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/SkImageGenerator.h"
9
10 #include "include/core/SkImage.h"
11 #include "src/core/SkNextID.h"
12
SkImageGenerator(const SkImageInfo & info,uint32_t uniqueID)13 SkImageGenerator::SkImageGenerator(const SkImageInfo& info, uint32_t uniqueID)
14 : fInfo(info)
15 , fUniqueID(kNeedNewImageUniqueID == uniqueID ? SkNextID::ImageID() : uniqueID)
16 {}
17
getPixels(const SkImageInfo & info,void * pixels,size_t rowBytes)18 bool SkImageGenerator::getPixels(const SkImageInfo& info, void* pixels, size_t rowBytes) {
19 if (kUnknown_SkColorType == info.colorType()) {
20 return false;
21 }
22 if (nullptr == pixels) {
23 return false;
24 }
25 if (rowBytes < info.minRowBytes()) {
26 return false;
27 }
28
29 Options defaultOpts;
30 return this->onGetPixels(info, pixels, rowBytes, defaultOpts);
31 }
32
queryYUVAInfo(const SkYUVAPixmapInfo::SupportedDataTypes & supportedDataTypes,SkYUVAPixmapInfo * yuvaPixmapInfo) const33 bool SkImageGenerator::queryYUVAInfo(const SkYUVAPixmapInfo::SupportedDataTypes& supportedDataTypes,
34 SkYUVAPixmapInfo* yuvaPixmapInfo) const {
35 SkASSERT(yuvaPixmapInfo);
36
37 return this->onQueryYUVAInfo(supportedDataTypes, yuvaPixmapInfo) &&
38 yuvaPixmapInfo->isSupported(supportedDataTypes);
39 }
40
getYUVAPlanes(const SkYUVAPixmaps & yuvaPixmaps)41 bool SkImageGenerator::getYUVAPlanes(const SkYUVAPixmaps& yuvaPixmaps) {
42 return this->onGetYUVAPlanes(yuvaPixmaps);
43 }
44
45 #if SK_SUPPORT_GPU
46 #include "src/gpu/GrSurfaceProxyView.h"
47
generateTexture(GrRecordingContext * ctx,const SkImageInfo & info,const SkIPoint & origin,GrMipmapped mipMapped,GrImageTexGenPolicy texGenPolicy)48 GrSurfaceProxyView SkImageGenerator::generateTexture(GrRecordingContext* ctx,
49 const SkImageInfo& info,
50 const SkIPoint& origin,
51 GrMipmapped mipMapped,
52 GrImageTexGenPolicy texGenPolicy) {
53 SkIRect srcRect = SkIRect::MakeXYWH(origin.x(), origin.y(), info.width(), info.height());
54 if (!SkIRect::MakeWH(fInfo.width(), fInfo.height()).contains(srcRect)) {
55 return {};
56 }
57 return this->onGenerateTexture(ctx, info, origin, mipMapped, texGenPolicy);
58 }
59
onGenerateTexture(GrRecordingContext *,const SkImageInfo &,const SkIPoint &,GrMipmapped,GrImageTexGenPolicy)60 GrSurfaceProxyView SkImageGenerator::onGenerateTexture(GrRecordingContext*,
61 const SkImageInfo&,
62 const SkIPoint&,
63 GrMipmapped,
64 GrImageTexGenPolicy) {
65 return {};
66 }
67 #endif
68
69 ///////////////////////////////////////////////////////////////////////////////////////////////////
70
71 #include "include/core/SkBitmap.h"
72 #include "src/codec/SkColorTable.h"
73
74 #include "include/core/SkGraphics.h"
75
76 static SkGraphics::ImageGeneratorFromEncodedDataFactory gFactory;
77
78 SkGraphics::ImageGeneratorFromEncodedDataFactory
SetImageGeneratorFromEncodedDataFactory(ImageGeneratorFromEncodedDataFactory factory)79 SkGraphics::SetImageGeneratorFromEncodedDataFactory(ImageGeneratorFromEncodedDataFactory factory)
80 {
81 ImageGeneratorFromEncodedDataFactory prev = gFactory;
82 gFactory = factory;
83 return prev;
84 }
85
MakeFromEncoded(sk_sp<SkData> data)86 std::unique_ptr<SkImageGenerator> SkImageGenerator::MakeFromEncoded(sk_sp<SkData> data) {
87 if (!data) {
88 return nullptr;
89 }
90 if (gFactory) {
91 if (std::unique_ptr<SkImageGenerator> generator = gFactory(data)) {
92 return generator;
93 }
94 }
95 return SkImageGenerator::MakeFromEncodedImpl(std::move(data));
96 }
97