fully and successfully |
| * created. |
| */ |
| bool isValid() const; |
| |
| /** |
| * Returns true if this and other GmResultDigest could |
| * represent identical results. |
| */ |
| bool equals(const GmResultDigest &other) const; |
| |
| /** |
| * Returns a JSON type/value pair representing this result, |
| * such as ["bitmap-64bitMD5", 12345]. |
| */ |
| Json::Value asJsonTypeValuePair() const; |
| |
| /** |
| * Returns the hashtype, such as "bitmap-64bitMD5", as an SkString. |
| */ |
| SkString getHashType() const; |
| |
| /** |
| * Returns the hash digest value, such as "12345", as an SkString. |
| */ |
| SkString getDigestValue() const; |
| |
| private: |
| bool fIsValid; // always check this first--if it's false, other fields are meaningless |
| uint64_t fHashDigest; |
| }; |
| |
| /** |
| * Encapsulates an SkBitmap and its GmResultDigest, guaranteed to keep them in sync. |
| */ |
| class BitmapAndDigest { |
| public: |
| BitmapAndDigest(const SkBitmap &bitmap) : fBitmap(bitmap), fDigest(bitmap) {} |
| |
| const SkBitmap fBitmap; |
| const GmResultDigest fDigest; |
| }; |
| |
| /** |
| * Test expectations (allowed image results, etc.) |
| */ |
| class Expectations { |
| public: |
| /** |
| * No expectations at all. |
| */ |
| Expectations(bool ignoreFailure=kDefaultIgnoreFailure); |
| |
| /** |
| * Expect exactly one image (appropriate for the case when we |
| * are comparing against a single PNG file). |
| */ |
| Expectations(const SkBitmap& bitmap, bool ignoreFailure=kDefaultIgnoreFailure); |
| |
| /** |
| * Create Expectations from a JSON element as found within the |
| * kJsonKey_ExpectedResults section. |
| * |
| * It's fine if the jsonElement is null or empty; in that case, we just |
| * don't have any expectations. |
| */ |
| Expectations(Json::Value jsonElement); |
| |
| /** |
| * Returns true iff we want to ignore failed expectations. |
| */ |
| bool ignoreFailure() const { return this->fIgnoreFailure; } |
| |
| /** |
| * Returns true iff there are no allowed results. |
| */ |
| bool empty() const { return this->fAllowedResultDigests.empty(); } |
| |
| /** |
| * Returns true iff resultDigest matches any allowed result, |
| * regardless of fIgnoreFailure. (The caller can check |
| * that separately.) |
| */ |
| bool match(GmResultDigest resultDigest) const; |
| |
| /** |
| * If this Expectation is based on a single SkBitmap, return a |
| * pointer to that SkBitmap. Otherwise (if the Expectation is |
| * empty, or if it was based on a list of checksums rather |
| * than a single bitmap), returns NULL. |
| */ |
| const SkBitmap *asBitmap() const { |
| return (SkBitmap::kNo_Config == fBitmap.config()) ? NULL : &fBitmap; |
| } |
| |
| /** |
| * Return a JSON representation of the expectations. |
| */ |
| Json::Value asJsonValue() const; |
| |
| private: |
| const static bool kDefaultIgnoreFailure = false; |
| |
| SkTArray<GmResultDigest> fAllowedResultDigests; |
| bool fIgnoreFailure; |
| SkBitmap fBitmap; |
| }; |
| |
| /** |
| * Abstract source of Expectations objects for individual tests. |
| */ |
| class ExpectationsSource : public SkRefCnt { |
| public: |
| SK_DECLARE_INST_COUNT(ExpectationsSource) |
| |
| virtual Expectations get(const char *testName) = 0; |
| |
| private: |
| typedef SkRefCnt INHERITED; |
| }; |
| |
| /** |
| * Return Expectations based on individual image files on disk. |
| */ |
| class IndividualImageExpectationsSource : public ExpectationsSource { |
| public: |
| /** |
| * Create an ExpectationsSource that will return Expectations based on |
| * image files found within rootDir. |
| * |
| * rootDir: directory under which to look for image files |
| * (this string will be copied to storage within this object) |
| */ |
| IndividualImageExpectationsSource(const char *rootDir) : fRootDir(rootDir) {} |
| |
| Expectations get(const char *testName) SK_OVERRIDE ; |
| |
| private: |
| const SkString fRootDir; |
| }; |
| |
| /** |
| * Return Expectations based on JSON summary file. |
| */ |
| class JsonExpectationsSource : public ExpectationsSource { |
| public: |
| /** |
| * Create an ExpectationsSource that will return Expectations based on |
| * a JSON file. |
| * |
| * jsonPath: path to JSON file to read |
| */ |
| JsonExpectationsSource(const char *jsonPath); |
| |
| Expectations get(const char *testName) SK_OVERRIDE; |
| |
| private: |
| |
| /** |
| * Read as many bytes as possible (up to maxBytes) from the stream into |
| * an SkData object. |
| * |
| * If the returned SkData contains fewer than maxBytes, then EOF has been |
| * reached and no more data would be available from subsequent calls. |
| * (If EOF has already been reached, then this call will return an empty |
| * SkData object immediately.) |
| * |
| * If there are fewer than maxBytes bytes available to read from the |
| * stream, but the stream has not been closed yet, this call will block |
| * until there are enough bytes to read or the stream has been closed. |
| * |
| * It is up to the caller to call unref() on the returned SkData object |
| * once the data is no longer needed, so that the underlying buffer will |
| * be freed. For example: |
| * |
| * { |
| * size_t maxBytes = 256; |
| * SkAutoDataUnref dataRef(readIntoSkData(stream, maxBytes)); |
| * if (NULL != dataRef.get()) { |
| * size_t bytesActuallyRead = dataRef.get()->size(); |
| * // use the data... |
| * } |
| * } |
| * // underlying buffer has been freed, thanks to auto unref |
| * |
| */ |
| // TODO(epoger): Move this, into SkStream.[cpp|h] as attempted in |
| // https://codereview.appspot.com/7300071 ? |
| // And maybe ReadFileIntoSkData() also? |
| static SkData* ReadIntoSkData(SkStream &stream, size_t maxBytes); |
| |
| /** |
| * Wrapper around ReadIntoSkData for files: reads the entire file into |
| * an SkData object. |
| */ |
| static SkData* ReadFileIntoSkData(SkFILEStream &stream) { |
| return ReadIntoSkData(stream, stream.getLength()); |
| } |
| |
| /** |
| * Read the file contents from jsonPath and parse them into jsonRoot. |
| * |
| * Returns true if successful. |
| */ |
| static bool Parse(const char *jsonPath, Json::Value *jsonRoot); |
| |
| Json::Value fJsonRoot; |
| Json::Value fJsonExpectedResults; |
| }; |
| |
| } |
| #endif |
