media/base/video_types.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef MEDIA_BASE_VIDEO_TYPES_H_
   6 #define MEDIA_BASE_VIDEO_TYPES_H_
   7
   8 #include <string>
   9
  10 #include "build/build_config.h"
  11 #include "media/base/media_export.h"
  12
  13 namespace media {
  14
  15 // Pixel formats roughly based on FOURCC labels, see:
  16 // http://www.fourcc.org/rgb.php and http://www.fourcc.org/yuv.php
  17 // Logged to UMA, so never reuse values. Leave gaps if necessary.
  18 enum VideoPixelFormat {
  19   PIXEL_FORMAT_UNKNOWN = 0,  // Unknown or unspecified format value.
  20   PIXEL_FORMAT_YV12 = 1,     // 12bpp YVU planar 1x1 Y, 2x2 VU samples.
  21   PIXEL_FORMAT_I420 =
  22       2,  // 12bpp YUV planar 1x1 Y, 2x2 UV samples, a.k.a. YU12.
  23   PIXEL_FORMAT_YV16 = 3,   // 16bpp YVU planar 1x1 Y, 2x1 VU samples.
  24   PIXEL_FORMAT_YV12A = 4,  // 20bpp YUVA planar 1x1 Y, 2x2 VU, 1x1 A samples.
  25   PIXEL_FORMAT_YV24 = 5,   // 24bpp YUV planar, no subsampling.
  26 #if defined(OS_MACOSX) || defined(OS_CHROMEOS)
  27   PIXEL_FORMAT_NV12 =
  28       6,  // 12bpp with Y plane followed by a 2x2 interleaved UV plane.
  29 #endif
  30   PIXEL_FORMAT_ARGB = 7,  // 32bpp ARGB, 1 plane.
  31   PIXEL_FORMAT_XRGB = 8,  // 24bpp XRGB, 1 plane.
  32   // Please update UMA histogram enumeration when adding new formats here.
  33   PIXEL_FORMAT_MAX =
  34       PIXEL_FORMAT_XRGB,  // Must always be equal to largest entry logged.
  35 };
  36
  37 // Color space or color range used for the pixels.
  38 // Logged to UMA, so never reuse values. Leave gaps if necessary.
  39 enum ColorSpace {
  40   COLOR_SPACE_UNSPECIFIED = 0,  // In general this is Rec601.
  41   // The JPEG color space is the combination of Rec.601 and full range colors
  42   // (aka pc range colors).
  43   COLOR_SPACE_JPEG = 1,
  44   COLOR_SPACE_HD_REC709 = 2,  // Rec709 "HD" color space.
  45   COLOR_SPACE_SD_REC601 = 3,  // Rec601 "SD" color space.
  46   COLOR_SPACE_MAX = COLOR_SPACE_SD_REC601,
  47 };
  48
  49 // Returns the name of a Format as a string.
  50 MEDIA_EXPORT std::string VideoPixelFormatToString(VideoPixelFormat format);
  51
  52 // Returns true if |format| is a YUV non interleaved format.
  53 MEDIA_EXPORT bool IsYuvPlanar(VideoPixelFormat format);
  54
  55 }  // namespace media
  56
  57 #endif  // MEDIA_BASE_VIDEO_TYPES_H_