-
Could you try the yolo model from our deepstream_tools sample?
I will try them and update here asap
-
I have used 2 usb cameras without any lag in the same device.
No the sample code didn’t have one for usb cameras, so i changed something from the sample app called deepstream_demux_multi_in_multi_out.py with the help of chatgpt. But the model is same.
Multi usb/web camera config file:
import sys
sys.path.append('../')
import gi
import configparser
gi.require_version('Gst', '1.0')
from gi.repository import GObject, Gst
from gi.repository import GLib
from ctypes import *
import time
import sys
import math
import platform
from common.platform_info import PlatformInfo
from common.bus_call import bus_call
from common.FPS import GETFPS
import pyds
fps_streams={}
MAX_DISPLAY_LEN=64
PGIE_CLASS_ID_VEHICLE = 2
PGIE_CLASS_ID_BICYCLE = 1
PGIE_CLASS_ID_PERSON = 0
PGIE_CLASS_ID_ROADSIGN = 11
MUXER_OUTPUT_WIDTH=1344
MUXER_OUTPUT_HEIGHT=376
MUXER_BATCH_TIMEOUT_USEC=4000000
TILED_OUTPUT_WIDTH=1344
TILED_OUTPUT_HEIGHT=376 * 2
GST_CAPS_FEATURES_NVMM="memory:NVMM"
OSD_PROCESS_MODE= 0
OSD_DISPLAY_TEXT= 0
pgie_classes_str= ["Vehicle", "TwoWheeler", "Person","RoadSign"]
# tiler_sink_pad_buffer_probe will extract metadata received on OSD sink pad
# and update params for drawing rectangle, object information etc.
def tiler_src_pad_buffer_probe(pad,info,u_data):
frame_number=0
num_rects=0
gst_buffer = info.get_buffer()
if not gst_buffer:
print("Unable to get GstBuffer ")
return
# Retrieve batch metadata from the gst_buffer
# Note that pyds.gst_buffer_get_nvds_batch_meta() expects the
# C address of gst_buffer as input, which is obtained with hash(gst_buffer)
batch_meta = pyds.gst_buffer_get_nvds_batch_meta(hash(gst_buffer))
l_frame = batch_meta.frame_meta_list
while l_frame is not None:
try:
# Note that l_frame.data needs a cast to pyds.NvDsFrameMeta
# The casting is done by pyds.NvDsFrameMeta.cast()
# The casting also keeps ownership of the underlying memory
# in the C code, so the Python garbage collector will leave
# it alone.
frame_meta = pyds.NvDsFrameMeta.cast(l_frame.data)
except StopIteration:
break
'''
print("Frame Number is ", frame_meta.frame_num)
print("Source id is ", frame_meta.source_id)
print("Batch id is ", frame_meta.batch_id)
print("Source Frame Width ", frame_meta.source_frame_width)
print("Source Frame Height ", frame_meta.source_frame_height)
print("Num object meta ", frame_meta.num_obj_meta)
'''
frame_number=frame_meta.frame_num
l_obj=frame_meta.obj_meta_list
num_rects = frame_meta.num_obj_meta
obj_counter = {i: 0 for i in range(80)}
while l_obj is not None:
try:
# Casting l_obj.data to pyds.NvDsObjectMeta
obj_meta=pyds.NvDsObjectMeta.cast(l_obj.data)
except StopIteration:
break
obj_counter[obj_meta.class_id] += 1
try:
l_obj=l_obj.next
except StopIteration:
break
"""display_meta=pyds.nvds_acquire_display_meta_from_pool(batch_meta)
display_meta.num_labels = 1
py_nvosd_text_params = display_meta.text_params[0]
py_nvosd_text_params.display_text = "Frame Number={} Number of Objects={} Vehicle_count={} Person_count={}".format(frame_number, num_rects, vehicle_count, person)
py_nvosd_text_params.x_offset = 10;
py_nvosd_text_params.y_offset = 12;
py_nvosd_text_params.font_params.font_name = "Serif"
py_nvosd_text_params.font_params.font_size = 10
py_nvosd_text_params.font_params.font_color.red = 1.0
py_nvosd_text_params.font_params.font_color.green = 1.0
py_nvosd_text_params.font_params.font_color.blue = 1.0
py_nvosd_text_params.font_params.font_color.alpha = 1.0
py_nvosd_text_params.set_bg_clr = 1
py_nvosd_text_params.text_bg_clr.red = 0.0
py_nvosd_text_params.text_bg_clr.green = 0.0
py_nvosd_text_params.text_bg_clr.blue = 0.0
py_nvosd_text_params.text_bg_clr.alpha = 1.0
#print("Frame Number=", frame_number, "Number of Objects=",num_rects,"Vehicle_count=",vehicle_count,"Person_count=",person)
pyds.nvds_add_display_meta_to_frame(frame_meta, display_meta)"""
print("Frame Number=", frame_number, "Number of Objects=",num_rects,"Vehicle_count=",obj_counter[PGIE_CLASS_ID_VEHICLE],"Person_count=",obj_counter[PGIE_CLASS_ID_PERSON])
# Get frame rate through this probe
fps_streams["stream{0}".format(frame_meta.pad_index)].get_fps()
try:
l_frame=l_frame.next
except StopIteration:
break
return Gst.PadProbeReturn.OK
def cb_newpad(decodebin, decoder_src_pad,data):
print("In cb_newpad\n")
caps=decoder_src_pad.get_current_caps()
gststruct=caps.get_structure(0)
gstname=gststruct.get_name()
source_bin=data
features=caps.get_features(0)
# Need to check if the pad created by the decodebin is for video and not
# audio.
print("gstname=",gstname)
if(gstname.find("video")!=-1):
# Link the decodebin pad only if decodebin has picked nvidia
# decoder plugin nvdec_*. We do this by checking if the pad caps contain
# NVMM memory features.
print("features=",features)
if features.contains("memory:NVMM"):
# Get the source bin ghost pad
bin_ghost_pad=source_bin.get_static_pad("src")
if not bin_ghost_pad.set_target(decoder_src_pad):
sys.stderr.write("Failed to link decoder src pad to source bin ghost pad\n")
else:
sys.stderr.write(" Error: Decodebin did not pick nvidia decoder plugin.\n")
def decodebin_child_added(child_proxy,Object,name,user_data):
print("Decodebin child added:", name, "\n")
if(name.find("decodebin") != -1):
Object.connect("child-added",decodebin_child_added,user_data)
if(platform_info.is_platform_aarch64() and name.find("nvv4l2decoder") != -1):
print("Seting bufapi_version\n")
Object.set_property("bufapi-version",True)
def create_source_bin(index, uri):
print(f"Creating source bin for index {index}, URI {uri}")
bin_name = f"source-bin-{index:02d}"
print(bin_name)
nbin = Gst.Bin.new(bin_name)
if not nbin:
sys.stderr.write(" Unable to create source bin \n")
return None
print("Creating Source \n ")
# Use unique names for elements within the bin by appending the index
source = Gst.ElementFactory.make("v4l2src", f"usb-cam-source-{index}")
if not source:
sys.stderr.write(" Unable to create source \n")
return None
source.set_property('device', uri)
# Common elements for the latter part of the source bin
vidconvsrc = Gst.ElementFactory.make("videoconvert", f"convertor_src1-{index}")
if not vidconvsrc:
sys.stderr.write(f" Unable to create videoconvert for source {index}\n")
return None
nvvidconvsrc = Gst.ElementFactory.make("nvvideoconvert", f"convertor_src2-{index}")
if not nvvidconvsrc:
sys.stderr.write(f" Unable to create Nvvideoconvert for source {index}\n")
return None
caps_nvmm = Gst.ElementFactory.make("capsfilter", f"nvmm_caps-{index}")
if not caps_nvmm:
sys.stderr.write(f" Unable to create nvmm_caps capsfilter for source {index}\n")
return None
caps_nvmm.set_property('caps', Gst.Caps.from_string("video/x-raw(memory:NVMM)"))
# Add common elements to the bin
nbin.add(source)
nbin.add(vidconvsrc)
nbin.add(nvvidconvsrc)
nbin.add(caps_nvmm)
camera_width = 640
camera_height = 480
if uri == "/dev/video0": # Camera with 25 FPS, expected to be video/x-raw
framerate_str = "25/1"
elif uri == "/dev/video2": # Camera with 30 FPS, expected to be image/jpeg
framerate_str = "30/1"
else:
sys.stderr.write(f"Error: URI {uri} is not explicitly handled. Configure appropriately.\n")
return None # Or implement a default behavior
caps_v4l2src = Gst.ElementFactory.make("capsfilter", f"v4l2src_caps-{index}")
if not caps_v4l2src:
sys.stderr.write(f"Could not create caps_v4l2src for {uri}\n")
return None
raw_caps_str = f"video/x-raw,width={camera_width},height={camera_height},framerate={framerate_str}"
caps_v4l2src.set_property('caps', Gst.Caps.from_string(raw_caps_str))
nbin.add(caps_v4l2src)
# Link: source -> caps_v4l2src -> vidconvsrc -> nvvidconvsrc -> caps_nvmm
if not source.link(caps_v4l2src):
sys.stderr.write(f"Error: Failed to link source to caps_v4l2src for {uri}\n")
return None
if not caps_v4l2src.link(vidconvsrc):
sys.stderr.write(f"Error: Failed to link caps_v4l2src to vidconvsrc for {uri}\n")
return None
# Common linking for the rest of the pipeline
if not vidconvsrc.link(nvvidconvsrc):
sys.stderr.write(f"Error: Failed to link vidconvsrc to nvvidconvsrc for {uri}\n")
return None
if not nvvidconvsrc.link(caps_nvmm):
sys.stderr.write(f"Error: Failed to link nvvidconvsrc to caps_nvmm for {uri}\n")
return None
# Create the ghost pad for the bin
srcpad = caps_nvmm.get_static_pad("src")
bin_pad = nbin.add_pad(Gst.GhostPad.new("src", srcpad))
if not bin_pad:
sys.stderr.write(f" Failed to add ghost pad in source bin for {uri}\n")
return None
return nbin
#For reference here is the code for setting up the pipelines and the linking for the app:
def main(args):
# Check input arguments
if len(args) < 2:
sys.stderr.write("usage: %s <uri1> [uri2] ... [uriN]\n" % args[0])
sys.exit(1)
for i in range(0,len(args)-1):
fps_streams["stream{0}".format(i)]=GETFPS(i)
print(GETFPS(i))
number_sources=len(args)-1
# Standard GStreamer initialization
GObject.threads_init()
Gst.init(None)
platform_info = PlatformInfo()
# Create gstreamer elements */
# Create Pipeline element that will form a connection of other elements
print("Creating Pipeline \n ")
pipeline = Gst.Pipeline()
is_live = False
if not pipeline:
sys.stderr.write(" Unable to create Pipeline \n")
print("Creating streamux \n ")
# Create nvstreammux instance to form batches from one or more sources.
streammux = Gst.ElementFactory.make("nvstreammux", "Stream-muxer")
if not streammux:
sys.stderr.write(" Unable to create NvStreamMux \n")
pipeline.add(streammux)
for i in range(number_sources):
print("Creating source_bin ",i," \n ")
usb_cam=args[i+1]
# if uri_name.find("rtsp://") == 0 :
is_live = True
source_bin=create_source_bin(i, usb_cam)
if not source_bin:
sys.stderr.write("Unable to create source bin \n")
pipeline.add(source_bin)
padname="sink_%u" %i
sinkpad= streammux.get_request_pad(padname)
if not sinkpad:
sys.stderr.write("Unable to create sink pad bin \n")
srcpad=source_bin.get_static_pad("src")
if not srcpad:
sys.stderr.write("Unable to create src pad bin \n")
srcpad.link(sinkpad)
queue1=Gst.ElementFactory.make("queue","queue1")
queue2=Gst.ElementFactory.make("queue","queue2")
queue3=Gst.ElementFactory.make("queue","queue3")
queue4=Gst.ElementFactory.make("queue","queue4")
queue5=Gst.ElementFactory.make("queue","queue5")
pipeline.add(queue1)
pipeline.add(queue2)
pipeline.add(queue3)
pipeline.add(queue4)
pipeline.add(queue5)
print("Creating Pgie \n ")
pgie = Gst.ElementFactory.make("nvinfer", "p376rimary-inference")
if not pgie:
sys.stderr.write(" Unable to create pgie \n")
print("Creating tiler \n ")
tiler=Gst.ElementFactory.make("nvmultistreamtiler", "nvtiler")
if not tiler:
sys.stderr.write(" Unable to create tiler \n")
print("Creating nvvidconv \n ")
nvvidconv = Gst.ElementFactory.make("nvvideoconvert", "convertor")
if not nvvidconv:
sys.stderr.write(" Unable to create nvvidconv \n")
print("Creating nvosd \n ")
nvosd = Gst.ElementFactory.make("nvdsosd", "onscreendisplay")
if not nvosd:
sys.stderr.write(" Unable to create nvosd \n")
nvosd.set_property('process-mode',OSD_PROCESS_MODE)
nvosd.set_property('display-text',OSD_DISPLAY_TEXT)
if platform_info.is_platform_aarch64():
print("Creating transform \n ")
transform=Gst.ElementFactory.make("nvegltransform", "nvegl-transform")
if not transform:
sys.stderr.write(" Unable to create transform \n")
print("Creating EGLSink \n")
sink = Gst.ElementFactory.make("nveglglessink", "nvvideo-renderer")
#sink = Gst.ElementFactory.make("nvoverlaysink", "nvvideo-renderer")
sink.set_property('sync', 0)
if not sink:
sys.stderr.write(" Unable to create egl sink \n")
if is_live:
print("Atleast one of the sources is live")
streammux.set_property('live-source', 1)
streammux.set_property('width', 1344)
streammux.set_property('height', 376)
streammux.set_property('batch-size', number_sources)
streammux.set_property('batched-push-timeout', 4000000)
pgie.set_property('config-file-path', "multi_usb.txt")
pgie_batch_size=pgie.get_property("batch-size")
if(pgie_batch_size != number_sources):
print("WARNING: Overriding infer-config batch-size",pgie_batch_size," with number of sources ", number_sources," \n")
pgie.set_property("batch-size",number_sources)
#tiler_rows=int(math.sqrt(number_sources))
tiler_rows=2
#tiler_columns=int(math.ceil((1.0*number_sources)/tiler_rows))
tiler_columns=1
tiler.set_property("rows",tiler_rows)
tiler.set_property("columns",tiler_columns)
tiler.set_property("width", TILED_OUTPUT_WIDTH)
tiler.set_property("height", TILED_OUTPUT_HEIGHT)
sink.set_property("qos",0)
print("Adding elements to Pipeline \n")
pipeline.add(pgie)
pipeline.add(tiler)
pipeline.add(nvvidconv)
pipeline.add(nvosd)
if platform_info.is_platform_aarch64():
pipeline.add(transform)
pipeline.add(sink)
print("Linking elements in the Pipeline \n")
streammux.link(queue1)
queue1.link(pgie)
pgie.link(queue2)
queue2.link(tiler)
tiler.link(queue3)
queue3.link(nvvidconv)
nvvidconv.link(queue4)
queue4.link(nvosd)
if platform_info.is_platform_aarch64():
nvosd.link(queue5)
queue5.link(transform)
transform.link(sink)
else:
nvosd.link(queue5)
queue5.link(sink)
# create an event loop and feed gstreamer bus mesages to it
loop = GObject.MainLoop()
bus = pipeline.get_bus()
bus.add_signal_watch()
bus.connect ("message", bus_call, loop)
tiler_src_pad=pgie.get_static_pad("src")
if not tiler_src_pad:
sys.stderr.write(" Unable to get src pad \n")
else:
tiler_src_pad.add_probe(Gst.PadProbeType.BUFFER, tiler_src_pad_buffer_probe, 0)
# List the sources
print("Now playing...")
for i, source in enumerate(args):
if (i != 0):
print(i, ": ", source)
print("Starting pipeline \n")
# start play back and listed to events
pipeline.set_state(Gst.State.PLAYING)
try:
loop.run()
except:
pass
# cleanup
print("Exiting app\n")
pipeline.set_state(Gst.State.NULL)
if __name__ == '__main__':
sys.exit(main(sys.argv))
