func: static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
  
  {
  
      int v;
  
      int i = 0;
  
      uint8_t state[CONTEXT_SIZE];
  
  
  
      memset(state, 128, sizeof(state));
  
  
  
      for (v = 0; i < 128; v++) {
  
          unsigned len = get_symbol(c, state, 0) + 1;
  
  
  
          if (len > 128 - i)
  
              return AVERROR_INVALIDDATA;
  
  
  
          while (len--) {
  
              quant_table[i] = scale * v;
  
              i++;
  
          }
  
      }
  
  
  
      for (i = 1; i < 128; i++)
  
          quant_table[256 - i] = -quant_table[i];
  
      quant_table[128] = -quant_table[127];
  
  
  
      return 2 * v - 1;
  
  }
  