Hi,
I’m trying to record a video using a PoE camera on a Jetson Xavier AGX. To do this I’m trying to use Aravis and Deepstream(5.1 version). To do this a pipeline is created. I have a cloned repository in “/opt/nvidia/deepstream/deepstream-5.1/sources/apps/sample_apps/deepstream-yolo3-gige-apps/”. When I try to run the code I get the following error:
Could not create 'src_elem'
Failed to create source bin. Exiting.
I believe that this happens because deepstream is not being able to create the aravissrc plug-in when creating the pipeline.
I attach the code that creates the pipeline:
/*
* SPDX-License-Identifier: NVIDIA Corporation
* Copyright (c) 2019-2022. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <gst/gst.h>
#include <glib.h>
#include <stdio.h>
#include <math.h>
#include <string.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
# include <stdlib.h>
#include "gstnvdsmeta.h"
//#include "gstnvstreammeta.h"
#ifndef PLATFORM_TEGRA
#include "gst-nvmessage.h"
#endif
#define MAX_DISPLAY_LEN 64
/* The muxer output resolution must be set if the input streams will be of
* different resolution. The muxer will scale all the input frames to this
* resolution. */
#define MUXER_OUTPUT_WIDTH 1920
#define MUXER_OUTPUT_HEIGHT 1080
/* Muxer batch formation timeout, for e.g. 40 millisec. Should ideally be set
* based on the fastest source's framerate. */
#define MUXER_BATCH_TIMEOUT_USEC 4000000
#define TILED_OUTPUT_WIDTH 1920
#define TILED_OUTPUT_HEIGHT 1080
/* NVIDIA Decoder source pad memory feature. This feature signifies that source
* pads having this capability will push GstBuffers containing cuda buffers. */
#define GST_CAPS_FEATURES_NVMM "memory:NVMM"
//yolo classes
gchar pgie_classes_str[80][32] = {
"person","bicycle","car","motorbike","aeroplane","bus","train","truck","boat","traffic light",
"fire hydrant","stop sign","parking meter","bench","bird","cat","dog","horse","sheep","cow",
"elephant","bear","zebra","giraffe","backpack","umbrella","handbag","tie","suitcase","frisbee",
"skis","snowboard","sports ball","kite","baseball bat","baseball glove","skateboard","surfboard","tennis racket","bottle",
"wine glass","cup","fork","knife","spoon","bowl","banana","apple","sandwich","orange",
"broccoli","carrot","hot dog","pizza","donut","cake","chair","sofa","pottedplant","bed",
"diningtable","toilet","tvmonitor","laptop","mouse","remote","keyboard","cell phone","microwave","oven",
"toaster","sink","refrigerator","book","clock","vase","scissors","teddy bear","hair drier","toothbrush"
};
#define FPS_PRINT_INTERVAL 300
//static struct timeval start_time = { };
//static guint probe_counter = 0;
gint print_counter=0;
gdouble frame_num_1=0;
gdouble frame_num_current=0;
gdouble frame_rate=0;
gdouble time_sec;
int sockfd;
struct sockaddr_in des_addr;
clock_t clock_start;
clock_t clock_end;
/* tiler_sink_pad_buffer_probe will extract metadata received on OSD sink pad
* and update params for drawing rectangle, object information etc. */
static GstPadProbeReturn
tiler_src_pad_buffer_probe (GstPad * pad, GstPadProbeInfo * info,
gpointer u_data)
{
GstBuffer *buf = (GstBuffer *) info->data;
guint num_rects = 0;
NvDsObjectMeta *obj_meta = NULL;
guint vehicle_count = 0;
guint person_count = 0;
NvDsMetaList * l_frame = NULL;
NvDsMetaList * l_obj = NULL;
int r_flag=1;
gchar sendline[1024]= {};
gchar str[25];
//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) {
gint obj_num[80]={};
float bboxwidth[80]={};
float bboxheight[80]={};
float bboxwidth_max[80]={};
float bboxheight_max[80]={};
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) {
guint temp_volume1=0;
guint temp_volume2=0;
obj_meta = (NvDsObjectMeta *) (l_obj->data);
obj_num[obj_meta->class_id]=obj_num[obj_meta->class_id]+1;
bboxwidth[obj_meta->class_id]=obj_meta->rect_params.width;
bboxheight[obj_meta->class_id]=obj_meta->rect_params.height;
temp_volume1=bboxwidth[obj_meta->class_id]*bboxheight[obj_meta->class_id];
temp_volume2=bboxwidth_max[obj_meta->class_id]*bboxheight_max[obj_meta->class_id];
if(temp_volume1>temp_volume2)
{
bboxwidth_max[obj_meta->class_id]=bboxwidth[obj_meta->class_id];
bboxheight_max[obj_meta->class_id]=bboxheight[obj_meta->class_id];
}
//strcpy(obj_name,pgie_classes_str[obj_meta->class_id]);
//g_print ("obj_name = %s \n", pgie_classes_str[obj_meta->class_id]);
}
print_counter++;
if(print_counter>19){
print_counter=0;
clock_end = clock();
frame_num_current=frame_meta->frame_num;
time_sec=(double)(clock_end-clock_start)/CLOCKS_PER_SEC;
frame_rate=(frame_num_current-frame_num_1)/time_sec;
// g_print ("Frame Number = %d FPS = %d BBoxWidth= %d BBoxHeight= %d \n", (gint)frame_num_current, (gint)frame_rate, vehicle_count, person_count, bboxwidth, bboxheight);
g_print ("FPS: %d; ",(gint)frame_rate);
for (gint i=0; i<80; i++)
{
// if(obj_num[i]>0) g_print("%s:%d(W %d H %d); ", pgie_classes_str[i], obj_num[i], bboxwidth_max[i], bboxheight_max[i]);
if(obj_num[i]>0){
g_print("%s:%d(%d\%); ", pgie_classes_str[i], obj_num[i], (int)(bboxwidth_max[i]*bboxheight_max[i]*100/1920/1080));
//strcat(sendline,pgie_classes_str[i]);
sprintf(str, "%s:%d(%d\%)", pgie_classes_str[i], obj_num[i], (int)(bboxwidth_max[i]*bboxheight_max[i]*100/1920/1080));
strcat(sendline,str);
}
}
g_print("\n");
if(strlen(sendline)>1)
{
r_flag = sendto(sockfd, sendline, strlen(sendline), 0, (struct sockaddr*)&des_addr, sizeof(des_addr));
if (r_flag <= 0)
{
perror("");
exit(-1);
}
}
frame_num_1=frame_num_current;
clock_start = clock();
}
#if 0
display_meta = nvds_acquire_display_meta_from_pool(batch_meta);
NvOSD_TextParams *txt_params = &display_meta->text_params;
txt_params->display_text = g_malloc0 (MAX_DISPLAY_LEN);
offset = snprintf(txt_params->display_text, MAX_DISPLAY_LEN, "Person = %d ", person_count);
offset = snprintf(txt_params->display_text + offset , MAX_DISPLAY_LEN, "Vehicle = %d ", vehicle_count);
/* 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 = "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);
#endif
}
return GST_PAD_PROBE_OK;
}
static gboolean
bus_call (GstBus * bus, GstMessage * msg, gpointer data)
{
GMainLoop *loop = (GMainLoop *) data;
switch (GST_MESSAGE_TYPE (msg)) {
case GST_MESSAGE_EOS:
g_print ("End of stream\n");
g_main_loop_quit (loop);
break;
case GST_MESSAGE_WARNING:
{
gchar *debug;
GError *error;
gst_message_parse_warning (msg, &error, &debug);
g_printerr ("WARNING from element %s: %s\n",
GST_OBJECT_NAME (msg->src), error->message);
g_free (debug);
g_printerr ("Warning: %s\n", error->message);
g_error_free (error);
break;
}
case GST_MESSAGE_ERROR:
{
gchar *debug;
GError *error;
gst_message_parse_error (msg, &error, &debug);
g_printerr ("ERROR from element %s: %s\n",
GST_OBJECT_NAME (msg->src), error->message);
if (debug)
g_printerr ("Error details: %s\n", debug);
g_free (debug);
g_error_free (error);
g_main_loop_quit (loop);
break;
}
#ifndef PLATFORM_TEGRA
case GST_MESSAGE_ELEMENT:
{
if (gst_nvmessage_is_stream_eos (msg)) {
guint stream_id;
if (gst_nvmessage_parse_stream_eos (msg, &stream_id)) {
g_print ("Got EOS from stream %d\n", stream_id);
}
}
break;
}
#endif
default:
break;
}
return TRUE;
}
static void
cb_newpad (GstElement * decodebin, GstPad * decoder_src_pad, gpointer data)
{
g_print ("In cb_newpad\n");
GstCaps *caps = gst_pad_get_current_caps (decoder_src_pad);
const GstStructure *str = gst_caps_get_structure (caps, 0);
const gchar *name = gst_structure_get_name (str);
GstElement *source_bin = (GstElement *) data;
GstCapsFeatures *features = gst_caps_get_features (caps, 0);
/* Need to check if the pad created by the decodebin is for video and not
* audio. */
if (!strncmp (name, "video", 5)) {
/* 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. */
if (gst_caps_features_contains (features, GST_CAPS_FEATURES_NVMM)) {
/* Get the source bin ghost pad */
GstPad *bin_ghost_pad = gst_element_get_static_pad (source_bin, "src");
if (!gst_ghost_pad_set_target (GST_GHOST_PAD (bin_ghost_pad),
decoder_src_pad)) {
g_printerr ("Failed to link decoder src pad to source bin ghost pad\n");
}
gst_object_unref (bin_ghost_pad);
} else {
g_printerr ("Error: Decodebin did not pick nvidia decoder plugin.\n");
}
}
}
static void
decodebin_child_added (GstChildProxy * child_proxy, GObject * object,
gchar * name, gpointer user_data)
{
g_print ("Decodebin child added: %s\n", name);
if (g_strrstr (name, "decodebin") == name) {
g_signal_connect (G_OBJECT (object), "child-added",
G_CALLBACK (decodebin_child_added), user_data);
}
if (g_strstr_len (name, -1, "nvv4l2decoder") == name) {
g_print ("Seting bufapi_version\n");
g_object_set (object, "bufapi-version", TRUE, NULL);
}
}
static GstElement *
create_source_bin (guint index, gchar * uri)
{
GstElement *bin = NULL, *uri_decode_bin = NULL;
gchar bin_name[16] = { };
g_snprintf (bin_name, 15, "source-bin-%02d", index);
/* Create a source GstBin to abstract this bin's content from the rest of the
* pipeline */
bin = gst_bin_new (bin_name);
/* Source element for reading from the uri.
* We will use decodebin and let it figure out the container format of the
* stream and the codec and plug the appropriate demux and decode plugins. */
uri_decode_bin = gst_element_factory_make ("uridecodebin", "uri-decode-bin");
if (!bin || !uri_decode_bin) {
g_printerr ("One element in source bin could not be created.\n");
return NULL;
}
/* We set the input uri to the source element */
g_object_set (G_OBJECT (uri_decode_bin), "uri", uri, NULL);
/* Connect to the "pad-added" signal of the decodebin which generates a
* callback once a new pad for raw data has beed created by the decodebin */
g_signal_connect (G_OBJECT (uri_decode_bin), "pad-added",
G_CALLBACK (cb_newpad), bin);
g_signal_connect (G_OBJECT (uri_decode_bin), "child-added",
G_CALLBACK (decodebin_child_added), bin);
gst_bin_add (GST_BIN (bin), uri_decode_bin);
/* We need to create a ghost pad for the source bin which will act as a proxy
* for the video decoder src pad. The ghost pad will not have a target right
* now. Once the decode bin creates the video decoder and generates the
* cb_newpad callback, we will set the ghost pad target to the video decoder
* src pad. */
if (!gst_element_add_pad (bin, gst_ghost_pad_new_no_target ("src",
GST_PAD_SRC))) {
g_printerr ("Failed to add ghost pad in source bin\n");
return NULL;
}
return bin;
}
static GstElement *
create_camera_source_bin (guint index, gchar * uri)
{
GstElement *bin = NULL;
GstCaps *caps_RGBA_NVMM = NULL;
GstCaps *caps_bayer = NULL;
GstCaps *caps_RGBA = NULL;
GstCaps *caps1 = NULL;
gboolean ret = FALSE;
gchar bin_name[16] = { };
g_snprintf (bin_name, 15, "source-bin-%02d", index);
bin = gst_bin_new (bin_name);
//create a souce for ARAVIS SDK
GstElement *src_elem = gst_element_factory_make ("aravissrc", "src_elem");
if (!src_elem)
{
g_printerr ("Could not create 'src_elem'\n");
return NULL;
}
GstElement *bayer2rgb_elem= gst_element_factory_make("bayer2rgb", "bayer2rgb_elem");
if (!bayer2rgb_elem)
{
g_printerr ("Could not create 'bayer2rgb_elem'\n");
return NULL;
}
GstElement *cap_filter = gst_element_factory_make ("capsfilter", "src_cap_filter");
if (!cap_filter){
g_printerr ("Could not create 'src_cap_filter'\n");
return NULL;
}
caps_RGBA_NVMM = gst_caps_new_simple("video/x-raw", "format", G_TYPE_STRING, "RGBA",
"width", G_TYPE_INT, 1920, "height", G_TYPE_INT, 1080,
"framerate", GST_TYPE_FRACTION, 40, 1, NULL);
caps_RGBA = gst_caps_new_simple("video/x-raw", "format", G_TYPE_STRING, "RGBA",
"width", G_TYPE_INT, 1920, "height", G_TYPE_INT, 1080,
"framerate", GST_TYPE_FRACTION, 40, 1, NULL);
caps_bayer = gst_caps_new_simple("video/x-bayer", "width", G_TYPE_INT, 1920, "height", G_TYPE_INT, 1080,
"framerate", GST_TYPE_FRACTION, 40, 1, NULL);
GstElement *nvvidconv1, *nvvidconv2;
GstCapsFeatures *feature = NULL;
nvvidconv1 = gst_element_factory_make ("videoconvert", "nvvidconv1");
if (!nvvidconv1){
g_printerr ("Failed to create 'nvvidcovn1'\n");
return NULL;
}
feature = gst_caps_features_new ("memory:NVMM", NULL);
gst_caps_set_features (caps_RGBA_NVMM, 0, feature);
g_object_set (G_OBJECT (cap_filter), "caps", caps_RGBA_NVMM, NULL);
nvvidconv2 = gst_element_factory_make ("nvvideoconvert", "nvvidconv2");
if (!nvvidconv2){char sendline[1024] = {"HelloWJ"};
g_printerr ("Failed to create 'nvvidcovn2'\n");
return NULL;
}
//important to use the memory type: 3
g_object_set (G_OBJECT (nvvidconv2), "gpu-id", 0, "nvbuf-memory-type", 0, NULL);
gst_bin_add_many (GST_BIN (bin), src_elem, bayer2rgb_elem, nvvidconv1, nvvidconv2, cap_filter, NULL);
//NVGSTDS_LINK_ELEMENT
if (!gst_element_link_filtered(src_elem, bayer2rgb_elem, caps_bayer)){
g_printerr ("Failed to link 'src_elem, bayer2rgb_elem'\n");
return NULL;
}
if (!gst_element_link(bayer2rgb_elem, nvvidconv1)){
g_printerr ("Failed to link 'bayer2rgb_elem, nvvidcovn1'\n");
return NULL;
}
if (!gst_element_link_filtered(nvvidconv1,nvvidconv2,caps_RGBA)){
g_printerr ("Failed to link 'nvvidcovn1, nvvidcovn2'\n");
return NULL;
}
if (!gst_element_link (nvvidconv2, cap_filter)){
g_printerr ("Failed to link 'nvvidcovn2, cap_filter'\n");
return NULL;
}
// NVGSTDS_BIN_ADD_GHOST_PAD (bin, cap_filter, "src");
GstPad *gstpad = gst_element_get_static_pad (cap_filter, "src");
gst_element_add_pad (bin, gst_ghost_pad_new ("src", gstpad));
gst_object_unref(gstpad);
////gchar device[64];
////g_snprintf (device, sizeof (device), "/dev/video%d", 0);
////g_object_set (G_OBJECT (src_elem), "device", device, NULL);
return bin;
}
int
main (int argc, char *argv[])
{
GMainLoop *loop = NULL;
GstElement *pipeline = NULL, *streammux = NULL, *sink = NULL, *pgie = NULL, *nvosd = NULL, *nvvidconv = NULL, *nvvidconv1 = NULL, *enc = NULL;
#ifdef PLATFORM_TEGRA
GstElement *transform = NULL;
#endif
GstBus *bus = NULL;
guint bus_watch_id;
GstPad *tiler_src_pad = NULL;
guint i, num_sources;
guint tiler_rows, tiler_columns;
guint pgie_batch_size;
char file_name[100];
guint with_default = 1;
const int on = 1;
/* Check input arguments */
if (argc == 2) {
strcpy(file_name, argv[1]);
with_default = 0; //otherwise it goes video-render
}
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
setsockopt(sockfd, SOL_SOCKET, SO_BROADCAST, &on, sizeof(on));
bzero(&des_addr, sizeof(des_addr));
des_addr.sin_family = AF_INET;
des_addr.sin_addr.s_addr = inet_addr("192.168.8.255");
des_addr.sin_port = htons(9999);
///num_sources = argc - 1;
num_sources=1;
/* Standard GStreamer initialization */
gst_init (&argc, &argv);
loop = g_main_loop_new (NULL, FALSE);
/* Create gstreamer elements */
/* Create Pipeline element that will form a connection of other elements */
pipeline = gst_pipeline_new ("gige-pipeline");
/* Create nvstreammux instance to form batches from one or more sources. */
streammux = gst_element_factory_make ("nvstreammux", "stream-muxer");
if (!pipeline || !streammux) {
g_printerr ("One element could not be created. Exiting.\n");
return -1;
}
gst_bin_add (GST_BIN (pipeline), streammux);
for (i = 0; i < num_sources; i++) {
GstPad *sinkpad, *srcpad;
gchar pad_name[16] = { };
//// GstElement *source_bin = create_source_bin (i, argv[i + 1]);
GstElement *source_bin = create_camera_source_bin (i, argv[i + 1]);
if (!source_bin) {
g_printerr ("Failed to create source bin. Exiting.\n");
return -1;
}
gst_bin_add (GST_BIN (pipeline), source_bin);
g_snprintf (pad_name, 15, "sink_%u", i);
sinkpad = gst_element_get_request_pad (streammux, pad_name);
if (!sinkpad) {
g_printerr ("Streammux request sink pad failed. Exiting.\n");
return -1;
}
srcpad = gst_element_get_static_pad (source_bin, "src");
if (!srcpad) {
g_printerr ("Failed to get src pad of source bin. Exiting.\n");
return -1;
}
if (gst_pad_link (srcpad, sinkpad) != GST_PAD_LINK_OK) {
g_printerr ("Failed to link source bin to stream muxer. Exiting.\n");
return -1;
}
gst_object_unref (srcpad);
gst_object_unref (sinkpad);
}
/* Use nvinfer to infer on batched frame. */
pgie = gst_element_factory_make ("nvinfer", "primary-nvinference-engine");
/* Use nvtiler to composite the batched frames into a 2D tiled array based
* on the source of the frames. */
//tiler = gst_element_factory_make ("nvmultistreamtiler", "nvtiler");
/* Use convertor to convert from NV12 to RGBA as required by dsexample */
nvvidconv = gst_element_factory_make ("nvvideoconvert", "nvvideo-converter");
nvvidconv1 = gst_element_factory_make ("nvvideoconvert", "nvvideo-converter1");
/* Create OSD to draw on the converted RGBA buffer */
nvosd = gst_element_factory_make ("nvdsosd", "nv-onscreendisplay");
/* Finally render the osd output */
#ifdef PLATFORM_TEGRA
transform = gst_element_factory_make ("nvegltransform", "nvegl-transform");
#endif
//save the entire video stream: nvvideoconvert ! jpegenc ! filesink
if(!with_default) {
sink = gst_element_factory_make ("filesink", "file-sink");
enc = gst_element_factory_make ("nvv4l2h264enc", "h264-enc");
g_object_set (G_OBJECT (sink), "location", file_name, NULL);
//g_object_set (G_OBJECT (sink), "location", "./out.h264", NULL);
}else {
sink = gst_element_factory_make ("nveglglessink", "nvvideo-renderer");
g_object_set (G_OBJECT(sink), "sync", FALSE, NULL);
}
if (!pgie || !nvvidconv || !nvosd || !sink ) {
g_printerr ("One element could not be created. Exiting.\n");
return -1;
}
#ifdef PLATFORM_TEGRA
if(!transform) {
g_printerr ("One tegra element could not be created. Exiting.\n");
return -1;
}
#endif
//use the meory type: 3
g_object_set (G_OBJECT (streammux), "width", MUXER_OUTPUT_WIDTH, "height",
MUXER_OUTPUT_HEIGHT, "batch-size", num_sources, "live-source", 1,
"batched-push-timeout", MUXER_BATCH_TIMEOUT_USEC, "gpu-id", 0, "nvbuf-memory-type", 0, NULL);
g_object_set (G_OBJECT (nvvidconv), "nvbuf-memory-type", 0, NULL);
//g_object_set (G_OBJECT (streammux), "width", MUXER_OUTPUT_WIDTH, "height",
// MUXER_OUTPUT_HEIGHT, "batch-size", num_sources, "live-source", 1,
// "batched-push-timeout", MUXER_BATCH_TIMEOUT_USEC, NULL);
/* Configure the nvinfer element using the nvinfer config file. */
g_object_set (G_OBJECT (pgie),
"config-file-path", "config_infer_primary_yoloV3.txt", NULL);
/* Override the batch-size set in the config file with the number of sources. */
g_object_get (G_OBJECT (pgie), "batch-size", &pgie_batch_size, NULL);
if (pgie_batch_size != num_sources) {
g_printerr
("WARNING: Overriding infer-config batch-size (%d) with number of sources (%d)\n",
pgie_batch_size, num_sources);
g_object_set (G_OBJECT (pgie), "batch-size", num_sources, NULL);
}
//tiler_rows = (guint) sqrt (num_sources);
//tiler_columns = (guint) ceil (1.0 * num_sources / tiler_rows);
/* we set the tiler properties here */
//g_object_set (G_OBJECT (tiler), "rows", tiler_rows, "columns", tiler_columns,
// "width", TILED_OUTPUT_WIDTH, "height", TILED_OUTPUT_HEIGHT, NULL);
/* we add a message handler */
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
bus_watch_id = gst_bus_add_watch (bus, bus_call, loop);
gst_object_unref (bus);
/* Set up the pipeline */
/* we add all elements into the pipeline */
#ifdef PLATFORM_TEGRA
gst_bin_add_many (GST_BIN (pipeline), pgie, nvosd, transform, sink, NULL);
/* we link the elements together
* nvstreammux -> nvinfer -> nvosd -> video-renderer */
if (!gst_element_link_many (streammux, pgie, nvosd, transform, sink, NULL)) {
g_printerr ("Elements could not be linked. Exiting.\n");
return -1;
}
#else
if (!with_default){
//save file: with “nvvideoconvert ! jpegenc ! filesink”
gst_bin_add_many (GST_BIN (pipeline), pgie, nvvidconv, nvosd, nvvidconv1, enc, sink, NULL);
/* we link the elements together
* nvstreammux -> nvinfer -> nvosd -> nvvidcov1 -> enc -> sink */
if (!gst_element_link_many (streammux, pgie, nvvidconv, nvosd, nvvidconv1, enc, sink, NULL)) {
g_printerr ("Elements could not be linked. Exiting.\n");
return -1;
}
}else{
/* we link the elements together
* nvstreammux -> nvinfer -> nvosd -> video-renderer */
gst_bin_add_many (GST_BIN (pipeline), pgie, nvvidconv, nvosd, sink, NULL);
if (!gst_element_link_many (streammux, pgie, nvvidconv, nvosd, sink, NULL)) {
g_printerr ("Elements could not be linked. Exiting.\n");
return -1;
}
}
#endif
/* Lets add probe to get informed of the meta data generated, we add probe to
* the sink pad of the osd element, since by that time, the buffer would have
* had got all the metadata. */
tiler_src_pad = gst_element_get_static_pad (pgie, "src");
//tiler_src_pad = gst_element_get_static_pad (nvosd, "src");
if (!tiler_src_pad)
g_print ("Unable to get src pad\n");
else
gst_pad_add_probe (tiler_src_pad, GST_PAD_PROBE_TYPE_BUFFER,
tiler_src_pad_buffer_probe, NULL, NULL);
/* Set the pipeline to "playing" state */
g_print ("Now playing:");
// for (i = 0; i < num_sources; i++) {
// g_print (" %s,", argv[i + 1]);
// }
g_print ("\n");
gst_element_set_state (pipeline, GST_STATE_PLAYING);
/* Wait till pipeline encounters an error or EOS */
g_print ("Running...\n");
clock_start = clock();
g_main_loop_run (loop);
/* Out of the main loop, clean up nicely */
g_print ("Returned, stopping playback\n");
gst_element_set_state (pipeline, GST_STATE_NULL);
g_print ("Deleting pipeline\n");
gst_object_unref (GST_OBJECT (pipeline));
g_source_remove (bus_watch_id);
g_main_loop_unref(loop);
return 0;
}
The error happens when the code reaches:
GstElement *src_elem = gst_element_factory_make ("aravissrc", "src_elem");
if (!src_elem)
{
g_printerr ("Could not create 'src_elem'\n");
return NULL;
}
When I execute GStreamer with the following command it seems to work, a window appears and shows video.
gst-launch-1.0 aravissrc ! video/x-raw, width=960, height=720, framerate=10/1 ! videoconvert ! xvimagesink
With this, I don’t understand what is wrong with Aravis because it does work with the command above.
Does anyone have any solutions to this problem?
Thanks in advance.