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添加rtcp fci相关代码

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This commit is contained in:
xia-chu
2021-04-14 16:19:46 +08:00
parent a4ba0c2b60
commit 765db1eb8b
3 changed files with 243 additions and 33 deletions
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107
src/Rtcp/RtcpFCI.h
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@@ -24,11 +24,36 @@ namespace mediakit {
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | First | Number | PictureID |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
//First: 13 bits
// The macroblock (MB) address of the first lost macroblock. The MB
// numbering is done such that the macroblock in the upper left
// corner of the picture is considered macroblock number 1 and the
// number for each macroblock increases from left to right and then
// from top to bottom in raster-scan order (such that if there is a
// total of N macroblocks in a picture, the bottom right macroblock
// is considered macroblock number N).
//
// Number: 13 bits
// The number of lost macroblocks, in scan order as discussed above.
//
// PictureID: 6 bits
// The six least significant bits of the codec-specific identifier
// that is used to reference the picture in which the loss of the
// macroblock(s) has occurred. For many video codecs, the PictureID
// is identical to the Temporal Reference.
class FCI_SLI {
public:
uint32_t first : 13;
uint32_t number : 13;
uint32_t pic_id : 6;
static size_t constexpr kSize = 4;
FCI_SLI(uint16_t first, uint16_t number, uint8_t pic_id);
uint16_t getFirst() const;
uint16_t getNumber() const;
uint8_t getPicID() const;
void net2Host();
string dumpString() const;
private:
uint32_t data;
} PACKED;
//PSFB fmt = 3
@@ -61,12 +86,15 @@ public:
// Native RPSI bit string: variable length
// The RPSI information as natively defined by the video codec.
char str[1];
char bit_string[5];
//Padding: #PB bits
// A number of bits set to zero to fill up the contents of the RPSI
// message to the next 32-bit boundary. The number of padding bits
// MUST be indicated by the PB field.
uint8_t padding;
static size_t constexpr kSize = 8;
} PACKED;
//PSFB fmt = 4
@@ -79,6 +107,15 @@ public:
// | Seq nr. | Reserved |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
class FCI_FIR {
public:
uint32_t ssrc;
uint32_t seq_number: 8;
uint32_t reserved: 24;
static size_t constexpr kSize = 8;
FCI_FIR(uint32_t ssrc, uint8_t seq_number, uint32_t reserved = 0);
void net2Host();
string dumpString() const;
} PACKED;
@@ -92,7 +129,8 @@ class FCI_FIR {
// | Seq nr. | Reserved | Index |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
class FCI_TSTR {
public:
static size_t constexpr kSize = 8;
} PACKED;
//PSFB fmt = 6
@@ -104,7 +142,7 @@ class FCI_TSTR {
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | Seq nr. | Reserved | Index |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
class FCI_TSTN {
class FCI_TSTN : public FCI_TSTR{
} PACKED;
@@ -120,7 +158,8 @@ class FCI_TSTN {
// | VBCM Octet String.... | Padding |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
class FCI_VBCM {
public:
static size_t constexpr kSize = 12;
} PACKED;
//PSFB fmt = 15
@@ -128,12 +167,6 @@ class FCI_VBCM {
// 0 1 2 3
// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// |V=2|P| FMT=15 | PT=206 | length |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | SSRC of packet sender |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | SSRC of media source |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | Unique identifier 'R' 'E' 'M' 'B' |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | Num SSRC | BR Exp | BR Mantissa |
@@ -141,31 +174,39 @@ class FCI_VBCM {
// | SSRC feedback |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | ... |
// Num SSRC (8 bits): Number of SSRCs in this message.
//
// BR Exp (6 bits): The exponential scaling of the mantissa for the
// maximum total media bit rate value, ignoring all packet
// overhead. The value is an unsigned integer [0..63], as
// in RFC 5104 section 4.2.2.1.
//
// BR Mantissa (18 bits): The mantissa of the maximum total media bit
// rate (ignoring all packet overhead) that the sender of
// the REMB estimates. The BR is the estimate of the
// traveled path for the SSRCs reported in this message.
// The value is an unsigned integer in number of bits per
// second.
//
// SSRC feedback (32 bits) Consists of one or more SSRC entries which
// this feedback message applies to.
class FCI_REMB {
public:
static size_t constexpr kSize = 8;
static string create(const std::initializer_list<uint32_t> &ssrcs, uint32_t bitrate);
void net2Host(size_t total_size);
string dumpString() const;
uint32_t getBitRate() const;
vector<uint32_t *> getSSRC();
//Unique identifier 'R' 'E' 'M' 'B'
char magic[4];
//Number of SSRCs in this message.
uint32_t num_ssrc : 8;
// BR Exp (6 bits): The exponential scaling of the mantissa for the
// maximum total media bit rate value, ignoring all packet
// overhead. The value is an unsigned integer [0..63], as
// in RFC 5104 section 4.2.2.1.
uint32_t br_exp : 6;
//BR Mantissa (18 bits): The mantissa of the maximum total media bit
// rate (ignoring all packet overhead) that the sender of
// the REMB estimates. The BR is the estimate of the
// traveled path for the SSRCs reported in this message.
// The value is an unsigned integer in number of bits per
// second.
uint32_t br_mantissa : 18;
//Num SSRC (8 bits)/BR Exp (6 bits)/ BR Mantissa (18 bits)
uint8_t bitrate[4];
// SSRC feedback (32 bits) Consists of one or more SSRC entries which
// this feedback message applies to.
uint32_t ssrc_feedback;
uint32_t ssrc_feedback[1];
} PACKED;
@@ -254,7 +295,7 @@ public:
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | recv delta | recv delta | zero padding |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
class FCI_TWCC : public FCI_TMMBR{
class FCI_TWCC{
public:
} PACKED;