From: Steinar H. Gunderson <sgunderson@bigfoot.com>
Date: Wed, 4 Apr 2018 22:49:20 +0000 (+0200)
Subject: Update metacube2.h with the latest version (sync with Nageru).
X-Git-Tag: 1.4.0~38
X-Git-Url: https://git.sesse.net/?p=cubemap;a=commitdiff_plain;h=677f16b5d25f4e7409337b598d35dd5e0f44fe7f

Update metacube2.h with the latest version (sync with Nageru).

Contains a new pts metadata block. We don't actually use it yet.
---

diff --git a/metacube2.h b/metacube2.h
index 5b6077e..4f232c8 100644
--- a/metacube2.h
+++ b/metacube2.h
@@ -35,9 +35,8 @@ struct metacube2_block_header {
 uint16_t metacube2_compute_crc(const struct metacube2_block_header *hdr);
 
 /*
- * The only currently defined metadata type. Set by the encoder,
- * and can be measured for latency purposes (e.g., if the network
- * can't keep up, the latency will tend to increase.
+ * Set by the encoder, and can be measured for latency purposes (e.g., if the
+ * network can't keep up, the latency will tend to increase.
  */
 #define METACUBE_METADATA_TYPE_ENCODER_TIMESTAMP 0x1
 
@@ -52,4 +51,21 @@ struct metacube2_timestamp_packet {
 	uint64_t tv_nsec;
 };
 
+/*
+ * Sent before a block to mark its presentation timestamp (ie., counts
+ * only for the next Metacube block). Used so that the reflector can know
+ * the length (in seconds) of fragments.
+ */
+#define METACUBE_METADATA_TYPE_NEXT_BLOCK_PTS 0x2
+
+struct metacube2_pts_packet {
+	uint64_t type;  /* METACUBE_METADATA_TYPE_NEXT_BLOCK_PTS, in network byte order. */
+
+	/* The timestamp of the first packet in the next block, in network byte order. */
+	int64_t pts;
+
+	/* Timebase "pts" is expressed in, as a fraction. Network byte order. */
+	uint64_t timebase_num, timebase_den;
+};
+
 #endif  /* !defined(_METACUBE_H) */