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moz-skia/tools/skimage_main.cpp

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C++
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/*
* Copyright 2011 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 "SkBitmap.h"
#include "SkColorPriv.h"
#include "SkCommandLineFlags.h"
#include "SkData.h"
#include "SkForceLinking.h"
#include "SkGraphics.h"
#include "SkImageDecoder.h"
#include "SkImageEncoder.h"
#include "SkOSFile.h"
#include "SkRandom.h"
#include "SkStream.h"
#include "SkTArray.h"
#include "SkTemplates.h"
__SK_FORCE_IMAGE_DECODER_LINKING;
DEFINE_string(config, "None", "Preferred config to decode into. [None|8888|565|A8]");
DEFINE_string(createExpectationsPath, "", "Path to write JSON expectations.");
DEFINE_string(mismatchPath, "", "Folder to write mismatched images to.");
DEFINE_string2(readPath, r, "", "Folder(s) and files to decode images. Required.");
DEFINE_string(readExpectationsPath, "", "Path to read JSON expectations from.");
DEFINE_bool(reencode, true, "Reencode the images to test encoding.");
DEFINE_int32(sampleSize, 1, "Set the sampleSize for decoding.");
DEFINE_bool(skip, false, "Skip writing zeroes.");
DEFINE_bool(testSubsetDecoding, true, "Test decoding subsets of images.");
DEFINE_bool(writeChecksumBasedFilenames, false, "When writing out actual images, use checksum-"
"based filenames, as rebaseline.py will use when downloading them from Google Storage");
DEFINE_string2(writePath, w, "", "Write rendered images into this directory.");
struct Format {
SkImageEncoder::Type fType;
SkImageDecoder::Format fFormat;
const char* fSuffix;
};
static const Format gFormats[] = {
{ SkImageEncoder::kBMP_Type, SkImageDecoder::kBMP_Format, ".bmp" },
{ SkImageEncoder::kGIF_Type, SkImageDecoder::kGIF_Format, ".gif" },
{ SkImageEncoder::kICO_Type, SkImageDecoder::kICO_Format, ".ico" },
{ SkImageEncoder::kJPEG_Type, SkImageDecoder::kJPEG_Format, ".jpg" },
{ SkImageEncoder::kPNG_Type, SkImageDecoder::kPNG_Format, ".png" },
{ SkImageEncoder::kWBMP_Type, SkImageDecoder::kWBMP_Format, ".wbmp" },
{ SkImageEncoder::kWEBP_Type, SkImageDecoder::kWEBP_Format, ".webp" }
};
static SkImageEncoder::Type format_to_type(SkImageDecoder::Format format) {
for (size_t i = 0; i < SK_ARRAY_COUNT(gFormats); i++) {
if (gFormats[i].fFormat == format) {
return gFormats[i].fType;
}
}
return SkImageEncoder::kUnknown_Type;
}
static const char* suffix_for_type(SkImageEncoder::Type type) {
for (size_t i = 0; i < SK_ARRAY_COUNT(gFormats); i++) {
if (gFormats[i].fType == type) {
return gFormats[i].fSuffix;
}
}
return "";
}
static SkImageDecoder::Format guess_format_from_suffix(const char suffix[]) {
for (size_t i = 0; i < SK_ARRAY_COUNT(gFormats); i++) {
if (strcmp(suffix, gFormats[i].fSuffix) == 0) {
return gFormats[i].fFormat;
}
}
return SkImageDecoder::kUnknown_Format;
}
static void make_outname(SkString* dst, const char outDir[], const char src[],
const char suffix[]) {
SkString basename = SkOSPath::SkBasename(src);
dst->set(SkOSPath::SkPathJoin(outDir, basename.c_str()));
dst->append(suffix);
}
// Store the names of the filenames to report later which ones failed, succeeded, and were
// invalid.
// FIXME: Add more arrays, for more specific types of errors, and make the output simpler.
// If each array holds one type of error, the output can change from:
//
// Failures:
// <image> failed for such and such reason
// <image> failed for some different reason
//
// to:
//
// Such and such failures:
// <image>
//
// Different reason failures:
// <image>
//
static SkTArray<SkString, false> gInvalidStreams;
static SkTArray<SkString, false> gMissingCodecs;
static SkTArray<SkString, false> gDecodeFailures;
static SkTArray<SkString, false> gEncodeFailures;
static SkTArray<SkString, false> gSuccessfulDecodes;
static SkTArray<SkString, false> gSuccessfulSubsetDecodes;
static SkTArray<SkString, false> gFailedSubsetDecodes;
// Files/subsets that do not have expectations. Not reported as a failure of the test so
// the bots will not turn red with each new image test.
static SkTArray<SkString, false> gMissingExpectations;
static SkTArray<SkString, false> gMissingSubsetExpectations;
// For files that are expected to fail.
static SkTArray<SkString, false> gKnownFailures;
static SkTArray<SkString, false> gKnownSubsetFailures;
static SkBitmap::Config gPrefConfig(SkBitmap::kNo_Config);
// Expections read from a file specified by readExpectationsPath. The expectations must have been
// previously written using createExpectationsPath.
SkAutoTUnref<skiagm::JsonExpectationsSource> gJsonExpectations;
/**
* Encode the bitmap to a file, written one of two ways, depending on
* FLAGS_writeChecksumBasedFilenames. If true, the final image will be
* written to:
* outDir/hashType/src/digestValue.png
* If false, the final image will be written out to:
* outDir/src.png
* The function returns whether the file was successfully written.
*/
static bool write_bitmap(const char outDir[], const char src[],
const skiagm::BitmapAndDigest& bitmapAndDigest) {
SkString filename;
if (FLAGS_writeChecksumBasedFilenames) {
// First create the directory for the hashtype.
const SkString hashType = bitmapAndDigest.fDigest.getHashType();
const SkString hashDir = SkOSPath::SkPathJoin(outDir, hashType.c_str());
if (!sk_mkdir(hashDir.c_str())) {
return false;
}
// Now create the name of the folder specific to this image.
SkString basename = SkOSPath::SkBasename(src);
const SkString imageDir = SkOSPath::SkPathJoin(hashDir.c_str(), basename.c_str());
if (!sk_mkdir(imageDir.c_str())) {
return false;
}
// Name the file <digest>.png
SkString checksumBasedName = bitmapAndDigest.fDigest.getDigestValue();
checksumBasedName.append(".png");
filename = SkOSPath::SkPathJoin(imageDir.c_str(), checksumBasedName.c_str());
} else {
make_outname(&filename, outDir, src, ".png");
}
const SkBitmap& bm = bitmapAndDigest.fBitmap;
if (SkImageEncoder::EncodeFile(filename.c_str(), bm, SkImageEncoder::kPNG_Type, 100)) {
return true;
}
if (bm.colorType() == kPMColor_SkColorType) {
// First attempt at encoding failed, and the bitmap was already 8888. Making
// a copy is not going to help.
return false;
}
// Encoding failed. Copy to 8888 and try again.
SkBitmap bm8888;
if (!bm.copyTo(&bm8888, kPMColor_SkColorType)) {
return false;
}
return SkImageEncoder::EncodeFile(filename.c_str(), bm8888, SkImageEncoder::kPNG_Type, 100);
}
/**
* Return a random SkIRect inside the range specified.
* @param rand Random number generator.
* @param maxX Exclusive maximum x-coordinate. SkIRect's fLeft and fRight will be
* in the range [0, maxX)
* @param maxY Exclusive maximum y-coordinate. SkIRect's fTop and fBottom will be
* in the range [0, maxY)
* @return SkIRect Non-empty, non-degenerate rectangle.
*/
static SkIRect generate_random_rect(SkRandom* rand, int32_t maxX, int32_t maxY) {
SkASSERT(maxX > 1 && maxY > 1);
int32_t left = rand->nextULessThan(maxX);
int32_t right = rand->nextULessThan(maxX);
int32_t top = rand->nextULessThan(maxY);
int32_t bottom = rand->nextULessThan(maxY);
SkIRect rect = SkIRect::MakeLTRB(left, top, right, bottom);
rect.sort();
// Make sure rect is not empty.
if (rect.fLeft == rect.fRight) {
if (rect.fLeft > 0) {
rect.fLeft--;
} else {
rect.fRight++;
// This branch is only taken if 0 == rect.fRight, and
// maxX must be at least 2, so it must still be in
// range.
SkASSERT(rect.fRight < maxX);
}
}
if (rect.fTop == rect.fBottom) {
if (rect.fTop > 0) {
rect.fTop--;
} else {
rect.fBottom++;
// Again, this must be in range.
SkASSERT(rect.fBottom < maxY);
}
}
return rect;
}
/**
* Return a string which includes the name of the file and the preferred config,
* as specified by "--config". The resulting string will match the pattern of
* gm_json.py's IMAGE_FILENAME_PATTERN: "filename_config.png"
*/
static SkString create_json_key(const char* filename) {
SkASSERT(FLAGS_config.count() == 1);
return SkStringPrintf("%s_%s.png", filename, FLAGS_config[0]);
}
// Stored expectations to be written to a file if createExpectationsPath is specified.
static Json::Value gExpectationsToWrite;
/**
* If expectations are to be recorded, record the bitmap expectations into the global
* expectations array.
* As is the case with reading expectations, the key used will combine the filename
* parameter with the preferred config, as specified by "--config", matching the
* pattern of gm_json.py's IMAGE_FILENAME_PATTERN: "filename_config.png"
*/
static void write_expectations(const skiagm::BitmapAndDigest& bitmapAndDigest,
const char* filename) {
const SkString name_config = create_json_key(filename);
if (!FLAGS_createExpectationsPath.isEmpty()) {
// Creates an Expectations object, and add it to the list to write.
skiagm::Expectations expectation(bitmapAndDigest);
Json::Value value = expectation.asJsonValue();
gExpectationsToWrite[name_config.c_str()] = value;
}
}
/**
* If --readExpectationsPath is set, compare this bitmap to the json expectations
* provided.
*
* @param digest GmResultDigest, computed from the decoded bitmap, to compare to
* the existing expectation.
* @param filename String used to find the expected value. Will be combined with the
* preferred config, as specified by "--config", to match the pattern of
* gm_json.py's IMAGE_FILENAME_PATTERN: "filename_config.png". The resulting
* key will be used to find the proper expectations.
* @param failureArray Array to add a failure message to on failure.
* @param missingArray Array to add failure message to when missing image
* expectation.
* @param ignoreArray Array to add failure message to when the image does not match
* the expectation, but this is a failure we can ignore.
* @return bool True in any of these cases:
* - the bitmap matches the expectation.
* False in any of these cases:
* - there is no expectations file.
* - there is an expectations file, but no expectation for this bitmap.
* - there is an expectation for this bitmap, but it did not match.
* - expectation could not be computed from the bitmap.
*/
static bool compare_to_expectations_if_necessary(const skiagm::GmResultDigest& digest,
const char* filename,
SkTArray<SkString, false>* failureArray,
SkTArray<SkString, false>* missingArray,
SkTArray<SkString, false>* ignoreArray) {
// For both writing and reading, the key for this entry will include the name
// of the file and the pref config, matching the pattern of gm_json.py's
// IMAGE_FILENAME_PATTERN: "name_config.png"
const SkString name_config = create_json_key(filename);
if (!digest.isValid()) {
if (failureArray != NULL) {
failureArray->push_back().printf("decoded %s, but could not create a GmResultDigest.",
filename);
}
return false;
}
if (NULL == gJsonExpectations.get()) {
return false;
}
skiagm::Expectations jsExpectation = gJsonExpectations->get(name_config.c_str());
if (jsExpectation.empty()) {
if (missingArray != NULL) {
missingArray->push_back().printf("decoded %s, but could not find expectation.",
filename);
}
return false;
}
if (jsExpectation.match(digest)) {
return true;
}
if (jsExpectation.ignoreFailure()) {
ignoreArray->push_back().printf("%s does not match expectation, but this is known.",
filename);
} else if (failureArray != NULL) {
failureArray->push_back().printf("decoded %s, but the result does not match "
"expectations.",
filename);
}
return false;
}
/**
* Helper function to write a bitmap subset to a file. Only called if subsets were created
* and a writePath was provided. Behaves differently depending on
* FLAGS_writeChecksumBasedFilenames. If true:
* Writes the image to a PNG file named according to the digest hash, as described in
* write_bitmap.
* If false:
* Creates a subdirectory called 'subsets' and writes a PNG to that directory. Also
* creates a subdirectory called 'extracted' and writes a bitmap created using
* extractSubset to a PNG in that directory. Both files will represent the same
* subrectangle and have the same name for convenient comparison. In this case, the
* digest is ignored.
*
* @param writePath Parent directory to hold the folders for the PNG files to write. Must
* not be NULL.
* @param subsetName Basename of the original file, with the dimensions of the subset tacked
* on. Used to name the new file/folder.
* @param bitmapAndDigestFromDecodeSubset SkBitmap (with digest) created by
* SkImageDecoder::DecodeSubset, using rect as the area to decode.
* @param rect Rectangle of the area decoded into bitmapFromDecodeSubset. Used to call
* extractSubset on originalBitmap to create a bitmap with the same dimensions/pixels as
* bitmapFromDecodeSubset (assuming decodeSubset worked properly).
* @param originalBitmap SkBitmap decoded from the same stream as bitmapFromDecodeSubset,
* using SkImageDecoder::decode to get the entire image. Used to create a PNG file for
* comparison to the PNG created by bitmapAndDigestFromDecodeSubset's bitmap.
* @return bool Whether the function succeeded at drawing the decoded subset and the extracted
* subset to files.
*/
static bool write_subset(const char* writePath, const SkString& subsetName,
const skiagm::BitmapAndDigest bitmapAndDigestFromDecodeSubset,
SkIRect rect, const SkBitmap& originalBitmap) {
// All parameters must be valid.
SkASSERT(writePath != NULL);
SkString subsetPath;
if (FLAGS_writeChecksumBasedFilenames) {
subsetPath.set(writePath);
} else {
// Create a subdirectory to hold the results of decodeSubset.
subsetPath = SkOSPath::SkPathJoin(writePath, "subsets");
if (!sk_mkdir(subsetPath.c_str())) {
gFailedSubsetDecodes.push_back().printf("Successfully decoded subset %s, but "
"failed to create a directory to write to.",
subsetName.c_str());
return false;
}
}
SkAssertResult(write_bitmap(subsetPath.c_str(), subsetName.c_str(),
bitmapAndDigestFromDecodeSubset));
gSuccessfulSubsetDecodes.push_back().printf("\twrote %s", subsetName.c_str());
if (!FLAGS_writeChecksumBasedFilenames) {
// FIXME: The goal of extracting the subset is for visual comparison/using skdiff/skpdiff.
// Currently disabling for writeChecksumBasedFilenames since it will be trickier to
// determine which files to compare.
// Also use extractSubset from the original for visual comparison.
// Write the result to a file in a separate subdirectory.
SkBitmap extractedSubset;
if (!originalBitmap.extractSubset(&extractedSubset, rect)) {
gFailedSubsetDecodes.push_back().printf("Successfully decoded subset %s, but failed "
"to extract a similar subset for comparison.",
subsetName.c_str());
return false;
}
SkString dirExtracted = SkOSPath::SkPathJoin(writePath, "extracted");
if (!sk_mkdir(dirExtracted.c_str())) {
gFailedSubsetDecodes.push_back().printf("Successfully decoded subset%s, but failed "
"to create a directory for extractSubset "
"comparison.",
subsetName.c_str());
return false;
}
skiagm::BitmapAndDigest bitmapAndDigestFromExtractSubset(extractedSubset);
SkAssertResult(write_bitmap(dirExtracted.c_str(), subsetName.c_str(),
bitmapAndDigestFromExtractSubset));
}
return true;
}
// FIXME: This test could be run on windows/mac once we remove their dependence on
// getLength. See https://code.google.com/p/skia/issues/detail?id=1570
#if defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_UNIX)
/**
* Dummy class for testing to ensure that a stream without a length decodes the same
* as a stream with a length.
*/
class FILEStreamWithoutLength : public SkFILEStream {
public:
FILEStreamWithoutLength(const char path[])
: INHERITED(path) {}
virtual bool hasLength() const SK_OVERRIDE {
return false;
}
private:
typedef SkFILEStream INHERITED;
};
/**
* Test that decoding a stream which reports to not have a length still results in the
* same image as if it did report to have a length. Assumes that codec was used to
* successfully decode the file using SkFILEStream.
* @param srcPath The path to the file, for recreating the length-less stream.
* @param codec The SkImageDecoder originally used to decode srcPath, which will be used
* again to decode the length-less stream.
* @param digest GmResultDigest computed from decoding the stream the first time.
* Decoding the length-less stream is expected to result in a matching digest.
*/
static void test_stream_without_length(const char srcPath[], SkImageDecoder* codec,
const skiagm::GmResultDigest& digest) {
if (!digest.isValid()) {
// An error was already reported.
return;
}
SkASSERT(srcPath);
SkASSERT(codec);
FILEStreamWithoutLength stream(srcPath);
// This will only be called after a successful decode. Creating a stream from the same
// path should never fail.
SkASSERT(stream.isValid());
SkBitmap bm;
if (!codec->decode(&stream, &bm, gPrefConfig, SkImageDecoder::kDecodePixels_Mode)) {
gDecodeFailures.push_back().appendf("Without using getLength, %s failed to decode\n",
srcPath);
return;
}
skiagm::GmResultDigest lengthLessDigest(bm);
if (!lengthLessDigest.isValid()) {
gDecodeFailures.push_back().appendf("Without using getLength, %s failed to build "
"a digest\n", srcPath);
return;
}
if (!lengthLessDigest.equals(digest)) {
gDecodeFailures.push_back().appendf("Without using getLength, %s did not match digest "
"that uses getLength\n", srcPath);
}
}
#endif // defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_UNIX)
/**
* Replace all instances of oldChar with newChar in str.
* TODO: Add this function to SkString and write tests for it.
*/
static void replace_char(SkString* str, const char oldChar, const char newChar) {
if (NULL == str) {
return;
}
for (size_t i = 0; i < str->size(); ++i) {
if (oldChar == str->operator[](i)) {
str->operator[](i) = newChar;
}
}
}
static void decodeFileAndWrite(const char srcPath[], const SkString* writePath) {
SkBitmap bitmap;
SkFILEStream stream(srcPath);
if (!stream.isValid()) {
gInvalidStreams.push_back().set(srcPath);
return;
}
SkImageDecoder* codec = SkImageDecoder::Factory(&stream);
if (NULL == codec) {
gMissingCodecs.push_back().set(srcPath);
return;
}
SkAutoTDelete<SkImageDecoder> ad(codec);
codec->setSkipWritingZeroes(FLAGS_skip);
codec->setSampleSize(FLAGS_sampleSize);
stream.rewind();
// Create a string representing just the filename itself, for use in json expectations.
SkString basename = SkOSPath::SkBasename(srcPath);
// Replace '_' with '-', so that the names can fit gm_json.py's IMAGE_FILENAME_PATTERN
replace_char(&basename, '_', '-');
// Replace '.' with '-', so the output filename can still retain the original file extension,
// but still end up with only one '.', which denotes the actual extension of the final file.
replace_char(&basename, '.', '-');
const char* filename = basename.c_str();
if (!codec->decode(&stream, &bitmap, gPrefConfig,
SkImageDecoder::kDecodePixels_Mode)) {
if (NULL != gJsonExpectations.get()) {
const SkString name_config = create_json_key(filename);
skiagm::Expectations jsExpectations = gJsonExpectations->get(name_config.c_str());
if (jsExpectations.ignoreFailure()) {
// This is a known failure.
gKnownFailures.push_back().appendf(
"failed to decode %s, which is a known failure.", srcPath);
return;
}
if (jsExpectations.empty()) {
// This is a failure, but it is a new file. Mark it as missing, with
// a note that it should be marked failing.
gMissingExpectations.push_back().appendf(
"new file %s (with no expectations) FAILED to decode.", srcPath);
return;
}
}
// If there was a failure, and either there was no expectations file, or
// the expectations file listed a valid expectation, report the failure.
gDecodeFailures.push_back().set(srcPath);
return;
}
// Test decoding just the bounds. The bounds should always match.
{
stream.rewind();
SkBitmap dim;
if (!codec->decode(&stream, &dim, SkImageDecoder::kDecodeBounds_Mode)) {
SkString failure = SkStringPrintf("failed to decode bounds for %s", srcPath);
gDecodeFailures.push_back() = failure;
} else {
// Now check that the bounds match:
if (dim.width() != bitmap.width() || dim.height() != bitmap.height()) {
SkString failure = SkStringPrintf("bounds do not match for %s", srcPath);
gDecodeFailures.push_back() = failure;
}
}
}
skiagm::BitmapAndDigest bitmapAndDigest(bitmap);
if (compare_to_expectations_if_necessary(bitmapAndDigest.fDigest, filename, &gDecodeFailures,
&gMissingExpectations, &gKnownFailures)) {
gSuccessfulDecodes.push_back().printf("%s [%d %d]", srcPath, bitmap.width(),
bitmap.height());
} else if (!FLAGS_mismatchPath.isEmpty()) {
if (write_bitmap(FLAGS_mismatchPath[0], filename, bitmapAndDigest)) {
gSuccessfulDecodes.push_back().appendf("\twrote %s", filename);
} else {
gEncodeFailures.push_back().set(filename);
}
}
// FIXME: This test could be run on windows/mac once we remove their dependence on
// getLength. See https://code.google.com/p/skia/issues/detail?id=1570
#if defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_UNIX)
test_stream_without_length(srcPath, codec, bitmapAndDigest.fDigest);
#endif
if (writePath != NULL) {
if (write_bitmap(writePath->c_str(), filename, bitmapAndDigest)) {
gSuccessfulDecodes.push_back().appendf("\twrote %s", filename);
} else {
gEncodeFailures.push_back().set(filename);
}
}
write_expectations(bitmapAndDigest, filename);
if (FLAGS_testSubsetDecoding) {
SkDEBUGCODE(bool couldRewind =) stream.rewind();
SkASSERT(couldRewind);
int width, height;
// Build the tile index for decoding subsets. If the image is 1x1, skip subset
// decoding since there are no smaller subsets.
if (codec->buildTileIndex(&stream, &width, &height) && width > 1 && height > 1) {
SkASSERT(bitmap.width() == width && bitmap.height() == height);
// Call decodeSubset multiple times:
SkRandom rand(0);
for (int i = 0; i < 5; i++) {
SkBitmap bitmapFromDecodeSubset;
// FIXME: Come up with a more representative set of rectangles.
SkIRect rect = generate_random_rect(&rand, width, height);
SkString subsetDim = SkStringPrintf("[%d,%d,%d,%d]", rect.fLeft, rect.fTop,
rect.fRight, rect.fBottom);
if (codec->decodeSubset(&bitmapFromDecodeSubset, rect, gPrefConfig)) {
SkString subsetName = SkStringPrintf("%s-%s", filename, subsetDim.c_str());
skiagm::BitmapAndDigest subsetBitmapAndDigest(bitmapFromDecodeSubset);
if (compare_to_expectations_if_necessary(subsetBitmapAndDigest.fDigest,
subsetName.c_str(),
&gFailedSubsetDecodes,
&gMissingSubsetExpectations,
&gKnownSubsetFailures)) {
gSuccessfulSubsetDecodes.push_back().printf("Decoded subset %s from %s",
subsetDim.c_str(), srcPath);
} else if (!FLAGS_mismatchPath.isEmpty()) {
write_subset(FLAGS_mismatchPath[0], subsetName,
subsetBitmapAndDigest, rect, bitmap);
}
write_expectations(subsetBitmapAndDigest, subsetName.c_str());
if (writePath != NULL) {
write_subset(writePath->c_str(), subsetName,
subsetBitmapAndDigest, rect, bitmap);
}
} else {
gFailedSubsetDecodes.push_back().printf("Failed to decode region %s from %s",
subsetDim.c_str(), srcPath);
}
}
}
}
// Do not attempt to re-encode A8, since our image encoders do not support encoding to A8.
if (FLAGS_reencode && bitmap.config() != SkBitmap::kA8_Config) {
// Encode to the format the file was originally in, or PNG if the encoder for the same
// format is unavailable.
SkImageDecoder::Format format = codec->getFormat();
if (SkImageDecoder::kUnknown_Format == format) {
if (stream.rewind()) {
format = SkImageDecoder::GetStreamFormat(&stream);
}
if (SkImageDecoder::kUnknown_Format == format) {
const char* dot = strrchr(srcPath, '.');
if (NULL != dot) {
format = guess_format_from_suffix(dot);
}
if (SkImageDecoder::kUnknown_Format == format) {
SkDebugf("Could not determine type for '%s'\n", srcPath);
format = SkImageDecoder::kPNG_Format;
}
}
} else {
SkASSERT(!stream.rewind() || SkImageDecoder::GetStreamFormat(&stream) == format);
}
SkImageEncoder::Type type = format_to_type(format);
// format should never be kUnknown_Format, so type should never be kUnknown_Type.
SkASSERT(type != SkImageEncoder::kUnknown_Type);
SkImageEncoder* encoder = SkImageEncoder::Create(type);
if (NULL == encoder) {
type = SkImageEncoder::kPNG_Type;
encoder = SkImageEncoder::Create(type);
SkASSERT(encoder);
}
SkAutoTDelete<SkImageEncoder> ade(encoder);
// Encode to a stream.
SkDynamicMemoryWStream wStream;
if (!encoder->encodeStream(&wStream, bitmap, 100)) {
gEncodeFailures.push_back().printf("Failed to reencode %s to type '%s'", srcPath,
suffix_for_type(type));
return;
}
SkAutoTUnref<SkData> data(wStream.copyToData());
if (writePath != NULL && type != SkImageEncoder::kPNG_Type) {
// Write the encoded data to a file. Do not write to PNG, which was already written.
SkString outPath;
make_outname(&outPath, writePath->c_str(), filename, suffix_for_type(type));
SkFILEWStream file(outPath.c_str());
if(file.write(data->data(), data->size())) {
gSuccessfulDecodes.push_back().appendf("\twrote %s", outPath.c_str());
} else {
gEncodeFailures.push_back().printf("Failed to write %s", outPath.c_str());
}
}
// Ensure that the reencoded data can still be decoded.
SkMemoryStream memStream(data);
SkBitmap redecodedBitmap;
SkImageDecoder::Format formatOnSecondDecode;
if (SkImageDecoder::DecodeStream(&memStream, &redecodedBitmap, gPrefConfig,
SkImageDecoder::kDecodePixels_Mode,
&formatOnSecondDecode)) {
SkASSERT(format_to_type(formatOnSecondDecode) == type);
} else {
gDecodeFailures.push_back().printf("Failed to redecode %s after reencoding to '%s'",
srcPath, suffix_for_type(type));
}
}
}
///////////////////////////////////////////////////////////////////////////////
// If strings is not empty, print title, followed by each string on its own line starting
// with a tab.
// @return bool True if strings had at least one entry.
static bool print_strings(const char* title, const SkTArray<SkString, false>& strings) {
if (strings.count() > 0) {
SkDebugf("%s:\n", title);
for (int i = 0; i < strings.count(); i++) {
SkDebugf("\t%s\n", strings[i].c_str());
}
SkDebugf("\n");
return true;
}
return false;
}
/**
* If directory is non null and does not end with a path separator, append one.
* @param directory SkString representing the path to a directory. If the last character is not a
* path separator (specific to the current OS), append one.
*/
static void append_path_separator_if_necessary(SkString* directory) {
if (directory != NULL && directory->c_str()[directory->size() - 1] != SkPATH_SEPARATOR) {
directory->appendf("%c", SkPATH_SEPARATOR);
}
}
/**
* Return true if the filename represents an image.
*/
static bool is_image_file(const char* filename) {
const char* gImageExtensions[] = {
".png", ".PNG", ".jpg", ".JPG", ".jpeg", ".JPEG", ".bmp", ".BMP",
".webp", ".WEBP", ".ico", ".ICO", ".wbmp", ".WBMP", ".gif", ".GIF"
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gImageExtensions); ++i) {
if (SkStrEndsWith(filename, gImageExtensions[i])) {
return true;
}
}
return false;
}
int tool_main(int argc, char** argv);
int tool_main(int argc, char** argv) {
SkCommandLineFlags::SetUsage("Decode files, and optionally write the results to files.");
SkCommandLineFlags::Parse(argc, argv);
if (FLAGS_readPath.count() < 1) {
SkDebugf("Folder(s) or image(s) to decode are required.\n");
return -1;
}
SkAutoGraphics ag;
if (!FLAGS_readExpectationsPath.isEmpty() && sk_exists(FLAGS_readExpectationsPath[0])) {
gJsonExpectations.reset(SkNEW_ARGS(skiagm::JsonExpectationsSource,
(FLAGS_readExpectationsPath[0])));
}
SkString outDir;
SkString* outDirPtr;
if (FLAGS_writePath.count() == 1) {
outDir.set(FLAGS_writePath[0]);
append_path_separator_if_necessary(&outDir);
outDirPtr = &outDir;
} else {
outDirPtr = NULL;
}
if (FLAGS_config.count() == 1) {
// Only consider the first config specified on the command line.
const char* config = FLAGS_config[0];
if (0 == strcmp(config, "8888")) {
gPrefConfig = SkBitmap::kARGB_8888_Config;
} else if (0 == strcmp(config, "565")) {
gPrefConfig = SkBitmap::kRGB_565_Config;
} else if (0 == strcmp(config, "A8")) {
gPrefConfig = SkBitmap::kA8_Config;
} else if (0 != strcmp(config, "None")) {
SkDebugf("Invalid preferred config\n");
return -1;
}
}
for (int i = 0; i < FLAGS_readPath.count(); i++) {
const char* readPath = FLAGS_readPath[i];
if (strlen(readPath) < 1) {
break;
}
if (sk_isdir(readPath)) {
const char* dir = readPath;
SkOSFile::Iter iter(dir);
SkString filename;
while (iter.next(&filename)) {
if (!is_image_file(filename.c_str())) {
continue;
}
SkString fullname = SkOSPath::SkPathJoin(dir, filename.c_str());
decodeFileAndWrite(fullname.c_str(), outDirPtr);
}
} else if (sk_exists(readPath) && is_image_file(readPath)) {
decodeFileAndWrite(readPath, outDirPtr);
}
}
if (!FLAGS_createExpectationsPath.isEmpty()) {
// Use an empty value for everything besides expectations, since the reader only cares
// about the expectations.
Json::Value nullValue;
Json::Value root = skiagm::CreateJsonTree(gExpectationsToWrite, nullValue, nullValue,
nullValue, nullValue);
std::string jsonStdString = root.toStyledString();
SkFILEWStream stream(FLAGS_createExpectationsPath[0]);
stream.write(jsonStdString.c_str(), jsonStdString.length());
}
// Add some space, since codecs may print warnings without newline.
SkDebugf("\n\n");
bool failed = print_strings("Invalid files", gInvalidStreams);
failed |= print_strings("Missing codec", gMissingCodecs);
failed |= print_strings("Failed to decode", gDecodeFailures);
failed |= print_strings("Failed to encode", gEncodeFailures);
print_strings("Decoded", gSuccessfulDecodes);
print_strings("Missing expectations", gMissingExpectations);
if (FLAGS_testSubsetDecoding) {
failed |= print_strings("Failed subset decodes", gFailedSubsetDecodes);
print_strings("Decoded subsets", gSuccessfulSubsetDecodes);
print_strings("Missing subset expectations", gMissingSubsetExpectations);
print_strings("Known subset failures", gKnownSubsetFailures);
}
print_strings("Known failures", gKnownFailures);
return failed ? -1 : 0;
}
#if !defined SK_BUILD_FOR_IOS
int main(int argc, char * const argv[]) {
return tool_main(argc, (char**) argv);
}
#endif
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