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RTC: Refine the extensions for RTP.

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This commit is contained in:
winlin 2020-06-26 15:24:37 +08:00
parent 62b70943d4
commit 5cc0f70f62
4 changed files with 305 additions and 117 deletions
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73
trunk/src/kernel/srs_kernel_rtc_rtp.hpp
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@ -99,7 +99,7 @@ const SrsExtensionInfo kExtensions[] = {
{kRtpExtensionTransportSequenceNumber, std::string("http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01")}
};
class SrsRtpHeaderExtensionMap
class SrsRtpExtensionTypes
{
public:
static const SrsRtpExtensionType kInvalidType = kRtpExtensionNone;
@ -108,30 +108,65 @@ public:
bool register_by_uri(int id, std::string uri);
SrsRtpExtensionType get_type(int id) const;
public:
SrsRtpHeaderExtensionMap();
virtual ~SrsRtpHeaderExtensionMap();
SrsRtpExtensionTypes();
virtual ~SrsRtpExtensionTypes();
private:
bool register_id(int id, SrsRtpExtensionType type, std::string uri);
private:
uint8_t ids_[kRtpExtensionNumberOfExtensions];
};
class SrsRtpHeaderExtension
class SrsRtpExtensionTwcc : public ISrsCodec
{
bool has_twcc_;
uint8_t id_;
uint16_t sn_;
public:
bool has_transport_sequence_number;
uint16_t transport_sequence_number;
uint8_t transport_cc_ext_id;
public:
SrsRtpHeaderExtension();
virtual ~SrsRtpHeaderExtension();
SrsRtpExtensionTwcc();
virtual ~SrsRtpExtensionTwcc();
bool has_twcc_ext();
uint8_t get_id();
void set_id(uint8_t id);
uint16_t get_sn();
void set_sn(uint16_t sn);
public:
// ISrsCodec
virtual srs_error_t decode(SrsBuffer* buf);
virtual srs_error_t encode(SrsBuffer* buf);
virtual int nb_bytes();
};
class SrsRtpHeader
class SrsRtpExtensions : public ISrsCodec
{
private:
bool has_ext_;
SrsRtpExtensionTypes types_;
SrsRtpExtensionTwcc twcc_;
public:
SrsRtpExtensions();
virtual ~SrsRtpExtensions();
bool exists();
void set_types_(const SrsRtpExtensionTypes* types);
srs_error_t get_twcc_sequence_number(uint16_t& twcc_sn);
srs_error_t set_twcc_sequence_number(uint8_t id, uint16_t sn);
// ISrsCodec
public:
virtual srs_error_t decode(SrsBuffer* buf);
private:
srs_error_t decode_0xbede(SrsBuffer* buf);
public:
virtual srs_error_t encode(SrsBuffer* buf);
virtual int nb_bytes();
};
class SrsRtpHeader : public ISrsCodec
{
private:
uint8_t padding_length;
bool extension;
uint8_t cc;
bool marker;
uint8_t payload_type;
@ -139,16 +174,15 @@ private:
uint32_t timestamp;
uint32_t ssrc;
uint32_t csrc[15];
uint16_t extension_length;
SrsRtpHeaderExtensionMap extension_map_;
SrsRtpHeaderExtension header_extension;
SrsRtpExtensions extensions_;
public:
SrsRtpHeader();
virtual ~SrsRtpHeader();
private:
srs_error_t parse_extension(SrsBuffer* buf);
public:
virtual srs_error_t decode(SrsBuffer* buf);
private:
srs_error_t parse_extensions(SrsBuffer* buf);
public:
virtual srs_error_t encode(SrsBuffer* buf);
virtual int nb_bytes();
public:
@ -164,8 +198,9 @@ public:
uint32_t get_ssrc() const;
void set_padding(uint8_t v);
uint8_t get_padding() const;
void set_extensions(const SrsRtpHeaderExtensionMap* extmap);
void set_extensions(const SrsRtpExtensionTypes* extmap);
srs_error_t get_twcc_sequence_number(uint16_t& twcc_sn);
srs_error_t set_twcc_sequence_number(uint8_t id, uint16_t sn);
};
class ISrsRtpPayloader : public ISrsCodec
@ -222,7 +257,7 @@ public:
// Copy the RTP packet.
SrsRtpPacket2* copy();
// Set RTP header extensions for encoding or decoding header extension
void set_rtp_header_extensions(const SrsRtpHeaderExtensionMap* extmap);
void set_extension_types(const SrsRtpExtensionTypes* v);
// interface ISrsEncoder
public:
virtual int nb_bytes();