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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/ozone/platform/wayland/host/single_pixel_buffer.h"
#include <single-pixel-buffer-v1-client-protocol.h>
#include <wayland-util.h>
#include "base/logging.h"
#include "ui/ozone/platform/wayland/common/wayland_object.h"
#include "ui/ozone/platform/wayland/common/wayland_util.h"
#include "ui/ozone/platform/wayland/host/wayland_connection.h"
namespace ui {
namespace {
constexpr uint32_t kVersion = 1;
}
// static
constexpr char SinglePixelBuffer::kInterfaceName[];
// static
void SinglePixelBuffer::Instantiate(WaylandConnection* connection,
wl_registry* registry,
uint32_t name,
const std::string& interface,
uint32_t version) {
CHECK_EQ(interface, kInterfaceName) << "Expected \"" << kInterfaceName
<< "\" but got \"" << interface << "\"";
if (connection->single_pixel_buffer_ ||
!wl::CanBind(interface, version, kVersion, kVersion)) {
return;
}
auto single_pixel_buffer =
wl::Bind<wp_single_pixel_buffer_manager_v1>(registry, name, kVersion);
if (!single_pixel_buffer) {
LOG(ERROR) << "Failed to bind wp_single_pixel_buffer_manager";
return;
}
connection->single_pixel_buffer_ = std::make_unique<SinglePixelBuffer>(
single_pixel_buffer.release(), connection);
}
SinglePixelBuffer::SinglePixelBuffer(
wp_single_pixel_buffer_manager_v1* single_pixel_buffer,
WaylandConnection* connection)
: single_pixel_buffer_(single_pixel_buffer) {}
SinglePixelBuffer::~SinglePixelBuffer() = default;
wl::Object<wl_buffer> SinglePixelBuffer::CreateSinglePixelBuffer(
const SkColor4f& color) {
// Single Pixel Buffer protocol uses premultiplied color.
uint32_t red = UINT_MAX * (double)color.fR * (double)color.fA;
uint32_t green = UINT_MAX * (double)color.fG * (double)color.fA;
uint32_t blue = UINT_MAX * (double)color.fB * (double)color.fA;
uint32_t alpha = UINT_MAX * (double)color.fA;
auto buffer = wl::Object<wl_buffer>(
wp_single_pixel_buffer_manager_v1_create_u32_rgba_buffer(
single_pixel_buffer_.get(), red, green, blue, alpha));
return buffer;
}
} // namespace ui
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