Added first version of ACF GPC Format.

Signed-off-by: Naresh Nayak <Naresh.Nayak@de.bosch.com>

CMakeLists.txt

@@ -16,6 +16,7 @@ add_library(open1722 SHARED
     "src/avtp/aaf/CommonStream.c"
     "src/avtp/aaf/PcmStream.c"
     "src/avtp/acf/FlexRay.c"
+    "src/avtp/acf/Gpc.c"
     "src/avtp/acf/Can.c"
     "src/avtp/acf/CanBrief.c"
     "src/avtp/acf/Lin.c"

include/avtp/acf/Gpc.h

@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2024, COVESA
+ *
+ * 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 COVESA 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.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/**
+ * @file
+ * This file contains the fields descriptions of the IEEE 1722-2016 ACF GPC PDUs and
+ * functions to invoke corresponding parser and deparser.
+ */
+#pragma once
+
+#include <stdint.h>
+
+#include "avtp/Defines.h"
+#include "avtp/acf/Common.h"
+
+#define AVTP_GPC_HEADER_LEN         (2 * AVTP_QUADLET_SIZE)
+
+typedef struct {
+    uint8_t header[AVTP_GPC_HEADER_LEN];
+    uint8_t payload[0];
+} Avtp_Gpc_t;
+
+
+typedef enum  {
+
+    /* ACF common header fields */
+    AVTP_GPC_FIELD_ACF_MSG_TYPE = 0,
+    AVTP_GPC_FIELD_ACF_MSG_LENGTH,
+
+    /* ACF GPC header fields */
+    AVTP_GPC_FIELD_GPC_MSG_ID, 
+
+    /* Count number of fields for bound checks */
+    AVTP_GPC_FIELD_MAX
+} Avtp_GpcFields_t;
+
+/**
+ * Initializes an ACF GPC PDU header as specified in the IEEE 1722 Specification.
+ *
+ * @param gpc_pdu Pointer to the first bit of a 1722 ACF GPC PDU.
+ */
+int Avtp_Gpc_Init(Avtp_Gpc_t* gpc_pdu);
+
+/**
+ * Returns the value of an an ACF GPC PDU field as specified in the IEEE 1722 Specification.
+ *
+ * @param gpc_pdu Pointer to the first bit of an 1722 ACF GPC PDU.
+ * @param field Specifies the position of the data field to be read
+ * @param value Pointer to location to store the value.
+ * @returns This function returns 0 if the data field was successfully read from
+ * the 1722 ACF GPC PDU.
+ */
+int Avtp_Gpc_GetField(Avtp_Gpc_t* gpc_pdu, Avtp_GpcFields_t field, uint64_t* value);
+
+/**
+ * Sets the value of an an ACF GPC PDU field as specified in the IEEE 1722 Specification.
+ *
+ * @param gpc_pdu Pointer to the first bit of an 1722 ACF GPC PDU.
+ * @param field Specifies the position of the data field to be read
+ * @param value Pointer to location to store the value.
+ * @returns This function returns 0 if the data field was successfully set in
+ * the 1722 ACF GPC PDU.
+ */
+int Avtp_Gpc_SetField(Avtp_Gpc_t* gpc_pdu, Avtp_GpcFields_t field, uint64_t value);
+

src/avtp/acf/Gpc.c

@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2024, COVESA
+ *
+ * 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 COVESA 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.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <errno.h>
+#include <string.h>
+
+#include "avtp/acf/Common.h"
+#include "avtp/acf/Gpc.h"
+#include "avtp/Utils.h" 
+#include "avtp/Defines.h"
+
+/**
+ * This table maps all IEEE 1722 ACF GPC header fields to a descriptor.
+ */
+static const Avtp_FieldDescriptor_t Avtp_GpcFieldDesc[AVTP_GPC_FIELD_MAX] =
+{
+    /* ACF common header fields */
+    [AVTP_GPC_FIELD_ACF_MSG_TYPE]       = { .quadlet = 0, .offset =  0, .bits = 7 },
+    [AVTP_GPC_FIELD_ACF_MSG_LENGTH]     = { .quadlet = 0, .offset =  7, .bits = 9 },  
+    /* ACF GPC header fields */
+    [AVTP_GPC_FIELD_GPC_MSG_ID]         = { .quadlet = 0, .offset =  16, .bits = 48 },
+};
+
+int Avtp_Gpc_Init(Avtp_Gpc_t* gpc_pdu)
+{
+    if(!gpc_pdu) {
+        return -EINVAL;
+    }
+
+    memset(gpc_pdu, 0, sizeof(Avtp_Gpc_t));  
+    Avtp_Gpc_SetField(gpc_pdu, AVTP_GPC_FIELD_ACF_MSG_TYPE, AVTP_ACF_TYPE_GPC);
+
+    return 0;
+}
+
+int Avtp_Gpc_GetField(Avtp_Gpc_t* gpc_pdu, 
+                            Avtp_GpcFields_t field, uint64_t* value)
+{    
+    return Avtp_GetField(Avtp_GpcFieldDesc, AVTP_GPC_FIELD_MAX, (uint8_t *) gpc_pdu, (uint8_t) field, value);
+}
+
+int Avtp_Gpc_SetField(Avtp_Gpc_t* gpc_pdu, 
+                            Avtp_GpcFields_t field, uint64_t value)
+{    
+    return Avtp_SetField(Avtp_GpcFieldDesc, AVTP_GPC_FIELD_MAX, (uint8_t *) gpc_pdu, (uint8_t) field, value);
+}