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//==========================================================================
//
// protocol.h
//
// Data common to host and target.
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 2008 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later
// version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//###DESCRIPTIONBEGIN####
//
// Author(s): bartv
// Date: 2005-10-28
//
//###DESCRIPTIONEND####
//========================================================================
// These requests are sent by eCos to the I/O auxiliary and the
// framebuf.tcl script.
//
// Protocol version number
#define SYNTH_FB_PROTOCOL_VERSION 0x01
// Initialize, getting back various file names.
#define SYNTH_FB_INIT 0x01
// Abort, failed to open the file names
#define SYNTH_FB_ABORT 0x02
// Switch a device back on.
#define SYNTH_FB_ON 0x03
// Or off
#define SYNTH_FB_OFF 0x04
// These requests are sent by eCos to the host-side framebuf program
// to indicate what has changed.
//
// All connected
#define SYNTH_FB_OK 0x01
// A double buffer synch.
#define SYNTH_FB_SYNC 0x02
// Palette change, redraw the lot
#define SYNTH_FB_WRITE_PALETTE 0x03
// Blank or unblank the screen
#define SYNTH_FB_BLANK 0x04
// Move the viewport
#define SYNTH_FB_VIEWPORT 0x05
// Page flipping
#define SYNTH_FB_PAGE_FLIP 0x06
// These requests go from the framebuf.tcl script to the framebuf
// program.
typedef struct synth_fb_auxiliary_request {
unsigned int command;
unsigned int arg1;
unsigned int arg2;
} synth_fb_auxiliary_request;
// This is sent when the frame becomes visible. It is followed
// by a 32-bit windows id.
#define SYNTH_FB_AUX_MAPPED 0x01
// ON, processed by auxiliary and then passed on to framebuf
#define SYNTH_FB_AUX_ON 0x02
// OFF, processed by auxiliary and then passed on to framebuf
#define SYNTH_FB_AUX_OFF 0x03
// Refresh, sent by the auxiliary a second after mapping.
#define SYNTH_FB_AUX_REDRAW 0x04
// This data structure is in the shared memory region.
typedef struct synth_fb_data {
// Do we have a connection to a host-side framebuf program to do
// the drawing?
int connected;
// Named fifo between framebuf and the synthetic target.
int fifo_to_framebuf;
int fifo_from_framebuf;
// The device id for the auxiliary
int devid;
// The bounding box for syncs.
int sync_x0;
int sync_y0;
int sync_x1;
int sync_y1;
// Is the display on?
int display_on;
// Current blank state
int blank_on;
// Current viewport position, top left
int viewport_x;
int viewport_y;
// Current page for page flipping
int page_visible;
int page_drawable;
// The palette, if used.
unsigned char palette[3 * 256];
// The framebuffer data follows.
unsigned int framebuf[1];
} synth_fb_data;
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