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

media/base/video_color_space.cc

+// 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.
+
+#include "media/base/video_color_space.h"
+
+namespace media {
+
+VideoColorSpace::PrimaryID VideoColorSpace::GetPrimaryID(int primary) {
+  if (primary < 1 || primary > 22 || primary == 3)
+    return PrimaryID::INVALID;
+  if (primary > 12 && primary < 22)
+    return PrimaryID::INVALID;
+  return static_cast<PrimaryID>(primary);
+}
+
+VideoColorSpace::TransferID VideoColorSpace::GetTransferID(int transfer) {
+  if (transfer < 1 || transfer > 18 || transfer == 3)
+    return TransferID::INVALID;
+  return static_cast<TransferID>(transfer);
+}
+
+VideoColorSpace::MatrixID VideoColorSpace::GetMatrixID(int matrix) {
+  if (matrix < 0 || matrix > 11 || matrix == 3)
+    return MatrixID::INVALID;
+  return static_cast<MatrixID>(matrix);
+}
+
+VideoColorSpace::VideoColorSpace() {}
+
+VideoColorSpace::VideoColorSpace(PrimaryID primaries,
+                                 TransferID transfer,
+                                 MatrixID matrix,
+                                 gfx::ColorSpace::RangeID range)
+    : primaries(primaries), transfer(transfer), matrix(matrix), range(range) {}
+
+VideoColorSpace::VideoColorSpace(int primaries,
+                                 int transfer,
+                                 int matrix,
+                                 gfx::ColorSpace::RangeID range)
+    : primaries(GetPrimaryID(primaries)),
+      transfer(GetTransferID(transfer)),
+      matrix(GetMatrixID(matrix)),
+      range(range) {}
+
+gfx::ColorSpace VideoColorSpace::ToGfxColorSpace() const {
+  // TODO(hubbe): Make this type-safe.
+  return gfx::ColorSpace::CreateVideo(static_cast<int>(primaries),
+                                      static_cast<int>(transfer),
+                                      static_cast<int>(matrix), range);
+}
+
+VideoColorSpace VideoColorSpace::BT709() {
+  return VideoColorSpace(PrimaryID::BT709, TransferID::BT709, MatrixID::BT709,
+                         gfx::ColorSpace::RangeID::LIMITED);
+}
+
+}  // namespace