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" |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 11 | #include "SkReadBuffer.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 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 15 | static uint32_t default_flags() { |
| 16 | uint32_t flags = 0; |
| 17 | #ifdef SK_SCALAR_IS_FLOAT |
| 18 | flags |= SkReadBuffer::kScalarIsFloat_Flag; |
| 19 | #endif |
| 20 | if (8 == sizeof(void*)) { |
| 21 | flags |= SkReadBuffer::kPtrIs64Bit_Flag; |
| 22 | } |
| 23 | return flags; |
| 24 | } |
| 25 | |
| 26 | SkReadBuffer::SkReadBuffer() { |
| 27 | fFlags = default_flags(); |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 28 | fMemoryPtr = NULL; |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 29 | |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 30 | fBitmapStorage = NULL; |
| 31 | fTFArray = NULL; |
| 32 | fTFCount = 0; |
| 33 | |
| 34 | fFactoryTDArray = NULL; |
| 35 | fFactoryArray = NULL; |
| 36 | fFactoryCount = 0; |
scroggo@google.com | 5a7c6be | 2012-10-04 21:46:08 +0000 | [diff] [blame] | 37 | fBitmapDecoder = NULL; |
scroggo@google.com | c6e5fcb | 2013-07-08 22:00:17 +0000 | [diff] [blame] | 38 | #ifdef DEBUG_NON_DETERMINISTIC_ASSERT |
| 39 | fDecodedBitmapIndex = -1; |
| 40 | #endif // DEBUG_NON_DETERMINISTIC_ASSERT |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 41 | } |
| 42 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 43 | SkReadBuffer::SkReadBuffer(const void* data, size_t size) { |
| 44 | fFlags = default_flags(); |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 45 | fReader.setMemory(data, size); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 46 | fMemoryPtr = NULL; |
| 47 | |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 48 | fBitmapStorage = NULL; |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 49 | fTFArray = NULL; |
| 50 | fTFCount = 0; |
| 51 | |
| 52 | fFactoryTDArray = NULL; |
| 53 | fFactoryArray = NULL; |
| 54 | fFactoryCount = 0; |
scroggo@google.com | 5a7c6be | 2012-10-04 21:46:08 +0000 | [diff] [blame] | 55 | fBitmapDecoder = NULL; |
scroggo@google.com | c6e5fcb | 2013-07-08 22:00:17 +0000 | [diff] [blame] | 56 | #ifdef DEBUG_NON_DETERMINISTIC_ASSERT |
| 57 | fDecodedBitmapIndex = -1; |
| 58 | #endif // DEBUG_NON_DETERMINISTIC_ASSERT |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 59 | } |
| 60 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 61 | SkReadBuffer::SkReadBuffer(SkStream* stream) { |
| 62 | fFlags = default_flags(); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 63 | const size_t length = stream->getLength(); |
| 64 | fMemoryPtr = sk_malloc_throw(length); |
| 65 | stream->read(fMemoryPtr, length); |
| 66 | fReader.setMemory(fMemoryPtr, length); |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 67 | |
| 68 | fBitmapStorage = NULL; |
| 69 | fTFArray = NULL; |
| 70 | fTFCount = 0; |
| 71 | |
| 72 | fFactoryTDArray = NULL; |
| 73 | fFactoryArray = NULL; |
| 74 | fFactoryCount = 0; |
scroggo@google.com | 5a7c6be | 2012-10-04 21:46:08 +0000 | [diff] [blame] | 75 | fBitmapDecoder = NULL; |
scroggo@google.com | c6e5fcb | 2013-07-08 22:00:17 +0000 | [diff] [blame] | 76 | #ifdef DEBUG_NON_DETERMINISTIC_ASSERT |
| 77 | fDecodedBitmapIndex = -1; |
| 78 | #endif // DEBUG_NON_DETERMINISTIC_ASSERT |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 79 | } |
| 80 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 81 | SkReadBuffer::~SkReadBuffer() { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 82 | sk_free(fMemoryPtr); |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 83 | SkSafeUnref(fBitmapStorage); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 84 | } |
| 85 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 86 | bool SkReadBuffer::readBool() { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 87 | return fReader.readBool(); |
| 88 | } |
| 89 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 90 | SkColor SkReadBuffer::readColor() { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 91 | return fReader.readInt(); |
| 92 | } |
| 93 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 94 | SkFixed SkReadBuffer::readFixed() { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 95 | return fReader.readS32(); |
| 96 | } |
| 97 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 98 | int32_t SkReadBuffer::readInt() { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 99 | return fReader.readInt(); |
| 100 | } |
| 101 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 102 | SkScalar SkReadBuffer::readScalar() { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 103 | return fReader.readScalar(); |
| 104 | } |
| 105 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 106 | uint32_t SkReadBuffer::readUInt() { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 107 | return fReader.readU32(); |
| 108 | } |
| 109 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 110 | int32_t SkReadBuffer::read32() { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 111 | return fReader.readInt(); |
| 112 | } |
| 113 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 114 | void SkReadBuffer::readString(SkString* string) { |
djsollen@google.com | 7768751 | 2013-05-21 16:17:14 +0000 | [diff] [blame] | 115 | size_t len; |
| 116 | const char* strContents = fReader.readString(&len); |
| 117 | string->set(strContents, len); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 118 | } |
| 119 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 120 | void* SkReadBuffer::readEncodedString(size_t* length, SkPaint::TextEncoding encoding) { |
humper@google.com | 0e51577 | 2013-01-07 19:54:40 +0000 | [diff] [blame] | 121 | SkDEBUGCODE(int32_t encodingType = ) fReader.readInt(); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 122 | SkASSERT(encodingType == encoding); |
| 123 | *length = fReader.readInt(); |
| 124 | void* data = sk_malloc_throw(*length); |
| 125 | memcpy(data, fReader.skip(SkAlign4(*length)), *length); |
| 126 | return data; |
| 127 | } |
| 128 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 129 | void SkReadBuffer::readPoint(SkPoint* point) { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 130 | point->fX = fReader.readScalar(); |
| 131 | point->fY = fReader.readScalar(); |
| 132 | } |
| 133 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 134 | void SkReadBuffer::readMatrix(SkMatrix* matrix) { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 135 | fReader.readMatrix(matrix); |
| 136 | } |
| 137 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 138 | void SkReadBuffer::readIRect(SkIRect* rect) { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 139 | memcpy(rect, fReader.skip(sizeof(SkIRect)), sizeof(SkIRect)); |
| 140 | } |
| 141 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 142 | void SkReadBuffer::readRect(SkRect* rect) { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 143 | memcpy(rect, fReader.skip(sizeof(SkRect)), sizeof(SkRect)); |
| 144 | } |
| 145 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 146 | void SkReadBuffer::readRegion(SkRegion* region) { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 147 | fReader.readRegion(region); |
| 148 | } |
| 149 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 150 | void SkReadBuffer::readPath(SkPath* path) { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 151 | fReader.readPath(path); |
| 152 | } |
| 153 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 154 | bool SkReadBuffer::readArray(void* value, size_t size, size_t elementSize) { |
commit-bot@chromium.org | 0251288 | 2013-10-31 18:37:50 +0000 | [diff] [blame] | 155 | const size_t count = this->getArrayCount(); |
| 156 | if (count == size) { |
| 157 | (void)fReader.skip(sizeof(uint32_t)); // Skip array count |
| 158 | const size_t byteLength = count * elementSize; |
| 159 | memcpy(value, fReader.skip(SkAlign4(byteLength)), byteLength); |
| 160 | return true; |
| 161 | } |
| 162 | SkASSERT(false); |
| 163 | fReader.skip(fReader.available()); |
| 164 | return false; |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 165 | } |
| 166 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 167 | bool SkReadBuffer::readByteArray(void* value, size_t size) { |
commit-bot@chromium.org | 0251288 | 2013-10-31 18:37:50 +0000 | [diff] [blame] | 168 | return readArray(static_cast<unsigned char*>(value), size, sizeof(unsigned char)); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 169 | } |
| 170 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 171 | bool SkReadBuffer::readColorArray(SkColor* colors, size_t size) { |
commit-bot@chromium.org | 0251288 | 2013-10-31 18:37:50 +0000 | [diff] [blame] | 172 | return readArray(colors, size, sizeof(SkColor)); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 173 | } |
| 174 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 175 | bool SkReadBuffer::readIntArray(int32_t* values, size_t size) { |
commit-bot@chromium.org | 0251288 | 2013-10-31 18:37:50 +0000 | [diff] [blame] | 176 | return readArray(values, size, sizeof(int32_t)); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 177 | } |
| 178 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 179 | bool SkReadBuffer::readPointArray(SkPoint* points, size_t size) { |
commit-bot@chromium.org | 0251288 | 2013-10-31 18:37:50 +0000 | [diff] [blame] | 180 | return readArray(points, size, sizeof(SkPoint)); |
| 181 | } |
| 182 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 183 | bool SkReadBuffer::readScalarArray(SkScalar* values, size_t size) { |
commit-bot@chromium.org | 0251288 | 2013-10-31 18:37:50 +0000 | [diff] [blame] | 184 | return readArray(values, size, sizeof(SkScalar)); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 185 | } |
| 186 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 187 | uint32_t SkReadBuffer::getArrayCount() { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 188 | return *(uint32_t*)fReader.peek(); |
| 189 | } |
| 190 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 191 | void SkReadBuffer::readBitmap(SkBitmap* bitmap) { |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 192 | const int width = this->readInt(); |
| 193 | const int height = this->readInt(); |
| 194 | // The writer stored a boolean value to determine whether an SkBitmapHeap was used during |
| 195 | // writing. |
| 196 | if (this->readBool()) { |
| 197 | // An SkBitmapHeap was used for writing. Read the index from the stream and find the |
| 198 | // corresponding SkBitmap in fBitmapStorage. |
| 199 | const uint32_t index = fReader.readU32(); |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 200 | fReader.readU32(); // bitmap generation ID (see SkWriteBuffer::writeBitmap) |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 201 | if (fBitmapStorage) { |
| 202 | *bitmap = *fBitmapStorage->getBitmap(index); |
| 203 | fBitmapStorage->releaseRef(index); |
| 204 | return; |
scroggo@google.com | 0cb7df9 | 2013-04-30 02:37:56 +0000 | [diff] [blame] | 205 | } else { |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 206 | // The bitmap was stored in a heap, but there is no way to access it. Set an error and |
| 207 | // fall through to use a place holder bitmap. |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 208 | SkErrorInternals::SetError(kParseError_SkError, "SkWriteBuffer::writeBitmap " |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 209 | "stored the SkBitmap in an SkBitmapHeap, but " |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 210 | "SkReadBuffer has no SkBitmapHeapReader to " |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 211 | "retrieve the SkBitmap."); |
scroggo@google.com | 0cb7df9 | 2013-04-30 02:37:56 +0000 | [diff] [blame] | 212 | } |
| 213 | } else { |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 214 | // The writer stored false, meaning the SkBitmap was not stored in an SkBitmapHeap. |
| 215 | const size_t length = this->readUInt(); |
| 216 | if (length > 0) { |
scroggo@google.com | c6e5fcb | 2013-07-08 22:00:17 +0000 | [diff] [blame] | 217 | #ifdef DEBUG_NON_DETERMINISTIC_ASSERT |
| 218 | fDecodedBitmapIndex++; |
| 219 | #endif // DEBUG_NON_DETERMINISTIC_ASSERT |
scroggo@google.com | 2d76d93 | 2013-05-31 14:39:54 +0000 | [diff] [blame] | 220 | // A non-zero size means the SkBitmap was encoded. Read the data and pixel |
| 221 | // offset. |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 222 | const void* data = this->skip(length); |
scroggo@google.com | 2d76d93 | 2013-05-31 14:39:54 +0000 | [diff] [blame] | 223 | const int32_t xOffset = fReader.readS32(); |
| 224 | const int32_t yOffset = fReader.readS32(); |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 225 | if (fBitmapDecoder != NULL && fBitmapDecoder(data, length, bitmap)) { |
scroggo@google.com | 719a373 | 2013-05-16 19:35:39 +0000 | [diff] [blame] | 226 | if (bitmap->width() == width && bitmap->height() == height) { |
scroggo@google.com | c6e5fcb | 2013-07-08 22:00:17 +0000 | [diff] [blame] | 227 | #ifdef DEBUG_NON_DETERMINISTIC_ASSERT |
| 228 | if (0 != xOffset || 0 != yOffset) { |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 229 | SkDebugf("SkReadBuffer::readBitmap: heights match," |
scroggo@google.com | c6e5fcb | 2013-07-08 22:00:17 +0000 | [diff] [blame] | 230 | " but offset is not zero. \nInfo about the bitmap:" |
| 231 | "\n\tIndex: %d\n\tDimensions: [%d %d]\n\tEncoded" |
| 232 | " data size: %d\n\tOffset: (%d, %d)\n", |
| 233 | fDecodedBitmapIndex, width, height, length, xOffset, |
| 234 | yOffset); |
| 235 | } |
| 236 | #endif // DEBUG_NON_DETERMINISTIC_ASSERT |
scroggo@google.com | 2d76d93 | 2013-05-31 14:39:54 +0000 | [diff] [blame] | 237 | // If the width and height match, there should be no offset. |
| 238 | SkASSERT(0 == xOffset && 0 == yOffset); |
scroggo@google.com | 719a373 | 2013-05-16 19:35:39 +0000 | [diff] [blame] | 239 | return; |
| 240 | } |
| 241 | |
| 242 | // This case can only be reached if extractSubset was called, so |
scroggo@google.com | 0207683 | 2013-12-16 20:02:03 +0000 | [diff] [blame] | 243 | // the recorded width and height must be smaller than or equal to |
scroggo@google.com | 719a373 | 2013-05-16 19:35:39 +0000 | [diff] [blame] | 244 | // the encoded width and height. |
scroggo@google.com | 0207683 | 2013-12-16 20:02:03 +0000 | [diff] [blame] | 245 | // FIXME (scroggo): This assert assumes that our decoder and the |
| 246 | // sources encoder agree on the width and height which may not |
| 247 | // always be the case. Removing until it can be investigated |
| 248 | // further. |
| 249 | //SkASSERT(width <= bitmap->width() && height <= bitmap->height()); |
scroggo@google.com | 719a373 | 2013-05-16 19:35:39 +0000 | [diff] [blame] | 250 | |
scroggo@google.com | 719a373 | 2013-05-16 19:35:39 +0000 | [diff] [blame] | 251 | SkBitmap subsetBm; |
scroggo@google.com | 2d76d93 | 2013-05-31 14:39:54 +0000 | [diff] [blame] | 252 | SkIRect subset = SkIRect::MakeXYWH(xOffset, yOffset, width, height); |
scroggo@google.com | 719a373 | 2013-05-16 19:35:39 +0000 | [diff] [blame] | 253 | if (bitmap->extractSubset(&subsetBm, subset)) { |
| 254 | bitmap->swap(subsetBm); |
| 255 | return; |
| 256 | } |
scroggo@google.com | 0cb7df9 | 2013-04-30 02:37:56 +0000 | [diff] [blame] | 257 | } |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 258 | // This bitmap was encoded when written, but we are unable to decode, possibly due to |
| 259 | // not having a decoder. |
| 260 | SkErrorInternals::SetError(kParseError_SkError, |
| 261 | "Could not decode bitmap. Resulting bitmap will be red."); |
scroggo@google.com | 0cb7df9 | 2013-04-30 02:37:56 +0000 | [diff] [blame] | 262 | } else { |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 263 | // A size of zero means the SkBitmap was simply flattened. |
| 264 | bitmap->unflatten(*this); |
| 265 | return; |
scroggo@google.com | 5a7c6be | 2012-10-04 21:46:08 +0000 | [diff] [blame] | 266 | } |
djsollen@google.com | 21830d9 | 2012-08-07 19:49:41 +0000 | [diff] [blame] | 267 | } |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 268 | // Could not read the SkBitmap. Use a placeholder bitmap. |
reed@google.com | 9ebcac5 | 2014-01-24 18:53:42 +0000 | [diff] [blame] | 269 | bitmap->allocPixels(SkImageInfo::MakeN32Premul(width, height)); |
scroggo@google.com | 2983ddd | 2013-05-07 14:45:40 +0000 | [diff] [blame] | 270 | bitmap->eraseColor(SK_ColorRED); |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 271 | } |
| 272 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 273 | SkTypeface* SkReadBuffer::readTypeface() { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 274 | |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 275 | uint32_t index = fReader.readU32(); |
| 276 | if (0 == index || index > (unsigned)fTFCount) { |
| 277 | if (index) { |
| 278 | SkDebugf("====== typeface index %d\n", index); |
| 279 | } |
| 280 | return NULL; |
| 281 | } else { |
| 282 | SkASSERT(fTFArray); |
| 283 | return fTFArray[index - 1]; |
| 284 | } |
| 285 | } |
| 286 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 287 | SkFlattenable* SkReadBuffer::readFlattenable(SkFlattenable::Type ft) { |
reed@google.com | 3534822 | 2013-10-16 13:05:06 +0000 | [diff] [blame] | 288 | // |
commit-bot@chromium.org | c0b7e10 | 2013-10-23 17:06:21 +0000 | [diff] [blame] | 289 | // TODO: confirm that ft matches the factory we decide to use |
reed@google.com | 3534822 | 2013-10-16 13:05:06 +0000 | [diff] [blame] | 290 | // |
| 291 | |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 292 | SkFlattenable::Factory factory = NULL; |
| 293 | |
| 294 | if (fFactoryCount > 0) { |
| 295 | int32_t index = fReader.readU32(); |
| 296 | if (0 == index) { |
| 297 | return NULL; // writer failed to give us the flattenable |
| 298 | } |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 299 | index -= 1; // we stored the index-base-1 |
| 300 | SkASSERT(index < fFactoryCount); |
| 301 | factory = fFactoryArray[index]; |
| 302 | } else if (fFactoryTDArray) { |
scroggo@google.com | 0c3e5fe | 2012-08-01 19:34:20 +0000 | [diff] [blame] | 303 | int32_t index = fReader.readU32(); |
| 304 | if (0 == index) { |
| 305 | return NULL; // writer failed to give us the flattenable |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 306 | } |
scroggo@google.com | 0c3e5fe | 2012-08-01 19:34:20 +0000 | [diff] [blame] | 307 | index -= 1; // we stored the index-base-1 |
| 308 | factory = (*fFactoryTDArray)[index]; |
djsollen@google.com | 2b2ede3 | 2012-04-12 13:24:04 +0000 | [diff] [blame] | 309 | } else { |
| 310 | factory = (SkFlattenable::Factory)readFunctionPtr(); |
| 311 | if (NULL == factory) { |
| 312 | return NULL; // writer failed to give us the flattenable |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | // if we get here, factory may still be null, but if that is the case, the |
| 317 | // failure was ours, not the writer. |
| 318 | SkFlattenable* obj = NULL; |
| 319 | uint32_t sizeRecorded = fReader.readU32(); |
| 320 | if (factory) { |
| 321 | uint32_t offset = fReader.offset(); |
| 322 | obj = (*factory)(*this); |
| 323 | // check that we read the amount we expected |
| 324 | uint32_t sizeRead = fReader.offset() - offset; |
| 325 | if (sizeRecorded != sizeRead) { |
| 326 | // we could try to fix up the offset... |
| 327 | sk_throw(); |
| 328 | } |
| 329 | } else { |
| 330 | // we must skip the remaining data |
| 331 | fReader.skip(sizeRecorded); |
| 332 | } |
| 333 | return obj; |
| 334 | } |