MMAL_CLOCK_PRIVATE_T Struct Reference

List of all members.

Public Attributes
MMAL_CLOCK_T	clock
MMAL_BOOL_T	is_active
MMAL_BOOL_T	stop_thread
VCOS_SEMAPHORE_T	event
VCOS_THREAD_T	thread
VCOS_MUTEX_T	lock
MMAL_TIMER_T	timer
int32_t	scale
int32_t	scale_inv
MMAL_RATIONAL_T	scale_rational
int64_t	average_ref_diff
int64_t	media_time
int64_t	media_time_offset
uint32_t	media_time_frac
int64_t	wall_time
uint32_t	rtc_at_update
int64_t	media_time_at_timer
int64_t	discont_expiry
int64_t	discont_start
int64_t	discont_end
int64_t	discont_threshold
int64_t	discont_duration
int64_t	request_threshold
MMAL_BOOL_T	request_threshold_enable
int64_t	update_threshold_lower
int64_t	update_threshold_upper
struct {
MMAL_LIST_T *   list_free
MMAL_LIST_T *   list_pending
MMAL_CLOCK_REQUEST_T   pool [CLOCK_REQUEST_SLOTS]
}	request

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Member Data Documentation

int64_t MMAL_CLOCK_PRIVATE_T::average_ref_diff

media-time moving average adjustment

MMAL_CLOCK_T MMAL_CLOCK_PRIVATE_T::clock

must be first

int64_t MMAL_CLOCK_PRIVATE_T::discont_duration

Duration (wall-time) for which a discontinuity applies

int64_t MMAL_CLOCK_PRIVATE_T::discont_end

media-time at end of discontinuity (n/a if discont_expiry = 0)

int64_t MMAL_CLOCK_PRIVATE_T::discont_expiry

wall-time when discontinuity expires; 0 = no discontinuity in effect

int64_t MMAL_CLOCK_PRIVATE_T::discont_start

media-time at start of discontinuity (n/a if discont_expiry = 0)

int64_t MMAL_CLOCK_PRIVATE_T::discont_threshold

Threshold after which backward jumps in media time are treated as a discontinuity (microseconds)

MMAL_BOOL_T MMAL_CLOCK_PRIVATE_T::is_active

TRUE -> media-time is advancing

VCOS_MUTEX_T MMAL_CLOCK_PRIVATE_T::lock

lock access to the request lists

int64_t MMAL_CLOCK_PRIVATE_T::media_time

current local media-time in microseconds

int64_t MMAL_CLOCK_PRIVATE_T::media_time_at_timer

media-time when the timer was last set

uint32_t MMAL_CLOCK_PRIVATE_T::media_time_frac

media-time fraction in microseconds (Q24 format)

int64_t MMAL_CLOCK_PRIVATE_T::media_time_offset

media-time offset in microseconds

int64_t MMAL_CLOCK_PRIVATE_T::request_threshold

Threshold after which frames exceeding the media-time are dropped (microseconds)

MMAL_BOOL_T MMAL_CLOCK_PRIVATE_T::request_threshold_enable

Enable the request threshold

uint32_t MMAL_CLOCK_PRIVATE_T::rtc_at_update

real-time clock value at local time update (microseconds)

int32_t MMAL_CLOCK_PRIVATE_T::scale

media-time scale factor (Q16 format)

int32_t MMAL_CLOCK_PRIVATE_T::scale_inv

1/scale (Q16 format)

MMAL_RATIONAL_T MMAL_CLOCK_PRIVATE_T::scale_rational

clock scale as a rational number; keep a copy since converting from Q16 will result in precision errors

MMAL_TIMER_T MMAL_CLOCK_PRIVATE_T::timer

used for scheduling client requests

int64_t MMAL_CLOCK_PRIVATE_T::update_threshold_lower

Time differences below this threshold are ignored

int64_t MMAL_CLOCK_PRIVATE_T::update_threshold_upper

Time differences above this threshold reset media time

int64_t MMAL_CLOCK_PRIVATE_T::wall_time

current local wall-time (microseconds)

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The documentation for this struct was generated from the following file:

• /home/jvcleave/Desktop/RASPBERRY_PI/userland/interface/mmal/core/mmal_clock.c