Simplify show_banner() so that it does not require arguments, similar

to what was previously done with show_version().
patch by Stefano Sabatini, stefano.sabatini-lala poste it

Originally committed as revision 13526 to svn://svn.ffmpeg.org/ffmpeg/trunk

cmdutils.c

@@ -196,7 +196,7 @@ void print_error(const char *filename, int err)
     }
 }
 
-void show_banner(const char *program_name, int program_birth_year)
+void show_banner(void)
 {
     fprintf(stderr, "%s version " FFMPEG_VERSION ", Copyright (c) %d-2008 Fabrice Bellard, et al.\n",
             program_name, program_birth_year);

cmdutils.h

@@ -29,6 +29,11 @@
  */
 extern const char program_name[];
 
+/**
+ * program birth year, defined by the program for show_banner()
+ */
+extern const int program_birth_year;
+
 /**
  * Parses a string and returns its corresponding value as a double.
  * Exits from the application if the string cannot be correctly
@@ -107,10 +112,8 @@ void print_error(const char *filename, int err);
  * Prints the program banner to stderr. The banner contents depend on the
  * current version of the repository and of the libav* libraries used by
  * the program.
- * @param program_name name of the program
- * @param program_birth_year year of birth of the program
  */
-void show_banner(const char *program_name, int program_birth_year);
+void show_banner(void);
 
 /**
  * Prints the version of the program to stdout. The version message

ffmpeg.c

@@ -64,7 +64,7 @@
 #undef exit
 
 const char program_name[] = "FFmpeg";
-static const int program_birth_year = 2000;
+const int program_birth_year = 2000;
 
 /* select an input stream for an output stream */
 typedef struct AVStreamMap {
@@ -3777,7 +3777,7 @@ int main(int argc, char **argv)
     avformat_opts = av_alloc_format_context();
     sws_opts = sws_getContext(16,16,0, 16,16,0, sws_flags, NULL,NULL,NULL);
 
-    show_banner(program_name, program_birth_year);
+    show_banner();
     if (argc <= 1) {
         show_help();
         av_exit(1);

ffplay.c

@@ -40,7 +40,7 @@
 #undef exit
 
 const char program_name[] = "FFplay";
-static const int program_birth_year = 2003;
+const int program_birth_year = 2003;
 
 //#define DEBUG_SYNC
 
@@ -2509,7 +2509,7 @@ int main(int argc, char **argv)
     avdevice_register_all();
     av_register_all();
 
-    show_banner(program_name, program_birth_year);
+    show_banner();
 
     parse_options(argc, argv, options, opt_input_file);
 

ffserver.c

@@ -57,7 +57,7 @@
 #undef exit
 
 const char program_name[] = "FFserver";
-static const int program_birth_year = 2000;
+const int program_birth_year = 2000;
 
 static const OptionDef options[];
 
@@ -4361,7 +4361,7 @@ int main(int argc, char **argv)
 
     av_register_all();
 
-    show_banner(program_name, program_birth_year);
+    show_banner();
 
     config_filename = "/etc/ffserver.conf";