How to use same port for sending and receiving data ?
amar
asontakke at phonologies.com
Sun Nov 24 23:58:29 PST 2013
Hi,
I am writing pipeline in a C code using gstreamer-1.0 which send the audio
and receive audio on same port. But I am unable to do that. It is able send
the audio but receiving process not working.
Please help about this. What is going to wrong in this ? Any help/pointer
appericiated ...
My code is here :
#include <stdio.h>
#include <gst/gst.h>
#include <gio/gio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <netinet/in.h>
/* Structure to contain all our information, so we can pass it to callbacks
*/
typedef struct _CustomData {
GstElement *pipeline;
GstElement *source;
GstElement *convert;
GstElement *audio_resample;
GstElement *audio_encoder;
GstElement *audio_rtp;
GstElement *audio_sink;
GstElement *colorspace;
GstElement *video_encoder;
GstElement *video_rtp;
GstElement *video_sink;
GstElement *recvsource;
GstElement *recvdepay;
GstElement *recvsink;
} CustomData;
/* Handler for the pad-added signal */
static void pad_added_handler (GstElement *src, GstPad *pad, CustomData
*data);
int main(int argc, char *argv[]) {
CustomData data;
GstBus *bus;
GstMessage *msg;
GstStateChangeReturn ret;
gboolean terminate = FALSE;
/* Initialize GStreamer */
gst_init (&argc, &argv);
/* Create the elements */
data.source = gst_element_factory_make ("uridecodebin", "source");
data.convert = gst_element_factory_make ("audioconvert", "convert");
data.audio_resample = gst_element_factory_make ("audioresample",
"resample");
data.audio_encoder = gst_element_factory_make ("mulawenc",
"aencoder");
data.audio_rtp = gst_element_factory_make ("rtppcmupay", "artppay");
data.audio_sink = gst_element_factory_make ("udpsink",
"audio_sink");
data.colorspace = gst_element_factory_make ("autovideoconvert",
"colorspace");
data.video_encoder = gst_element_factory_make ("avenc_h263p",
"vencoder");
data.video_rtp = gst_element_factory_make ("rtph263ppay",
"video_rtp");
data.video_sink = gst_element_factory_make ("udpsink",
"video_sink");
data.recvsource = gst_element_factory_make ("udpsrc", "recvsrc");;
data.recvdepay = gst_element_factory_make ("rtppcmudepay",
"artdepay");;
data.recvsink = gst_element_factory_make ("filesink", "recvsink");;
/* Create the empty pipeline */
data.pipeline = gst_pipeline_new ("test-pipeline");
if (!data.pipeline || !data.source || !data.convert ||
!data.audio_sink || !data.colorspace || !data.video_sink) {
g_printerr ("Not all elements could be created.\n");
return -1;
}
/* Build the pipeline. Note that we are NOT linking the source at
this
* point. We will do it later. */
gst_bin_add_many (GST_BIN (data.pipeline), data.source,
data.convert ,data.audio_resample,data.audio_encoder,data.audio_rtp,
data.audio_sink, data.colorspace,data.video_encoder,data.video_rtp,
data.video_sink, NULL);
if (!(gst_element_link_many (data.convert,
data.audio_resample,data.audio_encoder,data.audio_rtp,data.audio_sink,NULL)
)) {
g_printerr ("audio Elements could not be linked.\n");
gst_object_unref (data.pipeline);
return -1;
}
if (!( gst_element_link_many
(data.colorspace,data.video_encoder,data.video_rtp, data.video_sink,NULL)))
{
g_printerr ("video Elements could not be linked.\n");
gst_object_unref (data.pipeline);
return -1;
}
if (!( gst_element_link_many
(data.recvsource,data.recvdepay,data.recvsink,NULL))) {
g_printerr ("video Elements could not be linked.\n");
gst_object_unref (data.pipeline);
return -1;
}
struct sockaddr_in artp_addr;
memset(&artp_addr, 0, sizeof(struct sockaddr_in));
int artp_sockfd = socket (AF_INET, SOCK_DGRAM, 0);
char on =1;
setsockopt(artp_sockfd, NULL, SO_REUSEADDR, (const char *) &on,
sizeof(on));
perror("setsockopt");
if (artp_sockfd > 0) {
int res;
artp_addr.sin_family = AF_INET;
artp_addr.sin_port = htons(7878);
artp_addr.sin_addr.s_addr = inet_addr("192.168.0.227");;
res = bind(artp_sockfd, (struct
sockaddr*)&artp_addr,sizeof(artp_addr));
if (res == 0) {
printf("Succesfully bound to audio local RTP
port : 7878 \t sockfd : %d.\n",artp_sockfd);
} else {
printf("Unable to bind to local audio RTP port
7878.");
}
}
/* Set the URI to play */
g_object_set (data.source, "uri",
"file:///home/amar/KRSNA.mpg", NULL);
GstCaps *caps;
caps
=gst_caps_from_string("application/x-rtp,media=(string)audio,encoding-name=PCMU,payload=0,clock-rate=8000");
g_object_set (data.audio_sink, "port", 3333 , NULL);
g_object_set (data.audio_sink, "host", "127.0.0.1" , NULL);
GSocket * s = g_socket_new_from_fd(artp_sockfd, NULL);
g_object_set (data.audio_sink, "socket", s , NULL);
g_object_set (data.video_sink, "port", 9078 , NULL);
g_object_set (data.video_sink, "host", "127.0.0.1" , NULL);
g_object_set (data.recvsource, "caps", caps, NULL);
g_object_set (data.recvsource, "socket", s , NULL);
g_object_set (data.recvsink, "location", "new.wav", NULL);
GstPad *srcpad, *sinkpad;
GstPadLinkReturn lres;
g_signal_connect (data.source, "pad-added", G_CALLBACK
(pad_added_handler), &data);
/* Start playing */
ret = gst_element_set_state (data.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 (data.pipeline);
return -1;
}
/* Listen to the bus */
bus = gst_element_get_bus (data.pipeline);
do {
msg = gst_bus_timed_pop_filtered (bus,
GST_CLOCK_TIME_NONE, GST_MESSAGE_STATE_CHANGED | 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);
terminate = TRUE;
break;
case GST_MESSAGE_EOS:
g_print ("End-Of-Stream
reached.\n");
terminate = TRUE;
break;
case GST_MESSAGE_STATE_CHANGED:
/* We are only interested in
state-changed messages from the pipeline */
if (GST_MESSAGE_SRC (msg) ==
GST_OBJECT (data.pipeline)) {
GstState old_state,
new_state, pending_state;
gst_message_parse_state_changed (msg, &old_state, &new_state,
&pending_state);
g_print ("Pipeline
state changed from %s to %s:\n",
gst_element_state_get_name (old_state), gst_element_state_get_name
(new_state));
}
break;
default:
/* We should not reach here */
g_printerr ("Unexpected message
received.\n");
break;
}
gst_message_unref (msg);
}
} while (!terminate);
/* Free resources */
gst_object_unref (bus);
gst_element_set_state (data.pipeline, GST_STATE_NULL);
gst_object_unref (data.pipeline);
return 0;
}
/* This function will be called by the pad-added signal */
static void pad_added_handler (GstElement *src, GstPad *new_pad, CustomData
*data) {
GstPad *sink_pad_audio = gst_element_get_static_pad (data->convert,
"sink");
GstPad *sink_pad_video = gst_element_get_static_pad
(data->colorspace, "sink");
GstPadLinkReturn ret;
GstCaps *new_pad_caps = NULL;
GstStructure *new_pad_struct = NULL;
const gchar *new_pad_type = NULL;
g_print ("Received new pad '%s' from '%s':\n", GST_PAD_NAME
(new_pad), GST_ELEMENT_NAME (src));
/* Check the new pad's type */
new_pad_caps = gst_pad_query_caps (new_pad,NULL);
new_pad_struct = gst_caps_get_structure (new_pad_caps, 0);
new_pad_type = gst_structure_get_name (new_pad_struct);
if (!g_str_has_prefix (new_pad_type, "audio/x-raw")) {
g_print (" It has type '%s' which is raw video.
Connecting.\n", new_pad_type);
/* Attempt the link */
ret = gst_pad_link (new_pad, sink_pad_video);
if (GST_PAD_LINK_FAILED (ret)) {
g_print (" Type is '%s' but link failed.\n",
new_pad_type);
} else {
g_print (" Link succeeded (type '%s').\n",
new_pad_type);
}
goto exit;
}
/* Attempt the link */
ret = gst_pad_link (new_pad, sink_pad_audio);
if (GST_PAD_LINK_FAILED (ret)) {
g_print (" Type is '%s' but link failed.\n", new_pad_type);
} else {
g_print (" Link succeeded (type '%s').\n", new_pad_type);
}
exit:
/* Unreference the new pad's caps, if we got them */
if (new_pad_caps != NULL)
gst_caps_unref (new_pad_caps);
/* Unreference the sink pad */
gst_object_unref (sink_pad_audio);
gst_object_unref (sink_pad_video);
}
Thanks,
Amar
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