djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 3 | * Copyright 2012 Google Inc. |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
| 8 | |
scroggo@google.com | f8d7d27 | 2013-02-22 21:38:35 +0000 | [diff] [blame] | 9 | #include "SkBitmap.h" |
scroggo@google.com | 49ce11b | 2013-04-25 18:29:32 +0000 | [diff] [blame] | 10 | #include "SkErrorInternals.h" |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 11 | #include "SkOrderedReadBuffer.h" |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 12 | #include "SkStream.h" |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 13 | #include "SkTypeface.h" |
| 14 | |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 15 | SkOrderedReadBuffer::SkOrderedReadBuffer() : INHERITED() { |
| 16 | fMemoryPtr = NULL; |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 17 | |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 18 | fBitmapStorage = NULL; |
| 19 | fTFArray = NULL; |
| 20 | fTFCount = 0; |
| 21 | |
| 22 | fFactoryTDArray = NULL; |
| 23 | fFactoryArray = NULL; |
| 24 | fFactoryCount = 0; |
scroggo@google.com | 5a7c6be | 2012-10-04 21:46:08 +0000 | [diff] [blame] | 25 | fBitmapDecoder = NULL; |
scroggo@google.com | c6e5fcb | 2013-07-08 22:00:17 +0000 | [diff] [blame^] | 26 | #ifdef DEBUG_NON_DETERMINISTIC_ASSERT |
| 27 | fDecodedBitmapIndex = -1; |
| 28 | #endif // DEBUG_NON_DETERMINISTIC_ASSERT |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 29 | } |
| 30 | |
| 31 | SkOrderedReadBuffer::SkOrderedReadBuffer(const void* data, size_t size) : INHERITED() { |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 32 | fReader.setMemory(data, size); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 33 | fMemoryPtr = NULL; |
| 34 | |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 35 | fBitmapStorage = NULL; |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 36 | fTFArray = NULL; |
| 37 | fTFCount = 0; |
| 38 | |
| 39 | fFactoryTDArray = NULL; |
| 40 | fFactoryArray = NULL; |
| 41 | fFactoryCount = 0; |
scroggo@google.com | 5a7c6be | 2012-10-04 21:46:08 +0000 | [diff] [blame] | 42 | fBitmapDecoder = NULL; |
scroggo@google.com | c6e5fcb | 2013-07-08 22:00:17 +0000 | [diff] [blame^] | 43 | #ifdef DEBUG_NON_DETERMINISTIC_ASSERT |
| 44 | fDecodedBitmapIndex = -1; |
| 45 | #endif // DEBUG_NON_DETERMINISTIC_ASSERT |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 46 | } |
| 47 | |
| 48 | SkOrderedReadBuffer::SkOrderedReadBuffer(SkStream* stream) { |
| 49 | const size_t length = stream->getLength(); |
| 50 | fMemoryPtr = sk_malloc_throw(length); |
| 51 | stream->read(fMemoryPtr, length); |
| 52 | fReader.setMemory(fMemoryPtr, length); |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 53 | |
| 54 | fBitmapStorage = NULL; |
| 55 | fTFArray = NULL; |
| 56 | fTFCount = 0; |
| 57 | |
| 58 | fFactoryTDArray = NULL; |
| 59 | fFactoryArray = NULL; |
| 60 | fFactoryCount = 0; |
scroggo@google.com | 5a7c6be | 2012-10-04 21:46:08 +0000 | [diff] [blame] | 61 | fBitmapDecoder = NULL; |
scroggo@google.com | c6e5fcb | 2013-07-08 22:00:17 +0000 | [diff] [blame^] | 62 | #ifdef DEBUG_NON_DETERMINISTIC_ASSERT |
| 63 | fDecodedBitmapIndex = -1; |
| 64 | #endif // DEBUG_NON_DETERMINISTIC_ASSERT |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 65 | } |
| 66 | |
| 67 | SkOrderedReadBuffer::~SkOrderedReadBuffer() { |
| 68 | sk_free(fMemoryPtr); |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 69 | SkSafeUnref(fBitmapStorage); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 70 | } |
| 71 | |
| 72 | bool SkOrderedReadBuffer::readBool() { |
| 73 | return fReader.readBool(); |
| 74 | } |
| 75 | |
| 76 | SkColor SkOrderedReadBuffer::readColor() { |
| 77 | return fReader.readInt(); |
| 78 | } |
| 79 | |
| 80 | SkFixed SkOrderedReadBuffer::readFixed() { |
| 81 | return fReader.readS32(); |
| 82 | } |
| 83 | |
| 84 | int32_t SkOrderedReadBuffer::readInt() { |
| 85 | return fReader.readInt(); |
| 86 | } |
| 87 | |
| 88 | SkScalar SkOrderedReadBuffer::readScalar() { |
| 89 | return fReader.readScalar(); |
| 90 | } |
| 91 | |
| 92 | uint32_t SkOrderedReadBuffer::readUInt() { |
| 93 | return fReader.readU32(); |
| 94 | } |
| 95 | |
| 96 | int32_t SkOrderedReadBuffer::read32() { |
| 97 | return fReader.readInt(); |
| 98 | } |
| 99 | |
djsollen@google.com | 7768751 | 2013-05-21 16:17:14 +0000 | [diff] [blame] | 100 | void SkOrderedReadBuffer::readString(SkString* string) { |
| 101 | size_t len; |
| 102 | const char* strContents = fReader.readString(&len); |
| 103 | string->set(strContents, len); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | void* SkOrderedReadBuffer::readEncodedString(size_t* length, SkPaint::TextEncoding encoding) { |
humper@google.com | 0e51577 | 2013-01-07 19:54:40 +0000 | [diff] [blame] | 107 | SkDEBUGCODE(int32_t encodingType = ) fReader.readInt(); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 108 | SkASSERT(encodingType == encoding); |
| 109 | *length = fReader.readInt(); |
| 110 | void* data = sk_malloc_throw(*length); |
| 111 | memcpy(data, fReader.skip(SkAlign4(*length)), *length); |
| 112 | return data; |
| 113 | } |
| 114 | |
| 115 | void SkOrderedReadBuffer::readPoint(SkPoint* point) { |
| 116 | point->fX = fReader.readScalar(); |
| 117 | point->fY = fReader.readScalar(); |
| 118 | } |
| 119 | |
| 120 | void SkOrderedReadBuffer::readMatrix(SkMatrix* matrix) { |
| 121 | fReader.readMatrix(matrix); |
| 122 | } |
| 123 | |
| 124 | void SkOrderedReadBuffer::readIRect(SkIRect* rect) { |
| 125 | memcpy(rect, fReader.skip(sizeof(SkIRect)), sizeof(SkIRect)); |
| 126 | } |
| 127 | |
| 128 | void SkOrderedReadBuffer::readRect(SkRect* rect) { |
| 129 | memcpy(rect, fReader.skip(sizeof(SkRect)), sizeof(SkRect)); |
| 130 | } |
| 131 | |
| 132 | void SkOrderedReadBuffer::readRegion(SkRegion* region) { |
| 133 | fReader.readRegion(region); |
| 134 | } |
| 135 | |
| 136 | void SkOrderedReadBuffer::readPath(SkPath* path) { |
| 137 | fReader.readPath(path); |
| 138 | } |
| 139 | |
| 140 | uint32_t SkOrderedReadBuffer::readByteArray(void* value) { |
| 141 | const uint32_t length = fReader.readU32(); |
| 142 | memcpy(value, fReader.skip(SkAlign4(length)), length); |
| 143 | return length; |
| 144 | } |
| 145 | |
| 146 | uint32_t SkOrderedReadBuffer::readColorArray(SkColor* colors) { |
| 147 | const uint32_t count = fReader.readU32(); |
| 148 | const uint32_t byteLength = count * sizeof(SkColor); |
| 149 | memcpy(colors, fReader.skip(SkAlign4(byteLength)), byteLength); |
| 150 | return count; |
| 151 | } |
| 152 | |
| 153 | uint32_t SkOrderedReadBuffer::readIntArray(int32_t* values) { |
| 154 | const uint32_t count = fReader.readU32(); |
| 155 | const uint32_t byteLength = count * sizeof(int32_t); |
| 156 | memcpy(values, fReader.skip(SkAlign4(byteLength)), byteLength); |
| 157 | return count; |
| 158 | } |
| 159 | |
| 160 | uint32_t SkOrderedReadBuffer::readPointArray(SkPoint* points) { |
| 161 | const uint32_t count = fReader.readU32(); |
| 162 | const uint32_t byteLength = count * sizeof(SkPoint); |
| 163 | memcpy(points, fReader.skip(SkAlign4(byteLength)), byteLength); |
| 164 | return count; |
| 165 | } |
| 166 | |
| 167 | uint32_t SkOrderedReadBuffer::readScalarArray(SkScalar* values) { |
| 168 | const uint32_t count = fReader.readU32(); |
| 169 | const uint32_t byteLength = count * sizeof(SkScalar); |
| 170 | memcpy(values, fReader.skip(SkAlign4(byteLength)), byteLength); |
| 171 | return count; |
| 172 | } |
| 173 | |
| 174 | uint32_t SkOrderedReadBuffer::getArrayCount() { |
| 175 | return *(uint32_t*)fReader.peek(); |
| 176 | } |
| 177 | |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 178 | void SkOrderedReadBuffer::readBitmap(SkBitmap* bitmap) { |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 179 | const int width = this->readInt(); |
| 180 | const int height = this->readInt(); |
| 181 | // The writer stored a boolean value to determine whether an SkBitmapHeap was used during |
| 182 | // writing. |
| 183 | if (this->readBool()) { |
| 184 | // An SkBitmapHeap was used for writing. Read the index from the stream and find the |
| 185 | // corresponding SkBitmap in fBitmapStorage. |
| 186 | const uint32_t index = fReader.readU32(); |
| 187 | fReader.readU32(); // bitmap generation ID (see SkOrderedWriteBuffer::writeBitmap) |
| 188 | if (fBitmapStorage) { |
| 189 | *bitmap = *fBitmapStorage->getBitmap(index); |
| 190 | fBitmapStorage->releaseRef(index); |
| 191 | return; |
scroggo@google.com | 0cb7df9 | 2013-04-30 02:37:56 +0000 | [diff] [blame] | 192 | } else { |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 193 | // The bitmap was stored in a heap, but there is no way to access it. Set an error and |
| 194 | // fall through to use a place holder bitmap. |
| 195 | SkErrorInternals::SetError(kParseError_SkError, "SkOrderedWriteBuffer::writeBitmap " |
| 196 | "stored the SkBitmap in an SkBitmapHeap, but " |
| 197 | "SkOrderedReadBuffer has no SkBitmapHeapReader to " |
| 198 | "retrieve the SkBitmap."); |
scroggo@google.com | 0cb7df9 | 2013-04-30 02:37:56 +0000 | [diff] [blame] | 199 | } |
| 200 | } else { |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 201 | // The writer stored false, meaning the SkBitmap was not stored in an SkBitmapHeap. |
| 202 | const size_t length = this->readUInt(); |
| 203 | if (length > 0) { |
scroggo@google.com | c6e5fcb | 2013-07-08 22:00:17 +0000 | [diff] [blame^] | 204 | #ifdef DEBUG_NON_DETERMINISTIC_ASSERT |
| 205 | fDecodedBitmapIndex++; |
| 206 | #endif // DEBUG_NON_DETERMINISTIC_ASSERT |
scroggo@google.com | 2d76d93 | 2013-05-31 14:39:54 +0000 | [diff] [blame] | 207 | // A non-zero size means the SkBitmap was encoded. Read the data and pixel |
| 208 | // offset. |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 209 | const void* data = this->skip(length); |
scroggo@google.com | 2d76d93 | 2013-05-31 14:39:54 +0000 | [diff] [blame] | 210 | const int32_t xOffset = fReader.readS32(); |
| 211 | const int32_t yOffset = fReader.readS32(); |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 212 | if (fBitmapDecoder != NULL && fBitmapDecoder(data, length, bitmap)) { |
scroggo@google.com | 719a373 | 2013-05-16 19:35:39 +0000 | [diff] [blame] | 213 | if (bitmap->width() == width && bitmap->height() == height) { |
scroggo@google.com | c6e5fcb | 2013-07-08 22:00:17 +0000 | [diff] [blame^] | 214 | #ifdef DEBUG_NON_DETERMINISTIC_ASSERT |
| 215 | if (0 != xOffset || 0 != yOffset) { |
| 216 | SkDebugf("SkOrderedReadBuffer::readBitmap: heights match," |
| 217 | " but offset is not zero. \nInfo about the bitmap:" |
| 218 | "\n\tIndex: %d\n\tDimensions: [%d %d]\n\tEncoded" |
| 219 | " data size: %d\n\tOffset: (%d, %d)\n", |
| 220 | fDecodedBitmapIndex, width, height, length, xOffset, |
| 221 | yOffset); |
| 222 | } |
| 223 | #endif // DEBUG_NON_DETERMINISTIC_ASSERT |
scroggo@google.com | 2d76d93 | 2013-05-31 14:39:54 +0000 | [diff] [blame] | 224 | // If the width and height match, there should be no offset. |
| 225 | SkASSERT(0 == xOffset && 0 == yOffset); |
scroggo@google.com | 719a373 | 2013-05-16 19:35:39 +0000 | [diff] [blame] | 226 | return; |
| 227 | } |
| 228 | |
| 229 | // This case can only be reached if extractSubset was called, so |
| 230 | // the recorded width and height must be smaller than (or equal to |
| 231 | // the encoded width and height. |
| 232 | SkASSERT(width <= bitmap->width() && height <= bitmap->height()); |
| 233 | |
scroggo@google.com | 719a373 | 2013-05-16 19:35:39 +0000 | [diff] [blame] | 234 | SkBitmap subsetBm; |
scroggo@google.com | 2d76d93 | 2013-05-31 14:39:54 +0000 | [diff] [blame] | 235 | SkIRect subset = SkIRect::MakeXYWH(xOffset, yOffset, width, height); |
scroggo@google.com | 719a373 | 2013-05-16 19:35:39 +0000 | [diff] [blame] | 236 | if (bitmap->extractSubset(&subsetBm, subset)) { |
| 237 | bitmap->swap(subsetBm); |
| 238 | return; |
| 239 | } |
scroggo@google.com | 0cb7df9 | 2013-04-30 02:37:56 +0000 | [diff] [blame] | 240 | } |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 241 | // This bitmap was encoded when written, but we are unable to decode, possibly due to |
| 242 | // not having a decoder. |
| 243 | SkErrorInternals::SetError(kParseError_SkError, |
| 244 | "Could not decode bitmap. Resulting bitmap will be red."); |
scroggo@google.com | 0cb7df9 | 2013-04-30 02:37:56 +0000 | [diff] [blame] | 245 | } else { |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 246 | // A size of zero means the SkBitmap was simply flattened. |
| 247 | bitmap->unflatten(*this); |
| 248 | return; |
scroggo@google.com | 5a7c6be | 2012-10-04 21:46:08 +0000 | [diff] [blame] | 249 | } |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 250 | } |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 251 | // Could not read the SkBitmap. Use a placeholder bitmap. |
| 252 | bitmap->setConfig(SkBitmap::kARGB_8888_Config, width, height); |
| 253 | bitmap->allocPixels(); |
| 254 | bitmap->eraseColor(SK_ColorRED); |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 255 | } |
| 256 | |
| 257 | SkTypeface* SkOrderedReadBuffer::readTypeface() { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 258 | |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 259 | uint32_t index = fReader.readU32(); |
| 260 | if (0 == index || index > (unsigned)fTFCount) { |
| 261 | if (index) { |
| 262 | SkDebugf("====== typeface index %d\n", index); |
| 263 | } |
| 264 | return NULL; |
| 265 | } else { |
| 266 | SkASSERT(fTFArray); |
| 267 | return fTFArray[index - 1]; |
| 268 | } |
| 269 | } |
| 270 | |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 271 | SkFlattenable* SkOrderedReadBuffer::readFlattenable() { |
| 272 | SkFlattenable::Factory factory = NULL; |
| 273 | |
| 274 | if (fFactoryCount > 0) { |
| 275 | int32_t index = fReader.readU32(); |
| 276 | if (0 == index) { |
| 277 | return NULL; // writer failed to give us the flattenable |
| 278 | } |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 279 | index -= 1; // we stored the index-base-1 |
| 280 | SkASSERT(index < fFactoryCount); |
| 281 | factory = fFactoryArray[index]; |
| 282 | } else if (fFactoryTDArray) { |
scroggo@google.com | 0c3e5fe | 2012-08-01 19:34:20 +0000 | [diff] [blame] | 283 | int32_t index = fReader.readU32(); |
| 284 | if (0 == index) { |
| 285 | return NULL; // writer failed to give us the flattenable |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 286 | } |
scroggo@google.com | 0c3e5fe | 2012-08-01 19:34:20 +0000 | [diff] [blame] | 287 | index -= 1; // we stored the index-base-1 |
| 288 | factory = (*fFactoryTDArray)[index]; |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 289 | } else { |
| 290 | factory = (SkFlattenable::Factory)readFunctionPtr(); |
| 291 | if (NULL == factory) { |
| 292 | return NULL; // writer failed to give us the flattenable |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | // if we get here, factory may still be null, but if that is the case, the |
| 297 | // failure was ours, not the writer. |
| 298 | SkFlattenable* obj = NULL; |
| 299 | uint32_t sizeRecorded = fReader.readU32(); |
| 300 | if (factory) { |
| 301 | uint32_t offset = fReader.offset(); |
| 302 | obj = (*factory)(*this); |
| 303 | // check that we read the amount we expected |
| 304 | uint32_t sizeRead = fReader.offset() - offset; |
| 305 | if (sizeRecorded != sizeRead) { |
| 306 | // we could try to fix up the offset... |
| 307 | sk_throw(); |
| 308 | } |
| 309 | } else { |
| 310 | // we must skip the remaining data |
| 311 | fReader.skip(sizeRecorded); |
| 312 | } |
| 313 | return obj; |
| 314 | } |