feat: add symbol field to ReadResult and WriteResult

.changeset/sharp-shrimps-enjoy.md

@@ -0,0 +1,5 @@
+---
+"zxing-wasm": minor
+---
+
+feat: add `symbol` field to `ReadResult` and `WriteResult`

.gitattributes

@@ -1 +1 @@
-__snapshots__/** linguist-vendored
+tests/__snapshots__/** linguist-generated=true

main.ts

@@ -3,7 +3,7 @@ import {
   type WriterOptions,
   readBarcodes,
   writeBarcode,
-} from "./src/full/index";
+} from "./src/full/index.js";
 
 const imageFile = await fetch(
   "https://api.qrserver.com/v1/create-qr-code/?size=150x150&data=Hello%20world!",

src/bindings/barcodeSymbol.ts

@@ -0,0 +1,17 @@
+/**
+ * Barcode symbol in the shape of a one-channel image.
+ */
+export interface BarcodeSymbol {
+  /**
+   * Image data of the barcode symbol.
+   */
+  data: Uint8ClampedArray;
+  /**
+   * Width of the barcode symbol.
+   */
+  width: number;
+  /**
+   * Height of the barcode symbol.
+   */
+  height: number;
+}

src/bindings/readResult.ts

@@ -1,4 +1,5 @@
 import { type ReadOutputBarcodeFormat, decodeFormat } from "./barcodeFormat.js";
+import type { BarcodeSymbol } from "./barcodeSymbol.js";
 import { type ContentType, decodeContentType } from "./contentType.js";
 import type { EcLevel } from "./ecLevel.js";
 import type { Position, ZXingPosition } from "./position.js";
@@ -104,6 +105,10 @@ export interface ZXingReadResult {
    * @deprecated
    */
   version: string;
+  /**
+   * Barcode symbol in the shape of a one-channel image.
+   */
+  symbol: BarcodeSymbol;
 }
 
 /**

src/bindings/writeResult.ts

@@ -1,3 +1,5 @@
+import type { BarcodeSymbol } from "./barcodeSymbol.js";
+
 /**
  * @internal
  */
@@ -21,6 +23,10 @@ export interface ZXingWriteResult {
    * @see {@link WriteResult.error | `WriteResult.error`}
    */
   error: string;
+  /**
+   * Barcode symbol in the shape of a one-channel image.
+   */
+  symbol: BarcodeSymbol;
 }
 
 /**

src/cpp/ZXingWasm.cpp

@@ -24,6 +24,12 @@
 
 using namespace emscripten;
 
+struct Symbol {
+  val data;
+  int width;
+  int height;
+};
+
 #if defined(READER)
 
 struct JsReaderOptions {
@@ -32,9 +38,7 @@ struct JsReaderOptions {
   bool tryRotate;
   bool tryInvert;
   bool tryDownscale;
-  #ifdef ZXING_EXPERIMENTAL_API
   bool tryDenoise;
-  #endif
   uint8_t binarizer;
   bool isPure;
   uint16_t downscaleThreshold;
@@ -69,6 +73,7 @@ struct JsReadResult {
   bool readerInit;
   int lineCount;
   std::string version;
+  Symbol symbol;
 };
 
 using JsReadResults = std::vector<JsReadResult>;
@@ -83,9 +88,7 @@ JsReadResults readBarcodes(ZXing::ImageView imageView, const JsReaderOptions &js
         .setTryRotate(jsReaderOptions.tryRotate)
         .setTryInvert(jsReaderOptions.tryInvert)
         .setTryDownscale(jsReaderOptions.tryDownscale)
-  #ifdef ZXING_EXPERIMENTAL_API
         .setTryDenoise(jsReaderOptions.tryDenoise)
-  #endif
         .setBinarizer(static_cast<ZXing::Binarizer>(jsReaderOptions.binarizer))
         .setIsPure(jsReaderOptions.isPure)
         .setDownscaleThreshold(jsReaderOptions.downscaleThreshold)
@@ -100,6 +103,7 @@ JsReadResults readBarcodes(ZXing::ImageView imageView, const JsReaderOptions &js
     );
 
     thread_local const val Uint8Array = val::global("Uint8Array");
+    thread_local const val Uint8ClampedArray = val::global("Uint8ClampedArray");
 
     JsReadResults jsReadResults;
     jsReadResults.reserve(barcodes.size());
@@ -125,7 +129,14 @@ JsReadResults readBarcodes(ZXing::ImageView imageView, const JsReaderOptions &js
          .sequenceId = barcode.sequenceId(),
          .readerInit = barcode.readerInit(),
          .lineCount = barcode.lineCount(),
-         .version = barcode.version()}
+         .version = barcode.version(),
+         .symbol = std::move(Symbol{
+           .data = std::move(
+             Uint8ClampedArray.new_(val(typed_memory_view(barcode.symbol().rowStride() * barcode.symbol().height(), barcode.symbol().data())))
+           ),
+           .width = barcode.symbol().width(),
+           .height = barcode.symbol().height()
+         })}
       );
     }
     return jsReadResults;
@@ -194,6 +205,7 @@ struct JsWriteResult {
   std::string svg;
   std::string utf8;
   val image;
+  Symbol symbol;
 };
 
 JsWriteResult writeBarcodeFromText(std::string text, const JsWriterOptions &jsWriterOptions) {
@@ -204,14 +216,22 @@ JsWriteResult writeBarcodeFromText(std::string text, const JsWriterOptions &jsWr
     auto image = ZXing::WriteBarcodeToImage(barcode, writerOptions);
 
     thread_local const val Uint8Array = val::global("Uint8Array");
+    thread_local const val Uint8ClampedArray = val::global("Uint8ClampedArray");
 
     int len;
     uint8_t *bytes = stbi_write_png_to_mem(image.data(), image.rowStride(), image.width(), image.height(), ZXing::PixStride(image.format()), &len);
 
     return {
       .svg = ZXing::WriteBarcodeToSVG(barcode, writerOptions),
       .utf8 = ZXing::WriteBarcodeToUtf8(barcode, writerOptions),
-      .image = std::move(Uint8Array.new_(val(typed_memory_view(len, bytes))))
+      .image = std::move(Uint8Array.new_(val(typed_memory_view(len, bytes)))),
+      .symbol = std::move(Symbol{
+        .data =
+          std::move(Uint8ClampedArray.new_(val(typed_memory_view(barcode.symbol().rowStride() * barcode.symbol().height(), barcode.symbol().data())))
+          ),
+        .width = barcode.symbol().width(),
+        .height = barcode.symbol().height()
+      })
     };
   } catch (const std::exception &e) {
     return {.error = e.what()};
@@ -228,14 +248,22 @@ JsWriteResult writeBarcodeFromBytes(int bufferPtr, int bufferLength, const JsWri
     auto image = ZXing::WriteBarcodeToImage(barcode, writerOptions);
 
     thread_local const val Uint8Array = val::global("Uint8Array");
+    thread_local const val Uint8ClampedArray = val::global("Uint8ClampedArray");
 
     int len;
     uint8_t *bytes = stbi_write_png_to_mem(image.data(), image.rowStride(), image.width(), image.height(), ZXing::PixStride(image.format()), &len);
 
     return {
       .svg = ZXing::WriteBarcodeToSVG(barcode, writerOptions),
       .utf8 = ZXing::WriteBarcodeToUtf8(barcode, writerOptions),
-      .image = std::move(Uint8Array.new_(val(typed_memory_view(len, bytes))))
+      .image = std::move(Uint8Array.new_(val(typed_memory_view(len, bytes)))),
+      .symbol = std::move(Symbol{
+        .data =
+          std::move(Uint8ClampedArray.new_(val(typed_memory_view(barcode.symbol().rowStride() * barcode.symbol().height(), barcode.symbol().data())))
+          ),
+        .width = barcode.symbol().width(),
+        .height = barcode.symbol().height()
+      })
     };
   } catch (const std::exception &e) {
     return {.error = e.what()};
@@ -248,6 +276,8 @@ JsWriteResult writeBarcodeFromBytes(int bufferPtr, int bufferLength, const JsWri
 
 EMSCRIPTEN_BINDINGS(ZXingWasm) {
 
+  value_object<Symbol>("Symbol").field("data", &Symbol::data).field("width", &Symbol::width).field("height", &Symbol::height);
+
 #if defined(READER)
 
   value_object<JsReaderOptions>("ReaderOptions")
@@ -256,9 +286,7 @@ EMSCRIPTEN_BINDINGS(ZXingWasm) {
     .field("tryRotate", &JsReaderOptions::tryRotate)
     .field("tryInvert", &JsReaderOptions::tryInvert)
     .field("tryDownscale", &JsReaderOptions::tryDownscale)
-  #ifdef ZXING_EXPERIMENTAL_API
     .field("tryDenoise", &JsReaderOptions::tryDenoise)
-  #endif
     .field("binarizer", &JsReaderOptions::binarizer)
     .field("isPure", &JsReaderOptions::isPure)
     .field("downscaleThreshold", &JsReaderOptions::downscaleThreshold)
@@ -299,7 +327,8 @@ EMSCRIPTEN_BINDINGS(ZXingWasm) {
     .field("sequenceId", &JsReadResult::sequenceId)
     .field("readerInit", &JsReadResult::readerInit)
     .field("lineCount", &JsReadResult::lineCount)
-    .field("version", &JsReadResult::version);
+    .field("version", &JsReadResult::version)
+    .field("symbol", &JsReadResult::symbol);
 
   register_vector<JsReadResult>("ReadResults");
 
@@ -325,7 +354,8 @@ EMSCRIPTEN_BINDINGS(ZXingWasm) {
     .field("error", &JsWriteResult::error)
     .field("svg", &JsWriteResult::svg)
     .field("utf8", &JsWriteResult::utf8)
-    .field("image", &JsWriteResult::image);
+    .field("image", &JsWriteResult::image)
+    .field("symbol", &JsWriteResult::symbol);
 
   function("writeBarcodeFromText", &writeBarcodeFromText);
   function("writeBarcodeFromBytes", &writeBarcodeFromBytes);