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
107
108
|
#include <gst/gst.h>
#include <glib.h>
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_ERROR:{
gchar *debug;
GError *error;
gst_message_parse_error(msg, &error, &debug);
g_free(debug);
g_printerr("Error: %s\n", error->message);
g_error_free(error);
g_main_loop_quit(loop);
break;
}
default:
break;
}
const GstStructure *st = gst_message_get_structure(msg);
if (st && strcmp(gst_structure_get_name(st), "pocketsphinx") == 0) {
if (g_value_get_boolean(gst_structure_get_value(st, "final")))
g_print("Got result %s\n", g_value_get_string(gst_structure_get_value(st, "hypothesis")));
}
return TRUE;
}
int
main(int argc, char *argv[])
{
GMainLoop *loop;
GstElement *pipeline, *source, *decoder, *sink;
GstBus *bus;
guint bus_watch_id;
/* Initialisation */
gst_init(&argc, &argv);
loop = g_main_loop_new(NULL, FALSE);
/* Check input arguments */
if (argc != 2) {
g_printerr("Usage: %s <file.raw>\n", argv[0]);
return -1;
}
/* Create gstreamer elements */
pipeline = gst_pipeline_new("pipeline");
source = gst_element_factory_make("filesrc", "file-source");
decoder = gst_element_factory_make("pocketsphinx", "asr");
sink = gst_element_factory_make("fakesink", "output");
if (!pipeline || !source || !decoder || !sink) {
g_printerr("One element could not be created. Exiting.\n");
return -1;
}
/* Set up the pipeline */
/* we set the input filename to the source element */
g_object_set(G_OBJECT(source), "location", argv[1], NULL);
g_object_set(G_OBJECT(decoder), "lmctl", "test.lmctl", NULL);
g_object_set(G_OBJECT(decoder), "lmname", "tidigits", 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);
/* we add all elements into the pipeline */
gst_bin_add_many(GST_BIN(pipeline), source, decoder, sink, NULL);
/* we link the elements together */
gst_element_link_many(source, decoder, sink, NULL);
gst_element_set_state(pipeline, GST_STATE_PLAYING);
/* Iterate */
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;
}
|
