Busybox-like ff{mpeg,probe,server,play} multitool

Makefile changes are not implemented

ffmpeg.c

@@ -106,8 +106,8 @@
 
 #include "libavutil/avassert.h"
 
-const char program_name[] = "ffmpeg";
-const int program_birth_year = 2000;
+// const char program_name[] = "ffmpeg";
+// const int program_birth_year = 2000;
 
 static FILE *vstats_file;
 
@@ -4274,7 +4274,8 @@ static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
 {
 }
 
-int main(int argc, char **argv)
+int main_ffmpeg(int argc, char **argv);
+int main_ffmpeg(int argc, char **argv)
 {
     int ret;
     int64_t ti;

ffmpeg_opt.c

@@ -2894,7 +2894,8 @@ static int opt_filter_complex_script(void *optctx, const char *opt, const char *
     return 0;
 }
 
-void show_help_default(const char *opt, const char *arg)
+void show_help_default_ffmpeg(const char *opt, const char *arg);
+void show_help_default_ffmpeg(const char *opt, const char *arg)
 {
     /* per-file options have at least one of those set */
     const int per_file = OPT_SPEC | OPT_OFFSET | OPT_PERFILE;

ffmulti.c

@@ -0,0 +1,65 @@
+#include <string.h>
+
+#include "config.h"
+
+const char program_name[] = "ffmulti";
+const int program_birth_year = 2016;
+
+int main_ffmpeg(int argc, char **argv);
+int main_ffprobe(int argc, char **argv);
+int main_ffserver(int argc, char **argv);
+int main_ffplay(int argc, char **argv);
+
+void show_help_default_ffmpeg(const char *opt, const char *arg);
+void show_help_default_ffserver(const char *opt, const char *arg);
+void show_help_default_ffprobe(const char *opt, const char *arg);
+void show_help_default_ffplay(const char *opt, const char *arg);
+void show_help_default(const char *opt, const char *arg);
+
+static char tool = '\0';
+
+void show_help_default(const char *opt, const char *arg)
+{
+	switch(tool) {
+#if CONFIG_FFMPEG == 1
+		case 'm': show_help_default_ffmpeg  (opt, arg); break;
+#endif
+#if CONFIG_FFSERVER == 1
+		case 's': show_help_default_ffserver(opt, arg); break;
+#endif
+#if CONFIG_FFPROBE == 1
+		case 'r': show_help_default_ffprobe (opt, arg); break;
+#endif
+#if CONFIG_FFPLAY == 1
+		case 'l': show_help_default_ffplay  (opt, arg); break;
+#endif
+	}
+}
+
+int main(int argc, char **argv) {
+	if (argc == 0 || !argv|| !argv[0]) return 127;
+	if (0) {
+#if CONFIG_FFMPEG == 1
+	} else if (strstr(argv[0], "ffmpeg")) {
+		tool='m';
+		return main_ffmpeg(argc, argv);
+#endif
+#if CONFIG_FFPLAY == 1
+	} else if (strstr(argv[0], "ffplay")) {
+		tool='l';
+		return main_ffplay(argc, argv);
+#endif
+#if CONFIG_FFPROBE == 1
+	} else if (strstr(argv[0], "ffprobe")) {
+		tool='r';
+		return main_ffprobe(argc, argv);
+#endif
+#if CONFIG_FFSERVER == 1
+	} else if (strstr(argv[0], "ffserver")) {
+		tool='s';
+		return main_ffserver(argc, argv);
+#endif
+	} else {
+		return main(argc-1, argv+1);
+	}
+}

ffplay.c

@@ -60,8 +60,8 @@
 
 #include <assert.h>
 
-const char program_name[] = "ffplay";
-const int program_birth_year = 2003;
+// const char program_name[] = "ffplay";
+// const int program_birth_year = 2003;
 
 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
 #define MIN_FRAMES 25
@@ -3708,7 +3708,8 @@ static void show_usage(void)
     av_log(NULL, AV_LOG_INFO, "\n");
 }
 
-void show_help_default(const char *opt, const char *arg)
+void show_help_default_ffplay(const char *opt, const char *arg);
+void show_help_default_ffplay(const char *opt, const char *arg)
 {
     av_log_set_callback(log_callback_help);
     show_usage();
@@ -3765,7 +3766,8 @@ static int lockmgr(void **mtx, enum AVLockOp op)
 }
 
 /* Called from the main */
-int main(int argc, char **argv)
+int main_ffplay(int argc, char **argv);
+int main_ffplay(int argc, char **argv)
 {
     int flags;
     VideoState *is;

ffprobe.c

@@ -49,8 +49,8 @@
 #include "libpostproc/postprocess.h"
 #include "cmdutils.h"
 
-const char program_name[] = "ffprobe";
-const int program_birth_year = 2007;
+// const char program_name[] = "ffprobe";
+// const int program_birth_year = 2007;
 
 static int do_bitexact = 0;
 static int do_count_frames = 0;
@@ -2897,7 +2897,8 @@ static int opt_input_file_i(void *optctx, const char *opt, const char *arg)
     return 0;
 }
 
-void show_help_default(const char *opt, const char *arg)
+void show_help_default_ffprobe(const char *opt, const char *arg);
+void show_help_default_ffprobe(const char *opt, const char *arg)
 {
     av_log_set_callback(log_callback_help);
     show_usage();
@@ -3170,7 +3171,8 @@ static inline int check_section_show_entries(int section_id)
             do_show_##varname = 1;                                      \
     } while (0)
 
-int main(int argc, char **argv)
+int main_ffprobe(int argc, char **argv);
+int main_ffprobe(int argc, char **argv)
 {
     const Writer *w;
     WriterContext *wctx;

ffserver.c

@@ -73,8 +73,8 @@
 
 #define PATH_LENGTH 1024
 
-const char program_name[] = "ffserver";
-const int program_birth_year = 2000;
+// const char program_name[] = "ffserver";
+// const int program_birth_year = 2000;
 
 static const OptionDef options[];
 
@@ -3951,7 +3951,8 @@ static void opt_debug(void)
     snprintf(config.logfilename, sizeof(config.logfilename), "-");
 }
 
-void show_help_default(const char *opt, const char *arg)
+void show_help_default_ffserver(const char *opt, const char *arg);
+void show_help_default_ffserver(const char *opt, const char *arg)
 {
     printf("usage: ffserver [options]\n"
            "Hyper fast multi format Audio/Video streaming server\n");
@@ -3967,7 +3968,8 @@ static const OptionDef options[] = {
     { NULL },
 };
 
-int main(int argc, char **argv)
+int main_ffserver(int argc, char **argv);
+int main_ffserver(int argc, char **argv)
 {
     struct sigaction sigact = { { 0 } };
     int cfg_parsed;