100 lines
2.9 KiB
C++
100 lines
2.9 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 "SkDocument.h"
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#include "SkCanvas.h"
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#include "SkImageGenerator.h"
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#include "SkData.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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SkInstallDiscardablePixelRef(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 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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SkData* data = SkData::NewFromFileName(path.c_str());
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if (!data && r->verbose()) {
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SkDebugf("\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 NULL.
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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(PDFJpegEmbedTest, r) {
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const char test[] = "PDFJpegEmbedTest";
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SkAutoTUnref<SkData> mandrillData(
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load_resource(r, test, "mandrill_512_q075.jpg"));
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SkAutoTUnref<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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SkDynamicMemoryWStream pdf;
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SkAutoTUnref<SkDocument> document(SkDocument::CreatePDF(&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));
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canvas->drawBitmap(bm1, 65.0, 0.0, NULL);
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SkBitmap bm2(bitmap_from_data(cmykData));
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canvas->drawBitmap(bm2, 0.0, 512.0, NULL);
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canvas->flush();
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document->endPage();
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document->close();
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SkAutoTUnref<SkData> pdfData(pdf.copyToData());
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SkASSERT(pdfData);
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pdf.reset();
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// Test disabled, waiting on resolution to http://skbug.com/3180
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// REPORTER_ASSERT(r, is_subset_of(mandrillData, pdfData));
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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, pdfData));
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// The following is for debugging purposes only.
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const char* outputPath = getenv("SKIA_TESTS_PDF_JPEG_EMBED_OUTPUT_PATH");
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if (outputPath) {
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SkFILEWStream output(outputPath);
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if (output.isValid()) {
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output.write(pdfData->data(), pdfData->size());
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}
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}
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}
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