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/*!

 ************************************************************************

 *  \file

 *     parset.c

 *  \brief

 *     Parameter Sets

 *  \author

 *     Main contributors (see contributors.h for copyright, address and affiliation details)

 *     - Stephan Wenger          <stewe@cs.tu-berlin.de>

 *

 ***********************************************************************

 */

#include <stdlib.h>

#include <assert.h>

#include <string.h>

#include "global.h"

#include "parsetcommon.h"

#include "parset.h"

#include "nalu.h"

#include "memalloc.h"

#include "fmo.h"

#include "cabac.h"

#include "vlc.h"

#include "mbuffer.h"

#include "erc_api.h"

#if TRACE

#define SYMTRACESTRING(s) strncpy(sym->tracestring,s,TRACESTRING_SIZE)

#else

#define SYMTRACESTRING(s) // do nothing

#endif

const byte ZZ_SCAN[16]  =

{  0,  1,  4,  8,  5,  2,  3,  6,  9, 12, 13, 10,  7, 11, 14, 15

};

const byte ZZ_SCAN8[64] =

{  0,  1,  8, 16,  9,  2,  3, 10, 17, 24, 32, 25, 18, 11,  4,  5,

   12, 19, 26, 33, 40, 48, 41, 34, 27, 20, 13,  6,  7, 14, 21, 28,

   35, 42, 49, 56, 57, 50, 43, 36, 29, 22, 15, 23, 30, 37, 44, 51,

   58, 59, 52, 45, 38, 31, 39, 46, 53, 60, 61, 54, 47, 55, 62, 63

};

extern int UsedBits;      // for internal statistics, is adjusted by se_v, ue_v, u_1

extern ColocatedParams *Co_located;

extern int quant_intra_default[16];

extern int quant_inter_default[16];

extern int quant8_intra_default[64];

extern int quant8_inter_default[64];

seq_parameter_set_rbsp_t SeqParSet[MAXSPS];

pic_parameter_set_rbsp_t PicParSet[MAXPPS];

extern StorablePicture* dec_picture;

extern void init_frext(struct img_par *img);

// syntax for scaling list matrix values

void Scaling_List(int *scalingList, int sizeOfScalingList, Boolean *UseDefaultScalingMatrix, Bitstream *s)

{

  int j, scanj;

  int delta_scale, lastScale, nextScale;

  lastScale      = 8;

  nextScale      = 8;

  for(j=0; j<sizeOfScalingList; j++)

  {

    scanj = (sizeOfScalingList==16) ? ZZ_SCAN[j]:ZZ_SCAN8[j];

    if(nextScale!=0)

    {

      delta_scale = se_v (   "   : delta_sl   "                           , s);

      nextScale = (lastScale + delta_scale + 256) % 256;

      *UseDefaultScalingMatrix = (Boolean) (scanj==0 && nextScale==0);

    }

    scalingList[scanj] = (nextScale==0) ? lastScale:nextScale;

    lastScale = scalingList[scanj];

  }

}

// fill sps with content of p

int InterpretSPS (DataPartition *p, seq_parameter_set_rbsp_t *sps)

{

  unsigned i;

  int reserved_zero;

  Bitstream *s = p->bitstream;

  assert (p != NULL);

  assert (p->bitstream != NULL);

  assert (p->bitstream->streamBuffer != 0);

  assert (sps != NULL);

  UsedBits = 0;

  sps->profile_idc                            = u_v  (8, "SPS: profile_idc"                           , s);

  if ((sps->profile_idc!=66 ) &&

      (sps->profile_idc!=77 ) &&

      (sps->profile_idc!=88 ) &&

      (sps->profile_idc!=100 ) &&

      (sps->profile_idc!=110 ) &&

      (sps->profile_idc!=122 ) &&

      (sps->profile_idc!=144 ))

  {

    return UsedBits;

  }

  sps->constrained_set0_flag                  = u_1  (   "SPS: constrained_set0_flag"                 , s);

  sps->constrained_set1_flag                  = u_1  (   "SPS: constrained_set1_flag"                 , s);

  sps->constrained_set2_flag                  = u_1  (   "SPS: constrained_set2_flag"                 , s);

  sps->constrained_set3_flag                  = u_1  (   "SPS: constrained_set3_flag"                 , s);

  reserved_zero                               = u_v  (4, "SPS: reserved_zero_4bits"                   , s);

  assert (reserved_zero==0);

  sps->level_idc                              = u_v  (8, "SPS: level_idc"                             , s);

  sps->seq_parameter_set_id                   = ue_v ("SPS: seq_parameter_set_id"                     , s);

  // Fidelity Range Extensions stuff

  sps->chroma_format_idc = 1;

  sps->bit_depth_luma_minus8   = 0;

  sps->bit_depth_chroma_minus8 = 0;

  img->lossless_qpprime_flag   = 0;

  if((sps->profile_idc==FREXT_HP   ) ||

     (sps->profile_idc==FREXT_Hi10P) ||

     (sps->profile_idc==FREXT_Hi422) ||

     (sps->profile_idc==FREXT_Hi444))

  {

    sps->chroma_format_idc                      = ue_v ("SPS: chroma_format_idc"                       , s);

    // Residue Color Transform

    if(sps->chroma_format_idc == 3)

    {

      i                                         = u_1  ("SPS: residue_transform_flag"                  , s);

      if (i==1)

      {

        error ("[Deprecated High444 Profile] residue_transform_flag = 1 is no longer supported", 1000);

      }

    }

    sps->bit_depth_luma_minus8                  = ue_v ("SPS: bit_depth_luma_minus8"                   , s);

    sps->bit_depth_chroma_minus8                = ue_v ("SPS: bit_depth_chroma_minus8"                 , s);

    img->lossless_qpprime_flag                  = u_1  ("SPS: lossless_qpprime_y_zero_flag"            , s);

    sps->seq_scaling_matrix_present_flag        = u_1  (   "SPS: seq_scaling_matrix_present_flag"       , s);

    if(sps->seq_scaling_matrix_present_flag)

    {

      for(i=0; i<8; i++)

      {

        sps->seq_scaling_list_present_flag[i]   = u_1  (   "SPS: seq_scaling_list_present_flag"         , s);

        if(sps->seq_scaling_list_present_flag[i])

        {

          if(i<6)

            Scaling_List(sps->ScalingList4x4[i], 16, &sps->UseDefaultScalingMatrix4x4Flag[i], s);

          else

            Scaling_List(sps->ScalingList8x8[i-6], 64, &sps->UseDefaultScalingMatrix8x8Flag[i-6], s);

        }

      }

    }

  }

  sps->log2_max_frame_num_minus4              = ue_v ("SPS: log2_max_frame_num_minus4"                , s);

  sps->pic_order_cnt_type                     = ue_v ("SPS: pic_order_cnt_type"                       , s);

  if (sps->pic_order_cnt_type == 0)

    sps->log2_max_pic_order_cnt_lsb_minus4 = ue_v ("SPS: log2_max_pic_order_cnt_lsb_minus4"           , s);

  else if (sps->pic_order_cnt_type == 1)

  {

    sps->delta_pic_order_always_zero_flag      = u_1  ("SPS: delta_pic_order_always_zero_flag"       , s);

    sps->offset_for_non_ref_pic                = se_v ("SPS: offset_for_non_ref_pic"                 , s);

    sps->offset_for_top_to_bottom_field        = se_v ("SPS: offset_for_top_to_bottom_field"         , s);

    sps->num_ref_frames_in_pic_order_cnt_cycle = ue_v ("SPS: num_ref_frames_in_pic_order_cnt_cycle"  , s);

    for(i=0; i<sps->num_ref_frames_in_pic_order_cnt_cycle; i++)

      sps->offset_for_ref_frame[i]               = se_v ("SPS: offset_for_ref_frame[i]"              , s);

  }

  sps->num_ref_frames                        = ue_v ("SPS: num_ref_frames"                         , s);

  sps->gaps_in_frame_num_value_allowed_flag  = u_1  ("SPS: gaps_in_frame_num_value_allowed_flag"   , s);

  sps->pic_width_in_mbs_minus1               = ue_v ("SPS: pic_width_in_mbs_minus1"                , s);

  sps->pic_height_in_map_units_minus1        = ue_v ("SPS: pic_height_in_map_units_minus1"         , s);

  sps->frame_mbs_only_flag                   = u_1  ("SPS: frame_mbs_only_flag"                    , s);

  if (!sps->frame_mbs_only_flag)

  {

    sps->mb_adaptive_frame_field_flag        = u_1  ("SPS: mb_adaptive_frame_field_flag"           , s);

  }

  sps->direct_8x8_inference_flag             = u_1  ("SPS: direct_8x8_inference_flag"              , s);

  sps->frame_cropping_flag                   = u_1  ("SPS: frame_cropping_flag"                , s);

  if (sps->frame_cropping_flag)

  {

    sps->frame_cropping_rect_left_offset      = ue_v ("SPS: frame_cropping_rect_left_offset"           , s);

    sps->frame_cropping_rect_right_offset     = ue_v ("SPS: frame_cropping_rect_right_offset"          , s);

    sps->frame_cropping_rect_top_offset       = ue_v ("SPS: frame_cropping_rect_top_offset"            , s);

    sps->frame_cropping_rect_bottom_offset    = ue_v ("SPS: frame_cropping_rect_bottom_offset"         , s);

  }

  sps->vui_parameters_present_flag           = (Boolean) u_1  ("SPS: vui_parameters_present_flag"            , s);

  InitVUI(sps);

  ReadVUI(p, sps);

  sps->Valid = TRUE;

  return UsedBits;

}

void InitVUI(seq_parameter_set_rbsp_t *sps)

{

  sps->vui_seq_parameters.matrix_coefficients = 2;

}

int ReadVUI(DataPartition *p, seq_parameter_set_rbsp_t *sps)

{

  Bitstream *s = p->bitstream;

  if (sps->vui_parameters_present_flag)

  {

    sps->vui_seq_parameters.aspect_ratio_info_present_flag = u_1  ("VUI: aspect_ratio_info_present_flag"   , s);

    if (sps->vui_seq_parameters.aspect_ratio_info_present_flag)

    {

      sps->vui_seq_parameters.aspect_ratio_idc             = u_v  ( 8, "VUI: aspect_ratio_idc"              , s);

      if (255==sps->vui_seq_parameters.aspect_ratio_idc)

      {

        sps->vui_seq_parameters.sar_width                  = u_v  (16, "VUI: sar_width"                     , s);

        sps->vui_seq_parameters.sar_height                 = u_v  (16, "VUI: sar_height"                    , s);

      }

  }

    sps->vui_seq_parameters.overscan_info_present_flag     = u_1  ("VUI: overscan_info_present_flag"        , s);

    if (sps->vui_seq_parameters.overscan_info_present_flag)

    {

      sps->vui_seq_parameters.overscan_appropriate_flag    = u_1  ("VUI: overscan_appropriate_flag"         , s);

    }

    sps->vui_seq_parameters.video_signal_type_present_flag = u_1  ("VUI: video_signal_type_present_flag"    , s);

    if (sps->vui_seq_parameters.video_signal_type_present_flag)

    {

      sps->vui_seq_parameters.video_format                    = u_v  ( 3,"VUI: video_format"                      , s);

      sps->vui_seq_parameters.video_full_range_flag           = u_1  (   "VUI: video_full_range_flag"             , s);

      sps->vui_seq_parameters.colour_description_present_flag = u_1  (   "VUI: color_description_present_flag"    , s);

      if(sps->vui_seq_parameters.colour_description_present_flag)

      {

        sps->vui_seq_parameters.colour_primaries              = u_v  ( 8,"VUI: colour_primaries"                  , s);

        sps->vui_seq_parameters.transfer_characteristics      = u_v  ( 8,"VUI: transfer_characteristics"          , s);

        sps->vui_seq_parameters.matrix_coefficients           = u_v  ( 8,"VUI: matrix_coefficients"               , s);

      }

    }

    sps->vui_seq_parameters.chroma_location_info_present_flag = u_1  (   "VUI: chroma_loc_info_present_flag"      , s);

    if(sps->vui_seq_parameters.chroma_location_info_present_flag)

    {

      sps->vui_seq_parameters.chroma_sample_loc_type_top_field     = ue_v  ( "VUI: chroma_sample_loc_type_top_field"    , s);

      sps->vui_seq_parameters.chroma_sample_loc_type_bottom_field  = ue_v  ( "VUI: chroma_sample_loc_type_bottom_field" , s);

    }

    sps->vui_seq_parameters.timing_info_present_flag          = u_1  ("VUI: timing_info_present_flag"           , s);

    if (sps->vui_seq_parameters.timing_info_present_flag)

    {

      sps->vui_seq_parameters.num_units_in_tick               = u_v  (32,"VUI: num_units_in_tick"               , s);

      sps->vui_seq_parameters.time_scale                      = u_v  (32,"VUI: time_scale"                      , s);

      sps->vui_seq_parameters.fixed_frame_rate_flag           = u_1  (   "VUI: fixed_frame_rate_flag"           , s);

    }

    sps->vui_seq_parameters.nal_hrd_parameters_present_flag   = u_1  ("VUI: nal_hrd_parameters_present_flag"    , s);

    if (sps->vui_seq_parameters.nal_hrd_parameters_present_flag)

    {

      ReadHRDParameters(p, &(sps->vui_seq_parameters.nal_hrd_parameters));

    }

    sps->vui_seq_parameters.vcl_hrd_parameters_present_flag   = u_1  ("VUI: vcl_hrd_parameters_present_flag"    , s);

    if (sps->vui_seq_parameters.vcl_hrd_parameters_present_flag)

    {

      ReadHRDParameters(p, &(sps->vui_seq_parameters.vcl_hrd_parameters));

    }

    if (sps->vui_seq_parameters.nal_hrd_parameters_present_flag || sps->vui_seq_parameters.vcl_hrd_parameters_present_flag)

    {

      sps->vui_seq_parameters.low_delay_hrd_flag             =  u_1  ("VUI: low_delay_hrd_flag"                 , s);

    }

    sps->vui_seq_parameters.pic_struct_present_flag          =  u_1  ("VUI: pic_struct_present_flag   "         , s);

    sps->vui_seq_parameters.bitstream_restriction_flag       =  u_1  ("VUI: bitstream_restriction_flag"         , s);

    if (sps->vui_seq_parameters.bitstream_restriction_flag)

    {

      sps->vui_seq_parameters.motion_vectors_over_pic_boundaries_flag =  u_1  ("VUI: motion_vectors_over_pic_boundaries_flag", s);

      sps->vui_seq_parameters.max_bytes_per_pic_denom                 =  ue_v ("VUI: max_bytes_per_pic_denom"                , s);

      sps->vui_seq_parameters.max_bits_per_mb_denom                   =  ue_v ("VUI: max_bits_per_mb_denom"                  , s);

      sps->vui_seq_parameters.log2_max_mv_length_horizontal           =  ue_v ("VUI: log2_max_mv_length_horizontal"          , s);

      sps->vui_seq_parameters.log2_max_mv_length_vertical             =  ue_v ("VUI: log2_max_mv_length_vertical"            , s);

      sps->vui_seq_parameters.num_reorder_frames                      =  ue_v ("VUI: num_reorder_frames"                     , s);

      sps->vui_seq_parameters.max_dec_frame_buffering                 =  ue_v ("VUI: max_dec_frame_buffering"                , s);

    }

  }

  return 0;

}

int ReadHRDParameters(DataPartition *p, hrd_parameters_t *hrd)

{

  Bitstream *s = p->bitstream;

  unsigned int SchedSelIdx;

  hrd->cpb_cnt_minus1                                      = ue_v (   "VUI: cpb_cnt_minus1"                       , s);

  hrd->bit_rate_scale                                      = u_v  ( 4,"VUI: bit_rate_scale"                       , s);

  hrd->cpb_size_scale                                      = u_v  ( 4,"VUI: cpb_size_scale"                       , s);

  for( SchedSelIdx = 0; SchedSelIdx <= hrd->cpb_cnt_minus1; SchedSelIdx++ )

  {

    hrd->bit_rate_value_minus1[ SchedSelIdx ]             = ue_v  ( "VUI: bit_rate_value_minus1"                  , s);

    hrd->cpb_size_value_minus1[ SchedSelIdx ]             = ue_v  ( "VUI: cpb_size_value_minus1"                  , s);

    hrd->cbr_flag[ SchedSelIdx ]                          = u_1   ( "VUI: cbr_flag"                               , s);

  }

  hrd->initial_cpb_removal_delay_length_minus1            = u_v  ( 5,"VUI: initial_cpb_removal_delay_length_minus1" , s);

  hrd->cpb_removal_delay_length_minus1                    = u_v  ( 5,"VUI: cpb_removal_delay_length_minus1"         , s);

  hrd->dpb_output_delay_length_minus1                     = u_v  ( 5,"VUI: dpb_output_delay_length_minus1"          , s);

  hrd->time_offset_length                                 = u_v  ( 5,"VUI: time_offset_length"          , s);

  return 0;

}

int InterpretPPS (DataPartition *p, pic_parameter_set_rbsp_t *pps)

{

  unsigned i;

  int NumberBitsPerSliceGroupId;

  Bitstream *s = p->bitstream;

  assert (p != NULL);

  assert (p->bitstream != NULL);

  assert (p->bitstream->streamBuffer != 0);

  assert (pps != NULL);

  UsedBits = 0;

  pps->pic_parameter_set_id                  = ue_v ("PPS: pic_parameter_set_id"                   , s);

  pps->seq_parameter_set_id                  = ue_v ("PPS: seq_parameter_set_id"                   , s);

  pps->entropy_coding_mode_flag              = u_1  ("PPS: entropy_coding_mode_flag"               , s);

  //! Note: as per JVT-F078 the following bit is unconditional.  If F078 is not accepted, then

  //! one has to fetch the correct SPS to check whether the bit is present (hopefully there is

  //! no consistency problem :-(

  //! The current encoder code handles this in the same way.  When you change this, don't forget

  //! the encoder!  StW, 12/8/02

  pps->pic_order_present_flag                = u_1  ("PPS: pic_order_present_flag"                 , s);

  pps->num_slice_groups_minus1               = ue_v ("PPS: num_slice_groups_minus1"                , s);

  // FMO stuff begins here

  if (pps->num_slice_groups_minus1 > 0)

  {

    pps->slice_group_map_type               = ue_v ("PPS: slice_group_map_type"                , s);

    if (pps->slice_group_map_type == 0)

    {

      for (i=0; i<=pps->num_slice_groups_minus1; i++)

        pps->run_length_minus1 [i]                  = ue_v ("PPS: run_length_minus1 [i]"              , s);

    }

    else if (pps->slice_group_map_type == 2)

    {

      for (i=0; i<pps->num_slice_groups_minus1; i++)

      {

        //! JVT-F078: avoid reference of SPS by using ue(v) instead of u(v)

        pps->top_left [i]                          = ue_v ("PPS: top_left [i]"                        , s);

        pps->bottom_right [i]                      = ue_v ("PPS: bottom_right [i]"                    , s);

      }

    }

    else if (pps->slice_group_map_type == 3 ||

             pps->slice_group_map_type == 4 ||

             pps->slice_group_map_type == 5)

    {

      pps->slice_group_change_direction_flag     = u_1  ("PPS: slice_group_change_direction_flag"      , s);

      pps->slice_group_change_rate_minus1        = ue_v ("PPS: slice_group_change_rate_minus1"         , s);

    }

    else if (pps->slice_group_map_type == 6)

    {

      if (pps->num_slice_groups_minus1+1 >4)

        NumberBitsPerSliceGroupId = 3;

      else if (pps->num_slice_groups_minus1+1 > 2)

        NumberBitsPerSliceGroupId = 2;

      else

        NumberBitsPerSliceGroupId = 1;

      //! JVT-F078, exlicitly signal number of MBs in the map

      pps->num_slice_group_map_units_minus1      = ue_v ("PPS: num_slice_group_map_units_minus1"               , s);

      for (i=0; i<=pps->num_slice_group_map_units_minus1; i++)

        pps->slice_group_id[i] = u_v (NumberBitsPerSliceGroupId, "slice_group_id[i]", s);

    }

  }

  // End of FMO stuff

  pps->num_ref_idx_l0_active_minus1          = ue_v ("PPS: num_ref_idx_l0_active_minus1"           , s);

  pps->num_ref_idx_l1_active_minus1          = ue_v ("PPS: num_ref_idx_l1_active_minus1"           , s);

  pps->weighted_pred_flag                    = u_1  ("PPS: weighted_pred_flag"                     , s);

  pps->weighted_bipred_idc                   = u_v  ( 2, "PPS: weighted_bipred_idc"                , s);

  pps->pic_init_qp_minus26                   = se_v ("PPS: pic_init_qp_minus26"                    , s);

  pps->pic_init_qs_minus26                   = se_v ("PPS: pic_init_qs_minus26"                    , s);

  pps->chroma_qp_index_offset                = se_v ("PPS: chroma_qp_index_offset"                 , s);

  pps->deblocking_filter_control_present_flag = u_1 ("PPS: deblocking_filter_control_present_flag" , s);

  pps->constrained_intra_pred_flag           = u_1  ("PPS: constrained_intra_pred_flag"            , s);

  pps->redundant_pic_cnt_present_flag        = u_1  ("PPS: redundant_pic_cnt_present_flag"         , s);

  if(more_rbsp_data(s->streamBuffer, s->frame_bitoffset,s->bitstream_length)) // more_data_in_rbsp()

  {

    //Fidelity Range Extensions Stuff

    pps->transform_8x8_mode_flag           = u_1  ("PPS: transform_8x8_mode_flag"                , s);

    pps->pic_scaling_matrix_present_flag   =  u_1  ("PPS: pic_scaling_matrix_present_flag"        , s);

    if(pps->pic_scaling_matrix_present_flag)

    {

      for(i=0; i<(6+((unsigned)pps->transform_8x8_mode_flag<<1)); i++)

      {

        pps->pic_scaling_list_present_flag[i]= u_1  ("PPS: pic_scaling_list_present_flag"          , s);

        if(pps->pic_scaling_list_present_flag[i])

        {

          if(i<6)

            Scaling_List(pps->ScalingList4x4[i], 16, &pps->UseDefaultScalingMatrix4x4Flag[i], s);

          else

            Scaling_List(pps->ScalingList8x8[i-6], 64, &pps->UseDefaultScalingMatrix8x8Flag[i-6], s);

        }

      }

    }

    pps->second_chroma_qp_index_offset      = se_v ("PPS: second_chroma_qp_index_offset"          , s);

  }

  else

  {

    pps->second_chroma_qp_index_offset      = pps->chroma_qp_index_offset;

  }

  pps->Valid = TRUE;

  return UsedBits;

}

void PPSConsistencyCheck (pic_parameter_set_rbsp_t *pps)

{

  printf ("Consistency checking a picture parset, to be implemented\n");

//  if (pps->seq_parameter_set_id invalid then do something)

}

void SPSConsistencyCheck (seq_parameter_set_rbsp_t *sps)

{

  printf ("Consistency checking a sequence parset, to be implemented\n");

}

void MakePPSavailable (int id, pic_parameter_set_rbsp_t *pps)

{

  assert (pps->Valid == TRUE);

  if (PicParSet[id].Valid == TRUE && PicParSet[id].slice_group_id != NULL)

    free (PicParSet[id].slice_group_id);

  memcpy (&PicParSet[id], pps, sizeof (pic_parameter_set_rbsp_t));

  // we can simply use the memory provided with the pps. the PPS is destroyed after this function

  // call and will not try to free if pps->slice_group_id == NULL

  PicParSet[id].slice_group_id = pps->slice_group_id;

  pps->slice_group_id          = NULL;

}

void CleanUpPPS()

{

  int i;

  for (i=0; i<MAXPPS; i++)

  {

    if (PicParSet[i].Valid == TRUE && PicParSet[i].slice_group_id != NULL)

      free (PicParSet[i].slice_group_id);

    PicParSet[i].Valid = FALSE;

  }

}

void MakeSPSavailable (int id, seq_parameter_set_rbsp_t *sps)

{

  assert (sps->Valid == TRUE);

  memcpy (&SeqParSet[id], sps, sizeof (seq_parameter_set_rbsp_t));

}

void ProcessSPS (NALU_t *nalu)

{

  DataPartition *dp = AllocPartition(1);

  seq_parameter_set_rbsp_t *sps = AllocSPS();

  int dummy;

  memcpy (dp->bitstream->streamBuffer, &nalu->buf[1], nalu->len-1);

  dp->bitstream->code_len = dp->bitstream->bitstream_length = RBSPtoSODB (dp->bitstream->streamBuffer, nalu->len-1);

  dp->bitstream->ei_flag = 0;

  dp->bitstream->read_len = dp->bitstream->frame_bitoffset = 0;

  dummy = InterpretSPS (dp, sps);

  if (sps->Valid)

  {

    if (active_sps)

    {

      if (sps->seq_parameter_set_id == active_sps->seq_parameter_set_id)

      {

        if (!sps_is_equal(sps, active_sps))

        {

          if (dec_picture)

          {

            // this may only happen on slice loss

            exit_picture();

          }

          active_sps=NULL;

        }

      }

    }

    // SPSConsistencyCheck (pps);

    MakeSPSavailable (sps->seq_parameter_set_id, sps);

    img->profile_idc = sps->profile_idc; //ADD-VG

  }

  FreePartition (dp, 1);

  FreeSPS (sps);

}

void ProcessPPS (NALU_t *nalu)

{

  DataPartition *dp;

  pic_parameter_set_rbsp_t *pps;

  int dummy;

  dp = AllocPartition(1);

  pps = AllocPPS();

  memcpy (dp->bitstream->streamBuffer, &nalu->buf[1], nalu->len-1);

  dp->bitstream->code_len = dp->bitstream->bitstream_length = RBSPtoSODB (dp->bitstream->streamBuffer, nalu->len-1);

  dp->bitstream->ei_flag = 0;

  dp->bitstream->read_len = dp->bitstream->frame_bitoffset = 0;

  dummy = InterpretPPS (dp, pps);

  // PPSConsistencyCheck (pps);

  if (active_pps)

  {

    if (pps->pic_parameter_set_id == active_pps->pic_parameter_set_id)

    {

      if (!pps_is_equal(pps, active_pps))

      {

        if (dec_picture)

        {

          // this may only happen on slice loss

          exit_picture();

        }

        active_pps = NULL;

      }

    }

  }

  MakePPSavailable (pps->pic_parameter_set_id, pps);

  FreePartition (dp, 1);

  FreePPS (pps);

}

void activate_sps (seq_parameter_set_rbsp_t *sps)

{

  if (active_sps != sps)

  {

    if (dec_picture)

    {

      // this may only happen on slice loss

      exit_picture();

    }

    active_sps = sps;

    img->bitdepth_chroma = 0;

    img->width_cr        = 0;

    img->height_cr       = 0;

    // Fidelity Range Extensions stuff (part 1)

    img->bitdepth_luma   = sps->bit_depth_luma_minus8 + 8;

    if (sps->chroma_format_idc != YUV400)

      img->bitdepth_chroma = sps->bit_depth_chroma_minus8 + 8;

    img->MaxFrameNum = 1<<(sps->log2_max_frame_num_minus4+4);

    img->PicWidthInMbs = (sps->pic_width_in_mbs_minus1 +1);

    img->PicHeightInMapUnits = (sps->pic_height_in_map_units_minus1 +1);

    img->FrameHeightInMbs = ( 2 - sps->frame_mbs_only_flag ) * img->PicHeightInMapUnits;

    img->FrameSizeInMbs = img->PicWidthInMbs * img->FrameHeightInMbs;

    img->yuv_format=sps->chroma_format_idc;

    img->width = img->PicWidthInMbs * MB_BLOCK_SIZE;

    img->height = img->FrameHeightInMbs * MB_BLOCK_SIZE;

    if (sps->chroma_format_idc == YUV420)

    {

      img->width_cr = img->width >>1;

      img->height_cr = img->height >>1;

    }

    else if (sps->chroma_format_idc == YUV422)

    {

      img->width_cr = img->width >>1;