CN113542857A - Screen projection method and device, projection equipment, screen projection playing equipment and storage medium - Google Patents
Screen projection method and device, projection equipment, screen projection playing equipment and storage medium Download PDFInfo
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- CN113542857A CN113542857A CN202010286230.4A CN202010286230A CN113542857A CN 113542857 A CN113542857 A CN 113542857A CN 202010286230 A CN202010286230 A CN 202010286230A CN 113542857 A CN113542857 A CN 113542857A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/44016—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving splicing one content stream with another content stream, e.g. for substituting a video clip
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4884—Data services, e.g. news ticker for displaying subtitles
Abstract
The embodiment of the invention provides a screen projection method, a screen projection device, a screen projection playing device and a storage medium, wherein in the screen projection process, a bullet screen message sent by a bullet screen sending device is obtained, the obtained bullet screen message is added into a video frame to be displayed through screen projection, and then the video frame containing the bullet screen message is played and displayed through the screen projection playing device, so that the bullet screen message is played and displayed together with the screen projection video frame on the screen projection playing device in a screen projection mode, the problem that the bullet screen message cannot be displayed through screen projection in the related screen projection technology is solved, and the user experience satisfaction can be improved.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a screen projection method and apparatus, a projection device, a screen projection playing device, and a storage medium.
Background
The connection is the hottest point of the current IT boundary, the connection and the cooperative interaction are established among different devices, the devices do not work independently any more, the capability of other devices can be utilized to exceed the capability of the hardware, and the cooperative work can be carried out by combining other devices. For example, in the life and work of people, various requirements of people are met through multi-screen cooperation of various devices such as a mobile phone, a television, a PC, a projector and the like. For example, the PPT content of the mobile phone is wirelessly projected to a television or a projection in a conference, the video program of the mobile phone is wirelessly projected to the television for watching when the user watches the video at home, and the screen of the mobile phone is wirelessly projected to a PC for use when the user works, so that the requirement of cooperative work of the mobile phone and the PC is met.
In the related screen projection technology, the miricast (miracast is the authentication name of a Wifi alliance to a device supporting the Wifi display function) and airplay (airplay is a wireless projection function on the apple iOS system, and can be used for projecting sound and video on an IPhone on a large screen, such as a computer and a television) can be adopted, the screen content of the projection device is sent to the screen projection device (a television, a projector and the like) through Wifi, and the screen projection device plays images according to the corresponding standard. The barrage is a common function of online video software, people can send text comments when watching online videos, and the text of the comments can roll to appear on a playing interface and is deeply favored by users; however, the current miricast and airplay specifications only can send the screen content of the projection device to the projection screen playing device for displaying, and cannot display the barrage message through the projection screen, which results in low user experience satisfaction.
Disclosure of Invention
The screen projection method, the screen projection device, the screen projection playing device and the storage medium provided by the embodiment of the invention solve the problem that the user experience satisfaction is low because the bullet screen message cannot be displayed through screen projection in the related screen projection technology.
In order to solve the above technical problem, an embodiment of the present invention provides a screen projection method, where the screen projection method includes:
in the screen projection process, acquiring a bullet screen message sent by bullet screen sending equipment;
adding the barrage message into a video frame to be displayed through screen projection;
and playing the video frame containing the barrage message through a screen projection playing device.
In order to solve the above technical problem, an embodiment of the present invention further provides a screen projection apparatus, where the screen projection apparatus includes:
the bullet screen acquiring module is used for acquiring bullet screen information sent by bullet screen sending equipment in the screen projection process, wherein the bullet screen information comprises at least one of characters and pictures;
the bullet screen processing module is used for adding the bullet screen information into a video frame to be displayed through screen projection;
and the screen projection processing module is used for playing the video frame containing the barrage message through screen projection playing equipment.
In order to solve the above technical problem, an embodiment of the present invention further provides a projection apparatus, including a first processor, a first memory, and a first communication bus, where the first communication bus is used to implement connection communication between the first processor and the first memory;
the first processor is configured to execute a first computer program stored in the first memory to implement the steps implemented by the projection device in the screen projection method as described above.
In order to solve the above technical problem, an embodiment of the present invention further provides a screen projection playing device, including a second processor, a second memory, and a second communication bus, where the second communication bus is used to implement connection communication between the second processor and the second memory;
the second processor is configured to execute a second computer program stored in the second memory to implement the steps implemented by the screen projection playing device in the screen projection method.
In order to solve the above technical problem, an embodiment of the present invention further provides a computer storage medium, where a first computer program is stored, and when the first computer program is executed by a first processor, the first computer program executes the steps implemented by the projection device in the screen projection method;
or the like, or, alternatively,
the computer storage medium stores a second computer program, and when the second computer program is executed by a second processor, the second computer program executes the steps implemented by the screen projection playing device in the screen projection method.
Advantageous effects
The embodiment of the invention provides a screen projection method, a screen projection device, a screen projection playing device and a storage medium, wherein in the screen projection process, a bullet screen message sent by a bullet screen sending device is obtained, the obtained bullet screen message is added into a video frame to be displayed through screen projection, and then the video frame containing the bullet screen message is played and displayed through the screen projection playing device, so that the bullet screen message is played and displayed together with the screen projection video frame on the screen projection playing device in a screen projection mode, the problem that the bullet screen message cannot be displayed through screen projection in the related screen projection technology is solved, and the user experience satisfaction can be improved.
Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic flow chart of a screen projection method according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of a device networking according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of a device networking according to a second embodiment of the present invention;
fig. 4 is a schematic diagram of a device networking according to a second embodiment of the present invention;
fig. 5 is a schematic diagram of a device networking according to a second embodiment of the present invention;
fig. 6 is a schematic diagram of device networking according to a second embodiment of the present invention;
fig. 7 is a schematic diagram of a bullet screen message input interface according to a second embodiment of the present invention;
fig. 8 is a schematic view of a screen projection processing flow provided in the second embodiment of the present invention;
fig. 9 is a schematic diagram of a bullet screen message processing flow according to a second embodiment of the present invention;
fig. 10 is a schematic view of another bullet screen message processing flow provided in the second embodiment of the present invention;
fig. 11 is a first schematic diagram of device networking according to a third embodiment of the present invention;
fig. 12 is a schematic diagram of a device networking according to a third embodiment of the present invention;
fig. 13 is a third schematic diagram of device networking according to a third embodiment of the present invention;
fig. 14 is a schematic diagram of a device networking according to a third embodiment of the present invention;
fig. 15 is a schematic diagram of device networking according to a third embodiment of the present invention;
fig. 16 is a schematic structural diagram of a screen projection apparatus according to a fourth embodiment of the present invention;
fig. 17 is a schematic structural diagram of a projection apparatus according to a fourth embodiment of the present invention;
fig. 18 is a schematic structural diagram of a bullet screen sending device according to a fourth embodiment of the present invention;
fig. 19 is a schematic structural view of a bullet screen transfer device according to a fourth embodiment of the present invention;
fig. 20 is a schematic structural diagram of another projection apparatus according to a fourth embodiment of the present invention;
fig. 21 is a schematic structural diagram of a screen projection playing device according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
in order to solve the problem that the user experience satisfaction is low due to the fact that the barrage message cannot be displayed through screen projection in the related screen projection technology, the embodiment provides a screen projection method. For ease of understanding, the present embodiment is further exemplified below with reference to the screen projection method shown in fig. 1.
S101: and in the screen projection process, acquiring the bullet screen message sent by the bullet screen sending equipment.
In the screen projection process in this embodiment, the projection device and the screen projection playing device establish a screen projection channel, and then the projection device converts the content to be screen projected into a corresponding video frame according to a corresponding screen projection standard, and sends the video frame to the screen projection playing device through the screen projection channel for playing and displaying. In this embodiment, the content to be projected on the projection device may be various content (for example, but not limited to, various local multimedia, text, game, and images captured by a camera) locally stored on the projection device, or may be various network online files (for example, but not limited to, network online multimedia, text, game, online video call, and the like) displayed on the projection device, and specific projected content may be flexibly set according to specific application requirements.
In addition, it should be understood that the projection device in this embodiment may be various smart devices supporting a projection screen function, for example, may include, but is not limited to, various smartphones, IPADs, and smart wearable devices. The screen-casting playing device in this embodiment may also be various devices capable of supporting screen-casting playing, and may include, but is not limited to, various smart televisions, PCs, and projectors, for example.
In this embodiment, the bullet screen sending device may be a device other than the projection device, for example, in some application scenarios, the bullet screen sending device may include devices of users who share and watch the projection device on site and/or remotely, the user may send a bullet screen message for the content to be watched through the bullet screen sending device, the sent bullet screen message may include but is not limited to at least one of text and pictures, and the bullet screen message sent by the bullet screen sending device may be acquired.
Optionally, in some application scenarios, in the screen projection process, the projection device itself may also locally generate a barrage message according to the corresponding barrage operation instruction, and the barrage message locally generated by the projection device may also be acquired and added to a video frame to be displayed through screen projection, and played through the screen projection playing device.
It should be understood that the capture process of the bullet screen message in this embodiment may be performed by the projection device, the screen projection device, or a combination of the two. For ease of understanding, the present embodiment is described below in terms of several application examples.
In an application example one of this embodiment, the acquiring process of the barrage message may be executed by the projection device, and in the application example one, the acquiring of the barrage message sent by the barrage sending device during the screen projection process by the projection device may include, but is not limited to, at least one of the following:
the first method is as follows: in the screen projection process, the projection equipment receives the bullet screen information sent by the bullet screen sending equipment through a first communication channel established between the projection equipment and at least one bullet screen sending equipment. In the first mode, a first communication channel can be directly established between the bullet screen sending device and the projection device, and the bullet screen sending device can directly send bullet screen messages to the projection device through the first communication channel. The first communication channel in the first mode may include, but is not limited to, a short-range wireless communication channel (e.g., Wifi, bluetooth, infrared, RFID, ZigBee, etc.), a cellular network communication channel, and a wired connection channel.
The second method comprises the following steps: the projection equipment receives the bullet screen information sent by the bullet screen transfer equipment through a second communication channel established between the projection equipment and the bullet screen transfer equipment in the process of screen projection, and the bullet screen information comprises bullet screen information sent to the bullet screen transfer equipment by the bullet screen sending equipment through a third communication channel between the projection equipment and the bullet screen transfer equipment and/or bullet screen information generated locally by the bullet screen transfer equipment. This mode two has set up bullet curtain transfer equipment, and this bullet curtain transfer equipment's number can set up one or more according to concrete application demand, and when setting up a plurality of bullet curtain transfer equipment, these a plurality of bullet curtain transfer equipment can be for transfer equipment at the same level, also can set up the multistage cascaded bullet curtain transfer equipment of a plurality of according to the demand. Meanwhile, the bullet screen transfer equipment can also send bullet screen messages or not according to application requirements, and when the bullet screen transfer equipment also sends the bullet screen messages, the bullet screen transfer equipment is also essentially bullet screen sending equipment. The types of the second communication channel and the third communication channel in this embodiment may be the same or different, and the second communication channel and the third communication channel may specifically include but are not limited to a short-range wireless communication channel (for example, Wifi, bluetooth, infrared, RFID, ZigBee, and the like), a cellular network communication channel, and a wired connection channel.
In the first application example, when the projection device generates a local barrage message, the projection device may directly acquire the locally generated barrage message.
In the first application example, the bullet screen message may also be obtained by combining the first and second manners, that is, a part of the bullet screen sending devices directly establishes the first communication channel with the projection device and directly sends the bullet screen message to the projection device, and a part of the bullet screen sending devices establishes the third communication channel with the bullet screen transfer device and sends the bullet screen message to the projection device through the bullet screen transfer device.
In an application example two of this embodiment, the acquiring process of the barrage message may be executed by an acquiring barrage sending device, and in the acquiring process of the barrage sending device in the second application example, the acquiring of the barrage message sent by the barrage sending device may include, but is not limited to, at least one of the following:
the first method is as follows: in the screen projection process, the screen projection playing device receives the bullet screen message sent by the bullet screen sending device through a fourth communication channel established between the screen projection playing device and at least one bullet screen sending device; in the first mode, a fourth communication channel can be directly established between the bullet screen sending device and the screen projection playing device, and the bullet screen sending device can directly send bullet screen messages to the screen projection playing device through the fourth communication channel. The fourth communication channel in the first embodiment may also include, but is not limited to, a short-range wireless communication channel (e.g., Wifi, bluetooth, infrared, RFID, ZigBee, etc.), a cellular network communication channel, and a wired connection channel.
The second method comprises the following steps: and in the screen projection process, the screen projection playing device receives the bullet screen message sent by the bullet screen transfer device through a fifth communication channel established between the screen projection playing device and the bullet screen transfer device, wherein the bullet screen message comprises a bullet screen message sent to the bullet screen transfer device by the bullet screen sending device through a sixth communication channel between the bullet screen transfer device and the bullet screen transfer device, and/or a bullet screen message generated locally by the bullet screen transfer device. This mode two has also set up bullet curtain transfer equipment, and this bullet curtain transfer equipment's number also can set up one or more according to concrete application demand, and when setting up a plurality of bullet curtain transfer equipment, these a plurality of bullet curtain transfer equipment can be for transfer equipment at the same level, also can set up the multistage cascaded bullet curtain transfer equipment of a plurality of according to the demand. Meanwhile, the bullet screen transfer equipment can also send bullet screen messages or not according to application requirements, and when the bullet screen transfer equipment also sends the bullet screen messages, the bullet screen transfer equipment is also essentially bullet screen sending equipment. The type of the fifth communication channel and the type of the sixth communication channel in the second embodiment may be the same or different, and the fifth communication channel and the sixth communication channel may specifically include, but are not limited to, a short-range wireless communication channel (e.g., Wifi, bluetooth, infrared, RFID, ZigBee, etc.), a cellular network communication channel, and a wired connection channel.
The third method comprises the following steps: in the screen projection process, the screen projection playing device receives a bullet screen message sent by the projection device through a seventh communication channel established between the screen projection playing device and the projection device, wherein the bullet screen message comprises a bullet screen message obtained by the projection device from a bullet screen sending device; and it should be understood that, in the third embodiment, the manner in which the projection device acquires the bullet screen message from the bullet screen sending device may adopt, but is not limited to, various manners in the first application example.
In the second application example, when the projection device generates a local barrage message, the projection device may directly send the locally generated barrage message to the screen projection playing device through a communication channel between the projection device and the screen projection playing device, or send the locally generated barrage message to the barrage relay device, and forward the barrage message to the screen projection playing device through the barrage relay device.
In the second application example, the barrage message may also be obtained by combining at least two of the first mode, the second mode, and the third mode, for example, the barrage message may be obtained by combining the first mode and the second mode, that is, a part of the barrage sending devices directly establishes a fourth communication channel with the screen projection playing device, and directly sends the barrage message to the projection device, and a part of the barrage sending devices establishes a sixth communication channel with the barrage transfer device, and sends the barrage message to the screen projection playing device through the barrage transfer device.
In another application example three of the present embodiment, the first application example and the second application example may be combined, that is, the screen projection playing device may obtain a part of the bullet screen message of the bullet screen sending device by a manner that is not limited to the manner in the application example two, and the projection device may obtain a part of the bullet screen message by a manner that is not limited to the manner in the application example one.
S102: and adding the acquired bullet screen message into a video frame to be displayed through screen projection.
As can be seen from the above examples, in this embodiment, the acquired barrage message may also be added to the video frame to be displayed by screen projection by the projection device, or the acquired barrage message may also be added to the video frame to be displayed by screen projection by the screen projection playing device, or the acquired barrage message may be added to the video frame to be displayed by screen projection by a combination of the two; wherein:
when the acquired barrage message is added into a video frame to be displayed through screen projection by the projection equipment, the projection equipment adds the acquired barrage message (which can include the barrage message acquired by the first application example and also can include the barrage message acquired from the screen projection playing equipment, and the screen projection playing equipment can acquire the barrage message by the second application example on the market) into the video frame to be projected, and sends the video frame to the screen projection playing equipment for playing through a screen projection channel between the video frame and the screen projection playing equipment;
when the screen projection playing device adds the acquired barrage message into a video frame to be displayed through screen projection, the screen projection playing device adds the acquired barrage message into the screen projection video frame received from the projection device, and then plays and displays the video frame;
when the acquired barrage message is added to a video frame to be displayed by screen projection by combining the projection device and the screen projection playing device, an exemplary combination manner may be, but is not limited to: the projection equipment can add the acquired barrage message into a video frame to be projected and then send the barrage message to the screen projection playing equipment through a screen projection channel between the projection equipment and the screen projection playing equipment, and the screen projection playing equipment adds the acquired barrage message into the video frame after receiving the video frame and then plays and displays the barrage message.
In this embodiment, when the projection device or the screen projection playing device adds the acquired barrage message into a video frame to be displayed by screen projection, at least one of the following methods may be used for processing:
adding the bullet screen information into a video frame to be displayed through screen projection according to the time sequence acquired by the bullet screen information;
adding the bullet screen message into a video frame to be displayed through screen projection according to the content priority of the content contained in the bullet screen message;
adding the bullet screen message into a video frame to be displayed through screen projection according to the user priority of a user sending the bullet screen message;
and adding the bullet screen message into a video frame to be displayed through screen projection based on a weighting processing result obtained by weighting calculation by combining at least two of the time sequence, the content priority and the user priority of the bullet screen message.
It should be understood that, in this embodiment, one bullet screen message may be added to one frame of video frame, and may also be added to multiple frames of video frames according to specific application requirements.
Optionally, in this embodiment, when the acquired barrage message is added to a video frame to be displayed by screen projection by a combination of the projection device and the screen projection playing device, a barrage message filtering rule may be set according to a specific application scene requirement (for example, a blacklist may be set, a barrage message sent by a user in the blacklist is filtered so as not to be displayed, and a corresponding filtering keyword may also be set for a content that needs to be kept secret or a content that cannot be displayed, such as a content that relates to yellow or black), and after the received barrage message is filtered by the filtering rule, the filtered barrage message is added to the video frame.
S103: and playing the video frame containing the barrage message through the screen projection playing equipment.
When the acquired barrage message is added into a video frame to be displayed through screen projection by the projection equipment, the video frame containing the barrage message is sent to the screen projection playing equipment by the projection equipment through a screen projection channel between the projection equipment and the screen projection playing equipment for playing.
When the acquired barrage message is added into the video frame to be displayed through screen projection by the screen projection playing device, or the acquired barrage message is added into the video frame to be displayed through screen projection by the combination of the projection device and the screen projection playing device, the screen projection playing device plays the video frame containing the barrage message.
Therefore, by the screen projecting method provided by the embodiment, in the process of projecting the screen to the screen projecting playing device by the projecting device, the pop-up screen message sent by the user sharing the screen projecting content through at least one of the projecting device, the pop-up screen sending device and the pop-up screen transfer device can be flexibly acquired through the projecting device or the screen projecting playing device, and after the pop-up screen message is added into the video frame displayed through the screen projecting, the video frame is played and displayed through the screen projecting playing device, so that the pop-up screen message is displayed through the screen projecting, the user experience satisfaction is improved, the implementation mode is simple and flexible, the cost is low, and the universality is good. For example, by the screen projection method provided by this embodiment, when screen projection contents are shared, multiple persons can participate in interaction, and interactive barrage messages (characters, pictures, and the like) can be directly projected on the screen by the screen projection method provided by this embodiment. For example, a meeting, meeting participants can leave messages and make comments; for example, on the scene of a company meeting year, employees can leave messages on a screen and interact with the screen, so that the activity atmosphere is increased; when family and friends throw the screen together to watch the film, sending an expression bag to increase atmosphere; and the user experience satisfaction is greatly improved.
Example two:
on the basis of the foregoing embodiments, the present embodiment exemplifies a first application example in the foregoing embodiments, in combination with specific several networking application scenarios.
In this embodiment, the projection device, the screen projection playing device and the barrage sending device can all have Wifi functions; some example networking approaches may include, but are not limited to:
referring to the first networking mode shown in fig. 2, in the first networking mode, a screen projection channel may be established between the projection device 1 and the screen projection playing device 2 through, but not limited to, miricast and airplay standards, so as to implement screen projection. The projection device 1 has a Wifi hotspot function, each bullet screen sending device 3 establishes a communication channel for sending bullet screen messages with the projection device 1 through the Wifi hotspot, sends the bullet screen messages to the projection device 1 through the communication channel, and can carry information (such as device identification information or user information) of the bullet screen sending device according to requirements during sending.
Referring to the networking mode two shown in fig. 3, in the networking mode two, a screen projection channel may be established between the projection device 1 and the screen projection playing device 2 through, but not limited to, miricast and airplay standards, so as to implement screen projection. And a Wifi hotspot device 5 is arranged in the networking mode II, and each bullet screen sending device 3 establishes a communication channel for sending bullet screen messages with the projection device 1 through the Wifi hotspot device 5 and sends the bullet screen messages to the projection device 1 through the communication channel.
Please refer to a third networking mode shown in fig. 4, in the third networking mode, the projection device 1 has both Wifi and bluetooth functions, some bullet screen sending devices 3 may establish a communication channel for sending a bullet screen message with the projection device 1 through the Wifi communication, and other bullet screen sending devices 3 may establish a communication channel for sending a bullet screen message with the projection device 1 through the bluetooth communication.
Please refer to the networking mode four shown in fig. 5, in the networking mode four, a primary bullet screen transfer device 4 is disposed below the projection device 1, the bullet screen sending device 3 may establish a communication channel for sending the bullet screen message with the bullet screen transfer device 4 through Wifi communication or bluetooth communication, etc., and the bullet screen transfer device 4 may also establish a communication channel for sending the bullet screen message with the projection device 1 through bluetooth communication or Wifi communication, etc.
Please refer to a fifth networking mode shown in fig. 6, in the fifth networking mode, two bullet screen relay devices 4 at one level are disposed below the projection device 1, the bullet screen sending device 3 may establish a communication channel for sending the bullet screen message with the corresponding bullet screen relay device 4 through Wifi communication or bluetooth communication, etc., and each bullet screen relay device 4 may also establish a communication channel for sending the bullet screen message with the projection device 1 through bluetooth communication or Wifi communication, etc.
As can be seen, in the above-described several networking scenarios, the number of the projection device 1 and the screen projection playing device 2 may be 1, and the number of the bullet screen sending device 3 and the bullet screen transfer device 4 may be several. Based on protocols such as Wifi Direct (the Wifi Direct standard means that devices in a wireless network are allowed to be connected with each other without a wireless router, and wireless devices are allowed to be connected in a point-to-point manner), the projection device 1 discovers the screen projection playing device 2 and establishes screen projection connection, and the projection device 1 sends and projects screen content (which can be same screen content or specific image, such as WORD application full screen playing content, and the like, and can be flexibly set) to the screen projection playing device 2 (by using technologies such as Wifi display and airplay). The barrage sending device 3 and the projection device 1 or the barrage transfer device 4 establish a communication channel through bluetooth or Wifi, the barrage sending device 3 can send barrage content (pictures or characters and the like) to the projection device 1 or the barrage transfer device 4, the barrage transfer device 4 forwards the barrage to the projection device 1, the projection device 1 adds the received barrage content (picture characters) (for example, the received barrage message such as the received characters and the pictures can be added in a drawing mode, for example, the received barrage message can be superposed on the screen projection content as a watermark) to a screen projection video frame, the screen projection video frame is transmitted to the screen projection playing device 2 through a streaming media protocol, and the screen projection playing device 2 can directly play and display the received barrage content. Referring to fig. 7, the interface for sending the bullet screen on the projection device 1, the bullet screen sending device 3, and the bullet screen transfer device 4 may include a content input box 50 and an expression input window 51, and it should be understood that the specific setting of the bullet screen input interface window may be flexibly set according to the requirement, and is not limited to the interface shown in fig. 7.
For the convenience of understanding, the following description of the present embodiment is made with reference to the flow diagrams of the above links.
Please refer to the screen projection processing flow shown in fig. 8, which includes:
s801: the screen projection playing device supports miricast, finds the other side and establishes a group based on wifi direct, and establishes a streaming media transmission channel (namely a screen projection channel) through Rtsp coordination.
S802: the screen projection user selects projection content to project the screen on the projection equipment, and the screen projection user can be screen content (projection on the same screen) of the equipment, and can also be specific content, such as ppt playing content.
S803: whether the projection equipment acquires the bullet screen message or not can be locally generated by the projection equipment or sent by bullet screen sending equipment or transit equipment; if yes, go to S804; if not, go to S805.
S804: the projection equipment draws the bullet screen contents (characters and pictures) on the projection screen content image.
One bullet screen content can be continuously drawn on a plurality of projected screen content images according to requirements (for example, if a video is 30 frames/second, and a bullet screen is continuously displayed for 5 seconds, the bullet screen content needs to be drawn on continuous 150 frames).
S805: the casting device makes the projected screen content image into a streaming media transmission packet (RTP packet).
S806: the projection equipment transmits the stream media RTP packet to the screen projection playing equipment through an RTP protocol.
S807: and the screen projection playing equipment receives the RTP packet, plays the RTP packet and displays the RTP packet on a screen.
Please refer to a bullet screen message processing flow shown in fig. 9, which corresponds to the networking manner shown in fig. 2 to 4, and includes:
s901: the bullet screen sending equipment and the projection equipment are connected based on Bluetooth or Wifi; the projection device serves as a receiver, and the bullet screen sending device serves as a sender.
S902: the user inputs bullet screen content, which can be pictures and characters, in bullet screen sending equipment. Of course, the casting device itself may also generate local individual messages on demand.
S903: and the bullet screen sending equipment sends the bullet screen message to the projection equipment.
Please refer to another bullet screen message processing flow shown in fig. 10, which corresponds to the networking manner shown in fig. 5 to 6, and includes:
s1001: the bullet screen sending device and the bullet screen transfer device are connected based on Bluetooth or wifi; the bullet screen transfer equipment and the projection equipment are connected based on Bluetooth or wifi.
S1002: the user inputs bullet screen content, which can be pictures and characters, in bullet screen sending equipment. The projection equipment and the bullet screen transfer equipment can also generate local independent messages according to requirements.
S1003: and the bullet screen sending equipment sends the bullet screen content to the bullet screen transfer equipment.
S1004: and the bullet screen transfer equipment sends the bullet screen content to the projection equipment.
Example three:
on the basis of the above embodiments, the present embodiment exemplifies the second application example in the above embodiments by combining with specific several networking application scenarios.
In this embodiment, the projection device, the screen projection playing device and the barrage sending device can all have Wifi functions; some example networking approaches may include, but are not limited to:
referring to the first networking mode shown in fig. 11, in the first networking mode, a screen projection channel may be established between the projection device 1 and the screen projection playing device 2 through, but not limited to, miricast and airplay standards, so as to implement screen projection. The screen projection playing device 2 has a Wifi hotspot function, each bullet screen sending device 3 establishes a communication channel for sending bullet screen messages with the screen projection playing device 2 through the Wifi hotspot, sends the bullet screen messages to the screen projection playing device 2 through the communication channel, and can carry information (such as device identification information or user information) of the bullet screen sending device according to requirements during sending. The projection device 1 can also generate a barrage message according to the requirement of the projection device and send the barrage message to the projection device 2.
Please refer to the networking mode two shown in fig. 12, in the networking mode two, a primary barrage transfer device 4 is disposed below the screen projection playing device 2, the barrage sending device 3 may establish a communication channel for sending the barrage message with the barrage transfer device 4 through Wifi communication or bluetooth communication, etc., and the barrage transfer device 4 may also establish a communication channel for sending the barrage message with the screen projection playing device 2 through bluetooth communication or Wifi communication, etc. The projection device 1 can also generate a barrage message according to the requirement of the projection device and send the barrage message to the projection device 2.
Please refer to the networking mode three shown in fig. 13, which is mainly different from the networking mode two described above, in that the projection device 1 may also generate a bullet screen message according to its own requirement and send the bullet screen message to the bullet screen relay device 4, and send the bullet screen message to the screen projection playing device 2 through the bullet screen relay device 4.
Please refer to the networking mode four shown in fig. 14, which is mainly different from the networking modes two and three described above, in that a plurality of stages of bullet screen transfer devices 4 are disposed below the screen projection playing device 2 (of course, a plurality of stages of bullet screen transfer devices 4 may also be disposed), the bullet screen sending device 3 may establish a communication channel for sending the bullet screen message with the corresponding bullet screen transfer device 4 through Wifi communication or bluetooth communication, etc., and each bullet screen transfer device 4 may also establish a communication channel for sending the bullet screen message with the screen projection playing device 2 through bluetooth communication or Wifi communication, etc.
Referring to the networking mode five shown in fig. 15, in the networking mode five, a screen projection channel may be established between the projection device 1 and the screen projection playing device 2 through, but not limited to, miricast and airplay standards, so as to implement screen projection. The screen projection playing device 2 has a Wifi hotspot function, each bullet screen sending device 3 establishes a communication channel for sending bullet screen messages with the projection device 1 through the Wifi hotspot, sends the bullet screen messages to the projection device 1 through the communication channel, and can carry information (such as device identification information or user information) of the bullet screen sending device according to needs during sending, the projection device 1 can also generate bullet screen messages according to the needs, and sends the obtained bullet screen messages to the screen projection playing device 2.
As can be seen, in the above-described several networking scenarios, the number of the projection device 1 and the screen projection playing device 2 may be 1, and the number of the bullet screen sending device 3 and the bullet screen transfer device 4 may be several. Based on protocols such as Wifi Direct (the Wifi Direct standard refers to that devices in a wireless network are allowed to be connected with each other without a wireless router, and wireless devices are allowed to be connected in a point-to-point manner), the projection device 1 discovers the screen projection playing device 2 and establishes screen projection connection, and the projection device 1 sends and projects screen content (which can be same screen content or specific images, such as wps application full screen playing content, and the like, and can be flexibly set) to the screen projection playing device 2 (by using technologies such as Wifi display and airplay). The barrage sending device 3, the projection device 1, or the barrage transfer device 4 may establish a communication channel for sending a barrage message with the screen projection device 2 through bluetooth or Wifi, the barrage sending device 3 may send barrage content (pictures or characters, etc.) to the screen projection device 2, the projection device 1, or the barrage transfer device 4, the barrage transfer device 4 forwards the barrage to the screen projection device 2, the screen projection device 2 adds the received barrage content (pictures and characters) (for example, the received barrage message such as the received words and pictures may be added in a drawing manner, for example, the received barrage message may be superimposed as a watermark to the screen projection content) onto a screen projection video frame received from the projection device 1, and then the screen projection video frame is directly played and displayed.
Example four:
the present embodiment also provides a screen projection device, which can be disposed in a projection device or a screen projection playing device, please refer to fig. 16, which includes but is not limited to:
the bullet screen obtaining module 1601 is configured to obtain a bullet screen message sent by a bullet screen sending device in a screen shooting process, where the bullet screen message may include, but is not limited to, at least one of a character and a picture. The specific acquiring method of the bullet screen acquiring module 1601 may adopt, but is not limited to, the bullet screen acquiring methods shown in the foregoing embodiments, and is not described herein again.
A bullet screen processing module 1602, configured to add the bullet screen message acquired by the bullet screen acquiring module 1601 into a video frame to be displayed through screen projection; for a specific processing manner, reference is made to the above embodiments, and details are not described herein.
And a screen projection processing module 1603, configured to play the video frame containing the bullet screen message by a screen projection playing device. Wherein the content of the first and second substances,
when the screen projection device is disposed in the projection apparatus, the screen projection processing module 1603 is configured to send the video frame containing the barrage message to the screen projection playing apparatus for playing by the screen projection playing apparatus;
when the screen projection device is installed in the screen projection playing device, the screen projection processing module 1603 is configured to directly play and display the video frame containing the barrage message.
It should be understood that the functions of the bullet screen acquiring module 1601, the bullet screen processing module 1602, and the screen projection processing module 1603 described above can be implemented by, but are not limited to, a processor in a projection device or a screen projection playing device.
For example, taking the screen projection device disposed in the projection device, the projection device is a mobile intelligent terminal such as a mobile phone as an example, please refer to fig. 17, and the projection device may specifically include a bullet screen management module 1701 (i.e., a bullet screen obtaining module 1701), a screen projection drawing module 1702 (i.e., a bullet screen processing module), Wifi DispPlay 1703 (i.e., a screen projection processing module Wifi DispPlay), and Wifi Direct 1704. The projection equipment can discover and connect with the projection screen playing equipment based on wifi direct 1704; the bullet screen management module 1701 may implement, but is not limited to, connection with a bullet screen sending device and receiving bullet screen content, may have a bullet screen stack for storing bullet screen messages, and gives the bullet screen stack to the screen-submitting drawing module 1702 according to the time, content priority, user priority, etc.; the screen-casting drawing module 1702 can realize, but is not limited to, drawing the barrage content (text or picture) onto the screen-casting content image; and the Wifi display module 1703 packages the screen projection drawing image into a video stream and sends the video stream to the screen projection playing device. Of course, the screen projection device may also be disposed in the screen projection playing device, and will not be described herein again.
In an example of this embodiment, please refer to fig. 18 for a bullet screen sending device, which may include but is not limited to a first communication module 1800, a bullet screen generating module 1801, and a bullet screen sending module 1802, where the first communication module 1800 is connected to a projection device, a bullet screen transfer device, or a projection screen playing device through bluetooth or wifi to establish a communication channel; the bullet screen generating module 1801 is configured to automatically generate a bullet screen message including characters or pictures according to user input or according to a set rule; the bullet screen sending module 1802 sends the bullet screen message to the projection device, the bullet screen transfer device or the screen projection playing device through the communication channel.
In an example of this embodiment, please refer to fig. 19 for a bullet screen transit device, which may include but is not limited to a second communication module 1900, a bullet screen generating module 1901, and a bullet screen forwarding module 1902, where the second communication module 1900 is connected with a projection device or a screen projection playing device through bluetooth or wifi to establish a communication channel; the bullet screen generating module 1901 is optionally configured to automatically generate a bullet screen message including characters or pictures according to user input or according to a set rule, and send the bullet screen message to the bullet screen forwarding module 1902, where the bullet screen forwarding module 1902 is configured to send the bullet screen message sent by the bullet screen generating module 1901 or the bullet screen sending device to the projection device or the screen projection playing device through the communication channel. Therefore, the bullet screen transfer equipment can play a transfer role, reduce the workload of the projection equipment, can be accessed into more bullet screen equipment, and can increase the distance between the bullet screen equipment and the projection equipment.
The present embodiment further provides a projection apparatus, please refer to fig. 20, which includes a first processor 2001, a first memory 2002 and a first communication bus 2003, wherein the first communication bus 2003 is used for realizing connection communication between the first processor 2001 and the first memory 2002; the first processor is configured to execute the first computer program stored in the first memory to implement the steps performed by the projection device in the screen projection method as shown in the above embodiments.
The present embodiment further provides a screen projection playing device, please refer to fig. 21, which includes a second processor 2101, a second memory 2102 and a second communication bus 2103, where the second communication bus 2103 is used to implement connection communication between the second processor 2101 and the second memory 2102; the second processor 2101 is configured to execute a second computer program stored in the second memory 2102 to implement the steps performed by the screen-casting playing apparatus in the screen-casting method as described in the foregoing embodiments.
The embodiment also provides a computer storage medium, where a first computer program is stored, and when the first computer program is executed by a first processor, the first computer program is used to implement the steps executed by the projection device in the screen projection method shown in the above embodiments;
or the like, or, alternatively,
the computer storage medium stores a second computer program, and the second computer program is executed by a second processor to implement the steps executed by the screen-casting playing device in the screen-casting method as described in the foregoing embodiments.
The computer-readable storage media in this embodiment include volatile or nonvolatile, removable or non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, computer program modules or other data. Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other Memory technology, CD-ROM (Compact disk Read-Only Memory), Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer.
The present embodiment further provides a first computer program (or first computer software), which may be distributed on a computer readable medium and executed by a computing device (for example, including but not limited to the millimeter wave communication unit) to implement the steps executed by the projection apparatus in the screen projection method shown in the above embodiments; and in some cases at least one of the steps shown or described may be performed in an order different than that described in the embodiments above.
The present embodiment further provides a second computer program (or called second computer software), which may be distributed on a computer-readable medium and executed by a computing device (for example, including but not limited to the millimeter wave communication unit) to implement the steps executed by the screen-casting playing apparatus in the screen-casting method shown in the foregoing embodiments; and in some cases at least one of the steps shown or described may be performed in an order different than that described in the embodiments above.
The present embodiments also provide a computer program product comprising a computer readable means on which any of the computer programs as set out above is stored. The computer readable means in this embodiment may include a computer readable storage medium as shown above.
It will be apparent to those skilled in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software (which may be implemented in computer program code executable by a computing device), firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
In addition, communication media typically embodies computer readable instructions, data structures, computer program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to one of ordinary skill in the art. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (11)
1. A screen projection method, the screen projection method comprising:
in the screen projection process, acquiring a bullet screen message sent by bullet screen sending equipment;
adding the barrage message into a video frame to be displayed through screen projection;
and playing the video frame containing the barrage message through a screen projection playing device.
2. The screen projection method of claim 1, wherein the acquiring of the bullet screen message sent by the bullet screen sending device in the screen projection process comprises at least one of the following:
in the screen projection process, the projection equipment receives a bullet screen message sent by bullet screen sending equipment through a first communication channel established between the projection equipment and at least one bullet screen sending equipment;
in the screen projection process, the projection equipment receives the bullet screen message sent by the bullet screen transfer equipment through a second communication channel established between the projection equipment and the bullet screen transfer equipment, wherein the bullet screen message comprises a bullet screen message sent by the bullet screen sending equipment to the bullet screen transfer equipment through a third communication channel between the bullet screen transfer equipment and/or a bullet screen message generated locally by the bullet screen transfer equipment.
3. The screen-casting method of claim 1, wherein the adding the barrage message to the video frame to be displayed by screen casting comprises:
the projection equipment adds the barrage message into a video frame to be projected;
the playing the video frame containing the barrage message through a screen projection playing device comprises:
and the projection equipment sends the video frame containing the barrage message to the screen projection playing equipment for playing through a screen projection channel between the projection equipment and the screen projection playing equipment.
4. The screen projection method of claim 1, wherein the acquiring of the bullet screen message sent by the bullet screen sending device in the screen projection process comprises at least one of the following:
in the screen projection process, the screen projection playing device receives the bullet screen message sent by the bullet screen sending device through a fourth communication channel established between the screen projection playing device and at least one bullet screen sending device;
in the screen projection process, the screen projection playing device receives a bullet screen message sent by the bullet screen transfer device through a fifth communication channel established between the screen projection playing device and the bullet screen transfer device, wherein the bullet screen message comprises a bullet screen message sent to the bullet screen transfer device by the bullet screen sending device through a sixth communication channel between the bullet screen sending device and the bullet screen transfer device, and/or a bullet screen message locally generated by the bullet screen transfer device;
and in the screen projection process, the screen projection playing device receives the bullet screen message sent by the projection device through a seventh communication channel established between the screen projection playing device and the projection device, wherein the bullet screen message comprises the bullet screen message obtained by the projection device from the bullet screen sending device.
5. The screen-casting method of claim 1, wherein the adding the barrage message to the video frame to be displayed by screen casting comprises:
adding the barrage message into a video frame received from the projection equipment through a screen projection channel by the screen projection playing equipment;
the playing the video frame containing the barrage message through a screen projection playing device comprises:
and the screen projection playing equipment plays the video frame containing the bullet screen message.
6. The screen projection method of any one of claims 1-5, wherein the method further comprises:
in the screen projection process, acquiring a bullet screen message locally generated by projection equipment;
adding the barrage message locally generated by the projection equipment into a video frame to be displayed through screen projection;
and playing the video frame containing the barrage message through a screen projection playing device.
7. The screen projection method of any one of claims 1 to 5, wherein the barrage message comprises at least one of text and pictures, and the adding the barrage message to the video frame to be displayed by screen projection comprises at least one of:
adding the bullet screen information into a video frame to be displayed through screen projection according to the time sequence acquired by the bullet screen information;
adding the bullet screen message into a video frame to be displayed through screen projection according to the content priority of the content contained in the bullet screen message;
and adding the bullet screen message into a video frame to be displayed through screen projection according to the user priority of the user sending the bullet screen message.
8. A screen projection device, comprising:
the bullet screen obtaining module is used for obtaining bullet screen information sent by bullet screen sending equipment in the screen projection process;
the bullet screen processing module is used for adding the bullet screen information into a video frame to be displayed through screen projection;
and the screen projection processing module is used for playing the video frame containing the barrage message through screen projection playing equipment.
9. A projection device comprising a first processor, a first memory and a first communication bus for enabling connection communication between the first processor and the first memory;
the first processor is configured to execute a first computer program stored in the first memory to implement the steps of the screen projection method according to any one of claims 1-3 and 6-7.
10. The screen projection playing device is characterized by comprising a second processor, a second memory and a second communication bus, wherein the second communication bus is used for realizing connection communication between the second processor and the second memory;
the second processor is configured to execute a second computer program stored in the second memory to implement the steps of the screen projection method according to any one of claims 1 and 4-7.
11. A computer storage medium, characterized in that it stores a first computer program which, when executed by a first processor, performs the steps of the screen projection method according to any one of claims 1-3, 6-7;
or the like, or, alternatively,
the computer storage medium stores a second computer program which, when executed by a second processor, performs the steps of the screen projection method according to any one of claims 1 and 4 to 7.
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