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- /*
- * Copyright 2017 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "include/codec/SkCodec.h"
- #include "include/core/SkBitmap.h"
- #include "include/core/SkData.h"
- #include "include/core/SkImageInfo.h"
- #include "include/core/SkRefCnt.h"
- #include "include/core/SkStream.h"
- #include "include/private/SkTemplates.h"
- #include "src/core/SkMakeUnique.h"
- #include "tests/Test.h"
- #include "tools/Resources.h"
- #include <cstring>
- #include <initializer_list>
- #include <memory>
- #include <utility>
- namespace {
- // This class wraps another SkStream. It does not own the underlying stream, so
- // that the underlying stream can be reused starting from where the first
- // client left off. This mimics Android's JavaInputStreamAdaptor.
- class UnowningStream : public SkStream {
- public:
- explicit UnowningStream(SkStream* stream)
- : fStream(stream)
- {}
- size_t read(void* buf, size_t bytes) override {
- return fStream->read(buf, bytes);
- }
- bool rewind() override {
- return fStream->rewind();
- }
- bool isAtEnd() const override {
- return fStream->isAtEnd();
- }
- private:
- SkStream* fStream; // Unowned.
- };
- } // namespace
- // Test that some SkCodecs do not attempt to read input beyond the logical
- // end of the data. Some other SkCodecs do, but some Android apps rely on not
- // doing so for PNGs. Test on other formats that work.
- DEF_TEST(Codec_end, r) {
- for (const char* path : { "images/plane.png",
- "images/yellow_rose.png",
- "images/plane_interlaced.png",
- "images/google_chrome.ico",
- "images/color_wheel.ico",
- "images/mandrill.wbmp",
- "images/randPixels.bmp",
- }) {
- sk_sp<SkData> data = GetResourceAsData(path);
- if (!data) {
- continue;
- }
- const int kNumImages = 2;
- const size_t size = data->size();
- sk_sp<SkData> multiData = SkData::MakeUninitialized(size * kNumImages);
- void* dst = multiData->writable_data();
- for (int i = 0; i < kNumImages; i++) {
- memcpy(SkTAddOffset<void>(dst, size * i), data->data(), size);
- }
- data.reset();
- SkMemoryStream stream(std::move(multiData));
- for (int i = 0; i < kNumImages; ++i) {
- std::unique_ptr<SkCodec> codec(SkCodec::MakeFromStream(
- skstd::make_unique<UnowningStream>(&stream)));
- if (!codec) {
- ERRORF(r, "Failed to create a codec from %s, iteration %i", path, i);
- continue;
- }
- auto info = codec->getInfo().makeColorType(kN32_SkColorType);
- SkBitmap bm;
- bm.allocPixels(info);
- auto result = codec->getPixels(bm.info(), bm.getPixels(), bm.rowBytes());
- if (result != SkCodec::kSuccess) {
- ERRORF(r, "Failed to getPixels from %s, iteration %i error %i", path, i, result);
- continue;
- }
- }
- }
- }
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