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rework latency querying API (this needs more testing)

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@648 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2006-04-07 00:24:48 +00:00
parent cc302f2d17
commit 920f045380
4 changed files with 326 additions and 223 deletions
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28
src/polyp/stream.h
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@ -51,9 +51,6 @@ typedef void (*pa_stream_request_cb_t)(pa_stream *p, size_t length, void *userda
/** A generic notification callback */
typedef void (*pa_stream_notify_cb_t)(pa_stream *p, void *userdata);
/** Callback prototype for pa_stream_get_latency_info() */
typedef void (*pa_stream_get_latency_info_cb_t)(pa_stream *p, const pa_latency_info *i, void *userdata);
/** Create a new, unconnected stream with the specified name and sample type */
pa_stream* pa_stream_new(
pa_context *c /**< The context to create this stream in */,
@ -133,8 +130,8 @@ size_t pa_stream_readable_size(pa_stream *p);
/** Drain a playback stream. Use this for notification when the buffer is empty */
pa_operation* pa_stream_drain(pa_stream *s, pa_stream_success_cb_t cb, void *userdata);
/** Get the playback latency of a stream */
pa_operation* pa_stream_get_latency_info(pa_stream *p, pa_stream_get_latency_info_cb_t cby, void *userdata);
/** Update the latency info of a stream */
pa_operation* pa_stream_update_latency_info(pa_stream *p, pa_stream_success_cb_t cb, void *userdata);
/** Set the callback function that is called whenever the state of the stream changes */
void pa_stream_set_state_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata);
@ -173,34 +170,21 @@ pa_operation* pa_stream_trigger(pa_stream *s, pa_stream_success_cb_t cb, void *u
/** Rename the stream. \since 0.5 */
pa_operation* pa_stream_set_name(pa_stream *s, const char *name, pa_stream_success_cb_t cb, void *userdata);
/** Return the total number of bytes written to/read from the
* stream. This counter is not reset on pa_stream_flush(), you may do
* this yourself using pa_stream_reset_counter(). \since 0.6 */
uint64_t pa_stream_get_counter(pa_stream *s);
/** Return the current playback/recording time. This is based on the
* counter accessible with pa_stream_get_counter(). This function
* requires a pa_latency_info structure as argument, which should be
* acquired using pa_stream_get_latency(). \since 0.6 */
pa_usec_t pa_stream_get_time(pa_stream *s, const pa_latency_info *i);
int pa_stream_get_time(pa_stream *s, pa_usec_t *r_usec);
/** Return the total stream latency. Thus function requires a
* pa_latency_info structure as argument, which should be aquired
* using pa_stream_get_latency(). In case the stream is a monitoring
* stream the result can be negative, i.e. the captured samples are
* not yet played. In this case *negative is set to 1. \since 0.6 */
pa_usec_t pa_stream_get_latency(pa_stream *s, const pa_latency_info *i, int *negative);
int pa_stream_get_latency(pa_stream *s, pa_usec_t *r_usec, int *negative);
/** Return the interpolated playback/recording time. Requires the
* PA_STREAM_INTERPOLATE_LATENCY bit set when creating the stream. In
* contrast to pa_stream_get_latency() this function doesn't require
* a whole roundtrip for response. \since 0.6 */
pa_usec_t pa_stream_get_interpolated_time(pa_stream *s);
/** Return the interpolated playback/recording latency. Requires the
* PA_STREAM_INTERPOLATE_LATENCY bit set when creating the
* stream. \since 0.6 */
pa_usec_t pa_stream_get_interpolated_latency(pa_stream *s, int *negative);
/** Return the latest latency data. \since 0.8 */
const pa_latency_info* pa_stream_get_latency_info(pa_stream *s);
/** Return a pointer to the stream's sample specification. \since 0.6 */
const pa_sample_spec* pa_stream_get_sample_spec(pa_stream *s);