Swrconvertstruct

Swrconvertstruct is a term that may appear in some codebases or older documentation to denote a data structure used to manage audio sample rate and format conversion, typically in the context of FFmpeg’s swresample library. It is not a standard, publicly documented type in the official FFmpeg libswresample API. In modern FFmpeg usage, conversion state is handled through the SwrContext object and the swr_convert function, rather than a separate public structure named swrconvertstruct.

If a project defines a structure by this name, it is usually an internal helper used to bundle together information required for a conversion operation. Such a structure might hold references to the conversion context, input and output buffers, and bookkeeping data like the number of samples consumed or produced, and metadata about formats or channel layouts. Because it is not part of the official API, its exact fields and layout can vary between codebases and versions, and it may be renamed or removed as the project evolves.

Usage guidance: developers working with FFmpeg’s audio resampling should rely on the public API — SwrContext, swr_alloc, swr_alloc_set_opts, swr_init, and swr_convert — rather than depending on a private swrconvertstruct. If you encounter swrconvertstruct in legacy code, treat it as an internal implementation detail and refer to SwrContext and swr_convert for correct, version-stable usage.

See also: SwrContext, swr_convert, libswresample, FFmpeg audio resampling.