CN103731672A - Audio and video decoding method and smart television - Google Patents
Audio and video decoding method and smart television Download PDFInfo
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- CN103731672A CN103731672A CN201310713107.6A CN201310713107A CN103731672A CN 103731672 A CN103731672 A CN 103731672A CN 201310713107 A CN201310713107 A CN 201310713107A CN 103731672 A CN103731672 A CN 103731672A
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Abstract
The embodiment of the invention provides an audio and video decoding method and a smart television, and relates to the field of audio and video processing. Cost of the smart television can be reduced, and image quality of videos played by the smart television is improved. The audio and video decoding method includes the steps of obtaining audio and video files and calling a third-party soft solution library to carry out software decoding on the audio and video files. The audio and video decoding method is used for the smart television to carry out software decoding on the audio and video files.
Description
Technical field
The present invention relates to audio frequency and video process field, relate in particular to a kind of method and intelligent television of audio/video decoding.
Background technology
Common audio/video decoding mode is divided into hardware decoding and software decode two classes, for video file, hardware decoding is that the video of the video card that configures by terminal accelerates function video is decoded, generally, the GPU(Graphic Processing Unit of video card, graphic process unit)/VPU(Vedio Processing Unit, VPU) be more suitable for doing this big data quantity of video decode, the repeated work of low difficulty, therefore by video decode work, giving video card does, can be by the CPU(central processing unit of terminal, central processing unit) from heavy video decode computing, discharge, make terminal possess the ability of smooth playing HD video, software decode is to utilize the CPU of terminal to complete the decoding to video file, compared to hardware, decode, the shared cpu resource of software decode is higher, and the power dissipation ratio in video decoding process is larger, but software decode cost is less, for same video file, adopt the image quality of software decode to be better than the image quality that adopts hardware to decode.Same, for audio file, hardware decoding is that the audio decoder chip configuring by terminal is decoded to audio frequency, and software decode is to utilize the CPU of terminal to complete the decoding to audio file, and compared to hardware decoding, the cost of software decode is less.
Development along with television set, intelligent television will be more and more universal, and the processing speed of the CPU configuring in intelligent television is also more and more higher, but existing intelligent television is to decode to realize the decoding to audio frequency and video by hardware, therefore intelligent television cost is higher, and the image quality of displaying video is poor.
Summary of the invention
Embodiments of the invention provide a kind of video/audio decoding method and intelligent television, can reduce the cost of intelligent television, improve the image quality of intelligent television displaying video.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, provides the method for audio/video decoding, for intelligent television, comprising:
Obtain audio-video document.
Call the soft Xie Ku of third party described audio-video document is carried out to software decode.
Second aspect, provides a kind of intelligent television, comprising:
Acquiring unit, for obtaining audio-video document.
Call unit, carries out software decode for calling the described audio-video document that the soft Xie Ku of third party obtains described acquiring unit.
The video/audio decoding method that the embodiment of the present invention provides and intelligent television, described video/audio decoding method, comprising: obtain audio-video document; Call the soft Xie Ku of third party audio-video document is carried out to software decode.So, after intelligent television gets audio-video document, adopt the mode of software decode to decode to this audio-video document, make to adopt the cost of the intelligent television of software decode, improved the image quality of the displaying video of this intelligent television simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
A kind of video/audio decoding method flow chart that Fig. 1 provides for the embodiment of the present invention;
The another kind of video/audio decoding method flow chart that Fig. 2 provides for the embodiment of the present invention;
Another video/audio decoding method flow chart that Fig. 3 provides for the embodiment of the present invention;
A kind of intelligent television structural representation that Fig. 4 provides for the embodiment of the present invention;
The another kind of intelligent television structural representation that Fig. 5 provides for the embodiment of the present invention;
Another intelligent television structural representation that Fig. 6 provides for the embodiment of the present invention;
Another intelligent television structural representation that Fig. 7 provides for the embodiment of the present invention.
Embodiment
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 only 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.
Embodiment mono-
The embodiment of the present invention provides a kind of method of audio/video decoding, for intelligent television, as shown in Figure 1, comprising:
Example, can detect the coded system of audio-video document; When the coded system of audio-video document is audio/video encoding standard AVS coding, calls the soft Xie Ku of third party AVS audio-video document is carried out to software decode; When the coded system of audio-video document is multi-sound channel digital audio encryption algorithm DRA coding, calls the soft Xie Ku of third party DRA audio-video document is carried out to software decode.
So, after intelligent television gets audio-video document, adopt the mode of software decode to decode to this audio-video document, make to adopt the cost of the intelligent television of software decode, improved the image quality of the displaying video of this intelligent television simultaneously.
Embodiment bis-
The embodiment of the present invention provides a kind of video/audio decoding method, and for intelligent television, the present embodiment be take intelligent television need to play the first audio frequency and video as example describes, and as shown in Figure 2, comprising:
The mode that intelligent television obtains the first audio frequency and video is varied, and conventional is to receive the TV signal that TV station sends, and also can receive by network and download required audio-video document, or be connected with PC, directly reads the video file on this computer.
The first audio-video document playing request of step 202, reception user input, execution step 203.
After intelligent television has obtained the first audio frequency and video, need to the first audio frequency and video, process according to user's request, wherein modal is exactly broadcasting to the first audio frequency and video, therefore, intelligent television can be accepted the first audio frequency and video playing request of user's input, and the first audio frequency and video playing request indicating intelligent TV is carried out and play the first audio frequency and video.
Need to illustrate, the coded system of audio-video document just refers to by specific compress technique, original audio-video document is converted to the mode of the audio-video document of another kind of form, the Important Problems of its solution is audio frequency and video mass data to be carried out to the problem of compression coding, the primary data that mass data is audio-video document or the information source of audio-video document.It to the coding of audio-video document, is the prerequisite of the links such as audio frequency and video are transmitted, storage, broadcasting.Example, in prior art, in order to realize image more clearly, show, need to be first to original video signal digitization, but while transmitting after video signal digitization, the data bandwidth taking is very large, conventionally at 20MB/ more than second, intelligent television is difficult to it to preserve and process, so conventionally need to encode to video file, after Video coding, the data bandwidth taking can drop to 1-10MB/ second, intelligent television just can be preserved and process it like this, same, in order to improve the antijamming capability of audio file in transmitting procedure, increase audio frequency dynamic range, need to be first to audio file digitlization, but during the audio file transmissions after digitlization, occupied bandwidth is larger, and intelligent television is difficult to it to preserve and process, so conventionally need to encode to audio file.Therefore, first intelligent television, before audio-video document is carried out to broadcasting, need to detect the coded system of audio-video document, so that audio-video document is decoded according to the coded system of audio-video document.
Concrete, before playing the first audio frequency and video, first by calling the soft Xie Ku of third party, the first audio-video document is decoded.As shown in Figure 3, existing audio/video coding mode is varied, will call the soft Xie Ku of different third parties realize the decoding to audio-video document for the audio-video document that adopts different coding mode.
The coded system of step 2031, detection the first audio frequency and video, when the coded system of the first audio frequency and video is DRA coding, execution step 2032; When the coded system of the first audio frequency and video is AVS coding, execution step 2033.
After receiving the first audio frequency and video playing request of user's input, in order to select suitable decoding process, the first audio frequency and video are decoded, after receiving the first audio frequency and video playing request of user's input, first need to judge whether the coded system of the first audio-video document is default coded system.
When intelligent television need to be play the first audio frequency and video, and the first audio frequency and video are while adopting the audio file of DRA coding, need to call the soft Xie Ku of third party DRA decodes to the first audio frequency and video, the database that the audio file that can encode to employing DRA being provided by third party carry out software decode is provided the soft Xie Ku of third party DRA, wherein comprise the software program of the audio frequency of DRA coding being carried out to decoding, can complete the software decode to the audio file of DRA coding.Intelligent television, by calling the soft Xie Ku of third party DRA to after the first audio/video decoding, obtains decoded the first audio frequency and video.
Generally, the interface that the soft Xie Ku of third party DRA provides is FFmpeg type, but the decoding interface type of intelligent television is OMX IL type, therefore calling before the soft Xie Ku of third party DRA decodes to the first audio frequency and video, also need first the output interface of FFmpeg type to be converted into OMX IL type, concrete, in can be in the system of intelligent television included " soft OMX Plugin(software OMX plug-in unit) ", write an interface conversion module " soft DRA(software DRA) ", this interface conversion module " soft DRA " provide the OMX IL interface of type to intelligent television, the soft Xie Ku of third party DRA is provided to the interface of FFmpeg type, therefore the interface that can realize between the interface of FFmpeg type and the interface of OMX IL type transforms, so that can calling the soft Xie Ku of third party DRA, intelligent television realizes the decoding to the first audio frequency and video.
When intelligent television need to be play the first audio frequency and video, and the first audio frequency and video are while adopting the video file of AVS coding, need to call the soft Xie Ku of third party AVS decodes to the first audio frequency and video, the database that the video file that can encode to employing AVS being provided by third party carry out software decode is provided the soft Xie Ku of third party AVS, wherein comprise the software program of the video of AVS coding being carried out to decoding, can complete the software decode to the video file of AVS coding.Intelligent television, by calling the soft Xie Ku of third party AVS to after the first audio/video decoding, obtains decoded the first audio frequency and video.
Generally, the interface that the soft Xie Ku of third party AVS provides is FFmpeg type, but the decoding interface type of intelligent television is OMX IL type, therefore calling before the soft Xie Ku of third party AVS decodes to the first audio frequency and video, also need first the output interface of FFmpeg type to be converted into OMX IL type, concrete, in can be in the system of intelligent television included " soft OMX Plugin(software OMX plug-in unit) ", write an interface conversion module " soft AVS(software AVS) ", this interface conversion module " soft AVS " provide the OMX IL interface of type to intelligent television, the soft Xie Ku of third party AVS is provided to the interface of FFmpeg type, therefore the interface that can realize between the interface of FFmpeg type and the interface of OMX IL type transforms, so that can calling the soft Xie Ku of third party AVS, intelligent television realizes the decoding to the first audio frequency and video.
The first audio frequency and video after step 204, broadcast decoder.
Obtain after decoding after the first audio frequency and video, this audio-video document can be read by intelligent television, so intelligent television can complete the broadcasting to the first audio frequency and video, meets user's broadcasting demand.
The video/audio decoding method that the embodiment of the present invention provides, after intelligent television gets audio-video document, by calling the soft Xie Ku of third party, this audio-video document is carried out to software decode, the interface that can realize between the soft Xie Ku of third party and intelligent television transforms simultaneously, make to adopt the cost of the intelligent television of software decode, improved the image quality of the displaying video of this intelligent television simultaneously.
Embodiment tri-
The embodiment of the present invention provides a kind of intelligent television 40, as shown in Figure 4, comprising:
Acquiring unit 401, for obtaining audio-video document.
Call unit 402, carries out software decode for calling the audio-video document that the soft Xie Ku of third party obtains acquiring unit 401.
So, after intelligent television gets audio-video document by acquiring unit, by call unit, adopt the mode of software decode to decode to this audio-video document, make to adopt the cost of the intelligent television of software decode, improved the image quality of the displaying video of this intelligent television simultaneously.
As shown in Figure 5, intelligent television 40 also comprises detecting unit 403, and detecting unit 403 is for detection of the coded system of this audio-video document.
Described call unit 402 specifically for:
When the coded system of audio-video document is audio/video encoding standard AVS coding, calls the soft Xie Ku of third party AVS audio-video document is carried out to software decode; When the coded system of audio-video document is multi-sound channel digital audio encryption algorithm DRA coding, calls the soft Xie Ku of third party DRA audio-video document is carried out to software decode.
Generally, the output interface type of the soft Xie Ku of third party is FFmpeg type, and therefore as shown in Figure 6, intelligent television 40 also comprises conversion unit 404, and conversion unit 404 is for being converted into the output interface of FFmpeg type OMX IL type.
As shown in Figure 7, intelligent television 40 also comprises:
Receiving element 405, for receiving user's audio frequency and video playing request, audio frequency and video playing request indicating intelligent TV 40 is play this audio-video document.
The intelligent television that the embodiment of the present invention provides, after the acquiring unit of intelligent television gets audio-video document, by call unit, call the soft Xie Ku of third party this audio-video document is carried out to software decode, the interface that conversion unit can be realized between the soft Xie Ku of third party and intelligent television simultaneously transforms, make the cost of this intelligent television, improved the image quality of the displaying video of this intelligent television simultaneously.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of program command, aforesaid program can be stored in a computer read/write memory medium, this program, when carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (8)
1. a method for audio/video decoding, for intelligent television, is characterized in that, comprising:
Obtain audio-video document;
Call the soft Xie Ku of third party described audio-video document is carried out to software decode.
2. method according to claim 1, is characterized in that, described in call the soft Xie Ku of third party and described audio-video document is carried out to software decode comprise:
Detect the coded system of described audio-video document;
When the coded system of described audio-video document is audio/video encoding standard AVS coding, calls the soft Xie Ku of third party AVS described audio-video document is carried out to software decode;
When the coded system of described audio-video document is multi-sound channel digital audio encryption algorithm DRA coding, calls the soft Xie Ku of third party DRA described audio-video document is carried out to software decode.
3. method according to claim 1, is characterized in that, the output interface type of the soft Xie Ku of described third party is FFmpeg type,
Before the soft Xie Ku of the described third party of calling decodes to described audio-video document, described method also comprises:
The output interface of described FFmpeg type is converted into OMX IL type.
4. method according to claim 2, is characterized in that, before the coded system of the described audio-video document of described detection, described method also comprises:
The audio frequency and video playing request that receives user, described audio frequency and video playing request indicates described intelligent television to play described audio-video document.
5. an intelligent television, is characterized in that, comprising:
Acquiring unit, for obtaining audio-video document;
Call unit, carries out software decode for calling the described audio-video document that the soft Xie Ku of third party obtains described acquiring unit.
6. intelligent television according to claim 5, is characterized in that, described intelligent television also comprises detecting unit, and described detecting unit is for detection of the coded system of described audio-video document;
Described call unit specifically for:
When the coded system of described audio-video document is audio/video encoding standard AVS coding, calls the soft Xie Ku of third party AVS described audio-video document is carried out to software decode;
When the coded system of described audio-video document is multi-sound channel digital audio encryption algorithm DRA coding, calls the soft Xie Ku of third party DRA described audio-video document is carried out to software decode.
7. intelligent television according to claim 5, is characterized in that,
The output interface type of the soft Xie Ku of described third party is FFmpeg type,
Described intelligent television also comprises conversion unit, and described conversion unit is for being converted into OMX IL type by the output interface of described FFmpeg type.
8. intelligent television according to claim 6, is characterized in that, described intelligent television also comprises:
Receiving element, for receiving user's audio frequency and video playing request, described audio frequency and video playing request indicates described intelligent television to play described audio-video document.
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Application publication date: 20140416 |