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RTC: Parse TWCC SN fastly.

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winlin 2021-02-07 15:48:46 +08:00
parent d184b5662c
commit 9a9efb8546
3 changed files with 65 additions and 8 deletions
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trunk/src/kernel/srs_kernel_rtc_rtp.hpp
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@ -57,10 +57,12 @@ class SrsBuffer;
class SrsRtpRawPayload;
class SrsRtpFUAPayload2;
class SrsSharedPtrMessage;
class SrsRtpExtensionTypes;
// Fast parse the SSRC from RTP packet. Return 0 if invalid.
uint32_t srs_rtp_fast_parse_ssrc(char* buf, int size);
uint8_t srs_rtp_fast_parse_pt(char* buf, int size);
srs_error_t srs_rtp_fast_parse_twcc(char* buf, int size, SrsRtpExtensionTypes* types, uint16_t& twcc_sn);
// The "distance" between two uint16 number, for example:
// distance(prev_value=3, value=5) === (int16_t)(uint16_t)((uint16_t)3-(uint16_t)5) === -2