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| -rw-r--r-- | third_party/libwebrtc/api/video/color_space.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/video/color_space.h b/third_party/libwebrtc/api/video/color_space.h new file mode 100644 index 0000000000..a7ad86b016 --- /dev/null +++ b/third_party/libwebrtc/api/video/color_space.h @@ -0,0 +1,178 @@ +/* + * Copyright (c) 2018 The WebRTC 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. + */ + +#ifndef API_VIDEO_COLOR_SPACE_H_ +#define API_VIDEO_COLOR_SPACE_H_ + +#include <stdint.h> + +#include "absl/types/optional.h" +#include "api/video/hdr_metadata.h" +#include "rtc_base/system/rtc_export.h" + +namespace webrtc { + +// This class represents color information as specified in T-REC H.273, +// available from https://www.itu.int/rec/T-REC-H.273. +// +// WebRTC's supported codecs: +// - VP9 supports color profiles, see VP9 Bitstream & Decoding Process +// Specification Version 0.6 Section 7.2.2 "Color config semantics" available +// from https://www.webmproject.org. +// - VP8 only supports BT.601, see +// https://tools.ietf.org/html/rfc6386#section-9.2 +// - H264 uses the exact same representation as T-REC H.273. See T-REC-H.264 +// E.2.1, "VUI parameters semantics", available from +// https://www.itu.int/rec/T-REC-H.264. + +class RTC_EXPORT ColorSpace { + public: + enum class PrimaryID : uint8_t { + // The indices are equal to the values specified in T-REC H.273 Table 2. + kBT709 = 1, + kUnspecified = 2, + kBT470M = 4, + kBT470BG = 5, + kSMPTE170M = 6, // Identical to BT601 + kSMPTE240M = 7, + kFILM = 8, + kBT2020 = 9, + kSMPTEST428 = 10, + kSMPTEST431 = 11, + kSMPTEST432 = 12, + kJEDECP22 = 22, // Identical to EBU3213-E + // When adding/removing entries here, please make sure to do the + // corresponding change to kPrimaryIds. + }; + + enum class TransferID : uint8_t { + // The indices are equal to the values specified in T-REC H.273 Table 3. + kBT709 = 1, + kUnspecified = 2, + kGAMMA22 = 4, + kGAMMA28 = 5, + kSMPTE170M = 6, + kSMPTE240M = 7, + kLINEAR = 8, + kLOG = 9, + kLOG_SQRT = 10, + kIEC61966_2_4 = 11, + kBT1361_ECG = 12, + kIEC61966_2_1 = 13, + kBT2020_10 = 14, + kBT2020_12 = 15, + kSMPTEST2084 = 16, + kSMPTEST428 = 17, + kARIB_STD_B67 = 18, + // When adding/removing entries here, please make sure to do the + // corresponding change to kTransferIds. + }; + + enum class MatrixID : uint8_t { + // The indices are equal to the values specified in T-REC H.273 Table 4. + kRGB = 0, + kBT709 = 1, + kUnspecified = 2, + kFCC = 4, + kBT470BG = 5, + kSMPTE170M = 6, + kSMPTE240M = 7, + kYCOCG = 8, + kBT2020_NCL = 9, + kBT2020_CL = 10, + kSMPTE2085 = 11, + kCDNCLS = 12, + kCDCLS = 13, + kBT2100_ICTCP = 14, + // When adding/removing entries here, please make sure to do the + // corresponding change to kMatrixIds. + }; + + enum class RangeID { + // The indices are equal to the values specified at + // https://www.webmproject.org/docs/container/#colour for the element Range. + kInvalid = 0, + // Limited Rec. 709 color range with RGB values ranging from 16 to 235. + kLimited = 1, + // Full RGB color range with RGB valees from 0 to 255. + kFull = 2, + // Range is defined by MatrixCoefficients/TransferCharacteristics. + kDerived = 3, + // When adding/removing entries here, please make sure to do the + // corresponding change to kRangeIds. + }; + + enum class ChromaSiting { + // Chroma siting specifies how chroma is subsampled relative to the luma + // samples in a YUV video frame. + // The indices are equal to the values specified at + // https://www.webmproject.org/docs/container/#colour for the element + // ChromaSitingVert and ChromaSitingHorz. + kUnspecified = 0, + kCollocated = 1, + kHalf = 2, + // When adding/removing entries here, please make sure to do the + // corresponding change to kChromaSitings. + }; + + ColorSpace(); + ColorSpace(const ColorSpace& other); + ColorSpace(ColorSpace&& other); + ColorSpace& operator=(const ColorSpace& other); + ColorSpace(PrimaryID primaries, + TransferID transfer, + MatrixID matrix, + RangeID range); + ColorSpace(PrimaryID primaries, + TransferID transfer, + MatrixID matrix, + RangeID range, + ChromaSiting chroma_siting_horizontal, + ChromaSiting chroma_siting_vertical, + const HdrMetadata* hdr_metadata); + friend bool operator==(const ColorSpace& lhs, const ColorSpace& rhs) { + return lhs.primaries_ == rhs.primaries_ && lhs.transfer_ == rhs.transfer_ && + lhs.matrix_ == rhs.matrix_ && lhs.range_ == rhs.range_ && + lhs.chroma_siting_horizontal_ == rhs.chroma_siting_horizontal_ && + lhs.chroma_siting_vertical_ == rhs.chroma_siting_vertical_ && + lhs.hdr_metadata_ == rhs.hdr_metadata_; + } + friend bool operator!=(const ColorSpace& lhs, const ColorSpace& rhs) { + return !(lhs == rhs); + } + + PrimaryID primaries() const; + TransferID transfer() const; + MatrixID matrix() const; + RangeID range() const; + ChromaSiting chroma_siting_horizontal() const; + ChromaSiting chroma_siting_vertical() const; + const HdrMetadata* hdr_metadata() const; + + bool set_primaries_from_uint8(uint8_t enum_value); + bool set_transfer_from_uint8(uint8_t enum_value); + bool set_matrix_from_uint8(uint8_t enum_value); + bool set_range_from_uint8(uint8_t enum_value); + bool set_chroma_siting_horizontal_from_uint8(uint8_t enum_value); + bool set_chroma_siting_vertical_from_uint8(uint8_t enum_value); + void set_hdr_metadata(const HdrMetadata* hdr_metadata); + + private: + PrimaryID primaries_ = PrimaryID::kUnspecified; + TransferID transfer_ = TransferID::kUnspecified; + MatrixID matrix_ = MatrixID::kUnspecified; + RangeID range_ = RangeID::kInvalid; + ChromaSiting chroma_siting_horizontal_ = ChromaSiting::kUnspecified; + ChromaSiting chroma_siting_vertical_ = ChromaSiting::kUnspecified; + absl::optional<HdrMetadata> hdr_metadata_; +}; + +} // namespace webrtc +#endif // API_VIDEO_COLOR_SPACE_H_ |