util.h

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#pragma once
 
#include <compy/option.h>
#include <compy/types/error.h>
#include <compy/types/header_map.h>
 
#include <stdbool.h>
#include <stdint.h>
 
#include <slice99.h>
 
/* Forward declaration to avoid circular include with context.h */
typedef struct Compy_Context Compy_Context;
 
#define COMPY_CRLF (CharSlice99_from_str("\r\n"))
 
#define COMPY_DEFAULT_PORT 554
 
#define COMPY_DEFAULT_RTSPS_PORT 322
 
typedef enum {
    Compy_LowerTransport_TCP,
 
    Compy_LowerTransport_UDP,
} Compy_LowerTransport;
 
const char *Compy_LowerTransport_str(Compy_LowerTransport self);
 
typedef struct {
    uint16_t rtp_port;
 
    uint16_t rtcp_port;
} Compy_PortPair;
 
COMPY_DEF_OPTION(Compy_PortPair);
 
typedef struct {
    uint8_t rtp_channel;
 
    uint8_t rtcp_channel;
} Compy_ChannelPair;
 
COMPY_DEF_OPTION(Compy_ChannelPair);
 
typedef struct {
    Compy_LowerTransport lower;
 
    bool unicast;
 
    bool multicast;
 
    Compy_ChannelPairOption interleaved;
 
    Compy_PortPairOption client_port;
 
    Compy_PortPairOption server_port;
} Compy_TransportConfig;
 
int compy_parse_transport(
    Compy_TransportConfig *restrict config,
    CharSlice99 header_value) COMPY_PRIV_MUST_USE;
 
#define COMPY_REQUIRE_ONVIF_BACKCHANNEL                                        \
    (CharSlice99_from_str("www.onvif.org/ver20/backchannel"))
 
bool compy_require_has_tag(
    const Compy_HeaderMap *restrict headers,
    CharSlice99 tag) COMPY_PRIV_MUST_USE;
 
void compy_respond_option_not_supported(Compy_Context *ctx, CharSlice99 tag);
 
uint32_t compy_interleaved_header(uint8_t channel_id, uint16_t payload_len)
    COMPY_PRIV_MUST_USE;
 
void compy_parse_interleaved_header(
    const uint8_t data[restrict static 4], uint8_t *restrict channel_id,
    uint16_t *restrict payload_len);