Namespace inet::rtp
RtpMpegHeader
class(no description)
Extends
Name | Type | Description |
---|---|---|
FieldsChunk | (unknown -- not in documented files) |
Fields
Name | Type | Description |
---|---|---|
chunkLength | ||
headerLength | int | |
payloadLength | int |
size of the mpeg data |
mbz | uint8_t |
Unused. Must be set to zero in current specification. |
two | bool |
Set to 1 when the MPEG-2 video-specific header extension follows this header. |
temporalReference | uint16_t |
The temporal reference of the current picture within the current GOP. |
activeN | bool |
Set to 1 when the following bit (N) is used to signal changes in the picture header information for MPEG-2 payloads. |
newPictureHeader | bool |
Used for MPEG-2 payloads when the previous bit (AN) is set to 1. Otherwise, it must be set to zero. |
sequenceHeaderPresent | bool |
Normally 0 and set to 1 at the occurrence of each MPEG sequence header. |
beginningOfSlice | bool |
Set when the start of the packet payload is a slice start code, or when a slice start code is preceded only by one or more of a Video_Sequence_Header, GOP_header and/or Picture_Header. |
endOfSlice | bool |
Set when the last byte of the payload is the end of an MPEG slice. |
pictureType | uint8_t |
picture type of the frame the data in this packet belongs to. |
fbv | bool |
full_pel_backward_vector |
bfc | uint8_t |
backward_f_code |
ffv | bool |
full_pel_forward_vector |
ffc | uint8_t |
forward_f_code currenrtly unused fields: int mzb; int two; int temporalReference; int activeN; int newPictureHeader; int sequenceHeaderPresent; int beginningOfSlice; int endOfSlice; int fbv; int bfc; int ffv; int ffc; |
Packet operations (observed)
action | module |
---|---|
insertAtBack | RtpAvProfilePayload32Sender |
peekAtFront | RtpAvProfilePayload32Receiver |
Source code
class RtpMpegHeader extends FieldsChunk { chunkLength = B(4); int headerLength = 4; int payloadLength; // size of the mpeg data uint8_t mbz = 0; // Unused. Must be set to zero in current specification. bool two = false; // Set to 1 when the MPEG-2 video-specific header extension follows this header. uint16_t temporalReference = 0; // The temporal reference of the current picture within the current GOP. bool activeN = false; // Set to 1 when the following bit (N) is used to signal changes in the picture header information for MPEG-2 payloads. bool newPictureHeader = false; // Used for MPEG-2 payloads when the previous bit (AN) is set to 1. Otherwise, it must be set to zero. bool sequenceHeaderPresent = false; // Normally 0 and set to 1 at the occurrence of each MPEG sequence header. bool beginningOfSlice = false; // Set when the start of the packet payload is a slice start code, or when a slice start // code is preceded only by one or more of a Video_Sequence_Header, GOP_header and/or Picture_Header. bool endOfSlice = false; // Set when the last byte of the payload is the end of an MPEG slice. uint8_t pictureType; // picture type of the frame the data in this packet belongs to. bool fbv = false; // full_pel_backward_vector uint8_t bfc = 0; // backward_f_code bool ffv = false; // full_pel_forward_vector uint8_t ffc = 0; // forward_f_code // currenrtly unused fields: //int mzb; //int two; //int temporalReference; //int activeN; //int newPictureHeader; //int sequenceHeaderPresent; //int beginningOfSlice; //int endOfSlice; //int fbv; //int bfc; //int ffv; //int ffc; }File: src/inet/transportlayer/rtp/profiles/avprofile/RtpMpegPacket.msg