text: /*
   *  Copyright 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 INCLUDE_LIBYUV_VIDEO_COMMON_H_  // NOLINT
  #define INCLUDE_LIBYUV_VIDEO_COMMON_H_
  
  #include "../libyuv/basic_types.h"
  
  #ifdef __cplusplus
  namespace libyuv {
  extern "C" {
  #endif
  
  //////////////////////////////////////////////////////////////////////////////
  // Definition of FourCC codes
  //////////////////////////////////////////////////////////////////////////////
  
  // 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.
  #ifdef __cplusplus
  #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))
  #else
  #define FOURCC(a, b, c, d) ( \
      ((uint32)(a)) | ((uint32)(b) << 8) | /* NOLINT */ \
      ((uint32)(c) << 16) | ((uint32)(d) << 24))  /* NOLINT */
  #endif
  
  // Some pages discussing FourCC codes:
  //   http://www.fourcc.org/yuv.php
  //   http://v4l2spec.bytesex.org/spec/book1.htm
  //   http://developer.apple.com/quicktime/icefloe/dispatch020.html
  //   http://msdn.microsoft.com/library/windows/desktop/dd206750.aspx#nv12
  //   http://people.xiph.org/~xiphmont/containers/nut/nut4cc.txt
  
  // FourCC codes grouped according to implementation efficiency.
  // Primary formats should convert in 1 efficient step.
  // Secondary formats are converted in 2 steps.
  // Auxilliary formats call primary converters.
  enum FourCC {
    // 9 Primary YUV formats: 5 planar, 2 biplanar, 2 packed.
    FOURCC_I420 = FOURCC('I', '4', '2', '0'),
    FOURCC_I422 = FOURCC('I', '4', '2', '2'),
    FOURCC_I444 = FOURCC('I', '4', '4', '4'),
    FOURCC_I411 = FOURCC('I', '4', '1', '1'),
    FOURCC_I400 = FOURCC('I', '4', '0', '0'),
    FOURCC_NV21 = FOURCC('N', 'V', '2', '1'),
    FOURCC_NV12 = FOURCC('N', 'V', '1', '2'),
    FOURCC_YUY2 = FOURCC('Y', 'U', 'Y', '2'),
    FOURCC_UYVY = FOURCC('U', 'Y', 'V', 'Y'),
  
    // 2 Secondary YUV formats: row biplanar.
    FOURCC_M420 = FOURCC('M', '4', '2', '0'),
    FOURCC_Q420 = FOURCC('Q', '4', '2', '0'),
  
    // 9 Primary RGB formats: 4 32 bpp, 2 24 bpp, 3 16 bpp.
    FOURCC_ARGB = FOURCC('A', 'R', 'G', 'B'),
    FOURCC_BGRA = FOURCC('B', 'G', 'R', 'A'),
    FOURCC_ABGR = FOURCC('A', 'B', 'G', 'R'),
    FOURCC_24BG = FOURCC('2', '4', 'B', 'G'),
    FOURCC_RAW  = FOURCC('r', 'a', 'w', ' '),
    FOURCC_RGBA = FOURCC('R', 'G', 'B', 'A'),
    FOURCC_RGBP = FOURCC('R', 'G', 'B', 'P'),  // rgb565 LE.
    FOURCC_RGBO = FOURCC('R', 'G', 'B', 'O'),  // argb1555 LE.
    FOURCC_R444 = FOURCC('R', '4', '4', '4'),  // argb4444 LE.
  
    // 4 Secondary RGB formats: 4 Bayer Patterns.
    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'),
  
    // 1 Primary Compressed YUV format.
    FOURCC_MJPG = FOURCC('M', 'J', 'P', 'G'),
  
    // 5 Auxiliary YUV variations: 3 with U and V planes are swapped, 1 Alias.
    FOURCC_YV12 = FOURCC('Y', 'V', '1', '2'),
    FOURCC_YV16 = FOURCC('Y', 'V', '1', '6'),
    FOURCC_YV24 = FOURCC('Y', 'V', '2', '4'),
    FOURCC_YU12 = FOURCC('Y', 'U', '1', '2'),  // Linux version of I420.
    FOURCC_J420 = FOURCC('J', '4', '2', '0'),
    FOURCC_J400 = FOURCC('J', '4', '0', '0'),
  
    // 14 Auxiliary aliases.  CanonicalFourCC() maps these to canonical fourcc.
    FOURCC_IYUV = FOURCC('I', 'Y', 'U', 'V'),  // Alias for I420.
    FOURCC_YU16 = FOURCC('Y', 'U', '1', '6'),  // Alias for I422.
    FOURCC_YU24 = FOURCC('Y', 'U', '2', '4'),  // Alias for I444.
    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 on Mac.
    FOURCC_JPEG = FOURCC('J', 'P', 'E', 'G'),  // Alias for MJPG.
    FOURCC_DMB1 = FOURCC('d', 'm', 'b', '1'),  // Alias for MJPG on Mac.
    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.
    FOURCC_CM32 = FOURCC(0, 0, 0, 32),  // Alias for BGRA kCMPixelFormat_32ARGB
    FOURCC_CM24 = FOURCC(0, 0, 0, 24),  // Alias for RAW kCMPixelFormat_24RGB
    FOURCC_L555 = FOURCC('L', '5', '5', '5'),  // Alias for RGBO.
    FOURCC_L565 = FOURCC('L', '5', '6', '5'),  // Alias for RGBP.
    FOURCC_5551 = FOURCC('5', '5', '5', '1'),  // Alias for RGBO.
  
    // 1 Auxiliary compressed YUV format set aside for capturer.
    FOURCC_H264 = FOURCC('H', '2', '6', '4'),
  
    // Match any fourcc.
    FOURCC_ANY = -1,
  };
  
  enum FourCCBpp {
    // Canonical fourcc codes used in our code.
    FOURCC_BPP_I420 = 12,
    FOURCC_BPP_I422 = 16,
    FOURCC_BPP_I444 = 24,
    FOURCC_BPP_I411 = 12,
    FOURCC_BPP_I400 = 8,
    FOURCC_BPP_NV21 = 12,
    FOURCC_BPP_NV12 = 12,
    FOURCC_BPP_YUY2 = 16,
    FOURCC_BPP_UYVY = 16,
    FOURCC_BPP_M420 = 12,
    FOURCC_BPP_Q420 = 12,
    FOURCC_BPP_ARGB = 32,
    FOURCC_BPP_BGRA = 32,
    FOURCC_BPP_ABGR = 32,
    FOURCC_BPP_RGBA = 32,
    FOURCC_BPP_24BG = 24,
    FOURCC_BPP_RAW  = 24,
    FOURCC_BPP_RGBP = 16,
    FOURCC_BPP_RGBO = 16,
    FOURCC_BPP_R444 = 16,
    FOURCC_BPP_RGGB = 8,
    FOURCC_BPP_BGGR = 8,
    FOURCC_BPP_GRBG = 8,
    FOURCC_BPP_GBRG = 8,
    FOURCC_BPP_YV12 = 12,
    FOURCC_BPP_YV16 = 16,
    FOURCC_BPP_YV24 = 24,
    FOURCC_BPP_YU12 = 12,
    FOURCC_BPP_J420 = 12,
    FOURCC_BPP_J400 = 8,
    FOURCC_BPP_MJPG = 0,  // 0 means unknown.
    FOURCC_BPP_H264 = 0,
    FOURCC_BPP_IYUV = 12,
    FOURCC_BPP_YU16 = 16,
    FOURCC_BPP_YU24 = 24,
    FOURCC_BPP_YUYV = 16,
    FOURCC_BPP_YUVS = 16,
    FOURCC_BPP_HDYC = 16,
    FOURCC_BPP_2VUY = 16,
    FOURCC_BPP_JPEG = 1,
    FOURCC_BPP_DMB1 = 1,
    FOURCC_BPP_BA81 = 8,
    FOURCC_BPP_RGB3 = 24,
    FOURCC_BPP_BGR3 = 24,
    FOURCC_BPP_CM32 = 32,
    FOURCC_BPP_CM24 = 24,
  
    // Match any fourcc.
    FOURCC_BPP_ANY  = 0,  // 0 means unknown.
  };
  
  // Converts fourcc aliases into canonical ones.
  LIBYUV_API uint32 CanonicalFourCC(uint32 fourcc);
  
  #ifdef __cplusplus
  }  // extern "C"
  }  // namespace libyuv
  #endif
  
  #endif  // INCLUDE_LIBYUV_VIDEO_COMMON_H_  NOLINT
  