Wi-Fi_Display_Technical_Specification_v2.1_0.pdf

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【核心代码】

Table of contents
1 INTRODUCTION ........................................................................................................................................................ 11
1.1 Scope .......................................................................................................................................................... 11
1.2 References.................................................................................................................................................. 11
2 DEFINITIONS AND ACRONYMS .............................................................................................................................. 15
2.1.1 Shall/should/may/might word usage .............................................................................................. 15
2.1.2 Definitions ...................................................................................................................................... 15
2.1.3 Abbreviations and acronyms.......................................................................................................... 16
3 WFD ARCHITECTURE AND REQUIREMENTS........................................................................................................ 20
3.1 WFD Source, Primary Sink, Secondary Sink and WFD Session................................................................20
3.1.1 WFD Source................................................................................................................................... 21
3.1.2 WFD Sink(s)................................................................................................................................... 21
3.1.3 Requirements for WFD Devices under Coupled Sink Operation...................................................23
3.1.4 WFD Session ................................................................................................................................. 23
3.2 WFD Connection Topology......................................................................................................................... 24
3.2.1 Wi-Fi P2P....................................................................................................................................... 24
3.2.2 TDLS.............................................................................................................................................. 25
3.2.3 Wi-Fi Infrastructure......................................................................................................................... 25
3.3 Functions and services ............................................................................................................................... 25
3.3.1 Basic Wi-Fi functions and services ................................................................................................ 25
3.3.2 Wi-Fi Display specific functions and services ................................................................................ 26
3.4 Encoder/decoder characteristics................................................................................................................. 27
3.4.1 Audio .............................................................................................................................................. 27
3.4.2 Video and Image Codecs............................................................................................................... 29
3.4.3 Stereoscopic 3D video ................................................................................................................... 34
4 WFD SESSION FUNCTIONAL DESCRIPTION AND PROCEDURES...................................................................... 35
4.1 Reference Model......................................................................................................................................... 35
4.2 WFD connection setup, WFD session establishment and management functions ....................................36
4.3 WFD R1 Discovery...................................................................................................................................... 37
4.3.1 WFD R1 Service Discovery ........................................................................................................... 37
4.3.2 WFD R1 Device Discovery ............................................................................................................ 37
4.4 WFD R2 Discovery...................................................................................................................................... 38
4.4.1 WFD R2 Service Discovery ........................................................................................................... 38
4.4.2 WFD R2 Device Discovery ............................................................................................................ 39
4.5 WFD Connection Setup .............................................................................................................................. 40
4.5.1 Connectivity Scheme Resolution ................................................................................................... 40
4.5.2 Establishing a WFD Connection using Wi-Fi P2P ......................................................................... 41
4.5.3 Establish a WFD Connection using TDLS ..................................................................................... 43
4.5.4 Establishing a TCP connection ...................................................................................................... 43
4.6 WFD Capability Negotiation........................................................................................................................ 44
4.7 Link content protection setup ...................................................................................................................... 45
4.8 WFD session establishment ....................................................................................................................... 47
4.8.1 WFD Session between WFD R2 devices over a BSS infrastructure connection ..........................49
4.8.2 WFD Session between a WFD R2 Device and a WFD R1 Device ...............................................51
4.9 Coupled Sink Operation.............................................................................................................................. 51
4.9.1 Primary and Secondary Sink Coupling .......................................................................................... 52
4.9.2 WFD Device Discovery .................................................................................................................. 54
4.9.3 WFD Service Discovery ................................................................................................................. 54
4.9.4 WFD Device Pairing....................................................................................................................... 54
4.9.5 WFD capability negotiation ............................................................................................................ 55
4.9.6 WFD Session establishment.......................................................................................................... 55
4.10 AV streaming and control............................................................................................................................ 55
4.10.1 Time synchronization .................................................................................................................... 55
4.10.2 AV streaming................................................................................................................................. 56
4.10.3 AV Encoding Rate Control ............................................................................................................ 58
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Used with the permission of Wi-Fi Alliance under the terms as stated in this document.
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4.10.4 AV Session Control....................................................................................................................... 60
4.10.5 WFD video recovery...................................................................................................................... 60
4.10.6 Switching of Transport Protocol in a WFDS Session.................................................................... 60
4.11 User Input Back Channel ............................................................................................................................ 63
4.11.1 UIBC Data Encapsulation ............................................................................................................. 64
4.11.2 UIBC Establishment and Maintenance ......................................................................................... 65
4.11.3 UIBC Input Body ........................................................................................................................... 66
4.12 WFD Session and WFD Connection Termination ...................................................................................... 70
4.12.1 Termination of a WFD Connection Using Wi-Fi P2P.................................................................... 70
4.12.2 Termination of a WFD Connection Using TDLS........................................................................... 70
4.12.3 Termination of WFD connection Using BSS infrastructure...........................................................70
4.13 Persistent WFD Groups .............................................................................................................................. 70
4.13.1 Persistent WFD Group over Wi-Fi P2P......................................................................................... 71
4.13.2 Persistent WFD Group over TDLS................................................................................................ 71
4.14 WFD MAC Procedures -- Concurrency....................................................................................................... 71
4.14.1 Concurrent WLAN access with Wi-Fi P2P.................................................................................... 71
4.14.2 Concurrent WLAN access with TDLS........................................................................................... 71
4.15 WFD Standby.............................................................................................................................................. 71
4.16 Direct Streaming and Transport of Auxiliary Streams................................................................................. 73
4.16.1 Overview ....................................................................................................................................... 74
4.16.2 Capability Negotiation and Session Setup.................................................................................... 74
4.16.3 AV Streaming Switch .................................................................................................................... 76
4.16.4 Auxiliary Stream over MPEG2-TS ................................................................................................ 78
4.17 Backward Compatibility............................................................................................................................... 78
4.17.1 Device/Service Discovery ............................................................................................................. 78
4.17.2 WFD Connection Establishment................................................................................................... 79
4.17.3 WFD Capability Negotiation.......................................................................................................... 79
4.17.4 WFD Session Establishment ........................................................................................................ 79
5 FRAME FORMATS AND SERVICE DISCOVERY INFORMATION .......................................................................... 80
5.1 WFD Information Element........................................................................................................................... 80
5.1.1 WFD IE Format .............................................................................................................................. 80
5.1.2 WFD Device Information Subelement............................................................................................ 81
5.1.3 Associated BSSID Subelement ..................................................................................................... 83
5.1.4 Coupled Sink Information Subelement .......................................................................................... 83
5.1.5 WFD Video Formats Subelement .................................................................................................. 83
5.1.6 WFD 3D Video Formats Subelement............................................................................................. 89
5.1.7 WFD Audio Formats Subelement .................................................................................................. 89
5.1.8 WFD Extended Capability Subelement.......................................................................................... 91
5.1.9 Local IP Address Subelement........................................................................................................ 92
5.1.10 WFD Session Information Subelement......................................................................................... 92
5.1.11 Alternative MAC Address Subelement.......................................................................................... 93
5.1.12 WFD R2 Device Information Subelement..................................................................................... 94
5.2 Management Frames.................................................................................................................................. 94
5.2.1 Beacon Frame Format ................................................................................................................... 95
5.2.2 Probe Request Frame Format ....................................................................................................... 95
5.2.3 Probe Response Frame................................................................................................................. 96
5.2.4 Association/Reassociation Request Frame ................................................................................... 96
5.2.5 Association/Reassociation Response Frame ................................................................................ 97
5.2.6 P2P Public Action Frames ............................................................................................................. 97
5.2.7 Service Discovery Action Frames ................................................................................................ 101
5.3 WFD R2 Command................................................................................................................................... 101
5.4 WFD R2 Service Discovery Information ................................................................................................... 101
5.4.1 WFD R2 Video Formats............................................................................................................... 102
5.4.2 WFD R2 Aux Stream Formats ..................................................................................................... 109
5.4.3 WFD R2 Audio Formats............................................................................................................... 110
5.4.4 WFD R2 Extended Capabilities bitmap........................................................................................ 113
5.5 TXT Record............................................................................................................................................... 114
Wi-Fi Display Technical Specification v2.1
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Used with the permission of Wi-Fi Alliance under the terms as stated in this document.
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6 RTSP BASED WFD CONTROL PLANE .................................................................................................................. 116
6.1 RTSP data structures................................................................................................................................ 116
6.1.1 ABNF Definitions.......................................................................................................................... 116
6.1.2 wfd-audio-codecs ......................................................................................................................... 116
6.1.3 wfd-video-formats......................................................................................................................... 117
6.1.4 wfd-3d-formats ............................................................................................................................. 118
6.1.5 wfd-content-protection ................................................................................................................. 118
6.1.6 wfd-display-edid ........................................................................................................................... 118
6.1.7 wfd-coupled-sink .......................................................................................................................... 120
6.1.8 wfd-trigger-method....................................................................................................................... 120
6.1.9 wfd-presentation-url ..................................................................................................................... 120
6.1.10 wfd-client-rtp-ports ...................................................................................................................... 121
6.1.11 wfd-route ..................................................................................................................................... 122
6.1.12 wfd-I2C........................................................................................................................................ 122
6.1.13 wfd-av-format-change-timing ...................................................................................................... 122
6.1.14 wfd-preferred-display-mode ........................................................................................................ 123
6.1.15 wfd-uibc-capability....................................................................................................................... 123
6.1.16 wfd-uibc-setting........................................................................................................................... 123
6.1.17 wfd-standby-resume-capability ................................................................................................... 123
6.1.18 wfd-standby................................................................................................................................. 124
6.1.19 wfd-connector-type...................................................................................................................... 124
6.1.20 wfd-idr-request ............................................................................................................................ 125
6.1.21 wfd2-audio-codecs ...................................................................................................................... 125
6.1.22 wfd2-video-formats...................................................................................................................... 125
6.1.23 wfd2-aux-stream-formats ............................................................................................................ 126
6.1.24 wfd2-direct-streaming-mode ....................................................................................................... 127
6.1.25 wfd2-transport-switch.................................................................................................................. 127
6.1.26 wfd2-buffer-length ....................................................................................................................... 127
6.1.27 wfd2-audio-playback-status ........................................................................................................ 128
6.1.28 wfd2-video-playback-status ........................................................................................................ 128
6.1.29 wfd2-cta-datablock-collection...................................................................................................... 129
6.1.30 wfd2-cta-audio-infoframe ............................................................................................................ 131
6.2 WFD RTSP methods................................................................................................................................. 131
6.2.1 WFD RTSP OPTIONS................................................................................................................. 131
6.2.2 GET_PARAMETER ..................................................................................................................... 133
6.2.3 SET_PARAMETER...................................................................................................................... 133
6.2.4 SETUP ......................................................................................................................................... 134
6.2.5 PLAY............................................................................................................................................ 134
6.2.6 PAUSE......................................................................................................................................... 135
6.2.7 TEARDOWN ................................................................................................................................ 135
6.3 RTSP Parameters ..................................................................................................................................... 135
6.4 RTSP Messages ....................................................................................................................................... 137
6.4.1 RTSP M1 Message...................................................................................................................... 139
6.4.2 RTSP M2 Message...................................................................................................................... 139
6.4.3 RTSP M3 Message...................................................................................................................... 140
6.4.4 RTSP M4 Message...................................................................................................................... 140
6.4.5 RTSP M5 Message...................................................................................................................... 142
6.4.6 RTSP M6 Message...................................................................................................................... 143
6.4.7 RTSP M7 Message...................................................................................................................... 143
6.4.8 RTSP M8 Message...................................................................................................................... 144
6.4.9 RTSP M9 Message...................................................................................................................... 144
6.4.10 RTSP M10 Message................................................................................................................... 145
6.4.11 RTSP M11 Message................................................................................................................... 145
6.4.12 RTSP M12 Message................................................................................................................... 145
6.4.13 RTSP M13 Message................................................................................................................... 145
6.4.14 RTSP M14 Message................................................................................................................... 146
6.4.15 RTSP M15 Message................................................................................................................... 146
6.4.16 RTSP M16 Message................................................................................................................... 147
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Used with the permission of Wi-Fi Alliance under the terms as stated in this document.
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6.5 RTSP Timeout........................................................................................................................................... 147
6.5.1 WFD keep-alive............................................................................................................................ 147
6.5.2 Timeout before RTSP Procedure................................................................................................. 148
6.6 RTSP Syntax remark ................................................................................................................................ 148
6.6.1 CSeq ............................................................................................................................................ 148
6.6.2 Delimiter for parameters .............................................................................................................. 148
6.6.3 Message header .......................................................................................................................... 149
6.6.4 Content-Encoding ........................................................................................................................ 149
6.6.5 Case Sensitivity............................................................................................................................ 149
6.6.6 Content-Length and Content-Type .............................................................................................. 149
7 REMOTE I2C READ/WRITE MESSAGING TRANSACTION .................................................................................. 150
7.1 Remote_I2C_Read_Request.................................................................................................................... 151
7.2 Remote_I2C_Write_Request .................................................................................................................... 151
7.3 Remote_I2C_Read_Reply_Ack ................................................................................................................ 152
7.4 Remote_I2C_Read_Reply_Nak................................................................................................................ 152
7.5 Remote_I2C_Write_Reply_Ack ................................................................................................................ 152
7.6 Remote_I2C_Write_Reply_Nak................................................................................................................ 153
8 PREFERRED DISPLAY MODE ............................................................................................................................... 154
APPENDIX A MPEG SYSTEM LAYER (INFORMATIVE)............................................................................................... 155
APPENDIX B MPEG-TS PARAMETERS FOR AUDIO, VIDEO AND AUXILIARY ELEMENTARY STREAMS
(NORMATIVE) 156
B.1 Encapsulation of MPEG2-TS into RTP Packets ....................................................................................... 163
B.2 PES Structure and Blending Operation for Auxiliary Streams.................................................................. 164
B.2.1 Blending Operation ...................................................................................................................... 167
B.2.2 Carriage of JPEG Image over MPEG2-TS Transport Stream .....................................................169
B.2.3 Carriage of PNG Image over MPEG2-TS Transport Stream.......................................................170
B.3 WFD R2 LPCM Formats and Packet Structures ...................................................................................... 172
B.3.1 PES Structure for LPCM Streams................................................................................................ 172
B.3.2 Speaker Location Names used for Multichannel Audio Streaming .............................................175
B.3.3 Multi-channel Audio Formats Information .................................................................................... 177
B.4 DTS-HD Audio Bitstream Constraints....................................................................................................... 177
B.4.1 DTS-HD MPEG-TS Parameters and Requirements....................................................................177
B.4.2 DTS-HD Elementary Stream Encapsulation................................................................................ 178
APPENDIX C RECOMMENDATIONS FOR SATISFYING THE HDCP 2.X LOCALITY CHECK (INFORMATIVE) .......179
APPENDIX D H.264 AND H.222 USAGE DETAIL (NORMATIVE)................................................................................. 180
D.1 Slice Usage ............................................................................................................................................... 180
D.1.1 Multiple Slices in a Picture ........................................................................................................... 180
D.2 Frame Packing Arrangement SEI ............................................................................................................. 180
D.3 SEI and VUI .............................................................................................................................................. 182
D.4 H.222 usage.............................................................................................................................................. 182
D.4.1 PTS/DTS for video stream ........................................................................................................... 182
D.4.2 PAT/PMT...................................................................................................................................... 182
D.4.3 Program and program element descriptors in PMT..................................................................... 183
APPENDIX E RTSP MESSAGE EXAMPLES (INFORMATIVE)..................................................................................... 185
E.1 From RTSP M1 to M7 without errors ........................................................................................................ 185
E.2 RTSP M4 with error case.......................................................................................................................... 186
E.3 Example RTSP Messages for TCP Mode................................................................................................. 187
APPENDIX F HDCP 2.X NOTATION MAPPING TO WFD DEVICE HDCP IMPLEMENTATION REVISION................191
APPENDIX G CTA AUDIO EXAMPLE (INFORMATIVE) ................................................................................................ 192
Wi-Fi Display Technical Specification v2.1
© 2017 Wi-Fi Alliance. All Rights Reserved.
Used with the permission of Wi-Fi Alliance under the terms as stated in this document.
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List of tables
Table 1. Definitions ............................................................................................................................................... 15
Table 2. Abbreviations and acronyms................................................................................................................... 16
Table 3. Functions and services ........................................................................................................................... 26
Table 4. Optional audio CODEC formats.............................................................................................................. 28
Table 5. List of supported audio CODEC formats for audio stream from Source to Sink in forward channel...... 28
Table 6. Wi-Fi Display H.264 profiles.................................................................................................................... 29
Table 7. Video codecs and profiles applicable for transcoding mode................................................................... 30
Table 8. Video codecs and profiles applicable for Non-Transcoding Mode ......................................................... 31
Table 9. Codecs and profiles applicable for auxiliary streams.............................................................................. 31
Table 10. Supported video resolutions and frame rates ......................................................................................... 32
Table 11. Connectivity scheme resolution .............................................................................................................. 41
Table 12. Connectivity resolution scheme when using Secondary Sinks............................................................... 54
Table 13. Input Category Code............................................................................................................................... 64
Table 14. Generic input message format................................................................................................................ 66
Table 15. Generic Input Type ID for user inputs of the Generic Category.............................................................. 66
Table 16. Describe Field of the Generic Input Message for Left Mouse Down/Touch Down................................. 67
Table 17. Describe Field of the Generic Input Message for Left Mouse Move/Touch Move.................................. 67
Table 18. Describe Field of the Generic Input Message for Zoom ......................................................................... 67
Table 19. Describe Field of the Generic Input Message for Vertical Scroll ............................................................ 68
Table 20. Describe Field of the Generic Input Message for Horizontal Scroll ........................................................ 68
Table 21. Describe Field of the Generic Input Message for Rotate........................................................................ 68
Table 22. HIDC message format............................................................................................................................. 69
Table 23. HID Input Path......................................................................................................................................... 69
Table 24. HID Type ................................................................................................................................................. 69
Table 25. WFD IE Format ....................................................................................................................................... 80
Table 26. General Format of a WFD Subelement .................................................................................................. 80
Table 27. WFD Subelement ID Definitions ............................................................................................................. 80
Table 28. WFD Device Information Subelement..................................................................................................... 81
Table 29. WFD Device Information Field ................................................................................................................ 82
Table 30. Associated BSSID Subelement .............................................................................................................. 83
Table 31. Coupled Sink Information Subelement ................................................................................................... 83
Table 32. Coupled Sink Status Bitmap ................................................................................................................... 83
Table 33. WFD Video Formats Subelement ........................................................................................................... 84
Table 34. Supported CEA Resolution/Refresh Rates ............................................................................................. 85
Table 35. Supported VESA Resolution/Refresh Rates........................................................................................... 85
Table 36. Supported HH Resolutions/Refresh Rates ............................................................................................. 86
Table 37. Display Native Resolution Refresh Rate................................................................................................. 87
Table 38. Profiles Bitmap ........................................................................................................................................ 87
Table 39. Maximum H.264 Level Supported........................................................................................................... 88
Table 40. Slice Encoding parameters bitmap ......................................................................................................... 88
Table 41. Video Frame Rate Control Support Bitmap ............................................................................................ 89
Table 42. WFD Audio Formats Subelement ........................................................................................................... 89
Table 43. LPCM Modes bitmap............................................................................................................................... 90
Table 44. AAC Codec bitmap.................................................................................................................................. 91
Table 45. AC3 Modes bitmap.................................................................................................................................. 91
Table 46. WFD Extended Capability Subelement................................................................................................... 91
Table 47. WFD Extended Capabilities Bitmap........................................................................................................ 92
Table 48. Local IP Address Subelement................................................................................................................. 92
Table 49. WFD Session Information Subelement................................................................................................... 93
Table 50. WFD Device Info Descriptor field............................................................................................................ 93
Table 51. Alternative MAC Address Subelement.................................................................................................... 94
Table 52. WFD R2 Device Information Subelement............................................................................................... 94
Table 53. WFD R2 Device Information ................................................................................................................... 94
Table 54. WFD Subelements in a Beacon Frame .................................................................................................. 95
Table 55. WFD Subelements in a Probe Request Frame ...................................................................................... 95
Table 56. Tunneled Probe Request/Response....................................................................................................... 95
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Table 57. WFD Subelements in a Probe Response Frame.................................................................................... 96
Table 58. WFD Subelements in an Association/Reassociation Request Frame.................................................... 97
Table 59. WFD Subelements in an Association/Reassociation Response Frame................................................. 97
Table 60. WFD Subelements in a GO Negotiation Request Frame ....................................................................... 98
Table 61. WFD Subelements in a GO Negotiation Response Frame .................................................................... 98
Table 62. WFD Subelements in a GO Negotiation Confirmation Frame ................................................................ 98
Table 63. WFD Subelements in a P2P Invitation Request Frame.......................................................................... 99
Table 64. WFD Subelements in a P2P Invitation Response Frame....................................................................... 99
Table 65. WFD Subelements in a Provision Discovery Request Frame ................................................................ 100
Table 66. WFD Subelements in a Provision Discovery Response Frame.............................................................. 100
Table 67. WFD R2 Command................................................................................................................................. 101
Table 68. WFD R2 TCP Connection Request Command....................................................................................... 101
Table 69. WFD R2 Capability Definitions used for Service Discovery Information ................................................ 101
Table 70. WFD R2 Video Formats Information....................................................................................................... 102
Table 71. Supported CEA Resolution/Refresh Rates ............................................................................................. 103
Table 72. Supported VESA Resolution/Refresh Rates........................................................................................... 104
Table 73. Supported HH Resolutions/Refresh Rates ............................................................................................. 105
Table 74. Display Native Resolution Refresh Rate................................................................................................. 106
Table 75. WFD Video Codec Info Descriptor field .................................................................................................. 106
Table 76. Video Codec Type field values in WFD R2 Video Codec Info Descriptor .............................................. 107
Table 77. Video Codec Profile Bitmap values in WFD Video Codec Info Descriptor ............................................. 107
Table 78. Video Codec Level Bitmap values in WFD R2 Video Codec Info Descriptor ......................................... 108
Table 79. WFD R2 Aux Stream Formats Information ............................................................................................. 109
Table 80. Aux Stream Codecs Bitmap.................................................................................................................... 109
Table 81. Reference Overlay Resolution Refresh Rate.......................................................................................... 110
Table 82. WFD R2 Audio Formats Information....................................................................................................... 110
Table 83. LPCM Modes bitmap for WFD R2 devices ............................................................................................. 112
Table 84. CTA Audio Modes Bitmap....................................................................................................................... 113
Table 85. AAC-ELDv2 Modes Bitmap..................................................................................................................... 113
Table 86. WFD R2 Extended Capabilities Bitmap .................................................................................................. 114
Table 87. WFD R2 Synchronous Streaming Information field bit mapping ............................................................ 114
Table 88. wfd-url0 and wfd-url1 values in wfd-presentation-url .............................................................................. 121
Table 89. wfd-client-rtp-ports parameter values in M3 Response message .......................................................... 121
Table 90. wfd-client-rtp-ports parameter values in M3 Response message and corresponding values in the
subsequent M4/M6 Request message ................................................................................................... 122
Table 91. Display connector type field .................................................................................................................... 124
Table 92. CTA data block header ........................................................................................................................... 129
Table 93. CTA Extended Tag Code........................................................................................................................ 129
Table 94. CTA audio formats allowed in WFD R2 .................................................................................................. 130
Table 95. RTSP methods that the WFD Source and/or WFD Sink can invoke ...................................................... 132
Table 96. Reason Code for RTSP M4 Response in WFD...................................................................................... 133
Table 97. Summary of RTSP parameters............................................................................................................... 135
Table 98. List of defined RTSP messages and their identifiers .............................................................................. 138
Table 99. Remote_I2C_Read_Request.................................................................................................................. 151
Table 100. Remote_I2C_Write_Request .................................................................................................................. 152
Table 101. Remote_I2C_Read_Reply_Ack .............................................................................................................. 152
Table 102. Remote_I2C_Read_Reply_Nak.............................................................................................................. 152
Table 103. Remote_I2C_Write_Reply_Ack .............................................................................................................. 152
Table 104. Remote_I2C_Write_Reply_Nak.............................................................................................................. 153
Table 105. MPEG-TS parameters for supported audio, video and image formats................................................... 156
Table 106. PES structure and field values for 48ksps/44.1ksps 16bits 2-ch LPCM................................................. 157
Table 107. PES structure and field values for Dolby AC-3 ....................................................................................... 158
Table 108. PES structure and field values for E-AC-3.............................................................................................. 160
Table 109. PES structure and field values for AAC-LC ............................................................................................ 161
Table 110. RTP encapsulation of MPEG-TS ............................................................................................................ 163
Table 111. PES structure and field values for Auxiliary Stream ............................................................................... 164
Table 112. Alpha selection and associated blending modes.................................................................................... 167
Table 113. JPEG stream descriptor.......................................................................................................................... 169
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Table 114. PNG stream descriptor............................................................................................................................ 170
Table 115. PES Structure for WFD R2 LPCM audio ................................................................................................ 172
Table 116. Quantization_word_length ...................................................................................................................... 174
Table 117. Audio_sampling_frequency..................................................................................................................... 174
Table 118. Number_of_audio_channels ................................................................................................................... 174
Table 119. Bitmap for the Speaker Location Names ................................................................................................ 176
Table 120. Syncwords associated with DTS-HD audio ............................................................................................ 178
Table 121. Frame packing arrangement SEI syntax element and values at Wi-Fi Display...................................... 181
Table 122. RTSP message example-1 ..................................................................................................................... 185
Table 123. RTSP message example-2 ..................................................................................................................... 187
Table 124. RTSP M3 message to query available buffer length .............................................................................. 187
Table 125. RTSP M4 and M6 messages for switching to TCP................................................................................. 188
Table 126. RTSP M4 and M6 message for switching to UDP .................................................................................. 188
Table 127. RTSP M3 message for requesting audio buffer information................................................................... 189
Table 128. RTSP M3 message for requesting video buffer information................................................................... 189
Table 129. HDCP 2.x Notation Mapping................................................................................................................... 191
Table 130. Example of RTSP messages to exchange CTA Audio parameters between WFD R2 Source and
WFD R2 Sink .......................................................................................................................................... 192
Table 131. Data Block Header Example................................................................................................................... 192
Table 132. AC-3 Short Audio Descriptor Example.................................................................................................... 193
Table 133. Enhanced AC-3 Short Audio Descriptor Example .................................................................................. 193
Table 134. DTS-HD Short Audio Descriptor Example .............................................................................................. 193
Table 135. L-PCM 3D Short Audio Descriptor Example........................................................................................... 193
Table 136. Room Configuration Data Block Example............................................................................................... 194
Table 137. Speaker Location Data Block Example................................................................................................... 194
Table 138. Audio InfoFrame Example....................................................................................................................... 195
Table 139. Room Configuration Data Block Example 2............................................................................................ 195
Table 140. Speaker Location Data Block Example 2................................................................................................ 196
Table 141. Speaker Location Data Block Example 3................................................................................................ 196