xref: /third_party/skia/tools/Resources.cpp (revision cb93a386) 
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 "include/core/SkBitmap.h"
9#include "include/core/SkData.h"
10#include "include/core/SkImage.h"
11#include "include/core/SkImageGenerator.h"
12#include "include/core/SkStream.h"
13#include "include/core/SkTypeface.h"
14#include "src/core/SkOSFile.h"
15#include "src/utils/SkOSPath.h"
16#include "tools/ResourceFactory.h"
17#include "tools/Resources.h"
18#include "tools/flags/CommandLineFlags.h"
19
20static DEFINE_string2(resourcePath, i, "resources",
21                      "Directory with test resources: images, fonts, etc.");
22
23sk_sp<SkData> (*gResourceFactory)(const char*) = nullptr;
24
25SkString GetResourcePath(const char* resource) {
26    return SkOSPath::Join(FLAGS_resourcePath[0], resource);
27}
28
29void SetResourcePath(const char* resource) {
30    FLAGS_resourcePath.set(0, resource);
31}
32
33bool DecodeDataToBitmap(sk_sp<SkData> data, SkBitmap* dst) {
34    std::unique_ptr<SkImageGenerator> gen(SkImageGenerator::MakeFromEncoded(std::move(data)));
35    return gen && dst->tryAllocPixels(gen->getInfo()) &&
36        gen->getPixels(gen->getInfo().makeColorSpace(nullptr), dst->getPixels(), dst->rowBytes());
37}
38
39std::unique_ptr<SkStreamAsset> GetResourceAsStream(const char* resource) {
40    auto data = GetResourceAsData(resource);
41    return data ? std::unique_ptr<SkStreamAsset>(new SkMemoryStream(std::move(data)))
42                : nullptr;
43}
44
45sk_sp<SkData> GetResourceAsData(const char* resource) {
46    if (sk_sp<SkData> data = gResourceFactory
47                           ? gResourceFactory(resource)
48                           : SkData::MakeFromFileName(GetResourcePath(resource).c_str())) {
49        return data;
50    }
51    SkDebugf("Resource \"%s\" not found.\n", GetResourcePath(resource).c_str());
52    #ifdef SK_TOOLS_REQUIRE_RESOURCES
53    SK_ABORT("missing resource");
54    #endif
55    return nullptr;
56}
57
58sk_sp<SkTypeface> MakeResourceAsTypeface(const char* resource, int ttcIndex) {
59    return SkTypeface::MakeFromStream(GetResourceAsStream(resource), ttcIndex);
60}
61