1 files changed, 40 insertions, 0 deletions
diff --git a/include/osmocom/coding/gsm0503_amr_dtx.h b/include/osmocom/coding/gsm0503_amr_dtx.h
new file mode 100644
index 00000000..f048a6e3
--- /dev/null
+++ b/include/osmocom/coding/gsm0503_amr_dtx.h
@@ -0,0 +1,40 @@
+/*! \file gsm0503_amr_dtx.h
+ *  GSM TS 05.03 coding
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#include <osmocom/core/defs.h>
+#include <osmocom/core/bits.h>
+
+/*! \addtogroup coding
+ *  @{
+ * \file gsm0503_amr_dtx.h */
+
+enum gsm0503_amr_dtx_frames {
+	AMR_OTHER,
+	AFS_SID_FIRST,
+	AFS_SID_UPDATE,
+	AFS_SID_UPDATE_CN,
+	AFS_ONSET,
+	AHS_SID_UPDATE,
+	AHS_SID_UPDATE_CN,
+	AHS_SID_FIRST_P1,
+	AHS_SID_FIRST_P2,
+	AHS_ONSET,
+	AHS_SID_FIRST_INH,
+	AHS_SID_UPDATE_INH,
+};
+
+extern const struct value_string gsm0503_amr_dtx_frame_names[];
+static inline const char *gsm0503_amr_dtx_frame_name(enum gsm0503_amr_dtx_frames frame)
+{
+	return get_value_string(gsm0503_amr_dtx_frame_names, frame);
+}
+
+enum gsm0503_amr_dtx_frames gsm0503_detect_afs_dtx_frame(int *n_errors, int *n_bits_total, const ubit_t *ubits);
+enum gsm0503_amr_dtx_frames gsm0503_detect_ahs_dtx_frame(int *n_errors, int *n_bits_total, const ubit_t *ubits);
+
+/*! @} */