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Method and device for soft decoding output of video

A soft decoding and video technology, applied in the field of image processing, can solve the problems that affect the video output efficiency, and there is no direct output of video image data, etc.

Inactive Publication Date: 2010-07-07
WUXI ZGMICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] However, there are many defects in the existing design. First, the operation process of video image data conversion from YUV format to RGB format has seriously affected the efficiency of video output. Secondly, the background layer is used for interface display, such as menu , progress bar, should not be used to display video
But for the video layer dedicated to video output, there is no function of directly outputting video image data in YUV format to this layer

Method used

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  • Method and device for soft decoding output of video

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Embodiment Construction

[0027] In the embodiment of the present invention, by utilizing the internal interrupt signal of the MPEG4 decoding module, the line buffer module is driven to directly display the decoded video image data in YUV format to the video layer.

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0029] see figure 1 , is a flow chart of the method for video soft decoding output in an embodiment of the present invention, and the specific steps are as follows:

[0030] Step 101, the MPEG4 decoding module decodes the video compression data into video image data in YUV format, and stores the video image data ...

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Abstract

The invention provides a method and a device for soft decoding output of a video, and belongs to the technical field of image processing. The method comprises the following steps that: a moving pictures experts group (MPEG)4 decode module decodes video compressed data into video image data in a YUV format, and stores the video image data in the YUV format obtained by decoding in an input buffer zone of a row buffer module; the row buffer module transmits the video image data in the YUV format stored in the input buffer zone to an image transmission and processing module after receiving an interrupt signal; the image transmission and processing module transmits the video image data in the YUV format to a display control module; and the display control module displays the video image data in the YUV format to a video layer, so that the video image data in the YUV format obtained by decoding is directly displayed to the video layer.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a method and device for video soft decoding output. Background technique [0002] At present, the VC0820 chip only supports video file playback in mp4 / 3gp format, that is, it only supports hardware decoding and display output of MPEG4 video compression format data. For video compression data in formats such as RMVB (a streaming video file format developed by RealNetworks), H.264 (a new video encoding format), WMV (a streaming media format introduced by Microsoft), etc., The VC0820 chip can be decoded through the relevant software library, but there is no clear data path to display and output the decoded video image data in YUV format. The existing common practice is to convert video image data in YUV format into video image data in RGB format, and then output the video image data in RGB format to the background layer. In YUV, "Y" represents brightness, whil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26G09G3/36H04N19/44
Inventor 周健
Owner WUXI ZGMICRO ELECTRONICS CO LTD
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