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 | 57212f9 | 2013-12-30 14:40:38 +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 | 57212f9 | 2013-12-30 14:40:38 +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@google.com | 5f62ed7 | 2014-01-15 19:59:45 +0000 | [diff] [blame] | 104 | if (fPixelRef) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 105 | // ignore the values from the memcpy |
| 106 | fPixels = NULL; |
| 107 | fColorTable = NULL; |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 108 | // Note that what to for genID is somewhat arbitrary. We have no |
| 109 | // way to track changes to raw pixels across multiple SkBitmaps. |
| 110 | // Would benefit from an SkRawPixelRef type created by |
| 111 | // setPixels. |
| 112 | // Just leave the memcpy'ed one but they'll get out of sync |
| 113 | // as soon either is modified. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 114 | } |
| 115 | } |
| 116 | |
| 117 | SkDEBUGCODE(this->validate();) |
| 118 | return *this; |
| 119 | } |
| 120 | |
| 121 | void SkBitmap::swap(SkBitmap& other) { |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 122 | SkTSwap(fColorTable, other.fColorTable); |
| 123 | SkTSwap(fPixelRef, other.fPixelRef); |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 124 | SkTSwap(fPixelRefOrigin, other.fPixelRefOrigin); |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 125 | SkTSwap(fPixelLockCount, other.fPixelLockCount); |
| 126 | SkTSwap(fMipMap, other.fMipMap); |
| 127 | SkTSwap(fPixels, other.fPixels); |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 128 | SkTSwap(fRowBytes, other.fRowBytes); |
| 129 | SkTSwap(fWidth, other.fWidth); |
| 130 | SkTSwap(fHeight, other.fHeight); |
| 131 | SkTSwap(fConfig, other.fConfig); |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 132 | SkTSwap(fAlphaType, other.fAlphaType); |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 133 | SkTSwap(fFlags, other.fFlags); |
| 134 | SkTSwap(fBytesPerPixel, other.fBytesPerPixel); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 135 | |
| 136 | SkDEBUGCODE(this->validate();) |
| 137 | } |
| 138 | |
| 139 | void SkBitmap::reset() { |
| 140 | this->freePixels(); |
reed@android.com | 4516f47 | 2009-06-29 16:25:36 +0000 | [diff] [blame] | 141 | sk_bzero(this, sizeof(*this)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 142 | } |
| 143 | |
| 144 | int SkBitmap::ComputeBytesPerPixel(SkBitmap::Config config) { |
| 145 | int bpp; |
| 146 | switch (config) { |
| 147 | case kNo_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 148 | bpp = 0; // not applicable |
| 149 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 150 | case kA8_Config: |
| 151 | case kIndex8_Config: |
| 152 | bpp = 1; |
| 153 | break; |
| 154 | case kRGB_565_Config: |
| 155 | case kARGB_4444_Config: |
| 156 | bpp = 2; |
| 157 | break; |
| 158 | case kARGB_8888_Config: |
| 159 | bpp = 4; |
| 160 | break; |
| 161 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 162 | SkDEBUGFAIL("unknown config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 163 | bpp = 0; // error |
| 164 | break; |
| 165 | } |
| 166 | return bpp; |
| 167 | } |
| 168 | |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 169 | size_t SkBitmap::ComputeRowBytes(Config c, int width) { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 170 | if (width < 0) { |
| 171 | return 0; |
| 172 | } |
| 173 | |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 174 | int64_t rowBytes = 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 175 | |
| 176 | switch (c) { |
| 177 | case kNo_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 178 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 179 | case kA8_Config: |
| 180 | case kIndex8_Config: |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 181 | rowBytes = width; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 182 | break; |
| 183 | case kRGB_565_Config: |
| 184 | case kARGB_4444_Config: |
reed@google.com | 4856964 | 2013-12-30 19:21:22 +0000 | [diff] [blame] | 185 | // assign and then shift, so we don't overflow int |
| 186 | rowBytes = width; |
| 187 | rowBytes <<= 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 188 | break; |
| 189 | case kARGB_8888_Config: |
reed@google.com | 4856964 | 2013-12-30 19:21:22 +0000 | [diff] [blame] | 190 | // assign and then shift, so we don't overflow int |
| 191 | rowBytes = width; |
| 192 | rowBytes <<= 2; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 193 | break; |
| 194 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 195 | SkDEBUGFAIL("unknown config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 196 | break; |
| 197 | } |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 198 | return sk_64_isS32(rowBytes) ? sk_64_asS32(rowBytes) : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 199 | } |
| 200 | |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 201 | int64_t SkBitmap::ComputeSize64(Config config, int width, int height) { |
| 202 | int64_t rowBytes = sk_64_mul(ComputeBytesPerPixel(config), width); |
| 203 | return rowBytes * height; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 204 | } |
| 205 | |
| 206 | size_t SkBitmap::ComputeSize(Config c, int width, int height) { |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 207 | int64_t size = SkBitmap::ComputeSize64(c, width, height); |
| 208 | return sk_64_isS32(size) ? sk_64_asS32(size) : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 209 | } |
| 210 | |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 211 | int64_t SkBitmap::ComputeSafeSize64(Config config, |
| 212 | uint32_t width, |
| 213 | uint32_t height, |
| 214 | size_t rowBytes) { |
| 215 | int64_t safeSize = 0; |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 216 | if (height > 0) { |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 217 | int64_t lastRow = sk_64_mul(ComputeBytesPerPixel(config), width); |
| 218 | safeSize = sk_64_mul(height - 1, rowBytes) + lastRow; |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 219 | } |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 220 | SkASSERT(safeSize >= 0); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 221 | return safeSize; |
| 222 | } |
| 223 | |
| 224 | size_t SkBitmap::ComputeSafeSize(Config config, |
| 225 | uint32_t width, |
| 226 | uint32_t height, |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 227 | size_t rowBytes) { |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 228 | int64_t safeSize = ComputeSafeSize64(config, width, height, rowBytes); |
| 229 | int32_t safeSize32 = (int32_t)safeSize; |
skia.committer@gmail.com | f5e1f63 | 2013-12-31 07:01:36 +0000 | [diff] [blame] | 230 | |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 231 | if (safeSize32 != safeSize) { |
| 232 | safeSize32 = 0; |
| 233 | } |
| 234 | return safeSize32; |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 235 | } |
| 236 | |
reed@google.com | 86b2e43 | 2012-03-15 21:17:03 +0000 | [diff] [blame] | 237 | void SkBitmap::getBounds(SkRect* bounds) const { |
| 238 | SkASSERT(bounds); |
| 239 | bounds->set(0, 0, |
| 240 | SkIntToScalar(fWidth), SkIntToScalar(fHeight)); |
| 241 | } |
| 242 | |
reed@google.com | 80e1459 | 2012-03-16 14:58:07 +0000 | [diff] [blame] | 243 | void SkBitmap::getBounds(SkIRect* bounds) const { |
| 244 | SkASSERT(bounds); |
| 245 | bounds->set(0, 0, fWidth, fHeight); |
| 246 | } |
| 247 | |
reed@google.com | 86b2e43 | 2012-03-15 21:17:03 +0000 | [diff] [blame] | 248 | /////////////////////////////////////////////////////////////////////////////// |
| 249 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 250 | static bool validate_alphaType(SkBitmap::Config config, SkAlphaType alphaType, |
commit-bot@chromium.org | c0b7e10 | 2013-10-23 17:06:21 +0000 | [diff] [blame] | 251 | SkAlphaType* canonical = NULL) { |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 252 | switch (config) { |
| 253 | case SkBitmap::kNo_Config: |
| 254 | alphaType = kIgnore_SkAlphaType; |
| 255 | break; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 256 | case SkBitmap::kA8_Config: |
| 257 | if (kUnpremul_SkAlphaType == alphaType) { |
| 258 | alphaType = kPremul_SkAlphaType; |
| 259 | } |
| 260 | // fall-through |
| 261 | case SkBitmap::kIndex8_Config: |
| 262 | case SkBitmap::kARGB_4444_Config: |
| 263 | case SkBitmap::kARGB_8888_Config: |
| 264 | if (kIgnore_SkAlphaType == alphaType) { |
| 265 | return false; |
| 266 | } |
| 267 | break; |
| 268 | case SkBitmap::kRGB_565_Config: |
| 269 | alphaType = kOpaque_SkAlphaType; |
| 270 | break; |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 271 | default: |
| 272 | return false; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 273 | } |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 274 | if (canonical) { |
| 275 | *canonical = alphaType; |
| 276 | } |
| 277 | return true; |
| 278 | } |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 279 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 280 | bool SkBitmap::setConfig(Config config, int width, int height, size_t rowBytes, |
| 281 | SkAlphaType alphaType) { |
| 282 | if ((width | height) < 0) { |
reed@google.com | 9cd697c | 2013-10-21 14:12:13 +0000 | [diff] [blame] | 283 | goto BAD_CONFIG; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 284 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 285 | if (rowBytes == 0) { |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 286 | rowBytes = SkBitmap::ComputeRowBytes(config, width); |
halcanary@google.com | 4428734 | 2013-12-13 18:29:51 +0000 | [diff] [blame] | 287 | if (0 == rowBytes && kNo_Config != config && width > 0) { |
reed@google.com | 9cd697c | 2013-10-21 14:12:13 +0000 | [diff] [blame] | 288 | goto BAD_CONFIG; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 289 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 290 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 291 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 292 | if (!validate_alphaType(config, alphaType, &alphaType)) { |
reed@google.com | 9cd697c | 2013-10-21 14:12:13 +0000 | [diff] [blame] | 293 | goto BAD_CONFIG; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 294 | } |
| 295 | |
| 296 | this->freePixels(); |
| 297 | |
| 298 | fConfig = SkToU8(config); |
| 299 | fAlphaType = SkToU8(alphaType); |
reed@android.com | f459a49 | 2009-03-27 12:33:50 +0000 | [diff] [blame] | 300 | fWidth = width; |
| 301 | fHeight = height; |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 302 | fRowBytes = SkToU32(rowBytes); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 303 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 304 | fBytesPerPixel = (uint8_t)ComputeBytesPerPixel(config); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 305 | |
| 306 | SkDEBUGCODE(this->validate();) |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 307 | return true; |
agl@chromium.org | 6b8cb25 | 2009-06-01 23:52:37 +0000 | [diff] [blame] | 308 | |
reed@android.com | 9e0c2fc | 2009-06-02 18:54:28 +0000 | [diff] [blame] | 309 | // 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] | 310 | BAD_CONFIG: |
agl@chromium.org | 6b8cb25 | 2009-06-01 23:52:37 +0000 | [diff] [blame] | 311 | this->reset(); |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 312 | return false; |
| 313 | } |
| 314 | |
commit-bot@chromium.org | 6e3e422 | 2013-11-06 10:08:30 +0000 | [diff] [blame] | 315 | bool SkBitmap::setConfig(const SkImageInfo& info, size_t rowBytes) { |
| 316 | return this->setConfig(SkImageInfoToBitmapConfig(info), info.fWidth, |
| 317 | info.fHeight, rowBytes, info.fAlphaType); |
| 318 | } |
| 319 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 320 | bool SkBitmap::setAlphaType(SkAlphaType alphaType) { |
| 321 | if (!validate_alphaType(this->config(), alphaType, &alphaType)) { |
| 322 | return false; |
| 323 | } |
| 324 | fAlphaType = SkToU8(alphaType); |
| 325 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 326 | } |
| 327 | |
| 328 | void SkBitmap::updatePixelsFromRef() const { |
| 329 | if (NULL != fPixelRef) { |
| 330 | if (fPixelLockCount > 0) { |
reed@google.com | ff0da4f | 2012-05-17 13:14:52 +0000 | [diff] [blame] | 331 | SkASSERT(fPixelRef->isLocked()); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 332 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 333 | void* p = fPixelRef->pixels(); |
| 334 | if (NULL != p) { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 335 | p = (char*)p |
reed@google.com | 303c475 | 2014-01-09 20:00:14 +0000 | [diff] [blame] | 336 | + fPixelRefOrigin.fY * fRowBytes |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 337 | + fPixelRefOrigin.fX * fBytesPerPixel; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 338 | } |
| 339 | fPixels = p; |
reed@google.com | 5f62ed7 | 2014-01-15 19:59:45 +0000 | [diff] [blame] | 340 | fColorTable = fPixelRef->colorTable(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 341 | } else { |
| 342 | SkASSERT(0 == fPixelLockCount); |
| 343 | fPixels = NULL; |
reed@google.com | 5f62ed7 | 2014-01-15 19:59:45 +0000 | [diff] [blame] | 344 | fColorTable = NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 345 | } |
| 346 | } |
| 347 | } |
| 348 | |
reed@google.com | 9230ea2 | 2013-12-09 22:01:03 +0000 | [diff] [blame] | 349 | static bool config_to_colorType(SkBitmap::Config config, SkColorType* ctOut) { |
| 350 | SkColorType ct; |
| 351 | switch (config) { |
| 352 | case SkBitmap::kA8_Config: |
| 353 | ct = kAlpha_8_SkColorType; |
| 354 | break; |
| 355 | case SkBitmap::kIndex8_Config: |
| 356 | ct = kIndex_8_SkColorType; |
| 357 | break; |
| 358 | case SkBitmap::kRGB_565_Config: |
| 359 | ct = kRGB_565_SkColorType; |
| 360 | break; |
| 361 | case SkBitmap::kARGB_4444_Config: |
| 362 | ct = kARGB_4444_SkColorType; |
| 363 | break; |
| 364 | case SkBitmap::kARGB_8888_Config: |
| 365 | ct = kPMColor_SkColorType; |
| 366 | break; |
| 367 | case SkBitmap::kNo_Config: |
| 368 | default: |
| 369 | return false; |
| 370 | } |
| 371 | if (ctOut) { |
| 372 | *ctOut = ct; |
| 373 | } |
| 374 | return true; |
| 375 | } |
| 376 | |
| 377 | bool SkBitmap::asImageInfo(SkImageInfo* info) const { |
| 378 | SkColorType ct; |
| 379 | if (!config_to_colorType(this->config(), &ct)) { |
| 380 | return false; |
| 381 | } |
| 382 | if (info) { |
| 383 | info->fWidth = fWidth; |
| 384 | info->fHeight = fHeight; |
| 385 | info->fAlphaType = this->alphaType(); |
| 386 | info->fColorType = ct; |
| 387 | } |
| 388 | return true; |
| 389 | } |
| 390 | |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 391 | SkPixelRef* SkBitmap::setPixelRef(SkPixelRef* pr, int dx, int dy) { |
reed@google.com | dcea530 | 2014-01-03 13:43:01 +0000 | [diff] [blame] | 392 | #ifdef SK_DEBUG |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 393 | if (pr) { |
reed@google.com | dcea530 | 2014-01-03 13:43:01 +0000 | [diff] [blame] | 394 | SkImageInfo info; |
| 395 | if (this->asImageInfo(&info)) { |
| 396 | const SkImageInfo& prInfo = pr->info(); |
| 397 | SkASSERT(info.fWidth <= prInfo.fWidth); |
| 398 | SkASSERT(info.fHeight <= prInfo.fHeight); |
| 399 | SkASSERT(info.fColorType == prInfo.fColorType); |
| 400 | switch (prInfo.fAlphaType) { |
| 401 | case kIgnore_SkAlphaType: |
| 402 | SkASSERT(fAlphaType == kIgnore_SkAlphaType); |
| 403 | break; |
| 404 | case kOpaque_SkAlphaType: |
| 405 | case kPremul_SkAlphaType: |
| 406 | SkASSERT(info.fAlphaType == kOpaque_SkAlphaType || |
| 407 | info.fAlphaType == kPremul_SkAlphaType); |
| 408 | break; |
| 409 | case kUnpremul_SkAlphaType: |
| 410 | SkASSERT(info.fAlphaType == kOpaque_SkAlphaType || |
| 411 | info.fAlphaType == kUnpremul_SkAlphaType); |
| 412 | break; |
| 413 | } |
| 414 | } |
| 415 | } |
| 416 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 417 | |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 418 | if (pr) { |
| 419 | const SkImageInfo& info = pr->info(); |
| 420 | fPixelRefOrigin.set(SkPin32(dx, 0, info.fWidth), |
| 421 | SkPin32(dy, 0, info.fHeight)); |
| 422 | } else { |
| 423 | // ignore dx,dy if there is no pixelref |
| 424 | fPixelRefOrigin.setZero(); |
| 425 | } |
| 426 | |
| 427 | if (fPixelRef != pr) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 428 | if (fPixelRef != pr) { |
| 429 | this->freePixels(); |
| 430 | SkASSERT(NULL == fPixelRef); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 431 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 432 | SkSafeRef(pr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 433 | fPixelRef = pr; |
| 434 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 435 | this->updatePixelsFromRef(); |
| 436 | } |
| 437 | |
| 438 | SkDEBUGCODE(this->validate();) |
| 439 | return pr; |
| 440 | } |
| 441 | |
| 442 | void SkBitmap::lockPixels() const { |
djsollen@google.com | 7c6d264 | 2013-08-06 12:19:38 +0000 | [diff] [blame] | 443 | if (NULL != fPixelRef && 0 == sk_atomic_inc(&fPixelLockCount)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 444 | fPixelRef->lockPixels(); |
| 445 | this->updatePixelsFromRef(); |
| 446 | } |
| 447 | SkDEBUGCODE(this->validate();) |
| 448 | } |
| 449 | |
| 450 | void SkBitmap::unlockPixels() const { |
| 451 | SkASSERT(NULL == fPixelRef || fPixelLockCount > 0); |
| 452 | |
djsollen@google.com | 7c6d264 | 2013-08-06 12:19:38 +0000 | [diff] [blame] | 453 | if (NULL != fPixelRef && 1 == sk_atomic_dec(&fPixelLockCount)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 454 | fPixelRef->unlockPixels(); |
| 455 | this->updatePixelsFromRef(); |
| 456 | } |
| 457 | SkDEBUGCODE(this->validate();) |
| 458 | } |
| 459 | |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 460 | bool SkBitmap::lockPixelsAreWritable() const { |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 461 | return (fPixelRef) ? fPixelRef->lockPixelsAreWritable() : false; |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 462 | } |
| 463 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 464 | void SkBitmap::setPixels(void* p, SkColorTable* ctable) { |
reed@google.com | 8e1034e | 2012-07-30 13:16:35 +0000 | [diff] [blame] | 465 | if (NULL == p) { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 466 | this->setPixelRef(NULL); |
reed@google.com | 8e1034e | 2012-07-30 13:16:35 +0000 | [diff] [blame] | 467 | return; |
| 468 | } |
| 469 | |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 470 | SkImageInfo info; |
| 471 | if (!this->asImageInfo(&info)) { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 472 | this->setPixelRef(NULL); |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 473 | return; |
| 474 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 475 | |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 476 | SkPixelRef* pr = SkMallocPixelRef::NewDirect(info, p, fRowBytes, ctable); |
| 477 | if (NULL == pr) { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 478 | this->setPixelRef(NULL); |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 479 | return; |
| 480 | } |
| 481 | |
| 482 | this->setPixelRef(pr)->unref(); |
| 483 | |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 484 | // since we're already allocated, we lockPixels right away |
| 485 | this->lockPixels(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 486 | SkDEBUGCODE(this->validate();) |
| 487 | } |
| 488 | |
| 489 | bool SkBitmap::allocPixels(Allocator* allocator, SkColorTable* ctable) { |
| 490 | HeapAllocator stdalloc; |
skia.committer@gmail.com | d2ac07b | 2014-01-25 07:01:49 +0000 | [diff] [blame] | 491 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 492 | if (NULL == allocator) { |
| 493 | allocator = &stdalloc; |
| 494 | } |
| 495 | return allocator->allocPixelRef(this, ctable); |
| 496 | } |
| 497 | |
reed@google.com | 9ebcac5 | 2014-01-24 18:53:42 +0000 | [diff] [blame] | 498 | /////////////////////////////////////////////////////////////////////////////// |
| 499 | |
| 500 | static bool reset_return_false(SkBitmap* bm) { |
| 501 | bm->reset(); |
| 502 | return false; |
| 503 | } |
| 504 | |
| 505 | bool SkBitmap::allocPixels(const SkImageInfo& info, SkPixelRefFactory* factory, |
| 506 | SkColorTable* ctable) { |
| 507 | if (kIndex_8_SkColorType == info.fColorType && NULL == ctable) { |
| 508 | return reset_return_false(this); |
| 509 | } |
| 510 | if (!this->setConfig(info)) { |
| 511 | return reset_return_false(this); |
| 512 | } |
| 513 | |
| 514 | SkMallocPixelRef::PRFactory defaultFactory; |
| 515 | if (NULL == factory) { |
| 516 | factory = &defaultFactory; |
| 517 | } |
skia.committer@gmail.com | d2ac07b | 2014-01-25 07:01:49 +0000 | [diff] [blame] | 518 | |
reed@google.com | 9ebcac5 | 2014-01-24 18:53:42 +0000 | [diff] [blame] | 519 | SkPixelRef* pr = factory->create(info, ctable); |
| 520 | if (NULL == pr) { |
| 521 | return reset_return_false(this); |
| 522 | } |
| 523 | this->setPixelRef(pr)->unref(); |
| 524 | |
| 525 | // TODO: lockPixels could/should return bool or void*/NULL |
| 526 | this->lockPixels(); |
| 527 | if (NULL == this->getPixels()) { |
| 528 | return reset_return_false(this); |
| 529 | } |
| 530 | return true; |
| 531 | } |
| 532 | |
| 533 | bool SkBitmap::installPixels(const SkImageInfo& info, void* pixels, size_t rb, |
| 534 | void (*releaseProc)(void* addr, void* context), |
| 535 | void* context) { |
| 536 | if (!this->setConfig(info)) { |
| 537 | this->reset(); |
| 538 | return false; |
| 539 | } |
| 540 | |
| 541 | SkPixelRef* pr = SkMallocPixelRef::NewWithProc(info, rb, NULL, pixels, |
| 542 | releaseProc, context); |
| 543 | if (!pr) { |
| 544 | this->reset(); |
| 545 | return false; |
| 546 | } |
| 547 | |
| 548 | this->setPixelRef(pr)->unref(); |
| 549 | return true; |
| 550 | } |
| 551 | |
reed@google.com | eb9a46c | 2014-01-25 16:46:20 +0000 | [diff] [blame^] | 552 | bool SkBitmap::allocConfigPixels(Config config, int width, int height, |
| 553 | bool isOpaque) { |
| 554 | SkColorType ct; |
| 555 | if (!config_to_colorType(config, &ct)) { |
| 556 | return false; |
| 557 | } |
| 558 | |
| 559 | SkAlphaType at = isOpaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType; |
| 560 | if (!validate_alphaType(config, at, &at)) { |
| 561 | return false; |
| 562 | } |
| 563 | |
| 564 | return this->allocPixels(SkImageInfo::Make(width, height, ct, at)); |
| 565 | } |
| 566 | |
| 567 | /////////////////////////////////////////////////////////////////////////////// |
| 568 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 569 | void SkBitmap::freePixels() { |
| 570 | // if we're gonna free the pixels, we certainly need to free the mipmap |
| 571 | this->freeMipMap(); |
| 572 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 573 | if (NULL != fPixelRef) { |
| 574 | if (fPixelLockCount > 0) { |
| 575 | fPixelRef->unlockPixels(); |
| 576 | } |
| 577 | fPixelRef->unref(); |
| 578 | fPixelRef = NULL; |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 579 | fPixelRefOrigin.setZero(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 580 | } |
| 581 | fPixelLockCount = 0; |
| 582 | fPixels = NULL; |
reed@google.com | 5f62ed7 | 2014-01-15 19:59:45 +0000 | [diff] [blame] | 583 | fColorTable = NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 584 | } |
| 585 | |
| 586 | void SkBitmap::freeMipMap() { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 587 | if (fMipMap) { |
| 588 | fMipMap->unref(); |
| 589 | fMipMap = NULL; |
| 590 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 591 | } |
| 592 | |
| 593 | uint32_t SkBitmap::getGenerationID() const { |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 594 | return (fPixelRef) ? fPixelRef->getGenerationID() : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 595 | } |
| 596 | |
| 597 | void SkBitmap::notifyPixelsChanged() const { |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 598 | SkASSERT(!this->isImmutable()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 599 | if (fPixelRef) { |
| 600 | fPixelRef->notifyPixelsChanged(); |
| 601 | } |
| 602 | } |
| 603 | |
commit-bot@chromium.org | b8d00db | 2013-06-26 19:18:23 +0000 | [diff] [blame] | 604 | GrTexture* SkBitmap::getTexture() const { |
reed@android.com | ce4e53a | 2010-09-09 16:01:26 +0000 | [diff] [blame] | 605 | return fPixelRef ? fPixelRef->getTexture() : NULL; |
| 606 | } |
| 607 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 608 | /////////////////////////////////////////////////////////////////////////////// |
| 609 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 610 | /** We explicitly use the same allocator for our pixels that SkMask does, |
| 611 | so that we can freely assign memory allocated by one class to the other. |
| 612 | */ |
| 613 | bool SkBitmap::HeapAllocator::allocPixelRef(SkBitmap* dst, |
| 614 | SkColorTable* ctable) { |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 615 | SkImageInfo info; |
| 616 | if (!dst->asImageInfo(&info)) { |
| 617 | // SkDebugf("unsupported config for info %d\n", dst->config()); |
| 618 | return false; |
| 619 | } |
skia.committer@gmail.com | 96f5fa0 | 2013-12-16 07:01:40 +0000 | [diff] [blame] | 620 | |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 621 | SkPixelRef* pr = SkMallocPixelRef::NewAllocate(info, dst->rowBytes(), |
| 622 | ctable); |
| 623 | if (NULL == pr) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 624 | return false; |
| 625 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 626 | |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 627 | dst->setPixelRef(pr)->unref(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 628 | // since we're already allocated, we lockPixels right away |
| 629 | dst->lockPixels(); |
| 630 | return true; |
| 631 | } |
| 632 | |
| 633 | /////////////////////////////////////////////////////////////////////////////// |
| 634 | |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 635 | size_t SkBitmap::getSafeSize() const { |
| 636 | // This is intended to be a size_t version of ComputeSafeSize64(), just |
| 637 | // faster. The computation is meant to be identical. |
| 638 | return (fHeight ? ((fHeight - 1) * fRowBytes) + |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 639 | ComputeRowBytes(this->config(), fWidth): 0); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 640 | } |
| 641 | |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 642 | bool SkBitmap::copyPixelsTo(void* const dst, size_t dstSize, |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 643 | size_t dstRowBytes, bool preserveDstPad) const { |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 644 | |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 645 | if (0 == dstRowBytes) { |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 646 | dstRowBytes = fRowBytes; |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 647 | } |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 648 | |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 649 | if (dstRowBytes < ComputeRowBytes(this->config(), fWidth) || |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 650 | dst == NULL || (getPixels() == NULL && pixelRef() == NULL)) |
| 651 | return false; |
| 652 | |
bsalomon@google.com | c698097 | 2011-11-02 19:57:21 +0000 | [diff] [blame] | 653 | if (!preserveDstPad && static_cast<uint32_t>(dstRowBytes) == fRowBytes) { |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 654 | size_t safeSize = this->getSafeSize(); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 655 | if (safeSize > dstSize || safeSize == 0) |
| 656 | return false; |
| 657 | else { |
| 658 | SkAutoLockPixels lock(*this); |
| 659 | // This implementation will write bytes beyond the end of each row, |
| 660 | // excluding the last row, if the bitmap's stride is greater than |
| 661 | // strictly required by the current config. |
| 662 | memcpy(dst, getPixels(), safeSize); |
| 663 | |
| 664 | return true; |
| 665 | } |
| 666 | } else { |
| 667 | // 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] | 668 | if (ComputeSafeSize(this->config(), fWidth, fHeight, dstRowBytes) > |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 669 | dstSize) |
| 670 | return false; |
| 671 | else { |
| 672 | // Just copy what we need on each line. |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 673 | size_t rowBytes = ComputeRowBytes(this->config(), fWidth); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 674 | SkAutoLockPixels lock(*this); |
| 675 | const uint8_t* srcP = reinterpret_cast<const uint8_t*>(getPixels()); |
| 676 | uint8_t* dstP = reinterpret_cast<uint8_t*>(dst); |
| 677 | for (uint32_t row = 0; row < fHeight; |
| 678 | row++, srcP += fRowBytes, dstP += dstRowBytes) { |
| 679 | memcpy(dstP, srcP, rowBytes); |
| 680 | } |
| 681 | |
| 682 | return true; |
| 683 | } |
| 684 | } |
| 685 | } |
| 686 | |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 687 | /////////////////////////////////////////////////////////////////////////////// |
| 688 | |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 689 | bool SkBitmap::isImmutable() const { |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 690 | return fPixelRef ? fPixelRef->isImmutable() : |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 691 | fFlags & kImageIsImmutable_Flag; |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 692 | } |
| 693 | |
| 694 | void SkBitmap::setImmutable() { |
| 695 | if (fPixelRef) { |
| 696 | fPixelRef->setImmutable(); |
| 697 | } else { |
| 698 | fFlags |= kImageIsImmutable_Flag; |
| 699 | } |
| 700 | } |
| 701 | |
junov@google.com | 4ee7ae5 | 2011-06-30 17:30:49 +0000 | [diff] [blame] | 702 | bool SkBitmap::isVolatile() const { |
| 703 | return (fFlags & kImageIsVolatile_Flag) != 0; |
| 704 | } |
| 705 | |
| 706 | void SkBitmap::setIsVolatile(bool isVolatile) { |
| 707 | if (isVolatile) { |
| 708 | fFlags |= kImageIsVolatile_Flag; |
| 709 | } else { |
| 710 | fFlags &= ~kImageIsVolatile_Flag; |
| 711 | } |
| 712 | } |
| 713 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 714 | void* SkBitmap::getAddr(int x, int y) const { |
| 715 | SkASSERT((unsigned)x < (unsigned)this->width()); |
| 716 | SkASSERT((unsigned)y < (unsigned)this->height()); |
| 717 | |
| 718 | char* base = (char*)this->getPixels(); |
| 719 | if (base) { |
| 720 | base += y * this->rowBytes(); |
| 721 | switch (this->config()) { |
| 722 | case SkBitmap::kARGB_8888_Config: |
| 723 | base += x << 2; |
| 724 | break; |
| 725 | case SkBitmap::kARGB_4444_Config: |
| 726 | case SkBitmap::kRGB_565_Config: |
| 727 | base += x << 1; |
| 728 | break; |
| 729 | case SkBitmap::kA8_Config: |
| 730 | case SkBitmap::kIndex8_Config: |
| 731 | base += x; |
| 732 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 733 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 734 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 735 | SkDEBUGFAIL("Can't return addr for config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 736 | base = NULL; |
| 737 | break; |
| 738 | } |
| 739 | } |
| 740 | return base; |
| 741 | } |
| 742 | |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 743 | SkColor SkBitmap::getColor(int x, int y) const { |
| 744 | SkASSERT((unsigned)x < (unsigned)this->width()); |
| 745 | SkASSERT((unsigned)y < (unsigned)this->height()); |
| 746 | |
| 747 | switch (this->config()) { |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 748 | case SkBitmap::kA8_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 749 | uint8_t* addr = this->getAddr8(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 750 | return SkColorSetA(0, addr[0]); |
| 751 | } |
| 752 | case SkBitmap::kIndex8_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 753 | SkPMColor c = this->getIndex8Color(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 754 | return SkUnPreMultiply::PMColorToColor(c); |
| 755 | } |
| 756 | case SkBitmap::kRGB_565_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 757 | uint16_t* addr = this->getAddr16(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 758 | return SkPixel16ToColor(addr[0]); |
| 759 | } |
| 760 | case SkBitmap::kARGB_4444_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 761 | uint16_t* addr = this->getAddr16(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 762 | SkPMColor c = SkPixel4444ToPixel32(addr[0]); |
| 763 | return SkUnPreMultiply::PMColorToColor(c); |
| 764 | } |
| 765 | case SkBitmap::kARGB_8888_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 766 | uint32_t* addr = this->getAddr32(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 767 | return SkUnPreMultiply::PMColorToColor(addr[0]); |
| 768 | } |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 769 | case kNo_Config: |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 770 | default: |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 771 | SkASSERT(false); |
| 772 | return 0; |
| 773 | } |
| 774 | SkASSERT(false); // Not reached. |
| 775 | return 0; |
| 776 | } |
| 777 | |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 778 | bool SkBitmap::ComputeIsOpaque(const SkBitmap& bm) { |
| 779 | SkAutoLockPixels alp(bm); |
| 780 | if (!bm.getPixels()) { |
| 781 | return false; |
| 782 | } |
| 783 | |
| 784 | const int height = bm.height(); |
| 785 | const int width = bm.width(); |
| 786 | |
| 787 | switch (bm.config()) { |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 788 | case SkBitmap::kA8_Config: { |
| 789 | unsigned a = 0xFF; |
| 790 | for (int y = 0; y < height; ++y) { |
| 791 | const uint8_t* row = bm.getAddr8(0, y); |
| 792 | for (int x = 0; x < width; ++x) { |
| 793 | a &= row[x]; |
| 794 | } |
| 795 | if (0xFF != a) { |
| 796 | return false; |
| 797 | } |
| 798 | } |
| 799 | return true; |
| 800 | } break; |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 801 | case SkBitmap::kIndex8_Config: { |
| 802 | SkAutoLockColors alc(bm); |
| 803 | const SkPMColor* table = alc.colors(); |
| 804 | if (!table) { |
| 805 | return false; |
| 806 | } |
reed@google.com | 140d728 | 2013-01-07 20:25:04 +0000 | [diff] [blame] | 807 | SkPMColor c = (SkPMColor)~0; |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 808 | for (int i = bm.getColorTable()->count() - 1; i >= 0; --i) { |
| 809 | c &= table[i]; |
| 810 | } |
| 811 | return 0xFF == SkGetPackedA32(c); |
| 812 | } break; |
| 813 | case SkBitmap::kRGB_565_Config: |
| 814 | return true; |
| 815 | break; |
| 816 | case SkBitmap::kARGB_4444_Config: { |
| 817 | unsigned c = 0xFFFF; |
| 818 | for (int y = 0; y < height; ++y) { |
| 819 | const SkPMColor16* row = bm.getAddr16(0, y); |
| 820 | for (int x = 0; x < width; ++x) { |
| 821 | c &= row[x]; |
| 822 | } |
| 823 | if (0xF != SkGetPackedA4444(c)) { |
| 824 | return false; |
| 825 | } |
| 826 | } |
| 827 | return true; |
| 828 | } break; |
| 829 | case SkBitmap::kARGB_8888_Config: { |
reed@google.com | 140d728 | 2013-01-07 20:25:04 +0000 | [diff] [blame] | 830 | SkPMColor c = (SkPMColor)~0; |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 831 | for (int y = 0; y < height; ++y) { |
| 832 | const SkPMColor* row = bm.getAddr32(0, y); |
| 833 | for (int x = 0; x < width; ++x) { |
| 834 | c &= row[x]; |
| 835 | } |
| 836 | if (0xFF != SkGetPackedA32(c)) { |
| 837 | return false; |
| 838 | } |
| 839 | } |
| 840 | return true; |
| 841 | } |
| 842 | default: |
| 843 | break; |
| 844 | } |
| 845 | return false; |
| 846 | } |
| 847 | |
| 848 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 849 | /////////////////////////////////////////////////////////////////////////////// |
| 850 | /////////////////////////////////////////////////////////////////////////////// |
| 851 | |
reed@google.com | 45f746f | 2013-06-21 19:51:31 +0000 | [diff] [blame] | 852 | static uint16_t pack_8888_to_4444(unsigned a, unsigned r, unsigned g, unsigned b) { |
| 853 | unsigned pixel = (SkA32To4444(a) << SK_A4444_SHIFT) | |
| 854 | (SkR32To4444(r) << SK_R4444_SHIFT) | |
| 855 | (SkG32To4444(g) << SK_G4444_SHIFT) | |
| 856 | (SkB32To4444(b) << SK_B4444_SHIFT); |
| 857 | return SkToU16(pixel); |
| 858 | } |
| 859 | |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 860 | void SkBitmap::internalErase(const SkIRect& area, |
| 861 | U8CPU a, U8CPU r, U8CPU g, U8CPU b) const { |
| 862 | #ifdef SK_DEBUG |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 863 | SkDEBUGCODE(this->validate();) |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 864 | SkASSERT(!area.isEmpty()); |
| 865 | { |
reed@google.com | 92833f9 | 2013-06-28 19:47:43 +0000 | [diff] [blame] | 866 | SkIRect total = { 0, 0, this->width(), this->height() }; |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 867 | SkASSERT(total.contains(area)); |
| 868 | } |
| 869 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 870 | |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 871 | if (kNo_Config == fConfig || kIndex8_Config == fConfig) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 872 | return; |
| 873 | } |
| 874 | |
| 875 | SkAutoLockPixels alp(*this); |
| 876 | // perform this check after the lock call |
| 877 | if (!this->readyToDraw()) { |
| 878 | return; |
| 879 | } |
| 880 | |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 881 | int height = area.height(); |
| 882 | const int width = area.width(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 883 | const int rowBytes = fRowBytes; |
| 884 | |
| 885 | // make rgb premultiplied |
| 886 | if (255 != a) { |
| 887 | r = SkAlphaMul(r, a); |
| 888 | g = SkAlphaMul(g, a); |
| 889 | b = SkAlphaMul(b, a); |
| 890 | } |
| 891 | |
| 892 | switch (fConfig) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 893 | case kA8_Config: { |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 894 | uint8_t* p = this->getAddr8(area.fLeft, area.fTop); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 895 | while (--height >= 0) { |
| 896 | memset(p, a, width); |
| 897 | p += rowBytes; |
| 898 | } |
| 899 | break; |
| 900 | } |
reed@google.com | 45f746f | 2013-06-21 19:51:31 +0000 | [diff] [blame] | 901 | case kARGB_4444_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 902 | case kRGB_565_Config: { |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 903 | uint16_t* p = this->getAddr16(area.fLeft, area.fTop);; |
reed@google.com | 45f746f | 2013-06-21 19:51:31 +0000 | [diff] [blame] | 904 | uint16_t v; |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 905 | |
reed@google.com | 45f746f | 2013-06-21 19:51:31 +0000 | [diff] [blame] | 906 | if (kARGB_4444_Config == fConfig) { |
| 907 | v = pack_8888_to_4444(a, r, g, b); |
| 908 | } else { |
| 909 | v = SkPackRGB16(r >> (8 - SK_R16_BITS), |
| 910 | g >> (8 - SK_G16_BITS), |
| 911 | b >> (8 - SK_B16_BITS)); |
| 912 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 913 | while (--height >= 0) { |
| 914 | sk_memset16(p, v, width); |
| 915 | p = (uint16_t*)((char*)p + rowBytes); |
| 916 | } |
| 917 | break; |
| 918 | } |
| 919 | case kARGB_8888_Config: { |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 920 | uint32_t* p = this->getAddr32(area.fLeft, area.fTop); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 921 | uint32_t v = SkPackARGB32(a, r, g, b); |
| 922 | |
| 923 | while (--height >= 0) { |
| 924 | sk_memset32(p, v, width); |
| 925 | p = (uint32_t*)((char*)p + rowBytes); |
| 926 | } |
| 927 | break; |
| 928 | } |
| 929 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 930 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 931 | this->notifyPixelsChanged(); |
| 932 | } |
| 933 | |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 934 | 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] | 935 | SkIRect area = { 0, 0, this->width(), this->height() }; |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 936 | if (!area.isEmpty()) { |
| 937 | this->internalErase(area, a, r, g, b); |
| 938 | } |
| 939 | } |
| 940 | |
| 941 | void SkBitmap::eraseArea(const SkIRect& rect, SkColor c) const { |
reed@google.com | 92833f9 | 2013-06-28 19:47:43 +0000 | [diff] [blame] | 942 | SkIRect area = { 0, 0, this->width(), this->height() }; |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 943 | if (area.intersect(rect)) { |
| 944 | this->internalErase(area, SkColorGetA(c), SkColorGetR(c), |
| 945 | SkColorGetG(c), SkColorGetB(c)); |
| 946 | } |
| 947 | } |
| 948 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 949 | ////////////////////////////////////////////////////////////////////////////////////// |
| 950 | ////////////////////////////////////////////////////////////////////////////////////// |
| 951 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 952 | bool SkBitmap::extractSubset(SkBitmap* result, const SkIRect& subset) const { |
| 953 | SkDEBUGCODE(this->validate();) |
| 954 | |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 955 | if (NULL == result || NULL == fPixelRef) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 956 | return false; // no src pixels |
| 957 | } |
| 958 | |
| 959 | SkIRect srcRect, r; |
| 960 | srcRect.set(0, 0, this->width(), this->height()); |
| 961 | if (!r.intersect(srcRect, subset)) { |
| 962 | return false; // r is empty (i.e. no intersection) |
| 963 | } |
| 964 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 965 | if (fPixelRef->getTexture() != NULL) { |
| 966 | // Do a deep copy |
| 967 | SkPixelRef* pixelRef = fPixelRef->deepCopy(this->config(), &subset); |
| 968 | if (pixelRef != NULL) { |
| 969 | SkBitmap dst; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 970 | dst.setConfig(this->config(), subset.width(), subset.height(), 0, |
| 971 | this->alphaType()); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 972 | dst.setIsVolatile(this->isVolatile()); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 973 | dst.setPixelRef(pixelRef)->unref(); |
| 974 | SkDEBUGCODE(dst.validate()); |
| 975 | result->swap(dst); |
| 976 | return true; |
| 977 | } |
| 978 | } |
| 979 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 980 | // If the upper left of the rectangle was outside the bounds of this SkBitmap, we should have |
| 981 | // exited above. |
| 982 | SkASSERT(static_cast<unsigned>(r.fLeft) < static_cast<unsigned>(this->width())); |
| 983 | SkASSERT(static_cast<unsigned>(r.fTop) < static_cast<unsigned>(this->height())); |
| 984 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 985 | SkBitmap dst; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 986 | dst.setConfig(this->config(), r.width(), r.height(), this->rowBytes(), |
| 987 | this->alphaType()); |
skyostil@google.com | 0eb7576 | 2012-01-16 10:45:53 +0000 | [diff] [blame] | 988 | dst.setIsVolatile(this->isVolatile()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 989 | |
| 990 | if (fPixelRef) { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 991 | SkIPoint origin = fPixelRefOrigin; |
| 992 | origin.fX += r.fLeft; |
| 993 | origin.fY += r.fTop; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 994 | // share the pixelref with a custom offset |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 995 | dst.setPixelRef(fPixelRef, origin); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 996 | } |
| 997 | SkDEBUGCODE(dst.validate();) |
| 998 | |
| 999 | // we know we're good, so commit to result |
| 1000 | result->swap(dst); |
| 1001 | return true; |
| 1002 | } |
| 1003 | |
| 1004 | /////////////////////////////////////////////////////////////////////////////// |
| 1005 | |
| 1006 | #include "SkCanvas.h" |
| 1007 | #include "SkPaint.h" |
| 1008 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1009 | bool SkBitmap::canCopyTo(Config dstConfig) const { |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 1010 | if (this->config() == kNo_Config) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1011 | return false; |
| 1012 | } |
| 1013 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1014 | bool sameConfigs = (this->config() == dstConfig); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1015 | switch (dstConfig) { |
| 1016 | case kA8_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1017 | case kRGB_565_Config: |
| 1018 | case kARGB_8888_Config: |
| 1019 | break; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1020 | case kIndex8_Config: |
| 1021 | if (!sameConfigs) { |
| 1022 | return false; |
| 1023 | } |
| 1024 | break; |
scroggo@google.com | 8dc8bc5 | 2013-08-07 19:16:05 +0000 | [diff] [blame] | 1025 | case kARGB_4444_Config: |
| 1026 | return sameConfigs || kARGB_8888_Config == this->config(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1027 | default: |
| 1028 | return false; |
| 1029 | } |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1030 | return true; |
| 1031 | } |
| 1032 | |
| 1033 | bool SkBitmap::copyTo(SkBitmap* dst, Config dstConfig, Allocator* alloc) const { |
| 1034 | if (!this->canCopyTo(dstConfig)) { |
| 1035 | return false; |
| 1036 | } |
| 1037 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1038 | // if we have a texture, first get those pixels |
| 1039 | SkBitmap tmpSrc; |
| 1040 | const SkBitmap* src = this; |
| 1041 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1042 | if (fPixelRef) { |
| 1043 | SkIRect subset; |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1044 | subset.setXYWH(fPixelRefOrigin.fX, fPixelRefOrigin.fY, fWidth, fHeight); |
| 1045 | if (fPixelRef->readPixels(&tmpSrc, &subset)) { |
| 1046 | SkASSERT(tmpSrc.width() == this->width()); |
| 1047 | SkASSERT(tmpSrc.height() == this->height()); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1048 | |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1049 | // did we get lucky and we can just return tmpSrc? |
| 1050 | if (tmpSrc.config() == dstConfig && NULL == alloc) { |
| 1051 | dst->swap(tmpSrc); |
scroggo@google.com | 5ccae2c | 2014-01-15 16:56:52 +0000 | [diff] [blame] | 1052 | // If the result is an exact copy, clone the gen ID. |
| 1053 | if (dst->pixelRef() && dst->pixelRef()->info() == fPixelRef->info()) { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1054 | dst->pixelRef()->cloneGenID(*fPixelRef); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1055 | } |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1056 | return true; |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1057 | } |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1058 | |
| 1059 | // fall through to the raster case |
| 1060 | src = &tmpSrc; |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1061 | } |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1062 | } |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1063 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1064 | // we lock this now, since we may need its colortable |
| 1065 | SkAutoLockPixels srclock(*src); |
| 1066 | if (!src->readyToDraw()) { |
| 1067 | return false; |
| 1068 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1069 | |
scroggo@google.com | 5ccae2c | 2014-01-15 16:56:52 +0000 | [diff] [blame] | 1070 | // The only way to be readyToDraw is if fPixelRef is non NULL. |
| 1071 | SkASSERT(fPixelRef != NULL); |
| 1072 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1073 | SkBitmap tmpDst; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 1074 | tmpDst.setConfig(dstConfig, src->width(), src->height(), 0, |
| 1075 | src->alphaType()); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1076 | |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1077 | // allocate colortable if srcConfig == kIndex8_Config |
| 1078 | SkColorTable* ctable = (dstConfig == kIndex8_Config) ? |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1079 | new SkColorTable(*src->getColorTable()) : NULL; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1080 | SkAutoUnref au(ctable); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1081 | if (!tmpDst.allocPixels(alloc, ctable)) { |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1082 | return false; |
| 1083 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1084 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1085 | if (!tmpDst.readyToDraw()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1086 | // allocator/lock failed |
| 1087 | return false; |
| 1088 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1089 | |
scroggo@google.com | 5ccae2c | 2014-01-15 16:56:52 +0000 | [diff] [blame] | 1090 | // pixelRef must be non NULL or tmpDst.readyToDraw() would have |
| 1091 | // returned false. |
| 1092 | SkASSERT(tmpDst.pixelRef() != NULL); |
| 1093 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1094 | /* do memcpy for the same configs cases, else use drawing |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1095 | */ |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1096 | if (src->config() == dstConfig) { |
| 1097 | if (tmpDst.getSize() == src->getSize()) { |
| 1098 | memcpy(tmpDst.getPixels(), src->getPixels(), src->getSafeSize()); |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1099 | SkPixelRef* pixelRef = tmpDst.pixelRef(); |
scroggo@google.com | 5ccae2c | 2014-01-15 16:56:52 +0000 | [diff] [blame] | 1100 | |
| 1101 | // In order to reach this point, we know that the width, config and |
| 1102 | // rowbytes of the SkPixelRefs are the same, but it is possible for |
| 1103 | // the heights to differ, if this SkBitmap's height is a subset of |
| 1104 | // fPixelRef. Only if the SkPixelRefs' heights match are we |
| 1105 | // guaranteed that this is an exact copy, meaning we should clone |
| 1106 | // the genID. |
| 1107 | if (pixelRef->info().fHeight == fPixelRef->info().fHeight) { |
| 1108 | // TODO: what to do if the two infos match, BUT |
| 1109 | // fPixelRef is premul and pixelRef is opaque? |
| 1110 | // skipping assert for now |
| 1111 | // https://code.google.com/p/skia/issues/detail?id=2012 |
| 1112 | // SkASSERT(pixelRef->info() == fPixelRef->info()); |
| 1113 | SkASSERT(pixelRef->info().fWidth == fPixelRef->info().fWidth); |
| 1114 | SkASSERT(pixelRef->info().fColorType == fPixelRef->info().fColorType); |
commit-bot@chromium.org | 50a3043 | 2013-10-24 17:44:27 +0000 | [diff] [blame] | 1115 | pixelRef->cloneGenID(*fPixelRef); |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1116 | } |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1117 | } else { |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1118 | const char* srcP = reinterpret_cast<const char*>(src->getPixels()); |
| 1119 | char* dstP = reinterpret_cast<char*>(tmpDst.getPixels()); |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1120 | // 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] | 1121 | size_t bytesToCopy = tmpDst.width() * tmpDst.bytesPerPixel(); |
| 1122 | for (int y = 0; y < tmpDst.height(); y++) { |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1123 | memcpy(dstP, srcP, bytesToCopy); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1124 | srcP += src->rowBytes(); |
| 1125 | dstP += tmpDst.rowBytes(); |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1126 | } |
| 1127 | } |
scroggo@google.com | 8dc8bc5 | 2013-08-07 19:16:05 +0000 | [diff] [blame] | 1128 | } else if (SkBitmap::kARGB_4444_Config == dstConfig |
| 1129 | && SkBitmap::kARGB_8888_Config == src->config()) { |
| 1130 | SkASSERT(src->height() == tmpDst.height()); |
| 1131 | SkASSERT(src->width() == tmpDst.width()); |
| 1132 | for (int y = 0; y < src->height(); ++y) { |
| 1133 | SkPMColor16* SK_RESTRICT dstRow = (SkPMColor16*) tmpDst.getAddr16(0, y); |
| 1134 | SkPMColor* SK_RESTRICT srcRow = (SkPMColor*) src->getAddr32(0, y); |
| 1135 | DITHER_4444_SCAN(y); |
| 1136 | for (int x = 0; x < src->width(); ++x) { |
| 1137 | dstRow[x] = SkDitherARGB32To4444(srcRow[x], |
| 1138 | DITHER_VALUE(x)); |
| 1139 | } |
| 1140 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1141 | } else { |
robertphillips@google.com | 0197b32 | 2013-10-10 15:48:16 +0000 | [diff] [blame] | 1142 | // Always clear the dest in case one of the blitters accesses it |
| 1143 | // TODO: switch the allocation of tmpDst to call sk_calloc_throw |
| 1144 | tmpDst.eraseColor(SK_ColorTRANSPARENT); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1145 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1146 | SkCanvas canvas(tmpDst); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1147 | SkPaint paint; |
| 1148 | |
| 1149 | paint.setDither(true); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1150 | canvas.drawBitmap(*src, 0, 0, &paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1151 | } |
| 1152 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1153 | dst->swap(tmpDst); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1154 | return true; |
| 1155 | } |
| 1156 | |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 1157 | bool SkBitmap::deepCopyTo(SkBitmap* dst, Config dstConfig) const { |
| 1158 | if (!this->canCopyTo(dstConfig)) { |
| 1159 | return false; |
| 1160 | } |
| 1161 | |
| 1162 | // If we have a PixelRef, and it supports deep copy, use it. |
| 1163 | // Currently supported only by texture-backed bitmaps. |
| 1164 | if (fPixelRef) { |
| 1165 | SkPixelRef* pixelRef = fPixelRef->deepCopy(dstConfig); |
| 1166 | if (pixelRef) { |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1167 | uint32_t rowBytes; |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1168 | if (dstConfig == fConfig) { |
scroggo@google.com | 5ccae2c | 2014-01-15 16:56:52 +0000 | [diff] [blame] | 1169 | // Since there is no subset to pass to deepCopy, and deepCopy |
| 1170 | // succeeded, the new pixel ref must be identical. |
| 1171 | SkASSERT(fPixelRef->info() == pixelRef->info()); |
commit-bot@chromium.org | 50a3043 | 2013-10-24 17:44:27 +0000 | [diff] [blame] | 1172 | pixelRef->cloneGenID(*fPixelRef); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1173 | // Use the same rowBytes as the original. |
| 1174 | rowBytes = fRowBytes; |
| 1175 | } else { |
| 1176 | // With the new config, an appropriate fRowBytes will be computed by setConfig. |
| 1177 | rowBytes = 0; |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1178 | } |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1179 | dst->setConfig(dstConfig, fWidth, fHeight, rowBytes); |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1180 | dst->setPixelRef(pixelRef, fPixelRefOrigin)->unref(); |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 1181 | return true; |
| 1182 | } |
| 1183 | } |
| 1184 | |
| 1185 | if (this->getTexture()) { |
| 1186 | return false; |
| 1187 | } else { |
| 1188 | return this->copyTo(dst, dstConfig, NULL); |
| 1189 | } |
| 1190 | } |
| 1191 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1192 | /////////////////////////////////////////////////////////////////////////////// |
| 1193 | /////////////////////////////////////////////////////////////////////////////// |
| 1194 | |
| 1195 | static void downsampleby2_proc32(SkBitmap* dst, int x, int y, |
| 1196 | const SkBitmap& src) { |
| 1197 | x <<= 1; |
| 1198 | y <<= 1; |
| 1199 | const SkPMColor* p = src.getAddr32(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1200 | const SkPMColor* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1201 | SkPMColor c, ag, rb; |
| 1202 | |
| 1203 | c = *p; ag = (c >> 8) & 0xFF00FF; rb = c & 0xFF00FF; |
| 1204 | if (x < src.width() - 1) { |
| 1205 | p += 1; |
| 1206 | } |
| 1207 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1208 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1209 | p = baseP; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1210 | if (y < src.height() - 1) { |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1211 | p += src.rowBytes() >> 2; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1212 | } |
| 1213 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1214 | if (x < src.width() - 1) { |
| 1215 | p += 1; |
| 1216 | } |
| 1217 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1218 | |
| 1219 | *dst->getAddr32(x >> 1, y >> 1) = |
| 1220 | ((rb >> 2) & 0xFF00FF) | ((ag << 6) & 0xFF00FF00); |
| 1221 | } |
| 1222 | |
| 1223 | static inline uint32_t expand16(U16CPU c) { |
| 1224 | return (c & ~SK_G16_MASK_IN_PLACE) | ((c & SK_G16_MASK_IN_PLACE) << 16); |
| 1225 | } |
| 1226 | |
| 1227 | // returns dirt in the top 16bits, but we don't care, since we only |
| 1228 | // store the low 16bits. |
| 1229 | static inline U16CPU pack16(uint32_t c) { |
| 1230 | return (c & ~SK_G16_MASK_IN_PLACE) | ((c >> 16) & SK_G16_MASK_IN_PLACE); |
| 1231 | } |
| 1232 | |
| 1233 | static void downsampleby2_proc16(SkBitmap* dst, int x, int y, |
| 1234 | const SkBitmap& src) { |
| 1235 | x <<= 1; |
| 1236 | y <<= 1; |
| 1237 | const uint16_t* p = src.getAddr16(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1238 | const uint16_t* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1239 | SkPMColor c; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1240 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1241 | c = expand16(*p); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1242 | if (x < src.width() - 1) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1243 | p += 1; |
| 1244 | } |
| 1245 | c += expand16(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1246 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1247 | p = baseP; |
| 1248 | if (y < src.height() - 1) { |
| 1249 | p += src.rowBytes() >> 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1250 | } |
| 1251 | c += expand16(*p); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1252 | if (x < src.width() - 1) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1253 | p += 1; |
| 1254 | } |
| 1255 | c += expand16(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1256 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1257 | *dst->getAddr16(x >> 1, y >> 1) = (uint16_t)pack16(c >> 2); |
| 1258 | } |
| 1259 | |
| 1260 | static uint32_t expand4444(U16CPU c) { |
| 1261 | return (c & 0xF0F) | ((c & ~0xF0F) << 12); |
| 1262 | } |
| 1263 | |
| 1264 | static U16CPU collaps4444(uint32_t c) { |
| 1265 | return (c & 0xF0F) | ((c >> 12) & ~0xF0F); |
| 1266 | } |
| 1267 | |
| 1268 | static void downsampleby2_proc4444(SkBitmap* dst, int x, int y, |
| 1269 | const SkBitmap& src) { |
| 1270 | x <<= 1; |
| 1271 | y <<= 1; |
| 1272 | const uint16_t* p = src.getAddr16(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1273 | const uint16_t* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1274 | uint32_t c; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1275 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1276 | c = expand4444(*p); |
| 1277 | if (x < src.width() - 1) { |
| 1278 | p += 1; |
| 1279 | } |
| 1280 | c += expand4444(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1281 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1282 | p = baseP; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1283 | if (y < src.height() - 1) { |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1284 | p += src.rowBytes() >> 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1285 | } |
| 1286 | c += expand4444(*p); |
| 1287 | if (x < src.width() - 1) { |
| 1288 | p += 1; |
| 1289 | } |
| 1290 | c += expand4444(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1291 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1292 | *dst->getAddr16(x >> 1, y >> 1) = (uint16_t)collaps4444(c >> 2); |
| 1293 | } |
| 1294 | |
| 1295 | void SkBitmap::buildMipMap(bool forceRebuild) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1296 | if (forceRebuild) |
| 1297 | this->freeMipMap(); |
| 1298 | else if (fMipMap) |
| 1299 | return; // we're already built |
| 1300 | |
| 1301 | SkASSERT(NULL == fMipMap); |
| 1302 | |
| 1303 | void (*proc)(SkBitmap* dst, int x, int y, const SkBitmap& src); |
| 1304 | |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 1305 | const SkBitmap::Config config = this->config(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1306 | |
| 1307 | switch (config) { |
| 1308 | case kARGB_8888_Config: |
| 1309 | proc = downsampleby2_proc32; |
| 1310 | break; |
| 1311 | case kRGB_565_Config: |
| 1312 | proc = downsampleby2_proc16; |
| 1313 | break; |
| 1314 | case kARGB_4444_Config: |
| 1315 | proc = downsampleby2_proc4444; |
| 1316 | break; |
| 1317 | case kIndex8_Config: |
| 1318 | case kA8_Config: |
| 1319 | default: |
| 1320 | return; // don't build mipmaps for these configs |
| 1321 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 1322 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1323 | SkAutoLockPixels alp(*this); |
| 1324 | if (!this->readyToDraw()) { |
| 1325 | return; |
| 1326 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1327 | |
| 1328 | // whip through our loop to compute the exact size needed |
| 1329 | size_t size = 0; |
| 1330 | int maxLevels = 0; |
| 1331 | { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1332 | int width = this->width(); |
| 1333 | int height = this->height(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1334 | for (;;) { |
| 1335 | width >>= 1; |
| 1336 | height >>= 1; |
| 1337 | if (0 == width || 0 == height) { |
| 1338 | break; |
| 1339 | } |
| 1340 | size += ComputeRowBytes(config, width) * height; |
| 1341 | maxLevels += 1; |
| 1342 | } |
| 1343 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 1344 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1345 | // nothing to build |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1346 | if (0 == maxLevels) { |
| 1347 | return; |
| 1348 | } |
| 1349 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1350 | SkBitmap srcBM(*this); |
| 1351 | srcBM.lockPixels(); |
| 1352 | if (!srcBM.readyToDraw()) { |
| 1353 | return; |
| 1354 | } |
| 1355 | |
| 1356 | MipMap* mm = MipMap::Alloc(maxLevels, size); |
| 1357 | if (NULL == mm) { |
| 1358 | return; |
| 1359 | } |
| 1360 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1361 | MipLevel* level = mm->levels(); |
| 1362 | uint8_t* addr = (uint8_t*)mm->pixels(); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1363 | int width = this->width(); |
| 1364 | int height = this->height(); |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1365 | uint32_t rowBytes; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1366 | SkBitmap dstBM; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1367 | |
| 1368 | for (int i = 0; i < maxLevels; i++) { |
| 1369 | width >>= 1; |
| 1370 | height >>= 1; |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1371 | rowBytes = SkToU32(ComputeRowBytes(config, width)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1372 | |
| 1373 | level[i].fPixels = addr; |
reed@android.com | f459a49 | 2009-03-27 12:33:50 +0000 | [diff] [blame] | 1374 | level[i].fWidth = width; |
| 1375 | level[i].fHeight = height; |
reed@android.com | 49f0ff2 | 2009-03-19 21:52:42 +0000 | [diff] [blame] | 1376 | level[i].fRowBytes = rowBytes; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1377 | |
| 1378 | dstBM.setConfig(config, width, height, rowBytes); |
| 1379 | dstBM.setPixels(addr); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1380 | |
bungeman@google.com | 7cf0e9e | 2012-07-25 16:09:10 +0000 | [diff] [blame] | 1381 | srcBM.lockPixels(); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1382 | for (int y = 0; y < height; y++) { |
| 1383 | for (int x = 0; x < width; x++) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1384 | proc(&dstBM, x, y, srcBM); |
| 1385 | } |
| 1386 | } |
bungeman@google.com | 7cf0e9e | 2012-07-25 16:09:10 +0000 | [diff] [blame] | 1387 | srcBM.unlockPixels(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1388 | |
| 1389 | srcBM = dstBM; |
| 1390 | addr += height * rowBytes; |
| 1391 | } |
| 1392 | SkASSERT(addr == (uint8_t*)mm->pixels() + size); |
| 1393 | fMipMap = mm; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1394 | } |
| 1395 | |
| 1396 | bool SkBitmap::hasMipMap() const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1397 | return fMipMap != NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1398 | } |
| 1399 | |
| 1400 | int SkBitmap::extractMipLevel(SkBitmap* dst, SkFixed sx, SkFixed sy) { |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 1401 | if (NULL == fMipMap) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1402 | return 0; |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 1403 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1404 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1405 | int level = ComputeMipLevel(sx, sy) >> 16; |
| 1406 | SkASSERT(level >= 0); |
| 1407 | if (level <= 0) { |
| 1408 | return 0; |
| 1409 | } |
| 1410 | |
| 1411 | if (level >= fMipMap->fLevelCount) { |
| 1412 | level = fMipMap->fLevelCount - 1; |
| 1413 | } |
| 1414 | if (dst) { |
| 1415 | const MipLevel& mip = fMipMap->levels()[level - 1]; |
| 1416 | dst->setConfig((SkBitmap::Config)this->config(), |
| 1417 | mip.fWidth, mip.fHeight, mip.fRowBytes); |
| 1418 | dst->setPixels(mip.fPixels); |
| 1419 | } |
| 1420 | return level; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1421 | } |
| 1422 | |
| 1423 | SkFixed SkBitmap::ComputeMipLevel(SkFixed sx, SkFixed sy) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1424 | sx = SkAbs32(sx); |
| 1425 | sy = SkAbs32(sy); |
| 1426 | if (sx < sy) { |
| 1427 | sx = sy; |
| 1428 | } |
| 1429 | if (sx < SK_Fixed1) { |
| 1430 | return 0; |
| 1431 | } |
| 1432 | int clz = SkCLZ(sx); |
| 1433 | SkASSERT(clz >= 1 && clz <= 15); |
| 1434 | return SkIntToFixed(15 - clz) + ((unsigned)(sx << (clz + 1)) >> 16); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1435 | } |
| 1436 | |
| 1437 | /////////////////////////////////////////////////////////////////////////////// |
| 1438 | |
tomhudson@google.com | a87cd2a | 2011-06-15 16:50:27 +0000 | [diff] [blame] | 1439 | static bool GetBitmapAlpha(const SkBitmap& src, uint8_t* SK_RESTRICT alpha, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1440 | int alphaRowBytes) { |
| 1441 | SkASSERT(alpha != NULL); |
| 1442 | SkASSERT(alphaRowBytes >= src.width()); |
| 1443 | |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 1444 | SkBitmap::Config config = src.config(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1445 | int w = src.width(); |
| 1446 | int h = src.height(); |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1447 | size_t rb = src.rowBytes(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1448 | |
reed@android.com | 1cdcb51 | 2009-08-24 19:11:00 +0000 | [diff] [blame] | 1449 | SkAutoLockPixels alp(src); |
| 1450 | if (!src.readyToDraw()) { |
| 1451 | // zero out the alpha buffer and return |
| 1452 | while (--h >= 0) { |
| 1453 | memset(alpha, 0, w); |
| 1454 | alpha += alphaRowBytes; |
| 1455 | } |
| 1456 | return false; |
| 1457 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 1458 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1459 | if (SkBitmap::kA8_Config == config && !src.isOpaque()) { |
| 1460 | const uint8_t* s = src.getAddr8(0, 0); |
| 1461 | while (--h >= 0) { |
| 1462 | memcpy(alpha, s, w); |
| 1463 | s += rb; |
| 1464 | alpha += alphaRowBytes; |
| 1465 | } |
| 1466 | } else if (SkBitmap::kARGB_8888_Config == config && !src.isOpaque()) { |
| 1467 | const SkPMColor* SK_RESTRICT s = src.getAddr32(0, 0); |
| 1468 | while (--h >= 0) { |
| 1469 | for (int x = 0; x < w; x++) { |
| 1470 | alpha[x] = SkGetPackedA32(s[x]); |
| 1471 | } |
| 1472 | s = (const SkPMColor*)((const char*)s + rb); |
| 1473 | alpha += alphaRowBytes; |
| 1474 | } |
| 1475 | } else if (SkBitmap::kARGB_4444_Config == config && !src.isOpaque()) { |
| 1476 | const SkPMColor16* SK_RESTRICT s = src.getAddr16(0, 0); |
| 1477 | while (--h >= 0) { |
| 1478 | for (int x = 0; x < w; x++) { |
| 1479 | alpha[x] = SkPacked4444ToA32(s[x]); |
| 1480 | } |
| 1481 | s = (const SkPMColor16*)((const char*)s + rb); |
| 1482 | alpha += alphaRowBytes; |
| 1483 | } |
| 1484 | } else if (SkBitmap::kIndex8_Config == config && !src.isOpaque()) { |
| 1485 | SkColorTable* ct = src.getColorTable(); |
| 1486 | if (ct) { |
| 1487 | const SkPMColor* SK_RESTRICT table = ct->lockColors(); |
| 1488 | const uint8_t* SK_RESTRICT s = src.getAddr8(0, 0); |
| 1489 | while (--h >= 0) { |
| 1490 | for (int x = 0; x < w; x++) { |
| 1491 | alpha[x] = SkGetPackedA32(table[s[x]]); |
| 1492 | } |
| 1493 | s += rb; |
| 1494 | alpha += alphaRowBytes; |
| 1495 | } |
reed@google.com | 0a6151d | 2013-10-10 14:44:56 +0000 | [diff] [blame] | 1496 | ct->unlockColors(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1497 | } |
| 1498 | } else { // src is opaque, so just fill alpha[] with 0xFF |
| 1499 | memset(alpha, 0xFF, h * alphaRowBytes); |
| 1500 | } |
reed@android.com | 1cdcb51 | 2009-08-24 19:11:00 +0000 | [diff] [blame] | 1501 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1502 | } |
| 1503 | |
| 1504 | #include "SkPaint.h" |
| 1505 | #include "SkMaskFilter.h" |
| 1506 | #include "SkMatrix.h" |
| 1507 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1508 | bool SkBitmap::extractAlpha(SkBitmap* dst, const SkPaint* paint, |
djsollen@google.com | 57f4969 | 2011-02-23 20:46:31 +0000 | [diff] [blame] | 1509 | Allocator *allocator, SkIPoint* offset) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1510 | SkDEBUGCODE(this->validate();) |
| 1511 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1512 | SkBitmap tmpBitmap; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1513 | SkMatrix identity; |
| 1514 | SkMask srcM, dstM; |
| 1515 | |
| 1516 | srcM.fBounds.set(0, 0, this->width(), this->height()); |
| 1517 | srcM.fRowBytes = SkAlign4(this->width()); |
| 1518 | srcM.fFormat = SkMask::kA8_Format; |
| 1519 | |
| 1520 | SkMaskFilter* filter = paint ? paint->getMaskFilter() : NULL; |
| 1521 | |
| 1522 | // compute our (larger?) dst bounds if we have a filter |
| 1523 | if (NULL != filter) { |
| 1524 | identity.reset(); |
| 1525 | srcM.fImage = NULL; |
| 1526 | if (!filter->filterMask(&dstM, srcM, identity, NULL)) { |
| 1527 | goto NO_FILTER_CASE; |
| 1528 | } |
| 1529 | dstM.fRowBytes = SkAlign4(dstM.fBounds.width()); |
| 1530 | } else { |
| 1531 | NO_FILTER_CASE: |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1532 | tmpBitmap.setConfig(SkBitmap::kA8_Config, this->width(), this->height(), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1533 | srcM.fRowBytes); |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1534 | if (!tmpBitmap.allocPixels(allocator, NULL)) { |
| 1535 | // Allocation of pixels for alpha bitmap failed. |
| 1536 | SkDebugf("extractAlpha failed to allocate (%d,%d) alpha bitmap\n", |
| 1537 | tmpBitmap.width(), tmpBitmap.height()); |
| 1538 | return false; |
| 1539 | } |
| 1540 | GetBitmapAlpha(*this, tmpBitmap.getAddr8(0, 0), srcM.fRowBytes); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1541 | if (offset) { |
| 1542 | offset->set(0, 0); |
| 1543 | } |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1544 | tmpBitmap.swap(*dst); |
| 1545 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1546 | } |
bungeman@google.com | 02f5584 | 2011-10-04 21:25:00 +0000 | [diff] [blame] | 1547 | srcM.fImage = SkMask::AllocImage(srcM.computeImageSize()); |
| 1548 | SkAutoMaskFreeImage srcCleanup(srcM.fImage); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1549 | |
| 1550 | GetBitmapAlpha(*this, srcM.fImage, srcM.fRowBytes); |
| 1551 | if (!filter->filterMask(&dstM, srcM, identity, NULL)) { |
| 1552 | goto NO_FILTER_CASE; |
| 1553 | } |
bungeman@google.com | 02f5584 | 2011-10-04 21:25:00 +0000 | [diff] [blame] | 1554 | SkAutoMaskFreeImage dstCleanup(dstM.fImage); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1555 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1556 | tmpBitmap.setConfig(SkBitmap::kA8_Config, dstM.fBounds.width(), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1557 | dstM.fBounds.height(), dstM.fRowBytes); |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1558 | if (!tmpBitmap.allocPixels(allocator, NULL)) { |
| 1559 | // Allocation of pixels for alpha bitmap failed. |
| 1560 | SkDebugf("extractAlpha failed to allocate (%d,%d) alpha bitmap\n", |
| 1561 | tmpBitmap.width(), tmpBitmap.height()); |
| 1562 | return false; |
| 1563 | } |
| 1564 | memcpy(tmpBitmap.getPixels(), dstM.fImage, dstM.computeImageSize()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1565 | if (offset) { |
| 1566 | offset->set(dstM.fBounds.fLeft, dstM.fBounds.fTop); |
| 1567 | } |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1568 | SkDEBUGCODE(tmpBitmap.validate();) |
| 1569 | |
| 1570 | tmpBitmap.swap(*dst); |
| 1571 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1572 | } |
| 1573 | |
| 1574 | /////////////////////////////////////////////////////////////////////////////// |
| 1575 | |
| 1576 | enum { |
| 1577 | SERIALIZE_PIXELTYPE_NONE, |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 1578 | SERIALIZE_PIXELTYPE_REF_DATA |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1579 | }; |
| 1580 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1581 | void SkBitmap::flatten(SkFlattenableWriteBuffer& buffer) const { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1582 | buffer.writeInt(fWidth); |
| 1583 | buffer.writeInt(fHeight); |
| 1584 | buffer.writeInt(fRowBytes); |
| 1585 | buffer.writeInt(fConfig); |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 1586 | buffer.writeInt(fAlphaType); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1587 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1588 | if (fPixelRef) { |
djsollen@google.com | 5370cd9 | 2012-03-28 20:47:01 +0000 | [diff] [blame] | 1589 | if (fPixelRef->getFactory()) { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1590 | buffer.writeInt(SERIALIZE_PIXELTYPE_REF_DATA); |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1591 | buffer.writeInt(fPixelRefOrigin.fX); |
| 1592 | buffer.writeInt(fPixelRefOrigin.fY); |
djsollen@google.com | 5370cd9 | 2012-03-28 20:47:01 +0000 | [diff] [blame] | 1593 | buffer.writeFlattenable(fPixelRef); |
| 1594 | return; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1595 | } |
| 1596 | // if we get here, we can't record the pixels |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1597 | buffer.writeInt(SERIALIZE_PIXELTYPE_NONE); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1598 | } else { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1599 | buffer.writeInt(SERIALIZE_PIXELTYPE_NONE); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1600 | } |
| 1601 | } |
| 1602 | |
| 1603 | void SkBitmap::unflatten(SkFlattenableReadBuffer& buffer) { |
| 1604 | this->reset(); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1605 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1606 | int width = buffer.readInt(); |
| 1607 | int height = buffer.readInt(); |
| 1608 | int rowBytes = buffer.readInt(); |
commit-bot@chromium.org | c0b7e10 | 2013-10-23 17:06:21 +0000 | [diff] [blame] | 1609 | Config config = (Config)buffer.readInt(); |
| 1610 | SkAlphaType alphaType = (SkAlphaType)buffer.readInt(); |
| 1611 | buffer.validate((width >= 0) && (height >= 0) && (rowBytes >= 0) && |
| 1612 | SkIsValidConfig(config) && validate_alphaType(config, alphaType)); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1613 | |
commit-bot@chromium.org | c2e9db3 | 2013-12-06 20:14:46 +0000 | [diff] [blame] | 1614 | bool configIsValid = this->setConfig(config, width, height, rowBytes, alphaType); |
| 1615 | // Note : Using (fRowBytes >= (fWidth * fBytesPerPixel)) in the following test can create false |
| 1616 | // positives if the multiplication causes an integer overflow. Use the division instead. |
| 1617 | buffer.validate(configIsValid && (fBytesPerPixel > 0) && |
| 1618 | ((fRowBytes / fBytesPerPixel) >= fWidth)); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1619 | |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1620 | int reftype = buffer.readInt(); |
commit-bot@chromium.org | ce33d60 | 2013-11-25 21:46:31 +0000 | [diff] [blame] | 1621 | if (buffer.validate((SERIALIZE_PIXELTYPE_REF_DATA == reftype) || |
| 1622 | (SERIALIZE_PIXELTYPE_NONE == reftype))) { |
| 1623 | switch (reftype) { |
| 1624 | case SERIALIZE_PIXELTYPE_REF_DATA: { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1625 | SkIPoint origin; |
| 1626 | origin.fX = buffer.readInt(); |
| 1627 | origin.fY = buffer.readInt(); |
| 1628 | size_t offset = origin.fY * rowBytes + origin.fX * fBytesPerPixel; |
commit-bot@chromium.org | ce33d60 | 2013-11-25 21:46:31 +0000 | [diff] [blame] | 1629 | SkPixelRef* pr = buffer.readPixelRef(); |
commit-bot@chromium.org | cd3b15c | 2013-12-04 17:06:49 +0000 | [diff] [blame] | 1630 | if (!buffer.validate((NULL == pr) || |
| 1631 | (pr->getAllocatedSizeInBytes() >= (offset + this->getSafeSize())))) { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1632 | origin.setZero(); |
commit-bot@chromium.org | cd3b15c | 2013-12-04 17:06:49 +0000 | [diff] [blame] | 1633 | } |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1634 | SkSafeUnref(this->setPixelRef(pr, origin)); |
commit-bot@chromium.org | ce33d60 | 2013-11-25 21:46:31 +0000 | [diff] [blame] | 1635 | break; |
| 1636 | } |
| 1637 | case SERIALIZE_PIXELTYPE_NONE: |
| 1638 | break; |
| 1639 | default: |
| 1640 | SkDEBUGFAIL("unrecognized pixeltype in serialized data"); |
| 1641 | sk_throw(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1642 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1643 | } |
| 1644 | } |
| 1645 | |
| 1646 | /////////////////////////////////////////////////////////////////////////////// |
| 1647 | |
| 1648 | SkBitmap::RLEPixels::RLEPixels(int width, int height) { |
| 1649 | fHeight = height; |
commit-bot@chromium.org | 235002f | 2013-10-09 18:39:59 +0000 | [diff] [blame] | 1650 | fYPtrs = (uint8_t**)sk_calloc_throw(height * sizeof(uint8_t*)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1651 | } |
| 1652 | |
| 1653 | SkBitmap::RLEPixels::~RLEPixels() { |
| 1654 | sk_free(fYPtrs); |
| 1655 | } |
| 1656 | |
| 1657 | /////////////////////////////////////////////////////////////////////////////// |
| 1658 | |
| 1659 | #ifdef SK_DEBUG |
| 1660 | void SkBitmap::validate() const { |
| 1661 | SkASSERT(fConfig < kConfigCount); |
| 1662 | SkASSERT(fRowBytes >= (unsigned)ComputeRowBytes((Config)fConfig, fWidth)); |
scroggo@google.com | 8e990eb | 2013-06-14 15:55:56 +0000 | [diff] [blame] | 1663 | uint8_t allFlags = kImageIsOpaque_Flag | kImageIsVolatile_Flag | kImageIsImmutable_Flag; |
| 1664 | #ifdef SK_BUILD_FOR_ANDROID |
| 1665 | allFlags |= kHasHardwareMipMap_Flag; |
| 1666 | #endif |
| 1667 | SkASSERT(fFlags <= allFlags); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1668 | SkASSERT(fPixelLockCount >= 0); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1669 | SkASSERT((uint8_t)ComputeBytesPerPixel((Config)fConfig) == fBytesPerPixel); |
| 1670 | |
reed@google.com | 615316c | 2014-01-15 19:15:23 +0000 | [diff] [blame] | 1671 | if (fPixels) { |
| 1672 | SkASSERT(fPixelRef); |
| 1673 | SkASSERT(fPixelLockCount > 0); |
| 1674 | SkASSERT(fPixelRef->isLocked()); |
commit-bot@chromium.org | f7ba413 | 2014-01-16 15:47:06 +0000 | [diff] [blame] | 1675 | #if !defined(SK_SUPPORT_LEGACY_ONLOCKPIXELS) |
reed@google.com | 615316c | 2014-01-15 19:15:23 +0000 | [diff] [blame] | 1676 | SkASSERT(fPixelRef->rowBytes() == fRowBytes); |
commit-bot@chromium.org | f7ba413 | 2014-01-16 15:47:06 +0000 | [diff] [blame] | 1677 | #endif |
reed@google.com | 615316c | 2014-01-15 19:15:23 +0000 | [diff] [blame] | 1678 | SkASSERT(fPixelRefOrigin.fX >= 0); |
| 1679 | SkASSERT(fPixelRefOrigin.fY >= 0); |
| 1680 | SkASSERT(fPixelRef->info().fWidth >= (int)fWidth + fPixelRefOrigin.fX); |
| 1681 | SkASSERT(fPixelRef->info().fHeight >= (int)fHeight + fPixelRefOrigin.fY); |
commit-bot@chromium.org | f7ba413 | 2014-01-16 15:47:06 +0000 | [diff] [blame] | 1682 | #if !defined(SK_SUPPORT_LEGACY_ONLOCKPIXELS) |
reed@google.com | 615316c | 2014-01-15 19:15:23 +0000 | [diff] [blame] | 1683 | SkASSERT(fPixelRef->rowBytes() >= fWidth * fBytesPerPixel); |
commit-bot@chromium.org | f7ba413 | 2014-01-16 15:47:06 +0000 | [diff] [blame] | 1684 | #endif |
reed@google.com | 615316c | 2014-01-15 19:15:23 +0000 | [diff] [blame] | 1685 | } else { |
| 1686 | SkASSERT(NULL == fColorTable); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1687 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1688 | } |
| 1689 | #endif |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 1690 | |
| 1691 | #ifdef SK_DEVELOPER |
| 1692 | void SkBitmap::toString(SkString* str) const { |
| 1693 | |
| 1694 | static const char* gConfigNames[kConfigCount] = { |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 1695 | "NONE", "A8", "INDEX8", "565", "4444", "8888" |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 1696 | }; |
| 1697 | |
| 1698 | str->appendf("bitmap: ((%d, %d) %s", this->width(), this->height(), |
| 1699 | gConfigNames[this->config()]); |
| 1700 | |
| 1701 | str->append(" ("); |
| 1702 | if (this->isOpaque()) { |
| 1703 | str->append("opaque"); |
| 1704 | } else { |
| 1705 | str->append("transparent"); |
| 1706 | } |
| 1707 | if (this->isImmutable()) { |
| 1708 | str->append(", immutable"); |
| 1709 | } else { |
| 1710 | str->append(", not-immutable"); |
| 1711 | } |
| 1712 | str->append(")"); |
| 1713 | |
| 1714 | SkPixelRef* pr = this->pixelRef(); |
| 1715 | if (NULL == pr) { |
| 1716 | // show null or the explicit pixel address (rare) |
| 1717 | str->appendf(" pixels:%p", this->getPixels()); |
| 1718 | } else { |
| 1719 | const char* uri = pr->getURI(); |
| 1720 | if (NULL != uri) { |
| 1721 | str->appendf(" uri:\"%s\"", uri); |
| 1722 | } else { |
| 1723 | str->appendf(" pixelref:%p", pr); |
| 1724 | } |
| 1725 | } |
| 1726 | |
| 1727 | str->append(")"); |
| 1728 | } |
| 1729 | #endif |