Tool/software:
Hi TI Expert,
I'm implementing Gstreamer APP in SDK 9.2.
I can set extra-controls for v4l2h264enc using command line below:
gst-launch-1.0 v4l2src device=/dev/video5 ! capssetter caps="video/x-raw,width=1280,height=800,framerate=30/1,format=NV12,colorimetry=bt601" ! v4l2h264enc extra-controls="s,video_bitrate=1000000,h264_8x8_transform_enable=true,h264_entropy_mode=true,max_number_of_reference_pics=1" ! h264parse ! rtph264pay ! udpsink host=192.168.31.171 port=5001
But how should I set the extra-controls using Gstreamer API in C?
// Method 1
/*GstCaps *encoder_caps = gst_caps_from_string("s,video_bitrate=1000000,h264_8x8_transform_enable=true,h264_entropy_mode=true,max_number_of_reference_pics=1");
g_object_set(encoder, "extra-controls", encoder_caps, NULL);
gst_caps_unref(caps);*/
// Method 2
//g_object_set(encoder, "extra-controls", "s,video_bitrate=1000000,h264_8x8_transform_enable=true,h264_entropy_mode=true,max_number_of_reference_pics=1", NULL);
//Method 3
/*GstStructure *extra_controls = gst_structure_new_empty("extra-controls");
gst_structure_set(extra_controls, "video_bitrate", G_TYPE_INT, 1000000,
"h264_8x8_transform_enable", G_TYPE_BOOLEAN, TRUE,
"h264_entropy_mode", G_TYPE_BOOLEAN, TRUE,
"max_number_of_reference_pics", G_TYPE_INT, 1, NULL);
gchar *extra_controls_str = gst_structure_to_string(extra_controls);
g_object_set(encoder, "extra-controls", extra_controls_str, NULL);
g_free(extra_controls_str);
gst_structure_free(extra_controls);*/
I've tried the 3 methods above, and all result in error:
[ 120.878054] __vm_enough_memory: pid: 1238, comm: gst_pipeline, no enough memory for the allocation [ 120.887301] __vm_enough_memory: pid: 1238, comm: gst_pipeline, no enough memory for the allocation [ 120.896359] __vm_enough_memory: pid: 1238, comm: gst_pipeline, no enough memory for the allocation (gst_pipeline:1238): GLib-ERROR **: 07:31:29.226: ../glib-2.72.3/glib/gmem.c:161: failed to allocate 28030946600 bytes [ 120.906274] audit: type=1701 audit(1717486289.223:19): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=1238 comm="gst_pipeline" exe="/home/root/gst_pipeline" sig=5 res=1 [ 120.950272] audit: type=1334 audit(1717486289.267:20): prog-id=15 op=LOAD [ 120.957484] audit: type=1334 audit(1717486289.275:21): prog-id=16 op=LOAD Trace/breakpoint trap (core dumped)
I also attach my test code for your reference
#include <gst/gst.h>
int main(int argc, char *argv[]) {
GstElement *pipeline, *source, *capssetter, *encoder, *parser, *payloader, *sink;
GstCaps *caps;
GError *error = NULL;
GstStateChangeReturn ret;
GstStructure *extra_controls;
gchar *extra_controls_str;
// Initialize GStreamer
gst_init(&argc, &argv);
// Create elements
pipeline = gst_pipeline_new("video-pipeline");
source = gst_element_factory_make("v4l2src", "source");
capssetter = gst_element_factory_make("capssetter", "capssetter");
encoder = gst_element_factory_make("v4l2h264enc", "encoder");
parser = gst_element_factory_make("h264parse", "parser");
payloader = gst_element_factory_make("rtph264pay", "payloader");
sink = gst_element_factory_make("udpsink", "sink");
if (!pipeline || !source || !capssetter || !encoder || !parser || !payloader || !sink) {
g_printerr("Not all elements could be created.\n");
return -1;
}
// Set element properties
g_object_set(source, "device", "/dev/video5", NULL);
caps = gst_caps_from_string("video/x-raw,width=1280,height=800,framerate=30/1,format=NV12,colorimetry=bt601");
g_object_set(capssetter, "caps", caps, NULL);
gst_caps_unref(caps);
// Method 1
/*GstCaps *encoder_caps = gst_caps_from_string("s,video_bitrate=1000000,h264_8x8_transform_enable=true,h264_entropy_mode=true,max_number_of_reference_pics=1");
g_object_set(encoder, "extra-controls", encoder_caps, NULL);
gst_caps_unref(caps);*/
// Method 2
//g_object_set(encoder, "extra-controls", "s,video_bitrate=1000000,h264_8x8_transform_enable=true,h264_entropy_mode=true,max_number_of_reference_pics=1", NULL);
//Method 3
/*extra_controls = gst_structure_new_empty("extra-controls");
gst_structure_set(extra_controls, "video_bitrate", G_TYPE_INT, 1000000,
"h264_8x8_transform_enable", G_TYPE_BOOLEAN, TRUE,
"h264_entropy_mode", G_TYPE_BOOLEAN, TRUE,
"max_number_of_reference_pics", G_TYPE_INT, 1, NULL);
extra_controls_str = gst_structure_to_string(extra_controls);
g_object_set(encoder, "extra-controls", extra_controls_str, NULL);
g_free(extra_controls_str);
gst_structure_free(extra_controls);*/
g_object_set(sink, "host", "192.168.31.171", "port", 5001, NULL);
// Build the pipeline
gst_bin_add_many(GST_BIN(pipeline), source, capssetter, encoder, parser, payloader, sink, NULL);
if (gst_element_link_many(source, capssetter, encoder, parser, payloader, sink, NULL) != TRUE) {
g_printerr("Elements could not be linked.\n");
gst_object_unref(pipeline);
return -1;
}
// Start playing
ret = gst_element_set_state(pipeline, GST_STATE_PLAYING);
if (ret == GST_STATE_CHANGE_FAILURE) {
g_printerr("Unable to set the pipeline to the playing state.\n");
gst_object_unref(pipeline);
return -1;
}
// Wait until error or EOS
GstBus *bus = gst_element_get_bus(pipeline);
GstMessage *msg = gst_bus_timed_pop_filtered(bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_ERROR | GST_MESSAGE_EOS);
// Parse message
if (msg != NULL) {
GError *err;
gchar *debug_info;
switch (GST_MESSAGE_TYPE(msg)) {
case GST_MESSAGE_ERROR:
gst_message_parse_error(msg, &err, &debug_info);
g_printerr("Error received from element %s: %s\n", GST_OBJECT_NAME(msg->src), err->message);
g_printerr("Debugging information: %s\n", debug_info ? debug_info : "none");
g_clear_error(&err);
g_free(debug_info);
break;
case GST_MESSAGE_EOS:
g_print("End-Of-Stream reached.\n");
break;
default:
// Should not reach here
g_printerr("Unexpected message received.\n");
break;
}
gst_message_unref(msg);
}
// Free resources
gst_object_unref(bus);
gst_element_set_state(pipeline, GST_STATE_NULL);
gst_object_unref(pipeline);
return 0;
}
Thanks,
Josh
