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examples: playout: Add better help text

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This should help people figure out how to use the example a bit better
This commit is contained in:
Nirbheek Chauhan 2015-06-13 01:40:00 +05:30 committed by Tim-Philipp Müller
parent 4d42704312
commit f8137dd8a6
1 changed files with 12 additions and 8 deletions
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20
tests/examples/playout.c
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@ -1044,15 +1044,18 @@ main (int argc, char **argv)
gchar **f, **filenames = NULL; gchar **f, **filenames = NULL;
GOptionEntry options[] = { GOptionEntry options[] = {
{"switch-after", 's', 0, G_OPTION_ARG_INT, &switch_after_ms, "Time after " {"switch-after", 's', 0, G_OPTION_ARG_INT, &switch_after_ms, "Time after "
"which the next item will be forcibly activated", "MILLISECONDS"}, "which the next file will be forcibly activated", "MILLISECONDS"},
{G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &filenames, NULL}, {G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &filenames, NULL,
"FILENAME1 [FILENAME2] [FILENAME3] ..."},
{NULL} {NULL}
}; };
GOptionContext *ctx; GOptionContext *ctx;
PlayoutApp *app; PlayoutApp *app;
GError *err = NULL; GError *err = NULL;
ctx = g_option_context_new ("FILENAME1 [FILENAME2] [FILENAME3] ..."); ctx = g_option_context_new (NULL);
g_option_context_set_summary (ctx, "An example application to sequentially "
"and seamlessly play a list of audio-video or video-only files.");
g_option_context_add_main_entries (ctx, options, NULL); g_option_context_add_main_entries (ctx, options, NULL);
g_option_context_add_group (ctx, gst_init_get_option_group ()); g_option_context_add_group (ctx, gst_init_get_option_group ());
@ -1063,17 +1066,18 @@ main (int argc, char **argv)
g_printerr ("Error initializing: Unknown error!\n"); g_printerr ("Error initializing: Unknown error!\n");
return 1; return 1;
} }
if (filenames == NULL || *filenames == NULL) {
g_printerr ("%s", g_option_context_get_help (ctx, TRUE, NULL));
return 1;
}
g_option_context_free (ctx); g_option_context_free (ctx);
GST_DEBUG_CATEGORY_INIT (playout, "playout", 0, "Playout example app"); GST_DEBUG_CATEGORY_INIT (playout, "playout", 0, "Playout example app");
app = playout_app_new (); app = playout_app_new ();
if (filenames == NULL || *filenames == NULL) {
g_printerr ("Usage: %s FILENAME1 FILENAME2\n", argv[0]);
return 1;
}
for (f = filenames; f != NULL && *f != NULL; ++f) for (f = filenames; f != NULL && *f != NULL; ++f)
playout_app_add_item (app, *f); playout_app_add_item (app, *f);