CN104038741A - Projection method for video data - Google Patents
Projection method for video data Download PDFInfo
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- CN104038741A CN104038741A CN201410271561.5A CN201410271561A CN104038741A CN 104038741 A CN104038741 A CN 104038741A CN 201410271561 A CN201410271561 A CN 201410271561A CN 104038741 A CN104038741 A CN 104038741A
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Abstract
The invention discloses a projection method for video data, which is applied to terminal equipment with an Airplay wireless technology. The terminal equipment comprises shooting equipment and projection equipment, wherein the shooting equipment and the projection equipment are conducted for HTTP (Hyper Text Transport Protocol) initial link through the Airplay wireless technology, the collected video data is encoded in a primary resolution ratio way through the shooting equipment, a POST (Power On Self Test) method of the HTTP protocol is utilized to transmit the video data to the projection equipment, and then the projection motion is carried out after the video data is decoded by the projection equipment. According to the projection method, the wireless projection with high definition and high resolution ratio can be achieved by the Airplay wireless technology without the need of wiring, and the projection method is convenient to use.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of method of by Airplay wireless technology, the real time video image data that photograph being carried out to projection.
Background technology
Airplay is the wireless technology of being released by American apple company, the ios device of Apple has the function of Airplay, this function can by the multi-medium datas such as the video in ios device, music and picture by WLAN be pushed to that the screen with Airplay function receiving terminal is larger, on demonstration and the better audio-visual equipment of acoustics.For example: iphone and ipad and apple TV have Airplay function, iphone and ipad can utilize Airplay function that multi-medium data is pushed to apple TV output by LAN.
Along with the development of technology, Airplay wireless technology has not been the exclusive of ios device, other device operating system also can use, as: Android system is the handheld equipment operating system that current number of users is maximum, had at present part software support Airplay wireless technology, this is a message favourable for user.
No matter in above-mentioned be ios device or Android equipment, the display screen size that it has is certain, in daily work, cannot use it as the display device in meeting or discussion, carry out the demonstration of data but connect projector equipment by computer equipment, in existing technology, also can projector equipment be connected to mobile phone or other portable equipments by the mode of patchcord, data in mobile phone or portable equipment is carried out to projection by projector equipment, above-mentioned mode all needs to carry out wired connection, and it is very inconvenient to cause in the process of operation.Although can realize the transmission of the mirror image of screen and video, picture by Airplay wireless technology, but what transmit in the mirrored procedure of screen is only low-resolution image after treatment, cannot realizes high-quality to photographing in real time or high-resolution original image or video and transmit.
Summary of the invention
The object of the present invention is to provide a kind of projecting method of video data, can not the initial data of the real time video image data of shooting be carried out to projection by Airplay wireless technology to solve in prior art ios device or non-ios device.
For reaching above-mentioned purpose, the invention provides a kind of projecting method of video data, be applied on the terminal equipment with Airplay wireless technology, comprise capture apparatus and projector equipment, step is as follows:
1) capture apparatus, by Airplay wireless technology search information, obtains the facility information of supporting Airplay wireless technology;
2) with search and the projector equipment of selected support Airplay wireless technology carries out socket and communicates by letter, set up HTTP initialization link;
3) camera of capture apparatus carries out the collection of real time video data information;
4) the above-mentioned video data collecting is carried out to data encoding processing, video is kept to the coding processing of original image resolution, ensure the high definition of coding video data after treatment;
5) give above-mentioned selected projector equipment by Airplay wireless technology by video data transmitting after treatment;
6) projection action will be carried out after the video data decoding receiving.
Preferably, above-mentioned steps 1) in, capture apparatus uses carry out _ Airplay.tcp of Bonjour network service local area network service search, finds after respective service, obtains the facility information that this service correspondence is returned, and comprises device id, IP address and MAC Address.
Preferably, above-mentioned steps 1) in _ Airplay.tcp service is by the form transmission of broadcast, and the equipment of any support Airplay wireless technology in LAN all can search above-mentioned broadcast.
Preferably, above-mentioned steps 2) in, capture apparatus finds the information of the projector equipment that will link in the facility information list of the support Airplay wireless technology of obtaining, by NetService network service initialization link information and carry out socket with selected projector equipment and communicate by letter, use Transmission Control Protocol to carry out transfer of data, carry out initialization link by http protocol.
Preferably, above-mentioned steps 5) in, capture apparatus encapsulates video data after treatment, adds necessary HTTP data packet head, uses the POST method transmission data of http protocol.
The projecting method of a kind of video data of the present invention, the camera that utilization has on the capture apparatus (as: smart mobile phone, panel computer etc.) of Airplay wireless technology carries out video data acquiring to carrying out the image information of projection, coding video data processing after collection, and ensure the initial parameter of video data, video data is after treatment transferred to projector equipment by Airplay wireless technology, after resolving, the video data receiving is carried out to projection.Realize the high definition projection of capture video image, improved the demand of user to projection, perfect wireless display technology.
Beneficial effect of the present invention:
By the projecting method of a kind of video data of the present invention, can realize the transmission of video images between capture apparatus (as: smart mobile phone, panel computer etc.) and projector equipment, reach high definition/high-resolution wireless display by Airplay wireless technology, without wiring, improve the convenience that uses projecting function in daily life and work, shadow casting technique has been obtained perfect further.
Brief description of the drawings
Fig. 1 illustrates the flow chart of steps of the projecting method of a kind of video data of the present invention.
Embodiment
For the ease of those skilled in the art's understanding, below in conjunction with embodiment and accompanying drawing, the present invention is further illustrated, and the content that execution mode is mentioned not is limitation of the invention.
Shown in Fig. 1, the projecting method of a kind of video data of the present invention, is applied on the terminal equipment with Airplay wireless technology, and in the first embodiment, this terminal equipment is selected IOS mobile phone and projecting apparatus, specifically comprises that step is as follows:
Step 101:IOS mobile phone, by Airplay wireless technology search information, obtains the facility information of supporting Airplay wireless technology; Be embodied in: user operates IOS mobile phone and uses carry out _ Airplay.tcp of Bonjour network service local area network service search, to search projecting apparatus, find after respective service, obtain the facility information that this service correspondence is returned, comprise each device id, IP(Internet Protocol) address and MAC(Media Access Control) address; Above-mentioned Bonjour network service, also referred to as zero configuration networking, can find computer, equipment and service in IP network automatically.Bonjour uses the IP agreement of industrial standard to allow automatic device discovery each other, and does not need to input IP address or configuration DNS server;
Select the capture apparatus such as Android mobile phone or panel computer during when above-mentioned terminal equipment, above-mentioned Bonjour network service (is supported in other words the Linux platform of POSIX) on Android platform, and it is the program of a mdnsd by name; Select the capture apparatus such as Windows mobile phone or panel computer during when above-mentioned terminal equipment, on windows platform, it will generate a background program mdnsresponder.
Above-mentioned _ Airplay.tcp service is by the form transmission of broadcast, and the equipment of any support Airplay wireless technology in LAN all can search above-mentioned broadcast.
Step 102: with search and the projecting apparatus of selected support Airplay wireless technology carries out socket and communicates by letter, set up HTTP initialization link; Be embodied in: in IOS mobile phone searching to facility information list in find the projecting apparatus that need to link, by NetService network service initialization link information and carry out socket with selected projecting apparatus and communicate by letter, use Transmission Control Protocol to carry out transfer of data, carry out initialization link by http protocol.
The camera of step 103:IOS mobile phone carries out the collection of real time video data information; Be embodied in: the camera that IOS handset starting is provided with in it, by camera to needing the picture of projection to carry out the real-time shooting, collecting of video data; In the process gathering, the switching that realizes different cameras in this IOS mobile phone can be set by IOS mobile phone, and gather the action such as part amplification of picture, so can see more clearly the concrete position that needs the data of projection or article, in said process, the collection of video data information is similar to the camera function of IOS mobile phone in prior art, only needs the camera of IOS mobile phone to aim at and need in the data or article of projection; Preferably, in the photographed screen of IOS mobile phone, also can enable edit pattern, i.e. any amendment editor on the image collecting, as: carrying out word annotation, local flag, the amendment of shape/word, change color, wipe at position, illustration etc.
Step 104:IOS mobile phone carries out data encoding processing to the above-mentioned real time video data collecting, carry out H264 coding (also can select H.263, H.263+, the video encoding standard such as MPEG-4) in other embodiment, video is kept to the coding processing of original image resolution, ensure the high definition of coding video data after treatment, and the concrete coding of the video data collecting is processed as follows:
If a. do not add figure layer in above-mentioned steps 103, the video data collecting does not carry out editing and processing:
(1) video data that first camera is taken can be with the form of the buffering area person that returns to video monitor, and listener can constantly be obtained screen buffer data;
(2) first from the buffer data of camera, obtain some essential informations of video, as video pixel size, video image direction, frame etc., by these data according to video encoding standard encode (using H.264 video encoding standard) process.
If b. above-mentioned steps 103 adds figure layer, the video data collecting carries out editing and processing:
(1) video council that first camera is taken is with the form of the buffering area person that returns to video monitor, listener can constantly be obtained screen buffer data, create a new monitoring service simultaneously, the drawing figure layer newly adding on IOS mobile phone screen is monitored, can constantly be obtained like this view data of the drawing figure layer on IOS mobile phone;
(2) first some essential informations of obtaining video from the buffer data of camera, as video pixel size, video image direction, frame etc., then the view data of constantly obtaining from IOS mobile phone is processed, the figure tomographic image data that these are obtained from IOS mobile phone become the same specification of figure tomographic image data that same camera listens to, as time frame, the direction of image etc. of the size of image pixel (carry out from newly playing up if inconsistent, change size), image;
(3) data after treatment that the drafting figure layer of buffer data camera being obtained and IOS mobile phone obtains merge, then by these data according to the processing of encoding of video encoding standard H.264.
The listener of mentioning in above-mentioned steps is to observe an agency agreement of camera, and the listener that this agreement is set as camera data can constantly obtain the view data that camera is taken.
Step 105: give above-mentioned selected projecting apparatus by video data transmitting after treatment by Airplay wireless technology; IOS mobile phone encapsulates video data after treatment, adds necessary HTTP data packet head, uses the POST method transmission data of http protocol, also can select rtsp real-time streaming protocol to transmit.
Above-mentioned HTTP data packet head comprises: http protocol version, link type, data length, whether use agency and wire data type etc.
Step 106: projecting apparatus is decoded the video data that receives according to decoding process H.264, and decoded video data is carried out to projection action; In projecting apparatus, can be provided with various video decoding standard, and select the decoding standard adopting to decode according to the coded system of the video data wrapper receiving.
In above-described embodiment, IOS mobile phone can by its camera collection to vedio data be transferred to projecting apparatus by Airplay wireless technology, the vedio data collecting need to be through keeping the coding processing of original resolution, make vedio data that projecting apparatus receives and camera collection to the vedio data data that are equal resolution, ensure the high definition of projected image, met the convergent-divergent requirement of user to projected image.
The concrete application approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvement, these improve and also should be considered as protection scope of the present invention.
Claims (8)
1. a projecting method for video data, is applied on the terminal equipment with Airplay wireless technology, it is characterized in that, comprises capture apparatus and projector equipment, and step is as follows:
1) capture apparatus, by Airplay wireless technology search information, obtains the facility information of supporting Airplay wireless technology;
2) with search and the projector equipment of selected support Airplay wireless technology carries out socket and communicates by letter, set up HTTP initialization link;
3) camera of capture apparatus carries out the collection of real time video data information;
4) the above-mentioned video data collecting is carried out to data encoding processing, video is kept to the coding processing of original image resolution, ensure the high definition of coding video data after treatment;
5) give above-mentioned selected projector equipment by Airplay wireless technology by video data transmitting after treatment;
6) projection action will be carried out after the video data decoding receiving.
2. the projecting method of a kind of video data according to claim 1, it is characterized in that, above-mentioned steps 1) in, capture apparatus uses carry out _ Airplay.tcp of Bonjour network service local area network service search, find after respective service, obtain the facility information that this service correspondence is returned, comprise device id, IP address and MAC Address.
3. the projecting method of a kind of video data according to claim 2, it is characterized in that, above-mentioned steps 1) in _ Airplay.tcp service is by the form transmission of broadcast, and the equipment of any support Airplay wireless technology in LAN all can search above-mentioned broadcast.
4. the projecting method of a kind of video data according to claim 1, it is characterized in that, above-mentioned steps 2) in, capture apparatus finds the information of the projector equipment that will link in the facility information list of the support Airplay wireless technology of obtaining, by NetService network service initialization link information and carry out socket with selected projector equipment and communicate by letter, use Transmission Control Protocol to carry out transfer of data, carry out initialization link by http protocol.
5. the projecting method of a kind of video data according to claim 1, is characterized in that, above-mentioned steps 5) in, capture apparatus encapsulates video data after treatment, adds necessary HTTP data packet head, uses the POST method transmission data of http protocol.
6. the projecting method of a kind of video data according to claim 5, is characterized in that, above-mentioned HTTP data packet head comprises: http protocol version, link type, data length and whether use agency and wire data type.
7. the projecting method of a kind of video data according to claim 1, is characterized in that, if above-mentioned steps 3) add the processing of figure layer, step 4) specifically comprises:
(1) video data that first camera is taken can be with the form of the buffering area person that returns to video monitor, and listener can constantly be obtained screen buffer data;
(2) first from the buffer data of camera, obtain some essential informations of video, as video pixel size, video image direction, frame etc., by these data according to video encoding standard encode (using H.264 video encoding standard) process.
8. the projecting method of a kind of video data according to claim 1, is characterized in that, if above-mentioned steps 3) do not add the processing of figure layer, step 4) specifically comprises:
(1) video council that first camera is taken is with the form of the buffering area person that returns to video monitor, listener can constantly be obtained screen buffer data, create a new monitoring service simultaneously, the drawing figure layer newly adding on IOS mobile phone screen is monitored, can constantly be obtained like this view data of the drawing figure layer on IOS mobile phone;
(2) first some essential informations of obtaining video from the buffer data of camera, as video pixel size, video image direction, frame etc., then the view data of constantly obtaining from IOS mobile phone is processed, the figure tomographic image data that these are obtained from IOS mobile phone become the same specification of figure tomographic image data that same camera listens to, as direction of the time frame of the size of image pixel, image, image etc.;
(3) data after treatment that the drafting figure layer of buffer data camera being obtained and IOS mobile phone obtains merge, then by these data according to the processing of encoding of video encoding standard H.264.
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| CN201410271561.5A CN104038741A (en) | 2014-06-17 | 2014-06-17 | Projection method for video data |
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| CN201410271561.5A CN104038741A (en) | 2014-06-17 | 2014-06-17 | Projection method for video data |
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| CN105630438A (en) * | 2015-07-15 | 2016-06-01 | 宇龙计算机通信科技(深圳)有限公司 | Projection data processing method, processing apparatus, terminal and projection system |
| CN106060573A (en) * | 2016-06-17 | 2016-10-26 | 北京奇虎科技有限公司 | Live broadcast method and device based on terminal screen content |
| CN112449165A (en) * | 2020-11-10 | 2021-03-05 | 维沃移动通信有限公司 | Projection method and device and electronic equipment |
| CN114793291A (en) * | 2022-01-25 | 2022-07-26 | 深圳软牛科技有限公司 | IOS multi-device real-time screen projection method and system, computer device and storage medium |
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| CN114793291A (en) * | 2022-01-25 | 2022-07-26 | 深圳软牛科技有限公司 | IOS multi-device real-time screen projection method and system, computer device and storage medium |
| CN114793291B (en) * | 2022-01-25 | 2023-11-07 | 深圳软牛科技有限公司 | IOS multi-device real-time screen projection method, system, computer device and storage medium |
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Application publication date: 20140910 |