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// Copyright 2023 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#include "pw_framebuffer/reader.h"
#include <cstdint>
#include "gtest/gtest.h"
#include "pw_color/color.h"
#include "pw_color/colors_endesga32.h"
#include "pw_color/colors_pico8.h"
#include "pw_framebuffer/framebuffer.h"
#include "pw_framebuffer/reader.h"
#include "pw_framebuffer/writer.h"
using pw::color::color_rgb565_t;
namespace pw::framebuffer {
namespace {
TEST(FramebufferReader, SetPixelGetPixel) {
color_rgb565_t data[8 * 8];
Framebuffer fb(data, PixelFormat::RGB565, {8, 8}, 8 * sizeof(data[0]));
const color_rgb565_t* pixel_data =
static_cast<const color_rgb565_t*>(fb.data());
color_rgb565_t indigo = 0x83b3;
{
FramebufferWriter writer(fb);
writer.Fill(0);
for (uint16_t i = 0; i < 8; i++) {
writer.SetPixel(i, i, indigo);
}
}
FramebufferReader reader(fb);
EXPECT_EQ(pixel_data[0], indigo);
EXPECT_EQ(pixel_data[1], 0);
EXPECT_EQ(pixel_data[8 * 8 - 2], 0);
EXPECT_EQ(pixel_data[8 * 8 - 1], indigo);
Result<color_rgb565_t> c;
c = reader.GetPixel(0, 0);
ASSERT_TRUE(c.ok());
EXPECT_EQ(c.value(), indigo);
c = reader.GetPixel(0, 1);
ASSERT_TRUE(c.ok());
EXPECT_EQ(c.value(), 0);
c = reader.GetPixel(6, 7);
ASSERT_TRUE(c.ok());
EXPECT_EQ(c.value(), 0);
c = reader.GetPixel(7, 7);
ASSERT_TRUE(c.ok());
EXPECT_EQ(c.value(), indigo);
}
} // namespace
} // namespace pw::framebuffer