CN106385635A - GIF animation real-time control method and player - Google Patents
GIF animation real-time control method and player Download PDFInfo
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- CN106385635A CN106385635A CN201610827040.2A CN201610827040A CN106385635A CN 106385635 A CN106385635 A CN 106385635A CN 201610827040 A CN201610827040 A CN 201610827040A CN 106385635 A CN106385635 A CN 106385635A
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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
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47217—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks
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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
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
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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
- H04N21/44012—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 rendering scenes according to scene graphs, e.g. MPEG-4 scene graphs
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Human Computer Interaction (AREA)
- Processing Or Creating Images (AREA)
Abstract
The invention provides a GIF animation real-time control method and player, and the method comprises the steps: reading and analyzing a GIF animation, and obtaining image frames; setting the delay time of the image frames; sequentially rendering the image frames according to a sequence, wherein the staying time of each image frame is taken as the delay time of the image frame; setting progress bars and a play cursor; enabling the image frames to be corresponding to the progress bars according to the sequence; enabling the play cursor to be bound with the progress bars; moving the play cursor and carrying out the real-time control of the play progress of the GIF animation. The method carries out the reading and analysis of the GIF animation, obtains the image frames, resets the delay time of all frames according to the needs, carries out the rendering of the image frames sequentially, enables the image frames to stay for the delay time for display, and achieves the flexible control of the play speed of the GIF animation. Through the setting of the progress bars and the play cursor, the method carries out the real-time control of the play progress of the GIF animation, and greatly improves the user experience.
Description
Technical field
The present invention relates to animation plays field, more particularly, to a kind of GIF animation real-time control method and player.
Background technology
The browser of main flow all clearly supports GIF form at present, and therefore GIF is most widely used picture coding on Web
Form, in-line image and external linkage image can use this form.GIF coding techniques can make on many platforms
With, the GIF image creating in Apple Computers system, the PC based on Windows can also load, decodes and check.
GIF employs a kind of special compress technique (LZW), can be substantially reduced the size of image file, thus being able to
Network is quickly transmitted.And GIF compression is " lossless " compression, in image original data all without changing or
Lose, so decompression contracts, decoded image is just the same with original image.GIF format-pattern can be in one file
Storage multiframe figure, reads these figures frame by frame and renders, you can to realize simple frame-by-frame cartoons.In GIF, each figure
As between all there is special control section, can be used to arrange browser and show the secondary of whole sequence (circulation) from the beginning to the end
Number, the time paused between each two image, and whether erased from background before browser display latter one image
Image space etc..
Existing GIF animation in webpage be by browser by picture load and render, browser GIF picture is carried out by
Frame is drawn, can only according to the time setting in its former gif file and played in order it is impossible to show animation playing progress rate, cannot
Playing progress rate is controlled, greatly have impact on Consumer's Experience.
It is real that the Chinese patent of Publication No. CN 104952097A discloses a kind of GIF animation based on multiframe decomposition technique
Shi Fangfa, including：By each frame in GIF animation is separated, and when each frame separated is play according to it
Between continuously put in different queues, each queue correspond to a time timer, using time timer real-time control every team
The broadcasting speed of each frame in row, leads into the broadcasting of next frame using the movement playing vernier, real-time control GIF animation
Playing progress rate.But the program to control animation broadcasting speed by way of each frame is put into different queue, time control in fact
Effect processed is unsatisfactory.
Content of the invention
The technical problem to be solved is：One kind is provided can flexibly to control GIF animation to play under browser
The real-time control method of progress and player.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is：
A kind of GIF animation real-time control method, including：
Read and parse GIF animation, obtain picture frame；
The delay time of setting described image frame；
Render picture frame in order successively, each picture frame residence time is the delay time of described image frame；
Setting progress bar and broadcasting vernier；In order that picture frame is corresponding with progress bar；By described broadcasting vernier and institute
State progress bar binding；Movement described broadcasting vernier carries out real-time control to the playing progress rate of described GIF animation.
The present invention provide another technical scheme be：
A kind of GIF animation real-time control player is it is characterised in that include：
Data cell, for reading and parsing GIF animation, obtains picture frame；
Arranging unit, for arranging the delay time of described image frame；
Rendering unit, for rendering picture frame successively in order, each picture frame residence time is described image frame
Delay time；
Control unit, for arranging progress bar and playing vernier；In order that picture frame is corresponding with progress bar；Will be described
Play vernier and described progress bar binding；Movement described broadcasting vernier carries out real-time control to the playing progress rate of described GIF animation.
The beneficial effects of the present invention is：By reading and parsing GIF animation, obtain picture frame (include view data and
Delay time) sequence, reset the delay time of each frame as needed, render picture frame, present image successively by positive sequence or inverted order
Frame stops delay time set by this picture frame to show this picture frame, realizes flexibly controlling GIF animation broadcasting speed.And lead to
Cross setting progress bar and play vernier, real-time control is carried out to the playing progress rate of GIF animation, solving prior art cannot be clear
Look at the problem playing progress rate of GIF animation being controlled and showing in device, Consumer's Experience is greatly improved.Meanwhile, WEB application collection
Become described player, only need to by the URL of disclosed data resource interface incoming GIF animation, the width (pixel) of broadcast window and
The highly parameter such as (pixel) is it is possible to realize real-time control and the display of playing progress rate, and the adjustment of broadcasting speed.
Brief description
Fig. 1 is the flow chart of the GIF animation real-time control method of the embodiment of the present invention；
Fig. 2 is the structural representation of the GIF animation real-time control player of the embodiment of the present invention；
Fig. 3 is the schematic diagram of the GIF picture frame sequence of the embodiment of the present invention one；
Fig. 4 is GIF animation frame sequence, progress bar and the schematic diagram playing vernier of the embodiment of the present invention one.
Label declaration：
1st, data cell；2nd, arranging unit；3rd, rendering unit；4th, control unit；41st, division unit；42nd, corresponding unit.
Specific embodiment
By describing the technology contents of the present invention in detail, being realized purpose and effect, below in conjunction with embodiment and coordinate attached
Figure is explained.
The design of most critical of the present invention is：After parsing GIF animation obtains picture frame, reset prolonging of all picture frames
When the time, according to described delay time show picture frame, and arrange progress bar and play vernier control GIF animation broadcasting enter
Degree.
Refer to Fig. 1, the present invention provides a kind of GIF animation real-time control method, including：
Read and parse GIF animation, obtain picture frame；
The delay time of setting described image frame；
Render picture frame in order successively, each picture frame residence time is the delay time of described image frame；
Setting progress bar and broadcasting vernier；In order that picture frame is corresponding with progress bar；By described broadcasting vernier and institute
State progress bar binding；Movement described broadcasting vernier carries out real-time control to the playing progress rate of described GIF animation.
Further, specifically include corresponding with progress bar for picture frame in order：
Quantity according to picture frame divides equally described progress bar；By each picture frame successively with divide equally after described progress bar
Each section of one-to-one corresponding.
The currently playing progress of GIF animation knowable to foregoing description, can be indicated by progress bar, play trip by mobile
The position marked on a progress bar can control the broadcasting of GIF animation positive sequence, flashback broadcasting, advance, retrogressing, broadcasting, time-out etc..
Further, carry out real-time control to the playing progress rate of described GIF animation to include：
Mobile broadcasting vernier, the broadcasting vernier after the picture frame of current presentation sequentially renders to move successively is in progress bar
On the corresponding picture frame in position.
Knowable to foregoing description, by playing vernier by mobile, control from current image frame positive sequence or Reverse Play to broadcasting
Put correspondence image frame after vernier moves.It is the 5th two field picture as currently playing, mobile play vernier to the 8th two field picture in progress
Corresponding position on bar, then play to the 8th two field picture from the 5th two field picture positive sequence.Currently playing is the 5th two field picture, and movement is broadcast
Put vernier to the 3rd two field picture, then from the 5th two field picture Reverse Play to the 3rd two field picture.
Further, the playing progress rate of described GIF animation is carried out real-time control include playing, tentative, front forward one frame and
At least one in backward one frame afterwards.
Understand, above-mentioned real-time control is the modal real-time control of current video playback it is also possible to set from foregoing description
Put other control options.
Further, the real-time control of front forward one frame includes：
Mobile broadcasting vernier, the picture frame of current presentation is redirected as next image frame.
The real-time control of backward one frame includes afterwards：
Mobile broadcasting vernier, the picture frame of current presentation is redirected as a upper picture frame.
Refer to Fig. 2, another technical scheme of the present invention is：
A kind of GIF animation real-time control player is it is characterised in that include：
Data cell 1, for reading and parsing GIF animation, obtains picture frame；
Arranging unit 2, for arranging the delay time of described image frame；
Rendering unit 3, for rendering picture frame successively in order, each picture frame residence time is described image frame
Delay time；
Control unit 4, for arranging progress bar and playing vernier；In order that picture frame is corresponding with progress bar；By institute
State broadcasting vernier and described progress bar binding；Movement described broadcasting vernier is controlled in real time to the playing progress rate of described GIF animation
System.
Further, described control unit 4 also includes：
Division unit 41, divides equally described progress bar for the quantity according to picture frame；
Corresponding unit 42, for by each picture frame successively with divide equally after each section of described progress bar one-to-one corresponding.
Further, described control unit 4 is additionally operable to after the picture frame of current presentation sequentially renders to move successively
Play the corresponding picture frame in vernier position on a progress bar.
Further, control unit 4 is additionally operable to arrange broadcast button, pause button, front forward one frame button and rear backward one frame
Button, and described broadcast button, pause button, front forward one frame button and rear backward one frame button and progress bar are bound, right respectively
Described GIF image is played out, fixes tentatively, the real-time control of front forward one frame and rear backward one frame.
Further, described front forward one frame button be used for mobile play vernier, by the picture frame of current presentation redirect under
One picture frame；Described rear backward one frame button is used for mobile broadcasting vernier, and the picture frame of current presentation is redirected as a upper picture frame.
With reference to Fig. 1 to Fig. 4, technique scheme is described in detail：
According to GIF image file format specification, GIF image file is to carry out storage image information in the form of block, therein
Block is also called regional structure.Feature according to wherein block can be divided into three major types by all of piece again, is control block respectively
(Control Block), image descriptor (Graphic Rendering Block) and specific use block (Special
Purpose Block).
Control block contains the process of control data stream and the setting of hardware parameter, mainly includes File header information, patrols
Collect screen description block, image control extent block and end-of-file (EOF) block.
Image descriptor contains the information describing on the display device needed for image, its member include image descriptor,
Overall palette, local palette, image compression data and picture specification extent block.One two field picture corresponds to an iamge description
Block, in order to distinguish two width images, the picture delimiter (Image Separator) that GIF employs a byte carrys out identification image
The beginning of description block, takes fixed value 0x2C.
Specific use block contains the information with image real time transfer no direct relation, and its member includes annotation of images and expands
Block and application program extent block.
In technique scheme, read and parse GIF view data, that is, during above-mentioned GIF animation, by above-mentioned GIF image literary composition
Part structure is parsed, and is distinguished by picture delimiter and obtains GIF picture frame sequence, each picture frame comprise view data and
Delay time, as shown in Figure 3.
In technical scheme, reset the delay time of each frame as needed, render figure successively by positive sequence or inverted order
As frame, stop when the delay time set by frame is to show image, to realize flexibly controlling GIF animation broadcasting speed.Such as, think
Accelerate the broadcasting speed of certain fragment in GIF animation, the delay time of each for this fragment frame can be shortened；Want to slow down GIF animation
The delay time of each for this fragment frame can be extended by the broadcasting speed of fragment.Here fragment can be optional position, arbitrarily long
Degree, therefore has very high motility.
Embodiment one
A kind of GIF animation real-time control method based on browser, its step includes：
S1, read and parse the view data of GIF animation, obtain all picture frames (including view data and delay time)
Sequence；
S2, reset the delay time of each frame as needed, to adjust GIF animation broadcasting speed；
S3, render picture frame successively by positive sequence or inverted order, each picture frame residence time is to this image in step S2
The delay time that frame is reseted, to show this picture frame；
S4, setting progress bar and broadcasting vernier, divide equally progress bar according to the frame number N of GIF image, by each picture frame successively
With divide equally after each section of progress bar one-to-one corresponding, and by described broadcasting vernier and described progress bar binding.By positive sequence or inverted order
When continuously rendering and show n-th frame (1≤n≤N) image, play the corresponding positive sequence of vernier or inverted order moves in real time to progress bar n-th
Decile end.Positive sequence or the mobile real-time control play vernier, realize to GIF animation playing progress rate of inverted order.
Wherein, the described real-time control to GIF animation playing progress rate include positive sequence broadcasting, Reverse Play, broadcasting, time-out,
One or more of front forward one frame, rear backward one frame real-time control.
It is illustrated in figure 4 GIF animation frame sequence, progress bar and the schematic diagram playing vernier.The frame number of GIF image is N, then
Progress bar is divided into N decile.Assume that playing vernier is currently at progress bar the 3rd frame position, when broadcasting vernier is from current location
By positive sequence movement to progress bar N+1 frame position, implement GIF the 3rd frame continuously rendering and showing as positive sequence to nth frame image
Play；Move in reverse order to progress bar the 1st frame position from current location when playing vernier, implement GIF the 3rd frame to the 1st two field picture
Continuously render and show as Reverse Play.
The real-time control method of described time-out is：Play vernier to stop moving in current location.As shown in Figure 3 it is assumed that broadcasting
Put vernier and be currently at progress bar the 3rd frame position, now render and show the 3rd two field picture.Stop mobile broadcasting vernier, broadcasting is
Pause at the position of the 3rd frame.
The real-time control method of described front forward one frame is：Play vernier and move to the in real time from n-th frame (1≤n≤N) position
N+1 frame.As shown in Figure 3 it is assumed that playing vernier to be currently at progress bar the 2nd frame position, progress can be moved to by playing vernier
Article the 3rd frame position, renders and shows the 3rd two field picture, and the single frames realizing former frame is play.
The real-time control method of described rear backward one frame is：Play vernier to move in real time from n-th frame (2≤n≤N+1) position
(n-1)th frame.As shown in Figure 3 it is assumed that playing vernier to be currently at progress bar the 3rd frame position, can by play vernier move to into
Degree article the 2nd frame position, renders and shows the 2nd two field picture, and the single frames realizing a later frame is play.
Embodiment two：
Refer to Fig. 2, a kind of GIF animation real-time control player, including：
Data cell 1, for obtaining the view data of GIF animation to be play, and parses this view data and is owned
Picture frame (including view data and delay time) sequence；
Arranging unit 2, for reseting the delay time of each picture frame as needed, to adjust GIF animation broadcasting speed；
Rendering unit 3, for rendering picture frame successively by positive sequence or inverted order, the time of staying of each picture frame is this image
The delay time of frame, to show this picture frame；
Control unit 4, for setting broadcasting, time-out, front forward one frame, rear backward one frame real-time control button, completes GIF is moved
Draw the real-time control play；Setting progress bar and broadcasting vernier simultaneously, and by described broadcasting vernier and described progress bar binding, enter
Degree bar is used for indicating currently playing progress；Described control unit 4 also includes division unit 41, for the frame number N according to GIF image
Divide equally progress bar, and corresponding unit 42, for by each picture frame successively with divide equally after progress bar each section of one-to-one corresponding.
When continuously rendering and show n-th frame (1≤n≤N) image by positive sequence or inverted order, play the corresponding positive sequence of vernier or inverted order moves in real time
To progress bar the n-th decile end.Positive sequence or the mobile real-time control play vernier, realize to GIF animation playing progress rate of inverted order.
The real-time control method of described broadcast button is：Click on broadcast button, broadcast button is changed into pause button, broadcasts simultaneously
Put vernier synchronously to move on a progress bar with playing progress rate.
The real-time control method of described pause button is：Click on pause button, pause button is changed into broadcast button, broadcasts simultaneously
Put vernier and stop at progress bar current location.
The real-time control method of described front forward one frame button is：Play vernier on a progress bar from current n-th frame (1≤n≤
N) position moves to the (n+1)th frame position in real time.
The real-time control method of described rear backward one frame is：Play vernier on a progress bar from current n-th frame (2≤n≤N+1)
Position moves to the (n-1)th frame in real time.
Wherein, when currently playing frame being set for GIF animation the first frame, disable a later frame button；Currently playing frame moves for GIF
When drawing last frame, disable former frame button；At the end of GIF animation last frame is play, automatically begin to play the first frame.
In sum, the present invention provides GIF animation real-time control method and player, it is right in a browser to solve
The control of GIF animation playing progress rate and display, and the adjustment of broadcasting speed, are greatly improved Consumer's Experience.Additionally, the present invention
Player conceals GIF animation attributes by encapsulation and realizes details, only external disclosure data resource interface, is answering based on WEB
Provided convenience with integrated.
The foregoing is only embodiments of the invention, not thereby limit the present invention the scope of the claims, every using this
The equivalents that bright description and accompanying drawing content are made, or directly or indirectly it is used in the technical field of correlation, all include in the same manner
In the scope of patent protection of the present invention.
Claims (10)
1. a kind of GIF animation real-time control method is it is characterised in that include：
Read and parse GIF animation, obtain picture frame；
The delay time of setting described image frame；
Render picture frame in order successively, each picture frame residence time is the delay time of described image frame；
Setting progress bar and broadcasting vernier；In order that picture frame is corresponding with progress bar；By described broadcasting vernier with described enter
Degree bar binding；Movement described broadcasting vernier carries out real-time control to the playing progress rate of described GIF animation.
2. GIF animation real-time control method according to claim 1 it is characterised in that in order by picture frame with enter
Degree bar correspondence specifically includes：
Quantity according to picture frame divides equally described progress bar；By each picture frame successively with divide equally after each section of described progress bar
Correspond.
3. GIF animation real-time control method according to claim 2 is it is characterised in that the broadcasting to described GIF animation is entered
Degree carries out real-time control and includes：
Mobile play vernier, from the picture frame of current presentation sequentially render to successively mobile after play vernier on a progress bar
The corresponding picture frame in position.
4. GIF animation real-time control method according to claim 2 is it is characterised in that the broadcasting to described GIF animation is entered
Degree carries out real-time control and includes at least one in broadcasting, tentative, front forward one frame and rear backward one frame.
5. GIF animation real-time control method according to claim 4 is it is characterised in that the real-time control bag of front forward one frame
Include：
Mobile broadcasting vernier, the picture frame of current presentation is redirected as next image frame.
The real-time control of backward one frame includes afterwards：
Mobile broadcasting vernier, the picture frame of current presentation is redirected as a upper picture frame.
6. a kind of GIF animation real-time control player is it is characterised in that include：
Data cell, for reading and parsing GIF animation, obtains picture frame；
Arranging unit, for arranging the delay time of described image frame；
Rendering unit, for rendering picture frame in order successively, each picture frame residence time is prolonging of described image frame
When the time；
Control unit, for arranging progress bar and playing vernier；In order that picture frame is corresponding with progress bar；By described broadcasting
Vernier and described progress bar binding；Movement described broadcasting vernier carries out real-time control to the playing progress rate of described GIF animation.
7. GIF animation real-time control player according to claim 6 is it is characterised in that described control unit also includes：
Division unit, divides equally described progress bar for the quantity according to picture frame；
Corresponding unit, for by each picture frame successively with divide equally after each section of described progress bar one-to-one corresponding.
8. GIF animation real-time control player according to claim 7 is it is characterised in that described control unit is additionally operable to
Mobile broadcasting vernier, sequentially renders to the broadcasting vernier position on a progress bar after moving successively from the picture frame of current presentation
Corresponding picture frame.
9. GIF animation real-time control player according to claim 7 is it is characterised in that control unit is additionally operable to arrange
Broadcast button, pause button, front forward one frame button and rear backward one frame button, and by described broadcast button, pause button, advance one
Frame button and rear backward one frame button are bound with progress bar, play out, fix tentatively, move forward and backward to described GIF image respectively
Real-time control.
10. GIF animation real-time control player according to claim 9 is it is characterised in that described front forward one frame button is used
Play vernier in mobile, the picture frame of current presentation is redirected as next image frame；Described rear backward one frame button is used for movement and broadcasts
Put vernier, the picture frame of current presentation is redirected as a upper picture frame.
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| CN108289237A (en) * | 2018-02-12 | 2018-07-17 | 腾讯科技（深圳）有限公司 | Play method, apparatus, terminal and the computer readable storage medium of dynamic picture |
| CN108712675A (en) * | 2018-05-29 | 2018-10-26 | 广州梦映动漫网络科技有限公司 | The playback controls method and electronic equipment of animated element in a kind of dynamic caricature |
| CN109739607A (en) * | 2018-12-29 | 2019-05-10 | 深圳乐信软件技术有限公司 | Dynamic image loading method, device, equipment and storage medium |
| CN110019866A (en) * | 2017-09-30 | 2019-07-16 | 腾讯科技（深圳）有限公司 | Dynamic picture playback method, device and storage medium |
| CN110727825A (en) * | 2019-09-20 | 2020-01-24 | 彩讯科技股份有限公司 | Animation playing control method, device, server and storage medium |
| CN111443914A (en) * | 2020-03-30 | 2020-07-24 | 北京字节跳动网络技术有限公司 | Animation display method and device |
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