chromium/pdf/pdfium/pdfium_ocr.cc

// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "pdf/pdfium/pdfium_ocr.h"

#include <math.h>
#include <stddef.h>

#include <algorithm>

#include "base/check.h"
#include "base/check_op.h"
#include "base/logging.h"
#include "printing/units.h"
#include "third_party/pdfium/public/cpp/fpdf_scopers.h"
#include "third_party/pdfium/public/fpdf_edit.h"
#include "third_party/pdfium/public/fpdfview.h"
#include "third_party/skia/include/core/SkAlphaType.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkColorType.h"
#include "third_party/skia/include/core/SkImageInfo.h"
#include "third_party/skia/include/core/SkPixmap.h"

namespace chrome_pdf {

namespace {

// Maximum DPI needed for OCR.
constexpr float kMaxNeededDPI = …;
constexpr float kMaxNeededPixelToPointRatio = …;

}  // namespace

gfx::SizeF GetImageSize(FPDF_PAGEOBJECT page_object) { … }

SkBitmap GetImageForOcr(FPDF_DOCUMENT doc,
                        FPDF_PAGE page,
                        FPDF_PAGEOBJECT page_object) { … }

}  // namespace chrome_pdf