1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
// 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:
// These values are persisted to logs. Entries should not be renumbered or
// removed and numeric values should never be reused.
// Please keep in sync with "VideoColorSpace.PrimaryID"
// in src/tools/metrics/histograms/enums.xml.
// 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,
kMaxValue = EBU_3213_E,
};
// These values are persisted to logs. Entries should not be renumbered or
// removed and numeric values should never be reused.
// Please keep in sync with "VideoColorSpace.TransferID"
// in src/tools/metrics/histograms/enums.xml.
// 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.
kMaxValue = ARIB_STD_B67,
};
// 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,
kMaxValue = INVALID,
};
VideoColorSpace();
VideoColorSpace(int primaries,
int transfer,
int matrix,
gfx::ColorSpace::RangeID range);
VideoColorSpace(PrimaryID primaries,
TransferID transfer,
MatrixID matrix,
gfx::ColorSpace::RangeID range);
bool operator==(const VideoColorSpace& other) const;
bool operator!=(const VideoColorSpace& other) const;
// Returns true if any of the fields have a value other
// than INVALID or UNSPECIFIED.
bool IsSpecified() const;
// 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 REC709();
static VideoColorSpace REC601();
static VideoColorSpace JPEG();
gfx::ColorSpace ToGfxColorSpace() const;
static VideoColorSpace FromGfxColorSpace(const gfx::ColorSpace& color_space);
// 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 // MEDIA_BASE_VIDEO_COLOR_SPACE_H_
|
