/builddir/build/BUILD/alsa-lib-1.0.22/src/pcm/pcm_hw.c File Reference
PCM HW Plugin Interface.
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Functions |
int | snd_pcm_hw_open_fd (snd_pcm_t **pcmp, const char *name, int fd, int mmap_emulation, int sync_ptr_ioctl) |
| Creates a new hw PCM.
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int | snd_pcm_hw_open (snd_pcm_t **pcmp, const char *name, int card, int device, int subdevice, snd_pcm_stream_t stream, int mode, int mmap_emulation, int sync_ptr_ioctl) |
| Creates a new hw PCM.
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int | _snd_pcm_hw_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 hw PCM.
|
Detailed Description
PCM HW Plugin Interface.
- Author:
- Abramo Bagnara <abramo@alsa-project.org>
-
Jaroslav Kysela <perex@perex.cz>
- Date:
- 2000-2001
Function Documentation
Creates a new hw PCM.
- Parameters:
-
| pcmp | Returns created PCM handle |
| name | Name of PCM |
| root | Root configuration node |
| conf | Configuration node with hw PCM description |
| stream | PCM Stream |
| mode | PCM Mode |
- 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_hw_open |
( |
snd_pcm_t ** |
pcmp, |
|
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const char * |
name, |
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int |
card, |
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int |
device, |
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int |
subdevice, |
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snd_pcm_stream_t |
stream, |
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int |
mode, |
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int |
mmap_emulation, |
|
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int |
sync_ptr_ioctl | |
|
) |
| | |
Creates a new hw PCM.
- Parameters:
-
| pcmp | Returns created PCM handle |
| name | Name of PCM |
| card | Number of card |
| device | Number of device |
| subdevice | Number of subdevice |
| stream | PCM Stream |
| mode | PCM Mode |
| mmap_emulation | Obsoleted parameter |
| sync_ptr_ioctl | Use SYNC_PTR ioctl rather than mmap for control structures |
- 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_hw_open_fd |
( |
snd_pcm_t ** |
pcmp, |
|
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const char * |
name, |
|
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int |
fd, |
|
|
int |
mmap_emulation, |
|
|
int |
sync_ptr_ioctl | |
|
) |
| | |
Creates a new hw PCM.
- Parameters:
-
| pcmp | Returns created PCM handle |
| name | Name of PCM |
| fd | File descriptor |
| mmap_emulation | Obsoleted parameter |
| sync_ptr_ioctl | Boolean flag for sync_ptr ioctl |
- 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.