1 files changed, 32 insertions, 0 deletions
diff --git a/src/host/layer23/include/osmocom/bb/mobile/gapk_io.h b/src/host/layer23/include/osmocom/bb/mobile/gapk_io.h
new file mode 100644
index 00000000..1b3ffa79
--- /dev/null
+++ b/src/host/layer23/include/osmocom/bb/mobile/gapk_io.h
@@ -0,0 +1,32 @@
+#pragma once
+
+#include <osmocom/gapk/procqueue.h>
+#include <osmocom/gapk/codecs.h>
+
+/* Forward declarations */
+struct osmocom_ms;
+
+struct gapk_io_state {
+	/* src/alsa -> proc/codec -> sink/tch_fb */
+	struct osmo_gapk_pq *pq_source;
+	/* src/tch_fb -> proc/codec -> sink/alsa */
+	struct osmo_gapk_pq *pq_sink;
+
+	/* Description of currently used codec / format */
+	const struct osmo_gapk_format_desc *phy_fmt_desc;
+	const struct osmo_gapk_codec_desc *codec_desc;
+
+	/* Buffer for to be played TCH frames (from DL) */
+	struct llist_head tch_fb_dl;
+	/* Buffer for encoded TCH frames (for UL) */
+	struct llist_head tch_fb_ul;
+};
+
+void gapk_io_init(void);
+int gapk_io_dequeue(struct osmocom_ms *ms);
+
+int gapk_io_init_ms_chan(struct osmocom_ms *ms,
+	uint8_t ch_type, uint8_t ch_mode);
+int gapk_io_init_ms(struct osmocom_ms *ms,
+	enum osmo_gapk_codec_type codec);
+int gapk_io_clean_up_ms(struct osmocom_ms *ms);