reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 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 | #ifndef SkImageInfo_DEFINED |
| 9 | #define SkImageInfo_DEFINED |
| 10 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 11 | #include "SkMath.h" |
halcanary | f622a6c | 2014-10-24 12:54:53 -0700 | [diff] [blame] | 12 | #include "SkRect.h" |
commit-bot@chromium.org | 32678d9 | 2014-01-15 02:38:22 +0000 | [diff] [blame] | 13 | #include "SkSize.h" |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 14 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 15 | class SkReadBuffer; |
halcanary | f622a6c | 2014-10-24 12:54:53 -0700 | [diff] [blame] | 16 | class SkWriteBuffer; |
reed@google.com | 9230ea2 | 2013-12-09 22:01:03 +0000 | [diff] [blame] | 17 | |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 18 | /** |
bsalomon | afa95e2 | 2015-10-12 10:39:46 -0700 | [diff] [blame] | 19 | * Describes how to interpret the alpha component of a pixel. |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 20 | */ |
| 21 | enum SkAlphaType { |
reed | 4497748 | 2015-02-27 10:23:00 -0800 | [diff] [blame] | 22 | kUnknown_SkAlphaType, |
skia.committer@gmail.com | 73a5d53 | 2013-11-14 07:02:31 +0000 | [diff] [blame] | 23 | |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 24 | /** |
| 25 | * All pixels are stored as opaque. This differs slightly from kIgnore in |
| 26 | * that kOpaque has correct "opaque" values stored in the pixels, while |
| 27 | * kIgnore may not, but in both cases the caller should treat the pixels |
| 28 | * as opaque. |
| 29 | */ |
| 30 | kOpaque_SkAlphaType, |
skia.committer@gmail.com | 73a5d53 | 2013-11-14 07:02:31 +0000 | [diff] [blame] | 31 | |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 32 | /** |
| 33 | * All pixels have their alpha premultiplied in their color components. |
| 34 | * This is the natural format for the rendering target pixels. |
| 35 | */ |
| 36 | kPremul_SkAlphaType, |
skia.committer@gmail.com | 73a5d53 | 2013-11-14 07:02:31 +0000 | [diff] [blame] | 37 | |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 38 | /** |
| 39 | * All pixels have their color components stored without any regard to the |
| 40 | * alpha. e.g. this is the default configuration for PNG images. |
| 41 | * |
| 42 | * This alpha-type is ONLY supported for input images. Rendering cannot |
| 43 | * generate this on output. |
| 44 | */ |
| 45 | kUnpremul_SkAlphaType, |
skia.committer@gmail.com | 73a5d53 | 2013-11-14 07:02:31 +0000 | [diff] [blame] | 46 | |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 47 | kLastEnum_SkAlphaType = kUnpremul_SkAlphaType |
| 48 | }; |
| 49 | |
| 50 | static inline bool SkAlphaTypeIsOpaque(SkAlphaType at) { |
reed | 4497748 | 2015-02-27 10:23:00 -0800 | [diff] [blame] | 51 | return kOpaque_SkAlphaType == at; |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 52 | } |
| 53 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 54 | static inline bool SkAlphaTypeIsValid(unsigned value) { |
| 55 | return value <= kLastEnum_SkAlphaType; |
| 56 | } |
| 57 | |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 58 | /////////////////////////////////////////////////////////////////////////////// |
| 59 | |
| 60 | /** |
| 61 | * Describes how to interpret the components of a pixel. |
reed | 6c6ddb8 | 2014-06-30 12:44:03 -0700 | [diff] [blame] | 62 | * |
| 63 | * kN32_SkColorType is an alias for whichever 32bit ARGB format is the "native" |
| 64 | * form for skia's blitters. Use this if you don't have a swizzle preference |
| 65 | * for 32bit pixels. |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 66 | */ |
| 67 | enum SkColorType { |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 68 | kUnknown_SkColorType, |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 69 | kAlpha_8_SkColorType, |
| 70 | kRGB_565_SkColorType, |
reed@google.com | 9230ea2 | 2013-12-09 22:01:03 +0000 | [diff] [blame] | 71 | kARGB_4444_SkColorType, |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 72 | kRGBA_8888_SkColorType, |
| 73 | kBGRA_8888_SkColorType, |
reed@google.com | 9230ea2 | 2013-12-09 22:01:03 +0000 | [diff] [blame] | 74 | kIndex_8_SkColorType, |
reed | 0c9b1a8 | 2015-03-17 17:44:06 -0700 | [diff] [blame] | 75 | kGray_8_SkColorType, |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 76 | |
reed | 0c9b1a8 | 2015-03-17 17:44:06 -0700 | [diff] [blame] | 77 | kLastEnum_SkColorType = kGray_8_SkColorType, |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 78 | |
| 79 | #if SK_PMCOLOR_BYTE_ORDER(B,G,R,A) |
commit-bot@chromium.org | 28fcae2 | 2014-04-11 17:15:40 +0000 | [diff] [blame] | 80 | kN32_SkColorType = kBGRA_8888_SkColorType, |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 81 | #elif SK_PMCOLOR_BYTE_ORDER(R,G,B,A) |
commit-bot@chromium.org | 28fcae2 | 2014-04-11 17:15:40 +0000 | [diff] [blame] | 82 | kN32_SkColorType = kRGBA_8888_SkColorType, |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 83 | #else |
reed | 3b40ee6 | 2014-12-21 14:29:04 -0800 | [diff] [blame] | 84 | #error "SK_*32_SHFIT values must correspond to BGRA or RGBA byte order" |
commit-bot@chromium.org | 28fcae2 | 2014-04-11 17:15:40 +0000 | [diff] [blame] | 85 | #endif |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 86 | }; |
| 87 | |
| 88 | static int SkColorTypeBytesPerPixel(SkColorType ct) { |
| 89 | static const uint8_t gSize[] = { |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 90 | 0, // Unknown |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 91 | 1, // Alpha_8 |
| 92 | 2, // RGB_565 |
reed@google.com | 9230ea2 | 2013-12-09 22:01:03 +0000 | [diff] [blame] | 93 | 2, // ARGB_4444 |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 94 | 4, // RGBA_8888 |
| 95 | 4, // BGRA_8888 |
| 96 | 1, // kIndex_8 |
reed | 0c9b1a8 | 2015-03-17 17:44:06 -0700 | [diff] [blame] | 97 | 1, // kGray_8 |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 98 | }; |
bungeman | 99fe822 | 2015-08-20 07:57:51 -0700 | [diff] [blame] | 99 | static_assert(SK_ARRAY_COUNT(gSize) == (size_t)(kLastEnum_SkColorType + 1), |
| 100 | "size_mismatch_with_SkColorType_enum"); |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 101 | |
| 102 | SkASSERT((size_t)ct < SK_ARRAY_COUNT(gSize)); |
| 103 | return gSize[ct]; |
| 104 | } |
| 105 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 106 | static inline size_t SkColorTypeMinRowBytes(SkColorType ct, int width) { |
| 107 | return width * SkColorTypeBytesPerPixel(ct); |
| 108 | } |
| 109 | |
| 110 | static inline bool SkColorTypeIsValid(unsigned value) { |
| 111 | return value <= kLastEnum_SkColorType; |
| 112 | } |
| 113 | |
reed | 92fc2ae | 2015-05-22 08:06:21 -0700 | [diff] [blame] | 114 | static inline size_t SkColorTypeComputeOffset(SkColorType ct, int x, int y, size_t rowBytes) { |
| 115 | int shift = 0; |
| 116 | switch (SkColorTypeBytesPerPixel(ct)) { |
| 117 | case 4: shift = 2; break; |
| 118 | case 2: shift = 1; break; |
| 119 | case 1: shift = 0; break; |
| 120 | default: return 0; |
| 121 | } |
| 122 | return y * rowBytes + (x << shift); |
| 123 | } |
| 124 | |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 125 | /////////////////////////////////////////////////////////////////////////////// |
| 126 | |
| 127 | /** |
scroggo | 2fd0d14 | 2014-07-01 07:08:19 -0700 | [diff] [blame] | 128 | * Return true if alphaType is supported by colorType. If there is a canonical |
| 129 | * alphaType for this colorType, return it in canonical. |
| 130 | */ |
| 131 | bool SkColorTypeValidateAlphaType(SkColorType colorType, SkAlphaType alphaType, |
| 132 | SkAlphaType* canonical = NULL); |
| 133 | |
| 134 | /////////////////////////////////////////////////////////////////////////////// |
| 135 | |
| 136 | /** |
rileya | abaef86 | 2014-09-12 17:45:58 -0700 | [diff] [blame] | 137 | * Describes the color space a YUV pixel. |
| 138 | */ |
| 139 | enum SkYUVColorSpace { |
| 140 | /** Standard JPEG color space. */ |
| 141 | kJPEG_SkYUVColorSpace, |
| 142 | /** SDTV standard Rec. 601 color space. Uses "studio swing" [16, 235] color |
| 143 | range. See http://en.wikipedia.org/wiki/Rec._601 for details. */ |
| 144 | kRec601_SkYUVColorSpace, |
rileya | 1340039 | 2015-07-20 15:00:03 -0700 | [diff] [blame] | 145 | /** HDTV standard Rec. 709 color space. Uses "studio swing" [16, 235] color |
| 146 | range. See http://en.wikipedia.org/wiki/Rec._709 for details. */ |
| 147 | kRec709_SkYUVColorSpace, |
rileya | abaef86 | 2014-09-12 17:45:58 -0700 | [diff] [blame] | 148 | |
rileya | 1340039 | 2015-07-20 15:00:03 -0700 | [diff] [blame] | 149 | kLastEnum_SkYUVColorSpace = kRec709_SkYUVColorSpace |
rileya | abaef86 | 2014-09-12 17:45:58 -0700 | [diff] [blame] | 150 | }; |
| 151 | |
| 152 | /////////////////////////////////////////////////////////////////////////////// |
| 153 | |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 154 | enum SkColorProfileType { |
| 155 | kLinear_SkColorProfileType, |
| 156 | kSRGB_SkColorProfileType, |
| 157 | |
| 158 | kLastEnum_SkColorProfileType = kSRGB_SkColorProfileType |
| 159 | }; |
| 160 | |
rileya | abaef86 | 2014-09-12 17:45:58 -0700 | [diff] [blame] | 161 | /** |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 162 | * Describe an image's dimensions and pixel type. |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 163 | * Used for both src images and render-targets (surfaces). |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 164 | */ |
reed | 4181492 | 2015-01-30 14:54:38 -0800 | [diff] [blame] | 165 | struct SK_API SkImageInfo { |
reed | e5ea500 | 2014-09-03 11:54:58 -0700 | [diff] [blame] | 166 | public: |
| 167 | SkImageInfo() |
| 168 | : fWidth(0) |
| 169 | , fHeight(0) |
| 170 | , fColorType(kUnknown_SkColorType) |
reed | 4497748 | 2015-02-27 10:23:00 -0800 | [diff] [blame] | 171 | , fAlphaType(kUnknown_SkAlphaType) |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 172 | , fProfileType(kLinear_SkColorProfileType) |
reed | e5ea500 | 2014-09-03 11:54:58 -0700 | [diff] [blame] | 173 | {} |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 174 | |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 175 | static SkImageInfo Make(int width, int height, SkColorType ct, SkAlphaType at, |
| 176 | SkColorProfileType pt = kLinear_SkColorProfileType) { |
| 177 | return SkImageInfo(width, height, ct, at, pt); |
commit-bot@chromium.org | 32678d9 | 2014-01-15 02:38:22 +0000 | [diff] [blame] | 178 | } |
| 179 | |
| 180 | /** |
| 181 | * Sets colortype to the native ARGB32 type. |
| 182 | */ |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 183 | static SkImageInfo MakeN32(int width, int height, SkAlphaType at, |
| 184 | SkColorProfileType pt = kLinear_SkColorProfileType) { |
| 185 | return SkImageInfo(width, height, kN32_SkColorType, at, pt); |
commit-bot@chromium.org | 32678d9 | 2014-01-15 02:38:22 +0000 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | /** |
| 189 | * Sets colortype to the native ARGB32 type, and the alphatype to premul. |
| 190 | */ |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 191 | static SkImageInfo MakeN32Premul(int width, int height, |
| 192 | SkColorProfileType pt = kLinear_SkColorProfileType) { |
| 193 | return SkImageInfo(width, height, kN32_SkColorType, kPremul_SkAlphaType, pt); |
commit-bot@chromium.org | 32678d9 | 2014-01-15 02:38:22 +0000 | [diff] [blame] | 194 | } |
skia.committer@gmail.com | d77b3ec | 2014-01-15 07:01:43 +0000 | [diff] [blame] | 195 | |
commit-bot@chromium.org | 32678d9 | 2014-01-15 02:38:22 +0000 | [diff] [blame] | 196 | /** |
| 197 | * Sets colortype to the native ARGB32 type, and the alphatype to premul. |
| 198 | */ |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 199 | static SkImageInfo MakeN32Premul(const SkISize& size, |
| 200 | SkColorProfileType pt = kLinear_SkColorProfileType) { |
| 201 | return MakeN32Premul(size.width(), size.height(), pt); |
commit-bot@chromium.org | 32678d9 | 2014-01-15 02:38:22 +0000 | [diff] [blame] | 202 | } |
skia.committer@gmail.com | d77b3ec | 2014-01-15 07:01:43 +0000 | [diff] [blame] | 203 | |
commit-bot@chromium.org | 32678d9 | 2014-01-15 02:38:22 +0000 | [diff] [blame] | 204 | static SkImageInfo MakeA8(int width, int height) { |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 205 | return SkImageInfo(width, height, kAlpha_8_SkColorType, kPremul_SkAlphaType, |
| 206 | kLinear_SkColorProfileType); |
commit-bot@chromium.org | 32678d9 | 2014-01-15 02:38:22 +0000 | [diff] [blame] | 207 | } |
skia.committer@gmail.com | d77b3ec | 2014-01-15 07:01:43 +0000 | [diff] [blame] | 208 | |
reed@google.com | 900ecf2 | 2014-02-20 20:55:37 +0000 | [diff] [blame] | 209 | static SkImageInfo MakeUnknown(int width, int height) { |
reed | 4497748 | 2015-02-27 10:23:00 -0800 | [diff] [blame] | 210 | return SkImageInfo(width, height, kUnknown_SkColorType, kUnknown_SkAlphaType, |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 211 | kLinear_SkColorProfileType); |
reed@google.com | 900ecf2 | 2014-02-20 20:55:37 +0000 | [diff] [blame] | 212 | } |
| 213 | |
reed | f252f64 | 2014-06-14 04:24:56 -0700 | [diff] [blame] | 214 | static SkImageInfo MakeUnknown() { |
reed | e5ea500 | 2014-09-03 11:54:58 -0700 | [diff] [blame] | 215 | return SkImageInfo(); |
reed | f252f64 | 2014-06-14 04:24:56 -0700 | [diff] [blame] | 216 | } |
| 217 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 218 | int width() const { return fWidth; } |
| 219 | int height() const { return fHeight; } |
| 220 | SkColorType colorType() const { return fColorType; } |
| 221 | SkAlphaType alphaType() const { return fAlphaType; } |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 222 | SkColorProfileType profileType() const { return fProfileType; } |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 223 | |
| 224 | bool isEmpty() const { return fWidth <= 0 || fHeight <= 0; } |
| 225 | |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 226 | bool isOpaque() const { |
| 227 | return SkAlphaTypeIsOpaque(fAlphaType); |
| 228 | } |
| 229 | |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 230 | bool isLinear() const { return kLinear_SkColorProfileType == fProfileType; } |
| 231 | bool isSRGB() const { return kSRGB_SkColorProfileType == fProfileType; } |
| 232 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 233 | SkISize dimensions() const { return SkISize::Make(fWidth, fHeight); } |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 234 | SkIRect bounds() const { return SkIRect::MakeWH(fWidth, fHeight); } |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 235 | |
reed | c77392e | 2014-06-02 13:07:26 -0700 | [diff] [blame] | 236 | /** |
| 237 | * Return a new ImageInfo with the same colortype and alphatype as this info, |
| 238 | * but with the specified width and height. |
| 239 | */ |
| 240 | SkImageInfo makeWH(int newWidth, int newHeight) const { |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 241 | return SkImageInfo::Make(newWidth, newHeight, fColorType, fAlphaType, fProfileType); |
reed | c77392e | 2014-06-02 13:07:26 -0700 | [diff] [blame] | 242 | } |
| 243 | |
reed | e5ea500 | 2014-09-03 11:54:58 -0700 | [diff] [blame] | 244 | SkImageInfo makeAlphaType(SkAlphaType newAlphaType) const { |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 245 | return SkImageInfo::Make(fWidth, fHeight, fColorType, newAlphaType, fProfileType); |
reed | e5ea500 | 2014-09-03 11:54:58 -0700 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | SkImageInfo makeColorType(SkColorType newColorType) const { |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 249 | return SkImageInfo::Make(fWidth, fHeight, newColorType, fAlphaType, fProfileType); |
reed | e5ea500 | 2014-09-03 11:54:58 -0700 | [diff] [blame] | 250 | } |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 251 | |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 252 | int bytesPerPixel() const { |
| 253 | return SkColorTypeBytesPerPixel(fColorType); |
| 254 | } |
| 255 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 256 | uint64_t minRowBytes64() const { |
| 257 | return sk_64_mul(fWidth, this->bytesPerPixel()); |
| 258 | } |
| 259 | |
mike@reedtribe.org | 169a0ed | 2014-02-11 02:20:17 +0000 | [diff] [blame] | 260 | size_t minRowBytes() const { |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 261 | return (size_t)this->minRowBytes64(); |
mike@reedtribe.org | 169a0ed | 2014-02-11 02:20:17 +0000 | [diff] [blame] | 262 | } |
skia.committer@gmail.com | 8ed6443 | 2014-02-11 03:02:13 +0000 | [diff] [blame] | 263 | |
reed | 92fc2ae | 2015-05-22 08:06:21 -0700 | [diff] [blame] | 264 | size_t computeOffset(int x, int y, size_t rowBytes) const { |
| 265 | SkASSERT((unsigned)x < (unsigned)fWidth); |
| 266 | SkASSERT((unsigned)y < (unsigned)fHeight); |
| 267 | return SkColorTypeComputeOffset(fColorType, x, y, rowBytes); |
| 268 | } |
| 269 | |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 270 | bool operator==(const SkImageInfo& other) const { |
| 271 | return 0 == memcmp(this, &other, sizeof(other)); |
| 272 | } |
| 273 | bool operator!=(const SkImageInfo& other) const { |
| 274 | return 0 != memcmp(this, &other, sizeof(other)); |
| 275 | } |
reed@google.com | 9230ea2 | 2013-12-09 22:01:03 +0000 | [diff] [blame] | 276 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 277 | void unflatten(SkReadBuffer&); |
| 278 | void flatten(SkWriteBuffer&) const; |
reed@google.com | 9230ea2 | 2013-12-09 22:01:03 +0000 | [diff] [blame] | 279 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 280 | int64_t getSafeSize64(size_t rowBytes) const { |
reed@google.com | 9230ea2 | 2013-12-09 22:01:03 +0000 | [diff] [blame] | 281 | if (0 == fHeight) { |
| 282 | return 0; |
| 283 | } |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 284 | return sk_64_mul(fHeight - 1, rowBytes) + fWidth * this->bytesPerPixel(); |
reed@google.com | 9230ea2 | 2013-12-09 22:01:03 +0000 | [diff] [blame] | 285 | } |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 286 | |
| 287 | size_t getSafeSize(size_t rowBytes) const { |
reed | de49988 | 2015-06-18 13:41:40 -0700 | [diff] [blame] | 288 | int64_t size = this->getSafeSize64(rowBytes); |
| 289 | if (!sk_64_isS32(size)) { |
| 290 | return 0; |
| 291 | } |
| 292 | return sk_64_asS32(size); |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 293 | } |
| 294 | |
| 295 | bool validRowBytes(size_t rowBytes) const { |
| 296 | uint64_t rb = sk_64_mul(fWidth, this->bytesPerPixel()); |
| 297 | return rowBytes >= rb; |
| 298 | } |
| 299 | |
| 300 | SkDEBUGCODE(void validate() const;) |
reed | e5ea500 | 2014-09-03 11:54:58 -0700 | [diff] [blame] | 301 | |
reed | e5ea500 | 2014-09-03 11:54:58 -0700 | [diff] [blame] | 302 | private: |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 303 | int fWidth; |
| 304 | int fHeight; |
| 305 | SkColorType fColorType; |
| 306 | SkAlphaType fAlphaType; |
reed | c2e6827 | 2015-08-01 07:03:20 -0700 | [diff] [blame] | 307 | SkColorProfileType fProfileType; |
reed | e5ea500 | 2014-09-03 11:54:58 -0700 | [diff] [blame] | 308 | |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 309 | SkImageInfo(int width, int height, SkColorType ct, SkAlphaType at, SkColorProfileType pt) |
reed | e5ea500 | 2014-09-03 11:54:58 -0700 | [diff] [blame] | 310 | : fWidth(width) |
| 311 | , fHeight(height) |
| 312 | , fColorType(ct) |
| 313 | , fAlphaType(at) |
reed | 7c74885 | 2014-11-10 08:57:21 -0800 | [diff] [blame] | 314 | , fProfileType(pt) |
reed | e5ea500 | 2014-09-03 11:54:58 -0700 | [diff] [blame] | 315 | {} |
reed@google.com | 3443fd8 | 2013-11-13 19:09:13 +0000 | [diff] [blame] | 316 | }; |
| 317 | |
| 318 | #endif |