Add bff-premultiply and bff-unpremultiply

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 22 insertions, 0 deletions

diff --git a/common.h b/common.h
new file mode 100644
index 0000000..ff9732c
--- /dev/null
+++ b/common.h
@@ -0,0 +1,22 @@
+/* See LICENSE file for copyright and license details. */
+#include <sys/prctl.h>
+#include <sys/wait.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "arg.h"
+
+#define USAGE(SYNOPSIS)\
+	static void usage(void)\
+	{ eprintf("usage: %s%s%s\n", argv0, *SYNOPSIS ? " " : "", SYNOPSIS); }
+
+void eprintf(const char *fmt, ...);
+
+void bff_begin(void);
+void bff_end(void);
+pid_t bff_run(const char **args, int in, int out);
+void bff_wait(pid_t pid, const char *cmd);