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| pods::SDL::AudioCVT(3) | User Contributed Perl Documentation | pods::SDL::AudioCVT(3) |
NAME
SDL::AudioCVT -- Audio Conversion StructureCATEGORY
Core, Audio, StructureSYNOPSIS
DESCRIPTION
The "SDL::AudioCVT" is used to convert audio data between different formats. A "SDL::AudioCVT" structure is created with the "SDL::AudioCVT-"build> function, while the actual conversion is done by the "SDL::Audio::convert_audio" function.METHODS
new
This constructor returns an empty "SDL::AudioCVT" structure.build
$cvt = SDL::AudioCVT->build( $src_format, $src_channels, $src_rate
$dst_format, $dst_channels, $dst_rate );
Before an "SDL::AudioCVT" structure can be used to convert audio data it must be initialized with source and destination information.
"src_format" and "dst_format" are the source and destination format of the conversion. (For information on audio formats see "SDL::AudioSpec"). "src_channels" and "dst_channels" are the number of channels in the source and destination formats. Finally, "src_rate" and "dst_rate" are the frequency or samples-per-second of the source and destination formats. Once again, see "SDL::AudioSpec".
Currently (SDL-1.2.11) only rate conversions of 2x and (1/2)x with x > 0 are done, nearing the requested rate conversion.
See "SDL::Audio::convert_audio".
needed
Set to one if the conversion is possiblesrc_format
Audio format of the sourcedest_format
Audio format of the destinationrate_incr
Rate conversion incrementlen
Length of the original audio buffer in byteslen_cvt
Length of converted audio buffer in bytes (calculated)len_mult
"buf" must be "len*len_mult" bytes in size (calculated)len_ratio
Final audio size is "len*len_ratio"AUTHORS
See "AUTHORS" in SDL.| 2022-06-07 | perl v5.32.1 |
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