blob: 0debe367bd2bc91c563c4497f0facdca87c7c3cb [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 "SkColorSpace.h"
#include "SkCommandLineFlags.h"
#include "SkData.h"
#include "SkJSONCPP.h"
#include "SkMD5.h"
#include "SkOSFile.h"
#include "SkOSPath.h"
#include "SkPicture.h"
#include "SkPixelSerializer.h"
#include "SkStream.h"
#include "SkTHash.h"
#include <iostream>
#include <map>
DEFINE_string2(skps, s, "skps", "A path to a directory of skps or a single skp.");
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 supported/decoded images.");
DEFINE_bool(writeFailedImages, false,
"Indicates if we want to write out unsupported/failed to decode 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 std::map<std::string, unsigned int> gSkpToUnsupportedCount;
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)) {
sk_sp<SkData> data(SkData::MakeWithoutCopy(ptr, len));
std::unique_ptr<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 SkEncodedImageFormat::kBMP: ext = "bmp"; break;
case SkEncodedImageFormat::kGIF: ext = "gif"; break;
case SkEncodedImageFormat::kICO: ext = "ico"; break;
case SkEncodedImageFormat::kJPEG: ext = "jpg"; break;
case SkEncodedImageFormat::kPNG: ext = "png"; break;
case SkEncodedImageFormat::kDNG: ext = "dng"; break;
case SkEncodedImageFormat::kWBMP: ext = "wbmp"; break;
case SkEncodedImageFormat::kWEBP: ext = "webp"; break;
// This should be unreachable because we cannot create a codec if we do not know
// the image type.
auto writeImage = [&] (const char* name, int num) {
SkString path;
path.appendf("%s/%s%d.%s", gOutputDir, name, num, ext.c_str());
SkFILEWStream file(path.c_str());
file.write(ptr, len);
SkDebugf("%s\n", path.c_str());
if (FLAGS_testDecode) {
SkBitmap bitmap;
SkImageInfo info = codec->getInfo().makeColorType(kN32_SkColorType);
const SkCodec::Result result = codec->getPixels(
info, bitmap.getPixels(), bitmap.rowBytes());
switch (result) {
case SkCodec::kSuccess:
case SkCodec::kIncompleteInput:
case SkCodec::kErrorInInput:
SkDebugf("Decoding failed for %s\n", skpName.c_str());
if (FLAGS_writeFailedImages) {
writeImage("unknown", gSkpToUnknownCount[skpName]);
if (FLAGS_writeImages) {
writeImage("", gKnown);
bool onUseEncodedData(const void* ptr, size_t len) override {
this->sniff(ptr, len);
return true;
SkData* onEncode(const SkPixmap&) override { return nullptr; }
static bool get_images_from_file(const SkString& file) {
auto stream = SkStream::MakeFromFile(file.c_str());
sk_sp<SkPicture> picture(SkPicture::MakeFromStream(stream.get()));
if (!picture) {
return false;
SkDynamicMemoryWStream scratch;
Sniffer sniff(file.c_str());
picture->serialize(&scratch, &sniff);
return true;
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> --writeImages, --writeFailedImages\n");
SkCommandLineFlags::Parse(argc, argv);
const char* inputs = FLAGS_skps[0];
gOutputDir = FLAGS_out[0];
if (!sk_isdir(gOutputDir)) {
return 1;
if (sk_isdir(inputs)) {
SkOSFile::Iter iter(inputs, "skp");
for (SkString file;; ) {
if (!get_images_from_file(SkOSPath::Join(inputs, file.c_str()))) {
return 2;
} else {
if (!get_images_from_file(SkString(inputs))) {
return 2;
JSON results are written out in the following format:
"failures": {
"skp1": 12,
"skp4": 2,
"unsupported": {
"skp9": 13,
"skp17": 3,
"totalFailures": 32,
"totalUnsupported": 9,
"totalSuccesses": 21,
Json::Value fRoot;
int totalFailures = 0;
for(auto it = gSkpToUnknownCount.cbegin(); it != gSkpToUnknownCount.cend(); ++it)
SkDebugf("%s %d\n", it->first.c_str(), it->second);
totalFailures += it->second;
fRoot["failures"][it->first.c_str()] = it->second;
fRoot["totalFailures"] = totalFailures;
int totalUnsupported = 0;
#ifdef SK_DEBUG
for (const auto& unsupported : gSkpToUnsupportedCount) {
SkDebugf("%s %d\n", unsupported.first.c_str(), unsupported.second);
totalUnsupported += unsupported.second;
fRoot["unsupported"][unsupported.first] = unsupported.second;
fRoot["totalUnsupported"] = totalUnsupported;
fRoot["totalSuccesses"] = gKnown;
SkDebugf("%d known, %d failures, %d unsupported\n", gKnown, totalFailures, totalUnsupported);
if (totalFailures > 0 || totalUnsupported > 0) {
if (!FLAGS_failuresJsonPath.isEmpty()) {
SkDebugf("Writing failures to %s\n", FLAGS_failuresJsonPath[0]);
SkFILEWStream stream(FLAGS_failuresJsonPath[0]);
return -1;
return 0;