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 | { |
halcanary | f0de423 | 2014-11-07 06:07:23 -0800 | [diff] [blame] | 90 | char buffer[SkStrAppendS32_MaxSize]; |
| 91 | char* stop = SkStrAppendS32(buffer, dec); |
| 92 | return this->write(buffer, stop - buffer); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 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 | { |
halcanary | f0de423 | 2014-11-07 06:07:23 -0800 | [diff] [blame] | 97 | char buffer[SkStrAppendU64_MaxSize]; |
| 98 | char* stop = SkStrAppendU64(buffer, dec, minDigits); |
| 99 | return this->write(buffer, stop - buffer); |
vandebo@chromium.org | d877fdb | 2010-10-12 23:08:13 +0000 | [diff] [blame] | 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 | { |
halcanary | f0de423 | 2014-11-07 06:07:23 -0800 | [diff] [blame] | 111 | char buffer[SkStrAppendScalar_MaxSize]; |
| 112 | char* stop = SkStrAppendScalar(buffer, value); |
| 113 | return this->write(buffer, stop - buffer); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 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) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 184 | fFILE = file ? sk_fopen(fName.c_str(), kRead_SkFILE_Flag) : nullptr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 185 | } |
| 186 | |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 187 | SkFILEStream::SkFILEStream(FILE* file, Ownership ownership) |
halcanary | d76be9c | 2015-11-20 13:47:49 -0800 | [diff] [blame] | 188 | : fFILE(file) |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 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); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 202 | fFILE = nullptr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 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); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 227 | fFILE = nullptr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 228 | } |
| 229 | return false; |
| 230 | } |
| 231 | |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 232 | SkStreamAsset* SkFILEStream::duplicate() const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 233 | if (nullptr == fFILE) { |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 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()) { |
scroggo | a1193e4 | 2015-01-21 12:09:53 -0800 | [diff] [blame] | 242 | SkAutoTDelete<SkFILEStream> that(new SkFILEStream(fName.c_str())); |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 243 | if (sk_fidentical(that->fFILE, this->fFILE)) { |
mtklein | 18300a3 | 2016-03-16 13:53:35 -0700 | [diff] [blame^] | 244 | return that.release(); |
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 | |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 248 | fData = SkData::MakeFromFILE(fFILE); |
| 249 | if (nullptr == fData) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 250 | return nullptr; |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 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 { |
scroggo | a1193e4 | 2015-01-21 12:09:53 -0800 | [diff] [blame] | 268 | SkAutoTDelete<SkStreamAsset> that(this->duplicate()); |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 269 | that->seek(this->getPosition()); |
mtklein | 18300a3 | 2016-03-16 13:53:35 -0700 | [diff] [blame^] | 270 | return that.release(); |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 271 | } |
| 272 | |
| 273 | size_t SkFILEStream::getLength() const { |
| 274 | return sk_fgetsize(fFILE); |
| 275 | } |
| 276 | |
| 277 | const void* SkFILEStream::getMemoryBase() { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 278 | if (nullptr == fData.get()) { |
| 279 | return nullptr; |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 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 | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 286 | static sk_sp<SkData> newFromParams(const void* src, size_t size, bool copyData) { |
reed@google.com | 67d0cff | 2011-06-24 20:06:36 +0000 | [diff] [blame] | 287 | if (copyData) { |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 288 | return SkData::MakeWithCopy(src, size); |
reed@google.com | 67d0cff | 2011-06-24 20:06:36 +0000 | [diff] [blame] | 289 | } else { |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 290 | return SkData::MakeWithoutCopy(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() { |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 295 | fData = SkData::MakeEmpty(); |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 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 | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 300 | fData = SkData::MakeUninitialized(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 | |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 309 | SkMemoryStream::SkMemoryStream(sk_sp<SkData> data) : fData(std::move(data)) { |
| 310 | if (nullptr == fData) { |
| 311 | fData = SkData::MakeEmpty(); |
scroggo@google.com | e490420 | 2013-01-09 22:02:58 +0000 | [diff] [blame] | 312 | } |
robertphillips@google.com | c62b726 | 2013-01-14 18:10:08 +0000 | [diff] [blame] | 313 | fOffset = 0; |
humper@google.com | f515ffc | 2013-01-07 15:48:19 +0000 | [diff] [blame] | 314 | } |
| 315 | |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 316 | SkMemoryStream::SkMemoryStream(SkData* data) { |
| 317 | if (nullptr == data) { |
| 318 | fData = SkData::MakeEmpty(); |
| 319 | } else { |
| 320 | fData = sk_ref_sp(data); |
| 321 | } |
| 322 | fOffset = 0; |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 323 | } |
| 324 | |
| 325 | void SkMemoryStream::setMemoryOwned(const void* src, size_t size) { |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 326 | fData = SkData::MakeFromMalloc(src, size); |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 327 | fOffset = 0; |
| 328 | } |
| 329 | |
| 330 | void SkMemoryStream::setMemory(const void* src, size_t size, bool copyData) { |
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 { |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 336 | return SkSafeRef(fData.get()); |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 337 | } |
| 338 | |
| 339 | SkData* SkMemoryStream::setData(SkData* data) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 340 | if (nullptr == data) { |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 341 | fData = SkData::MakeEmpty(); |
scroggo@google.com | e490420 | 2013-01-09 22:02:58 +0000 | [diff] [blame] | 342 | } else { |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 343 | fData = sk_ref_sp(data); |
scroggo@google.com | e490420 | 2013-01-09 22:02:58 +0000 | [diff] [blame] | 344 | } |
bungeman@google.com | 10822c6 | 2013-11-18 21:29:36 +0000 | [diff] [blame] | 345 | fOffset = 0; |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 346 | return data; |
| 347 | } |
| 348 | |
| 349 | void SkMemoryStream::skipToAlign4() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 350 | // cast to remove unary-minus warning |
| 351 | fOffset += -(int)fOffset & 0x03; |
| 352 | } |
| 353 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 354 | size_t SkMemoryStream::read(void* buffer, size_t size) { |
| 355 | size_t dataSize = fData->size(); |
| 356 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 357 | if (size > dataSize - fOffset) { |
| 358 | size = dataSize - fOffset; |
| 359 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 360 | if (buffer) { |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 361 | memcpy(buffer, fData->bytes() + fOffset, size); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 362 | } |
| 363 | fOffset += size; |
| 364 | return size; |
| 365 | } |
| 366 | |
scroggo | d61c384 | 2015-12-07 11:37:13 -0800 | [diff] [blame] | 367 | size_t SkMemoryStream::peek(void* buffer, size_t size) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 368 | SkASSERT(buffer != nullptr); |
scroggo | d61c384 | 2015-12-07 11:37:13 -0800 | [diff] [blame] | 369 | |
| 370 | const size_t currentOffset = fOffset; |
scroggo | 028a413 | 2015-04-02 13:19:51 -0700 | [diff] [blame] | 371 | SkMemoryStream* nonConstThis = const_cast<SkMemoryStream*>(this); |
scroggo | d61c384 | 2015-12-07 11:37:13 -0800 | [diff] [blame] | 372 | const size_t bytesRead = nonConstThis->read(buffer, size); |
| 373 | nonConstThis->fOffset = currentOffset; |
| 374 | return bytesRead; |
scroggo | 028a413 | 2015-04-02 13:19:51 -0700 | [diff] [blame] | 375 | } |
| 376 | |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 377 | bool SkMemoryStream::isAtEnd() const { |
| 378 | return fOffset == fData->size(); |
| 379 | } |
| 380 | |
| 381 | bool SkMemoryStream::rewind() { |
| 382 | fOffset = 0; |
| 383 | return true; |
| 384 | } |
| 385 | |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 386 | SkMemoryStream* SkMemoryStream::duplicate() const { return new SkMemoryStream(fData); } |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 387 | |
| 388 | size_t SkMemoryStream::getPosition() const { |
| 389 | return fOffset; |
| 390 | } |
| 391 | |
| 392 | bool SkMemoryStream::seek(size_t position) { |
| 393 | fOffset = position > fData->size() |
| 394 | ? fData->size() |
| 395 | : position; |
| 396 | return true; |
| 397 | } |
| 398 | |
| 399 | bool SkMemoryStream::move(long offset) { |
| 400 | return this->seek(fOffset + offset); |
| 401 | } |
| 402 | |
| 403 | SkMemoryStream* SkMemoryStream::fork() const { |
scroggo | a1193e4 | 2015-01-21 12:09:53 -0800 | [diff] [blame] | 404 | SkAutoTDelete<SkMemoryStream> that(this->duplicate()); |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 405 | that->seek(fOffset); |
mtklein | 18300a3 | 2016-03-16 13:53:35 -0700 | [diff] [blame^] | 406 | return that.release(); |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 407 | } |
| 408 | |
| 409 | size_t SkMemoryStream::getLength() const { |
| 410 | return fData->size(); |
| 411 | } |
| 412 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 413 | const void* SkMemoryStream::getMemoryBase() { |
| 414 | return fData->data(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 415 | } |
| 416 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 417 | const void* SkMemoryStream::getAtPos() { |
| 418 | return fData->bytes() + fOffset; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 419 | } |
| 420 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 421 | ///////////////////////////////////////////////////////////////////////////////////////////////////////// |
| 422 | ///////////////////////////////////////////////////////////////////////////////////////////////////////// |
| 423 | |
| 424 | SkFILEWStream::SkFILEWStream(const char path[]) |
| 425 | { |
| 426 | fFILE = sk_fopen(path, kWrite_SkFILE_Flag); |
| 427 | } |
| 428 | |
| 429 | SkFILEWStream::~SkFILEWStream() |
| 430 | { |
commit-bot@chromium.org | eef834f | 2014-03-05 15:37:11 +0000 | [diff] [blame] | 431 | if (fFILE) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 432 | sk_fclose(fFILE); |
commit-bot@chromium.org | eef834f | 2014-03-05 15:37:11 +0000 | [diff] [blame] | 433 | } |
| 434 | } |
| 435 | |
| 436 | size_t SkFILEWStream::bytesWritten() const { |
| 437 | return sk_ftell(fFILE); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 438 | } |
| 439 | |
| 440 | bool SkFILEWStream::write(const void* buffer, size_t size) |
| 441 | { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 442 | if (fFILE == nullptr) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 443 | return false; |
commit-bot@chromium.org | eef834f | 2014-03-05 15:37:11 +0000 | [diff] [blame] | 444 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 445 | |
| 446 | if (sk_fwrite(buffer, size, fFILE) != size) |
| 447 | { |
| 448 | SkDEBUGCODE(SkDebugf("SkFILEWStream failed writing %d bytes\n", size);) |
| 449 | sk_fclose(fFILE); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 450 | fFILE = nullptr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 451 | return false; |
| 452 | } |
| 453 | return true; |
| 454 | } |
| 455 | |
| 456 | void SkFILEWStream::flush() |
| 457 | { |
commit-bot@chromium.org | eef834f | 2014-03-05 15:37:11 +0000 | [diff] [blame] | 458 | if (fFILE) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 459 | sk_fflush(fFILE); |
commit-bot@chromium.org | eef834f | 2014-03-05 15:37:11 +0000 | [diff] [blame] | 460 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 461 | } |
| 462 | |
caryclark | 7471fa4 | 2015-12-16 13:41:23 -0800 | [diff] [blame] | 463 | void SkFILEWStream::fsync() |
| 464 | { |
| 465 | flush(); |
| 466 | if (fFILE) { |
| 467 | sk_fsync(fFILE); |
| 468 | } |
| 469 | } |
| 470 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 471 | //////////////////////////////////////////////////////////////////////// |
| 472 | |
| 473 | SkMemoryWStream::SkMemoryWStream(void* buffer, size_t size) |
| 474 | : fBuffer((char*)buffer), fMaxLength(size), fBytesWritten(0) |
| 475 | { |
| 476 | } |
| 477 | |
commit-bot@chromium.org | f117781 | 2014-04-23 19:19:44 +0000 | [diff] [blame] | 478 | bool SkMemoryWStream::write(const void* buffer, size_t size) { |
| 479 | size = SkTMin(size, fMaxLength - fBytesWritten); |
| 480 | if (size > 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 481 | memcpy(fBuffer + fBytesWritten, buffer, size); |
| 482 | fBytesWritten += size; |
| 483 | return true; |
| 484 | } |
| 485 | return false; |
| 486 | } |
| 487 | |
| 488 | //////////////////////////////////////////////////////////////////////// |
| 489 | |
| 490 | #define SkDynamicMemoryWStream_MinBlockSize 256 |
| 491 | |
| 492 | struct SkDynamicMemoryWStream::Block { |
| 493 | Block* fNext; |
| 494 | char* fCurr; |
| 495 | char* fStop; |
| 496 | |
| 497 | const char* start() const { return (const char*)(this + 1); } |
| 498 | char* start() { return (char*)(this + 1); } |
| 499 | size_t avail() const { return fStop - fCurr; } |
| 500 | size_t written() const { return fCurr - this->start(); } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 501 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 502 | void init(size_t size) |
| 503 | { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 504 | fNext = nullptr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 505 | fCurr = this->start(); |
| 506 | fStop = this->start() + size; |
| 507 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 508 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 509 | const void* append(const void* data, size_t size) |
| 510 | { |
| 511 | SkASSERT((size_t)(fStop - fCurr) >= size); |
| 512 | memcpy(fCurr, data, size); |
| 513 | fCurr += size; |
| 514 | return (const void*)((const char*)data + size); |
| 515 | } |
| 516 | }; |
| 517 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 518 | SkDynamicMemoryWStream::SkDynamicMemoryWStream() |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 519 | : fHead(nullptr), fTail(nullptr), fBytesWritten(0) |
| 520 | {} |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 521 | |
| 522 | SkDynamicMemoryWStream::~SkDynamicMemoryWStream() |
| 523 | { |
| 524 | reset(); |
| 525 | } |
| 526 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 527 | void SkDynamicMemoryWStream::reset() |
| 528 | { |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 529 | this->invalidateCopy(); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 530 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 531 | Block* block = fHead; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 532 | |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 533 | while (block != nullptr) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 534 | Block* next = block->fNext; |
| 535 | sk_free(block); |
| 536 | block = next; |
| 537 | } |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 538 | fHead = fTail = nullptr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 539 | fBytesWritten = 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 540 | } |
| 541 | |
| 542 | bool SkDynamicMemoryWStream::write(const void* buffer, size_t count) |
| 543 | { |
| 544 | if (count > 0) { |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 545 | this->invalidateCopy(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 546 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 547 | fBytesWritten += count; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 548 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 549 | size_t size; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 550 | |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 551 | if (fTail != nullptr && fTail->avail() > 0) { |
commit-bot@chromium.org | f117781 | 2014-04-23 19:19:44 +0000 | [diff] [blame] | 552 | size = SkTMin(fTail->avail(), count); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 553 | buffer = fTail->append(buffer, size); |
| 554 | SkASSERT(count >= size); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 555 | count -= size; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 556 | if (count == 0) |
| 557 | return true; |
| 558 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 559 | |
commit-bot@chromium.org | f117781 | 2014-04-23 19:19:44 +0000 | [diff] [blame] | 560 | size = SkTMax<size_t>(count, SkDynamicMemoryWStream_MinBlockSize); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 561 | Block* block = (Block*)sk_malloc_throw(sizeof(Block) + size); |
| 562 | block->init(size); |
| 563 | block->append(buffer, count); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 564 | |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 565 | if (fTail != nullptr) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 566 | fTail->fNext = block; |
| 567 | else |
| 568 | fHead = fTail = block; |
| 569 | fTail = block; |
| 570 | } |
| 571 | return true; |
| 572 | } |
| 573 | |
| 574 | bool SkDynamicMemoryWStream::write(const void* buffer, size_t offset, size_t count) |
| 575 | { |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 576 | if (offset + count > fBytesWritten) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 577 | return false; // test does not partially modify |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 578 | } |
| 579 | |
| 580 | this->invalidateCopy(); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 581 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 582 | Block* block = fHead; |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 583 | while (block != nullptr) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 584 | size_t size = block->written(); |
| 585 | if (offset < size) { |
| 586 | size_t part = offset + count > size ? size - offset : count; |
| 587 | memcpy(block->start() + offset, buffer, part); |
| 588 | if (count <= part) |
| 589 | return true; |
| 590 | count -= part; |
| 591 | buffer = (const void*) ((char* ) buffer + part); |
| 592 | } |
| 593 | offset = offset > size ? offset - size : 0; |
| 594 | block = block->fNext; |
| 595 | } |
| 596 | return false; |
| 597 | } |
| 598 | |
| 599 | bool SkDynamicMemoryWStream::read(void* buffer, size_t offset, size_t count) |
| 600 | { |
| 601 | if (offset + count > fBytesWritten) |
| 602 | return false; // test does not partially modify |
| 603 | Block* block = fHead; |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 604 | while (block != nullptr) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 605 | size_t size = block->written(); |
| 606 | if (offset < size) { |
| 607 | size_t part = offset + count > size ? size - offset : count; |
| 608 | memcpy(buffer, block->start() + offset, part); |
| 609 | if (count <= part) |
| 610 | return true; |
| 611 | count -= part; |
| 612 | buffer = (void*) ((char* ) buffer + part); |
| 613 | } |
| 614 | offset = offset > size ? offset - size : 0; |
| 615 | block = block->fNext; |
| 616 | } |
| 617 | return false; |
| 618 | } |
| 619 | |
| 620 | void SkDynamicMemoryWStream::copyTo(void* dst) const |
| 621 | { |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 622 | if (fCopy) { |
| 623 | memcpy(dst, fCopy->data(), fBytesWritten); |
| 624 | } else { |
| 625 | Block* block = fHead; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 626 | |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 627 | while (block != nullptr) { |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 628 | size_t size = block->written(); |
| 629 | memcpy(dst, block->start(), size); |
| 630 | dst = (void*)((char*)dst + size); |
| 631 | block = block->fNext; |
| 632 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 633 | } |
| 634 | } |
| 635 | |
halcanary | 7af2150 | 2015-02-23 12:17:59 -0800 | [diff] [blame] | 636 | void SkDynamicMemoryWStream::writeToStream(SkWStream* dst) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 637 | for (Block* block = fHead; block != nullptr; block = block->fNext) { |
halcanary | 7af2150 | 2015-02-23 12:17:59 -0800 | [diff] [blame] | 638 | dst->write(block->start(), block->written()); |
| 639 | } |
| 640 | } |
| 641 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 642 | void SkDynamicMemoryWStream::padToAlign4() |
| 643 | { |
| 644 | // cast to remove unary-minus warning |
| 645 | int padBytes = -(int)fBytesWritten & 0x03; |
| 646 | if (padBytes == 0) |
| 647 | return; |
| 648 | int zero = 0; |
| 649 | write(&zero, padBytes); |
| 650 | } |
| 651 | |
reed@google.com | 8d0b577 | 2011-06-24 13:07:31 +0000 | [diff] [blame] | 652 | SkData* SkDynamicMemoryWStream::copyToData() const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 653 | if (nullptr == fCopy) { |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 654 | auto data = SkData::MakeUninitialized(fBytesWritten); |
reed | 33a3050 | 2014-09-11 08:42:36 -0700 | [diff] [blame] | 655 | // be sure to call copyTo() before we assign to fCopy |
| 656 | this->copyTo(data->writable_data()); |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 657 | fCopy = std::move(data); |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 658 | } |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 659 | return SkRef(fCopy.get()); |
reed@google.com | 70442a6 | 2011-06-23 21:48:04 +0000 | [diff] [blame] | 660 | } |
| 661 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 662 | void SkDynamicMemoryWStream::invalidateCopy() { |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 663 | fCopy = nullptr; |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 664 | } |
| 665 | |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 666 | class SkBlockMemoryRefCnt : public SkRefCnt { |
| 667 | public: |
| 668 | explicit SkBlockMemoryRefCnt(SkDynamicMemoryWStream::Block* head) : fHead(head) { } |
| 669 | |
| 670 | virtual ~SkBlockMemoryRefCnt() { |
| 671 | SkDynamicMemoryWStream::Block* block = fHead; |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 672 | while (block != nullptr) { |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 673 | SkDynamicMemoryWStream::Block* next = block->fNext; |
| 674 | sk_free(block); |
| 675 | block = next; |
| 676 | } |
| 677 | } |
| 678 | |
| 679 | SkDynamicMemoryWStream::Block* const fHead; |
| 680 | }; |
| 681 | |
| 682 | class SkBlockMemoryStream : public SkStreamAsset { |
| 683 | public: |
| 684 | SkBlockMemoryStream(SkDynamicMemoryWStream::Block* head, size_t size) |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 685 | : fBlockMemory(new SkBlockMemoryRefCnt(head)) |
| 686 | , fCurrent(head) |
| 687 | , fSize(size) |
| 688 | , fOffset(0) |
| 689 | , fCurrentOffset(0) {} |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 690 | |
| 691 | SkBlockMemoryStream(SkBlockMemoryRefCnt* headRef, size_t size) |
| 692 | : fBlockMemory(SkRef(headRef)), fCurrent(fBlockMemory->fHead) |
| 693 | , fSize(size) , fOffset(0), fCurrentOffset(0) { } |
| 694 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 695 | size_t read(void* buffer, size_t rawCount) override { |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 696 | size_t count = rawCount; |
| 697 | if (fOffset + count > fSize) { |
| 698 | count = fSize - fOffset; |
| 699 | } |
| 700 | size_t bytesLeftToRead = count; |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 701 | while (fCurrent != nullptr) { |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 702 | size_t bytesLeftInCurrent = fCurrent->written() - fCurrentOffset; |
bungeman@google.com | 8d79f96 | 2014-03-05 16:26:14 +0000 | [diff] [blame] | 703 | size_t bytesFromCurrent = SkTMin(bytesLeftToRead, bytesLeftInCurrent); |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 704 | if (buffer) { |
| 705 | memcpy(buffer, fCurrent->start() + fCurrentOffset, bytesFromCurrent); |
bungeman@google.com | 8d79f96 | 2014-03-05 16:26:14 +0000 | [diff] [blame] | 706 | buffer = SkTAddOffset<void>(buffer, bytesFromCurrent); |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 707 | } |
| 708 | if (bytesLeftToRead <= bytesFromCurrent) { |
| 709 | fCurrentOffset += bytesFromCurrent; |
| 710 | fOffset += count; |
| 711 | return count; |
| 712 | } |
| 713 | bytesLeftToRead -= bytesFromCurrent; |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 714 | fCurrent = fCurrent->fNext; |
| 715 | fCurrentOffset = 0; |
| 716 | } |
| 717 | SkASSERT(false); |
| 718 | return 0; |
| 719 | } |
| 720 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 721 | bool isAtEnd() const override { |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 722 | return fOffset == fSize; |
| 723 | } |
| 724 | |
scroggo | d61c384 | 2015-12-07 11:37:13 -0800 | [diff] [blame] | 725 | size_t peek(void* buff, size_t bytesToPeek) const override { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 726 | SkASSERT(buff != nullptr); |
scroggo | d61c384 | 2015-12-07 11:37:13 -0800 | [diff] [blame] | 727 | |
| 728 | bytesToPeek = SkTMin(bytesToPeek, fSize - fOffset); |
| 729 | |
| 730 | size_t bytesLeftToPeek = bytesToPeek; |
halcanary | e797d0d | 2015-05-21 08:13:27 -0700 | [diff] [blame] | 731 | char* buffer = static_cast<char*>(buff); |
| 732 | const SkDynamicMemoryWStream::Block* current = fCurrent; |
| 733 | size_t currentOffset = fCurrentOffset; |
scroggo | d61c384 | 2015-12-07 11:37:13 -0800 | [diff] [blame] | 734 | while (bytesLeftToPeek) { |
halcanary | e797d0d | 2015-05-21 08:13:27 -0700 | [diff] [blame] | 735 | SkASSERT(current); |
| 736 | size_t bytesFromCurrent = |
scroggo | d61c384 | 2015-12-07 11:37:13 -0800 | [diff] [blame] | 737 | SkTMin(current->written() - currentOffset, bytesLeftToPeek); |
halcanary | e797d0d | 2015-05-21 08:13:27 -0700 | [diff] [blame] | 738 | memcpy(buffer, current->start() + currentOffset, bytesFromCurrent); |
scroggo | d61c384 | 2015-12-07 11:37:13 -0800 | [diff] [blame] | 739 | bytesLeftToPeek -= bytesFromCurrent; |
halcanary | e797d0d | 2015-05-21 08:13:27 -0700 | [diff] [blame] | 740 | buffer += bytesFromCurrent; |
| 741 | current = current->fNext; |
| 742 | currentOffset = 0; |
| 743 | } |
scroggo | d61c384 | 2015-12-07 11:37:13 -0800 | [diff] [blame] | 744 | return bytesToPeek; |
halcanary | e797d0d | 2015-05-21 08:13:27 -0700 | [diff] [blame] | 745 | } |
| 746 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 747 | bool rewind() override { |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 748 | fCurrent = fBlockMemory->fHead; |
| 749 | fOffset = 0; |
| 750 | fCurrentOffset = 0; |
| 751 | return true; |
| 752 | } |
| 753 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 754 | SkBlockMemoryStream* duplicate() const override { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 755 | return new SkBlockMemoryStream(fBlockMemory.get(), fSize); |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 756 | } |
| 757 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 758 | size_t getPosition() const override { |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 759 | return fOffset; |
| 760 | } |
| 761 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 762 | bool seek(size_t position) override { |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 763 | // If possible, skip forward. |
| 764 | if (position >= fOffset) { |
| 765 | size_t skipAmount = position - fOffset; |
| 766 | return this->skip(skipAmount) == skipAmount; |
| 767 | } |
| 768 | // If possible, move backward within the current block. |
| 769 | size_t moveBackAmount = fOffset - position; |
| 770 | if (moveBackAmount <= fCurrentOffset) { |
| 771 | fCurrentOffset -= moveBackAmount; |
| 772 | fOffset -= moveBackAmount; |
| 773 | return true; |
| 774 | } |
| 775 | // Otherwise rewind and move forward. |
| 776 | return this->rewind() && this->skip(position) == position; |
| 777 | } |
| 778 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 779 | bool move(long offset) override { |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 780 | return seek(fOffset + offset); |
| 781 | } |
| 782 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 783 | SkBlockMemoryStream* fork() const override { |
scroggo | a1193e4 | 2015-01-21 12:09:53 -0800 | [diff] [blame] | 784 | SkAutoTDelete<SkBlockMemoryStream> that(this->duplicate()); |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 785 | that->fCurrent = this->fCurrent; |
| 786 | that->fOffset = this->fOffset; |
| 787 | that->fCurrentOffset = this->fCurrentOffset; |
mtklein | 18300a3 | 2016-03-16 13:53:35 -0700 | [diff] [blame^] | 788 | return that.release(); |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 789 | } |
| 790 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 791 | size_t getLength() const override { |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 792 | return fSize; |
| 793 | } |
| 794 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 795 | const void* getMemoryBase() override { |
halcanary | 209c162 | 2015-09-28 07:29:39 -0700 | [diff] [blame] | 796 | if (nullptr != fBlockMemory->fHead && |
| 797 | nullptr == fBlockMemory->fHead->fNext) { |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 798 | return fBlockMemory->fHead->start(); |
| 799 | } |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 800 | return nullptr; |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 801 | } |
| 802 | |
| 803 | private: |
| 804 | SkAutoTUnref<SkBlockMemoryRefCnt> const fBlockMemory; |
| 805 | SkDynamicMemoryWStream::Block const * fCurrent; |
| 806 | size_t const fSize; |
| 807 | size_t fOffset; |
| 808 | size_t fCurrentOffset; |
| 809 | }; |
| 810 | |
bungeman@google.com | c29f3d8 | 2013-07-19 22:32:11 +0000 | [diff] [blame] | 811 | SkStreamAsset* SkDynamicMemoryWStream::detachAsStream() { |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 812 | if (fCopy) { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 813 | SkMemoryStream* stream = new SkMemoryStream(fCopy); |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 814 | this->reset(); |
| 815 | return stream; |
| 816 | } |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 817 | SkBlockMemoryStream* stream = new SkBlockMemoryStream(fHead, fBytesWritten); |
bungeman@google.com | 88682b7 | 2013-07-19 13:55:41 +0000 | [diff] [blame] | 818 | fHead = 0; |
| 819 | this->reset(); |
| 820 | return stream; |
| 821 | } |
| 822 | |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 823 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 824 | |
| 825 | void SkDebugWStream::newline() |
| 826 | { |
humper@google.com | 7af56be | 2013-01-14 18:49:19 +0000 | [diff] [blame] | 827 | #if defined(SK_DEBUG) || defined(SK_DEVELOPER) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 828 | SkDebugf("\n"); |
commit-bot@chromium.org | 490fb6b | 2014-03-06 17:16:26 +0000 | [diff] [blame] | 829 | fBytesWritten++; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 830 | #endif |
| 831 | } |
| 832 | |
| 833 | bool SkDebugWStream::write(const void* buffer, size_t size) |
| 834 | { |
humper@google.com | 7af56be | 2013-01-14 18:49:19 +0000 | [diff] [blame] | 835 | #if defined(SK_DEBUG) || defined(SK_DEVELOPER) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 836 | char* s = new char[size+1]; |
| 837 | memcpy(s, buffer, size); |
| 838 | s[size] = 0; |
| 839 | SkDebugf("%s", s); |
| 840 | delete[] s; |
commit-bot@chromium.org | 0438645 | 2014-03-06 19:23:51 +0000 | [diff] [blame] | 841 | fBytesWritten += size; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 842 | #endif |
| 843 | return true; |
| 844 | } |
reed@google.com | e1575aa | 2013-03-18 21:08:46 +0000 | [diff] [blame] | 845 | |
| 846 | /////////////////////////////////////////////////////////////////////////////// |
| 847 | /////////////////////////////////////////////////////////////////////////////// |
| 848 | |
commit-bot@chromium.org | 9711e44 | 2013-04-24 20:03:00 +0000 | [diff] [blame] | 849 | |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 850 | static sk_sp<SkData> mmap_filename(const char path[]) { |
halcanary | d76be9c | 2015-11-20 13:47:49 -0800 | [diff] [blame] | 851 | FILE* file = sk_fopen(path, kRead_SkFILE_Flag); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 852 | if (nullptr == file) { |
| 853 | return nullptr; |
reed@google.com | e1575aa | 2013-03-18 21:08:46 +0000 | [diff] [blame] | 854 | } |
skia.committer@gmail.com | 8eaddb0 | 2013-03-19 07:15:10 +0000 | [diff] [blame] | 855 | |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 856 | auto data = SkData::MakeFromFILE(file); |
commit-bot@chromium.org | 9711e44 | 2013-04-24 20:03:00 +0000 | [diff] [blame] | 857 | sk_fclose(file); |
| 858 | return data; |
reed@google.com | e1575aa | 2013-03-18 21:08:46 +0000 | [diff] [blame] | 859 | } |
| 860 | |
bungeman@google.com | 6cab1a4 | 2013-05-29 13:43:31 +0000 | [diff] [blame] | 861 | SkStreamAsset* SkStream::NewFromFile(const char path[]) { |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 862 | auto data(mmap_filename(path)); |
| 863 | if (data) { |
| 864 | return new SkMemoryStream(std::move(data)); |
reed@google.com | e1575aa | 2013-03-18 21:08:46 +0000 | [diff] [blame] | 865 | } |
skia.committer@gmail.com | 8eaddb0 | 2013-03-19 07:15:10 +0000 | [diff] [blame] | 866 | |
reed@google.com | e1575aa | 2013-03-18 21:08:46 +0000 | [diff] [blame] | 867 | // If we get here, then our attempt at using mmap failed, so try normal |
| 868 | // file access. |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 869 | SkFILEStream* stream = new SkFILEStream(path); |
reed@google.com | e1575aa | 2013-03-18 21:08:46 +0000 | [diff] [blame] | 870 | if (!stream->isValid()) { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 871 | delete stream; |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 872 | stream = nullptr; |
reed@google.com | e1575aa | 2013-03-18 21:08:46 +0000 | [diff] [blame] | 873 | } |
| 874 | return stream; |
| 875 | } |
halcanary | 67ec1f8 | 2014-06-27 11:36:20 -0700 | [diff] [blame] | 876 | |
| 877 | // Declared in SkStreamPriv.h: |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 878 | sk_sp<SkData> SkCopyStreamToData(SkStream* stream) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 879 | SkASSERT(stream != nullptr); |
halcanary | 67ec1f8 | 2014-06-27 11:36:20 -0700 | [diff] [blame] | 880 | |
| 881 | if (stream->hasLength()) { |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 882 | return SkData::MakeFromStream(stream, stream->getLength()); |
halcanary | 67ec1f8 | 2014-06-27 11:36:20 -0700 | [diff] [blame] | 883 | } |
| 884 | |
| 885 | SkDynamicMemoryWStream tempStream; |
msarett | 5534312 | 2016-01-27 12:06:22 -0800 | [diff] [blame] | 886 | const size_t bufferSize = 4096; |
| 887 | char buffer[bufferSize]; |
| 888 | do { |
| 889 | size_t bytesRead = stream->read(buffer, bufferSize); |
| 890 | tempStream.write(buffer, bytesRead); |
| 891 | } while (!stream->isAtEnd()); |
reed | fde0511 | 2016-03-11 13:02:28 -0800 | [diff] [blame] | 892 | return sk_sp<SkData>(tempStream.copyToData()); |
halcanary | 67ec1f8 | 2014-06-27 11:36:20 -0700 | [diff] [blame] | 893 | } |
halcanary | e322482 | 2014-07-14 09:12:12 -0700 | [diff] [blame] | 894 | |
halcanary | 48305e8 | 2015-08-18 13:30:25 -0700 | [diff] [blame] | 895 | bool SkStreamCopy(SkWStream* out, SkStream* input) { |
| 896 | const char* base = static_cast<const char*>(input->getMemoryBase()); |
| 897 | if (base && input->hasPosition() && input->hasLength()) { |
| 898 | // Shortcut that avoids the while loop. |
| 899 | size_t position = input->getPosition(); |
| 900 | size_t length = input->getLength(); |
| 901 | SkASSERT(length >= position); |
| 902 | return out->write(&base[position], length - position); |
| 903 | } |
| 904 | char scratch[4096]; |
| 905 | size_t count; |
| 906 | while (true) { |
| 907 | count = input->read(scratch, sizeof(scratch)); |
| 908 | if (0 == count) { |
| 909 | return true; |
| 910 | } |
| 911 | if (!out->write(scratch, count)) { |
| 912 | return false; |
| 913 | } |
| 914 | } |
| 915 | } |