diff options
Diffstat (limited to 'Transceiver52M/device/ipc/ipc_shm.h')
| -rw-r--r-- | Transceiver52M/device/ipc/ipc_shm.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/Transceiver52M/device/ipc/ipc_shm.h b/Transceiver52M/device/ipc/ipc_shm.h new file mode 100644 index 0000000..66f59c9 --- /dev/null +++ b/Transceiver52M/device/ipc/ipc_shm.h @@ -0,0 +1,43 @@ +/* +* 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; // plus num_buffers at end + 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 |