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Attach objects metadata to gstdsexample probe

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This commit is contained in:
Barzan Hayati 2025-07-26 20:33:45 +00:00
parent 92062a514e
commit 8dc2fad1fe
9 changed files with 359 additions and 164 deletions
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78
src/gstds_example_manager.cpp
View File

@ -1,5 +1,10 @@
#include "gstds_example_manager.hpp"
#define MAX_DISPLAY_LEN 64
#define PGIE_CLASS_ID_PERSON 0
gint GstdsExampleManager::frame_number = 0;
GstdsExampleManager::GstdsExampleManager() {}
bool GstdsExampleManager::create_gstds_example() {
@ -10,4 +15,75 @@ bool GstdsExampleManager::create_gstds_example() {
return false;
}
return true;
}
}
// Attach probe to a pad in the pipeline
void GstdsExampleManager::attach_probe_to_element() {
GstPad *src_pad = gst_element_get_static_pad(custom_plugin, "src");
if (!src_pad) {
std::cerr << "Unable to get gst ds example src pad\n";
return;
}
gst_pad_add_probe(src_pad, GST_PAD_PROBE_TYPE_BUFFER,
gstds_example_src_pad_buffer_probe, NULL, NULL);
gst_object_unref(src_pad);
}
/* This is the buffer probe function that we have registered on the src pad
* of the gstds_example element. All the infer elements in the pipeline shall
* attach their metadata to the GstBuffer, here we will iterate & process the
* metadata forex: class ids to strings, counting of class_id objects etc. */
GstPadProbeReturn GstdsExampleManager::gstds_example_src_pad_buffer_probe(
GstPad *pad, GstPadProbeInfo *info, gpointer u_data) {
(void)pad;
(void)u_data;
GstBuffer *buf = (GstBuffer *)info->data;
guint num_rects = 0;
guint person_count = 0;
NvDsObjectMeta *obj_meta = NULL;
NvDsMetaList *l_frame = NULL;
NvDsMetaList *l_obj = NULL;
NvDsDisplayMeta *display_meta = NULL;
NvDsBatchMeta *batch_meta = gst_buffer_get_nvds_batch_meta(buf);
for (l_frame = batch_meta->frame_meta_list; l_frame != NULL;
l_frame = l_frame->next) {
NvDsFrameMeta *frame_meta = (NvDsFrameMeta *)(l_frame->data);
int offset = 0;
for (l_obj = frame_meta->obj_meta_list; l_obj != NULL;
l_obj = l_obj->next) {
obj_meta = (NvDsObjectMeta *)(l_obj->data);
if (obj_meta->class_id == PGIE_CLASS_ID_PERSON) {
person_count++;
num_rects++;
std::cout << "In GstdsExample src "
<< "x = " << obj_meta->rect_params.left
<< " y = " << obj_meta->rect_params.top
<< " w = " << obj_meta->rect_params.width
<< " h = " << obj_meta->rect_params.height
<< " score = " << obj_meta->confidence
<< " Object ID: " << obj_meta->object_id
<< std::endl;
}
}
display_meta = nvds_acquire_display_meta_from_pool(batch_meta);
NvOSD_TextParams *txt_params = &display_meta->text_params[0];
display_meta->num_labels = 1;
txt_params->display_text = (gchar *)g_malloc0(MAX_DISPLAY_LEN);
offset = snprintf(txt_params->display_text, MAX_DISPLAY_LEN,
"Person = %d ", person_count);
(void)offset;
nvds_add_display_meta_to_frame(frame_meta, display_meta);
}
g_print(
"In GstdsExample src "
"Frame Number = %d "
"Person Count = %d\n",
frame_number, person_count);
frame_number++;
return GST_PAD_PROBE_OK;
}

8
src/gstds_example_manager.hpp
View File

@ -1,5 +1,9 @@
#include <gst/gst.h>
#include <fstream>
#include <iostream>
#include "gstnvdsmeta.h"
class GstdsExampleManager {
private:
public:
@ -7,4 +11,8 @@ class GstdsExampleManager {
GstdsExampleManager();
bool create_gstds_example();
~GstdsExampleManager();
static gint frame_number;
void attach_probe_to_element();
static GstPadProbeReturn gstds_example_src_pad_buffer_probe(
GstPad *, GstPadProbeInfo *, gpointer);
};

276
src/nv_infer_server_manager.cpp
View File

@ -60,137 +60,140 @@ bool NvInferServerManager::create_nv_infer_server(int num_sources) {
// Probe function to inspect NvDsObjectMeta
GstPadProbeReturn NvInferServerManager::osd_sink_pad_buffer_probe(
GstPad *pad, GstPadProbeInfo *info, gpointer user_data) {
(void)pad;
(void)user_data;
GstBuffer *buf = (GstBuffer *)info->data;
// GstPadProbeReturn NvInferServerManager::osd_sink_pad_buffer_probe(
// GstPad *pad, GstPadProbeInfo *info, gpointer user_data) {
// (void)pad;
// (void)user_data;
// GstBuffer *buf = (GstBuffer *)info->data;
// Retrieve batch metadata from buffer
NvDsBatchMeta *batch_meta = gst_buffer_get_nvds_batch_meta(buf);
if (!batch_meta) {
std::cerr << "No batch metadata found\n";
return GST_PAD_PROBE_OK;
}
// // Retrieve batch metadata from buffer
// NvDsBatchMeta *batch_meta = gst_buffer_get_nvds_batch_meta(buf);
// if (!batch_meta) {
// std::cerr << "No batch metadata found\n";
// return GST_PAD_PROBE_OK;
// }
// probe sees the frame metadata (NvDsFrameMeta) —
// but no object metadata (NvDsObjectMeta) was attached to that frame.
// // probe sees the frame metadata (NvDsFrameMeta) —
// // but no object metadata (NvDsObjectMeta) was attached to that frame.
for (NvDsMetaList *l_frame = batch_meta->frame_meta_list; l_frame != NULL;
l_frame = l_frame->next) {
NvDsFrameMeta *frame_meta = (NvDsFrameMeta *)(l_frame->data);
// std::cout << "Frame number: " << frame_meta->frame_num << std::endl;
// if (frame_meta->obj_meta_list == NULL) {
// std::cout << " ⚠️ No object metadata for this frame.\n";
// }
// for (NvDsMetaList *l_frame = batch_meta->frame_meta_list; l_frame !=
// NULL;
// l_frame = l_frame->next) {
// NvDsFrameMeta *frame_meta = (NvDsFrameMeta *)(l_frame->data);
// // std::cout << "Frame number: " << frame_meta->frame_num <<
// std::endl;
// // if (frame_meta->obj_meta_list == NULL) {
// // std::cout << " ⚠️ No object metadata for this frame.\n";
// // }
for (NvDsMetaList *l_obj = frame_meta->obj_meta_list; l_obj != NULL;
l_obj = l_obj->next) {
NvDsObjectMeta *obj_meta = (NvDsObjectMeta *)(l_obj->data);
// for (NvDsMetaList *l_obj = frame_meta->obj_meta_list; l_obj != NULL;
// l_obj = l_obj->next) {
// NvDsObjectMeta *obj_meta = (NvDsObjectMeta *)(l_obj->data);
std::cout << " Object ID: " << obj_meta->object_id << std::endl;
std::cout << " Class ID: " << obj_meta->class_id << std::endl;
std::cout << " Label: "
<< (obj_meta->obj_label ? obj_meta->obj_label : "N/A")
<< std::endl;
std::cout << " BBox: x=" << obj_meta->rect_params.left
<< " y=" << obj_meta->rect_params.top
<< " w=" << obj_meta->rect_params.width
<< " h=" << obj_meta->rect_params.height << std::endl;
}
}
return GST_PAD_PROBE_OK;
}
// std::cout << " Object ID: " << obj_meta->object_id << std::endl;
// std::cout << " Class ID: " << obj_meta->class_id << std::endl;
// std::cout << " Label: "
// << (obj_meta->obj_label ? obj_meta->obj_label : "N/A")
// << std::endl;
// std::cout << " BBox: x=" << obj_meta->rect_params.left
// << " y=" << obj_meta->rect_params.top
// << " w=" << obj_meta->rect_params.width
// << " h=" << obj_meta->rect_params.height << std::endl;
// }
// }
// return GST_PAD_PROBE_OK;
// }
// Attach probe to a pad in the pipeline
void NvInferServerManager::attach_probe_to_element(GstElement *nvosd) {
GstPad *sink_pad = gst_element_get_static_pad(nvosd, "sink");
if (!sink_pad) {
std::cerr << "Unable to get nvosd sink pad\n";
return;
}
// // Attach probe to a pad in the pipeline
// void NvInferServerManager::attach_probe_to_element(GstElement *nvosd) {
// GstPad *sink_pad = gst_element_get_static_pad(nvosd, "src");
// if (!sink_pad) {
// std::cerr << "Unable to get nvosd sink pad\n";
// return;
// }
gst_pad_add_probe(sink_pad, GST_PAD_PROBE_TYPE_BUFFER,
osd_sink_pad_buffer_probe_new, NULL, NULL);
gst_object_unref(sink_pad);
}
// gst_pad_add_probe(sink_pad, GST_PAD_PROBE_TYPE_BUFFER,
// osd_sink_pad_buffer_probe_new, NULL, NULL);
// gst_object_unref(sink_pad);
// }
/* This is the buffer probe function that we have registered on the sink pad
* of the OSD element. All the infer elements in the pipeline shall attach
* their metadata to the GstBuffer, here we will iterate & process the metadata
* forex: class ids to strings, counting of class_id objects etc. */
GstPadProbeReturn NvInferServerManager::osd_sink_pad_buffer_probe_new(
GstPad *pad, GstPadProbeInfo *info, gpointer u_data) {
(void)pad;
(void)u_data;
GstBuffer *buf = (GstBuffer *)info->data;
guint num_rects = 0;
guint person_count = 0;
NvDsObjectMeta *obj_meta = NULL;
NvDsMetaList *l_frame = NULL;
NvDsMetaList *l_obj = NULL;
NvDsDisplayMeta *display_meta = NULL;
// /* This is the buffer probe function that we have registered on the sink pad
// * of the OSD element. All the infer elements in the pipeline shall attach
// * their metadata to the GstBuffer, here we will iterate & process the
// metadata
// * forex: class ids to strings, counting of class_id objects etc. */
// GstPadProbeReturn NvInferServerManager::osd_sink_pad_buffer_probe_new(
// GstPad *pad, GstPadProbeInfo *info, gpointer u_data) {
// (void)pad;
// (void)u_data;
// GstBuffer *buf = (GstBuffer *)info->data;
// guint num_rects = 0;
// guint person_count = 0;
// NvDsObjectMeta *obj_meta = NULL;
// NvDsMetaList *l_frame = NULL;
// NvDsMetaList *l_obj = NULL;
// NvDsDisplayMeta *display_meta = NULL;
NvDsBatchMeta *batch_meta = gst_buffer_get_nvds_batch_meta(buf);
// NvDsBatchMeta *batch_meta = gst_buffer_get_nvds_batch_meta(buf);
for (l_frame = batch_meta->frame_meta_list; l_frame != NULL;
l_frame = l_frame->next) {
NvDsFrameMeta *frame_meta = (NvDsFrameMeta *)(l_frame->data);
int offset = 0;
for (l_obj = frame_meta->obj_meta_list; l_obj != NULL;
l_obj = l_obj->next) {
obj_meta = (NvDsObjectMeta *)(l_obj->data);
if (obj_meta->class_id == PGIE_CLASS_ID_PERSON) {
person_count++;
num_rects++;
std::cout << "In OSD sink "
<< "x = " << obj_meta->rect_params.left
<< " y = " << obj_meta->rect_params.top
<< " w = " << obj_meta->rect_params.width
<< " h = " << obj_meta->rect_params.height
<< " score = " << obj_meta->confidence
<< " Object ID: " << obj_meta->object_id
<< std::endl;
}
}
display_meta = nvds_acquire_display_meta_from_pool(batch_meta);
NvOSD_TextParams *txt_params = &display_meta->text_params[0];
display_meta->num_labels = 1;
txt_params->display_text = (gchar *)g_malloc0(MAX_DISPLAY_LEN);
offset = snprintf(txt_params->display_text, MAX_DISPLAY_LEN,
"Person = %d ", person_count);
(void)offset;
// for (l_frame = batch_meta->frame_meta_list; l_frame != NULL;
// l_frame = l_frame->next) {
// NvDsFrameMeta *frame_meta = (NvDsFrameMeta *)(l_frame->data);
// int offset = 0;
// for (l_obj = frame_meta->obj_meta_list; l_obj != NULL;
// l_obj = l_obj->next) {
// obj_meta = (NvDsObjectMeta *)(l_obj->data);
// if (obj_meta->class_id == PGIE_CLASS_ID_PERSON) {
// person_count++;
// num_rects++;
// std::cout << "In OSD sink "
// << "x = " << obj_meta->rect_params.left
// << " y = " << obj_meta->rect_params.top
// << " w = " << obj_meta->rect_params.width
// << " h = " << obj_meta->rect_params.height
// << " score = " << obj_meta->confidence
// << " Object ID: " << obj_meta->object_id
// << std::endl;
// }
// }
// display_meta = nvds_acquire_display_meta_from_pool(batch_meta);
// NvOSD_TextParams *txt_params = &display_meta->text_params[0];
// display_meta->num_labels = 1;
// txt_params->display_text = (gchar *)g_malloc0(MAX_DISPLAY_LEN);
// offset = snprintf(txt_params->display_text, MAX_DISPLAY_LEN,
// "Person = %d ", person_count);
// (void)offset;
/* Now set the offsets where the string should appear */
txt_params->x_offset = 10;
txt_params->y_offset = 12;
// /* Now set the offsets where the string should appear */
// txt_params->x_offset = 10;
// txt_params->y_offset = 12;
/* Font , font-color and font-size */
txt_params->font_params.font_name = (gchar *)"Serif";
txt_params->font_params.font_size = 10;
txt_params->font_params.font_color.red = 1.0;
txt_params->font_params.font_color.green = 1.0;
txt_params->font_params.font_color.blue = 1.0;
txt_params->font_params.font_color.alpha = 1.0;
// /* Font , font-color and font-size */
// txt_params->font_params.font_name = (gchar *)"Serif";
// txt_params->font_params.font_size = 10;
// txt_params->font_params.font_color.red = 1.0;
// txt_params->font_params.font_color.green = 1.0;
// txt_params->font_params.font_color.blue = 1.0;
// txt_params->font_params.font_color.alpha = 1.0;
/* Text background color */
txt_params->set_bg_clr = 1;
txt_params->text_bg_clr.red = 0.0;
txt_params->text_bg_clr.green = 0.0;
txt_params->text_bg_clr.blue = 0.0;
txt_params->text_bg_clr.alpha = 1.0;
// /* Text background color */
// txt_params->set_bg_clr = 1;
// txt_params->text_bg_clr.red = 0.0;
// txt_params->text_bg_clr.green = 0.0;
// txt_params->text_bg_clr.blue = 0.0;
// txt_params->text_bg_clr.alpha = 1.0;
nvds_add_display_meta_to_frame(frame_meta, display_meta);
}
g_print(
"In OSD sink "
"Frame Number = %d "
"Person Count = %d\n",
frame_number, person_count);
// nvds_add_display_meta_to_frame(frame_meta, display_meta);
// }
// g_print(
// "In OSD sink "
// "Frame Number = %d "
// "Person Count = %d\n",
// frame_number, person_count);
frame_number++;
return GST_PAD_PROBE_OK;
}
// frame_number++;
// return GST_PAD_PROBE_OK;
// }
/* This is the buffer probe function that we have registered on the src pad
* of the PGIE's next queue element. PGIE element in the pipeline shall attach
@ -295,15 +298,16 @@ GstPadProbeReturn NvInferServerManager::pgie_pad_buffer_probe(
uint detected_persons = 0;
float *data = static_cast<float *>(layer.buffer);
for (unsigned int jkl = 0; jkl < 100; jkl+=4) { // 100 persons for each frame
for (unsigned int jkl = 0; jkl < 100;
jkl += 4) { // 100 persons for each frame
if (data[jkl * 57 + 4] > threshold_body_detection) {
detected_persons++;
std::cout << "first for x = " << data[jkl * 57 + 0]
<< " y = " << data[jkl * 57 + 1]
<< " w = " << data[jkl * 57 + 2]
<< " h = " << data[jkl * 57 + 3]
<< " score = " << data[jkl * 57 + 4] <<
std::endl;
std::cout
<< "nvinferserver first for x = " << data[jkl * 57 + 0]
<< " y = " << data[jkl * 57 + 1]
<< " w = " << data[jkl * 57 + 2]
<< " h = " << data[jkl * 57 + 3]
<< " score = " << data[jkl * 57 + 4] << std::endl;
for (unsigned int mno = 0; mno < 5; ++mno) {
float value = data[jkl * 57 + mno];
(void)value;
@ -323,25 +327,23 @@ GstPadProbeReturn NvInferServerManager::pgie_pad_buffer_probe(
NvOSD_RectParams &rect_params = obj_meta->rect_params;
NvOSD_TextParams &text_params = obj_meta->text_params;
/* Assign bounding box coordinates. */
rect_params.left =
int(data[index * 57 + 0] * MUXER_OUTPUT_WIDTH / PGIE_NET_WIDTH);
rect_params.top = int(data[index * 57 + 1] * MUXER_OUTPUT_HEIGHT /
PGIE_NET_HEIGHT);
rect_params.left = int(data[index * 57 + 0] *
MUXER_OUTPUT_WIDTH / PGIE_NET_WIDTH);
rect_params.top = int(data[index * 57 + 1] *
MUXER_OUTPUT_HEIGHT / PGIE_NET_HEIGHT);
rect_params.width =
int((data[index * 57 + 2] - data[index * 57 + 0]) *
MUXER_OUTPUT_WIDTH / PGIE_NET_WIDTH);
MUXER_OUTPUT_WIDTH / PGIE_NET_WIDTH);
rect_params.height =
int((data[index * 57 + 3] - data[index * 57 + 1]) *
MUXER_OUTPUT_HEIGHT / PGIE_NET_HEIGHT);
MUXER_OUTPUT_HEIGHT / PGIE_NET_HEIGHT);
std::cout << "nvinferserver second for x = " << rect_params.left
<< " y = " << rect_params.top
<< " w = " << rect_params.width
<< " h = " << rect_params.height
<< " score = " << obj_meta->confidence << std::endl;
std::cout << "second for x = " << rect_params.left
<< " y = " << rect_params.top
<< " w = " << rect_params.top
<< " h = " << rect_params.width
<< " score = " << obj_meta->confidence <<
std::endl;
/* Border of width 3. */
rect_params.border_width = 3;
rect_params.has_bg_color = 0;

14
src/nv_infer_server_manager.hpp
View File

@ -26,13 +26,13 @@ class NvInferServerManager {
NvInferServerManager();
bool create_nv_infer_server(int);
~NvInferServerManager();
static GstPadProbeReturn osd_sink_pad_buffer_probe(GstPad *,
GstPadProbeInfo *,
gpointer);
void attach_probe_to_element(GstElement *);
// static GstPadProbeReturn osd_sink_pad_buffer_probe(GstPad *,
// GstPadProbeInfo *,
// gpointer);
// void attach_probe_to_element(GstElement *);
static GstPadProbeReturn pgie_pad_buffer_probe(GstPad *, GstPadProbeInfo *,
gpointer);
static GstPadProbeReturn osd_sink_pad_buffer_probe_new(GstPad *,
GstPadProbeInfo *,
gpointer);
// static GstPadProbeReturn osd_sink_pad_buffer_probe_new(GstPad *,
// GstPadProbeInfo
// *, gpointer);
};

97
src/nv_osd_manager.cpp
View File

@ -7,6 +7,10 @@
1 // use GPU to draw rectangles, keypoints and text on frame if
// OSD_PROCESS_MODE set to 1
#define OSD_DISPLAY_TEXT 1
#define MAX_DISPLAY_LEN 64
#define PGIE_CLASS_ID_PERSON 0
gint NvOsdManager::frame_number = 0;
NvOsdManager::NvOsdManager() {}
@ -23,4 +27,95 @@ bool NvOsdManager::create_nv_osd() {
return false;
}
return true;
}
}
// Attach probe to a pad in the pipeline
void NvOsdManager::attach_probe_to_element() {
GstPad *src_pad = gst_element_get_static_pad(nvosd, "src");
if (!src_pad) {
std::cerr << "Unable to get nvosd src pad\n";
return;
}
gst_pad_add_probe(src_pad, GST_PAD_PROBE_TYPE_BUFFER,
osd_src_pad_buffer_probe, NULL, NULL);
gst_object_unref(src_pad);
}
/* This is the buffer probe function that we have registered on the sink pad
* of the OSD element. All the infer elements in the pipeline shall attach
* their metadata to the GstBuffer, here we will iterate & process the metadata
* forex: class ids to strings, counting of class_id objects etc. */
GstPadProbeReturn NvOsdManager::osd_src_pad_buffer_probe(GstPad *pad,
GstPadProbeInfo *info,
gpointer u_data) {
(void)pad;
(void)u_data;
GstBuffer *buf = (GstBuffer *)info->data;
guint num_rects = 0;
guint person_count = 0;
NvDsObjectMeta *obj_meta = NULL;
NvDsMetaList *l_frame = NULL;
NvDsMetaList *l_obj = NULL;
NvDsDisplayMeta *display_meta = NULL;
NvDsBatchMeta *batch_meta = gst_buffer_get_nvds_batch_meta(buf);
for (l_frame = batch_meta->frame_meta_list; l_frame != NULL;
l_frame = l_frame->next) {
NvDsFrameMeta *frame_meta = (NvDsFrameMeta *)(l_frame->data);
int offset = 0;
for (l_obj = frame_meta->obj_meta_list; l_obj != NULL;
l_obj = l_obj->next) {
obj_meta = (NvDsObjectMeta *)(l_obj->data);
if (obj_meta->class_id == PGIE_CLASS_ID_PERSON) {
person_count++;
num_rects++;
std::cout << "In OSD sink "
<< "x = " << obj_meta->rect_params.left
<< " y = " << obj_meta->rect_params.top
<< " w = " << obj_meta->rect_params.width
<< " h = " << obj_meta->rect_params.height
<< " score = " << obj_meta->confidence
<< " Object ID: " << obj_meta->object_id
<< std::endl;
}
}
display_meta = nvds_acquire_display_meta_from_pool(batch_meta);
NvOSD_TextParams *txt_params = &display_meta->text_params[0];
display_meta->num_labels = 1;
txt_params->display_text = (gchar *)g_malloc0(MAX_DISPLAY_LEN);
offset = snprintf(txt_params->display_text, MAX_DISPLAY_LEN,
"Person = %d ", person_count);
(void)offset;
/* Now set the offsets where the string should appear */
txt_params->x_offset = 10;
txt_params->y_offset = 12;
/* Font , font-color and font-size */
txt_params->font_params.font_name = (gchar *)"Serif";
txt_params->font_params.font_size = 10;
txt_params->font_params.font_color.red = 1.0;
txt_params->font_params.font_color.green = 1.0;
txt_params->font_params.font_color.blue = 1.0;
txt_params->font_params.font_color.alpha = 1.0;
/* Text background color */
txt_params->set_bg_clr = 1;
txt_params->text_bg_clr.red = 0.0;
txt_params->text_bg_clr.green = 0.0;
txt_params->text_bg_clr.blue = 0.0;
txt_params->text_bg_clr.alpha = 1.0;
nvds_add_display_meta_to_frame(frame_meta, display_meta);
}
g_print(
"In OSD sink "
"Frame Number = %d "
"Person Count = %d\n",
frame_number, person_count);
frame_number++;
return GST_PAD_PROBE_OK;
}

10
src/nv_osd_manager.hpp
View File

@ -1,5 +1,10 @@
#include <gst/gst.h>
#include <fstream>
#include <iostream>
#include "gstnvdsmeta.h"
class NvOsdManager {
private:
public:
@ -7,4 +12,9 @@ class NvOsdManager {
NvOsdManager();
bool create_nv_osd();
~NvOsdManager();
static gint frame_number;
void attach_probe_to_element();
static GstPadProbeReturn osd_src_pad_buffer_probe(GstPad *,
GstPadProbeInfo *,
gpointer);
};

17
src/nv_tracker_manager.cpp
View File

@ -5,7 +5,6 @@
#define GPU_ID 0
#define MAX_DISPLAY_LEN 64
#define PGIE_CLASS_ID_PERSON 0
#define PGIE_DETECTED_CLASS_NUM 1
gint NvTrackerManager::frame_number = 0;
@ -32,23 +31,23 @@ bool NvTrackerManager::create_nv_tracker() {
}
// Attach probe to a pad in the pipeline
void NvTrackerManager::attach_probe_to_element(GstElement *nvosd) {
GstPad *sink_pad = gst_element_get_static_pad(nvosd, "src");
if (!sink_pad) {
std::cerr << "Unable to get nvosd sink pad\n";
void NvTrackerManager::attach_probe_to_element() {
GstPad *src_pad = gst_element_get_static_pad(tracker, "src");
if (!src_pad) {
std::cerr << "Unable to get nvosd src pad\n";
return;
}
gst_pad_add_probe(sink_pad, GST_PAD_PROBE_TYPE_BUFFER,
tracker_sink_pad_buffer_probe, NULL, NULL);
gst_object_unref(sink_pad);
gst_pad_add_probe(src_pad, GST_PAD_PROBE_TYPE_BUFFER,
tracker_src_pad_buffer_probe, NULL, NULL);
gst_object_unref(src_pad);
}
/* This is the buffer probe function that we have registered on the sink pad
* of the OSD element. All the infer elements in the pipeline shall attach
* their metadata to the GstBuffer, here we will iterate & process the metadata
* forex: class ids to strings, counting of class_id objects etc. */
GstPadProbeReturn NvTrackerManager::tracker_sink_pad_buffer_probe(
GstPadProbeReturn NvTrackerManager::tracker_src_pad_buffer_probe(
GstPad *pad, GstPadProbeInfo *info, gpointer u_data) {
(void)pad;
(void)u_data;

8
src/nv_tracker_manager.hpp
View File

@ -16,8 +16,8 @@ class NvTrackerManager {
NvTrackerManager();
~NvTrackerManager();
bool create_nv_tracker();
void attach_probe_to_element(GstElement *);
static GstPadProbeReturn tracker_sink_pad_buffer_probe(GstPad *,
GstPadProbeInfo *,
gpointer);
void attach_probe_to_element();
static GstPadProbeReturn tracker_src_pad_buffer_probe(GstPad *,
GstPadProbeInfo *,
gpointer);
};

15
src/pipeline_manager.cpp
View File

@ -330,6 +330,8 @@ bool PipelineManager::create_pipeline_elements(int num_sources,
}
gstds_example_manager->create_gstds_example();
gstds_example_manager->attach_probe_to_element();
tiler_manager->create_tiler(num_sources,
streammux_manager->MUXER_OUTPUT_WIDTH,
streammux_manager->MUXER_OUTPUT_HEIGHT);
@ -350,14 +352,17 @@ bool PipelineManager::create_pipeline_elements(int num_sources,
// GstElement *nvinfer = gst_bin_get_by_name(GST_BIN(pipeline),
// "primary-nvinference-engine");
nv_infer_server_manager->attach_probe_to_element(
nv_osd_manager->nvosd); // nvinfer Or use "nvtracker" if after
// tracker
// nv_infer_server_manager->attach_probe_to_element(
// nv_osd_manager->nvosd); // nvinfer Or use "nvtracker" if after
// tracker
// gst_object_unref(nvinfer);
nv_tracker_manager->create_nv_tracker();
nv_tracker_manager->attach_probe_to_element(
nv_tracker_manager->tracker); // nvinfer Or use "nvtracker" if after
nv_tracker_manager
->attach_probe_to_element(); // nvinfer Or use "nvtracker" if after
nv_osd_manager
->attach_probe_to_element(); // nvinfer Or use "nvtracker" if after
message_handling->create_message_handler(pipeline, g_run_forever, loop);
setup_pipeline();