lencod.c

H.264 codec source code

    img->bitdepth_chroma     = 0;
    img->max_imgpel_value_uv = 0;
    img->num_blk8x8_uv       = 0;
    img->num_cdc_coeff       = 0;
    img->mb_cr_size_x        = 0;
    img->mb_cr_size_y        = 0;
    
    img->bitdepth_chroma_qp_scale = 0;
    img->bitdepth_chroma_qp_scale = 0;
    
    img->chroma_qp_offset[0] = 0;
    img->chroma_qp_offset[1] = 0;
  }

  if((img->bitdepth_luma > img->bitdepth_chroma) || img->yuv_format == YUV400)
    img->pic_unit_size_on_disk = (img->bitdepth_luma > 8)? 16:8;
  else
    img->pic_unit_size_on_disk = (img->bitdepth_chroma > 8)? 16:8;

  img->num_ref_frames = active_sps->num_ref_frames;
  img->max_num_references   = active_sps->frame_mbs_only_flag ? active_sps->num_ref_frames : 2 * active_sps->num_ref_frames;

  img->buf_cycle = input->num_ref_frames;

  img->DeblockCall = 0;

//  img->framerate=INIT_FRAME_RATE;   // The basic frame rate (of the original sequence)
  img->framerate=(float) input->FrameRate;   // The basic frame rate (of the original sequence)


  get_mem_mv (&(img->pred_mv));
  get_mem_mv (&(img->all_mv));

  if (input->BiPredMotionEstimation)
  {
    get_mem_mv (&(img->bipred_mv1));
    get_mem_mv (&(img->bipred_mv2));
  }

  get_mem_ACcoeff (&(img->cofAC));
  get_mem_DCcoeff (&(img->cofDC));

  
  if(input->MbInterlace)
  {
    get_mem_mv (&(rddata_top_frame_mb.pred_mv));
    get_mem_mv (&(rddata_top_frame_mb.all_mv));

    get_mem_mv (&(rddata_bot_frame_mb.pred_mv));
    get_mem_mv (&(rddata_bot_frame_mb.all_mv));

    get_mem_mv (&(rddata_top_field_mb.pred_mv));
    get_mem_mv (&(rddata_top_field_mb.all_mv));

    get_mem_mv (&(rddata_bot_field_mb.pred_mv));
    get_mem_mv (&(rddata_bot_field_mb.all_mv));

    get_mem_ACcoeff (&(rddata_top_frame_mb.cofAC));
    get_mem_DCcoeff (&(rddata_top_frame_mb.cofDC));

    get_mem_ACcoeff (&(rddata_bot_frame_mb.cofAC));
    get_mem_DCcoeff (&(rddata_bot_frame_mb.cofDC));

    get_mem_ACcoeff (&(rddata_top_field_mb.cofAC));
    get_mem_DCcoeff (&(rddata_top_field_mb.cofDC));

    get_mem_ACcoeff (&(rddata_bot_field_mb.cofAC));
    get_mem_DCcoeff (&(rddata_bot_field_mb.cofDC));
  }

  if(img->max_imgpel_value > img->max_imgpel_value_uv)
    byte_abs_range = (img->max_imgpel_value + 1) * 2;
  else
    byte_abs_range = (img->max_imgpel_value_uv + 1) * 2;

  if ((img->quad = (int*)calloc (byte_abs_range, sizeof(int))) == NULL)
    no_mem_exit ("init_img: img->quad");
  img->quad+=byte_abs_range/2;
  for (i=0; i < byte_abs_range/2; ++i)
  {
    img->quad[i]=img->quad[-i]=i*i;
  }

  img->width    = (input->img_width+img->auto_crop_right);
  img->height   = (input->img_height+img->auto_crop_bottom);
  if (img->yuv_format != YUV400)
  {
    img->width_cr = img->width/(16/mb_width_cr[img->yuv_format]);
    img->height_cr= img->height/(16/mb_height_cr[img->yuv_format]);

    input->img_width_cr  = input->img_width/(16/mb_width_cr[img->yuv_format]);
    input->img_height_cr = input->img_height/(16/mb_height_cr[img->yuv_format]);
  }
  else
  {
    img->width_cr = 0;
    img->height_cr= 0;

    input->img_width_cr  = 0;
    input->img_height_cr = 0;
  }
  img->height_cr_frame = img->height_cr;
  
  img->PicWidthInMbs    = (input->img_width+img->auto_crop_right)/MB_BLOCK_SIZE;
  img->FrameHeightInMbs = (input->img_height+img->auto_crop_bottom)/MB_BLOCK_SIZE;
  img->FrameSizeInMbs   = img->PicWidthInMbs * img->FrameHeightInMbs;

  img->PicHeightInMapUnits = ( active_sps->frame_mbs_only_flag ? img->FrameHeightInMbs : img->FrameHeightInMbs/2 );

  if(((img->mb_data) = (Macroblock *) calloc(img->FrameSizeInMbs,sizeof(Macroblock))) == NULL)
    no_mem_exit("init_img: img->mb_data");

  if(input->UseConstrainedIntraPred)
  {
    if(((img->intra_block) = (int*)calloc(img->FrameSizeInMbs,sizeof(int))) == NULL)
      no_mem_exit("init_img: img->intra_block");
  }

  get_mem2D((byte***)&(img->ipredmode), img->height/BLOCK_SIZE, img->width/BLOCK_SIZE);        //need two extra rows at right and bottom
  get_mem2D((byte***)&(img->ipredmode8x8), img->height/BLOCK_SIZE, img->width/BLOCK_SIZE);     // help storage for ipredmode 8x8, inserted by YV
 
  get_mem2D((byte***)&(rddata_top_frame_mb.ipredmode), img->height/BLOCK_SIZE, img->width/BLOCK_SIZE);
  
  if(input->MbInterlace) 
  {
    get_mem2D((byte***)&(rddata_bot_frame_mb.ipredmode), img->height/BLOCK_SIZE, img->width/BLOCK_SIZE);
    get_mem2D((byte***)&(rddata_top_field_mb.ipredmode), img->height/BLOCK_SIZE, img->width/BLOCK_SIZE);
    get_mem2D((byte***)&(rddata_bot_field_mb.ipredmode), img->height/BLOCK_SIZE, img->width/BLOCK_SIZE);
  }
  // CAVLC mem
  get_mem3Dint(&(img->nz_coeff), img->FrameSizeInMbs, 4, 4+img->num_blk8x8_uv);


  get_mem2Ddb_offset(&(img->lambda_md), 10, 52 + img->bitdepth_luma_qp_scale,img->bitdepth_luma_qp_scale);
  get_mem2Ddb_offset(&(img->lambda_me), 10, 52 + img->bitdepth_luma_qp_scale,img->bitdepth_luma_qp_scale);
  get_mem2Dint_offset(&(img->lambda_mf), 10, 52 + img->bitdepth_luma_qp_scale,img->bitdepth_luma_qp_scale);
  //get_mem2Ddouble(&(img->lambda_md), 10, 52 + img->bitdepth_luma_qp_scale);

  CAVLC_init();

  for (i=0; i < img->width/BLOCK_SIZE; i++)
    for (j=0; j < img->height/BLOCK_SIZE; j++)
    {
      img->ipredmode[j][i]=-1;
      img->ipredmode8x8[j][i]=-1;
    }

  img->mb_y_upd=0;

  RandomIntraInit (img->width/16, img->height/16, input->RandomIntraMBRefresh);

  InitSEIMessages();  // Tian Dong (Sept 2002)

  // Initialize filtering parameters. If sending parameters, the offsets are 
  // multiplied by 2 since inputs are taken in "div 2" format.
  // If not sending parameters, all fields are cleared 
  if (input->LFSendParameters)
  {
    input->LFAlphaC0Offset <<= 1;
    input->LFBetaOffset <<= 1;
  }
  else
  {
    input->LFDisableIdc = 0;
    input->LFAlphaC0Offset = 0;
    input->LFBetaOffset = 0;
  }
}

/*!
 ***********************************************************************
 * \brief
 *    Free the Image structures
 * \par Input:
 *    Image Parameters struct img_par *img
 ***********************************************************************
 */
void free_img ()
{
  CloseSEIMessages(); // Tian Dong (Sept 2002)
  free_mem_mv (img->pred_mv);
  free_mem_mv (img->all_mv);

  if (input->BiPredMotionEstimation)
  {
    free_mem_mv (img->bipred_mv1);
    free_mem_mv (img->bipred_mv2);
  }

  free_mem_ACcoeff (img->cofAC);
  free_mem_DCcoeff (img->cofDC);

  if(input->MbInterlace)
  {
    free_mem_mv (rddata_top_frame_mb.pred_mv);
    free_mem_mv (rddata_top_frame_mb.all_mv);

    free_mem_mv (rddata_bot_frame_mb.pred_mv);
    free_mem_mv (rddata_bot_frame_mb.all_mv);

    free_mem_mv (rddata_top_field_mb.pred_mv);
    free_mem_mv (rddata_top_field_mb.all_mv);

    free_mem_mv (rddata_bot_field_mb.pred_mv);
    free_mem_mv (rddata_bot_field_mb.all_mv);

    free_mem_ACcoeff (rddata_top_frame_mb.cofAC);
    free_mem_DCcoeff (rddata_top_frame_mb.cofDC);

    free_mem_ACcoeff (rddata_bot_frame_mb.cofAC);
    free_mem_DCcoeff (rddata_bot_frame_mb.cofDC);

    free_mem_ACcoeff (rddata_top_field_mb.cofAC);
    free_mem_DCcoeff (rddata_top_field_mb.cofDC);

    free_mem_ACcoeff (rddata_bot_field_mb.cofAC);
    free_mem_DCcoeff (rddata_bot_field_mb.cofDC);
  }

  if(img->max_imgpel_value > img->max_imgpel_value_uv)
    free (img->quad-(img->max_imgpel_value + 1));
  else
    free (img->quad-(img->max_imgpel_value_uv + 1));

  if(input->MbInterlace) 
  {
    free_mem2D((byte**)rddata_bot_frame_mb.ipredmode);
    free_mem2D((byte**)rddata_top_field_mb.ipredmode);
    free_mem2D((byte**)rddata_bot_field_mb.ipredmode);
  }
}


/*!
 ************************************************************************
 * \brief
 *    Allocates the picture structure along with its dependent
 *    data structures
 * \return
 *    Pointer to a Picture
 ************************************************************************
 */

Picture *malloc_picture()
{
  Picture *pic;
  if ((pic = calloc (1, sizeof (Picture))) == NULL) no_mem_exit ("malloc_picture: Picture structure");
  //! Note: slice structures are allocated as needed in code_a_picture
  return pic;
}

/*!
 ************************************************************************
 * \brief
 *    Frees a picture
 * \param
 *    pic: POinter to a Picture to be freed
 ************************************************************************
 */


void free_picture(Picture *pic)
{
  if (pic != NULL)
  {
    free_slice_list(pic);
    free (pic);
  }
}


/*!
 ************************************************************************
 * \brief
 *    Reports frame statistical data to a stats file
 ************************************************************************
 */
void report_frame_statistic()
{
  FILE *p_stat_frm = NULL;
  static int   last_mode_use[NUM_PIC_TYPE][MAXMODE];
  static int   last_b8_mode_0[NUM_PIC_TYPE][2];
  static int   last_mode_chroma_use[4];
  static int64   last_bit_ctr_n = 0;
  int i;
  char name[20];
  int bitcounter;
  
#ifndef WIN32
  time_t now;
  struct tm *l_time;
  char string[1000];
#else
  char timebuf[128];
#endif
  

  // write to log file
  if ((p_stat_frm=fopen("stat_frame.dat","r"))==0)                      // check if file exist
  {
    if ((p_stat_frm=fopen("stat_frame.dat","a"))==NULL)            // append new statistic at the end
    {
      snprintf(errortext, ET_SIZE, "Error open file %s  \n","stat_frame.dat.dat");
      error(errortext, 500);
    }
    else                                            // Create header for new log file
    {
      fprintf(p_stat_frm," --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- \n");
      fprintf(p_stat_frm,"|            Encoder statistics. This file is generated during first encoding session, new sessions will be appended                                                                                                                                                                                                                                                                                                                                                              |\n");
      fprintf(p_stat_frm," --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- \n");
    }
  }
  else
  {
    fclose (p_stat_frm);
    if ((p_stat_frm=fopen("stat_frame.dat","a"))==NULL)            // File exist,just open for appending
    {
      snprintf(errortext, ET_SIZE, "Error open file %s  \n","stat_frame.dat.dat");
      error(errortext, 500);
    }
  }
  
  if (frame_statistic_start)
  {