1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/*
* Copyright (C) 2018 Konsulko Group
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <string>
#include <iostream>
#include <cstring>
#include <gst/gst.h>
#include "surface.hpp"
#undef DEBUG
int main(int argc, char *argv[])
{
int port = 0;
std::string token;
std::string role = "receiver";
try {
port = std::stol(argv[1]);
token = argv[2];
} catch (const std::invalid_argument& e) {
std::cerr << "Invalid argument" << std::endl;
exit(1);
} catch (const std::out_of_range& e) {
std::cerr << "Port out of range" << std::endl;
exit(1);
}
// NOTES:
// (1) For reference, the pipeline used is based on the gst-launch-1.0 command in the ad hoc unit
// file in the previous hand-rolled CES demo:
//
// udpsrc port=5005 ! application/x-rtp,media=video,encoding-name=H264 ! queue ! rtph264depay ! h264parse config-interval=1 disable-passthrough=true ! decodebin ! vaapisink
//
// (2) waylandsink is a bit broken, as it needs a RGB format, but its caps include non-RGB formats
// This results in crashes when videoconvert doesn't end up in the pipeline, so care must be taken
// if it is used, e.g. for testing:
//
// videotestsrc pattern=smpte ! video/x-raw,format=BGRx,width=384,height=368 ! waylandsink
//
std::string pipeline_str = \
"udpsrc port=5005 ! application/x-rtp,media=video,encoding-name=H264 ! queue ! rtph264depay ! h264parse config-interval=1 disable-passthrough=true ! decodebin ! ";
GstPlugin *plugin = gst_registry_find_plugin(gst_registry_get (), "vaapisink");
if(plugin) {
pipeline_str += "vaapisink";
gst_object_unref(plugin);
} else {
pipeline_str += "videoconvert ! video/x-raw,format=BGRx,width=384,height=368 ! waylandsink";
}
#ifdef DEBUG
std::cout << "Using pipeline: " << pipeline_str << std::endl;
#endif
// Initialize GStreamer
#ifdef DEBUG
int gargc = 2;
char **gargv = (char**) malloc(2 * sizeof(char*));
gargv[0] = strdup(argv[0]);
gargv[1] = strdup("--gst-debug-level=2");
gst_init(&gargc, &gargv);
#else
gst_init(NULL, NULL);
#endif
// Create our IVI surface handler
SurfaceHandler handler(port, token, role);
GstElement *pipeline = gst_parse_launch(pipeline_str.c_str(), NULL);
if(!pipeline) {
std::cerr << "gstreamer pipeline construction failed!" << std::endl;
exit(1);
}
// Start pipeline
gst_element_set_state(pipeline, GST_STATE_PLAYING);
std::cout << "gstreamer pipeline running" << std::endl;
// Wait until error or EOS
GstBus *bus = gst_element_get_bus(pipeline);
GstMessage *msg = gst_bus_timed_pop_filtered(bus,
GST_CLOCK_TIME_NONE,
(GstMessageType) (GST_MESSAGE_ERROR | GST_MESSAGE_EOS));
// Free resources
if(msg != NULL)
gst_message_unref(msg);
gst_object_unref(bus);
gst_element_set_state(pipeline, GST_STATE_NULL);
gst_object_unref(pipeline);
return 0;
}
|
