pods::SDL::AudioCVT(3)User Contributed Perl Documentatiopods::SDL::AudioCVT(3)NAME
SDL::AudioCVT -- Audio Conversion Structure
CATEGORY
Core, Audio, Structure
SYNOPSISDESCRIPTION
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 possible
src_format
Audio format of the source
dest_format
Audio format of the destination
rate_incr
Rate conversion increment
len
Length of the original audio buffer in bytes
len_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.
perl v5.18.1 2013-09-28 pods::SDL::AudioCVT(3)
