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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SERVICES_SHAPE_DETECTION_CHROME_SHAPE_DETECTION_API_H_
#define SERVICES_SHAPE_DETECTION_CHROME_SHAPE_DETECTION_API_H_
#include <cstddef>
#include <cstdint>
// This header defines the public interface to the Chrome Shape Detection shared
// library.
extern "C" {
#define CHROME_BARCODE_FORMAT_UNKNOWN (0)
#define CHROME_BARCODE_FORMAT_AZTEC (1 << 0)
#define CHROME_BARCODE_FORMAT_CODE_128 (1 << 1)
#define CHROME_BARCODE_FORMAT_CODE_39 (1 << 2)
#define CHROME_BARCODE_FORMAT_CODE_93 (1 << 3)
#define CHROME_BARCODE_FORMAT_CODABAR (1 << 4)
#define CHROME_BARCODE_FORMAT_DATA_MATRIX (1 << 5)
#define CHROME_BARCODE_FORMAT_EAN_13 (1 << 6)
#define CHROME_BARCODE_FORMAT_EAN_8 (1 << 7)
#define CHROME_BARCODE_FORMAT_ITF (1 << 8)
#define CHROME_BARCODE_FORMAT_PDF417 (1 << 9)
#define CHROME_BARCODE_FORMAT_QR_CODE (1 << 10)
#define CHROME_BARCODE_FORMAT_UPC_A (1 << 11)
#define CHROME_BARCODE_FORMAT_UPC_E (1 << 12)
// Bitmap of expected barcode formats.
using ChromeBarcodeFormat = uint32_t;
struct ChromePointF {
float x;
float y;
};
struct ChromeBarcodeDetectionResult {
uint8_t* value;
size_t value_size;
ChromePointF* corner_points;
size_t corner_points_size;
ChromeBarcodeFormat format;
};
// IMPORTANT: All functions that call ChromeShapeDetectionAPI should be
// annotated with DISABLE_CFI_DLSYM.
// Table of C API functions defined within the library.
struct ChromeShapeDetectionAPI {
// Detects barcodes in the given grayscale image.
void (*DetectBarcodes)(size_t width,
size_t height,
uint8_t* data,
ChromeBarcodeFormat expected_formats,
ChromeBarcodeDetectionResult** results,
size_t* results_size);
void (*DestroyDetectionResults)(ChromeBarcodeDetectionResult* results,
size_t size);
// TODO(crbug.com/442001297): Remove once the fallback is default-enabled.
void (*DetectBarcodesWithFallback)(
size_t width,
size_t height,
uint8_t* data,
ChromeBarcodeFormat expected_formats,
bool enable_noop_fallback_in_refine_transform_failure,
ChromeBarcodeDetectionResult** results,
size_t* results_size);
};
// Signature of the GetChromeShapeDetectionAPI() function which the shared
// library exports.
using ChromeShapeDetectionAPIGetter = const ChromeShapeDetectionAPI* (*)();
} // extern "C"
#endif // SERVICES_SHAPE_DETECTION_CHROME_SHAPE_DETECTION_API_H_
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