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Annotation of researchv10dc/man/adm/man9/flickfile.9, revision 1.1.1.1

1.1       root        1: .TH FLICKFILE 9.5
                      2: .CT 1 comm_term
                      3: .SH NAME
                      4: movies \- graphics movie file formats
                      5: .SH DESCRIPTION
                      6: Movie files are generated by
                      7: .I preflicks
                      8: and used by
                      9: .IR fflicks ;
                     10: see
                     11: .IR flicks (9.1).
                     12: The format of a movie files is:
                     13: .IP
                     14: .EX
                     15: struct Header {
                     16:        unsigned char version;
                     17:        short header_length;
                     18:        short nr_frames;
                     19:        unsigned char nr_tables;
                     20:        struct LOOKUP_TABLE {
                     21:                short number_of_entries;
                     22:                struct {
                     23:                        short count;
                     24:                        unsigned char value;
                     25:                } table[256];
                     26:        } Table[nr_tables];
                     27: };
                     28: struct Frame {
                     29:        short width, height;
                     30:        short compacted_length;
                     31:        unsigned char which_table;
                     32:        unsigned char data[compacted_length];
                     33: } Frame[nr_frames];
                     34: .EE
                     35: Each
                     36: .B short
                     37: in the above structure is present as a two-byte number in the
                     38: file, most significant byte first.
                     39: Each
                     40: .B "unsigned char"
                     41: is a single byte.
                     42: .TP
                     43: .B version
                     44: software version number, to
                     45: ensure compatibility between producer and consumer
                     46: of the file.
                     47: .PD0
                     48: .TP
                     49: .B header_length
                     50: total length in bytes of the lookup table(s)
                     51: used to encode the file plus three bytes (the next three that follow).
                     52: .TP
                     53: .B nr_frames
                     54: total number of movie frames in the file.
                     55: .TP
                     56: .B nr_tables
                     57: number of lookup tables.
                     58: .TP
                     59: .B nr_entries
                     60: number of entries in the lookup table (maximum 256).
                     61: .TP
                     62: .B count
                     63: .B value
                     64: pixel value and a count of
                     65: how many times that value is to be repeated.
                     66: .PD
                     67: .PP
                     68: Immediately following the lookup tables begin the frames
                     69: encoded in an indirect run-length code.
                     70: Each frame is described by
                     71: .BR width ,
                     72: .BR height ,
                     73: and the
                     74: .B compacted_length
                     75: of the frame in bytes.
                     76: The frame is coded in raster-scan order
                     77: as a sequence of indexes into
                     78: the table numbered
                     79: .BR which_table
                     80: (counting from 0).
                     81: .SH FILES
                     82: _movie
                     83: .SH "SEE ALSO"
                     84: .IR flicks (9.1), 
                     85: .IR pico (1), 
                     86: .IR rebecca (9.1)

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