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      1 /*
      2  * Copyright 2014 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "SkTypes.h"
      9 #include "Resources.h"
     10 #include "Test.h"
     11 
     12 #if SK_SUPPORT_GPU
     13 #include "GrContext.h"
     14 #endif
     15 #include "SkCanvas.h"
     16 #include "SkColorSpace_Base.h"
     17 #include "SkImage.h"
     18 #include "SkSurface.h"
     19 #include "SkReadBuffer.h"
     20 #include "SkWriteBuffer.h"
     21 
     22 static void test_flatten(skiatest::Reporter* reporter, const SkImageInfo& info) {
     23     // Need a safe amount of 4-byte aligned storage.  Note that one of the test ICC profiles
     24     // is ~7500 bytes.
     25     const size_t storageBytes = 8000;
     26     SkAutoTMalloc<uint32_t> storage(storageBytes / sizeof(uint32_t));
     27     SkBinaryWriteBuffer wb(storage.get(), storageBytes);
     28     info.flatten(wb);
     29     SkASSERT(wb.bytesWritten() < storageBytes);
     30 
     31     SkReadBuffer rb(storage.get(), wb.bytesWritten());
     32 
     33     // pick a noisy byte pattern, so we ensure that unflatten sets all of our fields
     34     SkImageInfo info2 = SkImageInfo::Make(0xB8, 0xB8, (SkColorType) 0xB8, (SkAlphaType) 0xB8);
     35 
     36     info2.unflatten(rb);
     37     REPORTER_ASSERT(reporter, rb.offset() == wb.bytesWritten());
     38 
     39     REPORTER_ASSERT(reporter, info == info2);
     40 }
     41 
     42 DEF_TEST(ImageInfo_flattening, reporter) {
     43      sk_sp<SkData> data =
     44              SkData::MakeFromFileName(GetResourcePath("icc_profiles/HP_ZR30w.icc").c_str());
     45     sk_sp<SkColorSpace> space0 = SkColorSpace::MakeICC(data->data(), data->size());
     46     data = SkData::MakeFromFileName( GetResourcePath("icc_profiles/HP_Z32x.icc").c_str());
     47     sk_sp<SkColorSpace> space1 = SkColorSpace::MakeICC(data->data(), data->size());
     48     data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperLeft.icc").c_str());
     49     sk_sp<SkColorSpace> space2 = SkColorSpace::MakeICC(data->data(), data->size());
     50     data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperRight.icc").c_str());
     51     sk_sp<SkColorSpace> space3 = SkColorSpace::MakeICC(data->data(), data->size());
     52 
     53     sk_sp<SkColorSpace> spaces[] = {
     54         nullptr,
     55         SkColorSpace::MakeSRGB(),
     56         SkColorSpace_Base::MakeNamed(SkColorSpace_Base::kAdobeRGB_Named),
     57         space0,
     58         space1,
     59         space2,
     60         space3,
     61     };
     62 
     63     for (int ct = 0; ct <= kLastEnum_SkColorType; ++ct) {
     64         for (int at = 0; at <= kLastEnum_SkAlphaType; ++at) {
     65             for (auto& cs : spaces) {
     66                 SkImageInfo info = SkImageInfo::Make(100, 200,
     67                                                      static_cast<SkColorType>(ct),
     68                                                      static_cast<SkAlphaType>(at),
     69                                                      cs);
     70                 test_flatten(reporter, info);
     71             }
     72         }
     73     }
     74 }
     75 
     76 static void check_isopaque(skiatest::Reporter* reporter, const sk_sp<SkSurface>& surface,
     77                            bool expectedOpaque) {
     78     sk_sp<SkImage> image(surface->makeImageSnapshot());
     79     REPORTER_ASSERT(reporter, image->isOpaque() == expectedOpaque);
     80 }
     81 
     82 DEF_TEST(ImageIsOpaqueTest, reporter) {
     83     SkImageInfo infoTransparent = SkImageInfo::MakeN32Premul(5, 5);
     84     auto surfaceTransparent(SkSurface::MakeRaster(infoTransparent));
     85     check_isopaque(reporter, surfaceTransparent, false);
     86 
     87     SkImageInfo infoOpaque = SkImageInfo::MakeN32(5, 5, kOpaque_SkAlphaType);
     88     auto surfaceOpaque(SkSurface::MakeRaster(infoOpaque));
     89     check_isopaque(reporter, surfaceOpaque, true);
     90 }
     91 
     92 #if SK_SUPPORT_GPU
     93 
     94 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageIsOpaqueTest_Gpu, reporter, ctxInfo) {
     95     GrContext* context = ctxInfo.grContext();
     96     SkImageInfo infoTransparent = SkImageInfo::MakeN32Premul(5, 5);
     97     auto surfaceTransparent(SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, infoTransparent));
     98     check_isopaque(reporter, surfaceTransparent, false);
     99 
    100     SkImageInfo infoOpaque = SkImageInfo::MakeN32(5, 5, kOpaque_SkAlphaType);
    101     auto surfaceOpaque(SkSurface::MakeRenderTarget(context,SkBudgeted::kNo, infoOpaque));
    102 
    103     check_isopaque(reporter, surfaceOpaque, true);
    104 }
    105 
    106 #endif
    107 
    108 ///////////////////////////////////////////////////////////////////////////////////////////////////
    109 #include "SkPictureRecorder.h"
    110 
    111 static sk_sp<SkPicture> make_picture() {
    112     SkPictureRecorder recorder;
    113     SkCanvas* canvas = recorder.beginRecording({ 0, 0, 10, 10 });
    114     canvas->drawColor(SK_ColorRED);
    115     return recorder.finishRecordingAsPicture();
    116 }
    117 
    118 DEF_TEST(Image_isAlphaOnly, reporter) {
    119     SkPMColor pmColors = 0;
    120     SkPixmap pmap = {
    121         SkImageInfo::MakeN32Premul(1, 1),
    122         &pmColors,
    123         sizeof(pmColors)
    124     };
    125     for (auto& image : {
    126         SkImage::MakeRasterCopy(pmap),
    127         GetResourceAsImage("mandrill_128.png"),
    128         GetResourceAsImage("color_wheel.jpg"),
    129         SkImage::MakeFromPicture(make_picture(), { 10, 10 }, nullptr, nullptr,
    130                                  SkImage::BitDepth::kU8,
    131                                  SkColorSpace::MakeSRGB()),
    132     })
    133     {
    134         REPORTER_ASSERT(reporter, image->isAlphaOnly() == false);
    135     }
    136 
    137     REPORTER_ASSERT(reporter, SkImage::MakeRasterCopy({
    138         SkImageInfo::MakeA8(1, 1), (uint8_t*)&pmColors, 1})->isAlphaOnly() == true);
    139 }
    140