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snd_pcm_add_chmap_ctls(9) [centos man page]


snd_pcm_add_chmap_ctls - create channel-mapping control elements SYNOPSIS
int snd_pcm_add_chmap_ctls(struct snd_pcm * pcm, int stream, const struct snd_pcm_chmap_elem * chmap, int max_channels, unsigned long private_value, struct snd_pcm_chmap ** info_ret); ARGUMENTS
pcm the assigned PCM instance stream stream direction chmap channel map elements (for query) max_channels the max number of channels for the stream private_value the value passed to each kcontrol's private_value field info_ret store struct snd_pcm_chmap instance if non-NULL DESCRIPTION
Create channel-mapping control elements assigned to the given PCM stream(s). RETURN
Zero if successful, or a negative error value. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 SND_PCM_ADD_CHMAP_CT(9)

Check Out this Related Man Page

Decoder(3pm)						User Contributed Perl Documentation					      Decoder(3pm)

Audio::FLAC::Decoder - An object-oriented FLAC decoder SYNOPSIS
use Audio::FLAC::Decoder; my $decoder = Audio::FLAC::Decoder->open("song.flac"); my $buffer; while ((my $len = $decoder->sysread($buffer) > 0) { # do something with the PCM stream } OR open FLAC, "song.flac" or die $!; my $decoder = Audio::FLAC::Decoder->open(*FLAC); OR # can also be IO::Socket or any other IO::Handle subclass. my $fh = IO::Handle->new("song.flac"); my $decoder = Audio::FLAC::Decoder->open($fh); DESCRIPTION
This module provides users with Decoder objects for FLAC files. One can read data in PCM format from the stream, seek by pcm samples, or time. CONSTRUCTOR
"open ($filename)" Opens an FLAC file for decoding. It opens a handle to the file or uses an existing handle and initializes all of the internal FLAC decoding structures. Note that the object will maintain open file descriptors until the object is collected by the garbage handler. Returns "undef" on failure. INSTANCE METHODS
"sysread ($buffer, [$size])" Reads PCM data from the FLAC stream into $buffer. Returns the number of bytes read, 0 when it reaches the end of the stream, or a value less than 0 on error. The optional size can specify how many bytes to read. "raw_seek ($pos)" Seeks through the compressed bitstream to the offset specified by $pos in raw bytes. Returns 0 on success. "sample_seek ($pos)" Seeks through the bitstream to the offset specified by $pos in pcm samples. Returns 0 on success. "time_seek ($pos, [$page])" Seeks through the bitstream to the offset specified by $pos in seconds. Returns 0 on success. "bitrate ([$stream])" Returns the average bitrate for the specified logical bitstream. If $stream is left out or set to -1, the average bitrate for the entire stream will be reported. "time_total ([$stream])" Returns the total number of seconds in the bitstream. "raw_tell ()" Returns the current offset in bytes. "time_tell ()" Returns the current offset in seconds. - NOT YET IMPLEMENTED REQUIRES
Copyright (c) 2004-2008, Dan Sully. All Rights Reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. SEE ALSO
Audio::FLAC::Header perl v5.14.2 2008-11-24 Decoder(3pm)
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