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https://github.com/rzeldent/esp32cam-rtsp.git
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52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
#pragma once
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#include <stdint.h>
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// https://www.ietf.org/rfc/rfc2326#section-10.12
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typedef struct __attribute__((packed))
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{
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char magic = '$'; // Magic encapsulation ASCII dollar sign (24 hexadecimal)
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uint8_t channel; // Channel identifier
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uint16_t length; // Network order
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} rtp_over_tcp_hdr_t;
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// RTP data header - http://www.ietf.org/rfc/rfc3550.txt
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typedef struct __attribute__((packed))
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{
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uint16_t version : 2; // protocol version
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uint16_t padding : 1; // padding flag
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uint16_t extension : 1; // header extension flag
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uint16_t cc : 4; // CSRC count
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uint16_t marker : 1; // marker bit
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uint16_t pt : 7; // payload type
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uint16_t seq : 16; // sequence number
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uint32_t ts; // timestamp
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uint32_t ssrc; // synchronization source
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} rtp_hdr_t;
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// https://datatracker.ietf.org/doc/html/rfc2435
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typedef struct __attribute__((packed))
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{
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uint32_t tspec : 8; // type-specific field
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uint32_t off : 24; // fragment byte offset
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uint8_t type; // id of jpeg decoder params
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uint8_t q; // Q values 0-127 indicate the quantization tables. JPEG types 0 and 1 (and their corresponding types 64 and 65)
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uint8_t width; // frame width in 8 pixel blocks
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uint8_t height; // frame height in 8 pixel blocks
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} jpeg_hdr_t;
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typedef struct __attribute__((packed))
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{
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uint16_t dri;
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uint16_t f : 1;
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uint16_t l : 1;
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uint16_t count : 14;
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} jpeg_hdr_rst_t;
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typedef struct __attribute__((packed))
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{
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uint8_t mbz;
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uint8_t precision;
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uint16_t length;
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} jpeg_hdr_qtable_t;
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