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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:28:17 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:28:17 +0000
commit7a46c07230b8d8108c0e8e80df4522d0ac116538 (patch)
treed483300dab478b994fe199a5d19d18d74153718a /src/modules/module-avb/packets.h
parentInitial commit. (diff)
downloadpipewire-upstream/0.3.65.tar.xz
pipewire-upstream/0.3.65.zip
Adding upstream version 0.3.65.upstream/0.3.65upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/modules/module-avb/packets.h')
-rw-r--r--src/modules/module-avb/packets.h101
1 files changed, 101 insertions, 0 deletions
diff --git a/src/modules/module-avb/packets.h b/src/modules/module-avb/packets.h
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+++ b/src/modules/module-avb/packets.h
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+/* Spa AVB support
+ *
+ * Copyright © 2022 Wim Taymans
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef AVB_PACKETS_H
+#define AVB_PACKETS_H
+
+#include <arpa/inet.h>
+
+#define AVB_SUBTYPE_61883_IIDC 0x00
+#define AVB_SUBTYPE_MMA_STREAM 0x01
+#define AVB_SUBTYPE_AAF 0x02
+#define AVB_SUBTYPE_CVF 0x03
+#define AVB_SUBTYPE_CRF 0x04
+#define AVB_SUBTYPE_TSCF 0x05
+#define AVB_SUBTYPE_SVF 0x06
+#define AVB_SUBTYPE_RVF 0x07
+#define AVB_SUBTYPE_AEF_CONTINUOUS 0x6E
+#define AVB_SUBTYPE_VSF_STREAM 0x6F
+#define AVB_SUBTYPE_EF_STREAM 0x7F
+#define AVB_SUBTYPE_NTSCF 0x82
+#define AVB_SUBTYPE_ESCF 0xEC
+#define AVB_SUBTYPE_EECF 0xED
+#define AVB_SUBTYPE_AEF_DISCRETE 0xEE
+#define AVB_SUBTYPE_ADP 0xFA
+#define AVB_SUBTYPE_AECP 0xFB
+#define AVB_SUBTYPE_ACMP 0xFC
+#define AVB_SUBTYPE_MAAP 0xFE
+#define AVB_SUBTYPE_EF_CONTROL 0xFF
+
+struct avb_ethernet_header {
+ uint8_t dest[6];
+ uint8_t src[6];
+ uint16_t type;
+} __attribute__ ((__packed__));
+
+struct avb_frame_header {
+ uint8_t dest[6];
+ uint8_t src[6];
+ uint16_t type; /* 802.1Q Virtual Lan 0x8100 */
+ uint16_t prio_cfi_id;
+ uint16_t etype;
+} __attribute__ ((__packed__));
+
+struct avb_packet_header {
+ uint8_t subtype;
+#if __BYTE_ORDER == __BIG_ENDIAN
+ unsigned sv:1; /* stream_id valid */
+ unsigned version:3;
+ unsigned subtype_data1:4;
+
+ unsigned subtype_data2:5;
+ unsigned len1:3;
+#elif __BYTE_ORDER == __LITTLE_ENDIAN
+ unsigned subtype_data1:4;
+ unsigned version:3;
+ unsigned sv:1;
+
+ unsigned len1:3;
+ unsigned subtype_data2:5;
+#elif
+#error "Unknown byte order"
+#endif
+ uint8_t len2:8;
+} __attribute__ ((__packed__));
+
+#define AVB_PACKET_SET_SUBTYPE(p,v) ((p)->subtype = (v))
+#define AVB_PACKET_SET_SV(p,v) ((p)->sv = (v))
+#define AVB_PACKET_SET_VERSION(p,v) ((p)->version = (v))
+#define AVB_PACKET_SET_SUB1(p,v) ((p)->subtype_data1 = (v))
+#define AVB_PACKET_SET_SUB2(p,v) ((p)->subtype_data2 = (v))
+#define AVB_PACKET_SET_LENGTH(p,v) ((p)->len1 = ((v) >> 8),(p)->len2 = (v))
+
+#define AVB_PACKET_GET_SUBTYPE(p) ((p)->subtype)
+#define AVB_PACKET_GET_SV(p) ((p)->sv)
+#define AVB_PACKET_GET_VERSION(p) ((p)->version)
+#define AVB_PACKET_GET_SUB1(p) ((p)->subtype_data1)
+#define AVB_PACKET_GET_SUB2(p) ((p)->subtype_data2)
+#define AVB_PACKET_GET_LENGTH(p) ((p)->len1 << 8 | (p)->len2)
+
+#endif /* AVB_PACKETS_H */