79e378d9b7
Factor our BMP code for reading the header, and call it after a rewind. BUG=skia:3257 Review URL: https://codereview.chromium.org/1057483003
99 lines
3.2 KiB
C++
99 lines
3.2 KiB
C++
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Resources.h"
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#include "SkBitmap.h"
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#include "SkCodec.h"
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#include "SkMD5.h"
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#include "Test.h"
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static SkStreamAsset* resource(const char path[]) {
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SkString fullPath = GetResourcePath(path);
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return SkStream::NewFromFile(fullPath.c_str());
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}
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static void md5(const SkBitmap& bm, SkMD5::Digest* digest) {
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SkAutoLockPixels autoLockPixels(bm);
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SkASSERT(bm.getPixels());
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SkMD5 md5;
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size_t rowLen = bm.info().bytesPerPixel() * bm.width();
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for (int y = 0; y < bm.height(); ++y) {
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md5.update(static_cast<uint8_t*>(bm.getAddr(0, y)), rowLen);
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}
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md5.finish(*digest);
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}
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static void check(skiatest::Reporter* r,
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const char path[],
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SkISize size,
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bool canRewind) {
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SkAutoTDelete<SkStream> stream(resource(path));
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if (!stream) {
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SkDebugf("Missing resource '%s'\n", path);
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return;
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}
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SkAutoTDelete<SkImageGenerator> gen(
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SkCodec::NewFromStream(stream.detach()));
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if (!gen) {
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ERRORF(r, "Unable to decode '%s'", path);
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return;
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}
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SkImageInfo info = gen->getInfo();
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REPORTER_ASSERT(r, info.dimensions() == size);
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SkBitmap bm;
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bm.allocPixels(info);
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SkAutoLockPixels autoLockPixels(bm);
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SkImageGenerator::Result result =
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gen->getPixels(info, bm.getPixels(), bm.rowBytes(), NULL, NULL, NULL);
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REPORTER_ASSERT(r, result == SkImageGenerator::kSuccess);
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SkMD5::Digest digest1, digest2;
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md5(bm, &digest1);
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bm.eraseColor(SK_ColorYELLOW);
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result =
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gen->getPixels(info, bm.getPixels(), bm.rowBytes(), NULL, NULL, NULL);
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// All ImageGenerators should support re-decoding the pixels.
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// It is a known bug that some can not.
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if (canRewind) {
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REPORTER_ASSERT(r, result == SkImageGenerator::kSuccess);
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// verify that re-decoding gives the same result.
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md5(bm, &digest2);
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REPORTER_ASSERT(r, digest1 == digest2);
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}
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}
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DEF_TEST(Codec, r) {
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// WBMP
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check(r, "mandrill.wbmp", SkISize::Make(512, 512), true);
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// BMP
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check(r, "randPixels.bmp", SkISize::Make(8, 8), true);
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// ICO
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// TODO (msarett): SkIcoCodec should be able to rewind.
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check(r, "color_wheel.ico", SkISize::Make(128, 128), false);
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// PNG
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// TODO (scroggo): SkPngCodec should be able to rewind.
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check(r, "arrow.png", SkISize::Make(187, 312), false);
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check(r, "baby_tux.png", SkISize::Make(240, 246), false);
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check(r, "color_wheel.png", SkISize::Make(128, 128), false);
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check(r, "half-transparent-white-pixel.png", SkISize::Make(1, 1), false);
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check(r, "mandrill_128.png", SkISize::Make(128, 128), false);
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check(r, "mandrill_16.png", SkISize::Make(16, 16), false);
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check(r, "mandrill_256.png", SkISize::Make(256, 256), false);
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check(r, "mandrill_32.png", SkISize::Make(32, 32), false);
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check(r, "mandrill_512.png", SkISize::Make(512, 512), false);
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check(r, "mandrill_64.png", SkISize::Make(64, 64), false);
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check(r, "plane.png", SkISize::Make(250, 126), false);
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check(r, "randPixels.png", SkISize::Make(8, 8), false);
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check(r, "yellow_rose.png", SkISize::Make(400, 301), false);
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}
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