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/*
* Copyright (c) 2011 The LibYuv 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.
*/
/*
* Common definitions for video, including fourcc and VideoFormat
*/
#ifndef LIBYUV_SOURCE_VIDEO_COMMON_H_
#define LIBYUV_SOURCE_VIDEO_COMMON_H_
#include <string>
#include "libyuv/basic_types.h"
namespace libyuv {
//////////////////////////////////////////////////////////////////////////////
// Definition of fourcc.
//////////////////////////////////////////////////////////////////////////////
// Convert four characters to a fourcc code.
// Needs to be a macro otherwise the OS X compiler complains when the kFormat*
// constants are used in a switch.
#define FOURCC(a, b, c, d) (\
(static_cast<uint32>(a)) | (static_cast<uint32>(b) << 8) | \
(static_cast<uint32>(c) << 16) | (static_cast<uint32>(d) << 24))
// Some good pages discussing FourCC codes:
// http://developer.apple.com/quicktime/icefloe/dispatch020.html
// http://www.fourcc.org/yuv.php
enum FourCC {
// Canonical fourcc codes used in our code.
FOURCC_I420 = FOURCC('I', '4', '2', '0'),
FOURCC_YV12 = FOURCC('Y', 'V', '1', '2'),
FOURCC_YUY2 = FOURCC('Y', 'U', 'Y', '2'),
FOURCC_UYVY = FOURCC('U', 'Y', 'V', 'Y'),
FOURCC_M420 = FOURCC('M', '4', '2', '0'),
FOURCC_24BG = FOURCC('2', '4', 'B', 'G'),
FOURCC_ABGR = FOURCC('A', 'B', 'G', 'R'),
FOURCC_BGRA = FOURCC('B', 'G', 'R', 'A'),
FOURCC_ARGB = FOURCC('A', 'R', 'G', 'B'),
FOURCC_MJPG = FOURCC('M', 'J', 'P', 'G'),
FOURCC_RAW = FOURCC('r', 'a', 'w', ' '),
FOURCC_NV21 = FOURCC('N', 'V', '2', '1'),
FOURCC_NV12 = FOURCC('N', 'V', '1', '2'),
// Next four are Bayer RGB formats. The four characters define the order of
// the colours in each 2x2 pixel grid, going left-to-right and top-to-bottom.
FOURCC_RGGB = FOURCC('R', 'G', 'G', 'B'),
FOURCC_BGGR = FOURCC('B', 'G', 'G', 'R'),
FOURCC_GRBG = FOURCC('G', 'R', 'B', 'G'),
FOURCC_GBRG = FOURCC('G', 'B', 'R', 'G'),
// Aliases for canonical fourcc codes, replaced with their canonical
// equivalents by CanonicalFourCC().
FOURCC_IYUV = FOURCC('I', 'Y', 'U', 'V'), // Alias for I420
FOURCC_YU12 = FOURCC('Y', 'U', '1', '2'), // Alias for I420
FOURCC_YUYV = FOURCC('Y', 'U', 'Y', 'V'), // Alias for YUY2
FOURCC_YUVS = FOURCC('y', 'u', 'v', 's'), // Alias for YUY2 on Mac
FOURCC_HDYC = FOURCC('H', 'D', 'Y', 'C'), // Alias for UYVY
FOURCC_2VUY = FOURCC('2', 'v', 'u', 'y'), // Alias for UYVY
FOURCC_JPEG = FOURCC('J', 'P', 'E', 'G'), // Alias for MJPG
FOURCC_BA81 = FOURCC('B', 'A', '8', '1'), // Alias for BGGR
FOURCC_RGB3 = FOURCC('R', 'G', 'B', '3'), // Alias for RAW
FOURCC_BGR3 = FOURCC('B', 'G', 'R', '3'), // Alias for 24BG
// Match any fourcc.
FOURCC_ANY = 0xFFFFFFFF,
};
// Converts fourcc aliases into canonical ones.
uint32 CanonicalFourCC(uint32 fourcc);
} // namespace libyuv
#endif // LIBYUV_SOURCE_VIDEO_COMMON_H_
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