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 "SkData.h"
9#include "SkCanvas.h"
10#include "SkGraphics.h"
11#include "SkImageGenerator.h"
12#include "Test.h"
13
14static bool gMyFactoryWasCalled;
15
16static std::unique_ptr<SkImageGenerator> my_factory(sk_sp<SkData>) {
17    gMyFactoryWasCalled = true;
18    return nullptr;
19}
20
21static void test_imagegenerator_factory(skiatest::Reporter* reporter) {
22    // just need a non-empty data to test things
23    sk_sp<SkData> data(SkData::MakeWithCString("test_imagegenerator_factory"));
24
25    gMyFactoryWasCalled = false;
26
27    REPORTER_ASSERT(reporter, !gMyFactoryWasCalled);
28
29    std::unique_ptr<SkImageGenerator> gen = SkImageGenerator::MakeFromEncoded(data);
30    REPORTER_ASSERT(reporter, nullptr == gen);
31    REPORTER_ASSERT(reporter, !gMyFactoryWasCalled);
32
33    // Test is racy, in that it hopes no other thread is changing this global...
34    auto prev = SkGraphics::SetImageGeneratorFromEncodedDataFactory(my_factory);
35    gen = SkImageGenerator::MakeFromEncoded(data);
36    REPORTER_ASSERT(reporter, nullptr == gen);
37    REPORTER_ASSERT(reporter, gMyFactoryWasCalled);
38    SkGraphics::SetImageGeneratorFromEncodedDataFactory(prev);
39}
40
41class MyImageGenerator : public SkImageGenerator {
42public:
43    MyImageGenerator() : SkImageGenerator(SkImageInfo::MakeN32Premul(0, 0)) {}
44};
45
46DEF_TEST(ImageGenerator, reporter) {
47    MyImageGenerator ig;
48    SkYUVSizeInfo sizeInfo;
49    sizeInfo.fSizes[SkYUVSizeInfo::kY] = SkISize::Make(200, 200);
50    sizeInfo.fSizes[SkYUVSizeInfo::kU] = SkISize::Make(100, 100);
51    sizeInfo.fSizes[SkYUVSizeInfo::kV] = SkISize::Make( 50,  50);
52    sizeInfo.fWidthBytes[SkYUVSizeInfo::kY] = 0;
53    sizeInfo.fWidthBytes[SkYUVSizeInfo::kU] = 0;
54    sizeInfo.fWidthBytes[SkYUVSizeInfo::kV] = 0;
55    void* planes[3] = { nullptr };
56    SkYUVColorSpace colorSpace;
57
58    // Check that the YUV decoding API does not cause any crashes
59    ig.queryYUV8(&sizeInfo, nullptr);
60    ig.queryYUV8(&sizeInfo, &colorSpace);
61    sizeInfo.fWidthBytes[SkYUVSizeInfo::kY] = 250;
62    sizeInfo.fWidthBytes[SkYUVSizeInfo::kU] = 250;
63    sizeInfo.fWidthBytes[SkYUVSizeInfo::kV] = 250;
64    int dummy;
65    planes[SkYUVSizeInfo::kY] = planes[SkYUVSizeInfo::kU] = planes[SkYUVSizeInfo::kV] = &dummy;
66    ig.getYUV8Planes(sizeInfo, planes);
67
68    // Suppressed due to https://code.google.com/p/skia/issues/detail?id=4339
69    if (false) {
70        test_imagegenerator_factory(reporter);
71    }
72}
73
74#include "SkAutoMalloc.h"
75#include "SkPictureRecorder.h"
76
77static sk_sp<SkPicture> make_picture() {
78    SkPictureRecorder recorder;
79    recorder.beginRecording(100, 100)->drawColor(SK_ColorRED);
80    return recorder.finishRecordingAsPicture();
81}
82
83DEF_TEST(PictureImageGenerator, reporter) {
84    const struct {
85        SkColorType fColorType;
86        SkAlphaType fAlphaType;
87        bool        fExpectSuccess;
88    } recs[] = {
89        { kRGBA_8888_SkColorType, kPremul_SkAlphaType, kRGBA_8888_SkColorType == kN32_SkColorType },
90        { kBGRA_8888_SkColorType, kPremul_SkAlphaType, kBGRA_8888_SkColorType == kN32_SkColorType },
91        { kRGBA_F16_SkColorType,  kPremul_SkAlphaType, true },
92
93        { kRGBA_8888_SkColorType, kUnpremul_SkAlphaType, false },
94        { kBGRA_8888_SkColorType, kUnpremul_SkAlphaType, false },
95        { kRGBA_F16_SkColorType,  kUnpremul_SkAlphaType, false },
96    };
97
98    auto colorspace = SkColorSpace::MakeSRGB();
99    auto picture = make_picture();
100    auto gen = SkImageGenerator::MakeFromPicture({100, 100}, picture, nullptr, nullptr,
101                                                 SkImage::BitDepth::kU8, colorspace);
102
103    // worst case for all requests
104    SkAutoMalloc storage(100 * 100 * SkColorTypeBytesPerPixel(kRGBA_F16_SkColorType));
105
106    for (const auto& rec : recs) {
107        SkImageInfo info = SkImageInfo::Make(100, 100, rec.fColorType, rec.fAlphaType, colorspace);
108        bool success = gen->getPixels(info, storage.get(), info.minRowBytes());
109        REPORTER_ASSERT(reporter, success == rec.fExpectSuccess);
110    }
111}
112
113