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Name

rle_op - Data structure for raw run-length encoded image data.

Synopsis

#include <rle.h>
#include <rle_raw.h>
typedef struct rle_op rle_op;

Description

The rle_op data structure is used to describe a single run of data in a RLE(5) run-length encoded image. It is filled by the function rle_getraw(3) , and is used by the functions rle_putraw(3) and rle_rawtorow(3) .

The structure is 

    struct rle_op {
    int    opcode;    /* One of RByteDataOp or RRunDataOp. */
    int    xloc;    /* X starting location of this data. */
    int    length;    /* Length of run or data array. */
    union {
        rle_pixel    *pixels;    /* ByteData case. */
        int    run_val;    /* RunData case. */
    } u;
     };

If the opcode has the value RByteDataOp, then the u.pixels component points to an array of length pixel values. If the opcode has the value RRunDataOp, then the u.run_val component contains a pixel value that is to be repeated length times.

See Also

rle_hdr(3) , rle_getraw(3) , rle_putraw(3) , rle_rawtorow(3) , librle(3) , RLE(5) .

Author

Spencer W. Thomas

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