lencod.c

H.264视频编解码的标准测试模型

/*!
 ***********************************************************************
 *  \mainpage
 *     This is the H.264/AVC encoder reference software. For detailed documentation
 *     see the comments in each file.
 *
 *  \author
 *     The main contributors are listed in contributors.h
 *
 *  \version
 *     JM 10.2 (FRExt)
 *
 *  \note
 *     tags are used for document system "doxygen"
 *     available at http://www.doxygen.org
 */
/*!
 *  \file
 *     lencod.c
 *  \brief
 *     H.264/AVC reference encoder project main()
 *  \author
 *   Main contributors (see contributors.h for copyright, address and affiliation details)
 *   - Inge Lille-Langoy               <[e-mail]>
 *   - Rickard Sjoberg                 <[e-mail]>
 *   - Stephan Wenger                  <[e-mail]>
 *   - Jani Lainema                    <[e-mail]>
 *   - Byeong-Moon Jeon                <[e-mail]>
 *   - Yoon-Seong Soh                  <[e-mail]>
 *   - Thomas Stockhammer              <[e-mail]>
 *   - Detlev Marpe                    <[e-mail]>
 *   - Guido Heising                   <[e-mail]>
 *   - Valeri George                   <[e-mail]>
 *   - Karsten Suehring                <[e-mail]>
 *   - Alexis Michael Tourapis         <[e-mail]>
 ***********************************************************************
 */

#include "contributors.h"

#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <math.h>
#include <sys/timeb.h>

#ifdef WIN32
#include <io.h>
#else
#include <unistd.h>
#endif

#include "global.h"

#include "configfile.h"
#include "leaky_bucket.h"
#include "memalloc.h"
#include "intrarefresh.h"
#include "fmo.h"
#include "sei.h"
#include "parset.h"
#include "image.h"
#include "output.h"
#include "fast_me.h"
#include "simplified_fast_me.h"
#include "ratectl.h"
#include "explicit_gop.h"
#include "epzs.h"

#define JM      "10 (FRExt)"
#define VERSION "10.2"
#define EXT_VERSION "(FRExt)"

InputParameters inputs,      *input = &inputs;
ImageParameters images,      *img   = &images;
StatParameters  statistics,  *stats = &statistics;
SNRParameters   snrs,        *snr   = &snrs;
Decoders decoders, *decs=&decoders;


#ifdef _ADAPT_LAST_GROUP_
int initial_Bframes = 0;
#endif

Boolean In2ndIGOP = FALSE;
int    start_frame_no_in_this_IGOP = 0;
int    start_tr_in_this_IGOP = 0;
int    FirstFrameIn2ndIGOP=0;
int    cabac_encoding = 0;
int    frame_statistic_start;
extern ColocatedParams *Co_located;

void Init_Motion_Search_Module (void);
void Clear_Motion_Search_Module (void);
void report_frame_statistic(void);
void SetLevelIndices(void);

void init_stats(void)
{
  stats->successive_Bframe = input->successive_Bframe;
  stats->bit_ctr_I = 0;
  stats->bit_ctr_P = 0;
  stats->bit_ctr_B = 0;
  snr->snr_y = 0.0;
  snr->snr_u = 0.0;
  snr->snr_v = 0.0;
  snr->snr_y1 = 0.0;
  snr->snr_u1 = 0.0;
  snr->snr_v1 = 0.0;
  snr->snr_ya = 0.0;
  snr->snr_ua = 0.0;
  snr->snr_va = 0.0;
  snr->sse_y  = 0.0;
  snr->sse_u  = 0.0;
  snr->sse_v  = 0.0;
  snr->msse_y = 0.0;
  snr->msse_u = 0.0;
  snr->msse_v = 0.0;
  snr->frame_ctr = 0;
}
/*!
 ***********************************************************************
 * \brief
 *    Main function for encoder.
 * \param argc
 *    number of command line arguments
 * \param argv
 *    command line arguments
 * \return
 *    exit code
 ***********************************************************************
 */
int main(int argc,char **argv)
{
  int M,N,n,np,nb;           //Rate control
  int primary_disp = 0;
  int i;
  giRDOpt_B8OnlyFlag = 0;

  p_dec = p_in = -1;

  p_stat = p_log = p_trace = NULL;

  frame_statistic_start = 1;

  Configure (argc, argv);

  Init_QMatrix();

  Init_QOffsetMatrix();

  AllocNalPayloadBuffer();

  init_poc();
  GenerateParameterSets();
  SetLevelIndices();
  
  init_img();
  frame_pic_1= malloc_picture();

  if (input->RDPictureDecision)
  {
    frame_pic_2 = malloc_picture();
    frame_pic_3 = malloc_picture();
  }

  si_frame_indicator=0; //indicates whether the frame is SP or SI
  frame_pic_2 = malloc_picture();//holds the encoded SI frame
   
  //allocation of lrec and lrec_uv for SI frames
  lrec = (int **) malloc(img->height * sizeof(int *));
  for(i=0;i<img->height;i++)
  {
    lrec[i] = (int *) malloc(img->width * sizeof(int ));
  }
  lrec_uv = (int ***) malloc(2 * sizeof(int **));
  for(i=0;i<2;i++)
  {
    lrec_uv[i] = (int **) malloc(img->height * sizeof(int *));
  }
  for(i=0;i<img->height;i++)
  {
    lrec_uv[0][i]=(int *) malloc(img->width * sizeof(int ));
    lrec_uv[1][i]=(int *) malloc(img->width * sizeof(int ));
  }
  number_sp2_frames=0;
  if (input->PicInterlace != FRAME_CODING)
  {
    top_pic = malloc_picture();
    bottom_pic = malloc_picture();
  }
  init_rdopt ();

  if (input->PyramidCoding )
  {
    init_gop_structure();
    if (input->PyramidCoding == 3)
    {
      interpret_gop_structure();
    }
    else
    {
      create_pyramid();
    }
  }  

  dpb.init_done = 0;
  init_dpb();
  init_out_buffer();
  init_stats();


  enc_picture = enc_frame_picture = enc_top_picture = enc_bottom_picture = NULL;

  init_global_buffers();

  create_context_memory ();

  Init_Motion_Search_Module ();

  information_init();

  //Rate control 
  if(input->RCEnable)
    rc_init_seq();

  if(input->FMEnable == 1)
    DefineThreshold();

  // Init frame type counter. Only supports single slice per frame.
  memset(frame_ctr, 0, 5 * sizeof(int));

  img->last_valid_reference = 0;
  tot_time=0;                 // time for total encoding session

#ifdef _ADAPT_LAST_GROUP_
  if (input->last_frame > 0)
    input->no_frames = 1 + (input->last_frame + input->jumpd) / (input->jumpd + 1);
  initial_Bframes = input->successive_Bframe;
#endif

  PatchInputNoFrames();

  // Write sequence header (with parameter sets)
  stats->bit_ctr_parametersets = 0;
  stats->bit_slice = start_sequence();
  stats->bit_ctr_parametersets += stats->bit_ctr_parametersets_n;
  start_frame_no_in_this_IGOP = 0;

  for (img->number=0; img->number < input->no_frames; img->number++)
  {
    //img->nal_reference_idc = 1;
    if (input->intra_period)
      img->nal_reference_idc = ((IMG_NUMBER % input->intra_period) && input->DisposableP) ? (img->number + 1)% 2 : 1;
    else
      img->nal_reference_idc = (img->number && input->DisposableP) ? (img->number + 1)% 2 : 1;

    //much of this can go in init_frame() or init_field()?
    //poc for this frame or field
    img->toppoc = (input->intra_period && input->idr_enable ? IMG_NUMBER % input->intra_period : IMG_NUMBER) * (2*(input->jumpd+1)); 

    if ((input->PicInterlace==FRAME_CODING)&&(input->MbInterlace==FRAME_CODING))
      img->bottompoc = img->toppoc;     //progressive
    else 
      img->bottompoc = img->toppoc+1;   //hard coded

    img->framepoc = min (img->toppoc, img->bottompoc);

    //frame_num for this frame
    //if (input->BRefPictures== 0 || input->successive_Bframe == 0 || img-> number < 2)
    if ((input->BRefPictures != 1 &&  input->PyramidCoding == 0) || input->successive_Bframe == 0 || img-> number < 2)// ||  input->PyramidCoding == 0)
    {
      if (input->intra_period && input->idr_enable)
      {
        img->frame_num =  ((IMG_NUMBER - primary_disp)  % input->intra_period ) % (1 << (log2_max_frame_num_minus4 + 4)); 
        if (IMG_NUMBER % input->intra_period  == 0)
        {
          img->frame_num = 0;
          primary_disp   = 0;
        }
      }
      else
      img->frame_num = (IMG_NUMBER - primary_disp) % (1 << (log2_max_frame_num_minus4 + 4)); 

    }
    else 
    {
      //img->frame_num ++;
      if (input->intra_period && input->idr_enable)
      {
        if (0== (img->number % input->intra_period))
        {
          img->frame_num=0;
          primary_disp   = 0;
        }
      }
      img->frame_num %= (1 << (log2_max_frame_num_minus4 + 4)); 
    }
    
    //the following is sent in the slice header
    img->delta_pic_order_cnt[0]=0;

    if (input->BRefPictures == 1)
    {
      if (img->number)
      {
        img->delta_pic_order_cnt[0]=+2 * input->successive_Bframe;
      }
    }

    SetImgType();

#ifdef _ADAPT_LAST_GROUP_
    if (input->successive_Bframe && input->last_frame && IMG_NUMBER+1 == input->no_frames)
    {                                           
      int bi = (int)((float)(input->jumpd+1)/(input->successive_Bframe+1.0)+0.499999);
      
      input->successive_Bframe = (input->last_frame-(img->number-1)*(input->jumpd+1))/bi-1;

      //about to code the last ref frame, adjust delta poc         
      img->delta_pic_order_cnt[0]= -2*(initial_Bframes - input->successive_Bframe);
      img->toppoc += img->delta_pic_order_cnt[0];
      img->bottompoc += img->delta_pic_order_cnt[0];
      img->framepoc = min (img->toppoc, img->bottompoc);
    }
#endif