util.h

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#pragma once
 
#include <smolrtsp/option.h>
#include <smolrtsp/types/error.h>
 
#include <stdint.h>
 
#include <slice99.h>
 
#define SMOLRTSP_CRLF (CharSlice99_from_str("\r\n"))
 
#define SMOLRTSP_DEFAULT_PORT 554
 
typedef enum {
    SmolRTSP_LowerTransport_TCP,
 
    SmolRTSP_LowerTransport_UDP,
} SmolRTSP_LowerTransport;
 
const char *SmolRTSP_LowerTransport_str(SmolRTSP_LowerTransport self);
 
typedef struct {
    uint16_t rtp_port;
 
    uint16_t rtcp_port;
} SmolRTSP_PortPair;
 
SMOLRTSP_DEF_OPTION(SmolRTSP_PortPair);
 
typedef struct {
    uint8_t rtp_channel;
 
    uint8_t rtcp_channel;
} SmolRTSP_ChannelPair;
 
SMOLRTSP_DEF_OPTION(SmolRTSP_ChannelPair);
 
typedef struct {
    SmolRTSP_LowerTransport lower;
 
    bool unicast;
 
    bool multicast;
 
    SmolRTSP_ChannelPairOption interleaved;
 
    SmolRTSP_PortPairOption client_port;
} SmolRTSP_TransportConfig;
 
int smolrtsp_parse_transport(
    SmolRTSP_TransportConfig *restrict config,
    CharSlice99 header_value) SMOLRTSP_PRIV_MUST_USE;
 
uint32_t smolrtsp_interleaved_header(uint8_t channel_id, uint16_t payload_len)
    SMOLRTSP_PRIV_MUST_USE;
 
void smolrtsp_parse_interleaved_header(
    const uint8_t data[restrict static 4], uint8_t *restrict channel_id,
    uint16_t *restrict payload_len);