Decoded data acquisition method and apparatus, device and storage medium

The method according to claim wherein the first storage space comprises:

• a first sub-storage space and a second sub-storage space;
• in response to the first storage space being a graphics memory, the first sub-storage space is a dedicated graphics memory, and the second sub-storage space is a shared graphics memory;
• and
• the multi-level caching strategy further comprises:
• caching the decoded data of the target image frame in the second sub-storage space in response to decoded data of image frames having been cached in the first sub-storage space reaching an upper limit of the first sub-storage space.

An electronic device, comprising:

• a memory and a processor, wherein
• the memory is configured to store programs;
• and
• the processor is coupled to the memory, and the programs-stored when being executed, configure the processor to:
• decode a target image frame in a material track clip presented on a video editing track, to generate decoded data of the target image frame;
• store the decoded data of the target image frame into a multi-level cache space based on a multi-level caching strategy, wherein the multi-level cache space comprises at least a first storage space and a second storage space, and a read or write speed of the first storage space is greater than a read or write speed of the second storage space;
• and the multi-level caching strategy comprises:
• caching the decoded data of the target image frame in the first storage space in response to decoded data of image frames having been cached in the first storage space not reaching an upper limit of the first storage space, or caching the decoded data of the target image frame in the second storage space in response to decoded data of image frames having been cached in the first storage space reaching the upper limit of the first storage space;
• determine, in response to a preview operation triggered on the video editing track, a target storage space from the multi-level cache space in response to a timeline position of the target image frame in the material track clip being previewed, the target storage space being configured to store the decoded data of the target image frame;
• and
• read the decoded data of the target image frame from the target storage space, render the target image frame based on the decoded data, and display a preview image, in response to the decoded data of the target image frame being stored in the multi-level cache space.

A non-transitory computer-readable storage medium storing computer programs which, when executed by a computer, decoded configure the computer to:

• decode a target image frame in a material track clip presented on a video editing track, to generate decoded data of the target image frame;
• store the decoded data of the target image frame into a multi-level cache space based on a multi-level caching strategy, wherein the multi-level cache space comprises at least a first storage space and a second storage space, and a read or write speed of the first storage space is greater than a read or write speed of the second storage space;
• and the multi-level caching strategy comprises:
• caching the decoded data of the target image frame in the first storage space in response to decoded data of image frames having been cached in the first storage space not reaching an upper limit of the first storage space, or caching the decoded data of the target image frame in the second storage space in response to decoded data of image frames having been cached in the first storage space reaching the upper limit of the first storage space;
• determine, in response to a preview operation triggered on the video editing track, a target storage space from the multi-level cache space in response to a timeline position of the target image frame in the material track clip being previewed, the target storage space being configured to store the decoded data of the target image frame;
• and
• read the decoded data of the target image frame from the target storage space, render the target image frame based on the decoded data, and display a preview image, in response to the decoded data of the target image frame being stored in the multi-level cache space.