SND_PCM_ADD_CHMAP_CT(9) PCM API SND_PCM_ADD_CHMAP_CT(9)NAME
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
roar_simple_new_stream(3) System Manager's Manual: RoarAudio roar_simple_new_stream(3)NAME
roar_simple_new_stream, roar_simple_new_stream_obj - Create a new stream via RoarAudio
SYNOPSIS
#include <roaraudio.h>
int roar_simple_new_stream(struct roar_connection * con, int rate, int channels, int bits, int codec, int dir);
int roar_simple_new_stream_obj(struct roar_connection * con, struct roar_stream * s, int rate, int channels, int bits, int codec, int dir);
DESCRIPTION
Opens a new stream to the sound server as a independet file handle (not an execed one). This is useful if you still want some meta data or
the volume to be updated after the stream is open.
This functions are marked obsolete and will be removed in later releases. Please upgrade to VS API. See roar_vs_new_simple(3).
PARAMETERS
con The "parent" connection. This is a valid open control connection as opend via roar_simple_connect(3).
s The stream object to be updated to corresponde to the new stream. This is useful if use want to update some meta data after the
stream has be opened as you can use all controll commands on this object.
rate, channels, bits, codec
For an explanation on these parameters see roar_simple_play(3).
dir For an explanation on this parameter see roar_simple_stream(3).
RETURN VALUE
On success these calls return a new filehandle. On error, -1 is returned.
EXAMPLES
An example of the use of roar_simple_new_stream_obj() can be found on roarvorbis(1) code.
SEE ALSO roar_vs_new_simple(3), roar_simple_connect(3), roar_simple_play(3), roar_simple_close(3), libroar(7), RoarAudio(7).
RoarAudio May 2011 roar_simple_new_stream(3)
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