fe_component_transfer.cc | Explore in Territory

/*
 * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <[email protected]>
 * Copyright (C) 2004, 2005 Rob Buis <[email protected]>
 * Copyright (C) 2005 Eric Seidel <[email protected]>
 * Copyright (C) 2009 Dirk Schulze <[email protected]>
 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "third_party/blink/renderer/platform/graphics/filters/fe_component_transfer.h"

#include <algorithm>

#include "base/types/optional_util.h"
#include "third_party/blink/renderer/platform/graphics/filters/paint_filter_builder.h"
#include "third_party/blink/renderer/platform/wtf/math_extras.h"
#include "third_party/blink/renderer/platform/wtf/text/text_stream.h"

namespace blink {

TransferType;

FEComponentTransfer::FEComponentTransfer(
    Filter* filter,
    const ComponentTransferFunction& red_func,
    const ComponentTransferFunction& green_func,
    const ComponentTransferFunction& blue_func,
    const ComponentTransferFunction& alpha_func)
    : … { … }

static void Identity(unsigned char*, const ComponentTransferFunction&) { … }

static void Table(unsigned char* values,
                  const ComponentTransferFunction& transfer_function) { … }

static void Discrete(unsigned char* values,
                     const ComponentTransferFunction& transfer_function) { … }

static void Linear(unsigned char* values,
                   const ComponentTransferFunction& transfer_function) { … }

static void Gamma(unsigned char* values,
                  const ComponentTransferFunction& transfer_function) { … }

bool FEComponentTransfer::AffectsTransparentPixels() const { … }

sk_sp<PaintFilter> FEComponentTransfer::CreateImageFilter() { … }

void FEComponentTransfer::GetValues(unsigned char r_values[256],
                                    unsigned char g_values[256],
                                    unsigned char b_values[256],
                                    unsigned char a_values[256]) { … }

static WTF::TextStream& operator<<(WTF::TextStream& ts,
                                   const ComponentTransferType& type) { … }

static WTF::TextStream& operator<<(WTF::TextStream& ts,
                                   const ComponentTransferFunction& function) { … }

WTF::TextStream& FEComponentTransfer::ExternalRepresentation(
    WTF::TextStream& ts,
    int indent) const { … }

}  // namespace blink
chromium/third_party/blink/renderer/platform/graphics/filters/fe_component_transfer.cc
