Collaboration diagram for Stream Information:
Macros | |
| #define | snd_pcm_info_alloca(ptr) |
| allocate an invalid snd_pcm_info_t using standard alloca More... | |
Functions | |
| size_t | snd_pcm_info_sizeof (void) |
| get size of snd_pcm_info_t More... | |
| int | snd_pcm_info_malloc (snd_pcm_info_t **ptr) |
| allocate an invalid snd_pcm_info_t using standard malloc More... | |
| void | snd_pcm_info_free (snd_pcm_info_t *obj) |
| frees a previously allocated snd_pcm_info_t More... | |
| void | snd_pcm_info_copy (snd_pcm_info_t *dst, const snd_pcm_info_t *src) |
| copy one snd_pcm_info_t to another More... | |
| unsigned int | snd_pcm_info_get_device (const snd_pcm_info_t *obj) |
| Get device from a PCM info container. More... | |
| unsigned int | snd_pcm_info_get_subdevice (const snd_pcm_info_t *obj) |
| Get subdevice from a PCM info container. More... | |
| snd_pcm_stream_t | snd_pcm_info_get_stream (const snd_pcm_info_t *obj) |
| Get stream (direction) from a PCM info container. More... | |
| int | snd_pcm_info_get_card (const snd_pcm_info_t *obj) |
| Get card from a PCM info container. More... | |
| const char * | snd_pcm_info_get_id (const snd_pcm_info_t *obj) |
| Get id from a PCM info container. More... | |
| const char * | snd_pcm_info_get_name (const snd_pcm_info_t *obj) |
| Get name from a PCM info container. More... | |
| const char * | snd_pcm_info_get_subdevice_name (const snd_pcm_info_t *obj) |
| Get subdevice name from a PCM info container. More... | |
| snd_pcm_class_t | snd_pcm_info_get_class (const snd_pcm_info_t *obj) |
| Get class from a PCM info container. More... | |
| snd_pcm_subclass_t | snd_pcm_info_get_subclass (const snd_pcm_info_t *obj) |
| Get subclass from a PCM info container. More... | |
| unsigned int | snd_pcm_info_get_subdevices_count (const snd_pcm_info_t *obj) |
| Get subdevices count from a PCM info container. More... | |
| unsigned int | snd_pcm_info_get_subdevices_avail (const snd_pcm_info_t *obj) |
| Get available subdevices count from a PCM info container. More... | |
| snd_pcm_sync_id_t | snd_pcm_info_get_sync (const snd_pcm_info_t *obj) |
| Get hardware synchronization ID from a PCM info container. More... | |
| void | snd_pcm_info_set_device (snd_pcm_info_t *obj, unsigned int val) |
| Set wanted device inside a PCM info container (see snd_ctl_pcm_info) More... | |
| void | snd_pcm_info_set_subdevice (snd_pcm_info_t *obj, unsigned int val) |
| Set wanted subdevice inside a PCM info container (see snd_ctl_pcm_info) More... | |
| void | snd_pcm_info_set_stream (snd_pcm_info_t *obj, snd_pcm_stream_t val) |
| Set wanted stream inside a PCM info container (see snd_ctl_pcm_info) More... | |
Detailed Description
See the PCM (digital audio) interface page for more details.
Macro Definition Documentation
◆ snd_pcm_info_alloca
| #define snd_pcm_info_alloca | ( | ptr | ) |
allocate an invalid snd_pcm_info_t using standard alloca
- Parameters
-
ptr returned pointer
Function Documentation
◆ snd_pcm_info_copy()
| void snd_pcm_info_copy | ( | snd_pcm_info_t * | dst, |
| const snd_pcm_info_t * | src | ||
| ) |
copy one snd_pcm_info_t to another
- Parameters
-
dst pointer to destination src pointer to source
◆ snd_pcm_info_free()
| void snd_pcm_info_free | ( | snd_pcm_info_t * | obj | ) |
frees a previously allocated snd_pcm_info_t
- Parameters
-
obj pointer to object to free
◆ snd_pcm_info_get_card()
| int snd_pcm_info_get_card | ( | const snd_pcm_info_t * | obj | ) |
Get card from a PCM info container.
- Parameters
-
obj PCM info container
- Returns
- card number otherwise a negative error code if not associable to a card
◆ snd_pcm_info_get_class()
| snd_pcm_class_t snd_pcm_info_get_class | ( | const snd_pcm_info_t * | obj | ) |
Get class from a PCM info container.
- Parameters
-
obj PCM info container
- Returns
- class of PCM
◆ snd_pcm_info_get_device()
| unsigned int snd_pcm_info_get_device | ( | const snd_pcm_info_t * | obj | ) |
Get device from a PCM info container.
- Parameters
-
obj PCM info container
- Returns
- device number
◆ snd_pcm_info_get_id()
| const char * snd_pcm_info_get_id | ( | const snd_pcm_info_t * | obj | ) |
Get id from a PCM info container.
- Parameters
-
obj PCM info container
- Returns
- short id of PCM
◆ snd_pcm_info_get_name()
| const char * snd_pcm_info_get_name | ( | const snd_pcm_info_t * | obj | ) |
Get name from a PCM info container.
- Parameters
-
obj PCM info container
- Returns
- name of PCM
◆ snd_pcm_info_get_stream()
| snd_pcm_stream_t snd_pcm_info_get_stream | ( | const snd_pcm_info_t * | obj | ) |
Get stream (direction) from a PCM info container.
- Parameters
-
obj PCM info container
- Returns
- stream
◆ snd_pcm_info_get_subclass()
| snd_pcm_subclass_t snd_pcm_info_get_subclass | ( | const snd_pcm_info_t * | obj | ) |
Get subclass from a PCM info container.
- Parameters
-
obj PCM info container
- Returns
- subclass of PCM
◆ snd_pcm_info_get_subdevice()
| unsigned int snd_pcm_info_get_subdevice | ( | const snd_pcm_info_t * | obj | ) |
Get subdevice from a PCM info container.
- Parameters
-
obj PCM info container
- Returns
- subdevice number
◆ snd_pcm_info_get_subdevice_name()
| const char * snd_pcm_info_get_subdevice_name | ( | const snd_pcm_info_t * | obj | ) |
Get subdevice name from a PCM info container.
- Parameters
-
obj PCM info container
- Returns
- name of used PCM subdevice
◆ snd_pcm_info_get_subdevices_avail()
| unsigned int snd_pcm_info_get_subdevices_avail | ( | const snd_pcm_info_t * | obj | ) |
Get available subdevices count from a PCM info container.
- Parameters
-
obj PCM info container
- Returns
- available subdevices count of PCM
◆ snd_pcm_info_get_subdevices_count()
| unsigned int snd_pcm_info_get_subdevices_count | ( | const snd_pcm_info_t * | obj | ) |
Get subdevices count from a PCM info container.
- Parameters
-
obj PCM info container
- Returns
- subdevices total count of PCM
◆ snd_pcm_info_get_sync()
| snd_pcm_sync_id_t snd_pcm_info_get_sync | ( | const snd_pcm_info_t * | obj | ) |
Get hardware synchronization ID from a PCM info container.
- Parameters
-
obj PCM info container
- Returns
- hardware synchronization ID
◆ snd_pcm_info_malloc()
| int snd_pcm_info_malloc | ( | snd_pcm_info_t ** | ptr | ) |
allocate an invalid snd_pcm_info_t using standard malloc
- Parameters
-
ptr returned pointer
- Returns
- 0 on success otherwise negative error code
◆ snd_pcm_info_set_device()
| void snd_pcm_info_set_device | ( | snd_pcm_info_t * | obj, |
| unsigned int | val | ||
| ) |
Set wanted device inside a PCM info container (see snd_ctl_pcm_info)
- Parameters
-
obj PCM info container val Device number
◆ snd_pcm_info_set_stream()
| void snd_pcm_info_set_stream | ( | snd_pcm_info_t * | obj, |
| snd_pcm_stream_t | val | ||
| ) |
Set wanted stream inside a PCM info container (see snd_ctl_pcm_info)
- Parameters
-
obj PCM info container val Stream
◆ snd_pcm_info_set_subdevice()
| void snd_pcm_info_set_subdevice | ( | snd_pcm_info_t * | obj, |
| unsigned int | val | ||
| ) |
Set wanted subdevice inside a PCM info container (see snd_ctl_pcm_info)
- Parameters
-
obj PCM info container val Subdevice number
◆ snd_pcm_info_sizeof()
| size_t snd_pcm_info_sizeof | ( | void | ) |
get size of snd_pcm_info_t
- Returns
- size in bytes
