diff options
Diffstat (limited to 'cras/src/server/dev_stream.h')
| -rw-r--r-- | cras/src/server/dev_stream.h | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/cras/src/server/dev_stream.h b/cras/src/server/dev_stream.h index c39a8017..6b34d5d7 100644 --- a/cras/src/server/dev_stream.h +++ b/cras/src/server/dev_stream.h @@ -46,30 +46,47 @@ struct dev_stream { int is_running; }; +/* + * Creates a dev_stream. + * + * Args: + * stream - The associated rstream. + * dev_id - Index of the device. + * dev_fmt - The format of the device. + * dev_ptr - A pointer to the device + * cb_ts - A pointer to the initial callback time. + * sleep_interval_ts - A pointer to the initial sleep interval. + * Set to null to calculate the value from device rate and block size. + * Note that we need this argument so that output device sleep interval + * can use input device sleep interval in the beginning to have perfect + * alignment in WebRTC use case. + * Returns the pointer to the created dev_stream. + */ struct dev_stream *dev_stream_create(struct cras_rstream *stream, unsigned int dev_id, const struct cras_audio_format *dev_fmt, - void *dev_ptr, struct timespec *cb_ts); + void *dev_ptr, struct timespec *cb_ts, + const struct timespec *sleep_interval_ts); void dev_stream_destroy(struct dev_stream *dev_stream); /* * Update the estimated sample rate of the device. For multiple active * devices case, the linear resampler will be configured by the estimated - * rate ration of the master device and the current active device the + * rate ration of the main device and the current active device the * rstream attaches to. * * Args: * dev_stream - The structure holding the stream. * dev_rate - The sample rate device is using. * dev_rate_ratio - The ratio of estimated rate and used rate. - * master_rate_ratio - The ratio of estimated rate and used rate of - * master device. + * main_rate_ratio - The ratio of estimated rate and used rate of + * main device. * coarse_rate_adjust - The flag to indicate the direction device * sample rate should adjust to. */ void dev_stream_set_dev_rate(struct dev_stream *dev_stream, unsigned int dev_rate, double dev_rate_ratio, - double master_rate_ratio, int coarse_rate_adjust); + double main_rate_ratio, int coarse_rate_adjust); /* * Renders count frames from shm into dst. Updates count if anything is |