ldecod.c

h.264/avc 视频编码程序,实现分数像素匹配功能,非原创.

        currSlice->max_part_nr = 1;
        break;
      case PAR_DP_3:
        error("Data Partitioning Mode 3 in 26L-Format not supported",1);
        break;
      default:
        error("Data Partitioning Mode not supported!",1);
        break;
      }

      currSlice->partArr = (DataPartition *) calloc(1, sizeof(DataPartition));
      if (currSlice->partArr == NULL)
      {
        snprintf(errortext, ET_SIZE, "Memory allocation for Data Partition datastruct in NAL-mode %d failed", inp->of_mode);
        error(errortext, 100);
      }
      dataPart = currSlice->partArr;
      dataPart->bitstream = (Bitstream *) calloc(1, sizeof(Bitstream));
      if (dataPart->bitstream == NULL)
      {
        snprintf(errortext, ET_SIZE, "Memory allocation for Bitstream datastruct in NAL-mode %d failed", inp->of_mode);
        error(errortext, 100);
      }
      dataPart->bitstream->streamBuffer = (byte *) calloc(buffer_size, sizeof(byte));
      if (dataPart->bitstream->streamBuffer == NULL)
      {
        snprintf(errortext, ET_SIZE, "Memory allocation for bitstream buffer in NAL-mode %d failed", inp->of_mode);
        error(errortext, 100);
      }
      return;
    
    case PAR_OF_RTP:
      img->currentSlice = (Slice *) calloc(1, sizeof(Slice));
      if ( (currSlice = img->currentSlice) == NULL)
      {
        snprintf(errortext, ET_SIZE, "Memory allocation for Slice datastruct in NAL-mode %d failed", inp->of_mode);
        error(errortext, 100);
      }

      if (inp->symbol_mode == CABAC)
      {
        // create all context models
        currSlice->mot_ctx = create_contexts_MotionInfo();
        currSlice->tex_ctx = create_contexts_TextureInfo();
      }

      switch(inp->partition_mode)
      {
      case PAR_DP_1:
        currSlice->max_part_nr = 1;
        break;
      case PAR_DP_3:
        currSlice->max_part_nr = 3;
        break;
      default:
        error("Data Partitioning Mode not supported!",1);
        break;
      }

      currSlice->partArr = (DataPartition *) calloc(3, sizeof(DataPartition));
      if (currSlice->partArr == NULL)
      {
        snprintf(errortext, ET_SIZE, "Memory allocation for Data Partition datastruct in NAL-mode %d failed", inp->of_mode);
        error(errortext, 100);
      }

      for (i=0; i<3; i++) // loop over all data partitions
      {
        dataPart = &(currSlice->partArr[i]);
        dataPart->bitstream = (Bitstream *) calloc(1, sizeof(Bitstream));
        if (dataPart->bitstream == NULL)
        {
          snprintf(errortext, ET_SIZE, "Memory allocation for Bitstream datastruct in NAL-mode %d failed", inp->of_mode);
          error(errortext, 100);
        }
        dataPart->bitstream->streamBuffer = (byte *) calloc(buffer_size, sizeof(byte));
        if (dataPart->bitstream->streamBuffer == NULL)
        {
          snprintf(errortext, ET_SIZE, "Memory allocation for bitstream buffer in NAL-mode %d failed", inp->of_mode);
          error(errortext, 100);
        }
      }
      return;

    default:
      snprintf(errortext, ET_SIZE, "Output File Mode %d not supported", inp->of_mode);
      error(errortext, 600);
  }

}

/*!
 ************************************************************************
 * \brief
 *    Memory frees of the Slice structure and of its dependent
 *    data structures
 *
 * \par Input:
 *    Input Parameters struct inp_par *inp,  struct img_par *img
 ************************************************************************
 */
void free_slice(struct inp_par *inp, struct img_par *img)
{
  int i;
  DataPartition *dataPart;
  Slice *currSlice = img->currentSlice;

  switch(inp->of_mode) // init depending on NAL mode
  {
    case PAR_OF_IFF:
      dataPart = currSlice->partArr;  // only one active data partition
      if (dataPart->bitstream->streamBuffer != NULL)
        free(dataPart->bitstream->streamBuffer);
      if (dataPart->bitstream != NULL)
        free(dataPart->bitstream);
      if (currSlice->partArr != NULL)
        free(currSlice->partArr);
      if (inp->symbol_mode == CABAC)
      {
        // delete all context models
        delete_contexts_MotionInfo(currSlice->mot_ctx);
        delete_contexts_TextureInfo(currSlice->tex_ctx);
      }
      if (currSlice != NULL)
        free(img->currentSlice);
      break;
    case PAR_OF_26L:
      // Current File Format
      dataPart = currSlice->partArr;  // only one active data partition
      if (dataPart->bitstream->streamBuffer != NULL)
        free(dataPart->bitstream->streamBuffer);
      if (dataPart->bitstream != NULL)
        free(dataPart->bitstream);
      if (currSlice->partArr != NULL)
        free(currSlice->partArr);
      if (inp->symbol_mode == CABAC)
      {
        // delete all context models
        delete_contexts_MotionInfo(currSlice->mot_ctx);
        delete_contexts_TextureInfo(currSlice->tex_ctx);
      }
      if (currSlice != NULL)
        free(img->currentSlice);
      break;
    case PAR_OF_RTP:
      // RTP File Format.
      // Here, mallocSLice is always called with 3 partitions, although sometimes only one is used
      for (i=0; i<3; i++) // loop over all data partitions
      {
        dataPart = &(currSlice->partArr[i]);
        if (dataPart->bitstream->streamBuffer != NULL)
          free(dataPart->bitstream->streamBuffer);
        if (dataPart->bitstream != NULL)
          free(dataPart->bitstream);
      }
      if (currSlice->partArr != NULL)
        free(currSlice->partArr);
      if (inp->symbol_mode == CABAC)
      {
        // delete all context models
        delete_contexts_MotionInfo(currSlice->mot_ctx);
        delete_contexts_TextureInfo(currSlice->tex_ctx);
      }
      if (currSlice != NULL)
        free(img->currentSlice);
      break;
    default:
      snprintf(errortext, ET_SIZE,  "Output File Mode %d not supported", inp->of_mode);
      error(errortext, 400);
  }

}

/*!
 ************************************************************************
 * \brief
 *    Dynamic memory allocation of frame size related global buffers
 *    buffers are defined in global.h, allocated memory must be freed in
 *    void free_global_buffers()
 *
 *  \par Input:
 *    Input Parameters struct inp_par *inp, Image Parameters struct img_par *img
 *
 *  \par Output:
 *     Number of allocated bytes
 ***********************************************************************
 */
int init_global_buffers(struct inp_par *inp, struct img_par *img)
{
  int i,j;

  int memory_size=0;
#ifdef _ADAPT_LAST_GROUP_
  extern int *last_P_no;
#endif

#ifdef _ADAPT_LAST_GROUP_
  if ((last_P_no = (int*)malloc(img->buf_cycle*sizeof(int))) == NULL)
    no_mem_exit("init_global_buffers: last_P_no");
#endif

  // allocate memory for encoding frame buffers: imgY, imgUV
  memory_size += get_mem2D(&imgY, img->height, img->width);
  memory_size += get_mem3D(&imgUV, 2, img->height_cr, img->width_cr);

  // allocate memory for multiple ref. frame buffers: mref, mcref
  // rows and cols for croma component mcef[ref][croma][4x][4y] are switched
  // compared to luma mref[ref][4y][4x] for whatever reason
  // number of reference frames increased by one for next P-frame
  alloc_mref(img);
  
  // allocate memory for imgY_prev
  memory_size += get_mem2D(&imgY_prev, img->height, img->width);
  memory_size += get_mem3D(&imgUV_prev, 2, img->height_cr, img->width_cr);

  // allocate memory for reference frames of each block: refFrArr
  memory_size += get_mem2Dint(&refFrArr, img->height/BLOCK_SIZE, img->width/BLOCK_SIZE);

  // allocate memory for reference frame in find_snr
  memory_size += get_mem2D(&imgY_ref, img->height, img->width);
  memory_size += get_mem3D(&imgUV_ref, 2, img->height_cr, img->width_cr);

  // allocate memory in structure img
  if(((img->mb_data) = (Macroblock *) calloc((img->width/MB_BLOCK_SIZE) * (img->height/MB_BLOCK_SIZE),sizeof(Macroblock))) == NULL)
    no_mem_exit("init_global_buffers: img->mb_data");
  if(img->UseConstrainedIntraPred)
  {
    if(((img->intra_block) = (int**)calloc((j=(img->width/MB_BLOCK_SIZE) * (img->height/MB_BLOCK_SIZE)),sizeof(int))) == NULL)
      no_mem_exit("init_global_buffers: img->intra_block");
    for (i=0; i<j; i++)
    {
      if ((img->intra_block[i] = (int*)calloc(4, sizeof(int))) == NULL)
        no_mem_exit ("init_global_buffers: img->intra_block");
    }
  }
  memory_size += get_mem3Dint(&(img->mv),img->width/BLOCK_SIZE +4, img->height/BLOCK_SIZE,3);
  memory_size += get_mem2Dint(&(img->ipredmode),img->width/BLOCK_SIZE +2 , img->height/BLOCK_SIZE +2);
  memory_size += get_mem3Dint(&(img->dfMV),img->width/BLOCK_SIZE +4, img->height/BLOCK_SIZE,3);
  memory_size += get_mem3Dint(&(img->dbMV),img->width/BLOCK_SIZE +4, img->height/BLOCK_SIZE,3);
  memory_size += get_mem2Dint(&(img->fw_refFrArr),img->height/BLOCK_SIZE,img->width/BLOCK_SIZE);
  memory_size += get_mem2Dint(&(img->bw_refFrArr),img->height/BLOCK_SIZE,img->width/BLOCK_SIZE);
  memory_size += get_mem3Dint(&(img->fw_mv),img->width/BLOCK_SIZE +4, img->height/BLOCK_SIZE,3);
  memory_size += get_mem3Dint(&(img->bw_mv),img->width/BLOCK_SIZE +4, img->height/BLOCK_SIZE,3);
  return (memory_size);
}

/*!
 ************************************************************************
 * \brief
 *    Free allocated memory of frame size related global buffers
 *    buffers are defined in global.h, allocated memory is allocated in
 *    int init_global_buffers()
 *
 * \par Input:
 *    Input Parameters struct inp_par *inp, Image Parameters struct img_par *img
 *
 * \par Output:
 *    none
 *
 ************************************************************************
 */
void free_global_buffers(struct inp_par *inp, struct img_par *img)
{
  int i,j;
#ifdef _ADAPT_LAST_GROUP_
  extern int *last_P_no;
  free (last_P_no);
#endif

  free_mem2D(imgY);
  free_mem3D(imgUV,2);
  free_mem2D(imgY_prev);
  free_mem3D(imgUV_prev,2);

  // free multiple ref frame buffers
  free (mref);
  free (mcef);

  free_mem2Dint(refFrArr);

  free_mem2D (imgY_ref);
  free_mem3D (imgUV_ref,2);

  // free mem, allocated for structure img
  if (img->mb_data       != NULL) free(img->mb_data);

  if(img->UseConstrainedIntraPred)
  {
    j = (img->width/16)*(img->height/16);
    for (i=0; i<j; i++)
    {
      free (img->intra_block[i]);
    }
    free (img->intra_block);
  }

  free_mem3Dint(img->mv,img->width/BLOCK_SIZE + 4);

  free_mem2Dint (img->ipredmode);

  free_mem3Dint(img->dfMV,img->width/BLOCK_SIZE + 4);
  free_mem3Dint(img->dbMV,img->width/BLOCK_SIZE + 4);

  free_mem2Dint(img->fw_refFrArr);
  free_mem2Dint(img->bw_refFrArr);

  free_mem3Dint(img->fw_mv,img->width/BLOCK_SIZE + 4);
  free_mem3Dint(img->bw_mv,img->width/BLOCK_SIZE + 4);
}