CN108271070B - Method, device and equipment for caching frame animation and computer readable storage medium - Google Patents
Method, device and equipment for caching frame animation and computer readable storage medium Download PDFInfo
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- 230000003139 buffering effect Effects 0.000 claims description 25
- 239000000872 buffer Substances 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 10
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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 or rendering scenes according to encoded video stream scene graphs
- H04N21/44004—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video buffer management, e.g. video decoder buffer or video display buffer
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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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Abstract
The invention introduces a method, a device, equipment and a computer readable storage medium for caching frame animation, wherein the method comprises the following steps: acquiring the first n frames of pictures in the frame animation, and loading the first n frames of pictures into a preset bitmap cache; and sequentially acquiring other frame pictures in the frame animation, and sequentially loading the other frame pictures into the bitmap cache to replace the pictures loaded into the bitmap cache. The invention relieves the memory pressure of the frame animation and avoids the problem of memory overflow when the frame animation is executed.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a computer-readable storage medium for caching a frame animation.
Background
Frame animation is a common form of animation, similar to a movie, and plays a plurality of pictures continuously at a certain speed, thereby forming the effect of animation visually. Generally, in the process of playing a frame animation through an application program, a terminal once buffers all pictures included in the decoded frame animation into an operating memory allocated to the application program by the terminal, and then plays the pictures frame by frame. However, when there are many pictures included in the frame animation, the amount of data cached in the running memory of the application program is large, and the running memory allocated by the terminal for each application program is fixed, which may cause a problem of memory overflow of the running memory of the application program.
Disclosure of Invention
Embodiments of the present invention mainly aim to provide a method, an apparatus, a device, and a computer-readable storage medium for caching a frame animation, which alleviate memory pressure of the frame animation and avoid a problem of memory overflow when the frame animation is executed.
In order to achieve the above object, an embodiment of the present invention provides a method for buffering a frame animation, where the method includes:
acquiring the first n frames of pictures in the frame animation, and loading the first n frames of pictures into a preset bitmap cache;
and sequentially acquiring other frame pictures in the frame animation, and sequentially loading the other frame pictures into the bitmap cache to replace the pictures loaded into the bitmap cache.
Optionally, before the obtaining the first n frames of pictures in the frame animation, the method further includes:
creating a bitmap cache containing n bitmap objects in a memory;
the loading the first n frames of pictures into a preset bitmap cache comprises:
and acquiring binary data of the first n frames of pictures in the frame animation, and respectively loading the binary data of the first n frames of pictures into each bitmap object in the bitmap cache.
Optionally, the sequentially obtaining other frame pictures in the frame animation and sequentially loading the other frame pictures into the bitmap cache to replace the pictures loaded into the bitmap cache includes:
and sequentially acquiring binary data of other frame pictures in the frame animation, and sequentially loading the binary data of the other frame pictures into the bitmap object cached by the bitmap so as to replace the binary data loaded into the bitmap object.
Optionally, the sequentially loading the binary data of the other frame pictures into the bitmap object of the bitmap cache to replace the binary data loaded into the bitmap object includes:
and sequentially loading the binary data of the other frame pictures into the (n-1) th bitmap object in the bitmap cache to replace the binary data loaded into the (n-1) th bitmap object.
Optionally, after the sequentially loading the binary data of the other frame pictures into the (n-1) th bitmap object in the bitmap cache to replace the binary data loaded into the (n-1) th bitmap object, the method further includes:
the n-1 th bitmap object whose binary data has been replaced is placed after the nth bitmap object.
In addition, to achieve the above object, an embodiment of the present invention further provides an apparatus for buffering a frame animation, where the apparatus includes:
the processing module is used for acquiring the first n frames of pictures in the frame animation and loading the first n frames of pictures into a preset bitmap cache;
and the replacing module is used for sequentially acquiring other frame pictures in the frame animation and sequentially loading the other frame pictures into the bitmap cache so as to replace the pictures loaded into the bitmap cache.
Optionally, the apparatus further comprises:
the creation module is used for creating a bitmap cache containing n bitmap objects in a memory before acquiring the first n frames of pictures in the frame animation;
the processing module is specifically configured to:
and acquiring binary data of the first n frames of pictures in the frame animation, and respectively loading the binary data of the first n frames of pictures into each bitmap object in the bitmap cache.
Optionally, the replacement module is specifically configured to:
and sequentially acquiring binary data of other frame pictures in the frame animation, and sequentially loading the binary data of the other frame pictures into the bitmap object cached by the bitmap so as to replace the binary data loaded into the bitmap object.
In addition, to achieve the above object, an embodiment of the present invention further provides an apparatus for buffering a frame animation, where the apparatus includes: a processor, a memory, and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is used for executing the program of the buffer frame animation stored in the memory so as to realize the steps of the method of the buffer frame animation introduced above.
In addition, in order to achieve the above object, an embodiment of the present invention further provides a computer-readable storage medium, where a program for caching a frame animation is stored;
when executed by at least one processor, causes the at least one processor to perform the above-described steps of the method of buffering frame animations.
The method, the device, the equipment and the computer readable storage medium for caching the frame animation provided by the embodiment of the invention can load the pictures in the frame animation as required, and dynamically load the set number of pictures in the memory, so that the pictures which are not used are not loaded at first temporarily. By multiplexing the existing bitmap objects, the overhead of encoding can be reduced. The embodiment of the invention can relieve the memory pressure of the frame animation and avoid the problem of memory overflow when the frame animation is executed.
Drawings
FIG. 1 is a flow chart of a method of buffering frame animations according to a first embodiment of the present invention;
FIG. 2 is a flow chart of a method of buffering frame animations according to a second embodiment of the present invention;
FIG. 3 is a flow chart of a method of buffering frame animations according to a third embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating the structure of an apparatus for buffering frame animation according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of an apparatus for buffering a frame animation according to a fifth embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the embodiments of the present invention for achieving the intended purpose, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.
A first embodiment of the present invention provides a method for caching a frame animation, and as shown in fig. 1, the method specifically includes the following steps:
step S101: the method comprises the steps of obtaining the first n frames of pictures in frame animation, and loading the first n frames of pictures into a preset bitmap cache.
The maximum buffer capacity of the bitmap buffer is n frames of pictures; n is a preset integer greater than 0.
Specifically, the bitmap buffer is in a queue form, that is, a first-in first-out storage rule is adopted. And sequentially loading the first n frames of pictures in the frame animation into a bitmap cache according to the sequence of the pictures in the frame animation.
Further, after step S101, the method further includes:
and according to the sequence of the pictures in the frame animation, sequentially acquiring the pictures cached in the bitmap cache, and presenting the pictures on a display screen.
Step S102: and sequentially acquiring other frame pictures in the frame animation, and sequentially loading the other frame pictures into the bitmap cache to replace the pictures loaded into the bitmap cache.
Specifically, step S102 includes:
after the picture at the front end of the bitmap cache is presented on the display screen, the presented picture at the front end is removed from the bitmap cache, and other frame pictures in the frame animation are loaded to the tail end of the bitmap cache. For example, the frame animation includes 30 frames of pictures, and the first 10 frames of pictures in the frame animation are firstly cached in a bitmap cache; and after the 1 st frame picture is presented on the display screen, removing the 1 st frame picture from the bitmap cache, acquiring an 11 th frame picture in the frame animation, and loading the 11 th frame picture to the tail end of the bitmap cache.
Compared with the prior art, the embodiment of the invention loads partial pictures of the frame animation instead of loading all pictures of the frame animation into the memory at one time, thereby reducing the storage pressure of the memory.
A second embodiment of the present invention provides a method for buffering frame animation, as shown in fig. 2, the method specifically includes the following steps:
step S201: a bitmap cache is created in memory containing n bitmap objects.
When the pictures of the frame animation are loaded, a Bitmap object is instantiated for each frame of picture in the memory, and then binary data of each frame of picture is loaded into the corresponding Bitmap object. Since each bitmap object can only store binary data of one frame of picture, the bitmap buffer can only store n frames of pictures.
Step S202: and acquiring binary data of the first n frames of pictures in the frame animation, and respectively loading the binary data of the first n frames of pictures into each bitmap object in the bitmap cache.
Specifically, step S202 includes:
and numbering the bitmap objects in the bitmap cache in sequence, sequentially acquiring the binary data of the first n frames of pictures in the frame animation according to the sequence of the pictures in the frame animation, and sequentially loading the binary data of each frame of picture into the bitmap objects with corresponding numbers.
For example, binary data of the 1 st frame picture in the frame animation is loaded into a bitmap object with the number of 1; and loading the binary data of the nth frame picture in the frame animation into the bitmap object with the number of n.
Further, after step S202, the method further includes:
and sequentially acquiring binary data in each bitmap object according to the number of the bitmap object, sequentially encoding the binary data in each bitmap object into a picture, and sequentially displaying the encoded picture on a display screen.
Step S203: and sequentially acquiring binary data of other frame pictures in the frame animation, and sequentially loading the binary data of the other frame pictures into the bitmap object cached by the bitmap so as to replace the binary data loaded into the bitmap object.
Specifically, step S203 includes:
and after the binary data in the bitmap object is coded into a picture and the coded picture is displayed on a display screen, sequentially acquiring the binary data of other frame pictures in the frame animation, and loading the binary data of the other frame pictures into the bitmap object to replace the original binary data in the bitmap object.
Further, after step S203, the method further includes:
and placing the bitmap object with the binary data replaced into the last bit in the bitmap cache. Namely, the bitmap object with the binary data replaced is placed behind the bitmap object with the number n, and numbering is carried out on the bitmap object in the bitmap cache again.
For example, the frame animation includes 30 frames of pictures, and binary data of the first 10 frames of pictures in the frame animation are loaded into each bitmap object numbered from 1 to 10 in the bitmap cache respectively; after the binary data in the bitmap object with the number of 1 is coded into a picture and the coded picture is displayed on a display screen, loading the binary data of the picture of the 11 th frame in the frame animation into the bitmap object with the number of 1 to replace the original binary data in the bitmap object with the number of 1; the bitmap object with the number 1 is placed behind the bitmap object with the number 10, and numbering is carried out on the bitmap object in the bitmap cache again. That is, the bitmap object of original number 1 becomes the bitmap object of number 10.
In the prior art, a corresponding bitmap object is allocated to each frame of picture of a frame animation in a memory, that is, if a frame animation has m frames of pictures, m bitmap objects need to be allocated in the memory. However, in the embodiment of the present invention, only n bitmap objects are allocated in the memory, and the bitmap objects are multiplexed, so that the effect of reducing the memory usage amount is achieved, thereby reducing the memory pressure.
A third embodiment of the present invention provides a method for buffering frame animation, as shown in fig. 3, the method specifically includes the following steps:
step S301: a bitmap cache is created in memory containing n bitmap objects.
When the pictures of the frame animation are loaded, a Bitmap object is instantiated for each frame of picture in the memory, and then binary data of each frame of picture is loaded into the corresponding Bitmap object. Since each bitmap object can only store binary data of one frame of picture, the bitmap buffer can only store n frames of pictures.
Step S302: and acquiring binary data of the first n frames of pictures in the frame animation, and respectively loading the binary data of the first n frames of pictures into each bitmap object in the bitmap cache.
Specifically, step S302 includes:
and numbering the bitmap objects in the bitmap cache in sequence, sequentially acquiring the binary data of the first n frames of pictures in the frame animation according to the sequence of the pictures in the frame animation, and sequentially loading the binary data of each frame of picture into the bitmap objects with corresponding numbers.
For example, binary data of the 1 st frame picture in the frame animation is loaded into a bitmap object with the number of 1; and loading the binary data of the nth frame picture in the frame animation into the bitmap object with the number of n.
Further, after step S302, the method further includes:
and sequentially acquiring binary data in each bitmap object according to the number of the bitmap object, sequentially encoding the binary data in each bitmap object into a picture, and sequentially displaying the encoded picture on a display screen.
Step S303: sequentially acquiring binary data of other frame pictures in the frame animation, and sequentially loading the binary data of the other frame pictures into the (n-1) th bitmap object in the bitmap cache to replace the binary data loaded into the (n-1) th bitmap object.
Specifically, step S303 includes:
when the binary data in the bitmap object with the number of n in the bitmap cache is coded into a picture, the binary data of the picture of the (n + 1) th frame in the frame animation is obtained, and the binary data of the picture of the (n + 1) th frame is loaded into the bitmap object with the number of n-1 in the bitmap cache to replace the binary data loaded into the bitmap object with the number of n-1.
Since the binary data in the bitmap object numbered n-1 has already been encoded as a picture and has already been presented on the display screen when the binary data in the bitmap object numbered n is encoded, the bitmap object numbered n-1 is multiplexed, and the binary data of the subsequent pictures are sequentially loaded into the bitmap object numbered n-1.
Step S304: the n-1 th bitmap object whose binary data has been replaced is placed after the nth bitmap object.
Specifically, step S304 includes:
and placing the bitmap object with the number of n-1 after the binary data is replaced, and numbering the bitmap object in the bitmap cache again.
For example, the frame animation includes 30 frames of pictures, and binary data of the first 10 frames of pictures in the frame animation are loaded into each bitmap object numbered from 1 to 10 in the bitmap cache respectively; when the binary data in the bitmap object with the number of 10 is coded into a picture, loading the binary data of the picture of the 11 th frame in the frame animation into the bitmap object with the number of 9 to replace the original binary data in the bitmap object with the number of 9; the bitmap object numbered 9 is placed after the bitmap object numbered 10 and is numbered again for the bitmap objects in the bitmap buffer. That is, the bitmap object of original number 9 becomes the bitmap object of number 10.
Since the frame animation is usually played in a loop, in the embodiment of the present invention, only the penultimate bitmap object in the bitmap buffer is multiplexed in order to reuse the pictures of the first few frames in the frame animation. This allows the oldest pictures to be buffered and have the opportunity to be temporarily reused in the next animation run.
A fourth embodiment of the present invention provides an apparatus for buffering frame animation, as shown in fig. 4, the apparatus specifically includes the following components:
the processing module 401 is configured to obtain the first n frames of pictures in the frame animation, and load the first n frames of pictures into a preset bitmap cache.
Specifically, the apparatus further comprises:
and the creating module is used for creating a bitmap cache containing n bitmap objects in the memory before acquiring the first n frames of pictures in the frame animation.
Further, the processing module 401 is specifically configured to:
and acquiring binary data of the first n frames of pictures in the frame animation, and respectively loading the binary data of the first n frames of pictures into each bitmap object in the bitmap cache.
A replacing module 402, configured to sequentially obtain other frame pictures in the frame animation, and sequentially load the other frame pictures into the bitmap cache to replace the pictures loaded into the bitmap cache.
Specifically, the replacing module 402 is configured to:
and sequentially acquiring binary data of other frame pictures in the frame animation, and sequentially loading the binary data of the other frame pictures into the bitmap object cached by the bitmap so as to replace the binary data loaded into the bitmap object.
Further, the replacing module 402 is specifically configured to:
and sequentially loading the binary data of the other frame pictures into the (n-1) th bitmap object in the bitmap cache to replace the binary data loaded into the (n-1) th bitmap object.
Still further, the apparatus further comprises:
and the adjusting module is used for loading the binary data of the other frame pictures into the (n-1) th bitmap object in the bitmap cache in sequence to replace the binary data loaded into the (n-1) th bitmap object, and then placing the (n-1) th bitmap object with the replaced binary data behind the (n) th bitmap object.
A fifth embodiment of the present invention provides an apparatus for buffering a frame animation, as shown in fig. 5, the apparatus including: a processor 501, a memory 502, and a communication bus;
the communication bus is used for realizing connection communication between the processor 501 and the memory 502;
the processor 501 is used to execute the program of the buffered frame animation stored in the memory 502 to implement the following steps:
acquiring the first n frames of pictures in the frame animation, and loading the first n frames of pictures into a preset bitmap cache;
and sequentially acquiring other frame pictures in the frame animation, and sequentially loading the other frame pictures into the bitmap cache to replace the pictures loaded into the bitmap cache.
A sixth embodiment of the present invention proposes a computer-readable storage medium storing a program for buffering a frame animation;
when executed by at least one processor, the program for buffering frame animations causes the at least one processor to perform the steps of:
acquiring the first n frames of pictures in the frame animation, and loading the first n frames of pictures into a preset bitmap cache;
and sequentially acquiring other frame pictures in the frame animation, and sequentially loading the other frame pictures into the bitmap cache to replace the pictures loaded into the bitmap cache.
The method, the device, the equipment and the computer readable storage medium for caching the frame animation can load the frame pictures in the frame animation as required and dynamically load a set number of frame pictures in a memory, so that the unused frame pictures are not loaded at first temporarily. By multiplexing the existing bitmap objects, the overhead of encoding can be reduced. The embodiment of the invention can relieve the memory pressure of the frame animation and avoid the problem of memory overflow when the frame animation is executed.
While the embodiments of the present invention have been described in terms of specific embodiments, it is to be understood that both the foregoing general description and the following detailed description are intended to provide further explanation and understanding of the invention as claimed.
Claims (8)
1. A method of buffering frame animations, the method comprising:
creating a bitmap cache containing n bitmap objects in a memory;
acquiring the first n frames of pictures in the frame animation, and loading the first n frames of pictures into a preset bitmap cache, wherein the method comprises the following steps: sequentially numbering the bitmap objects in the bitmap cache, sequentially acquiring binary data of the first n frames of pictures in the frame animation according to the sequence of the pictures in the frame animation, and sequentially loading the binary data of each frame of picture into the bitmap objects with corresponding numbers;
after the picture at the front end of the bitmap cache is displayed on the display screen, removing the displayed picture at the front end from the bitmap cache, sequentially acquiring other frame pictures in the frame animation, and sequentially loading the other frame pictures into the bitmap cache to replace the picture loaded into the bitmap cache.
2. The method for buffering frame animation according to claim 1, wherein the sequentially obtaining other frame pictures in the frame animation and sequentially loading the other frame pictures into the bitmap buffer to replace the pictures loaded into the bitmap buffer comprises:
and sequentially acquiring binary data of other frame pictures in the frame animation, and sequentially loading the binary data of the other frame pictures into the bitmap object cached by the bitmap so as to replace the binary data loaded into the bitmap object.
3. The method for buffering frame animation according to claim 2, wherein the sequentially loading the binary data of the other frame pictures into the bitmap object of the bitmap buffer to replace the binary data loaded into the bitmap object comprises:
and sequentially loading the binary data of the other frame pictures into the (n-1) th bitmap object in the bitmap cache to replace the binary data loaded into the (n-1) th bitmap object.
4. The method for buffering frame animation as claimed in claim 3, wherein after the sequentially loading the binary data of the other frame pictures into the (n-1) th bitmap object in the bitmap buffer to replace the binary data loaded into the (n-1) th bitmap object, the method further comprises:
the n-1 th bitmap object whose binary data has been replaced is placed after the nth bitmap object.
5. An apparatus for buffering frame animations, the apparatus comprising:
the creation module is used for creating a bitmap cache containing n bitmap objects in a memory before acquiring the first n frames of pictures in the frame animation;
the processing module is used for acquiring the first n frames of pictures in the frame animation, loading the first n frames of pictures into a preset bitmap cache, specifically numbering bitmap objects in the bitmap cache in sequence, acquiring binary data of the first n frames of pictures in the frame animation in sequence according to the sequence of the pictures in the frame animation, and loading the binary data of each frame of picture into the bitmap object with the corresponding number in sequence;
and the replacing module is used for removing the presented pictures at the front end from the bitmap cache after the pictures at the front end of the bitmap cache are presented on the display screen, sequentially acquiring other frame pictures in the frame animation, and sequentially loading the other frame pictures into the bitmap cache to replace the pictures loaded into the bitmap cache.
6. The apparatus for buffering frame animation according to claim 5, wherein the replacement module is specifically configured to:
and sequentially acquiring binary data of other frame pictures in the frame animation, and sequentially loading the binary data of the other frame pictures into the bitmap object cached by the bitmap so as to replace the binary data loaded into the bitmap object.
7. An apparatus for buffering frame animation, the apparatus comprising: a processor, a memory, and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is used for executing the program of the buffer frame animation stored in the memory to realize the steps of the method of the buffer frame animation in any one of claims 1 to 4.
8. A computer-readable storage medium characterized in that the computer-readable storage medium stores a program for buffering frame animation;
the program for buffering frame animations, when executed by at least one processor, causes the at least one processor to perform the steps of the method for buffering frame animations according to any one of claims 1 to 4.
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