[bTSstream-devel] [Git][videolan/bitstream][master] 2 commits: ietf: Add rfc8331

[Christophe Massiot (@cmassiot)]

Christophe Massiot pushed to branch master at VideoLAN / bitstream


Commits:
13542fde by Kieran Kunhya at 2023-10-30T01:04:18+00:00
ietf: Add rfc8331

- - - - -
2e7665ad by Christophe Massiot at 2023-11-27T15:48:36+01:00
Merge branch 'kierank-master'

- - - - -


1 changed file:

- + ietf/rfc8331.h


Changes:

=====================================
ietf/rfc8331.h
=====================================
@@ -0,0 +1,111 @@
+/*****************************************************************************
+ * rfc8331.h: RTP Payload for
+       Society of Motion Picture and Television Engineers (SMPTE)
+                        ST 291-1 Ancillary Data
+ *****************************************************************************
+ * Copyright (C) 2023 Open Broadcast Systems Ltd.
+ *
+ * Authors: Kieran Kunhya <kierank at obe.tv>
+ *
+ * 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 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.
+ *****************************************************************************/
+
+/*
+ * Normative references:
+ *  - IETF RFC 8331 RTP Payload for
+       Society of Motion Picture and Television Engineers (SMPTE)
+                        ST 291-1 Ancillary Data
+ */
+
+#ifndef __BITSTREAM_IETF_RFC8331_H__
+#define __BITSTREAM_IETF_RFC8331_H__
+
+#include <stdint.h>   /* uint8_t, uint16_t, etc... */
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#define RFC_8331_HEADER_LEN 8
+
+#define RFC_8331_F_PROGRESSIVE 0
+#define RFC_8331_F_FIELD_1 2
+#define RFC_8331_F_FIELD_2 3
+
+/*  
+ * 0                   1                   2                   3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |   Extended Sequence Number    |           Length              |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | ANC_Count     | F |                reserved                   |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+
+static inline void rfc8331_set_extended_sequence_number(uint8_t *buf, uint16_t number)
+{
+    buf[0] = (number >> 8) & 0xff;
+    buf[1] = number & 0xff;
+}
+
+static inline uint16_t rfc8331_get_extended_sequence_number(const uint8_t *buf)
+{
+    return (buf[0] << 8) | buf[1];
+}
+
+static inline void rfc8331_set_length(uint8_t *buf, uint16_t length)
+{
+    buf[2] = (length >> 8) & 0xff;
+    buf[3] = length & 0xff;
+}
+
+static inline uint16_t rfc8331_get_length(const uint8_t *buf)
+{
+    return (buf[2] << 8) | buf[3];
+}
+
+static inline void rfc8331_set_anc_count(uint8_t *buf, uint8_t anc_count)
+{
+    buf[4] = anc_count;
+}
+
+static inline uint8_t rfc8331_get_anc_count(const uint8_t *buf)
+{
+    return buf[4];
+}
+
+static inline void rfc8331_set_f(uint8_t *buf, uint8_t f)
+{
+    buf[5] = (f & 0x3) << 6;
+    buf[6] = 0;
+    buf[7] = 0;
+}
+
+static inline uint8_t rfc8331_get_f(const uint8_t *buf)
+{
+    return buf[5] >> 6;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif



View it on GitLab: https://code.videolan.org/videolan/bitstream/-/compare/061bc8e6d51aaf90f5eb4377c7d1fc52baee2a66...2e7665ad8089f2ba09fa672585badb4ff470b454

-- 
View it on GitLab: https://code.videolan.org/videolan/bitstream/-/compare/061bc8e6d51aaf90f5eb4377c7d1fc52baee2a66...2e7665ad8089f2ba09fa672585badb4ff470b454
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