Rename CodexTest.cpp to CodecTest.cpp

tests/CodexTest.cpp

Index: tests/CodexTest.cpp
diff --git a/tests/CodexTest.cpp b/tests/CodexTest.cpp
deleted file mode 100644
index bdb5e7792e983c686a3de82a4d4064da76846d73..0000000000000000000000000000000000000000
--- a/tests/CodexTest.cpp
+++ /dev/null
@@ -1,974 +0,0 @@
-/*
- * Copyright 2015 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 "SkAndroidCodec.h"
-#include "SkBitmap.h"
-#include "SkCodec.h"
-#include "SkCodecImageGenerator.h"
-#include "SkData.h"
-#include "SkFrontBufferedStream.h"
-#include "SkMD5.h"
-#include "SkRandom.h"
-#include "SkStream.h"
-#include "SkStreamPriv.h"
-#include "SkPngChunkReader.h"
-#include "Test.h"
-
-#include "png.h"
-
-static SkStreamAsset* resource(const char path[]) {
-    SkString fullPath = GetResourcePath(path);
-    return SkStream::NewFromFile(fullPath.c_str());
-}
-
-static void md5(const SkBitmap& bm, SkMD5::Digest* digest) {
-    SkAutoLockPixels autoLockPixels(bm);
-    SkASSERT(bm.getPixels());
-    SkMD5 md5;
-    size_t rowLen = bm.info().bytesPerPixel() * bm.width();
-    for (int y = 0; y < bm.height(); ++y) {
-        md5.update(static_cast<uint8_t*>(bm.getAddr(0, y)), rowLen);
-    }
-    md5.finish(*digest);
-}
-
-/**
- *  Compute the digest for bm and compare it to a known good digest.
- *  @param r Reporter to assert that bm's digest matches goodDigest.
- *  @param goodDigest The known good digest to compare to.
- *  @param bm The bitmap to test.
- */
-static void compare_to_good_digest(skiatest::Reporter* r, const SkMD5::Digest& goodDigest,
-                           const SkBitmap& bm) {
-    SkMD5::Digest digest;
-    md5(bm, &digest);
-    REPORTER_ASSERT(r, digest == goodDigest);
-}
-
-/**
- *  Test decoding an SkCodec to a particular SkImageInfo.
- *
- *  Calling getPixels(info) should return expectedResult, and if goodDigest is non nullptr,
- *  the resulting decode should match.
- */
-template<typename Codec>
-static void test_info(skiatest::Reporter* r, Codec* codec, const SkImageInfo& info,
-                      SkCodec::Result expectedResult, const SkMD5::Digest* goodDigest) {
-    SkBitmap bm;
-    bm.allocPixels(info);
-    SkAutoLockPixels autoLockPixels(bm);
-
-    SkCodec::Result result = codec->getPixels(info, bm.getPixels(), bm.rowBytes());
-    REPORTER_ASSERT(r, result == expectedResult);
-
-    if (goodDigest) {
-        compare_to_good_digest(r, *goodDigest, bm);
-    }
-}
-
-SkIRect generate_random_subset(SkRandom* rand, int w, int h) {
-    SkIRect rect;
-    do {
-        rect.fLeft = rand->nextRangeU(0, w);
-        rect.fTop = rand->nextRangeU(0, h);
-        rect.fRight = rand->nextRangeU(0, w);
-        rect.fBottom = rand->nextRangeU(0, h);
-        rect.sort();
-    } while (rect.isEmpty());
-    return rect;
-}
-
-template<typename Codec>
-static void test_codec(skiatest::Reporter* r, Codec* codec, SkBitmap& bm, const SkImageInfo& info,
-        const SkISize& size, SkCodec::Result expectedResult, SkMD5::Digest* digest,
-        const SkMD5::Digest* goodDigest) {
-
-    REPORTER_ASSERT(r, info.dimensions() == size);
-    bm.allocPixels(info);
-    SkAutoLockPixels autoLockPixels(bm);
-
-    SkCodec::Result result = codec->getPixels(info, bm.getPixels(), bm.rowBytes());
-    REPORTER_ASSERT(r, result == expectedResult);
-
-    md5(bm, digest);
-    if (goodDigest) {
-        REPORTER_ASSERT(r, *digest == *goodDigest);
-    }
-
-    {
-        // Test decoding to 565
-        SkImageInfo info565 = info.makeColorType(kRGB_565_SkColorType);
-        SkCodec::Result expected565 = info.alphaType() == kOpaque_SkAlphaType ?
-                expectedResult : SkCodec::kInvalidConversion;
-        test_info(r, codec, info565, expected565, nullptr);
-    }
-
-    // Verify that re-decoding gives the same result.  It is interesting to check this after
-    // a decode to 565, since choosing to decode to 565 may result in some of the decode
-    // options being modified.  These options should return to their defaults on another
-    // decode to kN32, so the new digest should match the old digest.
-    test_info(r, codec, info, expectedResult, digest);
-
-    {
-        // Check alpha type conversions
-        if (info.alphaType() == kOpaque_SkAlphaType) {
-            test_info(r, codec, info.makeAlphaType(kUnpremul_SkAlphaType),
-                      expectedResult, digest);
-            test_info(r, codec, info.makeAlphaType(kPremul_SkAlphaType),
-                      expectedResult, digest);
-        } else {
-            // Decoding to opaque should fail
-            test_info(r, codec, info.makeAlphaType(kOpaque_SkAlphaType),
-                      SkCodec::kInvalidConversion, nullptr);
-            SkAlphaType otherAt = info.alphaType();
-            if (kPremul_SkAlphaType == otherAt) {
-                otherAt = kUnpremul_SkAlphaType;
-            } else {
-                otherAt = kPremul_SkAlphaType;
-            }
-            // The other non-opaque alpha type should always succeed, but not match.
-            test_info(r, codec, info.makeAlphaType(otherAt), expectedResult, nullptr);
-        }
-    }
-}
-
-static bool supports_partial_scanlines(const char path[]) {
-    static const char* const exts[] = {
-        "jpg", "jpeg", "png", "webp"
-        "JPG", "JPEG", "PNG", "WEBP"
-    };
-
-    for (uint32_t i = 0; i < SK_ARRAY_COUNT(exts); i++) {
-        if (SkStrEndsWith(path, exts[i])) {
-            return true;
-        }
-    }
-    return false;
-}
-
-static void check(skiatest::Reporter* r,
-                  const char path[],
-                  SkISize size,
-                  bool supportsScanlineDecoding,
-                  bool supportsSubsetDecoding,
-                  bool supportsIncomplete = true) {
-
-    SkAutoTDelete<SkStream> stream(resource(path));
-    if (!stream) {
-        SkDebugf("Missing resource '%s'\n", path);
-        return;
-    }
-
-    SkAutoTDelete<SkCodec> codec(nullptr);
-    bool isIncomplete = supportsIncomplete;
-    if (isIncomplete) {
-        size_t size = stream->getLength();
-        SkAutoTUnref<SkData> data((SkData::NewFromStream(stream, 2 * size / 3)));
-        codec.reset(SkCodec::NewFromData(data));
-    } else {
-        codec.reset(SkCodec::NewFromStream(stream.release()));
-    }
-    if (!codec) {
-        ERRORF(r, "Unable to decode '%s'", path);
-        return;
-    }
-
-    // Test full image decodes with SkCodec
-    SkMD5::Digest codecDigest;
-    const SkImageInfo info = codec->getInfo().makeColorType(kN32_SkColorType);
-    SkBitmap bm;
-    SkCodec::Result expectedResult = isIncomplete ? SkCodec::kIncompleteInput : SkCodec::kSuccess;
-    test_codec(r, codec.get(), bm, info, size, expectedResult, &codecDigest, nullptr);
-
-    // Scanline decoding follows.
-    // Need to call startScanlineDecode() first.
-    REPORTER_ASSERT(r, codec->getScanlines(bm.getAddr(0, 0), 1, 0)
-            == 0);
-    REPORTER_ASSERT(r, codec->skipScanlines(1)
-            == 0);
-
-    const SkCodec::Result startResult = codec->startScanlineDecode(info);
-    if (supportsScanlineDecoding) {
-        bm.eraseColor(SK_ColorYELLOW);
-
-        REPORTER_ASSERT(r, startResult == SkCodec::kSuccess);
-
-        for (int y = 0; y < info.height(); y++) {
-            const int lines = codec->getScanlines(bm.getAddr(0, y), 1, 0);
-            if (!isIncomplete) {
-                REPORTER_ASSERT(r, 1 == lines);
-            }
-        }
-        // verify that scanline decoding gives the same result.
-        if (SkCodec::kTopDown_SkScanlineOrder == codec->getScanlineOrder()) {
-            compare_to_good_digest(r, codecDigest, bm);
-        }
-
-        // Cannot continue to decode scanlines beyond the end
-        REPORTER_ASSERT(r, codec->getScanlines(bm.getAddr(0, 0), 1, 0)
-                == 0);
-
-        // Interrupting a scanline decode with a full decode starts from
-        // scratch
-        REPORTER_ASSERT(r, codec->startScanlineDecode(info) == SkCodec::kSuccess);
-        const int lines = codec->getScanlines(bm.getAddr(0, 0), 1, 0);
-        if (!isIncomplete) {
-            REPORTER_ASSERT(r, lines == 1);
-        }
-        REPORTER_ASSERT(r, codec->getPixels(bm.info(), bm.getPixels(), bm.rowBytes())
-                == expectedResult);
-        REPORTER_ASSERT(r, codec->getScanlines(bm.getAddr(0, 0), 1, 0)
-                == 0);
-        REPORTER_ASSERT(r, codec->skipScanlines(1)
-                == 0);
-
-        // Test partial scanline decodes
-        if (supports_partial_scanlines(path) && info.width() >= 3) {
-            SkCodec::Options options;
-            int width = info.width();
-            int height = info.height();
-            SkIRect subset = SkIRect::MakeXYWH(2 * (width / 3), 0, width / 3, height);
-            options.fSubset = &subset;
-
-            const SkCodec::Result partialStartResult = codec->startScanlineDecode(info, &options,
-                    nullptr, nullptr);
-            REPORTER_ASSERT(r, partialStartResult == SkCodec::kSuccess);
-
-            for (int y = 0; y < height; y++) {
-                const int lines = codec->getScanlines(bm.getAddr(0, y), 1, 0);
-                if (!isIncomplete) {
-                    REPORTER_ASSERT(r, 1 == lines);
-                }
-            }
-        }
-    } else {
-        REPORTER_ASSERT(r, startResult == SkCodec::kUnimplemented);
-    }
-
-    // The rest of this function tests decoding subsets, and will decode an arbitrary number of
-    // random subsets.
-    // Do not attempt to decode subsets of an image of only once pixel, since there is no
-    // meaningful subset.
-    if (size.width() * size.height() == 1) {
-        return;
-    }
-
-    SkRandom rand;
-    SkIRect subset;
-    SkCodec::Options opts;
-    opts.fSubset = &subset;
-    for (int i = 0; i < 5; i++) {
-        subset = generate_random_subset(&rand, size.width(), size.height());
-        SkASSERT(!subset.isEmpty());
-        const bool supported = codec->getValidSubset(&subset);
-        REPORTER_ASSERT(r, supported == supportsSubsetDecoding);
-
-        SkImageInfo subsetInfo = info.makeWH(subset.width(), subset.height());
-        SkBitmap bm;
-        bm.allocPixels(subsetInfo);
-        const SkCodec::Result result = codec->getPixels(bm.info(), bm.getPixels(), bm.rowBytes(),
-                                                        &opts, nullptr, nullptr);
-
-        if (supportsSubsetDecoding) {
-            REPORTER_ASSERT(r, result == expectedResult);
-            // Webp is the only codec that supports subsets, and it will have modified the subset
-            // to have even left/top.
-            REPORTER_ASSERT(r, SkIsAlign2(subset.fLeft) && SkIsAlign2(subset.fTop));
-        } else {
-            // No subsets will work.
-            REPORTER_ASSERT(r, result == SkCodec::kUnimplemented);
-        }
-    }
-
-    // SkAndroidCodec tests
-    if (supportsScanlineDecoding || supportsSubsetDecoding) {
-
-        SkAutoTDelete<SkStream> stream(resource(path));
-        if (!stream) {
-            SkDebugf("Missing resource '%s'\n", path);
-            return;
-        }
-
-        SkAutoTDelete<SkAndroidCodec> androidCodec(nullptr);
-        if (isIncomplete) {
-            size_t size = stream->getLength();
-            SkAutoTUnref<SkData> data((SkData::NewFromStream(stream, 2 * size / 3)));
-            androidCodec.reset(SkAndroidCodec::NewFromData(data));
-        } else {
-            androidCodec.reset(SkAndroidCodec::NewFromStream(stream.release()));
-        }
-        if (!androidCodec) {
-            ERRORF(r, "Unable to decode '%s'", path);
-            return;
-        }
-
-        SkBitmap bm;
-        SkMD5::Digest androidCodecDigest;
-        test_codec(r, androidCodec.get(), bm, info, size, expectedResult, &androidCodecDigest,
-                   &codecDigest);
-    }
-
-    if (!isIncomplete) {
-        // Test SkCodecImageGenerator
-        SkAutoTDelete<SkStream> stream(resource(path));
-        SkAutoTUnref<SkData> fullData(SkData::NewFromStream(stream, stream->getLength()));
-        SkAutoTDelete<SkImageGenerator> gen(SkCodecImageGenerator::NewFromEncodedCodec(fullData));
-        SkBitmap bm;
-        bm.allocPixels(info);
-        SkAutoLockPixels autoLockPixels(bm);
-        REPORTER_ASSERT(r, gen->getPixels(info, bm.getPixels(), bm.rowBytes()));
-        compare_to_good_digest(r, codecDigest, bm);
-
-        // Test using SkFrontBufferedStream, as Android does
-        SkStream* bufferedStream = SkFrontBufferedStream::Create(new SkMemoryStream(fullData),
-                SkCodec::MinBufferedBytesNeeded());
-        REPORTER_ASSERT(r, bufferedStream);
-        codec.reset(SkCodec::NewFromStream(bufferedStream));
-        REPORTER_ASSERT(r, codec);
-        if (codec) {
-            test_info(r, codec.get(), info, SkCodec::kSuccess, &codecDigest);
-        }
-    }
-
-    // If we've just tested incomplete decodes, let's run the same test again on full decodes.
-    if (isIncomplete) {
-        check(r, path, size, supportsScanlineDecoding, supportsSubsetDecoding, false);
-    }
-}
-
-DEF_TEST(Codec, r) {
-    // WBMP
-    check(r, "mandrill.wbmp", SkISize::Make(512, 512), true, false);
-
-    // WEBP
-    check(r, "baby_tux.webp", SkISize::Make(386, 395), false, true);
-    check(r, "color_wheel.webp", SkISize::Make(128, 128), false, true);
-    check(r, "yellow_rose.webp", SkISize::Make(400, 301), false, true);
-
-    // BMP
-    check(r, "randPixels.bmp", SkISize::Make(8, 8), true, false);
-    check(r, "rle.bmp", SkISize::Make(320, 240), true, false);
-
-    // ICO
-    // FIXME: We are not ready to test incomplete ICOs
-    // These two tests examine interestingly different behavior:
-    // Decodes an embedded BMP image
-    check(r, "color_wheel.ico", SkISize::Make(128, 128), true, false, false);
-    // Decodes an embedded PNG image
-    check(r, "google_chrome.ico", SkISize::Make(256, 256), true, false, false);
-
-    // GIF
-    // FIXME: We are not ready to test incomplete GIFs
-    check(r, "box.gif", SkISize::Make(200, 55), true, false, false);
-    check(r, "color_wheel.gif", SkISize::Make(128, 128), true, false, false);
-    // randPixels.gif is too small to test incomplete
-    check(r, "randPixels.gif", SkISize::Make(8, 8), true, false, false);
-
-    // JPG
-    check(r, "CMYK.jpg", SkISize::Make(642, 516), true, false);
-    check(r, "color_wheel.jpg", SkISize::Make(128, 128), true, false);
-    // grayscale.jpg is too small to test incomplete
-    check(r, "grayscale.jpg", SkISize::Make(128, 128), true, false, false);
-    check(r, "mandrill_512_q075.jpg", SkISize::Make(512, 512), true, false);
-    // randPixels.jpg is too small to test incomplete
-    check(r, "randPixels.jpg", SkISize::Make(8, 8), true, false, false);
-
-    // PNG
-    check(r, "arrow.png", SkISize::Make(187, 312), true, false, false);
-    check(r, "baby_tux.png", SkISize::Make(240, 246), true, false, false);
-    check(r, "color_wheel.png", SkISize::Make(128, 128), true, false, false);
-    check(r, "half-transparent-white-pixel.png", SkISize::Make(1, 1), true, false, false);
-    check(r, "mandrill_128.png", SkISize::Make(128, 128), true, false, false);
-    check(r, "mandrill_16.png", SkISize::Make(16, 16), true, false, false);
-    check(r, "mandrill_256.png", SkISize::Make(256, 256), true, false, false);
-    check(r, "mandrill_32.png", SkISize::Make(32, 32), true, false, false);
-    check(r, "mandrill_512.png", SkISize::Make(512, 512), true, false, false);
-    check(r, "mandrill_64.png", SkISize::Make(64, 64), true, false, false);
-    check(r, "plane.png", SkISize::Make(250, 126), true, false, false);
-    // FIXME: We are not ready to test incomplete interlaced pngs
-    check(r, "plane_interlaced.png", SkISize::Make(250, 126), true, false, false);
-    check(r, "randPixels.png", SkISize::Make(8, 8), true, false, false);
-    check(r, "yellow_rose.png", SkISize::Make(400, 301), true, false, false);
-
-    // RAW
-// Disable RAW tests for Win32.
-#if defined(SK_CODEC_DECODES_RAW) && (!defined(_WIN32))
-    check(r, "sample_1mp.dng", SkISize::Make(600, 338), false, false, false);
-    check(r, "sample_1mp_rotated.dng", SkISize::Make(600, 338), false, false, false);
-    check(r, "dng_with_preview.dng", SkISize::Make(600, 338), true, false, false);
-#endif
-}
-
-// Test interlaced PNG in stripes, similar to DM's kStripe_Mode
-DEF_TEST(Codec_stripes, r) {
-    const char * path = "plane_interlaced.png";
-    SkAutoTDelete<SkStream> stream(resource(path));
-    if (!stream) {
-        SkDebugf("Missing resource '%s'\n", path);
-    }
-
-    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(stream.release()));
-    REPORTER_ASSERT(r, codec);
-
-    if (!codec) {
-        return;
-    }
-
-    switch (codec->getScanlineOrder()) {
-        case SkCodec::kBottomUp_SkScanlineOrder:
-        case SkCodec::kOutOfOrder_SkScanlineOrder:
-            ERRORF(r, "This scanline order will not match the original.");
-            return;
-        default:
-            break;
-    }
-
-    // Baseline for what the image should look like, using N32.
-    const SkImageInfo info = codec->getInfo().makeColorType(kN32_SkColorType);
-
-    SkBitmap bm;
-    bm.allocPixels(info);
-    SkAutoLockPixels autoLockPixels(bm);
-    SkCodec::Result result = codec->getPixels(info, bm.getPixels(), bm.rowBytes());
-    REPORTER_ASSERT(r, result == SkCodec::kSuccess);
-
-    SkMD5::Digest digest;
-    md5(bm, &digest);
-
-    // Now decode in stripes
-    const int height = info.height();
-    const int numStripes = 4;
-    int stripeHeight;
-    int remainingLines;
-    SkTDivMod(height, numStripes, &stripeHeight, &remainingLines);
-
-    bm.eraseColor(SK_ColorYELLOW);
-
-    result = codec->startScanlineDecode(info);
-    REPORTER_ASSERT(r, result == SkCodec::kSuccess);
-
-    // Odd stripes
-    for (int i = 1; i < numStripes; i += 2) {
-        // Skip the even stripes
-        bool skipResult = codec->skipScanlines(stripeHeight);
-        REPORTER_ASSERT(r, skipResult);
-
-        int linesDecoded = codec->getScanlines(bm.getAddr(0, i * stripeHeight), stripeHeight,
-                                     bm.rowBytes());
-        REPORTER_ASSERT(r, linesDecoded == stripeHeight);
-    }
-
-    // Even stripes
-    result = codec->startScanlineDecode(info);
-    REPORTER_ASSERT(r, result == SkCodec::kSuccess);
-
-    for (int i = 0; i < numStripes; i += 2) {
-        int linesDecoded = codec->getScanlines(bm.getAddr(0, i * stripeHeight), stripeHeight,
-                                     bm.rowBytes());
-        REPORTER_ASSERT(r, linesDecoded == stripeHeight);
-
-        // Skip the odd stripes
-        if (i + 1 < numStripes) {
-            bool skipResult = codec->skipScanlines(stripeHeight);
-            REPORTER_ASSERT(r, skipResult);
-        }
-    }
-
-    // Remainder at the end
-    if (remainingLines > 0) {
-        result = codec->startScanlineDecode(info);
-        REPORTER_ASSERT(r, result == SkCodec::kSuccess);
-
-        bool skipResult = codec->skipScanlines(height - remainingLines);
-        REPORTER_ASSERT(r, skipResult);
-
-        int linesDecoded = codec->getScanlines(bm.getAddr(0, height - remainingLines),
-                                     remainingLines, bm.rowBytes());
-        REPORTER_ASSERT(r, linesDecoded == remainingLines);
-    }
-
-    compare_to_good_digest(r, digest, bm);
-}
-
-static void test_invalid_stream(skiatest::Reporter* r, const void* stream, size_t len) {
-    // Neither of these calls should return a codec. Bots should catch us if we leaked anything.
-    SkCodec* codec = SkCodec::NewFromStream(new SkMemoryStream(stream, len, false));
-    REPORTER_ASSERT(r, !codec);
-
-    SkAndroidCodec* androidCodec =
-            SkAndroidCodec::NewFromStream(new SkMemoryStream(stream, len, false));
-    REPORTER_ASSERT(r, !androidCodec);
-}
-
-// Ensure that SkCodec::NewFromStream handles freeing the passed in SkStream,
-// even on failure. Test some bad streams.
-DEF_TEST(Codec_leaks, r) {
-    // No codec should claim this as their format, so this tests SkCodec::NewFromStream.
-    const char nonSupportedStream[] = "hello world";
-    // The other strings should look like the beginning of a file type, so we'll call some
-    // internal version of NewFromStream, which must also delete the stream on failure.
-    const unsigned char emptyPng[] = { 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a };
-    const unsigned char emptyJpeg[] = { 0xFF, 0xD8, 0xFF };
-    const char emptyWebp[] = "RIFF1234WEBPVP";
-    const char emptyBmp[] = { 'B', 'M' };
-    const char emptyIco[] = { '\x00', '\x00', '\x01', '\x00' };
-    const char emptyGif[] = "GIFVER";
-
-    test_invalid_stream(r, nonSupportedStream, sizeof(nonSupportedStream));
-    test_invalid_stream(r, emptyPng, sizeof(emptyPng));
-    test_invalid_stream(r, emptyJpeg, sizeof(emptyJpeg));
-    test_invalid_stream(r, emptyWebp, sizeof(emptyWebp));
-    test_invalid_stream(r, emptyBmp, sizeof(emptyBmp));
-    test_invalid_stream(r, emptyIco, sizeof(emptyIco));
-    test_invalid_stream(r, emptyGif, sizeof(emptyGif));
-}
-
-DEF_TEST(Codec_null, r) {
-    // Attempting to create an SkCodec or an SkAndroidCodec with null should not
-    // crash.
-    SkCodec* codec = SkCodec::NewFromStream(nullptr);
-    REPORTER_ASSERT(r, !codec);
-
-    SkAndroidCodec* androidCodec = SkAndroidCodec::NewFromStream(nullptr);
-    REPORTER_ASSERT(r, !androidCodec);
-}
-
-static void test_dimensions(skiatest::Reporter* r, const char path[]) {
-    // Create the codec from the resource file
-    SkAutoTDelete<SkStream> stream(resource(path));
-    if (!stream) {
-        SkDebugf("Missing resource '%s'\n", path);
-        return;
-    }
-    SkAutoTDelete<SkAndroidCodec> codec(SkAndroidCodec::NewFromStream(stream.release()));
-    if (!codec) {
-        ERRORF(r, "Unable to create codec '%s'", path);
-        return;
-    }
-
-    // Check that the decode is successful for a variety of scales
-    for (int sampleSize = 1; sampleSize < 32; sampleSize++) {
-        // Scale the output dimensions
-        SkISize scaledDims = codec->getSampledDimensions(sampleSize);
-        SkImageInfo scaledInfo = codec->getInfo()
-                .makeWH(scaledDims.width(), scaledDims.height())
-                .makeColorType(kN32_SkColorType);
-
-        // Set up for the decode
-        size_t rowBytes = scaledDims.width() * sizeof(SkPMColor);
-        size_t totalBytes = scaledInfo.getSafeSize(rowBytes);
-        SkAutoTMalloc<SkPMColor> pixels(totalBytes);
-
-        SkAndroidCodec::AndroidOptions options;
-        options.fSampleSize = sampleSize;
-        SkCodec::Result result =
-                codec->getAndroidPixels(scaledInfo, pixels.get(), rowBytes, &options);
-        REPORTER_ASSERT(r, SkCodec::kSuccess == result);
-    }
-}
-
-// Ensure that onGetScaledDimensions returns valid image dimensions to use for decodes
-DEF_TEST(Codec_Dimensions, r) {
-    // JPG
-    test_dimensions(r, "CMYK.jpg");
-    test_dimensions(r, "color_wheel.jpg");
-    test_dimensions(r, "grayscale.jpg");
-    test_dimensions(r, "mandrill_512_q075.jpg");
-    test_dimensions(r, "randPixels.jpg");
-
-    // Decoding small images with very large scaling factors is a potential
-    // source of bugs and crashes.  We disable these tests in Gold because
-    // tiny images are not very useful to look at.
-    // Here we make sure that we do not crash or access illegal memory when
-    // performing scaled decodes on small images.
-    test_dimensions(r, "1x1.png");
-    test_dimensions(r, "2x2.png");
-    test_dimensions(r, "3x3.png");
-    test_dimensions(r, "3x1.png");
-    test_dimensions(r, "1x1.png");
-    test_dimensions(r, "16x1.png");
-    test_dimensions(r, "1x16.png");
-    test_dimensions(r, "mandrill_16.png");
-
-    // RAW
-// Disable RAW tests for Win32.
-#if defined(SK_CODEC_DECODES_RAW) && (!defined(_WIN32))
-    test_dimensions(r, "sample_1mp.dng");
-    test_dimensions(r, "sample_1mp_rotated.dng");
-    test_dimensions(r, "dng_with_preview.dng");
-#endif
-}
-
-static void test_invalid(skiatest::Reporter* r, const char path[]) {
-    SkAutoTDelete<SkStream> stream(resource(path));
-    if (!stream) {
-        SkDebugf("Missing resource '%s'\n", path);
-        return;
-    }
-    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(stream.release()));
-    REPORTER_ASSERT(r, nullptr == codec);
-}
-
-DEF_TEST(Codec_Empty, r) {
-    // Test images that should not be able to create a codec
-    test_invalid(r, "empty_images/zero-dims.gif");
-    test_invalid(r, "empty_images/zero-embedded.ico");
-    test_invalid(r, "empty_images/zero-width.bmp");
-    test_invalid(r, "empty_images/zero-height.bmp");
-    test_invalid(r, "empty_images/zero-width.jpg");
-    test_invalid(r, "empty_images/zero-height.jpg");
-    test_invalid(r, "empty_images/zero-width.png");
-    test_invalid(r, "empty_images/zero-height.png");
-    test_invalid(r, "empty_images/zero-width.wbmp");
-    test_invalid(r, "empty_images/zero-height.wbmp");
-    // This image is an ico with an embedded mask-bmp.  This is illegal.
-    test_invalid(r, "invalid_images/mask-bmp-ico.ico");
-}
-
-static void test_invalid_parameters(skiatest::Reporter* r, const char path[]) {
-    SkAutoTDelete<SkStream> stream(resource(path));
-    if (!stream) {
-        SkDebugf("Missing resource '%s'\n", path);
-        return;
-    }
-    SkAutoTDelete<SkCodec> decoder(SkCodec::NewFromStream(stream.release()));
-
-    // This should return kSuccess because kIndex8 is supported.
-    SkPMColor colorStorage[256];
-    int colorCount;
-    SkCodec::Result result = decoder->startScanlineDecode(
-        decoder->getInfo().makeColorType(kIndex_8_SkColorType), nullptr, colorStorage, &colorCount);
-    REPORTER_ASSERT(r, SkCodec::kSuccess == result);
-    // The rest of the test is uninteresting if kIndex8 is not supported
-    if (SkCodec::kSuccess != result) {
-        return;
-    }
-
-    // This should return kInvalidParameters because, in kIndex_8 mode, we must pass in a valid
-    // colorPtr and a valid colorCountPtr.
-    result = decoder->startScanlineDecode(
-        decoder->getInfo().makeColorType(kIndex_8_SkColorType), nullptr, nullptr, nullptr);
-    REPORTER_ASSERT(r, SkCodec::kInvalidParameters == result);
-    result = decoder->startScanlineDecode(
-        decoder->getInfo().makeColorType(kIndex_8_SkColorType));
-    REPORTER_ASSERT(r, SkCodec::kInvalidParameters == result);
-}
-
-DEF_TEST(Codec_Params, r) {
-    test_invalid_parameters(r, "index8.png");
-    test_invalid_parameters(r, "mandrill.wbmp");
-}
-
-static void codex_test_write_fn(png_structp png_ptr, png_bytep data, png_size_t len) {
-    SkWStream* sk_stream = (SkWStream*)png_get_io_ptr(png_ptr);
-    if (!sk_stream->write(data, len)) {
-        png_error(png_ptr, "sk_write_fn Error!");
-    }
-}
-
-#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
-DEF_TEST(Codec_pngChunkReader, r) {
-    // Create a dummy bitmap. Use unpremul RGBA for libpng.
-    SkBitmap bm;
-    const int w = 1;
-    const int h = 1;
-    const SkImageInfo bmInfo = SkImageInfo::Make(w, h, kRGBA_8888_SkColorType,
-                                                 kUnpremul_SkAlphaType);
-    bm.setInfo(bmInfo);
-    bm.allocPixels();
-    bm.eraseColor(SK_ColorBLUE);
-    SkMD5::Digest goodDigest;
-    md5(bm, &goodDigest);
-
-    // Write to a png file.
-    png_structp png = png_create_write_struct(PNG_LIBPNG_VER_STRING, nullptr, nullptr, nullptr);
-    REPORTER_ASSERT(r, png);
-    if (!png) {
-        return;
-    }
-
-    png_infop info = png_create_info_struct(png);
-    REPORTER_ASSERT(r, info);
-    if (!info) {
-        png_destroy_write_struct(&png, nullptr);
-        return;
-    }
-
-    if (setjmp(png_jmpbuf(png))) {
-        ERRORF(r, "failed writing png");
-        png_destroy_write_struct(&png, &info);
-        return;
-    }
-
-    SkDynamicMemoryWStream wStream;
-    png_set_write_fn(png, (void*) (&wStream), codex_test_write_fn, nullptr);
-
-    png_set_IHDR(png, info, (png_uint_32)w, (png_uint_32)h, 8,
-                 PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE,
-                 PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
-
-    // Create some chunks that match the Android framework's use.
-    static png_unknown_chunk gUnknowns[] = {
-        { "npOl", (png_byte*)"outline", sizeof("outline"), PNG_HAVE_IHDR },
-        { "npLb", (png_byte*)"layoutBounds", sizeof("layoutBounds"), PNG_HAVE_IHDR },
-        { "npTc", (png_byte*)"ninePatchData", sizeof("ninePatchData"), PNG_HAVE_IHDR },
-    };
-
-    png_set_keep_unknown_chunks(png, PNG_HANDLE_CHUNK_ALWAYS, (png_byte*)"npOl\0npLb\0npTc\0", 3);
-    png_set_unknown_chunks(png, info, gUnknowns, SK_ARRAY_COUNT(gUnknowns));
-#if PNG_LIBPNG_VER < 10600
-    /* Deal with unknown chunk location bug in 1.5.x and earlier */
-    png_set_unknown_chunk_location(png, info, 0, PNG_HAVE_IHDR);
-    png_set_unknown_chunk_location(png, info, 1, PNG_HAVE_IHDR);
-#endif
-
-    png_write_info(png, info);
-
-    for (int j = 0; j < h; j++) {
-        png_bytep row = (png_bytep)(bm.getAddr(0, j));
-        png_write_rows(png, &row, 1);
-    }
-    png_write_end(png, info);
-    png_destroy_write_struct(&png, &info);
-
-    class ChunkReader : public SkPngChunkReader {
-    public:
-        ChunkReader(skiatest::Reporter* r)
-            : fReporter(r)
-        {
-            this->reset();
-        }
-
-        bool readChunk(const char tag[], const void* data, size_t length) override {
-            for (size_t i = 0; i < SK_ARRAY_COUNT(gUnknowns); ++i) {
-                if (!strcmp(tag, (const char*) gUnknowns[i].name)) {
-                    // Tag matches. This should have been the first time we see it.
-                    REPORTER_ASSERT(fReporter, !fSeen[i]);
-                    fSeen[i] = true;
-
-                    // Data and length should match
-                    REPORTER_ASSERT(fReporter, length == gUnknowns[i].size);
-                    REPORTER_ASSERT(fReporter, !strcmp((const char*) data,
-                                                       (const char*) gUnknowns[i].data));
-                    return true;
-                }
-            }
-            ERRORF(fReporter, "Saw an unexpected unknown chunk.");
-            return true;
-        }
-
-        bool allHaveBeenSeen() {
-            bool ret = true;
-            for (auto seen : fSeen) {
-                ret &= seen;
-            }
-            return ret;
-        }
-
-        void reset() {
-            sk_bzero(fSeen, sizeof(fSeen));
-        }
-
-    private:
-        skiatest::Reporter* fReporter;  // Unowned
-        bool fSeen[3];
-    };
-
-    ChunkReader chunkReader(r);
-
-    // Now read the file with SkCodec.
-    SkAutoTUnref<SkData> data(wStream.copyToData());
-    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(data, &chunkReader));
-    REPORTER_ASSERT(r, codec);
-    if (!codec) {
-        return;
-    }
-
-    // Now compare to the original.
-    SkBitmap decodedBm;
-    decodedBm.setInfo(codec->getInfo());
-    decodedBm.allocPixels();
-    SkCodec::Result result = codec->getPixels(codec->getInfo(), decodedBm.getPixels(),
-                                              decodedBm.rowBytes());
-    REPORTER_ASSERT(r, SkCodec::kSuccess == result);
-
-    if (decodedBm.colorType() != bm.colorType()) {
-        SkBitmap tmp;
-        bool success = decodedBm.copyTo(&tmp, bm.colorType());
-        REPORTER_ASSERT(r, success);
-        if (!success) {
-            return;
-        }
-
-        tmp.swap(decodedBm);
-    }
-
-    compare_to_good_digest(r, goodDigest, decodedBm);
-    REPORTER_ASSERT(r, chunkReader.allHaveBeenSeen());
-
-    // Decoding again will read the chunks again.
-    chunkReader.reset();
-    REPORTER_ASSERT(r, !chunkReader.allHaveBeenSeen());
-    result = codec->getPixels(codec->getInfo(), decodedBm.getPixels(), decodedBm.rowBytes());
-    REPORTER_ASSERT(r, SkCodec::kSuccess == result);
-    REPORTER_ASSERT(r, chunkReader.allHaveBeenSeen());
-}
-#endif // PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
-
-// Stream that can only peek up to a limit
-class LimitedPeekingMemStream : public SkStream {
-public:
-    LimitedPeekingMemStream(SkData* data, size_t limit)
-        : fStream(data)
-        , fLimit(limit) {}
-
-    size_t peek(void* buf, size_t bytes) const override {
-        return fStream.peek(buf, SkTMin(bytes, fLimit));
-    }
-    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 false;
-    }
-private:
-    SkMemoryStream fStream;
-    const size_t   fLimit;
-};
-
-// Stream that is not an asset stream (!hasPosition() or !hasLength())
-class NotAssetMemStream : public SkStream {
-public:
-    NotAssetMemStream(SkData* data) : fStream(data) {}
-
-    bool hasPosition() const override {
-        return false;
-    }
-
-    bool hasLength() const override {
-        return false;
-    }
-
-    size_t peek(void* buf, size_t bytes) const override {
-        return fStream.peek(buf, bytes);
-    }
-    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:
-    SkMemoryStream fStream;
-};
-
-// Disable RAW tests for Win32.
-#if defined(SK_CODEC_DECODES_RAW) && (!defined(_WIN32))
-// Test that the RawCodec works also for not asset stream. This will test the code path using
-// SkRawBufferedStream instead of SkRawAssetStream.
-DEF_TEST(Codec_raw_notseekable, r) {
-    const char* path = "dng_with_preview.dng";
-    SkString fullPath(GetResourcePath(path));
-    SkAutoTUnref<SkData> data(SkData::NewFromFileName(fullPath.c_str()));
-    if (!data) {
-        SkDebugf("Missing resource '%s'\n", path);
-        return;
-    }
-
-    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(new NotAssetMemStream(data)));
-    REPORTER_ASSERT(r, codec);
-
-    test_info(r, codec.get(), codec->getInfo(), SkCodec::kSuccess, nullptr);
-}
-#endif
-
-// Test that even if webp_parse_header fails to peek enough, it will fall back to read()
-// + rewind() and succeed.
-DEF_TEST(Codec_webp_peek, r) {
-    const char* path = "baby_tux.webp";
-    SkString fullPath(GetResourcePath(path));
-    auto data = SkData::MakeFromFileName(fullPath.c_str());
-    if (!data) {
-        SkDebugf("Missing resource '%s'\n", path);
-        return;
-    }
-
-    // The limit is less than webp needs to peek or read.
-    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(
-                                 new LimitedPeekingMemStream(data.get(), 25)));
-    REPORTER_ASSERT(r, codec);
-
-    test_info(r, codec.get(), codec->getInfo(), SkCodec::kSuccess, nullptr);
-
-    // Similarly, a stream which does not peek should still succeed.
-    codec.reset(SkCodec::NewFromStream(new LimitedPeekingMemStream(data.get(), 0)));
-    REPORTER_ASSERT(r, codec);
-
-    test_info(r, codec.get(), codec->getInfo(), SkCodec::kSuccess, nullptr);
-}
-
-// SkCodec's wbmp decoder was initially unnecessarily restrictive.
-// It required the second byte to be zero. The wbmp specification allows
-// a couple of bits to be 1 (so long as they do not overlap with 0x9F).
-// Test that SkCodec now supports an image with these bits set.
-DEF_TEST(Codec_wbmp, r) {
-    const char* path = "mandrill.wbmp";
-    SkAutoTDelete<SkStream> stream(resource(path));
-    if (!stream) {
-        SkDebugf("Missing resource '%s'\n", path);
-        return;
-    }
-
-    // Modify the stream to contain a second byte with some bits set.
-    auto data = SkCopyStreamToData(stream);
-    uint8_t* writeableData = static_cast<uint8_t*>(data->writable_data());
-    writeableData[1] = static_cast<uint8_t>(~0x9F);
-
-    // SkCodec should support this.
-    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(data.get()));
-    REPORTER_ASSERT(r, codec);
-    if (!codec) {
-        return;
-    }
-    test_info(r, codec.get(), codec->getInfo(), SkCodec::kSuccess, nullptr);
-}
-
-// wbmp images have a header that can be arbitrarily large, depending on the
-// size of the image. We cap the size at 65535, meaning we only need to look at
-// 8 bytes to determine whether we can read the image. This is important
-// because SkCodec only passes 14 bytes to SkWbmpCodec to determine whether the
-// image is a wbmp.
-DEF_TEST(Codec_wbmp_max_size, r) {
-    const unsigned char maxSizeWbmp[] = { 0x00, 0x00,           // Header
-                                          0x83, 0xFF, 0x7F,     // W: 65535
-                                          0x83, 0xFF, 0x7F };   // H: 65535
-    SkAutoTDelete<SkStream> stream(new SkMemoryStream(maxSizeWbmp, sizeof(maxSizeWbmp), false));
-    SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(stream.release()));
-
-    REPORTER_ASSERT(r, codec);
-    if (!codec) return;
-
-    REPORTER_ASSERT(r, codec->getInfo().width() == 65535);
-    REPORTER_ASSERT(r, codec->getInfo().height() == 65535);
-
-    // Now test an image which is too big. Any image with a larger header (i.e.
-    // has bigger width/height) is also too big.
-    const unsigned char tooBigWbmp[] = { 0x00, 0x00,           // Header
-                                         0x84, 0x80, 0x00,     // W: 65536
-                                         0x84, 0x80, 0x00 };   // H: 65536
-    stream.reset(new SkMemoryStream(tooBigWbmp, sizeof(tooBigWbmp), false));
-    codec.reset(SkCodec::NewFromStream(stream.release()));
-
-    REPORTER_ASSERT(r, !codec);
-}