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/*
* Copyright (c) 2019, 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
/* CVF 'format' field values. */
#define AVTP_CVF_FORMAT_RFC 0x02
/* CVF 'format subtype' field values. */
#define AVTP_CVF_FORMAT_SUBTYPE_MJPEG 0x00
#define AVTP_CVF_FORMAT_SUBTYPE_H264 0x01
#define AVTP_CVF_FORMAT_SUBTYPE_JPEG2000 0x02
enum avtp_cvf_field {
AVTP_CVF_FIELD_SV,
AVTP_CVF_FIELD_MR,
AVTP_CVF_FIELD_TV,
AVTP_CVF_FIELD_SEQ_NUM,
AVTP_CVF_FIELD_TU,
AVTP_CVF_FIELD_STREAM_ID,
AVTP_CVF_FIELD_TIMESTAMP,
AVTP_CVF_FIELD_STREAM_DATA_LEN,
AVTP_CVF_FIELD_FORMAT,
AVTP_CVF_FIELD_FORMAT_SUBTYPE,
AVTP_CVF_FIELD_M,
AVTP_CVF_FIELD_EVT,
AVTP_CVF_FIELD_H264_PTV,
AVTP_CVF_FIELD_H264_TIMESTAMP,
AVTP_CVF_FIELD_MAX,
};
struct avtp_cvf_h264_payload {
uint32_t h264_header;
uint8_t h264_data[0];
} __attribute__((__packed__));
/* Get value of CVF 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_cvf_pdu_get(const struct avtp_stream_pdu *pdu,
enum avtp_cvf_field field, uint64_t *val);
/* Set value of CVF 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_cvf_pdu_set(struct avtp_stream_pdu *pdu, enum avtp_cvf_field field,
uint64_t val);
/* Initialize CVF AVTPDU. All AVTPDU fields are initialized with zero except
* 'subtype' (which is set to AVTP_SUBTYPE_CVF), 'sv' (which is set to 1),
* 'format' (which is set to AVTP_CVF_FORMAT_RFC) and 'format_subtype'
* (which is set to the `subtype` specified).
* @pdu: Pointer to PDU struct.
* @subtype: AVTP CVF Format Subtype of this AVTPDU.
*
* Return values:
* 0: Success.
* -EINVAL: If any argument is invalid.
*/
int avtp_cvf_pdu_init(struct avtp_stream_pdu *pdu, uint8_t subtype);
#ifdef __cplusplus
}
#endif
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