chansrv: add a utility function to convert wFormatTag into string

sesman/chansrv/audin.c

@@ -88,6 +88,27 @@ static struct xr_wave_format_ex **g_client_formats = NULL;
 
 static int g_current_format = 0; /* index in g_client_formats */
 
+/*****************************************************************************/
+
+/*
+ * This can be called from sound.c because it includes audin.h.
+ */
+
+const char *
+audin_wave_format_tag_to_str(int tag)
+{
+    return
+        (tag == WAVE_FORMAT_PCM)        ? "WAVE_FORMAT_PCM" :
+        (tag == WAVE_FORMAT_ADPCM)      ? "WAVE_FORMAT_ADPCM" :
+        (tag == WAVE_FORMAT_ALAW)       ? "WAVE_FORMAT_ALAW" :
+        (tag == WAVE_FORMAT_MULAW)      ? "WAVE_FORMAT_MULAW" :
+        (tag == WAVE_FORMAT_MULAW)      ? "WAVE_FORMAT_MULAW" :
+        (tag == WAVE_FORMAT_MPEGLAYER3) ? "WAVE_FORMAT_MPEGLAYER3" :
+        (tag == WAVE_FORMAT_OPUS)       ? "WAVE_FORMAT_OPUS" :
+        (tag == WAVE_FORMAT_AAC)        ? "WAVE_FORMAT_AAC" :
+        NULL;
+}
+
 /*****************************************************************************/
 static int
 cleanup_client_formats(void)

sesman/chansrv/audin.h

@@ -22,6 +22,8 @@
 #ifndef _AUDIN_H_
 #define _AUDIN_H_
 
+const char *
+audin_wave_format_tag_to_str(int tag);
 int
 audin_init(void);
 int