Hi mchi,
I have a hacked up version of the deepstream_test3.cpp example that approximates what I’m trying to do re: dynamic clipping… and although similar, the actual clipping seems to look better in my application.
That said, both versions produce the same NvMapMemCacheMaint:1075334668 failed [14] messages.
I’ve been trying to follow the Dynamically changing the pipeline documentation on the GStreamer site as a guide for some help on this.
I’m not exactly sure how you’d like me to share this, as the examples a bit big from direct paste… but here it is for now. Let me know if there’s another approach you’d prefer.
Thanks,
Robert
P.S. although deepstream_test3.cpp supports multiple sources, it only makes sense to use one for this example.
/*
* Copyright (c) 2018-2019, 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 <math.h>
#include <string.h>
#include <sys/time.h>
#include "gstnvdsmeta.h"
//#include "gstnvstreammeta.h"
#ifndef PLATFORM_TEGRA
#include "gst-nvmessage.h"
#endif
#define MAX_DISPLAY_LEN 64
#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 1280
#define MUXER_OUTPUT_HEIGHT 720
/* 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 1280
#define TILED_OUTPUT_HEIGHT 720
/* 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"
gchar pgie_classes_str[4][32] = { "Vehicle", "TwoWheeler", "Person",
"RoadSign"
};
#define FPS_PRINT_INTERVAL 300
//static struct timeval start_time = { };
//static guint probe_counter = 0;
/* make the elements static for simplicity */
static GstElement *pipeline = NULL, *streammux = NULL, *sink = NULL, *pgie = NULL,
*queue = NULL, *nvvidconv = NULL, *nvosd = NULL, *tiler = NULL;
/* tiler_sink_pad_buffer_probe will extract metadata received on OSD sink pad
* and update params for drawing rectangle, object information etc. */
static NvOSD_RectParams crop_rect_params = {};
static GstPadProbeReturn consume_eos_prop(GstPad* pPad,
GstPadProbeInfo* pInfo, gpointer u_data)
{
if (GST_EVENT_TYPE(GST_PAD_PROBE_INFO_DATA(pInfo)) != GST_EVENT_EOS)
{
return GST_PAD_PROBE_PASS;
}
// remove the probe first
gst_pad_remove_probe(pPad, GST_PAD_PROBE_INFO_ID(pInfo));
return GST_PAD_PROBE_DROP;
}
/* video converter_sink_pad_buffer_probe will extract metadata received on OSD sink pad
* and update params for drawing rectangle, object information etc. */
static GstPadProbeReturn
vidconv_src_pad_idle_probe (GstPad * pad, GstPadProbeInfo * info,
gpointer rect_params)
{
NvOSD_RectParams* crop_params = (NvOSD_RectParams*)rect_params;
gchar crop_dim[20] = { };
GstPad* conv_src_pad = gst_element_get_static_pad(nvvidconv, "src");
GstPad* osd_sink_pad = gst_element_get_static_pad(nvosd, "sink");
/* unlink the pads between the nvvidconv and the nvosd */
gst_pad_unlink(conv_src_pad, osd_sink_pad);
/* generate the crop dimensions string and update the video-converter's
* source and destination crop properties */
g_snprintf (crop_dim, 19, "%u:%u:%u:%u",
crop_params->left, crop_params->top, crop_params->width, crop_params->height);
g_object_set (G_OBJECT (nvvidconv), "src-crop", crop_dim, "dest-crop", crop_dim, NULL);
/* Re-link the pads for the new settings to take effect */
gst_pad_link(conv_src_pad, osd_sink_pad);
/* The unlink will cause the OSD to generate an EOS which we need to catch and drop */
gst_pad_add_probe(osd_sink_pad, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM, consume_eos_prop, NULL, NULL);
gst_object_unref(conv_src_pad);
gst_object_unref(osd_sink_pad);
return GST_PAD_PROBE_REMOVE;
}
/* 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 crop_params)
{
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;
GstPad* conv_src_pad = gst_element_get_static_pad(nvvidconv, "src");
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);
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) {
memcpy(crop_params, &(obj_meta->rect_params), sizeof(NvOSD_RectParams));
gst_pad_add_probe(conv_src_pad, GST_PAD_PROBE_TYPE_IDLE, vidconv_src_pad_idle_probe, crop_params, NULL);
gst_object_unref(conv_src_pad);
/* Done processing the frame after first occurence of PERSON */
return GST_PAD_PROBE_PASS;
}
}
}
return GST_PAD_PROBE_PASS;
}
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[20] = { };
g_snprintf (bin_name, 19, "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;
}
int
main (int argc, char *argv[])
{
GMainLoop *loop = NULL;
/* GstElement *pipeline = NULL, *streammux = NULL, *sink = NULL, *pgie = NULL,
*nvvidconv = NULL, *nvosd = NULL, *tiler = 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;
GstPadProbeType probe_type;
GstPad *conv_sink_pad = NULL;
/* Check input arguments */
if (argc < 2) {
g_printerr ("Usage: %s <uri1> [uri2] ... [uriN] \n", argv[0]);
return -1;
}
num_sources = argc - 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 ("dstest3-pipeline");
/* Create nvstreammux instance to form batches from one or more sources. */
streammux = gst_element_factory_make ("nvstreammux", "stream-muxer");
g_object_set (G_OBJECT (streammux), "live-source", 0, NULL);
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]);
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");
/* Queue for video convert */
queue = gst_element_factory_make ("queue", "queue");
/* 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 */
#ifdef PLATFORM_TEGRA
transform = gst_element_factory_make ("nvegltransform", "nvegl-transform");
#endif
sink = gst_element_factory_make ("nveglglessink", "nvvideo-renderer");
if (!pgie || !tiler || !queue || !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
g_object_set (G_OBJECT (streammux), "width", MUXER_OUTPUT_WIDTH, "height",
MUXER_OUTPUT_HEIGHT, "batch-size", num_sources,
"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", "dstest3_pgie_config.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, tiler, queue, nvvidconv, nvosd, transform, sink,
NULL);
/* we link the elements together
* nvstreammux -> nvinfer -> nvtiler -> nvvidconv -> nvosd -> video-renderer */
if (!gst_element_link_many (streammux, pgie, tiler, queue, nvvidconv, nvosd, transform, sink,
NULL)) {
g_printerr ("Elements could not be linked. Exiting.\n");
return -1;
}
#else
gst_bin_add_many (GST_BIN (pipeline), pgie, tiler, queue, nvvidconv, nvosd, sink,
NULL);
/* we link the elements together
* nvstreammux -> nvinfer -> nvtiler -> nvvidconv -> nvosd -> video-renderer */
if (!gst_element_link_many (streammux, pgie, tiler, queue, 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 (tiler, "src");
if (!tiler_src_pad){
// conv_sink_pad = gst_element_get_static_pad (nvvidconv, "sink");
// if (!conv_sink_pad)
g_printerr ("Could not create source pad for Tiler. Exiting.\n");
return -1;
}
/* *************** START MOD *********************
*/
probe_type = (GstPadProbeType)(GST_PAD_PROBE_TYPE_BLOCK | GST_PAD_PROBE_TYPE_BUFFER);
gst_pad_add_probe (tiler_src_pad, probe_type,
tiler_src_pad_buffer_probe, (gpointer)&crop_rect_params, NULL);
gst_object_unref(tiler_src_pad);
/* **************** END MOD *********************
*/
/* 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");
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;
}