/builddir/build/BUILD/alsa-lib-1.0.22/src/pcm/pcm_softvol.c File Reference
PCM Soft Volume Plugin Interface.
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Functions |
int | snd_pcm_softvol_open (snd_pcm_t **pcmp, const char *name, snd_pcm_format_t sformat, int ctl_card, snd_ctl_elem_id_t *ctl_id, int cchannels, double min_dB, double max_dB, int resolution, snd_pcm_t *slave, int close_slave) |
| Creates a new SoftVolume PCM.
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int | snd_pcm_parse_control_id (snd_config_t *conf, snd_ctl_elem_id_t *ctl_id, int *cardp, int *cchannelsp, int *hwctlp) |
| Parse control element id from the config.
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int | _snd_pcm_softvol_open (snd_pcm_t **pcmp, const char *name, snd_config_t *root, snd_config_t *conf, snd_pcm_stream_t stream, int mode) |
| Creates a new Soft Volume PCM.
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Detailed Description
PCM Soft Volume Plugin Interface.
- Author:
- Takashi Iwai <tiwai@suse.de>
- Date:
- 2004
Function Documentation
Creates a new Soft Volume PCM.
- Parameters:
-
| pcmp | Returns created PCM handle |
| name | Name of PCM |
| root | Root configuration node |
| conf | Configuration node with Soft Volume PCM description |
| stream | Stream type |
| mode | Stream mode |
- Return values:
-
| zero | on success otherwise a negative error code |
- Warning:
- Using of this function might be dangerous in the sense of compatibility reasons. The prototype might be freely changed in future.
int snd_pcm_softvol_open |
( |
snd_pcm_t ** |
pcmp, |
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const char * |
name, |
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snd_pcm_format_t |
sformat, |
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int |
ctl_card, |
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snd_ctl_elem_id_t * |
ctl_id, |
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int |
cchannels, |
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double |
min_dB, |
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double |
max_dB, |
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int |
resolution, |
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snd_pcm_t * |
slave, |
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int |
close_slave | |
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) |
| | |
Creates a new SoftVolume PCM.
- Parameters:
-
| pcmp | Returns created PCM handle |
| name | Name of PCM |
| sformat | Slave format |
| ctl_card | card index of the control |
| ctl_id | The control element |
| cchannels | PCM channels |
| min_dB | minimal dB value |
| max_dB | maximal dB value |
| resolution | resolution of control |
| slave | Slave PCM handle |
| close_slave | When set, the slave PCM handle is closed with copy PCM |
- Return values:
-
| zero | on success otherwise a negative error code |
- Warning:
- Using of this function might be dangerous in the sense of compatibility reasons. The prototype might be freely changed in future.