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/*
* Copyright (c) 2018, Intel Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Intel Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <errno.h>
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
/* CRF 'type' field values. */
#define AVTP_CRF_TYPE_USER 0x00
#define AVTP_CRF_TYPE_AUDIO_SAMPLE 0x01
#define AVTP_CRF_TYPE_VIDEO_FRAME 0x02
#define AVTP_CRF_TYPE_VIDEO_LINE 0x03
#define AVTP_CRF_TYPE_MACHINE_CYCLE 0x04
/* CRF 'pull' field values. */
#define AVTP_CRF_PULL_MULT_BY_1 0x00
#define AVTP_CRF_PULL_MULT_BY_1_OVER_1_001 0x01
#define AVTP_CRF_PULL_MULT_BY_1_001 0x02
#define AVTP_CRF_PULL_MULT_BY_24_OVER_25 0x03
#define AVTP_CRF_PULL_MULT_BY_25_OVER_24 0x04
#define AVTP_CRF_PULL_MULT_BY_1_OVER_8 0x05
struct avtp_crf_pdu {
uint32_t subtype_data;
uint64_t stream_id;
uint64_t packet_info;
uint64_t crf_data[0];
} __attribute__ ((__packed__));
enum avtp_crf_field {
AVTP_CRF_FIELD_SV,
AVTP_CRF_FIELD_MR,
AVTP_CRF_FIELD_FS,
AVTP_CRF_FIELD_TU,
AVTP_CRF_FIELD_SEQ_NUM,
AVTP_CRF_FIELD_TYPE,
AVTP_CRF_FIELD_STREAM_ID,
AVTP_CRF_FIELD_PULL,
AVTP_CRF_FIELD_BASE_FREQ,
AVTP_CRF_FIELD_CRF_DATA_LEN,
AVTP_CRF_FIELD_TIMESTAMP_INTERVAL,
AVTP_CRF_FIELD_MAX,
};
/* Get value from CRF AVTPDU field.
* @pdu: Pointer to PDU struct.
* @field: PDU field to be retrieved.
* @val: Pointer to variable which the retrieved value should be saved.
*
* Returns:
* 0: Success.
* -EINVAL: If any argument is invalid.
*/
int avtp_crf_pdu_get(const struct avtp_crf_pdu *pdu,
enum avtp_crf_field field, uint64_t *val);
/* Set value from CRF AVTPDU field.
* @pdu: Pointer to PDU struct.
* @field: PDU field to be set.
* @val: Value to be set.
*
* Returns:
* 0: Success.
* -EINVAL: If any argument is invalid.
*/
int avtp_crf_pdu_set(struct avtp_crf_pdu *pdu, enum avtp_crf_field field,
uint64_t val);
/* Initialize CRF AVTPDU. All AVTPDU fields are initialized with zero except
* 'subtype' (which is set to AVTP_SUBTYPE_CRF) and 'sv' (which is set to 1).
* @pdu: Pointer to PDU struct.
*
* Return values:
* 0: Success.
* -EINVAL: If any argument is invalid.
*/
int avtp_crf_pdu_init(struct avtp_crf_pdu *pdu);
#ifdef __cplusplus
}
#endif
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