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Patched source to stream via srt

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This commit is contained in:
Johannes Randerath 2025-10-20 01:00:05 +02:00
parent 9ffaa8b582
commit bcedc3719d
1 changed files with 56 additions and 10 deletions
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66
stream_source.c
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@ -23,6 +23,7 @@
#include "gst/gstbin.h"
#include "gst/gstbus.h"
#include "gst/gstcaps.h"
#include "gst/gstclock.h"
#include "gst/gstelement.h"
#include "gst/gstelementfactory.h"
@ -30,6 +31,7 @@
#include "gst/gstobject.h"
#include "gst/gstpipeline.h"
#include "gst/gstutils.h"
#include "gst/gstvalue.h"
#include <gst/gst.h>
#include <ini.h>
#include <stdio.h>
@ -55,6 +57,7 @@ typedef struct _ConfigData {
GUri *url; ///< URL of the server to stream to. Must be a valid URI.
GUri *device; ///< Device file. Must be an absolute path.
GUri *ssh_key; ///< Path to SSH Key used to authenticate with the server.
GString *passphrase; ///< Passphrase used to encrypt srt traffic with
} ConfigData;
/**
@ -80,9 +83,12 @@ static int config_callback(void *user, const char *section, const char *name, co
}
}
if (CONF_KEY("remote", "url")) {
GUri *uri = g_uri_parse(value, G_URI_FLAGS_NONE, NULL);
if (uri) {
conf->url = uri;
char *extended_value = calloc(strlen(value) + strlen("https://") + 1, sizeof(char));
sprintf(extended_value, "https://%s", value);
GUri *url = g_uri_parse(extended_value, G_URI_FLAGS_NONE, NULL);
free(extended_value);
if (url) {
conf->url = url;
return 0;
}
}
@ -96,19 +102,26 @@ static int config_callback(void *user, const char *section, const char *name, co
return 0;
}
}
if (CONF_KEY("remote", "passphrase")) {
conf->passphrase = g_string_new(value);
}
return -1;
}
int main(int argc, char *argv[]) {
GstBus *bus;
GstMessage *msg;
GstElement *video_queue;
GstElement *video_capsfilter;
GstElement *video_convert;
GstElement *video_sink;
GstElement *video_encode;
GstElement *video_parse;
GstElement *mux;
GstElement *srt_sink;
CustomData data;
GstStateChangeReturn ret;
gboolean terminate = FALSE;
ConfigData conf;
GString *srt_uri;
// Read configuration data from ini file and write to conf. config_callback is called for each value.
ini_parse("../config.ini", config_callback, &conf);
@ -116,21 +129,54 @@ int main(int argc, char *argv[]) {
// Initialize Gstreamer and set up the pipeline along with its elements.
gst_init(&argc, &argv);
data.source = gst_element_factory_make("v4l2src", "source");
video_queue = gst_element_factory_make("queue", "video_queue");
video_capsfilter = gst_element_factory_make("capsfilter", "video_capsfilter");
video_convert = gst_element_factory_make("videoconvert", "video_convert");
video_sink = gst_element_factory_make("autovideosink", "video_sink");
video_encode = gst_element_factory_make("x264enc", "video_encode");
video_parse = gst_element_factory_make("h264parse", "video_parse");
mux = gst_element_factory_make("matroskamux", "mux");
srt_sink = gst_element_factory_make("srtsink", "srt_sink");
data.pipeline = gst_pipeline_new("media-pipeline");
if (!data.source || !video_queue || !video_convert || !video_sink || !data.pipeline) {
if (!data.source || !video_capsfilter || !video_convert || !video_encode || !video_parse || !mux || !srt_sink || !data.pipeline) {
g_printerr("Couldn't create all elements.\n");
if (!data.source) g_printerr("Couldn't create source.\n");
if (!video_capsfilter) g_printerr("Couldn't create capsfilter.\n");
if (!video_convert) g_printerr("Couldn't create convert.\n");
if (!video_encode) g_printerr("Couldn't create encode.\n");
if (!video_parse) g_printerr("Couldn't create parse.\n");
if (!mux) g_printerr("Couldn't create mux.\n");
if (!srt_sink) g_printerr("Couldn't create sink.\n");
if (!data.pipeline) g_printerr("Couldn't create pipeline.\n");
return -1;
}
// Use the device file specified by configuration as video input source.
g_object_set(data.source, "device", g_uri_to_string(conf.device) + strlen("file://"), NULL);
// Set video framerate to 30/1 on video/x-raw
GstCaps *video_caps = gst_caps_new_simple("video/x-raw", "framerate", GST_TYPE_FRACTION, 30, 1, NULL);
g_object_set(video_capsfilter, "caps", video_caps, NULL);
gst_caps_unref(video_caps);
g_object_set(video_encode, "tune", "zerolatency", NULL);
g_object_set(video_encode, "speed-preset", "veryfast", NULL);
g_object_set(video_encode, "bitrate", 2500, NULL);
g_object_set(video_encode, "key-int-max", 60, NULL);
g_object_set(video_encode, "aud", TRUE, NULL);
g_object_set(video_parse, "config-interval", -1, NULL);
g_object_set(mux, "streamable", TRUE, NULL);
srt_uri = g_string_new("");
g_string_printf(srt_uri, "srt://%s?mode=caller&pbkeylen=32&passphrase=%s&latency=150", g_uri_to_string(conf.url) + strlen("https://"), conf.passphrase->str);
g_print("%s\n", srt_uri->str);
g_object_set(srt_sink, "uri", srt_uri->str, NULL);
g_object_set(mux, "streamable", TRUE, NULL);
// Add all elements to the pipeline and link them together.
gst_bin_add_many(GST_BIN(data.pipeline), data.source, video_queue, video_convert, video_sink, NULL);
if (!gst_element_link_many(data.source, video_queue, video_convert, video_sink, NULL)) {
gst_bin_add_many(GST_BIN(data.pipeline), data.source, video_capsfilter, video_convert, video_encode, video_parse, mux, srt_sink, NULL);
if (!gst_element_link_many(data.source, video_capsfilter, video_convert, video_encode, video_parse, mux, srt_sink, NULL)) {
g_printerr("Couldn't link stream elements.\n");
gst_object_unref(data.pipeline);
return -1;