42943c8aa9
BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2333713002 Review-Url: https://codereview.chromium.org/2333713002
242 lines
9.5 KiB
C++
242 lines
9.5 KiB
C++
/*
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* Copyright 2014 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 "SkCanvas.h"
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#include "SkData.h"
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#include "SkDocument.h"
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#include "SkImageGenerator.h"
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#include "SkJpegInfo.h"
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#include "SkStream.h"
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#include "Resources.h"
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#include "Test.h"
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// Returned bitmap is lazy. Only lazy bitmaps hold onto the original data.
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static SkBitmap bitmap_from_data(SkData* data) {
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SkASSERT(data);
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SkBitmap bm;
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SkDEPRECATED_InstallDiscardablePixelRef(data, &bm);
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return bm;
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}
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static bool is_subset_of(SkData* smaller, SkData* larger) {
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SkASSERT(smaller && larger);
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if (smaller->size() > larger->size()) {
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return false;
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}
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size_t size = smaller->size();
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size_t size_diff = larger->size() - size;
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for (size_t i = 0; i <= size_diff; ++i) {
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if (0 == memcmp(larger->bytes() + i, smaller->bytes(), size)) {
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return true;
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}
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}
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return false;
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}
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static sk_sp<SkData> load_resource(
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skiatest::Reporter* r, const char* test, const char* filename) {
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SkString path(GetResourcePath(filename));
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sk_sp<SkData> data(SkData::MakeFromFileName(path.c_str()));
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if (!data) {
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INFOF(r, "\n%s: Resource '%s' can not be found.\n",
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test, filename);
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}
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return data; // May return nullptr.
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}
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/**
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* Test that for Jpeg files that use the JFIF colorspace, they are
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* directly embedded into the PDF (without re-encoding) when that
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* makes sense.
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*/
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DEF_TEST(SkPDF_JpegEmbedTest, r) {
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REQUIRE_PDF_DOCUMENT(SkPDF_JpegEmbedTest, r);
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const char test[] = "SkPDF_JpegEmbedTest";
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sk_sp<SkData> mandrillData(load_resource(r, test, "mandrill_512_q075.jpg"));
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sk_sp<SkData> cmykData(load_resource(r, test, "CMYK.jpg"));
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if (!mandrillData || !cmykData) {
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return;
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}
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////////////////////////////////////////////////////////////////////////////
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SkDynamicMemoryWStream pdf;
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sk_sp<SkDocument> document(SkDocument::MakePDF(&pdf));
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SkCanvas* canvas = document->beginPage(642, 1028);
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canvas->clear(SK_ColorLTGRAY);
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SkBitmap bm1(bitmap_from_data(mandrillData.get()));
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canvas->drawBitmap(bm1, 65.0, 0.0, nullptr);
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SkBitmap bm2(bitmap_from_data(cmykData.get()));
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canvas->drawBitmap(bm2, 0.0, 512.0, nullptr);
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canvas->flush();
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document->endPage();
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document->close();
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sk_sp<SkData> pdfData(pdf.detachAsData());
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SkASSERT(pdfData);
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REPORTER_ASSERT(r, is_subset_of(mandrillData.get(), pdfData.get()));
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// This JPEG uses a nonstandard colorspace - it can not be
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// embedded into the PDF directly.
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REPORTER_ASSERT(r, !is_subset_of(cmykData.get(), pdfData.get()));
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////////////////////////////////////////////////////////////////////////////
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pdf.reset();
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document = SkDocument::MakePDF(&pdf);
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canvas = document->beginPage(642, 1028);
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canvas->clear(SK_ColorLTGRAY);
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sk_sp<SkImage> im1(SkImage::MakeFromEncoded(mandrillData));
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canvas->drawImage(im1.get(), 65.0, 0.0, nullptr);
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sk_sp<SkImage> im2(SkImage::MakeFromEncoded(cmykData));
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canvas->drawImage(im2.get(), 0.0, 512.0, nullptr);
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canvas->flush();
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document->endPage();
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document->close();
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pdfData = pdf.detachAsData();
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SkASSERT(pdfData);
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REPORTER_ASSERT(r, is_subset_of(mandrillData.get(), pdfData.get()));
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// This JPEG uses a nonstandard colorspace - it can not be
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// embedded into the PDF directly.
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REPORTER_ASSERT(r, !is_subset_of(cmykData.get(), pdfData.get()));
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}
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DEF_TEST(SkPDF_JpegIdentification, r) {
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static struct {
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const char* path;
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bool isJfif;
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SkJFIFInfo::Type type;
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} kTests[] = {{"CMYK.jpg", false, SkJFIFInfo::kGrayscale},
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{"color_wheel.jpg", true, SkJFIFInfo::kYCbCr},
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{"grayscale.jpg", true, SkJFIFInfo::kGrayscale},
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{"mandrill_512_q075.jpg", true, SkJFIFInfo::kYCbCr},
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{"randPixels.jpg", true, SkJFIFInfo::kYCbCr}};
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for (size_t i = 0; i < SK_ARRAY_COUNT(kTests); ++i) {
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sk_sp<SkData> data(load_resource(r, "JpegIdentification", kTests[i].path));
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if (!data) {
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continue;
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}
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SkJFIFInfo info;
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bool isJfif = SkIsJFIF(data.get(), &info);
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if (isJfif != kTests[i].isJfif) {
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ERRORF(r, "%s failed isJfif test", kTests[i].path);
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continue;
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}
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if (!isJfif) {
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continue; // not applicable
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}
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if (kTests[i].type != info.fType) {
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ERRORF(r, "%s failed jfif type test", kTests[i].path);
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continue;
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}
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INFOF(r, "\nJpegIdentification: %s [%d x %d]\n", kTests[i].path,
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info.fSize.width(), info.fSize.height());
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}
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// Test several malformed jpegs.
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SkJFIFInfo info;
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{
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static const char goodJpeg[] =
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"\377\330\377\340\0\20JFIF\0\1\1\0\0\1\0\1\0\0\377\333\0C\0\10\6\6\7"
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"\6\5\10\7\7\7\t\t\10\n\14\24\r\14\13\13\14\31\22\23\17\24\35\32\37"
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"\36\35\32\34\34 $.' \",#\34\34(7),01444\37'9=82<.342\377\333\0C\1\t"
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"\t\t\14\13\14\30\r\r\0302!\34!222222222222222222222222222222222222"
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"22222222222222\377\300\0\21\10\2\0\2\0\3\1\"\0\2\21\1\3\21\001";
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size_t goodJpegLength = 177;
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auto data = SkData::MakeWithoutCopy(goodJpeg, goodJpegLength);
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REPORTER_ASSERT(r, SkIsJFIF(data.get(), &info));
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REPORTER_ASSERT(r, info.fSize == SkISize::Make(512, 512));
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REPORTER_ASSERT(r, info.fType == SkJFIFInfo::kYCbCr);
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// Not long enough to read first (SOI) segment marker.
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data = SkData::MakeWithoutCopy(goodJpeg, 1);
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REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info));
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// Not long enough to read second segment (APP0) marker.
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data = SkData::MakeWithoutCopy(goodJpeg, 3);
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REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info));
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// Not long enough to read second segment's length.
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data = SkData::MakeWithoutCopy(goodJpeg, 5);
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REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info));
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// APP0 segment is truncated.
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data = SkData::MakeWithoutCopy(goodJpeg, 7);
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REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info));
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// Missing SOF segment.
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data = SkData::MakeWithoutCopy(goodJpeg, 89);
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REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info));
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}
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{
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// JFIF tag missing.
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static const char jpeg[] =
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"\377\330\377\340\0\20JFIX\0\1\1\0\0\1\0\1\0\0\377\333\0C\0\10\6\6\7"
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"\6\5\10\7\7\7\t\t\10\n\14\24\r\14\13\13\14\31\22\23\17\24\35\32\37"
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"\36\35\32\34\34 $.' \",#\34\34(7),01444\37'9=82<.342\377\333\0C\1\t"
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"\t\t\14\13\14\30\r\r\0302!\34!222222222222222222222222222222222222"
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"22222222222222\377\300\0\21\10\2\0\2\0\3\1\"\0\2\21\1\3\21\001";
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size_t jpegLength = 177;
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auto data = SkData::MakeWithoutCopy(jpeg, jpegLength);
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REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info));
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}
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{
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// APP0 segment short (byte 6 changed).
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static const char jpeg[] =
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"\377\330\377\340\0\5JFIF\0\1\1\0\0\1\0\1\0\0\377\333\0C\0\10\6\6\7"
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"\6\5\10\7\7\7\t\t\10\n\14\24\r\14\13\13\14\31\22\23\17\24\35\32\37"
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"\36\35\32\34\34 $.' \",#\34\34(7),01444\37'9=82<.342\377\333\0C\1\t"
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"\t\t\14\13\14\30\r\r\0302!\34!222222222222222222222222222222222222"
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"22222222222222\377\300\0\21\10\2\0\2\0\3\1\"\0\2\21\1\3\21\001";
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size_t jpegLength = 177;
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auto data = SkData::MakeWithoutCopy(jpeg, jpegLength);
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REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info));
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}
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{
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// SOF segment short. ('\21' replaced with '\5')
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static const char jpeg[] =
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"\377\330\377\340\0\20JFIF\0\1\1\0\0\1\0\1\0\0\377\333\0C\0\10\6\6\7"
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"\6\5\10\7\7\7\t\t\10\n\14\24\r\14\13\13\14\31\22\23\17\24\35\32\37"
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"\36\35\32\34\34 $.' \",#\34\34(7),01444\37'9=82<.342\377\333\0C\1\t"
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"\t\t\14\13\14\30\r\r\0302!\34!222222222222222222222222222222222222"
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"22222222222222\377\300\0\5\10\2\0\2\0\3\1\"\0\2\21\1\3\21\001";
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size_t jpegLength = 177;
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auto data = SkData::MakeWithoutCopy(jpeg, jpegLength);
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REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info));
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}
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{
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// Unsupported 12-bit components. ('\10' replaced with '\14')
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static const char jpeg[] =
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"\377\330\377\340\0\20JFIF\0\1\1\0\0\1\0\1\0\0\377\333\0C\0\10\6\6\7"
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"\6\5\10\7\7\7\t\t\10\n\14\24\r\14\13\13\14\31\22\23\17\24\35\32\37"
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"\36\35\32\34\34 $.' \",#\34\34(7),01444\37'9=82<.342\377\333\0C\1\t"
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"\t\t\14\13\14\30\r\r\0302!\34!222222222222222222222222222222222222"
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"22222222222222\377\300\0\21\14\2\0\2\0\3\1\"\0\2\21\1\3\21\001";
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size_t jpegLength = 177;
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auto data = SkData::MakeWithoutCopy(jpeg, jpegLength);
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REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info));
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}
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{
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// Two color channels. ('\3' replaced with '\2')
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static const char jpeg[] =
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"\377\330\377\340\0\20JFIF\0\1\1\0\0\1\0\1\0\0\377\333\0C\0\10\6\6\7"
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"\6\5\10\7\7\7\t\t\10\n\14\24\r\14\13\13\14\31\22\23\17\24\35\32\37"
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"\36\35\32\34\34 $.' \",#\34\34(7),01444\37'9=82<.342\377\333\0C\1\t"
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"\t\t\14\13\14\30\r\r\0302!\34!222222222222222222222222222222222222"
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"22222222222222\377\300\0\21\10\2\0\2\0\2\1\"\0\2\21\1\3\21\001";
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size_t jpegLength = 177;
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auto data = SkData::MakeWithoutCopy(jpeg, jpegLength);
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REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info));
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}
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}
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