CN112019901A - Method for playing dynamic map added video - Google Patents
Method for playing dynamic map added video Download PDFInfo
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- CN112019901A CN112019901A CN202010757169.7A CN202010757169A CN112019901A CN 112019901 A CN112019901 A CN 112019901A CN 202010757169 A CN202010757169 A CN 202010757169A CN 112019901 A CN112019901 A CN 112019901A
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- Prior art keywords
- module
- mode
- video
- station
- playing
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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
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41415—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance involving a public display, viewable by several users in a public space outside their home, e.g. movie theatre, information kiosk
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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
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
Abstract
The invention discloses a method for playing a dynamic map added video, which comprises a video playing module, a site information display module and a decision module, wherein the video playing module is used for receiving an audio and video stream so as to perform decoding playing; meanwhile, monitoring an information instruction of the decision module to determine whether to hide, display, pause or continue playing the video or not and whether to reset a display area; the station information display module is used for receiving station, time and emergency broadcast information and further analyzing and displaying the information; the site information display module monitors the information instruction of the decision module to decide whether to reset the display area and the content. The invention can lead passengers to focus on one LCD display in the carriage, and can enjoy videos while acquiring station information.
Description
Technical Field
The invention relates to the technical field of digital multimedia playing, in particular to a method for playing a dynamic map adding video. Background
The video system in the existing rail transit vehicle-mounted passenger information system is designed by a combination of a dynamic map and a television, wherein the dynamic map is responsible for providing site information, and the television is responsible for providing video advertisements. This design has some disadvantages, such as:
when a passenger enjoys a video, the passenger may miss a stop to get off;
when the passenger flow density in the carriage is high, passengers in front of the television are not very convenient to see the site information of the dynamic map;
and thirdly, each carriage needs a dynamic map and a television, so that the investment cost is high.
Disclosure of Invention
In order to solve the technical problem, the invention provides a method for playing dynamic map-added video, which can enable passengers to obtain station information and enjoy video by only focusing on one LCD display in a carriage.
The technical scheme of the invention is as follows: a method for playing a dynamic map adding video,
comprises a video playing module, a site information display module and a decision module,
the video playing module is used for receiving the audio and video stream so as to perform decoding playing; meanwhile, monitoring an information instruction of the decision module to determine whether to hide, display, pause or continue playing the video or not and whether to reset a display area;
the station information display module is used for receiving station, time and emergency broadcast information and further analyzing and displaying the information; the site information display module monitors the information instruction of the decision module to decide whether to reset the display area and the content;
the decision module is used for receiving site mode information to decide a display style, and the site modes are divided into four types: station _ MODE, parameter _ MODE, TRAVELLING _ MODE, and advance _ MODE (i.e., station to station MODE).
Preferably, the method for simultaneously or separately displaying the video and the site is to use linux frame buffer layering technology, and the video playing module and the site information display module are respectively displayed at one layer, i.e. the video playing module is displayed at/dev/fb 1, and the site information display module is displayed at/dev/fb 0; the simultaneous/dev/fb 1 is configured as an overlay layer of/dev/fb 0, i.e.,/dev/fb 1 is on the upper layer of/dev/fb 0, covering the display, and the color mode of/dev/fb 1 is set to ARGB, and whether both displays are simultaneously displayed or only one of the displays can be controlled by setting the alpha property of the pixel point of/dev/fb 1.
Preferably, when the station MODE reports the STANDING _ MODE, the decision module informs the station information display module to display in a full screen MODE, and the video playing module pauses playing and hides to remind passengers not to miss the station;
when the station MODE reports of STANDING _ MODE, DEPARTURE _ MODE and TRAVELLING _ MODE, the decision module informs the video playing module to continue playing and displays the video and the station information display module in an upper and lower two-screen split MODE, wherein the station information display module only occupies a small part of the bottom. The advantage is that when the train is in operation, the passengers can enjoy the video, but the current station situation is not unknown.
Through the technical scheme, the technical scheme of the invention has the beneficial effects that: the dynamic map and the television are combined and integrated on one LCD display, so that site information can be independently displayed, videos can be independently played, and the site information and the videos can be simultaneously displayed; and the playing style can be automatically switched according to the site mode information.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of a video playback module according to an embodiment of the present invention;
FIG. 2 is a flowchart of a site information display module according to an embodiment of the present invention;
FIG. 3 is a flow chart of a decision module disclosed in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a method for playing a dynamic map adding video,
comprises a video playing module, a site information display module and a decision-making module, wherein the three modules are respectively realized by processes, namely corresponding to the three processes, the modules are communicated through a network protocol,
the video playing module is used for receiving the audio and video stream so as to perform decoding playing; meanwhile, monitoring an information instruction of the decision module to determine whether to hide, display, pause or continue playing the video or not and whether to reset a display area;
the station information display module is used for receiving station, time and emergency broadcast information and further analyzing and displaying the information; the site information display module monitors the information instruction of the decision module to decide whether to reset the display area and the content;
the decision module is used for receiving site mode information to decide a display style, and the site modes are divided into four types: station _ MODE, parameter _ MODE, TRAVELLING _ MODE, and advance _ MODE (i.e., station to station MODE).
When the station MODE reports the STANDING _ MODE, the decision module informs the station information display module to display in a full screen MODE, and the video playing module pauses playing and hides to remind passengers not to miss the station;
when the station MODE reports of STANDING _ MODE, DEPARTURE _ MODE and TRAVELLING _ MODE, the decision module informs the video playing module to continue playing and displays the video and the station information display module in an upper and lower two-screen split MODE, wherein the station information display module only occupies a small part of the bottom. The advantage is that when the train is in operation, the passengers can enjoy the video, but the current station situation is not unknown.
The method for simultaneously or separately displaying the video and the site is to use linux frame buffer layering technology, and the video playing module and the site information display module are respectively displayed at one layer, namely the video playing module is displayed at/dev/fb 1, and the site information display module is displayed at/dev/fb 0; the simultaneous/dev/fb 1 is configured as an overlay layer of/dev/fb 0, i.e.,/dev/fb 1 is on the upper layer of/dev/fb 0, covering the display, and the color mode of/dev/fb 1 is set to ARGB, and whether both displays are simultaneously displayed or only one of the displays can be controlled by setting the alpha property of the pixel point of/dev/fb 1. For example, if the alpha value of all the pixels (1920 × 1080) of the/dev/fb 1 is set to 0, the/dev/fb 1 layer is entirely transparent, and the LCD displays a/dev/fb 0 image; setting the coordinates (0,880) of the pixels of/dev/fb 1, setting the alpha value of width (1920 × 200) to be 0, and keeping the rest to be 255, wherein the part is transparent, displaying the picture of the lower layer/dev/fb 0, and the upper part still displays the video of/dev/fb 1, thereby achieving the effect of two split screens.
As shown in fig. 1, two tasks run concurrently on this module:
1. receiving audio and video data streams and performing decoding playing;
2. receiving and responding to commands sent by the decision module, wherein the commands comprise 5 types:
a. hidden video
b. Displaying video
c. Pausing playback
d. Continue playing
e. A display area is set.
As shown in fig. 2, two tasks run concurrently on this module:
1. receiving site information, analyzing and displaying;
2. and receiving and responding to the command sent by the decision module.
There is only one information instruction, namely setting the display area, full screen or two split screens.
As shown in fig. 3, the station mode information is received, and accordingly, the LCD display mode is determined, and a corresponding control signaling is sent to the video playing module and the station information display module.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. A method for playing dynamic map added with video is characterized in that the method comprises a video playing module, a site information display module and a decision module,
the video playing module is used for receiving the audio and video stream so as to perform decoding playing; meanwhile, monitoring an information instruction of the decision module to determine whether to hide, display, pause or continue playing the video or not and whether to reset a display area;
the station information display module is used for receiving station, time and emergency broadcast information and further analyzing and displaying the information; the site information display module monitors the information instruction of the decision module to decide whether to reset the display area and the content;
the decision module is used for receiving site mode information to decide a display style, and the site modes are divided into four types: station _ MODE, parameter _ MODE, TRAVELLING _ MODE, and advance _ MODE (i.e., station to station MODE).
2. The method as claimed in claim 1, wherein the video and the site can be displayed simultaneously or separately by using linux frame buffer layering technique, and the video playing module and the site information display module are respectively displayed in one layer, i.e. the video playing module is displayed in/dev/fb 1 and the site information display module is displayed in/dev/fb 0; the simultaneous/dev/fb 1 is configured as an overlay layer of/dev/fb 0, i.e.,/dev/fb 1 is on the upper layer of/dev/fb 0, covering the display, and the color mode of/dev/fb 1 is set to ARGB, and whether both displays are simultaneously displayed or only one of the displays can be controlled by setting the alpha property of the pixel point of/dev/fb 1.
3. The method as claimed in claim 1, wherein when the station MODE reports standby _ MODE, the decision module notifies the station information display module to display in full screen, and the video playing module pauses playing and hides to remind the passenger not to miss the station;
when the station MODE reports of STANDING _ MODE, DEPARTURE _ MODE and TRAVELLING _ MODE, the decision module informs the video playing module to continue playing and displays the video and the station information display module in an upper and lower two-screen split MODE, wherein the station information display module only occupies a small part of the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757169.7A CN112019901A (en) | 2020-07-31 | 2020-07-31 | Method for playing dynamic map added video |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010757169.7A CN112019901A (en) | 2020-07-31 | 2020-07-31 | Method for playing dynamic map added video |
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| CN112019901A true CN112019901A (en) | 2020-12-01 |
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| CN202010757169.7A Pending CN112019901A (en) | 2020-07-31 | 2020-07-31 | Method for playing dynamic map added video |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113971892A (en) * | 2021-10-20 | 2022-01-25 | 广州通达汽车电气股份有限公司 | Broadcasting method and device of station, multimedia equipment and storage medium |
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