Hardware Platform (Jetson / GPU) Jetson nano 4GB
• DeepStream Version 5.1
• JetPack Version (valid for Jetson only) 4.5.1
• Issue Type( questions, new requirements, bugs) question
i want to see FPS printed on terminal for deepstream-test2 sample app
so i following this post DeepStream SDK FAQ - #13 by bcao
made following changes in deepstream_test2_app.c
here is the modified file:
/*
- Copyright (c) 2018-2020, NVIDIA CORPORATION. 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 <stdlib.h>
#include <string.h>
#include <cuda_runtime_api.h>
#include “gstnvdsmeta.h”
#include “deepstream_perf.h”
#define PGIE_CONFIG_FILE “dstest2_pgie_config.txt”
#define SGIE1_CONFIG_FILE “dstest2_sgie1_config.txt”
#define SGIE2_CONFIG_FILE “dstest2_sgie2_config.txt”
#define SGIE3_CONFIG_FILE “dstest2_sgie3_config.txt”
#define MAX_DISPLAY_LEN 64
#define TRACKER_CONFIG_FILE “dstest2_tracker_config.txt”
#define MAX_TRACKING_ID_LEN 16
#define PGIE_CLASS_ID_VEHICLE 0
#define PGIE_CLASS_ID_PERSON 2
/* 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 40000
#define MAX_STREAMS 64
typedef struct
{
/** identifies the stream ID */
guint32 stream_index;
gdouble fps[MAX_STREAMS];
gdouble fps_avg[MAX_STREAMS];
guint32 num_instances;
guint header_print_cnt;
GMutex fps_lock;
gpointer context;
/** Test specific info */
guint32 set_batch_size;
}DemoPerfCtx;
typedef struct {
GMutex *lock;
int num_sources;
}LatencyCtx;
gint frame_number = 0;
/* These are the strings of the labels for the respective models */
gchar sgie1_classes_str[12][32] = { “black”, “blue”, “brown”, “gold”, “green”,
“grey”, “maroon”, “orange”, “red”, “silver”, “white”, “yellow”
};
gchar sgie2_classes_str[20][32] =
{ “Acura”, “Audi”, “BMW”, “Chevrolet”, “Chrysler”,
“Dodge”, “Ford”, “GMC”, “Honda”, “Hyundai”, “Infiniti”, “Jeep”, “Kia”,
“Lexus”, “Mazda”, “Mercedes”, “Nissan”,
“Subaru”, “Toyota”, “Volkswagen”
};
gchar sgie3_classes_str[6][32] = { “coupe”, “largevehicle”, “sedan”, “suv”,
“truck”, “van”
};
gchar pgie_classes_str[4][32] =
{ “Vehicle”, “TwoWheeler”, “Person”, “RoadSign” };
/* gie_unique_id is one of the properties in the above dstest2_sgiex_config.txt
- files. These should be unique and known when we want to parse the Metadata
- respective to the sgie labels. Ideally these should be read from the config
- files but for brevity we ensure they are same. */
guint sgie1_unique_id = 2;
guint sgie2_unique_id = 3;
guint sgie3_unique_id = 4;
/**
- callback function to print the performance numbers of each stream.
*/
static void
perf_cb (gpointer context, NvDsAppPerfStruct * str)
{
DemoPerfCtx *thCtx = (DemoPerfCtx *) context;
g_mutex_lock(&thCtx->fps_lock);
/** str->num_instances is == num_sources */
guint32 numf = str->num_instances;
guint32 i;
for (i = 0; i < numf; i++) {
thCtx->fps[i] = str->fps[i];
thCtx->fps_avg[i] = str->fps_avg[i];
}
thCtx->context = thCtx;
g_print (“**PERF: “);
for (i = 0; i < numf; i++) {
g_print (”%.2f (%.2f)\t”, thCtx->fps[i], thCtx->fps_avg[i]);
}
g_print (“\n”);
g_mutex_unlock(&thCtx->fps_lock);
}
/**
- callback function to print the latency of each component in the pipeline.
*/
static GstPadProbeReturn
latency_measurement_buf_prob(GstPad * pad, GstPadProbeInfo * info, gpointer u_data)
{
LatencyCtx ctx = (LatencyCtx ) u_data;
static int batch_num = 0;
guint i = 0, num_sources_in_batch = 0;
if(nvds_enable_latency_measurement)
{
GstBuffer buf = (GstBuffer ) info->data;
NvDsFrameLatencyInfo latency_info = NULL;
g_mutex_lock (ctx->lock);
latency_info = (NvDsFrameLatencyInfo )
calloc(1, ctx->num_sources * sizeof(NvDsFrameLatencyInfo));;
g_print("\nBATCH-NUM = %d********\n",batch_num);
num_sources_in_batch = nvds_measure_buffer_latency(buf, latency_info);
for(i = 0; i < num_sources_in_batch; i++)
{
g_print("Source id = %d Frame_num = %d Frame latency = %lf (ms) \n",
latency_info[i].source_id,
latency_info[i].frame_num,
latency_info[i].latency);
}
g_mutex_unlock (ctx->lock);
batch_num++;
}
return GST_PAD_PROBE_OK;
}
/* 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. */
static GstPadProbeReturn
osd_sink_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;
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_VEHICLE) {
vehicle_count++;
num_rects++;
}
if (obj_meta->class_id == PGIE_CLASS_ID_PERSON) {
person_count++;
num_rects++;
}
}
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 = 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);}
// g_print ("Frame Number = %d Number of objects = %d "
// “Vehicle Count = %d Person Count = %d\n”,
// frame_number, num_rects, vehicle_count, person_count);
frame_number++;
return GST_PAD_PROBE_OK;
}
static GstPadProbeReturn
sink_bin_buf_probe (GstPad * pad, GstPadProbeInfo * info, gpointer u_data)
{
NvDsAppPerfStructInt *str = (NvDsAppPerfStructInt *) u_data;
NvDsBatchMeta *batch_meta =
gst_buffer_get_nvds_batch_meta (GST_BUFFER (info->data));
if (!batch_meta)
return GST_PAD_PROBE_OK;
if (!str->stop) {
g_mutex_lock (&str->struct_lock);
for (NvDsMetaList * l_frame = batch_meta->frame_meta_list; l_frame;
l_frame = l_frame->next) {
NvDsFrameMeta *frame_meta = (NvDsFrameMeta *) l_frame->data;
NvDsInstancePerfStruct *str1 = &str->instance_str[frame_meta->pad_index];
gettimeofday (&str1->last_fps_time, NULL);
if (str1->start_fps_time.tv_sec == 0 && str1->start_fps_time.tv_usec == 0) {
str1->start_fps_time = str1->last_fps_time;
} else {
str1->buffer_cnt++;
}
}
g_mutex_unlock (&str->struct_lock);
}
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_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;
}
default:
break;
}
return TRUE;
}
/* Tracker config parsing */
#define CHECK_ERROR(error)
if (error) {
g_printerr (“Error while parsing config file: %s\n”, error->message);
goto done;
}
#define CONFIG_GROUP_TRACKER “tracker”
#define CONFIG_GROUP_TRACKER_WIDTH “tracker-width”
#define CONFIG_GROUP_TRACKER_HEIGHT “tracker-height”
#define CONFIG_GROUP_TRACKER_LL_CONFIG_FILE “ll-config-file”
#define CONFIG_GROUP_TRACKER_LL_LIB_FILE “ll-lib-file”
#define CONFIG_GROUP_TRACKER_ENABLE_BATCH_PROCESS “enable-batch-process”
#define CONFIG_GPU_ID “gpu-id”
static gchar *
get_absolute_file_path (gchar *cfg_file_path, gchar *file_path)
{
gchar abs_cfg_path[PATH_MAX + 1];
gchar *abs_file_path;
gchar *delim;
if (file_path && file_path[0] == ‘/’) {
return file_path;
}
if (!realpath (cfg_file_path, abs_cfg_path)) {
g_free (file_path);
return NULL;
}
// Return absolute path of config file if file_path is NULL.
if (!file_path) {
abs_file_path = g_strdup (abs_cfg_path);
return abs_file_path;
}
delim = g_strrstr (abs_cfg_path, “/”);
*(delim + 1) = ‘\0’;
abs_file_path = g_strconcat (abs_cfg_path, file_path, NULL);
g_free (file_path);
return abs_file_path;
}
static gboolean
set_tracker_properties (GstElement *nvtracker)
{
gboolean ret = FALSE;
GError *error = NULL;
gchar **keys = NULL;
gchar **key = NULL;
GKeyFile *key_file = g_key_file_new ();
if (!g_key_file_load_from_file (key_file, TRACKER_CONFIG_FILE, G_KEY_FILE_NONE,
&error)) {
g_printerr (“Failed to load config file: %s\n”, error->message);
return FALSE;
}
keys = g_key_file_get_keys (key_file, CONFIG_GROUP_TRACKER, NULL, &error);
CHECK_ERROR (error);
for (key = keys; *key; key++) {
if (!g_strcmp0 (*key, CONFIG_GROUP_TRACKER_WIDTH)) {
gint width =
g_key_file_get_integer (key_file, CONFIG_GROUP_TRACKER,
CONFIG_GROUP_TRACKER_WIDTH, &error);
CHECK_ERROR (error);
g_object_set (G_OBJECT (nvtracker), “tracker-width”, width, NULL);
} else if (!g_strcmp0 (*key, CONFIG_GROUP_TRACKER_HEIGHT)) {
gint height =
g_key_file_get_integer (key_file, CONFIG_GROUP_TRACKER,
CONFIG_GROUP_TRACKER_HEIGHT, &error);
CHECK_ERROR (error);
g_object_set (G_OBJECT (nvtracker), “tracker-height”, height, NULL);
} else if (!g_strcmp0 (*key, CONFIG_GPU_ID)) {
guint gpu_id =
g_key_file_get_integer (key_file, CONFIG_GROUP_TRACKER,
CONFIG_GPU_ID, &error);
CHECK_ERROR (error);
g_object_set (G_OBJECT (nvtracker), “gpu_id”, gpu_id, NULL);
} else if (!g_strcmp0 (key, CONFIG_GROUP_TRACKER_LL_CONFIG_FILE)) {
char ll_config_file = get_absolute_file_path (TRACKER_CONFIG_FILE,
g_key_file_get_string (key_file,
CONFIG_GROUP_TRACKER,
CONFIG_GROUP_TRACKER_LL_CONFIG_FILE, &error));
CHECK_ERROR (error);
g_object_set (G_OBJECT (nvtracker), “ll-config-file”, ll_config_file, NULL);
} else if (!g_strcmp0 (key, CONFIG_GROUP_TRACKER_LL_LIB_FILE)) {
char ll_lib_file = get_absolute_file_path (TRACKER_CONFIG_FILE,
g_key_file_get_string (key_file,
CONFIG_GROUP_TRACKER,
CONFIG_GROUP_TRACKER_LL_LIB_FILE, &error));
CHECK_ERROR (error);
g_object_set (G_OBJECT (nvtracker), “ll-lib-file”, ll_lib_file, NULL);
} else if (!g_strcmp0 (*key, CONFIG_GROUP_TRACKER_ENABLE_BATCH_PROCESS)) {
gboolean enable_batch_process =
g_key_file_get_integer (key_file, CONFIG_GROUP_TRACKER,
CONFIG_GROUP_TRACKER_ENABLE_BATCH_PROCESS, &error);
CHECK_ERROR (error);
g_object_set (G_OBJECT (nvtracker), “enable_batch_process”,
enable_batch_process, NULL);
} else {
g_printerr (“Unknown key ‘%s’ for group [%s]”, *key,
CONFIG_GROUP_TRACKER);
}
}
ret = TRUE;
done:
if (error) {
g_error_free (error);
}
if (keys) {
g_strfreev (keys);
}
if (!ret) {
g_printerr (“%s failed”, func);
}
return ret;
}
int
main (int argc, char *argv)
{
GMainLoop *loop = NULL;
GstElement *pipeline = NULL, *source = NULL, *h264parser = NULL,
*decoder = NULL, *streammux = NULL, *sink = NULL, *pgie = NULL, *nvvidconv = NULL,
*nvosd = NULL, *sgie1 = NULL, *sgie2 = NULL, *sgie3 = NULL, *nvtracker = NULL;
g_print (“With tracker\n”);
GstElement *transform = NULL;
GstBus *bus = NULL;
guint bus_watch_id = 0;
GstPad *osd_sink_pad = NULL;
int current_device = -1;
cudaGetDevice(¤t_device);
struct cudaDeviceProp prop;
cudaGetDeviceProperties(&prop, current_device);
/* Check input arguments */
if (argc != 2) {
g_printerr (“Usage: %s \n”, argv[0]);
return -1;
}
/* Standard GStreamer initialization */
gst_init (&argc, &argv);
loop = g_main_loop_new (NULL, FALSE);
/* Create gstreamer elements */
/* Create Pipeline element that will be a container of other elements */
pipeline = gst_pipeline_new (“dstest2-pipeline”);
/* Source element for reading from the file */
source = gst_element_factory_make (“filesrc”, “file-source”);
/* Since the data format in the input file is elementary h264 stream,
- we need a h264parser */
h264parser = gst_element_factory_make (“h264parse”, “h264-parser”);
/* Use nvdec_h264 for hardware accelerated decode on GPU */
decoder = gst_element_factory_make (“nvv4l2decoder”, “nvv4l2-decoder”);
/* 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;
}
/* Use nvinfer to run inferencing on decoder’s output,
- behaviour of inferencing is set through config file */
pgie = gst_element_factory_make (“nvinfer”, “primary-nvinference-engine”);
/* We need to have a tracker to track the identified objects */
nvtracker = gst_element_factory_make (“nvtracker”, “tracker”);
/* We need three secondary gies so lets create 3 more instances of
nvinfer */
sgie1 = gst_element_factory_make (“nvinfer”, “secondary1-nvinference-engine”);
sgie2 = gst_element_factory_make (“nvinfer”, “secondary2-nvinference-engine”);
sgie3 = gst_element_factory_make (“nvinfer”, “secondary3-nvinference-engine”);
/* Use convertor to convert from NV12 to RGBA as required by nvosd */
nvvidconv = gst_element_factory_make (“nvvideoconvert”, “nvvideo-converter”);
/* Create OSD to draw on the converted RGBA buffer */
nvosd = gst_element_factory_make (“nvdsosd”, “nv-onscreendisplay”);
/* Finally render the osd output */
if(prop.integrated) {
transform = gst_element_factory_make (“nvegltransform”, “nvegl-transform”);
}
sink = gst_element_factory_make (“nveglglessink”, “nvvideo-renderer”);
if (!source || !h264parser || !decoder || !pgie ||
!nvtracker || !sgie1 || !sgie2 || !sgie3 || !nvvidconv || !nvosd || !sink) {
g_printerr (“One element could not be created. Exiting.\n”);
return -1;
}
if(!transform && prop.integrated) {
g_printerr (“One tegra element could not be created. Exiting.\n”);
return -1;
}
/* Set the input filename to the source element */
g_object_set (G_OBJECT (source), “location”, argv[1], NULL);
g_object_set (G_OBJECT (streammux), “batch-size”, 1, NULL);
g_object_set (G_OBJECT (streammux), “width”, MUXER_OUTPUT_WIDTH, “height”,
MUXER_OUTPUT_HEIGHT,
“batched-push-timeout”, MUXER_BATCH_TIMEOUT_USEC, NULL);
/* Set all the necessary properties of the nvinfer element,
- the necessary ones are : */
g_object_set (G_OBJECT (pgie), “config-file-path”, PGIE_CONFIG_FILE, NULL);
g_object_set (G_OBJECT (sgie1), “config-file-path”, SGIE1_CONFIG_FILE, NULL);
g_object_set (G_OBJECT (sgie2), “config-file-path”, SGIE2_CONFIG_FILE, NULL);
g_object_set (G_OBJECT (sgie3), “config-file-path”, SGIE3_CONFIG_FILE, NULL);
/* Set necessary properties of the tracker element. */
if (!set_tracker_properties(nvtracker)) {
g_printerr (“Failed to set tracker properties. Exiting.\n”);
return -1;
}
/* 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 /
/ decoder | pgie1 | nvtracker | sgie1 | sgie2 | sgie3 | etc… */
if(prop.integrated) {
gst_bin_add_many (GST_BIN (pipeline),
source, h264parser, decoder, streammux, pgie, nvtracker, sgie1, sgie2, sgie3,
nvvidconv, nvosd, transform, sink, NULL);
}
else {
gst_bin_add_many (GST_BIN (pipeline),
source, h264parser, decoder, streammux, pgie, nvtracker, sgie1, sgie2, sgie3,
nvvidconv, nvosd, sink, NULL);
}
GstPad *sinkpad, *srcpad;
gchar pad_name_sink[16] = “sink_0”;
gchar pad_name_src[16] = “src”;
sinkpad = gst_element_get_request_pad (streammux, pad_name_sink);
if (!sinkpad) {
g_printerr (“Streammux request sink pad failed. Exiting.\n”);
return -1;
}
srcpad = gst_element_get_static_pad (decoder, pad_name_src);
if (!srcpad) {
g_printerr (“Decoder request src pad failed. Exiting.\n”);
return -1;
}
if (gst_pad_link (srcpad, sinkpad) != GST_PAD_LINK_OK) {
g_printerr (“Failed to link decoder to stream muxer. Exiting.\n”);
return -1;
}
gst_object_unref (sinkpad);
gst_object_unref (srcpad);
/* Link the elements together */
if (!gst_element_link_many (source, h264parser, decoder, NULL)) {
g_printerr (“Elements could not be linked: 1. Exiting.\n”);
return -1;
}
if(prop.integrated) {
if (!gst_element_link_many (streammux, pgie, nvtracker, sgie1,
sgie2, sgie3, nvvidconv, nvosd, transform, sink, NULL)) {
g_printerr (“Elements could not be linked. Exiting.\n”);
return -1;
}
}
else {
if (!gst_element_link_many (streammux, pgie, nvtracker, sgie1,
sgie2, sgie3, nvvidconv, nvosd, sink, NULL)) {
g_printerr (“Elements could not be linked. Exiting.\n”);
return -1;
}
}
/* 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. */
osd_sink_pad = gst_element_get_static_pad (nvosd, “sink”);
if (!osd_sink_pad)
g_print (“Unable to get sink pad\n”);
else
gst_pad_add_probe (osd_sink_pad, GST_PAD_PROBE_TYPE_BUFFER,
osd_sink_pad_buffer_probe, NULL, NULL);
GstPad *sink_pad = gst_element_get_static_pad (nvvidconv, “src”);
if (!sink_pad)
g_print (“Unable to get sink pad\n”);
else {
LatencyCtx *ctx = (LatencyCtx *)g_malloc0(sizeof(LatencyCtx));
ctx->lock = (GMutex *)g_malloc0(sizeof(GMutex));
ctx->num_sources = argc - 2;
gst_pad_add_probe (sink_pad, GST_PAD_PROBE_TYPE_BUFFER,
latency_measurement_buf_prob, ctx, NULL);
}
gst_object_unref (sink_pad);
GstPad *tiler_pad = gst_element_get_static_pad (nvtracker, “sink”);
if (!tiler_pad)
g_print (“Unable to get tiler_pad pad\n”);
else {
NvDsAppPerfStructInt *str = (NvDsAppPerfStructInt *)g_malloc0(sizeof(NvDsAppPerfStructInt));
DemoPerfCtx *perf_ctx = (DemoPerfCtx *)g_malloc0(sizeof(DemoPerfCtx));
g_mutex_init(&perf_ctx->fps_lock);
str->context = perf_ctx;
enable_perf_measurement (str, tiler_pad, argc-2, 1, 0, perf_cb);
}
gst_object_unref (tiler_pad);
gst_object_unref (osd_sink_pad);
/* Set the pipeline to “playing” state */
g_print (“Now playing: %s\n”, argv[1]);
gst_element_set_state (pipeline, GST_STATE_PLAYING);
/* Iterate */
g_print (“Running…\n”);
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;
}
when i execute i get this error: undefined reference to `enable_perf_measurement’
what do i do?