reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 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 "SkImage_Base.h" |
| 9 | #include "SkImagePriv.h" |
| 10 | #include "SkBitmap.h" |
| 11 | #include "SkCanvas.h" |
| 12 | #include "SkData.h" |
halcanary@google.com | 1bed687 | 2014-01-02 17:29:28 +0000 | [diff] [blame] | 13 | #include "SkMallocPixelRef.h" |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 14 | |
| 15 | class SkImage_Raster : public SkImage_Base { |
| 16 | public: |
mike@reedtribe.org | b947625 | 2012-11-15 02:37:45 +0000 | [diff] [blame] | 17 | static bool ValidArgs(const Info& info, size_t rowBytes) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 18 | const int maxDimension = SK_MaxS32 >> 2; |
| 19 | const size_t kMaxPixelByteSize = SK_MaxS32; |
| 20 | |
| 21 | if (info.fWidth < 0 || info.fHeight < 0) { |
| 22 | return false; |
| 23 | } |
| 24 | if (info.fWidth > maxDimension || info.fHeight > maxDimension) { |
| 25 | return false; |
| 26 | } |
reed@google.com | 2bd8b81 | 2013-11-01 13:46:54 +0000 | [diff] [blame] | 27 | if ((unsigned)info.fColorType > (unsigned)kLastEnum_SkColorType) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 28 | return false; |
| 29 | } |
reed@google.com | d28ba80 | 2013-09-20 19:33:52 +0000 | [diff] [blame] | 30 | if ((unsigned)info.fAlphaType > (unsigned)kLastEnum_SkAlphaType) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 31 | return false; |
| 32 | } |
| 33 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 34 | if (SkImageInfoToBitmapConfig(info) == SkBitmap::kNo_Config) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 35 | return false; |
| 36 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 37 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 38 | // TODO: check colorspace |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 39 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 40 | if (rowBytes < SkImageMinRowBytes(info)) { |
| 41 | return false; |
| 42 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 43 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 44 | int64_t size = (int64_t)info.fHeight * rowBytes; |
bsalomon@google.com | d9e0181 | 2012-08-29 19:35:44 +0000 | [diff] [blame] | 45 | if (size > (int64_t)kMaxPixelByteSize) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 46 | return false; |
| 47 | } |
| 48 | return true; |
| 49 | } |
| 50 | |
| 51 | static SkImage* NewEmpty(); |
| 52 | |
reed@google.com | 2bd8b81 | 2013-11-01 13:46:54 +0000 | [diff] [blame] | 53 | SkImage_Raster(const SkImageInfo&, SkData*, size_t rb); |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 54 | virtual ~SkImage_Raster(); |
| 55 | |
| 56 | virtual void onDraw(SkCanvas*, SkScalar, SkScalar, const SkPaint*) SK_OVERRIDE; |
commit-bot@chromium.org | dfec28d | 2013-07-23 15:52:16 +0000 | [diff] [blame] | 57 | virtual void onDrawRectToRect(SkCanvas*, const SkRect*, const SkRect&, const SkPaint*) SK_OVERRIDE; |
reed@google.com | 4b0757b | 2013-05-20 16:33:41 +0000 | [diff] [blame] | 58 | virtual bool getROPixels(SkBitmap*) const SK_OVERRIDE; |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 59 | |
| 60 | // exposed for SkSurface_Raster via SkNewImageFromPixelRef |
reed@google.com | 2bd8b81 | 2013-11-01 13:46:54 +0000 | [diff] [blame] | 61 | SkImage_Raster(const SkImageInfo&, SkPixelRef*, size_t rowBytes); |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 62 | |
reed@google.com | 97af1a6 | 2012-08-28 12:19:02 +0000 | [diff] [blame] | 63 | SkPixelRef* getPixelRef() const { return fBitmap.pixelRef(); } |
| 64 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 65 | private: |
| 66 | SkImage_Raster() : INHERITED(0, 0) {} |
| 67 | |
| 68 | SkBitmap fBitmap; |
| 69 | |
| 70 | typedef SkImage_Base INHERITED; |
| 71 | }; |
| 72 | |
| 73 | /////////////////////////////////////////////////////////////////////////////// |
| 74 | |
| 75 | SkImage* SkImage_Raster::NewEmpty() { |
| 76 | // Returns lazily created singleton |
| 77 | static SkImage* gEmpty; |
| 78 | if (NULL == gEmpty) { |
| 79 | gEmpty = SkNEW(SkImage_Raster); |
| 80 | } |
| 81 | gEmpty->ref(); |
| 82 | return gEmpty; |
| 83 | } |
| 84 | |
mike@reedtribe.org | b947625 | 2012-11-15 02:37:45 +0000 | [diff] [blame] | 85 | SkImage_Raster::SkImage_Raster(const Info& info, SkData* data, size_t rowBytes) |
| 86 | : INHERITED(info.fWidth, info.fHeight) { |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 87 | fBitmap.setConfig(info, rowBytes); |
halcanary@google.com | 1bed687 | 2014-01-02 17:29:28 +0000 | [diff] [blame] | 88 | SkAutoTUnref<SkPixelRef> ref( |
| 89 | SkMallocPixelRef::NewWithData(info, rowBytes, NULL, data, 0)); |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 90 | fBitmap.setPixelRef(ref); |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 91 | fBitmap.setImmutable(); |
| 92 | } |
| 93 | |
| 94 | SkImage_Raster::SkImage_Raster(const Info& info, SkPixelRef* pr, size_t rowBytes) |
commit-bot@chromium.org | f190178 | 2014-01-08 22:24:55 +0000 | [diff] [blame^] | 95 | : INHERITED(info.fWidth, info.fHeight) |
| 96 | { |
| 97 | fBitmap.setConfig(info, rowBytes); |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 98 | fBitmap.setPixelRef(pr); |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | SkImage_Raster::~SkImage_Raster() {} |
| 102 | |
| 103 | void SkImage_Raster::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y, const SkPaint* paint) { |
| 104 | canvas->drawBitmap(fBitmap, x, y, paint); |
| 105 | } |
| 106 | |
commit-bot@chromium.org | dfec28d | 2013-07-23 15:52:16 +0000 | [diff] [blame] | 107 | void SkImage_Raster::onDrawRectToRect(SkCanvas* canvas, const SkRect* src, const SkRect& dst, const SkPaint* paint) { |
| 108 | canvas->drawBitmapRectToRect(fBitmap, src, dst, paint); |
| 109 | } |
| 110 | |
reed@google.com | 4b0757b | 2013-05-20 16:33:41 +0000 | [diff] [blame] | 111 | bool SkImage_Raster::getROPixels(SkBitmap* dst) const { |
| 112 | *dst = fBitmap; |
| 113 | return true; |
| 114 | } |
| 115 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 116 | /////////////////////////////////////////////////////////////////////////////// |
| 117 | |
reed@google.com | 2bd8b81 | 2013-11-01 13:46:54 +0000 | [diff] [blame] | 118 | SkImage* SkImage::NewRasterCopy(const SkImageInfo& info, const void* pixels, size_t rowBytes) { |
mike@reedtribe.org | b947625 | 2012-11-15 02:37:45 +0000 | [diff] [blame] | 119 | if (!SkImage_Raster::ValidArgs(info, rowBytes)) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 120 | return NULL; |
| 121 | } |
| 122 | if (0 == info.fWidth && 0 == info.fHeight) { |
| 123 | return SkImage_Raster::NewEmpty(); |
| 124 | } |
| 125 | // check this after empty-check |
| 126 | if (NULL == pixels) { |
| 127 | return NULL; |
| 128 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 129 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 130 | // Here we actually make a copy of the caller's pixel data |
| 131 | SkAutoDataUnref data(SkData::NewWithCopy(pixels, info.fHeight * rowBytes)); |
mike@reedtribe.org | b947625 | 2012-11-15 02:37:45 +0000 | [diff] [blame] | 132 | return SkNEW_ARGS(SkImage_Raster, (info, data, rowBytes)); |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 133 | } |
| 134 | |
| 135 | |
reed@google.com | 2bd8b81 | 2013-11-01 13:46:54 +0000 | [diff] [blame] | 136 | SkImage* SkImage::NewRasterData(const SkImageInfo& info, SkData* pixelData, size_t rowBytes) { |
mike@reedtribe.org | b947625 | 2012-11-15 02:37:45 +0000 | [diff] [blame] | 137 | if (!SkImage_Raster::ValidArgs(info, rowBytes)) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 138 | return NULL; |
| 139 | } |
| 140 | if (0 == info.fWidth && 0 == info.fHeight) { |
| 141 | return SkImage_Raster::NewEmpty(); |
| 142 | } |
| 143 | // check this after empty-check |
| 144 | if (NULL == pixelData) { |
| 145 | return NULL; |
| 146 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 147 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 148 | // did they give us enough data? |
| 149 | size_t size = info.fHeight * rowBytes; |
| 150 | if (pixelData->size() < size) { |
| 151 | return NULL; |
| 152 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 153 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 154 | SkAutoDataUnref data(pixelData); |
mike@reedtribe.org | b947625 | 2012-11-15 02:37:45 +0000 | [diff] [blame] | 155 | return SkNEW_ARGS(SkImage_Raster, (info, data, rowBytes)); |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 156 | } |
| 157 | |
reed@google.com | 2bd8b81 | 2013-11-01 13:46:54 +0000 | [diff] [blame] | 158 | SkImage* SkNewImageFromPixelRef(const SkImageInfo& info, SkPixelRef* pr, |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 159 | size_t rowBytes) { |
| 160 | return SkNEW_ARGS(SkImage_Raster, (info, pr, rowBytes)); |
| 161 | } |
| 162 | |
reed@google.com | 97af1a6 | 2012-08-28 12:19:02 +0000 | [diff] [blame] | 163 | SkPixelRef* SkBitmapImageGetPixelRef(SkImage* image) { |
| 164 | return ((SkImage_Raster*)image)->getPixelRef(); |
| 165 | } |