| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkCanvas.h" |
| #include "SkData.h" |
| #include "SkDocument.h" |
| #include "SkImageGenerator.h" |
| #include "SkStream.h" |
| |
| #include "Resources.h" |
| #include "Test.h" |
| |
| static bool is_subset_of(SkData* smaller, SkData* larger) { |
| SkASSERT(smaller && larger); |
| if (smaller->size() > larger->size()) { |
| return false; |
| } |
| size_t size = smaller->size(); |
| size_t size_diff = larger->size() - size; |
| for (size_t i = 0; i <= size_diff; ++i) { |
| if (0 == memcmp(larger->bytes() + i, smaller->bytes(), size)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| |
| static sk_sp<SkData> load_resource( |
| skiatest::Reporter* r, const char* test, const char* filename) { |
| sk_sp<SkData> data = GetResourceAsData(filename); |
| if (!data) { |
| INFOF(r, "\n%s: Resource '%s' can not be found.\n", |
| test, filename); |
| } |
| return data; // May return nullptr. |
| } |
| |
| /** |
| * Test that for Jpeg files that use the JFIF colorspace, they are |
| * directly embedded into the PDF (without re-encoding) when that |
| * makes sense. |
| */ |
| DEF_TEST(SkPDF_JpegEmbedTest, r) { |
| REQUIRE_PDF_DOCUMENT(SkPDF_JpegEmbedTest, r); |
| const char test[] = "SkPDF_JpegEmbedTest"; |
| sk_sp<SkData> mandrillData(load_resource(r, test, "images/mandrill_512_q075.jpg")); |
| sk_sp<SkData> cmykData(load_resource(r, test, "images/CMYK.jpg")); |
| if (!mandrillData || !cmykData) { |
| return; |
| } |
| //////////////////////////////////////////////////////////////////////////// |
| SkDynamicMemoryWStream pdf; |
| sk_sp<SkDocument> document(SkDocument::MakePDF(&pdf)); |
| SkCanvas* canvas = document->beginPage(642, 1028); |
| |
| canvas->clear(SK_ColorLTGRAY); |
| |
| sk_sp<SkImage> im1(SkImage::MakeFromEncoded(mandrillData)); |
| canvas->drawImage(im1.get(), 65.0, 0.0, nullptr); |
| sk_sp<SkImage> im2(SkImage::MakeFromEncoded(cmykData)); |
| canvas->drawImage(im2.get(), 0.0, 512.0, nullptr); |
| |
| canvas->flush(); |
| document->endPage(); |
| document->close(); |
| sk_sp<SkData> pdfData = pdf.detachAsData(); |
| SkASSERT(pdfData); |
| |
| REPORTER_ASSERT(r, is_subset_of(mandrillData.get(), pdfData.get())); |
| |
| // This JPEG uses a nonstandard colorspace - it can not be |
| // embedded into the PDF directly. |
| REPORTER_ASSERT(r, !is_subset_of(cmykData.get(), pdfData.get())); |
| } |
| |
| #ifdef SK_SUPPORT_PDF |
| |
| #include "SkJpegInfo.h" |
| |
| DEF_TEST(SkPDF_JpegIdentification, r) { |
| static struct { |
| const char* path; |
| bool isJfif; |
| SkJFIFInfo::Type type; |
| } kTests[] = {{"images/CMYK.jpg", false, SkJFIFInfo::kGrayscale}, |
| {"images/color_wheel.jpg", true, SkJFIFInfo::kYCbCr}, |
| {"images/grayscale.jpg", true, SkJFIFInfo::kGrayscale}, |
| {"images/mandrill_512_q075.jpg", true, SkJFIFInfo::kYCbCr}, |
| {"images/randPixels.jpg", true, SkJFIFInfo::kYCbCr}}; |
| for (size_t i = 0; i < SK_ARRAY_COUNT(kTests); ++i) { |
| sk_sp<SkData> data(load_resource(r, "JpegIdentification", kTests[i].path)); |
| if (!data) { |
| continue; |
| } |
| SkJFIFInfo info; |
| bool isJfif = SkIsJFIF(data.get(), &info); |
| if (isJfif != kTests[i].isJfif) { |
| ERRORF(r, "%s failed isJfif test", kTests[i].path); |
| continue; |
| } |
| if (!isJfif) { |
| continue; // not applicable |
| } |
| if (kTests[i].type != info.fType) { |
| ERRORF(r, "%s failed jfif type test", kTests[i].path); |
| continue; |
| } |
| INFOF(r, "\nJpegIdentification: %s [%d x %d]\n", kTests[i].path, |
| info.fSize.width(), info.fSize.height()); |
| } |
| |
| // Test several malformed jpegs. |
| SkJFIFInfo info; |
| { |
| static const char goodJpeg[] = |
| "\377\330\377\340\0\20JFIF\0\1\1\0\0\1\0\1\0\0\377\333\0C\0\10\6\6\7" |
| "\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" |
| "\36\35\32\34\34 $.' \",#\34\34(7),01444\37'9=82<.342\377\333\0C\1\t" |
| "\t\t\14\13\14\30\r\r\0302!\34!222222222222222222222222222222222222" |
| "22222222222222\377\300\0\21\10\2\0\2\0\3\1\"\0\2\21\1\3\21\001"; |
| size_t goodJpegLength = 177; |
| auto data = SkData::MakeWithoutCopy(goodJpeg, goodJpegLength); |
| REPORTER_ASSERT(r, SkIsJFIF(data.get(), &info)); |
| REPORTER_ASSERT(r, info.fSize == SkISize::Make(512, 512)); |
| REPORTER_ASSERT(r, info.fType == SkJFIFInfo::kYCbCr); |
| |
| // Not long enough to read first (SOI) segment marker. |
| data = SkData::MakeWithoutCopy(goodJpeg, 1); |
| REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info)); |
| |
| // Not long enough to read second segment (APP0) marker. |
| data = SkData::MakeWithoutCopy(goodJpeg, 3); |
| REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info)); |
| |
| // Not long enough to read second segment's length. |
| data = SkData::MakeWithoutCopy(goodJpeg, 5); |
| REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info)); |
| |
| // APP0 segment is truncated. |
| data = SkData::MakeWithoutCopy(goodJpeg, 7); |
| REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info)); |
| |
| // Missing SOF segment. |
| data = SkData::MakeWithoutCopy(goodJpeg, 89); |
| REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info)); |
| } |
| { |
| // JFIF tag missing. |
| static const char jpeg[] = |
| "\377\330\377\340\0\20JFIX\0\1\1\0\0\1\0\1\0\0\377\333\0C\0\10\6\6\7" |
| "\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" |
| "\36\35\32\34\34 $.' \",#\34\34(7),01444\37'9=82<.342\377\333\0C\1\t" |
| "\t\t\14\13\14\30\r\r\0302!\34!222222222222222222222222222222222222" |
| "22222222222222\377\300\0\21\10\2\0\2\0\3\1\"\0\2\21\1\3\21\001"; |
| size_t jpegLength = 177; |
| auto data = SkData::MakeWithoutCopy(jpeg, jpegLength); |
| REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info)); |
| } |
| { |
| // APP0 segment short (byte 6 changed). |
| static const char jpeg[] = |
| "\377\330\377\340\0\5JFIF\0\1\1\0\0\1\0\1\0\0\377\333\0C\0\10\6\6\7" |
| "\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" |
| "\36\35\32\34\34 $.' \",#\34\34(7),01444\37'9=82<.342\377\333\0C\1\t" |
| "\t\t\14\13\14\30\r\r\0302!\34!222222222222222222222222222222222222" |
| "22222222222222\377\300\0\21\10\2\0\2\0\3\1\"\0\2\21\1\3\21\001"; |
| size_t jpegLength = 177; |
| auto data = SkData::MakeWithoutCopy(jpeg, jpegLength); |
| REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info)); |
| } |
| { |
| // SOF segment short. ('\21' replaced with '\5') |
| static const char jpeg[] = |
| "\377\330\377\340\0\20JFIF\0\1\1\0\0\1\0\1\0\0\377\333\0C\0\10\6\6\7" |
| "\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" |
| "\36\35\32\34\34 $.' \",#\34\34(7),01444\37'9=82<.342\377\333\0C\1\t" |
| "\t\t\14\13\14\30\r\r\0302!\34!222222222222222222222222222222222222" |
| "22222222222222\377\300\0\5\10\2\0\2\0\3\1\"\0\2\21\1\3\21\001"; |
| size_t jpegLength = 177; |
| auto data = SkData::MakeWithoutCopy(jpeg, jpegLength); |
| REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info)); |
| } |
| { |
| // Unsupported 12-bit components. ('\10' replaced with '\14') |
| static const char jpeg[] = |
| "\377\330\377\340\0\20JFIF\0\1\1\0\0\1\0\1\0\0\377\333\0C\0\10\6\6\7" |
| "\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" |
| "\36\35\32\34\34 $.' \",#\34\34(7),01444\37'9=82<.342\377\333\0C\1\t" |
| "\t\t\14\13\14\30\r\r\0302!\34!222222222222222222222222222222222222" |
| "22222222222222\377\300\0\21\14\2\0\2\0\3\1\"\0\2\21\1\3\21\001"; |
| size_t jpegLength = 177; |
| auto data = SkData::MakeWithoutCopy(jpeg, jpegLength); |
| REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info)); |
| } |
| { |
| // Two color channels. ('\3' replaced with '\2') |
| static const char jpeg[] = |
| "\377\330\377\340\0\20JFIF\0\1\1\0\0\1\0\1\0\0\377\333\0C\0\10\6\6\7" |
| "\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" |
| "\36\35\32\34\34 $.' \",#\34\34(7),01444\37'9=82<.342\377\333\0C\1\t" |
| "\t\t\14\13\14\30\r\r\0302!\34!222222222222222222222222222222222222" |
| "22222222222222\377\300\0\21\10\2\0\2\0\2\1\"\0\2\21\1\3\21\001"; |
| size_t jpegLength = 177; |
| auto data = SkData::MakeWithoutCopy(jpeg, jpegLength); |
| REPORTER_ASSERT(r, !SkIsJFIF(data.get(), &info)); |
| } |
| } |
| #endif |
