nvds_latency_meta.h File Reference

Detailed Description

Defines Latency API

Description: This file defines an API for measuring module latency.

Definition in file nvds_latency_meta.h.

Go to the source code of this file.

Data Structures
struct	_NvDsMetaSubCompLatency
	Holds information about latency of the given subcomponent. More...
struct	_NvDsMetaCompLatency
	Holds information about latency of the given component. More...
struct	NvDsFrameLatencyInfo
	Holds information about the latency of a given frame. More...

Macros
#define	MAX_COMPONENT_LEN   64
#define	nvds_enable_latency_measurement   (nvds_get_enable_latency_measurement())
	Defines a pseudo-variable whose value is the return value of nvds_get_enable_latency_measurement(). More...

Typedefs
typedef struct _NvDsMetaSubCompLatency	NvDsMetaSubCompLatency
	Holds information about latency of the given subcomponent. More...
typedef struct _NvDsMetaCompLatency	NvDsMetaCompLatency
	Holds information about latency of the given component. More...

Functions
NvDsUserMeta *	nvds_set_input_system_timestamp (GstBuffer *buffer, gchar *element_name)
	Sets the system timestamp when the Gst Buffer arrives as input at the component. More...
gboolean	nvds_set_output_system_timestamp (GstBuffer *buffer, gchar *element_name)
	Sets the system timestamp when a Gst Buffer that is pushed to the downstream component. More...
guint	nvds_measure_buffer_latency (GstBuffer *buf, NvDsFrameLatencyInfo *latency_info)
	Measures the latency of all frames present in the current batch. More...
gboolean	nvds_get_enable_latency_measurement (void)
	Indicates whether the environment variable NVDS_ENABLE_LATENCY_MEASUREMENT is exported. More...
void	nvds_add_reference_timestamp_meta (GstBuffer *buffer, gchar *element_name, guint frame_id)
	Adds the reference timestamp metadata for this buffer Note: element_name == "audiodecoder" and "nvv4l2decoder" will be used for latency measurement calculations where the timestamp will be used by API: nvds_measure_buffer_latency() to calculate the latency of buffers downstream relative to the decoder. More...