diff options
Diffstat (limited to 'encoder.cc')
| -rw-r--r-- | encoder.cc | 39 |
1 files changed, 37 insertions, 2 deletions
@@ -43,6 +43,41 @@ bool Matchfinder::read_block() throw() } +Matchfinder::Matchfinder( const int dict_size, const int len_limit, + const int ides ) + : + partial_data_pos( 0 ), + pos( 0 ), + cyclic_pos( 0 ), + stream_pos( 0 ), + ides_( ides ), + match_len_limit_( len_limit ), + prev_positions( new int32_t[num_prev_positions] ), + at_stream_end( false ) + { + const int buffer_size_limit = ( 2 * dict_size ) + + max_num_trials + max_match_len; + buffer_size = std::max( 65536, dict_size ); + buffer = (uint8_t *)std::malloc( buffer_size ); + if( !buffer ) throw std::bad_alloc(); + if( !read_block() ) throw Error( "read error" ); + if( !at_stream_end && buffer_size < buffer_size_limit ) + { + buffer_size = buffer_size_limit; + buffer = (uint8_t *)std::realloc( buffer, buffer_size ); + if( !buffer ) throw std::bad_alloc(); + if( !read_block() ) throw Error( "read error" ); + } + if( at_stream_end && stream_pos < dict_size ) + dictionary_size_ = std::max( min_dictionary_size, stream_pos ); + else dictionary_size_ = dict_size; + pos_limit = buffer_size; + if( !at_stream_end ) pos_limit -= max_match_len; + prev_pos_tree = new int32_t[2*dictionary_size_]; + for( int i = 0; i < num_prev_positions; ++i ) prev_positions[i] = -1; + } + + bool Matchfinder::reset() throw() { const int size = stream_pos - pos; @@ -433,7 +468,7 @@ void LZ_encoder::flush( const State & state ) trailer.data_size( matchfinder.data_position() ); trailer.member_size( range_encoder.member_position() + sizeof trailer ); for( unsigned int i = 0; i < sizeof trailer; ++i ) - range_encoder.put_byte( (( uint8_t *)&trailer)[i] ); + range_encoder.put_byte( ((uint8_t *)&trailer)[i] ); range_encoder.flush_data(); } @@ -453,7 +488,7 @@ LZ_encoder::LZ_encoder( Matchfinder & mf, const File_header & header, fill_align_prices(); for( unsigned int i = 0; i < sizeof header; ++i ) - range_encoder.put_byte( (( uint8_t *)&header)[i] ); + range_encoder.put_byte( ((uint8_t *)&header)[i] ); } |