Gate support for certain EOTFs/primaries/matrices on color management / hdr flags

media/base/video_color_space.h

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MEDIA_BASE_VIDEO_COLOR_SPACE_H_
+#define MEDIA_BASE_VIDEO_COLOR_SPACE_H_
+
+#include "media/base/media_export.h"
+#include "ui/gfx/color_space.h"
+
+namespace media {
+
+// Described in ISO 23001-8:2016
+class MEDIA_EXPORT VideoColorSpace {
+ public:
+  // Table 2
+  enum class PrimaryID : uint8_t {
+    INVALID = 0,
+    BT709 = 1,
+    UNSPECIFIED = 2,
+    BT470M = 4,
+    BT470BG = 5,
+    SMPTE170M = 6,
+    SMPTE240M = 7,
+    FILM = 8,
+    BT2020 = 9,
+    SMPTEST428_1 = 10,
+    SMPTEST431_2 = 11,
+    SMPTEST432_1 = 12,
+    EBU_3213_E = 22
+  };
+
+  // Table 3
+  enum class TransferID : uint8_t {
+    INVALID = 0,
+    BT709 = 1,
+    UNSPECIFIED = 2,
+    GAMMA22 = 4,
+    GAMMA28 = 5,
+    SMPTE170M = 6,
+    SMPTE240M = 7,
+    LINEAR = 8,
+    LOG = 9,
+    LOG_SQRT = 10,
+    IEC61966_2_4 = 11,
+    BT1361_ECG = 12,
+    IEC61966_2_1 = 13,
+    BT2020_10 = 14,
+    BT2020_12 = 15,
+    SMPTEST2084 = 16,
+    SMPTEST428_1 = 17,
+
+    // Not yet standardized
+    ARIB_STD_B67 = 18,  // AKA hybrid-log gamma, HLG.
+  };
+
+  // Table 4
+  enum class MatrixID : uint8_t {
+    RGB = 0,
+    BT709 = 1,
+    UNSPECIFIED = 2,
+    FCC = 4,
+    BT470BG = 5,
+    SMPTE170M = 6,
+    SMPTE240M = 7,
+    YCOCG = 8,
+    BT2020_NCL = 9,
+    BT2020_CL = 10,
+    YDZDX = 11,
+    INVALID = 255,
+  };
+
+  VideoColorSpace();
+  VideoColorSpace(int primaries,
+                  int transfer,
+                  int matrix,
+                  gfx::ColorSpace::RangeID range);
+  VideoColorSpace(PrimaryID primaries,
+                  TransferID transfer,
+                  MatrixID matrix,
+                  gfx::ColorSpace::RangeID range);
+
+  // These will return INVALID if the number you give it
+  // is not a valid enum value.
+  static PrimaryID GetPrimaryID(int primary);
+  static TransferID GetTransferID(int transfer);
+  static MatrixID GetMatrixID(int matrix);
+
+  static VideoColorSpace BT709();
+
+  gfx::ColorSpace ToGfxColorSpace() const;
+
+  // Note, these are public variables.
+  PrimaryID primaries = PrimaryID::INVALID;
+  TransferID transfer = TransferID::INVALID;
+  MatrixID matrix = MatrixID::INVALID;
+  gfx::ColorSpace::RangeID range = gfx::ColorSpace::RangeID::INVALID;
+};
+
+}  // namespace media
+
+#endif