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1 /* | 1 /* |
2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_HEADER_EXTENSIONS_H_ | 10 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_HEADER_EXTENSIONS_H_ |
11 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_HEADER_EXTENSIONS_H_ | 11 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_HEADER_EXTENSIONS_H_ |
12 | 12 |
13 #include "webrtc/base/basictypes.h" | 13 #include "webrtc/base/basictypes.h" |
14 #include "webrtc/common_video/rotation.h" | 14 #include "webrtc/common_video/rotation.h" |
15 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h" | 15 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h" |
16 | 16 |
17 namespace webrtc { | 17 namespace webrtc { |
18 | 18 |
19 class AbsoluteSendTime { | 19 class AbsoluteSendTime { |
20 public: | 20 public: |
21 static constexpr RTPExtensionType kId = kRtpExtensionAbsoluteSendTime; | 21 static constexpr RTPExtensionType kId = kRtpExtensionAbsoluteSendTime; |
22 static constexpr uint8_t kValueSizeBytes = 3; | 22 static constexpr uint8_t kValueSizeBytes = 3; |
23 static constexpr const char* kUri = | 23 static const char* const kUri; |
24 "http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time"; | |
25 | 24 |
26 static bool Parse(const uint8_t* data, uint32_t* time_24bits); | 25 static bool Parse(const uint8_t* data, uint32_t* time_24bits); |
27 static bool Write(uint8_t* data, int64_t time_ms); | 26 static bool Write(uint8_t* data, int64_t time_ms); |
28 | 27 |
29 static constexpr uint32_t MsTo24Bits(int64_t time_ms) { | 28 static constexpr uint32_t MsTo24Bits(int64_t time_ms) { |
30 return static_cast<uint32_t>(((time_ms << 18) + 500) / 1000) & 0x00FFFFFF; | 29 return static_cast<uint32_t>(((time_ms << 18) + 500) / 1000) & 0x00FFFFFF; |
31 } | 30 } |
32 }; | 31 }; |
33 | 32 |
34 class AudioLevel { | 33 class AudioLevel { |
35 public: | 34 public: |
36 static constexpr RTPExtensionType kId = kRtpExtensionAudioLevel; | 35 static constexpr RTPExtensionType kId = kRtpExtensionAudioLevel; |
37 static constexpr uint8_t kValueSizeBytes = 1; | 36 static constexpr uint8_t kValueSizeBytes = 1; |
38 static constexpr const char* kUri = | 37 static const char* const kUri; |
39 "urn:ietf:params:rtp-hdrext:ssrc-audio-level"; | |
40 | 38 |
41 static bool Parse(const uint8_t* data, | 39 static bool Parse(const uint8_t* data, |
42 bool* voice_activity, | 40 bool* voice_activity, |
43 uint8_t* audio_level); | 41 uint8_t* audio_level); |
44 static bool Write(uint8_t* data, bool voice_activity, uint8_t audio_level); | 42 static bool Write(uint8_t* data, bool voice_activity, uint8_t audio_level); |
45 }; | 43 }; |
46 | 44 |
47 class TransmissionOffset { | 45 class TransmissionOffset { |
48 public: | 46 public: |
49 static constexpr RTPExtensionType kId = kRtpExtensionTransmissionTimeOffset; | 47 static constexpr RTPExtensionType kId = kRtpExtensionTransmissionTimeOffset; |
50 static constexpr uint8_t kValueSizeBytes = 3; | 48 static constexpr uint8_t kValueSizeBytes = 3; |
51 static constexpr const char* kUri = "urn:ietf:params:rtp-hdrext:toffset"; | 49 static const char* const kUri; |
52 | 50 |
53 static bool Parse(const uint8_t* data, int32_t* rtp_time); | 51 static bool Parse(const uint8_t* data, int32_t* rtp_time); |
54 static bool Write(uint8_t* data, int32_t rtp_time); | 52 static bool Write(uint8_t* data, int32_t rtp_time); |
55 }; | 53 }; |
56 | 54 |
57 class TransportSequenceNumber { | 55 class TransportSequenceNumber { |
58 public: | 56 public: |
59 static constexpr RTPExtensionType kId = kRtpExtensionTransportSequenceNumber; | 57 static constexpr RTPExtensionType kId = kRtpExtensionTransportSequenceNumber; |
60 static constexpr uint8_t kValueSizeBytes = 2; | 58 static constexpr uint8_t kValueSizeBytes = 2; |
61 static constexpr const char* kUri = | 59 static const char* const kUri; |
62 "http://www.ietf.org/id/" | 60 |
63 "draft-holmer-rmcat-transport-wide-cc-extensions-01"; | |
64 static bool Parse(const uint8_t* data, uint16_t* value); | 61 static bool Parse(const uint8_t* data, uint16_t* value); |
65 static bool Write(uint8_t* data, uint16_t value); | 62 static bool Write(uint8_t* data, uint16_t value); |
66 }; | 63 }; |
67 | 64 |
68 class VideoOrientation { | 65 class VideoOrientation { |
69 public: | 66 public: |
70 static constexpr RTPExtensionType kId = kRtpExtensionVideoRotation; | 67 static constexpr RTPExtensionType kId = kRtpExtensionVideoRotation; |
71 static constexpr uint8_t kValueSizeBytes = 1; | 68 static constexpr uint8_t kValueSizeBytes = 1; |
72 static constexpr const char* kUri = "urn:3gpp:video-orientation"; | 69 static const char* const kUri; |
73 | 70 |
74 static bool Parse(const uint8_t* data, VideoRotation* value); | 71 static bool Parse(const uint8_t* data, VideoRotation* value); |
75 static bool Write(uint8_t* data, VideoRotation value); | 72 static bool Write(uint8_t* data, VideoRotation value); |
76 static bool Parse(const uint8_t* data, uint8_t* value); | 73 static bool Parse(const uint8_t* data, uint8_t* value); |
77 static bool Write(uint8_t* data, uint8_t value); | 74 static bool Write(uint8_t* data, uint8_t value); |
78 }; | 75 }; |
79 | 76 |
80 class PlayoutDelayLimits { | 77 class PlayoutDelayLimits { |
81 public: | 78 public: |
82 static constexpr RTPExtensionType kId = kRtpExtensionPlayoutDelay; | 79 static constexpr RTPExtensionType kId = kRtpExtensionPlayoutDelay; |
83 static constexpr uint8_t kValueSizeBytes = 3; | 80 static constexpr uint8_t kValueSizeBytes = 3; |
84 static constexpr const char* kUri = | 81 static const char* const kUri; |
85 "http://www.webrtc.org/experiments/rtp-hdrext/playout-delay"; | |
86 | 82 |
87 // Playout delay in milliseconds. A playout delay limit (min or max) | 83 // Playout delay in milliseconds. A playout delay limit (min or max) |
88 // has 12 bits allocated. This allows a range of 0-4095 values which | 84 // has 12 bits allocated. This allows a range of 0-4095 values which |
89 // translates to a range of 0-40950 in milliseconds. | 85 // translates to a range of 0-40950 in milliseconds. |
90 static constexpr int kGranularityMs = 10; | 86 static constexpr int kGranularityMs = 10; |
91 // Maximum playout delay value in milliseconds. | 87 // Maximum playout delay value in milliseconds. |
92 static constexpr int kMaxMs = 0xfff * kGranularityMs; // 40950. | 88 static constexpr int kMaxMs = 0xfff * kGranularityMs; // 40950. |
93 | 89 |
94 static bool Parse(const uint8_t* data, PlayoutDelay* playout_delay); | 90 static bool Parse(const uint8_t* data, PlayoutDelay* playout_delay); |
95 static bool Write(uint8_t* data, const PlayoutDelay& playout_delay); | 91 static bool Write(uint8_t* data, const PlayoutDelay& playout_delay); |
96 }; | 92 }; |
97 | 93 |
98 } // namespace webrtc | 94 } // namespace webrtc |
99 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_HEADER_EXTENSIONS_H_ | 95 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_HEADER_EXTENSIONS_H_ |
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