include/sound/pcm.h

6  *  Digital Audio (PCM) abstract layer
22 #define snd_pcm_chip(pcm) ((pcm)->private_data)  argument
465 	struct snd_pcm *pcm;  member
467 	void *private_data;		/* copied from pcm->private_data */
515 	struct snd_pcm *pcm;  member
547 	void (*private_free) (struct snd_pcm *pcm);
548 	bool internal; /* pcm is for internal use only */
549 	bool nonatomic; /* whole PCM operations are in non-atomic context */
568 int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count);
572 	int (*n_register) (struct snd_pcm * pcm);
573 	int (*n_disconnect) (struct snd_pcm * pcm);
574 	int (*n_unregister) (struct snd_pcm * pcm);
594 int snd_pcm_suspend_all(struct snd_pcm *pcm);
596 static inline int snd_pcm_suspend_all(struct snd_pcm *pcm)  in snd_pcm_suspend_all()  argument
602 int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, struct file *file,
605 int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, struct file *file,
623  *  PCM library
645  * snd_pcm_stream_lock_irqsave - Lock the PCM stream
646  * @substream: PCM substream
649  * This locks the PCM stream like snd_pcm_stream_lock() but with the local
662  * snd_pcm_stream_lock_irqsave_nested - Single-nested PCM stream locking
663  * @substream: PCM substream
666  * This locks the PCM stream like snd_pcm_stream_lock_irqsave() but with
719  * __snd_pcm_set_state - Change the current PCM state
720  * @runtime: PCM runtime to set
734  * @runtime: PCM runtime instance
746  * @runtime: PCM runtime instance
758  * @runtime: PCM runtime instance
770  * @runtime: PCM runtime instance
782  * @runtime: PCM runtime instance
793  * snd_pcm_lib_buffer_bytes - Get the buffer size of the current PCM in bytes
794  * @substream: PCM substream
805  * snd_pcm_lib_period_bytes - Get the period size of the current PCM in bytes
806  * @substream: PCM substream
818  * @runtime: PCM runtime instance
836  * @runtime: PCM runtime instance
852  * @runtime: PCM runtime instance
863  * @runtime: PCM runtime instance
874  * @substream: the pcm substream instance
888  * @substream: the pcm substream instance
902  * @substream: the pcm substream instance
920  * @substream: the pcm substream instance
934  * @substream: the pcm substream instance
948  * @substream: the pcm substream instance
1124  * @runtime: PCM runtime instance
1145  * snd_pcm_format_cpu_endian - Check the PCM format is CPU-endian
1148  * Return: 1 if the given PCM format is CPU-endian, 0 if
1164 void snd_pcm_set_ops(struct snd_pcm * pcm, int direction,
1169  * snd_pcm_set_sync - set the PCM sync id
1170  * @substream: the pcm substream
1172  * Use the default PCM sync identifier for the specific card.
1258  * snd_pcm_set_runtime_buffer - Set the PCM runtime buffer
1259  * @substream: PCM substream to set
1284  * @runtime: PCM runtime instance
1308 void snd_pcm_lib_preallocate_free_for_all(struct snd_pcm *pcm);
1312 void snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm,
1320 int snd_pcm_set_managed_buffer_all(struct snd_pcm *pcm, int type,
1325  * snd_pcm_set_fixed_buffer - Preallocate and set up the fixed size PCM buffer
1326  * @substream: the pcm substream instance
1346  * snd_pcm_set_fixed_buffer_all - Preallocate and set up the fixed size PCM buffer
1347  * @pcm: the pcm instance
1359 snd_pcm_set_fixed_buffer_all(struct snd_pcm *pcm, int type,  in snd_pcm_set_fixed_buffer_all()  argument
1362 	return snd_pcm_set_managed_buffer_all(pcm, type, data, size, 0);  in snd_pcm_set_fixed_buffer_all()
1369  * @substream: PCM substream
1383  * @substream: PCM substream
1400  * PCM mmap callback should handle this counter properly
1412  * PCM mmap callback should handle this counter properly
1468  * @substream: the pcm substream instance
1478  * PCM channel-mapping control API
1488 	struct snd_pcm *pcm;	/* assigned PCM instance */  member
1498  * snd_pcm_chmap_substream - get the PCM substream assigned to the given chmap info
1502  * Return: the matched PCM substream, or NULL if not found
1508 	for (s = info->pcm->streams[info->stream].substream; s; s = s->next)  in snd_pcm_chmap_substream()
1524 int snd_pcm_add_chmap_ctls(struct snd_pcm *pcm, int stream,
1532  * @pcm_format: PCM format
1534  * Return: 64bit mask corresponding to the given PCM format
1551 #define pcm_err(pcm, fmt, args...) \  argument
1552 	dev_err((pcm)->card->dev, fmt, ##args)
1553 #define pcm_warn(pcm, fmt, args...) \  argument
1554 	dev_warn((pcm)->card->dev, fmt, ##args)
1555 #define pcm_dbg(pcm, fmt, args...) \  argument
1556 	dev_dbg((pcm)->card->dev, fmt, ##args)