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fl_standard_message_codec.cc
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "flutter/shell/platform/linux/public/flutter_linux/fl_standard_message_codec.h"
6 #include "flutter/shell/platform/linux/fl_standard_message_codec_private.h"
7
8 #include <gmodule.h>
9
10 #include <cstring>
11
12 // See lib/src/services/message_codecs.dart in Flutter source for description of
13 // encoding.
14
15 // Type values.
16 static constexpr int kValueNull = 0;
17 static constexpr int kValueTrue = 1;
18 static constexpr int kValueFalse = 2;
19 static constexpr int kValueInt32 = 3;
20 static constexpr int kValueInt64 = 4;
21 static constexpr int kValueFloat64 = 6;
22 static constexpr int kValueString = 7;
23 static constexpr int kValueUint8List = 8;
24 static constexpr int kValueInt32List = 9;
25 static constexpr int kValueInt64List = 10;
26 static constexpr int kValueFloat64List = 11;
27 static constexpr int kValueList = 12;
28 static constexpr int kValueMap = 13;
29 static constexpr int kValueFloat32List = 14;
30
31 struct _FlStandardMessageCodec {
32 FlMessageCodec parent_instance;
33 };
34
35 G_DEFINE_TYPE(FlStandardMessageCodec,
36 fl_standard_message_codec,
37 fl_message_codec_get_type())
38
39 // Functions to write standard C number types.
40
41 static void write_uint8(GByteArray* buffer, uint8_t value) {
42 g_byte_array_append(buffer, &value, sizeof(uint8_t));
43 }
44
45 static void write_uint16(GByteArray* buffer, uint16_t value) {
46 g_byte_array_append(buffer, reinterpret_cast<uint8_t*>(&value),
47 sizeof(uint16_t));
48 }
49
50 static void write_uint32(GByteArray* buffer, uint32_t value) {
51 g_byte_array_append(buffer, reinterpret_cast<uint8_t*>(&value),
52 sizeof(uint32_t));
53 }
54
55 static void write_int32(GByteArray* buffer, int32_t value) {
56 g_byte_array_append(buffer, reinterpret_cast<uint8_t*>(&value),
57 sizeof(int32_t));
58 }
59
60 static void write_int64(GByteArray* buffer, int64_t value) {
61 g_byte_array_append(buffer, reinterpret_cast<uint8_t*>(&value),
62 sizeof(int64_t));
63 }
64
65 static void write_float64(GByteArray* buffer, double value) {
66 g_byte_array_append(buffer, reinterpret_cast<uint8_t*>(&value),
67 sizeof(double));
68 }
69
70 // Write padding bytes to align to @align multiple of bytes.
71 static void write_align(GByteArray* buffer, guint align) {
72 while (buffer->len % align != 0) {
73 write_uint8(buffer, 0);
74 }
75 }
76
77 // Checks there is enough data in @buffer to be read.
78 static gboolean check_size(GBytes* buffer,
79 size_t offset,
80 size_t required,
81 GError** error) {
82 if (offset + required > g_bytes_get_size(buffer)) {
83 g_set_error(error, FL_MESSAGE_CODEC_ERROR,
84 FL_MESSAGE_CODEC_ERROR_OUT_OF_DATA, "Unexpected end of data");
85 return FALSE;
86 }
87 return TRUE;
88 }
89
90 // Skip bytes to align next read on @align multiple of bytes.
91 static gboolean read_align(GBytes* buffer,
92 size_t* offset,
93 size_t align,
94 GError** error) {
95 if ((*offset) % align == 0) {
96 return TRUE;
97 }
98
99 size_t required = align - (*offset) % align;
100 if (!check_size(buffer, *offset, required, error)) {
101 return FALSE;
102 }
103
104 (*offset) += required;
105 return TRUE;
106 }
107
108 // Gets a pointer to the given offset in @buffer.
109 static const uint8_t* get_data(GBytes* buffer, size_t* offset) {
110 return static_cast<const uint8_t*>(g_bytes_get_data(buffer, nullptr)) +
111 *offset;
112 }
113
114 // Reads an unsigned 8 bit number from @buffer and writes it to @value.
115 // Returns TRUE if successful, otherwise sets an error.
116 static gboolean read_uint8(GBytes* buffer,
117 size_t* offset,
118 uint8_t* value,
119 GError** error) {
120 if (!check_size(buffer, *offset, sizeof(uint8_t), error)) {
121 return FALSE;
122 }
123
124 *value = get_data(buffer, offset)[0];
125 (*offset)++;
126 return TRUE;
127 }
128
129 // Reads an unsigned 16 bit integer from @buffer and writes it to @value.
130 // Returns TRUE if successful, otherwise sets an error.
131 static gboolean read_uint16(GBytes* buffer,
132 size_t* offset,
133 uint16_t* value,
134 GError** error) {
135 if (!check_size(buffer, *offset, sizeof(uint16_t), error)) {
136 return FALSE;
137 }
138
139 *value = reinterpret_cast<const uint16_t*>(get_data(buffer, offset))[0];
140 *offset += sizeof(uint16_t);
141 return TRUE;
142 }
143
144 // Reads an unsigned 32 bit integer from @buffer and writes it to @value.
145 // Returns TRUE if successful, otherwise sets an error.
146 static gboolean read_uint32(GBytes* buffer,
147 size_t* offset,
148 uint32_t* value,
149 GError** error) {
150 if (!check_size(buffer, *offset, sizeof(uint32_t), error)) {
151 return FALSE;
152 }
153
154 *value = reinterpret_cast<const uint32_t*>(get_data(buffer, offset))[0];
155 *offset += sizeof(uint32_t);
156 return TRUE;
157 }
158
159 // Reads a #FL_VALUE_TYPE_INT stored as a signed 32 bit integer from @buffer.
160 // Returns a new #FlValue of type #FL_VALUE_TYPE_INT if successful or %NULL on
161 // error.
162 static FlValue* read_int32_value(GBytes* buffer,
163 size_t* offset,
164 GError** error) {
165 if (!check_size(buffer, *offset, sizeof(int32_t), error)) {
166 return nullptr;
167 }
168
169 FlValue* value = fl_value_new_int(
170 reinterpret_cast<const int32_t*>(get_data(buffer, offset))[0]);
171 *offset += sizeof(int32_t);
172 return value;
173 }
174
175 // Reads a #FL_VALUE_TYPE_INT stored as a signed 64 bit integer from @buffer.
176 // Returns a new #FlValue of type #FL_VALUE_TYPE_INT if successful or %NULL on
177 // error.
178 static FlValue* read_int64_value(GBytes* buffer,
179 size_t* offset,
180 GError** error) {
181 if (!check_size(buffer, *offset, sizeof(int64_t), error)) {
182 return nullptr;
183 }
184
185 FlValue* value = fl_value_new_int(
186 reinterpret_cast<const int64_t*>(get_data(buffer, offset))[0]);
187 *offset += sizeof(int64_t);
188 return value;
189 }
190
191 // Reads a 64 bit floating point number from @buffer and writes it to @value.
192 // Returns a new #FlValue of type #FL_VALUE_TYPE_FLOAT if successful or %NULL on
193 // error.
194 static FlValue* read_float64_value(GBytes* buffer,
195 size_t* offset,
196 GError** error) {
197 if (!read_align(buffer, offset, 8, error)) {
198 return nullptr;
199 }
200 if (!check_size(buffer, *offset, sizeof(double), error)) {
201 return nullptr;
202 }
203
204 FlValue* value = fl_value_new_float(
205 reinterpret_cast<const double*>(get_data(buffer, offset))[0]);
206 *offset += sizeof(double);
207 return value;
208 }
209
210 // Reads an UTF-8 text string from @buffer in standard codec format.
211 // Returns a new #FlValue of type #FL_VALUE_TYPE_STRING if successful or %NULL
212 // on error.
213 static FlValue* read_string_value(FlStandardMessageCodec* self,
214 GBytes* buffer,
215 size_t* offset,
216 GError** error) {
217 uint32_t length;
218 if (!fl_standard_message_codec_read_size(self, buffer, offset, &length,
219 error)) {
220 return nullptr;
221 }
222 if (!check_size(buffer, *offset, length, error)) {
223 return nullptr;
224 }
225 FlValue* value = fl_value_new_string_sized(
226 reinterpret_cast<const gchar*>(get_data(buffer, offset)), length);
227 *offset += length;
228 return value;
229 }
230
231 // Reads an unsigned 8 bit list from @buffer in standard codec format.
232 // Returns a new #FlValue of type #FL_VALUE_TYPE_UINT8_LIST if successful or
233 // %NULL on error.
234 static FlValue* read_uint8_list_value(FlStandardMessageCodec* self,
235 GBytes* buffer,
236 size_t* offset,
237 GError** error) {
238 uint32_t length;
239 if (!fl_standard_message_codec_read_size(self, buffer, offset, &length,
240 error)) {
241 return nullptr;
242 }
243 if (!check_size(buffer, *offset, sizeof(uint8_t) * length, error)) {
244 return nullptr;
245 }
246 FlValue* value = fl_value_new_uint8_list(get_data(buffer, offset), length);
247 *offset += length;
248 return value;
249 }
250
251 // Reads a signed 32 bit list from @buffer in standard codec format.
252 // Returns a new #FlValue of type #FL_VALUE_TYPE_INT32_LIST if successful or
253 // %NULL on error.
254 static FlValue* read_int32_list_value(FlStandardMessageCodec* self,
255 GBytes* buffer,
256 size_t* offset,
257 GError** error) {
258 uint32_t length;
259 if (!fl_standard_message_codec_read_size(self, buffer, offset, &length,
260 error)) {
261 return nullptr;
262 }
263 if (!read_align(buffer, offset, 4, error)) {
264 return nullptr;
265 }
266 if (!check_size(buffer, *offset, sizeof(int32_t) * length, error)) {
267 return nullptr;
268 }
269 FlValue* value = fl_value_new_int32_list(
270 reinterpret_cast<const int32_t*>(get_data(buffer, offset)), length);
271 *offset += sizeof(int32_t) * length;
272 return value;
273 }
274
275 // Reads a signed 64 bit list from @buffer in standard codec format.
276 // Returns a new #FlValue of type #FL_VALUE_TYPE_INT64_LIST if successful or
277 // %NULL on error.
278 static FlValue* read_int64_list_value(FlStandardMessageCodec* self,
279 GBytes* buffer,
280 size_t* offset,
281 GError** error) {
282 uint32_t length;
283 if (!fl_standard_message_codec_read_size(self, buffer, offset, &length,
284 error)) {
285 return nullptr;
286 }
287 if (!read_align(buffer, offset, 8, error)) {
288 return nullptr;
289 }
290 if (!check_size(buffer, *offset, sizeof(int64_t) * length, error)) {
291 return nullptr;
292 }
293 FlValue* value = fl_value_new_int64_list(
294 reinterpret_cast<const int64_t*>(get_data(buffer, offset)), length);
295 *offset += sizeof(int64_t) * length;
296 return value;
297 }
298
299 // Reads a 32 bit floating point number list from @buffer in standard codec
300 // format. Returns a new #FlValue of type #FL_VALUE_TYPE_FLOAT32_LIST if
301 // successful or %NULL on error.
302 static FlValue* read_float32_list_value(FlStandardMessageCodec* self,
303 GBytes* buffer,
304 size_t* offset,
305 GError** error) {
306 uint32_t length;
307 if (!fl_standard_message_codec_read_size(self, buffer, offset, &length,
308 error)) {
309 return nullptr;
310 }
311 if (!read_align(buffer, offset, 4, error)) {
312 return nullptr;
313 }
314 if (!check_size(buffer, *offset, sizeof(float) * length, error)) {
315 return nullptr;
316 }
317 FlValue* value = fl_value_new_float32_list(
318 reinterpret_cast<const float*>(get_data(buffer, offset)), length);
319 *offset += sizeof(float) * length;
320 return value;
321 }
322
323 // Reads a floating point number list from @buffer in standard codec format.
324 // Returns a new #FlValue of type #FL_VALUE_TYPE_FLOAT_LIST if successful or
325 // %NULL on error.
326 static FlValue* read_float64_list_value(FlStandardMessageCodec* self,
327 GBytes* buffer,
328 size_t* offset,
329 GError** error) {
330 uint32_t length;
331 if (!fl_standard_message_codec_read_size(self, buffer, offset, &length,
332 error)) {
333 return nullptr;
334 }
335 if (!read_align(buffer, offset, 8, error)) {
336 return nullptr;
337 }
338 if (!check_size(buffer, *offset, sizeof(double) * length, error)) {
339 return nullptr;
340 }
341 FlValue* value = fl_value_new_float_list(
342 reinterpret_cast<const double*>(get_data(buffer, offset)), length);
343 *offset += sizeof(double) * length;
344 return value;
345 }
346
347 // Reads a list from @buffer in standard codec format.
348 // Returns a new #FlValue of type #FL_VALUE_TYPE_LIST if successful or %NULL on
349 // error.
350 static FlValue* read_list_value(FlStandardMessageCodec* self,
351 GBytes* buffer,
352 size_t* offset,
353 GError** error) {
354 uint32_t length;
355 if (!fl_standard_message_codec_read_size(self, buffer, offset, &length,
356 error)) {
357 return nullptr;
358 }
359
360 g_autoptr(FlValue) list = fl_value_new_list();
361 for (size_t i = 0; i < length; i++) {
362 g_autoptr(FlValue) child =
363 fl_standard_message_codec_read_value(self, buffer, offset, error);
364 if (child == nullptr) {
365 return nullptr;
366 }
367 fl_value_append(list, child);
368 }
369
370 return fl_value_ref(list);
371 }
372
373 // Reads a map from @buffer in standard codec format.
374 // Returns a new #FlValue of type #FL_VALUE_TYPE_MAP if successful or %NULL on
375 // error.
376 static FlValue* read_map_value(FlStandardMessageCodec* self,
377 GBytes* buffer,
378 size_t* offset,
379 GError** error) {
380 uint32_t length;
381 if (!fl_standard_message_codec_read_size(self, buffer, offset, &length,
382 error)) {
383 return nullptr;
384 }
385
386 g_autoptr(FlValue) map = fl_value_new_map();
387 for (size_t i = 0; i < length; i++) {
388 g_autoptr(FlValue) key =
389 fl_standard_message_codec_read_value(self, buffer, offset, error);
390 if (key == nullptr) {
391 return nullptr;
392 }
393 g_autoptr(FlValue) value =
394 fl_standard_message_codec_read_value(self, buffer, offset, error);
395 if (value == nullptr) {
396 return nullptr;
397 }
398 fl_value_set(map, key, value);
399 }
400
401 return fl_value_ref(map);
402 }
403
404 // Implements FlMessageCodec::encode_message.
405 static GBytes* fl_standard_message_codec_encode_message(FlMessageCodec* codec,
406 FlValue* message,
407 GError** error) {
408 FlStandardMessageCodec* self =
409 reinterpret_cast<FlStandardMessageCodec*>(codec);
410
411 g_autoptr(GByteArray) buffer = g_byte_array_new();
412 if (!fl_standard_message_codec_write_value(self, buffer, message, error)) {
413 return nullptr;
414 }
415 return g_byte_array_free_to_bytes(
416 static_cast<GByteArray*>(g_steal_pointer(&buffer)));
417 }
418
419 // Implements FlMessageCodec::decode_message.
420 static FlValue* fl_standard_message_codec_decode_message(FlMessageCodec* codec,
421 GBytes* message,
422 GError** error) {
423 if (g_bytes_get_size(message) == 0) {
424 return fl_value_new_null();
425 }
426
427 FlStandardMessageCodec* self =
428 reinterpret_cast<FlStandardMessageCodec*>(codec);
429
430 size_t offset = 0;
431 g_autoptr(FlValue) value =
432 fl_standard_message_codec_read_value(self, message, &offset, error);
433 if (value == nullptr) {
434 return nullptr;
435 }
436
437 if (offset != g_bytes_get_size(message)) {
438 g_set_error(error, FL_MESSAGE_CODEC_ERROR,
439 FL_MESSAGE_CODEC_ERROR_ADDITIONAL_DATA,
440 "Unused %zi bytes after standard message",
441 g_bytes_get_size(message) - offset);
442 return nullptr;
443 }
444
445 return fl_value_ref(value);
446 }
447
448 static void fl_standard_message_codec_class_init(
449 FlStandardMessageCodecClass* klass) {
450 FL_MESSAGE_CODEC_CLASS(klass)->encode_message =
451 fl_standard_message_codec_encode_message;
452 FL_MESSAGE_CODEC_CLASS(klass)->decode_message =
453 fl_standard_message_codec_decode_message;
454 }
455
456 static void fl_standard_message_codec_init(FlStandardMessageCodec* self) {}
457
458 G_MODULE_EXPORT FlStandardMessageCodec* fl_standard_message_codec_new() {
459 return static_cast<FlStandardMessageCodec*>(
460 g_object_new(fl_standard_message_codec_get_type(), nullptr));
461 }
462
463 void fl_standard_message_codec_write_size(FlStandardMessageCodec* codec,
464 GByteArray* buffer,
465 uint32_t size) {
466 if (size < 254) {
467 write_uint8(buffer, size);
468 } else if (size <= 0xffff) {
469 write_uint8(buffer, 254);
470 write_uint16(buffer, size);
471 } else {
472 write_uint8(buffer, 255);
473 write_uint32(buffer, size);
474 }
475 }
476
477 gboolean fl_standard_message_codec_read_size(FlStandardMessageCodec* codec,
478 GBytes* buffer,
479 size_t* offset,
480 uint32_t* value,
481 GError** error) {
482 uint8_t value8;
483 if (!read_uint8(buffer, offset, &value8, error)) {
484 return FALSE;
485 }
486
487 if (value8 == 255) {
488 if (!read_uint32(buffer, offset, value, error)) {
489 return FALSE;
490 }
491 } else if (value8 == 254) {
492 uint16_t value16;
493 if (!read_uint16(buffer, offset, &value16, error)) {
494 return FALSE;
495 }
496 *value = value16;
497 } else {
498 *value = value8;
499 }
500
501 return TRUE;
502 }
503
504 gboolean fl_standard_message_codec_write_value(FlStandardMessageCodec* self,
505 GByteArray* buffer,
506 FlValue* value,
507 GError** error) {
508 if (value == nullptr) {
509 write_uint8(buffer, kValueNull);
510 return TRUE;
511 }
512
513 switch (fl_value_get_type(value)) {
514 case FL_VALUE_TYPE_NULL:
515 write_uint8(buffer, kValueNull);
516 return TRUE;
517 case FL_VALUE_TYPE_BOOL:
518 if (fl_value_get_bool(value)) {
519 write_uint8(buffer, kValueTrue);
520 } else {
521 write_uint8(buffer, kValueFalse);
522 }
523 return TRUE;
524 case FL_VALUE_TYPE_INT: {
525 int64_t v = fl_value_get_int(value);
526 if (v >= INT32_MIN && v <= INT32_MAX) {
527 write_uint8(buffer, kValueInt32);
528 write_int32(buffer, v);
529 } else {
530 write_uint8(buffer, kValueInt64);
531 write_int64(buffer, v);
532 }
533 return TRUE;
534 }
535 case FL_VALUE_TYPE_FLOAT:
536 write_uint8(buffer, kValueFloat64);
537 write_align(buffer, 8);
538 write_float64(buffer, fl_value_get_float(value));
539 return TRUE;
540 case FL_VALUE_TYPE_STRING: {
541 write_uint8(buffer, kValueString);
542 const char* text = fl_value_get_string(value);
543 size_t length = strlen(text);
544 fl_standard_message_codec_write_size(self, buffer, length);
545 g_byte_array_append(buffer, reinterpret_cast<const uint8_t*>(text),
546 length);
547 return TRUE;
548 }
549 case FL_VALUE_TYPE_UINT8_LIST: {
550 write_uint8(buffer, kValueUint8List);
551 size_t length = fl_value_get_length(value);
552 fl_standard_message_codec_write_size(self, buffer, length);
553 g_byte_array_append(buffer, fl_value_get_uint8_list(value),
554 sizeof(uint8_t) * length);
555 return TRUE;
556 }
557 case FL_VALUE_TYPE_INT32_LIST: {
558 write_uint8(buffer, kValueInt32List);
559 size_t length = fl_value_get_length(value);
560 fl_standard_message_codec_write_size(self, buffer, length);
561 write_align(buffer, 4);
562 g_byte_array_append(
563 buffer,
564 reinterpret_cast<const uint8_t*>(fl_value_get_int32_list(value)),
565 sizeof(int32_t) * length);
566 return TRUE;
567 }
568 case FL_VALUE_TYPE_INT64_LIST: {
569 write_uint8(buffer, kValueInt64List);
570 size_t length = fl_value_get_length(value);
571 fl_standard_message_codec_write_size(self, buffer, length);
572 write_align(buffer, 8);
573 g_byte_array_append(
574 buffer,
575 reinterpret_cast<const uint8_t*>(fl_value_get_int64_list(value)),
576 sizeof(int64_t) * length);
577 return TRUE;
578 }
579 case FL_VALUE_TYPE_FLOAT32_LIST: {
580 write_uint8(buffer, kValueFloat32List);
581 size_t length = fl_value_get_length(value);
582 fl_standard_message_codec_write_size(self, buffer, length);
583 write_align(buffer, 4);
584 g_byte_array_append(
585 buffer,
586 reinterpret_cast<const uint8_t*>(fl_value_get_float32_list(value)),
587 sizeof(float) * length);
588 return TRUE;
589 }
590 case FL_VALUE_TYPE_FLOAT_LIST: {
591 write_uint8(buffer, kValueFloat64List);
592 size_t length = fl_value_get_length(value);
593 fl_standard_message_codec_write_size(self, buffer, length);
594 write_align(buffer, 8);
595 g_byte_array_append(
596 buffer,
597 reinterpret_cast<const uint8_t*>(fl_value_get_float_list(value)),
598 sizeof(double) * length);
599 return TRUE;
600 }
601 case FL_VALUE_TYPE_LIST:
602 write_uint8(buffer, kValueList);
603 fl_standard_message_codec_write_size(self, buffer,
604 fl_value_get_length(value));
605 for (size_t i = 0; i < fl_value_get_length(value); i++) {
606 if (!fl_standard_message_codec_write_value(
607 self, buffer, fl_value_get_list_value(value, i), error)) {
608 return FALSE;
609 }
610 }
611 return TRUE;
612 case FL_VALUE_TYPE_MAP:
613 write_uint8(buffer, kValueMap);
614 fl_standard_message_codec_write_size(self, buffer,
615 fl_value_get_length(value));
616 for (size_t i = 0; i < fl_value_get_length(value); i++) {
617 if (!fl_standard_message_codec_write_value(
618 self, buffer, fl_value_get_map_key(value, i), error) ||
619 !fl_standard_message_codec_write_value(
620 self, buffer, fl_value_get_map_value(value, i), error)) {
621 return FALSE;
622 }
623 }
624 return TRUE;
625 }
626
627 g_set_error(error, FL_MESSAGE_CODEC_ERROR,
628 FL_MESSAGE_CODEC_ERROR_UNSUPPORTED_TYPE,
629 "Unexpected FlValue type %d", fl_value_get_type(value));
630 return FALSE;
631 }
632
633 FlValue* fl_standard_message_codec_read_value(FlStandardMessageCodec* self,
634 GBytes* buffer,
635 size_t* offset,
636 GError** error) {
637 uint8_t type;
638 if (!read_uint8(buffer, offset, &type, error)) {
639 return nullptr;
640 }
641
642 g_autoptr(FlValue) value = nullptr;
643 if (type == kValueNull) {
644 return fl_value_new_null();
645 } else if (type == kValueTrue) {
646 return fl_value_new_bool(TRUE);
647 } else if (type == kValueFalse) {
648 return fl_value_new_bool(FALSE);
649 } else if (type == kValueInt32) {
650 value = read_int32_value(buffer, offset, error);
651 } else if (type == kValueInt64) {
652 value = read_int64_value(buffer, offset, error);
653 } else if (type == kValueFloat64) {
654 value = read_float64_value(buffer, offset, error);
655 } else if (type == kValueString) {
656 value = read_string_value(self, buffer, offset, error);
657 } else if (type == kValueUint8List) {
658 value = read_uint8_list_value(self, buffer, offset, error);
659 } else if (type == kValueInt32List) {
660 value = read_int32_list_value(self, buffer, offset, error);
661 } else if (type == kValueInt64List) {
662 value = read_int64_list_value(self, buffer, offset, error);
663 } else if (type == kValueFloat32List) {
664 value = read_float32_list_value(self, buffer, offset, error);
665 } else if (type == kValueFloat64List) {
666 value = read_float64_list_value(self, buffer, offset, error);
667 } else if (type == kValueList) {
668 value = read_list_value(self, buffer, offset, error);
669 } else if (type == kValueMap) {
670 value = read_map_value(self, buffer, offset, error);
671 } else {
672 g_set_error(error, FL_MESSAGE_CODEC_ERROR,
673 FL_MESSAGE_CODEC_ERROR_UNSUPPORTED_TYPE,
674 "Unexpected standard codec type %02x", type);
675 return nullptr;
676 }
677
678 return value == nullptr ? nullptr : fl_value_ref(value);
679 }
G_DEFINE_TYPE
G_DEFINE_TYPE(FlStandardMessageCodec, fl_standard_message_codec, fl_message_codec_get_type()) static void write_uint8(GByteArray *buffer
read_list_value
static FlValue * read_list_value(FlStandardMessageCodec *self, GBytes *buffer, size_t *offset, GError **error)
Definition: fl_standard_message_codec.cc:350
read_uint16
static gboolean read_uint16(GBytes *buffer, size_t *offset, uint16_t *value, GError **error)
Definition: fl_standard_message_codec.cc:131
kValueList
static constexpr int kValueList
Definition: fl_standard_message_codec.cc:27
fl_value_get_int32_list
const G_MODULE_EXPORT int32_t * fl_value_get_int32_list(FlValue *self)
Definition: fl_value.cc:656
FL_VALUE_TYPE_UINT8_LIST
@ FL_VALUE_TYPE_UINT8_LIST
Definition: fl_value.h:65
fl_value_new_string_sized
G_MODULE_EXPORT FlValue * fl_value_new_string_sized(const gchar *value, size_t value_length)
Definition: fl_value.cc:272
FL_VALUE_TYPE_MAP
@ FL_VALUE_TYPE_MAP
Definition: fl_value.h:70
fl_standard_message_codec_read_value
FlValue * fl_standard_message_codec_read_value(FlStandardMessageCodec *self, GBytes *buffer, size_t *offset, GError **error)
Definition: fl_standard_message_codec.cc:633
fl_standard_message_codec_new
G_MODULE_EXPORT FlStandardMessageCodec * fl_standard_message_codec_new()
Definition: fl_standard_message_codec.cc:458
fl_standard_message_codec_private.h
kValueUint8List
static constexpr int kValueUint8List
Definition: fl_standard_message_codec.cc:23
fl_standard_message_codec_encode_message
static GBytes * fl_standard_message_codec_encode_message(FlMessageCodec *codec, FlValue *message, GError **error)
Definition: fl_standard_message_codec.cc:405
read_int32_value
static FlValue * read_int32_value(GBytes *buffer, size_t *offset, GError **error)
Definition: fl_standard_message_codec.cc:162
kValueNull
static constexpr int kValueNull
Definition: fl_standard_message_codec.cc:16
kValueInt64List
static constexpr int kValueInt64List
Definition: fl_standard_message_codec.cc:25
fl_value_new_list
G_MODULE_EXPORT FlValue * fl_value_new_list()
Definition: fl_value.cc:338
fl_value_new_float32_list
G_MODULE_EXPORT FlValue * fl_value_new_float32_list(const float *data, size_t data_length)
Definition: fl_value.cc:318
fl_value_get_float_list
const G_MODULE_EXPORT double * fl_value_get_float_list(FlValue *self)
Definition: fl_value.cc:677
kValueInt32List
static constexpr int kValueInt32List
Definition: fl_standard_message_codec.cc:24
kValueInt64
static constexpr int kValueInt64
Definition: fl_standard_message_codec.cc:20
fl_value_new_bool
G_MODULE_EXPORT FlValue * fl_value_new_bool(bool value)
Definition: fl_value.cc:244
FL_MESSAGE_CODEC_ERROR_ADDITIONAL_DATA
@ FL_MESSAGE_CODEC_ERROR_ADDITIONAL_DATA
Definition: fl_message_codec.h:35
FlValue
typedefG_BEGIN_DECLS struct _FlValue FlValue
Definition: fl_value.h:40
kValueInt32
static constexpr int kValueInt32
Definition: fl_standard_message_codec.cc:19
kValueFloat64List
static constexpr int kValueFloat64List
Definition: fl_standard_message_codec.cc:26
write_float64
static void write_float64(GByteArray *buffer, double value)
Definition: fl_standard_message_codec.cc:65
kValueTrue
static constexpr int kValueTrue
Definition: fl_standard_message_codec.cc:17
fl_value_new_null
G_MODULE_EXPORT FlValue * fl_value_new_null()
Definition: fl_value.cc:240
FL_VALUE_TYPE_LIST
@ FL_VALUE_TYPE_LIST
Definition: fl_value.h:69
read_string_value
static FlValue * read_string_value(FlStandardMessageCodec *self, GBytes *buffer, size_t *offset, GError **error)
Definition: fl_standard_message_codec.cc:213
fl_value_get_bool
G_MODULE_EXPORT bool fl_value_get_bool(FlValue *self)
Definition: fl_value.cc:621
fl_value_get_uint8_list
const G_MODULE_EXPORT uint8_t * fl_value_get_uint8_list(FlValue *self)
Definition: fl_value.cc:649
fl_value_set
G_MODULE_EXPORT void fl_value_set(FlValue *self, FlValue *key, FlValue *value)
Definition: fl_value.cc:569
write_int64
static void write_int64(GByteArray *buffer, int64_t value)
Definition: fl_standard_message_codec.cc:60
fl_value_new_int
G_MODULE_EXPORT FlValue * fl_value_new_int(int64_t value)
Definition: fl_value.cc:251
fl_value_get_string
const G_MODULE_EXPORT gchar * fl_value_get_string(FlValue *self)
Definition: fl_value.cc:642
read_float64_value
static FlValue * read_float64_value(GBytes *buffer, size_t *offset, GError **error)
Definition: fl_standard_message_codec.cc:194
fl_value_get_float32_list
const G_MODULE_EXPORT float * fl_value_get_float32_list(FlValue *self)
Definition: fl_value.cc:670
read_map_value
static FlValue * read_map_value(FlStandardMessageCodec *self, GBytes *buffer, size_t *offset, GError **error)
Definition: fl_standard_message_codec.cc:376
FL_VALUE_TYPE_NULL
@ FL_VALUE_TYPE_NULL
Definition: fl_value.h:60
read_align
static gboolean read_align(GBytes *buffer, size_t *offset, size_t align, GError **error)
Definition: fl_standard_message_codec.cc:91
read_int32_list_value
static FlValue * read_int32_list_value(FlStandardMessageCodec *self, GBytes *buffer, size_t *offset, GError **error)
Definition: fl_standard_message_codec.cc:254
fl_value_get_int
G_MODULE_EXPORT int64_t fl_value_get_int(FlValue *self)
Definition: fl_value.cc:628
write_int32
static void write_int32(GByteArray *buffer, int32_t value)
Definition: fl_standard_message_codec.cc:55
read_uint8_list_value
static FlValue * read_uint8_list_value(FlStandardMessageCodec *self, GBytes *buffer, size_t *offset, GError **error)
Definition: fl_standard_message_codec.cc:234
fl_standard_message_codec_write_size
void fl_standard_message_codec_write_size(FlStandardMessageCodec *codec, GByteArray *buffer, uint32_t size)
Definition: fl_standard_message_codec.cc:463
fl_value_ref
G_MODULE_EXPORT FlValue * fl_value_ref(FlValue *self)
Definition: fl_value.cc:363
fl_value_new_map
G_MODULE_EXPORT FlValue * fl_value_new_map()
Definition: fl_value.cc:355
fl_value_get_type
G_MODULE_EXPORT FlValueType fl_value_get_type(FlValue *self)
Definition: fl_value.cc:428
write_uint16
static void write_uint16(GByteArray *buffer, uint16_t value)
Definition: fl_standard_message_codec.cc:45
fl_value_get_list_value
G_MODULE_EXPORT FlValue * fl_value_get_list_value(FlValue *self, size_t index)
Definition: fl_value.cc:735
read_int64_value
static FlValue * read_int64_value(GBytes *buffer, size_t *offset, GError **error)
Definition: fl_standard_message_codec.cc:178
FL_VALUE_TYPE_FLOAT32_LIST
@ FL_VALUE_TYPE_FLOAT32_LIST
Definition: fl_value.h:71
FL_VALUE_TYPE_STRING
@ FL_VALUE_TYPE_STRING
Definition: fl_value.h:64
fl_standard_message_codec_read_size
gboolean fl_standard_message_codec_read_size(FlStandardMessageCodec *codec, GBytes *buffer, size_t *offset, uint32_t *value, GError **error)
Definition: fl_standard_message_codec.cc:477
read_float32_list_value
static FlValue * read_float32_list_value(FlStandardMessageCodec *self, GBytes *buffer, size_t *offset, GError **error)
Definition: fl_standard_message_codec.cc:302
fl_value_new_float_list
G_MODULE_EXPORT FlValue * fl_value_new_float_list(const double *data, size_t data_length)
Definition: fl_value.cc:328
kValueFalse
static constexpr int kValueFalse
Definition: fl_standard_message_codec.cc:18
fl_standard_message_codec_decode_message
static FlValue * fl_standard_message_codec_decode_message(FlMessageCodec *codec, GBytes *message, GError **error)
Definition: fl_standard_message_codec.cc:420
TRUE
return TRUE
Definition: fl_pixel_buffer_texture_test.cc:53
check_size
static gboolean check_size(GBytes *buffer, size_t offset, size_t required, GError **error)
Definition: fl_standard_message_codec.cc:78
fl_value_new_int32_list
G_MODULE_EXPORT FlValue * fl_value_new_int32_list(const int32_t *data, size_t data_length)
Definition: fl_value.cc:298
fl_value_get_float
G_MODULE_EXPORT double fl_value_get_float(FlValue *self)
Definition: fl_value.cc:635
fl_value_get_length
G_MODULE_EXPORT size_t fl_value_get_length(FlValue *self)
Definition: fl_value.cc:684
FL_VALUE_TYPE_INT64_LIST
@ FL_VALUE_TYPE_INT64_LIST
Definition: fl_value.h:67
kValueFloat64
static constexpr int kValueFloat64
Definition: fl_standard_message_codec.cc:21
FL_VALUE_TYPE_INT
@ FL_VALUE_TYPE_INT
Definition: fl_value.h:62
fl_value_new_int64_list
G_MODULE_EXPORT FlValue * fl_value_new_int64_list(const int64_t *data, size_t data_length)
Definition: fl_value.cc:308
get_data
static const uint8_t * get_data(GBytes *buffer, size_t *offset)
Definition: fl_standard_message_codec.cc:109
fl_standard_message_codec_class_init
static void fl_standard_message_codec_class_init(FlStandardMessageCodecClass *klass)
Definition: fl_standard_message_codec.cc:448
FL_MESSAGE_CODEC_ERROR_OUT_OF_DATA
@ FL_MESSAGE_CODEC_ERROR_OUT_OF_DATA
Definition: fl_message_codec.h:34
error
const uint8_t uint32_t uint32_t GError ** error
Definition: fl_pixel_buffer_texture_test.cc:40
kValueMap
static constexpr int kValueMap
Definition: fl_standard_message_codec.cc:28
FL_VALUE_TYPE_FLOAT_LIST
@ FL_VALUE_TYPE_FLOAT_LIST
Definition: fl_value.h:68
fl_standard_message_codec_init
static void fl_standard_message_codec_init(FlStandardMessageCodec *self)
Definition: fl_standard_message_codec.cc:456
read_uint32
static gboolean read_uint32(GBytes *buffer, size_t *offset, uint32_t *value, GError **error)
Definition: fl_standard_message_codec.cc:146
fl_value_new_uint8_list
G_MODULE_EXPORT FlValue * fl_value_new_uint8_list(const uint8_t *data, size_t data_length)
Definition: fl_value.cc:281
fl_value_append
G_MODULE_EXPORT void fl_value_append(FlValue *self, FlValue *value)
Definition: fl_value.cc:552
buffer
static const uint8_t buffer[]
Definition: fl_pixel_buffer_texture_test.cc:44
kValueFloat32List
static constexpr int kValueFloat32List
Definition: fl_standard_message_codec.cc:29
FL_VALUE_TYPE_FLOAT
@ FL_VALUE_TYPE_FLOAT
Definition: fl_value.h:63
kValueString
static constexpr int kValueString
Definition: fl_standard_message_codec.cc:22
FL_VALUE_TYPE_INT32_LIST
@ FL_VALUE_TYPE_INT32_LIST
Definition: fl_value.h:66
write_align
static void write_align(GByteArray *buffer, guint align)
Definition: fl_standard_message_codec.cc:71
FL_MESSAGE_CODEC_ERROR_UNSUPPORTED_TYPE
@ FL_MESSAGE_CODEC_ERROR_UNSUPPORTED_TYPE
Definition: fl_message_codec.h:36
fl_value_new_float
G_MODULE_EXPORT FlValue * fl_value_new_float(double value)
Definition: fl_value.cc:258
_FlStandardMessageCodec
Definition: fl_standard_message_codec.cc:31
read_float64_list_value
static FlValue * read_float64_list_value(FlStandardMessageCodec *self, GBytes *buffer, size_t *offset, GError **error)
Definition: fl_standard_message_codec.cc:326
fl_standard_message_codec.h
fl_value_get_map_key
G_MODULE_EXPORT FlValue * fl_value_get_map_key(FlValue *self, size_t index)
Definition: fl_value.cc:743
read_uint8
static gboolean read_uint8(GBytes *buffer, size_t *offset, uint8_t *value, GError **error)
Definition: fl_standard_message_codec.cc:116
write_uint32
static void write_uint32(GByteArray *buffer, uint32_t value)
Definition: fl_standard_message_codec.cc:50
fl_value_get_int64_list
const G_MODULE_EXPORT int64_t * fl_value_get_int64_list(FlValue *self)
Definition: fl_value.cc:663
FL_VALUE_TYPE_BOOL
@ FL_VALUE_TYPE_BOOL
Definition: fl_value.h:61
value
uint8_t value
Definition: fl_standard_message_codec.cc:41
fl_standard_message_codec_write_value
gboolean fl_standard_message_codec_write_value(FlStandardMessageCodec *self, GByteArray *buffer, FlValue *value, GError **error)
Definition: fl_standard_message_codec.cc:504
fl_value_get_map_value
G_MODULE_EXPORT FlValue * fl_value_get_map_value(FlValue *self, size_t index)
Definition: fl_value.cc:751
read_int64_list_value
static FlValue * read_int64_list_value(FlStandardMessageCodec *self, GBytes *buffer, size_t *offset, GError **error)
Definition: fl_standard_message_codec.cc:278
_FlStandardMessageCodec::parent_instance
FlMessageCodec parent_instance
Definition: fl_standard_message_codec.cc:32
FL_MESSAGE_CODEC_ERROR
#define FL_MESSAGE_CODEC_ERROR
Definition: fl_message_codec.h:30