| /* |
| * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef WEBRTC_MODULES_DESKTOP_CAPTURE_RGBA_COLOR_H_ |
| #define WEBRTC_MODULES_DESKTOP_CAPTURE_RGBA_COLOR_H_ |
| |
| #include <stdint.h> |
| |
| #include "webrtc/modules/desktop_capture/desktop_frame.h" |
| |
| namespace webrtc { |
| |
| // A four-byte structure to store a color in BGRA format. This structure also |
| // provides functions to be created from uint8_t array, say, |
| // DesktopFrame::data(). It always uses BGRA order for internal storage to match |
| // DesktopFrame::data(). |
| struct RgbaColor final { |
| // Creates a color with BGRA channels. |
| RgbaColor(uint8_t blue, uint8_t green, uint8_t red, uint8_t alpha); |
| |
| // Creates a color with BGR channels, and set alpha channel to 255 (opaque). |
| RgbaColor(uint8_t blue, uint8_t green, uint8_t red); |
| |
| // Creates a color from four-byte in BGRA order, i.e. DesktopFrame::data(). |
| explicit RgbaColor(const uint8_t* bgra); |
| |
| // Creates a color from BGRA channels in a uint format. Consumers should make |
| // sure the memory order of the uint32_t is always BGRA from left to right, no |
| // matter the system endian. This function creates an equivalent RgbaColor |
| // instance from the ToUInt32() result of another RgbaColor instance. |
| explicit RgbaColor(uint32_t bgra); |
| |
| // Returns true if |this| and |right| is the same color. |
| bool operator==(const RgbaColor& right) const; |
| |
| // Returns true if |this| and |right| are different colors. |
| bool operator!=(const RgbaColor& right) const; |
| |
| uint32_t ToUInt32() const; |
| |
| uint8_t blue; |
| uint8_t green; |
| uint8_t red; |
| uint8_t alpha; |
| }; |
| static_assert( |
| DesktopFrame::kBytesPerPixel == sizeof(RgbaColor), |
| "A pixel in DesktopFrame should be safe to be represented by a RgbaColor"); |
| |
| } // namespace webrtc |
| |
| #endif // WEBRTC_MODULES_DESKTOP_CAPTURE_RGBA_COLOR_H_ |