Method for processing ultralong caption data

Abstract

The invention discloses a method for processing ultralong caption data, which is characterized by comprising the following steps: a terminal allocates the memory to caption images to form a memory linked list and plays the memory block caption of the memory linked list; the terminal removes a pointer of the memory block from the head of the memory linked list to the tail of the linked list; the head of the memory linked list points at the next memory block; the terminal records a blank pointer of the memory block which is the pointer which is in the unfilled area of the current memory block and is recorded when a certain character can not be completely rendered in the current memory block, and then the terminal enters the next memory block and starts rendering from the character. A plurality of memory blocks with fixed sizes are adopted to allocate memory for caption images, so that large memory needed by ultralong caption can be realized by updating memory images by the plurality of memory blocks; thus reducing the render time of the images and ensuring smooth display of the real-time dynamic caption; every character in the memory blocks can be completely rendered without flaws caused by boundary characters.

Description

technical field [0001] The invention relates to the field of broadcasting and television, in particular to a method for processing ultra-long subtitle data. Background technique [0002] Computer subtitles and graphics technology have been widely used in radio, film and television fields. For example, the application of subtitle graphics involves all aspects of TV program production, including news live broadcast, studio, all variety shows, sports, finance, weather, etc., as well as the production of film and television dramas. Subtitle graphics are the most commonly used elements in the production, post and editing domains, studio and playout lines. With the wide application of subtitles, according to different functions and effects, subtitles can be divided into ordinary subtitles, libretto subtitles and scrolling subtitles. A subtitle is an image rendered by a computer to render text symbols into specific visual effects. The size of the image depends on the size and num...

AI Technical Summary

Problems solved by technology

[0004] The following problems may occur when rendering characters into a block of memory at a time, including: super long subtitles require a large block of memory, and the memory area is always limited, which may cause stack buffer overflow, resulting in failure to allocate large blocks of memory; larger images render The longer the time, the real-time dynamic subtitles may cause the subtitles to be broadcast unsmoothly and have a sense of pause; under a fixed-size memory block, there will inevitably appear boundary characters that cross two memory blocks. Flaws appear when splicing the same character rendered by two memory blocks separately

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