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FlutterStandardCodecHelper.cc File Reference
#include "flutter/shell/platform/darwin/common/framework/Source/FlutterStandardCodecHelper.h"
#include <stdint.h>
#include <vector>
#include "flutter/fml/logging.h"

Go to the source code of this file.

Functions

void FlutterStandardCodecHelperReadAlignment (unsigned long *location, uint8_t alignment)
 
static uint8_t PeekByte (unsigned long location, CFDataRef data)
 
void FlutterStandardCodecHelperReadBytes (unsigned long *location, unsigned long length, void *destination, CFDataRef data)
 
uint8_t FlutterStandardCodecHelperReadByte (unsigned long *location, CFDataRef data)
 
uint32_t FlutterStandardCodecHelperReadSize (unsigned long *location, CFDataRef data)
 
static CFDataRef ReadDataNoCopy (unsigned long *location, unsigned long length, CFDataRef data)
 
CFStringRef FlutterStandardCodecHelperReadUTF8 (unsigned long *location, CFDataRef data)
 
static CFTypeRef FastReadValue (unsigned long *location, CFDataRef data, CFTypeRef(*ReadValue)(CFTypeRef), CFTypeRef(*ReadTypedDataOfType)(FlutterStandardField, CFTypeRef), CFTypeRef user_data)
 
CFTypeRef FlutterStandardCodecHelperReadValueOfType (unsigned long *location, CFDataRef data, uint8_t type, CFTypeRef(*ReadValue)(CFTypeRef), CFTypeRef(*ReadTypedDataOfType)(FlutterStandardField, CFTypeRef), CFTypeRef user_data)
 
void FlutterStandardCodecHelperWriteByte (CFMutableDataRef data, uint8_t value)
 
void FlutterStandardCodecHelperWriteBytes (CFMutableDataRef data, const void *bytes, unsigned long length)
 
void FlutterStandardCodecHelperWriteSize (CFMutableDataRef data, uint32_t size)
 
void FlutterStandardCodecHelperWriteAlignment (CFMutableDataRef data, uint8_t alignment)
 
void FlutterStandardCodecHelperWriteUTF8 (CFMutableDataRef data, CFStringRef value)
 
void FlutterStandardCodecHelperWriteData (CFMutableDataRef data, CFDataRef value)
 
bool FlutterStandardCodecHelperWriteNumber (CFMutableDataRef data, CFNumberRef number)
 

Function Documentation

◆ FastReadValue()

static CFTypeRef FastReadValue ( unsigned long *  location,
CFDataRef  data,
CFTypeRef(*)(CFTypeRef)  ReadValue,
CFTypeRef(*)(FlutterStandardField, CFTypeRef)  ReadTypedDataOfType,
CFTypeRef  user_data 
)
inlinestatic

Definition at line 87 of file FlutterStandardCodecHelper.cc.

92 {
93 uint8_t type = PeekByte(*location, data);
94 if (FlutterStandardFieldIsStandardType(type)) {
95 *location += 1;
96 return FlutterStandardCodecHelperReadValueOfType(
97 location, data, type, ReadValue, ReadTypedDataOfType, user_data);
98 } else {
99 return ReadValue(user_data);
100 }
101}
PeekByte
static uint8_t PeekByte(unsigned long location, CFDataRef data)
Definition FlutterStandardCodecHelper.cc:26
FlutterStandardCodecHelperReadValueOfType
CFTypeRef FlutterStandardCodecHelperReadValueOfType(unsigned long *location, CFDataRef data, uint8_t type, CFTypeRef(*ReadValue)(CFTypeRef), CFTypeRef(*ReadTypedDataOfType)(FlutterStandardField, CFTypeRef), CFTypeRef user_data)
Definition FlutterStandardCodecHelper.cc:103
FlutterStandardFieldIsStandardType
static bool FlutterStandardFieldIsStandardType(uint8_t field)
Definition FlutterStandardCodecHelper.h:39
type
GLenum type
Definition blit_command_gles.cc:153
data
std::shared_ptr< const fml::Mapping > data
Definition texture_gles.cc:68
user_data
void * user_data
Definition texture_registrar_unittests.cc:27

References data, FlutterStandardCodecHelperReadValueOfType(), FlutterStandardFieldIsStandardType(), PeekByte(), type, and user_data.

Referenced by FlutterStandardCodecHelperReadValueOfType().

◆ FlutterStandardCodecHelperReadAlignment()

void FlutterStandardCodecHelperReadAlignment ( unsigned long *  location,
uint8_t  alignment 
)

Definition at line 18 of file FlutterStandardCodecHelper.cc.

19 {
20 uint8_t mod = *location % alignment;
21 if (mod) {
22 *location += (alignment - mod);
23 }
24}

Referenced by FlutterStandardCodecHelperReadValueOfType(), and FlutterStandardReaderWriter::readerWithData:.

◆ FlutterStandardCodecHelperReadByte()

uint8_t FlutterStandardCodecHelperReadByte ( unsigned long *  location,
CFDataRef  data 
)

Definition at line 42 of file FlutterStandardCodecHelper.cc.

43 {
44 uint8_t value;
45 FlutterStandardCodecHelperReadBytes(location, 1, &value, data);
46 return value;
47}
FlutterStandardCodecHelperReadBytes
void FlutterStandardCodecHelperReadBytes(unsigned long *location, unsigned long length, void *destination, CFDataRef data)
Definition FlutterStandardCodecHelper.cc:33
value
int32_t value
Definition dl_golden_unittests.cc:459

References data, FlutterStandardCodecHelperReadBytes(), and value.

Referenced by FlutterStandardCodecHelperReadSize().

◆ FlutterStandardCodecHelperReadBytes()

void FlutterStandardCodecHelperReadBytes ( unsigned long *  location,
unsigned long  length,
void *  destination,
CFDataRef  data 
)

Definition at line 33 of file FlutterStandardCodecHelper.cc.

36 {
37 CFRange range = CFRangeMake(*location, length);
38 CFDataGetBytes(data, range, static_cast<UInt8*>(destination));
39 *location += length;
40}
length
size_t length
Definition key_event_handler.cc:41

References data, and length.

Referenced by FlutterStandardCodecHelperReadByte(), FlutterStandardCodecHelperReadSize(), and FlutterStandardCodecHelperReadValueOfType().

◆ FlutterStandardCodecHelperReadSize()

uint32_t FlutterStandardCodecHelperReadSize ( unsigned long *  location,
CFDataRef  data 
)

Definition at line 49 of file FlutterStandardCodecHelper.cc.

50 {
51 uint8_t byte = FlutterStandardCodecHelperReadByte(location, data);
52 if (byte < 254) {
53 return static_cast<uint32_t>(byte);
54 } else if (byte == 254) {
55 UInt16 value;
56 FlutterStandardCodecHelperReadBytes(location, 2, &value, data);
57 return value;
58 } else {
59 UInt32 value;
60 FlutterStandardCodecHelperReadBytes(location, 4, &value, data);
61 return value;
62 }
63}
FlutterStandardCodecHelperReadByte
uint8_t FlutterStandardCodecHelperReadByte(unsigned long *location, CFDataRef data)
Definition FlutterStandardCodecHelper.cc:42

References data, FlutterStandardCodecHelperReadByte(), FlutterStandardCodecHelperReadBytes(), and value.

Referenced by FlutterStandardCodecHelperReadUTF8(), FlutterStandardCodecHelperReadValueOfType(), and FlutterStandardReaderWriter::readerWithData:.

◆ FlutterStandardCodecHelperReadUTF8()

CFStringRef FlutterStandardCodecHelperReadUTF8 ( unsigned long *  location,
CFDataRef  data 
)

Definition at line 75 of file FlutterStandardCodecHelper.cc.

76 {
77 uint32_t size = FlutterStandardCodecHelperReadSize(location, data);
78 CFDataRef bytes = ReadDataNoCopy(location, size, data);
79 CFStringRef result = CFStringCreateFromExternalRepresentation(
80 kCFAllocatorDefault, bytes, kCFStringEncodingUTF8);
81 return static_cast<CFStringRef>(CFAutorelease(result));
82}
FlutterStandardCodecHelperReadSize
uint32_t FlutterStandardCodecHelperReadSize(unsigned long *location, CFDataRef data)
Definition FlutterStandardCodecHelper.cc:49
ReadDataNoCopy
static CFDataRef ReadDataNoCopy(unsigned long *location, unsigned long length, CFDataRef data)
Definition FlutterStandardCodecHelper.cc:65
flutter::size
it will be possible to load the file into Perfetto s trace viewer use test Running tests that layout and measure text will not yield consistent results across various platforms Enabling this option will make font resolution default to the Ahem test font on all disable asset Prevents usage of any non test fonts unless they were explicitly Loaded via prefetched default font Indicates whether the embedding started a prefetch of the default font manager before creating the engine run In non interactive keep the shell running after the Dart script has completed enable serial On low power devices with low core running concurrent GC tasks on threads can cause them to contend with the UI thread which could potentially lead to jank This option turns off all concurrent GC activities domain network JSON encoded network policy per domain This overrides the DisallowInsecureConnections switch Embedder can specify whether to allow or disallow insecure connections at a domain level old gen heap size
Definition switch_defs.h:241

References data, FlutterStandardCodecHelperReadSize(), and ReadDataNoCopy().

Referenced by FlutterStandardCodecHelperReadValueOfType().

◆ FlutterStandardCodecHelperReadValueOfType()

CFTypeRef FlutterStandardCodecHelperReadValueOfType ( unsigned long *  location,
CFDataRef  data,
uint8_t  type,
CFTypeRef(*)(CFTypeRef)  ReadValue,
CFTypeRef(*)(FlutterStandardField, CFTypeRef)  ReadTypedDataOfType,
CFTypeRef  user_data 
)

Definition at line 103 of file FlutterStandardCodecHelper.cc.

109 {
110 FlutterStandardField field = static_cast<FlutterStandardField>(type);
111 switch (field) {
112 case FlutterStandardFieldNil:
113 return nil;
114 case FlutterStandardFieldTrue:
115 return kCFBooleanTrue;
116 case FlutterStandardFieldFalse:
117 return kCFBooleanFalse;
118 case FlutterStandardFieldInt32: {
119 int32_t value;
120 FlutterStandardCodecHelperReadBytes(location, 4, &value, data);
121 return CFAutorelease(
122 CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &value));
123 }
124 case FlutterStandardFieldInt64: {
125 int64_t value;
126 FlutterStandardCodecHelperReadBytes(location, 8, &value, data);
127 return CFAutorelease(
128 CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt64Type, &value));
129 }
130 case FlutterStandardFieldFloat64: {
131 Float64 value;
132 FlutterStandardCodecHelperReadAlignment(location, 8);
133 FlutterStandardCodecHelperReadBytes(location, 8, &value, data);
134 return CFAutorelease(
135 CFNumberCreate(kCFAllocatorDefault, kCFNumberDoubleType, &value));
136 }
137 case FlutterStandardFieldIntHex:
138 case FlutterStandardFieldString:
139 return FlutterStandardCodecHelperReadUTF8(location, data);
140 case FlutterStandardFieldUInt8Data:
141 case FlutterStandardFieldInt32Data:
142 case FlutterStandardFieldInt64Data:
143 case FlutterStandardFieldFloat32Data:
144 case FlutterStandardFieldFloat64Data:
145 return ReadTypedDataOfType(field, user_data);
146 case FlutterStandardFieldList: {
147 UInt32 length = FlutterStandardCodecHelperReadSize(location, data);
148 CFMutableArrayRef array = CFArrayCreateMutable(
149 kCFAllocatorDefault, length, &kCFTypeArrayCallBacks);
150 for (UInt32 i = 0; i < length; i++) {
151 CFTypeRef value = FastReadValue(location, data, ReadValue,
152 ReadTypedDataOfType, user_data);
153 CFArrayAppendValue(array, (value == nil ? kCFNull : value));
154 }
155 return CFAutorelease(array);
156 }
157 case FlutterStandardFieldMap: {
158 UInt32 size = FlutterStandardCodecHelperReadSize(location, data);
159 CFMutableDictionaryRef dict = CFDictionaryCreateMutable(
160 kCFAllocatorDefault, size, &kCFTypeDictionaryKeyCallBacks,
161 &kCFTypeDictionaryValueCallBacks);
162 for (UInt32 i = 0; i < size; i++) {
163 CFTypeRef key = FastReadValue(location, data, ReadValue,
164 ReadTypedDataOfType, user_data);
165 CFTypeRef val = FastReadValue(location, data, ReadValue,
166 ReadTypedDataOfType, user_data);
167 CFDictionaryAddValue(dict, (key == nil ? kCFNull : key),
168 (val == nil ? kCFNull : val));
169 }
170 return CFAutorelease(dict);
171 }
172 default:
173 // Malformed message.
174 FML_DCHECK(false);
175 }
176}
FlutterStandardCodecHelperReadUTF8
CFStringRef FlutterStandardCodecHelperReadUTF8(unsigned long *location, CFDataRef data)
Definition FlutterStandardCodecHelper.cc:75
FlutterStandardCodecHelperReadAlignment
void FlutterStandardCodecHelperReadAlignment(unsigned long *location, uint8_t alignment)
Definition FlutterStandardCodecHelper.cc:18
FastReadValue
static CFTypeRef FastReadValue(unsigned long *location, CFDataRef data, CFTypeRef(*ReadValue)(CFTypeRef), CFTypeRef(*ReadTypedDataOfType)(FlutterStandardField, CFTypeRef), CFTypeRef user_data)
Definition FlutterStandardCodecHelper.cc:87
FlutterStandardFieldUInt8Data
@ FlutterStandardFieldUInt8Data
Definition FlutterStandardCodecHelper.h:29
FlutterStandardFieldFloat64
@ FlutterStandardFieldFloat64
Definition FlutterStandardCodecHelper.h:27
FlutterStandardFieldFloat32Data
@ FlutterStandardFieldFloat32Data
Definition FlutterStandardCodecHelper.h:35
FlutterStandardFieldIntHex
@ FlutterStandardFieldIntHex
Definition FlutterStandardCodecHelper.h:26
FlutterStandardFieldMap
@ FlutterStandardFieldMap
Definition FlutterStandardCodecHelper.h:34
FlutterStandardFieldInt64Data
@ FlutterStandardFieldInt64Data
Definition FlutterStandardCodecHelper.h:31
FlutterStandardFieldList
@ FlutterStandardFieldList
Definition FlutterStandardCodecHelper.h:33
FlutterStandardFieldInt32
@ FlutterStandardFieldInt32
Definition FlutterStandardCodecHelper.h:24
FlutterStandardFieldNil
@ FlutterStandardFieldNil
Definition FlutterStandardCodecHelper.h:21
FlutterStandardFieldTrue
@ FlutterStandardFieldTrue
Definition FlutterStandardCodecHelper.h:22
FlutterStandardFieldString
@ FlutterStandardFieldString
Definition FlutterStandardCodecHelper.h:28
FlutterStandardFieldFalse
@ FlutterStandardFieldFalse
Definition FlutterStandardCodecHelper.h:23
FlutterStandardFieldInt32Data
@ FlutterStandardFieldInt32Data
Definition FlutterStandardCodecHelper.h:30
FlutterStandardFieldInt64
@ FlutterStandardFieldInt64
Definition FlutterStandardCodecHelper.h:25
FlutterStandardFieldFloat64Data
@ FlutterStandardFieldFloat64Data
Definition FlutterStandardCodecHelper.h:32
i
int i
Definition fl_socket_accessible.cc:18
FML_DCHECK
#define FML_DCHECK(condition)
Definition logging.h:122
key
int key
Definition keyboard_key_handler_unittests.cc:114

References data, FastReadValue(), FlutterStandardCodecHelperReadAlignment(), FlutterStandardCodecHelperReadBytes(), FlutterStandardCodecHelperReadSize(), FlutterStandardCodecHelperReadUTF8(), FlutterStandardFieldFalse, FlutterStandardFieldFloat32Data, FlutterStandardFieldFloat64, FlutterStandardFieldFloat64Data, FlutterStandardFieldInt32, FlutterStandardFieldInt32Data, FlutterStandardFieldInt64, FlutterStandardFieldInt64Data, FlutterStandardFieldIntHex, FlutterStandardFieldList, FlutterStandardFieldMap, FlutterStandardFieldNil, FlutterStandardFieldString, FlutterStandardFieldTrue, FlutterStandardFieldUInt8Data, FML_DCHECK, i, key, length, type, user_data, and value.

Referenced by FastReadValue().

◆ FlutterStandardCodecHelperWriteAlignment()

void FlutterStandardCodecHelperWriteAlignment ( CFMutableDataRef  data,
uint8_t  alignment 
)

Definition at line 201 of file FlutterStandardCodecHelper.cc.

202 {
203 uint8_t mod = CFDataGetLength(data) % alignment;
204 if (mod) {
205 for (int i = 0; i < (alignment - mod); i++) {
206 FlutterStandardCodecHelperWriteByte(data, 0);
207 }
208 }
209}
FlutterStandardCodecHelperWriteByte
void FlutterStandardCodecHelperWriteByte(CFMutableDataRef data, uint8_t value)
Definition FlutterStandardCodecHelper.cc:178

References data, FlutterStandardCodecHelperWriteByte(), and i.

Referenced by FlutterStandardCodecHelperWriteNumber(), and FlutterStandardWriter::writeValue:.

◆ FlutterStandardCodecHelperWriteByte()

void FlutterStandardCodecHelperWriteByte ( CFMutableDataRef  data,
uint8_t  value 
)

Definition at line 178 of file FlutterStandardCodecHelper.cc.

178 {
179 CFDataAppendBytes(data, &value, 1);
180}

References data, and value.

Referenced by FlutterStandardCodecHelperWriteAlignment(), FlutterStandardCodecHelperWriteNumber(), FlutterStandardCodecHelperWriteSize(), and FlutterStandardWriter::writeValue:.

◆ FlutterStandardCodecHelperWriteBytes()

void FlutterStandardCodecHelperWriteBytes ( CFMutableDataRef  data,
const void *  bytes,
unsigned long  length 
)

Definition at line 182 of file FlutterStandardCodecHelper.cc.

184 {
185 CFDataAppendBytes(data, static_cast<const UInt8*>(bytes), length);
186}

References data, and length.

Referenced by FlutterStandardCodecHelperWriteData(), FlutterStandardCodecHelperWriteNumber(), FlutterStandardCodecHelperWriteSize(), and FlutterStandardCodecHelperWriteUTF8().

◆ FlutterStandardCodecHelperWriteData()

void FlutterStandardCodecHelperWriteData ( CFMutableDataRef  data,
CFDataRef  value 
)

Definition at line 232 of file FlutterStandardCodecHelper.cc.

233 {
234 const UInt8* bytes = CFDataGetBytePtr(value);
235 CFIndex length = CFDataGetLength(value);
236 FlutterStandardCodecHelperWriteBytes(data, bytes, length);
237}
FlutterStandardCodecHelperWriteBytes
void FlutterStandardCodecHelperWriteBytes(CFMutableDataRef data, const void *bytes, unsigned long length)
Definition FlutterStandardCodecHelper.cc:182

References data, FlutterStandardCodecHelperWriteBytes(), length, and value.

Referenced by FlutterStandardWriter::writeValue:.

◆ FlutterStandardCodecHelperWriteNumber()

bool FlutterStandardCodecHelperWriteNumber ( CFMutableDataRef  data,
CFNumberRef  number 
)

Definition at line 239 of file FlutterStandardCodecHelper.cc.

240 {
241 bool success = false;
242 if (CFGetTypeID(number) == CFBooleanGetTypeID()) {
243 bool b = CFBooleanGetValue(reinterpret_cast<CFBooleanRef>(number));
244 FlutterStandardCodecHelperWriteByte(
245 data, (b ? FlutterStandardFieldTrue : FlutterStandardFieldFalse));
246 success = true;
247 } else if (CFNumberIsFloatType(number)) {
248 Float64 f;
249 success = CFNumberGetValue(number, kCFNumberFloat64Type, &f);
250 if (success) {
251 FlutterStandardCodecHelperWriteByte(data, FlutterStandardFieldFloat64);
252 FlutterStandardCodecHelperWriteAlignment(data, 8);
253 FlutterStandardCodecHelperWriteBytes(data, &f, 8);
254 }
255 } else if (CFNumberGetByteSize(number) <= 4) {
256 SInt32 n;
257 success = CFNumberGetValue(number, kCFNumberSInt32Type, &n);
258 if (success) {
259 FlutterStandardCodecHelperWriteByte(data, FlutterStandardFieldInt32);
260 FlutterStandardCodecHelperWriteBytes(data, &n, 4);
261 }
262 } else if (CFNumberGetByteSize(number) <= 8) {
263 SInt64 n;
264 success = CFNumberGetValue(number, kCFNumberSInt64Type, &n);
265 if (success) {
266 FlutterStandardCodecHelperWriteByte(data, FlutterStandardFieldInt64);
267 FlutterStandardCodecHelperWriteBytes(data, &n, 8);
268 }
269 }
270 return success;
271}
FlutterStandardCodecHelperWriteAlignment
void FlutterStandardCodecHelperWriteAlignment(CFMutableDataRef data, uint8_t alignment)
Definition FlutterStandardCodecHelper.cc:201

References data, FlutterStandardCodecHelperWriteAlignment(), FlutterStandardCodecHelperWriteByte(), FlutterStandardCodecHelperWriteBytes(), FlutterStandardFieldFalse, FlutterStandardFieldFloat64, FlutterStandardFieldInt32, FlutterStandardFieldInt64, and FlutterStandardFieldTrue.

Referenced by FlutterStandardWriter::writeValue:.

◆ FlutterStandardCodecHelperWriteSize()

void FlutterStandardCodecHelperWriteSize ( CFMutableDataRef  data,
uint32_t  size 
)

Definition at line 188 of file FlutterStandardCodecHelper.cc.

188 {
189 if (size < 254) {
190 FlutterStandardCodecHelperWriteByte(data, size);
191 } else if (size <= 0xffff) {
192 FlutterStandardCodecHelperWriteByte(data, 254);
193 UInt16 value = static_cast<UInt16>(size);
194 FlutterStandardCodecHelperWriteBytes(data, &value, 2);
195 } else {
196 FlutterStandardCodecHelperWriteByte(data, 255);
197 FlutterStandardCodecHelperWriteBytes(data, &size, 4);
198 }
199}

References data, FlutterStandardCodecHelperWriteByte(), FlutterStandardCodecHelperWriteBytes(), and value.

Referenced by FlutterStandardCodecHelperWriteUTF8(), and FlutterStandardWriter::writeValue:.

◆ FlutterStandardCodecHelperWriteUTF8()

void FlutterStandardCodecHelperWriteUTF8 ( CFMutableDataRef  data,
CFStringRef  value 
)

Definition at line 211 of file FlutterStandardCodecHelper.cc.

212 {
213 const char* utf8 = CFStringGetCStringPtr(value, kCFStringEncodingUTF8);
214 if (utf8) {
215 size_t length = strlen(utf8);
216 FlutterStandardCodecHelperWriteSize(data, length);
217 FlutterStandardCodecHelperWriteBytes(data, utf8, length);
218 } else {
219 CFIndex length = CFStringGetLength(value);
220 CFIndex used_length = 0;
221 // UTF16 length times 3 will fit all UTF8.
222 CFIndex buffer_length = length * 3;
223 std::vector<UInt8> buffer;
224 buffer.resize(buffer_length);
225 CFStringGetBytes(value, CFRangeMake(0, length), kCFStringEncodingUTF8, 0,
226 false, buffer.data(), buffer_length, &used_length);
227 FlutterStandardCodecHelperWriteSize(data, used_length);
228 FlutterStandardCodecHelperWriteBytes(data, buffer.data(), used_length);
229 }
230}
FlutterStandardCodecHelperWriteSize
void FlutterStandardCodecHelperWriteSize(CFMutableDataRef data, uint32_t size)
Definition FlutterStandardCodecHelper.cc:188
flutter::buffer
DEF_SWITCHES_START aot vmservice shared library Name of the *so containing AOT compiled Dart assets for launching the service isolate vm snapshot The VM snapshot data that will be memory mapped as read only SnapshotAssetPath must be present isolate snapshot The isolate snapshot data that will be memory mapped as read only SnapshotAssetPath must be present cache dir Path to the cache directory This is different from the persistent_cache_path in embedder which is used for Skia shader cache icu native lib Path to the library file that exports the ICU data vm service The hostname IP address on which the Dart VM Service should be served If not defaults to or::depending on whether ipv6 is specified disable vm Disable the Dart VM Service The Dart VM Service is never available in release mode Bind to the IPv6 localhost address for the Dart VM Service Ignored if vm service host is set profile Make the profiler discard new samples once the profiler sample buffer is full When this flag is not the profiler sample buffer is used as a ring buffer
Definition switch_defs.h:98

References data, FlutterStandardCodecHelperWriteBytes(), FlutterStandardCodecHelperWriteSize(), length, and value.

Referenced by FlutterStandardWriter::writeValue:.

◆ PeekByte()

static uint8_t PeekByte ( unsigned long  location,
CFDataRef  data 
)
static

Definition at line 26 of file FlutterStandardCodecHelper.cc.

26 {
27 uint8_t result;
28 CFRange range = CFRangeMake(location, 1);
29 CFDataGetBytes(data, range, &result);
30 return result;
31}

References data.

Referenced by FastReadValue().

◆ ReadDataNoCopy()

static CFDataRef ReadDataNoCopy ( unsigned long *  location,
unsigned long  length,
CFDataRef  data 
)
static

Definition at line 65 of file FlutterStandardCodecHelper.cc.

67 {
68 CFDataRef result = CFDataCreateWithBytesNoCopy(
69 kCFAllocatorDefault, CFDataGetBytePtr(data) + *location, length,
70 kCFAllocatorNull);
71 *location += length;
72 return static_cast<CFDataRef>(CFAutorelease(result));
73}

References data, and length.

Referenced by FlutterStandardCodecHelperReadUTF8().