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" |
| 14 | #include "SkMallocPixelRef.h" |
| 15 | #include "SkMask.h" |
| 16 | #include "SkPixelRef.h" |
| 17 | #include "SkThread.h" |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 18 | #include "SkUnPreMultiply.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 19 | #include "SkUtils.h" |
| 20 | #include "SkPackBits.h" |
| 21 | #include <new> |
| 22 | |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 23 | extern int32_t SkNextPixelRefGenerationID(); |
| 24 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 25 | static bool isPos32Bits(const Sk64& value) { |
| 26 | return !value.isNeg() && value.is32(); |
| 27 | } |
| 28 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 29 | struct MipLevel { |
| 30 | void* fPixels; |
| 31 | uint32_t fRowBytes; |
reed@android.com | f459a49 | 2009-03-27 12:33:50 +0000 | [diff] [blame] | 32 | uint32_t fWidth, fHeight; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 33 | }; |
| 34 | |
| 35 | struct SkBitmap::MipMap : SkNoncopyable { |
| 36 | int32_t fRefCnt; |
| 37 | int fLevelCount; |
| 38 | // MipLevel fLevel[fLevelCount]; |
| 39 | // Pixels[] |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 40 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 41 | static MipMap* Alloc(int levelCount, size_t pixelSize) { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 42 | if (levelCount < 0) { |
| 43 | return NULL; |
| 44 | } |
| 45 | Sk64 size; |
| 46 | size.setMul(levelCount + 1, sizeof(MipLevel)); |
| 47 | size.add(sizeof(MipMap)); |
| 48 | size.add(pixelSize); |
| 49 | if (!isPos32Bits(size)) { |
| 50 | return NULL; |
| 51 | } |
| 52 | MipMap* mm = (MipMap*)sk_malloc_throw(size.get32()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 53 | mm->fRefCnt = 1; |
| 54 | mm->fLevelCount = levelCount; |
| 55 | return mm; |
| 56 | } |
| 57 | |
| 58 | const MipLevel* levels() const { return (const MipLevel*)(this + 1); } |
| 59 | MipLevel* levels() { return (MipLevel*)(this + 1); } |
| 60 | |
| 61 | const void* pixels() const { return levels() + fLevelCount; } |
| 62 | void* pixels() { return levels() + fLevelCount; } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 63 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 64 | void ref() { |
| 65 | if (SK_MaxS32 == sk_atomic_inc(&fRefCnt)) { |
| 66 | sk_throw(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 67 | } |
| 68 | } |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 69 | void unref() { |
| 70 | SkASSERT(fRefCnt > 0); |
| 71 | if (sk_atomic_dec(&fRefCnt) == 1) { |
| 72 | sk_free(this); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 73 | } |
| 74 | } |
| 75 | }; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 76 | |
| 77 | /////////////////////////////////////////////////////////////////////////////// |
| 78 | /////////////////////////////////////////////////////////////////////////////// |
| 79 | |
| 80 | SkBitmap::SkBitmap() { |
reed@android.com | 4516f47 | 2009-06-29 16:25:36 +0000 | [diff] [blame] | 81 | sk_bzero(this, sizeof(*this)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 82 | } |
| 83 | |
| 84 | SkBitmap::SkBitmap(const SkBitmap& src) { |
| 85 | SkDEBUGCODE(src.validate();) |
reed@android.com | 4516f47 | 2009-06-29 16:25:36 +0000 | [diff] [blame] | 86 | sk_bzero(this, sizeof(*this)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 87 | *this = src; |
| 88 | SkDEBUGCODE(this->validate();) |
| 89 | } |
| 90 | |
| 91 | SkBitmap::~SkBitmap() { |
| 92 | SkDEBUGCODE(this->validate();) |
| 93 | this->freePixels(); |
| 94 | } |
| 95 | |
| 96 | SkBitmap& SkBitmap::operator=(const SkBitmap& src) { |
| 97 | if (this != &src) { |
| 98 | this->freePixels(); |
| 99 | memcpy(this, &src, sizeof(src)); |
| 100 | |
| 101 | // inc src reference counts |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 102 | SkSafeRef(src.fPixelRef); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 103 | SkSafeRef(src.fMipMap); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 104 | |
| 105 | // we reset our locks if we get blown away |
| 106 | fPixelLockCount = 0; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 107 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 108 | /* The src could be in 3 states |
| 109 | 1. no pixelref, in which case we just copy/ref the pixels/ctable |
| 110 | 2. unlocked pixelref, pixels/ctable should be null |
| 111 | 3. locked pixelref, we should lock the ref again ourselves |
| 112 | */ |
| 113 | if (NULL == fPixelRef) { |
| 114 | // leave fPixels as it is |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 115 | SkSafeRef(fColorTable); // ref the user's ctable if present |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 116 | } else { // we have a pixelref, so pixels/ctable reflect it |
| 117 | // ignore the values from the memcpy |
| 118 | fPixels = NULL; |
| 119 | fColorTable = NULL; |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 120 | // Note that what to for genID is somewhat arbitrary. We have no |
| 121 | // way to track changes to raw pixels across multiple SkBitmaps. |
| 122 | // Would benefit from an SkRawPixelRef type created by |
| 123 | // setPixels. |
| 124 | // Just leave the memcpy'ed one but they'll get out of sync |
| 125 | // as soon either is modified. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 126 | } |
| 127 | } |
| 128 | |
| 129 | SkDEBUGCODE(this->validate();) |
| 130 | return *this; |
| 131 | } |
| 132 | |
| 133 | void SkBitmap::swap(SkBitmap& other) { |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 134 | SkTSwap(fColorTable, other.fColorTable); |
| 135 | SkTSwap(fPixelRef, other.fPixelRef); |
| 136 | SkTSwap(fPixelRefOffset, other.fPixelRefOffset); |
| 137 | SkTSwap(fPixelLockCount, other.fPixelLockCount); |
| 138 | SkTSwap(fMipMap, other.fMipMap); |
| 139 | SkTSwap(fPixels, other.fPixels); |
| 140 | SkTSwap(fRawPixelGenerationID, other.fRawPixelGenerationID); |
| 141 | SkTSwap(fRowBytes, other.fRowBytes); |
| 142 | SkTSwap(fWidth, other.fWidth); |
| 143 | SkTSwap(fHeight, other.fHeight); |
| 144 | SkTSwap(fConfig, other.fConfig); |
| 145 | SkTSwap(fFlags, other.fFlags); |
| 146 | SkTSwap(fBytesPerPixel, other.fBytesPerPixel); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 147 | |
| 148 | SkDEBUGCODE(this->validate();) |
| 149 | } |
| 150 | |
| 151 | void SkBitmap::reset() { |
| 152 | this->freePixels(); |
reed@android.com | 4516f47 | 2009-06-29 16:25:36 +0000 | [diff] [blame] | 153 | sk_bzero(this, sizeof(*this)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 154 | } |
| 155 | |
| 156 | int SkBitmap::ComputeBytesPerPixel(SkBitmap::Config config) { |
| 157 | int bpp; |
| 158 | switch (config) { |
| 159 | case kNo_Config: |
| 160 | case kA1_Config: |
| 161 | bpp = 0; // not applicable |
| 162 | break; |
| 163 | case kRLE_Index8_Config: |
| 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 | |
| 183 | int 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 | |
| 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: |
| 193 | case kRLE_Index8_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 194 | break; |
| 195 | case kA1_Config: |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 196 | rowBytes.set(width); |
| 197 | rowBytes.add(7); |
| 198 | rowBytes.shiftRight(3); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 199 | break; |
| 200 | case kA8_Config: |
| 201 | case kIndex8_Config: |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 202 | rowBytes.set(width); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 203 | break; |
| 204 | case kRGB_565_Config: |
| 205 | case kARGB_4444_Config: |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 206 | rowBytes.set(width); |
| 207 | rowBytes.shiftLeft(1); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 208 | break; |
| 209 | case kARGB_8888_Config: |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 210 | rowBytes.set(width); |
| 211 | rowBytes.shiftLeft(2); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 212 | break; |
| 213 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 214 | SkDEBUGFAIL("unknown config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 215 | break; |
| 216 | } |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 217 | return isPos32Bits(rowBytes) ? rowBytes.get32() : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 218 | } |
| 219 | |
| 220 | Sk64 SkBitmap::ComputeSize64(Config c, int width, int height) { |
| 221 | Sk64 size; |
| 222 | size.setMul(SkBitmap::ComputeRowBytes(c, width), height); |
| 223 | return size; |
| 224 | } |
| 225 | |
| 226 | size_t SkBitmap::ComputeSize(Config c, int width, int height) { |
| 227 | Sk64 size = SkBitmap::ComputeSize64(c, width, height); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 228 | return isPos32Bits(size) ? size.get32() : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 229 | } |
| 230 | |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 231 | Sk64 SkBitmap::ComputeSafeSize64(Config config, |
| 232 | uint32_t width, |
| 233 | uint32_t height, |
| 234 | uint32_t rowBytes) { |
| 235 | Sk64 safeSize; |
| 236 | safeSize.setZero(); |
| 237 | if (height > 0) { |
| 238 | safeSize.set(ComputeRowBytes(config, width)); |
| 239 | Sk64 sizeAllButLastRow; |
| 240 | sizeAllButLastRow.setMul(height - 1, rowBytes); |
| 241 | safeSize.add(sizeAllButLastRow); |
| 242 | } |
| 243 | SkASSERT(!safeSize.isNeg()); |
| 244 | return safeSize; |
| 245 | } |
| 246 | |
| 247 | size_t SkBitmap::ComputeSafeSize(Config config, |
| 248 | uint32_t width, |
| 249 | uint32_t height, |
| 250 | uint32_t rowBytes) { |
| 251 | Sk64 safeSize = ComputeSafeSize64(config, width, height, rowBytes); |
| 252 | return (safeSize.is32() ? safeSize.get32() : 0); |
| 253 | } |
| 254 | |
reed@google.com | 86b2e43 | 2012-03-15 21:17:03 +0000 | [diff] [blame] | 255 | void SkBitmap::getBounds(SkRect* bounds) const { |
| 256 | SkASSERT(bounds); |
| 257 | bounds->set(0, 0, |
| 258 | SkIntToScalar(fWidth), SkIntToScalar(fHeight)); |
| 259 | } |
| 260 | |
reed@google.com | 80e1459 | 2012-03-16 14:58:07 +0000 | [diff] [blame] | 261 | void SkBitmap::getBounds(SkIRect* bounds) const { |
| 262 | SkASSERT(bounds); |
| 263 | bounds->set(0, 0, fWidth, fHeight); |
| 264 | } |
| 265 | |
reed@google.com | 86b2e43 | 2012-03-15 21:17:03 +0000 | [diff] [blame] | 266 | /////////////////////////////////////////////////////////////////////////////// |
| 267 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 268 | void SkBitmap::setConfig(Config c, int width, int height, int rowBytes) { |
| 269 | this->freePixels(); |
| 270 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 271 | if ((width | height | rowBytes) < 0) { |
agl@chromium.org | 6b8cb25 | 2009-06-01 23:52:37 +0000 | [diff] [blame] | 272 | goto err; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 273 | } |
| 274 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 275 | if (rowBytes == 0) { |
| 276 | rowBytes = SkBitmap::ComputeRowBytes(c, width); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 277 | if (0 == rowBytes && kNo_Config != c) { |
agl@chromium.org | 6b8cb25 | 2009-06-01 23:52:37 +0000 | [diff] [blame] | 278 | goto err; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 279 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 280 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 281 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 282 | fConfig = SkToU8(c); |
reed@android.com | f459a49 | 2009-03-27 12:33:50 +0000 | [diff] [blame] | 283 | fWidth = width; |
| 284 | fHeight = height; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 285 | fRowBytes = rowBytes; |
| 286 | |
| 287 | fBytesPerPixel = (uint8_t)ComputeBytesPerPixel(c); |
| 288 | |
| 289 | SkDEBUGCODE(this->validate();) |
reed@android.com | 9e0c2fc | 2009-06-02 18:54:28 +0000 | [diff] [blame] | 290 | return; |
agl@chromium.org | 6b8cb25 | 2009-06-01 23:52:37 +0000 | [diff] [blame] | 291 | |
reed@android.com | 9e0c2fc | 2009-06-02 18:54:28 +0000 | [diff] [blame] | 292 | // if we got here, we had an error, so we reset the bitmap to empty |
agl@chromium.org | 6b8cb25 | 2009-06-01 23:52:37 +0000 | [diff] [blame] | 293 | err: |
| 294 | this->reset(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 295 | } |
| 296 | |
| 297 | void SkBitmap::updatePixelsFromRef() const { |
| 298 | if (NULL != fPixelRef) { |
| 299 | if (fPixelLockCount > 0) { |
reed@google.com | ff0da4f | 2012-05-17 13:14:52 +0000 | [diff] [blame] | 300 | SkASSERT(fPixelRef->isLocked()); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 301 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 302 | void* p = fPixelRef->pixels(); |
| 303 | if (NULL != p) { |
| 304 | p = (char*)p + fPixelRefOffset; |
| 305 | } |
| 306 | fPixels = p; |
| 307 | SkRefCnt_SafeAssign(fColorTable, fPixelRef->colorTable()); |
| 308 | } else { |
| 309 | SkASSERT(0 == fPixelLockCount); |
| 310 | fPixels = NULL; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 311 | if (fColorTable) { |
| 312 | fColorTable->unref(); |
| 313 | fColorTable = NULL; |
| 314 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 315 | } |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | SkPixelRef* SkBitmap::setPixelRef(SkPixelRef* pr, size_t offset) { |
| 320 | // do this first, we that we never have a non-zero offset with a null ref |
| 321 | if (NULL == pr) { |
| 322 | offset = 0; |
| 323 | } |
| 324 | |
| 325 | if (fPixelRef != pr || fPixelRefOffset != offset) { |
| 326 | if (fPixelRef != pr) { |
| 327 | this->freePixels(); |
| 328 | SkASSERT(NULL == fPixelRef); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 329 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 330 | SkSafeRef(pr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 331 | fPixelRef = pr; |
| 332 | } |
| 333 | fPixelRefOffset = offset; |
| 334 | this->updatePixelsFromRef(); |
| 335 | } |
| 336 | |
| 337 | SkDEBUGCODE(this->validate();) |
| 338 | return pr; |
| 339 | } |
| 340 | |
| 341 | void SkBitmap::lockPixels() const { |
| 342 | if (NULL != fPixelRef && 1 == ++fPixelLockCount) { |
| 343 | fPixelRef->lockPixels(); |
| 344 | this->updatePixelsFromRef(); |
| 345 | } |
| 346 | SkDEBUGCODE(this->validate();) |
| 347 | } |
| 348 | |
| 349 | void SkBitmap::unlockPixels() const { |
| 350 | SkASSERT(NULL == fPixelRef || fPixelLockCount > 0); |
| 351 | |
| 352 | if (NULL != fPixelRef && 0 == --fPixelLockCount) { |
| 353 | fPixelRef->unlockPixels(); |
| 354 | this->updatePixelsFromRef(); |
| 355 | } |
| 356 | SkDEBUGCODE(this->validate();) |
| 357 | } |
| 358 | |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 359 | bool SkBitmap::lockPixelsAreWritable() const { |
| 360 | if (fPixelRef) { |
| 361 | return fPixelRef->lockPixelsAreWritable(); |
| 362 | } else { |
| 363 | return fPixels != NULL; |
| 364 | } |
| 365 | } |
| 366 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 367 | void SkBitmap::setPixels(void* p, SkColorTable* ctable) { |
| 368 | this->freePixels(); |
| 369 | fPixels = p; |
| 370 | SkRefCnt_SafeAssign(fColorTable, ctable); |
| 371 | |
| 372 | SkDEBUGCODE(this->validate();) |
| 373 | } |
| 374 | |
| 375 | bool SkBitmap::allocPixels(Allocator* allocator, SkColorTable* ctable) { |
| 376 | HeapAllocator stdalloc; |
| 377 | |
| 378 | if (NULL == allocator) { |
| 379 | allocator = &stdalloc; |
| 380 | } |
| 381 | return allocator->allocPixelRef(this, ctable); |
| 382 | } |
| 383 | |
| 384 | void SkBitmap::freePixels() { |
| 385 | // if we're gonna free the pixels, we certainly need to free the mipmap |
| 386 | this->freeMipMap(); |
| 387 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 388 | if (fColorTable) { |
| 389 | fColorTable->unref(); |
| 390 | fColorTable = NULL; |
| 391 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 392 | |
| 393 | if (NULL != fPixelRef) { |
| 394 | if (fPixelLockCount > 0) { |
| 395 | fPixelRef->unlockPixels(); |
| 396 | } |
| 397 | fPixelRef->unref(); |
| 398 | fPixelRef = NULL; |
| 399 | fPixelRefOffset = 0; |
| 400 | } |
| 401 | fPixelLockCount = 0; |
| 402 | fPixels = NULL; |
| 403 | } |
| 404 | |
| 405 | void SkBitmap::freeMipMap() { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 406 | if (fMipMap) { |
| 407 | fMipMap->unref(); |
| 408 | fMipMap = NULL; |
| 409 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 410 | } |
| 411 | |
| 412 | uint32_t SkBitmap::getGenerationID() const { |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 413 | if (fPixelRef) { |
| 414 | return fPixelRef->getGenerationID(); |
| 415 | } else { |
| 416 | SkASSERT(fPixels || !fRawPixelGenerationID); |
| 417 | if (fPixels && !fRawPixelGenerationID) { |
| 418 | fRawPixelGenerationID = SkNextPixelRefGenerationID(); |
| 419 | } |
| 420 | return fRawPixelGenerationID; |
| 421 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 422 | } |
| 423 | |
| 424 | void SkBitmap::notifyPixelsChanged() const { |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 425 | SkASSERT(!this->isImmutable()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 426 | if (fPixelRef) { |
| 427 | fPixelRef->notifyPixelsChanged(); |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 428 | } else { |
| 429 | fRawPixelGenerationID = 0; // will grab next ID in getGenerationID |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 430 | } |
| 431 | } |
| 432 | |
reed@android.com | ce4e53a | 2010-09-09 16:01:26 +0000 | [diff] [blame] | 433 | SkGpuTexture* SkBitmap::getTexture() const { |
| 434 | return fPixelRef ? fPixelRef->getTexture() : NULL; |
| 435 | } |
| 436 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 437 | /////////////////////////////////////////////////////////////////////////////// |
| 438 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 439 | /** We explicitly use the same allocator for our pixels that SkMask does, |
| 440 | so that we can freely assign memory allocated by one class to the other. |
| 441 | */ |
| 442 | bool SkBitmap::HeapAllocator::allocPixelRef(SkBitmap* dst, |
| 443 | SkColorTable* ctable) { |
| 444 | Sk64 size = dst->getSize64(); |
| 445 | if (size.isNeg() || !size.is32()) { |
| 446 | return false; |
| 447 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 448 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 449 | void* addr = sk_malloc_flags(size.get32(), 0); // returns NULL on failure |
| 450 | if (NULL == addr) { |
| 451 | return false; |
| 452 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 453 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 454 | dst->setPixelRef(new SkMallocPixelRef(addr, size.get32(), ctable))->unref(); |
| 455 | // since we're already allocated, we lockPixels right away |
| 456 | dst->lockPixels(); |
| 457 | return true; |
| 458 | } |
| 459 | |
| 460 | /////////////////////////////////////////////////////////////////////////////// |
| 461 | |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 462 | size_t SkBitmap::getSafeSize() const { |
| 463 | // This is intended to be a size_t version of ComputeSafeSize64(), just |
| 464 | // faster. The computation is meant to be identical. |
| 465 | return (fHeight ? ((fHeight - 1) * fRowBytes) + |
| 466 | ComputeRowBytes(getConfig(), fWidth): 0); |
| 467 | } |
| 468 | |
| 469 | Sk64 SkBitmap::getSafeSize64() const { |
| 470 | return ComputeSafeSize64(getConfig(), fWidth, fHeight, fRowBytes); |
| 471 | } |
| 472 | |
bsalomon@google.com | c698097 | 2011-11-02 19:57:21 +0000 | [diff] [blame] | 473 | bool SkBitmap::copyPixelsTo(void* const dst, size_t dstSize, |
| 474 | int dstRowBytes, bool preserveDstPad) const { |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 475 | |
| 476 | if (dstRowBytes == -1) |
| 477 | dstRowBytes = fRowBytes; |
| 478 | SkASSERT(dstRowBytes >= 0); |
| 479 | |
| 480 | if (getConfig() == kRLE_Index8_Config || |
| 481 | dstRowBytes < ComputeRowBytes(getConfig(), fWidth) || |
| 482 | dst == NULL || (getPixels() == NULL && pixelRef() == NULL)) |
| 483 | return false; |
| 484 | |
bsalomon@google.com | c698097 | 2011-11-02 19:57:21 +0000 | [diff] [blame] | 485 | if (!preserveDstPad && static_cast<uint32_t>(dstRowBytes) == fRowBytes) { |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 486 | size_t safeSize = getSafeSize(); |
| 487 | if (safeSize > dstSize || safeSize == 0) |
| 488 | return false; |
| 489 | else { |
| 490 | SkAutoLockPixels lock(*this); |
| 491 | // This implementation will write bytes beyond the end of each row, |
| 492 | // excluding the last row, if the bitmap's stride is greater than |
| 493 | // strictly required by the current config. |
| 494 | memcpy(dst, getPixels(), safeSize); |
| 495 | |
| 496 | return true; |
| 497 | } |
| 498 | } else { |
| 499 | // If destination has different stride than us, then copy line by line. |
| 500 | if (ComputeSafeSize(getConfig(), fWidth, fHeight, dstRowBytes) > |
| 501 | dstSize) |
| 502 | return false; |
| 503 | else { |
| 504 | // Just copy what we need on each line. |
| 505 | uint32_t rowBytes = ComputeRowBytes(getConfig(), fWidth); |
| 506 | SkAutoLockPixels lock(*this); |
| 507 | const uint8_t* srcP = reinterpret_cast<const uint8_t*>(getPixels()); |
| 508 | uint8_t* dstP = reinterpret_cast<uint8_t*>(dst); |
| 509 | for (uint32_t row = 0; row < fHeight; |
| 510 | row++, srcP += fRowBytes, dstP += dstRowBytes) { |
| 511 | memcpy(dstP, srcP, rowBytes); |
| 512 | } |
| 513 | |
| 514 | return true; |
| 515 | } |
| 516 | } |
| 517 | } |
| 518 | |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 519 | /////////////////////////////////////////////////////////////////////////////// |
| 520 | |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 521 | bool SkBitmap::isImmutable() const { |
| 522 | return fPixelRef ? fPixelRef->isImmutable() : |
| 523 | fFlags & kImageIsImmutable_Flag; |
| 524 | } |
| 525 | |
| 526 | void SkBitmap::setImmutable() { |
| 527 | if (fPixelRef) { |
| 528 | fPixelRef->setImmutable(); |
| 529 | } else { |
| 530 | fFlags |= kImageIsImmutable_Flag; |
| 531 | } |
| 532 | } |
| 533 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 534 | bool SkBitmap::isOpaque() const { |
| 535 | switch (fConfig) { |
| 536 | case kNo_Config: |
| 537 | return true; |
| 538 | |
| 539 | case kA1_Config: |
| 540 | case kA8_Config: |
| 541 | case kARGB_4444_Config: |
| 542 | case kARGB_8888_Config: |
| 543 | return (fFlags & kImageIsOpaque_Flag) != 0; |
| 544 | |
| 545 | case kIndex8_Config: |
| 546 | case kRLE_Index8_Config: { |
| 547 | uint32_t flags = 0; |
| 548 | |
| 549 | this->lockPixels(); |
| 550 | // if lockPixels failed, we may not have a ctable ptr |
| 551 | if (fColorTable) { |
| 552 | flags = fColorTable->getFlags(); |
| 553 | } |
| 554 | this->unlockPixels(); |
| 555 | |
| 556 | return (flags & SkColorTable::kColorsAreOpaque_Flag) != 0; |
| 557 | } |
| 558 | |
| 559 | case kRGB_565_Config: |
| 560 | return true; |
| 561 | |
| 562 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 563 | SkDEBUGFAIL("unknown bitmap config pased to isOpaque"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 564 | return false; |
| 565 | } |
| 566 | } |
| 567 | |
| 568 | void SkBitmap::setIsOpaque(bool isOpaque) { |
| 569 | /* we record this regardless of fConfig, though it is ignored in |
| 570 | isOpaque() for configs that can't support per-pixel alpha. |
| 571 | */ |
| 572 | if (isOpaque) { |
| 573 | fFlags |= kImageIsOpaque_Flag; |
| 574 | } else { |
| 575 | fFlags &= ~kImageIsOpaque_Flag; |
| 576 | } |
| 577 | } |
| 578 | |
junov@google.com | 4ee7ae5 | 2011-06-30 17:30:49 +0000 | [diff] [blame] | 579 | bool SkBitmap::isVolatile() const { |
| 580 | return (fFlags & kImageIsVolatile_Flag) != 0; |
| 581 | } |
| 582 | |
| 583 | void SkBitmap::setIsVolatile(bool isVolatile) { |
| 584 | if (isVolatile) { |
| 585 | fFlags |= kImageIsVolatile_Flag; |
| 586 | } else { |
| 587 | fFlags &= ~kImageIsVolatile_Flag; |
| 588 | } |
| 589 | } |
| 590 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 591 | void* SkBitmap::getAddr(int x, int y) const { |
| 592 | SkASSERT((unsigned)x < (unsigned)this->width()); |
| 593 | SkASSERT((unsigned)y < (unsigned)this->height()); |
| 594 | |
| 595 | char* base = (char*)this->getPixels(); |
| 596 | if (base) { |
| 597 | base += y * this->rowBytes(); |
| 598 | switch (this->config()) { |
| 599 | case SkBitmap::kARGB_8888_Config: |
| 600 | base += x << 2; |
| 601 | break; |
| 602 | case SkBitmap::kARGB_4444_Config: |
| 603 | case SkBitmap::kRGB_565_Config: |
| 604 | base += x << 1; |
| 605 | break; |
| 606 | case SkBitmap::kA8_Config: |
| 607 | case SkBitmap::kIndex8_Config: |
| 608 | base += x; |
| 609 | break; |
| 610 | case SkBitmap::kA1_Config: |
| 611 | base += x >> 3; |
| 612 | break; |
| 613 | case kRLE_Index8_Config: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 614 | SkDEBUGFAIL("Can't return addr for kRLE_Index8_Config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 615 | base = NULL; |
| 616 | break; |
| 617 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 618 | SkDEBUGFAIL("Can't return addr for config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 619 | base = NULL; |
| 620 | break; |
| 621 | } |
| 622 | } |
| 623 | return base; |
| 624 | } |
| 625 | |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 626 | SkColor SkBitmap::getColor(int x, int y) const { |
| 627 | SkASSERT((unsigned)x < (unsigned)this->width()); |
| 628 | SkASSERT((unsigned)y < (unsigned)this->height()); |
| 629 | |
| 630 | switch (this->config()) { |
| 631 | case SkBitmap::kA1_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 632 | uint8_t* addr = this->getAddr1(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 633 | uint8_t mask = 1 << (7 - (x % 8)); |
| 634 | if (addr[0] & mask) { |
| 635 | return SK_ColorBLACK; |
| 636 | } else { |
| 637 | return 0; |
| 638 | } |
| 639 | } |
| 640 | case SkBitmap::kA8_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 641 | uint8_t* addr = this->getAddr8(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 642 | return SkColorSetA(0, addr[0]); |
| 643 | } |
| 644 | case SkBitmap::kIndex8_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 645 | SkPMColor c = this->getIndex8Color(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 646 | return SkUnPreMultiply::PMColorToColor(c); |
| 647 | } |
| 648 | case SkBitmap::kRGB_565_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 649 | uint16_t* addr = this->getAddr16(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 650 | return SkPixel16ToColor(addr[0]); |
| 651 | } |
| 652 | case SkBitmap::kARGB_4444_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 653 | uint16_t* addr = this->getAddr16(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 654 | SkPMColor c = SkPixel4444ToPixel32(addr[0]); |
| 655 | return SkUnPreMultiply::PMColorToColor(c); |
| 656 | } |
| 657 | case SkBitmap::kARGB_8888_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 658 | uint32_t* addr = this->getAddr32(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 659 | return SkUnPreMultiply::PMColorToColor(addr[0]); |
| 660 | } |
| 661 | case kRLE_Index8_Config: { |
| 662 | uint8_t dst; |
| 663 | const SkBitmap::RLEPixels* rle = |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 664 | (const SkBitmap::RLEPixels*)this->getPixels(); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 665 | SkPackBits::Unpack8(&dst, x, 1, rle->packedAtY(y)); |
| 666 | return SkUnPreMultiply::PMColorToColor((*fColorTable)[dst]); |
| 667 | } |
| 668 | case kNo_Config: |
| 669 | case kConfigCount: |
| 670 | SkASSERT(false); |
| 671 | return 0; |
| 672 | } |
| 673 | SkASSERT(false); // Not reached. |
| 674 | return 0; |
| 675 | } |
| 676 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 677 | /////////////////////////////////////////////////////////////////////////////// |
| 678 | /////////////////////////////////////////////////////////////////////////////// |
| 679 | |
| 680 | void SkBitmap::eraseARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b) const { |
| 681 | SkDEBUGCODE(this->validate();) |
| 682 | |
| 683 | if (0 == fWidth || 0 == fHeight || |
| 684 | kNo_Config == fConfig || kIndex8_Config == fConfig) { |
| 685 | return; |
| 686 | } |
| 687 | |
| 688 | SkAutoLockPixels alp(*this); |
| 689 | // perform this check after the lock call |
| 690 | if (!this->readyToDraw()) { |
| 691 | return; |
| 692 | } |
| 693 | |
| 694 | int height = fHeight; |
| 695 | const int width = fWidth; |
| 696 | const int rowBytes = fRowBytes; |
| 697 | |
| 698 | // make rgb premultiplied |
| 699 | if (255 != a) { |
| 700 | r = SkAlphaMul(r, a); |
| 701 | g = SkAlphaMul(g, a); |
| 702 | b = SkAlphaMul(b, a); |
| 703 | } |
| 704 | |
| 705 | switch (fConfig) { |
| 706 | case kA1_Config: { |
| 707 | uint8_t* p = (uint8_t*)fPixels; |
| 708 | const int count = (width + 7) >> 3; |
| 709 | a = (a >> 7) ? 0xFF : 0; |
| 710 | SkASSERT(count <= rowBytes); |
| 711 | while (--height >= 0) { |
| 712 | memset(p, a, count); |
| 713 | p += rowBytes; |
| 714 | } |
| 715 | break; |
| 716 | } |
| 717 | case kA8_Config: { |
| 718 | uint8_t* p = (uint8_t*)fPixels; |
| 719 | while (--height >= 0) { |
| 720 | memset(p, a, width); |
| 721 | p += rowBytes; |
| 722 | } |
| 723 | break; |
| 724 | } |
| 725 | case kARGB_4444_Config: |
| 726 | case kRGB_565_Config: { |
| 727 | uint16_t* p = (uint16_t*)fPixels; |
| 728 | uint16_t v; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 729 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 730 | if (kARGB_4444_Config == fConfig) { |
| 731 | v = SkPackARGB4444(a >> 4, r >> 4, g >> 4, b >> 4); |
| 732 | } else { // kRGB_565_Config |
| 733 | v = SkPackRGB16(r >> (8 - SK_R16_BITS), g >> (8 - SK_G16_BITS), |
| 734 | b >> (8 - SK_B16_BITS)); |
| 735 | } |
| 736 | while (--height >= 0) { |
| 737 | sk_memset16(p, v, width); |
| 738 | p = (uint16_t*)((char*)p + rowBytes); |
| 739 | } |
| 740 | break; |
| 741 | } |
| 742 | case kARGB_8888_Config: { |
| 743 | uint32_t* p = (uint32_t*)fPixels; |
| 744 | uint32_t v = SkPackARGB32(a, r, g, b); |
| 745 | |
| 746 | while (--height >= 0) { |
| 747 | sk_memset32(p, v, width); |
| 748 | p = (uint32_t*)((char*)p + rowBytes); |
| 749 | } |
| 750 | break; |
| 751 | } |
| 752 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 753 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 754 | this->notifyPixelsChanged(); |
| 755 | } |
| 756 | |
| 757 | ////////////////////////////////////////////////////////////////////////////////////// |
| 758 | ////////////////////////////////////////////////////////////////////////////////////// |
| 759 | |
| 760 | #define SUB_OFFSET_FAILURE ((size_t)-1) |
| 761 | |
| 762 | static size_t getSubOffset(const SkBitmap& bm, int x, int y) { |
| 763 | SkASSERT((unsigned)x < (unsigned)bm.width()); |
| 764 | SkASSERT((unsigned)y < (unsigned)bm.height()); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 765 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 766 | switch (bm.getConfig()) { |
| 767 | case SkBitmap::kA8_Config: |
| 768 | case SkBitmap:: kIndex8_Config: |
| 769 | // x is fine as is for the calculation |
| 770 | break; |
| 771 | |
| 772 | case SkBitmap::kRGB_565_Config: |
| 773 | case SkBitmap::kARGB_4444_Config: |
| 774 | x <<= 1; |
| 775 | break; |
| 776 | |
| 777 | case SkBitmap::kARGB_8888_Config: |
| 778 | x <<= 2; |
| 779 | break; |
| 780 | |
| 781 | case SkBitmap::kNo_Config: |
| 782 | case SkBitmap::kA1_Config: |
| 783 | default: |
| 784 | return SUB_OFFSET_FAILURE; |
| 785 | } |
| 786 | return y * bm.rowBytes() + x; |
| 787 | } |
| 788 | |
| 789 | bool SkBitmap::extractSubset(SkBitmap* result, const SkIRect& subset) const { |
| 790 | SkDEBUGCODE(this->validate();) |
| 791 | |
| 792 | if (NULL == result || (NULL == fPixelRef && NULL == fPixels)) { |
| 793 | return false; // no src pixels |
| 794 | } |
| 795 | |
| 796 | SkIRect srcRect, r; |
| 797 | srcRect.set(0, 0, this->width(), this->height()); |
| 798 | if (!r.intersect(srcRect, subset)) { |
| 799 | return false; // r is empty (i.e. no intersection) |
| 800 | } |
| 801 | |
| 802 | if (kRLE_Index8_Config == fConfig) { |
| 803 | SkAutoLockPixels alp(*this); |
| 804 | // don't call readyToDraw(), since we can operate w/o a colortable |
| 805 | // at this stage |
| 806 | if (this->getPixels() == NULL) { |
| 807 | return false; |
| 808 | } |
| 809 | SkBitmap bm; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 810 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 811 | bm.setConfig(kIndex8_Config, r.width(), r.height()); |
| 812 | bm.allocPixels(this->getColorTable()); |
| 813 | if (NULL == bm.getPixels()) { |
| 814 | return false; |
| 815 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 816 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 817 | const RLEPixels* rle = (const RLEPixels*)this->getPixels(); |
| 818 | uint8_t* dst = bm.getAddr8(0, 0); |
| 819 | const int width = bm.width(); |
| 820 | const int rowBytes = bm.rowBytes(); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 821 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 822 | for (int y = r.fTop; y < r.fBottom; y++) { |
| 823 | SkPackBits::Unpack8(dst, r.fLeft, width, rle->packedAtY(y)); |
| 824 | dst += rowBytes; |
| 825 | } |
| 826 | result->swap(bm); |
| 827 | return true; |
| 828 | } |
| 829 | |
| 830 | size_t offset = getSubOffset(*this, r.fLeft, r.fTop); |
| 831 | if (SUB_OFFSET_FAILURE == offset) { |
| 832 | return false; // config not supported |
| 833 | } |
| 834 | |
| 835 | SkBitmap dst; |
| 836 | dst.setConfig(this->config(), r.width(), r.height(), this->rowBytes()); |
skyostil@google.com | 0eb7576 | 2012-01-16 10:45:53 +0000 | [diff] [blame] | 837 | dst.setIsVolatile(this->isVolatile()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 838 | |
| 839 | if (fPixelRef) { |
| 840 | // share the pixelref with a custom offset |
| 841 | dst.setPixelRef(fPixelRef, fPixelRefOffset + offset); |
| 842 | } else { |
| 843 | // share the pixels (owned by the caller) |
| 844 | dst.setPixels((char*)fPixels + offset, this->getColorTable()); |
| 845 | } |
| 846 | SkDEBUGCODE(dst.validate();) |
| 847 | |
| 848 | // we know we're good, so commit to result |
| 849 | result->swap(dst); |
| 850 | return true; |
| 851 | } |
| 852 | |
| 853 | /////////////////////////////////////////////////////////////////////////////// |
| 854 | |
| 855 | #include "SkCanvas.h" |
| 856 | #include "SkPaint.h" |
| 857 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 858 | bool SkBitmap::canCopyTo(Config dstConfig) const { |
| 859 | if (this->getConfig() == kNo_Config) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 860 | return false; |
| 861 | } |
| 862 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 863 | bool sameConfigs = (this->config() == dstConfig); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 864 | switch (dstConfig) { |
| 865 | case kA8_Config: |
| 866 | case kARGB_4444_Config: |
| 867 | case kRGB_565_Config: |
| 868 | case kARGB_8888_Config: |
| 869 | break; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 870 | case kA1_Config: |
| 871 | case kIndex8_Config: |
| 872 | if (!sameConfigs) { |
| 873 | return false; |
| 874 | } |
| 875 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 876 | default: |
| 877 | return false; |
| 878 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 879 | |
| 880 | // do not copy src if srcConfig == kA1_Config while dstConfig != kA1_Config |
| 881 | if (this->getConfig() == kA1_Config && !sameConfigs) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 882 | return false; |
| 883 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 884 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 885 | return true; |
| 886 | } |
| 887 | |
| 888 | bool SkBitmap::copyTo(SkBitmap* dst, Config dstConfig, Allocator* alloc) const { |
| 889 | if (!this->canCopyTo(dstConfig)) { |
| 890 | return false; |
| 891 | } |
| 892 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 893 | // if we have a texture, first get those pixels |
| 894 | SkBitmap tmpSrc; |
| 895 | const SkBitmap* src = this; |
| 896 | |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 897 | if (fPixelRef && fPixelRef->readPixels(&tmpSrc)) { |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 898 | SkASSERT(tmpSrc.width() == this->width()); |
| 899 | SkASSERT(tmpSrc.height() == this->height()); |
| 900 | |
| 901 | // did we get lucky and we can just return tmpSrc? |
| 902 | if (tmpSrc.config() == dstConfig && NULL == alloc) { |
| 903 | dst->swap(tmpSrc); |
| 904 | return true; |
| 905 | } |
| 906 | |
| 907 | // fall through to the raster case |
| 908 | src = &tmpSrc; |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 909 | } |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 910 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 911 | // we lock this now, since we may need its colortable |
| 912 | SkAutoLockPixels srclock(*src); |
| 913 | if (!src->readyToDraw()) { |
| 914 | return false; |
| 915 | } |
| 916 | |
| 917 | SkBitmap tmpDst; |
| 918 | tmpDst.setConfig(dstConfig, src->width(), src->height()); |
| 919 | |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 920 | // allocate colortable if srcConfig == kIndex8_Config |
| 921 | SkColorTable* ctable = (dstConfig == kIndex8_Config) ? |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 922 | new SkColorTable(*src->getColorTable()) : NULL; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 923 | SkAutoUnref au(ctable); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 924 | if (!tmpDst.allocPixels(alloc, ctable)) { |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 925 | return false; |
| 926 | } |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 927 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 928 | if (!tmpDst.readyToDraw()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 929 | // allocator/lock failed |
| 930 | return false; |
| 931 | } |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 932 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 933 | /* do memcpy for the same configs cases, else use drawing |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 934 | */ |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 935 | if (src->config() == dstConfig) { |
| 936 | if (tmpDst.getSize() == src->getSize()) { |
| 937 | memcpy(tmpDst.getPixels(), src->getPixels(), src->getSafeSize()); |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 938 | } else { |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 939 | const char* srcP = reinterpret_cast<const char*>(src->getPixels()); |
| 940 | char* dstP = reinterpret_cast<char*>(tmpDst.getPixels()); |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 941 | // 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] | 942 | size_t bytesToCopy = tmpDst.width() * tmpDst.bytesPerPixel(); |
| 943 | for (int y = 0; y < tmpDst.height(); y++) { |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 944 | memcpy(dstP, srcP, bytesToCopy); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 945 | srcP += src->rowBytes(); |
| 946 | dstP += tmpDst.rowBytes(); |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 947 | } |
| 948 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 949 | } else { |
| 950 | // if the src has alpha, we have to clear the dst first |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 951 | if (!src->isOpaque()) { |
| 952 | tmpDst.eraseColor(0); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 953 | } |
| 954 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 955 | SkCanvas canvas(tmpDst); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 956 | SkPaint paint; |
| 957 | |
| 958 | paint.setDither(true); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 959 | canvas.drawBitmap(*src, 0, 0, &paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 960 | } |
| 961 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 962 | tmpDst.setIsOpaque(src->isOpaque()); |
reed@android.com | cafc9f9 | 2009-08-22 03:44:57 +0000 | [diff] [blame] | 963 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 964 | dst->swap(tmpDst); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 965 | return true; |
| 966 | } |
| 967 | |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 968 | bool SkBitmap::deepCopyTo(SkBitmap* dst, Config dstConfig) const { |
| 969 | if (!this->canCopyTo(dstConfig)) { |
| 970 | return false; |
| 971 | } |
| 972 | |
| 973 | // If we have a PixelRef, and it supports deep copy, use it. |
| 974 | // Currently supported only by texture-backed bitmaps. |
| 975 | if (fPixelRef) { |
| 976 | SkPixelRef* pixelRef = fPixelRef->deepCopy(dstConfig); |
| 977 | if (pixelRef) { |
| 978 | dst->setConfig(dstConfig, fWidth, fHeight); |
| 979 | dst->setPixelRef(pixelRef)->unref(); |
| 980 | return true; |
| 981 | } |
| 982 | } |
| 983 | |
| 984 | if (this->getTexture()) { |
| 985 | return false; |
| 986 | } else { |
| 987 | return this->copyTo(dst, dstConfig, NULL); |
| 988 | } |
| 989 | } |
| 990 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 991 | /////////////////////////////////////////////////////////////////////////////// |
| 992 | /////////////////////////////////////////////////////////////////////////////// |
| 993 | |
| 994 | static void downsampleby2_proc32(SkBitmap* dst, int x, int y, |
| 995 | const SkBitmap& src) { |
| 996 | x <<= 1; |
| 997 | y <<= 1; |
| 998 | const SkPMColor* p = src.getAddr32(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 999 | const SkPMColor* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1000 | SkPMColor c, ag, rb; |
| 1001 | |
| 1002 | c = *p; ag = (c >> 8) & 0xFF00FF; rb = c & 0xFF00FF; |
| 1003 | if (x < src.width() - 1) { |
| 1004 | p += 1; |
| 1005 | } |
| 1006 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1007 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1008 | p = baseP; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1009 | if (y < src.height() - 1) { |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1010 | p += src.rowBytes() >> 2; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1011 | } |
| 1012 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1013 | if (x < src.width() - 1) { |
| 1014 | p += 1; |
| 1015 | } |
| 1016 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1017 | |
| 1018 | *dst->getAddr32(x >> 1, y >> 1) = |
| 1019 | ((rb >> 2) & 0xFF00FF) | ((ag << 6) & 0xFF00FF00); |
| 1020 | } |
| 1021 | |
| 1022 | static inline uint32_t expand16(U16CPU c) { |
| 1023 | return (c & ~SK_G16_MASK_IN_PLACE) | ((c & SK_G16_MASK_IN_PLACE) << 16); |
| 1024 | } |
| 1025 | |
| 1026 | // returns dirt in the top 16bits, but we don't care, since we only |
| 1027 | // store the low 16bits. |
| 1028 | static inline U16CPU pack16(uint32_t c) { |
| 1029 | return (c & ~SK_G16_MASK_IN_PLACE) | ((c >> 16) & SK_G16_MASK_IN_PLACE); |
| 1030 | } |
| 1031 | |
| 1032 | static void downsampleby2_proc16(SkBitmap* dst, int x, int y, |
| 1033 | const SkBitmap& src) { |
| 1034 | x <<= 1; |
| 1035 | y <<= 1; |
| 1036 | const uint16_t* p = src.getAddr16(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1037 | const uint16_t* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1038 | SkPMColor c; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1039 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1040 | c = expand16(*p); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1041 | if (x < src.width() - 1) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1042 | p += 1; |
| 1043 | } |
| 1044 | c += expand16(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1045 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1046 | p = baseP; |
| 1047 | if (y < src.height() - 1) { |
| 1048 | p += src.rowBytes() >> 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1049 | } |
| 1050 | c += expand16(*p); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1051 | if (x < src.width() - 1) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1052 | p += 1; |
| 1053 | } |
| 1054 | c += expand16(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1055 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1056 | *dst->getAddr16(x >> 1, y >> 1) = (uint16_t)pack16(c >> 2); |
| 1057 | } |
| 1058 | |
| 1059 | static uint32_t expand4444(U16CPU c) { |
| 1060 | return (c & 0xF0F) | ((c & ~0xF0F) << 12); |
| 1061 | } |
| 1062 | |
| 1063 | static U16CPU collaps4444(uint32_t c) { |
| 1064 | return (c & 0xF0F) | ((c >> 12) & ~0xF0F); |
| 1065 | } |
| 1066 | |
| 1067 | static void downsampleby2_proc4444(SkBitmap* dst, int x, int y, |
| 1068 | const SkBitmap& src) { |
| 1069 | x <<= 1; |
| 1070 | y <<= 1; |
| 1071 | const uint16_t* p = src.getAddr16(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1072 | const uint16_t* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1073 | uint32_t c; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1074 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1075 | c = expand4444(*p); |
| 1076 | if (x < src.width() - 1) { |
| 1077 | p += 1; |
| 1078 | } |
| 1079 | c += expand4444(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1080 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1081 | p = baseP; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1082 | if (y < src.height() - 1) { |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1083 | p += src.rowBytes() >> 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1084 | } |
| 1085 | c += expand4444(*p); |
| 1086 | if (x < src.width() - 1) { |
| 1087 | p += 1; |
| 1088 | } |
| 1089 | c += expand4444(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1090 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1091 | *dst->getAddr16(x >> 1, y >> 1) = (uint16_t)collaps4444(c >> 2); |
| 1092 | } |
| 1093 | |
| 1094 | void SkBitmap::buildMipMap(bool forceRebuild) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1095 | if (forceRebuild) |
| 1096 | this->freeMipMap(); |
| 1097 | else if (fMipMap) |
| 1098 | return; // we're already built |
| 1099 | |
| 1100 | SkASSERT(NULL == fMipMap); |
| 1101 | |
| 1102 | void (*proc)(SkBitmap* dst, int x, int y, const SkBitmap& src); |
| 1103 | |
| 1104 | const SkBitmap::Config config = this->getConfig(); |
| 1105 | |
| 1106 | switch (config) { |
| 1107 | case kARGB_8888_Config: |
| 1108 | proc = downsampleby2_proc32; |
| 1109 | break; |
| 1110 | case kRGB_565_Config: |
| 1111 | proc = downsampleby2_proc16; |
| 1112 | break; |
| 1113 | case kARGB_4444_Config: |
| 1114 | proc = downsampleby2_proc4444; |
| 1115 | break; |
| 1116 | case kIndex8_Config: |
| 1117 | case kA8_Config: |
| 1118 | default: |
| 1119 | return; // don't build mipmaps for these configs |
| 1120 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 1121 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1122 | SkAutoLockPixels alp(*this); |
| 1123 | if (!this->readyToDraw()) { |
| 1124 | return; |
| 1125 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1126 | |
| 1127 | // whip through our loop to compute the exact size needed |
| 1128 | size_t size = 0; |
| 1129 | int maxLevels = 0; |
| 1130 | { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1131 | int width = this->width(); |
| 1132 | int height = this->height(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1133 | for (;;) { |
| 1134 | width >>= 1; |
| 1135 | height >>= 1; |
| 1136 | if (0 == width || 0 == height) { |
| 1137 | break; |
| 1138 | } |
| 1139 | size += ComputeRowBytes(config, width) * height; |
| 1140 | maxLevels += 1; |
| 1141 | } |
| 1142 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 1143 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1144 | // nothing to build |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1145 | if (0 == maxLevels) { |
| 1146 | return; |
| 1147 | } |
| 1148 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1149 | SkBitmap srcBM(*this); |
| 1150 | srcBM.lockPixels(); |
| 1151 | if (!srcBM.readyToDraw()) { |
| 1152 | return; |
| 1153 | } |
| 1154 | |
| 1155 | MipMap* mm = MipMap::Alloc(maxLevels, size); |
| 1156 | if (NULL == mm) { |
| 1157 | return; |
| 1158 | } |
| 1159 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1160 | MipLevel* level = mm->levels(); |
| 1161 | uint8_t* addr = (uint8_t*)mm->pixels(); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1162 | int width = this->width(); |
| 1163 | int height = this->height(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1164 | unsigned rowBytes = this->rowBytes(); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1165 | SkBitmap dstBM; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1166 | |
| 1167 | for (int i = 0; i < maxLevels; i++) { |
| 1168 | width >>= 1; |
| 1169 | height >>= 1; |
| 1170 | rowBytes = ComputeRowBytes(config, width); |
| 1171 | |
| 1172 | level[i].fPixels = addr; |
reed@android.com | f459a49 | 2009-03-27 12:33:50 +0000 | [diff] [blame] | 1173 | level[i].fWidth = width; |
| 1174 | level[i].fHeight = height; |
reed@android.com | 49f0ff2 | 2009-03-19 21:52:42 +0000 | [diff] [blame] | 1175 | level[i].fRowBytes = rowBytes; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1176 | |
| 1177 | dstBM.setConfig(config, width, height, rowBytes); |
| 1178 | dstBM.setPixels(addr); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1179 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1180 | for (int y = 0; y < height; y++) { |
| 1181 | for (int x = 0; x < width; x++) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1182 | proc(&dstBM, x, y, srcBM); |
| 1183 | } |
| 1184 | } |
| 1185 | |
| 1186 | srcBM = dstBM; |
| 1187 | addr += height * rowBytes; |
| 1188 | } |
| 1189 | SkASSERT(addr == (uint8_t*)mm->pixels() + size); |
| 1190 | fMipMap = mm; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1191 | } |
| 1192 | |
| 1193 | bool SkBitmap::hasMipMap() const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1194 | return fMipMap != NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1195 | } |
| 1196 | |
| 1197 | int SkBitmap::extractMipLevel(SkBitmap* dst, SkFixed sx, SkFixed sy) { |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 1198 | if (NULL == fMipMap) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1199 | return 0; |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 1200 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1201 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1202 | int level = ComputeMipLevel(sx, sy) >> 16; |
| 1203 | SkASSERT(level >= 0); |
| 1204 | if (level <= 0) { |
| 1205 | return 0; |
| 1206 | } |
| 1207 | |
| 1208 | if (level >= fMipMap->fLevelCount) { |
| 1209 | level = fMipMap->fLevelCount - 1; |
| 1210 | } |
| 1211 | if (dst) { |
| 1212 | const MipLevel& mip = fMipMap->levels()[level - 1]; |
| 1213 | dst->setConfig((SkBitmap::Config)this->config(), |
| 1214 | mip.fWidth, mip.fHeight, mip.fRowBytes); |
| 1215 | dst->setPixels(mip.fPixels); |
| 1216 | } |
| 1217 | return level; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1218 | } |
| 1219 | |
| 1220 | SkFixed SkBitmap::ComputeMipLevel(SkFixed sx, SkFixed sy) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1221 | sx = SkAbs32(sx); |
| 1222 | sy = SkAbs32(sy); |
| 1223 | if (sx < sy) { |
| 1224 | sx = sy; |
| 1225 | } |
| 1226 | if (sx < SK_Fixed1) { |
| 1227 | return 0; |
| 1228 | } |
| 1229 | int clz = SkCLZ(sx); |
| 1230 | SkASSERT(clz >= 1 && clz <= 15); |
| 1231 | return SkIntToFixed(15 - clz) + ((unsigned)(sx << (clz + 1)) >> 16); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1232 | } |
| 1233 | |
| 1234 | /////////////////////////////////////////////////////////////////////////////// |
| 1235 | |
tomhudson@google.com | a87cd2a | 2011-06-15 16:50:27 +0000 | [diff] [blame] | 1236 | static bool GetBitmapAlpha(const SkBitmap& src, uint8_t* SK_RESTRICT alpha, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1237 | int alphaRowBytes) { |
| 1238 | SkASSERT(alpha != NULL); |
| 1239 | SkASSERT(alphaRowBytes >= src.width()); |
| 1240 | |
| 1241 | SkBitmap::Config config = src.getConfig(); |
| 1242 | int w = src.width(); |
| 1243 | int h = src.height(); |
| 1244 | int rb = src.rowBytes(); |
| 1245 | |
reed@android.com | 1cdcb51 | 2009-08-24 19:11:00 +0000 | [diff] [blame] | 1246 | SkAutoLockPixels alp(src); |
| 1247 | if (!src.readyToDraw()) { |
| 1248 | // zero out the alpha buffer and return |
| 1249 | while (--h >= 0) { |
| 1250 | memset(alpha, 0, w); |
| 1251 | alpha += alphaRowBytes; |
| 1252 | } |
| 1253 | return false; |
| 1254 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 1255 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1256 | if (SkBitmap::kA8_Config == config && !src.isOpaque()) { |
| 1257 | const uint8_t* s = src.getAddr8(0, 0); |
| 1258 | while (--h >= 0) { |
| 1259 | memcpy(alpha, s, w); |
| 1260 | s += rb; |
| 1261 | alpha += alphaRowBytes; |
| 1262 | } |
| 1263 | } else if (SkBitmap::kARGB_8888_Config == config && !src.isOpaque()) { |
| 1264 | const SkPMColor* SK_RESTRICT s = src.getAddr32(0, 0); |
| 1265 | while (--h >= 0) { |
| 1266 | for (int x = 0; x < w; x++) { |
| 1267 | alpha[x] = SkGetPackedA32(s[x]); |
| 1268 | } |
| 1269 | s = (const SkPMColor*)((const char*)s + rb); |
| 1270 | alpha += alphaRowBytes; |
| 1271 | } |
| 1272 | } else if (SkBitmap::kARGB_4444_Config == config && !src.isOpaque()) { |
| 1273 | const SkPMColor16* SK_RESTRICT s = src.getAddr16(0, 0); |
| 1274 | while (--h >= 0) { |
| 1275 | for (int x = 0; x < w; x++) { |
| 1276 | alpha[x] = SkPacked4444ToA32(s[x]); |
| 1277 | } |
| 1278 | s = (const SkPMColor16*)((const char*)s + rb); |
| 1279 | alpha += alphaRowBytes; |
| 1280 | } |
| 1281 | } else if (SkBitmap::kIndex8_Config == config && !src.isOpaque()) { |
| 1282 | SkColorTable* ct = src.getColorTable(); |
| 1283 | if (ct) { |
| 1284 | const SkPMColor* SK_RESTRICT table = ct->lockColors(); |
| 1285 | const uint8_t* SK_RESTRICT s = src.getAddr8(0, 0); |
| 1286 | while (--h >= 0) { |
| 1287 | for (int x = 0; x < w; x++) { |
| 1288 | alpha[x] = SkGetPackedA32(table[s[x]]); |
| 1289 | } |
| 1290 | s += rb; |
| 1291 | alpha += alphaRowBytes; |
| 1292 | } |
| 1293 | ct->unlockColors(false); |
| 1294 | } |
| 1295 | } else { // src is opaque, so just fill alpha[] with 0xFF |
| 1296 | memset(alpha, 0xFF, h * alphaRowBytes); |
| 1297 | } |
reed@android.com | 1cdcb51 | 2009-08-24 19:11:00 +0000 | [diff] [blame] | 1298 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1299 | } |
| 1300 | |
| 1301 | #include "SkPaint.h" |
| 1302 | #include "SkMaskFilter.h" |
| 1303 | #include "SkMatrix.h" |
| 1304 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1305 | bool SkBitmap::extractAlpha(SkBitmap* dst, const SkPaint* paint, |
djsollen@google.com | 57f4969 | 2011-02-23 20:46:31 +0000 | [diff] [blame] | 1306 | Allocator *allocator, SkIPoint* offset) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1307 | SkDEBUGCODE(this->validate();) |
| 1308 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1309 | SkBitmap tmpBitmap; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1310 | SkMatrix identity; |
| 1311 | SkMask srcM, dstM; |
| 1312 | |
| 1313 | srcM.fBounds.set(0, 0, this->width(), this->height()); |
| 1314 | srcM.fRowBytes = SkAlign4(this->width()); |
| 1315 | srcM.fFormat = SkMask::kA8_Format; |
| 1316 | |
| 1317 | SkMaskFilter* filter = paint ? paint->getMaskFilter() : NULL; |
| 1318 | |
| 1319 | // compute our (larger?) dst bounds if we have a filter |
| 1320 | if (NULL != filter) { |
| 1321 | identity.reset(); |
| 1322 | srcM.fImage = NULL; |
| 1323 | if (!filter->filterMask(&dstM, srcM, identity, NULL)) { |
| 1324 | goto NO_FILTER_CASE; |
| 1325 | } |
| 1326 | dstM.fRowBytes = SkAlign4(dstM.fBounds.width()); |
| 1327 | } else { |
| 1328 | NO_FILTER_CASE: |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1329 | tmpBitmap.setConfig(SkBitmap::kA8_Config, this->width(), this->height(), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1330 | srcM.fRowBytes); |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1331 | if (!tmpBitmap.allocPixels(allocator, NULL)) { |
| 1332 | // Allocation of pixels for alpha bitmap failed. |
| 1333 | SkDebugf("extractAlpha failed to allocate (%d,%d) alpha bitmap\n", |
| 1334 | tmpBitmap.width(), tmpBitmap.height()); |
| 1335 | return false; |
| 1336 | } |
| 1337 | GetBitmapAlpha(*this, tmpBitmap.getAddr8(0, 0), srcM.fRowBytes); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1338 | if (offset) { |
| 1339 | offset->set(0, 0); |
| 1340 | } |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1341 | tmpBitmap.swap(*dst); |
| 1342 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1343 | } |
bungeman@google.com | 02f5584 | 2011-10-04 21:25:00 +0000 | [diff] [blame] | 1344 | srcM.fImage = SkMask::AllocImage(srcM.computeImageSize()); |
| 1345 | SkAutoMaskFreeImage srcCleanup(srcM.fImage); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1346 | |
| 1347 | GetBitmapAlpha(*this, srcM.fImage, srcM.fRowBytes); |
| 1348 | if (!filter->filterMask(&dstM, srcM, identity, NULL)) { |
| 1349 | goto NO_FILTER_CASE; |
| 1350 | } |
bungeman@google.com | 02f5584 | 2011-10-04 21:25:00 +0000 | [diff] [blame] | 1351 | SkAutoMaskFreeImage dstCleanup(dstM.fImage); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1352 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1353 | tmpBitmap.setConfig(SkBitmap::kA8_Config, dstM.fBounds.width(), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1354 | dstM.fBounds.height(), dstM.fRowBytes); |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1355 | if (!tmpBitmap.allocPixels(allocator, NULL)) { |
| 1356 | // Allocation of pixels for alpha bitmap failed. |
| 1357 | SkDebugf("extractAlpha failed to allocate (%d,%d) alpha bitmap\n", |
| 1358 | tmpBitmap.width(), tmpBitmap.height()); |
| 1359 | return false; |
| 1360 | } |
| 1361 | memcpy(tmpBitmap.getPixels(), dstM.fImage, dstM.computeImageSize()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1362 | if (offset) { |
| 1363 | offset->set(dstM.fBounds.fLeft, dstM.fBounds.fTop); |
| 1364 | } |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1365 | SkDEBUGCODE(tmpBitmap.validate();) |
| 1366 | |
| 1367 | tmpBitmap.swap(*dst); |
| 1368 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1369 | } |
| 1370 | |
| 1371 | /////////////////////////////////////////////////////////////////////////////// |
| 1372 | |
| 1373 | enum { |
| 1374 | SERIALIZE_PIXELTYPE_NONE, |
| 1375 | SERIALIZE_PIXELTYPE_RAW_WITH_CTABLE, |
| 1376 | SERIALIZE_PIXELTYPE_RAW_NO_CTABLE, |
| 1377 | SERIALIZE_PIXELTYPE_REF_DATA, |
tomhudson@google.com | 1f90287 | 2012-06-01 13:15:47 +0000 | [diff] [blame] | 1378 | SERIALIZE_PIXELTYPE_REF_PTR |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1379 | }; |
| 1380 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1381 | /* |
| 1382 | It is tricky to know how much to flatten. If we don't have a pixelref (i.e. |
| 1383 | we just have pixels, then we can only flatten the pixels, or write out an |
| 1384 | empty bitmap. |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1385 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1386 | With a pixelref, we still have the question of recognizing when two sitings |
| 1387 | of the same pixelref are the same, and when they are different. Perhaps we |
| 1388 | should look at the generationID and keep a record of that in some dictionary |
| 1389 | associated with the buffer. SkGLTextureCache does this sort of thing to know |
| 1390 | when to create a new texture. |
| 1391 | */ |
| 1392 | void SkBitmap::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 1393 | buffer.write32(fWidth); |
| 1394 | buffer.write32(fHeight); |
| 1395 | buffer.write32(fRowBytes); |
| 1396 | buffer.write8(fConfig); |
| 1397 | buffer.writeBool(this->isOpaque()); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1398 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1399 | /* If we are called in this mode, then it is up to the caller to manage |
| 1400 | the owner-counts on the pixelref, as we just record the ptr itself. |
| 1401 | */ |
| 1402 | if (!buffer.persistBitmapPixels()) { |
| 1403 | if (fPixelRef) { |
| 1404 | buffer.write8(SERIALIZE_PIXELTYPE_REF_PTR); |
| 1405 | buffer.write32(fPixelRefOffset); |
| 1406 | buffer.writeRefCnt(fPixelRef); |
| 1407 | return; |
| 1408 | } else { |
| 1409 | // we ignore the non-persist request, since we don't have a ref |
| 1410 | // ... or we could just write an empty bitmap... |
| 1411 | // (true) will write an empty bitmap, (false) will flatten the pix |
| 1412 | if (true) { |
| 1413 | buffer.write8(SERIALIZE_PIXELTYPE_NONE); |
| 1414 | return; |
| 1415 | } |
| 1416 | } |
| 1417 | } |
| 1418 | |
| 1419 | if (fPixelRef) { |
djsollen@google.com | 5370cd9 | 2012-03-28 20:47:01 +0000 | [diff] [blame] | 1420 | if (fPixelRef->getFactory()) { |
| 1421 | buffer.write8(SERIALIZE_PIXELTYPE_REF_DATA); |
| 1422 | buffer.write32(fPixelRefOffset); |
| 1423 | buffer.writeFlattenable(fPixelRef); |
| 1424 | return; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1425 | } |
| 1426 | // if we get here, we can't record the pixels |
| 1427 | buffer.write8(SERIALIZE_PIXELTYPE_NONE); |
| 1428 | } else if (fPixels) { |
| 1429 | if (fColorTable) { |
| 1430 | buffer.write8(SERIALIZE_PIXELTYPE_RAW_WITH_CTABLE); |
djsollen@google.com | 64a0ec3 | 2012-06-12 15:17:27 +0000 | [diff] [blame] | 1431 | buffer.writeFlattenable(fColorTable); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1432 | } else { |
| 1433 | buffer.write8(SERIALIZE_PIXELTYPE_RAW_NO_CTABLE); |
| 1434 | } |
wjmaclean@chromium.org | 3f0260d | 2011-02-22 22:32:14 +0000 | [diff] [blame] | 1435 | buffer.writePad(fPixels, this->getSafeSize()); |
| 1436 | // There is no writeZeroPad() fcn, so write individual bytes. |
| 1437 | if (this->getSize() > this->getSafeSize()) { |
| 1438 | size_t deltaSize = this->getSize() - this->getSafeSize(); |
| 1439 | // Need aligned pointer to write into due to internal implementa- |
| 1440 | // tion of SkWriter32. |
| 1441 | memset(buffer.reserve(SkAlign4(deltaSize)), 0, deltaSize); |
| 1442 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1443 | } else { |
| 1444 | buffer.write8(SERIALIZE_PIXELTYPE_NONE); |
| 1445 | } |
| 1446 | } |
| 1447 | |
| 1448 | void SkBitmap::unflatten(SkFlattenableReadBuffer& buffer) { |
| 1449 | this->reset(); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1450 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1451 | int width = buffer.readInt(); |
| 1452 | int height = buffer.readInt(); |
| 1453 | int rowBytes = buffer.readInt(); |
| 1454 | int config = buffer.readU8(); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1455 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1456 | this->setConfig((Config)config, width, height, rowBytes); |
| 1457 | this->setIsOpaque(buffer.readBool()); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1458 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1459 | int reftype = buffer.readU8(); |
| 1460 | switch (reftype) { |
| 1461 | case SERIALIZE_PIXELTYPE_REF_PTR: { |
| 1462 | size_t offset = buffer.readU32(); |
| 1463 | SkPixelRef* pr = (SkPixelRef*)buffer.readRefCnt(); |
| 1464 | this->setPixelRef(pr, offset); |
| 1465 | break; |
| 1466 | } |
| 1467 | case SERIALIZE_PIXELTYPE_REF_DATA: { |
| 1468 | size_t offset = buffer.readU32(); |
djsollen@google.com | 5370cd9 | 2012-03-28 20:47:01 +0000 | [diff] [blame] | 1469 | SkPixelRef* pr = static_cast<SkPixelRef*>(buffer.readFlattenable()); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 1470 | SkSafeUnref(this->setPixelRef(pr, offset)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1471 | break; |
| 1472 | } |
| 1473 | case SERIALIZE_PIXELTYPE_RAW_WITH_CTABLE: |
| 1474 | case SERIALIZE_PIXELTYPE_RAW_NO_CTABLE: { |
| 1475 | SkColorTable* ctable = NULL; |
| 1476 | if (SERIALIZE_PIXELTYPE_RAW_WITH_CTABLE == reftype) { |
djsollen@google.com | 64a0ec3 | 2012-06-12 15:17:27 +0000 | [diff] [blame] | 1477 | ctable = static_cast<SkColorTable*>(buffer.readFlattenable()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1478 | } |
wjmaclean@chromium.org | 3f0260d | 2011-02-22 22:32:14 +0000 | [diff] [blame] | 1479 | size_t size = this->getSize(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1480 | if (this->allocPixels(ctable)) { |
| 1481 | this->lockPixels(); |
wjmaclean@chromium.org | 3f0260d | 2011-02-22 22:32:14 +0000 | [diff] [blame] | 1482 | // Just read what we need. |
| 1483 | buffer.read(this->getPixels(), this->getSafeSize()); |
| 1484 | // Keep aligned for subsequent reads. |
| 1485 | buffer.skip(size - this->getSafeSize()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1486 | this->unlockPixels(); |
| 1487 | } else { |
wjmaclean@chromium.org | 0bde180 | 2010-12-22 17:43:54 +0000 | [diff] [blame] | 1488 | buffer.skip(size); // Still skip the full-sized buffer though. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1489 | } |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1490 | SkSafeUnref(ctable); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1491 | break; |
| 1492 | } |
| 1493 | case SERIALIZE_PIXELTYPE_NONE: |
| 1494 | break; |
| 1495 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 1496 | SkDEBUGFAIL("unrecognized pixeltype in serialized data"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1497 | sk_throw(); |
| 1498 | } |
| 1499 | } |
| 1500 | |
| 1501 | /////////////////////////////////////////////////////////////////////////////// |
| 1502 | |
| 1503 | SkBitmap::RLEPixels::RLEPixels(int width, int height) { |
| 1504 | fHeight = height; |
| 1505 | fYPtrs = (uint8_t**)sk_malloc_throw(height * sizeof(uint8_t*)); |
reed@android.com | 4516f47 | 2009-06-29 16:25:36 +0000 | [diff] [blame] | 1506 | sk_bzero(fYPtrs, height * sizeof(uint8_t*)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1507 | } |
| 1508 | |
| 1509 | SkBitmap::RLEPixels::~RLEPixels() { |
| 1510 | sk_free(fYPtrs); |
| 1511 | } |
| 1512 | |
| 1513 | /////////////////////////////////////////////////////////////////////////////// |
| 1514 | |
| 1515 | #ifdef SK_DEBUG |
| 1516 | void SkBitmap::validate() const { |
| 1517 | SkASSERT(fConfig < kConfigCount); |
| 1518 | SkASSERT(fRowBytes >= (unsigned)ComputeRowBytes((Config)fConfig, fWidth)); |
junov@google.com | 4ee7ae5 | 2011-06-30 17:30:49 +0000 | [diff] [blame] | 1519 | SkASSERT(fFlags <= (kImageIsOpaque_Flag | kImageIsVolatile_Flag)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1520 | SkASSERT(fPixelLockCount >= 0); |
| 1521 | SkASSERT(NULL == fColorTable || (unsigned)fColorTable->getRefCnt() < 10000); |
| 1522 | SkASSERT((uint8_t)ComputeBytesPerPixel((Config)fConfig) == fBytesPerPixel); |
| 1523 | |
| 1524 | #if 0 // these asserts are not thread-correct, so disable for now |
| 1525 | if (fPixelRef) { |
| 1526 | if (fPixelLockCount > 0) { |
reed@google.com | ff0da4f | 2012-05-17 13:14:52 +0000 | [diff] [blame] | 1527 | SkASSERT(fPixelRef->isLocked()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1528 | } else { |
| 1529 | SkASSERT(NULL == fPixels); |
| 1530 | SkASSERT(NULL == fColorTable); |
| 1531 | } |
| 1532 | } |
| 1533 | #endif |
| 1534 | } |
| 1535 | #endif |