claw::graphic::pcx::reader::rle_pcx_decoder Class Reference

RLE decoder for pcx RLE format. More...

Inheritance diagram for claw::graphic::pcx::reader::rle_pcx_decoder:

List of all members.

Private Member Functions
virtual void	read_mode (input_buffer_type &input, output_buffer_type &output)
	Get the type of the following data in the input buffer.

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Detailed Description

RLE decoder for pcx RLE format.

Definition at line 195 of file pcx.hpp.

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Member Function Documentation

void claw::graphic::pcx::reader::rle_pcx_decoder::read_mode	(	input_buffer_type &	input,
		output_buffer_type &	output
	)		[private, virtual]

Get the type of the following data in the input buffer.

Parameters:

input	The input stream (the pcx file).
output	The output stream (the pcx image).

Definition at line 230 of file pcx_reader.cpp.

{
  this->m_mode = this->stop;
  bool ok = !output.completed();

  if ( ok && (input.remaining() < 1) )
    ok = input.read_more(1);

  if (ok)
    {
      unsigned char key = input.get_next();
      this->m_mode = this->compressed;
      
      if ( (key & 0xC0) == 0xC0 )
        {
          this->m_count = key & 0x3F;

          if ( input.remaining() < 1 )
            input.read_more(1);

          this->m_pattern = input.get_next();
        }
      else
        {
          this->m_count = 1;
          this->m_pattern = key;
        }
    }
} // pcx::reader::rle_pcx_decoder::read_mode()

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The documentation for this class was generated from the following files:

• pcx.hpp
• code/pcx_reader.cpp