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" |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 17 | #include "SkReadBuffer.h" |
| 18 | #include "SkWriteBuffer.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 19 | #include "SkPixelRef.h" |
| 20 | #include "SkThread.h" |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 21 | #include "SkUnPreMultiply.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 22 | #include "SkUtils.h" |
commit-bot@chromium.org | c0b7e10 | 2013-10-23 17:06:21 +0000 | [diff] [blame] | 23 | #include "SkValidationUtils.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 24 | #include "SkPackBits.h" |
| 25 | #include <new> |
| 26 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 27 | static bool reset_return_false(SkBitmap* bm) { |
| 28 | bm->reset(); |
| 29 | return false; |
| 30 | } |
| 31 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 32 | struct MipLevel { |
| 33 | void* fPixels; |
| 34 | uint32_t fRowBytes; |
reed@android.com | f459a49 | 2009-03-27 12:33:50 +0000 | [diff] [blame] | 35 | uint32_t fWidth, fHeight; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 36 | }; |
| 37 | |
| 38 | struct SkBitmap::MipMap : SkNoncopyable { |
| 39 | int32_t fRefCnt; |
| 40 | int fLevelCount; |
| 41 | // MipLevel fLevel[fLevelCount]; |
| 42 | // Pixels[] |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 43 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 44 | static MipMap* Alloc(int levelCount, size_t pixelSize) { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 45 | if (levelCount < 0) { |
| 46 | return NULL; |
| 47 | } |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 48 | int64_t size = (levelCount + 1) * sizeof(MipLevel); |
| 49 | size += sizeof(MipMap) + pixelSize; |
| 50 | if (!sk_64_isS32(size)) { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 51 | return NULL; |
| 52 | } |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 53 | MipMap* mm = (MipMap*)sk_malloc_throw(sk_64_asS32(size)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 54 | mm->fRefCnt = 1; |
| 55 | mm->fLevelCount = levelCount; |
| 56 | return mm; |
| 57 | } |
| 58 | |
| 59 | const MipLevel* levels() const { return (const MipLevel*)(this + 1); } |
| 60 | MipLevel* levels() { return (MipLevel*)(this + 1); } |
| 61 | |
| 62 | const void* pixels() const { return levels() + fLevelCount; } |
| 63 | void* pixels() { return levels() + fLevelCount; } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 64 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 65 | void ref() { |
| 66 | if (SK_MaxS32 == sk_atomic_inc(&fRefCnt)) { |
| 67 | sk_throw(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 68 | } |
| 69 | } |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 70 | void unref() { |
| 71 | SkASSERT(fRefCnt > 0); |
| 72 | if (sk_atomic_dec(&fRefCnt) == 1) { |
| 73 | sk_free(this); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 74 | } |
| 75 | } |
| 76 | }; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 77 | |
| 78 | /////////////////////////////////////////////////////////////////////////////// |
| 79 | /////////////////////////////////////////////////////////////////////////////// |
| 80 | |
| 81 | SkBitmap::SkBitmap() { |
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 | } |
| 84 | |
| 85 | SkBitmap::SkBitmap(const SkBitmap& src) { |
| 86 | SkDEBUGCODE(src.validate();) |
reed@android.com | 4516f47 | 2009-06-29 16:25:36 +0000 | [diff] [blame] | 87 | sk_bzero(this, sizeof(*this)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 88 | *this = src; |
| 89 | SkDEBUGCODE(this->validate();) |
| 90 | } |
| 91 | |
| 92 | SkBitmap::~SkBitmap() { |
| 93 | SkDEBUGCODE(this->validate();) |
| 94 | this->freePixels(); |
| 95 | } |
| 96 | |
| 97 | SkBitmap& SkBitmap::operator=(const SkBitmap& src) { |
| 98 | if (this != &src) { |
| 99 | this->freePixels(); |
| 100 | memcpy(this, &src, sizeof(src)); |
| 101 | |
| 102 | // inc src reference counts |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 103 | SkSafeRef(src.fPixelRef); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 104 | SkSafeRef(src.fMipMap); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 105 | |
| 106 | // we reset our locks if we get blown away |
| 107 | fPixelLockCount = 0; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 108 | |
reed@google.com | 5f62ed7 | 2014-01-15 19:59:45 +0000 | [diff] [blame] | 109 | if (fPixelRef) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 110 | // ignore the values from the memcpy |
| 111 | fPixels = NULL; |
| 112 | fColorTable = NULL; |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 113 | // Note that what to for genID is somewhat arbitrary. We have no |
| 114 | // way to track changes to raw pixels across multiple SkBitmaps. |
| 115 | // Would benefit from an SkRawPixelRef type created by |
| 116 | // setPixels. |
| 117 | // Just leave the memcpy'ed one but they'll get out of sync |
| 118 | // as soon either is modified. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 119 | } |
| 120 | } |
| 121 | |
| 122 | SkDEBUGCODE(this->validate();) |
| 123 | return *this; |
| 124 | } |
| 125 | |
| 126 | void SkBitmap::swap(SkBitmap& other) { |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 127 | SkTSwap(fColorTable, other.fColorTable); |
| 128 | SkTSwap(fPixelRef, other.fPixelRef); |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 129 | SkTSwap(fPixelRefOrigin, other.fPixelRefOrigin); |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 130 | SkTSwap(fPixelLockCount, other.fPixelLockCount); |
| 131 | SkTSwap(fMipMap, other.fMipMap); |
| 132 | SkTSwap(fPixels, other.fPixels); |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 133 | SkTSwap(fInfo, other.fInfo); |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 134 | SkTSwap(fRowBytes, other.fRowBytes); |
bsalomon@google.com | 586f48c | 2011-04-14 15:07:22 +0000 | [diff] [blame] | 135 | SkTSwap(fFlags, other.fFlags); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 136 | |
| 137 | SkDEBUGCODE(this->validate();) |
| 138 | } |
| 139 | |
| 140 | void SkBitmap::reset() { |
| 141 | this->freePixels(); |
reed@android.com | 4516f47 | 2009-06-29 16:25:36 +0000 | [diff] [blame] | 142 | sk_bzero(this, sizeof(*this)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 143 | } |
| 144 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 145 | SkBitmap::Config SkBitmap::config() const { |
| 146 | return SkColorTypeToBitmapConfig(fInfo.colorType()); |
| 147 | } |
| 148 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 149 | int SkBitmap::ComputeBytesPerPixel(SkBitmap::Config config) { |
| 150 | int bpp; |
| 151 | switch (config) { |
| 152 | case kNo_Config: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 153 | bpp = 0; // not applicable |
| 154 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 155 | case kA8_Config: |
| 156 | case kIndex8_Config: |
| 157 | bpp = 1; |
| 158 | break; |
| 159 | case kRGB_565_Config: |
| 160 | case kARGB_4444_Config: |
| 161 | bpp = 2; |
| 162 | break; |
| 163 | case kARGB_8888_Config: |
| 164 | bpp = 4; |
| 165 | break; |
| 166 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 167 | SkDEBUGFAIL("unknown config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 168 | bpp = 0; // error |
| 169 | break; |
| 170 | } |
| 171 | return bpp; |
| 172 | } |
| 173 | |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 174 | size_t SkBitmap::ComputeRowBytes(Config c, int width) { |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 175 | return SkColorTypeMinRowBytes(SkBitmapConfigToColorType(c), width); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 176 | } |
| 177 | |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 178 | int64_t SkBitmap::ComputeSize64(Config config, int width, int height) { |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 179 | SkColorType ct = SkBitmapConfigToColorType(config); |
| 180 | int64_t rowBytes = sk_64_mul(SkColorTypeBytesPerPixel(ct), width); |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 181 | return rowBytes * height; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | size_t SkBitmap::ComputeSize(Config c, int width, int height) { |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 185 | int64_t size = SkBitmap::ComputeSize64(c, width, height); |
| 186 | return sk_64_isS32(size) ? sk_64_asS32(size) : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 187 | } |
| 188 | |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 189 | int64_t SkBitmap::ComputeSafeSize64(Config config, |
| 190 | uint32_t width, |
| 191 | uint32_t height, |
| 192 | size_t rowBytes) { |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 193 | SkImageInfo info = SkImageInfo::Make(width, height, |
| 194 | SkBitmapConfigToColorType(config), |
| 195 | kPremul_SkAlphaType); |
| 196 | return info.getSafeSize64(rowBytes); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 197 | } |
| 198 | |
| 199 | size_t SkBitmap::ComputeSafeSize(Config config, |
| 200 | uint32_t width, |
| 201 | uint32_t height, |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 202 | size_t rowBytes) { |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 203 | int64_t safeSize = ComputeSafeSize64(config, width, height, rowBytes); |
| 204 | int32_t safeSize32 = (int32_t)safeSize; |
skia.committer@gmail.com | f5e1f63 | 2013-12-31 07:01:36 +0000 | [diff] [blame] | 205 | |
reed@google.com | 57212f9 | 2013-12-30 14:40:38 +0000 | [diff] [blame] | 206 | if (safeSize32 != safeSize) { |
| 207 | safeSize32 = 0; |
| 208 | } |
| 209 | return safeSize32; |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 210 | } |
| 211 | |
reed@google.com | 86b2e43 | 2012-03-15 21:17:03 +0000 | [diff] [blame] | 212 | void SkBitmap::getBounds(SkRect* bounds) const { |
| 213 | SkASSERT(bounds); |
| 214 | bounds->set(0, 0, |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 215 | SkIntToScalar(fInfo.fWidth), SkIntToScalar(fInfo.fHeight)); |
reed@google.com | 86b2e43 | 2012-03-15 21:17:03 +0000 | [diff] [blame] | 216 | } |
| 217 | |
reed@google.com | 80e1459 | 2012-03-16 14:58:07 +0000 | [diff] [blame] | 218 | void SkBitmap::getBounds(SkIRect* bounds) const { |
| 219 | SkASSERT(bounds); |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 220 | bounds->set(0, 0, fInfo.fWidth, fInfo.fHeight); |
reed@google.com | 80e1459 | 2012-03-16 14:58:07 +0000 | [diff] [blame] | 221 | } |
| 222 | |
reed@google.com | 86b2e43 | 2012-03-15 21:17:03 +0000 | [diff] [blame] | 223 | /////////////////////////////////////////////////////////////////////////////// |
| 224 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 225 | static bool validate_alphaType(SkColorType colorType, SkAlphaType alphaType, |
commit-bot@chromium.org | c0b7e10 | 2013-10-23 17:06:21 +0000 | [diff] [blame] | 226 | SkAlphaType* canonical = NULL) { |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 227 | switch (colorType) { |
| 228 | case kUnknown_SkColorType: |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 229 | alphaType = kIgnore_SkAlphaType; |
| 230 | break; |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 231 | case kAlpha_8_SkColorType: |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 232 | if (kUnpremul_SkAlphaType == alphaType) { |
| 233 | alphaType = kPremul_SkAlphaType; |
| 234 | } |
| 235 | // fall-through |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 236 | case kIndex_8_SkColorType: |
| 237 | case kARGB_4444_SkColorType: |
| 238 | case kRGBA_8888_SkColorType: |
| 239 | case kBGRA_8888_SkColorType: |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 240 | if (kIgnore_SkAlphaType == alphaType) { |
| 241 | return false; |
| 242 | } |
| 243 | break; |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 244 | case kRGB_565_SkColorType: |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 245 | alphaType = kOpaque_SkAlphaType; |
| 246 | break; |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 247 | default: |
| 248 | return false; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 249 | } |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 250 | if (canonical) { |
| 251 | *canonical = alphaType; |
| 252 | } |
| 253 | return true; |
| 254 | } |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 255 | |
commit-bot@chromium.org | d5414e5 | 2014-02-13 22:30:38 +0000 | [diff] [blame] | 256 | bool SkBitmap::setConfig(const SkImageInfo& origInfo, size_t rowBytes) { |
| 257 | SkImageInfo info = origInfo; |
| 258 | |
| 259 | if (!validate_alphaType(info.fColorType, info.fAlphaType, |
| 260 | &info.fAlphaType)) { |
| 261 | return reset_return_false(this); |
| 262 | } |
skia.committer@gmail.com | 02d6f54 | 2014-02-14 03:02:05 +0000 | [diff] [blame] | 263 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 264 | // require that rowBytes fit in 31bits |
| 265 | int64_t mrb = info.minRowBytes64(); |
| 266 | if ((int32_t)mrb != mrb) { |
| 267 | return reset_return_false(this); |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 268 | } |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 269 | if ((int64_t)rowBytes != (int32_t)rowBytes) { |
| 270 | return reset_return_false(this); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 271 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 272 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 273 | if (info.width() < 0 || info.height() < 0) { |
| 274 | return reset_return_false(this); |
| 275 | } |
| 276 | |
| 277 | if (kUnknown_SkColorType == info.colorType()) { |
| 278 | rowBytes = 0; |
| 279 | } else if (0 == rowBytes) { |
| 280 | rowBytes = (size_t)mrb; |
| 281 | } else if (rowBytes < info.minRowBytes()) { |
| 282 | return reset_return_false(this); |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 283 | } |
| 284 | |
| 285 | this->freePixels(); |
| 286 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 287 | fInfo = info; |
| 288 | fRowBytes = SkToU32(rowBytes); |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 289 | return true; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 290 | } |
| 291 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 292 | bool SkBitmap::setConfig(Config config, int width, int height, size_t rowBytes, |
| 293 | SkAlphaType alphaType) { |
| 294 | SkColorType ct = SkBitmapConfigToColorType(config); |
| 295 | return this->setConfig(SkImageInfo::Make(width, height, ct, alphaType), |
| 296 | rowBytes); |
commit-bot@chromium.org | 6e3e422 | 2013-11-06 10:08:30 +0000 | [diff] [blame] | 297 | } |
| 298 | |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 299 | bool SkBitmap::setAlphaType(SkAlphaType alphaType) { |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 300 | if (!validate_alphaType(fInfo.fColorType, alphaType, &alphaType)) { |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 301 | return false; |
| 302 | } |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 303 | if (fInfo.fAlphaType != alphaType) { |
| 304 | fInfo.fAlphaType = alphaType; |
commit-bot@chromium.org | 0e8d0d6 | 2014-01-27 15:41:07 +0000 | [diff] [blame] | 305 | if (fPixelRef) { |
reed@google.com | c1587f9 | 2014-01-28 16:05:39 +0000 | [diff] [blame] | 306 | fPixelRef->changeAlphaType(alphaType); |
commit-bot@chromium.org | 0e8d0d6 | 2014-01-27 15:41:07 +0000 | [diff] [blame] | 307 | } |
| 308 | } |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 309 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 310 | } |
| 311 | |
| 312 | void SkBitmap::updatePixelsFromRef() const { |
| 313 | if (NULL != fPixelRef) { |
| 314 | if (fPixelLockCount > 0) { |
reed@google.com | ff0da4f | 2012-05-17 13:14:52 +0000 | [diff] [blame] | 315 | SkASSERT(fPixelRef->isLocked()); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 316 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 317 | void* p = fPixelRef->pixels(); |
| 318 | if (NULL != p) { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 319 | p = (char*)p |
reed@google.com | 303c475 | 2014-01-09 20:00:14 +0000 | [diff] [blame] | 320 | + fPixelRefOrigin.fY * fRowBytes |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 321 | + fPixelRefOrigin.fX * fInfo.bytesPerPixel(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 322 | } |
| 323 | fPixels = p; |
reed@google.com | 5f62ed7 | 2014-01-15 19:59:45 +0000 | [diff] [blame] | 324 | fColorTable = fPixelRef->colorTable(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 325 | } else { |
| 326 | SkASSERT(0 == fPixelLockCount); |
| 327 | fPixels = NULL; |
reed@google.com | 5f62ed7 | 2014-01-15 19:59:45 +0000 | [diff] [blame] | 328 | fColorTable = NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 329 | } |
| 330 | } |
| 331 | } |
| 332 | |
reed@google.com | 9230ea2 | 2013-12-09 22:01:03 +0000 | [diff] [blame] | 333 | static bool config_to_colorType(SkBitmap::Config config, SkColorType* ctOut) { |
| 334 | SkColorType ct; |
| 335 | switch (config) { |
| 336 | case SkBitmap::kA8_Config: |
| 337 | ct = kAlpha_8_SkColorType; |
| 338 | break; |
| 339 | case SkBitmap::kIndex8_Config: |
| 340 | ct = kIndex_8_SkColorType; |
| 341 | break; |
| 342 | case SkBitmap::kRGB_565_Config: |
| 343 | ct = kRGB_565_SkColorType; |
| 344 | break; |
| 345 | case SkBitmap::kARGB_4444_Config: |
| 346 | ct = kARGB_4444_SkColorType; |
| 347 | break; |
| 348 | case SkBitmap::kARGB_8888_Config: |
commit-bot@chromium.org | 28fcae2 | 2014-04-11 17:15:40 +0000 | [diff] [blame] | 349 | ct = kN32_SkColorType; |
reed@google.com | 9230ea2 | 2013-12-09 22:01:03 +0000 | [diff] [blame] | 350 | break; |
| 351 | case SkBitmap::kNo_Config: |
| 352 | default: |
| 353 | return false; |
| 354 | } |
| 355 | if (ctOut) { |
| 356 | *ctOut = ct; |
| 357 | } |
| 358 | return true; |
| 359 | } |
| 360 | |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 361 | SkPixelRef* SkBitmap::setPixelRef(SkPixelRef* pr, int dx, int dy) { |
reed@google.com | dcea530 | 2014-01-03 13:43:01 +0000 | [diff] [blame] | 362 | #ifdef SK_DEBUG |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 363 | if (pr) { |
reed@google.com | dcea530 | 2014-01-03 13:43:01 +0000 | [diff] [blame] | 364 | SkImageInfo info; |
| 365 | if (this->asImageInfo(&info)) { |
| 366 | const SkImageInfo& prInfo = pr->info(); |
| 367 | SkASSERT(info.fWidth <= prInfo.fWidth); |
| 368 | SkASSERT(info.fHeight <= prInfo.fHeight); |
| 369 | SkASSERT(info.fColorType == prInfo.fColorType); |
| 370 | switch (prInfo.fAlphaType) { |
| 371 | case kIgnore_SkAlphaType: |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 372 | SkASSERT(fInfo.fAlphaType == kIgnore_SkAlphaType); |
reed@google.com | dcea530 | 2014-01-03 13:43:01 +0000 | [diff] [blame] | 373 | break; |
| 374 | case kOpaque_SkAlphaType: |
| 375 | case kPremul_SkAlphaType: |
| 376 | SkASSERT(info.fAlphaType == kOpaque_SkAlphaType || |
| 377 | info.fAlphaType == kPremul_SkAlphaType); |
| 378 | break; |
| 379 | case kUnpremul_SkAlphaType: |
| 380 | SkASSERT(info.fAlphaType == kOpaque_SkAlphaType || |
| 381 | info.fAlphaType == kUnpremul_SkAlphaType); |
| 382 | break; |
| 383 | } |
| 384 | } |
| 385 | } |
| 386 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 387 | |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 388 | if (pr) { |
| 389 | const SkImageInfo& info = pr->info(); |
| 390 | fPixelRefOrigin.set(SkPin32(dx, 0, info.fWidth), |
| 391 | SkPin32(dy, 0, info.fHeight)); |
| 392 | } else { |
| 393 | // ignore dx,dy if there is no pixelref |
| 394 | fPixelRefOrigin.setZero(); |
| 395 | } |
| 396 | |
| 397 | if (fPixelRef != pr) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 398 | if (fPixelRef != pr) { |
| 399 | this->freePixels(); |
| 400 | SkASSERT(NULL == fPixelRef); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 401 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 402 | SkSafeRef(pr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 403 | fPixelRef = pr; |
| 404 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 405 | this->updatePixelsFromRef(); |
| 406 | } |
| 407 | |
| 408 | SkDEBUGCODE(this->validate();) |
| 409 | return pr; |
| 410 | } |
| 411 | |
| 412 | void SkBitmap::lockPixels() const { |
djsollen@google.com | 7c6d264 | 2013-08-06 12:19:38 +0000 | [diff] [blame] | 413 | if (NULL != fPixelRef && 0 == sk_atomic_inc(&fPixelLockCount)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 414 | fPixelRef->lockPixels(); |
| 415 | this->updatePixelsFromRef(); |
| 416 | } |
| 417 | SkDEBUGCODE(this->validate();) |
| 418 | } |
| 419 | |
| 420 | void SkBitmap::unlockPixels() const { |
| 421 | SkASSERT(NULL == fPixelRef || fPixelLockCount > 0); |
| 422 | |
djsollen@google.com | 7c6d264 | 2013-08-06 12:19:38 +0000 | [diff] [blame] | 423 | if (NULL != fPixelRef && 1 == sk_atomic_dec(&fPixelLockCount)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 424 | fPixelRef->unlockPixels(); |
| 425 | this->updatePixelsFromRef(); |
| 426 | } |
| 427 | SkDEBUGCODE(this->validate();) |
| 428 | } |
| 429 | |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 430 | bool SkBitmap::lockPixelsAreWritable() const { |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 431 | return (fPixelRef) ? fPixelRef->lockPixelsAreWritable() : false; |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 432 | } |
| 433 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 434 | void SkBitmap::setPixels(void* p, SkColorTable* ctable) { |
reed@google.com | 8e1034e | 2012-07-30 13:16:35 +0000 | [diff] [blame] | 435 | if (NULL == p) { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 436 | this->setPixelRef(NULL); |
reed@google.com | 8e1034e | 2012-07-30 13:16:35 +0000 | [diff] [blame] | 437 | return; |
| 438 | } |
| 439 | |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 440 | SkImageInfo info; |
| 441 | if (!this->asImageInfo(&info)) { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 442 | this->setPixelRef(NULL); |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 443 | return; |
| 444 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 445 | |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 446 | SkPixelRef* pr = SkMallocPixelRef::NewDirect(info, p, fRowBytes, ctable); |
| 447 | if (NULL == pr) { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 448 | this->setPixelRef(NULL); |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 449 | return; |
| 450 | } |
| 451 | |
| 452 | this->setPixelRef(pr)->unref(); |
| 453 | |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 454 | // since we're already allocated, we lockPixels right away |
| 455 | this->lockPixels(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 456 | SkDEBUGCODE(this->validate();) |
| 457 | } |
| 458 | |
| 459 | bool SkBitmap::allocPixels(Allocator* allocator, SkColorTable* ctable) { |
| 460 | HeapAllocator stdalloc; |
skia.committer@gmail.com | d2ac07b | 2014-01-25 07:01:49 +0000 | [diff] [blame] | 461 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 462 | if (NULL == allocator) { |
| 463 | allocator = &stdalloc; |
| 464 | } |
| 465 | return allocator->allocPixelRef(this, ctable); |
| 466 | } |
| 467 | |
reed@google.com | 9ebcac5 | 2014-01-24 18:53:42 +0000 | [diff] [blame] | 468 | /////////////////////////////////////////////////////////////////////////////// |
| 469 | |
reed@google.com | 9ebcac5 | 2014-01-24 18:53:42 +0000 | [diff] [blame] | 470 | bool SkBitmap::allocPixels(const SkImageInfo& info, SkPixelRefFactory* factory, |
| 471 | SkColorTable* ctable) { |
| 472 | if (kIndex_8_SkColorType == info.fColorType && NULL == ctable) { |
| 473 | return reset_return_false(this); |
| 474 | } |
| 475 | if (!this->setConfig(info)) { |
| 476 | return reset_return_false(this); |
| 477 | } |
| 478 | |
| 479 | SkMallocPixelRef::PRFactory defaultFactory; |
| 480 | if (NULL == factory) { |
| 481 | factory = &defaultFactory; |
| 482 | } |
skia.committer@gmail.com | d2ac07b | 2014-01-25 07:01:49 +0000 | [diff] [blame] | 483 | |
reed@google.com | 9ebcac5 | 2014-01-24 18:53:42 +0000 | [diff] [blame] | 484 | SkPixelRef* pr = factory->create(info, ctable); |
| 485 | if (NULL == pr) { |
| 486 | return reset_return_false(this); |
| 487 | } |
| 488 | this->setPixelRef(pr)->unref(); |
| 489 | |
| 490 | // TODO: lockPixels could/should return bool or void*/NULL |
| 491 | this->lockPixels(); |
| 492 | if (NULL == this->getPixels()) { |
| 493 | return reset_return_false(this); |
| 494 | } |
| 495 | return true; |
| 496 | } |
| 497 | |
| 498 | bool SkBitmap::installPixels(const SkImageInfo& info, void* pixels, size_t rb, |
| 499 | void (*releaseProc)(void* addr, void* context), |
| 500 | void* context) { |
reed@google.com | c2d768c | 2014-02-05 21:02:35 +0000 | [diff] [blame] | 501 | if (!this->setConfig(info, rb)) { |
reed@google.com | 9ebcac5 | 2014-01-24 18:53:42 +0000 | [diff] [blame] | 502 | this->reset(); |
| 503 | return false; |
| 504 | } |
| 505 | |
| 506 | SkPixelRef* pr = SkMallocPixelRef::NewWithProc(info, rb, NULL, pixels, |
| 507 | releaseProc, context); |
| 508 | if (!pr) { |
| 509 | this->reset(); |
| 510 | return false; |
| 511 | } |
| 512 | |
| 513 | this->setPixelRef(pr)->unref(); |
mike@reedtribe.org | 6e58cf3 | 2014-02-16 20:54:21 +0000 | [diff] [blame] | 514 | |
| 515 | // since we're already allocated, we lockPixels right away |
| 516 | this->lockPixels(); |
mike@reedtribe.org | 6e58cf3 | 2014-02-16 20:54:21 +0000 | [diff] [blame] | 517 | SkDEBUGCODE(this->validate();) |
reed@google.com | 9ebcac5 | 2014-01-24 18:53:42 +0000 | [diff] [blame] | 518 | return true; |
| 519 | } |
| 520 | |
commit-bot@chromium.org | dac5225 | 2014-02-17 21:21:46 +0000 | [diff] [blame] | 521 | bool SkBitmap::installMaskPixels(const SkMask& mask) { |
| 522 | if (SkMask::kA8_Format != mask.fFormat) { |
| 523 | this->reset(); |
| 524 | return false; |
| 525 | } |
| 526 | return this->installPixels(SkImageInfo::MakeA8(mask.fBounds.width(), |
| 527 | mask.fBounds.height()), |
| 528 | mask.fImage, mask.fRowBytes); |
| 529 | } |
| 530 | |
reed@google.com | eb9a46c | 2014-01-25 16:46:20 +0000 | [diff] [blame] | 531 | bool SkBitmap::allocConfigPixels(Config config, int width, int height, |
| 532 | bool isOpaque) { |
| 533 | SkColorType ct; |
| 534 | if (!config_to_colorType(config, &ct)) { |
| 535 | return false; |
| 536 | } |
skia.committer@gmail.com | 33c749a | 2014-01-26 07:01:45 +0000 | [diff] [blame] | 537 | |
reed@google.com | eb9a46c | 2014-01-25 16:46:20 +0000 | [diff] [blame] | 538 | SkAlphaType at = isOpaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType; |
reed@google.com | eb9a46c | 2014-01-25 16:46:20 +0000 | [diff] [blame] | 539 | return this->allocPixels(SkImageInfo::Make(width, height, ct, at)); |
| 540 | } |
| 541 | |
| 542 | /////////////////////////////////////////////////////////////////////////////// |
| 543 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 544 | void SkBitmap::freePixels() { |
| 545 | // if we're gonna free the pixels, we certainly need to free the mipmap |
| 546 | this->freeMipMap(); |
| 547 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 548 | if (NULL != fPixelRef) { |
| 549 | if (fPixelLockCount > 0) { |
| 550 | fPixelRef->unlockPixels(); |
| 551 | } |
| 552 | fPixelRef->unref(); |
| 553 | fPixelRef = NULL; |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 554 | fPixelRefOrigin.setZero(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 555 | } |
| 556 | fPixelLockCount = 0; |
| 557 | fPixels = NULL; |
reed@google.com | 5f62ed7 | 2014-01-15 19:59:45 +0000 | [diff] [blame] | 558 | fColorTable = NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 559 | } |
| 560 | |
| 561 | void SkBitmap::freeMipMap() { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 562 | if (fMipMap) { |
| 563 | fMipMap->unref(); |
| 564 | fMipMap = NULL; |
| 565 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 566 | } |
| 567 | |
| 568 | uint32_t SkBitmap::getGenerationID() const { |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 569 | return (fPixelRef) ? fPixelRef->getGenerationID() : 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 570 | } |
| 571 | |
| 572 | void SkBitmap::notifyPixelsChanged() const { |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 573 | SkASSERT(!this->isImmutable()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 574 | if (fPixelRef) { |
| 575 | fPixelRef->notifyPixelsChanged(); |
| 576 | } |
| 577 | } |
| 578 | |
commit-bot@chromium.org | b8d00db | 2013-06-26 19:18:23 +0000 | [diff] [blame] | 579 | GrTexture* SkBitmap::getTexture() const { |
reed@android.com | ce4e53a | 2010-09-09 16:01:26 +0000 | [diff] [blame] | 580 | return fPixelRef ? fPixelRef->getTexture() : NULL; |
| 581 | } |
| 582 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 583 | /////////////////////////////////////////////////////////////////////////////// |
| 584 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 585 | /** We explicitly use the same allocator for our pixels that SkMask does, |
| 586 | so that we can freely assign memory allocated by one class to the other. |
| 587 | */ |
| 588 | bool SkBitmap::HeapAllocator::allocPixelRef(SkBitmap* dst, |
| 589 | SkColorTable* ctable) { |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 590 | SkImageInfo info; |
| 591 | if (!dst->asImageInfo(&info)) { |
| 592 | // SkDebugf("unsupported config for info %d\n", dst->config()); |
| 593 | return false; |
| 594 | } |
skia.committer@gmail.com | 96f5fa0 | 2013-12-16 07:01:40 +0000 | [diff] [blame] | 595 | |
reed@google.com | bf79023 | 2013-12-13 19:45:58 +0000 | [diff] [blame] | 596 | SkPixelRef* pr = SkMallocPixelRef::NewAllocate(info, dst->rowBytes(), |
| 597 | ctable); |
| 598 | if (NULL == pr) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 599 | return false; |
| 600 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 601 | |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 602 | dst->setPixelRef(pr)->unref(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 603 | // since we're already allocated, we lockPixels right away |
| 604 | dst->lockPixels(); |
| 605 | return true; |
| 606 | } |
| 607 | |
| 608 | /////////////////////////////////////////////////////////////////////////////// |
| 609 | |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 610 | bool SkBitmap::copyPixelsTo(void* const dst, size_t dstSize, |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 611 | size_t dstRowBytes, bool preserveDstPad) const { |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 612 | |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 613 | if (0 == dstRowBytes) { |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 614 | dstRowBytes = fRowBytes; |
scroggo@google.com | 0ba4bf4 | 2013-02-25 16:02:36 +0000 | [diff] [blame] | 615 | } |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 616 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 617 | if (dstRowBytes < fInfo.minRowBytes() || |
| 618 | dst == NULL || (getPixels() == NULL && pixelRef() == NULL)) { |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 619 | return false; |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 620 | } |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 621 | |
bsalomon@google.com | c698097 | 2011-11-02 19:57:21 +0000 | [diff] [blame] | 622 | if (!preserveDstPad && static_cast<uint32_t>(dstRowBytes) == fRowBytes) { |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 623 | size_t safeSize = this->getSafeSize(); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 624 | if (safeSize > dstSize || safeSize == 0) |
| 625 | return false; |
| 626 | else { |
| 627 | SkAutoLockPixels lock(*this); |
| 628 | // This implementation will write bytes beyond the end of each row, |
| 629 | // excluding the last row, if the bitmap's stride is greater than |
| 630 | // strictly required by the current config. |
| 631 | memcpy(dst, getPixels(), safeSize); |
| 632 | |
| 633 | return true; |
| 634 | } |
| 635 | } else { |
| 636 | // If destination has different stride than us, then copy line by line. |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 637 | if (fInfo.getSafeSize(dstRowBytes) > dstSize) { |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 638 | return false; |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 639 | } else { |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 640 | // Just copy what we need on each line. |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 641 | size_t rowBytes = fInfo.minRowBytes(); |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 642 | SkAutoLockPixels lock(*this); |
| 643 | const uint8_t* srcP = reinterpret_cast<const uint8_t*>(getPixels()); |
| 644 | uint8_t* dstP = reinterpret_cast<uint8_t*>(dst); |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 645 | for (int row = 0; row < fInfo.fHeight; |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 646 | row++, srcP += fRowBytes, dstP += dstRowBytes) { |
| 647 | memcpy(dstP, srcP, rowBytes); |
| 648 | } |
| 649 | |
| 650 | return true; |
| 651 | } |
| 652 | } |
| 653 | } |
| 654 | |
wjmaclean@chromium.org | 86bff1f | 2010-11-16 20:22:41 +0000 | [diff] [blame] | 655 | /////////////////////////////////////////////////////////////////////////////// |
| 656 | |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 657 | bool SkBitmap::isImmutable() const { |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 658 | return fPixelRef ? fPixelRef->isImmutable() : |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 659 | fFlags & kImageIsImmutable_Flag; |
junov@chromium.org | b052129 | 2011-12-15 20:14:06 +0000 | [diff] [blame] | 660 | } |
| 661 | |
| 662 | void SkBitmap::setImmutable() { |
| 663 | if (fPixelRef) { |
| 664 | fPixelRef->setImmutable(); |
| 665 | } else { |
| 666 | fFlags |= kImageIsImmutable_Flag; |
| 667 | } |
| 668 | } |
| 669 | |
junov@google.com | 4ee7ae5 | 2011-06-30 17:30:49 +0000 | [diff] [blame] | 670 | bool SkBitmap::isVolatile() const { |
| 671 | return (fFlags & kImageIsVolatile_Flag) != 0; |
| 672 | } |
| 673 | |
| 674 | void SkBitmap::setIsVolatile(bool isVolatile) { |
| 675 | if (isVolatile) { |
| 676 | fFlags |= kImageIsVolatile_Flag; |
| 677 | } else { |
| 678 | fFlags &= ~kImageIsVolatile_Flag; |
| 679 | } |
| 680 | } |
| 681 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 682 | void* SkBitmap::getAddr(int x, int y) const { |
| 683 | SkASSERT((unsigned)x < (unsigned)this->width()); |
| 684 | SkASSERT((unsigned)y < (unsigned)this->height()); |
| 685 | |
| 686 | char* base = (char*)this->getPixels(); |
| 687 | if (base) { |
| 688 | base += y * this->rowBytes(); |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 689 | switch (this->colorType()) { |
| 690 | case kRGBA_8888_SkColorType: |
| 691 | case kBGRA_8888_SkColorType: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 692 | base += x << 2; |
| 693 | break; |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 694 | case kARGB_4444_SkColorType: |
| 695 | case kRGB_565_SkColorType: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 696 | base += x << 1; |
| 697 | break; |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 698 | case kAlpha_8_SkColorType: |
| 699 | case kIndex_8_SkColorType: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 700 | base += x; |
| 701 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 702 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 703 | SkDEBUGFAIL("Can't return addr for config"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 704 | base = NULL; |
| 705 | break; |
| 706 | } |
| 707 | } |
| 708 | return base; |
| 709 | } |
| 710 | |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 711 | SkColor SkBitmap::getColor(int x, int y) const { |
| 712 | SkASSERT((unsigned)x < (unsigned)this->width()); |
| 713 | SkASSERT((unsigned)y < (unsigned)this->height()); |
| 714 | |
| 715 | switch (this->config()) { |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 716 | case SkBitmap::kA8_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 717 | uint8_t* addr = this->getAddr8(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 718 | return SkColorSetA(0, addr[0]); |
| 719 | } |
| 720 | case SkBitmap::kIndex8_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 721 | SkPMColor c = this->getIndex8Color(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 722 | return SkUnPreMultiply::PMColorToColor(c); |
| 723 | } |
| 724 | case SkBitmap::kRGB_565_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 725 | uint16_t* addr = this->getAddr16(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 726 | return SkPixel16ToColor(addr[0]); |
| 727 | } |
| 728 | case SkBitmap::kARGB_4444_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 729 | uint16_t* addr = this->getAddr16(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 730 | SkPMColor c = SkPixel4444ToPixel32(addr[0]); |
| 731 | return SkUnPreMultiply::PMColorToColor(c); |
| 732 | } |
| 733 | case SkBitmap::kARGB_8888_Config: { |
reed@google.com | 3b521d0 | 2011-04-29 11:53:41 +0000 | [diff] [blame] | 734 | uint32_t* addr = this->getAddr32(x, y); |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 735 | return SkUnPreMultiply::PMColorToColor(addr[0]); |
| 736 | } |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 737 | case kNo_Config: |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 738 | default: |
vandebo@chromium.org | 112706d | 2011-02-24 22:50:55 +0000 | [diff] [blame] | 739 | SkASSERT(false); |
| 740 | return 0; |
| 741 | } |
| 742 | SkASSERT(false); // Not reached. |
| 743 | return 0; |
| 744 | } |
| 745 | |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 746 | bool SkBitmap::ComputeIsOpaque(const SkBitmap& bm) { |
| 747 | SkAutoLockPixels alp(bm); |
| 748 | if (!bm.getPixels()) { |
| 749 | return false; |
| 750 | } |
| 751 | |
| 752 | const int height = bm.height(); |
| 753 | const int width = bm.width(); |
| 754 | |
| 755 | switch (bm.config()) { |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 756 | case SkBitmap::kA8_Config: { |
| 757 | unsigned a = 0xFF; |
| 758 | for (int y = 0; y < height; ++y) { |
| 759 | const uint8_t* row = bm.getAddr8(0, y); |
| 760 | for (int x = 0; x < width; ++x) { |
| 761 | a &= row[x]; |
| 762 | } |
| 763 | if (0xFF != a) { |
| 764 | return false; |
| 765 | } |
| 766 | } |
| 767 | return true; |
| 768 | } break; |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 769 | case SkBitmap::kIndex8_Config: { |
| 770 | SkAutoLockColors alc(bm); |
| 771 | const SkPMColor* table = alc.colors(); |
| 772 | if (!table) { |
| 773 | return false; |
| 774 | } |
reed@google.com | 140d728 | 2013-01-07 20:25:04 +0000 | [diff] [blame] | 775 | SkPMColor c = (SkPMColor)~0; |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 776 | for (int i = bm.getColorTable()->count() - 1; i >= 0; --i) { |
| 777 | c &= table[i]; |
| 778 | } |
| 779 | return 0xFF == SkGetPackedA32(c); |
| 780 | } break; |
| 781 | case SkBitmap::kRGB_565_Config: |
| 782 | return true; |
| 783 | break; |
| 784 | case SkBitmap::kARGB_4444_Config: { |
| 785 | unsigned c = 0xFFFF; |
| 786 | for (int y = 0; y < height; ++y) { |
| 787 | const SkPMColor16* row = bm.getAddr16(0, y); |
| 788 | for (int x = 0; x < width; ++x) { |
| 789 | c &= row[x]; |
| 790 | } |
| 791 | if (0xF != SkGetPackedA4444(c)) { |
| 792 | return false; |
| 793 | } |
| 794 | } |
| 795 | return true; |
| 796 | } break; |
| 797 | case SkBitmap::kARGB_8888_Config: { |
reed@google.com | 140d728 | 2013-01-07 20:25:04 +0000 | [diff] [blame] | 798 | SkPMColor c = (SkPMColor)~0; |
reed@google.com | 2a7579d | 2012-11-07 18:30:18 +0000 | [diff] [blame] | 799 | for (int y = 0; y < height; ++y) { |
| 800 | const SkPMColor* row = bm.getAddr32(0, y); |
| 801 | for (int x = 0; x < width; ++x) { |
| 802 | c &= row[x]; |
| 803 | } |
| 804 | if (0xFF != SkGetPackedA32(c)) { |
| 805 | return false; |
| 806 | } |
| 807 | } |
| 808 | return true; |
| 809 | } |
| 810 | default: |
| 811 | break; |
| 812 | } |
| 813 | return false; |
| 814 | } |
| 815 | |
| 816 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 817 | /////////////////////////////////////////////////////////////////////////////// |
| 818 | /////////////////////////////////////////////////////////////////////////////// |
| 819 | |
reed@google.com | 45f746f | 2013-06-21 19:51:31 +0000 | [diff] [blame] | 820 | static uint16_t pack_8888_to_4444(unsigned a, unsigned r, unsigned g, unsigned b) { |
| 821 | unsigned pixel = (SkA32To4444(a) << SK_A4444_SHIFT) | |
| 822 | (SkR32To4444(r) << SK_R4444_SHIFT) | |
| 823 | (SkG32To4444(g) << SK_G4444_SHIFT) | |
| 824 | (SkB32To4444(b) << SK_B4444_SHIFT); |
| 825 | return SkToU16(pixel); |
| 826 | } |
| 827 | |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 828 | void SkBitmap::internalErase(const SkIRect& area, |
| 829 | U8CPU a, U8CPU r, U8CPU g, U8CPU b) const { |
| 830 | #ifdef SK_DEBUG |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 831 | SkDEBUGCODE(this->validate();) |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 832 | SkASSERT(!area.isEmpty()); |
| 833 | { |
reed@google.com | 92833f9 | 2013-06-28 19:47:43 +0000 | [diff] [blame] | 834 | SkIRect total = { 0, 0, this->width(), this->height() }; |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 835 | SkASSERT(total.contains(area)); |
| 836 | } |
| 837 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 838 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 839 | switch (fInfo.colorType()) { |
| 840 | case kUnknown_SkColorType: |
| 841 | case kIndex_8_SkColorType: |
commit-bot@chromium.org | 7669a77 | 2014-03-27 15:30:35 +0000 | [diff] [blame] | 842 | return; // can't erase. Should we bzero so the memory is not uninitialized? |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 843 | default: |
| 844 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 845 | } |
| 846 | |
| 847 | SkAutoLockPixels alp(*this); |
| 848 | // perform this check after the lock call |
| 849 | if (!this->readyToDraw()) { |
| 850 | return; |
| 851 | } |
| 852 | |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 853 | int height = area.height(); |
| 854 | const int width = area.width(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 855 | const int rowBytes = fRowBytes; |
| 856 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 857 | switch (this->colorType()) { |
| 858 | case kAlpha_8_SkColorType: { |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 859 | uint8_t* p = this->getAddr8(area.fLeft, area.fTop); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 860 | while (--height >= 0) { |
| 861 | memset(p, a, width); |
| 862 | p += rowBytes; |
| 863 | } |
| 864 | break; |
| 865 | } |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 866 | case kARGB_4444_SkColorType: |
| 867 | case kRGB_565_SkColorType: { |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 868 | uint16_t* p = this->getAddr16(area.fLeft, area.fTop);; |
reed@google.com | 45f746f | 2013-06-21 19:51:31 +0000 | [diff] [blame] | 869 | uint16_t v; |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 870 | |
commit-bot@chromium.org | 7669a77 | 2014-03-27 15:30:35 +0000 | [diff] [blame] | 871 | // make rgb premultiplied |
| 872 | if (255 != a) { |
| 873 | r = SkAlphaMul(r, a); |
| 874 | g = SkAlphaMul(g, a); |
| 875 | b = SkAlphaMul(b, a); |
| 876 | } |
| 877 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 878 | if (kARGB_4444_SkColorType == this->colorType()) { |
reed@google.com | 45f746f | 2013-06-21 19:51:31 +0000 | [diff] [blame] | 879 | v = pack_8888_to_4444(a, r, g, b); |
| 880 | } else { |
| 881 | v = SkPackRGB16(r >> (8 - SK_R16_BITS), |
| 882 | g >> (8 - SK_G16_BITS), |
| 883 | b >> (8 - SK_B16_BITS)); |
| 884 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 885 | while (--height >= 0) { |
| 886 | sk_memset16(p, v, width); |
| 887 | p = (uint16_t*)((char*)p + rowBytes); |
| 888 | } |
| 889 | break; |
| 890 | } |
commit-bot@chromium.org | 7669a77 | 2014-03-27 15:30:35 +0000 | [diff] [blame] | 891 | case kBGRA_8888_SkColorType: |
| 892 | case kRGBA_8888_SkColorType: { |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 893 | uint32_t* p = this->getAddr32(area.fLeft, area.fTop); |
commit-bot@chromium.org | 7669a77 | 2014-03-27 15:30:35 +0000 | [diff] [blame] | 894 | |
| 895 | if (255 != a && kPremul_SkAlphaType == this->alphaType()) { |
| 896 | r = SkAlphaMul(r, a); |
| 897 | g = SkAlphaMul(g, a); |
| 898 | b = SkAlphaMul(b, a); |
| 899 | } |
| 900 | uint32_t v = kRGBA_8888_SkColorType == this->colorType() ? |
| 901 | SkPackARGB_as_RGBA(a, r, g, b) : SkPackARGB_as_BGRA(a, r, g, b); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 902 | |
| 903 | while (--height >= 0) { |
| 904 | sk_memset32(p, v, width); |
| 905 | p = (uint32_t*)((char*)p + rowBytes); |
| 906 | } |
| 907 | break; |
| 908 | } |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 909 | default: |
| 910 | return; // no change, so don't call notifyPixelsChanged() |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 911 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 912 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 913 | this->notifyPixelsChanged(); |
| 914 | } |
| 915 | |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 916 | 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] | 917 | SkIRect area = { 0, 0, this->width(), this->height() }; |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 918 | if (!area.isEmpty()) { |
| 919 | this->internalErase(area, a, r, g, b); |
| 920 | } |
| 921 | } |
| 922 | |
| 923 | void SkBitmap::eraseArea(const SkIRect& rect, SkColor c) const { |
reed@google.com | 92833f9 | 2013-06-28 19:47:43 +0000 | [diff] [blame] | 924 | SkIRect area = { 0, 0, this->width(), this->height() }; |
reed@google.com | 60d3235 | 2013-06-28 19:40:50 +0000 | [diff] [blame] | 925 | if (area.intersect(rect)) { |
| 926 | this->internalErase(area, SkColorGetA(c), SkColorGetR(c), |
| 927 | SkColorGetG(c), SkColorGetB(c)); |
| 928 | } |
| 929 | } |
| 930 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 931 | ////////////////////////////////////////////////////////////////////////////////////// |
| 932 | ////////////////////////////////////////////////////////////////////////////////////// |
| 933 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 934 | bool SkBitmap::extractSubset(SkBitmap* result, const SkIRect& subset) const { |
| 935 | SkDEBUGCODE(this->validate();) |
| 936 | |
djsollen@google.com | c84b833 | 2012-07-27 13:41:44 +0000 | [diff] [blame] | 937 | if (NULL == result || NULL == fPixelRef) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 938 | return false; // no src pixels |
| 939 | } |
| 940 | |
| 941 | SkIRect srcRect, r; |
| 942 | srcRect.set(0, 0, this->width(), this->height()); |
| 943 | if (!r.intersect(srcRect, subset)) { |
| 944 | return false; // r is empty (i.e. no intersection) |
| 945 | } |
| 946 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 947 | if (fPixelRef->getTexture() != NULL) { |
| 948 | // Do a deep copy |
commit-bot@chromium.org | 6e332f7 | 2014-04-23 14:52:14 +0000 | [diff] [blame^] | 949 | SkPixelRef* pixelRef = fPixelRef->deepCopy(this->config(), &subset); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 950 | if (pixelRef != NULL) { |
| 951 | SkBitmap dst; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 952 | dst.setConfig(this->config(), subset.width(), subset.height(), 0, |
| 953 | this->alphaType()); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 954 | dst.setIsVolatile(this->isVolatile()); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 955 | dst.setPixelRef(pixelRef)->unref(); |
| 956 | SkDEBUGCODE(dst.validate()); |
| 957 | result->swap(dst); |
| 958 | return true; |
| 959 | } |
| 960 | } |
| 961 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 962 | // If the upper left of the rectangle was outside the bounds of this SkBitmap, we should have |
| 963 | // exited above. |
| 964 | SkASSERT(static_cast<unsigned>(r.fLeft) < static_cast<unsigned>(this->width())); |
| 965 | SkASSERT(static_cast<unsigned>(r.fTop) < static_cast<unsigned>(this->height())); |
| 966 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 967 | SkBitmap dst; |
reed@google.com | 383a697 | 2013-10-21 14:00:07 +0000 | [diff] [blame] | 968 | dst.setConfig(this->config(), r.width(), r.height(), this->rowBytes(), |
| 969 | this->alphaType()); |
skyostil@google.com | 0eb7576 | 2012-01-16 10:45:53 +0000 | [diff] [blame] | 970 | dst.setIsVolatile(this->isVolatile()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 971 | |
| 972 | if (fPixelRef) { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 973 | SkIPoint origin = fPixelRefOrigin; |
| 974 | origin.fX += r.fLeft; |
| 975 | origin.fY += r.fTop; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 976 | // share the pixelref with a custom offset |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 977 | dst.setPixelRef(fPixelRef, origin); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 978 | } |
| 979 | SkDEBUGCODE(dst.validate();) |
| 980 | |
| 981 | // we know we're good, so commit to result |
| 982 | result->swap(dst); |
| 983 | return true; |
| 984 | } |
| 985 | |
| 986 | /////////////////////////////////////////////////////////////////////////////// |
| 987 | |
| 988 | #include "SkCanvas.h" |
| 989 | #include "SkPaint.h" |
| 990 | |
commit-bot@chromium.org | 8a2ad3c | 2014-02-23 03:59:35 +0000 | [diff] [blame] | 991 | bool SkBitmap::canCopyTo(SkColorType dstColorType) const { |
| 992 | if (this->colorType() == kUnknown_SkColorType) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 993 | return false; |
| 994 | } |
| 995 | |
commit-bot@chromium.org | 8a2ad3c | 2014-02-23 03:59:35 +0000 | [diff] [blame] | 996 | bool sameConfigs = (this->colorType() == dstColorType); |
| 997 | switch (dstColorType) { |
| 998 | case kAlpha_8_SkColorType: |
| 999 | case kRGB_565_SkColorType: |
commit-bot@chromium.org | 60b5dce | 2014-04-22 20:24:33 +0000 | [diff] [blame] | 1000 | case kRGBA_8888_SkColorType: |
| 1001 | case kBGRA_8888_SkColorType: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1002 | break; |
commit-bot@chromium.org | 8a2ad3c | 2014-02-23 03:59:35 +0000 | [diff] [blame] | 1003 | case kIndex_8_SkColorType: |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1004 | if (!sameConfigs) { |
| 1005 | return false; |
| 1006 | } |
| 1007 | break; |
commit-bot@chromium.org | 8a2ad3c | 2014-02-23 03:59:35 +0000 | [diff] [blame] | 1008 | case kARGB_4444_SkColorType: |
commit-bot@chromium.org | 28fcae2 | 2014-04-11 17:15:40 +0000 | [diff] [blame] | 1009 | return sameConfigs || kN32_SkColorType == this->colorType(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1010 | default: |
| 1011 | return false; |
| 1012 | } |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1013 | return true; |
| 1014 | } |
| 1015 | |
commit-bot@chromium.org | 8a2ad3c | 2014-02-23 03:59:35 +0000 | [diff] [blame] | 1016 | bool SkBitmap::copyTo(SkBitmap* dst, SkColorType dstColorType, |
| 1017 | Allocator* alloc) const { |
| 1018 | if (!this->canCopyTo(dstColorType)) { |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1019 | return false; |
| 1020 | } |
| 1021 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1022 | // if we have a texture, first get those pixels |
| 1023 | SkBitmap tmpSrc; |
| 1024 | const SkBitmap* src = this; |
| 1025 | |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1026 | if (fPixelRef) { |
| 1027 | SkIRect subset; |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 1028 | subset.setXYWH(fPixelRefOrigin.fX, fPixelRefOrigin.fY, |
| 1029 | fInfo.width(), fInfo.height()); |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1030 | if (fPixelRef->readPixels(&tmpSrc, &subset)) { |
| 1031 | SkASSERT(tmpSrc.width() == this->width()); |
| 1032 | SkASSERT(tmpSrc.height() == this->height()); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1033 | |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1034 | // did we get lucky and we can just return tmpSrc? |
commit-bot@chromium.org | 8a2ad3c | 2014-02-23 03:59:35 +0000 | [diff] [blame] | 1035 | if (tmpSrc.colorType() == dstColorType && NULL == alloc) { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1036 | dst->swap(tmpSrc); |
scroggo@google.com | 5ccae2c | 2014-01-15 16:56:52 +0000 | [diff] [blame] | 1037 | // If the result is an exact copy, clone the gen ID. |
| 1038 | if (dst->pixelRef() && dst->pixelRef()->info() == fPixelRef->info()) { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1039 | dst->pixelRef()->cloneGenID(*fPixelRef); |
scroggo@google.com | a2a3192 | 2012-12-07 19:14:45 +0000 | [diff] [blame] | 1040 | } |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1041 | return true; |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1042 | } |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1043 | |
| 1044 | // fall through to the raster case |
| 1045 | src = &tmpSrc; |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1046 | } |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1047 | } |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1048 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1049 | // we lock this now, since we may need its colortable |
| 1050 | SkAutoLockPixels srclock(*src); |
| 1051 | if (!src->readyToDraw()) { |
| 1052 | return false; |
| 1053 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1054 | |
scroggo@google.com | 5ccae2c | 2014-01-15 16:56:52 +0000 | [diff] [blame] | 1055 | // The only way to be readyToDraw is if fPixelRef is non NULL. |
| 1056 | SkASSERT(fPixelRef != NULL); |
| 1057 | |
commit-bot@chromium.org | 8a2ad3c | 2014-02-23 03:59:35 +0000 | [diff] [blame] | 1058 | SkImageInfo dstInfo = src->info(); |
| 1059 | dstInfo.fColorType = dstColorType; |
| 1060 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1061 | SkBitmap tmpDst; |
commit-bot@chromium.org | 8a2ad3c | 2014-02-23 03:59:35 +0000 | [diff] [blame] | 1062 | if (!tmpDst.setConfig(dstInfo)) { |
| 1063 | return false; |
| 1064 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1065 | |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1066 | // allocate colortable if srcConfig == kIndex8_Config |
commit-bot@chromium.org | 8a2ad3c | 2014-02-23 03:59:35 +0000 | [diff] [blame] | 1067 | SkAutoTUnref<SkColorTable> ctable; |
| 1068 | if (dstColorType == kIndex_8_SkColorType) { |
| 1069 | // TODO: can we just ref() the src colortable? Is it reentrant-safe? |
| 1070 | ctable.reset(SkNEW_ARGS(SkColorTable, (*src->getColorTable()))); |
| 1071 | } |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1072 | if (!tmpDst.allocPixels(alloc, ctable)) { |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1073 | return false; |
| 1074 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1075 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1076 | if (!tmpDst.readyToDraw()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1077 | // allocator/lock failed |
| 1078 | return false; |
| 1079 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1080 | |
scroggo@google.com | 5ccae2c | 2014-01-15 16:56:52 +0000 | [diff] [blame] | 1081 | // pixelRef must be non NULL or tmpDst.readyToDraw() would have |
| 1082 | // returned false. |
| 1083 | SkASSERT(tmpDst.pixelRef() != NULL); |
| 1084 | |
reed@android.com | fbaa88d | 2009-05-06 17:44:34 +0000 | [diff] [blame] | 1085 | /* do memcpy for the same configs cases, else use drawing |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1086 | */ |
commit-bot@chromium.org | 8a2ad3c | 2014-02-23 03:59:35 +0000 | [diff] [blame] | 1087 | if (src->colorType() == dstColorType) { |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1088 | if (tmpDst.getSize() == src->getSize()) { |
| 1089 | memcpy(tmpDst.getPixels(), src->getPixels(), src->getSafeSize()); |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1090 | SkPixelRef* pixelRef = tmpDst.pixelRef(); |
scroggo@google.com | 5ccae2c | 2014-01-15 16:56:52 +0000 | [diff] [blame] | 1091 | |
| 1092 | // In order to reach this point, we know that the width, config and |
| 1093 | // rowbytes of the SkPixelRefs are the same, but it is possible for |
| 1094 | // the heights to differ, if this SkBitmap's height is a subset of |
| 1095 | // fPixelRef. Only if the SkPixelRefs' heights match are we |
| 1096 | // guaranteed that this is an exact copy, meaning we should clone |
| 1097 | // the genID. |
| 1098 | if (pixelRef->info().fHeight == fPixelRef->info().fHeight) { |
| 1099 | // TODO: what to do if the two infos match, BUT |
| 1100 | // fPixelRef is premul and pixelRef is opaque? |
| 1101 | // skipping assert for now |
| 1102 | // https://code.google.com/p/skia/issues/detail?id=2012 |
| 1103 | // SkASSERT(pixelRef->info() == fPixelRef->info()); |
| 1104 | SkASSERT(pixelRef->info().fWidth == fPixelRef->info().fWidth); |
| 1105 | SkASSERT(pixelRef->info().fColorType == fPixelRef->info().fColorType); |
commit-bot@chromium.org | 50a3043 | 2013-10-24 17:44:27 +0000 | [diff] [blame] | 1106 | pixelRef->cloneGenID(*fPixelRef); |
scroggo@google.com | d5764e8 | 2012-08-22 15:00:05 +0000 | [diff] [blame] | 1107 | } |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1108 | } else { |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1109 | const char* srcP = reinterpret_cast<const char*>(src->getPixels()); |
| 1110 | char* dstP = reinterpret_cast<char*>(tmpDst.getPixels()); |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1111 | // 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] | 1112 | size_t bytesToCopy = tmpDst.width() * tmpDst.bytesPerPixel(); |
| 1113 | for (int y = 0; y < tmpDst.height(); y++) { |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1114 | memcpy(dstP, srcP, bytesToCopy); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1115 | srcP += src->rowBytes(); |
| 1116 | dstP += tmpDst.rowBytes(); |
reed@android.com | 311c82d | 2009-05-05 23:13:23 +0000 | [diff] [blame] | 1117 | } |
| 1118 | } |
commit-bot@chromium.org | 8a2ad3c | 2014-02-23 03:59:35 +0000 | [diff] [blame] | 1119 | } else if (kARGB_4444_SkColorType == dstColorType |
commit-bot@chromium.org | 28fcae2 | 2014-04-11 17:15:40 +0000 | [diff] [blame] | 1120 | && kN32_SkColorType == src->colorType()) { |
scroggo@google.com | 8dc8bc5 | 2013-08-07 19:16:05 +0000 | [diff] [blame] | 1121 | SkASSERT(src->height() == tmpDst.height()); |
| 1122 | SkASSERT(src->width() == tmpDst.width()); |
| 1123 | for (int y = 0; y < src->height(); ++y) { |
| 1124 | SkPMColor16* SK_RESTRICT dstRow = (SkPMColor16*) tmpDst.getAddr16(0, y); |
| 1125 | SkPMColor* SK_RESTRICT srcRow = (SkPMColor*) src->getAddr32(0, y); |
| 1126 | DITHER_4444_SCAN(y); |
| 1127 | for (int x = 0; x < src->width(); ++x) { |
| 1128 | dstRow[x] = SkDitherARGB32To4444(srcRow[x], |
| 1129 | DITHER_VALUE(x)); |
| 1130 | } |
| 1131 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1132 | } else { |
robertphillips@google.com | 0197b32 | 2013-10-10 15:48:16 +0000 | [diff] [blame] | 1133 | // Always clear the dest in case one of the blitters accesses it |
| 1134 | // TODO: switch the allocation of tmpDst to call sk_calloc_throw |
| 1135 | tmpDst.eraseColor(SK_ColorTRANSPARENT); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1136 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1137 | SkCanvas canvas(tmpDst); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1138 | SkPaint paint; |
| 1139 | |
| 1140 | paint.setDither(true); |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1141 | canvas.drawBitmap(*src, 0, 0, &paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1142 | } |
| 1143 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 1144 | dst->swap(tmpDst); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1145 | return true; |
| 1146 | } |
| 1147 | |
commit-bot@chromium.org | fab349c | 2014-03-05 02:34:58 +0000 | [diff] [blame] | 1148 | bool SkBitmap::deepCopyTo(SkBitmap* dst) const { |
commit-bot@chromium.org | 6e332f7 | 2014-04-23 14:52:14 +0000 | [diff] [blame^] | 1149 | const SkBitmap::Config dstConfig = this->config(); |
| 1150 | const SkColorType dstCT = SkBitmapConfigToColorType(dstConfig); |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 1151 | |
commit-bot@chromium.org | 8a2ad3c | 2014-02-23 03:59:35 +0000 | [diff] [blame] | 1152 | if (!this->canCopyTo(dstCT)) { |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 1153 | return false; |
| 1154 | } |
| 1155 | |
| 1156 | // If we have a PixelRef, and it supports deep copy, use it. |
| 1157 | // Currently supported only by texture-backed bitmaps. |
| 1158 | if (fPixelRef) { |
commit-bot@chromium.org | 6e332f7 | 2014-04-23 14:52:14 +0000 | [diff] [blame^] | 1159 | SkPixelRef* pixelRef = fPixelRef->deepCopy(dstConfig); |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 1160 | if (pixelRef) { |
commit-bot@chromium.org | 6e332f7 | 2014-04-23 14:52:14 +0000 | [diff] [blame^] | 1161 | uint32_t rowBytes; |
| 1162 | if (this->colorType() == dstCT) { |
| 1163 | // Since there is no subset to pass to deepCopy, and deepCopy |
| 1164 | // succeeded, the new pixel ref must be identical. |
| 1165 | SkASSERT(fPixelRef->info() == pixelRef->info()); |
| 1166 | pixelRef->cloneGenID(*fPixelRef); |
| 1167 | // Use the same rowBytes as the original. |
| 1168 | rowBytes = fRowBytes; |
| 1169 | } else { |
| 1170 | // With the new config, an appropriate fRowBytes will be computed by setConfig. |
| 1171 | rowBytes = 0; |
| 1172 | } |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 1173 | |
| 1174 | SkImageInfo info = fInfo; |
commit-bot@chromium.org | 6e332f7 | 2014-04-23 14:52:14 +0000 | [diff] [blame^] | 1175 | info.fColorType = dstCT; |
| 1176 | if (!dst->setConfig(info, rowBytes)) { |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 1177 | return false; |
| 1178 | } |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1179 | dst->setPixelRef(pixelRef, fPixelRefOrigin)->unref(); |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 1180 | return true; |
| 1181 | } |
| 1182 | } |
| 1183 | |
| 1184 | if (this->getTexture()) { |
| 1185 | return false; |
| 1186 | } else { |
commit-bot@chromium.org | 8a2ad3c | 2014-02-23 03:59:35 +0000 | [diff] [blame] | 1187 | return this->copyTo(dst, dstCT, NULL); |
senorblanco@chromium.org | ef843cd | 2011-12-02 19:11:17 +0000 | [diff] [blame] | 1188 | } |
| 1189 | } |
| 1190 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1191 | /////////////////////////////////////////////////////////////////////////////// |
| 1192 | /////////////////////////////////////////////////////////////////////////////// |
| 1193 | |
| 1194 | static void downsampleby2_proc32(SkBitmap* dst, int x, int y, |
| 1195 | const SkBitmap& src) { |
| 1196 | x <<= 1; |
| 1197 | y <<= 1; |
| 1198 | const SkPMColor* p = src.getAddr32(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1199 | const SkPMColor* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1200 | SkPMColor c, ag, rb; |
| 1201 | |
| 1202 | c = *p; ag = (c >> 8) & 0xFF00FF; rb = c & 0xFF00FF; |
| 1203 | if (x < src.width() - 1) { |
| 1204 | p += 1; |
| 1205 | } |
| 1206 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1207 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1208 | p = baseP; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1209 | if (y < src.height() - 1) { |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1210 | p += src.rowBytes() >> 2; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1211 | } |
| 1212 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1213 | if (x < src.width() - 1) { |
| 1214 | p += 1; |
| 1215 | } |
| 1216 | c = *p; ag += (c >> 8) & 0xFF00FF; rb += c & 0xFF00FF; |
| 1217 | |
| 1218 | *dst->getAddr32(x >> 1, y >> 1) = |
| 1219 | ((rb >> 2) & 0xFF00FF) | ((ag << 6) & 0xFF00FF00); |
| 1220 | } |
| 1221 | |
| 1222 | static inline uint32_t expand16(U16CPU c) { |
| 1223 | return (c & ~SK_G16_MASK_IN_PLACE) | ((c & SK_G16_MASK_IN_PLACE) << 16); |
| 1224 | } |
| 1225 | |
| 1226 | // returns dirt in the top 16bits, but we don't care, since we only |
| 1227 | // store the low 16bits. |
| 1228 | static inline U16CPU pack16(uint32_t c) { |
| 1229 | return (c & ~SK_G16_MASK_IN_PLACE) | ((c >> 16) & SK_G16_MASK_IN_PLACE); |
| 1230 | } |
| 1231 | |
| 1232 | static void downsampleby2_proc16(SkBitmap* dst, int x, int y, |
| 1233 | const SkBitmap& src) { |
| 1234 | x <<= 1; |
| 1235 | y <<= 1; |
| 1236 | const uint16_t* p = src.getAddr16(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1237 | const uint16_t* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1238 | SkPMColor c; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1239 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1240 | c = expand16(*p); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1241 | if (x < src.width() - 1) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1242 | p += 1; |
| 1243 | } |
| 1244 | c += expand16(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1245 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1246 | p = baseP; |
| 1247 | if (y < src.height() - 1) { |
| 1248 | p += src.rowBytes() >> 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1249 | } |
| 1250 | c += expand16(*p); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1251 | if (x < src.width() - 1) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1252 | p += 1; |
| 1253 | } |
| 1254 | c += expand16(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1255 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1256 | *dst->getAddr16(x >> 1, y >> 1) = (uint16_t)pack16(c >> 2); |
| 1257 | } |
| 1258 | |
| 1259 | static uint32_t expand4444(U16CPU c) { |
| 1260 | return (c & 0xF0F) | ((c & ~0xF0F) << 12); |
| 1261 | } |
| 1262 | |
| 1263 | static U16CPU collaps4444(uint32_t c) { |
| 1264 | return (c & 0xF0F) | ((c >> 12) & ~0xF0F); |
| 1265 | } |
| 1266 | |
| 1267 | static void downsampleby2_proc4444(SkBitmap* dst, int x, int y, |
| 1268 | const SkBitmap& src) { |
| 1269 | x <<= 1; |
| 1270 | y <<= 1; |
| 1271 | const uint16_t* p = src.getAddr16(x, y); |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1272 | const uint16_t* baseP = p; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1273 | uint32_t c; |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1274 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1275 | c = expand4444(*p); |
| 1276 | if (x < src.width() - 1) { |
| 1277 | p += 1; |
| 1278 | } |
| 1279 | c += expand4444(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1280 | |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1281 | p = baseP; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1282 | if (y < src.height() - 1) { |
reed@android.com | 829c83c | 2009-06-08 12:05:31 +0000 | [diff] [blame] | 1283 | p += src.rowBytes() >> 1; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1284 | } |
| 1285 | c += expand4444(*p); |
| 1286 | if (x < src.width() - 1) { |
| 1287 | p += 1; |
| 1288 | } |
| 1289 | c += expand4444(*p); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1290 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1291 | *dst->getAddr16(x >> 1, y >> 1) = (uint16_t)collaps4444(c >> 2); |
| 1292 | } |
| 1293 | |
| 1294 | void SkBitmap::buildMipMap(bool forceRebuild) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1295 | if (forceRebuild) |
| 1296 | this->freeMipMap(); |
| 1297 | else if (fMipMap) |
| 1298 | return; // we're already built |
| 1299 | |
| 1300 | SkASSERT(NULL == fMipMap); |
| 1301 | |
| 1302 | void (*proc)(SkBitmap* dst, int x, int y, const SkBitmap& src); |
| 1303 | |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 1304 | const SkBitmap::Config config = this->config(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1305 | |
| 1306 | switch (config) { |
| 1307 | case kARGB_8888_Config: |
| 1308 | proc = downsampleby2_proc32; |
| 1309 | break; |
| 1310 | case kRGB_565_Config: |
| 1311 | proc = downsampleby2_proc16; |
| 1312 | break; |
| 1313 | case kARGB_4444_Config: |
| 1314 | proc = downsampleby2_proc4444; |
| 1315 | break; |
| 1316 | case kIndex8_Config: |
| 1317 | case kA8_Config: |
| 1318 | default: |
| 1319 | return; // don't build mipmaps for these configs |
| 1320 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 1321 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1322 | SkAutoLockPixels alp(*this); |
| 1323 | if (!this->readyToDraw()) { |
| 1324 | return; |
| 1325 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1326 | |
| 1327 | // whip through our loop to compute the exact size needed |
| 1328 | size_t size = 0; |
| 1329 | int maxLevels = 0; |
| 1330 | { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1331 | int width = this->width(); |
| 1332 | int height = this->height(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1333 | for (;;) { |
| 1334 | width >>= 1; |
| 1335 | height >>= 1; |
| 1336 | if (0 == width || 0 == height) { |
| 1337 | break; |
| 1338 | } |
| 1339 | size += ComputeRowBytes(config, width) * height; |
| 1340 | maxLevels += 1; |
| 1341 | } |
| 1342 | } |
reed@android.com | 89bb83a | 2009-05-29 21:30:42 +0000 | [diff] [blame] | 1343 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1344 | // nothing to build |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1345 | if (0 == maxLevels) { |
| 1346 | return; |
| 1347 | } |
| 1348 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1349 | SkBitmap srcBM(*this); |
| 1350 | srcBM.lockPixels(); |
| 1351 | if (!srcBM.readyToDraw()) { |
| 1352 | return; |
| 1353 | } |
| 1354 | |
| 1355 | MipMap* mm = MipMap::Alloc(maxLevels, size); |
| 1356 | if (NULL == mm) { |
| 1357 | return; |
| 1358 | } |
| 1359 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1360 | MipLevel* level = mm->levels(); |
| 1361 | uint8_t* addr = (uint8_t*)mm->pixels(); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1362 | int width = this->width(); |
| 1363 | int height = this->height(); |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1364 | uint32_t rowBytes; |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1365 | SkBitmap dstBM; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1366 | |
| 1367 | for (int i = 0; i < maxLevels; i++) { |
| 1368 | width >>= 1; |
| 1369 | height >>= 1; |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1370 | rowBytes = SkToU32(ComputeRowBytes(config, width)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1371 | |
| 1372 | level[i].fPixels = addr; |
reed@android.com | f459a49 | 2009-03-27 12:33:50 +0000 | [diff] [blame] | 1373 | level[i].fWidth = width; |
| 1374 | level[i].fHeight = height; |
reed@android.com | 49f0ff2 | 2009-03-19 21:52:42 +0000 | [diff] [blame] | 1375 | level[i].fRowBytes = rowBytes; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1376 | |
| 1377 | dstBM.setConfig(config, width, height, rowBytes); |
| 1378 | dstBM.setPixels(addr); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1379 | |
bungeman@google.com | 7cf0e9e | 2012-07-25 16:09:10 +0000 | [diff] [blame] | 1380 | srcBM.lockPixels(); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 1381 | for (int y = 0; y < height; y++) { |
| 1382 | for (int x = 0; x < width; x++) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1383 | proc(&dstBM, x, y, srcBM); |
| 1384 | } |
| 1385 | } |
bungeman@google.com | 7cf0e9e | 2012-07-25 16:09:10 +0000 | [diff] [blame] | 1386 | srcBM.unlockPixels(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1387 | |
| 1388 | srcBM = dstBM; |
| 1389 | addr += height * rowBytes; |
| 1390 | } |
| 1391 | SkASSERT(addr == (uint8_t*)mm->pixels() + size); |
| 1392 | fMipMap = mm; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1393 | } |
| 1394 | |
| 1395 | bool SkBitmap::hasMipMap() const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1396 | return fMipMap != NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1397 | } |
| 1398 | |
| 1399 | int SkBitmap::extractMipLevel(SkBitmap* dst, SkFixed sx, SkFixed sy) { |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 1400 | if (NULL == fMipMap) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1401 | return 0; |
reed@android.com | 83f7bc3 | 2009-07-17 02:42:41 +0000 | [diff] [blame] | 1402 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1403 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1404 | int level = ComputeMipLevel(sx, sy) >> 16; |
| 1405 | SkASSERT(level >= 0); |
| 1406 | if (level <= 0) { |
| 1407 | return 0; |
| 1408 | } |
| 1409 | |
| 1410 | if (level >= fMipMap->fLevelCount) { |
| 1411 | level = fMipMap->fLevelCount - 1; |
| 1412 | } |
| 1413 | if (dst) { |
| 1414 | const MipLevel& mip = fMipMap->levels()[level - 1]; |
| 1415 | dst->setConfig((SkBitmap::Config)this->config(), |
| 1416 | mip.fWidth, mip.fHeight, mip.fRowBytes); |
| 1417 | dst->setPixels(mip.fPixels); |
| 1418 | } |
| 1419 | return level; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1420 | } |
| 1421 | |
| 1422 | SkFixed SkBitmap::ComputeMipLevel(SkFixed sx, SkFixed sy) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1423 | sx = SkAbs32(sx); |
| 1424 | sy = SkAbs32(sy); |
| 1425 | if (sx < sy) { |
| 1426 | sx = sy; |
| 1427 | } |
| 1428 | if (sx < SK_Fixed1) { |
| 1429 | return 0; |
| 1430 | } |
| 1431 | int clz = SkCLZ(sx); |
| 1432 | SkASSERT(clz >= 1 && clz <= 15); |
| 1433 | return SkIntToFixed(15 - clz) + ((unsigned)(sx << (clz + 1)) >> 16); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1434 | } |
| 1435 | |
| 1436 | /////////////////////////////////////////////////////////////////////////////// |
| 1437 | |
tomhudson@google.com | a87cd2a | 2011-06-15 16:50:27 +0000 | [diff] [blame] | 1438 | static bool GetBitmapAlpha(const SkBitmap& src, uint8_t* SK_RESTRICT alpha, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1439 | int alphaRowBytes) { |
| 1440 | SkASSERT(alpha != NULL); |
| 1441 | SkASSERT(alphaRowBytes >= src.width()); |
| 1442 | |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 1443 | SkBitmap::Config config = src.config(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1444 | int w = src.width(); |
| 1445 | int h = src.height(); |
scroggo@google.com | e5f4824 | 2013-02-25 21:47:41 +0000 | [diff] [blame] | 1446 | size_t rb = src.rowBytes(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1447 | |
reed@android.com | 1cdcb51 | 2009-08-24 19:11:00 +0000 | [diff] [blame] | 1448 | SkAutoLockPixels alp(src); |
| 1449 | if (!src.readyToDraw()) { |
| 1450 | // zero out the alpha buffer and return |
| 1451 | while (--h >= 0) { |
| 1452 | memset(alpha, 0, w); |
| 1453 | alpha += alphaRowBytes; |
| 1454 | } |
| 1455 | return false; |
| 1456 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 1457 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1458 | if (SkBitmap::kA8_Config == config && !src.isOpaque()) { |
| 1459 | const uint8_t* s = src.getAddr8(0, 0); |
| 1460 | while (--h >= 0) { |
| 1461 | memcpy(alpha, s, w); |
| 1462 | s += rb; |
| 1463 | alpha += alphaRowBytes; |
| 1464 | } |
| 1465 | } else if (SkBitmap::kARGB_8888_Config == config && !src.isOpaque()) { |
| 1466 | const SkPMColor* SK_RESTRICT s = src.getAddr32(0, 0); |
| 1467 | while (--h >= 0) { |
| 1468 | for (int x = 0; x < w; x++) { |
| 1469 | alpha[x] = SkGetPackedA32(s[x]); |
| 1470 | } |
| 1471 | s = (const SkPMColor*)((const char*)s + rb); |
| 1472 | alpha += alphaRowBytes; |
| 1473 | } |
| 1474 | } else if (SkBitmap::kARGB_4444_Config == config && !src.isOpaque()) { |
| 1475 | const SkPMColor16* SK_RESTRICT s = src.getAddr16(0, 0); |
| 1476 | while (--h >= 0) { |
| 1477 | for (int x = 0; x < w; x++) { |
| 1478 | alpha[x] = SkPacked4444ToA32(s[x]); |
| 1479 | } |
| 1480 | s = (const SkPMColor16*)((const char*)s + rb); |
| 1481 | alpha += alphaRowBytes; |
| 1482 | } |
| 1483 | } else if (SkBitmap::kIndex8_Config == config && !src.isOpaque()) { |
| 1484 | SkColorTable* ct = src.getColorTable(); |
| 1485 | if (ct) { |
| 1486 | const SkPMColor* SK_RESTRICT table = ct->lockColors(); |
| 1487 | const uint8_t* SK_RESTRICT s = src.getAddr8(0, 0); |
| 1488 | while (--h >= 0) { |
| 1489 | for (int x = 0; x < w; x++) { |
| 1490 | alpha[x] = SkGetPackedA32(table[s[x]]); |
| 1491 | } |
| 1492 | s += rb; |
| 1493 | alpha += alphaRowBytes; |
| 1494 | } |
reed@google.com | 0a6151d | 2013-10-10 14:44:56 +0000 | [diff] [blame] | 1495 | ct->unlockColors(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1496 | } |
| 1497 | } else { // src is opaque, so just fill alpha[] with 0xFF |
| 1498 | memset(alpha, 0xFF, h * alphaRowBytes); |
| 1499 | } |
reed@android.com | 1cdcb51 | 2009-08-24 19:11:00 +0000 | [diff] [blame] | 1500 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1501 | } |
| 1502 | |
| 1503 | #include "SkPaint.h" |
| 1504 | #include "SkMaskFilter.h" |
| 1505 | #include "SkMatrix.h" |
| 1506 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1507 | bool SkBitmap::extractAlpha(SkBitmap* dst, const SkPaint* paint, |
djsollen@google.com | 57f4969 | 2011-02-23 20:46:31 +0000 | [diff] [blame] | 1508 | Allocator *allocator, SkIPoint* offset) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1509 | SkDEBUGCODE(this->validate();) |
| 1510 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1511 | SkBitmap tmpBitmap; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1512 | SkMatrix identity; |
| 1513 | SkMask srcM, dstM; |
| 1514 | |
| 1515 | srcM.fBounds.set(0, 0, this->width(), this->height()); |
| 1516 | srcM.fRowBytes = SkAlign4(this->width()); |
| 1517 | srcM.fFormat = SkMask::kA8_Format; |
| 1518 | |
| 1519 | SkMaskFilter* filter = paint ? paint->getMaskFilter() : NULL; |
| 1520 | |
| 1521 | // compute our (larger?) dst bounds if we have a filter |
| 1522 | if (NULL != filter) { |
| 1523 | identity.reset(); |
| 1524 | srcM.fImage = NULL; |
| 1525 | if (!filter->filterMask(&dstM, srcM, identity, NULL)) { |
| 1526 | goto NO_FILTER_CASE; |
| 1527 | } |
| 1528 | dstM.fRowBytes = SkAlign4(dstM.fBounds.width()); |
| 1529 | } else { |
| 1530 | NO_FILTER_CASE: |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1531 | tmpBitmap.setConfig(SkBitmap::kA8_Config, this->width(), this->height(), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1532 | srcM.fRowBytes); |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1533 | if (!tmpBitmap.allocPixels(allocator, NULL)) { |
| 1534 | // Allocation of pixels for alpha bitmap failed. |
| 1535 | SkDebugf("extractAlpha failed to allocate (%d,%d) alpha bitmap\n", |
| 1536 | tmpBitmap.width(), tmpBitmap.height()); |
| 1537 | return false; |
| 1538 | } |
| 1539 | GetBitmapAlpha(*this, tmpBitmap.getAddr8(0, 0), srcM.fRowBytes); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1540 | if (offset) { |
| 1541 | offset->set(0, 0); |
| 1542 | } |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1543 | tmpBitmap.swap(*dst); |
| 1544 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1545 | } |
bungeman@google.com | 02f5584 | 2011-10-04 21:25:00 +0000 | [diff] [blame] | 1546 | srcM.fImage = SkMask::AllocImage(srcM.computeImageSize()); |
| 1547 | SkAutoMaskFreeImage srcCleanup(srcM.fImage); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1548 | |
| 1549 | GetBitmapAlpha(*this, srcM.fImage, srcM.fRowBytes); |
| 1550 | if (!filter->filterMask(&dstM, srcM, identity, NULL)) { |
| 1551 | goto NO_FILTER_CASE; |
| 1552 | } |
bungeman@google.com | 02f5584 | 2011-10-04 21:25:00 +0000 | [diff] [blame] | 1553 | SkAutoMaskFreeImage dstCleanup(dstM.fImage); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1554 | |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1555 | tmpBitmap.setConfig(SkBitmap::kA8_Config, dstM.fBounds.width(), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1556 | dstM.fBounds.height(), dstM.fRowBytes); |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1557 | if (!tmpBitmap.allocPixels(allocator, NULL)) { |
| 1558 | // Allocation of pixels for alpha bitmap failed. |
| 1559 | SkDebugf("extractAlpha failed to allocate (%d,%d) alpha bitmap\n", |
| 1560 | tmpBitmap.width(), tmpBitmap.height()); |
| 1561 | return false; |
| 1562 | } |
| 1563 | memcpy(tmpBitmap.getPixels(), dstM.fImage, dstM.computeImageSize()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1564 | if (offset) { |
| 1565 | offset->set(dstM.fBounds.fLeft, dstM.fBounds.fTop); |
| 1566 | } |
djsollen@google.com | cd9d69b | 2011-03-14 20:30:14 +0000 | [diff] [blame] | 1567 | SkDEBUGCODE(tmpBitmap.validate();) |
| 1568 | |
| 1569 | tmpBitmap.swap(*dst); |
| 1570 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1571 | } |
| 1572 | |
| 1573 | /////////////////////////////////////////////////////////////////////////////// |
| 1574 | |
| 1575 | enum { |
| 1576 | SERIALIZE_PIXELTYPE_NONE, |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 1577 | SERIALIZE_PIXELTYPE_REF_DATA |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1578 | }; |
| 1579 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 1580 | void SkBitmap::flatten(SkWriteBuffer& buffer) const { |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 1581 | fInfo.flatten(buffer); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1582 | buffer.writeInt(fRowBytes); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1583 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1584 | if (fPixelRef) { |
djsollen@google.com | 5370cd9 | 2012-03-28 20:47:01 +0000 | [diff] [blame] | 1585 | if (fPixelRef->getFactory()) { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1586 | buffer.writeInt(SERIALIZE_PIXELTYPE_REF_DATA); |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1587 | buffer.writeInt(fPixelRefOrigin.fX); |
| 1588 | buffer.writeInt(fPixelRefOrigin.fY); |
djsollen@google.com | 5370cd9 | 2012-03-28 20:47:01 +0000 | [diff] [blame] | 1589 | buffer.writeFlattenable(fPixelRef); |
| 1590 | return; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1591 | } |
| 1592 | // if we get here, we can't record the pixels |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1593 | buffer.writeInt(SERIALIZE_PIXELTYPE_NONE); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1594 | } else { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1595 | buffer.writeInt(SERIALIZE_PIXELTYPE_NONE); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1596 | } |
| 1597 | } |
| 1598 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 1599 | void SkBitmap::unflatten(SkReadBuffer& buffer) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1600 | this->reset(); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1601 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 1602 | SkImageInfo info; |
| 1603 | info.unflatten(buffer); |
| 1604 | size_t rowBytes = buffer.readInt(); |
commit-bot@chromium.org | 33fed14 | 2014-02-13 18:46:13 +0000 | [diff] [blame] | 1605 | if (!buffer.validate((info.width() >= 0) && (info.height() >= 0) && |
| 1606 | SkColorTypeIsValid(info.fColorType) && |
| 1607 | SkAlphaTypeIsValid(info.fAlphaType) && |
| 1608 | validate_alphaType(info.fColorType, info.fAlphaType) && |
| 1609 | info.validRowBytes(rowBytes))) { |
| 1610 | return; |
| 1611 | } |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1612 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 1613 | bool configIsValid = this->setConfig(info, rowBytes); |
| 1614 | buffer.validate(configIsValid); |
weita@google.com | f9ab99a | 2009-05-03 18:23:30 +0000 | [diff] [blame] | 1615 | |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 1616 | int reftype = buffer.readInt(); |
commit-bot@chromium.org | ce33d60 | 2013-11-25 21:46:31 +0000 | [diff] [blame] | 1617 | if (buffer.validate((SERIALIZE_PIXELTYPE_REF_DATA == reftype) || |
| 1618 | (SERIALIZE_PIXELTYPE_NONE == reftype))) { |
| 1619 | switch (reftype) { |
| 1620 | case SERIALIZE_PIXELTYPE_REF_DATA: { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1621 | SkIPoint origin; |
| 1622 | origin.fX = buffer.readInt(); |
| 1623 | origin.fY = buffer.readInt(); |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 1624 | size_t offset = origin.fY * rowBytes + origin.fX * info.bytesPerPixel(); |
commit-bot@chromium.org | ce33d60 | 2013-11-25 21:46:31 +0000 | [diff] [blame] | 1625 | SkPixelRef* pr = buffer.readPixelRef(); |
commit-bot@chromium.org | cd3b15c | 2013-12-04 17:06:49 +0000 | [diff] [blame] | 1626 | if (!buffer.validate((NULL == pr) || |
| 1627 | (pr->getAllocatedSizeInBytes() >= (offset + this->getSafeSize())))) { |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1628 | origin.setZero(); |
commit-bot@chromium.org | cd3b15c | 2013-12-04 17:06:49 +0000 | [diff] [blame] | 1629 | } |
reed@google.com | 672588b | 2014-01-08 15:42:01 +0000 | [diff] [blame] | 1630 | SkSafeUnref(this->setPixelRef(pr, origin)); |
commit-bot@chromium.org | ce33d60 | 2013-11-25 21:46:31 +0000 | [diff] [blame] | 1631 | break; |
| 1632 | } |
| 1633 | case SERIALIZE_PIXELTYPE_NONE: |
| 1634 | break; |
| 1635 | default: |
| 1636 | SkDEBUGFAIL("unrecognized pixeltype in serialized data"); |
| 1637 | sk_throw(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1638 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1639 | } |
| 1640 | } |
| 1641 | |
| 1642 | /////////////////////////////////////////////////////////////////////////////// |
| 1643 | |
| 1644 | SkBitmap::RLEPixels::RLEPixels(int width, int height) { |
| 1645 | fHeight = height; |
commit-bot@chromium.org | 235002f | 2013-10-09 18:39:59 +0000 | [diff] [blame] | 1646 | fYPtrs = (uint8_t**)sk_calloc_throw(height * sizeof(uint8_t*)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1647 | } |
| 1648 | |
| 1649 | SkBitmap::RLEPixels::~RLEPixels() { |
| 1650 | sk_free(fYPtrs); |
| 1651 | } |
| 1652 | |
| 1653 | /////////////////////////////////////////////////////////////////////////////// |
| 1654 | |
| 1655 | #ifdef SK_DEBUG |
| 1656 | void SkBitmap::validate() const { |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 1657 | fInfo.validate(); |
commit-bot@chromium.org | d5414e5 | 2014-02-13 22:30:38 +0000 | [diff] [blame] | 1658 | |
| 1659 | // ImageInfo may not require this, but Bitmap ensures that opaque-only |
| 1660 | // colorTypes report opaque for their alphatype |
| 1661 | if (kRGB_565_SkColorType == fInfo.colorType()) { |
| 1662 | SkASSERT(kOpaque_SkAlphaType == fInfo.alphaType()); |
| 1663 | } |
| 1664 | |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 1665 | SkASSERT(fInfo.validRowBytes(fRowBytes)); |
scroggo@google.com | 8e990eb | 2013-06-14 15:55:56 +0000 | [diff] [blame] | 1666 | uint8_t allFlags = kImageIsOpaque_Flag | kImageIsVolatile_Flag | kImageIsImmutable_Flag; |
| 1667 | #ifdef SK_BUILD_FOR_ANDROID |
| 1668 | allFlags |= kHasHardwareMipMap_Flag; |
| 1669 | #endif |
| 1670 | SkASSERT(fFlags <= allFlags); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1671 | SkASSERT(fPixelLockCount >= 0); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1672 | |
reed@google.com | 615316c | 2014-01-15 19:15:23 +0000 | [diff] [blame] | 1673 | if (fPixels) { |
| 1674 | SkASSERT(fPixelRef); |
| 1675 | SkASSERT(fPixelLockCount > 0); |
| 1676 | SkASSERT(fPixelRef->isLocked()); |
| 1677 | SkASSERT(fPixelRef->rowBytes() == fRowBytes); |
| 1678 | SkASSERT(fPixelRefOrigin.fX >= 0); |
| 1679 | SkASSERT(fPixelRefOrigin.fY >= 0); |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 1680 | SkASSERT(fPixelRef->info().width() >= (int)this->width() + fPixelRefOrigin.fX); |
| 1681 | SkASSERT(fPixelRef->info().fHeight >= (int)this->height() + fPixelRefOrigin.fY); |
| 1682 | SkASSERT(fPixelRef->rowBytes() >= fInfo.minRowBytes()); |
reed@google.com | 615316c | 2014-01-15 19:15:23 +0000 | [diff] [blame] | 1683 | } else { |
| 1684 | SkASSERT(NULL == fColorTable); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1685 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1686 | } |
| 1687 | #endif |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 1688 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1689 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 1690 | void SkBitmap::toString(SkString* str) const { |
| 1691 | |
| 1692 | static const char* gConfigNames[kConfigCount] = { |
rmistry@google.com | d6bab02 | 2013-12-02 13:50:38 +0000 | [diff] [blame] | 1693 | "NONE", "A8", "INDEX8", "565", "4444", "8888" |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 1694 | }; |
| 1695 | |
| 1696 | str->appendf("bitmap: ((%d, %d) %s", this->width(), this->height(), |
| 1697 | gConfigNames[this->config()]); |
| 1698 | |
| 1699 | str->append(" ("); |
| 1700 | if (this->isOpaque()) { |
| 1701 | str->append("opaque"); |
| 1702 | } else { |
| 1703 | str->append("transparent"); |
| 1704 | } |
| 1705 | if (this->isImmutable()) { |
| 1706 | str->append(", immutable"); |
| 1707 | } else { |
| 1708 | str->append(", not-immutable"); |
| 1709 | } |
| 1710 | str->append(")"); |
| 1711 | |
| 1712 | SkPixelRef* pr = this->pixelRef(); |
| 1713 | if (NULL == pr) { |
| 1714 | // show null or the explicit pixel address (rare) |
| 1715 | str->appendf(" pixels:%p", this->getPixels()); |
| 1716 | } else { |
| 1717 | const char* uri = pr->getURI(); |
| 1718 | if (NULL != uri) { |
| 1719 | str->appendf(" uri:\"%s\"", uri); |
| 1720 | } else { |
| 1721 | str->appendf(" pixelref:%p", pr); |
| 1722 | } |
| 1723 | } |
| 1724 | |
| 1725 | str->append(")"); |
| 1726 | } |
| 1727 | #endif |
commit-bot@chromium.org | 61e96cd | 2014-02-11 18:21:45 +0000 | [diff] [blame] | 1728 | |
| 1729 | /////////////////////////////////////////////////////////////////////////////// |
| 1730 | |
| 1731 | #ifdef SK_DEBUG |
| 1732 | void SkImageInfo::validate() const { |
| 1733 | SkASSERT(fWidth >= 0); |
| 1734 | SkASSERT(fHeight >= 0); |
| 1735 | SkASSERT(SkColorTypeIsValid(fColorType)); |
| 1736 | SkASSERT(SkAlphaTypeIsValid(fAlphaType)); |
| 1737 | } |
| 1738 | #endif |