+/**
+ * The sample formats supported by paraslash.
+ *
+ * It may be determined by one of the following sources:
+ *
+ * 1. The decoding filter (para_audiod only). In this case, it is always
+ * \t SF_S16_LE which is the canonical format used within decoders.
+ *
+ * 2. The wav header (para_write only).
+ *
+ * 3. The --format option of para_write.
+ */
+#define SAMPLE_FORMATS \
+ SAMPLE_FORMAT(SF_S8, "8 bit signed"), \
+ SAMPLE_FORMAT(SF_U8, "8 bit unsigned"), \
+ SAMPLE_FORMAT(SF_S16_LE, "16 bit signed, little endian"), \
+ SAMPLE_FORMAT(SF_S16_BE, "16 bit signed, big endian"), \
+ SAMPLE_FORMAT(SF_U16_LE, "16 bit unsigned, little endian"), \
+ SAMPLE_FORMAT(SF_U16_BE, "16 bit unsigned, big endian"), \
+
+#define SAMPLE_FORMAT(a, b) a
+enum sample_format {SAMPLE_FORMATS};
+#undef SAMPLE_FORMAT
+#define SAMPLE_FORMAT(a, b) b