From b2dfa830529f5e1f095c2088060b9b3b916ea32f Mon Sep 17 00:00:00 2001
From: Wim Taymans <wtaymans@redhat.com>
Date: Thu, 6 Feb 2020 16:50:59 +0100
Subject: [PATCH] pw-cat: print channelmap in verbose mode

---
 src/tools/pw-cat.c | 26 ++++++++++++++++++++++----
 1 file changed, 22 insertions(+), 4 deletions(-)

diff --git a/src/tools/pw-cat.c b/src/tools/pw-cat.c
index 24855feca..610c03dc9 100644
--- a/src/tools/pw-cat.c
+++ b/src/tools/pw-cat.c
@@ -42,6 +42,7 @@
 #include <spa/param/audio/type-info.h>
 #include <spa/param/props.h>
 #include <spa/utils/result.h>
+#include <spa/debug/types.h>
 
 #include <pipewire/pipewire.h>
 #include <pipewire/global.h>
@@ -539,6 +540,18 @@ static int channelmap_default(struct channelmap *map, int n_channels)
 	return 0;
 }
 
+static void channelmap_print(struct channelmap *map)
+{
+	int i;
+
+	for (i = 0; i < map->n_channels; i++) {
+		const char *name = spa_debug_type_find_name(spa_type_audio_channel, map->channels[i]);
+		if (name == NULL)
+			name = ":UNK";
+		printf("%s%s", rindex(name, ':')+1, i + 1 < map->n_channels ? "," : "");
+	}
+}
+
 static void
 target_destroy(struct target *target)
 {
@@ -1130,6 +1143,8 @@ int main(int argc, char *argv[])
 			data.channels = data.info.channels;
 
 			if (data.channelmap.n_channels == 0) {
+				bool def = false;
+
 				if (sf_command(data.file, SFC_GET_CHANNEL_MAP_INFO,
 						data.channelmap.channels,
 						sizeof(data.channelmap.channels[0]) * data.channels)) {
@@ -1137,11 +1152,14 @@ int main(int argc, char *argv[])
 					if (channelmap_from_sf(&data.channelmap) < 0)
 						data.channelmap.n_channels = 0;
 				}
-				if (data.channelmap.n_channels > 0) {
-					printf("got channel map\n");
-				} else {
-					printf("no channel map, assuming default\n");
+				if (data.channelmap.n_channels == 0) {
 					channelmap_default(&data.channelmap, data.channels);
+					def = true;
+				}
+				if (data.verbose) {
+					printf("using %s channel map: ", def ? "default" : "file");
+					channelmap_print(&data.channelmap);
+					printf("\n");
 				}
 			}
 		}