native LIRC support for ncmpc

The attachment includes the patch and a sample .lircrc config for
testing purposes (i. e. only a few commands are mapped to IR events).
The config is rather simple to write: For each button add a block like
this to ~/.lircrc:

begin
     button = <button name from /etc/lircd.conf>
     prog = ncmpc
     config = <command name from src/command.c>
end

The patch is not finished, there are several problems that still need to
be solved:

1. the configure.ac modifications are just for testing purposes and
should be made optional with a parameter like --enable-lirc
for ./configure. Unfortunately I'm not an expert on autoconfig tools.

2. LIRC example code [1] suggests looping over lirc_code2char, probably
to have multiple actions that can be triggered from one button. Perhaps
lirc_event(...) should be moved to lirc.c and be heavily modified, no
longer being a mere copy of keyboard_event(...).

1 files changed, 41 insertions, 0 deletions

diff --git a/src/lirc.c b/src/lirc.c
new file mode 100644
index 000000000..0ad34ca2f
--- /dev/null
+++ b/src/lirc.c
@@ -0,0 +1,41 @@
+#include <lirc/lirc_client.h>
+#include "lirc.h"
+
+static struct lirc_config *lc = NULL;
+static int lirc_socket = 0;
+
+int ncmpc_lirc_open()
+{
+	if ((lirc_socket = lirc_init("ncmpc", 0)) == -1)
+		return -1;
+
+	if (lirc_readconfig(NULL, &lc, NULL)) {
+		lirc_deinit();
+		return -1;
+	}
+
+	return lirc_socket;
+}
+
+void ncmpc_lirc_close()
+{
+	if (lc)
+		lirc_freeconfig(lc);
+	lirc_deinit();
+}
+
+command_t ncmpc_lirc_get_command()
+{
+	char *code = NULL, *cmd = NULL;
+
+	if (lirc_nextcode(&code) != 0)
+		return CMD_NONE;
+
+	if (lirc_code2char(lc, code, &cmd) != 0)
+		return CMD_NONE;
+
+	if (!cmd)
+		return CMD_NONE;
+
+	return get_key_command_from_name(cmd);
+}