epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 3 | * Copyright 2008 The Android Open Source Project |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 4 | * |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 7 | */ |
| 8 | |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 9 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 10 | #include "SkBitmap.h" |
| 11 | #include "SkColorPriv.h" |
| 12 | #include "SkDither.h" |
| 13 | #include "SkFlattenable.h" |
commit-bot@chromium.org | 6e3e422 | 2013-11-06 10:08:30 +0000 | [diff] [blame] | 14 | #include "SkImagePriv.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 15 | #include "SkMallocPixelRef.h" |
| 16 | #include "SkMask.h" |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 17 | #include "SkOrderedReadBuffer.h" |
| 18 | #include "SkOrderedWriteBuffer.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 19 | #include "SkPixelRef.h" |
| 20 | #include "SkThread.h" |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 21 | #include "SkUnPreMultiply.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 22 | #include "SkUtils.h" |
commit-bot@chromium.org | c0b7e10 | 2013-10-23 17:06:21 +0000 | [diff] [blame] | 23 | #include "SkValidationUtils.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 24 | #include "SkPackBits.h" |
| 25 | #include <new> |
| 26 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 27 | struct MipLevel { |
| 28 | void* fPixels; |
| 29 | uint32_t fRowBytes; |
reed@android.com | f459a49 | 2009-03-27 12:33:50 +0000 | [diff] [blame] | 30 | uint32_t fWidth, fHeight; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 31 | }; |
| 32 | |
| 33 | struct SkBitmap::MipMap : SkNoncopyable { |
| 34 | int32_t fRefCnt; |
| 35 | int fLevelCount; |
| 36 | // MipLevel fLevel[fLevelCount]; |
| 37 | // Pixels[] |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 38 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 39 | static MipMap* Alloc(int levelCount, size_t pixelSize) { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 40 | if (levelCount < 0) { |
| 41 | return NULL; |
| 42 | } |
reed@google.com | a306d93 | 2013-12-30 14:14:42 +0000 | [diff] [blame^] | 43 | int64_t size = (levelCount + 1) * sizeof(MipLevel); |
| 44 | size += sizeof(MipMap) + pixelSize; |
| 45 | if (!sk_64_isS32(size)) { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 46 | return NULL; |
| 47 | } |
reed@google.com | a306d93 | 2013-12-30 14:14:42 +0000 | [diff] [blame^] | 48 | MipMap* mm = (MipMap*)sk_malloc_throw(sk_64_asS32(size)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 49 | mm->fRefCnt = 1; |
| 50 | mm->fLevelCount = levelCount; |
| 51 | return mm; |
| 52 | } |
| 53 | |
| 54 | const MipLevel* levels() const { return (const MipLevel*)(this + 1); } |
| 55 | MipLevel* levels() { return (MipLevel*)(this + 1); } |
| 56 | |
| 57 | const void* pixels() const { return levels() + fLevelCount; } |
| 58 | void* pixels() { return levels() + fLevelCount; } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 59 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 60 | void ref() { |
| 61 | if (SK_MaxS32 == sk_atomic_inc(&fRefCnt)) { |
| 62 | sk_throw(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 63 | } |
| 64 | } |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 65 | void unref() { |
| 66 | SkASSERT(fRefCnt > 0); |
| 67 | if (sk_atomic_dec(&fRefCnt) == 1) { |
| 68 | sk_free(this); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 69 | } |
| 70 | } |
| 71 | }; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 72 | |
| 73 | /////////////////////////////////////////////////////////////////////////////// |
| 74 | /////////////////////////////////////////////////////////////////////////////// |
| 75 | |
| 76 | SkBitmap::SkBitmap() { |
reed@android.com | 4516f47 | 2009-06-29 16:25:36 +0000 | [diff] [blame] | 77 | sk_bzero(this, sizeof(*this)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 78 | } |
| 79 | |
| 80 | SkBitmap::SkBitmap(const SkBitmap& src) { |
| 81 | SkDEBUGCODE(src.validate();) |
reed@android.com | 4516f47 | 2009-06-29 16:25:36 +0000 | [diff] [blame] | 82 | sk_bzero(this, sizeof(*this)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 83 | *this = src; |
| 84 | SkDEBUGCODE(this->validate();) |
| 85 | } |
| 86 | |
| 87 | SkBitmap::~SkBitmap() { |
| 88 | SkDEBUGCODE(this->validate();) |
| 89 | this->freePixels(); |
| 90 | } |
| 91 | |
| 92 | SkBitmap& SkBitmap::operator=(const SkBitmap& src) { |
| 93 | if (this != &src) { |
| 94 | this->freePixels(); |
| 95 | memcpy(this, &src, sizeof(src)); |
| 96 | |
| 97 | // inc src reference counts |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 98 | SkSafeRef(src.fPixelRef); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 99 | SkSafeRef(src.fMipMap); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 100 | |
| 101 | // we reset our locks if we get blown away |
| 102 | fPixelLockCount = 0; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 103 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 104 | /* The src could be in 3 states |
| 105 | 1. no pixelref, in which case we just copy/ref the pixels/ctable |
| 106 | 2. unlocked pixelref, pixels/ctable should be null |
| 107 | 3. locked pixelref, we should lock the ref again ourselves |
| 108 | */ |
| 109 | if (NULL == fPixelRef) { |
| 110 | // leave fPixels as it is |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 111 | SkSafeRef(fColorTable); // ref the user's ctable if present |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 112 | } else { // we have a pixelref, so pixels/ctable reflect it |
| 113 | // ignore the values from the memcpy |
| 114 | fPixels = NULL; |
| 115 | fColorTable = NULL; |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 116 | // Note that what to for genID is somewhat arbitrary. We have no |
| 117 | // way to track changes to raw pixels across multiple SkBitmaps. |
| 118 | // Would benefit from an SkRawPixelRef type created by |
| 119 | // setPixels. |
| 120 | // Just leave the memcpy'ed one but they'll get out of sync |
| 121 | // as soon either is modified. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 122 | } |
| 123 | } |
| 124 | |
| 125 | SkDEBUGCODE(this->validate();) |
| 126 | return *this; |
| 127 | } |
| 128 | |
| 129 | void SkBitmap::swap(SkBitmap& other) { |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 130 | SkTSwap(fColorTable, other.fColorTable); |
| 131 | SkTSwap(fPixelRef, other.fPixelRef); |
| 132 | SkTSwap(fPixelRefOffset, other.fPixelRefOffset); |
| 133 | SkTSwap(fPixelLockCount, other.fPixelLockCount); |
| 134 | SkTSwap(fMipMap, other.fMipMap); |
| 135 | SkTSwap(fPixels, other.fPixels); |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 136 | SkTSwap(fRowBytes, other.fRowBytes); |
| 137 | SkTSwap(fWidth, other.fWidth); |
| 138 | SkTSwap(fHeight, other.fHeight); |
| 139 | SkTSwap(fConfig, other.fConfig); |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 140 | SkTSwap(fAlphaType, other.fAlphaType); |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 141 | SkTSwap(fFlags, other.fFlags); |
| 142 | SkTSwap(fBytesPerPixel, other.fBytesPerPixel); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 143 | |
| 144 | SkDEBUGCODE(this->validate();) |
| 145 | } |
| 146 | |
| 147 | void SkBitmap::reset() { |
| 148 | this->freePixels(); |
reed@android.com | 4516f47 | 2009-06-29 16:25:36 +0000 | [diff] [blame] | 149 | sk_bzero(this, sizeof(*this)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 150 | } |
| 151 | |
| 152 | int SkBitmap::ComputeBytesPerPixel(SkBitmap::Config config) { |
| 153 | int bpp; |
| 154 | switch (config) { |
| 155 | case kNo_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 156 | bpp = 0; // not applicable |
| 157 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 158 | case kA8_Config: |
| 159 | case kIndex8_Config: |
| 160 | bpp = 1; |
| 161 | break; |
| 162 | case kRGB_565_Config: |
| 163 | case kARGB_4444_Config: |
| 164 | bpp = 2; |
| 165 | break; |
| 166 | case kARGB_8888_Config: |
| 167 | bpp = 4; |
| 168 | break; |
| 169 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 170 | SkDEBUGFAIL("unknown config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 171 | bpp = 0; // error |
| 172 | break; |
| 173 | } |
| 174 | return bpp; |
| 175 | } |
| 176 | |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 177 | size_t SkBitmap::ComputeRowBytes(Config c, int width) { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 178 | if (width < 0) { |
| 179 | return 0; |
| 180 | } |
| 181 | |
reed@google.com | a306d93 | 2013-12-30 14:14:42 +0000 | [diff] [blame^] | 182 | int64_t rowBytes = 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 183 | |
| 184 | switch (c) { |
| 185 | case kNo_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 186 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 187 | case kA8_Config: |
| 188 | case kIndex8_Config: |
reed@google.com | a306d93 | 2013-12-30 14:14:42 +0000 | [diff] [blame^] | 189 | rowBytes = width; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 190 | break; |
| 191 | case kRGB_565_Config: |
| 192 | case kARGB_4444_Config: |
reed@google.com | a306d93 | 2013-12-30 14:14:42 +0000 | [diff] [blame^] | 193 | rowBytes = width << 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 194 | break; |
| 195 | case kARGB_8888_Config: |
reed@google.com | a306d93 | 2013-12-30 14:14:42 +0000 | [diff] [blame^] | 196 | rowBytes = width << 2; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 197 | break; |
| 198 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 199 | SkDEBUGFAIL("unknown config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 200 | break; |
| 201 | } |
reed@google.com | a306d93 | 2013-12-30 14:14:42 +0000 | [diff] [blame^] | 202 | return sk_64_isS32(rowBytes) ? sk_64_asS32(rowBytes) : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 203 | } |
| 204 | |
reed@google.com | a306d93 | 2013-12-30 14:14:42 +0000 | [diff] [blame^] | 205 | int64_t SkBitmap::ComputeSize64(Config config, int width, int height) { |
| 206 | int64_t rowBytes = sk_64_mul(ComputeBytesPerPixel(config), width); |
| 207 | return rowBytes * height; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 208 | } |
| 209 | |
| 210 | size_t SkBitmap::ComputeSize(Config c, int width, int height) { |
reed@google.com | a306d93 | 2013-12-30 14:14:42 +0000 | [diff] [blame^] | 211 | int64_t size = SkBitmap::ComputeSize64(c, width, height); |
| 212 | return sk_64_isS32(size) ? sk_64_asS32(size) : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 213 | } |
| 214 | |
reed@google.com | a306d93 | 2013-12-30 14:14:42 +0000 | [diff] [blame^] | 215 | int64_t SkBitmap::ComputeSafeSize64(Config config, |
| 216 | uint32_t width, |
| 217 | uint32_t height, |
| 218 | size_t rowBytes) { |
| 219 | int64_t safeSize = 0; |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 220 | if (height > 0) { |
reed@google.com | a306d93 | 2013-12-30 14:14:42 +0000 | [diff] [blame^] | 221 | int64_t lastRow = sk_64_mul(ComputeBytesPerPixel(config), width); |
| 222 | safeSize = sk_64_mul(height - 1, rowBytes) + lastRow; |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 223 | } |
reed@google.com | a306d93 | 2013-12-30 14:14:42 +0000 | [diff] [blame^] | 224 | SkASSERT(safeSize >= 0); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 225 | return safeSize; |
| 226 | } |
| 227 | |
| 228 | size_t SkBitmap::ComputeSafeSize(Config config, |
| 229 | uint32_t width, |
| 230 | uint32_t height, |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 231 | size_t rowBytes) { |
reed@google.com | a306d93 | 2013-12-30 14:14:42 +0000 | [diff] [blame^] | 232 | int64_t safeSize = ComputeSafeSize64(config, width, height, rowBytes); |
| 233 | int32_t safeSize32 = (int32_t)safeSize; |
| 234 | |
| 235 | if (safeSize32 != safeSize) { |
| 236 | safeSize32 = 0; |
| 237 | } |
| 238 | return safeSize32; |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 239 | } |
| 240 | |
reed@google.com | 86b2e43 | 2012-03-15 21:17:03 +0000 | [diff] [blame] | 241 | void SkBitmap::getBounds(SkRect* bounds) const { |
| 242 | SkASSERT(bounds); |
| 243 | bounds->set(0, 0, |
| 244 | SkIntToScalar(fWidth), SkIntToScalar(fHeight)); |
| 245 | } |
| 246 | |
reed@google.com | 80e1459 | 2012-03-16 14:58:07 +0000 | [diff] [blame] | 247 | void SkBitmap::getBounds(SkIRect* bounds) const { |
| 248 | SkASSERT(bounds); |
| 249 | bounds->set(0, 0, fWidth, fHeight); |
| 250 | } |
| 251 | |
reed@google.com | 86b2e43 | 2012-03-15 21:17:03 +0000 | [diff] [blame] | 252 | /////////////////////////////////////////////////////////////////////////////// |
| 253 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 254 | static bool validate_alphaType(SkBitmap::Config config, SkAlphaType alphaType, |
commit-bot@chromium.org | c0b7e10 | 2013-10-23 17:06:21 +0000 | [diff] [blame] | 255 | SkAlphaType* canonical = NULL) { |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 256 | switch (config) { |
| 257 | case SkBitmap::kNo_Config: |
| 258 | alphaType = kIgnore_SkAlphaType; |
| 259 | break; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 260 | case SkBitmap::kA8_Config: |
| 261 | if (kUnpremul_SkAlphaType == alphaType) { |
| 262 | alphaType = kPremul_SkAlphaType; |
| 263 | } |
| 264 | // fall-through |
| 265 | case SkBitmap::kIndex8_Config: |
| 266 | case SkBitmap::kARGB_4444_Config: |
| 267 | case SkBitmap::kARGB_8888_Config: |
| 268 | if (kIgnore_SkAlphaType == alphaType) { |
| 269 | return false; |
| 270 | } |
| 271 | break; |
| 272 | case SkBitmap::kRGB_565_Config: |
| 273 | alphaType = kOpaque_SkAlphaType; |
| 274 | break; |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 275 | default: |
| 276 | return false; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 277 | } |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 278 | if (canonical) { |
| 279 | *canonical = alphaType; |
| 280 | } |
| 281 | return true; |
| 282 | } |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 283 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 284 | bool SkBitmap::setConfig(Config config, int width, int height, size_t rowBytes, |
| 285 | SkAlphaType alphaType) { |
| 286 | if ((width | height) < 0) { |
reed@google.com | 9cd697c | 2013-10-21 14:12:13 +0000 | [diff] [blame] | 287 | goto BAD_CONFIG; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 288 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 289 | if (rowBytes == 0) { |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 290 | rowBytes = SkBitmap::ComputeRowBytes(config, width); |
halcanary@google.com | 4428734 | 2013-12-13 18:29:51 +0000 | [diff] [blame] | 291 | if (0 == rowBytes && kNo_Config != config && width > 0) { |
reed@google.com | 9cd697c | 2013-10-21 14:12:13 +0000 | [diff] [blame] | 292 | goto BAD_CONFIG; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 293 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 294 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 295 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 296 | if (!validate_alphaType(config, alphaType, &alphaType)) { |
reed@google.com | 9cd697c | 2013-10-21 14:12:13 +0000 | [diff] [blame] | 297 | goto BAD_CONFIG; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 298 | } |
| 299 | |
| 300 | this->freePixels(); |
| 301 | |
| 302 | fConfig = SkToU8(config); |
| 303 | fAlphaType = SkToU8(alphaType); |
reed@android.com | f459a49 | 2009-03-27 12:33:50 +0000 | [diff] [blame] | 304 | fWidth = width; |
| 305 | fHeight = height; |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 306 | fRowBytes = SkToU32(rowBytes); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 307 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 308 | fBytesPerPixel = (uint8_t)ComputeBytesPerPixel(config); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 309 | |
| 310 | SkDEBUGCODE(this->validate();) |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 311 | return true; |
agl@chromium.org | 6b8cb25 | 2009-06-01 23:52:37 +0000 | [diff] [blame] | 312 | |
reed@android.com | 9e0c2fc | 2009-06-02 18:54:28 +0000 | [diff] [blame] | 313 | // if we got here, we had an error, so we reset the bitmap to empty |
reed@google.com | 9cd697c | 2013-10-21 14:12:13 +0000 | [diff] [blame] | 314 | BAD_CONFIG: |
agl@chromium.org | 6b8cb25 | 2009-06-01 23:52:37 +0000 | [diff] [blame] | 315 | this->reset(); |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 316 | return false; |
| 317 | } |
| 318 | |
commit-bot@chromium.org | 6e3e422 | 2013-11-06 10:08:30 +0000 | [diff] [blame] | 319 | bool SkBitmap::setConfig(const SkImageInfo& info, size_t rowBytes) { |
| 320 | return this->setConfig(SkImageInfoToBitmapConfig(info), info.fWidth, |
| 321 | info.fHeight, rowBytes, info.fAlphaType); |
| 322 | } |
| 323 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 324 | bool SkBitmap::setAlphaType(SkAlphaType alphaType) { |
| 325 | if (!validate_alphaType(this->config(), alphaType, &alphaType)) { |
| 326 | return false; |
| 327 | } |
| 328 | fAlphaType = SkToU8(alphaType); |
| 329 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | void SkBitmap::updatePixelsFromRef() const { |
| 333 | if (NULL != fPixelRef) { |
| 334 | if (fPixelLockCount > 0) { |
reed@google.com | ff0da4f | 2012-05-17 13:14:52 +0000 | [diff] [blame] | 335 | SkASSERT(fPixelRef->isLocked()); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 336 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 337 | void* p = fPixelRef->pixels(); |
| 338 | if (NULL != p) { |
| 339 | p = (char*)p + fPixelRefOffset; |
| 340 | } |
| 341 | fPixels = p; |
| 342 | SkRefCnt_SafeAssign(fColorTable, fPixelRef->colorTable()); |
| 343 | } else { |
| 344 | SkASSERT(0 == fPixelLockCount); |
| 345 | fPixels = NULL; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 346 | if (fColorTable) { |
| 347 | fColorTable->unref(); |
| 348 | fColorTable = NULL; |
| 349 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 350 | } |
| 351 | } |
| 352 | } |
| 353 | |
reed@google.com | 9230ea2 | 2013-12-09 22:01:03 +0000 | [diff] [blame] | 354 | static bool config_to_colorType(SkBitmap::Config config, SkColorType* ctOut) { |
| 355 | SkColorType ct; |
| 356 | switch (config) { |
| 357 | case SkBitmap::kA8_Config: |
| 358 | ct = kAlpha_8_SkColorType; |
| 359 | break; |
| 360 | case SkBitmap::kIndex8_Config: |
| 361 | ct = kIndex_8_SkColorType; |
| 362 | break; |
| 363 | case SkBitmap::kRGB_565_Config: |
| 364 | ct = kRGB_565_SkColorType; |
| 365 | break; |
| 366 | case SkBitmap::kARGB_4444_Config: |
| 367 | ct = kARGB_4444_SkColorType; |
| 368 | break; |
| 369 | case SkBitmap::kARGB_8888_Config: |
| 370 | ct = kPMColor_SkColorType; |
| 371 | break; |
| 372 | case SkBitmap::kNo_Config: |
| 373 | default: |
| 374 | return false; |
| 375 | } |
| 376 | if (ctOut) { |
| 377 | *ctOut = ct; |
| 378 | } |
| 379 | return true; |
| 380 | } |
| 381 | |
| 382 | bool SkBitmap::asImageInfo(SkImageInfo* info) const { |
| 383 | SkColorType ct; |
| 384 | if (!config_to_colorType(this->config(), &ct)) { |
| 385 | return false; |
| 386 | } |
| 387 | if (info) { |
| 388 | info->fWidth = fWidth; |
| 389 | info->fHeight = fHeight; |
| 390 | info->fAlphaType = this->alphaType(); |
| 391 | info->fColorType = ct; |
| 392 | } |
| 393 | return true; |
| 394 | } |
| 395 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 396 | SkPixelRef* SkBitmap::setPixelRef(SkPixelRef* pr, size_t offset) { |
| 397 | // do this first, we that we never have a non-zero offset with a null ref |
| 398 | if (NULL == pr) { |
| 399 | offset = 0; |
| 400 | } |
| 401 | |
| 402 | if (fPixelRef != pr || fPixelRefOffset != offset) { |
| 403 | if (fPixelRef != pr) { |
| 404 | this->freePixels(); |
| 405 | SkASSERT(NULL == fPixelRef); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 406 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 407 | SkSafeRef(pr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 408 | fPixelRef = pr; |
| 409 | } |
| 410 | fPixelRefOffset = offset; |
| 411 | this->updatePixelsFromRef(); |
| 412 | } |
| 413 | |
| 414 | SkDEBUGCODE(this->validate();) |
| 415 | return pr; |
| 416 | } |
| 417 | |
| 418 | void SkBitmap::lockPixels() const { |
djsollen@google.com | 7c6d264 | 2013-08-06 12:19:38 +0000 | [diff] [blame] | 419 | if (NULL != fPixelRef && 0 == sk_atomic_inc(&fPixelLockCount)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 420 | fPixelRef->lockPixels(); |
| 421 | this->updatePixelsFromRef(); |
| 422 | } |
| 423 | SkDEBUGCODE(this->validate();) |
| 424 | } |
| 425 | |
| 426 | void SkBitmap::unlockPixels() const { |
| 427 | SkASSERT(NULL == fPixelRef || fPixelLockCount > 0); |
| 428 | |
djsollen@google.com | 7c6d264 | 2013-08-06 12:19:38 +0000 | [diff] [blame] | 429 | if (NULL != fPixelRef && 1 == sk_atomic_dec(&fPixelLockCount)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 430 | fPixelRef->unlockPixels(); |
| 431 | this->updatePixelsFromRef(); |
| 432 | } |
| 433 | SkDEBUGCODE(this->validate();) |
| 434 | } |
| 435 | |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 436 | bool SkBitmap::lockPixelsAreWritable() const { |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 437 | return (fPixelRef) ? fPixelRef->lockPixelsAreWritable() : false; |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 438 | } |
| 439 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 440 | void SkBitmap::setPixels(void* p, SkColorTable* ctable) { |
reed@google.com | 8e1034e | 2012-07-30 13:16:35 +0000 | [diff] [blame] | 441 | if (NULL == p) { |
| 442 | this->setPixelRef(NULL, 0); |
| 443 | return; |
| 444 | } |
| 445 | |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 446 | SkImageInfo info; |
| 447 | if (!this->asImageInfo(&info)) { |
| 448 | this->setPixelRef(NULL, 0); |
| 449 | return; |
| 450 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 451 | |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 452 | SkPixelRef* pr = SkMallocPixelRef::NewDirect(info, p, fRowBytes, ctable); |
| 453 | if (NULL == pr) { |
| 454 | this->setPixelRef(NULL, 0); |
| 455 | return; |
| 456 | } |
| 457 | |
| 458 | this->setPixelRef(pr)->unref(); |
| 459 | |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 460 | // since we're already allocated, we lockPixels right away |
| 461 | this->lockPixels(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 462 | SkDEBUGCODE(this->validate();) |
| 463 | } |
| 464 | |
| 465 | bool SkBitmap::allocPixels(Allocator* allocator, SkColorTable* ctable) { |
| 466 | HeapAllocator stdalloc; |
| 467 | |
| 468 | if (NULL == allocator) { |
| 469 | allocator = &stdalloc; |
| 470 | } |
| 471 | return allocator->allocPixelRef(this, ctable); |
| 472 | } |
| 473 | |
| 474 | void SkBitmap::freePixels() { |
| 475 | // if we're gonna free the pixels, we certainly need to free the mipmap |
| 476 | this->freeMipMap(); |
| 477 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 478 | if (fColorTable) { |
| 479 | fColorTable->unref(); |
| 480 | fColorTable = NULL; |
| 481 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 482 | |
| 483 | if (NULL != fPixelRef) { |
| 484 | if (fPixelLockCount > 0) { |
| 485 | fPixelRef->unlockPixels(); |
| 486 | } |
| 487 | fPixelRef->unref(); |
| 488 | fPixelRef = NULL; |
| 489 | fPixelRefOffset = 0; |
| 490 | } |
| 491 | fPixelLockCount = 0; |
| 492 | fPixels = NULL; |
| 493 | } |
| 494 | |
| 495 | void SkBitmap::freeMipMap() { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 496 | if (fMipMap) { |
| 497 | fMipMap->unref(); |
| 498 | fMipMap = NULL; |
| 499 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 500 | } |
| 501 | |
| 502 | uint32_t SkBitmap::getGenerationID() const { |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 503 | return (fPixelRef) ? fPixelRef->getGenerationID() : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 504 | } |
| 505 | |
| 506 | void SkBitmap::notifyPixelsChanged() const { |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 507 | SkASSERT(!this->isImmutable()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 508 | if (fPixelRef) { |
| 509 | fPixelRef->notifyPixelsChanged(); |
| 510 | } |
| 511 | } |
| 512 | |
commit-bot@chromium.org | b8d00db | 2013-06-26 19:18:23 +0000 | [diff] [blame] | 513 | GrTexture* SkBitmap::getTexture() const { |
reed@android.com | ce4e53a | 2010-09-09 16:01:26 +0000 | [diff] [blame] | 514 | return fPixelRef ? fPixelRef->getTexture() : NULL; |
| 515 | } |
| 516 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 517 | /////////////////////////////////////////////////////////////////////////////// |
| 518 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 519 | /** We explicitly use the same allocator for our pixels that SkMask does, |
| 520 | so that we can freely assign memory allocated by one class to the other. |
| 521 | */ |
| 522 | bool SkBitmap::HeapAllocator::allocPixelRef(SkBitmap* dst, |
| 523 | SkColorTable* ctable) { |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 524 | SkImageInfo info; |
| 525 | if (!dst->asImageInfo(&info)) { |
| 526 | // SkDebugf("unsupported config for info %d\n", dst->config()); |
| 527 | return false; |
| 528 | } |
skia.committer@gmail.com | 96f5fa0 | 2013-12-16 07:01:40 +0000 | [diff] [blame] | 529 | |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 530 | SkPixelRef* pr = SkMallocPixelRef::NewAllocate(info, dst->rowBytes(), |
| 531 | ctable); |
| 532 | if (NULL == pr) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 533 | return false; |
| 534 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 535 | |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 536 | dst->setPixelRef(pr, 0)->unref(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 537 | // since we're already allocated, we lockPixels right away |
| 538 | dst->lockPixels(); |
| 539 | return true; |
| 540 | } |
| 541 | |
| 542 | /////////////////////////////////////////////////////////////////////////////// |
| 543 | |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 544 | size_t SkBitmap::getSafeSize() const { |
| 545 | // This is intended to be a size_t version of ComputeSafeSize64(), just |
| 546 | // faster. The computation is meant to be identical. |
| 547 | return (fHeight ? ((fHeight - 1) * fRowBytes) + |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 548 | ComputeRowBytes(this->config(), fWidth): 0); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 549 | } |
| 550 | |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 551 | bool SkBitmap::copyPixelsTo(void* const dst, size_t dstSize, |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 552 | size_t dstRowBytes, bool preserveDstPad) const { |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 553 | |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 554 | if (0 == dstRowBytes) { |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 555 | dstRowBytes = fRowBytes; |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 556 | } |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 557 | |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 558 | if (dstRowBytes < ComputeRowBytes(this->config(), fWidth) || |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 559 | dst == NULL || (getPixels() == NULL && pixelRef() == NULL)) |
| 560 | return false; |
| 561 | |
bsalomon@google.com | c698097 | 2011-11-02 19:57:21 +0000 | [diff] [blame] | 562 | if (!preserveDstPad && static_cast<uint32_t>(dstRowBytes) == fRowBytes) { |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 563 | size_t safeSize = this->getSafeSize(); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 564 | if (safeSize > dstSize || safeSize == 0) |
| 565 | return false; |
| 566 | else { |
| 567 | SkAutoLockPixels lock(*this); |
| 568 | // This implementation will write bytes beyond the end of each row, |
| 569 | // excluding the last row, if the bitmap's stride is greater than |
| 570 | // strictly required by the current config. |
| 571 | memcpy(dst, getPixels(), safeSize); |
| 572 | |
| 573 | return true; |
| 574 | } |
| 575 | } else { |
| 576 | // If destination has different stride than us, then copy line by line. |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 577 | if (ComputeSafeSize(this->config(), fWidth, fHeight, dstRowBytes) > |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 578 | dstSize) |
| 579 | return false; |
| 580 | else { |
| 581 | // Just copy what we need on each line. |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 582 | size_t rowBytes = ComputeRowBytes(this->config(), fWidth); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 583 | SkAutoLockPixels lock(*this); |
| 584 | const uint8_t* srcP = reinterpret_cast<const uint8_t*>(getPixels()); |
| 585 | uint8_t* dstP = reinterpret_cast<uint8_t*>(dst); |
| 586 | for (uint32_t row = 0; row < fHeight; |
| 587 | row++, srcP += fRowBytes, dstP += dstRowBytes) { |
| 588 | memcpy(dstP, srcP, rowBytes); |
| 589 | } |
| 590 | |
| 591 | return true; |
| 592 | } |
| 593 | } |
| 594 | } |
| 595 | |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 596 | /////////////////////////////////////////////////////////////////////////////// |
| 597 | |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 598 | bool SkBitmap::isImmutable() const { |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 599 | return fPixelRef ? fPixelRef->isImmutable() : |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 600 | fFlags & kImageIsImmutable_Flag; |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 601 | } |
| 602 | |
| 603 | void SkBitmap::setImmutable() { |
| 604 | if (fPixelRef) { |
| 605 | fPixelRef->setImmutable(); |
| 606 | } else { |
| 607 | fFlags |= kImageIsImmutable_Flag; |
| 608 | } |
| 609 | } |
| 610 | |
junov@google.com | 4ee7ae5 | 2011-06-30 17:30:49 +0000 | [diff] [blame] | 611 | bool SkBitmap::isVolatile() const { |
| 612 | return (fFlags & kImageIsVolatile_Flag) != 0; |
| 613 | } |
| 614 | |
| 615 | void SkBitmap::setIsVolatile(bool isVolatile) { |
| 616 | if (isVolatile) { |
| 617 | fFlags |= kImageIsVolatile_Flag; |
| 618 | } else { |
| 619 | fFlags &= ~kImageIsVolatile_Flag; |
| 620 | } |
| 621 | } |
| 622 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 623 | void* SkBitmap::getAddr(int x, int y) const { |
| 624 | SkASSERT((unsigned)x < (unsigned)this->width()); |
| 625 | SkASSERT((unsigned)y < (unsigned)this->height()); |
| 626 | |
| 627 | char* base = (char*)this->getPixels(); |
| 628 | if (base) { |
| 629 | base += y * this->rowBytes(); |
| 630 | switch (this->config()) { |
| 631 | case SkBitmap::kARGB_8888_Config: |
| 632 | base += x << 2; |
| 633 | break; |
| 634 | case SkBitmap::kARGB_4444_Config: |
| 635 | case SkBitmap::kRGB_565_Config: |
| 636 | base += x << 1; |
| 637 | break; |
| 638 | case SkBitmap::kA8_Config: |
| 639 | case SkBitmap::kIndex8_Config: |
| 640 | base += x; |
| 641 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 642 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 643 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 644 | SkDEBUGFAIL("Can't return addr for config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 645 | base = NULL; |
| 646 | break; |
| 647 | } |
| 648 | } |
| 649 | return base; |
| 650 | } |
| 651 | |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 652 | SkColor SkBitmap::getColor(int x, int y) const { |
| 653 | SkASSERT((unsigned)x < (unsigned)this->width()); |
| 654 | SkASSERT((unsigned)y < (unsigned)this->height()); |
| 655 | |
| 656 | switch (this->config()) { |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 657 | case SkBitmap::kA8_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 658 | uint8_t* addr = this->getAddr8(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 659 | return SkColorSetA(0, addr[0]); |
| 660 | } |
| 661 | case SkBitmap::kIndex8_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 662 | SkPMColor c = this->getIndex8Color(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 663 | return SkUnPreMultiply::PMColorToColor(c); |
| 664 | } |
| 665 | case SkBitmap::kRGB_565_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 666 | uint16_t* addr = this->getAddr16(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 667 | return SkPixel16ToColor(addr[0]); |
| 668 | } |
| 669 | case SkBitmap::kARGB_4444_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 670 | uint16_t* addr = this->getAddr16(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 671 | SkPMColor c = SkPixel4444ToPixel32(addr[0]); |
| 672 | return SkUnPreMultiply::PMColorToColor(c); |
| 673 | } |
| 674 | case SkBitmap::kARGB_8888_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 675 | uint32_t* addr = this->getAddr32(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 676 | return SkUnPreMultiply::PMColorToColor(addr[0]); |
| 677 | } |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 678 | case kNo_Config: |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 679 | default: |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 680 | SkASSERT(false); |
| 681 | return 0; |
| 682 | } |
| 683 | SkASSERT(false); // Not reached. |
| 684 | return 0; |
| 685 | } |
| 686 | |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 687 | bool SkBitmap::ComputeIsOpaque(const SkBitmap& bm) { |
| 688 | SkAutoLockPixels alp(bm); |
| 689 | if (!bm.getPixels()) { |
| 690 | return false; |
| 691 | } |
| 692 | |
| 693 | const int height = bm.height(); |
| 694 | const int width = bm.width(); |
| 695 | |
| 696 | switch (bm.config()) { |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 697 | case SkBitmap::kA8_Config: { |
| 698 | unsigned a = 0xFF; |
| 699 | for (int y = 0; y < height; ++y) { |
| 700 | const uint8_t* row = bm.getAddr8(0, y); |
| 701 | for (int x = 0; x < width; ++x) { |
| 702 | a &= row[x]; |
| 703 | } |
| 704 | if (0xFF != a) { |
| 705 | return false; |
| 706 | } |
| 707 | } |
| 708 | return true; |
| 709 | } break; |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 710 | case SkBitmap::kIndex8_Config: { |
| 711 | SkAutoLockColors alc(bm); |
| 712 | const SkPMColor* table = alc.colors(); |
| 713 | if (!table) { |
| 714 | return false; |
| 715 | } |
reed@google.com | 140d728 | 2013-01-07 20:25:04 +0000 | [diff] [blame] | 716 | SkPMColor c = (SkPMColor)~0; |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 717 | for (int i = bm.getColorTable()->count() - 1; i >= 0; --i) { |
| 718 | c &= table[i]; |
| 719 | } |
| 720 | return 0xFF == SkGetPackedA32(c); |
| 721 | } break; |
| 722 | case SkBitmap::kRGB_565_Config: |
| 723 | return true; |
| 724 | break; |
| 725 | case SkBitmap::kARGB_4444_Config: { |
| 726 | unsigned c = 0xFFFF; |
| 727 | for (int y = 0; y < height; ++y) { |
| 728 | const SkPMColor16* row = bm.getAddr16(0, y); |
| 729 | for (int x = 0; x < width; ++x) { |
| 730 | c &= row[x]; |
| 731 | } |
| 732 | if (0xF != SkGetPackedA4444(c)) { |
| 733 | return false; |
| 734 | } |
| 735 | } |
| 736 | return true; |
| 737 | } break; |
| 738 | case SkBitmap::kARGB_8888_Config: { |
reed@google.com | 140d728 | 2013-01-07 20:25:04 +0000 | [diff] [blame] | 739 | SkPMColor c = (SkPMColor)~0; |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 740 | for (int y = 0; y < height; ++y) { |
| 741 | const SkPMColor* row = bm.getAddr32(0, y); |
| 742 | for (int x = 0; x < width; ++x) { |
| 743 | c &= row[x]; |
| 744 | } |
| 745 | if (0xFF != SkGetPackedA32(c)) { |
| 746 | return false; |
| 747 | } |
| 748 | } |
| 749 | return true; |
| 750 | } |
| 751 | default: |
| 752 | break; |
| 753 | } |
| 754 | return false; |
| 755 | } |
| 756 | |
| 757 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 758 | /////////////////////////////////////////////////////////////////////////////// |
| 759 | /////////////////////////////////////////////////////////////////////////////// |
| 760 | |
reed@google.com | 45f746f | 2013-06-21 19:51:31 +0000 | [diff] [blame] | 761 | static uint16_t pack_8888_to_4444(unsigned a, unsigned r, unsigned g, unsigned b) { |
| 762 | unsigned pixel = (SkA32To4444(a) << SK_A4444_SHIFT) | |
| 763 | (SkR32To4444(r) << SK_R4444_SHIFT) | |
| 764 | (SkG32To4444(g) << SK_G4444_SHIFT) | |
| 765 | (SkB32To4444(b) << SK_B4444_SHIFT); |
| 766 | return SkToU16(pixel); |
| 767 | } |
| 768 | |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 769 | void SkBitmap::internalErase(const SkIRect& area, |
| 770 | U8CPU a, U8CPU r, U8CPU g, U8CPU b) const { |
| 771 | #ifdef SK_DEBUG |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 772 | SkDEBUGCODE(this->validate();) |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 773 | SkASSERT(!area.isEmpty()); |
| 774 | { |
reed@google.com | 92833f9 | 2013-06-28 19:47:43 +0000 | [diff] [blame] | 775 | SkIRect total = { 0, 0, this->width(), this->height() }; |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 776 | SkASSERT(total.contains(area)); |
| 777 | } |
| 778 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 779 | |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 780 | if (kNo_Config == fConfig || kIndex8_Config == fConfig) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 781 | return; |
| 782 | } |
| 783 | |
| 784 | SkAutoLockPixels alp(*this); |
| 785 | // perform this check after the lock call |
| 786 | if (!this->readyToDraw()) { |
| 787 | return; |
| 788 | } |
| 789 | |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 790 | int height = area.height(); |
| 791 | const int width = area.width(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 792 | const int rowBytes = fRowBytes; |
| 793 | |
| 794 | // make rgb premultiplied |
| 795 | if (255 != a) { |
| 796 | r = SkAlphaMul(r, a); |
| 797 | g = SkAlphaMul(g, a); |
| 798 | b = SkAlphaMul(b, a); |
| 799 | } |
| 800 | |
| 801 | switch (fConfig) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 802 | case kA8_Config: { |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 803 | uint8_t* p = this->getAddr8(area.fLeft, area.fTop); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 804 | while (--height >= 0) { |
| 805 | memset(p, a, width); |
| 806 | p += rowBytes; |
| 807 | } |
| 808 | break; |
| 809 | } |
reed@google.com | 45f746f | 2013-06-21 19:51:31 +0000 | [diff] [blame] | 810 | case kARGB_4444_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 811 | case kRGB_565_Config: { |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 812 | uint16_t* p = this->getAddr16(area.fLeft, area.fTop);; |
reed@google.com | 45f746f | 2013-06-21 19:51:31 +0000 | [diff] [blame] | 813 | uint16_t v; |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 814 | |
reed@google.com | 45f746f | 2013-06-21 19:51:31 +0000 | [diff] [blame] | 815 | if (kARGB_4444_Config == fConfig) { |
| 816 | v = pack_8888_to_4444(a, r, g, b); |
| 817 | } else { |
| 818 | v = SkPackRGB16(r >> (8 - SK_R16_BITS), |
| 819 | g >> (8 - SK_G16_BITS), |
| 820 | b >> (8 - SK_B16_BITS)); |
| 821 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 822 | while (--height >= 0) { |
| 823 | sk_memset16(p, v, width); |
| 824 | p = (uint16_t*)((char*)p + rowBytes); |
| 825 | } |
| 826 | break; |
| 827 | } |
| 828 | case kARGB_8888_Config: { |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 829 | uint32_t* p = this->getAddr32(area.fLeft, area.fTop); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 830 | uint32_t v = SkPackARGB32(a, r, g, b); |
| 831 | |
| 832 | while (--height >= 0) { |
| 833 | sk_memset32(p, v, width); |
| 834 | p = (uint32_t*)((char*)p + rowBytes); |
| 835 | } |
| 836 | break; |
| 837 | } |
| 838 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 839 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 840 | this->notifyPixelsChanged(); |
| 841 | } |
| 842 | |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 843 | void SkBitmap::eraseARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b) const { |
reed@google.com | 92833f9 | 2013-06-28 19:47:43 +0000 | [diff] [blame] | 844 | SkIRect area = { 0, 0, this->width(), this->height() }; |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 845 | if (!area.isEmpty()) { |
| 846 | this->internalErase(area, a, r, g, b); |
| 847 | } |
| 848 | } |
| 849 | |
| 850 | void SkBitmap::eraseArea(const SkIRect& rect, SkColor c) const { |
reed@google.com | 92833f9 | 2013-06-28 19:47:43 +0000 | [diff] [blame] | 851 | SkIRect area = { 0, 0, this->width(), this->height() }; |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 852 | if (area.intersect(rect)) { |
| 853 | this->internalErase(area, SkColorGetA(c), SkColorGetR(c), |
| 854 | SkColorGetG(c), SkColorGetB(c)); |
| 855 | } |
| 856 | } |
| 857 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 858 | ////////////////////////////////////////////////////////////////////////////////////// |
| 859 | ////////////////////////////////////////////////////////////////////////////////////// |
| 860 | |
| 861 | #define SUB_OFFSET_FAILURE ((size_t)-1) |
| 862 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 863 | /** |
| 864 | * Based on the Config and rowBytes() of bm, return the offset into an SkPixelRef of the pixel at |
| 865 | * (x, y). |
| 866 | * Note that the SkPixelRef does not need to be set yet. deepCopyTo takes advantage of this fact. |
| 867 | * Also note that (x, y) may be outside the range of (0 - width(), 0 - height()), so long as it is |
| 868 | * within the bounds of the SkPixelRef being used. |
| 869 | */ |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 870 | static size_t get_sub_offset(const SkBitmap& bm, int x, int y) { |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 871 | switch (bm.config()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 872 | case SkBitmap::kA8_Config: |
| 873 | case SkBitmap:: kIndex8_Config: |
| 874 | // x is fine as is for the calculation |
| 875 | break; |
| 876 | |
| 877 | case SkBitmap::kRGB_565_Config: |
| 878 | case SkBitmap::kARGB_4444_Config: |
| 879 | x <<= 1; |
| 880 | break; |
| 881 | |
| 882 | case SkBitmap::kARGB_8888_Config: |
| 883 | x <<= 2; |
| 884 | break; |
| 885 | |
| 886 | case SkBitmap::kNo_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 887 | default: |
| 888 | return SUB_OFFSET_FAILURE; |
| 889 | } |
| 890 | return y * bm.rowBytes() + x; |
| 891 | } |
| 892 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 893 | /** |
| 894 | * Using the pixelRefOffset(), rowBytes(), and Config of bm, determine the (x, y) coordinate of the |
| 895 | * upper left corner of bm relative to its SkPixelRef. |
| 896 | * x and y must be non-NULL. |
| 897 | */ |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 898 | bool get_upper_left_from_offset(SkBitmap::Config config, size_t offset, size_t rowBytes, |
scroggo@google.com | 61d6c9e | 2013-05-21 20:38:40 +0000 | [diff] [blame] | 899 | int32_t* x, int32_t* y); |
| 900 | bool get_upper_left_from_offset(SkBitmap::Config config, size_t offset, size_t rowBytes, |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 901 | int32_t* x, int32_t* y) { |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 902 | SkASSERT(x != NULL && y != NULL); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 903 | if (0 == offset) { |
| 904 | *x = *y = 0; |
| 905 | return true; |
| 906 | } |
| 907 | // Use integer division to find the correct y position. |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 908 | // The remainder will be the x position, after we reverse get_sub_offset. |
commit-bot@chromium.org | 2c86fbb | 2013-09-26 19:22:54 +0000 | [diff] [blame] | 909 | SkTDivMod(offset, rowBytes, y, x); |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 910 | switch (config) { |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 911 | case SkBitmap::kA8_Config: |
| 912 | // Fall through. |
| 913 | case SkBitmap::kIndex8_Config: |
| 914 | // x is unmodified |
| 915 | break; |
| 916 | |
| 917 | case SkBitmap::kRGB_565_Config: |
| 918 | // Fall through. |
| 919 | case SkBitmap::kARGB_4444_Config: |
| 920 | *x >>= 1; |
| 921 | break; |
| 922 | |
| 923 | case SkBitmap::kARGB_8888_Config: |
| 924 | *x >>= 2; |
| 925 | break; |
| 926 | |
| 927 | case SkBitmap::kNo_Config: |
| 928 | // Fall through. |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 929 | default: |
| 930 | return false; |
| 931 | } |
| 932 | return true; |
| 933 | } |
| 934 | |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 935 | static bool get_upper_left_from_offset(const SkBitmap& bm, int32_t* x, int32_t* y) { |
| 936 | return get_upper_left_from_offset(bm.config(), bm.pixelRefOffset(), bm.rowBytes(), x, y); |
| 937 | } |
| 938 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 939 | bool SkBitmap::extractSubset(SkBitmap* result, const SkIRect& subset) const { |
| 940 | SkDEBUGCODE(this->validate();) |
| 941 | |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 942 | if (NULL == result || NULL == fPixelRef) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 943 | return false; // no src pixels |
| 944 | } |
| 945 | |
| 946 | SkIRect srcRect, r; |
| 947 | srcRect.set(0, 0, this->width(), this->height()); |
| 948 | if (!r.intersect(srcRect, subset)) { |
| 949 | return false; // r is empty (i.e. no intersection) |
| 950 | } |
| 951 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 952 | if (fPixelRef->getTexture() != NULL) { |
| 953 | // Do a deep copy |
| 954 | SkPixelRef* pixelRef = fPixelRef->deepCopy(this->config(), &subset); |
| 955 | if (pixelRef != NULL) { |
| 956 | SkBitmap dst; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 957 | dst.setConfig(this->config(), subset.width(), subset.height(), 0, |
| 958 | this->alphaType()); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 959 | dst.setIsVolatile(this->isVolatile()); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 960 | dst.setPixelRef(pixelRef)->unref(); |
| 961 | SkDEBUGCODE(dst.validate()); |
| 962 | result->swap(dst); |
| 963 | return true; |
| 964 | } |
| 965 | } |
| 966 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 967 | // If the upper left of the rectangle was outside the bounds of this SkBitmap, we should have |
| 968 | // exited above. |
| 969 | SkASSERT(static_cast<unsigned>(r.fLeft) < static_cast<unsigned>(this->width())); |
| 970 | SkASSERT(static_cast<unsigned>(r.fTop) < static_cast<unsigned>(this->height())); |
| 971 | |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 972 | size_t offset = get_sub_offset(*this, r.fLeft, r.fTop); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 973 | if (SUB_OFFSET_FAILURE == offset) { |
| 974 | return false; // config not supported |
| 975 | } |
| 976 | |
| 977 | SkBitmap dst; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 978 | dst.setConfig(this->config(), r.width(), r.height(), this->rowBytes(), |
| 979 | this->alphaType()); |
skyostil@google.com | 0eb7576 | 2012-01-16 10:45:53 +0000 | [diff] [blame] | 980 | dst.setIsVolatile(this->isVolatile()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 981 | |
| 982 | if (fPixelRef) { |
| 983 | // share the pixelref with a custom offset |
| 984 | dst.setPixelRef(fPixelRef, fPixelRefOffset + offset); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 985 | } |
| 986 | SkDEBUGCODE(dst.validate();) |
| 987 | |
| 988 | // we know we're good, so commit to result |
| 989 | result->swap(dst); |
| 990 | return true; |
| 991 | } |
| 992 | |
| 993 | /////////////////////////////////////////////////////////////////////////////// |
| 994 | |
| 995 | #include "SkCanvas.h" |
| 996 | #include "SkPaint.h" |
| 997 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 998 | bool SkBitmap::canCopyTo(Config dstConfig) const { |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 999 | if (this->config() == kNo_Config) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1000 | return false; |
| 1001 | } |
| 1002 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1003 | bool sameConfigs = (this->config() == dstConfig); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1004 | switch (dstConfig) { |
| 1005 | case kA8_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1006 | case kRGB_565_Config: |
| 1007 | case kARGB_8888_Config: |
| 1008 | break; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1009 | case kIndex8_Config: |
| 1010 | if (!sameConfigs) { |
| 1011 | return false; |
| 1012 | } |
| 1013 | break; |
scroggo@google.com | 8dc8bc5 | 2013-08-07 19:16:05 +0000 | [diff] [blame] | 1014 | case kARGB_4444_Config: |
| 1015 | return sameConfigs || kARGB_8888_Config == this->config(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1016 | default: |
| 1017 | return false; |
| 1018 | } |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1019 | return true; |
| 1020 | } |
| 1021 | |
| 1022 | bool SkBitmap::copyTo(SkBitmap* dst, Config dstConfig, Allocator* alloc) const { |
| 1023 | if (!this->canCopyTo(dstConfig)) { |
| 1024 | return false; |
| 1025 | } |
| 1026 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1027 | // if we have a texture, first get those pixels |
| 1028 | SkBitmap tmpSrc; |
| 1029 | const SkBitmap* src = this; |
| 1030 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1031 | if (fPixelRef) { |
| 1032 | SkIRect subset; |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 1033 | if (get_upper_left_from_offset(*this, &subset.fLeft, &subset.fTop)) { |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1034 | subset.fRight = subset.fLeft + fWidth; |
| 1035 | subset.fBottom = subset.fTop + fHeight; |
| 1036 | if (fPixelRef->readPixels(&tmpSrc, &subset)) { |
| 1037 | SkASSERT(tmpSrc.width() == this->width()); |
| 1038 | SkASSERT(tmpSrc.height() == this->height()); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1039 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1040 | // did we get lucky and we can just return tmpSrc? |
| 1041 | if (tmpSrc.config() == dstConfig && NULL == alloc) { |
| 1042 | dst->swap(tmpSrc); |
| 1043 | if (dst->pixelRef() && this->config() == dstConfig) { |
commit-bot@chromium.org | 50a3043 | 2013-10-24 17:44:27 +0000 | [diff] [blame] | 1044 | // TODO(scroggo): fix issue 1742 |
| 1045 | dst->pixelRef()->cloneGenID(*fPixelRef); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1046 | } |
| 1047 | return true; |
| 1048 | } |
| 1049 | |
| 1050 | // fall through to the raster case |
| 1051 | src = &tmpSrc; |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1052 | } |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1053 | } |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1054 | } |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1055 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1056 | // we lock this now, since we may need its colortable |
| 1057 | SkAutoLockPixels srclock(*src); |
| 1058 | if (!src->readyToDraw()) { |
| 1059 | return false; |
| 1060 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1061 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1062 | SkBitmap tmpDst; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 1063 | tmpDst.setConfig(dstConfig, src->width(), src->height(), 0, |
| 1064 | src->alphaType()); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1065 | |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1066 | // allocate colortable if srcConfig == kIndex8_Config |
| 1067 | SkColorTable* ctable = (dstConfig == kIndex8_Config) ? |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1068 | new SkColorTable(*src->getColorTable()) : NULL; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1069 | SkAutoUnref au(ctable); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1070 | if (!tmpDst.allocPixels(alloc, ctable)) { |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1071 | return false; |
| 1072 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1073 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1074 | if (!tmpDst.readyToDraw()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1075 | // allocator/lock failed |
| 1076 | return false; |
| 1077 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1078 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1079 | /* do memcpy for the same configs cases, else use drawing |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1080 | */ |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1081 | if (src->config() == dstConfig) { |
| 1082 | if (tmpDst.getSize() == src->getSize()) { |
| 1083 | memcpy(tmpDst.getPixels(), src->getPixels(), src->getSafeSize()); |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1084 | SkPixelRef* pixelRef = tmpDst.pixelRef(); |
commit-bot@chromium.org | 50a3043 | 2013-10-24 17:44:27 +0000 | [diff] [blame] | 1085 | if (NULL != pixelRef && NULL != fPixelRef) { |
| 1086 | // TODO(scroggo): fix issue 1742 |
| 1087 | pixelRef->cloneGenID(*fPixelRef); |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1088 | } |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1089 | } else { |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1090 | const char* srcP = reinterpret_cast<const char*>(src->getPixels()); |
| 1091 | char* dstP = reinterpret_cast<char*>(tmpDst.getPixels()); |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1092 | // 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] | 1093 | size_t bytesToCopy = tmpDst.width() * tmpDst.bytesPerPixel(); |
| 1094 | for (int y = 0; y < tmpDst.height(); y++) { |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1095 | memcpy(dstP, srcP, bytesToCopy); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1096 | srcP += src->rowBytes(); |
| 1097 | dstP += tmpDst.rowBytes(); |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1098 | } |
| 1099 | } |
scroggo@google.com | 8dc8bc5 | 2013-08-07 19:16:05 +0000 | [diff] [blame] | 1100 | } else if (SkBitmap::kARGB_4444_Config == dstConfig |
| 1101 | && SkBitmap::kARGB_8888_Config == src->config()) { |
| 1102 | SkASSERT(src->height() == tmpDst.height()); |
| 1103 | SkASSERT(src->width() == tmpDst.width()); |
| 1104 | for (int y = 0; y < src->height(); ++y) { |
| 1105 | SkPMColor16* SK_RESTRICT dstRow = (SkPMColor16*) tmpDst.getAddr16(0, y); |
| 1106 | SkPMColor* SK_RESTRICT srcRow = (SkPMColor*) src->getAddr32(0, y); |
| 1107 | DITHER_4444_SCAN(y); |
| 1108 | for (int x = 0; x < src->width(); ++x) { |
| 1109 | dstRow[x] = SkDitherARGB32To4444(srcRow[x], |
| 1110 | DITHER_VALUE(x)); |
| 1111 | } |
| 1112 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1113 | } else { |
robertphillips@google.com | 0197b32 | 2013-10-10 15:48:16 +0000 | [diff] [blame] | 1114 | // Always clear the dest in case one of the blitters accesses it |
| 1115 | // TODO: switch the allocation of tmpDst to call sk_calloc_throw |
| 1116 | tmpDst.eraseColor(SK_ColorTRANSPARENT); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1117 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1118 | SkCanvas canvas(tmpDst); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1119 | SkPaint paint; |
| 1120 | |
| 1121 | paint.setDither(true); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1122 | canvas.drawBitmap(*src, 0, 0, &paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1123 | } |
| 1124 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1125 | dst->swap(tmpDst); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1126 | return true; |
| 1127 | } |
| 1128 | |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 1129 | bool SkBitmap::deepCopyTo(SkBitmap* dst, Config dstConfig) const { |
| 1130 | if (!this->canCopyTo(dstConfig)) { |
| 1131 | return false; |
| 1132 | } |
| 1133 | |
| 1134 | // If we have a PixelRef, and it supports deep copy, use it. |
| 1135 | // Currently supported only by texture-backed bitmaps. |
| 1136 | if (fPixelRef) { |
| 1137 | SkPixelRef* pixelRef = fPixelRef->deepCopy(dstConfig); |
| 1138 | if (pixelRef) { |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1139 | uint32_t rowBytes; |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1140 | if (dstConfig == fConfig) { |
commit-bot@chromium.org | 50a3043 | 2013-10-24 17:44:27 +0000 | [diff] [blame] | 1141 | // TODO(scroggo): fix issue 1742 |
| 1142 | pixelRef->cloneGenID(*fPixelRef); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1143 | // Use the same rowBytes as the original. |
| 1144 | rowBytes = fRowBytes; |
| 1145 | } else { |
| 1146 | // With the new config, an appropriate fRowBytes will be computed by setConfig. |
| 1147 | rowBytes = 0; |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1148 | } |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1149 | dst->setConfig(dstConfig, fWidth, fHeight, rowBytes); |
| 1150 | |
| 1151 | size_t pixelRefOffset; |
| 1152 | if (0 == fPixelRefOffset || dstConfig == fConfig) { |
| 1153 | // Use the same offset as the original. |
| 1154 | pixelRefOffset = fPixelRefOffset; |
| 1155 | } else { |
| 1156 | // Find the correct offset in the new config. This needs to be done after calling |
| 1157 | // setConfig so dst's fConfig and fRowBytes have been set properly. |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1158 | int32_t x, y; |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 1159 | if (!get_upper_left_from_offset(*this, &x, &y)) { |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1160 | return false; |
| 1161 | } |
scroggo@google.com | 1b1bcc3 | 2013-05-21 20:31:23 +0000 | [diff] [blame] | 1162 | pixelRefOffset = get_sub_offset(*dst, x, y); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1163 | if (SUB_OFFSET_FAILURE == pixelRefOffset) { |
| 1164 | return false; |
| 1165 | } |
| 1166 | } |
| 1167 | dst->setPixelRef(pixelRef, pixelRefOffset)->unref(); |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 1168 | return true; |
| 1169 | } |
| 1170 | } |
| 1171 | |
| 1172 | if (this->getTexture()) { |
| 1173 | return false; |
| 1174 | } else { |
| 1175 | return this->copyTo(dst, dstConfig, NULL); |
| 1176 | } |
| 1177 | } |
| 1178 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1179 | /////////////////////////////////////////////////////////////////////////////// |
| 1180 | /////////////////////////////////////////////////////////////////////////////// |
| 1181 | |
| 1182 | static void downsampleby2_proc32(SkBitmap* dst, int x, int y, |
| 1183 | const SkBitmap& src) { |
| 1184 | x <<= 1; |
| 1185 | y <<= 1; |
| 1186 | const SkPMColor* p = src.getAddr32(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1187 | const SkPMColor* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1188 | SkPMColor c, ag, rb; |
| 1189 | |
| 1190 | c = *p; ag = (c >> 8) & 0xFF00FF; rb = c & 0xFF00FF; |
| 1191 | if (x < src.width() - 1) { |
| 1192 | p += 1; |
| 1193 | } |
| 1194 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1195 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1196 | p = baseP; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1197 | if (y < src.height() - 1) { |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1198 | p += src.rowBytes() >> 2; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1199 | } |
| 1200 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1201 | if (x < src.width() - 1) { |
| 1202 | p += 1; |
| 1203 | } |
| 1204 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1205 | |
| 1206 | *dst->getAddr32(x >> 1, y >> 1) = |
| 1207 | ((rb >> 2) & 0xFF00FF) | ((ag << 6) & 0xFF00FF00); |
| 1208 | } |
| 1209 | |
| 1210 | static inline uint32_t expand16(U16CPU c) { |
| 1211 | return (c & ~SK_G16_MASK_IN_PLACE) | ((c & SK_G16_MASK_IN_PLACE) << 16); |
| 1212 | } |
| 1213 | |
| 1214 | // returns dirt in the top 16bits, but we don't care, since we only |
| 1215 | // store the low 16bits. |
| 1216 | static inline U16CPU pack16(uint32_t c) { |
| 1217 | return (c & ~SK_G16_MASK_IN_PLACE) | ((c >> 16) & SK_G16_MASK_IN_PLACE); |
| 1218 | } |
| 1219 | |
| 1220 | static void downsampleby2_proc16(SkBitmap* dst, int x, int y, |
| 1221 | const SkBitmap& src) { |
| 1222 | x <<= 1; |
| 1223 | y <<= 1; |
| 1224 | const uint16_t* p = src.getAddr16(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1225 | const uint16_t* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1226 | SkPMColor c; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1227 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1228 | c = expand16(*p); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1229 | if (x < src.width() - 1) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1230 | p += 1; |
| 1231 | } |
| 1232 | c += expand16(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1233 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1234 | p = baseP; |
| 1235 | if (y < src.height() - 1) { |
| 1236 | p += src.rowBytes() >> 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1237 | } |
| 1238 | c += expand16(*p); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1239 | if (x < src.width() - 1) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1240 | p += 1; |
| 1241 | } |
| 1242 | c += expand16(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1243 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1244 | *dst->getAddr16(x >> 1, y >> 1) = (uint16_t)pack16(c >> 2); |
| 1245 | } |
| 1246 | |
| 1247 | static uint32_t expand4444(U16CPU c) { |
| 1248 | return (c & 0xF0F) | ((c & ~0xF0F) << 12); |
| 1249 | } |
| 1250 | |
| 1251 | static U16CPU collaps4444(uint32_t c) { |
| 1252 | return (c & 0xF0F) | ((c >> 12) & ~0xF0F); |
| 1253 | } |
| 1254 | |
| 1255 | static void downsampleby2_proc4444(SkBitmap* dst, int x, int y, |
| 1256 | const SkBitmap& src) { |
| 1257 | x <<= 1; |
| 1258 | y <<= 1; |
| 1259 | const uint16_t* p = src.getAddr16(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1260 | const uint16_t* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1261 | uint32_t c; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1262 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1263 | c = expand4444(*p); |
| 1264 | if (x < src.width() - 1) { |
| 1265 | p += 1; |
| 1266 | } |
| 1267 | c += expand4444(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1268 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1269 | p = baseP; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1270 | if (y < src.height() - 1) { |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1271 | p += src.rowBytes() >> 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1272 | } |
| 1273 | c += expand4444(*p); |
| 1274 | if (x < src.width() - 1) { |
| 1275 | p += 1; |
| 1276 | } |
| 1277 | c += expand4444(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1278 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1279 | *dst->getAddr16(x >> 1, y >> 1) = (uint16_t)collaps4444(c >> 2); |
| 1280 | } |
| 1281 | |
| 1282 | void SkBitmap::buildMipMap(bool forceRebuild) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1283 | if (forceRebuild) |
| 1284 | this->freeMipMap(); |
| 1285 | else if (fMipMap) |
| 1286 | return; // we're already built |
| 1287 | |
| 1288 | SkASSERT(NULL == fMipMap); |
| 1289 | |
| 1290 | void (*proc)(SkBitmap* dst, int x, int y, const SkBitmap& src); |
| 1291 | |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 1292 | const SkBitmap::Config config = this->config(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1293 | |
| 1294 | switch (config) { |
| 1295 | case kARGB_8888_Config: |
| 1296 | proc = downsampleby2_proc32; |
| 1297 | break; |
| 1298 | case kRGB_565_Config: |
| 1299 | proc = downsampleby2_proc16; |
| 1300 | break; |
| 1301 | case kARGB_4444_Config: |
| 1302 | proc = downsampleby2_proc4444; |
| 1303 | break; |
| 1304 | case kIndex8_Config: |
| 1305 | case kA8_Config: |
| 1306 | default: |
| 1307 | return; // don't build mipmaps for these configs |
| 1308 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 1309 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1310 | SkAutoLockPixels alp(*this); |
| 1311 | if (!this->readyToDraw()) { |
| 1312 | return; |
| 1313 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1314 | |
| 1315 | // whip through our loop to compute the exact size needed |
| 1316 | size_t size = 0; |
| 1317 | int maxLevels = 0; |
| 1318 | { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1319 | int width = this->width(); |
| 1320 | int height = this->height(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1321 | for (;;) { |
| 1322 | width >>= 1; |
| 1323 | height >>= 1; |
| 1324 | if (0 == width || 0 == height) { |
| 1325 | break; |
| 1326 | } |
| 1327 | size += ComputeRowBytes(config, width) * height; |
| 1328 | maxLevels += 1; |
| 1329 | } |
| 1330 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 1331 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1332 | // nothing to build |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1333 | if (0 == maxLevels) { |
| 1334 | return; |
| 1335 | } |
| 1336 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1337 | SkBitmap srcBM(*this); |
| 1338 | srcBM.lockPixels(); |
| 1339 | if (!srcBM.readyToDraw()) { |
| 1340 | return; |
| 1341 | } |
| 1342 | |
| 1343 | MipMap* mm = MipMap::Alloc(maxLevels, size); |
| 1344 | if (NULL == mm) { |
| 1345 | return; |
| 1346 | } |
| 1347 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1348 | MipLevel* level = mm->levels(); |
| 1349 | uint8_t* addr = (uint8_t*)mm->pixels(); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1350 | int width = this->width(); |
| 1351 | int height = this->height(); |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1352 | uint32_t rowBytes; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1353 | SkBitmap dstBM; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1354 | |
| 1355 | for (int i = 0; i < maxLevels; i++) { |
| 1356 | width >>= 1; |
| 1357 | height >>= 1; |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1358 | rowBytes = SkToU32(ComputeRowBytes(config, width)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1359 | |
| 1360 | level[i].fPixels = addr; |
reed@android.com | f459a49 | 2009-03-27 12:33:50 +0000 | [diff] [blame] | 1361 | level[i].fWidth = width; |
| 1362 | level[i].fHeight = height; |
reed@android.com | 49f0ff2 | 2009-03-19 21:52:42 +0000 | [diff] [blame] | 1363 | level[i].fRowBytes = rowBytes; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1364 | |
| 1365 | dstBM.setConfig(config, width, height, rowBytes); |
| 1366 | dstBM.setPixels(addr); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1367 | |
bungeman@google.com | 7cf0e9e | 2012-07-25 16:09:10 +0000 | [diff] [blame] | 1368 | srcBM.lockPixels(); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1369 | for (int y = 0; y < height; y++) { |
| 1370 | for (int x = 0; x < width; x++) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1371 | proc(&dstBM, x, y, srcBM); |
| 1372 | } |
| 1373 | } |
bungeman@google.com | 7cf0e9e | 2012-07-25 16:09:10 +0000 | [diff] [blame] | 1374 | srcBM.unlockPixels(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1375 | |
| 1376 | srcBM = dstBM; |
| 1377 | addr += height * rowBytes; |
| 1378 | } |
| 1379 | SkASSERT(addr == (uint8_t*)mm->pixels() + size); |
| 1380 | fMipMap = mm; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1381 | } |
| 1382 | |
| 1383 | bool SkBitmap::hasMipMap() const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1384 | return fMipMap != NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1385 | } |
| 1386 | |
| 1387 | int SkBitmap::extractMipLevel(SkBitmap* dst, SkFixed sx, SkFixed sy) { |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 1388 | if (NULL == fMipMap) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1389 | return 0; |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 1390 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1391 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1392 | int level = ComputeMipLevel(sx, sy) >> 16; |
| 1393 | SkASSERT(level >= 0); |
| 1394 | if (level <= 0) { |
| 1395 | return 0; |
| 1396 | } |
| 1397 | |
| 1398 | if (level >= fMipMap->fLevelCount) { |
| 1399 | level = fMipMap->fLevelCount - 1; |
| 1400 | } |
| 1401 | if (dst) { |
| 1402 | const MipLevel& mip = fMipMap->levels()[level - 1]; |
| 1403 | dst->setConfig((SkBitmap::Config)this->config(), |
| 1404 | mip.fWidth, mip.fHeight, mip.fRowBytes); |
| 1405 | dst->setPixels(mip.fPixels); |
| 1406 | } |
| 1407 | return level; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1408 | } |
| 1409 | |
| 1410 | SkFixed SkBitmap::ComputeMipLevel(SkFixed sx, SkFixed sy) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1411 | sx = SkAbs32(sx); |
| 1412 | sy = SkAbs32(sy); |
| 1413 | if (sx < sy) { |
| 1414 | sx = sy; |
| 1415 | } |
| 1416 | if (sx < SK_Fixed1) { |
| 1417 | return 0; |
| 1418 | } |
| 1419 | int clz = SkCLZ(sx); |
| 1420 | SkASSERT(clz >= 1 && clz <= 15); |
| 1421 | return SkIntToFixed(15 - clz) + ((unsigned)(sx << (clz + 1)) >> 16); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1422 | } |
| 1423 | |
| 1424 | /////////////////////////////////////////////////////////////////////////////// |
| 1425 | |
tomhudson@google.com | a87cd2a | 2011-06-15 16:50:27 +0000 | [diff] [blame] | 1426 | static bool GetBitmapAlpha(const SkBitmap& src, uint8_t* SK_RESTRICT alpha, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1427 | int alphaRowBytes) { |
| 1428 | SkASSERT(alpha != NULL); |
| 1429 | SkASSERT(alphaRowBytes >= src.width()); |
| 1430 | |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 1431 | SkBitmap::Config config = src.config(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1432 | int w = src.width(); |
| 1433 | int h = src.height(); |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1434 | size_t rb = src.rowBytes(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1435 | |
reed@android.com | 1cdcb51 | 2009-08-24 19:11:00 +0000 | [diff] [blame] | 1436 | SkAutoLockPixels alp(src); |
| 1437 | if (!src.readyToDraw()) { |
| 1438 | // zero out the alpha buffer and return |
| 1439 | while (--h >= 0) { |
| 1440 | memset(alpha, 0, w); |
| 1441 | alpha += alphaRowBytes; |
| 1442 | } |
| 1443 | return false; |
| 1444 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 1445 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1446 | if (SkBitmap::kA8_Config == config && !src.isOpaque()) { |
| 1447 | const uint8_t* s = src.getAddr8(0, 0); |
| 1448 | while (--h >= 0) { |
| 1449 | memcpy(alpha, s, w); |
| 1450 | s += rb; |
| 1451 | alpha += alphaRowBytes; |
| 1452 | } |
| 1453 | } else if (SkBitmap::kARGB_8888_Config == config && !src.isOpaque()) { |
| 1454 | const SkPMColor* SK_RESTRICT s = src.getAddr32(0, 0); |
| 1455 | while (--h >= 0) { |
| 1456 | for (int x = 0; x < w; x++) { |
| 1457 | alpha[x] = SkGetPackedA32(s[x]); |
| 1458 | } |
| 1459 | s = (const SkPMColor*)((const char*)s + rb); |
| 1460 | alpha += alphaRowBytes; |
| 1461 | } |
| 1462 | } else if (SkBitmap::kARGB_4444_Config == config && !src.isOpaque()) { |
| 1463 | const SkPMColor16* SK_RESTRICT s = src.getAddr16(0, 0); |
| 1464 | while (--h >= 0) { |
| 1465 | for (int x = 0; x < w; x++) { |
| 1466 | alpha[x] = SkPacked4444ToA32(s[x]); |
| 1467 | } |
| 1468 | s = (const SkPMColor16*)((const char*)s + rb); |
| 1469 | alpha += alphaRowBytes; |
| 1470 | } |
| 1471 | } else if (SkBitmap::kIndex8_Config == config && !src.isOpaque()) { |
| 1472 | SkColorTable* ct = src.getColorTable(); |
| 1473 | if (ct) { |
| 1474 | const SkPMColor* SK_RESTRICT table = ct->lockColors(); |
| 1475 | const uint8_t* SK_RESTRICT s = src.getAddr8(0, 0); |
| 1476 | while (--h >= 0) { |
| 1477 | for (int x = 0; x < w; x++) { |
| 1478 | alpha[x] = SkGetPackedA32(table[s[x]]); |
| 1479 | } |
| 1480 | s += rb; |
| 1481 | alpha += alphaRowBytes; |
| 1482 | } |
reed@google.com | 0a6151d | 2013-10-10 14:44:56 +0000 | [diff] [blame] | 1483 | ct->unlockColors(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1484 | } |
| 1485 | } else { // src is opaque, so just fill alpha[] with 0xFF |
| 1486 | memset(alpha, 0xFF, h * alphaRowBytes); |
| 1487 | } |
reed@android.com | 1cdcb51 | 2009-08-24 19:11:00 +0000 | [diff] [blame] | 1488 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1489 | } |
| 1490 | |
| 1491 | #include "SkPaint.h" |
| 1492 | #include "SkMaskFilter.h" |
| 1493 | #include "SkMatrix.h" |
| 1494 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1495 | bool SkBitmap::extractAlpha(SkBitmap* dst, const SkPaint* paint, |
djsollen@google.com | 57f4969 | 2011-02-23 20:46:31 +0000 | [diff] [blame] | 1496 | Allocator *allocator, SkIPoint* offset) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1497 | SkDEBUGCODE(this->validate();) |
| 1498 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1499 | SkBitmap tmpBitmap; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1500 | SkMatrix identity; |
| 1501 | SkMask srcM, dstM; |
| 1502 | |
| 1503 | srcM.fBounds.set(0, 0, this->width(), this->height()); |
| 1504 | srcM.fRowBytes = SkAlign4(this->width()); |
| 1505 | srcM.fFormat = SkMask::kA8_Format; |
| 1506 | |
| 1507 | SkMaskFilter* filter = paint ? paint->getMaskFilter() : NULL; |
| 1508 | |
| 1509 | // compute our (larger?) dst bounds if we have a filter |
| 1510 | if (NULL != filter) { |
| 1511 | identity.reset(); |
| 1512 | srcM.fImage = NULL; |
| 1513 | if (!filter->filterMask(&dstM, srcM, identity, NULL)) { |
| 1514 | goto NO_FILTER_CASE; |
| 1515 | } |
| 1516 | dstM.fRowBytes = SkAlign4(dstM.fBounds.width()); |
| 1517 | } else { |
| 1518 | NO_FILTER_CASE: |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1519 | tmpBitmap.setConfig(SkBitmap::kA8_Config, this->width(), this->height(), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1520 | srcM.fRowBytes); |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1521 | if (!tmpBitmap.allocPixels(allocator, NULL)) { |
| 1522 | // Allocation of pixels for alpha bitmap failed. |
| 1523 | SkDebugf("extractAlpha failed to allocate (%d,%d) alpha bitmap\n", |
| 1524 | tmpBitmap.width(), tmpBitmap.height()); |
| 1525 | return false; |
| 1526 | } |
| 1527 | GetBitmapAlpha(*this, tmpBitmap.getAddr8(0, 0), srcM.fRowBytes); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1528 | if (offset) { |
| 1529 | offset->set(0, 0); |
| 1530 | } |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1531 | tmpBitmap.swap(*dst); |
| 1532 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1533 | } |
bungeman@google.com | 02f5584 | 2011-10-04 21:25:00 +0000 | [diff] [blame] | 1534 | srcM.fImage = SkMask::AllocImage(srcM.computeImageSize()); |
| 1535 | SkAutoMaskFreeImage srcCleanup(srcM.fImage); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1536 | |
| 1537 | GetBitmapAlpha(*this, srcM.fImage, srcM.fRowBytes); |
| 1538 | if (!filter->filterMask(&dstM, srcM, identity, NULL)) { |
| 1539 | goto NO_FILTER_CASE; |
| 1540 | } |
bungeman@google.com | 02f5584 | 2011-10-04 21:25:00 +0000 | [diff] [blame] | 1541 | SkAutoMaskFreeImage dstCleanup(dstM.fImage); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1542 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1543 | tmpBitmap.setConfig(SkBitmap::kA8_Config, dstM.fBounds.width(), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1544 | dstM.fBounds.height(), dstM.fRowBytes); |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1545 | if (!tmpBitmap.allocPixels(allocator, NULL)) { |
| 1546 | // Allocation of pixels for alpha bitmap failed. |
| 1547 | SkDebugf("extractAlpha failed to allocate (%d,%d) alpha bitmap\n", |
| 1548 | tmpBitmap.width(), tmpBitmap.height()); |
| 1549 | return false; |
| 1550 | } |
| 1551 | memcpy(tmpBitmap.getPixels(), dstM.fImage, dstM.computeImageSize()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1552 | if (offset) { |
| 1553 | offset->set(dstM.fBounds.fLeft, dstM.fBounds.fTop); |
| 1554 | } |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1555 | SkDEBUGCODE(tmpBitmap.validate();) |
| 1556 | |
| 1557 | tmpBitmap.swap(*dst); |
| 1558 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1559 | } |
| 1560 | |
| 1561 | /////////////////////////////////////////////////////////////////////////////// |
| 1562 | |
| 1563 | enum { |
| 1564 | SERIALIZE_PIXELTYPE_NONE, |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 1565 | SERIALIZE_PIXELTYPE_REF_DATA |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1566 | }; |
| 1567 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1568 | void SkBitmap::flatten(SkFlattenableWriteBuffer& buffer) const { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1569 | buffer.writeInt(fWidth); |
| 1570 | buffer.writeInt(fHeight); |
| 1571 | buffer.writeInt(fRowBytes); |
| 1572 | buffer.writeInt(fConfig); |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 1573 | buffer.writeInt(fAlphaType); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1574 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1575 | if (fPixelRef) { |
djsollen@google.com | 5370cd9 | 2012-03-28 20:47:01 +0000 | [diff] [blame] | 1576 | if (fPixelRef->getFactory()) { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1577 | buffer.writeInt(SERIALIZE_PIXELTYPE_REF_DATA); |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1578 | buffer.writeUInt(SkToU32(fPixelRefOffset)); |
djsollen@google.com | 5370cd9 | 2012-03-28 20:47:01 +0000 | [diff] [blame] | 1579 | buffer.writeFlattenable(fPixelRef); |
| 1580 | return; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1581 | } |
| 1582 | // if we get here, we can't record the pixels |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1583 | buffer.writeInt(SERIALIZE_PIXELTYPE_NONE); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1584 | } else { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1585 | buffer.writeInt(SERIALIZE_PIXELTYPE_NONE); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1586 | } |
| 1587 | } |
| 1588 | |
| 1589 | void SkBitmap::unflatten(SkFlattenableReadBuffer& buffer) { |
| 1590 | this->reset(); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1591 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1592 | int width = buffer.readInt(); |
| 1593 | int height = buffer.readInt(); |
| 1594 | int rowBytes = buffer.readInt(); |
commit-bot@chromium.org | c0b7e10 | 2013-10-23 17:06:21 +0000 | [diff] [blame] | 1595 | Config config = (Config)buffer.readInt(); |
| 1596 | SkAlphaType alphaType = (SkAlphaType)buffer.readInt(); |
| 1597 | buffer.validate((width >= 0) && (height >= 0) && (rowBytes >= 0) && |
| 1598 | SkIsValidConfig(config) && validate_alphaType(config, alphaType)); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1599 | |
commit-bot@chromium.org | c2e9db3 | 2013-12-06 20:14:46 +0000 | [diff] [blame] | 1600 | bool configIsValid = this->setConfig(config, width, height, rowBytes, alphaType); |
| 1601 | // Note : Using (fRowBytes >= (fWidth * fBytesPerPixel)) in the following test can create false |
| 1602 | // positives if the multiplication causes an integer overflow. Use the division instead. |
| 1603 | buffer.validate(configIsValid && (fBytesPerPixel > 0) && |
| 1604 | ((fRowBytes / fBytesPerPixel) >= fWidth)); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1605 | |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1606 | int reftype = buffer.readInt(); |
commit-bot@chromium.org | ce33d60 | 2013-11-25 21:46:31 +0000 | [diff] [blame] | 1607 | if (buffer.validate((SERIALIZE_PIXELTYPE_REF_DATA == reftype) || |
| 1608 | (SERIALIZE_PIXELTYPE_NONE == reftype))) { |
| 1609 | switch (reftype) { |
| 1610 | case SERIALIZE_PIXELTYPE_REF_DATA: { |
| 1611 | size_t offset = buffer.readUInt(); |
| 1612 | SkPixelRef* pr = buffer.readPixelRef(); |
commit-bot@chromium.org | cd3b15c | 2013-12-04 17:06:49 +0000 | [diff] [blame] | 1613 | if (!buffer.validate((NULL == pr) || |
| 1614 | (pr->getAllocatedSizeInBytes() >= (offset + this->getSafeSize())))) { |
| 1615 | offset = 0; |
| 1616 | } |
commit-bot@chromium.org | ce33d60 | 2013-11-25 21:46:31 +0000 | [diff] [blame] | 1617 | SkSafeUnref(this->setPixelRef(pr, offset)); |
| 1618 | break; |
| 1619 | } |
| 1620 | case SERIALIZE_PIXELTYPE_NONE: |
| 1621 | break; |
| 1622 | default: |
| 1623 | SkDEBUGFAIL("unrecognized pixeltype in serialized data"); |
| 1624 | sk_throw(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1625 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1626 | } |
| 1627 | } |
| 1628 | |
| 1629 | /////////////////////////////////////////////////////////////////////////////// |
| 1630 | |
| 1631 | SkBitmap::RLEPixels::RLEPixels(int width, int height) { |
| 1632 | fHeight = height; |
commit-bot@chromium.org | 235002f | 2013-10-09 18:39:59 +0000 | [diff] [blame] | 1633 | fYPtrs = (uint8_t**)sk_calloc_throw(height * sizeof(uint8_t*)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1634 | } |
| 1635 | |
| 1636 | SkBitmap::RLEPixels::~RLEPixels() { |
| 1637 | sk_free(fYPtrs); |
| 1638 | } |
| 1639 | |
| 1640 | /////////////////////////////////////////////////////////////////////////////// |
| 1641 | |
| 1642 | #ifdef SK_DEBUG |
| 1643 | void SkBitmap::validate() const { |
| 1644 | SkASSERT(fConfig < kConfigCount); |
| 1645 | SkASSERT(fRowBytes >= (unsigned)ComputeRowBytes((Config)fConfig, fWidth)); |
scroggo@google.com | 8e990eb | 2013-06-14 15:55:56 +0000 | [diff] [blame] | 1646 | uint8_t allFlags = kImageIsOpaque_Flag | kImageIsVolatile_Flag | kImageIsImmutable_Flag; |
| 1647 | #ifdef SK_BUILD_FOR_ANDROID |
| 1648 | allFlags |= kHasHardwareMipMap_Flag; |
| 1649 | #endif |
| 1650 | SkASSERT(fFlags <= allFlags); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1651 | SkASSERT(fPixelLockCount >= 0); |
| 1652 | SkASSERT(NULL == fColorTable || (unsigned)fColorTable->getRefCnt() < 10000); |
| 1653 | SkASSERT((uint8_t)ComputeBytesPerPixel((Config)fConfig) == fBytesPerPixel); |
| 1654 | |
| 1655 | #if 0 // these asserts are not thread-correct, so disable for now |
| 1656 | if (fPixelRef) { |
| 1657 | if (fPixelLockCount > 0) { |
reed@google.com | ff0da4f | 2012-05-17 13:14:52 +0000 | [diff] [blame] | 1658 | SkASSERT(fPixelRef->isLocked()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1659 | } else { |
| 1660 | SkASSERT(NULL == fPixels); |
| 1661 | SkASSERT(NULL == fColorTable); |
| 1662 | } |
| 1663 | } |
| 1664 | #endif |
| 1665 | } |
| 1666 | #endif |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 1667 | |
| 1668 | #ifdef SK_DEVELOPER |
| 1669 | void SkBitmap::toString(SkString* str) const { |
| 1670 | |
| 1671 | static const char* gConfigNames[kConfigCount] = { |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 1672 | "NONE", "A8", "INDEX8", "565", "4444", "8888" |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 1673 | }; |
| 1674 | |
| 1675 | str->appendf("bitmap: ((%d, %d) %s", this->width(), this->height(), |
| 1676 | gConfigNames[this->config()]); |
| 1677 | |
| 1678 | str->append(" ("); |
| 1679 | if (this->isOpaque()) { |
| 1680 | str->append("opaque"); |
| 1681 | } else { |
| 1682 | str->append("transparent"); |
| 1683 | } |
| 1684 | if (this->isImmutable()) { |
| 1685 | str->append(", immutable"); |
| 1686 | } else { |
| 1687 | str->append(", not-immutable"); |
| 1688 | } |
| 1689 | str->append(")"); |
| 1690 | |
| 1691 | SkPixelRef* pr = this->pixelRef(); |
| 1692 | if (NULL == pr) { |
| 1693 | // show null or the explicit pixel address (rare) |
| 1694 | str->appendf(" pixels:%p", this->getPixels()); |
| 1695 | } else { |
| 1696 | const char* uri = pr->getURI(); |
| 1697 | if (NULL != uri) { |
| 1698 | str->appendf(" uri:\"%s\"", uri); |
| 1699 | } else { |
| 1700 | str->appendf(" pixelref:%p", pr); |
| 1701 | } |
| 1702 | } |
| 1703 | |
| 1704 | str->append(")"); |
| 1705 | } |
| 1706 | #endif |