epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 3 | * Copyright 2008 The Android Open Source Project |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 4 | * |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 7 | */ |
| 8 | |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 9 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 10 | #include "SkBitmap.h" |
| 11 | #include "SkColorPriv.h" |
| 12 | #include "SkDither.h" |
| 13 | #include "SkFlattenable.h" |
commit-bot@chromium.org | 6e3e422 | 2013-11-06 10:08:30 +0000 | [diff] [blame] | 14 | #include "SkImagePriv.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 15 | #include "SkMallocPixelRef.h" |
| 16 | #include "SkMask.h" |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 17 | #include "SkOrderedReadBuffer.h" |
| 18 | #include "SkOrderedWriteBuffer.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 19 | #include "SkPixelRef.h" |
| 20 | #include "SkThread.h" |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 21 | #include "SkUnPreMultiply.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 22 | #include "SkUtils.h" |
commit-bot@chromium.org | c0b7e10 | 2013-10-23 17:06:21 +0000 | [diff] [blame] | 23 | #include "SkValidationUtils.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 24 | #include "SkPackBits.h" |
| 25 | #include <new> |
| 26 | |
commit-bot@chromium.org | 4ad4ae9 | 2013-12-30 14:24:37 +0000 | [diff] [blame^] | 27 | static bool isPos32Bits(const Sk64& value) { |
| 28 | return !value.isNeg() && value.is32(); |
| 29 | } |
| 30 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 31 | struct MipLevel { |
| 32 | void* fPixels; |
| 33 | uint32_t fRowBytes; |
reed@android.com | f459a49 | 2009-03-27 12:33:50 +0000 | [diff] [blame] | 34 | uint32_t fWidth, fHeight; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 35 | }; |
| 36 | |
| 37 | struct SkBitmap::MipMap : SkNoncopyable { |
| 38 | int32_t fRefCnt; |
| 39 | int fLevelCount; |
| 40 | // MipLevel fLevel[fLevelCount]; |
| 41 | // Pixels[] |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 42 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 43 | static MipMap* Alloc(int levelCount, size_t pixelSize) { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 44 | if (levelCount < 0) { |
| 45 | return NULL; |
| 46 | } |
commit-bot@chromium.org | 4ad4ae9 | 2013-12-30 14:24:37 +0000 | [diff] [blame^] | 47 | Sk64 size; |
| 48 | size.setMul(levelCount + 1, sizeof(MipLevel)); |
| 49 | size.add(sizeof(MipMap)); |
| 50 | size.add(SkToS32(pixelSize)); |
| 51 | if (!isPos32Bits(size)) { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 52 | return NULL; |
| 53 | } |
commit-bot@chromium.org | 4ad4ae9 | 2013-12-30 14:24:37 +0000 | [diff] [blame^] | 54 | MipMap* mm = (MipMap*)sk_malloc_throw(size.get32()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 55 | mm->fRefCnt = 1; |
| 56 | mm->fLevelCount = levelCount; |
| 57 | return mm; |
| 58 | } |
| 59 | |
| 60 | const MipLevel* levels() const { return (const MipLevel*)(this + 1); } |
| 61 | MipLevel* levels() { return (MipLevel*)(this + 1); } |
| 62 | |
| 63 | const void* pixels() const { return levels() + fLevelCount; } |
| 64 | void* pixels() { return levels() + fLevelCount; } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 65 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 66 | void ref() { |
| 67 | if (SK_MaxS32 == sk_atomic_inc(&fRefCnt)) { |
| 68 | sk_throw(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 69 | } |
| 70 | } |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 71 | void unref() { |
| 72 | SkASSERT(fRefCnt > 0); |
| 73 | if (sk_atomic_dec(&fRefCnt) == 1) { |
| 74 | sk_free(this); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 75 | } |
| 76 | } |
| 77 | }; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 78 | |
| 79 | /////////////////////////////////////////////////////////////////////////////// |
| 80 | /////////////////////////////////////////////////////////////////////////////// |
| 81 | |
| 82 | SkBitmap::SkBitmap() { |
reed@android.com | 4516f47 | 2009-06-29 16:25:36 +0000 | [diff] [blame] | 83 | sk_bzero(this, sizeof(*this)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 84 | } |
| 85 | |
| 86 | SkBitmap::SkBitmap(const SkBitmap& src) { |
| 87 | SkDEBUGCODE(src.validate();) |
reed@android.com | 4516f47 | 2009-06-29 16:25:36 +0000 | [diff] [blame] | 88 | sk_bzero(this, sizeof(*this)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 89 | *this = src; |
| 90 | SkDEBUGCODE(this->validate();) |
| 91 | } |
| 92 | |
| 93 | SkBitmap::~SkBitmap() { |
| 94 | SkDEBUGCODE(this->validate();) |
| 95 | this->freePixels(); |
| 96 | } |
| 97 | |
| 98 | SkBitmap& SkBitmap::operator=(const SkBitmap& src) { |
| 99 | if (this != &src) { |
| 100 | this->freePixels(); |
| 101 | memcpy(this, &src, sizeof(src)); |
| 102 | |
| 103 | // inc src reference counts |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 104 | SkSafeRef(src.fPixelRef); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 105 | SkSafeRef(src.fMipMap); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 106 | |
| 107 | // we reset our locks if we get blown away |
| 108 | fPixelLockCount = 0; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 109 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 110 | /* The src could be in 3 states |
| 111 | 1. no pixelref, in which case we just copy/ref the pixels/ctable |
| 112 | 2. unlocked pixelref, pixels/ctable should be null |
| 113 | 3. locked pixelref, we should lock the ref again ourselves |
| 114 | */ |
| 115 | if (NULL == fPixelRef) { |
| 116 | // leave fPixels as it is |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 117 | SkSafeRef(fColorTable); // ref the user's ctable if present |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 118 | } else { // we have a pixelref, so pixels/ctable reflect it |
| 119 | // ignore the values from the memcpy |
| 120 | fPixels = NULL; |
| 121 | fColorTable = NULL; |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 122 | // Note that what to for genID is somewhat arbitrary. We have no |
| 123 | // way to track changes to raw pixels across multiple SkBitmaps. |
| 124 | // Would benefit from an SkRawPixelRef type created by |
| 125 | // setPixels. |
| 126 | // Just leave the memcpy'ed one but they'll get out of sync |
| 127 | // as soon either is modified. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 128 | } |
| 129 | } |
| 130 | |
| 131 | SkDEBUGCODE(this->validate();) |
| 132 | return *this; |
| 133 | } |
| 134 | |
| 135 | void SkBitmap::swap(SkBitmap& other) { |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 136 | SkTSwap(fColorTable, other.fColorTable); |
| 137 | SkTSwap(fPixelRef, other.fPixelRef); |
| 138 | SkTSwap(fPixelRefOffset, other.fPixelRefOffset); |
| 139 | SkTSwap(fPixelLockCount, other.fPixelLockCount); |
| 140 | SkTSwap(fMipMap, other.fMipMap); |
| 141 | SkTSwap(fPixels, other.fPixels); |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 142 | SkTSwap(fRowBytes, other.fRowBytes); |
| 143 | SkTSwap(fWidth, other.fWidth); |
| 144 | SkTSwap(fHeight, other.fHeight); |
| 145 | SkTSwap(fConfig, other.fConfig); |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 146 | SkTSwap(fAlphaType, other.fAlphaType); |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 147 | SkTSwap(fFlags, other.fFlags); |
| 148 | SkTSwap(fBytesPerPixel, other.fBytesPerPixel); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 149 | |
| 150 | SkDEBUGCODE(this->validate();) |
| 151 | } |
| 152 | |
| 153 | void SkBitmap::reset() { |
| 154 | this->freePixels(); |
reed@android.com | 4516f47 | 2009-06-29 16:25:36 +0000 | [diff] [blame] | 155 | sk_bzero(this, sizeof(*this)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 156 | } |
| 157 | |
| 158 | int SkBitmap::ComputeBytesPerPixel(SkBitmap::Config config) { |
| 159 | int bpp; |
| 160 | switch (config) { |
| 161 | case kNo_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 162 | bpp = 0; // not applicable |
| 163 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 164 | case kA8_Config: |
| 165 | case kIndex8_Config: |
| 166 | bpp = 1; |
| 167 | break; |
| 168 | case kRGB_565_Config: |
| 169 | case kARGB_4444_Config: |
| 170 | bpp = 2; |
| 171 | break; |
| 172 | case kARGB_8888_Config: |
| 173 | bpp = 4; |
| 174 | break; |
| 175 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 176 | SkDEBUGFAIL("unknown config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 177 | bpp = 0; // error |
| 178 | break; |
| 179 | } |
| 180 | return bpp; |
| 181 | } |
| 182 | |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 183 | size_t SkBitmap::ComputeRowBytes(Config c, int width) { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 184 | if (width < 0) { |
| 185 | return 0; |
| 186 | } |
| 187 | |
commit-bot@chromium.org | 4ad4ae9 | 2013-12-30 14:24:37 +0000 | [diff] [blame^] | 188 | Sk64 rowBytes; |
| 189 | rowBytes.setZero(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 190 | |
| 191 | switch (c) { |
| 192 | case kNo_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 193 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 194 | case kA8_Config: |
| 195 | case kIndex8_Config: |
commit-bot@chromium.org | 4ad4ae9 | 2013-12-30 14:24:37 +0000 | [diff] [blame^] | 196 | rowBytes.set(width); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 197 | break; |
| 198 | case kRGB_565_Config: |
| 199 | case kARGB_4444_Config: |
commit-bot@chromium.org | 4ad4ae9 | 2013-12-30 14:24:37 +0000 | [diff] [blame^] | 200 | rowBytes.set(width); |
| 201 | rowBytes.shiftLeft(1); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 202 | break; |
| 203 | case kARGB_8888_Config: |
commit-bot@chromium.org | 4ad4ae9 | 2013-12-30 14:24:37 +0000 | [diff] [blame^] | 204 | rowBytes.set(width); |
| 205 | rowBytes.shiftLeft(2); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 206 | break; |
| 207 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 208 | SkDEBUGFAIL("unknown config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 209 | break; |
| 210 | } |
commit-bot@chromium.org | 4ad4ae9 | 2013-12-30 14:24:37 +0000 | [diff] [blame^] | 211 | return isPos32Bits(rowBytes) ? rowBytes.get32() : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 212 | } |
| 213 | |
commit-bot@chromium.org | 4ad4ae9 | 2013-12-30 14:24:37 +0000 | [diff] [blame^] | 214 | Sk64 SkBitmap::ComputeSize64(Config c, int width, int height) { |
| 215 | Sk64 size; |
| 216 | size.setMul(SkToS32(SkBitmap::ComputeRowBytes(c, width)), height); |
| 217 | return size; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 218 | } |
| 219 | |
| 220 | size_t SkBitmap::ComputeSize(Config c, int width, int height) { |
commit-bot@chromium.org | 4ad4ae9 | 2013-12-30 14:24:37 +0000 | [diff] [blame^] | 221 | Sk64 size = SkBitmap::ComputeSize64(c, width, height); |
| 222 | return isPos32Bits(size) ? size.get32() : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 223 | } |
| 224 | |
commit-bot@chromium.org | 4ad4ae9 | 2013-12-30 14:24:37 +0000 | [diff] [blame^] | 225 | Sk64 SkBitmap::ComputeSafeSize64(Config config, |
| 226 | uint32_t width, |
| 227 | uint32_t height, |
| 228 | size_t rowBytes) { |
| 229 | Sk64 safeSize; |
| 230 | safeSize.setZero(); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 231 | if (height > 0) { |
commit-bot@chromium.org | 4ad4ae9 | 2013-12-30 14:24:37 +0000 | [diff] [blame^] | 232 | // TODO: Handle the case where the return value from |
| 233 | // ComputeRowBytes is more than 31 bits. |
| 234 | safeSize.set(SkToS32(ComputeRowBytes(config, width))); |
| 235 | Sk64 sizeAllButLastRow; |
| 236 | sizeAllButLastRow.setMul(height - 1, SkToS32(rowBytes)); |
| 237 | safeSize.add(sizeAllButLastRow); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 238 | } |
commit-bot@chromium.org | 4ad4ae9 | 2013-12-30 14:24:37 +0000 | [diff] [blame^] | 239 | SkASSERT(!safeSize.isNeg()); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 240 | return safeSize; |
| 241 | } |
| 242 | |
| 243 | size_t SkBitmap::ComputeSafeSize(Config config, |
| 244 | uint32_t width, |
| 245 | uint32_t height, |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 246 | size_t rowBytes) { |
commit-bot@chromium.org | 4ad4ae9 | 2013-12-30 14:24:37 +0000 | [diff] [blame^] | 247 | Sk64 safeSize = ComputeSafeSize64(config, width, height, rowBytes); |
| 248 | return (safeSize.is32() ? safeSize.get32() : 0); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 249 | } |
| 250 | |
reed@google.com | 86b2e43 | 2012-03-15 21:17:03 +0000 | [diff] [blame] | 251 | void SkBitmap::getBounds(SkRect* bounds) const { |
| 252 | SkASSERT(bounds); |
| 253 | bounds->set(0, 0, |
| 254 | SkIntToScalar(fWidth), SkIntToScalar(fHeight)); |
| 255 | } |
| 256 | |
reed@google.com | 80e1459 | 2012-03-16 14:58:07 +0000 | [diff] [blame] | 257 | void SkBitmap::getBounds(SkIRect* bounds) const { |
| 258 | SkASSERT(bounds); |
| 259 | bounds->set(0, 0, fWidth, fHeight); |
| 260 | } |
| 261 | |
reed@google.com | 86b2e43 | 2012-03-15 21:17:03 +0000 | [diff] [blame] | 262 | /////////////////////////////////////////////////////////////////////////////// |
| 263 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 264 | static bool validate_alphaType(SkBitmap::Config config, SkAlphaType alphaType, |
commit-bot@chromium.org | c0b7e10 | 2013-10-23 17:06:21 +0000 | [diff] [blame] | 265 | SkAlphaType* canonical = NULL) { |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 266 | switch (config) { |
| 267 | case SkBitmap::kNo_Config: |
| 268 | alphaType = kIgnore_SkAlphaType; |
| 269 | break; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 270 | case SkBitmap::kA8_Config: |
| 271 | if (kUnpremul_SkAlphaType == alphaType) { |
| 272 | alphaType = kPremul_SkAlphaType; |
| 273 | } |
| 274 | // fall-through |
| 275 | case SkBitmap::kIndex8_Config: |
| 276 | case SkBitmap::kARGB_4444_Config: |
| 277 | case SkBitmap::kARGB_8888_Config: |
| 278 | if (kIgnore_SkAlphaType == alphaType) { |
| 279 | return false; |
| 280 | } |
| 281 | break; |
| 282 | case SkBitmap::kRGB_565_Config: |
| 283 | alphaType = kOpaque_SkAlphaType; |
| 284 | break; |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 285 | default: |
| 286 | return false; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 287 | } |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 288 | if (canonical) { |
| 289 | *canonical = alphaType; |
| 290 | } |
| 291 | return true; |
| 292 | } |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 293 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 294 | bool SkBitmap::setConfig(Config config, int width, int height, size_t rowBytes, |
| 295 | SkAlphaType alphaType) { |
| 296 | if ((width | height) < 0) { |
reed@google.com | 9cd697c | 2013-10-21 14:12:13 +0000 | [diff] [blame] | 297 | goto BAD_CONFIG; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 298 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 299 | if (rowBytes == 0) { |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 300 | rowBytes = SkBitmap::ComputeRowBytes(config, width); |
halcanary@google.com | 4428734 | 2013-12-13 18:29:51 +0000 | [diff] [blame] | 301 | if (0 == rowBytes && kNo_Config != config && width > 0) { |
reed@google.com | 9cd697c | 2013-10-21 14:12:13 +0000 | [diff] [blame] | 302 | goto BAD_CONFIG; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 303 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 304 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 305 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 306 | if (!validate_alphaType(config, alphaType, &alphaType)) { |
reed@google.com | 9cd697c | 2013-10-21 14:12:13 +0000 | [diff] [blame] | 307 | goto BAD_CONFIG; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 308 | } |
| 309 | |
| 310 | this->freePixels(); |
| 311 | |
| 312 | fConfig = SkToU8(config); |
| 313 | fAlphaType = SkToU8(alphaType); |
reed@android.com | f459a49 | 2009-03-27 12:33:50 +0000 | [diff] [blame] | 314 | fWidth = width; |
| 315 | fHeight = height; |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 316 | fRowBytes = SkToU32(rowBytes); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 317 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 318 | fBytesPerPixel = (uint8_t)ComputeBytesPerPixel(config); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 319 | |
| 320 | SkDEBUGCODE(this->validate();) |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 321 | return true; |
agl@chromium.org | 6b8cb25 | 2009-06-01 23:52:37 +0000 | [diff] [blame] | 322 | |
reed@android.com | 9e0c2fc | 2009-06-02 18:54:28 +0000 | [diff] [blame] | 323 | // if we got here, we had an error, so we reset the bitmap to empty |
reed@google.com | 9cd697c | 2013-10-21 14:12:13 +0000 | [diff] [blame] | 324 | BAD_CONFIG: |
agl@chromium.org | 6b8cb25 | 2009-06-01 23:52:37 +0000 | [diff] [blame] | 325 | this->reset(); |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 326 | return false; |
| 327 | } |
| 328 | |
commit-bot@chromium.org | 6e3e422 | 2013-11-06 10:08:30 +0000 | [diff] [blame] | 329 | bool SkBitmap::setConfig(const SkImageInfo& info, size_t rowBytes) { |
| 330 | return this->setConfig(SkImageInfoToBitmapConfig(info), info.fWidth, |
| 331 | info.fHeight, rowBytes, info.fAlphaType); |
| 332 | } |
| 333 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 334 | bool SkBitmap::setAlphaType(SkAlphaType alphaType) { |
| 335 | if (!validate_alphaType(this->config(), alphaType, &alphaType)) { |
| 336 | return false; |
| 337 | } |
| 338 | fAlphaType = SkToU8(alphaType); |
| 339 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 340 | } |
| 341 | |
| 342 | void SkBitmap::updatePixelsFromRef() const { |
| 343 | if (NULL != fPixelRef) { |
| 344 | if (fPixelLockCount > 0) { |
reed@google.com | ff0da4f | 2012-05-17 13:14:52 +0000 | [diff] [blame] | 345 | SkASSERT(fPixelRef->isLocked()); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 346 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 347 | void* p = fPixelRef->pixels(); |
| 348 | if (NULL != p) { |
| 349 | p = (char*)p + fPixelRefOffset; |
| 350 | } |
| 351 | fPixels = p; |
| 352 | SkRefCnt_SafeAssign(fColorTable, fPixelRef->colorTable()); |
| 353 | } else { |
| 354 | SkASSERT(0 == fPixelLockCount); |
| 355 | fPixels = NULL; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 356 | if (fColorTable) { |
| 357 | fColorTable->unref(); |
| 358 | fColorTable = NULL; |
| 359 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 360 | } |
| 361 | } |
| 362 | } |
| 363 | |
reed@google.com | 9230ea2 | 2013-12-09 22:01:03 +0000 | [diff] [blame] | 364 | static bool config_to_colorType(SkBitmap::Config config, SkColorType* ctOut) { |
| 365 | SkColorType ct; |
| 366 | switch (config) { |
| 367 | case SkBitmap::kA8_Config: |
| 368 | ct = kAlpha_8_SkColorType; |
| 369 | break; |
| 370 | case SkBitmap::kIndex8_Config: |
| 371 | ct = kIndex_8_SkColorType; |
| 372 | break; |
| 373 | case SkBitmap::kRGB_565_Config: |
| 374 | ct = kRGB_565_SkColorType; |
| 375 | break; |
| 376 | case SkBitmap::kARGB_4444_Config: |
| 377 | ct = kARGB_4444_SkColorType; |
| 378 | break; |
| 379 | case SkBitmap::kARGB_8888_Config: |
| 380 | ct = kPMColor_SkColorType; |
| 381 | break; |
| 382 | case SkBitmap::kNo_Config: |
| 383 | default: |
| 384 | return false; |
| 385 | } |
| 386 | if (ctOut) { |
| 387 | *ctOut = ct; |
| 388 | } |
| 389 | return true; |
| 390 | } |
| 391 | |
| 392 | bool SkBitmap::asImageInfo(SkImageInfo* info) const { |
| 393 | SkColorType ct; |
| 394 | if (!config_to_colorType(this->config(), &ct)) { |
| 395 | return false; |
| 396 | } |
| 397 | if (info) { |
| 398 | info->fWidth = fWidth; |
| 399 | info->fHeight = fHeight; |
| 400 | info->fAlphaType = this->alphaType(); |
| 401 | info->fColorType = ct; |
| 402 | } |
| 403 | return true; |
| 404 | } |
| 405 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 406 | SkPixelRef* SkBitmap::setPixelRef(SkPixelRef* pr, size_t offset) { |
| 407 | // do this first, we that we never have a non-zero offset with a null ref |
| 408 | if (NULL == pr) { |
| 409 | offset = 0; |
| 410 | } |
| 411 | |
| 412 | if (fPixelRef != pr || fPixelRefOffset != offset) { |
| 413 | if (fPixelRef != pr) { |
| 414 | this->freePixels(); |
| 415 | SkASSERT(NULL == fPixelRef); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 416 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 417 | SkSafeRef(pr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 418 | fPixelRef = pr; |
| 419 | } |
| 420 | fPixelRefOffset = offset; |
| 421 | this->updatePixelsFromRef(); |
| 422 | } |
| 423 | |
| 424 | SkDEBUGCODE(this->validate();) |
| 425 | return pr; |
| 426 | } |
| 427 | |
| 428 | void SkBitmap::lockPixels() const { |
djsollen@google.com | 7c6d264 | 2013-08-06 12:19:38 +0000 | [diff] [blame] | 429 | if (NULL != fPixelRef && 0 == sk_atomic_inc(&fPixelLockCount)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 430 | fPixelRef->lockPixels(); |
| 431 | this->updatePixelsFromRef(); |
| 432 | } |
| 433 | SkDEBUGCODE(this->validate();) |
| 434 | } |
| 435 | |
| 436 | void SkBitmap::unlockPixels() const { |
| 437 | SkASSERT(NULL == fPixelRef || fPixelLockCount > 0); |
| 438 | |
djsollen@google.com | 7c6d264 | 2013-08-06 12:19:38 +0000 | [diff] [blame] | 439 | if (NULL != fPixelRef && 1 == sk_atomic_dec(&fPixelLockCount)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 440 | fPixelRef->unlockPixels(); |
| 441 | this->updatePixelsFromRef(); |
| 442 | } |
| 443 | SkDEBUGCODE(this->validate();) |
| 444 | } |
| 445 | |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 446 | bool SkBitmap::lockPixelsAreWritable() const { |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 447 | return (fPixelRef) ? fPixelRef->lockPixelsAreWritable() : false; |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 448 | } |
| 449 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 450 | void SkBitmap::setPixels(void* p, SkColorTable* ctable) { |
reed@google.com | 8e1034e | 2012-07-30 13:16:35 +0000 | [diff] [blame] | 451 | if (NULL == p) { |
| 452 | this->setPixelRef(NULL, 0); |
| 453 | return; |
| 454 | } |
| 455 | |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 456 | SkImageInfo info; |
| 457 | if (!this->asImageInfo(&info)) { |
| 458 | this->setPixelRef(NULL, 0); |
| 459 | return; |
| 460 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 461 | |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 462 | SkPixelRef* pr = SkMallocPixelRef::NewDirect(info, p, fRowBytes, ctable); |
| 463 | if (NULL == pr) { |
| 464 | this->setPixelRef(NULL, 0); |
| 465 | return; |
| 466 | } |
| 467 | |
| 468 | this->setPixelRef(pr)->unref(); |
| 469 | |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 470 | // since we're already allocated, we lockPixels right away |
| 471 | this->lockPixels(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 472 | SkDEBUGCODE(this->validate();) |
| 473 | } |
| 474 | |
| 475 | bool SkBitmap::allocPixels(Allocator* allocator, SkColorTable* ctable) { |
| 476 | HeapAllocator stdalloc; |
| 477 | |
| 478 | if (NULL == allocator) { |
| 479 | allocator = &stdalloc; |
| 480 | } |
| 481 | return allocator->allocPixelRef(this, ctable); |
| 482 | } |
| 483 | |
| 484 | void SkBitmap::freePixels() { |
| 485 | // if we're gonna free the pixels, we certainly need to free the mipmap |
| 486 | this->freeMipMap(); |
| 487 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 488 | if (fColorTable) { |
| 489 | fColorTable->unref(); |
| 490 | fColorTable = NULL; |
| 491 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 492 | |
| 493 | if (NULL != fPixelRef) { |
| 494 | if (fPixelLockCount > 0) { |
| 495 | fPixelRef->unlockPixels(); |
| 496 | } |
| 497 | fPixelRef->unref(); |
| 498 | fPixelRef = NULL; |
| 499 | fPixelRefOffset = 0; |
| 500 | } |
| 501 | fPixelLockCount = 0; |
| 502 | fPixels = NULL; |
| 503 | } |
| 504 | |
| 505 | void SkBitmap::freeMipMap() { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 506 | if (fMipMap) { |
| 507 | fMipMap->unref(); |
| 508 | fMipMap = NULL; |
| 509 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 510 | } |
| 511 | |
| 512 | uint32_t SkBitmap::getGenerationID() const { |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 513 | return (fPixelRef) ? fPixelRef->getGenerationID() : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 514 | } |
| 515 | |
| 516 | void SkBitmap::notifyPixelsChanged() const { |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 517 | SkASSERT(!this->isImmutable()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 518 | if (fPixelRef) { |
| 519 | fPixelRef->notifyPixelsChanged(); |
| 520 | } |
| 521 | } |
| 522 | |
commit-bot@chromium.org | b8d00db | 2013-06-26 19:18:23 +0000 | [diff] [blame] | 523 | GrTexture* SkBitmap::getTexture() const { |
reed@android.com | ce4e53a | 2010-09-09 16:01:26 +0000 | [diff] [blame] | 524 | return fPixelRef ? fPixelRef->getTexture() : NULL; |
| 525 | } |
| 526 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 527 | /////////////////////////////////////////////////////////////////////////////// |
| 528 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 529 | /** We explicitly use the same allocator for our pixels that SkMask does, |
| 530 | so that we can freely assign memory allocated by one class to the other. |
| 531 | */ |
| 532 | bool SkBitmap::HeapAllocator::allocPixelRef(SkBitmap* dst, |
| 533 | SkColorTable* ctable) { |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 534 | SkImageInfo info; |
| 535 | if (!dst->asImageInfo(&info)) { |
| 536 | // SkDebugf("unsupported config for info %d\n", dst->config()); |
| 537 | return false; |
| 538 | } |
skia.committer@gmail.com | 96f5fa0 | 2013-12-16 07:01:40 +0000 | [diff] [blame] | 539 | |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 540 | SkPixelRef* pr = SkMallocPixelRef::NewAllocate(info, dst->rowBytes(), |
| 541 | ctable); |
| 542 | if (NULL == pr) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 543 | return false; |
| 544 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 545 | |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 546 | dst->setPixelRef(pr, 0)->unref(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 547 | // since we're already allocated, we lockPixels right away |
| 548 | dst->lockPixels(); |
| 549 | return true; |
| 550 | } |
| 551 | |
| 552 | /////////////////////////////////////////////////////////////////////////////// |
| 553 | |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 554 | size_t SkBitmap::getSafeSize() const { |
| 555 | // This is intended to be a size_t version of ComputeSafeSize64(), just |
| 556 | // faster. The computation is meant to be identical. |
| 557 | return (fHeight ? ((fHeight - 1) * fRowBytes) + |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 558 | ComputeRowBytes(this->config(), fWidth): 0); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 559 | } |
| 560 | |
commit-bot@chromium.org | 4ad4ae9 | 2013-12-30 14:24:37 +0000 | [diff] [blame^] | 561 | Sk64 SkBitmap::getSafeSize64() const { |
| 562 | return ComputeSafeSize64(this->config(), fWidth, fHeight, fRowBytes); |
| 563 | } |
| 564 | |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 565 | bool SkBitmap::copyPixelsTo(void* const dst, size_t dstSize, |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 566 | size_t dstRowBytes, bool preserveDstPad) const { |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 567 | |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 568 | if (0 == dstRowBytes) { |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 569 | dstRowBytes = fRowBytes; |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 570 | } |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 571 | |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 572 | if (dstRowBytes < ComputeRowBytes(this->config(), fWidth) || |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 573 | dst == NULL || (getPixels() == NULL && pixelRef() == NULL)) |
| 574 | return false; |
| 575 | |
bsalomon@google.com | c698097 | 2011-11-02 19:57:21 +0000 | [diff] [blame] | 576 | if (!preserveDstPad && static_cast<uint32_t>(dstRowBytes) == fRowBytes) { |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 577 | size_t safeSize = this->getSafeSize(); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 578 | if (safeSize > dstSize || safeSize == 0) |
| 579 | return false; |
| 580 | else { |
| 581 | SkAutoLockPixels lock(*this); |
| 582 | // This implementation will write bytes beyond the end of each row, |
| 583 | // excluding the last row, if the bitmap's stride is greater than |
| 584 | // strictly required by the current config. |
| 585 | memcpy(dst, getPixels(), safeSize); |
| 586 | |
| 587 | return true; |
| 588 | } |
| 589 | } else { |
| 590 | // If destination has different stride than us, then copy line by line. |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 591 | if (ComputeSafeSize(this->config(), fWidth, fHeight, dstRowBytes) > |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 592 | dstSize) |
| 593 | return false; |
| 594 | else { |
| 595 | // Just copy what we need on each line. |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 596 | size_t rowBytes = ComputeRowBytes(this->config(), fWidth); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 597 | SkAutoLockPixels lock(*this); |
| 598 | const uint8_t* srcP = reinterpret_cast<const uint8_t*>(getPixels()); |
| 599 | uint8_t* dstP = reinterpret_cast<uint8_t*>(dst); |
| 600 | for (uint32_t row = 0; row < fHeight; |
| 601 | row++, srcP += fRowBytes, dstP += dstRowBytes) { |
| 602 | memcpy(dstP, srcP, rowBytes); |
| 603 | } |
| 604 | |
| 605 | return true; |
| 606 | } |
| 607 | } |
| 608 | } |
| 609 | |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 610 | /////////////////////////////////////////////////////////////////////////////// |
| 611 | |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 612 | bool SkBitmap::isImmutable() const { |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 613 | return fPixelRef ? fPixelRef->isImmutable() : |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 614 | fFlags & kImageIsImmutable_Flag; |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 615 | } |
| 616 | |
| 617 | void SkBitmap::setImmutable() { |
| 618 | if (fPixelRef) { |
| 619 | fPixelRef->setImmutable(); |
| 620 | } else { |
| 621 | fFlags |= kImageIsImmutable_Flag; |
| 622 | } |
| 623 | } |
| 624 | |
junov@google.com | 4ee7ae5 | 2011-06-30 17:30:49 +0000 | [diff] [blame] | 625 | bool SkBitmap::isVolatile() const { |
| 626 | return (fFlags & kImageIsVolatile_Flag) != 0; |
| 627 | } |
| 628 | |
| 629 | void SkBitmap::setIsVolatile(bool isVolatile) { |
| 630 | if (isVolatile) { |
| 631 | fFlags |= kImageIsVolatile_Flag; |
| 632 | } else { |
| 633 | fFlags &= ~kImageIsVolatile_Flag; |
| 634 | } |
| 635 | } |
| 636 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 637 | void* SkBitmap::getAddr(int x, int y) const { |
| 638 | SkASSERT((unsigned)x < (unsigned)this->width()); |
| 639 | SkASSERT((unsigned)y < (unsigned)this->height()); |
| 640 | |
| 641 | char* base = (char*)this->getPixels(); |
| 642 | if (base) { |
| 643 | base += y * this->rowBytes(); |
| 644 | switch (this->config()) { |
| 645 | case SkBitmap::kARGB_8888_Config: |
| 646 | base += x << 2; |
| 647 | break; |
| 648 | case SkBitmap::kARGB_4444_Config: |
| 649 | case SkBitmap::kRGB_565_Config: |
| 650 | base += x << 1; |
| 651 | break; |
| 652 | case SkBitmap::kA8_Config: |
| 653 | case SkBitmap::kIndex8_Config: |
| 654 | base += x; |
| 655 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 656 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 657 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 658 | SkDEBUGFAIL("Can't return addr for config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 659 | base = NULL; |
| 660 | break; |
| 661 | } |
| 662 | } |
| 663 | return base; |
| 664 | } |
| 665 | |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 666 | SkColor SkBitmap::getColor(int x, int y) const { |
| 667 | SkASSERT((unsigned)x < (unsigned)this->width()); |
| 668 | SkASSERT((unsigned)y < (unsigned)this->height()); |
| 669 | |
| 670 | switch (this->config()) { |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 671 | case SkBitmap::kA8_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 672 | uint8_t* addr = this->getAddr8(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 673 | return SkColorSetA(0, addr[0]); |
| 674 | } |
| 675 | case SkBitmap::kIndex8_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 676 | SkPMColor c = this->getIndex8Color(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 677 | return SkUnPreMultiply::PMColorToColor(c); |
| 678 | } |
| 679 | case SkBitmap::kRGB_565_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 680 | uint16_t* addr = this->getAddr16(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 681 | return SkPixel16ToColor(addr[0]); |
| 682 | } |
| 683 | case SkBitmap::kARGB_4444_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 684 | uint16_t* addr = this->getAddr16(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 685 | SkPMColor c = SkPixel4444ToPixel32(addr[0]); |
| 686 | return SkUnPreMultiply::PMColorToColor(c); |
| 687 | } |
| 688 | case SkBitmap::kARGB_8888_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 689 | uint32_t* addr = this->getAddr32(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 690 | return SkUnPreMultiply::PMColorToColor(addr[0]); |
| 691 | } |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 692 | case kNo_Config: |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 693 | default: |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 694 | SkASSERT(false); |
| 695 | return 0; |
| 696 | } |
| 697 | SkASSERT(false); // Not reached. |
| 698 | return 0; |
| 699 | } |
| 700 | |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 701 | bool SkBitmap::ComputeIsOpaque(const SkBitmap& bm) { |
| 702 | SkAutoLockPixels alp(bm); |
| 703 | if (!bm.getPixels()) { |
| 704 | return false; |
| 705 | } |
| 706 | |
| 707 | const int height = bm.height(); |
| 708 | const int width = bm.width(); |
| 709 | |
| 710 | switch (bm.config()) { |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 711 | case SkBitmap::kA8_Config: { |
| 712 | unsigned a = 0xFF; |
| 713 | for (int y = 0; y < height; ++y) { |
| 714 | const uint8_t* row = bm.getAddr8(0, y); |
| 715 | for (int x = 0; x < width; ++x) { |
| 716 | a &= row[x]; |
| 717 | } |
| 718 | if (0xFF != a) { |
| 719 | return false; |
| 720 | } |
| 721 | } |
| 722 | return true; |
| 723 | } break; |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 724 | case SkBitmap::kIndex8_Config: { |
| 725 | SkAutoLockColors alc(bm); |
| 726 | const SkPMColor* table = alc.colors(); |
| 727 | if (!table) { |
| 728 | return false; |
| 729 | } |
reed@google.com | 140d728 | 2013-01-07 20:25:04 +0000 | [diff] [blame] | 730 | SkPMColor c = (SkPMColor)~0; |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 731 | for (int i = bm.getColorTable()->count() - 1; i >= 0; --i) { |
| 732 | c &= table[i]; |
| 733 | } |
| 734 | return 0xFF == SkGetPackedA32(c); |
| 735 | } break; |
| 736 | case SkBitmap::kRGB_565_Config: |
| 737 | return true; |
| 738 | break; |
| 739 | case SkBitmap::kARGB_4444_Config: { |
| 740 | unsigned c = 0xFFFF; |
| 741 | for (int y = 0; y < height; ++y) { |
| 742 | const SkPMColor16* row = bm.getAddr16(0, y); |
| 743 | for (int x = 0; x < width; ++x) { |
| 744 | c &= row[x]; |
| 745 | } |
| 746 | if (0xF != SkGetPackedA4444(c)) { |
| 747 | return false; |
| 748 | } |
| 749 | } |
| 750 | return true; |
| 751 | } break; |
| 752 | case SkBitmap::kARGB_8888_Config: { |
reed@google.com | 140d728 | 2013-01-07 20:25:04 +0000 | [diff] [blame] | 753 | SkPMColor c = (SkPMColor)~0; |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 754 | for (int y = 0; y < height; ++y) { |
| 755 | const SkPMColor* row = bm.getAddr32(0, y); |
| 756 | for (int x = 0; x < width; ++x) { |
| 757 | c &= row[x]; |
| 758 | } |
| 759 | if (0xFF != SkGetPackedA32(c)) { |
| 760 | return false; |
| 761 | } |
| 762 | } |
| 763 | return true; |
| 764 | } |
| 765 | default: |
| 766 | break; |
| 767 | } |
| 768 | return false; |
| 769 | } |
| 770 | |
| 771 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 772 | /////////////////////////////////////////////////////////////////////////////// |
| 773 | /////////////////////////////////////////////////////////////////////////////// |
| 774 | |
reed@google.com | 45f746f | 2013-06-21 19:51:31 +0000 | [diff] [blame] | 775 | static uint16_t pack_8888_to_4444(unsigned a, unsigned r, unsigned g, unsigned b) { |
| 776 | unsigned pixel = (SkA32To4444(a) << SK_A4444_SHIFT) | |
| 777 | (SkR32To4444(r) << SK_R4444_SHIFT) | |
| 778 | (SkG32To4444(g) << SK_G4444_SHIFT) | |
| 779 | (SkB32To4444(b) << SK_B4444_SHIFT); |
| 780 | return SkToU16(pixel); |
| 781 | } |
| 782 | |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 783 | void SkBitmap::internalErase(const SkIRect& area, |
| 784 | U8CPU a, U8CPU r, U8CPU g, U8CPU b) const { |
| 785 | #ifdef SK_DEBUG |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 786 | SkDEBUGCODE(this->validate();) |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 787 | SkASSERT(!area.isEmpty()); |
| 788 | { |
reed@google.com | 92833f9 | 2013-06-28 19:47:43 +0000 | [diff] [blame] | 789 | SkIRect total = { 0, 0, this->width(), this->height() }; |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 790 | SkASSERT(total.contains(area)); |
| 791 | } |
| 792 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 793 | |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 794 | if (kNo_Config == fConfig || kIndex8_Config == fConfig) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 795 | return; |
| 796 | } |
| 797 | |
| 798 | SkAutoLockPixels alp(*this); |
| 799 | // perform this check after the lock call |
| 800 | if (!this->readyToDraw()) { |
| 801 | return; |
| 802 | } |
| 803 | |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 804 | int height = area.height(); |
| 805 | const int width = area.width(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 806 | const int rowBytes = fRowBytes; |
| 807 | |
| 808 | // make rgb premultiplied |
| 809 | if (255 != a) { |
| 810 | r = SkAlphaMul(r, a); |
| 811 | g = SkAlphaMul(g, a); |
| 812 | b = SkAlphaMul(b, a); |
| 813 | } |
| 814 | |
| 815 | switch (fConfig) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 816 | case kA8_Config: { |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 817 | uint8_t* p = this->getAddr8(area.fLeft, area.fTop); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 818 | while (--height >= 0) { |
| 819 | memset(p, a, width); |
| 820 | p += rowBytes; |
| 821 | } |
| 822 | break; |
| 823 | } |
reed@google.com | 45f746f | 2013-06-21 19:51:31 +0000 | [diff] [blame] | 824 | case kARGB_4444_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 825 | case kRGB_565_Config: { |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 826 | uint16_t* p = this->getAddr16(area.fLeft, area.fTop);; |
reed@google.com | 45f746f | 2013-06-21 19:51:31 +0000 | [diff] [blame] | 827 | uint16_t v; |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 828 | |
reed@google.com | 45f746f | 2013-06-21 19:51:31 +0000 | [diff] [blame] | 829 | if (kARGB_4444_Config == fConfig) { |
| 830 | v = pack_8888_to_4444(a, r, g, b); |
| 831 | } else { |
| 832 | v = SkPackRGB16(r >> (8 - SK_R16_BITS), |
| 833 | g >> (8 - SK_G16_BITS), |
| 834 | b >> (8 - SK_B16_BITS)); |
| 835 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 836 | while (--height >= 0) { |
| 837 | sk_memset16(p, v, width); |
| 838 | p = (uint16_t*)((char*)p + rowBytes); |
| 839 | } |
| 840 | break; |
| 841 | } |
| 842 | case kARGB_8888_Config: { |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 843 | uint32_t* p = this->getAddr32(area.fLeft, area.fTop); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 844 | uint32_t v = SkPackARGB32(a, r, g, b); |
| 845 | |
| 846 | while (--height >= 0) { |
| 847 | sk_memset32(p, v, width); |
| 848 | p = (uint32_t*)((char*)p + rowBytes); |
| 849 | } |
| 850 | break; |
| 851 | } |
| 852 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 853 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 854 | this->notifyPixelsChanged(); |
| 855 | } |
| 856 | |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 857 | void SkBitmap::eraseARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b) const { |
reed@google.com | 92833f9 | 2013-06-28 19:47:43 +0000 | [diff] [blame] | 858 | SkIRect area = { 0, 0, this->width(), this->height() }; |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 859 | if (!area.isEmpty()) { |
| 860 | this->internalErase(area, a, r, g, b); |
| 861 | } |
| 862 | } |
| 863 | |
| 864 | void SkBitmap::eraseArea(const SkIRect& rect, SkColor c) const { |
reed@google.com | 92833f9 | 2013-06-28 19:47:43 +0000 | [diff] [blame] | 865 | SkIRect area = { 0, 0, this->width(), this->height() }; |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 866 | if (area.intersect(rect)) { |
| 867 | this->internalErase(area, SkColorGetA(c), SkColorGetR(c), |
| 868 | SkColorGetG(c), SkColorGetB(c)); |
| 869 | } |
| 870 | } |
| 871 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 872 | ////////////////////////////////////////////////////////////////////////////////////// |
| 873 | ////////////////////////////////////////////////////////////////////////////////////// |
| 874 | |
| 875 | #define SUB_OFFSET_FAILURE ((size_t)-1) |
| 876 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 877 | /** |
| 878 | * Based on the Config and rowBytes() of bm, return the offset into an SkPixelRef of the pixel at |
| 879 | * (x, y). |
| 880 | * Note that the SkPixelRef does not need to be set yet. deepCopyTo takes advantage of this fact. |
| 881 | * Also note that (x, y) may be outside the range of (0 - width(), 0 - height()), so long as it is |
| 882 | * within the bounds of the SkPixelRef being used. |
| 883 | */ |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 884 | static size_t get_sub_offset(const SkBitmap& bm, int x, int y) { |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 885 | switch (bm.config()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 886 | case SkBitmap::kA8_Config: |
| 887 | case SkBitmap:: kIndex8_Config: |
| 888 | // x is fine as is for the calculation |
| 889 | break; |
| 890 | |
| 891 | case SkBitmap::kRGB_565_Config: |
| 892 | case SkBitmap::kARGB_4444_Config: |
| 893 | x <<= 1; |
| 894 | break; |
| 895 | |
| 896 | case SkBitmap::kARGB_8888_Config: |
| 897 | x <<= 2; |
| 898 | break; |
| 899 | |
| 900 | case SkBitmap::kNo_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 901 | default: |
| 902 | return SUB_OFFSET_FAILURE; |
| 903 | } |
| 904 | return y * bm.rowBytes() + x; |
| 905 | } |
| 906 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 907 | /** |
| 908 | * Using the pixelRefOffset(), rowBytes(), and Config of bm, determine the (x, y) coordinate of the |
| 909 | * upper left corner of bm relative to its SkPixelRef. |
| 910 | * x and y must be non-NULL. |
| 911 | */ |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 912 | bool get_upper_left_from_offset(SkBitmap::Config config, size_t offset, size_t rowBytes, |
scroggo@google.com | 61d6c9e | 2013-05-21 20:38:40 +0000 | [diff] [blame] | 913 | int32_t* x, int32_t* y); |
| 914 | bool get_upper_left_from_offset(SkBitmap::Config config, size_t offset, size_t rowBytes, |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 915 | int32_t* x, int32_t* y) { |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 916 | SkASSERT(x != NULL && y != NULL); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 917 | if (0 == offset) { |
| 918 | *x = *y = 0; |
| 919 | return true; |
| 920 | } |
| 921 | // Use integer division to find the correct y position. |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 922 | // The remainder will be the x position, after we reverse get_sub_offset. |
commit-bot@chromium.org | 2c86fbb | 2013-09-26 19:22:54 +0000 | [diff] [blame] | 923 | SkTDivMod(offset, rowBytes, y, x); |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 924 | switch (config) { |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 925 | case SkBitmap::kA8_Config: |
| 926 | // Fall through. |
| 927 | case SkBitmap::kIndex8_Config: |
| 928 | // x is unmodified |
| 929 | break; |
| 930 | |
| 931 | case SkBitmap::kRGB_565_Config: |
| 932 | // Fall through. |
| 933 | case SkBitmap::kARGB_4444_Config: |
| 934 | *x >>= 1; |
| 935 | break; |
| 936 | |
| 937 | case SkBitmap::kARGB_8888_Config: |
| 938 | *x >>= 2; |
| 939 | break; |
| 940 | |
| 941 | case SkBitmap::kNo_Config: |
| 942 | // Fall through. |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 943 | default: |
| 944 | return false; |
| 945 | } |
| 946 | return true; |
| 947 | } |
| 948 | |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 949 | static bool get_upper_left_from_offset(const SkBitmap& bm, int32_t* x, int32_t* y) { |
| 950 | return get_upper_left_from_offset(bm.config(), bm.pixelRefOffset(), bm.rowBytes(), x, y); |
| 951 | } |
| 952 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 953 | bool SkBitmap::extractSubset(SkBitmap* result, const SkIRect& subset) const { |
| 954 | SkDEBUGCODE(this->validate();) |
| 955 | |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 956 | if (NULL == result || NULL == fPixelRef) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 957 | return false; // no src pixels |
| 958 | } |
| 959 | |
| 960 | SkIRect srcRect, r; |
| 961 | srcRect.set(0, 0, this->width(), this->height()); |
| 962 | if (!r.intersect(srcRect, subset)) { |
| 963 | return false; // r is empty (i.e. no intersection) |
| 964 | } |
| 965 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 966 | if (fPixelRef->getTexture() != NULL) { |
| 967 | // Do a deep copy |
| 968 | SkPixelRef* pixelRef = fPixelRef->deepCopy(this->config(), &subset); |
| 969 | if (pixelRef != NULL) { |
| 970 | SkBitmap dst; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 971 | dst.setConfig(this->config(), subset.width(), subset.height(), 0, |
| 972 | this->alphaType()); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 973 | dst.setIsVolatile(this->isVolatile()); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 974 | dst.setPixelRef(pixelRef)->unref(); |
| 975 | SkDEBUGCODE(dst.validate()); |
| 976 | result->swap(dst); |
| 977 | return true; |
| 978 | } |
| 979 | } |
| 980 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 981 | // If the upper left of the rectangle was outside the bounds of this SkBitmap, we should have |
| 982 | // exited above. |
| 983 | SkASSERT(static_cast<unsigned>(r.fLeft) < static_cast<unsigned>(this->width())); |
| 984 | SkASSERT(static_cast<unsigned>(r.fTop) < static_cast<unsigned>(this->height())); |
| 985 | |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 986 | size_t offset = get_sub_offset(*this, r.fLeft, r.fTop); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 987 | if (SUB_OFFSET_FAILURE == offset) { |
| 988 | return false; // config not supported |
| 989 | } |
| 990 | |
| 991 | SkBitmap dst; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 992 | dst.setConfig(this->config(), r.width(), r.height(), this->rowBytes(), |
| 993 | this->alphaType()); |
skyostil@google.com | 0eb7576 | 2012-01-16 10:45:53 +0000 | [diff] [blame] | 994 | dst.setIsVolatile(this->isVolatile()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 995 | |
| 996 | if (fPixelRef) { |
| 997 | // share the pixelref with a custom offset |
| 998 | dst.setPixelRef(fPixelRef, fPixelRefOffset + offset); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 999 | } |
| 1000 | SkDEBUGCODE(dst.validate();) |
| 1001 | |
| 1002 | // we know we're good, so commit to result |
| 1003 | result->swap(dst); |
| 1004 | return true; |
| 1005 | } |
| 1006 | |
| 1007 | /////////////////////////////////////////////////////////////////////////////// |
| 1008 | |
| 1009 | #include "SkCanvas.h" |
| 1010 | #include "SkPaint.h" |
| 1011 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1012 | bool SkBitmap::canCopyTo(Config dstConfig) const { |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 1013 | if (this->config() == kNo_Config) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1014 | return false; |
| 1015 | } |
| 1016 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1017 | bool sameConfigs = (this->config() == dstConfig); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1018 | switch (dstConfig) { |
| 1019 | case kA8_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1020 | case kRGB_565_Config: |
| 1021 | case kARGB_8888_Config: |
| 1022 | break; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1023 | case kIndex8_Config: |
| 1024 | if (!sameConfigs) { |
| 1025 | return false; |
| 1026 | } |
| 1027 | break; |
scroggo@google.com | 8dc8bc5 | 2013-08-07 19:16:05 +0000 | [diff] [blame] | 1028 | case kARGB_4444_Config: |
| 1029 | return sameConfigs || kARGB_8888_Config == this->config(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1030 | default: |
| 1031 | return false; |
| 1032 | } |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1033 | return true; |
| 1034 | } |
| 1035 | |
| 1036 | bool SkBitmap::copyTo(SkBitmap* dst, Config dstConfig, Allocator* alloc) const { |
| 1037 | if (!this->canCopyTo(dstConfig)) { |
| 1038 | return false; |
| 1039 | } |
| 1040 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1041 | // if we have a texture, first get those pixels |
| 1042 | SkBitmap tmpSrc; |
| 1043 | const SkBitmap* src = this; |
| 1044 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1045 | if (fPixelRef) { |
| 1046 | SkIRect subset; |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 1047 | if (get_upper_left_from_offset(*this, &subset.fLeft, &subset.fTop)) { |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1048 | subset.fRight = subset.fLeft + fWidth; |
| 1049 | subset.fBottom = subset.fTop + fHeight; |
| 1050 | if (fPixelRef->readPixels(&tmpSrc, &subset)) { |
| 1051 | SkASSERT(tmpSrc.width() == this->width()); |
| 1052 | SkASSERT(tmpSrc.height() == this->height()); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1053 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1054 | // did we get lucky and we can just return tmpSrc? |
| 1055 | if (tmpSrc.config() == dstConfig && NULL == alloc) { |
| 1056 | dst->swap(tmpSrc); |
| 1057 | if (dst->pixelRef() && this->config() == dstConfig) { |
commit-bot@chromium.org | 50a3043 | 2013-10-24 17:44:27 +0000 | [diff] [blame] | 1058 | // TODO(scroggo): fix issue 1742 |
| 1059 | dst->pixelRef()->cloneGenID(*fPixelRef); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1060 | } |
| 1061 | return true; |
| 1062 | } |
| 1063 | |
| 1064 | // fall through to the raster case |
| 1065 | src = &tmpSrc; |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1066 | } |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1067 | } |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1068 | } |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1069 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1070 | // we lock this now, since we may need its colortable |
| 1071 | SkAutoLockPixels srclock(*src); |
| 1072 | if (!src->readyToDraw()) { |
| 1073 | return false; |
| 1074 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1075 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1076 | SkBitmap tmpDst; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 1077 | tmpDst.setConfig(dstConfig, src->width(), src->height(), 0, |
| 1078 | src->alphaType()); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1079 | |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1080 | // allocate colortable if srcConfig == kIndex8_Config |
| 1081 | SkColorTable* ctable = (dstConfig == kIndex8_Config) ? |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1082 | new SkColorTable(*src->getColorTable()) : NULL; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1083 | SkAutoUnref au(ctable); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1084 | if (!tmpDst.allocPixels(alloc, ctable)) { |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1085 | return false; |
| 1086 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1087 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1088 | if (!tmpDst.readyToDraw()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1089 | // allocator/lock failed |
| 1090 | return false; |
| 1091 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1092 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1093 | /* do memcpy for the same configs cases, else use drawing |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1094 | */ |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1095 | if (src->config() == dstConfig) { |
| 1096 | if (tmpDst.getSize() == src->getSize()) { |
| 1097 | memcpy(tmpDst.getPixels(), src->getPixels(), src->getSafeSize()); |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1098 | SkPixelRef* pixelRef = tmpDst.pixelRef(); |
commit-bot@chromium.org | 50a3043 | 2013-10-24 17:44:27 +0000 | [diff] [blame] | 1099 | if (NULL != pixelRef && NULL != fPixelRef) { |
| 1100 | // TODO(scroggo): fix issue 1742 |
| 1101 | pixelRef->cloneGenID(*fPixelRef); |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1102 | } |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1103 | } else { |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1104 | const char* srcP = reinterpret_cast<const char*>(src->getPixels()); |
| 1105 | char* dstP = reinterpret_cast<char*>(tmpDst.getPixels()); |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1106 | // to be sure we don't read too much, only copy our logical pixels |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1107 | size_t bytesToCopy = tmpDst.width() * tmpDst.bytesPerPixel(); |
| 1108 | for (int y = 0; y < tmpDst.height(); y++) { |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1109 | memcpy(dstP, srcP, bytesToCopy); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1110 | srcP += src->rowBytes(); |
| 1111 | dstP += tmpDst.rowBytes(); |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1112 | } |
| 1113 | } |
scroggo@google.com | 8dc8bc5 | 2013-08-07 19:16:05 +0000 | [diff] [blame] | 1114 | } else if (SkBitmap::kARGB_4444_Config == dstConfig |
| 1115 | && SkBitmap::kARGB_8888_Config == src->config()) { |
| 1116 | SkASSERT(src->height() == tmpDst.height()); |
| 1117 | SkASSERT(src->width() == tmpDst.width()); |
| 1118 | for (int y = 0; y < src->height(); ++y) { |
| 1119 | SkPMColor16* SK_RESTRICT dstRow = (SkPMColor16*) tmpDst.getAddr16(0, y); |
| 1120 | SkPMColor* SK_RESTRICT srcRow = (SkPMColor*) src->getAddr32(0, y); |
| 1121 | DITHER_4444_SCAN(y); |
| 1122 | for (int x = 0; x < src->width(); ++x) { |
| 1123 | dstRow[x] = SkDitherARGB32To4444(srcRow[x], |
| 1124 | DITHER_VALUE(x)); |
| 1125 | } |
| 1126 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1127 | } else { |
robertphillips@google.com | 0197b32 | 2013-10-10 15:48:16 +0000 | [diff] [blame] | 1128 | // Always clear the dest in case one of the blitters accesses it |
| 1129 | // TODO: switch the allocation of tmpDst to call sk_calloc_throw |
| 1130 | tmpDst.eraseColor(SK_ColorTRANSPARENT); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1131 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1132 | SkCanvas canvas(tmpDst); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1133 | SkPaint paint; |
| 1134 | |
| 1135 | paint.setDither(true); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1136 | canvas.drawBitmap(*src, 0, 0, &paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1137 | } |
| 1138 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1139 | dst->swap(tmpDst); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1140 | return true; |
| 1141 | } |
| 1142 | |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 1143 | bool SkBitmap::deepCopyTo(SkBitmap* dst, Config dstConfig) const { |
| 1144 | if (!this->canCopyTo(dstConfig)) { |
| 1145 | return false; |
| 1146 | } |
| 1147 | |
| 1148 | // If we have a PixelRef, and it supports deep copy, use it. |
| 1149 | // Currently supported only by texture-backed bitmaps. |
| 1150 | if (fPixelRef) { |
| 1151 | SkPixelRef* pixelRef = fPixelRef->deepCopy(dstConfig); |
| 1152 | if (pixelRef) { |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1153 | uint32_t rowBytes; |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1154 | if (dstConfig == fConfig) { |
commit-bot@chromium.org | 50a3043 | 2013-10-24 17:44:27 +0000 | [diff] [blame] | 1155 | // TODO(scroggo): fix issue 1742 |
| 1156 | pixelRef->cloneGenID(*fPixelRef); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1157 | // Use the same rowBytes as the original. |
| 1158 | rowBytes = fRowBytes; |
| 1159 | } else { |
| 1160 | // With the new config, an appropriate fRowBytes will be computed by setConfig. |
| 1161 | rowBytes = 0; |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1162 | } |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1163 | dst->setConfig(dstConfig, fWidth, fHeight, rowBytes); |
| 1164 | |
| 1165 | size_t pixelRefOffset; |
| 1166 | if (0 == fPixelRefOffset || dstConfig == fConfig) { |
| 1167 | // Use the same offset as the original. |
| 1168 | pixelRefOffset = fPixelRefOffset; |
| 1169 | } else { |
| 1170 | // Find the correct offset in the new config. This needs to be done after calling |
| 1171 | // setConfig so dst's fConfig and fRowBytes have been set properly. |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1172 | int32_t x, y; |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 1173 | if (!get_upper_left_from_offset(*this, &x, &y)) { |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1174 | return false; |
| 1175 | } |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 1176 | pixelRefOffset = get_sub_offset(*dst, x, y); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1177 | if (SUB_OFFSET_FAILURE == pixelRefOffset) { |
| 1178 | return false; |
| 1179 | } |
| 1180 | } |
| 1181 | dst->setPixelRef(pixelRef, pixelRefOffset)->unref(); |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 1182 | return true; |
| 1183 | } |
| 1184 | } |
| 1185 | |
| 1186 | if (this->getTexture()) { |
| 1187 | return false; |
| 1188 | } else { |
| 1189 | return this->copyTo(dst, dstConfig, NULL); |
| 1190 | } |
| 1191 | } |
| 1192 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1193 | /////////////////////////////////////////////////////////////////////////////// |
| 1194 | /////////////////////////////////////////////////////////////////////////////// |
| 1195 | |
| 1196 | static void downsampleby2_proc32(SkBitmap* dst, int x, int y, |
| 1197 | const SkBitmap& src) { |
| 1198 | x <<= 1; |
| 1199 | y <<= 1; |
| 1200 | const SkPMColor* p = src.getAddr32(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1201 | const SkPMColor* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1202 | SkPMColor c, ag, rb; |
| 1203 | |
| 1204 | c = *p; ag = (c >> 8) & 0xFF00FF; rb = c & 0xFF00FF; |
| 1205 | if (x < src.width() - 1) { |
| 1206 | p += 1; |
| 1207 | } |
| 1208 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1209 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1210 | p = baseP; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1211 | if (y < src.height() - 1) { |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1212 | p += src.rowBytes() >> 2; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1213 | } |
| 1214 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1215 | if (x < src.width() - 1) { |
| 1216 | p += 1; |
| 1217 | } |
| 1218 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1219 | |
| 1220 | *dst->getAddr32(x >> 1, y >> 1) = |
| 1221 | ((rb >> 2) & 0xFF00FF) | ((ag << 6) & 0xFF00FF00); |
| 1222 | } |
| 1223 | |
| 1224 | static inline uint32_t expand16(U16CPU c) { |
| 1225 | return (c & ~SK_G16_MASK_IN_PLACE) | ((c & SK_G16_MASK_IN_PLACE) << 16); |
| 1226 | } |
| 1227 | |
| 1228 | // returns dirt in the top 16bits, but we don't care, since we only |
| 1229 | // store the low 16bits. |
| 1230 | static inline U16CPU pack16(uint32_t c) { |
| 1231 | return (c & ~SK_G16_MASK_IN_PLACE) | ((c >> 16) & SK_G16_MASK_IN_PLACE); |
| 1232 | } |
| 1233 | |
| 1234 | static void downsampleby2_proc16(SkBitmap* dst, int x, int y, |
| 1235 | const SkBitmap& src) { |
| 1236 | x <<= 1; |
| 1237 | y <<= 1; |
| 1238 | const uint16_t* p = src.getAddr16(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1239 | const uint16_t* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1240 | SkPMColor c; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1241 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1242 | c = expand16(*p); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1243 | if (x < src.width() - 1) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1244 | p += 1; |
| 1245 | } |
| 1246 | c += expand16(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1247 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1248 | p = baseP; |
| 1249 | if (y < src.height() - 1) { |
| 1250 | p += src.rowBytes() >> 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1251 | } |
| 1252 | c += expand16(*p); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1253 | if (x < src.width() - 1) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1254 | p += 1; |
| 1255 | } |
| 1256 | c += expand16(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1257 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1258 | *dst->getAddr16(x >> 1, y >> 1) = (uint16_t)pack16(c >> 2); |
| 1259 | } |
| 1260 | |
| 1261 | static uint32_t expand4444(U16CPU c) { |
| 1262 | return (c & 0xF0F) | ((c & ~0xF0F) << 12); |
| 1263 | } |
| 1264 | |
| 1265 | static U16CPU collaps4444(uint32_t c) { |
| 1266 | return (c & 0xF0F) | ((c >> 12) & ~0xF0F); |
| 1267 | } |
| 1268 | |
| 1269 | static void downsampleby2_proc4444(SkBitmap* dst, int x, int y, |
| 1270 | const SkBitmap& src) { |
| 1271 | x <<= 1; |
| 1272 | y <<= 1; |
| 1273 | const uint16_t* p = src.getAddr16(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1274 | const uint16_t* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1275 | uint32_t c; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1276 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1277 | c = expand4444(*p); |
| 1278 | if (x < src.width() - 1) { |
| 1279 | p += 1; |
| 1280 | } |
| 1281 | c += expand4444(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1282 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1283 | p = baseP; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1284 | if (y < src.height() - 1) { |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1285 | p += src.rowBytes() >> 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1286 | } |
| 1287 | c += expand4444(*p); |
| 1288 | if (x < src.width() - 1) { |
| 1289 | p += 1; |
| 1290 | } |
| 1291 | c += expand4444(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1292 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1293 | *dst->getAddr16(x >> 1, y >> 1) = (uint16_t)collaps4444(c >> 2); |
| 1294 | } |
| 1295 | |
| 1296 | void SkBitmap::buildMipMap(bool forceRebuild) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1297 | if (forceRebuild) |
| 1298 | this->freeMipMap(); |
| 1299 | else if (fMipMap) |
| 1300 | return; // we're already built |
| 1301 | |
| 1302 | SkASSERT(NULL == fMipMap); |
| 1303 | |
| 1304 | void (*proc)(SkBitmap* dst, int x, int y, const SkBitmap& src); |
| 1305 | |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 1306 | const SkBitmap::Config config = this->config(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1307 | |
| 1308 | switch (config) { |
| 1309 | case kARGB_8888_Config: |
| 1310 | proc = downsampleby2_proc32; |
| 1311 | break; |
| 1312 | case kRGB_565_Config: |
| 1313 | proc = downsampleby2_proc16; |
| 1314 | break; |
| 1315 | case kARGB_4444_Config: |
| 1316 | proc = downsampleby2_proc4444; |
| 1317 | break; |
| 1318 | case kIndex8_Config: |
| 1319 | case kA8_Config: |
| 1320 | default: |
| 1321 | return; // don't build mipmaps for these configs |
| 1322 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 1323 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1324 | SkAutoLockPixels alp(*this); |
| 1325 | if (!this->readyToDraw()) { |
| 1326 | return; |
| 1327 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1328 | |
| 1329 | // whip through our loop to compute the exact size needed |
| 1330 | size_t size = 0; |
| 1331 | int maxLevels = 0; |
| 1332 | { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1333 | int width = this->width(); |
| 1334 | int height = this->height(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1335 | for (;;) { |
| 1336 | width >>= 1; |
| 1337 | height >>= 1; |
| 1338 | if (0 == width || 0 == height) { |
| 1339 | break; |
| 1340 | } |
| 1341 | size += ComputeRowBytes(config, width) * height; |
| 1342 | maxLevels += 1; |
| 1343 | } |
| 1344 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 1345 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1346 | // nothing to build |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1347 | if (0 == maxLevels) { |
| 1348 | return; |
| 1349 | } |
| 1350 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1351 | SkBitmap srcBM(*this); |
| 1352 | srcBM.lockPixels(); |
| 1353 | if (!srcBM.readyToDraw()) { |
| 1354 | return; |
| 1355 | } |
| 1356 | |
| 1357 | MipMap* mm = MipMap::Alloc(maxLevels, size); |
| 1358 | if (NULL == mm) { |
| 1359 | return; |
| 1360 | } |
| 1361 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1362 | MipLevel* level = mm->levels(); |
| 1363 | uint8_t* addr = (uint8_t*)mm->pixels(); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1364 | int width = this->width(); |
| 1365 | int height = this->height(); |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1366 | uint32_t rowBytes; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1367 | SkBitmap dstBM; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1368 | |
| 1369 | for (int i = 0; i < maxLevels; i++) { |
| 1370 | width >>= 1; |
| 1371 | height >>= 1; |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1372 | rowBytes = SkToU32(ComputeRowBytes(config, width)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1373 | |
| 1374 | level[i].fPixels = addr; |
reed@android.com | f459a49 | 2009-03-27 12:33:50 +0000 | [diff] [blame] | 1375 | level[i].fWidth = width; |
| 1376 | level[i].fHeight = height; |
reed@android.com | 49f0ff2 | 2009-03-19 21:52:42 +0000 | [diff] [blame] | 1377 | level[i].fRowBytes = rowBytes; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1378 | |
| 1379 | dstBM.setConfig(config, width, height, rowBytes); |
| 1380 | dstBM.setPixels(addr); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1381 | |
bungeman@google.com | 7cf0e9e | 2012-07-25 16:09:10 +0000 | [diff] [blame] | 1382 | srcBM.lockPixels(); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1383 | for (int y = 0; y < height; y++) { |
| 1384 | for (int x = 0; x < width; x++) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1385 | proc(&dstBM, x, y, srcBM); |
| 1386 | } |
| 1387 | } |
bungeman@google.com | 7cf0e9e | 2012-07-25 16:09:10 +0000 | [diff] [blame] | 1388 | srcBM.unlockPixels(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1389 | |
| 1390 | srcBM = dstBM; |
| 1391 | addr += height * rowBytes; |
| 1392 | } |
| 1393 | SkASSERT(addr == (uint8_t*)mm->pixels() + size); |
| 1394 | fMipMap = mm; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1395 | } |
| 1396 | |
| 1397 | bool SkBitmap::hasMipMap() const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1398 | return fMipMap != NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1399 | } |
| 1400 | |
| 1401 | int SkBitmap::extractMipLevel(SkBitmap* dst, SkFixed sx, SkFixed sy) { |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 1402 | if (NULL == fMipMap) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1403 | return 0; |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 1404 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1405 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1406 | int level = ComputeMipLevel(sx, sy) >> 16; |
| 1407 | SkASSERT(level >= 0); |
| 1408 | if (level <= 0) { |
| 1409 | return 0; |
| 1410 | } |
| 1411 | |
| 1412 | if (level >= fMipMap->fLevelCount) { |
| 1413 | level = fMipMap->fLevelCount - 1; |
| 1414 | } |
| 1415 | if (dst) { |
| 1416 | const MipLevel& mip = fMipMap->levels()[level - 1]; |
| 1417 | dst->setConfig((SkBitmap::Config)this->config(), |
| 1418 | mip.fWidth, mip.fHeight, mip.fRowBytes); |
| 1419 | dst->setPixels(mip.fPixels); |
| 1420 | } |
| 1421 | return level; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1422 | } |
| 1423 | |
| 1424 | SkFixed SkBitmap::ComputeMipLevel(SkFixed sx, SkFixed sy) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1425 | sx = SkAbs32(sx); |
| 1426 | sy = SkAbs32(sy); |
| 1427 | if (sx < sy) { |
| 1428 | sx = sy; |
| 1429 | } |
| 1430 | if (sx < SK_Fixed1) { |
| 1431 | return 0; |
| 1432 | } |
| 1433 | int clz = SkCLZ(sx); |
| 1434 | SkASSERT(clz >= 1 && clz <= 15); |
| 1435 | return SkIntToFixed(15 - clz) + ((unsigned)(sx << (clz + 1)) >> 16); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1436 | } |
| 1437 | |
| 1438 | /////////////////////////////////////////////////////////////////////////////// |
| 1439 | |
tomhudson@google.com | a87cd2a | 2011-06-15 16:50:27 +0000 | [diff] [blame] | 1440 | static bool GetBitmapAlpha(const SkBitmap& src, uint8_t* SK_RESTRICT alpha, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1441 | int alphaRowBytes) { |
| 1442 | SkASSERT(alpha != NULL); |
| 1443 | SkASSERT(alphaRowBytes >= src.width()); |
| 1444 | |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 1445 | SkBitmap::Config config = src.config(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1446 | int w = src.width(); |
| 1447 | int h = src.height(); |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1448 | size_t rb = src.rowBytes(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1449 | |
reed@android.com | 1cdcb51 | 2009-08-24 19:11:00 +0000 | [diff] [blame] | 1450 | SkAutoLockPixels alp(src); |
| 1451 | if (!src.readyToDraw()) { |
| 1452 | // zero out the alpha buffer and return |
| 1453 | while (--h >= 0) { |
| 1454 | memset(alpha, 0, w); |
| 1455 | alpha += alphaRowBytes; |
| 1456 | } |
| 1457 | return false; |
| 1458 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 1459 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1460 | if (SkBitmap::kA8_Config == config && !src.isOpaque()) { |
| 1461 | const uint8_t* s = src.getAddr8(0, 0); |
| 1462 | while (--h >= 0) { |
| 1463 | memcpy(alpha, s, w); |
| 1464 | s += rb; |
| 1465 | alpha += alphaRowBytes; |
| 1466 | } |
| 1467 | } else if (SkBitmap::kARGB_8888_Config == config && !src.isOpaque()) { |
| 1468 | const SkPMColor* SK_RESTRICT s = src.getAddr32(0, 0); |
| 1469 | while (--h >= 0) { |
| 1470 | for (int x = 0; x < w; x++) { |
| 1471 | alpha[x] = SkGetPackedA32(s[x]); |
| 1472 | } |
| 1473 | s = (const SkPMColor*)((const char*)s + rb); |
| 1474 | alpha += alphaRowBytes; |
| 1475 | } |
| 1476 | } else if (SkBitmap::kARGB_4444_Config == config && !src.isOpaque()) { |
| 1477 | const SkPMColor16* SK_RESTRICT s = src.getAddr16(0, 0); |
| 1478 | while (--h >= 0) { |
| 1479 | for (int x = 0; x < w; x++) { |
| 1480 | alpha[x] = SkPacked4444ToA32(s[x]); |
| 1481 | } |
| 1482 | s = (const SkPMColor16*)((const char*)s + rb); |
| 1483 | alpha += alphaRowBytes; |
| 1484 | } |
| 1485 | } else if (SkBitmap::kIndex8_Config == config && !src.isOpaque()) { |
| 1486 | SkColorTable* ct = src.getColorTable(); |
| 1487 | if (ct) { |
| 1488 | const SkPMColor* SK_RESTRICT table = ct->lockColors(); |
| 1489 | const uint8_t* SK_RESTRICT s = src.getAddr8(0, 0); |
| 1490 | while (--h >= 0) { |
| 1491 | for (int x = 0; x < w; x++) { |
| 1492 | alpha[x] = SkGetPackedA32(table[s[x]]); |
| 1493 | } |
| 1494 | s += rb; |
| 1495 | alpha += alphaRowBytes; |
| 1496 | } |
reed@google.com | 0a6151d | 2013-10-10 14:44:56 +0000 | [diff] [blame] | 1497 | ct->unlockColors(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1498 | } |
| 1499 | } else { // src is opaque, so just fill alpha[] with 0xFF |
| 1500 | memset(alpha, 0xFF, h * alphaRowBytes); |
| 1501 | } |
reed@android.com | 1cdcb51 | 2009-08-24 19:11:00 +0000 | [diff] [blame] | 1502 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1503 | } |
| 1504 | |
| 1505 | #include "SkPaint.h" |
| 1506 | #include "SkMaskFilter.h" |
| 1507 | #include "SkMatrix.h" |
| 1508 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1509 | bool SkBitmap::extractAlpha(SkBitmap* dst, const SkPaint* paint, |
djsollen@google.com | 57f4969 | 2011-02-23 20:46:31 +0000 | [diff] [blame] | 1510 | Allocator *allocator, SkIPoint* offset) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1511 | SkDEBUGCODE(this->validate();) |
| 1512 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1513 | SkBitmap tmpBitmap; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1514 | SkMatrix identity; |
| 1515 | SkMask srcM, dstM; |
| 1516 | |
| 1517 | srcM.fBounds.set(0, 0, this->width(), this->height()); |
| 1518 | srcM.fRowBytes = SkAlign4(this->width()); |
| 1519 | srcM.fFormat = SkMask::kA8_Format; |
| 1520 | |
| 1521 | SkMaskFilter* filter = paint ? paint->getMaskFilter() : NULL; |
| 1522 | |
| 1523 | // compute our (larger?) dst bounds if we have a filter |
| 1524 | if (NULL != filter) { |
| 1525 | identity.reset(); |
| 1526 | srcM.fImage = NULL; |
| 1527 | if (!filter->filterMask(&dstM, srcM, identity, NULL)) { |
| 1528 | goto NO_FILTER_CASE; |
| 1529 | } |
| 1530 | dstM.fRowBytes = SkAlign4(dstM.fBounds.width()); |
| 1531 | } else { |
| 1532 | NO_FILTER_CASE: |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1533 | tmpBitmap.setConfig(SkBitmap::kA8_Config, this->width(), this->height(), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1534 | srcM.fRowBytes); |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1535 | if (!tmpBitmap.allocPixels(allocator, NULL)) { |
| 1536 | // Allocation of pixels for alpha bitmap failed. |
| 1537 | SkDebugf("extractAlpha failed to allocate (%d,%d) alpha bitmap\n", |
| 1538 | tmpBitmap.width(), tmpBitmap.height()); |
| 1539 | return false; |
| 1540 | } |
| 1541 | GetBitmapAlpha(*this, tmpBitmap.getAddr8(0, 0), srcM.fRowBytes); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1542 | if (offset) { |
| 1543 | offset->set(0, 0); |
| 1544 | } |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1545 | tmpBitmap.swap(*dst); |
| 1546 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1547 | } |
bungeman@google.com | 02f5584 | 2011-10-04 21:25:00 +0000 | [diff] [blame] | 1548 | srcM.fImage = SkMask::AllocImage(srcM.computeImageSize()); |
| 1549 | SkAutoMaskFreeImage srcCleanup(srcM.fImage); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1550 | |
| 1551 | GetBitmapAlpha(*this, srcM.fImage, srcM.fRowBytes); |
| 1552 | if (!filter->filterMask(&dstM, srcM, identity, NULL)) { |
| 1553 | goto NO_FILTER_CASE; |
| 1554 | } |
bungeman@google.com | 02f5584 | 2011-10-04 21:25:00 +0000 | [diff] [blame] | 1555 | SkAutoMaskFreeImage dstCleanup(dstM.fImage); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1556 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1557 | tmpBitmap.setConfig(SkBitmap::kA8_Config, dstM.fBounds.width(), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1558 | dstM.fBounds.height(), dstM.fRowBytes); |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1559 | if (!tmpBitmap.allocPixels(allocator, NULL)) { |
| 1560 | // Allocation of pixels for alpha bitmap failed. |
| 1561 | SkDebugf("extractAlpha failed to allocate (%d,%d) alpha bitmap\n", |
| 1562 | tmpBitmap.width(), tmpBitmap.height()); |
| 1563 | return false; |
| 1564 | } |
| 1565 | memcpy(tmpBitmap.getPixels(), dstM.fImage, dstM.computeImageSize()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1566 | if (offset) { |
| 1567 | offset->set(dstM.fBounds.fLeft, dstM.fBounds.fTop); |
| 1568 | } |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1569 | SkDEBUGCODE(tmpBitmap.validate();) |
| 1570 | |
| 1571 | tmpBitmap.swap(*dst); |
| 1572 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1573 | } |
| 1574 | |
| 1575 | /////////////////////////////////////////////////////////////////////////////// |
| 1576 | |
| 1577 | enum { |
| 1578 | SERIALIZE_PIXELTYPE_NONE, |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 1579 | SERIALIZE_PIXELTYPE_REF_DATA |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1580 | }; |
| 1581 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1582 | void SkBitmap::flatten(SkFlattenableWriteBuffer& buffer) const { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1583 | buffer.writeInt(fWidth); |
| 1584 | buffer.writeInt(fHeight); |
| 1585 | buffer.writeInt(fRowBytes); |
| 1586 | buffer.writeInt(fConfig); |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 1587 | buffer.writeInt(fAlphaType); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1588 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1589 | if (fPixelRef) { |
djsollen@google.com | 5370cd9 | 2012-03-28 20:47:01 +0000 | [diff] [blame] | 1590 | if (fPixelRef->getFactory()) { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1591 | buffer.writeInt(SERIALIZE_PIXELTYPE_REF_DATA); |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1592 | buffer.writeUInt(SkToU32(fPixelRefOffset)); |
djsollen@google.com | 5370cd9 | 2012-03-28 20:47:01 +0000 | [diff] [blame] | 1593 | buffer.writeFlattenable(fPixelRef); |
| 1594 | return; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1595 | } |
| 1596 | // if we get here, we can't record the pixels |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1597 | buffer.writeInt(SERIALIZE_PIXELTYPE_NONE); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1598 | } else { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1599 | buffer.writeInt(SERIALIZE_PIXELTYPE_NONE); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1600 | } |
| 1601 | } |
| 1602 | |
| 1603 | void SkBitmap::unflatten(SkFlattenableReadBuffer& buffer) { |
| 1604 | this->reset(); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1605 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1606 | int width = buffer.readInt(); |
| 1607 | int height = buffer.readInt(); |
| 1608 | int rowBytes = buffer.readInt(); |
commit-bot@chromium.org | c0b7e10 | 2013-10-23 17:06:21 +0000 | [diff] [blame] | 1609 | Config config = (Config)buffer.readInt(); |
| 1610 | SkAlphaType alphaType = (SkAlphaType)buffer.readInt(); |
| 1611 | buffer.validate((width >= 0) && (height >= 0) && (rowBytes >= 0) && |
| 1612 | SkIsValidConfig(config) && validate_alphaType(config, alphaType)); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1613 | |
commit-bot@chromium.org | c2e9db3 | 2013-12-06 20:14:46 +0000 | [diff] [blame] | 1614 | bool configIsValid = this->setConfig(config, width, height, rowBytes, alphaType); |
| 1615 | // Note : Using (fRowBytes >= (fWidth * fBytesPerPixel)) in the following test can create false |
| 1616 | // positives if the multiplication causes an integer overflow. Use the division instead. |
| 1617 | buffer.validate(configIsValid && (fBytesPerPixel > 0) && |
| 1618 | ((fRowBytes / fBytesPerPixel) >= fWidth)); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1619 | |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1620 | int reftype = buffer.readInt(); |
commit-bot@chromium.org | ce33d60 | 2013-11-25 21:46:31 +0000 | [diff] [blame] | 1621 | if (buffer.validate((SERIALIZE_PIXELTYPE_REF_DATA == reftype) || |
| 1622 | (SERIALIZE_PIXELTYPE_NONE == reftype))) { |
| 1623 | switch (reftype) { |
| 1624 | case SERIALIZE_PIXELTYPE_REF_DATA: { |
| 1625 | size_t offset = buffer.readUInt(); |
| 1626 | SkPixelRef* pr = buffer.readPixelRef(); |
commit-bot@chromium.org | cd3b15c | 2013-12-04 17:06:49 +0000 | [diff] [blame] | 1627 | if (!buffer.validate((NULL == pr) || |
| 1628 | (pr->getAllocatedSizeInBytes() >= (offset + this->getSafeSize())))) { |
| 1629 | offset = 0; |
| 1630 | } |
commit-bot@chromium.org | ce33d60 | 2013-11-25 21:46:31 +0000 | [diff] [blame] | 1631 | SkSafeUnref(this->setPixelRef(pr, offset)); |
| 1632 | break; |
| 1633 | } |
| 1634 | case SERIALIZE_PIXELTYPE_NONE: |
| 1635 | break; |
| 1636 | default: |
| 1637 | SkDEBUGFAIL("unrecognized pixeltype in serialized data"); |
| 1638 | sk_throw(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1639 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1640 | } |
| 1641 | } |
| 1642 | |
| 1643 | /////////////////////////////////////////////////////////////////////////////// |
| 1644 | |
| 1645 | SkBitmap::RLEPixels::RLEPixels(int width, int height) { |
| 1646 | fHeight = height; |
commit-bot@chromium.org | 235002f | 2013-10-09 18:39:59 +0000 | [diff] [blame] | 1647 | fYPtrs = (uint8_t**)sk_calloc_throw(height * sizeof(uint8_t*)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1648 | } |
| 1649 | |
| 1650 | SkBitmap::RLEPixels::~RLEPixels() { |
| 1651 | sk_free(fYPtrs); |
| 1652 | } |
| 1653 | |
| 1654 | /////////////////////////////////////////////////////////////////////////////// |
| 1655 | |
| 1656 | #ifdef SK_DEBUG |
| 1657 | void SkBitmap::validate() const { |
| 1658 | SkASSERT(fConfig < kConfigCount); |
| 1659 | SkASSERT(fRowBytes >= (unsigned)ComputeRowBytes((Config)fConfig, fWidth)); |
scroggo@google.com | 8e990eb | 2013-06-14 15:55:56 +0000 | [diff] [blame] | 1660 | uint8_t allFlags = kImageIsOpaque_Flag | kImageIsVolatile_Flag | kImageIsImmutable_Flag; |
| 1661 | #ifdef SK_BUILD_FOR_ANDROID |
| 1662 | allFlags |= kHasHardwareMipMap_Flag; |
| 1663 | #endif |
| 1664 | SkASSERT(fFlags <= allFlags); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1665 | SkASSERT(fPixelLockCount >= 0); |
| 1666 | SkASSERT(NULL == fColorTable || (unsigned)fColorTable->getRefCnt() < 10000); |
| 1667 | SkASSERT((uint8_t)ComputeBytesPerPixel((Config)fConfig) == fBytesPerPixel); |
| 1668 | |
| 1669 | #if 0 // these asserts are not thread-correct, so disable for now |
| 1670 | if (fPixelRef) { |
| 1671 | if (fPixelLockCount > 0) { |
reed@google.com | ff0da4f | 2012-05-17 13:14:52 +0000 | [diff] [blame] | 1672 | SkASSERT(fPixelRef->isLocked()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1673 | } else { |
| 1674 | SkASSERT(NULL == fPixels); |
| 1675 | SkASSERT(NULL == fColorTable); |
| 1676 | } |
| 1677 | } |
| 1678 | #endif |
| 1679 | } |
| 1680 | #endif |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 1681 | |
| 1682 | #ifdef SK_DEVELOPER |
| 1683 | void SkBitmap::toString(SkString* str) const { |
| 1684 | |
| 1685 | static const char* gConfigNames[kConfigCount] = { |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 1686 | "NONE", "A8", "INDEX8", "565", "4444", "8888" |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 1687 | }; |
| 1688 | |
| 1689 | str->appendf("bitmap: ((%d, %d) %s", this->width(), this->height(), |
| 1690 | gConfigNames[this->config()]); |
| 1691 | |
| 1692 | str->append(" ("); |
| 1693 | if (this->isOpaque()) { |
| 1694 | str->append("opaque"); |
| 1695 | } else { |
| 1696 | str->append("transparent"); |
| 1697 | } |
| 1698 | if (this->isImmutable()) { |
| 1699 | str->append(", immutable"); |
| 1700 | } else { |
| 1701 | str->append(", not-immutable"); |
| 1702 | } |
| 1703 | str->append(")"); |
| 1704 | |
| 1705 | SkPixelRef* pr = this->pixelRef(); |
| 1706 | if (NULL == pr) { |
| 1707 | // show null or the explicit pixel address (rare) |
| 1708 | str->appendf(" pixels:%p", this->getPixels()); |
| 1709 | } else { |
| 1710 | const char* uri = pr->getURI(); |
| 1711 | if (NULL != uri) { |
| 1712 | str->appendf(" uri:\"%s\"", uri); |
| 1713 | } else { |
| 1714 | str->appendf(" pixelref:%p", pr); |
| 1715 | } |
| 1716 | } |
| 1717 | |
| 1718 | str->append(")"); |
| 1719 | } |
| 1720 | #endif |