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 | ea4673f | 2014-08-18 08:27:09 -0700 | [diff] [blame^] | 13 | #include "SkDecodingImageGenerator.h" |
halcanary@google.com | 1bed687 | 2014-01-02 17:29:28 +0000 | [diff] [blame] | 14 | #include "SkMallocPixelRef.h" |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 15 | |
| 16 | class SkImage_Raster : public SkImage_Base { |
| 17 | public: |
mike@reedtribe.org | b947625 | 2012-11-15 02:37:45 +0000 | [diff] [blame] | 18 | static bool ValidArgs(const Info& info, size_t rowBytes) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 19 | const int maxDimension = SK_MaxS32 >> 2; |
| 20 | const size_t kMaxPixelByteSize = SK_MaxS32; |
| 21 | |
| 22 | if (info.fWidth < 0 || info.fHeight < 0) { |
| 23 | return false; |
| 24 | } |
| 25 | if (info.fWidth > maxDimension || info.fHeight > maxDimension) { |
| 26 | return false; |
| 27 | } |
reed@google.com | 2bd8b81 | 2013-11-01 13:46:54 +0000 | [diff] [blame] | 28 | if ((unsigned)info.fColorType > (unsigned)kLastEnum_SkColorType) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 29 | return false; |
| 30 | } |
reed@google.com | d28ba80 | 2013-09-20 19:33:52 +0000 | [diff] [blame] | 31 | if ((unsigned)info.fAlphaType > (unsigned)kLastEnum_SkAlphaType) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 32 | return false; |
| 33 | } |
| 34 | |
commit-bot@chromium.org | a3264e5 | 2014-05-30 13:26:10 +0000 | [diff] [blame] | 35 | if (kUnknown_SkColorType == info.colorType()) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 36 | return false; |
| 37 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 38 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 39 | // TODO: check colorspace |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 40 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 41 | if (rowBytes < SkImageMinRowBytes(info)) { |
| 42 | return false; |
| 43 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 44 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 45 | int64_t size = (int64_t)info.fHeight * rowBytes; |
bsalomon@google.com | d9e0181 | 2012-08-29 19:35:44 +0000 | [diff] [blame] | 46 | if (size > (int64_t)kMaxPixelByteSize) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 47 | return false; |
| 48 | } |
| 49 | return true; |
| 50 | } |
| 51 | |
| 52 | static SkImage* NewEmpty(); |
| 53 | |
reed@google.com | 2bd8b81 | 2013-11-01 13:46:54 +0000 | [diff] [blame] | 54 | SkImage_Raster(const SkImageInfo&, SkData*, size_t rb); |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 55 | virtual ~SkImage_Raster(); |
| 56 | |
reed | 8572fc0 | 2014-08-11 13:03:55 -0700 | [diff] [blame] | 57 | virtual void onDraw(SkCanvas*, SkScalar, SkScalar, const SkPaint*) const SK_OVERRIDE; |
| 58 | virtual void onDrawRectToRect(SkCanvas*, const SkRect*, const SkRect&, |
| 59 | const SkPaint*) const SK_OVERRIDE; |
reed@google.com | 4f7c615 | 2014-02-06 14:11:56 +0000 | [diff] [blame] | 60 | virtual bool onReadPixels(SkBitmap*, const SkIRect&) const SK_OVERRIDE; |
| 61 | virtual const void* onPeekPixels(SkImageInfo*, size_t* /*rowBytes*/) const SK_OVERRIDE; |
reed@google.com | 4b0757b | 2013-05-20 16:33:41 +0000 | [diff] [blame] | 62 | virtual bool getROPixels(SkBitmap*) const SK_OVERRIDE; |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 63 | |
| 64 | // exposed for SkSurface_Raster via SkNewImageFromPixelRef |
commit-bot@chromium.org | e13af71 | 2014-01-13 20:39:14 +0000 | [diff] [blame] | 65 | SkImage_Raster(const SkImageInfo&, SkPixelRef*, size_t rowBytes); |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 66 | |
reed@google.com | 97af1a6 | 2012-08-28 12:19:02 +0000 | [diff] [blame] | 67 | SkPixelRef* getPixelRef() const { return fBitmap.pixelRef(); } |
| 68 | |
piotaixr | 76d5b47 | 2014-07-22 15:02:05 -0700 | [diff] [blame] | 69 | virtual SkShader* onNewShader(SkShader::TileMode, |
| 70 | SkShader::TileMode, |
| 71 | const SkMatrix* localMatrix) const SK_OVERRIDE; |
piotaixr | cef04f8 | 2014-07-14 07:48:04 -0700 | [diff] [blame] | 72 | |
halcanary | ea4673f | 2014-08-18 08:27:09 -0700 | [diff] [blame^] | 73 | SkImage_Raster(const SkBitmap& bm) |
| 74 | : INHERITED(bm.width(), bm.height()) |
| 75 | , fBitmap(bm) {} |
| 76 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 77 | private: |
| 78 | SkImage_Raster() : INHERITED(0, 0) {} |
| 79 | |
| 80 | SkBitmap fBitmap; |
| 81 | |
| 82 | typedef SkImage_Base INHERITED; |
| 83 | }; |
| 84 | |
| 85 | /////////////////////////////////////////////////////////////////////////////// |
| 86 | |
| 87 | SkImage* SkImage_Raster::NewEmpty() { |
| 88 | // Returns lazily created singleton |
| 89 | static SkImage* gEmpty; |
| 90 | if (NULL == gEmpty) { |
| 91 | gEmpty = SkNEW(SkImage_Raster); |
| 92 | } |
| 93 | gEmpty->ref(); |
| 94 | return gEmpty; |
| 95 | } |
| 96 | |
reed@google.com | 4f7c615 | 2014-02-06 14:11:56 +0000 | [diff] [blame] | 97 | static void release_data(void* addr, void* context) { |
| 98 | SkData* data = static_cast<SkData*>(context); |
| 99 | data->unref(); |
| 100 | } |
| 101 | |
mike@reedtribe.org | b947625 | 2012-11-15 02:37:45 +0000 | [diff] [blame] | 102 | SkImage_Raster::SkImage_Raster(const Info& info, SkData* data, size_t rowBytes) |
reed@google.com | 4f7c615 | 2014-02-06 14:11:56 +0000 | [diff] [blame] | 103 | : INHERITED(info.fWidth, info.fHeight) |
| 104 | { |
| 105 | data->ref(); |
| 106 | void* addr = const_cast<void*>(data->data()); |
commit-bot@chromium.org | 00f8d6c | 2014-05-29 15:57:20 +0000 | [diff] [blame] | 107 | SkColorTable* ctable = NULL; |
reed@google.com | 4f7c615 | 2014-02-06 14:11:56 +0000 | [diff] [blame] | 108 | |
commit-bot@chromium.org | 00f8d6c | 2014-05-29 15:57:20 +0000 | [diff] [blame] | 109 | fBitmap.installPixels(info, addr, rowBytes, ctable, release_data, data); |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 110 | fBitmap.setImmutable(); |
reed@google.com | 4f7c615 | 2014-02-06 14:11:56 +0000 | [diff] [blame] | 111 | fBitmap.lockPixels(); |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 112 | } |
| 113 | |
commit-bot@chromium.org | e13af71 | 2014-01-13 20:39:14 +0000 | [diff] [blame] | 114 | SkImage_Raster::SkImage_Raster(const Info& info, SkPixelRef* pr, size_t rowBytes) |
| 115 | : INHERITED(info.fWidth, info.fHeight) |
commit-bot@chromium.org | f190178 | 2014-01-08 22:24:55 +0000 | [diff] [blame] | 116 | { |
commit-bot@chromium.org | a3264e5 | 2014-05-30 13:26:10 +0000 | [diff] [blame] | 117 | fBitmap.setInfo(info, rowBytes); |
commit-bot@chromium.org | e13af71 | 2014-01-13 20:39:14 +0000 | [diff] [blame] | 118 | fBitmap.setPixelRef(pr); |
reed@google.com | 4f7c615 | 2014-02-06 14:11:56 +0000 | [diff] [blame] | 119 | fBitmap.lockPixels(); |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 120 | } |
| 121 | |
| 122 | SkImage_Raster::~SkImage_Raster() {} |
| 123 | |
reed | 8572fc0 | 2014-08-11 13:03:55 -0700 | [diff] [blame] | 124 | SkShader* SkImage_Raster::onNewShader(SkShader::TileMode tileX, SkShader::TileMode tileY, |
| 125 | const SkMatrix* localMatrix) const { |
piotaixr | 76d5b47 | 2014-07-22 15:02:05 -0700 | [diff] [blame] | 126 | return SkShader::CreateBitmapShader(fBitmap, tileX, tileY, localMatrix); |
piotaixr | cef04f8 | 2014-07-14 07:48:04 -0700 | [diff] [blame] | 127 | } |
| 128 | |
reed | 8572fc0 | 2014-08-11 13:03:55 -0700 | [diff] [blame] | 129 | void SkImage_Raster::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y, const SkPaint* paint) const { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 130 | canvas->drawBitmap(fBitmap, x, y, paint); |
| 131 | } |
| 132 | |
reed | 8572fc0 | 2014-08-11 13:03:55 -0700 | [diff] [blame] | 133 | void SkImage_Raster::onDrawRectToRect(SkCanvas* canvas, const SkRect* src, const SkRect& dst, |
| 134 | const SkPaint* paint) const { |
commit-bot@chromium.org | dfec28d | 2013-07-23 15:52:16 +0000 | [diff] [blame] | 135 | canvas->drawBitmapRectToRect(fBitmap, src, dst, paint); |
| 136 | } |
| 137 | |
reed@google.com | 4f7c615 | 2014-02-06 14:11:56 +0000 | [diff] [blame] | 138 | bool SkImage_Raster::onReadPixels(SkBitmap* dst, const SkIRect& subset) const { |
| 139 | if (dst->pixelRef()) { |
| 140 | return this->INHERITED::onReadPixels(dst, subset); |
| 141 | } else { |
| 142 | SkBitmap src; |
| 143 | if (!fBitmap.extractSubset(&src, subset)) { |
| 144 | return false; |
| 145 | } |
commit-bot@chromium.org | 8a2ad3c | 2014-02-23 03:59:35 +0000 | [diff] [blame] | 146 | return src.copyTo(dst, src.colorType()); |
reed@google.com | 4f7c615 | 2014-02-06 14:11:56 +0000 | [diff] [blame] | 147 | } |
| 148 | } |
| 149 | |
reed | 8572fc0 | 2014-08-11 13:03:55 -0700 | [diff] [blame] | 150 | const void* SkImage_Raster::onPeekPixels(SkImageInfo* infoPtr, size_t* rowBytesPtr) const { |
commit-bot@chromium.org | 466f5f3 | 2014-05-27 21:30:37 +0000 | [diff] [blame] | 151 | const SkImageInfo info = fBitmap.info(); |
| 152 | if ((kUnknown_SkColorType == info.colorType()) || !fBitmap.getPixels()) { |
reed@google.com | 2776e01 | 2014-02-06 14:30:44 +0000 | [diff] [blame] | 153 | return NULL; |
reed@google.com | 4f7c615 | 2014-02-06 14:11:56 +0000 | [diff] [blame] | 154 | } |
| 155 | *infoPtr = info; |
| 156 | *rowBytesPtr = fBitmap.rowBytes(); |
| 157 | return fBitmap.getPixels(); |
| 158 | } |
| 159 | |
reed@google.com | 4b0757b | 2013-05-20 16:33:41 +0000 | [diff] [blame] | 160 | bool SkImage_Raster::getROPixels(SkBitmap* dst) const { |
| 161 | *dst = fBitmap; |
| 162 | return true; |
| 163 | } |
| 164 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 165 | /////////////////////////////////////////////////////////////////////////////// |
| 166 | |
reed@google.com | 2bd8b81 | 2013-11-01 13:46:54 +0000 | [diff] [blame] | 167 | 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] | 168 | if (!SkImage_Raster::ValidArgs(info, rowBytes)) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 169 | return NULL; |
| 170 | } |
| 171 | if (0 == info.fWidth && 0 == info.fHeight) { |
| 172 | return SkImage_Raster::NewEmpty(); |
| 173 | } |
| 174 | // check this after empty-check |
| 175 | if (NULL == pixels) { |
| 176 | return NULL; |
| 177 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 178 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 179 | // Here we actually make a copy of the caller's pixel data |
| 180 | SkAutoDataUnref data(SkData::NewWithCopy(pixels, info.fHeight * rowBytes)); |
mike@reedtribe.org | b947625 | 2012-11-15 02:37:45 +0000 | [diff] [blame] | 181 | return SkNEW_ARGS(SkImage_Raster, (info, data, rowBytes)); |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | |
reed@google.com | 999da9c | 2014-02-06 13:43:07 +0000 | [diff] [blame] | 185 | SkImage* SkImage::NewRasterData(const SkImageInfo& info, SkData* data, size_t rowBytes) { |
mike@reedtribe.org | b947625 | 2012-11-15 02:37:45 +0000 | [diff] [blame] | 186 | if (!SkImage_Raster::ValidArgs(info, rowBytes)) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 187 | return NULL; |
| 188 | } |
| 189 | if (0 == info.fWidth && 0 == info.fHeight) { |
| 190 | return SkImage_Raster::NewEmpty(); |
| 191 | } |
| 192 | // check this after empty-check |
reed@google.com | 999da9c | 2014-02-06 13:43:07 +0000 | [diff] [blame] | 193 | if (NULL == data) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 194 | return NULL; |
| 195 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 196 | |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 197 | // did they give us enough data? |
| 198 | size_t size = info.fHeight * rowBytes; |
reed@google.com | 999da9c | 2014-02-06 13:43:07 +0000 | [diff] [blame] | 199 | if (data->size() < size) { |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 200 | return NULL; |
| 201 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 202 | |
mike@reedtribe.org | b947625 | 2012-11-15 02:37:45 +0000 | [diff] [blame] | 203 | return SkNEW_ARGS(SkImage_Raster, (info, data, rowBytes)); |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 204 | } |
| 205 | |
halcanary | ea4673f | 2014-08-18 08:27:09 -0700 | [diff] [blame^] | 206 | SkImage* SkImage::NewFromGenerator(SkImageGenerator* generator) { |
| 207 | SkBitmap bitmap; |
| 208 | if (!SkInstallDiscardablePixelRef(generator, &bitmap)) { |
| 209 | return NULL; |
| 210 | } |
| 211 | return SkNEW_ARGS(SkImage_Raster, (bitmap)); |
| 212 | } |
| 213 | |
commit-bot@chromium.org | e13af71 | 2014-01-13 20:39:14 +0000 | [diff] [blame] | 214 | SkImage* SkNewImageFromPixelRef(const SkImageInfo& info, SkPixelRef* pr, |
| 215 | size_t rowBytes) { |
| 216 | return SkNEW_ARGS(SkImage_Raster, (info, pr, rowBytes)); |
reed@google.com | 58b21ec | 2012-07-30 18:20:12 +0000 | [diff] [blame] | 217 | } |
| 218 | |
reed@google.com | 97af1a6 | 2012-08-28 12:19:02 +0000 | [diff] [blame] | 219 | SkPixelRef* SkBitmapImageGetPixelRef(SkImage* image) { |
| 220 | return ((SkImage_Raster*)image)->getPixelRef(); |
| 221 | } |