/usr/lib/x86_64-linux-gnu/perl5/5.26/pods/SDL/AudioCVT.pod is in libsdl-perl 2.546-3build1.
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=head1 NAME
SDL::AudioCVT -- Audio Conversion Structure
=head1 CATEGORY
Core, Audio, Structure
=head1 SYNOPSIS
=head1 DESCRIPTION
The C<SDL::AudioCVT> is used to convert audio data between different formats. A C<SDL::AudioCVT> structure is created with the
C<SDL::AudioCVT->build> function, while the actual conversion is done by the C<SDL::Audio::convert_audio> function.
=head1 METHODS
=head2 new
This constructor returns an empty C<SDL::AudioCVT> structure.
=head2 build
$cvt = SDL::AudioCVT->build( $src_format, $src_channels, $src_rate
$dst_format, $dst_channels, $dst_rate );
Before an C<SDL::AudioCVT> structure can be used to convert audio data it must be initialized with source and destination information.
C<src_format> and C<dst_format> are the source and destination format of the conversion. (For information on audio formats see
C<SDL::AudioSpec>). C<src_channels> and C<dst_channels> are the number of channels in the source and destination formats.
Finally, C<src_rate> and C<dst_rate> are the frequency or samples-per-second of the source and destination formats. Once again,
see C<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 C<SDL::Audio::convert_audio>.
=head2 needed
Set to one if the conversion is possible
=head2 src_format
Audio format of the source
=head2 dest_format
Audio format of the destination
=head2 rate_incr
Rate conversion increment
=head2 len
Length of the original audio buffer in bytes
=head2 len_cvt
Length of converted audio buffer in bytes (calculated)
=head2 len_mult
C<buf> must be C<len*len_mult> bytes in size (calculated)
=head2 len_ratio
Final audio size is C<len*len_ratio>
=head1 AUTHORS
See L<SDL/AUTHORS>.
=cut
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