Change mistaken gchar * variables to gboolean type.
gchar *opt_input_format = NULL;
gchar *opt_output_format = NULL;
gchar *opt_transform_module = NULL;
-gchar *opt_show = NULL;
+gboolean opt_show = FALSE;
gchar *opt_time = NULL;
gchar *opt_samples = NULL;
gchar *opt_frames = NULL;
-gchar *opt_continuous = NULL;
+gboolean opt_continuous = FALSE;
gchar *opt_get = NULL;
-gchar *opt_set = NULL;
+gboolean opt_set = FALSE;
/*
* Defines a callback function that generates an error if an
extern gchar *opt_input_format;
extern gchar *opt_output_format;
extern gchar *opt_transform_module;
-extern gchar *opt_show;
+extern gboolean opt_show;
extern gchar *opt_time;
extern gchar *opt_samples;
extern gchar *opt_frames;
-extern gchar *opt_continuous;
+extern gboolean opt_continuous;
extern gchar *opt_get;
-extern gchar *opt_set;
+extern gboolean opt_set;
int parse_options(int argc, char **argv);
void show_help(void);