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Diffstat (limited to 'tests/PipeTest.cpp')
-rw-r--r-- | tests/PipeTest.cpp | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/tests/PipeTest.cpp b/tests/PipeTest.cpp new file mode 100644 index 0000000000..f345debb8c --- /dev/null +++ b/tests/PipeTest.cpp @@ -0,0 +1,88 @@ +/* + * 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 "Resources.h" +#include "SkCanvas.h" +#include "SkPipe.h" +#include "SkPaint.h" +#include "SkStream.h" +#include "SkSurface.h" +#include "Test.h" + +#include "SkNullCanvas.h" +#include "SkAutoPixmapStorage.h" + +static void drain(SkPipeDeserializer* deserial, SkDynamicMemoryWStream* stream) { + std::unique_ptr<SkCanvas> canvas(SkCreateNullCanvas()); + sk_sp<SkData> data = stream->detachAsData(); + deserial->playback(data->data(), data->size(), canvas.get()); +} + +static sk_sp<SkImage> drain_as_image(SkPipeDeserializer* deserial, SkDynamicMemoryWStream* stream) { + sk_sp<SkData> data = stream->detachAsData(); + return deserial->readImage(data->data(), data->size()); +} + +static bool deep_equal(SkImage* a, SkImage* b) { + if (a->width() != b->width() || a->height() != b->height()) { + return false; + } + + const SkImageInfo info = SkImageInfo::MakeN32Premul(a->width(), a->height()); + SkAutoPixmapStorage pmapA, pmapB; + pmapA.alloc(info); + pmapB.alloc(info); + + if (!a->readPixels(pmapA, 0, 0) || !b->readPixels(pmapB, 0, 0)) { + return false; + } + + for (int y = 0; y < info.height(); ++y) { + if (memcmp(pmapA.addr32(0, y), pmapB.addr32(0, y), info.width() * sizeof(SkPMColor))) { + return false; + } + } + return true; +} + +DEF_TEST(Pipe_image, reporter) { + sk_sp<SkImage> img = GetResourceAsImage("mandrill_128.png"); + SkASSERT(img.get()); + + SkPipeSerializer serializer; + SkPipeDeserializer deserializer; + + SkDynamicMemoryWStream stream; + SkCanvas* wc = serializer.beginWrite(SkRect::MakeWH(100, 100), &stream); + wc->drawImage(img, 0, 0, nullptr); + serializer.endWrite(); + size_t offset0 = stream.bytesWritten(); + REPORTER_ASSERT(reporter, offset0 > 100); // the raw image must be sorta big + drain(&deserializer, &stream); + + // try drawing the same image again -- it should be much smaller + wc = serializer.beginWrite(SkRect::MakeWH(100, 100), &stream); + wc->drawImage(img, 0, 0, nullptr); + size_t offset1 = stream.bytesWritten(); + serializer.endWrite(); + REPORTER_ASSERT(reporter, offset1 <= 32); + drain(&deserializer, &stream); + + // try serializing the same image directly, again it should be small + serializer.write(img.get(), &stream); + size_t offset2 = stream.bytesWritten(); + REPORTER_ASSERT(reporter, offset2 <= 32); + auto img1 = drain_as_image(&deserializer, &stream); + REPORTER_ASSERT(reporter, deep_equal(img.get(), img1.get())); + + // try serializing the same image directly (again), check that it is the same! + serializer.write(img.get(), &stream); + size_t offset3 = stream.bytesWritten(); + REPORTER_ASSERT(reporter, offset3 <= 32); + auto img2 = drain_as_image(&deserializer, &stream); + REPORTER_ASSERT(reporter, img1.get() == img2.get()); +} |