CN104023243A - Video preprocessing method and system and video post-processing method and system - Google Patents
Video preprocessing method and system and video post-processing method and system Download PDFInfo
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- CN104023243A CN104023243A CN201410187179.6A CN201410187179A CN104023243A CN 104023243 A CN104023243 A CN 104023243A CN 201410187179 A CN201410187179 A CN 201410187179A CN 104023243 A CN104023243 A CN 104023243A
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Abstract
The invention discloses video processing methods to solve the problems that the bus resource is occupied and the power consumption of equipment is high in the prior art. A video preprocessing method comprises that an IDMA (Image Direct Memory Access) reads original image data from an external memory device, and the original image data is transmitted to a video preprocessing unit via an IDS (Image Data Selector); and when the video preprocessing unit completes processing, image data after video preprocessing is transmitted to a video coding/decoding engine via the IDS for coding. The invention also discloses video processing systems. According to the methods and systems of the invention, the frequency of reading/writing data from the external memory device is reduced, so that the occupation proportion of bus bandwidth is reduced, and the power consumption of equipment is decreased.
Description
Technical field
The present invention relates to field of information processing, concrete, relate to video pre-treating method and system, video post-process method and system.
Background technology
Along with the arrival in mobile Internet epoch and the develop rapidly of integrated circuit technique, the upgrading of consumer handheld device is more and more faster, also brings user's experience that people become better and better.
In order to give the better multimedia experiences of user, the application processor of present consumer handheld device (Application Processor, AP) is conventionally all integrated coding and decoding video engine specially.In order further to strengthen experience effect, the forward and backward processing unit of video is also all come in by further integrated simultaneously.
Yet such integration mode has caused the read-write amount of larger exterior storage data.Because the process of coding and decoding video, video pretreatment process and video last handling process are separate.Take decode procedure as example, after coding and decoding video engine has been decoded, image will be stored in External memory equipment, for example, Double Data Rate synchronous DRAM (Double Data Rate Synchronous Dynamic Random Access Memory, DDR).Video post-processing unit needs again from External memory equipment, to read out image like this, just can carry out video reprocessing, then again the image after processing is deposited in External memory equipment.
Reading and writing data from External memory equipment so repeatedly, has taken valuable bus bandwidth resources on the one hand, has also improved on the other hand the power consumption of equipment.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides method for processing video frequency and system.
On the one hand, of the present inventionly provide a kind of video pre-treating method, comprising:
Image direct memory access IDMA reading images initial data from External memory equipment;
By view data selector, IDS transfers to video pretreatment unit by original image data;
After video pretreatment unit is handled, the view data through video pre-treatment is transferred to the processing of encoding of coding and decoding video engine by IDS.
On the other hand, the invention provides another video post-process method, comprising:
The processing of decoding of coding and decoding video engine reads image data from External memory equipment;
The image data transmission of process being decoded by view data selector IDS is to video post-processing unit;
After video post-processing unit is handled, the view data through video reprocessing is transferred to image direct memory access IDMA by IDS;
IDMA writes External memory equipment by the view data through video reprocessing.
Another aspect, the invention provides a kind of video preprocessing system, comprising:
Image direct memory access IDMA(501), for from External memory equipment reading images initial data, and by view data selector IDS, original image data is transferred to video pretreatment unit (502);
Video pretreatment unit (502), for original image data is carried out to video pre-treatment, and transfers to coding and decoding video engine (503) by the view data through video pre-treatment by IDS;
Coding and decoding video engine (503), for processing that the view data of process video pre-treatment is encoded.
Another aspect, the invention provides another video after-treatment system, comprising:
Coding and decoding video engine (601), for the processing of decoding from External memory equipment reads image data, and the image data transmission of process being decoded by view data selector IDS is to video post-processing unit (602);
Video post-processing unit (602), for the view data of process decoding is carried out to video reprocessing, and transfers to image direct memory access IDMA(603 by the view data through video reprocessing by IDS);
IDMA(603), for the view data through video reprocessing is write to External memory equipment.
Adopt method for processing video frequency provided by the invention and system, can reduce the frequency reading and writing data from External memory equipment, thereby reduce the occupation proportion of bus bandwidth, alleviate the power consumption of equipment.
Accompanying drawing explanation
A kind of video pre-treating method flow chart that Fig. 1 provides for the embodiment of the invention;
A kind of video post-process method flow chart that Fig. 2 provides for the another embodiment of the present invention;
The Echo Port agreement sequential chart that Fig. 3 provides for the embodiment of the invention;
Fig. 4 adopts Echo Port protocol message interaction figure in the embodiment of the invention;
A kind of video preprocessing system structural representation that Fig. 5 provides for the embodiment of the invention;
A kind of video after-treatment system structural representation that Fig. 6 provides for the another embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, a kind of video pre-treating method that embodiment of the present invention provides, comprising:
101, image direct memory access (Image Direct Memory Access, IDMA) unit reading images initial data from External memory equipment;
Optionally, said external memory device can be DDR.
Preferably, in the specific embodiment of the present invention, IDMA reads or writes back image pixel data by bus from External memory equipment.
102, by view data selector (Image Data Switch, IDS), original image data is transferred to video pretreatment unit;
Optionally, above-mentionedly by IDS, original image data is transferred to video pretreatment unit and can be: IDMA, by output port, transfers to IDS by original image data; IDS transfers to original image data video pretreatment unit again.
Optionally, above-mentioned video pretreatment unit can be image to be carried out to certain processing before coding to strengthen image effect or to make image meet the unit of coding requirement, for example, can be one or more in the graphics processing units such as image scaling unit, image noise reduction unit and image sharpening unit.
Preferably, in the specific embodiment of the present invention, IDS is data path switch array, and the gating of each data path is realized by one group of configuration register.For example, before encoding and decoding engine and the front/rear processing unit work of video, this group configuration register can be configured according to difference, sets up needed data path, as the output port of unit for scaling is connected to input port of noise reduction unit etc.
Optionally, above-mentioned port can be the port of configuration Echo Port agreement.About Echo Port agreement, after can be described in detail.
103, after video pretreatment unit is handled, the view data through video pre-treatment is transferred to the processing of encoding of coding and decoding video engine by IDS.
The video pre-treating method that adopts embodiment of the present invention to provide, can reduce the frequency reading and writing data from External memory equipment, thereby reduces the occupation proportion of bus bandwidth, alleviates the power consumption of equipment.
As shown in Figure 2, another embodiment of the present invention provides another kind of video post-process method, comprising:
201, the processing of decoding of coding and decoding video engine reads image data from External memory equipment;
Optionally, said external memory device can be DDR.
202, the image data transmission of process being decoded by IDS is to video post-processing unit;
Optionally, above-mentioned image data transmission to video post-processing unit of process being decoded by IDS can be: IDMA is by output port, and the image data transmission that process is decoded is to IDS; The image data transmission that IDS decodes process is again to video post-processing unit.
Optionally, above-mentioned video post-processing unit can be image to be carried out to certain processing after decoding to strengthen image effect or to make image meet the unit of display requirement, for example, can be one or more in the graphics processing units such as image scaling unit, image noise reduction unit and image sharpening unit.
Preferably, in the specific embodiment of the present invention, IDS is data path switch array, and the gating of each data path is realized by one group of configuration register.For example, before encoding and decoding engine and the front/rear processing unit work of video, this group configuration register can be configured according to difference, sets up needed data path, as the output port of unit for scaling is connected to input port of noise reduction unit etc.
Optionally, above-mentioned port can be the port of configuration Echo Port agreement.About Echo Port agreement, after can be described in detail.
203, after video post-processing unit is handled, the view data through video reprocessing is transferred to IDMA by IDS;
204, IDMA writes External memory equipment by the view data through video reprocessing.
The video post-process method that adopts embodiment of the present invention to provide, can reduce the frequency reading and writing data from External memory equipment, thereby reduces the occupation proportion of bus bandwidth, alleviates the power consumption of equipment.
In embodiments of the present invention, Echo Port agreement is a kind of one-way data host-host protocol, and the data that can realize between each units/modules are directly transmitted, simply efficient.Interacting message figure in conjunction with shown in the Echo Port agreement sequential chart shown in Fig. 3 and Fig. 4, describes in detail to the data transmission procedure of Echo Port agreement below.
Prime module (for example, the video pretreatment unit in 103, the video post-processing unit in 203) is if for example wanted, to rear class module (, the coding and decoding video engine in 103, the IDMA in 203) transmission data:
First, prime module need to send inquiry (Query) message to rear class module, when sending Query message, also needs to send for describing the attribute information of the data that will transmit to rear class module; Attribute information is only only effectively when Query message sends, take Fig. 3 as example, and Info is only only effectively during Query is height, and remains unchanged when not receiving Ready;
Rear class module determines whether to receive data, if can receive, to prime module, returns to preparation (Ready) message;
Prime module is received after Ready message, just can start (Data) to rear class module transmission data; Preferably, can also be in transfer of data, to rear class module, send the effective message of identification data (Data_en), this message represents, in the data of present clock bat, is effective.
Certainly, above-mentioned Echo Port agreement is only a kind of exemplary execution mode.In the specific embodiment of the present invention, adopt other protocol configuration port to be also fine, the present invention is not construed as limiting this.
Another embodiment of the invention provides a kind of video preprocessing system, as shown in Figure 5, comprising:
IDMA(501), for from External memory equipment reading images initial data, and by IDS, original image data is transferred to video pretreatment unit (502);
Video pretreatment unit (502), for original image data is carried out to video pre-treatment, and transfers to coding and decoding video engine (503) by the view data through video pre-treatment by IDS;
Coding and decoding video engine (503), for processing that the view data of process video pre-treatment is encoded.
Another embodiment of the invention provides a kind of video after-treatment system, as shown in Figure 6, comprising:
Coding and decoding video engine (601), for the processing of decoding from External memory equipment reads image data, and the image data transmission of process being decoded by IDS is to video post-processing unit (602);
Video post-processing unit (602), for the view data of process decoding is carried out to video reprocessing, and transfers to IDMA(603 by the view data through video reprocessing by IDS);
IDMA(603), for the view data through video reprocessing is write to External memory equipment.
The front/rear treatment system of video that adopts embodiment of the present invention to provide, can reduce the frequency reading and writing data from External memory equipment, thereby reduces the occupation proportion of bus bandwidth, alleviates the power consumption of equipment.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (12)
1. a video pre-treating method, is characterized in that, comprising:
Image direct memory access IDMA reading images initial data from External memory equipment;
By view data selector, IDS transfers to video pretreatment unit by original image data;
After video pretreatment unit is handled, the view data through video pre-treatment is transferred to the processing of encoding of coding and decoding video engine by IDS.
2. method according to claim 1, is characterized in that, describedly by IDS, original image data is transferred to video pretreatment unit, comprising:
Described IDMA, by output port, transfers to described IDS by described original image data;
Described IDS transfers to video pretreatment unit by described original image data again.
3. method according to claim 2, is characterized in that, described video pretreatment unit is image to be carried out to certain processing before coding to strengthen image effect or to make image meet the unit of coding requirement.
4. method according to claim 3, is characterized in that, described video pretreatment unit is one or more in image scaling unit, image noise reduction unit and image sharpening unit.
5. according to the method described in any one in claim 2-4, described port arrangement Echo Port agreement.
6. a video post-process method, is characterized in that, comprising:
The processing of decoding of coding and decoding video engine reads image data from External memory equipment;
The image data transmission of process being decoded by view data selector IDS is to video post-processing unit;
After video post-processing unit is handled, the view data through video reprocessing is transferred to image direct memory access IDMA by IDS;
IDMA writes External memory equipment by the view data through video reprocessing.
7. method according to claim 6, is characterized in that, described image data transmission of process being decoded by IDS, to video post-processing unit, comprising:
IDMA is by output port, and the image data transmission that process is decoded is to IDS;
The image data transmission that IDS decodes process is again to video post-processing unit.
8. method according to claim 7, is characterized in that, described video post-processing unit is image to be carried out to certain processing after decoding to strengthen image effect or to make image meet the unit of display requirement.
9. method according to claim 8, is characterized in that, described video post-processing unit is one or more in image scaling unit, image noise reduction unit and image sharpening unit.
10. according to the method described in any one in claim 6-9, described port arrangement Echo Port agreement.
11. 1 kinds of video preprocessing systems, is characterized in that, comprising:
Image direct memory access IDMA(501), for from External memory equipment reading images initial data, and by view data selector IDS, original image data is transferred to video pretreatment unit (502);
Video pretreatment unit (502), for original image data is carried out to video pre-treatment, and transfers to coding and decoding video engine (503) by the view data through video pre-treatment by IDS;
Coding and decoding video engine (503), for processing that the view data of process video pre-treatment is encoded.
12. 1 kinds of video after-treatment systems, is characterized in that, comprising:
Coding and decoding video engine (601), for the processing of decoding from External memory equipment reads image data, and the image data transmission of process being decoded by view data selector IDS is to video post-processing unit (602);
Video post-processing unit (602), for the view data of process decoding is carried out to video reprocessing, and transfers to image direct memory access IDMA(603 by the view data through video reprocessing by IDS);
IDMA(603), for the view data through video reprocessing is write to External memory equipment.
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Application publication date: 20140903 |