FCVG_CUR(3X) — NEWS-OS Programmer’s Manual

NAME

fcvg_cur_r, fcvg_cur_w, fcvg_cur_move, fcvg_cur_pos − functions for cursor plane of the FCVG device

SYNOPSIS

#include <fcvg.h>

intfcvg_cur_r(cur)
unsigned char cur[FCVG_MAX_CUR_X][FCVG_MAX_CUR_Y];

intfcvg_cur_w(cur)
unsigned char cur[FCVG_MAX_CUR_X][FCVG_MAX_CUR_Y];

intfcvg_cur_move(x, y)
intx, y;

intfcvg_cur_pos(x, y)
intx, y;

DESCRIPTION

These functions operate on the cursor plane of the FCVG device.

fcvg_cur_r
Reads a contents of the cursor plane to the array cur.

fcvg_cur_w
Writes a content of the array cur to the cursor plane. The coordinates of the cursor planes are expressed as follows:

Upper leftcur[0][0]
Upper rightcur[FCVG_MAX_CUR_X − 1][0]
Bottom leftcur[0][FCVG_MAX_CUR_Y − 1]
Bottom rightcur[FCVG_MAX_CUR_X − 1][FCVG_MAX_CUR_Y − 1]

fcvg_cur_move
Moves the cursor so that the upper left position of the cursor plane (64 x 64) meets the pixel specified with x and y.

fcvg_cur_pos
Sets the current upper left coordinate of the cursor plane to x and y.

The ranges of cur, x and y are shown below:

0 ≤ cur[][] ≤ 15
−64 ≤ x ≤ 1023
−64 ≤ y ≤ 511

Values outside of this range cannot be specified.

RESTRICTIONS

fcvg_cur_move moves a cursor with SCRSTP bit of status register. Therefore, when fcvg_cur_move is used continuously, a cursor may not be moved smoothly. When it is so, it is recommended to call fcvg_cur_move with some intervals.

FILES

/usr/src/sony/lib/libfcvg/∗ director for the source code of the library

/usr/sony/demo/NWB224 directory for a sample program

/usr/sony/lib/libfcvg.a FCVG library

/usr/sony/include/fcvg.h header file

/usr/sony/include/fcvg_lib.h header file

/usr/sony/include/fcvg_reg.h header file

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