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SquashSRS4: Use fast parse TWCCID, ignore in packet parsing

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This commit is contained in:
winlin 2021-03-24 14:17:52 +08:00
parent b7b474deba
commit ecd4527342
5 changed files with 23 additions and 9 deletions
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8
trunk/src/kernel/srs_kernel_rtc_rtp.hpp
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@ -64,7 +64,7 @@ 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);
srs_error_t srs_rtp_fast_parse_twcc(char* buf, int size, uint8_t twcc_id, 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
@ -177,6 +177,8 @@ class SrsRtpExtensions// : public ISrsCodec
{
private:
bool has_ext_;
// by default, twcc isnot decoded. Because it is decoded by fast function(srs_rtp_fast_parse_twcc)
bool decode_twcc_extension_;
private:
// The extension types is used to decode the packet, which is reference to
// the types in publish stream.
@ -188,6 +190,7 @@ public:
SrsRtpExtensions();
virtual ~SrsRtpExtensions();
public:
void enable_twcc_decode() { decode_twcc_extension_ = true; } // SrsRtpExtensions::enable_twcc_decode
inline bool exists() { return has_ext_; } // SrsRtpExtensions::exists
void set_types_(SrsRtpExtensionTypes* types);
srs_error_t get_twcc_sequence_number(uint16_t& twcc_sn);
@ -229,6 +232,7 @@ public:
virtual srs_error_t encode(SrsBuffer* buf);
virtual uint64_t nb_bytes();
public:
void enable_twcc_decode() { extensions_.enable_twcc_decode(); } // SrsRtpHeader::enable_twcc_decode
void set_marker(bool v);
bool get_marker() const;
void set_payload_type(uint8_t v);
@ -326,6 +330,8 @@ public:
// Copy the RTP packet.
virtual SrsRtpPacket2* copy();
public:
// Parse the TWCC extension, ignore by default.
void enable_twcc_decode() { header.enable_twcc_decode(); } // SrsRtpPacket2::enable_twcc_decode
// Get and set the payload of packet.
void set_payload(ISrsRtpPayloader* p, SrsRtpPacketPayloadType pt) { payload_ = p; payload_type_ = pt; }
ISrsRtpPayloader* payload() { return payload_; }