blob: 11b99c214d1f9b5ea3753057033603ae23d60807 [file] [log] [blame]
* Copyright 2016 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 "SkCodec.h"
#include "SkCommandLineFlags.h"
#include "SkData.h"
#include "SkJSONCPP.h"
#include "SkMD5.h"
#include "SkOSFile.h"
#include "SkPicture.h"
#include "SkPixelSerializer.h"
#include "SkStream.h"
#include "SkTHash.h"
#include <map>
DEFINE_string2(skps, s, "skps", "A path to a directory of skps.");
DEFINE_string2(out, o, "img-out", "A path to an output directory.");
DEFINE_bool(testDecode, false, "Indicates if we want to test that the images decode successfully.");
DEFINE_bool(writeImages, true, "Indicates if we want to write out images.");
DEFINE_string2(failuresJsonPath, j, "",
"Dump SKP and count of unknown images to the specified JSON file. Will not be "
"written anywhere if empty.");
static int gKnown;
static const char* gOutputDir;
static std::map<std::string, unsigned int> gSkpToUnknownCount = {};
static SkTHashSet<SkMD5::Digest> gSeen;
struct Sniffer : public SkPixelSerializer {
std::string skpName;
Sniffer(std::string name) {
skpName = name;
void sniff(const void* ptr, size_t len) {
SkMD5 md5;
md5.write(ptr, len);
SkMD5::Digest digest;
if (gSeen.contains(digest)) {
SkAutoTUnref<SkData> data(SkData::NewWithoutCopy(ptr, len));
SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(data));
if (!codec) {
// FIXME: This code is currently unreachable because we create an empty generator when
// we fail to create a codec.
SkDebugf("Codec could not be created for %s\n", skpName.c_str());
SkString ext;
switch (codec->getEncodedFormat()) {
case SkEncodedFormat::kBMP_SkEncodedFormat: ext = "bmp"; break;
case SkEncodedFormat::kGIF_SkEncodedFormat: ext = "gif"; break;
case SkEncodedFormat::kICO_SkEncodedFormat: ext = "ico"; break;
case SkEncodedFormat::kJPEG_SkEncodedFormat: ext = "jpg"; break;
case SkEncodedFormat::kPNG_SkEncodedFormat: ext = "png"; break;
case SkEncodedFormat::kDNG_SkEncodedFormat: ext = "dng"; break;
case SkEncodedFormat::kWBMP_SkEncodedFormat: ext = "wbmp"; break;
case SkEncodedFormat::kWEBP_SkEncodedFormat: ext = "webp"; break;
// This should be unreachable because we cannot create a codec if we do not know
// the image type.
if (FLAGS_testDecode) {
SkBitmap bitmap;
SkImageInfo info = codec->getInfo().makeColorType(kN32_SkColorType);
const SkCodec::Result result = codec->getPixels(
info, bitmap.getPixels(), bitmap.rowBytes());
if (SkCodec::kIncompleteInput != result && SkCodec::kSuccess != result)
SkDebugf("Decoding failed for %s\n", skpName.c_str());
if (FLAGS_writeImages) {
SkString path;
path.appendf("%s/%d.%s", gOutputDir, gKnown, ext.c_str());
SkFILEWStream file(path.c_str());
file.write(ptr, len);
SkDebugf("%s\n", path.c_str());
bool onUseEncodedData(const void* ptr, size_t len) override {
this->sniff(ptr, len);
return true;
SkData* onEncode(const SkPixmap&) override { return nullptr; }
int main(int argc, char** argv) {
"Usage: get_images_from_skps -s <dir of skps> -o <dir for output images> --testDecode "
"-j <output JSON path>\n");
SkCommandLineFlags::Parse(argc, argv);
const char* inputs = FLAGS_skps[0];
gOutputDir = FLAGS_out[0];
if (!sk_isdir(inputs) || !sk_isdir(gOutputDir)) {
return 1;
SkOSFile::Iter iter(inputs, "skp");
for (SkString file;; ) {
SkAutoTDelete<SkStream> stream =
SkStream::NewFromFile(SkOSPath::Join(inputs, file.c_str()).c_str());
sk_sp<SkPicture> picture(SkPicture::MakeFromStream(stream));
SkDynamicMemoryWStream scratch;
Sniffer sniff(file.c_str());
picture->serialize(&scratch, &sniff);
int totalUnknowns = 0;
JSON results are written out in the following format:
"failures": {
"skp1": 12,
"skp4": 2,
"totalFailures": 32,
"totalSuccesses": 21,
Json::Value fRoot;
for(auto it = gSkpToUnknownCount.cbegin(); it != gSkpToUnknownCount.cend(); ++it)
SkDebugf("%s %d\n", it->first.c_str(), it->second);
totalUnknowns += it->second;
fRoot["failures"][it->first.c_str()] = it->second;
SkDebugf("%d known, %d unknown\n", gKnown, totalUnknowns);
fRoot["totalFailures"] = totalUnknowns;
fRoot["totalSuccesses"] = gKnown;
if (totalUnknowns > 0) {
if (!FLAGS_failuresJsonPath.isEmpty()) {
SkDebugf("Writing failures to %s\n", FLAGS_failuresJsonPath[0]);
SkFILEWStream stream(FLAGS_failuresJsonPath[0]);
return -1;
return 0;