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 | |
robertphillips@google.com | 15e9d3e | 2012-06-21 20:25:03 +0000 | [diff] [blame] | 23 | SK_DEFINE_INST_COUNT(SkBitmap::Allocator) |
| 24 | |
djsollen@google.com | 56f8f33 | 2012-07-26 14:48:52 +0000 | [diff] [blame] | 25 | extern int32_t SkNextPixelRefGenerationID(); |
| 26 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +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 | } |
| 47 | Sk64 size; |
| 48 | size.setMul(levelCount + 1, sizeof(MipLevel)); |
| 49 | size.add(sizeof(MipMap)); |
| 50 | size.add(pixelSize); |
| 51 | if (!isPos32Bits(size)) { |
| 52 | return NULL; |
| 53 | } |
| 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); |
djsollen@google.com | 56f8f33 | 2012-07-26 14:48:52 +0000 | [diff] [blame] | 142 | SkTSwap(fRawPixelGenerationID, other.fRawPixelGenerationID); |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 143 | SkTSwap(fRowBytes, other.fRowBytes); |
| 144 | SkTSwap(fWidth, other.fWidth); |
| 145 | SkTSwap(fHeight, other.fHeight); |
| 146 | SkTSwap(fConfig, other.fConfig); |
| 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: |
| 162 | case kA1_Config: |
| 163 | bpp = 0; // not applicable |
| 164 | break; |
| 165 | case kRLE_Index8_Config: |
| 166 | case kA8_Config: |
| 167 | case kIndex8_Config: |
| 168 | bpp = 1; |
| 169 | break; |
| 170 | case kRGB_565_Config: |
| 171 | case kARGB_4444_Config: |
| 172 | bpp = 2; |
| 173 | break; |
| 174 | case kARGB_8888_Config: |
| 175 | bpp = 4; |
| 176 | break; |
| 177 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 178 | SkDEBUGFAIL("unknown config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 179 | bpp = 0; // error |
| 180 | break; |
| 181 | } |
| 182 | return bpp; |
| 183 | } |
| 184 | |
| 185 | int SkBitmap::ComputeRowBytes(Config c, int width) { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 186 | if (width < 0) { |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | Sk64 rowBytes; |
| 191 | rowBytes.setZero(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 192 | |
| 193 | switch (c) { |
| 194 | case kNo_Config: |
| 195 | case kRLE_Index8_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 196 | break; |
| 197 | case kA1_Config: |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 198 | rowBytes.set(width); |
| 199 | rowBytes.add(7); |
| 200 | rowBytes.shiftRight(3); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 201 | break; |
| 202 | case kA8_Config: |
| 203 | case kIndex8_Config: |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 204 | rowBytes.set(width); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 205 | break; |
| 206 | case kRGB_565_Config: |
| 207 | case kARGB_4444_Config: |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 208 | rowBytes.set(width); |
| 209 | rowBytes.shiftLeft(1); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 210 | break; |
| 211 | case kARGB_8888_Config: |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 212 | rowBytes.set(width); |
| 213 | rowBytes.shiftLeft(2); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 214 | break; |
| 215 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 216 | SkDEBUGFAIL("unknown config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 217 | break; |
| 218 | } |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 219 | return isPos32Bits(rowBytes) ? rowBytes.get32() : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 220 | } |
| 221 | |
| 222 | Sk64 SkBitmap::ComputeSize64(Config c, int width, int height) { |
| 223 | Sk64 size; |
| 224 | size.setMul(SkBitmap::ComputeRowBytes(c, width), height); |
| 225 | return size; |
| 226 | } |
| 227 | |
| 228 | size_t SkBitmap::ComputeSize(Config c, int width, int height) { |
| 229 | Sk64 size = SkBitmap::ComputeSize64(c, width, height); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 230 | return isPos32Bits(size) ? size.get32() : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 231 | } |
| 232 | |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 233 | Sk64 SkBitmap::ComputeSafeSize64(Config config, |
| 234 | uint32_t width, |
| 235 | uint32_t height, |
| 236 | uint32_t rowBytes) { |
| 237 | Sk64 safeSize; |
| 238 | safeSize.setZero(); |
| 239 | if (height > 0) { |
| 240 | safeSize.set(ComputeRowBytes(config, width)); |
| 241 | Sk64 sizeAllButLastRow; |
| 242 | sizeAllButLastRow.setMul(height - 1, rowBytes); |
| 243 | safeSize.add(sizeAllButLastRow); |
| 244 | } |
| 245 | SkASSERT(!safeSize.isNeg()); |
| 246 | return safeSize; |
| 247 | } |
| 248 | |
| 249 | size_t SkBitmap::ComputeSafeSize(Config config, |
| 250 | uint32_t width, |
| 251 | uint32_t height, |
| 252 | uint32_t rowBytes) { |
| 253 | Sk64 safeSize = ComputeSafeSize64(config, width, height, rowBytes); |
| 254 | return (safeSize.is32() ? safeSize.get32() : 0); |
| 255 | } |
| 256 | |
reed@google.com | 86b2e43 | 2012-03-15 21:17:03 +0000 | [diff] [blame] | 257 | void SkBitmap::getBounds(SkRect* bounds) const { |
| 258 | SkASSERT(bounds); |
| 259 | bounds->set(0, 0, |
| 260 | SkIntToScalar(fWidth), SkIntToScalar(fHeight)); |
| 261 | } |
| 262 | |
reed@google.com | 80e1459 | 2012-03-16 14:58:07 +0000 | [diff] [blame] | 263 | void SkBitmap::getBounds(SkIRect* bounds) const { |
| 264 | SkASSERT(bounds); |
| 265 | bounds->set(0, 0, fWidth, fHeight); |
| 266 | } |
| 267 | |
reed@google.com | 86b2e43 | 2012-03-15 21:17:03 +0000 | [diff] [blame] | 268 | /////////////////////////////////////////////////////////////////////////////// |
| 269 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 270 | void SkBitmap::setConfig(Config c, int width, int height, int rowBytes) { |
| 271 | this->freePixels(); |
| 272 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 273 | if ((width | height | rowBytes) < 0) { |
agl@chromium.org | 6b8cb25 | 2009-06-01 23:52:37 +0000 | [diff] [blame] | 274 | goto err; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 275 | } |
| 276 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 277 | if (rowBytes == 0) { |
| 278 | rowBytes = SkBitmap::ComputeRowBytes(c, width); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 279 | if (0 == rowBytes && kNo_Config != c) { |
agl@chromium.org | 6b8cb25 | 2009-06-01 23:52:37 +0000 | [diff] [blame] | 280 | goto err; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 281 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 282 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 283 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 284 | fConfig = SkToU8(c); |
reed@android.com | f459a49 | 2009-03-27 12:33:50 +0000 | [diff] [blame] | 285 | fWidth = width; |
| 286 | fHeight = height; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 287 | fRowBytes = rowBytes; |
| 288 | |
| 289 | fBytesPerPixel = (uint8_t)ComputeBytesPerPixel(c); |
| 290 | |
| 291 | SkDEBUGCODE(this->validate();) |
reed@android.com | 9e0c2fc | 2009-06-02 18:54:28 +0000 | [diff] [blame] | 292 | return; |
agl@chromium.org | 6b8cb25 | 2009-06-01 23:52:37 +0000 | [diff] [blame] | 293 | |
reed@android.com | 9e0c2fc | 2009-06-02 18:54:28 +0000 | [diff] [blame] | 294 | // 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] | 295 | err: |
| 296 | this->reset(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | void SkBitmap::updatePixelsFromRef() const { |
| 300 | if (NULL != fPixelRef) { |
| 301 | if (fPixelLockCount > 0) { |
reed@google.com | ff0da4f | 2012-05-17 13:14:52 +0000 | [diff] [blame] | 302 | SkASSERT(fPixelRef->isLocked()); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 303 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 304 | void* p = fPixelRef->pixels(); |
| 305 | if (NULL != p) { |
| 306 | p = (char*)p + fPixelRefOffset; |
| 307 | } |
| 308 | fPixels = p; |
| 309 | SkRefCnt_SafeAssign(fColorTable, fPixelRef->colorTable()); |
| 310 | } else { |
| 311 | SkASSERT(0 == fPixelLockCount); |
| 312 | fPixels = NULL; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 313 | if (fColorTable) { |
| 314 | fColorTable->unref(); |
| 315 | fColorTable = NULL; |
| 316 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 317 | } |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | SkPixelRef* SkBitmap::setPixelRef(SkPixelRef* pr, size_t offset) { |
| 322 | // do this first, we that we never have a non-zero offset with a null ref |
| 323 | if (NULL == pr) { |
| 324 | offset = 0; |
| 325 | } |
| 326 | |
| 327 | if (fPixelRef != pr || fPixelRefOffset != offset) { |
| 328 | if (fPixelRef != pr) { |
| 329 | this->freePixels(); |
| 330 | SkASSERT(NULL == fPixelRef); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 331 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 332 | SkSafeRef(pr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 333 | fPixelRef = pr; |
| 334 | } |
| 335 | fPixelRefOffset = offset; |
| 336 | this->updatePixelsFromRef(); |
| 337 | } |
| 338 | |
| 339 | SkDEBUGCODE(this->validate();) |
| 340 | return pr; |
| 341 | } |
| 342 | |
| 343 | void SkBitmap::lockPixels() const { |
| 344 | if (NULL != fPixelRef && 1 == ++fPixelLockCount) { |
| 345 | fPixelRef->lockPixels(); |
| 346 | this->updatePixelsFromRef(); |
| 347 | } |
| 348 | SkDEBUGCODE(this->validate();) |
| 349 | } |
| 350 | |
| 351 | void SkBitmap::unlockPixels() const { |
| 352 | SkASSERT(NULL == fPixelRef || fPixelLockCount > 0); |
| 353 | |
| 354 | if (NULL != fPixelRef && 0 == --fPixelLockCount) { |
| 355 | fPixelRef->unlockPixels(); |
| 356 | this->updatePixelsFromRef(); |
| 357 | } |
| 358 | SkDEBUGCODE(this->validate();) |
| 359 | } |
| 360 | |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 361 | bool SkBitmap::lockPixelsAreWritable() const { |
djsollen@google.com | 56f8f33 | 2012-07-26 14:48:52 +0000 | [diff] [blame] | 362 | if (fPixelRef) { |
| 363 | return fPixelRef->lockPixelsAreWritable(); |
| 364 | } else { |
| 365 | return fPixels != NULL; |
| 366 | } |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 367 | } |
| 368 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 369 | void SkBitmap::setPixels(void* p, SkColorTable* ctable) { |
djsollen@google.com | 56f8f33 | 2012-07-26 14:48:52 +0000 | [diff] [blame] | 370 | this->freePixels(); |
| 371 | fPixels = p; |
| 372 | SkRefCnt_SafeAssign(fColorTable, ctable); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 373 | |
| 374 | SkDEBUGCODE(this->validate();) |
| 375 | } |
| 376 | |
| 377 | bool SkBitmap::allocPixels(Allocator* allocator, SkColorTable* ctable) { |
| 378 | HeapAllocator stdalloc; |
| 379 | |
| 380 | if (NULL == allocator) { |
| 381 | allocator = &stdalloc; |
| 382 | } |
| 383 | return allocator->allocPixelRef(this, ctable); |
| 384 | } |
| 385 | |
| 386 | void SkBitmap::freePixels() { |
| 387 | // if we're gonna free the pixels, we certainly need to free the mipmap |
| 388 | this->freeMipMap(); |
| 389 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 390 | if (fColorTable) { |
| 391 | fColorTable->unref(); |
| 392 | fColorTable = NULL; |
| 393 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 394 | |
| 395 | if (NULL != fPixelRef) { |
| 396 | if (fPixelLockCount > 0) { |
| 397 | fPixelRef->unlockPixels(); |
| 398 | } |
| 399 | fPixelRef->unref(); |
| 400 | fPixelRef = NULL; |
| 401 | fPixelRefOffset = 0; |
| 402 | } |
| 403 | fPixelLockCount = 0; |
| 404 | fPixels = NULL; |
| 405 | } |
| 406 | |
| 407 | void SkBitmap::freeMipMap() { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 408 | if (fMipMap) { |
| 409 | fMipMap->unref(); |
| 410 | fMipMap = NULL; |
| 411 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 412 | } |
| 413 | |
| 414 | uint32_t SkBitmap::getGenerationID() const { |
djsollen@google.com | 56f8f33 | 2012-07-26 14:48:52 +0000 | [diff] [blame] | 415 | if (fPixelRef) { |
| 416 | return fPixelRef->getGenerationID(); |
| 417 | } else { |
| 418 | SkASSERT(fPixels || !fRawPixelGenerationID); |
| 419 | if (fPixels && !fRawPixelGenerationID) { |
| 420 | fRawPixelGenerationID = SkNextPixelRefGenerationID(); |
| 421 | } |
| 422 | return fRawPixelGenerationID; |
| 423 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 424 | } |
| 425 | |
| 426 | void SkBitmap::notifyPixelsChanged() const { |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 427 | SkASSERT(!this->isImmutable()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 428 | if (fPixelRef) { |
| 429 | fPixelRef->notifyPixelsChanged(); |
djsollen@google.com | 56f8f33 | 2012-07-26 14:48:52 +0000 | [diff] [blame] | 430 | } else { |
| 431 | fRawPixelGenerationID = 0; // will grab next ID in getGenerationID |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 432 | } |
| 433 | } |
| 434 | |
reed@android.com | ce4e53a | 2010-09-09 16:01:26 +0000 | [diff] [blame] | 435 | SkGpuTexture* SkBitmap::getTexture() const { |
| 436 | return fPixelRef ? fPixelRef->getTexture() : NULL; |
| 437 | } |
| 438 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 439 | /////////////////////////////////////////////////////////////////////////////// |
| 440 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 441 | /** We explicitly use the same allocator for our pixels that SkMask does, |
| 442 | so that we can freely assign memory allocated by one class to the other. |
| 443 | */ |
| 444 | bool SkBitmap::HeapAllocator::allocPixelRef(SkBitmap* dst, |
| 445 | SkColorTable* ctable) { |
| 446 | Sk64 size = dst->getSize64(); |
| 447 | if (size.isNeg() || !size.is32()) { |
| 448 | return false; |
| 449 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 450 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 451 | void* addr = sk_malloc_flags(size.get32(), 0); // returns NULL on failure |
| 452 | if (NULL == addr) { |
| 453 | return false; |
| 454 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 455 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 456 | dst->setPixelRef(new SkMallocPixelRef(addr, size.get32(), ctable))->unref(); |
| 457 | // since we're already allocated, we lockPixels right away |
| 458 | dst->lockPixels(); |
| 459 | return true; |
| 460 | } |
| 461 | |
| 462 | /////////////////////////////////////////////////////////////////////////////// |
| 463 | |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 464 | size_t SkBitmap::getSafeSize() const { |
| 465 | // This is intended to be a size_t version of ComputeSafeSize64(), just |
| 466 | // faster. The computation is meant to be identical. |
| 467 | return (fHeight ? ((fHeight - 1) * fRowBytes) + |
| 468 | ComputeRowBytes(getConfig(), fWidth): 0); |
| 469 | } |
| 470 | |
| 471 | Sk64 SkBitmap::getSafeSize64() const { |
| 472 | return ComputeSafeSize64(getConfig(), fWidth, fHeight, fRowBytes); |
| 473 | } |
| 474 | |
bsalomon@google.com | c698097 | 2011-11-02 19:57:21 +0000 | [diff] [blame] | 475 | bool SkBitmap::copyPixelsTo(void* const dst, size_t dstSize, |
| 476 | int dstRowBytes, bool preserveDstPad) const { |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 477 | |
| 478 | if (dstRowBytes == -1) |
| 479 | dstRowBytes = fRowBytes; |
| 480 | SkASSERT(dstRowBytes >= 0); |
| 481 | |
| 482 | if (getConfig() == kRLE_Index8_Config || |
| 483 | dstRowBytes < ComputeRowBytes(getConfig(), fWidth) || |
| 484 | dst == NULL || (getPixels() == NULL && pixelRef() == NULL)) |
| 485 | return false; |
| 486 | |
bsalomon@google.com | c698097 | 2011-11-02 19:57:21 +0000 | [diff] [blame] | 487 | if (!preserveDstPad && static_cast<uint32_t>(dstRowBytes) == fRowBytes) { |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 488 | size_t safeSize = getSafeSize(); |
| 489 | if (safeSize > dstSize || safeSize == 0) |
| 490 | return false; |
| 491 | else { |
| 492 | SkAutoLockPixels lock(*this); |
| 493 | // This implementation will write bytes beyond the end of each row, |
| 494 | // excluding the last row, if the bitmap's stride is greater than |
| 495 | // strictly required by the current config. |
| 496 | memcpy(dst, getPixels(), safeSize); |
| 497 | |
| 498 | return true; |
| 499 | } |
| 500 | } else { |
| 501 | // If destination has different stride than us, then copy line by line. |
| 502 | if (ComputeSafeSize(getConfig(), fWidth, fHeight, dstRowBytes) > |
| 503 | dstSize) |
| 504 | return false; |
| 505 | else { |
| 506 | // Just copy what we need on each line. |
| 507 | uint32_t rowBytes = ComputeRowBytes(getConfig(), fWidth); |
| 508 | SkAutoLockPixels lock(*this); |
| 509 | const uint8_t* srcP = reinterpret_cast<const uint8_t*>(getPixels()); |
| 510 | uint8_t* dstP = reinterpret_cast<uint8_t*>(dst); |
| 511 | for (uint32_t row = 0; row < fHeight; |
| 512 | row++, srcP += fRowBytes, dstP += dstRowBytes) { |
| 513 | memcpy(dstP, srcP, rowBytes); |
| 514 | } |
| 515 | |
| 516 | return true; |
| 517 | } |
| 518 | } |
| 519 | } |
| 520 | |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 521 | /////////////////////////////////////////////////////////////////////////////// |
| 522 | |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 523 | bool SkBitmap::isImmutable() const { |
| 524 | return fPixelRef ? fPixelRef->isImmutable() : |
| 525 | fFlags & kImageIsImmutable_Flag; |
| 526 | } |
| 527 | |
| 528 | void SkBitmap::setImmutable() { |
| 529 | if (fPixelRef) { |
| 530 | fPixelRef->setImmutable(); |
| 531 | } else { |
| 532 | fFlags |= kImageIsImmutable_Flag; |
| 533 | } |
| 534 | } |
| 535 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 536 | bool SkBitmap::isOpaque() const { |
| 537 | switch (fConfig) { |
| 538 | case kNo_Config: |
| 539 | return true; |
| 540 | |
| 541 | case kA1_Config: |
| 542 | case kA8_Config: |
| 543 | case kARGB_4444_Config: |
| 544 | case kARGB_8888_Config: |
| 545 | return (fFlags & kImageIsOpaque_Flag) != 0; |
| 546 | |
| 547 | case kIndex8_Config: |
| 548 | case kRLE_Index8_Config: { |
| 549 | uint32_t flags = 0; |
| 550 | |
| 551 | this->lockPixels(); |
| 552 | // if lockPixels failed, we may not have a ctable ptr |
| 553 | if (fColorTable) { |
| 554 | flags = fColorTable->getFlags(); |
| 555 | } |
| 556 | this->unlockPixels(); |
| 557 | |
| 558 | return (flags & SkColorTable::kColorsAreOpaque_Flag) != 0; |
| 559 | } |
| 560 | |
| 561 | case kRGB_565_Config: |
| 562 | return true; |
| 563 | |
| 564 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 565 | SkDEBUGFAIL("unknown bitmap config pased to isOpaque"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 566 | return false; |
| 567 | } |
| 568 | } |
| 569 | |
| 570 | void SkBitmap::setIsOpaque(bool isOpaque) { |
| 571 | /* we record this regardless of fConfig, though it is ignored in |
| 572 | isOpaque() for configs that can't support per-pixel alpha. |
| 573 | */ |
| 574 | if (isOpaque) { |
| 575 | fFlags |= kImageIsOpaque_Flag; |
| 576 | } else { |
| 577 | fFlags &= ~kImageIsOpaque_Flag; |
| 578 | } |
| 579 | } |
| 580 | |
junov@google.com | 4ee7ae5 | 2011-06-30 17:30:49 +0000 | [diff] [blame] | 581 | bool SkBitmap::isVolatile() const { |
| 582 | return (fFlags & kImageIsVolatile_Flag) != 0; |
| 583 | } |
| 584 | |
| 585 | void SkBitmap::setIsVolatile(bool isVolatile) { |
| 586 | if (isVolatile) { |
| 587 | fFlags |= kImageIsVolatile_Flag; |
| 588 | } else { |
| 589 | fFlags &= ~kImageIsVolatile_Flag; |
| 590 | } |
| 591 | } |
| 592 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 593 | void* SkBitmap::getAddr(int x, int y) const { |
| 594 | SkASSERT((unsigned)x < (unsigned)this->width()); |
| 595 | SkASSERT((unsigned)y < (unsigned)this->height()); |
| 596 | |
| 597 | char* base = (char*)this->getPixels(); |
| 598 | if (base) { |
| 599 | base += y * this->rowBytes(); |
| 600 | switch (this->config()) { |
| 601 | case SkBitmap::kARGB_8888_Config: |
| 602 | base += x << 2; |
| 603 | break; |
| 604 | case SkBitmap::kARGB_4444_Config: |
| 605 | case SkBitmap::kRGB_565_Config: |
| 606 | base += x << 1; |
| 607 | break; |
| 608 | case SkBitmap::kA8_Config: |
| 609 | case SkBitmap::kIndex8_Config: |
| 610 | base += x; |
| 611 | break; |
| 612 | case SkBitmap::kA1_Config: |
| 613 | base += x >> 3; |
| 614 | break; |
| 615 | case kRLE_Index8_Config: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 616 | SkDEBUGFAIL("Can't return addr for kRLE_Index8_Config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 617 | base = NULL; |
| 618 | break; |
| 619 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 620 | SkDEBUGFAIL("Can't return addr for config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 621 | base = NULL; |
| 622 | break; |
| 623 | } |
| 624 | } |
| 625 | return base; |
| 626 | } |
| 627 | |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 628 | SkColor SkBitmap::getColor(int x, int y) const { |
| 629 | SkASSERT((unsigned)x < (unsigned)this->width()); |
| 630 | SkASSERT((unsigned)y < (unsigned)this->height()); |
| 631 | |
| 632 | switch (this->config()) { |
| 633 | case SkBitmap::kA1_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 634 | uint8_t* addr = this->getAddr1(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 635 | uint8_t mask = 1 << (7 - (x % 8)); |
| 636 | if (addr[0] & mask) { |
| 637 | return SK_ColorBLACK; |
| 638 | } else { |
| 639 | return 0; |
| 640 | } |
| 641 | } |
| 642 | case SkBitmap::kA8_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 643 | uint8_t* addr = this->getAddr8(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 644 | return SkColorSetA(0, addr[0]); |
| 645 | } |
| 646 | case SkBitmap::kIndex8_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 647 | SkPMColor c = this->getIndex8Color(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 648 | return SkUnPreMultiply::PMColorToColor(c); |
| 649 | } |
| 650 | case SkBitmap::kRGB_565_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 651 | uint16_t* addr = this->getAddr16(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 652 | return SkPixel16ToColor(addr[0]); |
| 653 | } |
| 654 | case SkBitmap::kARGB_4444_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 655 | uint16_t* addr = this->getAddr16(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 656 | SkPMColor c = SkPixel4444ToPixel32(addr[0]); |
| 657 | return SkUnPreMultiply::PMColorToColor(c); |
| 658 | } |
| 659 | case SkBitmap::kARGB_8888_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 660 | uint32_t* addr = this->getAddr32(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 661 | return SkUnPreMultiply::PMColorToColor(addr[0]); |
| 662 | } |
| 663 | case kRLE_Index8_Config: { |
| 664 | uint8_t dst; |
| 665 | const SkBitmap::RLEPixels* rle = |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 666 | (const SkBitmap::RLEPixels*)this->getPixels(); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 667 | SkPackBits::Unpack8(&dst, x, 1, rle->packedAtY(y)); |
| 668 | return SkUnPreMultiply::PMColorToColor((*fColorTable)[dst]); |
| 669 | } |
| 670 | case kNo_Config: |
| 671 | case kConfigCount: |
| 672 | SkASSERT(false); |
| 673 | return 0; |
| 674 | } |
| 675 | SkASSERT(false); // Not reached. |
| 676 | return 0; |
| 677 | } |
| 678 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 679 | /////////////////////////////////////////////////////////////////////////////// |
| 680 | /////////////////////////////////////////////////////////////////////////////// |
| 681 | |
| 682 | void SkBitmap::eraseARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b) const { |
| 683 | SkDEBUGCODE(this->validate();) |
| 684 | |
| 685 | if (0 == fWidth || 0 == fHeight || |
| 686 | kNo_Config == fConfig || kIndex8_Config == fConfig) { |
| 687 | return; |
| 688 | } |
| 689 | |
| 690 | SkAutoLockPixels alp(*this); |
| 691 | // perform this check after the lock call |
| 692 | if (!this->readyToDraw()) { |
| 693 | return; |
| 694 | } |
| 695 | |
| 696 | int height = fHeight; |
| 697 | const int width = fWidth; |
| 698 | const int rowBytes = fRowBytes; |
| 699 | |
| 700 | // make rgb premultiplied |
| 701 | if (255 != a) { |
| 702 | r = SkAlphaMul(r, a); |
| 703 | g = SkAlphaMul(g, a); |
| 704 | b = SkAlphaMul(b, a); |
| 705 | } |
| 706 | |
| 707 | switch (fConfig) { |
| 708 | case kA1_Config: { |
| 709 | uint8_t* p = (uint8_t*)fPixels; |
| 710 | const int count = (width + 7) >> 3; |
| 711 | a = (a >> 7) ? 0xFF : 0; |
| 712 | SkASSERT(count <= rowBytes); |
| 713 | while (--height >= 0) { |
| 714 | memset(p, a, count); |
| 715 | p += rowBytes; |
| 716 | } |
| 717 | break; |
| 718 | } |
| 719 | case kA8_Config: { |
| 720 | uint8_t* p = (uint8_t*)fPixels; |
| 721 | while (--height >= 0) { |
| 722 | memset(p, a, width); |
| 723 | p += rowBytes; |
| 724 | } |
| 725 | break; |
| 726 | } |
| 727 | case kARGB_4444_Config: |
| 728 | case kRGB_565_Config: { |
| 729 | uint16_t* p = (uint16_t*)fPixels; |
| 730 | uint16_t v; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 731 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 732 | if (kARGB_4444_Config == fConfig) { |
| 733 | v = SkPackARGB4444(a >> 4, r >> 4, g >> 4, b >> 4); |
| 734 | } else { // kRGB_565_Config |
| 735 | v = SkPackRGB16(r >> (8 - SK_R16_BITS), g >> (8 - SK_G16_BITS), |
| 736 | b >> (8 - SK_B16_BITS)); |
| 737 | } |
| 738 | while (--height >= 0) { |
| 739 | sk_memset16(p, v, width); |
| 740 | p = (uint16_t*)((char*)p + rowBytes); |
| 741 | } |
| 742 | break; |
| 743 | } |
| 744 | case kARGB_8888_Config: { |
| 745 | uint32_t* p = (uint32_t*)fPixels; |
| 746 | uint32_t v = SkPackARGB32(a, r, g, b); |
| 747 | |
| 748 | while (--height >= 0) { |
| 749 | sk_memset32(p, v, width); |
| 750 | p = (uint32_t*)((char*)p + rowBytes); |
| 751 | } |
| 752 | break; |
| 753 | } |
| 754 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 755 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 756 | this->notifyPixelsChanged(); |
| 757 | } |
| 758 | |
| 759 | ////////////////////////////////////////////////////////////////////////////////////// |
| 760 | ////////////////////////////////////////////////////////////////////////////////////// |
| 761 | |
| 762 | #define SUB_OFFSET_FAILURE ((size_t)-1) |
| 763 | |
| 764 | static size_t getSubOffset(const SkBitmap& bm, int x, int y) { |
| 765 | SkASSERT((unsigned)x < (unsigned)bm.width()); |
| 766 | SkASSERT((unsigned)y < (unsigned)bm.height()); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 767 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 768 | switch (bm.getConfig()) { |
| 769 | case SkBitmap::kA8_Config: |
| 770 | case SkBitmap:: kIndex8_Config: |
| 771 | // x is fine as is for the calculation |
| 772 | break; |
| 773 | |
| 774 | case SkBitmap::kRGB_565_Config: |
| 775 | case SkBitmap::kARGB_4444_Config: |
| 776 | x <<= 1; |
| 777 | break; |
| 778 | |
| 779 | case SkBitmap::kARGB_8888_Config: |
| 780 | x <<= 2; |
| 781 | break; |
| 782 | |
| 783 | case SkBitmap::kNo_Config: |
| 784 | case SkBitmap::kA1_Config: |
| 785 | default: |
| 786 | return SUB_OFFSET_FAILURE; |
| 787 | } |
| 788 | return y * bm.rowBytes() + x; |
| 789 | } |
| 790 | |
| 791 | bool SkBitmap::extractSubset(SkBitmap* result, const SkIRect& subset) const { |
| 792 | SkDEBUGCODE(this->validate();) |
| 793 | |
djsollen@google.com | 56f8f33 | 2012-07-26 14:48:52 +0000 | [diff] [blame] | 794 | if (NULL == result || (NULL == fPixelRef && NULL == fPixels)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 795 | return false; // no src pixels |
| 796 | } |
| 797 | |
| 798 | SkIRect srcRect, r; |
| 799 | srcRect.set(0, 0, this->width(), this->height()); |
| 800 | if (!r.intersect(srcRect, subset)) { |
| 801 | return false; // r is empty (i.e. no intersection) |
| 802 | } |
| 803 | |
| 804 | if (kRLE_Index8_Config == fConfig) { |
| 805 | SkAutoLockPixels alp(*this); |
| 806 | // don't call readyToDraw(), since we can operate w/o a colortable |
| 807 | // at this stage |
| 808 | if (this->getPixels() == NULL) { |
| 809 | return false; |
| 810 | } |
| 811 | SkBitmap bm; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 812 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 813 | bm.setConfig(kIndex8_Config, r.width(), r.height()); |
| 814 | bm.allocPixels(this->getColorTable()); |
| 815 | if (NULL == bm.getPixels()) { |
| 816 | return false; |
| 817 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 818 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 819 | const RLEPixels* rle = (const RLEPixels*)this->getPixels(); |
| 820 | uint8_t* dst = bm.getAddr8(0, 0); |
| 821 | const int width = bm.width(); |
| 822 | const int rowBytes = bm.rowBytes(); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 823 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 824 | for (int y = r.fTop; y < r.fBottom; y++) { |
| 825 | SkPackBits::Unpack8(dst, r.fLeft, width, rle->packedAtY(y)); |
| 826 | dst += rowBytes; |
| 827 | } |
| 828 | result->swap(bm); |
| 829 | return true; |
| 830 | } |
| 831 | |
| 832 | size_t offset = getSubOffset(*this, r.fLeft, r.fTop); |
| 833 | if (SUB_OFFSET_FAILURE == offset) { |
| 834 | return false; // config not supported |
| 835 | } |
| 836 | |
| 837 | SkBitmap dst; |
| 838 | dst.setConfig(this->config(), r.width(), r.height(), this->rowBytes()); |
skyostil@google.com | 0eb7576 | 2012-01-16 10:45:53 +0000 | [diff] [blame] | 839 | dst.setIsVolatile(this->isVolatile()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 840 | |
| 841 | if (fPixelRef) { |
| 842 | // share the pixelref with a custom offset |
| 843 | dst.setPixelRef(fPixelRef, fPixelRefOffset + offset); |
djsollen@google.com | 56f8f33 | 2012-07-26 14:48:52 +0000 | [diff] [blame] | 844 | } else { |
| 845 | // share the pixels (owned by the caller) |
| 846 | dst.setPixels((char*)fPixels + offset, this->getColorTable()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 847 | } |
| 848 | SkDEBUGCODE(dst.validate();) |
| 849 | |
| 850 | // we know we're good, so commit to result |
| 851 | result->swap(dst); |
| 852 | return true; |
| 853 | } |
| 854 | |
| 855 | /////////////////////////////////////////////////////////////////////////////// |
| 856 | |
| 857 | #include "SkCanvas.h" |
| 858 | #include "SkPaint.h" |
| 859 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 860 | bool SkBitmap::canCopyTo(Config dstConfig) const { |
| 861 | if (this->getConfig() == kNo_Config) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 862 | return false; |
| 863 | } |
| 864 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 865 | bool sameConfigs = (this->config() == dstConfig); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 866 | switch (dstConfig) { |
| 867 | case kA8_Config: |
| 868 | case kARGB_4444_Config: |
| 869 | case kRGB_565_Config: |
| 870 | case kARGB_8888_Config: |
| 871 | break; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 872 | case kA1_Config: |
| 873 | case kIndex8_Config: |
| 874 | if (!sameConfigs) { |
| 875 | return false; |
| 876 | } |
| 877 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 878 | default: |
| 879 | return false; |
| 880 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 881 | |
| 882 | // do not copy src if srcConfig == kA1_Config while dstConfig != kA1_Config |
| 883 | if (this->getConfig() == kA1_Config && !sameConfigs) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 884 | return false; |
| 885 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 886 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 887 | return true; |
| 888 | } |
| 889 | |
| 890 | bool SkBitmap::copyTo(SkBitmap* dst, Config dstConfig, Allocator* alloc) const { |
| 891 | if (!this->canCopyTo(dstConfig)) { |
| 892 | return false; |
| 893 | } |
| 894 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 895 | // if we have a texture, first get those pixels |
| 896 | SkBitmap tmpSrc; |
| 897 | const SkBitmap* src = this; |
| 898 | |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 899 | if (fPixelRef && fPixelRef->readPixels(&tmpSrc)) { |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 900 | SkASSERT(tmpSrc.width() == this->width()); |
| 901 | SkASSERT(tmpSrc.height() == this->height()); |
| 902 | |
| 903 | // did we get lucky and we can just return tmpSrc? |
| 904 | if (tmpSrc.config() == dstConfig && NULL == alloc) { |
| 905 | dst->swap(tmpSrc); |
| 906 | return true; |
| 907 | } |
| 908 | |
| 909 | // fall through to the raster case |
| 910 | src = &tmpSrc; |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 911 | } |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 912 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 913 | // we lock this now, since we may need its colortable |
| 914 | SkAutoLockPixels srclock(*src); |
| 915 | if (!src->readyToDraw()) { |
| 916 | return false; |
| 917 | } |
| 918 | |
| 919 | SkBitmap tmpDst; |
| 920 | tmpDst.setConfig(dstConfig, src->width(), src->height()); |
| 921 | |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 922 | // allocate colortable if srcConfig == kIndex8_Config |
| 923 | SkColorTable* ctable = (dstConfig == kIndex8_Config) ? |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 924 | new SkColorTable(*src->getColorTable()) : NULL; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 925 | SkAutoUnref au(ctable); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 926 | if (!tmpDst.allocPixels(alloc, ctable)) { |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 927 | return false; |
| 928 | } |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 929 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 930 | if (!tmpDst.readyToDraw()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 931 | // allocator/lock failed |
| 932 | return false; |
| 933 | } |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 934 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 935 | /* do memcpy for the same configs cases, else use drawing |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 936 | */ |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 937 | if (src->config() == dstConfig) { |
| 938 | if (tmpDst.getSize() == src->getSize()) { |
| 939 | memcpy(tmpDst.getPixels(), src->getPixels(), src->getSafeSize()); |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 940 | } else { |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 941 | const char* srcP = reinterpret_cast<const char*>(src->getPixels()); |
| 942 | char* dstP = reinterpret_cast<char*>(tmpDst.getPixels()); |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 943 | // 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] | 944 | size_t bytesToCopy = tmpDst.width() * tmpDst.bytesPerPixel(); |
| 945 | for (int y = 0; y < tmpDst.height(); y++) { |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 946 | memcpy(dstP, srcP, bytesToCopy); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 947 | srcP += src->rowBytes(); |
| 948 | dstP += tmpDst.rowBytes(); |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 949 | } |
| 950 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 951 | } else { |
| 952 | // 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] | 953 | if (!src->isOpaque()) { |
| 954 | tmpDst.eraseColor(0); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 955 | } |
| 956 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 957 | SkCanvas canvas(tmpDst); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 958 | SkPaint paint; |
| 959 | |
| 960 | paint.setDither(true); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 961 | canvas.drawBitmap(*src, 0, 0, &paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 962 | } |
| 963 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 964 | tmpDst.setIsOpaque(src->isOpaque()); |
reed@android.com | cafc9f9 | 2009-08-22 03:44:57 +0000 | [diff] [blame] | 965 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 966 | dst->swap(tmpDst); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 967 | return true; |
| 968 | } |
| 969 | |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 970 | bool SkBitmap::deepCopyTo(SkBitmap* dst, Config dstConfig) const { |
| 971 | if (!this->canCopyTo(dstConfig)) { |
| 972 | return false; |
| 973 | } |
| 974 | |
| 975 | // If we have a PixelRef, and it supports deep copy, use it. |
| 976 | // Currently supported only by texture-backed bitmaps. |
| 977 | if (fPixelRef) { |
| 978 | SkPixelRef* pixelRef = fPixelRef->deepCopy(dstConfig); |
| 979 | if (pixelRef) { |
| 980 | dst->setConfig(dstConfig, fWidth, fHeight); |
| 981 | dst->setPixelRef(pixelRef)->unref(); |
| 982 | return true; |
| 983 | } |
| 984 | } |
| 985 | |
| 986 | if (this->getTexture()) { |
| 987 | return false; |
| 988 | } else { |
| 989 | return this->copyTo(dst, dstConfig, NULL); |
| 990 | } |
| 991 | } |
| 992 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 993 | /////////////////////////////////////////////////////////////////////////////// |
| 994 | /////////////////////////////////////////////////////////////////////////////// |
| 995 | |
| 996 | static void downsampleby2_proc32(SkBitmap* dst, int x, int y, |
| 997 | const SkBitmap& src) { |
| 998 | x <<= 1; |
| 999 | y <<= 1; |
| 1000 | const SkPMColor* p = src.getAddr32(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1001 | const SkPMColor* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1002 | SkPMColor c, ag, rb; |
| 1003 | |
| 1004 | c = *p; ag = (c >> 8) & 0xFF00FF; rb = c & 0xFF00FF; |
| 1005 | if (x < src.width() - 1) { |
| 1006 | p += 1; |
| 1007 | } |
| 1008 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1009 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1010 | p = baseP; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1011 | if (y < src.height() - 1) { |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1012 | p += src.rowBytes() >> 2; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1013 | } |
| 1014 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1015 | if (x < src.width() - 1) { |
| 1016 | p += 1; |
| 1017 | } |
| 1018 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1019 | |
| 1020 | *dst->getAddr32(x >> 1, y >> 1) = |
| 1021 | ((rb >> 2) & 0xFF00FF) | ((ag << 6) & 0xFF00FF00); |
| 1022 | } |
| 1023 | |
| 1024 | static inline uint32_t expand16(U16CPU c) { |
| 1025 | return (c & ~SK_G16_MASK_IN_PLACE) | ((c & SK_G16_MASK_IN_PLACE) << 16); |
| 1026 | } |
| 1027 | |
| 1028 | // returns dirt in the top 16bits, but we don't care, since we only |
| 1029 | // store the low 16bits. |
| 1030 | static inline U16CPU pack16(uint32_t c) { |
| 1031 | return (c & ~SK_G16_MASK_IN_PLACE) | ((c >> 16) & SK_G16_MASK_IN_PLACE); |
| 1032 | } |
| 1033 | |
| 1034 | static void downsampleby2_proc16(SkBitmap* dst, int x, int y, |
| 1035 | const SkBitmap& src) { |
| 1036 | x <<= 1; |
| 1037 | y <<= 1; |
| 1038 | const uint16_t* p = src.getAddr16(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1039 | const uint16_t* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1040 | SkPMColor c; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1041 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1042 | c = expand16(*p); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1043 | if (x < src.width() - 1) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1044 | p += 1; |
| 1045 | } |
| 1046 | c += expand16(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1047 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1048 | p = baseP; |
| 1049 | if (y < src.height() - 1) { |
| 1050 | p += src.rowBytes() >> 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1051 | } |
| 1052 | c += expand16(*p); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1053 | if (x < src.width() - 1) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1054 | p += 1; |
| 1055 | } |
| 1056 | c += expand16(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1057 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1058 | *dst->getAddr16(x >> 1, y >> 1) = (uint16_t)pack16(c >> 2); |
| 1059 | } |
| 1060 | |
| 1061 | static uint32_t expand4444(U16CPU c) { |
| 1062 | return (c & 0xF0F) | ((c & ~0xF0F) << 12); |
| 1063 | } |
| 1064 | |
| 1065 | static U16CPU collaps4444(uint32_t c) { |
| 1066 | return (c & 0xF0F) | ((c >> 12) & ~0xF0F); |
| 1067 | } |
| 1068 | |
| 1069 | static void downsampleby2_proc4444(SkBitmap* dst, int x, int y, |
| 1070 | const SkBitmap& src) { |
| 1071 | x <<= 1; |
| 1072 | y <<= 1; |
| 1073 | const uint16_t* p = src.getAddr16(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1074 | const uint16_t* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1075 | uint32_t c; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1076 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1077 | c = expand4444(*p); |
| 1078 | if (x < src.width() - 1) { |
| 1079 | p += 1; |
| 1080 | } |
| 1081 | c += expand4444(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1082 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1083 | p = baseP; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1084 | if (y < src.height() - 1) { |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1085 | p += src.rowBytes() >> 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1086 | } |
| 1087 | c += expand4444(*p); |
| 1088 | if (x < src.width() - 1) { |
| 1089 | p += 1; |
| 1090 | } |
| 1091 | c += expand4444(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1092 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1093 | *dst->getAddr16(x >> 1, y >> 1) = (uint16_t)collaps4444(c >> 2); |
| 1094 | } |
| 1095 | |
| 1096 | void SkBitmap::buildMipMap(bool forceRebuild) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1097 | if (forceRebuild) |
| 1098 | this->freeMipMap(); |
| 1099 | else if (fMipMap) |
| 1100 | return; // we're already built |
| 1101 | |
| 1102 | SkASSERT(NULL == fMipMap); |
| 1103 | |
| 1104 | void (*proc)(SkBitmap* dst, int x, int y, const SkBitmap& src); |
| 1105 | |
| 1106 | const SkBitmap::Config config = this->getConfig(); |
| 1107 | |
| 1108 | switch (config) { |
| 1109 | case kARGB_8888_Config: |
| 1110 | proc = downsampleby2_proc32; |
| 1111 | break; |
| 1112 | case kRGB_565_Config: |
| 1113 | proc = downsampleby2_proc16; |
| 1114 | break; |
| 1115 | case kARGB_4444_Config: |
| 1116 | proc = downsampleby2_proc4444; |
| 1117 | break; |
| 1118 | case kIndex8_Config: |
| 1119 | case kA8_Config: |
| 1120 | default: |
| 1121 | return; // don't build mipmaps for these configs |
| 1122 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 1123 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1124 | SkAutoLockPixels alp(*this); |
| 1125 | if (!this->readyToDraw()) { |
| 1126 | return; |
| 1127 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1128 | |
| 1129 | // whip through our loop to compute the exact size needed |
| 1130 | size_t size = 0; |
| 1131 | int maxLevels = 0; |
| 1132 | { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1133 | int width = this->width(); |
| 1134 | int height = this->height(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1135 | for (;;) { |
| 1136 | width >>= 1; |
| 1137 | height >>= 1; |
| 1138 | if (0 == width || 0 == height) { |
| 1139 | break; |
| 1140 | } |
| 1141 | size += ComputeRowBytes(config, width) * height; |
| 1142 | maxLevels += 1; |
| 1143 | } |
| 1144 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 1145 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1146 | // nothing to build |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1147 | if (0 == maxLevels) { |
| 1148 | return; |
| 1149 | } |
| 1150 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1151 | SkBitmap srcBM(*this); |
| 1152 | srcBM.lockPixels(); |
| 1153 | if (!srcBM.readyToDraw()) { |
| 1154 | return; |
| 1155 | } |
| 1156 | |
| 1157 | MipMap* mm = MipMap::Alloc(maxLevels, size); |
| 1158 | if (NULL == mm) { |
| 1159 | return; |
| 1160 | } |
| 1161 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1162 | MipLevel* level = mm->levels(); |
| 1163 | uint8_t* addr = (uint8_t*)mm->pixels(); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1164 | int width = this->width(); |
| 1165 | int height = this->height(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1166 | unsigned rowBytes = this->rowBytes(); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1167 | SkBitmap dstBM; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1168 | |
| 1169 | for (int i = 0; i < maxLevels; i++) { |
| 1170 | width >>= 1; |
| 1171 | height >>= 1; |
| 1172 | rowBytes = ComputeRowBytes(config, width); |
| 1173 | |
| 1174 | level[i].fPixels = addr; |
reed@android.com | f459a49 | 2009-03-27 12:33:50 +0000 | [diff] [blame] | 1175 | level[i].fWidth = width; |
| 1176 | level[i].fHeight = height; |
reed@android.com | 49f0ff2 | 2009-03-19 21:52:42 +0000 | [diff] [blame] | 1177 | level[i].fRowBytes = rowBytes; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1178 | |
| 1179 | dstBM.setConfig(config, width, height, rowBytes); |
| 1180 | dstBM.setPixels(addr); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1181 | |
bungeman@google.com | 7cf0e9e | 2012-07-25 16:09:10 +0000 | [diff] [blame] | 1182 | srcBM.lockPixels(); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1183 | for (int y = 0; y < height; y++) { |
| 1184 | for (int x = 0; x < width; x++) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1185 | proc(&dstBM, x, y, srcBM); |
| 1186 | } |
| 1187 | } |
bungeman@google.com | 7cf0e9e | 2012-07-25 16:09:10 +0000 | [diff] [blame] | 1188 | srcBM.unlockPixels(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1189 | |
| 1190 | srcBM = dstBM; |
| 1191 | addr += height * rowBytes; |
| 1192 | } |
| 1193 | SkASSERT(addr == (uint8_t*)mm->pixels() + size); |
| 1194 | fMipMap = mm; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1195 | } |
| 1196 | |
| 1197 | bool SkBitmap::hasMipMap() const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1198 | return fMipMap != NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1199 | } |
| 1200 | |
| 1201 | int SkBitmap::extractMipLevel(SkBitmap* dst, SkFixed sx, SkFixed sy) { |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 1202 | if (NULL == fMipMap) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1203 | return 0; |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 1204 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1205 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1206 | int level = ComputeMipLevel(sx, sy) >> 16; |
| 1207 | SkASSERT(level >= 0); |
| 1208 | if (level <= 0) { |
| 1209 | return 0; |
| 1210 | } |
| 1211 | |
| 1212 | if (level >= fMipMap->fLevelCount) { |
| 1213 | level = fMipMap->fLevelCount - 1; |
| 1214 | } |
| 1215 | if (dst) { |
| 1216 | const MipLevel& mip = fMipMap->levels()[level - 1]; |
| 1217 | dst->setConfig((SkBitmap::Config)this->config(), |
| 1218 | mip.fWidth, mip.fHeight, mip.fRowBytes); |
| 1219 | dst->setPixels(mip.fPixels); |
| 1220 | } |
| 1221 | return level; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1222 | } |
| 1223 | |
| 1224 | SkFixed SkBitmap::ComputeMipLevel(SkFixed sx, SkFixed sy) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1225 | sx = SkAbs32(sx); |
| 1226 | sy = SkAbs32(sy); |
| 1227 | if (sx < sy) { |
| 1228 | sx = sy; |
| 1229 | } |
| 1230 | if (sx < SK_Fixed1) { |
| 1231 | return 0; |
| 1232 | } |
| 1233 | int clz = SkCLZ(sx); |
| 1234 | SkASSERT(clz >= 1 && clz <= 15); |
| 1235 | return SkIntToFixed(15 - clz) + ((unsigned)(sx << (clz + 1)) >> 16); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1236 | } |
| 1237 | |
| 1238 | /////////////////////////////////////////////////////////////////////////////// |
| 1239 | |
tomhudson@google.com | a87cd2a | 2011-06-15 16:50:27 +0000 | [diff] [blame] | 1240 | static bool GetBitmapAlpha(const SkBitmap& src, uint8_t* SK_RESTRICT alpha, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1241 | int alphaRowBytes) { |
| 1242 | SkASSERT(alpha != NULL); |
| 1243 | SkASSERT(alphaRowBytes >= src.width()); |
| 1244 | |
| 1245 | SkBitmap::Config config = src.getConfig(); |
| 1246 | int w = src.width(); |
| 1247 | int h = src.height(); |
| 1248 | int rb = src.rowBytes(); |
| 1249 | |
reed@android.com | 1cdcb51 | 2009-08-24 19:11:00 +0000 | [diff] [blame] | 1250 | SkAutoLockPixels alp(src); |
| 1251 | if (!src.readyToDraw()) { |
| 1252 | // zero out the alpha buffer and return |
| 1253 | while (--h >= 0) { |
| 1254 | memset(alpha, 0, w); |
| 1255 | alpha += alphaRowBytes; |
| 1256 | } |
| 1257 | return false; |
| 1258 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 1259 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1260 | if (SkBitmap::kA8_Config == config && !src.isOpaque()) { |
| 1261 | const uint8_t* s = src.getAddr8(0, 0); |
| 1262 | while (--h >= 0) { |
| 1263 | memcpy(alpha, s, w); |
| 1264 | s += rb; |
| 1265 | alpha += alphaRowBytes; |
| 1266 | } |
| 1267 | } else if (SkBitmap::kARGB_8888_Config == config && !src.isOpaque()) { |
| 1268 | const SkPMColor* SK_RESTRICT s = src.getAddr32(0, 0); |
| 1269 | while (--h >= 0) { |
| 1270 | for (int x = 0; x < w; x++) { |
| 1271 | alpha[x] = SkGetPackedA32(s[x]); |
| 1272 | } |
| 1273 | s = (const SkPMColor*)((const char*)s + rb); |
| 1274 | alpha += alphaRowBytes; |
| 1275 | } |
| 1276 | } else if (SkBitmap::kARGB_4444_Config == config && !src.isOpaque()) { |
| 1277 | const SkPMColor16* SK_RESTRICT s = src.getAddr16(0, 0); |
| 1278 | while (--h >= 0) { |
| 1279 | for (int x = 0; x < w; x++) { |
| 1280 | alpha[x] = SkPacked4444ToA32(s[x]); |
| 1281 | } |
| 1282 | s = (const SkPMColor16*)((const char*)s + rb); |
| 1283 | alpha += alphaRowBytes; |
| 1284 | } |
| 1285 | } else if (SkBitmap::kIndex8_Config == config && !src.isOpaque()) { |
| 1286 | SkColorTable* ct = src.getColorTable(); |
| 1287 | if (ct) { |
| 1288 | const SkPMColor* SK_RESTRICT table = ct->lockColors(); |
| 1289 | const uint8_t* SK_RESTRICT s = src.getAddr8(0, 0); |
| 1290 | while (--h >= 0) { |
| 1291 | for (int x = 0; x < w; x++) { |
| 1292 | alpha[x] = SkGetPackedA32(table[s[x]]); |
| 1293 | } |
| 1294 | s += rb; |
| 1295 | alpha += alphaRowBytes; |
| 1296 | } |
| 1297 | ct->unlockColors(false); |
| 1298 | } |
| 1299 | } else { // src is opaque, so just fill alpha[] with 0xFF |
| 1300 | memset(alpha, 0xFF, h * alphaRowBytes); |
| 1301 | } |
reed@android.com | 1cdcb51 | 2009-08-24 19:11:00 +0000 | [diff] [blame] | 1302 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1303 | } |
| 1304 | |
| 1305 | #include "SkPaint.h" |
| 1306 | #include "SkMaskFilter.h" |
| 1307 | #include "SkMatrix.h" |
| 1308 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1309 | bool SkBitmap::extractAlpha(SkBitmap* dst, const SkPaint* paint, |
djsollen@google.com | 57f4969 | 2011-02-23 20:46:31 +0000 | [diff] [blame] | 1310 | Allocator *allocator, SkIPoint* offset) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1311 | SkDEBUGCODE(this->validate();) |
| 1312 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1313 | SkBitmap tmpBitmap; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1314 | SkMatrix identity; |
| 1315 | SkMask srcM, dstM; |
| 1316 | |
| 1317 | srcM.fBounds.set(0, 0, this->width(), this->height()); |
| 1318 | srcM.fRowBytes = SkAlign4(this->width()); |
| 1319 | srcM.fFormat = SkMask::kA8_Format; |
| 1320 | |
| 1321 | SkMaskFilter* filter = paint ? paint->getMaskFilter() : NULL; |
| 1322 | |
| 1323 | // compute our (larger?) dst bounds if we have a filter |
| 1324 | if (NULL != filter) { |
| 1325 | identity.reset(); |
| 1326 | srcM.fImage = NULL; |
| 1327 | if (!filter->filterMask(&dstM, srcM, identity, NULL)) { |
| 1328 | goto NO_FILTER_CASE; |
| 1329 | } |
| 1330 | dstM.fRowBytes = SkAlign4(dstM.fBounds.width()); |
| 1331 | } else { |
| 1332 | NO_FILTER_CASE: |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1333 | tmpBitmap.setConfig(SkBitmap::kA8_Config, this->width(), this->height(), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1334 | srcM.fRowBytes); |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1335 | if (!tmpBitmap.allocPixels(allocator, NULL)) { |
| 1336 | // Allocation of pixels for alpha bitmap failed. |
| 1337 | SkDebugf("extractAlpha failed to allocate (%d,%d) alpha bitmap\n", |
| 1338 | tmpBitmap.width(), tmpBitmap.height()); |
| 1339 | return false; |
| 1340 | } |
| 1341 | GetBitmapAlpha(*this, tmpBitmap.getAddr8(0, 0), srcM.fRowBytes); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1342 | if (offset) { |
| 1343 | offset->set(0, 0); |
| 1344 | } |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1345 | tmpBitmap.swap(*dst); |
| 1346 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1347 | } |
bungeman@google.com | 02f5584 | 2011-10-04 21:25:00 +0000 | [diff] [blame] | 1348 | srcM.fImage = SkMask::AllocImage(srcM.computeImageSize()); |
| 1349 | SkAutoMaskFreeImage srcCleanup(srcM.fImage); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1350 | |
| 1351 | GetBitmapAlpha(*this, srcM.fImage, srcM.fRowBytes); |
| 1352 | if (!filter->filterMask(&dstM, srcM, identity, NULL)) { |
| 1353 | goto NO_FILTER_CASE; |
| 1354 | } |
bungeman@google.com | 02f5584 | 2011-10-04 21:25:00 +0000 | [diff] [blame] | 1355 | SkAutoMaskFreeImage dstCleanup(dstM.fImage); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1356 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1357 | tmpBitmap.setConfig(SkBitmap::kA8_Config, dstM.fBounds.width(), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1358 | dstM.fBounds.height(), dstM.fRowBytes); |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1359 | if (!tmpBitmap.allocPixels(allocator, NULL)) { |
| 1360 | // Allocation of pixels for alpha bitmap failed. |
| 1361 | SkDebugf("extractAlpha failed to allocate (%d,%d) alpha bitmap\n", |
| 1362 | tmpBitmap.width(), tmpBitmap.height()); |
| 1363 | return false; |
| 1364 | } |
| 1365 | memcpy(tmpBitmap.getPixels(), dstM.fImage, dstM.computeImageSize()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1366 | if (offset) { |
| 1367 | offset->set(dstM.fBounds.fLeft, dstM.fBounds.fTop); |
| 1368 | } |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1369 | SkDEBUGCODE(tmpBitmap.validate();) |
| 1370 | |
| 1371 | tmpBitmap.swap(*dst); |
| 1372 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1373 | } |
| 1374 | |
| 1375 | /////////////////////////////////////////////////////////////////////////////// |
| 1376 | |
| 1377 | enum { |
| 1378 | SERIALIZE_PIXELTYPE_NONE, |
djsollen@google.com | 56f8f33 | 2012-07-26 14:48:52 +0000 | [diff] [blame] | 1379 | SERIALIZE_PIXELTYPE_RAW_WITH_CTABLE, |
| 1380 | SERIALIZE_PIXELTYPE_RAW_NO_CTABLE, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1381 | SERIALIZE_PIXELTYPE_REF_DATA, |
tomhudson@google.com | 1f90287 | 2012-06-01 13:15:47 +0000 | [diff] [blame] | 1382 | SERIALIZE_PIXELTYPE_REF_PTR |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1383 | }; |
| 1384 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1385 | /* |
| 1386 | It is tricky to know how much to flatten. If we don't have a pixelref (i.e. |
| 1387 | we just have pixels, then we can only flatten the pixels, or write out an |
| 1388 | empty bitmap. |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1389 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1390 | With a pixelref, we still have the question of recognizing when two sitings |
| 1391 | of the same pixelref are the same, and when they are different. Perhaps we |
| 1392 | should look at the generationID and keep a record of that in some dictionary |
| 1393 | associated with the buffer. SkGLTextureCache does this sort of thing to know |
| 1394 | when to create a new texture. |
| 1395 | */ |
| 1396 | void SkBitmap::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 1397 | buffer.write32(fWidth); |
| 1398 | buffer.write32(fHeight); |
| 1399 | buffer.write32(fRowBytes); |
| 1400 | buffer.write8(fConfig); |
| 1401 | buffer.writeBool(this->isOpaque()); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1402 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1403 | /* If we are called in this mode, then it is up to the caller to manage |
| 1404 | the owner-counts on the pixelref, as we just record the ptr itself. |
| 1405 | */ |
| 1406 | if (!buffer.persistBitmapPixels()) { |
| 1407 | if (fPixelRef) { |
| 1408 | buffer.write8(SERIALIZE_PIXELTYPE_REF_PTR); |
| 1409 | buffer.write32(fPixelRefOffset); |
| 1410 | buffer.writeRefCnt(fPixelRef); |
| 1411 | return; |
| 1412 | } else { |
| 1413 | // we ignore the non-persist request, since we don't have a ref |
| 1414 | // ... or we could just write an empty bitmap... |
| 1415 | // (true) will write an empty bitmap, (false) will flatten the pix |
| 1416 | if (true) { |
| 1417 | buffer.write8(SERIALIZE_PIXELTYPE_NONE); |
| 1418 | return; |
| 1419 | } |
| 1420 | } |
| 1421 | } |
| 1422 | |
| 1423 | if (fPixelRef) { |
djsollen@google.com | 5370cd9 | 2012-03-28 20:47:01 +0000 | [diff] [blame] | 1424 | if (fPixelRef->getFactory()) { |
| 1425 | buffer.write8(SERIALIZE_PIXELTYPE_REF_DATA); |
| 1426 | buffer.write32(fPixelRefOffset); |
| 1427 | buffer.writeFlattenable(fPixelRef); |
| 1428 | return; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1429 | } |
| 1430 | // if we get here, we can't record the pixels |
| 1431 | buffer.write8(SERIALIZE_PIXELTYPE_NONE); |
djsollen@google.com | 56f8f33 | 2012-07-26 14:48:52 +0000 | [diff] [blame] | 1432 | } else if (fPixels) { |
| 1433 | if (fColorTable) { |
| 1434 | buffer.write8(SERIALIZE_PIXELTYPE_RAW_WITH_CTABLE); |
| 1435 | buffer.writeFlattenable(fColorTable); |
| 1436 | } else { |
| 1437 | buffer.write8(SERIALIZE_PIXELTYPE_RAW_NO_CTABLE); |
| 1438 | } |
| 1439 | buffer.writePad(fPixels, this->getSafeSize()); |
| 1440 | // There is no writeZeroPad() fcn, so write individual bytes. |
| 1441 | if (this->getSize() > this->getSafeSize()) { |
| 1442 | size_t deltaSize = this->getSize() - this->getSafeSize(); |
| 1443 | // Need aligned pointer to write into due to internal implementa- |
| 1444 | // tion of SkWriter32. |
| 1445 | memset(buffer.reserve(SkAlign4(deltaSize)), 0, deltaSize); |
| 1446 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1447 | } else { |
| 1448 | buffer.write8(SERIALIZE_PIXELTYPE_NONE); |
| 1449 | } |
| 1450 | } |
| 1451 | |
| 1452 | void SkBitmap::unflatten(SkFlattenableReadBuffer& buffer) { |
| 1453 | this->reset(); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1454 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1455 | int width = buffer.readInt(); |
| 1456 | int height = buffer.readInt(); |
| 1457 | int rowBytes = buffer.readInt(); |
| 1458 | int config = buffer.readU8(); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1459 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1460 | this->setConfig((Config)config, width, height, rowBytes); |
| 1461 | this->setIsOpaque(buffer.readBool()); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1462 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1463 | int reftype = buffer.readU8(); |
| 1464 | switch (reftype) { |
| 1465 | case SERIALIZE_PIXELTYPE_REF_PTR: { |
| 1466 | size_t offset = buffer.readU32(); |
| 1467 | SkPixelRef* pr = (SkPixelRef*)buffer.readRefCnt(); |
| 1468 | this->setPixelRef(pr, offset); |
| 1469 | break; |
| 1470 | } |
| 1471 | case SERIALIZE_PIXELTYPE_REF_DATA: { |
| 1472 | size_t offset = buffer.readU32(); |
djsollen@google.com | 5370cd9 | 2012-03-28 20:47:01 +0000 | [diff] [blame] | 1473 | SkPixelRef* pr = static_cast<SkPixelRef*>(buffer.readFlattenable()); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 1474 | SkSafeUnref(this->setPixelRef(pr, offset)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1475 | break; |
| 1476 | } |
djsollen@google.com | 56f8f33 | 2012-07-26 14:48:52 +0000 | [diff] [blame] | 1477 | case SERIALIZE_PIXELTYPE_RAW_WITH_CTABLE: |
| 1478 | case SERIALIZE_PIXELTYPE_RAW_NO_CTABLE: { |
| 1479 | SkColorTable* ctable = NULL; |
| 1480 | if (SERIALIZE_PIXELTYPE_RAW_WITH_CTABLE == reftype) { |
| 1481 | ctable = static_cast<SkColorTable*>(buffer.readFlattenable()); |
| 1482 | } |
| 1483 | size_t size = this->getSize(); |
| 1484 | if (this->allocPixels(ctable)) { |
| 1485 | this->lockPixels(); |
| 1486 | // Just read what we need. |
| 1487 | buffer.read(this->getPixels(), this->getSafeSize()); |
| 1488 | // Keep aligned for subsequent reads. |
| 1489 | buffer.skip(size - this->getSafeSize()); |
| 1490 | this->unlockPixels(); |
| 1491 | } else { |
| 1492 | buffer.skip(size); // Still skip the full-sized buffer though. |
| 1493 | } |
| 1494 | SkSafeUnref(ctable); |
| 1495 | break; |
| 1496 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1497 | case SERIALIZE_PIXELTYPE_NONE: |
| 1498 | break; |
| 1499 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 1500 | SkDEBUGFAIL("unrecognized pixeltype in serialized data"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1501 | sk_throw(); |
| 1502 | } |
| 1503 | } |
| 1504 | |
| 1505 | /////////////////////////////////////////////////////////////////////////////// |
| 1506 | |
| 1507 | SkBitmap::RLEPixels::RLEPixels(int width, int height) { |
| 1508 | fHeight = height; |
| 1509 | fYPtrs = (uint8_t**)sk_malloc_throw(height * sizeof(uint8_t*)); |
reed@android.com | 4516f47 | 2009-06-29 16:25:36 +0000 | [diff] [blame] | 1510 | sk_bzero(fYPtrs, height * sizeof(uint8_t*)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1511 | } |
| 1512 | |
| 1513 | SkBitmap::RLEPixels::~RLEPixels() { |
| 1514 | sk_free(fYPtrs); |
| 1515 | } |
| 1516 | |
| 1517 | /////////////////////////////////////////////////////////////////////////////// |
| 1518 | |
| 1519 | #ifdef SK_DEBUG |
| 1520 | void SkBitmap::validate() const { |
| 1521 | SkASSERT(fConfig < kConfigCount); |
| 1522 | SkASSERT(fRowBytes >= (unsigned)ComputeRowBytes((Config)fConfig, fWidth)); |
junov@google.com | 4ee7ae5 | 2011-06-30 17:30:49 +0000 | [diff] [blame] | 1523 | SkASSERT(fFlags <= (kImageIsOpaque_Flag | kImageIsVolatile_Flag)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1524 | SkASSERT(fPixelLockCount >= 0); |
| 1525 | SkASSERT(NULL == fColorTable || (unsigned)fColorTable->getRefCnt() < 10000); |
| 1526 | SkASSERT((uint8_t)ComputeBytesPerPixel((Config)fConfig) == fBytesPerPixel); |
| 1527 | |
| 1528 | #if 0 // these asserts are not thread-correct, so disable for now |
| 1529 | if (fPixelRef) { |
| 1530 | if (fPixelLockCount > 0) { |
reed@google.com | ff0da4f | 2012-05-17 13:14:52 +0000 | [diff] [blame] | 1531 | SkASSERT(fPixelRef->isLocked()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1532 | } else { |
| 1533 | SkASSERT(NULL == fPixels); |
| 1534 | SkASSERT(NULL == fColorTable); |
| 1535 | } |
| 1536 | } |
| 1537 | #endif |
| 1538 | } |
| 1539 | #endif |