1 files changed, 58 insertions, 0 deletions
diff --git a/include/osmocom/msc/codec_sdp_cc_t9n.h b/include/osmocom/msc/codec_sdp_cc_t9n.h
new file mode 100644
index 000000000..b082f159e
--- /dev/null
+++ b/include/osmocom/msc/codec_sdp_cc_t9n.h
@@ -0,0 +1,58 @@
+/* Routines for translation ("t9n") between SDP codec names and CC/BSSMAP codec constants */
+#pragma once
+
+#include <osmocom/gsm/protocol/gsm_04_08.h>
+#include <osmocom/gsm/protocol/gsm_08_08.h>
+#include <osmocom/mgcp_client/mgcp_client.h>
+#include <osmocom/msc/sdp_msg.h>
+#include <osmocom/gsm/mncc.h>
+
+#define NO_MGCP_CODEC 0xffffffff
+
+extern const struct gsm_mncc_bearer_cap bearer_cap_empty;
+
+enum codec_frhr {
+	CODEC_FRHR_NONE = 0,
+	CODEC_FRHR_FR,
+	CODEC_FRHR_HR,
+};
+
+struct codec_mapping {
+	struct sdp_audio_codec sdp;
+	enum mgcp_codecs mgcp;
+	unsigned int speech_ver_count;
+	enum gsm48_bcap_speech_ver speech_ver[8];
+	uint32_t mncc_payload_msg_type;
+	/* gsm0808_speech_codec_type corresponds to gsm0808_speech_codec[_list]->type */
+	bool has_gsm0808_speech_codec_type;
+	enum gsm0808_speech_codec_type gsm0808_speech_codec_type;
+	enum gsm0808_permitted_speech perm_speech;
+	enum codec_frhr frhr;
+};
+
+extern const struct codec_mapping codec_map[];
+#define foreach_codec_mapping(CODEC_MAPPING) \
+	for ((CODEC_MAPPING) = codec_map; (CODEC_MAPPING) < codec_map + ARRAY_SIZE(codec_map); (CODEC_MAPPING)++)
+
+const struct codec_mapping *codec_mapping_by_speech_ver(enum gsm48_bcap_speech_ver speech_ver);
+const struct codec_mapping *codec_mapping_by_gsm0808_speech_codec_type(enum gsm0808_speech_codec_type sct,
+								       uint16_t cfg);
+const struct codec_mapping *codec_mapping_by_perm_speech(enum gsm0808_permitted_speech perm_speech);
+const struct codec_mapping *codec_mapping_by_subtype_name(const char *subtype_name);
+const struct codec_mapping *codec_mapping_by_mgcp_codec(enum mgcp_codecs mgcp);
+
+int bearer_cap_add_speech_ver(struct gsm_mncc_bearer_cap *bearer_cap, enum gsm48_bcap_speech_ver speech_ver);
+int sdp_audio_codec_add_to_bearer_cap(struct gsm_mncc_bearer_cap *bearer_cap, const struct sdp_audio_codec *codec);
+int sdp_audio_codecs_to_bearer_cap(struct gsm_mncc_bearer_cap *bearer_cap, const struct sdp_audio_codecs *ac);
+int bearer_cap_set_radio(struct gsm_mncc_bearer_cap *bearer_cap);
+
+struct sdp_audio_codec *sdp_audio_codecs_add_speech_ver(struct sdp_audio_codecs *ac,
+							enum gsm48_bcap_speech_ver speech_ver);
+struct sdp_audio_codec *sdp_audio_codecs_add_mgcp_codec(struct sdp_audio_codecs *ac, enum mgcp_codecs mgcp_codec);
+void sdp_audio_codecs_from_bearer_cap(struct sdp_audio_codecs *ac, const struct gsm_mncc_bearer_cap *bc);
+
+void sdp_audio_codecs_from_speech_codec_list(struct sdp_audio_codecs *ac, const struct gsm0808_speech_codec_list *cl);
+
+int sdp_audio_codecs_to_gsm0808_channel_type(struct gsm0808_channel_type *ct, const struct sdp_audio_codecs *ac);
+
+enum mgcp_codecs sdp_audio_codec_to_mgcp_codec(const struct sdp_audio_codec *codec);