"HEVC Learning and research" 1, the basic structure of HM-16.7 Encoder

The project name of the encoder in the entire HM solution is Tappencoder, and the entry point function is located in the Encmain.cpp file:

1 intMainintargcChar*argv[])2 {3 tappenctop ctappenctop;4 5   //Print Information6fprintf (stdout,"\ n" );7fprintf (stdout,"HM software:encoder Version [%s] (including REXT)", nv_version);8 fprintf (stdout, nvm_onos);9 fprintf (stdout, nvm_compiledby);Ten fprintf (stdout, nvm_bits); Onefprintf (stdout,"\ n" ); A  -   //Create application Encoder class - ctappenctop.create (); the  -   //Parse Configuration -   Try -   { +     if(!ctappenctop.parsecfg (argc, argv)) -     { + Ctappenctop.destroy (); A #ifEnvironment_variable_debug_and_test at Envvar::p rintenvvar (); - #endif -       return 1; -     } -   } -   Catch(DF::p rogram_options_lite::P arsefailure &e) in   { -Std::cerr <<"Error parsing option \ ""<< E.arg <<"\ "with argument \""<< E.val <<"\"."<<Std::endl; to     return 1; +   } -  the #ifPrint_macro_values * printmacrosettings (); $ #endifPanax Notoginseng  - #ifEnvironment_variable_debug_and_test the Envvar::p rintenvvarinuse (); + #endif A  the   //Starting Time + Double Dresult; -clock_t Lbefore =clock (); $  $   //Call encoding function - Ctappenctop.encode (); -  the   //Ending time -Dresult = (Double) (Clock ()-lbefore)/clocks_per_sec;Wuyiprintf"\ n Total time:%12.3f sec.\n", Dresult); the  -   //Destroy Application Encoder class Wu Ctappenctop.destroy (); -  About   return 0; $}

Main

Mainly include:

1. The entry point function main () "creates the Ctappenctop class, parses the input configuration function, sets the time-dependent parameters"
2. Ctappenctop.encode () "Initializes several objects used by the encoder, allocates YUV data caches, and loops through the YUV file"
3. M_ctenctop.encode (...) "Call M_CGOPENCODER.COMPRESSGOP () to implement the actual encoding of a GOP"
4. M_CGOPENCODER.COMPRESSGOP () "Call Initgop to set the parameters of the GOP; call M_pcsliceencoder->initencslice () to create encoded slice objects with information from SPS and PPS ; Call M_pcsliceencoder->compressslice (Pcpic) to encode a slice. 】
5. M_pcsliceencoder->compressslice (Pcpic) "Sets the parameters of the encoding slice and processes each cu in slice"
6. Tenccu::compresscu () "Encode a CU"

Each of these functions is called in the previous function to form a structure similar to a reverse call stack.

"HEVC Learning and research" 1, the basic structure of HM-16.7 Encoder