WO2016119563A1 - 无线同屏系统中的反向传输音频的方法及装置 - Google Patents

无线同屏系统中的反向传输音频的方法及装置 Download PDF

Info

Publication number
WO2016119563A1
WO2016119563A1 PCT/CN2015/099927 CN2015099927W WO2016119563A1 WO 2016119563 A1 WO2016119563 A1 WO 2016119563A1 CN 2015099927 W CN2015099927 W CN 2015099927W WO 2016119563 A1 WO2016119563 A1 WO 2016119563A1
Authority
WO
WIPO (PCT)
Prior art keywords
receiving device
reverse
setting parameter
sending
audio
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/099927
Other languages
English (en)
French (fr)
Inventor
赵旭
刘霖
田康
龙容
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Mobile Communications Group Co Ltd
Original Assignee
China Mobile Communications Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Mobile Communications Corp filed Critical China Mobile Communications Corp
Publication of WO2016119563A1 publication Critical patent/WO2016119563A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols

Definitions

  • the present disclosure relates to the field of terminal, wireless, and data services, and in particular, to a method and apparatus for reverse transmission of audio in a wireless simultaneous screen system.
  • Miracast devices provide simplified discovery and setup, allowing users to quickly transfer video between devices.
  • the Miracast protocol defines several mechanisms and methods for transmitting multimedia information between multiple devices via Wireless Fidelity (Wi-Fi).
  • Wi-Fi Wireless Fidelity
  • the roles of the device are divided into Source device and Sink device. At the same time, it is specified that the audio and video streams are transmitted from the Source device to the Sink device.
  • the current Miracast V1.0 wireless on-screen multimedia transmission technology the multimedia stream based on the Real Time Streaming Protocol (RTSP) can only be transmitted from the Source device to the Sink device.
  • RTSP Real Time Streaming Protocol
  • the mobile terminal has a telephone access, and the reply of the existing Miracast protocol to the phone and the pickup of the voice can only be performed through the device of the mobile terminal itself, and the body system cannot be used.
  • the microphone is used to input telephone data, which is inconvenient for the driver.
  • a traditional solution to this problem is to transmit voice streams from the sink device to the source device via the Bluetooth Telephony Control Protocol Specification-Binary (TCS-Binary), but the TCS-Binary controls the Bluetooth device to take audio signals from The application layer is directly transmitted to the baseband layer, so that the sink device cannot analyze and process the audio signal, which cannot meet the requirements of Miracast V2.0.
  • TCS-Binary Bluetooth Telephony Control Protocol Specification-Binary
  • the present disclosure provides a method and apparatus for reverse transmission of audio in a wireless simultaneous screen system. By separately opening a channel for reverse audio transmission, reverse transmission of an audio signal from a receiving device to a transmitting device is implemented.
  • the present disclosure adopts the following technical solutions.
  • a method for reversely transmitting audio in a wireless co-screen system which is applied to a transmitting device in the wireless co-screen system, and the method includes:
  • step of performing the negotiation with the receiving device to perform the reverse audio transmission capability of the receiving device to the sending device includes:
  • an acquisition parameter response GET_PARAMETER RESPONSE message where the acquiring parameter response message is used to indicate whether the receiving device supports reverse audio transmission
  • the acquiring parameter response message indicates that the receiving device supports reverse audio transmission, sending a first setting parameter request SET_PARAMETER REQUEST message to the receiving device, where the first setting parameter request message is used to perform with the receiving device Negotiation of audio decoding capabilities;
  • the acquiring parameter response message carries the IP address information of the receiving device and the port number information of the channel for transmitting the reverse audio data.
  • the first setting parameter request message carries a domain for audio decoding capability negotiation
  • the domain for audio decoding capability negotiation includes: format information of an audio signal supported by the sending device, and corresponding Mode information and delay information.
  • step of starting the monitoring of the reverse audio channel port by the sending device includes:
  • the second setting parameter request message includes a domain for controlling reverse audio transmission, and the domain for controlling reverse audio transmission carries the startup Sending device command information for listening to the reverse audio channel port;
  • the method further includes:
  • the third setting parameter request message includes a domain for controlling reverse audio transmission, and the domain for controlling reverse audio transmission carries a shutdown Sending device command information for listening to the reverse audio channel port;
  • the method further includes:
  • the fourth setting parameter request message includes a domain for controlling reverse audio transmission, and the domain for controlling reverse audio transmission carries audio data Control command information;
  • a method for reverse transmission of audio in a wireless on-screen system is provided, which is applied to a receiving device in the wireless co-screen system, the method comprising:
  • Audio data is transmitted to the transmitting device through the reverse audio channel port.
  • step of the negotiation process of responding to the reverse audio transmission capability initiated by the sending device includes:
  • the acquiring parameter response message carries the IP address information of the receiving device and the port number information of the channel for transmitting the reverse audio data.
  • the first setting parameter request message carries a domain for audio decoding capability negotiation
  • the domain for audio decoding capability negotiation includes: format information of an audio signal supported by the sending device, and corresponding Mode information and delay information.
  • step of initiating the listening process initiated by the sending device to the reverse audio channel port includes:
  • the sending device Receiving, by the sending device, a second setting parameter request message, where the second setting parameter request message carries a domain for controlling reverse audio transmission, where the domain for controlling reverse audio transmission includes starting the Sending device command information for listening to the reverse audio channel port;
  • the method further includes:
  • a third setting parameter request message carries a domain for controlling reverse audio transmission, where the domain for controlling reverse audio transmission is used
  • the command information including turning off the monitoring of the reverse audio channel port by the sending device
  • the method further includes:
  • the fourth setting parameter request message includes a domain for controlling reverse audio transmission, and the domain for controlling reverse audio transmission carries pair audio data Control command information;
  • an apparatus for reversely transmitting audio of a wireless on-screen system which is applied to a transmitting device in the wireless co-screen system, the device comprising:
  • a discovery module configured to discover a receiving device in the wireless co-screen system, and establish a connection with the receiving device
  • a negotiation module configured to perform, by the receiving device, a negotiation of a reverse audio transmission capability from the receiving device to the sending device;
  • the monitoring module is configured to start monitoring the reverse audio channel port by the sending device after the reverse audio transmission capability negotiation is successful;
  • a receiving module configured to receive audio data that is sent by the receiving device by using the reverse audio channel port.
  • the negotiation module includes:
  • a first negotiation request sending unit configured to send a get parameter request GET_PARAMETER REQUEST message to the receiving device, where the get parameter request message includes a field for performing reverse audio transmission capability negotiation;
  • a first negotiation request feedback receiving unit configured to receive an acquisition parameter response GET_PARAMETER RESPONSE message fed back by the receiving device, where the acquiring parameter response message is used to indicate whether the receiving device supports reverse audio transmission;
  • a second negotiation request sending unit configured to send a first setting parameter request SET_PARAMETER REQUEST message to the receiving device, if the acquiring parameter response message indicates that the receiving device supports reverse audio transmission, the first setting parameter request The message is used for negotiating with the receiving device for audio decoding capability;
  • a second negotiation request feedback receiving unit configured to receive a first setting parameter response SET_PARAMETER RESPONSE message fed back by the receiving device, where the first setting parameter response message is used to indicate whether the receiving device supports audio decoding of the sending device ability.
  • the acquiring parameter response message carries the IP address information of the receiving device and the port number information of the channel for transmitting reverse audio data.
  • the first setting parameter request message carries a domain for audio decoding capability negotiation
  • the domain for audio decoding capability negotiation includes: format information of an audio signal supported by the sending device, and corresponding Mode information and delay information.
  • the startup monitoring unit includes:
  • a startup command sending unit configured to send a second setting parameter request message to the receiving device, where the second setting parameter request message includes a domain for controlling reverse audio transmission, where the terminal is used to control reverse audio transmission
  • the domain carries command information for initiating listening of the reverse audio channel port by the sending device
  • a start command feedback receiving unit configured to receive a second setting parameter response message fed back by the receiving device, where the second setting parameter response message carries information that agrees to enable the sending device to listen to the reverse audio transmission channel port .
  • the device further includes: a shutdown monitoring module, configured to: turn off the monitoring of the reverse audio channel port by the sending device, where the shutdown monitoring module includes:
  • a shutdown command sending unit configured to send a third setting parameter request message to the receiving device, where the third setting parameter request message includes a domain for controlling reverse audio transmission, where the terminal is used to control reverse audio transmission
  • the domain carries command information for turning off the listening of the reverse audio channel port by the sending device
  • a command output receiving unit is configured to receive a third setting parameter response message fed back by the receiving device, where the third setting parameter response message carries a consent to turn off the sending device to the reverse audio The information for listening to the transmission channel port.
  • the device further includes: a control module, configured to perform corresponding control on the audio data received by the sending device after receiving the audio data sent by the receiving device through the reverse audio channel port, where
  • the control module includes:
  • control command sending unit configured to send a fourth setting parameter request message to the receiving device, where the fourth setting parameter request message includes a domain for controlling reverse audio transmission, and the domain for controlling reverse audio transmission Carrying control command information for audio data;
  • a control command feedback receiving unit configured to receive a fourth setting parameter response message fed back by the receiving device, where the fourth setting parameter response message is used to indicate that the receiving device has implemented the audio data according to the control command The corresponding control operation.
  • an apparatus for reversely transmitting audio of a wireless on-screen system which is applied to a receiving device in the wireless co-screen system, the device comprising:
  • a discovery response module configured to respond to a discovery process of the sending device in the wireless co-screen system, and establish a connection with the sending device
  • a negotiation response module configured to respond to the negotiation process of the reverse audio transmission capability initiated by the sending device, and after the negotiation succeeds, initiate a listening process initiated by the sending device to the reverse audio channel port;
  • a sending module configured to send audio data to the sending device by using the reverse audio channel port.
  • the negotiation response module includes:
  • the first negotiation request receiving unit receives the acquisition parameter request GET_PARAMETER REQUEST message sent by the sending device, where the obtaining parameter request message includes a field for performing reverse audio transmission capability negotiation;
  • a first negotiation request feedback sending unit configured to send an acquisition parameter response GET_PARAMETER RESPONSE message to the sending device, where the acquiring parameter response message is used to indicate whether the receiving device supports reverse audio transmission;
  • a second negotiation request receiving unit configured to receive a first setting parameter request sent by the sending device, if the acquiring parameter response message indicates that the receiving device supports reverse audio transmission a SET_PARAMETER REQUEST message, the first setting parameter request message is used to negotiate with the receiving device for audio decoding capability;
  • the second negotiation request feedback sending unit is configured to send a first setting parameter response message to the sending device, where the first setting parameter response message is used to indicate whether the receiving device supports the audio decoding capability of the sending device.
  • the acquiring parameter response message carries the IP address information of the receiving device and the port number information of the channel for transmitting the reverse audio data.
  • the first setting parameter request message carries a domain for audio decoding capability negotiation
  • the domain for audio decoding capability negotiation includes: format information of an audio signal supported by the sending device, and corresponding Mode information and delay information.
  • negotiation response module further includes:
  • a startup command receiving unit configured to receive a second setup parameter request message sent by the sending device, where the second setup parameter request message carries a domain for controlling reverse audio transmission, where the terminal is used to control reverse audio transmission
  • the domain includes command information for initiating the listening of the reverse audio channel port by the transmitting device
  • the command output sending unit is configured to send a second setting parameter response message to the sending device, where the second setting parameter response message carries information that agrees to enable the sending device to listen to the reverse audio transmission channel port.
  • the device further includes: a shutdown response module, configured to: in response to the sending, by the sending device, to close the monitoring of the reverse audio channel port, where the shutdown response module includes:
  • a closing command receiving unit configured to receive a third setting parameter request message sent by the sending device, where the third setting parameter request message carries a domain for controlling reverse audio transmission, where the method is used to control reverse audio transmission
  • the domain includes command information for turning off the listening of the reverse audio channel port by the transmitting device
  • the command output sending unit is configured to send a third setting parameter response message to the sending device, where the third setting parameter response message carries information that agrees to turn off the monitoring of the reverse audio transmission channel port by the sending device.
  • the device further includes: a control response module, configured to pass the reverse audio channel a port, after the audio data is sent to the sending device, in response to the sending, by the sending device, performing corresponding control on the reversely transmitted audio data, where the control response module includes:
  • control command receiving unit configured to receive a fourth setting parameter request message sent by the sending device, where the fourth setting parameter request message includes a domain for controlling reverse audio transmission, where the terminal is used to control reverse audio transmission
  • the domain carries control command information for the audio data
  • a control command feedback sending unit configured to send a fourth setting parameter response message to the sending device, where the fourth setting parameter response message is used to indicate that the receiving device has implemented corresponding to the audio data according to the control command Control operation.
  • the method and device for reversely transmitting audio in a wireless on-screen system provided by the present disclosure, by opening a channel for reverse audio transmission, using the RTSP protocol for capability negotiation without changing the existing RTSP protocol, Corresponding domains and messages enable the reverse transmission of audio data from the receiving device to the transmitting device. Since the method and device provided by the present disclosure realize reverse transmission of audio without establishing reverse RTSP service, the amount of equipment modification is reduced, the overhead is reduced, and the demand of Miracast V2.0 is satisfied.
  • FIG. 1 is a flowchart of a method for transmitting reverse audio in a wireless on-screen system applied to a transmitting device according to an embodiment of the present disclosure
  • FIG. 3 is a specific flowchart of negotiation of reverse audio transmission capability in an example provided by an embodiment of the present disclosure
  • FIG. 4 is a flowchart of a device for starting a sending device to monitor a reverse audio channel port according to an embodiment of the present disclosure
  • FIG. 5 is a flowchart of shutting down a transmission device to listen to a reverse audio channel port according to an embodiment of the present disclosure
  • FIG. 6 is a flowchart showing the monitoring of the reverse audio channel port by the transmitting device in the example provided by the embodiment of the present disclosure
  • FIG. 7 is a flowchart of corresponding control of receiving audio data by a transmitting device according to an embodiment of the present disclosure
  • FIG. 8 is a flowchart showing corresponding control of the received audio data by the transmitting device in the example provided by the embodiment of the present disclosure
  • FIG. 9 is a flowchart of a method for reverse transmitting audio in a wireless on-screen system applied to a receiving device according to an embodiment of the present disclosure
  • FIG. 10 is a flowchart of a negotiation of a reverse audio transmission capability initiated by a response sending device according to an embodiment of the present disclosure
  • FIG. 11 is a flowchart showing the initiation of monitoring of a reverse audio channel port by a sending device initiated by an embodiment of the present disclosure
  • FIG. 12 is a flowchart showing the shutdown of the reverse audio channel port initiated by the sending device according to the embodiment of the present disclosure
  • FIG. 13 is a flowchart showing corresponding control of reverse-transmitted audio data initiated by a response transmitting device according to an embodiment of the present disclosure
  • FIG. 14 is a block diagram showing a reverse transmission audio device applied to a wireless on-screen system of a transmitting device side according to an embodiment of the present disclosure
  • FIG. 15 is a block diagram of a negotiation module according to an embodiment of the present disclosure.
  • FIG. 16 is a block diagram of a startup monitoring module according to an embodiment of the present disclosure.
  • FIG. 17 is a block diagram showing a shutdown monitoring module according to an embodiment of the present disclosure.
  • FIG. 18 is a block diagram of a control module according to an embodiment of the present disclosure.
  • FIG. 19 is a block diagram showing a reverse transmission audio device applied to a wireless on-screen system of a receiving device end according to an embodiment of the present disclosure
  • 20 is a block diagram of a negotiation response module provided by an embodiment of the present disclosure.
  • FIG. 21 is a block diagram showing a shutdown response module according to an embodiment of the present disclosure.
  • FIG. 22 is a block diagram showing a control response module according to an embodiment of the present disclosure.
  • FIG. 23 is a schematic diagram of an application scenario of a wireless co-screen system in the related art.
  • FIG. 24 is a schematic diagram of an application scenario of a wireless on-screen system according to an embodiment of the present disclosure.
  • Figure 25 is a diagram showing the overall frame provided by an embodiment of the present disclosure.
  • a method for reverse transmission of audio in a wireless in-screen system is provided, which is applied to a transmitting device in the wireless co-screen system.
  • the sending device is configured to synchronously display multimedia content of the current display content, such as video and audio, to a receiving device in the wireless co-screen system; the reverse audio transmission refers to the receiving device Audio is transmitted to the transmitting device. As shown in FIG.
  • the method includes: Step S101: Discovering a receiving device in the wireless co-screen system, and establishing a connection with the receiving device; Step S102: Performing a receiving device to a sending device with the receiving device Negotiating the reverse audio transmission capability; step S103, after the negotiation is successful, starting the monitoring of the reverse audio channel port by the sending device; and step S104, receiving the audio sent by the receiving device through the reverse audio channel port data.
  • the reverse audio transmission capability is negotiated. If the receiving device supports the reverse audio transmission, the receiving device can transmit the audio data through the reverse audio transmission channel to implement audio reception. The reverse transmission of the device to the transmitting device.
  • Step S101 Discover a receiving device in the wireless co-screen system, and establish a connection with the receiving device.
  • This step follows the steps taken when the normal on-screen session is established.
  • the transmitting device first searches whether there is a receiving device having the same wireless on-screen function, and if so, establishes a connection with the receiving device.
  • Step S102 Perform, by the receiving device, negotiation of a reverse audio transmission capability from the receiving device to the sending device.
  • This step is used to complete the negotiation of the reverse audio transmission capability between the sending device and the receiving device.
  • the negotiation process is completed in the M3 and M4 messages of the RTSP protocol, and the original message for capability negotiation is reused, thereby reducing the equipment transformation. The amount of work.
  • reverse audio transmission capability negotiation In order to perform negotiation of the reverse audio transmission capability, a domain for performing reverse audio transmission capability negotiation is added to the method provided by the embodiment of the present disclosure. Among them, as shown in Figure 2, reverse audio transmission capability
  • the specific process of negotiation includes:
  • Step S201 Send a get parameter request GET_PARAMETER REQUEST message to the receiving device, where the get parameter request message includes a field for performing reverse audio transmission capability negotiation;
  • This step is a request message that the sending device sends a reverse audio transmission capability negotiation to the receiving device, and the step is completed in the M3 message.
  • the obtaining parameter request GET_PARAMETER REQUEST message is used to obtain parameter information, and the domain for performing reverse audio transmission capability negotiation may be represented as wfd_rev_audio_capacity.
  • Step S202 receiving an acquisition parameter feedback GET_PARAMETER RESPONSE message fed back by the receiving device, where the acquiring parameter response message is used to indicate whether the receiving device supports reverse audio transmission;
  • the receiving device receives the request message for the reverse audio transmission capability negotiation sent by the sending device, and if the receiving device supports the reverse audio transmission, the IP address of the receiving device and the reverse audio data are transmitted in the response message.
  • the parameter response message is used to feed back the parameter information of the receiving device that the sending device needs to obtain.
  • Step S203 if the acquiring parameter response message indicates that the receiving device supports reverse audio transmission, sending a first setting parameter request SET_PARAMETER REQUEST message to the receiving device, where the first setting parameter request message is used for The receiving device performs negotiation of audio decoding capability;
  • the transmitting device also needs to negotiate the audio decoding capability with the receiving device.
  • the information about the audio supported by the transmitting device including the format information of the supported audio signal, is first specified. For example, AAC, ARM, etc., corresponding mode information, such as standard definition, high definition, etc., and delay information, after the specified, it is necessary to judge whether the receiving device can provide the audio that meets the requirements, that is, the audio decoding capability of the receiving device is negotiated. .
  • a field for audio decoding capability negotiation is added, which can be expressed as wfd_rev_audio_codes.
  • the first setting parameter request message is used for parameter setting. This step is done in the M4 message.
  • Step S204 Receive a first setting parameter response SET_PARAMETER fed back by the receiving device.
  • the RESPONSE message, the first setting parameter response message is used to indicate whether the receiving device supports audio decoding capability of the sending device.
  • the sending device receives the response message fed back by the receiving device, and determines, according to the response message, whether the receiving device supports the audio decoding capability of the sending device.
  • WFD Source represents a Wi-Fi Direct-certified transmitting device
  • WFD Sink represents a Wi-Fi Direct-certified receiving device.
  • the Wi-Fi Direct standard allows devices in a wireless network to be wireless. Routers can be connected to each other. This standard allows wireless devices to be interconnected in a point-to-point manner, and has a significant increase in transmission speed and transmission distance over Bluetooth. The specific interaction process is:
  • the Source device sends a GET_PARAMETER REQUEST message to the Sink device, where the message includes a domain wfd_rev_audio_capacity for performing reverse audio transmission capability negotiation;
  • the GET_PARAMETER RESPONSE message sent to the Source device includes wfd_rev_audio_capacity, and the IP address of the sink device is reversed in the domain for performing reverse audio transmission capability negotiation.
  • the port numbers Reverse_audio_port0 and Reverse_audio_port1 of the channel for transmitting reverse audio for example, the Reverse_audio_ip is 192.168.1.12, the Reverse_audio_port0 is 2002, and the Reverse_audio_port1 is 2003.
  • the port of the reverse audio transmission channel includes: a listening port and a data port, and the listening port is configured to monitor whether audio data needs to be transmitted, and if so, transmit the audio data through the data port.
  • the listening port is configured to monitor whether audio data needs to be transmitted, and if so, transmit the audio data through the data port.
  • the GET_PARAMETER RESPONSE message sent to the Source device is none, that is, the content in the message is empty, and the negotiation fails.
  • the Source device If the Sink device supports reverse audio transmission, the Source device also needs to negotiate the audio decoding capability with the Sink device.
  • the Source device sends a SET_PARAMETER REQUEST message to the Sink device, where the message includes an audio decoding capability for the Sink device.
  • the negotiated domain the domain used for negotiation with the Sink device for audio decoding capability can be expressed as Wfd_rev_audio_codes, in the domain for negotiating audio decoding capability, including codec mode Codec supported by the source device, corresponding mode Modes, and delay Latency information, for example, the Codec is Linear Pulse Code Modulation (LPCM), The mode is 00000003, and the delay is 00;
  • LPCM Linear Pulse Code Modulation
  • the sink device supports the source device audio decoding capability
  • the SET_PARAMETER RESPONSE message sent to the source device includes OK information indicating that the source device audio decoding capability is supported. If not supported, the message includes indicating that the source device audio decoding capability is not supported. NO information.
  • Step S103 After the reverse audio transmission capability negotiation and the audio decoding capability negotiation succeed, starting, by the sending device, the monitoring of the reverse audio channel port;
  • the transmission device needs to be turned on for the reverse audio channel port, and the essence is that the port of the reverse audio channel is Turn on the status for audio transmission.
  • the specific implementation process is as follows:
  • Step S401 Send a second setting parameter request message to the receiving device, where the second setting parameter request message includes a domain for controlling reverse audio transmission, where the domain for controlling reverse audio transmission carries Initiating command information of the sending device to listen to the reverse audio channel port;
  • Step S402 Receive a second setting parameter response message fed back by the receiving device, where the second setting parameter response message carries information that agrees to enable the sending device to listen to the reverse audio transmission channel port.
  • the method provided by the embodiment of the present disclosure further includes the step of shutting down the listening device to the reverse audio channel port, as shown in FIG. 5, the specific implementation process is as follows:
  • Step S501 Send a third setting parameter request message to the receiving device, where the third setting parameter request message includes a domain for controlling reverse audio transmission, where the domain for controlling reverse audio transmission carries Turning off command information of the sending device to listen to the reverse audio channel port;
  • Step S502 receiving a third setting parameter response message fed back by the receiving device, the third The setting parameter response message carries information that agrees to turn off the monitoring of the reverse audio transmission channel port by the sending device.
  • the Source device sends a SET_PARAMETER REQUEST message to the Sink device, where the message includes a field for controlling reverse audio transmission, and the field for controlling reverse audio transmission can be expressed as wfd_rev_audio_setting, which is used to control reverse audio transmission.
  • the domain carries a command information enable that enables the source device to listen to the reverse audio channel port;
  • the sink device agrees to enable the source device to listen to the reverse audio channel port
  • the SET_PARAMETER RESPONSE message sent to the source device carries the OK message indicating that the source device is allowed to listen to the reverse audio channel port.
  • the SET_PARAMETER REQUEST message sent by the Source device to the sink device includes the domain wfd_rev_audio_setting for controlling the reverse audio transmission, and the source device to the reverse audio channel port. Listening command information disable;
  • the sink device agrees to turn off the monitoring of the reverse audio channel port by the source device
  • the SET_PARAMETER RESPONSE message sent to the source device carries an OK message indicating that the source device is allowed to turn off the listening of the reverse audio channel port.
  • Step S104 Receive audio data sent by the receiving device through the reverse audio channel port.
  • the sending device After the sending device monitors the reverse audio channel port, it can receive the audio sent by the receiving device.
  • the method provided by the embodiment of the present disclosure further includes: performing corresponding control on the audio data received by the sending device, as shown in FIG. As shown in Figure 7, the specific control process includes:
  • Step S701 Send a fourth setting parameter request message to the receiving device, where the fourth setting is
  • the parameter request message includes a domain for controlling reverse audio transmission, and the domain for controlling reverse audio transmission carries control command information for audio data;
  • Step S702 Receive a fourth setting parameter response message fed back by the receiving device, where the fourth setting parameter response message is used to indicate that the receiving device has performed a corresponding control operation on the audio data according to the control command.
  • the transmitting device provided by the embodiment of the present disclosure performs a corresponding control process on the received audio data, an example will be described below, as shown in FIG. 8.
  • the Source device sends a SET_PARAMETER REQUEST message to the Sink device, where the message includes a domain wfd_rev_audio_setting for controlling reverse audio transmission, and the domain carries control information play for the audio stream, that is, a play command;
  • the Sink device After executing the play command, the Sink device feeds back to the source device a message that the control operation has been completed: SET_PARAMETER RESPONSE, and the message carries the OK information;
  • the Source device sends a SET_PARAMETER REQUEST message to the Sink device, where the message includes a domain wfd_rev_audio_setting for controlling reverse audio transmission, and the domain carries a control information pause for the audio stream, that is, a pause command;
  • the Sink device After executing the pause command, the Sink device feeds back to the Source device a message that the control operation has been completed: SET_PARAMETER RESPONSE, and the message carries the OK information.
  • a method for transmitting audio in reverse direction of a wireless on-screen system is provided, which is applied to a receiving device in the wireless co-screen system.
  • the method includes: Step S901: respond to the discovery process of the sending device, and establish a connection with the sending device.
  • the device initiates a monitoring process for the reverse audio channel port; and in step S903, the audio data is sent to the transmitting device through the reverse audio channel port.
  • the receiving device responds to the discovery process of the transmitting device, establishes a connection with the transmitting device, performs reverse audio transmission capability negotiation, and transmits audio data, thereby implementing reverse transmission of audio.
  • Step S901 Respond to the discovery process of the sending device, and establish a connection with the sending device.
  • the step is a response of the receiving device to step S101, in response to the discovery process of the sending device, And establish a connection with the sending device.
  • Step S902 Respond to the negotiation process of the reverse audio transmission capability initiated by the sending device, and after the negotiation succeeds, initiate a listening process initiated by the sending device to the reverse audio channel port.
  • the step is that the receiving device responds to step S102 and step S103, performs capability negotiation with the transmitting device, and responds to the command information for enabling the sending device to listen to the reverse audio channel port.
  • the domain for performing reverse audio transmission capability negotiation is added to the method provided by the embodiment of the present disclosure.
  • the specific process of negotiating in response to the reverse audio transmission capability includes:
  • Step S1001 receiving an acquisition parameter sent by the sending device, requesting a GET_PARAMETER REQUEST message, where the acquiring parameter request message includes a domain for performing reverse audio transmission capability negotiation;
  • Step S1002 Send an acquisition parameter response GET_PARAMETER RESPONSE message to the sending device, where the acquiring parameter response message is used to indicate whether the receiving device supports reverse audio transmission;
  • Step S1003 If the acquiring parameter response message indicates that the receiving device supports reverse audio transmission, receiving a first setting parameter request SET_PARAMETER REQUEST message sent by the sending device, where the first setting parameter request message is used for Declaring the receiving device to perform audio decoding capability;
  • Step S1004 Send a first setting parameter response message to the sending device, where the first setting parameter response message is used to indicate whether the receiving device supports audio decoding capability of the sending device.
  • steps S1001 to S1004 correspond to steps S201 to S204, except that steps S201 to S204 are described from the perspective of the transmitting device, and steps S1001 to S1004 are described from the perspective of the receiving device, and redundant description is not performed here.
  • the transmission device needs to be turned on for the reverse audio channel port, and the essence is that the port of the reverse audio channel is turned on. Status for audio transmission. As shown in Figure 11, the specific implementation process is as follows:
  • Step S1101 Receive a second setup parameter request message sent by the sending device, where the second The setting parameter request message carries a domain for controlling reverse audio transmission, and the domain for controlling reverse audio transmission includes command information for starting monitoring of the reverse audio channel port by the sending device;
  • Step S1102 Send a second setting parameter response message to the sending device, where the second setting parameter response message carries information that agrees to enable the sending device to listen to the reverse audio transmission channel port.
  • steps S1101 to S1102 correspond to the steps S401 to S402, except that the steps S401 to S402 are described from the perspective of the transmitting device, and the steps S1101 to S1102 are described from the perspective of the receiving device, and no redundant description is performed here.
  • the method provided by the embodiment of the present disclosure further includes the step of shutting down the listening to the reverse audio channel port initiated by the sending device, as shown in FIG. 12, the specific implementation process is as follows:
  • Step S1201 Receive a third setting parameter request message sent by the sending device, where the third setting parameter request message carries a domain for controlling reverse audio transmission, where the domain for controlling reverse audio transmission includes Turning off command information of the sending device to listen to the reverse audio channel port;
  • Step S1201 Send a third setting parameter response message to the sending device, where the third setting parameter response message carries information that agrees to turn off the monitoring of the reverse audio transmission channel port by the sending device.
  • steps S1201 to S1202 correspond to steps S501 to S502, except that steps S501 to S502 are described from the perspective of the transmitting device, and steps S1201 to S1202 are described from the perspective of the receiving device, and redundant description is not performed here.
  • Step S903 Send audio data to the sending device by using the reverse audio channel port.
  • the sending device After the sending device monitors the reverse audio channel port, it can send audio data to the sending device.
  • the method provided by the embodiment of the present disclosure further includes: responding to the reversely transmitted audio data initiated by the sending device.
  • Control as shown in Figure 13, the specific control process includes:
  • Step S1301 Receive a fourth setting parameter request message sent by the sending device, where the fourth setting parameter request message includes a domain for controlling reverse audio transmission, where the domain for controlling reverse audio transmission carries Control command information for audio data;
  • Step S1302 Send a fourth setting parameter response message to the sending device, where the fourth setting parameter response message is used to indicate that the receiving device has performed a corresponding control operation on the audio data according to the control command.
  • steps S1301 to S1302 correspond to steps S701 to S702, except that steps S701 to S702 are described from the perspective of the transmitting device, and steps S1301 to S1302 are described from the perspective of the receiving device, and redundant description is not performed here.
  • the acquiring parameter response message carries the IP address information of the receiving device and the port number information of the channel for transmitting the reverse audio data.
  • the first setting parameter request message carries a domain for audio decoding capability negotiation
  • the domain for audio decoding capability negotiation includes: format information of the audio signal supported by the transmitting device, corresponding mode information, and time Extended information.
  • a device for transmitting audio in reverse direction of a wireless on-screen system which is applied to a transmitting device in the wireless co-screen system.
  • the device includes:
  • the discovery module 1401 is configured to discover a receiving device in the wireless co-screen system, and establish a connection with the receiving device.
  • the negotiation module 1402 is configured to perform, by the receiving device, negotiation of a reverse audio transmission capability from the receiving device to the sending device.
  • the monitoring module 1403 is configured to start monitoring the reverse audio channel port by the sending device after the negotiation succeeds;
  • the receiving module 1404 is configured to receive audio data that is sent by the receiving device by using the reverse audio channel port.
  • the negotiation module 1402 includes:
  • a first negotiation request sending unit 1501 configured to send a get parameter request GET_PARAMETER REQUEST message to the receiving device, where the get parameter request message includes a field for performing reverse audio transmission capability negotiation;
  • the first negotiation request feedback receiving unit 1502 is configured to receive an acquisition parameter response GET_PARAMETER RESPONSE message fed back by the receiving device, where the acquiring parameter response message is used to indicate the Whether the receiving device supports reverse audio transmission;
  • a second negotiation request sending unit 1503 configured to send a first setting parameter request SET_PARAMETER REQUEST message to the receiving device, if the acquiring parameter response message indicates that the receiving device supports reverse audio transmission, the first setting parameter The request message is used for negotiation with the receiving device for audio decoding capability;
  • a second negotiation request feedback receiving unit 1504 configured to receive a first setting parameter response SET_PARAMETER RESPONSE message fed back by the receiving device, where the first setting parameter response message is used to indicate whether the receiving device supports audio of the sending device Decoding ability.
  • the acquiring parameter response message carries the IP address information of the receiving device and the port number information of the channel for transmitting the reverse audio data.
  • the first setting parameter request message carries a domain for audio decoding capability negotiation
  • the domain for audio decoding capability negotiation includes: format information of an audio signal supported by the sending device, and corresponding Mode information and delay information.
  • the startup monitoring module 1403 includes:
  • the startup command sending unit 1601 is configured to send a second setting parameter request message to the receiving device, where the second setting parameter request message includes a domain for controlling reverse audio transmission, where the method is used to control reverse audio transmission.
  • the domain carries command information for initiating the listening of the reverse audio channel port by the sending device;
  • the startup command feedback receiving unit 1602 is configured to receive a second setting parameter response message fed back by the receiving device, where the second setting parameter response message carries a consent to enable the sending device to monitor the reverse audio transmission channel port. information.
  • the apparatus further includes: a shutdown monitoring module 1406, configured to disable monitoring of the reverse audio channel port by the sending device, wherein, as shown in FIG. 17, the monitoring mode is closed 1406.
  • a shutdown monitoring module 1406, configured to disable monitoring of the reverse audio channel port by the sending device, wherein, as shown in FIG. 17, the monitoring mode is closed 1406.
  • the shutdown command sending unit 1701 is configured to send a third setting parameter request message to the receiving device, where the third setting parameter request message includes a domain for controlling reverse audio transmission, where the method is used to control reverse audio transmission.
  • the domain carries command information for turning off the listening of the reverse audio channel port by the sending device;
  • the closing command feedback receiving unit 1702 is configured to receive a third setting parameter response message fed back by the receiving device, where the third setting parameter response message carries a message that agrees to turn off the monitoring of the reverse audio transmission channel port by the sending device. information.
  • the apparatus further includes: a control module 1405, configured to receive audio received by the sending device after receiving audio data sent by the receiving device through the reverse audio channel port. The data is controlled accordingly, wherein, as shown in FIG. 18, the control module 1405 includes:
  • control command sending unit 1801 configured to send a fourth setting parameter request message to the receiving device, where the fourth setting parameter request message includes a domain for controlling reverse audio transmission, where the terminal is used to control reverse audio transmission.
  • the domain carries control command information for the audio data;
  • a control command feedback receiving unit 1802 configured to receive a fourth setting parameter response message fed back by the receiving device, where the fourth setting parameter response message is used to indicate that the receiving device has implemented the audio data according to the control command Perform the appropriate control operations.
  • the device is a device corresponding to the method for reversely transmitting audio in the wireless on-screen system of the transmitting device, and all the implementation manners in the foregoing method embodiments are applicable to the device embodiment. Can also achieve the same technical effect.
  • a device for transmitting audio in reverse direction of a wireless co-screen system which is applied to a receiving device in the wireless co-screen system, as shown in FIG.
  • the discovery response module 1901 is configured to respond to the discovery process of the sending device, and establish a connection with the sending device.
  • the negotiation response module 1902 is configured to respond to the negotiation process of the reverse audio transmission capability initiated by the sending device, and after the negotiation succeeds, initiate a monitoring process initiated by the sending device to the reverse audio channel port;
  • the sending module 1903 is configured to send audio data to the sending device by using the reverse audio channel port.
  • the negotiation response module 1902 includes:
  • the first negotiation request receiving unit 2001 receives the acquisition parameter request sent by the sending device. a GET_PARAMETER REQUEST message, where the acquisition parameter request message includes a domain for performing reverse audio transmission capability negotiation;
  • the first negotiation request feedback sending unit 2002 is configured to send an acquisition parameter response GET_PARAMETER RESPONSE message to the sending device, where the acquiring parameter response message is used to indicate whether the receiving device supports reverse audio transmission;
  • a second negotiation request receiving unit 2003 configured to receive a first setting parameter request SET_PARAMETER REQUEST message sent by the sending device, if the acquiring parameter response message indicates that the receiving device supports reverse audio transmission, the first setting The parameter request message is used for negotiating with the receiving device for audio decoding capability;
  • the second negotiation request feedback sending unit 2004 is configured to send a first setting parameter response message to the sending device, where the first setting parameter response message is used to indicate whether the receiving device supports the audio decoding capability of the sending device.
  • the acquiring parameter response message carries the IP address information of the receiving device and the port number information of the channel for transmitting the reverse audio data.
  • the first setting parameter request message carries a domain for audio decoding capability negotiation
  • the domain for audio decoding capability negotiation includes: format information of an audio signal supported by the sending device, and corresponding Mode information and delay information.
  • the negotiation response module 1902 further includes:
  • the startup command receiving unit 2005 is configured to receive a second setting parameter request message sent by the sending device, where the second setting parameter request message carries a domain for controlling reverse audio transmission, where the method is used to control reverse audio.
  • the transmitted domain includes command information for initiating listening of the reverse audio channel port by the transmitting device;
  • the startup command feedback sending unit 2006 is configured to send a second setting parameter response message to the sending device, where the second setting parameter response message carries information that agrees to enable the sending device to listen to the reverse audio transmission channel port. .
  • the apparatus further includes: a close response module 1905, configured to close the listening of the reverse audio channel port in response to the sending device, wherein, as shown in FIG. 21, the closing
  • the response module 1905 includes:
  • the closing command receiving unit 2101 is configured to receive a third setting parameter request message sent by the sending device, where the third setting parameter request message carries a domain for controlling reverse audio transmission, where the method is used to control reverse audio.
  • the transmitted domain includes command information for turning off the listening of the reverse audio channel port by the transmitting device;
  • the closing command feedback sending unit 2102 is configured to send a third setting parameter response message to the sending device, where the third setting parameter response message carries information that agrees to turn off the monitoring of the reverse audio transmission channel port by the sending device. .
  • the apparatus further includes: a control response module 1904, configured to respond to the opposite of the sending device by using the reverse audio channel port after transmitting audio data to the sending device. Corresponding control is performed on the transmitted audio data, wherein, as shown in FIG. 22, the control response module 1904 includes:
  • the control command receiving unit 2201 is configured to receive a fourth setting parameter request message sent by the sending device, where the fourth setting parameter request message includes a domain for controlling reverse audio transmission, where the terminal is used to control reverse audio transmission.
  • the domain carries control command information for the audio data;
  • a control command feedback sending unit 2202 configured to send a fourth setting parameter response message to the sending device, where the fourth setting parameter response message is used to indicate that the receiving device has implemented the audio data according to the control command. The corresponding control operation.
  • the device is a device corresponding to the method for reversely transmitting audio in the wireless on-screen system of the receiving device, and all the implementation manners in the foregoing method embodiments are applicable to the device embodiment. Can also achieve the same technical effect.
  • the method and apparatus for describing a transmitting device and a receiving device in a wireless co-screen system overcome the transmission of audio data in the wireless co-screen system of the related art only by the transmitting device to the receiving device. Open a set of ports to provide a channel for reverse voice, and perform RTSP-based media streaming or media streaming in other encapsulated formats.
  • the main advantage of this solution is that it does not affect the capabilities of existing RTSP services.
  • FIG. 23 and FIG. 24 the related art and the application scenario of the solution are provided in the related art, and related technologies, audio and video are provided. Streams can only be transferred from the Source device to the Sink device, but not in reverse. In this scenario, audio can be implemented from the Sink device.
  • the reverse transmission to the Source device broadens the range of applications for wireless on-screen systems.
  • the overall framework of the present disclosure is different from the related art in that a set of ports for reverse audio transmission is separately opened, and the existing protocol is reused, thereby reducing equipment modification. The amount of work.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

本公开提供了无线同屏系统中的反向传输音频的方法及装置。应用于所述无线同屏系统中发送设备的反向传输音频的方法包括：发现所述无线同屏系统中的接收设备，并与所述接收设备建立连接；与所述接收设备进行由接收设备到发送设备的反向音频传输能力的协商；在协商成功之后，启动所述发送设备对反向音频通道端口的监听；接收所述接收设备通过所述反向音频通道端口发送的音频数据。

Description

无线同屏系统中的反向传输音频的方法及装置
相关申请的交叉引用
本申请主张在2015年1月28日在中国提交的中国专利申请号No.201510043973.8的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及终端、无线、数据业务领域，尤其涉及一种无线同屏系统中的反向传输音频的方法及装置。
背景技术
Miracast设备提供简化发现和设置，使用户可以迅速在设备间传输视频。而Miracast协议定义了多个设备间通过Wireless Fidelity(Wi-Fi)的方式传输多媒体信息的若干机制以及方法，在Miracast V1.0的协议中，规定了设备的角色分为Source设备和Sink设备两种，同时，规定了音视频流由Source设备向Sink设备传输。
但是当前的Miracast V1.0无线同屏多媒体传输技术，其基于实时流传输协议(Real Time Streaming Protocol，RTSP)的多媒体流只能实现从Source设备向Sink设备的传输，在一定的使用场景下，存在一定的局限性。例如，移动终端同屏到车载设备的过程中，移动终端有电话接入，现有的Miracast协议对该电话的回复以及话音的拾取只能通过移动终端本身的设备来进行，无法使用车身系统的麦克风来输入电话数据，给驾驶员带来不便。而针对这一问题的一个传统解决方案是：通过蓝牙电话Telephony Control Protocol Specification-Binary(TCS-Binary)实现语音流从Sink设备到Source设备的传送，但是TCS-Binary是控制蓝牙设备将音频信号从应用层直接传送到基带层，使Sink设备无法分析处理音频信号，无法满足Miracast V2.0的需求。
发明内容
本公开提供一种无线同屏系统中的反向传输音频的方法及装置，通过单独开设一反向音频传输的通道，实现音频信号从接收设备向发送设备的反向传输。
本公开采用如下技术方案。
依据本公开的一个方面，提供了一种无线同屏系统中的反向传输音频的方法，应用于所述无线同屏系统中的发送设备，所述方法包括：
发现所述无线同屏系统中的接收设备，并与所述接收设备建立连接；
与所述接收设备进行由接收设备到发送设备的反向音频传输能力的协商；
在所述反向音频传输能力的协商成功之后，启动所述发送设备对反向音频通道端口的监听；
接收所述接收设备通过所述反向音频通道端口发送的音频数据。
进一步的，所述与所述接收设备进行由接收设备到发送设备的反向音频传输能力的协商的步骤，具体包括：
向所述接收设备发送获取参数请求GET_PARAMETER REQUEST消息，所述获取参数请求消息中包括有用于进行反向音频传输能力协商的域；
接收所述接收设备反馈的获取参数应答GET_PARAMETER RESPONSE消息，所述获取参数应答消息用于指示所述接收设备是否支持反向音频传输；
若所述获取参数应答消息指示所述接收设备支持反向音频传输，则向所述接收设备发送第一设置参数请求SET_PARAMETER REQUEST消息，所述第一设置参数请求消息用于与所述接收设备进行音频解码能力的协商；
接收所述接收设备反馈的第一设置参数应答SET_PARAMETER RESPONSE消息，所述第一设置参数应答消息用于指示所述接收设备是否支持所述发送设备的音频解码能力。
进一步的，若所述接收设备支持反向音频传输，所述获取参数应答消息中携带有所述接收设备的IP地址信息和传输反向音频数据的通道的端口号信息。
进一步的，所述第一设置参数请求消息中携带有用于音频解码能力协商的域，所述用于音频解码能力协商的域中包括：所述发送设备所支持的音频信号的格式信息、相应的模式信息和时延信息。
进一步的，所述启动所述发送设备对反向音频通道端口的监听的步骤，具体包括：
向所述接收设备发送第二设置参数请求消息，所述第二设置参数请求消息中包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有启动所述发送设备对反向音频通道端口的监听的命令信息；
接收所述接收设备反馈的第二设置参数应答消息，所述第二设置参数应答消息中携带有同意开启所述发送设备对反向音频传输通道端口的监听的信息。
进一步的，在接收所述接收设备通过所述反向音频通道端口发送的音频数据之后，所述方法还包括：
向所述接收设备发送第三设置参数请求消息，所述第三设置参数请求消息中包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有关闭所述发送设备对反向音频通道端口的监听的命令信息；
接收所述接收设备反馈的第三设置参数应答消息，所述第三设置参数应答消息中携带有同意关闭所述发送设备对反向音频传输通道端口的监听的信息。
进一步的，在接收所述接收设备通过所述反向音频通道端口发送的音频数据之后，所述方法还包括：
向所述接收设备发送第四设置参数请求消息，所述第四设置参数请求消息包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有对音频数据的控制命令信息；
接收所述接收设备反馈的第四设置参数应答消息，所述第四设置参数应答消息用于指示所述接收设备已根据所述控制命令实现对所述音频数据进行相应的控制操作。
依据本公开的另一个方面，提供了一种无线同屏系统的反向传输音频的方法，应用于所述无线同屏系统中的接收设备，所述方法包括：
响应所述无线同屏系统中的发送设备的发现过程，并与所述发送设备建立连接；
响应所述发送设备发起的反向音频传输能力的协商过程，并在协商成功之后，响应所述发送设备发起的启动对所述反向音频通道端口的监听过程；
通过所述反向音频通道端口，向所述发送设备发送音频数据。
进一步的，所述响应所述发送设备发起的反向音频传输能力的协商过程的步骤，具体包括：
接收所述发送设备发送的获取参数请求GET_PARAMETER REQUEST消息，所述获取参数请求消息中包括有用于进行反向音频传输能力协商的域；
向所述发送设备发送获取参数应答GET_PARAMETER RESPONSE消息，所述获取参数应答消息用于指示所述接收设备是否支持反向音频传输；
若所述获取参数应答消息指示所述接收设备支持反向音频传输，则接收所述发送设备发送的第一设置参数请求SET_PARAMETER REQUEST消息，所述第一设置参数请求消息用于与所述接收设备进行音频解码能力的协商；
向所述发送设备发送第一设置参数应答消息，所述第一设置参数应答消息用于指示所述接收设备是否支持所述发送设备的音频解码能力。
进一步的，若所述接收设备支持反向音频传输，所述获取参数应答消息中携带有所述接收设备的IP地址信息和传输反向音频数据的通道的端口号信息。
进一步的，所述第一设置参数请求消息中携带有用于音频解码能力协商的域，所述用于音频解码能力协商的域中包括：所述发送设备所支持的音频信号的格式信息、相应的模式信息和时延信息。
进一步的，所述响应所述发送设备发起的启动对所述反向音频通道端口的监听过程的步骤，具体包括：
接收所述发送设备发送的第二设置参数请求消息，所述第二设置参数请求消息中携带有用于控制反向音频传输的域，所述用于控制反向音频传输的域中包括启动所述发送设备对反向音频通道端口的监听的命令信息；
向所述发送设备发送第二设置参数应答消息，所述第二设置参数应答消息中携带有同意开启所述发送设备对反向音频传输通道端口的监听的信息。
进一步的，在接收设备向所述发送设备发送音频数据之后，所述方法还包括：
接收所述发送设备发送的第三设置参数请求消息，所述第三设置参数请求消息中携带有用于控制反向音频传输的域，所述用于控制反向音频传输的域中 包括关闭所述发送设备对反向音频通道端口的监听的命令信息；
向所述发送设备发送第三设置参数应答消息，所述第三设置参数应答消息中携带有同意关闭所述发送设备对反向音频传输通道端口的监听的信息。
进一步的，在接收设备向所述发送设备发送音频数据之后，所述方法还包括：
接收所述发送设备发送的第四设置参数请求消息，所述第四设置参数请求消息包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有对音频数据的控制命令信息；
向所述发送设备发送第四设置参数应答消息，所述第四设置参数应答消息用于指示所述接收设备已根据所述控制命令实现对所述音频数据进行相应的控制操作。
依据本公开的另一个方面，提供了一种无线同屏系统的反向传输音频的装置，应用于所述无线同屏系统中的发送设备，所述装置包括：
发现模块，用于发现所述无线同屏系统中的接收设备，并与所述接收设备建立连接；
协商模块，用于与所述接收设备进行由接收设备到发送设备的反向音频传输能力的协商；
启动监听模块，用于在所述反向音频传输能力协商成功之后，启动所述发送设备对反向音频通道端口的监听；
接收模块，用于接收所述接收设备通过所述反向音频通道端口发送的音频数据。
进一步的，所述协商模块包括：
第一协商请求发送单元，用于向所述接收设备发送获取参数请求GET_PARAMETER REQUEST消息，所述获取参数请求消息中包括有用于进行反向音频传输能力协商的域；
第一协商请求反馈接收单元，用于接收所述接收设备反馈的获取参数应答GET_PARAMETER RESPONSE消息，所述获取参数应答消息用于指示所述接收设备是否支持反向音频传输；
第二协商请求发送单元，用于若所述获取参数应答消息指示所述接收设备支持反向音频传输，则向所述接收设备发送第一设置参数请求SET_PARAMETER REQUEST消息，所述第一设置参数请求消息用于与所述接收设备进行音频解码能力的协商；
第二协商请求反馈接收单元，用于接收所述接收设备反馈的第一设置参数应答SET_PARAMETER RESPONSE消息，所述第一设置参数应答消息用于指示所述接收设备是否支持所述发送设备的音频解码能力。
进一步的，若所述接收设备支持反向音频传输，所述获取参数应答消息中携带有所述接收设备的IP地址信息和传输反向音频数据的通道的端口号信息
进一步的，所述第一设置参数请求消息中携带有用于音频解码能力协商的域，所述用于音频解码能力协商的域中包括：所述发送设备所支持的音频信号的格式信息、相应的模式信息和时延信息。
进一步的，所述启动监听单元包括：
启动命令发送单元，用于向所述接收设备发送第二设置参数请求消息，所述第二设置参数请求消息中包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有启动所述发送设备对反向音频通道端口的监听的命令信息；
启动命令反馈接收单元，用于接收所述接收设备反馈的第二设置参数应答消息，所述第二设置参数应答消息中携带有同意开启所述发送设备对反向音频传输通道端口的监听的信息。
进一步的，所述装置还包括：关闭监听模块，用于关闭所述发送设备对反向音频通道端口的监听，其中，所述关闭监听模块包括：
关闭命令发送单元，用于向所述接收设备发送第三设置参数请求消息，所述第三设置参数请求消息中包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有关闭所述发送设备对反向音频通道端口的监听的命令信息；
关闭命令反馈接收单元，用于接收所述接收设备反馈的第三设置参数应答消息，所述第三设置参数应答消息中携带有同意关闭所述发送设备对反向音频 传输通道端口的监听的信息。
进一步的，所述装置还包括：控制模块，用于在接收所述接收设备通过所述反向音频通道端口发送的音频数据之后，对所述发送设备接收到的音频数据进行相应的控制，其中，所述控制模块包括：
控制命令发送单元，用于向所述接收设备发送第四设置参数请求消息，所述第四设置参数请求消息包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有对音频数据的控制命令信息；
控制命令反馈接收单元，用于接收所述接收设备反馈的第四设置参数应答消息，所述第四设置参数应答消息用于指示所述接收设备已根据所述控制命令实现对所述音频数据进行相应的控制操作。
依据本公开的另一个方面，提供了一种无线同屏系统的反向传输音频的装置，应用于所述无线同屏系统中的接收设备，所述装置包括：
发现响应模块，用于响应所述无线同屏系统中的发送设备的发现过程，并与所述发送设备建立连接；
协商响应模块，用于响应所述发送设备发起的反向音频传输能力的协商过程，并在协商成功之后，响应所述发送设备发起的启动对所述反向音频通道端口的监听过程；
发送模块，用于通过所述反向音频通道端口，向所述发送设备发送音频数据。
进一步的，所述协商响应模块包括：
第一协商请求接收单元，接收所述发送设备发送的获取参数请求GET_PARAMETER REQUEST消息，所述获取参数请求消息中包括有用于进行反向音频传输能力协商的域；
第一协商请求反馈发送单元，用于向所述发送设备发送获取参数应答GET_PARAMETER RESPONSE消息，所述获取参数应答消息用于指示所述接收设备是否支持反向音频传输；
第二协商请求接收单元，用于若所述获取参数应答消息指示所述接收设备支持反向音频传输，则接收所述发送设备发送的第一设置参数请求 SET_PARAMETER REQUEST消息，所述第一设置参数请求消息用于与所述接收设备进行音频解码能力的协商；
第二协商请求反馈发送单元，用于向所述发送设备发送第一设置参数应答消息，所述第一设置参数应答消息用于指示所述接收设备是否支持所述发送设备的音频解码能力。
进一步的，若所述接收设备支持反向音频传输，所述获取参数应答消息中携带有所述接收设备的IP地址信息和传输反向音频数据的通道的端口号信息。
进一步的，所述第一设置参数请求消息中携带有用于音频解码能力协商的域，所述用于音频解码能力协商的域中包括：所述发送设备所支持的音频信号的格式信息、相应的模式信息和时延信息。
进一步的，所述协商响应模块还包括：
启动命令接收单元，用于接收所述发送设备发送的第二设置参数请求消息，所述第二设置参数请求消息中携带有用于控制反向音频传输的域，所述用于控制反向音频传输的域中包括启动所述发送设备对反向音频通道端口的监听的命令信息；
启动命令反馈发送单元，用于向所述发送设备发送第二设置参数应答消息，所述第二设置参数应答消息中携带有同意开启所述发送设备对反向音频传输通道端口的监听的信息。
进一步的，所述装置还包括：关闭响应模块，用于响应所述发送设备发起的关闭对反向音频通道端口的监听，其中，所述关闭响应模块包括：
关闭命令接收单元，用于接收所述发送设备发送的第三设置参数请求消息，所述第三设置参数请求消息中携带有用于控制反向音频传输的域，所述用于控制反向音频传输的域中包括关闭所述发送设备对反向音频通道端口的监听的命令信息；
关闭命令反馈发送单元，用于向所述发送设备发送第三设置参数应答消息，所述第三设置参数应答消息中携带有同意关闭所述发送设备对反向音频传输通道端口的监听的信息。
进一步的，所述装置还包括：控制响应模块，用于通过所述反向音频通道 端口，向所述发送设备发送音频数据之后，响应所述发送设备发起的对反向传输的音频数据进行相应的控制，其中，所述控制响应模块包括：
控制命令接收单元，用于接收所述发送设备发送的第四设置参数请求消息，所述第四设置参数请求消息包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有对音频数据的控制命令信息；
控制命令反馈发送单元，用于向所述发送设备发送第四设置参数应答消息，所述第四设置参数应答消息用于指示所述接收设备已根据所述控制命令实现对所述音频数据进行相应的控制操作。
本公开提供的无线同屏系统中的反向传输音频的方法及装置，通过开设一反向音频传输的通道，在不改变现有RTSP协议的基础上，利用RTSP协议进行能力协商，并配以相应的域和消息，实现音频数据由接收设备向发送设备的反向传输。由于本公开提供的方法及装置是在不建立反向RTSP服务的情况下，实现了音频的反向传输，减少了设备改造量，降低了开销，同时满足了Miracast V2.0需求。
附图说明
图1表示本公开实施例提供的应用于发送设备端的无线同屏系统中的反向传输音频的方法流程图；
图2表示本公开实施例提供的反向音频传输能力的协商具体流程图；
图3表示本公开实施例提供的示例中反向音频传输能力的协商具体流程图；
图4表示本公开实施例提供的启动发送设备对反向音频通道端口的监听的流程图；
图5表示本公开实施例提供的关闭发送设备对反向音频通道端口的监听的流程图；
图6表示本公开实施例提供的示例中启动或关闭发送设备对反向音频通道端口的监听的流程图；
图7表示本公开实施例提供的发送设备对接收到的音频数据进行相应控制的流程图；
图8表示本公开实施例提供的示例中发送设备对接收到的音频数据进行相应控制的流程图；
图9表示本公开实施例提供的应用于接收设备端的无线同屏系统中的反向传输音频的方法流程图；
图10表示本公开实施例提供的响应发送设备发起的反向音频传输能力的协商具体流程图；
图11表示本公开实施例提供的响应发送设备发起的启动对反向音频通道端口的监听的流程图；
图12表示本公开实施例提供的响应发送设备发起的关闭对反向音频通道端口的监听的流程图；
图13表示本公开实施例提供的响应发送设备发起的对反向传输的音频数据进行相应控制的流程图；
图14表示本公开实施例提供的应用于发送设备端的无线同屏系统的反向传输音频装置的框图；
图15表示本公开实施例提供的协商模块框图；
图16表示本公开实施例提供的启动监听模块框图；
图17表示本公开实施例提供的关闭监听模块框图；
图18表示本公开实施例提供的控制模块框图；
图19表示本公开实施例提供的应用于接收设备端的无线同屏系统的反向传输音频装置的框图；
图20表示本公开实施例提供的协商响应模块框图；
图21表示本公开实施例提供的关闭响应模块框图；
图22表示本公开实施例提供的控制响应模块框图；
图23表示相关技术中无线同屏系统的应用场景示意图；
图24表示本公开实施例提供的无线同屏系统的应用场景示意图；
图25表示本公开实施例提供的整体框架图。
具体实施方式
下面将参照附图详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，本公开的技术方案可以以各种形式实现，本公开不应被这里阐述的实施例所限制。提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
依据本公开实施例的一个方面，提供了一种无线同屏系统中的反向传输音频的方法，应用于所述无线同屏系统中的发送设备。其中，所述发送设备用于将其当前的显示内容，例如视频、音频等多媒体信息，同步显示到所述无线同屏系统中的接收设备上；所述反向音频传输指从所述接收设备向所述发送设备传输音频。如图1所示，所述方法包括：步骤S101、发现所述无线同屏系统中的接收设备，并与所述接收设备建立连接；步骤S102、与所述接收设备进行由接收设备到发送设备的反向音频传输能力的协商；步骤S103、在协商成功之后，启动所述发送设备对反向音频通道端口的监听；步骤S104、接收所述接收设备通过所述反向音频通道端口发送的音频数据。在该方法中，发送设备与接收设备建立连接之后，进行反向音频传输能力的协商，若接收设备支持反向音频传输，则接收设备可通过反向音频传输通道传输音频数据，实现音频由接收设备向发送设备的反向传输。下面将针对以上所述四个步骤分别进行描述。
步骤S101、发现所述无线同屏系统中的接收设备，并与所述接收设备建立连接；
该步骤沿用普通的同屏会话建立时所采用的步骤，发送设备首先搜索周围是否存在具有相同无线同屏功能的接收设备，若存在则与接收设备建立连接。
步骤S102、与所述接收设备进行由接收设备到发送设备的反向音频传输能力的协商；
该步骤是用于完成发送设备与接收设备反向音频传输能力的协商，其协商过程在RTSP协议的M3和M4消息中完成，复用原有的用于能力协商的消息，降低了设备改造的工作量。
为了进行反向音频传输能力的协商，本公开实施例所提供的方法中增加了用于进行反向音频传输能力协商的域。其中，如图2所示，反向音频传输能力 的协商具体流程包括：
步骤S201、向所述接收设备发送获取参数请求GET_PARAMETER REQUEST消息，所述获取参数请求消息中包括有用于进行反向音频传输能力协商的域；
该步骤就是发送设备向接收设备发送反向音频传输能力协商的请求消息，该步骤是在M3消息中完成。其中，获取参数请求GET_PARAMETER REQUEST消息用于获取参数信息，用于进行反向音频传输能力协商的域可表示为wfd_rev_audio_capacity。
步骤S202、接收所述接收设备反馈的获取参数应答GET_PARAMETER RESPONSE消息，所述获取参数应答消息用于指示所述接收设备是否支持反向音频传输；
在该步骤中，接收设备接收发送设备发送的反向音频传输能力协商的请求消息，若接收设备支持反向音频传输，则需在应答消息中传输接收设备的IP地址和传输反向音频数据的通道的端口号；若接收设备不支持反向音频传输，则向发送设备反馈的应答消息的内容为空，即反向音频传输能力协商失败，也无需继续执行步骤S203和步骤S204。其中，获取参数应答消息用于反馈发送设备需要获取的接收设备的参数信息。
步骤S203、若所述获取参数应答消息指示所述接收设备支持反向音频传输，则向所述接收设备发送第一设置参数请求SET_PARAMETER REQUEST消息，所述第一设置参数请求消息用于与所述接收设备进行音频解码能力的协商；
若接收设备支持反向音频传输，发送设备还要与接收设备进行音频解码能力的协商，通俗来讲就是，首先规定发送设备所支持的音频的相关信息，包括所支持的音频信号的格式信息，如AAC、ARM等、相应的模式信息，如标清、高清等以及时延信息，在规定完后，还要去判断接收设备是否能提供符合要求的音频，即与接收设备进行音频解码能力的协商。
为完成音频解码能力的协商，增加了用于音频解码能力协商的域，可表示为wfd_rev_audio_codes。其中，第一设置参数请求消息用于进行参数设置。该步骤是在M4消息中完成。
步骤S204、接收所述接收设备反馈的第一设置参数应答SET_PARAMETER  RESPONSE消息，所述第一设置参数应答消息用于指示所述接收设备是否支持所述发送设备的音频解码能力。
该步骤中，发送设备接收由接收设备反馈的应答消息，根据所述应答消息判断接收设备是否支持发送设备的音频解码能力。
为了进一步理解本公开实施例提供的反向音频传输能力协商的过程，下面将举例说明。
如图3所示，WFD Source代表经Wi-Fi Direct认证的发送设备，WFD Sink代表经Wi-Fi Direct认证的接收设备，其中，Wi-Fi Direct标准是指允许无线网络中的设备无需通过无线路由器即可相互连接，这种标准允许无线设备以点对点形式互连，而且在传输速度与传输距离方面比蓝牙有大幅度提升。具体交互过程为：
1a.Source设备向Sink设备发送GET_PARAMETER REQUEST消息，该消息中包含有用于进行反向音频传输能力协商的域wfd_rev_audio_capacity；
1b.若Sink设备支持反向音频传输，则向Source设备发送的GET_PARAMETER RESPONSE消息，该消息中包含有wfd_rev_audio_capacity，在该用于进行反向音频传输能力协商的域中还包括Sink设备的IP地址Reverse_audio_ip和用于传输反向音频的通道的端口号Reverse_audio_port0和Reverse_audio_port1，例如，所述Reverse_audio_ip为192.168.1.12，所述Reverse_audio_port0为2002，所述Reverse_audio_port1为2003。这里需要说明的是，本公开实施例中，反向音频传输通道的端口包括：监听端口和数据端口，监听端口用于监听是否有音频数据需要传输，若有，则通过数据端口将音频数据传输到Source设备；
若Sink设备不支持反向音频传输，则向Source设备发送的GET_PARAMETER RESPONSE消息为none，即消息中的内容为空，至此协商失败；
2a.若Sink设备支持反向音频传输，Source设备还需要与Sink设备进行音频解码能力的协商，首先Source设备向Sink设备发送SET_PARAMETER REQUEST消息，该消息中包含有用于与Sink设备进行音频解码能力的协商的域，所述用于与Sink设备进行音频解码能力的协商的域可以表示为 wfd_rev_audio_codes，在该进行音频解码能力的协商的域中包括Source设备支持的编解码方式Codec，相应的模式Modes以及延时Latency等信息，例如，所述Codec为Linear Pulse Code Modulation(LPCM)，所述模式为00000003，所述延时为00；
2b.若Sink设备支持Source设备音频解码能力，则向Source设备发送的SET_PARAMETER RESPONSE消息中包含表示支持Source设备音频解码能力的OK信息，若不支持，该消息中包含表示不支持Source设备音频解码能力的NO信息。
需要说明的是，此例仅是为进一步理解本公开实施例所提供的方法而进行的描述，该例中的消息、参数、域的表示以及具体内容等，不并仅限于此。
步骤S103、在反向音频传输能力协商和音频解码能力协商成功之后，启动所述发送设备对反向音频通道端口的监听；
在反向音频传输能力协商和音频解码能力协商成功之后，若要进行反向音频的传输，还需开启发送设备对反向音频通道端口的监听，其实质即为使反向音频通道的端口处于打开状态，以便进行音频的传输。如图4所示，其具体实现过程为：
步骤S401、向所述接收设备发送第二设置参数请求消息，所述第二设置参数请求消息中包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有启动所述发送设备对反向音频通道端口的监听的命令信息；
步骤S402、接收所述接收设备反馈的第二设置参数应答消息，所述第二设置参数应答消息中携带有同意开启所述发送设备对反向音频传输通道端口的监听的信息。
进一步的，本公开实施例提供的方法还包括关闭发送设备对反向音频通道端口的监听的步骤，如图5所示，其具体实现过程为：
步骤S501、向所述接收设备发送第三设置参数请求消息，所述第三设置参数请求消息中包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有关闭所述发送设备对反向音频通道端口的监听的命令信息；
步骤S502、接收所述接收设备反馈的第三设置参数应答消息，所述第三 设置参数应答消息中携带有同意关闭所述发送设备对反向音频传输通道端口的监听的信息。
为了进一步理解本公开实施例提供的反向音频传输能力协商的过程，下面将举例说明，如图6所示。
1a.首先Source设备向Sink设备发送SET_PARAMETER REQUEST消息，该消息中包含有用于控制反向音频传输的域，该用于控制反向音频传输的域可以表示为wfd_rev_audio_setting，该用于控制反向音频传输的域中携带有启动Source设备对反向音频通道端口的监听的命令信息enable；
1b.若Sink设备同意开启Source设备对反向音频通道端口的监听，则向Source设备发送的SET_PARAMETER RESPONSE消息中携带有表示同意开启Source设备对反向音频通道端口的监听的OK信息。
2a.若要关闭Source设备对反向音频通道端口的监听，则Source设备向Sink设备发送的SET_PARAMETER REQUEST消息中包含有用于控制反向音频传输的域wfd_rev_audio_setting，以及关闭Source设备对反向音频通道端口的监听的命令信息disable；
2b.若Sink设备同意关闭Source设备对反向音频通道端口的监听，则向Source设备发送的SET_PARAMETER RESPONSE消息中携带有表示同意关闭Source设备对反向音频通道端口的监听的OK信息。
需要说明的是，此例仅是为进一步理解本公开实施例所提供的方法而进行的描述，该例中的消息、命令、域的表示以及具体内容等，不并仅限于此。
步骤S104、接收所述接收设备通过所述反向音频通道端口发送的音频数据。
开启发送设备对反向音频通道端口的监听后，就可以接收由接收设备发送过来的音频。
进一步的，在接收所述接收设备通过所述反向音频通道端口发送的音频数据之后，本公开实施例提供的方法还包括：对所述发送设备接收到的音频数据进行相应的控制，如图7所示，其具体控制过程包括：
步骤S701、向所述接收设备发送第四设置参数请求消息，所述第四设置 参数请求消息包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有对音频数据的控制命令信息；
步骤S702、接收所述接收设备反馈的第四设置参数应答消息，所述第四设置参数应答消息用于指示所述接收设备已根据所述控制命令实现对所述音频数据进行相应的控制操作。
为了进一步理解本公开实施例提供的发送设备对接收到的音频数据进行相应的控制过程，下面将举例说明，如图8所示。
1a.Source设备向Sink设备发送SET_PARAMETER REQUEST消息，该消息中包含有用于控制反向音频传输的域wfd_rev_audio_setting，该域中携带有对音频流的控制信息play，即播放命令；
1b.Sink设备端执行完播放命令后，向Source设备反馈控制操作已执行完毕的消息：SET_PARAMETER RESPONSE，该消息中携带有OK信息；
2a.Source设备向Sink设备发送SET_PARAMETER REQUEST消息，该消息中包含有用于控制反向音频传输的域wfd_rev_audio_setting，该域中携带有对音频流的控制信息pause，即暂停命令；
2b.Sink设备端执行完暂停命令后，向Source设备反馈控制操作已执行完毕的消息：SET_PARAMETER RESPONSE，该消息中携带有OK信息。
依据本公开实施例的另一个方面，提供了一种无线同屏系统的反向传输音频的方法，应用于所述无线同屏系统中的接收设备，如图9所示，所述方法包括：步骤S901、响应所述发送设备的发现过程，并与所述发送设备建立连接；步骤S902、响应所述发送设备发起的反向音频传输能力的协商过程，并在协商成功之后，响应所述发送设备发起的启动对所述反向音频通道端口的监听过程；步骤S903、通过所述反向音频通道端口，向所述发送设备发送音频数据。在该方法中，接收设备响应发送设备的发现过程，并与发送设备建立连接，进行反向音频传输能力协商，以及传输音频数据，从而实现音频的反向传输。下面将针对以上所述三个步骤分别进行描述。
步骤S901、响应所述发送设备的发现过程，并与所述发送设备建立连接。
该步骤为接收设备对步骤S101所进行的响应，响应发送设备的发现过程， 并与发送设备建立连接。
步骤S902、响应所述发送设备发起的反向音频传输能力的协商过程，并在协商成功之后，响应所述发送设备发起的启动对所述反向音频通道端口的监听过程。
该步骤为接收设备对步骤S102和步骤S103所进行的响应，与发送设备进行能力协商，并应答开启发送设备对反向音频通道端口的监听的命令信息。
其中，为了进行反向音频传输能力的协商，本公开实施例所提供的方法中增加了用于进行反向音频传输能力协商的域。其中，如图10所示，响应反向音频传输能力的协商具体流程包括：
步骤S1001、接收所述发送设备发送的获取参数请求GET_PARAMETER REQUEST消息，所述获取参数请求消息中包括有用于进行反向音频传输能力协商的域；
步骤S1002、向所述发送设备发送获取参数应答GET_PARAMETER RESPONSE消息，所述获取参数应答消息用于指示所述接收设备是否支持反向音频传输；
步骤S1003、若所述获取参数应答消息指示所述接收设备支持反向音频传输，则接收所述发送设备发送的第一设置参数请求SET_PARAMETER REQUEST消息，所述第一设置参数请求消息用于与所述接收设备进行音频解码能力的协商；
步骤S1004、向所述发送设备发送第一设置参数应答消息，所述第一设置参数应答消息用于指示所述接收设备是否支持所述发送设备的音频解码能力。
上述步骤S1001～S1004对应步骤S201～S204，只是步骤S201～S204是从发送设备的角度去描述，步骤S1001～S1004是从接收设备的角度去描述，此处不再进行过多冗余描述。
反向音频传输能力协商和音频解码能力协商成功之后，若要进行反向音频的传输，还需开启发送设备对反向音频通道端口的监听，其实质即为使反向音频通道的端口处于打开状态，以便进行音频的传输。如图11所示，其具体实现过程为：
步骤S1101、接收所述发送设备发送的第二设置参数请求消息，所述第二 设置参数请求消息中携带有用于控制反向音频传输的域，所述用于控制反向音频传输的域中包括启动所述发送设备对反向音频通道端口的监听的命令信息；
步骤S1102、向所述发送设备发送第二设置参数应答消息，所述第二设置参数应答消息中携带有同意开启所述发送设备对反向音频传输通道端口的监听的信息。
上述步骤S1101～S1102对应步骤S401～S402，只是步骤S401～S402是从发送设备的角度去描述，步骤S1101～S1102是从接收设备的角度去描述，此处不再进行过多冗余描述。
进一步的，本公开实施例提供的方法还包括响应所述发送设备发起的关闭对反向音频通道端口的监听的步骤，如图12所示，其具体实现过程为：
步骤S1201、接收所述发送设备发送的第三设置参数请求消息，所述第三设置参数请求消息中携带有用于控制反向音频传输的域，所述用于控制反向音频传输的域中包括关闭所述发送设备对反向音频通道端口的监听的命令信息；
步骤S1201、向所述发送设备发送第三设置参数应答消息，所述第三设置参数应答消息中携带有同意关闭所述发送设备对反向音频传输通道端口的监听的信息。
上述步骤S1201～S1202对应步骤S501～S502，只是步骤S501～S502是从发送设备的角度去描述，步骤S1201～S1202是从接收设备的角度去描述，此处不再进行过多冗余描述。
步骤S903、通过所述反向音频通道端口，向所述发送设备发送音频数据。
开启发送设备对反向音频通道端口的监听后，就可以向发送设备发送音频数据。
进一步的，通过所述反向音频通道端口，向所述发送设备发送音频数据之后，本公开实施例所提供的方法还包括：响应所述发送设备发起的对反向传输的音频数据进行相应的控制，如图13所示，其具体控制过程包括：
步骤S1301、接收所述发送设备发送的第四设置参数请求消息，所述第四设置参数请求消息包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有对音频数据的控制命令信息；
步骤S1302、向所述发送设备发送第四设置参数应答消息，所述第四设置参数应答消息用于指示所述接收设备已根据所述控制命令实现对所述音频数据进行相应的控制操作。
上述步骤S1301～S1302对应步骤S701～S702，只是步骤S701～S702是从发送设备的角度去描述，步骤S1301～S1302是从接收设备的角度去描述，此处不再进行过多冗余描述。
进一步的，若接收设备支持反向音频传输，获取参数应答消息中携带有接收设备的IP地址信息和传输反向音频数据的通道的端口号信息。
进一步的，第一设置参数请求消息中携带有用于音频解码能力协商的域，所述用于音频解码能力协商的域中包括：发送设备所支持的音频信号的格式信息、相应的模式信息和时延信息。
依据本公开实施例的另一个方面，提供了一种无线同屏系统的反向传输音频的装置，应用于所述无线同屏系统中的发送设备，如图14所示，所述装置包括：
发现模块1401，用于发现所述无线同屏系统中的接收设备，并与所述接收设备建立连接；
协商模块1402，用于与所述接收设备进行由接收设备到发送设备的反向音频传输能力的协商；
启动监听模块1403，用于在协商成功之后，启动所述发送设备对反向音频通道端口的监听；
接收模块1404，用于接收所述接收设备通过所述反向音频通道端口发送的音频数据。
进一步的，如图15所示，所述协商模块1402包括：
第一协商请求发送单元1501，用于向所述接收设备发送获取参数请求GET_PARAMETER REQUEST消息，所述获取参数请求消息中包括有用于进行反向音频传输能力协商的域；
第一协商请求反馈接收单元1502，用于接收所述接收设备反馈的获取参数应答GET_PARAMETER RESPONSE消息，所述获取参数应答消息用于指示所述 接收设备是否支持反向音频传输；
第二协商请求发送单元1503，用于若所述获取参数应答消息指示所述接收设备支持反向音频传输，则向所述接收设备发送第一设置参数请求SET_PARAMETER REQUEST消息，所述第一设置参数请求消息用于与所述接收设备进行音频解码能力的协商；
第二协商请求反馈接收单元1504，用于接收所述接收设备反馈的第一设置参数应答SET_PARAMETER RESPONSE消息，所述第一设置参数应答消息用于指示所述接收设备是否支持所述发送设备的音频解码能力。
进一步的，若所述接收设备支持反向音频传输，所述获取参数应答消息中携带有所述接收设备的IP地址信息和传输反向音频数据的通道的端口号信息。
进一步的，所述第一设置参数请求消息中携带有用于音频解码能力协商的域，所述用于音频解码能力协商的域中包括：所述发送设备所支持的音频信号的格式信息、相应的模式信息和时延信息。
进一步的，如图16所示，所述启动监听模块1403包括：
启动命令发送单元1601，用于向所述接收设备发送第二设置参数请求消息，所述第二设置参数请求消息中包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有启动所述发送设备对反向音频通道端口的监听的命令信息；
启动命令反馈接收单元1602，用于接收所述接收设备反馈的第二设置参数应答消息，所述第二设置参数应答消息中携带有同意开启所述发送设备对反向音频传输通道端口的监听的信息。
进一步的，如图14所示，所述装置还包括：关闭监听模块1406，用于关闭所述发送设备对反向音频通道端口的监听，其中，如图17所示，所述关闭监听模1406包括：
关闭命令发送单元1701，用于向所述接收设备发送第三设置参数请求消息，所述第三设置参数请求消息中包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有关闭所述发送设备对反向音频通道端口的监听的命令信息；
关闭命令反馈接收单元1702，用于接收所述接收设备反馈的第三设置参数应答消息，所述第三设置参数应答消息中携带有同意关闭所述发送设备对反向音频传输通道端口的监听的信息。
进一步的，如图14所示，所述装置还包括：控制模块1405，用于在接收所述接收设备通过所述反向音频通道端口发送的音频数据之后，对所述发送设备接收到的音频数据进行相应的控制，其中，如图18所示，所述控制模块1405包括：
控制命令发送单元1801，用于向所述接收设备发送第四设置参数请求消息，所述第四设置参数请求消息包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有对音频数据的控制命令信息；
控制命令反馈接收单元1802，用于接收所述接收设备反馈的第四设置参数应答消息，所述第四设置参数应答消息用于指示所述接收设备已根据所述控制命令实现对所述音频数据进行相应的控制操作。
需要说明的是，该装置是与上述同样应用于发送设备的无线同屏系统中的反向传输音频的方法对应的装置，上述方法实施例中所有实现方式均适用于该装置的实施例中，也能达到相同的技术效果。
依据本公开实施例的另一个方面，提供了一种无线同屏系统的反向传输音频的装置，应用于所述无线同屏系统中的接收设备，如图19所示，所述装置包括：
发现响应模块1901，用于响应所述发送设备的发现过程，并与所述发送设备建立连接；
协商响应模块1902，用于响应所述发送设备发起的反向音频传输能力的协商过程，并在协商成功之后，响应所述发送设备发起的启动对所述反向音频通道端口的监听过程；
发送模块1903，用于通过所述反向音频通道端口，向所述发送设备发送音频数据。
进一步的，如图20所示，所述协商响应模块1902包括：
第一协商请求接收单元2001，接收所述发送设备发送的获取参数请求 GET_PARAMETER REQUEST消息，所述获取参数请求消息中包括有用于进行反向音频传输能力协商的域；
第一协商请求反馈发送单元2002，用于向所述发送设备发送获取参数应答GET_PARAMETER RESPONSE消息，所述获取参数应答消息用于指示所述接收设备是否支持反向音频传输；
第二协商请求接收单元2003，用于若所述获取参数应答消息指示所述接收设备支持反向音频传输，则接收所述发送设备发送的第一设置参数请求SET_PARAMETER REQUEST消息，所述第一设置参数请求消息用于与所述接收设备进行音频解码能力的协商；
第二协商请求反馈发送单元2004，用于向所述发送设备发送第一设置参数应答消息，所述第一设置参数应答消息用于指示所述接收设备是否支持所述发送设备的音频解码能力。
进一步的，若所述接收设备支持反向音频传输，所述获取参数应答消息中携带有所述接收设备的IP地址信息和传输反向音频数据的通道的端口号信息。
进一步的，所述第一设置参数请求消息中携带有用于音频解码能力协商的域，所述用于音频解码能力协商的域中包括：所述发送设备所支持的音频信号的格式信息、相应的模式信息和时延信息。
进一步的，如图20所示，所述协商响应模块1902还包括：
启动命令接收单元2005，用于接收所述发送设备发送的第二设置参数请求消息，所述第二设置参数请求消息中携带有用于控制反向音频传输的域，所述用于控制反向音频传输的域中包括启动所述发送设备对反向音频通道端口的监听的命令信息；
启动命令反馈发送单元2006，用于向所述发送设备发送第二设置参数应答消息，所述第二设置参数应答消息中携带有同意开启所述发送设备对反向音频传输通道端口的监听的信息。
进一步的，如图19所示，所述装置还包括：关闭响应模块1905，用于响应所述发送设备发起的关闭对反向音频通道端口的监听，其中，如图21所示，所述关闭响应模块1905包括：
关闭命令接收单元2101，用于接收所述发送设备发送的第三设置参数请求消息，所述第三设置参数请求消息中携带有用于控制反向音频传输的域，所述用于控制反向音频传输的域中包括关闭所述发送设备对反向音频通道端口的监听的命令信息；
关闭命令反馈发送单元2102，用于向所述发送设备发送第三设置参数应答消息，所述第三设置参数应答消息中携带有同意关闭所述发送设备对反向音频传输通道端口的监听的信息。
进一步的，如图19所示，所述装置还包括：控制响应模块1904，用于通过所述反向音频通道端口，向所述发送设备发送音频数据之后，响应所述发送设备发起的对反向传输的音频数据进行相应的控制，其中，如图22所示，所述控制响应模块1904包括：
控制命令接收单元2201，用于接收所述发送设备发送的第四设置参数请求消息，所述第四设置参数请求消息包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有对音频数据的控制命令信息；
控制命令反馈发送单元2202，用于向所述发送设备发送第四设置参数应答消息，所述第四设置参数应答消息用于指示所述接收设备已根据所述控制命令实现对所述音频数据进行相应的控制操作。
需要说明的是，该装置是与上述同样应用于接收设备的无线同屏系统中的反向传输音频的方法对应的装置，上述方法实施例中所有实现方式均适用于该装置的实施例中，也能达到相同的技术效果。
综上从无线同屏系统中发送设备和接收设备的角度描述的方法及装置，本公开实施例克服了相关技术的无线同屏系统中音频数据只能由发送设备到接收设备的传输，通过单独开设一组端口，为反向语音提供通道，在该通道上进行基于RTSP的媒体流传输或其他封装格式的媒体流传输，该方案的主要优点在于，不影响现有的RTSP服务的能力，同时，减小设备的改造量，从而保证更多设备能够随协议升级，如图23和图24所示，为本公开实施例提供的相关技术与本方案的应用场景示意图，相关技术当中，音视频流只能从Source设备传输到Sink设备，而不能反向传输，本方案中，则可实现音频从Sink设备 到Source设备的反向传输，拓宽了无线同屏系统的应用范围。如图25所示，为本公开方案整体框架图，本方案与相关技术的不同点就是单独的开设了一组用于反向音频传输的端口，复用现有的协议，降低了设备改造的工作量。
以上所述的是本公开的优选实施方式，应当指出对于本技术领域的普通人员来说，在不脱离本公开所述的原理前提下还可以作出若干改进和润饰，这些改进和润饰也在本公开的保护范围内。

Claims (28)

  1. 一种无线同屏系统中的反向传输音频的方法，应用于所述无线同屏系统中的发送设备，包括：
    发现所述无线同屏系统中的接收设备，并与所述接收设备建立连接；
    与所述接收设备进行由接收设备到发送设备的反向音频传输能力的协商；
    在所述反向音频传输能力的协商成功之后，启动所述发送设备对反向音频通道端口的监听；
    接收所述接收设备通过所述反向音频通道端口发送的音频数据。
  2. 如权利要求1所述的方法，其中，所述与所述接收设备进行由接收设备到发送设备的反向音频传输能力的协商的步骤包括：
    向所述接收设备发送获取参数请求GET_PARAMETER REQUEST消息，所述获取参数请求消息中包括有用于进行反向音频传输能力协商的域；
    接收所述接收设备反馈的获取参数应答GET_PARAMETER RESPONSE消息，所述获取参数应答消息用于指示所述接收设备是否支持反向音频传输；
    若所述获取参数应答消息指示所述接收设备支持反向音频传输，则向所述接收设备发送第一设置参数请求SET_PARAMETER REQUEST消息，所述第一设置参数请求消息用于与所述接收设备进行音频解码能力的协商；
    接收所述接收设备反馈的第一设置参数应答SET_PARAMETER RESPONSE消息，所述第一设置参数应答消息用于指示所述接收设备是否支持所述发送设备的音频解码能力。
  3. 如权利要求2所述的方法，其中，若所述接收设备支持反向音频传输，所述获取参数应答消息中携带有所述接收设备的IP地址信息和传输反向音频数据的通道的端口号信息。
  4. 如权利要求2所述的方法，其中，所述第一设置参数请求消息中携带有用于音频解码能力协商的域，所述用于音频解码能力协商的域中包括：所述发送设备所支持的音频信号的格式信息、相应的模式信息和时延信息。
  5. 如权利要求1所述的方法，其中，所述启动所述发送设备对反向音频 通道端口的监听的步骤包括：
    向所述接收设备发送第二设置参数请求消息，所述第二设置参数请求消息中包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有启动所述发送设备对反向音频通道端口的监听的命令信息；
    接收所述接收设备反馈的第二设置参数应答消息，所述第二设置参数应答消息中携带有同意开启所述发送设备对反向音频传输通道端口的监听的信息。
  6. 如权利要求1所述的方法，其中，在接收所述接收设备通过所述反向音频通道端口发送的音频数据之后，所述方法还包括：
    向所述接收设备发送第三设置参数请求消息，所述第三设置参数请求消息中包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有关闭所述发送设备对反向音频通道端口的监听的命令信息；
    接收所述接收设备反馈的第三设置参数应答消息，所述第三设置参数应答消息中携带有同意关闭所述发送设备对反向音频传输通道端口的监听的信息。
  7. 如权利要求1所述的方法，其中，在接收所述接收设备通过所述反向音频通道端口发送的音频数据之后，所述方法还包括：
    向所述接收设备发送第四设置参数请求消息，所述第四设置参数请求消息包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有对音频数据的控制命令信息；
    接收所述接收设备反馈的第四设置参数应答消息，所述第四设置参数应答消息用于指示所述接收设备已根据所述控制命令实现对所述音频数据进行相应的控制操作。
  8. 一种无线同屏系统中的反向传输音频的方法，应用于所述无线同屏系统中的接收设备，包括：
    响应所述无线同屏系统中的发送设备的发现过程，并与所述发送设备建立连接；
    响应所述发送设备发起的反向音频传输能力的协商过程，并在协商成功之后，响应所述发送设备发起的启动对所述反向音频通道端口的监听过程；
    通过所述反向音频通道端口，向所述发送设备发送音频数据。
  9. 如权力要求8所述的方法，其中，所述响应所述发送设备发起的反向音频传输能力的协商过程的步骤包括：
    接收所述发送设备发送的获取参数请求GET_PARAMETER REQUEST消息，所述获取参数请求消息中包括有用于进行反向音频传输能力协商的域；
    向所述发送设备发送获取参数应答GET_PARAMETER RESPONSE消息，所述获取参数应答消息用于指示所述接收设备是否支持反向音频传输；
    若所述获取参数应答消息指示所述接收设备支持反向音频传输，则接收所述发送设备发送的第一设置参数请求SET_PARAMETER REQUEST消息，所述第一设置参数请求消息用于与所述接收设备进行音频解码能力的协商；
    向所述发送设备发送第一设置参数应答消息，所述第一设置参数应答消息用于指示所述接收设备是否支持所述发送设备的音频解码能力。
  10. 如权利要求9所述的方法，其中，若所述接收设备支持反向音频传输，所述获取参数应答消息中携带有所述接收设备的IP地址信息和传输反向音频数据的通道的端口号信息。
  11. 如权利要求9所述的方法，其中，所述第一设置参数请求消息中携带有用于音频解码能力协商的域，所述用于音频解码能力协商的域中包括：所述发送设备所支持的音频信号的格式信息、相应的模式信息和时延信息。
  12. 如权利要求8所述的方法，其中，所述响应所述发送设备发起的启动对所述反向音频通道端口的监听过程的步骤包括：
    接收所述发送设备发送的第二设置参数请求消息，所述第二设置参数请求消息中携带有用于控制反向音频传输的域，所述用于控制反向音频传输的域中包括启动所述发送设备对反向音频通道端口的监听的命令信息；
    向所述发送设备发送第二设置参数应答消息，所述第二设置参数应答消息中携带有同意开启所述发送设备对反向音频传输通道端口的监听的信息。
  13. 如权利要求8所述的方法，其中，在接收设备向所述发送设备发送音频数据之后，所述方法还包括：
    接收所述发送设备发送的第三设置参数请求消息，所述第三设置参数请求消息中携带有用于控制反向音频传输的域，所述用于控制反向音频传输的域中 包括关闭所述发送设备对反向音频通道端口的监听的命令信息；
    向所述发送设备发送第三设置参数应答消息，所述第三设置参数应答消息中携带有同意关闭所述发送设备对反向音频传输通道端口的监听的信息。
  14. 如权利要求8所述的方法，其中，在接收设备向所述发送设备发送音频数据之后，所述方法还包括：
    接收所述发送设备发送的第四设置参数请求消息，所述第四设置参数请求消息包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有对音频数据的控制命令信息；
    向所述发送设备发送第四设置参数应答消息，所述第四设置参数应答消息用于指示所述接收设备已根据所述控制命令实现对所述音频数据进行相应的控制操作。
  15. 一种无线同屏系统中的反向传输音频的装置，应用于所述无线同屏系统中的发送设备，包括：
    发现模块，用于发现所述无线同屏系统中的接收设备，并与所述接收设备建立连接；
    协商模块，用于与所述接收设备进行由接收设备到发送设备的反向音频传输能力的协商；
    启动监听模块，用于在所述反向音频传输能力协商成功之后，启动所述发送设备对反向音频通道端口的监听；
    接收模块，用于接收所述接收设备通过所述反向音频通道端口发送的音频数据。
  16. 如权利要求15所述的装置，其中，所述协商模块包括：
    第一协商请求发送单元，用于向所述接收设备发送获取参数请求GET_PARAMETER REQUEST消息，所述获取参数请求消息中包括有用于进行反向音频传输能力协商的域；
    第一协商请求反馈接收单元，用于接收所述接收设备反馈的获取参数应答GET_PARAMETER RESPONSE消息，所述获取参数应答消息用于指示所述接收设备是否支持反向音频传输；
    第二协商请求发送单元，用于若所述获取参数应答消息指示所述接收设备支持反向音频传输，则向所述接收设备发送第一设置参数请求SET_PARAMETER REQUEST消息，所述第一设置参数请求消息用于与所述接收设备进行音频解码能力的协商；
    第二协商请求反馈接收单元，用于接收所述接收设备反馈的第一设置参数应答SET_PARAMETER RESPONSE消息，所述第一设置参数应答消息用于指示所述接收设备是否支持所述发送设备的音频解码能力。
  17. 如权利要求16所述的装置，其中，若所述接收设备支持反向音频传输，所述获取参数应答消息中携带有所述接收设备的IP地址信息和传输反向音频数据的通道的端口号信息。
  18. 如权利要求16所述的装置，其中，所述第一设置参数请求消息中携带有用于音频解码能力协商的域，所述用于音频解码能力协商的域中包括：所述发送设备所支持的音频信号的格式信息、相应的模式信息和时延信息。
  19. 如权利要求15所述的装置，其中，所述启动监听单元包括：
    启动命令发送单元，用于向所述接收设备发送第二设置参数请求消息，所述第二设置参数请求消息中包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有启动所述发送设备对反向音频通道端口的监听的命令信息；
    启动命令反馈接收单元，用于接收所述接收设备反馈的第二设置参数应答消息，所述第二设置参数应答消息中携带有同意开启所述发送设备对反向音频传输通道端口的监听的信息。
  20. 如权利要求15所述的装置，还包括：关闭监听模块，用于关闭所述发送设备对反向音频通道端口的监听，其中，所述关闭监听模块包括：
    关闭命令发送单元，用于向所述接收设备发送第三设置参数请求消息，所述第三设置参数请求消息中包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有关闭所述发送设备对反向音频通道端口的监听的命令信息；
    关闭命令反馈接收单元，用于接收所述接收设备反馈的第三设置参数应答 消息，所述第三设置参数应答消息中携带有同意关闭所述发送设备对反向音频传输通道端口的监听的信息。
  21. 如权利要求15所述的装置，还包括：控制模块，用于在接收所述接收设备通过所述反向音频通道端口发送的音频数据之后，对所述发送设备接收到的音频数据进行相应的控制，其中，所述控制模块包括：
    控制命令发送单元，用于向所述接收设备发送第四设置参数请求消息，所述第四设置参数请求消息包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有对音频数据的控制命令信息；
    控制命令反馈接收单元，用于接收所述接收设备反馈的第四设置参数应答消息，所述第四设置参数应答消息用于指示所述接收设备已根据所述控制命令实现对所述音频数据进行相应的控制操作。
  22. 一种无线同屏系统中的反向传输音频的装置，应用于所述无线同屏系统中的接收设备，包括：
    发现响应模块，用于响应所述无线同屏系统中的发送设备的发现过程，并与所述发送设备建立连接；
    协商响应模块，用于响应所述发送设备发起的反向音频传输能力的协商过程，并在协商成功之后，响应所述发送设备发起的启动对所述反向音频通道端口的监听过程；
    发送模块，用于通过所述反向音频通道端口，向所述发送设备发送音频数据。
  23. 如权力要求22所述的装置，其中，所述协商响应模块包括：
    第一协商请求接收单元，接收所述发送设备发送的获取参数请求GET_PARAMETER REQUEST消息，所述获取参数请求消息中包括有用于进行反向音频传输能力协商的域；
    第一协商请求反馈发送单元，用于向所述发送设备发送获取参数应答GET_PARAMETER RESPONSE消息，所述获取参数应答消息用于指示所述接收设备是否支持反向音频传输；
    第二协商请求接收单元，用于若所述获取参数应答消息指示所述接收设备 支持反向音频传输，则接收所述发送设备发送的第一设置参数请求SET_PARAMETER REQUEST消息，所述第一设置参数请求消息用于与所述接收设备进行音频解码能力的协商；
    第二协商请求反馈发送单元，用于向所述发送设备发送第一设置参数应答消息，所述第一设置参数应答消息用于指示所述接收设备是否支持所述发送设备的音频解码能力。
  24. 如权力要求23所述的装置，其中，若所述接收设备支持反向音频传输，所述获取参数应答消息中携带有所述接收设备的IP地址信息和传输反向音频数据的通道的端口号信息。
  25. 如权力要求23所述的装置，其中，所述第一设置参数请求消息中携带有用于音频解码能力协商的域，所述用于音频解码能力协商的域中包括：所述发送设备所支持的音频信号的格式信息、相应的模式信息和时延信息。
  26. 如权力要求22所述的装置，其中，所述协商响应模块还包括：
    启动命令接收单元，用于接收所述发送设备发送的第二设置参数请求消息，所述第二设置参数请求消息中携带有用于控制反向音频传输的域，所述用于控制反向音频传输的域中包括启动所述发送设备对反向音频通道端口的监听的命令信息；
    启动命令反馈发送单元，用于向所述发送设备发送第二设置参数应答消息，所述第二设置参数应答消息中携带有同意开启所述发送设备对反向音频传输通道端口的监听的信息。
  27. 如权力要求22所述的装置，还包括：关闭响应模块，用于响应所述发送设备发起的关闭对反向音频通道端口的监听，其中，所述关闭响应模块包括：
    关闭命令接收单元，用于接收所述发送设备发送的第三设置参数请求消息，所述第三设置参数请求消息中携带有用于控制反向音频传输的域，所述用于控制反向音频传输的域中包括关闭所述发送设备对反向音频通道端口的监听的命令信息；
    关闭命令反馈发送单元，用于向所述发送设备发送第三设置参数应答消息， 所述第三设置参数应答消息中携带有同意关闭所述发送设备对反向音频传输通道端口的监听的信息。
  28. 如权力要求22所述的装置，还包括：控制响应模块，用于通过所述反向音频通道端口，向所述发送设备发送音频数据之后，响应所述发送设备发起的对反向传输的音频数据进行相应的控制，其中，所述控制响应模块包括：
    控制命令接收单元，用于接收所述发送设备发送的第四设置参数请求消息，所述第四设置参数请求消息包括有用于控制反向音频传输的域，所述用于控制反向音频传输的域中携带有对音频数据的控制命令信息；
    控制命令反馈发送单元，用于向所述发送设备发送第四设置参数应答消息，所述第四设置参数应答消息用于指示所述接收设备已根据所述控制命令实现对所述音频数据进行相应的控制操作。
PCT/CN2015/099927 2015-01-28 2015-12-30 无线同屏系统中的反向传输音频的方法及装置 Ceased WO2016119563A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510043973.8 2015-01-28
CN201510043973.8A CN105991516B (zh) 2015-01-28 2015-01-28 无线同屏系统中的反向传输音频的方法及装置

Publications (1)

Publication Number Publication Date
WO2016119563A1 true WO2016119563A1 (zh) 2016-08-04

Family

ID=56542366

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/099927 Ceased WO2016119563A1 (zh) 2015-01-28 2015-12-30 无线同屏系统中的反向传输音频的方法及装置

Country Status (2)

Country Link
CN (1) CN105991516B (zh)
WO (1) WO2016119563A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11928383B2 (en) 2021-04-16 2024-03-12 Guangzhou Shiyuan Electronic Technology Company Limited Screen projection control method, storage medium and communication apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100195539A1 (en) * 2006-11-09 2010-08-05 Dan Tian System and method for supporting automatic establishing and disconnecting several wireless connections
CN103314366A (zh) * 2011-01-14 2013-09-18 三星电子株式会社 用于在Wi-Fi直连通信系统中将用户输入从宿端装置发送到源端装置的方法和设备
CN103648015A (zh) * 2013-11-18 2014-03-19 乐视致新电子科技（天津）有限公司 一种数据显示方法和设备
CN104219551A (zh) * 2014-09-29 2014-12-17 武汉诚迈科技有限公司 一种智能设备屏幕共享与远程控制的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2867843A1 (en) * 2012-04-13 2013-10-17 Sony Corporation Wireless communication device, information processing device, and communication method
US9716737B2 (en) * 2013-05-08 2017-07-25 Qualcomm Incorporated Video streaming in a wireless communication system
US9306992B2 (en) * 2013-06-07 2016-04-05 Qualcomm Incorporated Method and system for using Wi-Fi display transport mechanisms to accomplish voice and data communications
WO2015012795A1 (en) * 2013-07-22 2015-01-29 Intel Corporation Coordinated content distribution to multiple display receivers
CN103702436B (zh) * 2013-12-11 2016-09-14 东软集团股份有限公司 Miracast反向控制方法及系统
CN104202461A (zh) * 2014-08-11 2014-12-10 苏州易动智能科技有限公司 一种连接智能手机功能同步化的汽车音响系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100195539A1 (en) * 2006-11-09 2010-08-05 Dan Tian System and method for supporting automatic establishing and disconnecting several wireless connections
CN103314366A (zh) * 2011-01-14 2013-09-18 三星电子株式会社 用于在Wi-Fi直连通信系统中将用户输入从宿端装置发送到源端装置的方法和设备
CN103648015A (zh) * 2013-11-18 2014-03-19 乐视致新电子科技（天津）有限公司 一种数据显示方法和设备
CN104219551A (zh) * 2014-09-29 2014-12-17 武汉诚迈科技有限公司 一种智能设备屏幕共享与远程控制的方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11928383B2 (en) 2021-04-16 2024-03-12 Guangzhou Shiyuan Electronic Technology Company Limited Screen projection control method, storage medium and communication apparatus

Also Published As

Publication number Publication date
CN105991516A (zh) 2016-10-05
CN105991516B (zh) 2019-06-25

Similar Documents

Publication Publication Date Title
JP6352365B2 (ja) Ｗｉ−ｆｉディスプレイ接続のオーディオおよび音声バックチャネルを確立および制御すること
EP3005755B1 (en) Method and system for using wi-fi display transport mechanisms to accomplish voice and data communications
EP3130127B1 (en) Streaming control for real-time transport protocol
KR102127357B1 (ko) 디스플레이 세션에서 오프라인 참여를 위한 무선 통신 시스템 및 방법
US9357357B2 (en) Group owner selection for a peer-to-peer group
WO2021180202A1 (zh) 一种辅助链路补偿通话的系统、装置及芯片
CN106612445A (zh) 一种无线同屏音频通道的控制方法、发送设备及接受设备
KR20100121384A (ko) 홈 네트워크 상에서 ＵＰｎＰ를 이용하여 복수의 장치로 전화 관련 서비스를 제공하는 시스템 및 방법
CN102331727A (zh) 一种蓝牙媒体播放控制方法和相关装置
EP3227758B1 (en) Wireless docking system for audio-video relay
JP2008300954A (ja) 通信端末
TW201701711A (zh) 用於管理反向通道音訊通信期的技術
WO2016119563A1 (zh) 无线同屏系统中的反向传输音频的方法及装置
US11818185B2 (en) Audio streaming from host Bluetooth device to multiple receiving Bluetooth devices
CN112653925B (zh) 媒体播放的跨设备转移方法、系统、设备及存储介质
CN114786158A (zh) 双模蓝牙设备及蓝牙连接方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15879761

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15879761

Country of ref document: EP

Kind code of ref document: A1