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 // Ordered as planar, semi-planar, YUV-packed, and RGB formats.
  19 enum VideoPixelFormat {
  20   PIXEL_FORMAT_UNKNOWN = 0,  // Unknown or unspecified format value.
  21   PIXEL_FORMAT_I420 =
  22       1,  // 12bpp YUV planar 1x1 Y, 2x2 UV samples, a.k.a. YU12.
  23   PIXEL_FORMAT_YV12 = 2,   // 12bpp YVU planar 1x1 Y, 2x2 VU samples.
  24   PIXEL_FORMAT_YV16 = 3,   // 16bpp YVU planar 1x1 Y, 2x1 VU samples.
  25   PIXEL_FORMAT_YV12A = 4,  // 20bpp YUVA planar 1x1 Y, 2x2 VU, 1x1 A samples.
  26   PIXEL_FORMAT_YV24 = 5,   // 24bpp YUV planar, no subsampling.
  27   PIXEL_FORMAT_NV12 =
  28       6,  // 12bpp with Y plane followed by a 2x2 interleaved UV plane.
  29   PIXEL_FORMAT_NV21 =
  30       7,  // 12bpp with Y plane followed by a 2x2 interleaved VU plane.
  31   PIXEL_FORMAT_UYVY =
  32       8,  // 16bpp interleaved 2x1 U, 1x1 Y, 2x1 V, 1x1 Y samples.
  33   PIXEL_FORMAT_YUY2 =
  34       9,  // 16bpp interleaved 1x1 Y, 2x1 U, 1x1 Y, 2x1 V samples.
  35   PIXEL_FORMAT_ARGB = 10,   // 32bpp ARGB, 1 plane.
  36   PIXEL_FORMAT_XRGB = 11,   // 24bpp XRGB, 1 plane.
  37   PIXEL_FORMAT_RGB24 = 12,  // 24bpp BGR, 1 plane.
  38   PIXEL_FORMAT_RGB32 = 13,  // 32bpp BGRA, 1 plane.
  39   PIXEL_FORMAT_MJPEG = 14,  // MJPEG compressed.
  40   // MediaTek proprietary format. MT21 is similar to NV21 except the memory
  41   // layout and pixel layout (swizzles). 12bpp with Y plane followed by a 2x2
  42   // interleaved VU plane. Each image contains two buffers -- Y plane and VU
  43   // plane. Two planes can be non-contiguous in memory. The starting addresses
  44   // of Y plane and VU plane are 4KB alignment.
  45   // Suppose image dimension is (width, height). For both Y plane and VU plane:
  46   // Row pitch = ((width+15)/16) * 16.
  47   // Plane size = Row pitch * (((height+31)/32)*32)
  48   PIXEL_FORMAT_MT21 = 15,
  49   // Please update UMA histogram enumeration when adding new formats here.
  50   PIXEL_FORMAT_MAX =
  51       PIXEL_FORMAT_MT21,    // Must always be equal to largest entry logged.
  52 };
  53
  54 // Color space or color range used for the pixels.
  55 // Logged to UMA, so never reuse values. Leave gaps if necessary.
  56 enum ColorSpace {
  57   COLOR_SPACE_UNSPECIFIED = 0,  // In general this is Rec601.
  58   // The JPEG color space is the combination of Rec.601 and full range colors
  59   // (aka pc range colors).
  60   COLOR_SPACE_JPEG = 1,
  61   COLOR_SPACE_HD_REC709 = 2,  // Rec709 "HD" color space.
  62   COLOR_SPACE_SD_REC601 = 3,  // Rec601 "SD" color space.
  63   COLOR_SPACE_MAX = COLOR_SPACE_SD_REC601,
  64 };
  65
  66 // Returns the name of a Format as a string.
  67 MEDIA_EXPORT std::string VideoPixelFormatToString(VideoPixelFormat format);
  68
  69 // Returns true if |format| is a YUV format with multiple planes.
  70 MEDIA_EXPORT bool IsYuvPlanar(VideoPixelFormat format);
  71
  72 }  // namespace media
  73
  74 #endif  // MEDIA_BASE_VIDEO_TYPES_H_