/*
* Copyright 2020 sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
* Author: Eric Wild <ewild@sysmocom.de>
*
* SPDX-License-Identifier: 0BSD
*
* Permission to use, copy, modify, and/or distribute this software for any purpose
* with or without fee is hereby granted.THE SOFTWARE IS PROVIDED "AS IS" AND THE
* AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR
* BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE
* USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef IPC_SHM_H
#define IPC_SHM_H

#ifdef __cplusplus
extern "C" {
#endif

#include <shm.h>
#include <stdint.h>

#ifdef __cplusplus
}
#endif

struct ipc_shm_io {
	volatile struct ipc_shm_raw_stream *this_stream;
	volatile struct ipc_shm_raw_smpl_buf **volatile buf_ptrs;
	uint32_t partial_read_begin_ptr;
};

struct ipc_shm_io *ipc_shm_init_consumer(struct ipc_shm_stream *s);
struct ipc_shm_io *ipc_shm_init_producer(struct ipc_shm_stream *s);
void ipc_shm_close(struct ipc_shm_io *r);
int32_t ipc_shm_enqueue(struct ipc_shm_io *r, uint64_t timestamp, uint32_t len_in_sps, uint16_t *data);
int32_t ipc_shm_tryenqueue(struct ipc_shm_io *r, uint64_t timestamp, uint32_t len_in_sps, uint16_t *data);
volatile struct ipc_shm_raw_smpl_buf *ipc_shm_dequeue(struct ipc_shm_io *r);
int32_t ipc_shm_read(struct ipc_shm_io *r, uint16_t *out_buf, uint32_t num_samples, uint64_t *timestamp,
		     uint32_t timeout_seconds);

#endif // IPC_SHM_H