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//============================================================================
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//
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// framebuf.c
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//
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// A utility program to perform low-level ethernet operations
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//
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//============================================================================
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// ####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 2008 Free Software Foundation, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later
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// version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with eCos; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// As a special exception, if other files instantiate templates or use
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// macros or inline functions from this file, or you compile this file
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// and link it with other works to produce a work based on this file,
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// this file does not by itself cause the resulting work to be covered by
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// the GNU General Public License. However the source code for this file
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// must still be made available in accordance with section (3) of the GNU
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// General Public License v2.
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//
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// This exception does not invalidate any other reasons why a work based
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// on this file might be covered by the GNU General Public License.
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// -------------------------------------------
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// ####ECOSGPLCOPYRIGHTEND####
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//============================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s): bartv
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// Contact(s): bartv
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// Date: 2005/10/28
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// Version: 0.01
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// Description:
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// Implementation of a framebuffer device. This script should only ever
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// be run from inside the ecosynth auxiliary.
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//
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// This program is fork'ed by the framebuf.tcl script running inside
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// the synthetic target auxiliary. It is responsible for performing the
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// low-level framebuffer accesses.
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//
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//####DESCRIPTIONEND####
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//============================================================================
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// We want to instantiate multiple conversion routines for the different
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// graphics formats, with extensive use of macros for efficiences. Multiple
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// C #include's are used for this.
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#ifndef RENDERFN
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# include <stdio.h>
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# include <stdarg.h>
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# include <stdlib.h>
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# include <string.h>
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# include <time.h>
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# include <signal.h>
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# include <limits.h>
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# include <unistd.h>
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# include <fcntl.h>
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# include <errno.h>
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# include <sys/param.h>
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# include <sys/types.h>
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# include <sys/stat.h>
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# include <sys/socket.h>
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# include <sys/ioctl.h>
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# include <sys/mman.h>
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# include <X11/Xlib.h>
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// The protocol between host and target is defined by a private
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// target-side header.
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# include "../src/protocol.h"
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// ----------------------------------------------------------------------------
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// Globals
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// First the variables needed for X operations. The window is created by
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// Tcl/Tk code and its id is supplied as an argument.
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static Display* host_display;
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static Window host_win = 0;
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static GC host_gc;
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static XImage* host_image;
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// R, G & B shifts for the host-side. Used for palette conversion.
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static int host_r_shift;
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static int host_g_shift;
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static int host_b_shift;
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// The image data. Only 32bpp is supported.
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// NOTE: this is not 64-bit clean.
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static unsigned int* img_fb;
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// This is used for display depths up to and including 16bpp -
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// 256K of static data is irrelevant for a Linux host-side app.
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// 32bpp will have to be handled differently.
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static unsigned int host_palette[65536];
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// The current function for rendering target-side data
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static void (*render_fn)(int, int, int, int);
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// And palette init and update functions.
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static void (*palette_init_fn)(void);
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static void (*palette_update_fn)(void);
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// Positions. With target-side viewports, magnification, and the
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// possibility of windows being resized, this can
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// get very messy.
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//
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// The target-side framebuffer consists of n pages, each of
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// width*height pixels, plus possibly padding at the end of each
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// scanline.
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//
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// img_fb consists of viewport_width*viewport_height pixels.
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// At magnification 1 each pixel is a 32-bit unsigned int, but
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// at higher magnification each pixel takes up mag^2 unsigned
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// ints.
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//
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// win_width and win_height determine the current window dimensions in
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// target pixel units, i.e. ignoring magnification. x_win_width
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// and x_win_height are the same dimensions in X pixels, so
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// mag*win_width. These dimensions are provided by X configure events.
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// They may be smaller, the same size, or larger than the viewport.
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//
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// A coordinate (target_x,target_y) within the current page
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// corresponds to (target_x - viewport_x, target_y - viewport_y).
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// within host_image and within the window.
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//
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// For an X expose event we get X windows coordinates.
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// The actually visible window dimensions. If the Tk window gets
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// resized then only part of the image data may be visible. These
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// variables change in response to X configure events.
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static int win_width;
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static int win_height;
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static int x_win_width;
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static int x_win_height;
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// Target-side framebuffer.
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//
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// The synth_fb_data structure at the start of the shared memory region.
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static synth_fb_data* shared_fb_data;
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// The target-side framebuffer starts at shared_fb_data->framebuf[0].
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// However that is not necessarily where the visible data starts
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// because of page flipping and viewport support. This always points
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// at the top-left corner of visible data.
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static void* target_fb;
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// Parameters supplied by the target.
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static int target_id;
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static int target_depth;
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static int target_le;
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static int target_width;
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static int target_height;
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static int target_viewport_width;
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static int target_viewport_height;
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static int target_stride;
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static int target_number_pages;
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static char* target_format;
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// Parameters supplied by a host-side configuration file
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static int config_magnification;
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// Communication between host and target happens partially through the
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// shared memory region and partially through a fifo, the latter
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// allowing for select(). shared_fb_data already points at the shared
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// memory region.
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static char shm_name[L_tmpnam];
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static int shm_created;
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static int shm_fd;
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static char fifo_t2h_name[L_tmpnam];
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static int fifo_t2h_created;
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static int fifo_t2h_fd;
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static char fifo_h2t_name[L_tmpnam];
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static int fifo_h2t_created;
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static int fifo_h2t_fd;
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// An atexit() handler for cleaning up the fifos and shared memory.
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static void
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atexit_handler(void)
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{
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if (shm_created) {
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unlink(shm_name);
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}
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if (fifo_t2h_created) {
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unlink(fifo_t2h_name);
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}
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if (fifo_h2t_created) {
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unlink(fifo_h2t_name);
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}
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}
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// ----------------------------------------------------------------------------
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// Diagnostics. Warnings and errors are sent up to the I/O auxiliary for
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// display there. Debug output goes straight to stderr
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// Set the DEBUG_LEVEL to 0 for no debugging, 3 for maximum debugging.
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#define DEBUG_LEVEL 0
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#define DEBUG(_level_, _str_, ...) \
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if (_level_ <= DEBUG_LEVEL) { \
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fprintf(stderr, "%d: " _str_, target_id, ## __VA_ARGS__); \
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}
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#if 0
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static void
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warn(char* fmt, ...)
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{
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char buf[512];
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va_list args;
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va_start(args, fmt);
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sprintf(buf, "Warning (fb%d) : ", target_id);
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vsnprintf(buf + strlen(buf), 512 - strlen(buf), fmt, args);
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buf[511] = '\0';
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(void) write(1, buf, strlen(buf));
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}
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#endif
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static void
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error(char* fmt, ...)
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{
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char buf[512];
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va_list args;
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va_start(args, fmt);
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sprintf(buf, "Error (fb%d) : ", target_id);
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vsnprintf(buf + strlen(buf), 512 - strlen(buf), fmt, args);
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buf[511] = '\0';
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(void) write(1, buf, strlen(buf));
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exit(1);
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}
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// ----------------------------------------------------------------------------
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// Host-side.
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//
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// The main redraw routines. schedule_redraw() can get called as a result of:
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//
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// 1) an X expose event.
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// 2) a message from the Tk code affecting the on/off setting of
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// the framebuffer.
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// 3) a message from the target-side code indicating some of the
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// target-side data has changed, or some other event such as
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// viewport repositioning or page flipping.
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//
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// It just maintains a bounding box. do_redraw() does the real work and
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// is called from inside the main loop.
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static int redraw_pending = 0;
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static int x_redraw_x, x_redraw_y, x_redraw_width, x_redraw_height;
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static void
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do_redraw(void)
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{
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while (redraw_pending) {
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redraw_pending = 0;
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DEBUG(3, "do_redraw: win_x %d, win_y %d, width %d, height %d\n", x_redraw_x, x_redraw_y, x_redraw_width, x_redraw_height);
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XPutImage(host_display, host_win, host_gc, host_image, x_redraw_x, x_redraw_y, x_redraw_x, x_redraw_y, x_redraw_width, x_redraw_height);
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XFlush(host_display);
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}
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}
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static void
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schedule_redraw(int x_new_x, int x_new_y, int x_new_width, int x_new_height)
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274 |
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{
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275 |
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if (! redraw_pending) {
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redraw_pending = 1;
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x_redraw_x = x_new_x;
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x_redraw_y = x_new_y;
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x_redraw_width = x_new_width;
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x_redraw_height = x_new_height;
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} else {
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282 |
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if (x_redraw_x > x_new_x) {
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283 |
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x_redraw_x = x_new_x;
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284 |
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} else {
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285 |
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x_new_width += (x_new_x - x_redraw_x);
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}
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287 |
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if (x_redraw_y > x_new_y) {
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288 |
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x_redraw_y = x_new_y;
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289 |
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} else {
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290 |
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x_new_height += (x_new_y - x_redraw_y);
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291 |
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}
|
292 |
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if (x_new_width > x_redraw_width) {
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293 |
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x_redraw_width = x_new_width;
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294 |
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}
|
295 |
|
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if (x_new_height > x_redraw_height) {
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296 |
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x_redraw_height = x_new_height;
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297 |
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}
|
298 |
|
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}
|
299 |
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}
|
300 |
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|
301 |
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// ----------------------------------------------------------------------------
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302 |
|
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// Utility for blanking the screen
|
303 |
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static void
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304 |
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blackout(void)
|
305 |
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{
|
306 |
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memset(img_fb, 0, target_viewport_width * target_viewport_height * sizeof(int) * config_magnification * config_magnification);
|
307 |
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if (0 != host_win) {
|
308 |
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schedule_redraw(0, 0, x_win_width, x_win_height);
|
309 |
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}
|
310 |
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}
|
311 |
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|
312 |
|
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// ----------------------------------------------------------------------------
|
313 |
|
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// This function gets called when the main select() indicates the
|
314 |
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// X server is trying to send some data.
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315 |
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static void
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316 |
|
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handle_X_event(void)
|
317 |
|
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{
|
318 |
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XEvent event;
|
319 |
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|
320 |
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XNextEvent(host_display, &event);
|
321 |
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switch(event.type) {
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322 |
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case Expose:
|
323 |
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{
|
324 |
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// In theory this code should be able to do partial redraws for every
|
325 |
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// expose event, but that does not seem to work reliably. Instead do a
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326 |
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// full redraw, but only for the final event in a sequence.
|
327 |
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if (0 == event.xexpose.count) {
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328 |
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DEBUG(3, "X expose event, x %d, y %d, width %d, height %d\n",
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event.xexpose.x, event.xexpose.y, event.xexpose.width, event.xexpose.height);
|
330 |
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schedule_redraw(0, 0, x_win_width, x_win_height);
|
331 |
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}
|
332 |
|
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break;
|
333 |
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}
|
334 |
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|
335 |
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case ConfigureNotify:
|
336 |
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{
|
337 |
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DEBUG(2, "X configure notify event, width %d, height %d\n", event.xconfigure.width, event.xconfigure.height);
|
338 |
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x_win_width = event.xconfigure.width;
|
339 |
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x_win_height = event.xconfigure.height;
|
340 |
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win_width = (x_win_width + config_magnification - 1) / config_magnification;
|
341 |
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win_height = (x_win_height + config_magnification - 1) / config_magnification;
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342 |
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|
343 |
|
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if (shared_fb_data->display_on && shared_fb_data->blank_on) {
|
344 |
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(*render_fn)(0 + shared_fb_data->viewport_x, 0 + shared_fb_data->viewport_y, win_width, win_height);
|
345 |
|
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} else {
|
346 |
|
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blackout();
|
347 |
|
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}
|
348 |
|
|
break;
|
349 |
|
|
}
|
350 |
|
|
}
|
351 |
|
|
}
|
352 |
|
|
|
353 |
|
|
// ----------------------------------------------------------------------------
|
354 |
|
|
// Conversion routines
|
355 |
|
|
|
356 |
|
|
// This dummy function is installed to handle draw requests before the
|
357 |
|
|
// window is mapped - until that time the exact render function is unknown.
|
358 |
|
|
static void
|
359 |
|
|
dummy_render_fn(int target_x, int target_y, int width, int height)
|
360 |
|
|
{
|
361 |
|
|
DEBUG(2, "rendering: target_x %d, target_y %d, width %d, height %d\n", target_x, target_y, width, height);
|
362 |
|
|
DEBUG(2, " : window has not been mapped on to the display yet\n");
|
363 |
|
|
}
|
364 |
|
|
#else // RENDERFN
|
365 |
|
|
|
366 |
|
|
// These functions get instantiated N times for the N different
|
367 |
|
|
// graphics formats. We need to take the target-side region defined by
|
368 |
|
|
// x/y/width/height, render it into the image data, and then redraw
|
369 |
|
|
// the relevant part of the image data. There is no point rendering more
|
370 |
|
|
// data than is visible.
|
371 |
|
|
|
372 |
|
|
static void
|
373 |
|
|
RENDERFN(1, TARGET_FORMAT)(int target_x, int target_y, int width, int height)
|
374 |
|
|
{
|
375 |
|
|
int x, y;
|
376 |
|
|
int win_x, win_y;
|
377 |
|
|
unsigned int* img_data;
|
378 |
|
|
unsigned int colour;
|
379 |
|
|
TARGET_DATA;
|
380 |
|
|
|
381 |
|
|
DEBUG(2, "rendering: target_x %d, target_y %d, width %d, height %d\n", target_x, target_y, width, height);
|
382 |
|
|
if ((0 == host_win) || !shared_fb_data->display_on || !shared_fb_data->blank_on) {
|
383 |
|
|
DEBUG(2, " : no-op, host_win %d, display_on %d, blank_on %d\n", (int)host_win, shared_fb_data->display_on, shared_fb_data->blank_on);
|
384 |
|
|
return;
|
385 |
|
|
}
|
386 |
|
|
DEBUG(2, " : current viewport x %d, y %d\n", shared_fb_data->viewport_x, shared_fb_data->viewport_y);
|
387 |
|
|
|
388 |
|
|
win_x = target_x - shared_fb_data->viewport_x;
|
389 |
|
|
win_y = target_y - shared_fb_data->viewport_y;
|
390 |
|
|
if (win_x < 0) {
|
391 |
|
|
width += win_x;
|
392 |
|
|
win_x = 0;
|
393 |
|
|
}
|
394 |
|
|
if (win_y < 0) {
|
395 |
|
|
height += win_y;
|
396 |
|
|
win_y = 0;
|
397 |
|
|
}
|
398 |
|
|
if ((win_x + width) > win_width) {
|
399 |
|
|
width = win_width - win_x;
|
400 |
|
|
}
|
401 |
|
|
if ((win_y + height) > win_height) {
|
402 |
|
|
height = win_height - win_y;
|
403 |
|
|
}
|
404 |
|
|
DEBUG(2, " : after clipping, win_x %d, win_y %d, width %d, height %d\n", win_x, win_y, width, height);
|
405 |
|
|
if ((width < 0) || (height < 0)) {
|
406 |
|
|
return;
|
407 |
|
|
}
|
408 |
|
|
|
409 |
|
|
img_data = img_fb + (win_y * target_viewport_width) + win_x;
|
410 |
|
|
for (y = 0; y < height; y++) {
|
411 |
|
|
for (x = 0; x < width; x++) {
|
412 |
|
|
colour = TARGET_NEXT_COLOUR();
|
413 |
|
|
*img_data++ = colour;
|
414 |
|
|
}
|
415 |
|
|
img_data += (target_viewport_width - width);
|
416 |
|
|
TARGET_NEXT_LINE();
|
417 |
|
|
}
|
418 |
|
|
schedule_redraw(win_x, win_y, width, height);
|
419 |
|
|
}
|
420 |
|
|
|
421 |
|
|
static void
|
422 |
|
|
RENDERFN(2, TARGET_FORMAT)(int target_x, int target_y, int width, int height)
|
423 |
|
|
{
|
424 |
|
|
int x, y;
|
425 |
|
|
int win_x, win_y;
|
426 |
|
|
unsigned int* img_data0;
|
427 |
|
|
unsigned int* img_data1;
|
428 |
|
|
unsigned int colour;
|
429 |
|
|
TARGET_DATA;
|
430 |
|
|
|
431 |
|
|
DEBUG(2, "rendering: target_x %d, target_y %d, width %d, height %d\n", target_x, target_y, width, height);
|
432 |
|
|
if ((0 == host_win) || !shared_fb_data->display_on || !shared_fb_data->blank_on) {
|
433 |
|
|
DEBUG(2, " : no-op, host_win %d, display_on %d, blank_on %d\n", (int)host_win, shared_fb_data->display_on, shared_fb_data->blank_on);
|
434 |
|
|
return;
|
435 |
|
|
}
|
436 |
|
|
DEBUG(2, " : current viewport x %d, y %d\n", shared_fb_data->viewport_x, shared_fb_data->viewport_y);
|
437 |
|
|
win_x = target_x - shared_fb_data->viewport_x;
|
438 |
|
|
win_y = target_y - shared_fb_data->viewport_y;
|
439 |
|
|
if (win_x < 0) {
|
440 |
|
|
width += win_x;
|
441 |
|
|
win_x = 0;
|
442 |
|
|
}
|
443 |
|
|
if (win_y < 0) {
|
444 |
|
|
height += win_y;
|
445 |
|
|
win_y = 0;
|
446 |
|
|
}
|
447 |
|
|
if ((win_x + width) > win_width) {
|
448 |
|
|
width = win_width - win_x;
|
449 |
|
|
}
|
450 |
|
|
if ((win_y + height) > win_height) {
|
451 |
|
|
height = win_height - win_y;
|
452 |
|
|
}
|
453 |
|
|
DEBUG(2, " : after clipping, target_x %d, target_y %d, width %d, height %d\n", target_x, target_y, width, height);
|
454 |
|
|
if ((width < 0) || (height < 0)) {
|
455 |
|
|
return;
|
456 |
|
|
}
|
457 |
|
|
|
458 |
|
|
|
459 |
|
|
for (y = 0; y < height; y++) {
|
460 |
|
|
img_data0 = img_fb + (2 * (win_y + y) * (2 * target_viewport_width)) + (2 * win_x);
|
461 |
|
|
img_data1 = img_data0 + (2 * target_viewport_width);
|
462 |
|
|
for (x = 0; x < width; x++) {
|
463 |
|
|
colour = TARGET_NEXT_COLOUR();
|
464 |
|
|
*img_data0++ = colour;
|
465 |
|
|
*img_data0++ = colour;
|
466 |
|
|
*img_data1++ = colour;
|
467 |
|
|
*img_data1++ = colour;
|
468 |
|
|
}
|
469 |
|
|
TARGET_NEXT_LINE();
|
470 |
|
|
}
|
471 |
|
|
schedule_redraw(2 * win_x, 2 * win_y, 2 * width, 2 * height);
|
472 |
|
|
}
|
473 |
|
|
|
474 |
|
|
static void
|
475 |
|
|
RENDERFN(3, TARGET_FORMAT)(int target_x, int target_y, int width, int height)
|
476 |
|
|
{
|
477 |
|
|
int x, y;
|
478 |
|
|
int win_x, win_y;
|
479 |
|
|
unsigned int* img_data0;
|
480 |
|
|
unsigned int* img_data1;
|
481 |
|
|
unsigned int* img_data2;
|
482 |
|
|
unsigned int colour;
|
483 |
|
|
TARGET_DATA;
|
484 |
|
|
|
485 |
|
|
DEBUG(2, "rendering: target_x %d, target_y %d, width %d, height %d\n", target_x, target_y, width, height);
|
486 |
|
|
if ((0 == host_win) || !shared_fb_data->display_on || !shared_fb_data->blank_on) {
|
487 |
|
|
DEBUG(2, " : no-op, host_win %d, display_on %d, blank_on %d\n", (int)host_win, shared_fb_data->display_on, shared_fb_data->blank_on);
|
488 |
|
|
return;
|
489 |
|
|
}
|
490 |
|
|
DEBUG(2, " : current viewport x %d, y %d\n", shared_fb_data->viewport_x, shared_fb_data->viewport_y);
|
491 |
|
|
win_x = target_x - shared_fb_data->viewport_x;
|
492 |
|
|
win_y = target_y - shared_fb_data->viewport_y;
|
493 |
|
|
if (win_x < 0) {
|
494 |
|
|
width += win_x;
|
495 |
|
|
win_x = 0;
|
496 |
|
|
}
|
497 |
|
|
if (win_y < 0) {
|
498 |
|
|
height += win_y;
|
499 |
|
|
win_y = 0;
|
500 |
|
|
}
|
501 |
|
|
if ((win_x + width) > win_width) {
|
502 |
|
|
width = win_width - win_x;
|
503 |
|
|
}
|
504 |
|
|
if ((win_y + height) > win_height) {
|
505 |
|
|
height = win_height - win_y;
|
506 |
|
|
}
|
507 |
|
|
DEBUG(2, " : after clipping, target_x %d, target_y %d, width %d, height %d\n", target_x, target_y, width, height);
|
508 |
|
|
if ((width < 0) || (height < 0)) {
|
509 |
|
|
return;
|
510 |
|
|
}
|
511 |
|
|
|
512 |
|
|
for (y = 0; y < height; y++) {
|
513 |
|
|
img_data0 = img_fb + (3 * (win_y + y) * (3 * target_viewport_width)) + (3 * win_x);
|
514 |
|
|
img_data1 = img_data0 + (3 * target_viewport_width);
|
515 |
|
|
img_data2 = img_data1 + (3 * target_viewport_width);
|
516 |
|
|
|
517 |
|
|
for (x = 0; x < width; x++) {
|
518 |
|
|
colour = TARGET_NEXT_COLOUR();
|
519 |
|
|
*img_data0++ = colour;
|
520 |
|
|
*img_data0++ = colour;
|
521 |
|
|
*img_data0++ = colour;
|
522 |
|
|
*img_data1++ = colour;
|
523 |
|
|
*img_data1++ = colour;
|
524 |
|
|
*img_data1++ = colour;
|
525 |
|
|
*img_data2++ = colour;
|
526 |
|
|
*img_data2++ = colour;
|
527 |
|
|
*img_data2++ = colour;
|
528 |
|
|
}
|
529 |
|
|
TARGET_NEXT_LINE();
|
530 |
|
|
}
|
531 |
|
|
schedule_redraw(3 * win_x, 3 * win_y, 3 * width, 3 * height);
|
532 |
|
|
}
|
533 |
|
|
|
534 |
|
|
static void
|
535 |
|
|
RENDERFN(4, TARGET_FORMAT)(int target_x, int target_y, int width, int height)
|
536 |
|
|
{
|
537 |
|
|
int x, y;
|
538 |
|
|
int win_x, win_y;
|
539 |
|
|
unsigned int* img_data0;
|
540 |
|
|
unsigned int* img_data1;
|
541 |
|
|
unsigned int* img_data2;
|
542 |
|
|
unsigned int* img_data3;
|
543 |
|
|
unsigned int colour;
|
544 |
|
|
TARGET_DATA;
|
545 |
|
|
|
546 |
|
|
DEBUG(2, "rendering: target_x %d, target_y %d, width %d, height %d\n", target_x, target_y, width, height);
|
547 |
|
|
if ((0 == host_win) || !shared_fb_data->display_on || !shared_fb_data->blank_on) {
|
548 |
|
|
DEBUG(2, " : no-op, host_win %d, display_on %d, blank_on %d\n", (int)host_win, shared_fb_data->display_on, shared_fb_data->blank_on);
|
549 |
|
|
return;
|
550 |
|
|
}
|
551 |
|
|
DEBUG(2, " : current viewport x %d, y %d\n", shared_fb_data->viewport_x, shared_fb_data->viewport_y);
|
552 |
|
|
win_x = target_x - shared_fb_data->viewport_x;
|
553 |
|
|
win_y = target_y - shared_fb_data->viewport_y;
|
554 |
|
|
if (win_x < 0) {
|
555 |
|
|
width += win_x;
|
556 |
|
|
win_x = 0;
|
557 |
|
|
}
|
558 |
|
|
if (win_y < 0) {
|
559 |
|
|
height += win_y;
|
560 |
|
|
win_y = 0;
|
561 |
|
|
}
|
562 |
|
|
if ((win_x + width) > win_width) {
|
563 |
|
|
width = win_width - win_x;
|
564 |
|
|
}
|
565 |
|
|
if ((win_y + height) > win_height) {
|
566 |
|
|
height = win_height - win_y;
|
567 |
|
|
}
|
568 |
|
|
DEBUG(2, " : after clipping, target_x %d, target_y %d, width %d, height %d\n", target_x, target_y, width, height);
|
569 |
|
|
if ((width < 0) || (height < 0)) {
|
570 |
|
|
return;
|
571 |
|
|
}
|
572 |
|
|
|
573 |
|
|
for (y = 0; y < height; y++) {
|
574 |
|
|
img_data0 = img_fb + (4 * (win_y + y) * (4 * target_viewport_width)) + (4 * win_x);
|
575 |
|
|
img_data1 = img_data0 + (4 * target_viewport_width);
|
576 |
|
|
img_data2 = img_data1 + (4 * target_viewport_width);
|
577 |
|
|
img_data3 = img_data2 + (4 * target_viewport_width);
|
578 |
|
|
|
579 |
|
|
for (x = 0; x < width; x++) {
|
580 |
|
|
colour = TARGET_NEXT_COLOUR();
|
581 |
|
|
*img_data0++ = colour;
|
582 |
|
|
*img_data0++ = colour;
|
583 |
|
|
*img_data0++ = colour;
|
584 |
|
|
*img_data0++ = colour;
|
585 |
|
|
*img_data1++ = colour;
|
586 |
|
|
*img_data1++ = colour;
|
587 |
|
|
*img_data1++ = colour;
|
588 |
|
|
*img_data1++ = colour;
|
589 |
|
|
*img_data2++ = colour;
|
590 |
|
|
*img_data2++ = colour;
|
591 |
|
|
*img_data2++ = colour;
|
592 |
|
|
*img_data2++ = colour;
|
593 |
|
|
*img_data3++ = colour;
|
594 |
|
|
*img_data3++ = colour;
|
595 |
|
|
*img_data3++ = colour;
|
596 |
|
|
*img_data3++ = colour;
|
597 |
|
|
}
|
598 |
|
|
TARGET_NEXT_LINE();
|
599 |
|
|
}
|
600 |
|
|
schedule_redraw(4 * win_x, 4 * win_y, 4 * width, 4 * height);
|
601 |
|
|
}
|
602 |
|
|
|
603 |
|
|
#endif
|
604 |
|
|
#ifndef RENDERFN
|
605 |
|
|
|
606 |
|
|
# define RENDERFN_AUX(_magnification_, _format_) render_ ## _magnification_ ## _ ## _format_
|
607 |
|
|
# define RENDERFN(_magnification_, _format_) RENDERFN_AUX(_magnification_, _format_)
|
608 |
|
|
|
609 |
|
|
// ----------------------------------------------------------------------------
|
610 |
|
|
// 1bpp, BE. It is convenient to always render in byte-multiples
|
611 |
|
|
# define TARGET_FORMAT 1BPP_BE
|
612 |
|
|
|
613 |
|
|
# define TARGET_DATA \
|
614 |
|
|
unsigned char* target_fb_current; \
|
615 |
|
|
unsigned int mask; \
|
616 |
|
|
width += target_x & 0x07; \
|
617 |
|
|
target_x &= ~0x07; \
|
618 |
|
|
width = (width + 7) & ~0x07; \
|
619 |
|
|
target_fb_current = ((unsigned char*)target_fb) + \
|
620 |
|
|
(target_y * target_stride) + (target_x >> 3); \
|
621 |
|
|
mask = 0x0080
|
622 |
|
|
|
623 |
|
|
# define TARGET_NEXT_COLOUR() \
|
624 |
|
|
({ \
|
625 |
|
|
unsigned int next_colour; \
|
626 |
|
|
next_colour = host_palette[*target_fb_current & mask]; \
|
627 |
|
|
mask >>= 1; \
|
628 |
|
|
if (0 == mask) { \
|
629 |
|
|
target_fb_current += 1; \
|
630 |
|
|
mask = 0x0080; \
|
631 |
|
|
} \
|
632 |
|
|
next_colour; \
|
633 |
|
|
})
|
634 |
|
|
|
635 |
|
|
# define TARGET_NEXT_LINE() \
|
636 |
|
|
target_fb_current += target_stride - (width >> 3)
|
637 |
|
|
|
638 |
|
|
# include "framebuf.c"
|
639 |
|
|
# undef TARGET_FORMAT
|
640 |
|
|
# undef TARGET_DATA
|
641 |
|
|
# undef TARGET_NEXT_COLOUR
|
642 |
|
|
# undef TARGET_NEXT_LINE
|
643 |
|
|
|
644 |
|
|
// ----------------------------------------------------------------------------
|
645 |
|
|
// 1bpp, LE
|
646 |
|
|
# define TARGET_FORMAT 1BPP_LE
|
647 |
|
|
|
648 |
|
|
# define TARGET_DATA \
|
649 |
|
|
unsigned char* target_fb_current; \
|
650 |
|
|
unsigned int mask; \
|
651 |
|
|
width += target_x & 0x07; \
|
652 |
|
|
target_x &= ~0x07; \
|
653 |
|
|
width = (width + 7) & ~0x07; \
|
654 |
|
|
target_fb_current = ((unsigned char*)target_fb) + \
|
655 |
|
|
(target_y * target_stride) + (target_x >> 3); \
|
656 |
|
|
mask = 0x0001
|
657 |
|
|
|
658 |
|
|
# define TARGET_NEXT_COLOUR() \
|
659 |
|
|
({ \
|
660 |
|
|
unsigned int next_colour; \
|
661 |
|
|
next_colour = host_palette[*target_fb_current & mask]; \
|
662 |
|
|
mask <<= 1; \
|
663 |
|
|
if (0x0100 == mask) { \
|
664 |
|
|
target_fb_current += 1; \
|
665 |
|
|
mask = 0x0001; \
|
666 |
|
|
} \
|
667 |
|
|
next_colour; \
|
668 |
|
|
})
|
669 |
|
|
|
670 |
|
|
# define TARGET_NEXT_LINE() \
|
671 |
|
|
target_fb_current += target_stride - (width >> 3)
|
672 |
|
|
|
673 |
|
|
# include "framebuf.c"
|
674 |
|
|
# undef TARGET_FORMAT
|
675 |
|
|
# undef TARGET_DATA
|
676 |
|
|
# undef TARGET_NEXT_COLOUR
|
677 |
|
|
# undef TARGET_NEXT_LINE
|
678 |
|
|
|
679 |
|
|
// ----------------------------------------------------------------------------
|
680 |
|
|
// 2bpp, BE
|
681 |
|
|
# define TARGET_FORMAT 2BPP_BE
|
682 |
|
|
|
683 |
|
|
# define TARGET_DATA \
|
684 |
|
|
unsigned char* target_fb_current; \
|
685 |
|
|
unsigned int mask; \
|
686 |
|
|
width += target_x & 0x03; \
|
687 |
|
|
target_x &= ~0x03; \
|
688 |
|
|
width = (width + 3) & ~0x03; \
|
689 |
|
|
target_fb_current = ((unsigned char*)target_fb) + \
|
690 |
|
|
(target_y * target_stride) + (target_x >> 2); \
|
691 |
|
|
mask = 0x00C0
|
692 |
|
|
|
693 |
|
|
# define TARGET_NEXT_COLOUR() \
|
694 |
|
|
({ \
|
695 |
|
|
unsigned int next_colour; \
|
696 |
|
|
next_colour = host_palette[*target_fb_current & mask]; \
|
697 |
|
|
mask >>= 2; \
|
698 |
|
|
if (0x00 == mask) { \
|
699 |
|
|
target_fb_current += 1; \
|
700 |
|
|
mask = 0x00C0; \
|
701 |
|
|
} \
|
702 |
|
|
next_colour; \
|
703 |
|
|
})
|
704 |
|
|
|
705 |
|
|
# define TARGET_NEXT_LINE() \
|
706 |
|
|
target_fb_current += target_stride - (width >> 2)
|
707 |
|
|
|
708 |
|
|
# include "framebuf.c"
|
709 |
|
|
# undef TARGET_FORMAT
|
710 |
|
|
# undef TARGET_DATA
|
711 |
|
|
# undef TARGET_NEXT_COLOUR
|
712 |
|
|
# undef TARGET_NEXT_LINE
|
713 |
|
|
|
714 |
|
|
// ----------------------------------------------------------------------------
|
715 |
|
|
// 2bpp, LE
|
716 |
|
|
# define TARGET_FORMAT 2BPP_LE
|
717 |
|
|
|
718 |
|
|
# define TARGET_DATA \
|
719 |
|
|
unsigned char* target_fb_current; \
|
720 |
|
|
unsigned int mask; \
|
721 |
|
|
width += target_x & 0x03; \
|
722 |
|
|
target_x &= ~0x03; \
|
723 |
|
|
width = (width + 3) & ~0x03; \
|
724 |
|
|
target_fb_current = ((unsigned char*)target_fb) + \
|
725 |
|
|
(target_y * target_stride) + (target_x >> 2); \
|
726 |
|
|
mask = 0x0003
|
727 |
|
|
|
728 |
|
|
# define TARGET_NEXT_COLOUR() \
|
729 |
|
|
({ \
|
730 |
|
|
unsigned int next_colour; \
|
731 |
|
|
next_colour = host_palette[*target_fb_current & mask]; \
|
732 |
|
|
mask <<= 2; \
|
733 |
|
|
if (0x0300 == mask) { \
|
734 |
|
|
target_fb_current += 1; \
|
735 |
|
|
mask = 0x0003; \
|
736 |
|
|
} \
|
737 |
|
|
next_colour; \
|
738 |
|
|
})
|
739 |
|
|
|
740 |
|
|
# define TARGET_NEXT_LINE() \
|
741 |
|
|
target_fb_current += target_stride - (width >> 2)
|
742 |
|
|
|
743 |
|
|
# include "framebuf.c"
|
744 |
|
|
# undef TARGET_FORMAT
|
745 |
|
|
# undef TARGET_DATA
|
746 |
|
|
# undef TARGET_NEXT_COLOUR
|
747 |
|
|
# undef TARGET_NEXT_LINE
|
748 |
|
|
|
749 |
|
|
// ----------------------------------------------------------------------------
|
750 |
|
|
// 4bpp, BE
|
751 |
|
|
# define TARGET_FORMAT 4BPP_BE
|
752 |
|
|
|
753 |
|
|
# define TARGET_DATA \
|
754 |
|
|
unsigned char* target_fb_current; \
|
755 |
|
|
unsigned int mask; \
|
756 |
|
|
width += target_x & 0x01; \
|
757 |
|
|
target_x &= ~0x01; \
|
758 |
|
|
width = (width + 1) & ~0x01; \
|
759 |
|
|
target_fb_current = ((unsigned char*)target_fb) + \
|
760 |
|
|
(target_y * target_stride) + (target_x >> 1); \
|
761 |
|
|
mask = 0x00F0
|
762 |
|
|
|
763 |
|
|
# define TARGET_NEXT_COLOUR() \
|
764 |
|
|
({ \
|
765 |
|
|
unsigned int next_colour; \
|
766 |
|
|
next_colour = host_palette[*target_fb_current & mask]; \
|
767 |
|
|
mask >>= 4; \
|
768 |
|
|
if (0 == mask) { \
|
769 |
|
|
target_fb_current += 1; \
|
770 |
|
|
mask = 0x00F0; \
|
771 |
|
|
} \
|
772 |
|
|
next_colour; \
|
773 |
|
|
})
|
774 |
|
|
|
775 |
|
|
# define TARGET_NEXT_LINE() \
|
776 |
|
|
target_fb_current += target_stride - (width >> 1)
|
777 |
|
|
|
778 |
|
|
# include "framebuf.c"
|
779 |
|
|
# undef TARGET_FORMAT
|
780 |
|
|
# undef TARGET_DATA
|
781 |
|
|
# undef TARGET_NEXT_COLOUR
|
782 |
|
|
# undef TARGET_NEXT_LINE
|
783 |
|
|
|
784 |
|
|
// ----------------------------------------------------------------------------
|
785 |
|
|
// 4bpp, LE
|
786 |
|
|
# define TARGET_FORMAT 4BPP_LE
|
787 |
|
|
|
788 |
|
|
# define TARGET_DATA \
|
789 |
|
|
unsigned char* target_fb_current; \
|
790 |
|
|
unsigned int mask; \
|
791 |
|
|
width += target_x & 0x01; \
|
792 |
|
|
target_x &= ~0x01; \
|
793 |
|
|
width = (width + 1) & ~0x01; \
|
794 |
|
|
target_fb_current = ((unsigned char*)target_fb) + \
|
795 |
|
|
(target_y * target_stride) + (target_x >> 1); \
|
796 |
|
|
mask = 0x000F
|
797 |
|
|
|
798 |
|
|
# define TARGET_NEXT_COLOUR() \
|
799 |
|
|
({ \
|
800 |
|
|
unsigned int next_colour; \
|
801 |
|
|
next_colour = host_palette[*target_fb_current & mask]; \
|
802 |
|
|
mask <<= 4; \
|
803 |
|
|
if (0x0F00 == mask) { \
|
804 |
|
|
target_fb_current += 1; \
|
805 |
|
|
mask = 0x000F; \
|
806 |
|
|
} \
|
807 |
|
|
next_colour; \
|
808 |
|
|
})
|
809 |
|
|
|
810 |
|
|
# define TARGET_NEXT_LINE() \
|
811 |
|
|
target_fb_current += target_stride - (width >> 2)
|
812 |
|
|
|
813 |
|
|
# include "framebuf.c"
|
814 |
|
|
# undef TARGET_FORMAT
|
815 |
|
|
# undef TARGET_DATA
|
816 |
|
|
# undef TARGET_NEXT_COLOUR
|
817 |
|
|
# undef TARGET_NEXT_LINE
|
818 |
|
|
|
819 |
|
|
// ----------------------------------------------------------------------------
|
820 |
|
|
// 8bpp, paletted or true colour. In the case of a true colour display the
|
821 |
|
|
// host_palette array will have been filled in appropriately for 332 so
|
822 |
|
|
// conversion to 32-bit true colour again just involves indirecting through
|
823 |
|
|
// the palette, rather than the more expensive bit masking and shifting.
|
824 |
|
|
# define TARGET_FORMAT 8BPP
|
825 |
|
|
|
826 |
|
|
# define TARGET_DATA \
|
827 |
|
|
unsigned char* target_fb_current; \
|
828 |
|
|
target_fb_current = ((unsigned char*)target_fb) + \
|
829 |
|
|
(target_y * target_stride) + target_x
|
830 |
|
|
|
831 |
|
|
# define TARGET_NEXT_COLOUR() host_palette[*target_fb_current++]
|
832 |
|
|
|
833 |
|
|
# define TARGET_NEXT_LINE() \
|
834 |
|
|
target_fb_current += (target_stride - width)
|
835 |
|
|
|
836 |
|
|
# include "framebuf.c"
|
837 |
|
|
# undef TARGET_FORMAT
|
838 |
|
|
# undef TARGET_DATA
|
839 |
|
|
# undef TARGET_NEXT_COLOUR
|
840 |
|
|
# undef TARGET_NEXT_LINE
|
841 |
|
|
|
842 |
|
|
// ----------------------------------------------------------------------------
|
843 |
|
|
// 16bpp. Again this is handled via the host_palette array, suitably
|
844 |
|
|
// initialized for either 555 or 565
|
845 |
|
|
# define TARGET_FORMAT 16BPP
|
846 |
|
|
|
847 |
|
|
# define TARGET_DATA \
|
848 |
|
|
unsigned short* target_fb_current; \
|
849 |
|
|
target_fb_current = ((unsigned short*)target_fb) + \
|
850 |
|
|
(target_y * (target_stride >> 1)) + target_x
|
851 |
|
|
|
852 |
|
|
# define TARGET_NEXT_COLOUR() host_palette[*target_fb_current++]
|
853 |
|
|
|
854 |
|
|
# define TARGET_NEXT_LINE() \
|
855 |
|
|
target_fb_current += ((target_stride >> 1) - width)
|
856 |
|
|
|
857 |
|
|
# include "framebuf.c"
|
858 |
|
|
# undef TARGET_FORMAT
|
859 |
|
|
# undef TARGET_DATA
|
860 |
|
|
# undef TARGET_NEXT_COLOUR
|
861 |
|
|
# undef TARGET_NEXT_LINE
|
862 |
|
|
|
863 |
|
|
// ----------------------------------------------------------------------------
|
864 |
|
|
// 32bpp, 0888, no swapping
|
865 |
|
|
|
866 |
|
|
# define TARGET_FORMAT 32BPP
|
867 |
|
|
|
868 |
|
|
# define TARGET_DATA \
|
869 |
|
|
unsigned int* target_fb_current; \
|
870 |
|
|
target_fb_current = ((unsigned int*)target_fb) + \
|
871 |
|
|
(target_y * (target_stride >> 2)) + target_x
|
872 |
|
|
|
873 |
|
|
# define TARGET_NEXT_COLOUR() *target_fb_current++ & 0x00FFFFFF
|
874 |
|
|
|
875 |
|
|
# define TARGET_NEXT_LINE() \
|
876 |
|
|
target_fb_current += ((target_stride >> 2) - width)
|
877 |
|
|
|
878 |
|
|
# include "framebuf.c"
|
879 |
|
|
# undef TARGET_FORMAT
|
880 |
|
|
# undef TARGET_DATA
|
881 |
|
|
# undef TARGET_NEXT_COLOUR
|
882 |
|
|
# undef TARGET_NEXT_LINE
|
883 |
|
|
|
884 |
|
|
// ----------------------------------------------------------------------------
|
885 |
|
|
// 32bpp, 0888, but the host uses 8880.
|
886 |
|
|
# define TARGET_FORMAT 32BPP_SWAPPED
|
887 |
|
|
|
888 |
|
|
# define TARGET_DATA \
|
889 |
|
|
unsigned int* target_fb_current; \
|
890 |
|
|
target_fb_current = ((unsigned int*)target_fb) + \
|
891 |
|
|
(target_y * (target_stride >> 2)) + target_x
|
892 |
|
|
|
893 |
|
|
# define TARGET_NEXT_COLOUR() \
|
894 |
|
|
({ \
|
895 |
|
|
unsigned int _colour_ = *target_fb_current++; \
|
896 |
|
|
_colour_ = \
|
897 |
|
|
((_colour_ & 0x000000FF) << 24) | \
|
898 |
|
|
((_colour_ & 0x0000FF00) << 16) | \
|
899 |
|
|
((_colour_ & 0x00FF0000) << 8); \
|
900 |
|
|
_colour_; \
|
901 |
|
|
})
|
902 |
|
|
|
903 |
|
|
# define TARGET_NEXT_LINE() \
|
904 |
|
|
target_fb_current += ((target_stride >> 2) - width)
|
905 |
|
|
|
906 |
|
|
# include "framebuf.c"
|
907 |
|
|
# undef TARGET_FORMAT
|
908 |
|
|
# undef TARGET_DATA
|
909 |
|
|
# undef TARGET_NEXT_COLOUR
|
910 |
|
|
# undef TARGET_NEXT_LINE
|
911 |
|
|
|
912 |
|
|
// ----------------------------------------------------------------------------
|
913 |
|
|
// Palette management. 8bpp and 16bpp true colour can be initialized
|
914 |
|
|
// statically. 32bpp does not involve the host_palette array at all.
|
915 |
|
|
// Other formats involve dynamic palette updating.
|
916 |
|
|
|
917 |
|
|
static void
|
918 |
|
|
palette_initialize_8bpp_332(void)
|
919 |
|
|
{
|
920 |
|
|
static const unsigned char expand2[4] = { 0x00, 0x55, 0xAA, 0xFF };
|
921 |
|
|
static const unsigned char expand3[8] = { 0x00, 0x20 + 4, 0x40 + 9, 0x60 + 13, 0x80 + 18, 0xA0 + 22, 0xC0 + 27, 0xE0 + 31 };
|
922 |
|
|
int i;
|
923 |
|
|
for (i = 0; i < 256; i++) {
|
924 |
|
|
int r = (i & 0x00E0) >> 5;
|
925 |
|
|
int g = (i & 0x001C) >> 2;
|
926 |
|
|
int b = (i & 0x0003) >> 0;
|
927 |
|
|
host_palette[i] = (expand3[r] << host_r_shift) | (expand3[g] << host_g_shift) | (expand2[b] << host_b_shift);
|
928 |
|
|
}
|
929 |
|
|
}
|
930 |
|
|
|
931 |
|
|
static void
|
932 |
|
|
palette_initialize_16bpp_555(void)
|
933 |
|
|
{
|
934 |
|
|
static const unsigned char expand5[32] = {
|
935 |
|
|
0x00 + 0, 0x08 + 0, 0x10 + 0, 0x18 + 0, 0x20 + 1, 0x28 + 1, 0x30 + 1, 0x38 + 1,
|
936 |
|
|
0x40 + 2, 0x48 + 2, 0x50 + 2, 0x58 + 2, 0x60 + 3, 0x68 + 3, 0x70 + 3, 0x78 + 3,
|
937 |
|
|
0x80 + 4, 0x88 + 4, 0x90 + 4, 0x98 + 4, 0xA0 + 5, 0xA8 + 5, 0xB0 + 5, 0xB8 + 5,
|
938 |
|
|
0xC0 + 6, 0xC8 + 6, 0xD0 + 6, 0xD8 + 6, 0xE0 + 7, 0xE8 + 7, 0xF0 + 7, 0xF8 + 7,
|
939 |
|
|
};
|
940 |
|
|
int i;
|
941 |
|
|
for (i = 0; i < 65536; i++) {
|
942 |
|
|
int r = (i & 0x00007C00) >> 10;
|
943 |
|
|
int g = (i & 0x000003E0) >> 5;
|
944 |
|
|
int b = (i & 0x0000001F) >> 0;
|
945 |
|
|
host_palette[i] = (expand5[r] << host_r_shift) | (expand5[g] << host_g_shift) | (expand5[b] << host_b_shift);
|
946 |
|
|
}
|
947 |
|
|
}
|
948 |
|
|
|
949 |
|
|
static void
|
950 |
|
|
palette_initialize_16bpp_565(void)
|
951 |
|
|
{
|
952 |
|
|
static const unsigned char expand5[32] = {
|
953 |
|
|
0x00 + 0, 0x08 + 0, 0x10 + 0, 0x18 + 0, 0x20 + 1, 0x28 + 1, 0x30 + 1, 0x38 + 1,
|
954 |
|
|
0x40 + 2, 0x48 + 2, 0x50 + 2, 0x58 + 2, 0x60 + 3, 0x68 + 3, 0x70 + 3, 0x78 + 3,
|
955 |
|
|
0x80 + 4, 0x88 + 4, 0x90 + 4, 0x98 + 4, 0xA0 + 5, 0xA8 + 5, 0xB0 + 5, 0xB8 + 5,
|
956 |
|
|
0xC0 + 6, 0xC8 + 6, 0xD0 + 6, 0xD8 + 6, 0xE0 + 7, 0xE8 + 7, 0xF0 + 7, 0xF8 + 7,
|
957 |
|
|
};
|
958 |
|
|
static const unsigned char expand6[64] = {
|
959 |
|
|
0x00 + 0, 0x04 + 0, 0x08 + 0, 0x0C + 0, 0x10 + 0, 0x14 + 0, 0x18 + 0, 0x1C + 0,
|
960 |
|
|
0x20 + 0, 0x24 + 0, 0x28 + 0, 0x2C + 0, 0x30 + 0, 0x34 + 0, 0x38 + 0, 0x3C + 0,
|
961 |
|
|
0x40 + 1, 0x44 + 1, 0x48 + 1, 0x4C + 1, 0x50 + 1, 0x54 + 1, 0x58 + 1, 0x5C + 1,
|
962 |
|
|
0x60 + 1, 0x64 + 1, 0x68 + 1, 0x6C + 1, 0x70 + 1, 0x74 + 1, 0x78 + 1, 0x7C + 1,
|
963 |
|
|
0x80 + 2, 0x84 + 2, 0x88 + 2, 0x8C + 2, 0x90 + 2, 0x94 + 2, 0x98 + 2, 0x9C + 2,
|
964 |
|
|
0xA0 + 2, 0xA4 + 2, 0xA8 + 2, 0xAC + 2, 0xB0 + 2, 0xB4 + 2, 0xB8 + 2, 0xBC + 2,
|
965 |
|
|
0xC0 + 3, 0xC4 + 3, 0xC8 + 3, 0xCC + 3, 0xD0 + 3, 0xD4 + 3, 0xD8 + 3, 0xDC + 3,
|
966 |
|
|
0xE0 + 3, 0xE4 + 3, 0xE8 + 3, 0xEC + 3, 0xF0 + 3, 0xF4 + 3, 0xF8 + 3, 0xFC + 3,
|
967 |
|
|
};
|
968 |
|
|
int i;
|
969 |
|
|
for (i = 0; i < 65536; i++) {
|
970 |
|
|
int r = (i & 0x0000F800) >> 11;
|
971 |
|
|
int g = (i & 0x000007E0) >> 5;
|
972 |
|
|
int b = (i & 0x0000001F) >> 0;
|
973 |
|
|
host_palette[i] = (expand5[r] << host_r_shift) | (expand6[g] << host_g_shift) | (expand5[b] << host_b_shift);
|
974 |
|
|
}
|
975 |
|
|
}
|
976 |
|
|
|
977 |
|
|
static void
|
978 |
|
|
palette_update(void)
|
979 |
|
|
{
|
980 |
|
|
int i, j;
|
981 |
|
|
unsigned char* target_palette;
|
982 |
|
|
int r, g, b;
|
983 |
|
|
|
984 |
|
|
target_palette = shared_fb_data->palette;
|
985 |
|
|
for (i = 0; i < (0x01 << target_depth); i++) {
|
986 |
|
|
r = *target_palette++;
|
987 |
|
|
g = *target_palette++;
|
988 |
|
|
b = *target_palette++;
|
989 |
|
|
host_palette[i] = (r << host_r_shift) | (g << host_g_shift) | (b << host_b_shift);
|
990 |
|
|
}
|
991 |
|
|
|
992 |
|
|
// Make sure the palette is replicated throughout the first 256
|
993 |
|
|
// entries. That way when rendering <8bpp data we can just mask
|
994 |
|
|
// the target-side bytes without having to shift.
|
995 |
|
|
for (j = 0; i < 256; i++, j++) {
|
996 |
|
|
host_palette[i] = host_palette[j];
|
997 |
|
|
}
|
998 |
|
|
}
|
999 |
|
|
|
1000 |
|
|
// ----------------------------------------------------------------------------
|
1001 |
|
|
// This array is used to map the various display formats etc. on to
|
1002 |
|
|
// render functions.
|
1003 |
|
|
static struct _render_details {
|
1004 |
|
|
char* rd_format;
|
1005 |
|
|
unsigned int rd_endianness_matters;
|
1006 |
|
|
unsigned int rd_le;
|
1007 |
|
|
void (*rd_palette_init)(void);
|
1008 |
|
|
void (*rd_palette_update)(void);
|
1009 |
|
|
void (*rd_render_fns[4])(int, int, int, int);
|
1010 |
|
|
} render_array[] = {
|
1011 |
|
|
// 32BPP must come first
|
1012 |
|
|
{ "32BPP_TRUE_0888", 0, 0, NULL, NULL,
|
1013 |
|
|
{ &render_1_32BPP, &render_2_32BPP, &render_3_32BPP, &render_4_32BPP }
|
1014 |
|
|
},
|
1015 |
|
|
{ "16BPP_TRUE_555", 0, 0, &palette_initialize_16bpp_555, NULL,
|
1016 |
|
|
{ &render_1_16BPP, &render_2_16BPP, &render_3_16BPP, &render_4_16BPP }
|
1017 |
|
|
},
|
1018 |
|
|
{ "16BPP_TRUE_565", 0, 0, &palette_initialize_16bpp_565, NULL,
|
1019 |
|
|
{ &render_1_16BPP, &render_2_16BPP, &render_3_16BPP, &render_4_16BPP }
|
1020 |
|
|
},
|
1021 |
|
|
{ "8BPP_TRUE_332", 0, 0, &palette_initialize_8bpp_332, NULL,
|
1022 |
|
|
{ &render_1_8BPP, &render_2_8BPP, &render_3_8BPP, &render_4_8BPP }
|
1023 |
|
|
},
|
1024 |
|
|
{ "8BPP_PAL888", 0, 0, NULL, &palette_update,
|
1025 |
|
|
{ &render_1_8BPP, &render_2_8BPP, &render_3_8BPP, &render_4_8BPP }
|
1026 |
|
|
},
|
1027 |
|
|
{ "4BPP_PAL888", 1, 1, NULL, &palette_update,
|
1028 |
|
|
{ &render_1_4BPP_LE, &render_2_4BPP_LE, &render_3_4BPP_LE, &render_4_4BPP_LE }
|
1029 |
|
|
},
|
1030 |
|
|
{ "4BPP_PAL888", 1, 0, NULL, &palette_update,
|
1031 |
|
|
{ &render_1_4BPP_BE, &render_2_4BPP_BE, &render_3_4BPP_BE, &render_4_4BPP_BE }
|
1032 |
|
|
},
|
1033 |
|
|
{ "2BPP_PAL888", 1, 1, NULL, &palette_update,
|
1034 |
|
|
{ &render_1_2BPP_LE, &render_2_2BPP_LE, &render_3_2BPP_LE, &render_4_2BPP_LE }
|
1035 |
|
|
},
|
1036 |
|
|
{ "2BPP_PAL888", 1, 0, NULL, &palette_update,
|
1037 |
|
|
{ &render_1_2BPP_BE, &render_2_2BPP_BE, &render_3_2BPP_BE, &render_4_2BPP_BE }
|
1038 |
|
|
},
|
1039 |
|
|
{ "1BPP_PAL888", 1, 1, NULL, &palette_update,
|
1040 |
|
|
{ &render_1_1BPP_LE, &render_2_1BPP_LE, &render_3_1BPP_LE, &render_4_1BPP_LE }
|
1041 |
|
|
},
|
1042 |
|
|
{ "1BPP_PAL888", 1, 0, NULL, &palette_update,
|
1043 |
|
|
{ &render_1_1BPP_BE, &render_2_1BPP_BE, &render_3_1BPP_BE, &render_4_1BPP_BE }
|
1044 |
|
|
},
|
1045 |
|
|
{ NULL }
|
1046 |
|
|
};
|
1047 |
|
|
|
1048 |
|
|
|
1049 |
|
|
// ----------------------------------------------------------------------------
|
1050 |
|
|
// Communication between host and target
|
1051 |
|
|
//
|
1052 |
|
|
// When the target wants to wake up the host it sends a single byte down
|
1053 |
|
|
// a fifo, typically after having filled in appropriate fields in the
|
1054 |
|
|
// shared memory region.
|
1055 |
|
|
static void
|
1056 |
|
|
handle_target_request(void)
|
1057 |
|
|
{
|
1058 |
|
|
unsigned char buf[1];
|
1059 |
|
|
int result;
|
1060 |
|
|
|
1061 |
|
|
result = read(fifo_t2h_fd, buf, 1);
|
1062 |
|
|
if (-1 == result) {
|
1063 |
|
|
if (EINTR == errno) {
|
1064 |
|
|
return;
|
1065 |
|
|
}
|
1066 |
|
|
error("unexpected error %d (%s) reading fifo command from target-side code", errno, strerror(errno));
|
1067 |
|
|
}
|
1068 |
|
|
if (0 == result) {
|
1069 |
|
|
// The target-side must have exited. Do not follow suit yet. Instead
|
1070 |
|
|
// exit only when the I/O auxiliary exits.
|
1071 |
|
|
DEBUG(1, "eCos application has exited\n");
|
1072 |
|
|
close(fifo_t2h_fd);
|
1073 |
|
|
fifo_t2h_fd = -1;
|
1074 |
|
|
return;
|
1075 |
|
|
}
|
1076 |
|
|
|
1077 |
|
|
switch(buf[0]) {
|
1078 |
|
|
case SYNTH_FB_OK:
|
1079 |
|
|
{
|
1080 |
|
|
// The target has finished initializing. This may have
|
1081 |
|
|
// involved filling in the palette
|
1082 |
|
|
DEBUG(1, "target request SYNTH_FB_OK, eCos application has connected.\n");
|
1083 |
|
|
if (palette_update_fn) {
|
1084 |
|
|
(*palette_update_fn)();
|
1085 |
|
|
}
|
1086 |
|
|
break;
|
1087 |
|
|
}
|
1088 |
|
|
|
1089 |
|
|
case SYNTH_FB_SYNC:
|
1090 |
|
|
{
|
1091 |
|
|
// The target has updated part of the display.
|
1092 |
|
|
DEBUG(2, "target request SYNC, x0 %d, y0 %d, x1 %d, y1 %d\n",
|
1093 |
|
|
shared_fb_data->sync_x0, shared_fb_data->sync_y0, shared_fb_data->sync_x1, shared_fb_data->sync_y1);
|
1094 |
|
|
(*render_fn)(shared_fb_data->sync_x0, shared_fb_data->sync_y0,
|
1095 |
|
|
(shared_fb_data->sync_x1 - shared_fb_data->sync_x0),
|
1096 |
|
|
(shared_fb_data->sync_y1 - shared_fb_data->sync_y0));
|
1097 |
|
|
break;
|
1098 |
|
|
}
|
1099 |
|
|
|
1100 |
|
|
case SYNTH_FB_WRITE_PALETTE:
|
1101 |
|
|
{
|
1102 |
|
|
// The target-side palette has been updated. Adjust the
|
1103 |
|
|
// host-side palette and then render the whole window with
|
1104 |
|
|
// the curent colours (unless blanked).
|
1105 |
|
|
DEBUG(1, "target request WRITE_PALETTE\n");
|
1106 |
|
|
if (palette_update_fn) {
|
1107 |
|
|
(*palette_update_fn)();
|
1108 |
|
|
}
|
1109 |
|
|
(*render_fn)(shared_fb_data->viewport_x, shared_fb_data->viewport_y, win_width, win_height);
|
1110 |
|
|
}
|
1111 |
|
|
|
1112 |
|
|
case SYNTH_FB_BLANK:
|
1113 |
|
|
{
|
1114 |
|
|
DEBUG(1, "target request blank, display should be %s\n", shared_fb_data->blank_on ? "on" : "off");
|
1115 |
|
|
if (shared_fb_data->blank_on) {
|
1116 |
|
|
(*render_fn)(shared_fb_data->viewport_x, shared_fb_data->viewport_y, win_width, win_height);
|
1117 |
|
|
} else {
|
1118 |
|
|
blackout();
|
1119 |
|
|
}
|
1120 |
|
|
break;
|
1121 |
|
|
}
|
1122 |
|
|
|
1123 |
|
|
case SYNTH_FB_VIEWPORT:
|
1124 |
|
|
{
|
1125 |
|
|
// Just rerender the whole display as per the new viewport position.
|
1126 |
|
|
DEBUG(1, "target request move viewport to x %d, y %d\n", shared_fb_data->viewport_x, shared_fb_data->viewport_y);
|
1127 |
|
|
(*render_fn)(shared_fb_data->viewport_x, shared_fb_data->viewport_y, win_width, win_height);
|
1128 |
|
|
break;
|
1129 |
|
|
}
|
1130 |
|
|
|
1131 |
|
|
case SYNTH_FB_PAGE_FLIP:
|
1132 |
|
|
{
|
1133 |
|
|
int page_size = target_height * target_stride;
|
1134 |
|
|
DEBUG(1, "target request page flip to page %d\n", shared_fb_data->page_visible);
|
1135 |
|
|
target_fb = (void*)(((char*)&(shared_fb_data->framebuf[0])) + (page_size * shared_fb_data->page_visible));
|
1136 |
|
|
(*render_fn)(shared_fb_data->viewport_x, shared_fb_data->viewport_y, win_width, win_height);
|
1137 |
|
|
break;
|
1138 |
|
|
}
|
1139 |
|
|
}
|
1140 |
|
|
|
1141 |
|
|
// Send a single-byte response back to the target
|
1142 |
|
|
DEBUG(2, "target request handled\n");
|
1143 |
|
|
buf[0] = SYNTH_FB_OK;
|
1144 |
|
|
do {
|
1145 |
|
|
result = write(fifo_h2t_fd, buf, 1);
|
1146 |
|
|
} while ((result < 0) && (errno == EINTR));
|
1147 |
|
|
if (result < 0) {
|
1148 |
|
|
error("unexpected error %d (%s) writing fifo status to target-side code", errno, strerror(errno));
|
1149 |
|
|
}
|
1150 |
|
|
}
|
1151 |
|
|
|
1152 |
|
|
// ----------------------------------------------------------------------------
|
1153 |
|
|
// Communication from the Tcl/Tk script
|
1154 |
|
|
static void
|
1155 |
|
|
handle_mapped(int winid)
|
1156 |
|
|
{
|
1157 |
|
|
Status result;
|
1158 |
|
|
XWindowAttributes attr;
|
1159 |
|
|
XGCValues gc_values;
|
1160 |
|
|
Visual* visual;
|
1161 |
|
|
int i;
|
1162 |
|
|
|
1163 |
|
|
DEBUG(1, "X window %d has been mapped\n", winid);
|
1164 |
|
|
if (0 != (int)host_win) {
|
1165 |
|
|
error(" window has already been mapped.\n");
|
1166 |
|
|
}
|
1167 |
|
|
|
1168 |
|
|
host_win = (Window)winid;
|
1169 |
|
|
result = XGetWindowAttributes(host_display, host_win, &attr);
|
1170 |
|
|
if (0 == result) {
|
1171 |
|
|
error("failed to get window attributes.");
|
1172 |
|
|
}
|
1173 |
|
|
gc_values.graphics_exposures = False;
|
1174 |
|
|
host_gc = XCreateGC(host_display, host_win, GCGraphicsExposures, &gc_values);
|
1175 |
|
|
result = XSelectInput(host_display, host_win, ExposureMask | StructureNotifyMask);
|
1176 |
|
|
|
1177 |
|
|
// The Tcl script has already checked that we are on a 24/32 bit display.
|
1178 |
|
|
// We need to know the colour shifts and possibly adjust the render array.
|
1179 |
|
|
visual = attr.visual;
|
1180 |
|
|
DEBUG(1, " red_mask 0x%08lx, green_mask 0x%08lx, blue_mask 0x%08lx\n", visual->red_mask, visual->green_mask, visual->blue_mask);
|
1181 |
|
|
if ((0x00FF0000 == visual->red_mask) && (0x0000FF00 == visual->green_mask) && (0x000000FF == visual->blue_mask)) {
|
1182 |
|
|
// 0888, nothing special needed
|
1183 |
|
|
host_r_shift = 16;
|
1184 |
|
|
host_g_shift = 8;
|
1185 |
|
|
host_b_shift = 0;
|
1186 |
|
|
} else if ((0x0000FF00 == visual->red_mask) && (0x00FF0000 == visual->green_mask) && (0xFF000000 == visual->blue_mask)) {
|
1187 |
|
|
// 8880
|
1188 |
|
|
host_r_shift = 8;
|
1189 |
|
|
host_g_shift = 16;
|
1190 |
|
|
host_b_shift = 24;
|
1191 |
|
|
render_array[0].rd_render_fns[0] = &render_1_32BPP_SWAPPED;
|
1192 |
|
|
render_array[0].rd_render_fns[1] = &render_2_32BPP_SWAPPED;
|
1193 |
|
|
render_array[0].rd_render_fns[2] = &render_3_32BPP_SWAPPED;
|
1194 |
|
|
render_array[0].rd_render_fns[3] = &render_4_32BPP_SWAPPED;
|
1195 |
|
|
}
|
1196 |
|
|
|
1197 |
|
|
// Time to figure out which render function etc. to use.
|
1198 |
|
|
render_fn = (void (*)(int, int, int, int)) NULL;
|
1199 |
|
|
for (i = 0; render_array[i].rd_format; i++) {
|
1200 |
|
|
if ((0 == strcmp(render_array[i].rd_format, target_format)) &&
|
1201 |
|
|
(!render_array[i].rd_endianness_matters || (render_array[i].rd_le == target_le))) {
|
1202 |
|
|
|
1203 |
|
|
render_fn = render_array[i].rd_render_fns[config_magnification - 1];
|
1204 |
|
|
palette_init_fn = render_array[i].rd_palette_init;
|
1205 |
|
|
palette_update_fn = render_array[i].rd_palette_update;
|
1206 |
|
|
break;
|
1207 |
|
|
}
|
1208 |
|
|
}
|
1209 |
|
|
if (NULL == render_fn) {
|
1210 |
|
|
error("Target format not supported.");
|
1211 |
|
|
}
|
1212 |
|
|
|
1213 |
|
|
// Now it is possible to create the XImage structure, the fifos,
|
1214 |
|
|
// and the shared memory region for interaction with the target.
|
1215 |
|
|
// The XImage needs to be large enough for the viewport. That may
|
1216 |
|
|
// be larger than the actually visible window, but the window may
|
1217 |
|
|
// get resized.
|
1218 |
|
|
host_image = XCreateImage(host_display, visual,
|
1219 |
|
|
24, // image depth. 24 bits of colour info.
|
1220 |
|
|
ZPixmap,
|
1221 |
|
|
0, // offset
|
1222 |
|
|
NULL, // data, filled in later
|
1223 |
|
|
target_viewport_width * config_magnification,
|
1224 |
|
|
target_viewport_height * config_magnification,
|
1225 |
|
|
32, // bitmap_pad
|
1226 |
|
|
|
1227 |
|
|
);
|
1228 |
|
|
if (NULL == host_image) {
|
1229 |
|
|
error("Failed to allocate XImage structure.");
|
1230 |
|
|
}
|
1231 |
|
|
host_image->data = (void*)img_fb;
|
1232 |
|
|
|
1233 |
|
|
x_win_width = attr.width;
|
1234 |
|
|
x_win_height = attr.height;
|
1235 |
|
|
win_width = (x_win_width + config_magnification - 1) / config_magnification;
|
1236 |
|
|
win_height = (x_win_height + config_magnification - 1) / config_magnification;
|
1237 |
|
|
DEBUG(1, " mapped window, X width %d, X height %d, win width %d, win height %d, blank on %d, display on %d\n",
|
1238 |
|
|
x_win_width, x_win_height, win_width, win_height, shared_fb_data->blank_on, shared_fb_data->display_on);
|
1239 |
|
|
|
1240 |
|
|
// The palette may get initialized locally or by the target, depending
|
1241 |
|
|
// on the mode.
|
1242 |
|
|
if (palette_init_fn) {
|
1243 |
|
|
(*palette_init_fn)();
|
1244 |
|
|
}
|
1245 |
|
|
if (palette_update_fn) {
|
1246 |
|
|
(*palette_update_fn)();
|
1247 |
|
|
}
|
1248 |
|
|
if (shared_fb_data->display_on && shared_fb_data->blank_on) {
|
1249 |
|
|
(*render_fn)(shared_fb_data->viewport_x, shared_fb_data->viewport_y, win_width, win_height);
|
1250 |
|
|
} else {
|
1251 |
|
|
// Just draw the initial blank screen.
|
1252 |
|
|
blackout();
|
1253 |
|
|
}
|
1254 |
|
|
}
|
1255 |
|
|
|
1256 |
|
|
static void
|
1257 |
|
|
handle_auxiliary_request(void)
|
1258 |
|
|
{
|
1259 |
|
|
synth_fb_auxiliary_request req;
|
1260 |
|
|
int result;
|
1261 |
|
|
|
1262 |
|
|
result = read(0, &req, sizeof(synth_fb_auxiliary_request));
|
1263 |
|
|
if (result <= 0) {
|
1264 |
|
|
// The I/O auxiliary has terminated, so assume the window has gone as well.
|
1265 |
|
|
exit(0);
|
1266 |
|
|
}
|
1267 |
|
|
DEBUG(2, "handle_auxiliary request %d\n", req.command);
|
1268 |
|
|
switch (req.command) {
|
1269 |
|
|
case SYNTH_FB_AUX_MAPPED:
|
1270 |
|
|
{
|
1271 |
|
|
handle_mapped(req.arg1);
|
1272 |
|
|
break;
|
1273 |
|
|
}
|
1274 |
|
|
case SYNTH_FB_AUX_ON:
|
1275 |
|
|
{
|
1276 |
|
|
// This is used when the target-side switches the display
|
1277 |
|
|
// off and back on, rather than just blanking it. Treat it
|
1278 |
|
|
// the same as blanking.
|
1279 |
|
|
DEBUG(1, "Target has switched the display on\n");
|
1280 |
|
|
shared_fb_data->display_on = 1;
|
1281 |
|
|
(*render_fn)(shared_fb_data->viewport_x, shared_fb_data->viewport_y, win_width, win_height);
|
1282 |
|
|
break;
|
1283 |
|
|
}
|
1284 |
|
|
case SYNTH_FB_AUX_OFF:
|
1285 |
|
|
{
|
1286 |
|
|
DEBUG(1, "Target has switched the display off\n");
|
1287 |
|
|
shared_fb_data->display_on = 0;
|
1288 |
|
|
blackout();
|
1289 |
|
|
break;
|
1290 |
|
|
}
|
1291 |
|
|
case SYNTH_FB_AUX_REDRAW:
|
1292 |
|
|
{
|
1293 |
|
|
DEBUG(1, "Auxiliary has requested a redraw\n");
|
1294 |
|
|
schedule_redraw(0, 0, x_win_width, x_win_height);
|
1295 |
|
|
}
|
1296 |
|
|
}
|
1297 |
|
|
DEBUG(2, "handle_auxiliary request done\n");
|
1298 |
|
|
}
|
1299 |
|
|
|
1300 |
|
|
// Report an error to ecosynth during initialization. This means a
|
1301 |
|
|
// single byte 0, followed by a string.
|
1302 |
|
|
static void
|
1303 |
|
|
report_init_error(char* msg)
|
1304 |
|
|
{
|
1305 |
|
|
write(1, "0", 1);
|
1306 |
|
|
write(1, msg, strlen(msg));
|
1307 |
|
|
close(1);
|
1308 |
|
|
exit(0);
|
1309 |
|
|
}
|
1310 |
|
|
|
1311 |
|
|
// ----------------------------------------------------------------------------
|
1312 |
|
|
int
|
1313 |
|
|
main(int argc, char** argv)
|
1314 |
|
|
{
|
1315 |
|
|
int size;
|
1316 |
|
|
fd_set read_fds;
|
1317 |
|
|
int max_fd;
|
1318 |
|
|
|
1319 |
|
|
atexit(&atexit_handler);
|
1320 |
|
|
signal(SIGPIPE, SIG_IGN);
|
1321 |
|
|
|
1322 |
|
|
if (12 != argc) {
|
1323 |
|
|
report_init_error("Incorrect number of arguments.");
|
1324 |
|
|
}
|
1325 |
|
|
target_id = (int) strtoul(argv[1], NULL, 0);
|
1326 |
|
|
target_depth = (int) strtoul(argv[2], NULL, 0);
|
1327 |
|
|
target_le = (int) strtoul(argv[3], NULL, 0);
|
1328 |
|
|
target_width = (int) strtoul(argv[4], NULL, 0);
|
1329 |
|
|
target_height = (int) strtoul(argv[5], NULL, 0);
|
1330 |
|
|
target_viewport_width = (int) strtoul(argv[6], NULL, 0);
|
1331 |
|
|
target_viewport_height = (int) strtoul(argv[7], NULL, 0);
|
1332 |
|
|
target_stride = (int) strtoul(argv[8], NULL, 0);
|
1333 |
|
|
target_number_pages = (int) strtoul(argv[9], NULL, 0);
|
1334 |
|
|
target_format = argv[10];
|
1335 |
|
|
config_magnification = (int) strtoul(argv[11], NULL, 0);
|
1336 |
|
|
|
1337 |
|
|
if ((target_depth != 1) && (target_depth != 2) && (target_depth != 4) && (target_depth != 8) && (target_depth != 16) && (target_depth != 32)) {
|
1338 |
|
|
report_init_error("Invalid target depth.");
|
1339 |
|
|
}
|
1340 |
|
|
if ((target_width < 16) || (target_width > 4096)) {
|
1341 |
|
|
report_init_error("Invalid target width.");
|
1342 |
|
|
}
|
1343 |
|
|
if ((target_height < 16) || (target_height > 4096)) {
|
1344 |
|
|
report_init_error("Invalid target height.");
|
1345 |
|
|
}
|
1346 |
|
|
if ((target_viewport_width < 16) || (target_viewport_width > target_width)) {
|
1347 |
|
|
report_init_error("Invalid target viewport width.");
|
1348 |
|
|
}
|
1349 |
|
|
if ((target_viewport_height < 16) || (target_viewport_height > target_height)) {
|
1350 |
|
|
report_init_error("Invalid target viewport height.");
|
1351 |
|
|
}
|
1352 |
|
|
if ((target_number_pages < 1) || (target_number_pages > 4)) {
|
1353 |
|
|
report_init_error("Invalid target number of pages.");
|
1354 |
|
|
}
|
1355 |
|
|
if ((config_magnification < 1) || (config_magnification > 4)) {
|
1356 |
|
|
report_init_error("Invalid config magnification.");
|
1357 |
|
|
}
|
1358 |
|
|
|
1359 |
|
|
host_display = XOpenDisplay(NULL);
|
1360 |
|
|
if (NULL == host_display) {
|
1361 |
|
|
report_init_error("Failed to open X display.");
|
1362 |
|
|
}
|
1363 |
|
|
img_fb = (unsigned int*) malloc(target_viewport_width * target_viewport_height * sizeof(int) * config_magnification * config_magnification);
|
1364 |
|
|
if (NULL == img_fb) {
|
1365 |
|
|
report_init_error("Failed to allocate XImage data.");
|
1366 |
|
|
}
|
1367 |
|
|
blackout();
|
1368 |
|
|
|
1369 |
|
|
// Use of tmpnam() is generally discouraged and generates a linker
|
1370 |
|
|
// warning, but only three temporary file names are needed and
|
1371 |
|
|
// there are no root privileges involved so security is not a big
|
1372 |
|
|
// issue. mkstemp() cannot easily be used with fifos.
|
1373 |
|
|
if (NULL == tmpnam(fifo_t2h_name)) {
|
1374 |
|
|
report_init_error("Failed to create unique file name for target->host fifo.");
|
1375 |
|
|
}
|
1376 |
|
|
if (0 != mkfifo(fifo_t2h_name, S_IRUSR | S_IWUSR)) {
|
1377 |
|
|
report_init_error("Failed to create target->host fifo.");
|
1378 |
|
|
}
|
1379 |
|
|
// Opening O_RDONLY or O_WRONLY will result in blocking until the
|
1380 |
|
|
// other end is open as well, which is not what is wanted here.
|
1381 |
|
|
// Instead we use the Linux feature of opening with O_RDWR which
|
1382 |
|
|
// gives non-blocking behaviour.
|
1383 |
|
|
fifo_t2h_created = 1;
|
1384 |
|
|
fifo_t2h_fd = open(fifo_t2h_name, O_RDWR);
|
1385 |
|
|
if (-1 == fifo_t2h_fd) {
|
1386 |
|
|
report_init_error("Failed to open target->host fifo.");
|
1387 |
|
|
}
|
1388 |
|
|
if (NULL == tmpnam(fifo_h2t_name)) {
|
1389 |
|
|
report_init_error("Failed to create unique file name for host->target fifo.");
|
1390 |
|
|
}
|
1391 |
|
|
if (0 != mkfifo(fifo_h2t_name, S_IRUSR | S_IWUSR)) {
|
1392 |
|
|
report_init_error("Failed to create host->target fifo.");
|
1393 |
|
|
}
|
1394 |
|
|
fifo_h2t_created = 1;
|
1395 |
|
|
fifo_h2t_fd = open(fifo_h2t_name, O_RDWR);
|
1396 |
|
|
if (-1 == fifo_h2t_fd) {
|
1397 |
|
|
report_init_error("Failed to open target->host fifo.");
|
1398 |
|
|
}
|
1399 |
|
|
|
1400 |
|
|
size = sizeof(synth_fb_data) + (target_height * target_stride * target_number_pages);
|
1401 |
|
|
if (NULL == tmpnam(shm_name)) {
|
1402 |
|
|
report_init_error("Failed to create unique file name for shared memory.");
|
1403 |
|
|
}
|
1404 |
|
|
shm_fd = open(shm_name, O_RDWR | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
|
1405 |
|
|
if (shm_fd < 0) {
|
1406 |
|
|
report_init_error("Failed to open file for shared memory region.");
|
1407 |
|
|
}
|
1408 |
|
|
shm_created = 1;
|
1409 |
|
|
if (ftruncate(shm_fd, size) < 0) {
|
1410 |
|
|
report_init_error("Failed to set shared memory file size.");
|
1411 |
|
|
}
|
1412 |
|
|
|
1413 |
|
|
shared_fb_data = (synth_fb_data*)mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, shm_fd, 0);
|
1414 |
|
|
if (shared_fb_data == (synth_fb_data*)MAP_FAILED) {
|
1415 |
|
|
report_init_error("Failed to mmap shared memory file.");
|
1416 |
|
|
}
|
1417 |
|
|
target_fb = &(shared_fb_data->framebuf[0]);
|
1418 |
|
|
|
1419 |
|
|
shared_fb_data->connected = 0;
|
1420 |
|
|
shared_fb_data->fifo_to_framebuf = -1;
|
1421 |
|
|
shared_fb_data->fifo_from_framebuf = -1;
|
1422 |
|
|
shared_fb_data->devid = target_id;
|
1423 |
|
|
shared_fb_data->sync_x0 = 0;
|
1424 |
|
|
shared_fb_data->sync_y0 = 0;
|
1425 |
|
|
shared_fb_data->sync_x1 = target_viewport_width;
|
1426 |
|
|
shared_fb_data->sync_y1 = target_viewport_height;
|
1427 |
|
|
shared_fb_data->display_on = 0;
|
1428 |
|
|
shared_fb_data->blank_on = 1;
|
1429 |
|
|
shared_fb_data->viewport_x = 0;
|
1430 |
|
|
shared_fb_data->viewport_y = 0;
|
1431 |
|
|
shared_fb_data->page_visible = 0;
|
1432 |
|
|
|
1433 |
|
|
render_fn = &dummy_render_fn;
|
1434 |
|
|
msync(shared_fb_data, size, MS_SYNC);
|
1435 |
|
|
|
1436 |
|
|
// Everything seems to be in order. Report back to the auxiliary.
|
1437 |
|
|
{
|
1438 |
|
|
char buf[513];
|
1439 |
|
|
if ((strlen(shm_name) + strlen(fifo_t2h_name) + strlen(fifo_h2t_name) + 3) > 512) {
|
1440 |
|
|
report_init_error("Temporary path names too long.");
|
1441 |
|
|
}
|
1442 |
|
|
buf[0] = '1';
|
1443 |
|
|
strcpy(&(buf[1]), shm_name);
|
1444 |
|
|
strcat(&(buf[1]), ";");
|
1445 |
|
|
strcat(&(buf[1]), fifo_t2h_name);
|
1446 |
|
|
strcat(&(buf[1]), ";");
|
1447 |
|
|
strcat(&(buf[1]), fifo_h2t_name);
|
1448 |
|
|
strcat(&(buf[1]), ";");
|
1449 |
|
|
write(1, buf, 2 + strlen(&(buf[1])));
|
1450 |
|
|
}
|
1451 |
|
|
|
1452 |
|
|
// Now we just loop, processing events. We want to select on file descriptor
|
1453 |
|
|
// 0 from the auxiliary, the X file descriptor, and the fifo t2h descriptor.
|
1454 |
|
|
// The latter may go away. X should never go away, and if the auxiliary goes
|
1455 |
|
|
// away we exit immediately.
|
1456 |
|
|
max_fd = MAX(ConnectionNumber(host_display), fifo_t2h_fd);
|
1457 |
|
|
while ( 1 ) {
|
1458 |
|
|
while (XPending(host_display) > 0) {
|
1459 |
|
|
handle_X_event();
|
1460 |
|
|
}
|
1461 |
|
|
FD_ZERO(&read_fds);
|
1462 |
|
|
FD_SET(0, &read_fds);
|
1463 |
|
|
FD_SET(ConnectionNumber(host_display), &read_fds);
|
1464 |
|
|
if (-1 != fifo_t2h_fd) {
|
1465 |
|
|
FD_SET(fifo_t2h_fd, &read_fds);
|
1466 |
|
|
}
|
1467 |
|
|
DEBUG(3, "framebuf main loop: selecting on 0x%08x\n", *(int*)&read_fds);
|
1468 |
|
|
do_redraw();
|
1469 |
|
|
if (select(max_fd + 1, &read_fds, NULL, NULL, NULL) >= 0) {
|
1470 |
|
|
if (FD_ISSET(0, &read_fds)) {
|
1471 |
|
|
DEBUG(2, "framebuf main loop: auxiliary request\n");
|
1472 |
|
|
handle_auxiliary_request();
|
1473 |
|
|
}
|
1474 |
|
|
if ((-1 != fifo_t2h_fd) && FD_ISSET(fifo_t2h_fd, &read_fds)) {
|
1475 |
|
|
DEBUG(2, "framebuf main loop: target request\n");
|
1476 |
|
|
handle_target_request();
|
1477 |
|
|
}
|
1478 |
|
|
if (FD_ISSET(ConnectionNumber(host_display), &read_fds)) {
|
1479 |
|
|
DEBUG(3, "framebuf main loop: X request\n");
|
1480 |
|
|
(void)XEventsQueued(host_display, QueuedAfterReading);
|
1481 |
|
|
}
|
1482 |
|
|
}
|
1483 |
|
|
}
|
1484 |
|
|
|
1485 |
|
|
exit(EXIT_SUCCESS);
|
1486 |
|
|
}
|
1487 |
|
|
#endif // INSTANTIATE_CONVERTER
|