1 files changed, 111 insertions, 0 deletions
diff --git a/src/rtfwk/sampbuf.h b/src/rtfwk/sampbuf.h
new file mode 100644
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+++ b/src/rtfwk/sampbuf.h
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+/* Sample Buffer with producer / consummer model */
+
+/* (C) 2012 by Sylvain Munaut <tnt@246tNt.com>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SAMPBUF_H__
+#define __SAMPBUF_H__
+
+
+#include <complex.h>
+#include <stdint.h>
+
+#include <osmocom/core/linuxlist.h>
+
+#include "ringbuf.h"
+
+
+/* Sample Actor */
+/* ------------ */
+
+struct sample_actor;
+
+struct sample_actor_desc {
+	int  (*init)(struct sample_actor *sc, void *params);
+	void (*fini)(struct sample_actor *sc);
+	int  (*work)(struct sample_actor *sc,
+	             float complex *data, unsigned int len);
+	int priv_size;
+};
+
+struct sample_actor {
+	/* List */
+	struct llist_head list;
+
+	/* Desc */
+	const struct sample_actor_desc *desc;
+
+	/* State tracking */
+	uint64_t time;
+
+	/* Private data */
+	void *priv;
+};
+
+
+struct sample_actor *
+sact_alloc(const struct sample_actor_desc *desc, void *params);
+
+void
+sact_free(struct sample_actor *sact);
+
+
+/* Sample Buffer */
+/* ------------- */
+
+#define RB_LEN		(1 << 24)	/* 16 Mb */
+#define MAX_CHANS	10
+
+struct sample_buf {
+	/* Channels */
+	int n_chans;
+
+	/* Underlying storage */
+	struct osmo_ringbuf *rb[MAX_CHANS];
+
+	/* Time/Sample tracking */
+	uint64_t chan_wtime[MAX_CHANS];
+	uint64_t chan_rtime[MAX_CHANS];
+
+	/* Producer */
+	struct sample_actor *producer[MAX_CHANS];
+
+	/* Consumers */
+	struct llist_head consumers[MAX_CHANS];
+};
+
+
+struct sample_buf *
+sbuf_alloc(int n_chans);
+
+void
+sbuf_free(struct sample_buf *sbuf);
+
+
+struct sample_actor *
+sbuf_set_producer(struct sample_buf *sbuf, int chan_id,
+                  const struct sample_actor_desc *desc, void *params);
+
+struct sample_actor *
+sbuf_add_consumer(struct sample_buf *sbuf, int chan_id,
+                  const struct sample_actor_desc *desc, void *params);
+
+
+void sbuf_work(struct sample_buf *sbuf);
+
+
+#endif /* __SAMPBUF_H__ */