SDL::AudioCVT -- Audio Conversion Structure
Core, Audio, Structure
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
This constructor returns an empty
$cvt = SDL::AudioCVT->build( $src_format, $src_channels, $src_rate $dst_format, $dst_channels, $dst_rate );
SDL::AudioCVT structure can be used to convert audio data it must be initialized with source and destination information.
dst_format are the source and destination format of the conversion. (For information on audio formats see
dst_channels are the number of channels in the source and destination formats.
dst_rate are the frequency or samples-per-second of the source and destination formats. Once again,
Currently (SDL-1.2.11) only rate conversions of 2x and (1/2)x with x > 0 are done, nearing the requested rate conversion.
Set to one if the conversion is possible
Audio format of the source
Audio format of the destination
Rate conversion increment
Length of the original audio buffer in bytes
Length of converted audio buffer in bytes (calculated)
buf must be
len*len_mult bytes in size (calculated)
Final audio size is