epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2006 The Android Open Source Project |
| 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 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 9 | |
| 10 | #include "SkStream.h" |
halcanary | 67ec1f8 | 2014-06-27 11:36:20 -0700 | [diff] [blame] | 11 | #include "SkStreamPriv.h" |
reed@google.com | 8d0b577 | 2011-06-24 13:07:31 +0000 | [diff] [blame] | 12 | #include "SkData.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 13 | #include "SkFixed.h" |
| 14 | #include "SkString.h" |
| 15 | #include "SkOSFile.h" |
halcanary | 67ec1f8 | 2014-06-27 11:36:20 -0700 | [diff] [blame] | 16 | #include "SkTypes.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 17 | |
reed@google.com | 3b42998 | 2012-06-26 15:30:08 +0000 | [diff] [blame] | 18 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 19 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 20 | |
| 21 | int8_t SkStream::readS8() { |
| 22 | int8_t value; |
reed@android.com | 04225dc | 2009-03-20 04:59:37 +0000 | [diff] [blame] | 23 | SkDEBUGCODE(size_t len =) this->read(&value, 1); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 24 | SkASSERT(1 == len); |
| 25 | return value; |
| 26 | } |
| 27 | |
| 28 | int16_t SkStream::readS16() { |
| 29 | int16_t value; |
reed@android.com | 04225dc | 2009-03-20 04:59:37 +0000 | [diff] [blame] | 30 | SkDEBUGCODE(size_t len =) this->read(&value, 2); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 31 | SkASSERT(2 == len); |
| 32 | return value; |
| 33 | } |
| 34 | |
| 35 | int32_t SkStream::readS32() { |
| 36 | int32_t value; |
reed@android.com | 04225dc | 2009-03-20 04:59:37 +0000 | [diff] [blame] | 37 | SkDEBUGCODE(size_t len =) this->read(&value, 4); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 38 | SkASSERT(4 == len); |
| 39 | return value; |
| 40 | } |
| 41 | |
| 42 | SkScalar SkStream::readScalar() { |
| 43 | SkScalar value; |
reed@android.com | 04225dc | 2009-03-20 04:59:37 +0000 | [diff] [blame] | 44 | SkDEBUGCODE(size_t len =) this->read(&value, sizeof(SkScalar)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 45 | SkASSERT(sizeof(SkScalar) == len); |
| 46 | return value; |
| 47 | } |
| 48 | |
reed@google.com | 19f286b | 2011-10-18 11:49:52 +0000 | [diff] [blame] | 49 | #define SK_MAX_BYTE_FOR_U8 0xFD |
| 50 | #define SK_BYTE_SENTINEL_FOR_U16 0xFE |
| 51 | #define SK_BYTE_SENTINEL_FOR_U32 0xFF |
| 52 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 53 | size_t SkStream::readPackedUInt() { |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 54 | uint8_t byte; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 55 | if (!this->read(&byte, 1)) { |
| 56 | return 0; |
| 57 | } |
reed@google.com | 19f286b | 2011-10-18 11:49:52 +0000 | [diff] [blame] | 58 | if (SK_BYTE_SENTINEL_FOR_U16 == byte) { |
| 59 | return this->readU16(); |
| 60 | } else if (SK_BYTE_SENTINEL_FOR_U32 == byte) { |
| 61 | return this->readU32(); |
| 62 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 63 | return byte; |
| 64 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 65 | } |
| 66 | |
| 67 | ////////////////////////////////////////////////////////////////////////////////////// |
| 68 | |
| 69 | SkWStream::~SkWStream() |
| 70 | { |
| 71 | } |
| 72 | |
| 73 | void SkWStream::newline() |
| 74 | { |
| 75 | this->write("\n", 1); |
| 76 | } |
| 77 | |
| 78 | void SkWStream::flush() |
| 79 | { |
| 80 | } |
| 81 | |
| 82 | bool SkWStream::writeText(const char text[]) |
| 83 | { |
| 84 | SkASSERT(text); |
| 85 | return this->write(text, strlen(text)); |
| 86 | } |
| 87 | |
| 88 | bool SkWStream::writeDecAsText(int32_t dec) |
| 89 | { |
| 90 | SkString tmp; |
| 91 | tmp.appendS32(dec); |
| 92 | return this->write(tmp.c_str(), tmp.size()); |
| 93 | } |
| 94 | |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 95 | bool SkWStream::writeBigDecAsText(int64_t dec, int minDigits) |
| 96 | { |
| 97 | SkString tmp; |
| 98 | tmp.appendS64(dec, minDigits); |
| 99 | return this->write(tmp.c_str(), tmp.size()); |
| 100 | } |
| 101 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 102 | bool SkWStream::writeHexAsText(uint32_t hex, int digits) |
| 103 | { |
| 104 | SkString tmp; |
| 105 | tmp.appendHex(hex, digits); |
| 106 | return this->write(tmp.c_str(), tmp.size()); |
| 107 | } |
| 108 | |
| 109 | bool SkWStream::writeScalarAsText(SkScalar value) |
| 110 | { |
| 111 | SkString tmp; |
| 112 | tmp.appendScalar(value); |
| 113 | return this->write(tmp.c_str(), tmp.size()); |
| 114 | } |
| 115 | |
| 116 | bool SkWStream::write8(U8CPU value) { |
| 117 | uint8_t v = SkToU8(value); |
| 118 | return this->write(&v, 1); |
| 119 | } |
| 120 | |
| 121 | bool SkWStream::write16(U16CPU value) { |
| 122 | uint16_t v = SkToU16(value); |
| 123 | return this->write(&v, 2); |
| 124 | } |
| 125 | |
| 126 | bool SkWStream::write32(uint32_t value) { |
| 127 | return this->write(&value, 4); |
| 128 | } |
| 129 | |
| 130 | bool SkWStream::writeScalar(SkScalar value) { |
| 131 | return this->write(&value, sizeof(value)); |
| 132 | } |
| 133 | |
commit-bot@chromium.org | dcb8e54 | 2014-03-05 18:25:20 +0000 | [diff] [blame] | 134 | int SkWStream::SizeOfPackedUInt(size_t value) { |
| 135 | if (value <= SK_MAX_BYTE_FOR_U8) { |
| 136 | return 1; |
| 137 | } else if (value <= 0xFFFF) { |
| 138 | return 3; |
| 139 | } |
| 140 | return 5; |
| 141 | } |
| 142 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 143 | bool SkWStream::writePackedUInt(size_t value) { |
reed@google.com | 19f286b | 2011-10-18 11:49:52 +0000 | [diff] [blame] | 144 | uint8_t data[5]; |
| 145 | size_t len = 1; |
| 146 | if (value <= SK_MAX_BYTE_FOR_U8) { |
| 147 | data[0] = value; |
| 148 | len = 1; |
| 149 | } else if (value <= 0xFFFF) { |
| 150 | uint16_t value16 = value; |
| 151 | data[0] = SK_BYTE_SENTINEL_FOR_U16; |
| 152 | memcpy(&data[1], &value16, 2); |
| 153 | len = 3; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 154 | } else { |
commit-bot@chromium.org | f117781 | 2014-04-23 19:19:44 +0000 | [diff] [blame] | 155 | uint32_t value32 = SkToU32(value); |
reed@google.com | 19f286b | 2011-10-18 11:49:52 +0000 | [diff] [blame] | 156 | data[0] = SK_BYTE_SENTINEL_FOR_U32; |
| 157 | memcpy(&data[1], &value32, 4); |
| 158 | len = 5; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 159 | } |
reed@google.com | 19f286b | 2011-10-18 11:49:52 +0000 | [diff] [blame] | 160 | return this->write(data, len); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 161 | } |
| 162 | |
| 163 | bool SkWStream::writeStream(SkStream* stream, size_t length) { |
| 164 | char scratch[1024]; |
| 165 | const size_t MAX = sizeof(scratch); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 166 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 167 | while (length != 0) { |
| 168 | size_t n = length; |
| 169 | if (n > MAX) { |
| 170 | n = MAX; |
| 171 | } |
| 172 | stream->read(scratch, n); |
| 173 | if (!this->write(scratch, n)) { |
| 174 | return false; |
| 175 | } |
| 176 | length -= n; |
| 177 | } |
| 178 | return true; |
| 179 | } |
| 180 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 181 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 182 | |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 183 | SkFILEStream::SkFILEStream(const char file[]) : fName(file), fOwnership(kCallerPasses_Ownership) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 184 | fFILE = file ? sk_fopen(fName.c_str(), kRead_SkFILE_Flag) : NULL; |
| 185 | } |
| 186 | |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 187 | SkFILEStream::SkFILEStream(FILE* file, Ownership ownership) |
| 188 | : fFILE((SkFILE*)file) |
| 189 | , fOwnership(ownership) { |
| 190 | } |
| 191 | |
mike@reedtribe.org | 54d5f83 | 2013-03-19 02:12:50 +0000 | [diff] [blame] | 192 | SkFILEStream::~SkFILEStream() { |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 193 | if (fFILE && fOwnership != kCallerRetains_Ownership) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 194 | sk_fclose(fFILE); |
mike@reedtribe.org | 54d5f83 | 2013-03-19 02:12:50 +0000 | [diff] [blame] | 195 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 196 | } |
| 197 | |
mike@reedtribe.org | 54d5f83 | 2013-03-19 02:12:50 +0000 | [diff] [blame] | 198 | void SkFILEStream::setPath(const char path[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 199 | fName.set(path); |
mike@reedtribe.org | 54d5f83 | 2013-03-19 02:12:50 +0000 | [diff] [blame] | 200 | if (fFILE) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 201 | sk_fclose(fFILE); |
| 202 | fFILE = NULL; |
| 203 | } |
mike@reedtribe.org | 54d5f83 | 2013-03-19 02:12:50 +0000 | [diff] [blame] | 204 | if (path) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 205 | fFILE = sk_fopen(fName.c_str(), kRead_SkFILE_Flag); |
mike@reedtribe.org | 54d5f83 | 2013-03-19 02:12:50 +0000 | [diff] [blame] | 206 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 207 | } |
| 208 | |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 209 | size_t SkFILEStream::read(void* buffer, size_t size) { |
| 210 | if (fFILE) { |
| 211 | return sk_fread(buffer, size, fFILE); |
| 212 | } |
| 213 | return 0; |
| 214 | } |
| 215 | |
| 216 | bool SkFILEStream::isAtEnd() const { |
| 217 | return sk_feof(fFILE); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 218 | } |
| 219 | |
mike@reedtribe.org | 54d5f83 | 2013-03-19 02:12:50 +0000 | [diff] [blame] | 220 | bool SkFILEStream::rewind() { |
| 221 | if (fFILE) { |
| 222 | if (sk_frewind(fFILE)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 223 | return true; |
mike@reedtribe.org | 54d5f83 | 2013-03-19 02:12:50 +0000 | [diff] [blame] | 224 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 225 | // we hit an error |
| 226 | sk_fclose(fFILE); |
| 227 | fFILE = NULL; |
| 228 | } |
| 229 | return false; |
| 230 | } |
| 231 | |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 232 | SkStreamAsset* SkFILEStream::duplicate() const { |
| 233 | if (NULL == fFILE) { |
| 234 | return new SkMemoryStream(); |
| 235 | } |
| 236 | |
bsalomon | 49f085d | 2014-09-05 13:34:00 -0700 | [diff] [blame] | 237 | if (fData.get()) { |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 238 | return new SkMemoryStream(fData); |
| 239 | } |
| 240 | |
| 241 | if (!fName.isEmpty()) { |
| 242 | SkAutoTUnref<SkFILEStream> that(new SkFILEStream(fName.c_str())); |
| 243 | if (sk_fidentical(that->fFILE, this->fFILE)) { |
| 244 | return that.detach(); |
mike@reedtribe.org | 54d5f83 | 2013-03-19 02:12:50 +0000 | [diff] [blame] | 245 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 246 | } |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 247 | |
| 248 | fData.reset(SkData::NewFromFILE(fFILE)); |
| 249 | if (NULL == fData.get()) { |
| 250 | return NULL; |
| 251 | } |
| 252 | return new SkMemoryStream(fData); |
| 253 | } |
| 254 | |
| 255 | size_t SkFILEStream::getPosition() const { |
| 256 | return sk_ftell(fFILE); |
| 257 | } |
| 258 | |
| 259 | bool SkFILEStream::seek(size_t position) { |
| 260 | return sk_fseek(fFILE, position); |
| 261 | } |
| 262 | |
| 263 | bool SkFILEStream::move(long offset) { |
| 264 | return sk_fmove(fFILE, offset); |
| 265 | } |
| 266 | |
| 267 | SkStreamAsset* SkFILEStream::fork() const { |
| 268 | SkAutoTUnref<SkStreamAsset> that(this->duplicate()); |
| 269 | that->seek(this->getPosition()); |
| 270 | return that.detach(); |
| 271 | } |
| 272 | |
| 273 | size_t SkFILEStream::getLength() const { |
| 274 | return sk_fgetsize(fFILE); |
| 275 | } |
| 276 | |
| 277 | const void* SkFILEStream::getMemoryBase() { |
| 278 | if (NULL == fData.get()) { |
| 279 | return NULL; |
| 280 | } |
| 281 | return fData->data(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 282 | } |
| 283 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 284 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 285 | |
reed@google.com | 67d0cff | 2011-06-24 20:06:36 +0000 | [diff] [blame] | 286 | static SkData* newFromParams(const void* src, size_t size, bool copyData) { |
| 287 | if (copyData) { |
| 288 | return SkData::NewWithCopy(src, size); |
| 289 | } else { |
reed | 33a3050 | 2014-09-11 08:42:36 -0700 | [diff] [blame] | 290 | return SkData::NewWithoutCopy(src, size); |
reed@google.com | 67d0cff | 2011-06-24 20:06:36 +0000 | [diff] [blame] | 291 | } |
| 292 | } |
| 293 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 294 | SkMemoryStream::SkMemoryStream() { |
| 295 | fData = SkData::NewEmpty(); |
| 296 | fOffset = 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | SkMemoryStream::SkMemoryStream(size_t size) { |
reed | 33a3050 | 2014-09-11 08:42:36 -0700 | [diff] [blame] | 300 | fData = SkData::NewUninitialized(size); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 301 | fOffset = 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 302 | } |
| 303 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 304 | SkMemoryStream::SkMemoryStream(const void* src, size_t size, bool copyData) { |
reed@google.com | 67d0cff | 2011-06-24 20:06:36 +0000 | [diff] [blame] | 305 | fData = newFromParams(src, size, copyData); |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 306 | fOffset = 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 307 | } |
| 308 | |
scroggo@google.com | e490420 | 2013-01-09 22:02:58 +0000 | [diff] [blame] | 309 | SkMemoryStream::SkMemoryStream(SkData* data) { |
| 310 | if (NULL == data) { |
| 311 | fData = SkData::NewEmpty(); |
| 312 | } else { |
| 313 | fData = data; |
| 314 | fData->ref(); |
| 315 | } |
robertphillips@google.com | c62b726 | 2013-01-14 18:10:08 +0000 | [diff] [blame] | 316 | fOffset = 0; |
humper@google.com | f515ffc | 2013-01-07 15:48:19 +0000 | [diff] [blame] | 317 | } |
| 318 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 319 | SkMemoryStream::~SkMemoryStream() { |
| 320 | fData->unref(); |
| 321 | } |
| 322 | |
| 323 | void SkMemoryStream::setMemoryOwned(const void* src, size_t size) { |
| 324 | fData->unref(); |
| 325 | fData = SkData::NewFromMalloc(src, size); |
| 326 | fOffset = 0; |
| 327 | } |
| 328 | |
| 329 | void SkMemoryStream::setMemory(const void* src, size_t size, bool copyData) { |
| 330 | fData->unref(); |
reed@google.com | 67d0cff | 2011-06-24 20:06:36 +0000 | [diff] [blame] | 331 | fData = newFromParams(src, size, copyData); |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 332 | fOffset = 0; |
| 333 | } |
| 334 | |
| 335 | SkData* SkMemoryStream::copyToData() const { |
| 336 | fData->ref(); |
| 337 | return fData; |
| 338 | } |
| 339 | |
| 340 | SkData* SkMemoryStream::setData(SkData* data) { |
scroggo@google.com | e490420 | 2013-01-09 22:02:58 +0000 | [diff] [blame] | 341 | fData->unref(); |
| 342 | if (NULL == data) { |
| 343 | fData = SkData::NewEmpty(); |
| 344 | } else { |
| 345 | fData = data; |
| 346 | fData->ref(); |
| 347 | } |
bungeman@google.com | 10822c6 | 2013-11-18 21:29:36 +0000 | [diff] [blame] | 348 | fOffset = 0; |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 349 | return data; |
| 350 | } |
| 351 | |
| 352 | void SkMemoryStream::skipToAlign4() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 353 | // cast to remove unary-minus warning |
| 354 | fOffset += -(int)fOffset & 0x03; |
| 355 | } |
| 356 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 357 | size_t SkMemoryStream::read(void* buffer, size_t size) { |
| 358 | size_t dataSize = fData->size(); |
| 359 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 360 | if (size > dataSize - fOffset) { |
| 361 | size = dataSize - fOffset; |
| 362 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 363 | if (buffer) { |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 364 | memcpy(buffer, fData->bytes() + fOffset, size); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 365 | } |
| 366 | fOffset += size; |
| 367 | return size; |
| 368 | } |
| 369 | |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 370 | bool SkMemoryStream::isAtEnd() const { |
| 371 | return fOffset == fData->size(); |
| 372 | } |
| 373 | |
| 374 | bool SkMemoryStream::rewind() { |
| 375 | fOffset = 0; |
| 376 | return true; |
| 377 | } |
| 378 | |
| 379 | SkMemoryStream* SkMemoryStream::duplicate() const { |
| 380 | return SkNEW_ARGS(SkMemoryStream, (fData)); |
| 381 | } |
| 382 | |
| 383 | size_t SkMemoryStream::getPosition() const { |
| 384 | return fOffset; |
| 385 | } |
| 386 | |
| 387 | bool SkMemoryStream::seek(size_t position) { |
| 388 | fOffset = position > fData->size() |
| 389 | ? fData->size() |
| 390 | : position; |
| 391 | return true; |
| 392 | } |
| 393 | |
| 394 | bool SkMemoryStream::move(long offset) { |
| 395 | return this->seek(fOffset + offset); |
| 396 | } |
| 397 | |
| 398 | SkMemoryStream* SkMemoryStream::fork() const { |
| 399 | SkAutoTUnref<SkMemoryStream> that(this->duplicate()); |
| 400 | that->seek(fOffset); |
| 401 | return that.detach(); |
| 402 | } |
| 403 | |
| 404 | size_t SkMemoryStream::getLength() const { |
| 405 | return fData->size(); |
| 406 | } |
| 407 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 408 | const void* SkMemoryStream::getMemoryBase() { |
| 409 | return fData->data(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 410 | } |
| 411 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 412 | const void* SkMemoryStream::getAtPos() { |
| 413 | return fData->bytes() + fOffset; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 414 | } |
| 415 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 416 | ///////////////////////////////////////////////////////////////////////////////////////////////////////// |
| 417 | ///////////////////////////////////////////////////////////////////////////////////////////////////////// |
| 418 | |
| 419 | SkFILEWStream::SkFILEWStream(const char path[]) |
| 420 | { |
| 421 | fFILE = sk_fopen(path, kWrite_SkFILE_Flag); |
| 422 | } |
| 423 | |
| 424 | SkFILEWStream::~SkFILEWStream() |
| 425 | { |
commit-bot@chromium.org | eef834f | 2014-03-05 15:37:11 +0000 | [diff] [blame] | 426 | if (fFILE) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 427 | sk_fclose(fFILE); |
commit-bot@chromium.org | eef834f | 2014-03-05 15:37:11 +0000 | [diff] [blame] | 428 | } |
| 429 | } |
| 430 | |
| 431 | size_t SkFILEWStream::bytesWritten() const { |
| 432 | return sk_ftell(fFILE); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 433 | } |
| 434 | |
| 435 | bool SkFILEWStream::write(const void* buffer, size_t size) |
| 436 | { |
commit-bot@chromium.org | eef834f | 2014-03-05 15:37:11 +0000 | [diff] [blame] | 437 | if (fFILE == NULL) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 438 | return false; |
commit-bot@chromium.org | eef834f | 2014-03-05 15:37:11 +0000 | [diff] [blame] | 439 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 440 | |
| 441 | if (sk_fwrite(buffer, size, fFILE) != size) |
| 442 | { |
| 443 | SkDEBUGCODE(SkDebugf("SkFILEWStream failed writing %d bytes\n", size);) |
| 444 | sk_fclose(fFILE); |
| 445 | fFILE = NULL; |
| 446 | return false; |
| 447 | } |
| 448 | return true; |
| 449 | } |
| 450 | |
| 451 | void SkFILEWStream::flush() |
| 452 | { |
commit-bot@chromium.org | eef834f | 2014-03-05 15:37:11 +0000 | [diff] [blame] | 453 | if (fFILE) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 454 | sk_fflush(fFILE); |
commit-bot@chromium.org | eef834f | 2014-03-05 15:37:11 +0000 | [diff] [blame] | 455 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 456 | } |
| 457 | |
| 458 | //////////////////////////////////////////////////////////////////////// |
| 459 | |
| 460 | SkMemoryWStream::SkMemoryWStream(void* buffer, size_t size) |
| 461 | : fBuffer((char*)buffer), fMaxLength(size), fBytesWritten(0) |
| 462 | { |
| 463 | } |
| 464 | |
commit-bot@chromium.org | f117781 | 2014-04-23 19:19:44 +0000 | [diff] [blame] | 465 | bool SkMemoryWStream::write(const void* buffer, size_t size) { |
| 466 | size = SkTMin(size, fMaxLength - fBytesWritten); |
| 467 | if (size > 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 468 | memcpy(fBuffer + fBytesWritten, buffer, size); |
| 469 | fBytesWritten += size; |
| 470 | return true; |
| 471 | } |
| 472 | return false; |
| 473 | } |
| 474 | |
| 475 | //////////////////////////////////////////////////////////////////////// |
| 476 | |
| 477 | #define SkDynamicMemoryWStream_MinBlockSize 256 |
| 478 | |
| 479 | struct SkDynamicMemoryWStream::Block { |
| 480 | Block* fNext; |
| 481 | char* fCurr; |
| 482 | char* fStop; |
| 483 | |
| 484 | const char* start() const { return (const char*)(this + 1); } |
| 485 | char* start() { return (char*)(this + 1); } |
| 486 | size_t avail() const { return fStop - fCurr; } |
| 487 | size_t written() const { return fCurr - this->start(); } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 488 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 489 | void init(size_t size) |
| 490 | { |
| 491 | fNext = NULL; |
| 492 | fCurr = this->start(); |
| 493 | fStop = this->start() + size; |
| 494 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 495 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 496 | const void* append(const void* data, size_t size) |
| 497 | { |
| 498 | SkASSERT((size_t)(fStop - fCurr) >= size); |
| 499 | memcpy(fCurr, data, size); |
| 500 | fCurr += size; |
| 501 | return (const void*)((const char*)data + size); |
| 502 | } |
| 503 | }; |
| 504 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 505 | SkDynamicMemoryWStream::SkDynamicMemoryWStream() |
| 506 | : fHead(NULL), fTail(NULL), fBytesWritten(0), fCopy(NULL) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 507 | { |
| 508 | } |
| 509 | |
| 510 | SkDynamicMemoryWStream::~SkDynamicMemoryWStream() |
| 511 | { |
| 512 | reset(); |
| 513 | } |
| 514 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 515 | void SkDynamicMemoryWStream::reset() |
| 516 | { |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 517 | this->invalidateCopy(); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 518 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 519 | Block* block = fHead; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 520 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 521 | while (block != NULL) { |
| 522 | Block* next = block->fNext; |
| 523 | sk_free(block); |
| 524 | block = next; |
| 525 | } |
| 526 | fHead = fTail = NULL; |
| 527 | fBytesWritten = 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 528 | } |
| 529 | |
| 530 | bool SkDynamicMemoryWStream::write(const void* buffer, size_t count) |
| 531 | { |
| 532 | if (count > 0) { |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 533 | this->invalidateCopy(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 534 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 535 | fBytesWritten += count; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 536 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 537 | size_t size; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 538 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 539 | if (fTail != NULL && fTail->avail() > 0) { |
commit-bot@chromium.org | f117781 | 2014-04-23 19:19:44 +0000 | [diff] [blame] | 540 | size = SkTMin(fTail->avail(), count); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 541 | buffer = fTail->append(buffer, size); |
| 542 | SkASSERT(count >= size); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 543 | count -= size; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 544 | if (count == 0) |
| 545 | return true; |
| 546 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 547 | |
commit-bot@chromium.org | f117781 | 2014-04-23 19:19:44 +0000 | [diff] [blame] | 548 | size = SkTMax<size_t>(count, SkDynamicMemoryWStream_MinBlockSize); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 549 | Block* block = (Block*)sk_malloc_throw(sizeof(Block) + size); |
| 550 | block->init(size); |
| 551 | block->append(buffer, count); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 552 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 553 | if (fTail != NULL) |
| 554 | fTail->fNext = block; |
| 555 | else |
| 556 | fHead = fTail = block; |
| 557 | fTail = block; |
| 558 | } |
| 559 | return true; |
| 560 | } |
| 561 | |
| 562 | bool SkDynamicMemoryWStream::write(const void* buffer, size_t offset, size_t count) |
| 563 | { |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 564 | if (offset + count > fBytesWritten) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 565 | return false; // test does not partially modify |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 566 | } |
| 567 | |
| 568 | this->invalidateCopy(); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 569 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 570 | Block* block = fHead; |
| 571 | while (block != NULL) { |
| 572 | size_t size = block->written(); |
| 573 | if (offset < size) { |
| 574 | size_t part = offset + count > size ? size - offset : count; |
| 575 | memcpy(block->start() + offset, buffer, part); |
| 576 | if (count <= part) |
| 577 | return true; |
| 578 | count -= part; |
| 579 | buffer = (const void*) ((char* ) buffer + part); |
| 580 | } |
| 581 | offset = offset > size ? offset - size : 0; |
| 582 | block = block->fNext; |
| 583 | } |
| 584 | return false; |
| 585 | } |
| 586 | |
| 587 | bool SkDynamicMemoryWStream::read(void* buffer, size_t offset, size_t count) |
| 588 | { |
| 589 | if (offset + count > fBytesWritten) |
| 590 | return false; // test does not partially modify |
| 591 | Block* block = fHead; |
| 592 | while (block != NULL) { |
| 593 | size_t size = block->written(); |
| 594 | if (offset < size) { |
| 595 | size_t part = offset + count > size ? size - offset : count; |
| 596 | memcpy(buffer, block->start() + offset, part); |
| 597 | if (count <= part) |
| 598 | return true; |
| 599 | count -= part; |
| 600 | buffer = (void*) ((char* ) buffer + part); |
| 601 | } |
| 602 | offset = offset > size ? offset - size : 0; |
| 603 | block = block->fNext; |
| 604 | } |
| 605 | return false; |
| 606 | } |
| 607 | |
| 608 | void SkDynamicMemoryWStream::copyTo(void* dst) const |
| 609 | { |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 610 | if (fCopy) { |
| 611 | memcpy(dst, fCopy->data(), fBytesWritten); |
| 612 | } else { |
| 613 | Block* block = fHead; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 614 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 615 | while (block != NULL) { |
| 616 | size_t size = block->written(); |
| 617 | memcpy(dst, block->start(), size); |
| 618 | dst = (void*)((char*)dst + size); |
| 619 | block = block->fNext; |
| 620 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 621 | } |
| 622 | } |
| 623 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 624 | void SkDynamicMemoryWStream::padToAlign4() |
| 625 | { |
| 626 | // cast to remove unary-minus warning |
| 627 | int padBytes = -(int)fBytesWritten & 0x03; |
| 628 | if (padBytes == 0) |
| 629 | return; |
| 630 | int zero = 0; |
| 631 | write(&zero, padBytes); |
| 632 | } |
| 633 | |
reed@google.com | 8d0b577 | 2011-06-24 13:07:31 +0000 | [diff] [blame] | 634 | SkData* SkDynamicMemoryWStream::copyToData() const { |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 635 | if (NULL == fCopy) { |
reed | 33a3050 | 2014-09-11 08:42:36 -0700 | [diff] [blame] | 636 | SkData* data = SkData::NewUninitialized(fBytesWritten); |
| 637 | // be sure to call copyTo() before we assign to fCopy |
| 638 | this->copyTo(data->writable_data()); |
| 639 | fCopy = data; |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 640 | } |
reed | 33a3050 | 2014-09-11 08:42:36 -0700 | [diff] [blame] | 641 | return SkRef(fCopy); |
reed@google.com | 70442a6 | 2011-06-23 21:48:04 +0000 | [diff] [blame] | 642 | } |
| 643 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 644 | void SkDynamicMemoryWStream::invalidateCopy() { |
| 645 | if (fCopy) { |
| 646 | fCopy->unref(); |
| 647 | fCopy = NULL; |
| 648 | } |
| 649 | } |
| 650 | |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 651 | class SkBlockMemoryRefCnt : public SkRefCnt { |
| 652 | public: |
| 653 | explicit SkBlockMemoryRefCnt(SkDynamicMemoryWStream::Block* head) : fHead(head) { } |
| 654 | |
| 655 | virtual ~SkBlockMemoryRefCnt() { |
| 656 | SkDynamicMemoryWStream::Block* block = fHead; |
| 657 | while (block != NULL) { |
| 658 | SkDynamicMemoryWStream::Block* next = block->fNext; |
| 659 | sk_free(block); |
| 660 | block = next; |
| 661 | } |
| 662 | } |
| 663 | |
| 664 | SkDynamicMemoryWStream::Block* const fHead; |
| 665 | }; |
| 666 | |
| 667 | class SkBlockMemoryStream : public SkStreamAsset { |
| 668 | public: |
| 669 | SkBlockMemoryStream(SkDynamicMemoryWStream::Block* head, size_t size) |
| 670 | : fBlockMemory(SkNEW_ARGS(SkBlockMemoryRefCnt, (head))), fCurrent(head) |
| 671 | , fSize(size) , fOffset(0), fCurrentOffset(0) { } |
| 672 | |
| 673 | SkBlockMemoryStream(SkBlockMemoryRefCnt* headRef, size_t size) |
| 674 | : fBlockMemory(SkRef(headRef)), fCurrent(fBlockMemory->fHead) |
| 675 | , fSize(size) , fOffset(0), fCurrentOffset(0) { } |
| 676 | |
| 677 | virtual size_t read(void* buffer, size_t rawCount) SK_OVERRIDE { |
| 678 | size_t count = rawCount; |
| 679 | if (fOffset + count > fSize) { |
| 680 | count = fSize - fOffset; |
| 681 | } |
| 682 | size_t bytesLeftToRead = count; |
| 683 | while (fCurrent != NULL) { |
| 684 | size_t bytesLeftInCurrent = fCurrent->written() - fCurrentOffset; |
bungeman@google.com | 8d79f96 | 2014-03-05 16:26:14 +0000 | [diff] [blame] | 685 | size_t bytesFromCurrent = SkTMin(bytesLeftToRead, bytesLeftInCurrent); |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 686 | if (buffer) { |
| 687 | memcpy(buffer, fCurrent->start() + fCurrentOffset, bytesFromCurrent); |
bungeman@google.com | 8d79f96 | 2014-03-05 16:26:14 +0000 | [diff] [blame] | 688 | buffer = SkTAddOffset<void>(buffer, bytesFromCurrent); |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 689 | } |
| 690 | if (bytesLeftToRead <= bytesFromCurrent) { |
| 691 | fCurrentOffset += bytesFromCurrent; |
| 692 | fOffset += count; |
| 693 | return count; |
| 694 | } |
| 695 | bytesLeftToRead -= bytesFromCurrent; |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 696 | fCurrent = fCurrent->fNext; |
| 697 | fCurrentOffset = 0; |
| 698 | } |
| 699 | SkASSERT(false); |
| 700 | return 0; |
| 701 | } |
| 702 | |
| 703 | virtual bool isAtEnd() const SK_OVERRIDE { |
| 704 | return fOffset == fSize; |
| 705 | } |
| 706 | |
| 707 | virtual bool rewind() SK_OVERRIDE { |
| 708 | fCurrent = fBlockMemory->fHead; |
| 709 | fOffset = 0; |
| 710 | fCurrentOffset = 0; |
| 711 | return true; |
| 712 | } |
| 713 | |
| 714 | virtual SkBlockMemoryStream* duplicate() const SK_OVERRIDE { |
| 715 | return SkNEW_ARGS(SkBlockMemoryStream, (fBlockMemory.get(), fSize)); |
| 716 | } |
| 717 | |
| 718 | virtual size_t getPosition() const SK_OVERRIDE { |
| 719 | return fOffset; |
| 720 | } |
| 721 | |
| 722 | virtual bool seek(size_t position) SK_OVERRIDE { |
| 723 | // If possible, skip forward. |
| 724 | if (position >= fOffset) { |
| 725 | size_t skipAmount = position - fOffset; |
| 726 | return this->skip(skipAmount) == skipAmount; |
| 727 | } |
| 728 | // If possible, move backward within the current block. |
| 729 | size_t moveBackAmount = fOffset - position; |
| 730 | if (moveBackAmount <= fCurrentOffset) { |
| 731 | fCurrentOffset -= moveBackAmount; |
| 732 | fOffset -= moveBackAmount; |
| 733 | return true; |
| 734 | } |
| 735 | // Otherwise rewind and move forward. |
| 736 | return this->rewind() && this->skip(position) == position; |
| 737 | } |
| 738 | |
| 739 | virtual bool move(long offset) SK_OVERRIDE { |
| 740 | return seek(fOffset + offset); |
| 741 | } |
| 742 | |
| 743 | virtual SkBlockMemoryStream* fork() const SK_OVERRIDE { |
| 744 | SkAutoTUnref<SkBlockMemoryStream> that(this->duplicate()); |
| 745 | that->fCurrent = this->fCurrent; |
| 746 | that->fOffset = this->fOffset; |
| 747 | that->fCurrentOffset = this->fCurrentOffset; |
| 748 | return that.detach(); |
| 749 | } |
| 750 | |
| 751 | virtual size_t getLength() const SK_OVERRIDE { |
| 752 | return fSize; |
| 753 | } |
| 754 | |
| 755 | virtual const void* getMemoryBase() SK_OVERRIDE { |
| 756 | if (NULL == fBlockMemory->fHead->fNext) { |
| 757 | return fBlockMemory->fHead->start(); |
| 758 | } |
| 759 | return NULL; |
| 760 | } |
| 761 | |
| 762 | private: |
| 763 | SkAutoTUnref<SkBlockMemoryRefCnt> const fBlockMemory; |
| 764 | SkDynamicMemoryWStream::Block const * fCurrent; |
| 765 | size_t const fSize; |
| 766 | size_t fOffset; |
| 767 | size_t fCurrentOffset; |
| 768 | }; |
| 769 | |
bungeman@google.com | c29f3d8 | 2013-07-19 22:32:11 +0000 | [diff] [blame] | 770 | SkStreamAsset* SkDynamicMemoryWStream::detachAsStream() { |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 771 | if (fCopy) { |
| 772 | SkMemoryStream* stream = SkNEW_ARGS(SkMemoryStream, (fCopy)); |
| 773 | this->reset(); |
| 774 | return stream; |
| 775 | } |
| 776 | SkBlockMemoryStream* stream = SkNEW_ARGS(SkBlockMemoryStream, (fHead, fBytesWritten)); |
| 777 | fHead = 0; |
| 778 | this->reset(); |
| 779 | return stream; |
| 780 | } |
| 781 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 782 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 783 | |
| 784 | void SkDebugWStream::newline() |
| 785 | { |
humper@google.com | 7af56be | 2013-01-14 18:49:19 +0000 | [diff] [blame] | 786 | #if defined(SK_DEBUG) || defined(SK_DEVELOPER) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 787 | SkDebugf("\n"); |
commit-bot@chromium.org | 490fb6b | 2014-03-06 17:16:26 +0000 | [diff] [blame] | 788 | fBytesWritten++; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 789 | #endif |
| 790 | } |
| 791 | |
| 792 | bool SkDebugWStream::write(const void* buffer, size_t size) |
| 793 | { |
humper@google.com | 7af56be | 2013-01-14 18:49:19 +0000 | [diff] [blame] | 794 | #if defined(SK_DEBUG) || defined(SK_DEVELOPER) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 795 | char* s = new char[size+1]; |
| 796 | memcpy(s, buffer, size); |
| 797 | s[size] = 0; |
| 798 | SkDebugf("%s", s); |
| 799 | delete[] s; |
commit-bot@chromium.org | 0438645 | 2014-03-06 19:23:51 +0000 | [diff] [blame] | 800 | fBytesWritten += size; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 801 | #endif |
| 802 | return true; |
| 803 | } |
reed@google.com | e1575aa | 2013-03-18 21:08:46 +0000 | [diff] [blame] | 804 | |
| 805 | /////////////////////////////////////////////////////////////////////////////// |
| 806 | /////////////////////////////////////////////////////////////////////////////// |
| 807 | |
commit-bot@chromium.org | 9711e44 | 2013-04-24 20:03:00 +0000 | [diff] [blame] | 808 | |
| 809 | static SkData* mmap_filename(const char path[]) { |
| 810 | SkFILE* file = sk_fopen(path, kRead_SkFILE_Flag); |
| 811 | if (NULL == file) { |
| 812 | return NULL; |
reed@google.com | e1575aa | 2013-03-18 21:08:46 +0000 | [diff] [blame] | 813 | } |
skia.committer@gmail.com | 8eaddb0 | 2013-03-19 07:15:10 +0000 | [diff] [blame] | 814 | |
commit-bot@chromium.org | 9711e44 | 2013-04-24 20:03:00 +0000 | [diff] [blame] | 815 | SkData* data = SkData::NewFromFILE(file); |
| 816 | sk_fclose(file); |
| 817 | return data; |
reed@google.com | e1575aa | 2013-03-18 21:08:46 +0000 | [diff] [blame] | 818 | } |
| 819 | |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 820 | SkStreamAsset* SkStream::NewFromFile(const char path[]) { |
commit-bot@chromium.org | 9711e44 | 2013-04-24 20:03:00 +0000 | [diff] [blame] | 821 | SkAutoTUnref<SkData> data(mmap_filename(path)); |
| 822 | if (data.get()) { |
| 823 | return SkNEW_ARGS(SkMemoryStream, (data.get())); |
reed@google.com | e1575aa | 2013-03-18 21:08:46 +0000 | [diff] [blame] | 824 | } |
skia.committer@gmail.com | 8eaddb0 | 2013-03-19 07:15:10 +0000 | [diff] [blame] | 825 | |
reed@google.com | e1575aa | 2013-03-18 21:08:46 +0000 | [diff] [blame] | 826 | // If we get here, then our attempt at using mmap failed, so try normal |
| 827 | // file access. |
| 828 | SkFILEStream* stream = SkNEW_ARGS(SkFILEStream, (path)); |
| 829 | if (!stream->isValid()) { |
| 830 | stream->unref(); |
| 831 | stream = NULL; |
| 832 | } |
| 833 | return stream; |
| 834 | } |
halcanary | 67ec1f8 | 2014-06-27 11:36:20 -0700 | [diff] [blame] | 835 | |
| 836 | // Declared in SkStreamPriv.h: |
| 837 | size_t SkCopyStreamToStorage(SkAutoMalloc* storage, SkStream* stream) { |
| 838 | SkASSERT(storage != NULL); |
| 839 | SkASSERT(stream != NULL); |
| 840 | |
| 841 | if (stream->hasLength()) { |
| 842 | const size_t length = stream->getLength(); |
| 843 | void* dst = storage->reset(length); |
| 844 | if (stream->read(dst, length) != length) { |
| 845 | return 0; |
| 846 | } |
| 847 | return length; |
| 848 | } |
| 849 | |
| 850 | SkDynamicMemoryWStream tempStream; |
| 851 | // Arbitrary buffer size. |
| 852 | const size_t bufferSize = 256 * 1024; // 256KB |
| 853 | char buffer[bufferSize]; |
| 854 | SkDEBUGCODE(size_t debugLength = 0;) |
| 855 | do { |
| 856 | size_t bytesRead = stream->read(buffer, bufferSize); |
| 857 | tempStream.write(buffer, bytesRead); |
| 858 | SkDEBUGCODE(debugLength += bytesRead); |
| 859 | SkASSERT(tempStream.bytesWritten() == debugLength); |
| 860 | } while (!stream->isAtEnd()); |
| 861 | const size_t length = tempStream.bytesWritten(); |
| 862 | void* dst = storage->reset(length); |
| 863 | tempStream.copyTo(dst); |
| 864 | return length; |
| 865 | } |
| 866 | |
| 867 | // Declared in SkStreamPriv.h: |
| 868 | SkData* SkCopyStreamToData(SkStream* stream) { |
| 869 | SkASSERT(stream != NULL); |
| 870 | |
| 871 | if (stream->hasLength()) { |
reed | 9594da1 | 2014-09-12 12:12:27 -0700 | [diff] [blame] | 872 | return SkData::NewFromStream(stream, stream->getLength()); |
halcanary | 67ec1f8 | 2014-06-27 11:36:20 -0700 | [diff] [blame] | 873 | } |
| 874 | |
| 875 | SkDynamicMemoryWStream tempStream; |
| 876 | const size_t bufferSize = 4096; |
| 877 | char buffer[bufferSize]; |
| 878 | do { |
| 879 | size_t bytesRead = stream->read(buffer, bufferSize); |
| 880 | tempStream.write(buffer, bytesRead); |
| 881 | } while (!stream->isAtEnd()); |
| 882 | return tempStream.copyToData(); |
| 883 | } |
halcanary | e322482 | 2014-07-14 09:12:12 -0700 | [diff] [blame] | 884 | |
| 885 | SkStreamRewindable* SkStreamRewindableFromSkStream(SkStream* stream) { |
| 886 | if (!stream) { |
| 887 | return NULL; |
| 888 | } |
| 889 | SkAutoTUnref<SkStreamRewindable> dupStream(stream->duplicate()); |
| 890 | if (dupStream) { |
| 891 | return dupStream.detach(); |
| 892 | } |
| 893 | stream->rewind(); |
| 894 | if (stream->hasLength()) { |
| 895 | size_t length = stream->getLength(); |
| 896 | if (stream->hasPosition()) { // If stream has length, but can't rewind. |
| 897 | length -= stream->getPosition(); |
| 898 | } |
reed | 9594da1 | 2014-09-12 12:12:27 -0700 | [diff] [blame] | 899 | SkAutoTUnref<SkData> data(SkData::NewFromStream(stream, length)); |
halcanary | e322482 | 2014-07-14 09:12:12 -0700 | [diff] [blame] | 900 | return SkNEW_ARGS(SkMemoryStream, (data.get())); |
| 901 | } |
| 902 | SkDynamicMemoryWStream tempStream; |
| 903 | const size_t bufferSize = 4096; |
| 904 | char buffer[bufferSize]; |
| 905 | do { |
| 906 | size_t bytesRead = stream->read(buffer, bufferSize); |
| 907 | tempStream.write(buffer, bytesRead); |
| 908 | } while (!stream->isAtEnd()); |
| 909 | return tempStream.detachAsStream(); // returns a SkBlockMemoryStream, |
| 910 | // cheaper than copying to SkData |
| 911 | } |