WIP

lib/micro-rtsp-server/include/micro_rtp_structs.h

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+#pragma once
+
+#include <stdint.h>
+
+// https://www.ietf.org/rfc/rfc2326#section-10.12
+typedef struct __attribute__((packed))
+{
+    char magic;      // Magic encapsulation ASCII dollar sign (24 hexadecimal)
+    uint8_t channel; // Channel identifier
+    uint16_t length; // Network order
+} rtp_over_tcp_hdr_t;
+
+// RTP data header - http://www.ietf.org/rfc/rfc3550.txt
+typedef struct __attribute__((packed))
+{
+    uint16_t version : 2;   // protocol version
+    uint16_t padding : 1;   // padding flag
+    uint16_t extension : 1; // header extension flag
+    uint16_t cc : 4;        // CSRC count
+    uint16_t marker : 1;    // marker bit
+    uint16_t pt : 7;        // payload type
+    uint16_t seq : 16;      // sequence number
+    uint32_t ts;            // timestamp
+    uint32_t ssrc;          // synchronization source
+} rtp_hdr_t;
+
+// https://datatracker.ietf.org/doc/html/rfc2435
+typedef struct __attribute__((packed))
+{
+    uint32_t tspec : 8; // type-specific field
+    uint32_t off : 24;  // fragment byte offset
+    uint8_t type;       // id of jpeg decoder params
+    uint8_t q;          // Q values 0-127 indicate the quantization tables. JPEG types 0 and 1 (and their corresponding types 64 and 65)
+    uint8_t width;      // frame width in 8 pixel blocks
+    uint8_t height;     // frame height in 8 pixel blocks
+} jpeg_hdr_t;
+
+typedef struct __attribute__((packed))
+{
+    uint16_t dri;
+    uint16_t f : 1;
+    uint16_t l : 1;
+    uint16_t count : 14;
+} jpeg_hdr_rst_t;
+
+typedef struct __attribute__((packed))
+{
+    uint8_t mbz;
+    uint8_t precision;
+    uint16_t length;
+} jpeg_hdr_qtable_t;