A kind of video data reading and writing method and related device

Abstract

The present application discloses a method for reading and writing video data, including: according to a compression format, using a corresponding writing strategy, writing Y component, U component and V component into a FIFO array; the FIFO array includes sixteen FIFO queues; the FIFO queue The width is at least 32 bits; according to the compression format, each group of data blocks is read from the FIFO array by using the corresponding readout strategy; wherein, when each group of data blocks is read from the FIFO array, multiple data blocks are read from the FIFO queue each time. Component; each time the U component and V component are read out from the FIFO queue, the read U component and V component are buffered. The method can improve the video processing speed, reduce the FIFO capacity, and avoid problems such as timing constraints and packaging manufacturing difficulties caused by the excessively large FIFO capacity. The present application also discloses a video data reading and writing device, equipment and computer-readable storage medium, all of which have the above technical effects.

Description

technical field [0001] The present application relates to the technical field of video processing, and in particular, to a method for reading and writing video data; it also relates to a video data reading and writing device, equipment, and computer-readable storage medium. Background technique [0002] refer to figure 1 As shown in the figure, a traditional video processing method is: after the video data on the host side is transmitted to the baseboard management control chip through PCIe, the color space conversion module ( figure 1 RGB2YUV shown in) converts the original RGB format video data into YUV format data, and then uses the on-chip storage resources ( figure 1 FIFO (First Input First Output, first-in-first-out queue) shown in the buffer. According to the requirements of block format conversion (supporting YUV444 / YUV422 / YUV420 compression format), 16 Y_FIFOs (FIFOs for storing Y components), 16 U_FIFOs (FIFOs for storing U components) and 16 V_FIFOs are required...

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Problems solved by technology

Moreover, the processing speed of the above-mentioned video processing method is relatively slow, and only one component can be read in one clock cycle, which affects the speed of video processing to a certain extent, and then affects the overall performance of the chip.

[0004] In view of this, how to increase the video processing speed, reduce the FIFO capacity, and avoid problems such as timing constraints and packaging and manufacturing difficulties caused by excessive FIFO capacity has become a technical problem to be solved urgently by those skilled in the art.

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