aurora
/
flutter_zxing
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
Browse Source

allow to set code format for reader

pull/3/head
Khoren Markosyan 3 years ago
parent
b597e3709d
commit
8425459c6a
9 changed files with 85 additions and 42 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Unified View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 10
      example/pubspec.lock
  2. 2
      example/pubspec.yaml
  3. 30
      ios/Classes/src/native_zxing.cpp
  4. 10
      ios/Classes/src/native_zxing.h
  5. 13
      lib/flutter_zxing.dart
  6. 30
      lib/generated_bindings.dart
  7. 25
      lib/isolate_utils.dart
  8. 5
      lib/zxing_reader_widget.dart
  9. 2
      pubspec.yaml

10
example/pubspec.lock
Unescape View File

@ -7,7 +7,7 @@ packages:
name: archive name: archive
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "3.2.2" version: "3.3.0"
async: async:
dependency: transitive dependency: transitive
description: description:
@ -28,7 +28,7 @@ packages:
name: camera name: camera
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "0.9.4+16" version: "0.9.4+19"
camera_platform_interface: camera_platform_interface:
dependency: transitive dependency: transitive
description: description:
@ -302,7 +302,7 @@ packages:
name: share_plus name: share_plus
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "4.0.1" version: "4.0.3"
share_plus_linux: share_plus_linux:
dependency: transitive dependency: transitive
description: description:
@ -323,7 +323,7 @@ packages:
name: share_plus_platform_interface name: share_plus_platform_interface
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "3.0.0" version: "3.0.2"
share_plus_web: share_plus_web:
dependency: transitive dependency: transitive
description: description:
@ -468,7 +468,7 @@ packages:
name: win32 name: win32
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "2.4.2" version: "2.5.1"
xdg_directories: xdg_directories:
dependency: transitive dependency: transitive
description: description:

2
example/pubspec.yaml
Unescape View File

@ -13,7 +13,7 @@ dependencies:
flutter_zxing: flutter_zxing:
path: ../ path: ../
path_provider: ^2.0.9 path_provider: ^2.0.9
share_plus: ^4.0.1 share_plus: ^4.0.3
dev_dependencies: dev_dependencies:
flutter_lints: ^1.0.0 flutter_lints: ^1.0.0

30
ios/Classes/src/native_zxing.cpp
Unescape View File

@ -16,7 +16,7 @@ extern "C"
} }
FUNCTION_ATTRIBUTE FUNCTION_ATTRIBUTE
struct CodeResult zxingRead(char *bytes, int width, int height, int cropSize) struct CodeResult zxingRead(char *bytes, int format, int width, int height, int cropWidth, int cropHeight, int logEnabled)
{ {
long long start = get_now(); long long start = get_now();
@ -24,11 +24,12 @@ extern "C"
uint8_t *data = new uint8_t[length]; uint8_t *data = new uint8_t[length];
memcpy(data, bytes, length); memcpy(data, bytes, length);
BarcodeFormats formats = BarcodeFormat::Any; BarcodeFormats formats = BarcodeFormat(format); // BarcodeFormat::Any;
DecodeHints hints = DecodeHints().setTryHarder(false).setTryRotate(true).setFormats(formats); DecodeHints hints = DecodeHints().setTryHarder(false).setTryRotate(true).setFormats(formats);
ImageView image{data, width, height, ImageFormat::Lum}; ImageView image{data, width, height, ImageFormat::Lum};
if (cropSize > 0 && cropSize < width && cropSize < height) { if (cropWidth > 0 && cropHeight > 0 && cropWidth < width && cropHeight < height)
image = image.cropped(width / 2 - cropSize / 2, height / 2 - cropSize / 2, cropSize, cropSize); {
image = image.cropped(width / 2 - cropWidth / 2, height / 2 - cropHeight / 2, cropWidth, cropHeight);
} }
Result result = ReadBarcode(image, hints); Result result = ReadBarcode(image, hints);
@ -43,16 +44,19 @@ extern "C"
} }
int evalInMillis = static_cast<int>(get_now() - start); int evalInMillis = static_cast<int>(get_now() - start);
platform_log("Read done in %dms\n", evalInMillis); if (logEnabled)
{
platform_log("zxingRead: %d ms", evalInMillis);
}
return code; return code;
} }
FUNCTION_ATTRIBUTE FUNCTION_ATTRIBUTE
struct EncodeResult zxingEncode(char *contents, int width, int height, int format, int margin, int eccLevel) struct EncodeResult zxingEncode(char *contents, int width, int height, int format, int margin, int eccLevel, int logEnabled)
{ {
long long start = get_now(); long long start = get_now();
struct EncodeResult result = { nullptr, 0, false, nullptr }; struct EncodeResult result = {nullptr, 0, false, nullptr};
try try
{ {
auto writer = MultiFormatWriter(BarcodeFormat(format)).setMargin(margin).setEccLevel(eccLevel); auto writer = MultiFormatWriter(BarcodeFormat(format)).setMargin(margin).setEccLevel(eccLevel);
@ -63,13 +67,19 @@ extern "C"
} }
catch (const std::exception &e) catch (const std::exception &e)
{ {
platform_log("Can't encode text: %s\nError: %s\n", contents, e.what()); if (logEnabled)
{
platform_log("Can't encode text: %s\nError: %s\n", contents, e.what());
}
result.error = new char[strlen(e.what()) + 1]; result.error = new char[strlen(e.what()) + 1];
strcpy(result.error, e.what()); strcpy(result.error, e.what());
} }
int evalInMillis = static_cast<int>(get_now() - start); int evalInMillis = static_cast<int>(get_now() - start);
platform_log("Encode done in %dms\n", evalInMillis); if (logEnabled)
{
platform_log("zxingEncode: %d ms", evalInMillis);
}
return result; return result;
} }
} }

10
ios/Classes/src/native_zxing.h
Unescape View File

@ -53,12 +53,15 @@ extern "C"
/** /**
* @brief Reads barcode from image. * @brief Reads barcode from image.
* @param bytes Image bytes. * @param bytes Image bytes.
* @param format The format of the barcode
* @param width Image width. * @param width Image width.
* @param height Image height. * @param height Image height.
* @param cropSize Crop size. * @param cropWidth Crop width.
* @param cropHeight Crop height.
* @param logEnabled Log enabled.
* @return Barcode result. * @return Barcode result.
*/ */
struct CodeResult zxingRead(char *bytes, int width, int height, int cropSize); struct CodeResult zxingRead(char *bytes, int format, int width, int height, int cropWidth, int cropHeight, int logEnabled);
/** /**
* @brief Encode a string into a barcode * @brief Encode a string into a barcode
@ -67,10 +70,11 @@ extern "C"
* @param height The height of the barcode * @param height The height of the barcode
* @param format The format of the barcode * @param format The format of the barcode
* @param margin The margin of the barcode * @param margin The margin of the barcode
* @param logEnabled Log enabled.
* @param eccLevel The error correction level of the barcode. Used for Aztec, PDF417, and QRCode only, [0-8]. * @param eccLevel The error correction level of the barcode. Used for Aztec, PDF417, and QRCode only, [0-8].
* @return The barcode data * @return The barcode data
*/ */
struct EncodeResult zxingEncode(char *contents, int width, int height, int format, int margin, int eccLevel); struct EncodeResult zxingEncode(char *contents, int width, int height, int format, int margin, int eccLevel, int logEnabled);
#ifdef __cplusplus #ifdef __cplusplus
} }

13
lib/flutter_zxing.dart
Unescape View File

@ -18,21 +18,26 @@ class FlutterZxing {
static final bindings = GeneratedBindings(dylib); static final bindings = GeneratedBindings(dylib);
static bool logEnabled = true;
static String zxingVersion() { static String zxingVersion() {
return bindings.zxingVersion().cast<Utf8>().toDartString(); return bindings.zxingVersion().cast<Utf8>().toDartString();
} }
static CodeResult zxingRead( static CodeResult zxingRead(Uint8List bytes, int format, int width,
Uint8List bytes, int width, int height, int cropSize) { int height, int cropWidth, int cropHeight) {
return bindings.zxingRead(bytes.allocatePointer(), width, height, cropSize); return bindings.zxingRead(bytes.allocatePointer(), format, width, height,
cropWidth, cropHeight, _logEnabled);
} }
static EncodeResult zxingEncode(String contents, int width, int height, static EncodeResult zxingEncode(String contents, int width, int height,
int format, int margin, int eccLevel) { int format, int margin, int eccLevel) {
var result = bindings.zxingEncode(contents.toNativeUtf8().cast<Int8>(), var result = bindings.zxingEncode(contents.toNativeUtf8().cast<Int8>(),
width, height, format, margin, eccLevel); width, height, format, margin, eccLevel, _logEnabled);
return result; return result;
} }
static int get _logEnabled => logEnabled ? 1 : 0;
} }
// Getting a library that holds needed symbols // Getting a library that holds needed symbols

30
lib/generated_bindings.dart
Unescape View File

@ -34,30 +34,40 @@ class GeneratedBindings {
/// @brief Reads barcode from image. /// @brief Reads barcode from image.
/// @param bytes Image bytes. /// @param bytes Image bytes.
/// @param format The format of the barcode
/// @param width Image width. /// @param width Image width.
/// @param height Image height. /// @param height Image height.
/// @param cropSize Crop size. /// @param cropWidth Crop width.
/// @param cropHeight Crop height.
/// @param logEnabled Log enabled.
/// @return Barcode result. /// @return Barcode result.
CodeResult zxingRead( CodeResult zxingRead(
ffi.Pointer<ffi.Int8> bytes, ffi.Pointer<ffi.Int8> bytes,
int format,
int width, int width,
int height, int height,
int cropSize, int cropWidth,
int cropHeight,
int logEnabled,
) { ) {
return _zxingRead( return _zxingRead(
bytes, bytes,
format,
width, width,
height, height,
cropSize, cropWidth,
cropHeight,
logEnabled,
); );
} }
late final _zxingReadPtr = _lookup< late final _zxingReadPtr = _lookup<
ffi.NativeFunction< ffi.NativeFunction<
CodeResult Function(ffi.Pointer<ffi.Int8>, ffi.Int32, ffi.Int32, CodeResult Function(ffi.Pointer<ffi.Int8>, ffi.Int32, ffi.Int32,
ffi.Int32)>>('zxingRead'); ffi.Int32, ffi.Int32, ffi.Int32, ffi.Int32)>>('zxingRead');
late final _zxingRead = _zxingReadPtr late final _zxingRead = _zxingReadPtr.asFunction<
.asFunction<CodeResult Function(ffi.Pointer<ffi.Int8>, int, int, int)>(); CodeResult Function(
ffi.Pointer<ffi.Int8>, int, int, int, int, int, int)>();
/// @brief Encode a string into a barcode /// @brief Encode a string into a barcode
/// @param contents The string to encode /// @param contents The string to encode
@ -65,6 +75,7 @@ class GeneratedBindings {
/// @param height The height of the barcode /// @param height The height of the barcode
/// @param format The format of the barcode /// @param format The format of the barcode
/// @param margin The margin of the barcode /// @param margin The margin of the barcode
/// @param logEnabled Log enabled.
/// @param eccLevel The error correction level of the barcode. Used for Aztec, PDF417, and QRCode only, [0-8]. /// @param eccLevel The error correction level of the barcode. Used for Aztec, PDF417, and QRCode only, [0-8].
/// @return The barcode data /// @return The barcode data
EncodeResult zxingEncode( EncodeResult zxingEncode(
@ -74,6 +85,7 @@ class GeneratedBindings {
int format, int format,
int margin, int margin,
int eccLevel, int eccLevel,
int logEnabled,
) { ) {
return _zxingEncode( return _zxingEncode(
contents, contents,
@ -82,15 +94,17 @@ class GeneratedBindings {
format, format,
margin, margin,
eccLevel, eccLevel,
logEnabled,
); );
} }
late final _zxingEncodePtr = _lookup< late final _zxingEncodePtr = _lookup<
ffi.NativeFunction< ffi.NativeFunction<
EncodeResult Function(ffi.Pointer<ffi.Int8>, ffi.Int32, ffi.Int32, EncodeResult Function(ffi.Pointer<ffi.Int8>, ffi.Int32, ffi.Int32,
ffi.Int32, ffi.Int32, ffi.Int32)>>('zxingEncode'); ffi.Int32, ffi.Int32, ffi.Int32, ffi.Int32)>>('zxingEncode');
late final _zxingEncode = _zxingEncodePtr.asFunction< late final _zxingEncode = _zxingEncodePtr.asFunction<
EncodeResult Function(ffi.Pointer<ffi.Int8>, int, int, int, int, int)>(); EncodeResult Function(
ffi.Pointer<ffi.Int8>, int, int, int, int, int, int)>();
} }
abstract class Format { abstract class Format {

25
lib/isolate_utils.dart
Unescape View File

@ -11,12 +11,14 @@ import 'image_converter.dart';
/// Bundles data to pass between Isolate /// Bundles data to pass between Isolate
class IsolateData { class IsolateData {
CameraImage cameraImage; CameraImage cameraImage;
int format;
double cropPercent; double cropPercent;
SendPort? responsePort; SendPort? responsePort;
IsolateData( IsolateData(
this.cameraImage, this.cameraImage,
this.format,
this.cropPercent, this.cropPercent,
); );
} }
@ -54,15 +56,20 @@ class IsolateUtils {
await for (final IsolateData? isolateData in port) { await for (final IsolateData? isolateData in port) {
if (isolateData != null) { if (isolateData != null) {
final image = isolateData.cameraImage; try {
final cropPercent = isolateData.cropPercent; final image = isolateData.cameraImage;
final bytes = await convertImage(image); final cropPercent = isolateData.cropPercent;
final cropSize = (min(image.width, image.height) * cropPercent).round(); final bytes = await convertImage(image);
final cropSize =
final result = (min(image.width, image.height) * cropPercent).round();
FlutterZxing.zxingRead(bytes, image.width, image.height, cropSize);
final result = FlutterZxing.zxingRead(bytes, isolateData.format,
isolateData.responsePort?.send(result); image.width, image.height, cropSize, cropSize);
isolateData.responsePort?.send(result);
} on Exception catch (e) {
isolateData.responsePort?.send(e);
}
} }
} }
} }

5
lib/zxing_reader_widget.dart
Unescape View File

@ -18,6 +18,7 @@ class ZxingReaderWidget extends StatefulWidget {
Key? key, Key? key,
required this.onScan, required this.onScan,
this.onControllerCreated, this.onControllerCreated,
this.codeFormat = Format.Any,
this.beep = true, this.beep = true,
this.showCroppingRect = true, this.showCroppingRect = true,
this.scanDelay = const Duration(milliseconds: 500), // 500ms delay this.scanDelay = const Duration(milliseconds: 500), // 500ms delay
@ -27,6 +28,7 @@ class ZxingReaderWidget extends StatefulWidget {
final Function(CodeResult) onScan; final Function(CodeResult) onScan;
final Function(CameraController?)? onControllerCreated; final Function(CameraController?)? onControllerCreated;
final int codeFormat;
final bool beep; final bool beep;
final bool showCroppingRect; final bool showCroppingRect;
final Duration scanDelay; final Duration scanDelay;
@ -144,7 +146,8 @@ class _ZxingReaderWidgetState extends State<ZxingReaderWidget>
if (!_isProcessing) { if (!_isProcessing) {
_isProcessing = true; _isProcessing = true;
try { try {
var isolateData = IsolateData(image, widget.cropPercent); var isolateData =
IsolateData(image, widget.codeFormat, widget.cropPercent);
/// perform inference in separate isolate /// perform inference in separate isolate
CodeResult result = await inference(isolateData); CodeResult result = await inference(isolateData);

2
pubspec.yaml
Unescape View File

@ -8,7 +8,7 @@ environment:
flutter: ">=2.5.0" flutter: ">=2.5.0"
dependencies: dependencies:
camera: ^0.9.4+16 camera: ^0.9.4
ffi: ^1.1.2 ffi: ^1.1.2
flutter: flutter:
sdk: flutter sdk: flutter

Write Preview
Loading…
Cancel
Save