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macemu/BasiliskII/src/Unix/video_x.cpp

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/*
* video_x.cpp - Video/graphics emulation, X11 specific stuff
*
* Basilisk II (C) 1997-2005 Christian Bauer
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* NOTES:
* The Ctrl key works like a qualifier for special actions:
* Ctrl-Tab = suspend DGA mode
* Ctrl-Esc = emergency quit
* Ctrl-F1 = mount floppy
* Ctrl-F5 = grab mouse (in windowed mode)
*/
#include "sysdeps.h"
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
#include <X11/extensions/XShm.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <errno.h>
#include <algorithm>
#ifdef HAVE_PTHREADS
# include <pthread.h>
#endif
#ifdef ENABLE_XF86_DGA
# include <X11/extensions/xf86dga.h>
#endif
#ifdef ENABLE_XF86_VIDMODE
# include <X11/extensions/xf86vmode.h>
#endif
#ifdef ENABLE_FBDEV_DGA
# include <sys/mman.h>
#endif
#include "cpu_emulation.h"
#include "main.h"
#include "adb.h"
#include "macos_util.h"
#include "prefs.h"
#include "user_strings.h"
#include "video.h"
#include "video_blit.h"
#define DEBUG 0
#include "debug.h"
// Supported video modes
static vector<video_mode> VideoModes;
// Display types
enum {
DISPLAY_WINDOW, // X11 window, using MIT SHM extensions if possible
DISPLAY_DGA // DGA fullscreen display
};
// Constants
const char KEYCODE_FILE_NAME[] = DATADIR "/keycodes";
static const int win_eventmask = KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask | PointerMotionMask | EnterWindowMask | ExposureMask | StructureNotifyMask;
static const int dga_eventmask = KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask | PointerMotionMask | StructureNotifyMask;
// Global variables
static int32 frame_skip; // Prefs items
static int16 mouse_wheel_mode;
static int16 mouse_wheel_lines;
static int display_type = DISPLAY_WINDOW; // See enum above
static bool local_X11; // Flag: X server running on local machine?
static uint8 *the_buffer = NULL; // Mac frame buffer (where MacOS draws into)
static uint8 *the_buffer_copy = NULL; // Copy of Mac frame buffer (for refreshed modes)
static uint32 the_buffer_size; // Size of allocated the_buffer
static bool redraw_thread_active = false; // Flag: Redraw thread installed
#ifdef HAVE_PTHREADS
static pthread_attr_t redraw_thread_attr; // Redraw thread attributes
static volatile bool redraw_thread_cancel; // Flag: Cancel Redraw thread
static volatile bool redraw_thread_cancel_ack; // Flag: Acknowledge for redraw thread cancellation
static pthread_t redraw_thread; // Redraw thread
#endif
static bool has_dga = false; // Flag: Video DGA capable
static bool has_vidmode = false; // Flag: VidMode extension available
#ifdef ENABLE_VOSF
static bool use_vosf = true; // Flag: VOSF enabled
#else
static const bool use_vosf = false; // VOSF not possible
#endif
static bool ctrl_down = false; // Flag: Ctrl key pressed
static bool caps_on = false; // Flag: Caps Lock on
static bool quit_full_screen = false; // Flag: DGA close requested from redraw thread
static bool emerg_quit = false; // Flag: Ctrl-Esc pressed, emergency quit requested from MacOS thread
static bool emul_suspended = false; // Flag: Emulator suspended
static bool classic_mode = false; // Flag: Classic Mac video mode
static bool use_keycodes = false; // Flag: Use keycodes rather than keysyms
static int keycode_table[256]; // X keycode -> Mac keycode translation table
// X11 variables
char *x_display_name = NULL; // X11 display name
Display *x_display = NULL; // X11 display handle
static int screen; // Screen number
static Window rootwin; // Root window and our window
static int num_depths = 0; // Number of available X depths
static int *avail_depths = NULL; // List of available X depths
static XColor black, white;
static unsigned long black_pixel, white_pixel;
static int eventmask;
static int xdepth; // Depth of X screen
static VisualFormat visualFormat;
static XVisualInfo visualInfo;
static Visual *vis;
static int color_class;
static bool x_native_byte_order; // XImage has native byte order?
static int rshift, rloss, gshift, gloss, bshift, bloss; // Pixel format of DirectColor/TrueColor modes
static Colormap cmap[2] = {0, 0}; // Colormaps for indexed modes (DGA needs two of them)
static XColor x_palette[256]; // Color palette to be used as CLUT and gamma table
static bool x_palette_changed = false; // Flag: Palette changed, redraw thread must set new colors
#ifdef ENABLE_FBDEV_DGA
static int fbdev_fd = -1;
#endif
#ifdef ENABLE_XF86_VIDMODE
static XF86VidModeModeInfo **x_video_modes = NULL; // Array of all available modes
static int num_x_video_modes;
#endif
// Mutex to protect palette
#ifdef HAVE_PTHREADS
static pthread_mutex_t x_palette_lock = PTHREAD_MUTEX_INITIALIZER;
#define LOCK_PALETTE pthread_mutex_lock(&x_palette_lock)
#define UNLOCK_PALETTE pthread_mutex_unlock(&x_palette_lock)
#else
#define LOCK_PALETTE
#define UNLOCK_PALETTE
#endif
// Mutex to protect frame buffer
#ifdef HAVE_PTHREADS
static pthread_mutex_t frame_buffer_lock = PTHREAD_MUTEX_INITIALIZER;
#define LOCK_FRAME_BUFFER pthread_mutex_lock(&frame_buffer_lock);
#define UNLOCK_FRAME_BUFFER pthread_mutex_unlock(&frame_buffer_lock);
#else
#define LOCK_FRAME_BUFFER
#define UNLOCK_FRAME_BUFFER
#endif
// Variables for non-VOSF incremental refresh
static const int sm_uptd[] = {4,1,6,3,0,5,2,7};
static int sm_no_boxes[] = {1,8,32,64,128,300};
static bool updt_box[17][17];
static int nr_boxes;
// Video refresh function
static void VideoRefreshInit(void);
static void (*video_refresh)(void);
// Prototypes
static void *redraw_func(void *arg);
// From main_unix.cpp
extern char *x_display_name;
extern Display *x_display;
// From sys_unix.cpp
extern void SysMountFirstFloppy(void);
// From clip_unix.cpp
extern void ClipboardSelectionClear(XSelectionClearEvent *);
extern void ClipboardSelectionRequest(XSelectionRequestEvent *);
/*
* monitor_desc subclass for X11 display
*/
class X11_monitor_desc : public monitor_desc {
public:
X11_monitor_desc(const vector<video_mode> &available_modes, video_depth default_depth, uint32 default_id) : monitor_desc(available_modes, default_depth, default_id) {}
~X11_monitor_desc() {}
virtual void switch_to_current_mode(void);
virtual void set_palette(uint8 *pal, int num);
bool video_open(void);
void video_close(void);
};
/*
* Utility functions
*/
// Map video_mode depth ID to numerical depth value
static inline int depth_of_video_mode(video_mode const & mode)
{
int depth = -1;
switch (mode.depth) {
case VDEPTH_1BIT:
depth = 1;
break;
case VDEPTH_2BIT:
depth = 2;
break;
case VDEPTH_4BIT:
depth = 4;
break;
case VDEPTH_8BIT:
depth = 8;
break;
case VDEPTH_16BIT:
depth = 16;
break;
case VDEPTH_32BIT:
depth = 32;
break;
default:
abort();
}
return depth;
}
// Map RGB color to pixel value (this only works in TrueColor/DirectColor visuals)
static inline uint32 map_rgb(uint8 red, uint8 green, uint8 blue, bool fix_byte_order = false)
{
uint32 val = ((red >> rloss) << rshift) | ((green >> gloss) << gshift) | ((blue >> bloss) << bshift);
if (fix_byte_order && !x_native_byte_order) {
// We have to fix byte order in the ExpandMap[]
// NOTE: this is only an optimization since Screen_blitter_init()
// could be arranged to choose an NBO or OBO (with
// byteswapping) Blit_Expand_X_To_Y() function
switch (visualFormat.depth) {
case 15: case 16:
val = do_byteswap_16(val);
break;
case 24: case 32:
val = do_byteswap_32(val);
break;
}
}
return val;
}
// Do we have a visual for handling the specified Mac depth? If so, set the
// global variables "xdepth", "visualInfo", "vis" and "color_class".
static bool find_visual_for_depth(video_depth depth)
{
D(bug("have_visual_for_depth(%d)\n", 1 << depth));
// 1-bit works always and uses default visual
if (depth == VDEPTH_1BIT) {
vis = DefaultVisual(x_display, screen);
visualInfo.visualid = XVisualIDFromVisual(vis);
int num = 0;
XVisualInfo *vi = XGetVisualInfo(x_display, VisualIDMask, &visualInfo, &num);
visualInfo = vi[0];
XFree(vi);
xdepth = visualInfo.depth;
color_class = visualInfo.c_class;
D(bug(" found visual ID 0x%02x, depth %d\n", visualInfo.visualid, xdepth));
return true;
}
// Calculate minimum and maximum supported X depth
int min_depth = 1, max_depth = 32;
switch (depth) {
#ifdef ENABLE_VOSF
case VDEPTH_2BIT:
case VDEPTH_4BIT: // VOSF blitters can convert 2/4/8-bit -> 8/16/32-bit
case VDEPTH_8BIT:
min_depth = 8;
max_depth = 32;
break;
#else
case VDEPTH_2BIT:
case VDEPTH_4BIT: // 2/4-bit requires VOSF blitters
return false;
case VDEPTH_8BIT: // 8-bit without VOSF requires an 8-bit visual
min_depth = 8;
max_depth = 8;
break;
#endif
case VDEPTH_16BIT: // 16-bit requires a 15/16-bit visual
min_depth = 15;
max_depth = 16;
break;
case VDEPTH_32BIT: // 32-bit requires a 24/32-bit visual
min_depth = 24;
max_depth = 32;
break;
}
D(bug(" minimum required X depth is %d, maximum supported X depth is %d\n", min_depth, max_depth));
// Try to find a visual for one of the color depths
bool visual_found = false;
for (int i=0; i<num_depths && !visual_found; i++) {
xdepth = avail_depths[i];
D(bug(" trying to find visual for depth %d\n", xdepth));
if (xdepth < min_depth || xdepth > max_depth)
continue;
// Determine best color class for this depth
switch (xdepth) {
case 1: // Try StaticGray or StaticColor
if (XMatchVisualInfo(x_display, screen, xdepth, StaticGray, &visualInfo)
|| XMatchVisualInfo(x_display, screen, xdepth, StaticColor, &visualInfo))
visual_found = true;
break;
case 8: // Need PseudoColor
if (XMatchVisualInfo(x_display, screen, xdepth, PseudoColor, &visualInfo))
visual_found = true;
break;
case 15:
case 16:
case 24:
case 32: // Try DirectColor first, as this will allow gamma correction
if (XMatchVisualInfo(x_display, screen, xdepth, DirectColor, &visualInfo)
|| XMatchVisualInfo(x_display, screen, xdepth, TrueColor, &visualInfo))
visual_found = true;
break;
default:
D(bug(" not a supported depth\n"));
break;
}
}
if (!visual_found)
return false;
// Visual was found
vis = visualInfo.visual;
color_class = visualInfo.c_class;
D(bug(" found visual ID 0x%02x, depth %d, class ", visualInfo.visualid, xdepth));
#if DEBUG
switch (color_class) {
case StaticGray: D(bug("StaticGray\n")); break;
case GrayScale: D(bug("GrayScale\n")); break;
case StaticColor: D(bug("StaticColor\n")); break;
case PseudoColor: D(bug("PseudoColor\n")); break;
case TrueColor: D(bug("TrueColor\n")); break;
case DirectColor: D(bug("DirectColor\n")); break;
}
#endif
return true;
}
// Add mode to list of supported modes
static void add_mode(uint32 width, uint32 height, uint32 resolution_id, uint32 bytes_per_row, video_depth depth)
{
video_mode mode;
mode.x = width;
mode.y = height;
mode.resolution_id = resolution_id;
mode.bytes_per_row = bytes_per_row;
mode.depth = depth;
VideoModes.push_back(mode);
}
// Add standard list of windowed modes for given color depth
static void add_window_modes(video_depth depth)
{
add_mode(512, 384, 0x80, TrivialBytesPerRow(512, depth), depth);
add_mode(640, 480, 0x81, TrivialBytesPerRow(640, depth), depth);
add_mode(800, 600, 0x82, TrivialBytesPerRow(800, depth), depth);
add_mode(1024, 768, 0x83, TrivialBytesPerRow(1024, depth), depth);
add_mode(1152, 870, 0x84, TrivialBytesPerRow(1152, depth), depth);
add_mode(1280, 1024, 0x85, TrivialBytesPerRow(1280, depth), depth);
add_mode(1600, 1200, 0x86, TrivialBytesPerRow(1600, depth), depth);
}
// Set Mac frame layout and base address (uses the_buffer/MacFrameBaseMac)
static void set_mac_frame_buffer(X11_monitor_desc &monitor, video_depth depth, bool native_byte_order)
{
#if !REAL_ADDRESSING && !DIRECT_ADDRESSING
int layout = FLAYOUT_DIRECT;
if (depth == VDEPTH_16BIT)
layout = (xdepth == 15) ? FLAYOUT_HOST_555 : FLAYOUT_HOST_565;
else if (depth == VDEPTH_32BIT)
layout = (xdepth == 24) ? FLAYOUT_HOST_888 : FLAYOUT_DIRECT;
if (native_byte_order)
MacFrameLayout = layout;
else
MacFrameLayout = FLAYOUT_DIRECT;
monitor.set_mac_frame_base(MacFrameBaseMac);
// Set variables used by UAE memory banking
const video_mode &mode = monitor.get_current_mode();
MacFrameBaseHost = the_buffer;
MacFrameSize = mode.bytes_per_row * mode.y;
InitFrameBufferMapping();
#else
monitor.set_mac_frame_base(Host2MacAddr(the_buffer));
#endif
D(bug("monitor.mac_frame_base = %08x\n", monitor.get_mac_frame_base()));
}
// Set window name and class
static void set_window_name(Window w, int name)
{
const char *str = GetString(name);
XStoreName(x_display, w, str);
XSetIconName(x_display, w, str);
XClassHint *hints;
hints = XAllocClassHint();
if (hints) {
hints->res_name = "BasiliskII";
hints->res_class = "BasiliskII";
XSetClassHint(x_display, w, hints);
XFree(hints);
}
}
// Set window input focus flag
static void set_window_focus(Window w)
{
XWMHints *hints = XAllocWMHints();
if (hints) {
hints->input = True;
hints->initial_state = NormalState;
hints->flags = InputHint | StateHint;
XSetWMHints(x_display, w, hints);
XFree(hints);
}
}
// Set WM_DELETE_WINDOW protocol on window (preventing it from being destroyed by the WM when clicking on the "close" widget)
static Atom WM_DELETE_WINDOW = (Atom)0;
static void set_window_delete_protocol(Window w)
{
WM_DELETE_WINDOW = XInternAtom(x_display, "WM_DELETE_WINDOW", false);
XSetWMProtocols(x_display, w, &WM_DELETE_WINDOW, 1);
}
// Wait until window is mapped/unmapped
void wait_mapped(Window w)
{
XEvent e;
do {
XMaskEvent(x_display, StructureNotifyMask, &e);
} while ((e.type != MapNotify) || (e.xmap.event != w));
}
void wait_unmapped(Window w)
{
XEvent e;
do {
XMaskEvent(x_display, StructureNotifyMask, &e);
} while ((e.type != UnmapNotify) || (e.xmap.event != w));
}
// Trap SHM errors
static bool shm_error = false;
static int (*old_error_handler)(Display *, XErrorEvent *);
static int error_handler(Display *d, XErrorEvent *e)
{
if (e->error_code == BadAccess) {
shm_error = true;
return 0;
} else
return old_error_handler(d, e);
}
/*
* Framebuffer allocation routines
*/
#ifdef ENABLE_VOSF
#include "vm_alloc.h"
static void *vm_acquire_framebuffer(uint32 size)
{
// always try to allocate framebuffer at the same address
static void *fb = VM_MAP_FAILED;
if (fb != VM_MAP_FAILED) {
if (vm_acquire_fixed(fb, size) < 0)
fb = VM_MAP_FAILED;
}
if (fb == VM_MAP_FAILED)
fb = vm_acquire(size, VM_MAP_DEFAULT | VM_MAP_32BIT);
return fb;
}
static inline void vm_release_framebuffer(void *fb, uint32 size)
{
vm_release(fb, size);
}
#endif
/*
* Display "driver" classes
*/
class driver_base {
public:
driver_base(X11_monitor_desc &m);
virtual ~driver_base();
virtual void update_palette(void);
virtual void suspend(void) {}
virtual void resume(void) {}
virtual void toggle_mouse_grab(void) {}
virtual void mouse_moved(int x, int y) { ADBMouseMoved(x, y); }
void disable_mouse_accel(void);
void restore_mouse_accel(void);
virtual void grab_mouse(void) {}
virtual void ungrab_mouse(void) {}
public:
X11_monitor_desc &monitor; // Associated video monitor
const video_mode &mode; // Video mode handled by the driver
bool init_ok; // Initialization succeeded (we can't use exceptions because of -fomit-frame-pointer)
Window w; // The window we draw into
int orig_accel_numer, orig_accel_denom, orig_threshold; // Original mouse acceleration
};
class driver_window;
static void update_display_window_vosf(driver_window *drv);
static void update_display_dynamic(int ticker, driver_window *drv);
static void update_display_static(driver_window *drv);
class driver_window : public driver_base {
friend void update_display_window_vosf(driver_window *drv);
friend void update_display_dynamic(int ticker, driver_window *drv);
friend void update_display_static(driver_window *drv);
public:
driver_window(X11_monitor_desc &monitor);
~driver_window();
void toggle_mouse_grab(void);
void mouse_moved(int x, int y);
void grab_mouse(void);
void ungrab_mouse(void);
private:
GC gc;
XImage *img;
bool have_shm; // Flag: SHM extensions available
XShmSegmentInfo shminfo;
Cursor mac_cursor;
bool mouse_grabbed; // Flag: mouse pointer grabbed, using relative mouse mode
int mouse_last_x, mouse_last_y; // Last mouse position (for relative mode)
};
class driver_dga;
static void update_display_dga_vosf(driver_dga *drv);
class driver_dga : public driver_base {
friend void update_display_dga_vosf(driver_dga *drv);
public:
driver_dga(X11_monitor_desc &monitor);
~driver_dga();
void suspend(void);
void resume(void);
protected:
struct FakeXImage {
int width, height; // size of image
int depth; // depth of image
int bytes_per_line; // accelerator to next line
FakeXImage(int w, int h, int d)
: width(w), height(h), depth(d)
{ bytes_per_line = TrivialBytesPerRow(width, DepthModeForPixelDepth(depth)); }
};
FakeXImage *img;
private:
Window suspend_win; // "Suspend" information window
void *fb_save; // Saved frame buffer for suspend/resume
};
static driver_base *drv = NULL; // Pointer to currently used driver object
#ifdef ENABLE_VOSF
# include "video_vosf.h"
#endif
driver_base::driver_base(X11_monitor_desc &m)
: monitor(m), mode(m.get_current_mode()), init_ok(false), w(0)
{
the_buffer = NULL;
the_buffer_copy = NULL;
XGetPointerControl(x_display, &orig_accel_numer, &orig_accel_denom, &orig_threshold);
}
driver_base::~driver_base()
{
ungrab_mouse();
restore_mouse_accel();
if (w) {
XUnmapWindow(x_display, w);
wait_unmapped(w);
XDestroyWindow(x_display, w);
}
XFlush(x_display);
XSync(x_display, false);
// Free frame buffer(s)
if (!use_vosf) {
if (the_buffer) {
free(the_buffer);
the_buffer = NULL;
}
if (the_buffer_copy) {
free(the_buffer_copy);
the_buffer_copy = NULL;
}
}
#ifdef ENABLE_VOSF
else {
// the_buffer shall always be mapped through vm_acquire() so that we can vm_protect() it at will
if (the_buffer != VM_MAP_FAILED) {
D(bug(" releasing the_buffer at %p (%d bytes)\n", the_buffer, the_buffer_size));
vm_release_framebuffer(the_buffer, the_buffer_size);
the_buffer = NULL;
}
if (the_host_buffer) {
D(bug(" freeing the_host_buffer at %p\n", the_host_buffer));
free(the_host_buffer);
the_host_buffer = NULL;
}
if (the_buffer_copy) {
D(bug(" freeing the_buffer_copy at %p\n", the_buffer_copy));
free(the_buffer_copy);
the_buffer_copy = NULL;
}
}
#endif
}
// Palette has changed
void driver_base::update_palette(void)
{
if (color_class == PseudoColor || color_class == DirectColor) {
int num = vis->map_entries;
if (!IsDirectMode(monitor.get_current_mode()) && color_class == DirectColor)
return; // Indexed mode on true color screen, don't set CLUT
XStoreColors(x_display, cmap[0], x_palette, num);
XStoreColors(x_display, cmap[1], x_palette, num);
}
XSync(x_display, false);
}
// Disable mouse acceleration
void driver_base::disable_mouse_accel(void)
{
XChangePointerControl(x_display, True, False, 1, 1, 0);
}
// Restore mouse acceleration to original value
void driver_base::restore_mouse_accel(void)
{
XChangePointerControl(x_display, True, True, orig_accel_numer, orig_accel_denom, orig_threshold);
}
/*
* Windowed display driver
*/
// Open display
driver_window::driver_window(X11_monitor_desc &m)
: driver_base(m), gc(0), img(NULL), have_shm(false), mac_cursor(0), mouse_grabbed(false)
{
int width = mode.x, height = mode.y;
int aligned_width = (width + 15) & ~15;
int aligned_height = (height + 15) & ~15;
// Set absolute mouse mode
ADBSetRelMouseMode(mouse_grabbed);
// Create window (setting background_pixel, border_pixel and colormap is
// mandatory when using a non-default visual; in 1-bit mode we use the
// default visual, so we can also use the default colormap)
XSetWindowAttributes wattr;
wattr.event_mask = eventmask = win_eventmask;
wattr.background_pixel = (vis == DefaultVisual(x_display, screen) ? black_pixel : 0);
wattr.border_pixel = 0;
wattr.colormap = (mode.depth == VDEPTH_1BIT ? DefaultColormap(x_display, screen) : cmap[0]);
w = XCreateWindow(x_display, rootwin, 0, 0, width, height, 0, xdepth,
InputOutput, vis, CWEventMask | CWBackPixel | CWBorderPixel | CWColormap, &wattr);
D(bug(" window created\n"));
// Set window name/class
set_window_name(w, STR_WINDOW_TITLE);
// Indicate that we want keyboard input
set_window_focus(w);
// Set delete protocol property
set_window_delete_protocol(w);
// Make window unresizable
{
XSizeHints *hints = XAllocSizeHints();
if (hints) {
hints->min_width = width;
hints->max_width = width;
hints->min_height = height;
hints->max_height = height;
hints->flags = PMinSize | PMaxSize;
XSetWMNormalHints(x_display, w, hints);
XFree(hints);
}
}
D(bug(" window attributes set\n"));
// Show window
XMapWindow(x_display, w);
wait_mapped(w);
D(bug(" window mapped\n"));
// 1-bit mode is big-endian; if the X server is little-endian, we can't
// use SHM because that doesn't allow changing the image byte order
bool need_msb_image = (mode.depth == VDEPTH_1BIT && XImageByteOrder(x_display) == LSBFirst);
// Try to create and attach SHM image
if (local_X11 && !need_msb_image && XShmQueryExtension(x_display)) {
// Create SHM image ("height + 2" for safety)
img = XShmCreateImage(x_display, vis, mode.depth == VDEPTH_1BIT ? 1 : xdepth, mode.depth == VDEPTH_1BIT ? XYBitmap : ZPixmap, 0, &shminfo, width, height);
D(bug(" shm image created\n"));
shminfo.shmid = shmget(IPC_PRIVATE, (aligned_height + 2) * img->bytes_per_line, IPC_CREAT | 0777);
the_buffer_copy = (uint8 *)shmat(shminfo.shmid, 0, 0);
shminfo.shmaddr = img->data = (char *)the_buffer_copy;
shminfo.readOnly = False;
// Try to attach SHM image, catching errors
shm_error = false;
old_error_handler = XSetErrorHandler(error_handler);
XShmAttach(x_display, &shminfo);
XSync(x_display, false);
XSetErrorHandler(old_error_handler);
if (shm_error) {
shmdt(shminfo.shmaddr);
XDestroyImage(img);
img = NULL;
shminfo.shmid = -1;
} else {
have_shm = true;
shmctl(shminfo.shmid, IPC_RMID, 0);
}
D(bug(" shm image attached\n"));
}
// Create normal X image if SHM doesn't work ("height + 2" for safety)
if (!have_shm) {
int bytes_per_row = (mode.depth == VDEPTH_1BIT ? aligned_width/8 : TrivialBytesPerRow(aligned_width, DepthModeForPixelDepth(xdepth)));
the_buffer_copy = (uint8 *)malloc((aligned_height + 2) * bytes_per_row);
img = XCreateImage(x_display, vis, mode.depth == VDEPTH_1BIT ? 1 : xdepth, mode.depth == VDEPTH_1BIT ? XYBitmap : ZPixmap, 0, (char *)the_buffer_copy, aligned_width, aligned_height, 32, bytes_per_row);
D(bug(" X image created\n"));
}
if (need_msb_image) {
img->byte_order = MSBFirst;
img->bitmap_bit_order = MSBFirst;
}
#ifdef ENABLE_VOSF
use_vosf = true;
// Allocate memory for frame buffer (SIZE is extended to page-boundary)
the_host_buffer = the_buffer_copy;
the_buffer_size = page_extend((aligned_height + 2) * img->bytes_per_line);
the_buffer = (uint8 *)vm_acquire_framebuffer(the_buffer_size);
the_buffer_copy = (uint8 *)malloc(the_buffer_size);
D(bug("the_buffer = %p, the_buffer_copy = %p, the_host_buffer = %p\n", the_buffer, the_buffer_copy, the_host_buffer));
#else
// Allocate memory for frame buffer
the_buffer = (uint8 *)malloc((aligned_height + 2) * img->bytes_per_line);
D(bug("the_buffer = %p, the_buffer_copy = %p\n", the_buffer, the_buffer_copy));
#endif
// Create GC
gc = XCreateGC(x_display, w, 0, 0);
XSetState(x_display, gc, black_pixel, white_pixel, GXcopy, AllPlanes);
// Create no_cursor
mac_cursor = XCreatePixmapCursor(x_display,
XCreatePixmap(x_display, w, 1, 1, 1),
XCreatePixmap(x_display, w, 1, 1, 1),
&black, &white, 0, 0);
XDefineCursor(x_display, w, mac_cursor);
// Init blitting routines
#ifdef ENABLE_VOSF
Screen_blitter_init(visualFormat, x_native_byte_order, depth_of_video_mode(mode));
#endif
// Set frame buffer base
set_mac_frame_buffer(monitor, mode.depth, x_native_byte_order);
// Everything went well
init_ok = true;
}
// Close display
driver_window::~driver_window()
{
if (have_shm) {
XShmDetach(x_display, &shminfo);
#ifdef ENABLE_VOSF
the_host_buffer = NULL; // don't free() in driver_base dtor
#else
the_buffer_copy = NULL; // don't free() in driver_base dtor
#endif
}
if (img) {
if (!have_shm)
img->data = NULL;
XDestroyImage(img);
}
if (have_shm) {
shmdt(shminfo.shmaddr);
shmctl(shminfo.shmid, IPC_RMID, 0);
}
if (gc)
XFreeGC(x_display, gc);
}
// Toggle mouse grab
void driver_window::toggle_mouse_grab(void)
{
if (mouse_grabbed)
ungrab_mouse();
else
grab_mouse();
}
// Grab mouse, switch to relative mouse mode
void driver_window::grab_mouse(void)
{
int result;
for (int i=0; i<10; i++) {
result = XGrabPointer(x_display, w, True, 0,
GrabModeAsync, GrabModeAsync, w, None, CurrentTime);
if (result != AlreadyGrabbed)
break;
Delay_usec(100000);
}
if (result == GrabSuccess) {
XStoreName(x_display, w, GetString(STR_WINDOW_TITLE_GRABBED));
ADBSetRelMouseMode(mouse_grabbed = true);
disable_mouse_accel();
}
}
// Ungrab mouse, switch to absolute mouse mode
void driver_window::ungrab_mouse(void)
{
if (mouse_grabbed) {
XUngrabPointer(x_display, CurrentTime);
XStoreName(x_display, w, GetString(STR_WINDOW_TITLE));
ADBSetRelMouseMode(mouse_grabbed = false);
restore_mouse_accel();
}
}
// Mouse moved
void driver_window::mouse_moved(int x, int y)
{
if (!mouse_grabbed) {
mouse_last_x = x; mouse_last_y = y;
ADBMouseMoved(x, y);
return;
}
// Warped mouse motion (this code is taken from SDL)
// Post first mouse event
int width = monitor.get_current_mode().x, height = monitor.get_current_mode().y;
int delta_x = x - mouse_last_x, delta_y = y - mouse_last_y;
mouse_last_x = x; mouse_last_y = y;
ADBMouseMoved(delta_x, delta_y);
// Only warp the pointer when it has reached the edge
const int MOUSE_FUDGE_FACTOR = 8;
if (x < MOUSE_FUDGE_FACTOR || x > (width - MOUSE_FUDGE_FACTOR)
|| y < MOUSE_FUDGE_FACTOR || y > (height - MOUSE_FUDGE_FACTOR)) {
XEvent event;
while (XCheckTypedEvent(x_display, MotionNotify, &event)) {
delta_x = x - mouse_last_x; delta_y = y - mouse_last_y;
mouse_last_x = x; mouse_last_y = y;
ADBMouseMoved(delta_x, delta_y);
}
mouse_last_x = width/2;
mouse_last_y = height/2;
XWarpPointer(x_display, None, w, 0, 0, 0, 0, mouse_last_x, mouse_last_y);
for (int i=0; i<10; i++) {
XMaskEvent(x_display, PointerMotionMask, &event);
if (event.xmotion.x > (mouse_last_x - MOUSE_FUDGE_FACTOR)
&& event.xmotion.x < (mouse_last_x + MOUSE_FUDGE_FACTOR)
&& event.xmotion.y > (mouse_last_y - MOUSE_FUDGE_FACTOR)
&& event.xmotion.y < (mouse_last_y + MOUSE_FUDGE_FACTOR))
break;
}
}
}
#if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA)
/*
* DGA display driver base class
*/
driver_dga::driver_dga(X11_monitor_desc &m)
: driver_base(m), suspend_win(0), fb_save(NULL), img(NULL)
{
}
driver_dga::~driver_dga()
{
XUngrabPointer(x_display, CurrentTime);
XUngrabKeyboard(x_display, CurrentTime);
if (img)
delete img;
}
// Suspend emulation
void driver_dga::suspend(void)
{
// Release ctrl key
ADBKeyUp(0x36);
ctrl_down = false;
// Lock frame buffer (this will stop the MacOS thread)
LOCK_FRAME_BUFFER;
// Save frame buffer
fb_save = malloc(mode.y * mode.bytes_per_row);
if (fb_save)
memcpy(fb_save, the_buffer, mode.y * mode.bytes_per_row);
// Close full screen display
#ifdef ENABLE_XF86_DGA
XF86DGADirectVideo(x_display, screen, 0);
#endif
XUngrabPointer(x_display, CurrentTime);
XUngrabKeyboard(x_display, CurrentTime);
restore_mouse_accel();
XUnmapWindow(x_display, w);
wait_unmapped(w);
// Open "suspend" window
XSetWindowAttributes wattr;
wattr.event_mask = KeyPressMask;
wattr.background_pixel = black_pixel;
suspend_win = XCreateWindow(x_display, rootwin, 0, 0, 512, 1, 0, xdepth,
InputOutput, vis, CWEventMask | CWBackPixel, &wattr);
set_window_name(suspend_win, STR_SUSPEND_WINDOW_TITLE);
set_window_focus(suspend_win);
XMapWindow(x_display, suspend_win);
emul_suspended = true;
}
// Resume emulation
void driver_dga::resume(void)
{
// Close "suspend" window
XDestroyWindow(x_display, suspend_win);
XSync(x_display, false);
// Reopen full screen display
XMapRaised(x_display, w);
wait_mapped(w);
XWarpPointer(x_display, None, rootwin, 0, 0, 0, 0, 0, 0);
XGrabKeyboard(x_display, rootwin, True, GrabModeAsync, GrabModeAsync, CurrentTime);
XGrabPointer(x_display, rootwin, True, PointerMotionMask | ButtonPressMask | ButtonReleaseMask, GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
disable_mouse_accel();
#ifdef ENABLE_XF86_DGA
XF86DGADirectVideo(x_display, screen, XF86DGADirectGraphics | XF86DGADirectKeyb | XF86DGADirectMouse);
XF86DGASetViewPort(x_display, screen, 0, 0);
#endif
XSync(x_display, false);
// the_buffer already contains the data to restore. i.e. since a temporary
// frame buffer is used when VOSF is actually used, fb_save is therefore
// not necessary.
#ifdef ENABLE_VOSF
if (use_vosf) {
LOCK_VOSF;
PFLAG_SET_ALL;
UNLOCK_VOSF;
memset(the_buffer_copy, 0, mode.bytes_per_row * mode.y);
}
#endif
// Restore frame buffer
if (fb_save) {
#ifdef ENABLE_VOSF
// Don't copy fb_save to the temporary frame buffer in VOSF mode
if (!use_vosf)
#endif
memcpy(the_buffer, fb_save, mode.y * mode.bytes_per_row);
free(fb_save);
fb_save = NULL;
}
// Unlock frame buffer (and continue MacOS thread)
UNLOCK_FRAME_BUFFER;
emul_suspended = false;
}
#endif
#ifdef ENABLE_FBDEV_DGA
/*
* fbdev DGA display driver
*/
const char FBDEVICES_FILE_NAME[] = DATADIR "/fbdevices";
const char FBDEVICE_FILE_NAME[] = "/dev/fb";
class driver_fbdev : public driver_dga {
public:
driver_fbdev(X11_monitor_desc &monitor);
~driver_fbdev();
};
// Open display
driver_fbdev::driver_fbdev(X11_monitor_desc &m) : driver_dga(m)
{
int width = mode.x, height = mode.y;
// Set absolute mouse mode
ADBSetRelMouseMode(false);
// Find the maximum depth available
int ndepths, max_depth(0);
int *depths = XListDepths(x_display, screen, &ndepths);
if (depths == NULL) {
printf("FATAL: Could not determine the maximal depth available\n");
return;
} else {
while (ndepths-- > 0) {
if (depths[ndepths] > max_depth)
max_depth = depths[ndepths];
}
}
// Get fbdevices file path from preferences
const char *fbd_path = PrefsFindString("fbdevicefile");
// Open fbdevices file
FILE *fp = fopen(fbd_path ? fbd_path : FBDEVICES_FILE_NAME, "r");
if (fp == NULL) {
char str[256];
sprintf(str, GetString(STR_NO_FBDEVICE_FILE_ERR), fbd_path ? fbd_path : FBDEVICES_FILE_NAME, strerror(errno));
ErrorAlert(str);
return;
}
int fb_depth; // supported depth
uint32 fb_offset; // offset used for mmap(2)
char fb_name[20];
char line[256];
bool device_found = false;
while (fgets(line, 255, fp)) {
// Read line
int len = strlen(line);
if (len == 0)
continue;
line[len - 1] = '\0';
// Comments begin with "#" or ";"
if ((line[0] == '#') || (line[0] == ';') || (line[0] == '\0'))
continue;
if ((sscanf(line, "%19s %d %x", fb_name, &fb_depth, &fb_offset) == 3)
&& (strcmp(fb_name, fb_name) == 0) && (fb_depth == max_depth)) {
device_found = true;
break;
}
}
// fbdevices file completely read
fclose(fp);
// Frame buffer name not found ? Then, display warning
if (!device_found) {
char str[256];
sprintf(str, GetString(STR_FBDEV_NAME_ERR), fb_name, max_depth);
ErrorAlert(str);
return;
}
// Create window
XSetWindowAttributes wattr;
wattr.event_mask = eventmask = dga_eventmask;
wattr.background_pixel = white_pixel;
wattr.override_redirect = True;
wattr.colormap = cmap[0];
w = XCreateWindow(x_display, rootwin,
0, 0, width, height,
0, xdepth, InputOutput, vis,
CWEventMask | CWBackPixel | CWOverrideRedirect | (fb_depth <= 8 ? CWColormap : 0),
&wattr);
// Set window name/class
set_window_name(w, STR_WINDOW_TITLE);
// Indicate that we want keyboard input
set_window_focus(w);
// Show window
XMapRaised(x_display, w);
wait_mapped(w);
// Grab mouse and keyboard
XGrabKeyboard(x_display, w, True,
GrabModeAsync, GrabModeAsync, CurrentTime);
XGrabPointer(x_display, w, True,
PointerMotionMask | ButtonPressMask | ButtonReleaseMask,
GrabModeAsync, GrabModeAsync, w, None, CurrentTime);
disable_mouse_accel();
// Calculate bytes per row
int bytes_per_row = TrivialBytesPerRow(mode.x, mode.depth);
// Map frame buffer
the_buffer_size = height * bytes_per_row;
if ((the_buffer = (uint8 *) mmap(NULL, the_buffer_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fbdev_fd, fb_offset)) == MAP_FAILED) {
if ((the_buffer = (uint8 *) mmap(NULL, the_buffer_size, PROT_READ | PROT_WRITE, MAP_SHARED, fbdev_fd, fb_offset)) == MAP_FAILED) {
char str[256];
sprintf(str, GetString(STR_FBDEV_MMAP_ERR), strerror(errno));
ErrorAlert(str);
return;
}
}
#if ENABLE_VOSF
#if REAL_ADDRESSING || DIRECT_ADDRESSING
// Screen_blitter_init() returns TRUE if VOSF is mandatory
// i.e. the framebuffer update function is not Blit_Copy_Raw
use_vosf = Screen_blitter_init(visualFormat, true, mode.depth);
if (use_vosf) {
// Allocate memory for frame buffer (SIZE is extended to page-boundary)
the_host_buffer = the_buffer;
the_buffer_size = page_extend((height + 2) * bytes_per_row);
the_buffer_copy = (uint8 *)malloc(the_buffer_size);
the_buffer = (uint8 *)vm_acquire_framebuffer(the_buffer_size);
// Fake image for DGA/VOSF mode to know about display bounds
img = new FakeXImage(width, height, depth_of_video_mode(mode));
}
#else
use_vosf = false;
#endif
#endif
// Set frame buffer base
const_cast<video_mode *>(&mode)->bytes_per_row = bytes_per_row;
const_cast<video_mode *>(&mode)->depth = DepthModeForPixelDepth(fb_depth);
set_mac_frame_buffer(monitor, mode.depth, true);
// Everything went well
init_ok = true;
}
// Close display
driver_fbdev::~driver_fbdev()
{
if (!use_vosf) {
if (the_buffer != MAP_FAILED) {
// don't free() the screen buffer in driver_base dtor
munmap(the_buffer, the_buffer_size);
the_buffer = NULL;
}
}
#ifdef ENABLE_VOSF
else {
if (the_host_buffer != MAP_FAILED) {
// don't free() the screen buffer in driver_base dtor
munmap(the_host_buffer, the_buffer_size);
the_host_buffer = NULL;
}
}
#endif
}
#endif
#ifdef ENABLE_XF86_DGA
/*
* XFree86 DGA display driver
*/
class driver_xf86dga : public driver_dga {
public:
driver_xf86dga(X11_monitor_desc &monitor);
~driver_xf86dga();
void update_palette(void);
void resume(void);
private:
int current_dga_cmap; // Number (0 or 1) of currently installed DGA colormap
};
// Open display
driver_xf86dga::driver_xf86dga(X11_monitor_desc &m)
: driver_dga(m), current_dga_cmap(0)
{
int width = mode.x, height = mode.y;
// Set relative mouse mode
ADBSetRelMouseMode(true);
#ifdef ENABLE_XF86_VIDMODE
// Switch to best mode
if (has_vidmode) {
int best = 0;
for (int i=1; i<num_x_video_modes; i++) {
if (x_video_modes[i]->hdisplay >= width && x_video_modes[i]->vdisplay >= height &&
x_video_modes[i]->hdisplay <= x_video_modes[best]->hdisplay && x_video_modes[i]->vdisplay <= x_video_modes[best]->vdisplay) {
best = i;
}
}
XF86VidModeSwitchToMode(x_display, screen, x_video_modes[best]);
XF86VidModeSetViewPort(x_display, screen, 0, 0);
XSync(x_display, false);
}
#endif
// Create window
XSetWindowAttributes wattr;
wattr.event_mask = eventmask = dga_eventmask;
wattr.override_redirect = True;
wattr.colormap = (mode.depth == VDEPTH_1BIT ? DefaultColormap(x_display, screen) : cmap[0]);
w = XCreateWindow(x_display, rootwin, 0, 0, width, height, 0, xdepth,
InputOutput, vis, CWEventMask | CWOverrideRedirect |
(color_class == DirectColor ? CWColormap : 0), &wattr);
// Set window name/class
set_window_name(w, STR_WINDOW_TITLE);
// Indicate that we want keyboard input
set_window_focus(w);
// Show window
XMapRaised(x_display, w);
wait_mapped(w);
// Establish direct screen connection
XMoveResizeWindow(x_display, w, 0, 0, width, height);
XWarpPointer(x_display, None, rootwin, 0, 0, 0, 0, 0, 0);
XGrabKeyboard(x_display, rootwin, True, GrabModeAsync, GrabModeAsync, CurrentTime);
XGrabPointer(x_display, rootwin, True, PointerMotionMask | ButtonPressMask | ButtonReleaseMask, GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
disable_mouse_accel();
int v_width, v_bank, v_size;
XF86DGAGetVideo(x_display, screen, (char **)&the_buffer, &v_width, &v_bank, &v_size);
XF86DGADirectVideo(x_display, screen, XF86DGADirectGraphics | XF86DGADirectKeyb | XF86DGADirectMouse);
XF86DGASetViewPort(x_display, screen, 0, 0);
XF86DGASetVidPage(x_display, screen, 0);
// Set colormap
if (!IsDirectMode(mode)) {
XSetWindowColormap(x_display, w, cmap[current_dga_cmap = 0]);
XF86DGAInstallColormap(x_display, screen, cmap[current_dga_cmap]);
}
XSync(x_display, false);
// Init blitting routines
int bytes_per_row = TrivialBytesPerRow((v_width + 7) & ~7, mode.depth);
#if ENABLE_VOSF
#if REAL_ADDRESSING || DIRECT_ADDRESSING
// Screen_blitter_init() returns TRUE if VOSF is mandatory
// i.e. the framebuffer update function is not Blit_Copy_Raw
use_vosf = Screen_blitter_init(visualFormat, x_native_byte_order, depth_of_video_mode(mode));
if (use_vosf) {
// Allocate memory for frame buffer (SIZE is extended to page-boundary)
the_host_buffer = the_buffer;
the_buffer_size = page_extend((height + 2) * bytes_per_row);
the_buffer_copy = (uint8 *)malloc(the_buffer_size);
the_buffer = (uint8 *)vm_acquire_framebuffer(the_buffer_size);
// Fake image for DGA/VOSF mode to know about display bounds
img = new FakeXImage((v_width + 7) & ~7, height, depth_of_video_mode(mode));
}
#else
use_vosf = false;
#endif
#endif
// Set frame buffer base
const_cast<video_mode *>(&mode)->bytes_per_row = bytes_per_row;
set_mac_frame_buffer(monitor, mode.depth, true);
// Everything went well
init_ok = true;
}
// Close display
driver_xf86dga::~driver_xf86dga()
{
XF86DGADirectVideo(x_display, screen, 0);
if (!use_vosf) {
// don't free() the screen buffer in driver_base dtor
the_buffer = NULL;
}
#ifdef ENABLE_VOSF
else {
// don't free() the screen buffer in driver_base dtor
the_host_buffer = NULL;
}
#endif
#ifdef ENABLE_XF86_VIDMODE
if (has_vidmode)
XF86VidModeSwitchToMode(x_display, screen, x_video_modes[0]);
#endif
}
// Palette has changed
void driver_xf86dga::update_palette(void)
{
driver_dga::update_palette();
current_dga_cmap ^= 1;
if (!IsDirectMode(monitor.get_current_mode()) && cmap[current_dga_cmap])
XF86DGAInstallColormap(x_display, screen, cmap[current_dga_cmap]);
}
// Resume emulation
void driver_xf86dga::resume(void)
{
driver_dga::resume();
if (!IsDirectMode(monitor.get_current_mode()))
XF86DGAInstallColormap(x_display, screen, cmap[current_dga_cmap]);
}
#endif
/*
* Initialization
*/
// Init keycode translation table
static void keycode_init(void)
{
bool use_kc = PrefsFindBool("keycodes");
if (use_kc) {
// Get keycode file path from preferences
const char *kc_path = PrefsFindString("keycodefile");
// Open keycode table
FILE *f = fopen(kc_path ? kc_path : KEYCODE_FILE_NAME, "r");
if (f == NULL) {
char str[256];
sprintf(str, GetString(STR_KEYCODE_FILE_WARN), kc_path ? kc_path : KEYCODE_FILE_NAME, strerror(errno));
WarningAlert(str);
return;
}
// Default translation table
for (int i=0; i<256; i++)
keycode_table[i] = -1;
// Search for server vendor string, then read keycodes
const char *vendor = ServerVendor(x_display);
// Force use of MacX mappings on MacOS X with Apple's X server
int dummy;
if (XQueryExtension(x_display, "Apple-DRI", &dummy, &dummy, &dummy))
vendor = "MacX";
bool vendor_found = false;
char line[256];
while (fgets(line, 255, f)) {
// Read line
int len = strlen(line);
if (len == 0)
continue;
line[len-1] = 0;
// Comments begin with "#" or ";"
if (line[0] == '#' || line[0] == ';' || line[0] == 0)
continue;
if (vendor_found) {
// Read keycode
int x_code, mac_code;
if (sscanf(line, "%d %d", &x_code, &mac_code) == 2)
keycode_table[x_code & 0xff] = mac_code;
else
break;
} else {
// Search for vendor string
if (strstr(vendor, line) == vendor)
vendor_found = true;
}
}
// Keycode file completely read
fclose(f);
use_keycodes = vendor_found;
// Vendor not found? Then display warning
if (!vendor_found) {
char str[256];
sprintf(str, GetString(STR_KEYCODE_VENDOR_WARN), vendor, kc_path ? kc_path : KEYCODE_FILE_NAME);
WarningAlert(str);
return;
}
}
}
// Open display for current mode
bool X11_monitor_desc::video_open(void)
{
D(bug("video_open()\n"));
const video_mode &mode = get_current_mode();
// Find best available X visual
if (!find_visual_for_depth(mode.depth)) {
ErrorAlert(STR_NO_XVISUAL_ERR);
return false;
}
// Determine the byte order of an XImage content
#ifdef WORDS_BIGENDIAN
x_native_byte_order = (XImageByteOrder(x_display) == MSBFirst);
#else
x_native_byte_order = (XImageByteOrder(x_display) == LSBFirst);
#endif
// Build up visualFormat structure
visualFormat.fullscreen = (display_type == DISPLAY_DGA);
visualFormat.depth = visualInfo.depth;
visualFormat.Rmask = visualInfo.red_mask;
visualFormat.Gmask = visualInfo.green_mask;
visualFormat.Bmask = visualInfo.blue_mask;
// Create color maps
if (color_class == PseudoColor || color_class == DirectColor) {
cmap[0] = XCreateColormap(x_display, rootwin, vis, AllocAll);
cmap[1] = XCreateColormap(x_display, rootwin, vis, AllocAll);
} else {
cmap[0] = XCreateColormap(x_display, rootwin, vis, AllocNone);
cmap[1] = XCreateColormap(x_display, rootwin, vis, AllocNone);
}
// Find pixel format of direct modes
if (color_class == DirectColor || color_class == TrueColor) {
rshift = gshift = bshift = 0;
rloss = gloss = bloss = 8;
uint32 mask;
for (mask=vis->red_mask; !(mask&1); mask>>=1)
++rshift;
for (; mask&1; mask>>=1)
--rloss;
for (mask=vis->green_mask; !(mask&1); mask>>=1)
++gshift;
for (; mask&1; mask>>=1)
--gloss;
for (mask=vis->blue_mask; !(mask&1); mask>>=1)
++bshift;
for (; mask&1; mask>>=1)
--bloss;
}
// Preset palette pixel values for CLUT or gamma table
if (color_class == DirectColor) {
int num = vis->map_entries;
for (int i=0; i<num; i++) {
int c = (i * 256) / num;
x_palette[i].pixel = map_rgb(c, c, c);
x_palette[i].flags = DoRed | DoGreen | DoBlue;
}
} else if (color_class == PseudoColor) {
for (int i=0; i<256; i++) {
x_palette[i].pixel = i;
x_palette[i].flags = DoRed | DoGreen | DoBlue;
}
}
// Load gray ramp to color map
int num = (color_class == DirectColor ? vis->map_entries : 256);
for (int i=0; i<num; i++) {
int c = (i * 256) / num;
x_palette[i].red = c * 0x0101;
x_palette[i].green = c * 0x0101;
x_palette[i].blue = c * 0x0101;
}
if (color_class == PseudoColor || color_class == DirectColor) {
XStoreColors(x_display, cmap[0], x_palette, num);
XStoreColors(x_display, cmap[1], x_palette, num);
}
#ifdef ENABLE_VOSF
// Load gray ramp to 8->16/32 expand map
if (!IsDirectMode(mode) && xdepth > 8)
for (int i=0; i<256; i++)
ExpandMap[i] = map_rgb(i, i, i, true);
#endif
// Create display driver object of requested type
switch (display_type) {
case DISPLAY_WINDOW:
drv = new driver_window(*this);
break;
#ifdef ENABLE_FBDEV_DGA
case DISPLAY_DGA:
drv = new driver_fbdev(*this);
break;
#endif
#ifdef ENABLE_XF86_DGA
case DISPLAY_DGA:
drv = new driver_xf86dga(*this);
break;
#endif
}
if (drv == NULL)
return false;
if (!drv->init_ok) {
delete drv;
drv = NULL;
return false;
}
#ifdef ENABLE_VOSF
if (use_vosf) {
// Initialize the VOSF system
if (!video_vosf_init(*this)) {
ErrorAlert(STR_VOSF_INIT_ERR);
return false;
}
}
#endif
// Initialize VideoRefresh function
VideoRefreshInit();
// Lock down frame buffer
XSync(x_display, false);
LOCK_FRAME_BUFFER;
// Start redraw/input thread
#ifdef USE_PTHREADS_SERVICES
redraw_thread_cancel = false;
Set_pthread_attr(&redraw_thread_attr, 0);
redraw_thread_active = (pthread_create(&redraw_thread, &redraw_thread_attr, redraw_func, NULL) == 0);
if (!redraw_thread_active) {
printf("FATAL: cannot create redraw thread\n");
return false;
}
#else
redraw_thread_active = true;
#endif
return true;
}
bool VideoInit(bool classic)
{
classic_mode = classic;
#ifdef ENABLE_VOSF
// Zero the mainBuffer structure
mainBuffer.dirtyPages = NULL;
mainBuffer.pageInfo = NULL;
#endif
// Check if X server runs on local machine
local_X11 = (strncmp(XDisplayName(x_display_name), ":", 1) == 0)
|| (strncmp(XDisplayName(x_display_name), "unix:", 5) == 0);
// Init keycode translation
keycode_init();
// Read prefs
frame_skip = PrefsFindInt32("frameskip");
mouse_wheel_mode = PrefsFindInt32("mousewheelmode");
mouse_wheel_lines = PrefsFindInt32("mousewheellines");
// Find screen and root window
screen = XDefaultScreen(x_display);
rootwin = XRootWindow(x_display, screen);
// Get sorted list of available depths
avail_depths = XListDepths(x_display, screen, &num_depths);
if (avail_depths == NULL) {
ErrorAlert(STR_UNSUPP_DEPTH_ERR);
return false;
}
std::sort(avail_depths, avail_depths + num_depths);
#ifdef ENABLE_FBDEV_DGA
// Frame buffer name
char fb_name[20];
// Could do fbdev DGA?
if ((fbdev_fd = open(FBDEVICE_FILE_NAME, O_RDWR)) != -1)
has_dga = true;
else
has_dga = false;
#endif
#ifdef ENABLE_XF86_DGA
// DGA available?
int dga_event_base, dga_error_base;
if (local_X11 && XF86DGAQueryExtension(x_display, &dga_event_base, &dga_error_base)) {
int dga_flags = 0;
XF86DGAQueryDirectVideo(x_display, screen, &dga_flags);
has_dga = dga_flags & XF86DGADirectPresent;
} else
has_dga = false;
#endif
#ifdef ENABLE_XF86_VIDMODE
// VidMode available?
int vm_event_base, vm_error_base;
has_vidmode = XF86VidModeQueryExtension(x_display, &vm_event_base, &vm_error_base);
if (has_vidmode)
XF86VidModeGetAllModeLines(x_display, screen, &num_x_video_modes, &x_video_modes);
#endif
// Find black and white colors
XParseColor(x_display, DefaultColormap(x_display, screen), "rgb:00/00/00", &black);
XAllocColor(x_display, DefaultColormap(x_display, screen), &black);
XParseColor(x_display, DefaultColormap(x_display, screen), "rgb:ff/ff/ff", &white);
XAllocColor(x_display, DefaultColormap(x_display, screen), &white);
black_pixel = BlackPixel(x_display, screen);
white_pixel = WhitePixel(x_display, screen);
// Get screen mode from preferences
const char *mode_str;
if (classic_mode)
mode_str = "win/512/342";
else
mode_str = PrefsFindString("screen");
// Determine display type and default dimensions
int default_width = 512, default_height = 384;
display_type = DISPLAY_WINDOW;
if (mode_str) {
if (sscanf(mode_str, "win/%d/%d", &default_width, &default_height) == 2) {
display_type = DISPLAY_WINDOW;
#ifdef ENABLE_FBDEV_DGA
} else if (has_dga && sscanf(mode_str, "dga/%19s", fb_name) == 1) {
display_type = DISPLAY_DGA;
default_width = -1; default_height = -1; // use entire screen
#endif
#ifdef ENABLE_XF86_DGA
} else if (has_dga && sscanf(mode_str, "dga/%d/%d", &default_width, &default_height) == 2) {
display_type = DISPLAY_DGA;
#endif
}
}
if (default_width <= 0)
default_width = DisplayWidth(x_display, screen);
else if (default_width > DisplayWidth(x_display, screen))
default_width = DisplayWidth(x_display, screen);
if (default_height <= 0)
default_height = DisplayHeight(x_display, screen);
else if (default_height > DisplayHeight(x_display, screen))
default_height = DisplayHeight(x_display, screen);
// Mac screen depth follows X depth
video_depth default_depth = VDEPTH_1BIT;
switch (DefaultDepth(x_display, screen)) {
case 8:
default_depth = VDEPTH_8BIT;
break;
case 15: case 16:
default_depth = VDEPTH_16BIT;
break;
case 24: case 32:
default_depth = VDEPTH_32BIT;
break;
}
// Construct list of supported modes
if (display_type == DISPLAY_WINDOW) {
if (classic)
add_mode(512, 342, 0x80, 64, VDEPTH_1BIT);
else {
for (unsigned d=VDEPTH_1BIT; d<=VDEPTH_32BIT; d++) {
if (find_visual_for_depth(video_depth(d)))
add_window_modes(video_depth(d));
}
}
} else
add_mode(default_width, default_height, 0x80, TrivialBytesPerRow(default_width, default_depth), default_depth);
if (VideoModes.empty()) {
ErrorAlert(STR_NO_XVISUAL_ERR);
return false;
}
// Find requested default mode with specified dimensions
uint32 default_id;
std::vector<video_mode>::const_iterator i, end = VideoModes.end();
for (i = VideoModes.begin(); i != end; ++i) {
if (i->x == default_width && i->y == default_height && i->depth == default_depth) {
default_id = i->resolution_id;
break;
}
}
if (i == end) { // not found, use first available mode
default_depth = VideoModes[0].depth;
default_id = VideoModes[0].resolution_id;
}
#if DEBUG
D(bug("Available video modes:\n"));
for (i = VideoModes.begin(); i != end; ++i) {
int bits = 1 << i->depth;
if (bits == 16)
bits = 15;
else if (bits == 32)
bits = 24;
D(bug(" %dx%d (ID %02x), %d colors\n", i->x, i->y, i->resolution_id, 1 << bits));
}
#endif
// Create X11_monitor_desc for this (the only) display
X11_monitor_desc *monitor = new X11_monitor_desc(VideoModes, default_depth, default_id);
VideoMonitors.push_back(monitor);
// Open display
return monitor->video_open();
}
/*
* Deinitialization
*/
// Close display
void X11_monitor_desc::video_close(void)
{
D(bug("video_close()\n"));
// Stop redraw thread
#ifdef USE_PTHREADS_SERVICES
if (redraw_thread_active) {
redraw_thread_cancel = true;
redraw_thread_cancel_ack = false;
pthread_join(redraw_thread, NULL);
while (!redraw_thread_cancel_ack) ;
}
#endif
redraw_thread_active = false;
// Unlock frame buffer
UNLOCK_FRAME_BUFFER;
XSync(x_display, false);
D(bug(" frame buffer unlocked\n"));
#ifdef ENABLE_VOSF
if (use_vosf) {
// Deinitialize VOSF
video_vosf_exit();
}
#endif
// Close display
delete drv;
drv = NULL;
// Free colormaps
if (cmap[0]) {
XFreeColormap(x_display, cmap[0]);
cmap[0] = 0;
}
if (cmap[1]) {
XFreeColormap(x_display, cmap[1]);
cmap[1] = 0;
}
}
void VideoExit(void)
{
// Close displays
vector<monitor_desc *>::iterator i, end = VideoMonitors.end();
for (i = VideoMonitors.begin(); i != end; ++i)
dynamic_cast<X11_monitor_desc *>(*i)->video_close();
#ifdef ENABLE_XF86_VIDMODE
// Free video mode list
if (x_video_modes) {
XFree(x_video_modes);
x_video_modes = NULL;
}
#endif
#ifdef ENABLE_FBDEV_DGA
// Close framebuffer device
if (fbdev_fd >= 0) {
close(fbdev_fd);
fbdev_fd = -1;
}
#endif
// Free depth list
if (avail_depths) {
XFree(avail_depths);
avail_depths = NULL;
}
}
/*
* Close down full-screen mode (if bringing up error alerts is unsafe while in full-screen mode)
*/
void VideoQuitFullScreen(void)
{
D(bug("VideoQuitFullScreen()\n"));
quit_full_screen = true;
}
/*
* Mac VBL interrupt
*/
void VideoInterrupt(void)
{
// Emergency quit requested? Then quit
if (emerg_quit)
QuitEmulator();
// Temporarily give up frame buffer lock (this is the point where
// we are suspended when the user presses Ctrl-Tab)
UNLOCK_FRAME_BUFFER;
LOCK_FRAME_BUFFER;
}
/*
* Set palette
*/
void X11_monitor_desc::set_palette(uint8 *pal, int num_in)
{
const video_mode &mode = get_current_mode();
LOCK_PALETTE;
// Convert colors to XColor array
int num_out = 256;
bool stretch = false;
if (IsDirectMode(mode)) {
// If X is in 565 mode we have to stretch the gamma table from 32 to 64 entries
num_out = vis->map_entries;
stretch = true;
}
XColor *p = x_palette;
for (int i=0; i<num_out; i++) {
int c = (stretch ? (i * num_in) / num_out : i);
p->red = pal[c*3 + 0] * 0x0101;
p->green = pal[c*3 + 1] * 0x0101;
p->blue = pal[c*3 + 2] * 0x0101;
p++;
}
#ifdef ENABLE_VOSF
// Recalculate pixel color expansion map
if (!IsDirectMode(mode) && xdepth > 8) {
for (int i=0; i<256; i++) {
int c = i & (num_in-1); // If there are less than 256 colors, we repeat the first entries (this makes color expansion easier)
ExpandMap[i] = map_rgb(pal[c*3+0], pal[c*3+1], pal[c*3+2], true);
}
// We have to redraw everything because the interpretation of pixel values changed
LOCK_VOSF;
PFLAG_SET_ALL;
UNLOCK_VOSF;
memset(the_buffer_copy, 0, mode.bytes_per_row * mode.y);
}
#endif
// Tell redraw thread to change palette
x_palette_changed = true;
UNLOCK_PALETTE;
}
/*
* Switch video mode
*/
void X11_monitor_desc::switch_to_current_mode(void)
{
// Close and reopen display
video_close();
video_open();
if (drv == NULL) {
ErrorAlert(STR_OPEN_WINDOW_ERR);
QuitEmulator();
}
}
/*
* Translate key event to Mac keycode, returns -1 if no keycode was found
* and -2 if the key was recognized as a hotkey
*/
static int kc_decode(KeySym ks, bool key_down)
{
switch (ks) {
case XK_A: case XK_a: return 0x00;
case XK_B: case XK_b: return 0x0b;
case XK_C: case XK_c: return 0x08;
case XK_D: case XK_d: return 0x02;
case XK_E: case XK_e: return 0x0e;
case XK_F: case XK_f: return 0x03;
case XK_G: case XK_g: return 0x05;
case XK_H: case XK_h: return 0x04;
case XK_I: case XK_i: return 0x22;
case XK_J: case XK_j: return 0x26;
case XK_K: case XK_k: return 0x28;
case XK_L: case XK_l: return 0x25;
case XK_M: case XK_m: return 0x2e;
case XK_N: case XK_n: return 0x2d;
case XK_O: case XK_o: return 0x1f;
case XK_P: case XK_p: return 0x23;
case XK_Q: case XK_q: return 0x0c;
case XK_R: case XK_r: return 0x0f;
case XK_S: case XK_s: return 0x01;
case XK_T: case XK_t: return 0x11;
case XK_U: case XK_u: return 0x20;
case XK_V: case XK_v: return 0x09;
case XK_W: case XK_w: return 0x0d;
case XK_X: case XK_x: return 0x07;
case XK_Y: case XK_y: return 0x10;
case XK_Z: case XK_z: return 0x06;
case XK_1: case XK_exclam: return 0x12;
case XK_2: case XK_at: return 0x13;
case XK_3: case XK_numbersign: return 0x14;
case XK_4: case XK_dollar: return 0x15;
case XK_5: case XK_percent: return 0x17;
case XK_6: return 0x16;
case XK_7: return 0x1a;
case XK_8: return 0x1c;
case XK_9: return 0x19;
case XK_0: return 0x1d;
case XK_grave: case XK_asciitilde: return 0x0a;
case XK_minus: case XK_underscore: return 0x1b;
case XK_equal: case XK_plus: return 0x18;
case XK_bracketleft: case XK_braceleft: return 0x21;
case XK_bracketright: case XK_braceright: return 0x1e;
case XK_backslash: case XK_bar: return 0x2a;
case XK_semicolon: case XK_colon: return 0x29;
case XK_apostrophe: case XK_quotedbl: return 0x27;
case XK_comma: case XK_less: return 0x2b;
case XK_period: case XK_greater: return 0x2f;
case XK_slash: case XK_question: return 0x2c;
case XK_Tab: if (ctrl_down) {if (key_down) drv->suspend(); return -2;} else return 0x30;
case XK_Return: return 0x24;
case XK_space: return 0x31;
case XK_BackSpace: return 0x33;
case XK_Delete: return 0x75;
case XK_Insert: return 0x72;
case XK_Home: case XK_Help: return 0x73;
case XK_End: return 0x77;
#ifdef __hpux
case XK_Prior: return 0x74;
case XK_Next: return 0x79;
#else
case XK_Page_Up: return 0x74;
case XK_Page_Down: return 0x79;
#endif
case XK_Control_L: return 0x36;
case XK_Control_R: return 0x36;
case XK_Shift_L: return 0x38;
case XK_Shift_R: return 0x38;
case XK_Alt_L: return 0x37;
case XK_Alt_R: return 0x37;
case XK_Meta_L: return 0x3a;
case XK_Meta_R: return 0x3a;
case XK_Menu: return 0x32;
case XK_Caps_Lock: return 0x39;
case XK_Num_Lock: return 0x47;
case XK_Up: return 0x3e;
case XK_Down: return 0x3d;
case XK_Left: return 0x3b;
case XK_Right: return 0x3c;
case XK_Escape: if (ctrl_down) {if (key_down) { quit_full_screen = true; emerg_quit = true; } return -2;} else return 0x35;
case XK_F1: if (ctrl_down) {if (key_down) SysMountFirstFloppy(); return -2;} else return 0x7a;
case XK_F2: return 0x78;
case XK_F3: return 0x63;
case XK_F4: return 0x76;
case XK_F5: if (ctrl_down) {if (key_down) drv->toggle_mouse_grab(); return -2;} else return 0x60;
case XK_F6: return 0x61;
case XK_F7: return 0x62;
case XK_F8: return 0x64;
case XK_F9: return 0x65;
case XK_F10: return 0x6d;
case XK_F11: return 0x67;
case XK_F12: return 0x6f;
case XK_Print: return 0x69;
case XK_Scroll_Lock: return 0x6b;
case XK_Pause: return 0x71;
#if defined(XK_KP_Prior) && defined(XK_KP_Left) && defined(XK_KP_Insert) && defined (XK_KP_End)
case XK_KP_0: case XK_KP_Insert: return 0x52;
case XK_KP_1: case XK_KP_End: return 0x53;
case XK_KP_2: case XK_KP_Down: return 0x54;
case XK_KP_3: case XK_KP_Next: return 0x55;
case XK_KP_4: case XK_KP_Left: return 0x56;
case XK_KP_5: case XK_KP_Begin: return 0x57;
case XK_KP_6: case XK_KP_Right: return 0x58;
case XK_KP_7: case XK_KP_Home: return 0x59;
case XK_KP_8: case XK_KP_Up: return 0x5b;
case XK_KP_9: case XK_KP_Prior: return 0x5c;
case XK_KP_Decimal: case XK_KP_Delete: return 0x41;
#else
case XK_KP_0: return 0x52;
case XK_KP_1: return 0x53;
case XK_KP_2: return 0x54;
case XK_KP_3: return 0x55;
case XK_KP_4: return 0x56;
case XK_KP_5: return 0x57;
case XK_KP_6: return 0x58;
case XK_KP_7: return 0x59;
case XK_KP_8: return 0x5b;
case XK_KP_9: return 0x5c;
case XK_KP_Decimal: return 0x41;
#endif
case XK_KP_Add: return 0x45;
case XK_KP_Subtract: return 0x4e;
case XK_KP_Multiply: return 0x43;
case XK_KP_Divide: return 0x4b;
case XK_KP_Enter: return 0x4c;
case XK_KP_Equal: return 0x51;
}
return -1;
}
static int event2keycode(XKeyEvent &ev, bool key_down)
{
KeySym ks;
int i = 0;
do {
ks = XLookupKeysym(&ev, i++);
int as = kc_decode(ks, key_down);
if (as >= 0)
return as;
if (as == -2)
return as;
} while (ks != NoSymbol);
return -1;
}
/*
* X event handling
*/
static void handle_events(void)
{
for (;;) {
XEvent event;
XDisplayLock();
if (!XCheckMaskEvent(x_display, eventmask, &event)) {
// Handle clipboard events
if (XCheckTypedEvent(x_display, SelectionRequest, &event))
ClipboardSelectionRequest(&event.xselectionrequest);
else if (XCheckTypedEvent(x_display, SelectionClear, &event))
ClipboardSelectionClear(&event.xselectionclear);
// Window "close" widget clicked
else if (XCheckTypedEvent(x_display, ClientMessage, &event)) {
if (event.xclient.format == 32 && event.xclient.data.l[0] == WM_DELETE_WINDOW) {
ADBKeyDown(0x7f); // Power key
ADBKeyUp(0x7f);
}
}
XDisplayUnlock();
break;
}
switch (event.type) {
// Mouse button
case ButtonPress: {
unsigned int button = event.xbutton.button;
if (button < 4)
ADBMouseDown(button - 1);
else if (button < 6) { // Wheel mouse
if (mouse_wheel_mode == 0) {
int key = (button == 5) ? 0x79 : 0x74; // Page up/down
ADBKeyDown(key);
ADBKeyUp(key);
} else {
int key = (button == 5) ? 0x3d : 0x3e; // Cursor up/down
for(int i=0; i<mouse_wheel_lines; i++) {
ADBKeyDown(key);
ADBKeyUp(key);
}
}
}
break;
}
case ButtonRelease: {
unsigned int button = event.xbutton.button;
if (button < 4)
ADBMouseUp(button - 1);
break;
}
// Mouse moved
case MotionNotify:
drv->mouse_moved(event.xmotion.x, event.xmotion.y);
break;
// Mouse entered window
case EnterNotify:
if (event.xcrossing.mode != NotifyGrab && event.xcrossing.mode != NotifyUngrab)
drv->mouse_moved(event.xmotion.x, event.xmotion.y);
break;
// Keyboard
case KeyPress: {
int code = -1;
if (use_keycodes) {
if (event2keycode(event.xkey, true) != -2) // This is called to process the hotkeys
code = keycode_table[event.xkey.keycode & 0xff];
} else
code = event2keycode(event.xkey, true);
if (code >= 0) {
if (!emul_suspended) {
if (code == 0x39) { // Caps Lock pressed
if (caps_on) {
ADBKeyUp(code);
caps_on = false;
} else {
ADBKeyDown(code);
caps_on = true;
}
} else
ADBKeyDown(code);
if (code == 0x36)
ctrl_down = true;
} else {
if (code == 0x31)
drv->resume(); // Space wakes us up
}
}
break;
}
case KeyRelease: {
int code = -1;
if (use_keycodes) {
if (event2keycode(event.xkey, false) != -2) // This is called to process the hotkeys
code = keycode_table[event.xkey.keycode & 0xff];
} else
code = event2keycode(event.xkey, false);
if (code >= 0 && code != 0x39) { // Don't propagate Caps Lock releases
ADBKeyUp(code);
if (code == 0x36)
ctrl_down = false;
}
break;
}
// Hidden parts exposed, force complete refresh of window
case Expose:
if (display_type == DISPLAY_WINDOW) {
const video_mode &mode = VideoMonitors[0]->get_current_mode();
#ifdef ENABLE_VOSF
if (use_vosf) { // VOSF refresh
LOCK_VOSF;
PFLAG_SET_ALL;
UNLOCK_VOSF;
memset(the_buffer_copy, 0, mode.bytes_per_row * mode.y);
}
else
#endif
if (frame_skip == 0) { // Dynamic refresh
int x1, y1;
for (y1=0; y1<16; y1++)
for (x1=0; x1<16; x1++)
updt_box[x1][y1] = true;
nr_boxes = 16 * 16;
} else // Static refresh
memset(the_buffer_copy, 0, mode.bytes_per_row * mode.y);
}
break;
}
XDisplayUnlock();
}
}
/*
* Window display update
*/
// Dynamic display update (variable frame rate for each box)
static void update_display_dynamic(int ticker, driver_window *drv)
{
int y1, y2, y2s, y2a, i, x1, xm, xmo, ymo, yo, yi, yil, xi;
int xil = 0;
int rxm = 0, rxmo = 0;
const video_mode &mode = drv->monitor.get_current_mode();
int bytes_per_row = mode.bytes_per_row;
int bytes_per_pixel = mode.bytes_per_row / mode.x;
int rx = mode.bytes_per_row / 16;
int ry = mode.y / 16;
int max_box;
y2s = sm_uptd[ticker % 8];
y2a = 8;
for (i = 0; i < 6; i++)
if (ticker % (2 << i))
break;
max_box = sm_no_boxes[i];
if (y2a) {
for (y1=0; y1<16; y1++) {
for (y2=y2s; y2 < ry; y2 += y2a) {
i = ((y1 * ry) + y2) * bytes_per_row;
for (x1=0; x1<16; x1++, i += rx) {
if (updt_box[x1][y1] == false) {
if (memcmp(&the_buffer_copy[i], &the_buffer[i], rx)) {
updt_box[x1][y1] = true;
nr_boxes++;
}
}
}
}
}
}
XDisplayLock();
if ((nr_boxes <= max_box) && (nr_boxes)) {
for (y1=0; y1<16; y1++) {
for (x1=0; x1<16; x1++) {
if (updt_box[x1][y1] == true) {
if (rxm == 0)
xm = x1;
rxm += rx;
updt_box[x1][y1] = false;
}
if (((updt_box[x1+1][y1] == false) || (x1 == 15)) && (rxm)) {
if ((rxmo != rxm) || (xmo != xm) || (yo != y1 - 1)) {
if (rxmo) {
xi = xmo * rx;
yi = ymo * ry;
xil = rxmo;
yil = (yo - ymo +1) * ry;
}
rxmo = rxm;
xmo = xm;
ymo = y1;
}
rxm = 0;
yo = y1;
}
if (xil) {
i = (yi * bytes_per_row) + xi;
for (y2=0; y2 < yil; y2++, i += bytes_per_row)
memcpy(&the_buffer_copy[i], &the_buffer[i], xil);
if (mode.depth == VDEPTH_1BIT) {
if (drv->have_shm)
XShmPutImage(x_display, drv->w, drv->gc, drv->img, xi * 8, yi, xi * 8, yi, xil * 8, yil, 0);
else
XPutImage(x_display, drv->w, drv->gc, drv->img, xi * 8, yi, xi * 8, yi, xil * 8, yil);
} else {
if (drv->have_shm)
XShmPutImage(x_display, drv->w, drv->gc, drv->img, xi / bytes_per_pixel, yi, xi / bytes_per_pixel, yi, xil / bytes_per_pixel, yil, 0);
else
XPutImage(x_display, drv->w, drv->gc, drv->img, xi / bytes_per_pixel, yi, xi / bytes_per_pixel, yi, xil / bytes_per_pixel, yil);
}
xil = 0;
}
if ((x1 == 15) && (y1 == 15) && (rxmo)) {
x1--;
xi = xmo * rx;
yi = ymo * ry;
xil = rxmo;
yil = (yo - ymo +1) * ry;
rxmo = 0;
}
}
}
nr_boxes = 0;
}
XDisplayUnlock();
}
// Static display update (fixed frame rate, but incremental)
static void update_display_static(driver_window *drv)
{
// Incremental update code
unsigned wide = 0, high = 0, x1, x2, y1, y2, i, j;
const video_mode &mode = drv->monitor.get_current_mode();
int bytes_per_row = mode.bytes_per_row;
int bytes_per_pixel = mode.bytes_per_row / mode.x;
uint8 *p, *p2;
// Check for first line from top and first line from bottom that have changed
y1 = 0;
for (j=0; j<mode.y; j++) {
if (memcmp(&the_buffer[j * bytes_per_row], &the_buffer_copy[j * bytes_per_row], bytes_per_row)) {
y1 = j;
break;
}
}
y2 = y1 - 1;
for (j=mode.y-1; j>=y1; j--) {
if (memcmp(&the_buffer[j * bytes_per_row], &the_buffer_copy[j * bytes_per_row], bytes_per_row)) {
y2 = j;
break;
}
}
high = y2 - y1 + 1;
// Check for first column from left and first column from right that have changed
if (high) {
if (mode.depth == VDEPTH_1BIT) {
x1 = mode.x - 1;
for (j=y1; j<=y2; j++) {
p = &the_buffer[j * bytes_per_row];
p2 = &the_buffer_copy[j * bytes_per_row];
for (i=0; i<(x1>>3); i++) {
if (*p != *p2) {
x1 = i << 3;
break;
}
p++; p2++;
}
}
x2 = x1;
for (j=y1; j<=y2; j++) {
p = &the_buffer[j * bytes_per_row];
p2 = &the_buffer_copy[j * bytes_per_row];
p += bytes_per_row;
p2 += bytes_per_row;
for (i=(mode.x>>3); i>(x2>>3); i--) {
p--; p2--;
if (*p != *p2) {
x2 = (i << 3) + 7;
break;
}
}
}
wide = x2 - x1 + 1;
// Update copy of the_buffer
if (high && wide) {
for (j=y1; j<=y2; j++) {
i = j * bytes_per_row + (x1 >> 3);
memcpy(the_buffer_copy + i, the_buffer + i, wide >> 3);
}
}
} else {
x1 = mode.x;
for (j=y1; j<=y2; j++) {
p = &the_buffer[j * bytes_per_row];
p2 = &the_buffer_copy[j * bytes_per_row];
for (i=0; i<x1*bytes_per_pixel; i++) {
if (*p != *p2) {
x1 = i / bytes_per_pixel;
break;
}
p++; p2++;
}
}
x2 = x1;
for (j=y1; j<=y2; j++) {
p = &the_buffer[j * bytes_per_row];
p2 = &the_buffer_copy[j * bytes_per_row];
p += bytes_per_row;
p2 += bytes_per_row;
for (i=mode.x*bytes_per_pixel; i>x2*bytes_per_pixel; i--) {
p--;
p2--;
if (*p != *p2) {
x2 = i / bytes_per_pixel;
break;
}
}
}
wide = x2 - x1;
// Update copy of the_buffer
if (high && wide) {
for (j=y1; j<=y2; j++) {
i = j * bytes_per_row + x1 * bytes_per_pixel;
memcpy(the_buffer_copy + i, the_buffer + i, bytes_per_pixel * wide);
}
}
}
}
// Refresh display
XDisplayLock();
if (high && wide) {
if (drv->have_shm)
XShmPutImage(x_display, drv->w, drv->gc, drv->img, x1, y1, x1, y1, wide, high, 0);
else
XPutImage(x_display, drv->w, drv->gc, drv->img, x1, y1, x1, y1, wide, high);
}
XDisplayUnlock();
}
/*
* Screen refresh functions
*/
// We suggest the compiler to inline the next two functions so that it
// may specialise the code according to the current screen depth and
// display type. A clever compiler would do that job by itself though...
// NOTE: update_display_vosf is inlined too
static inline void possibly_quit_dga_mode()
{
// Quit DGA mode if requested (something terrible has happened and we
// want to give control back to the user)
if (quit_full_screen) {
quit_full_screen = false;
delete drv;
drv = NULL;
}
}
static inline void possibly_ungrab_mouse()
{
// Ungrab mouse if requested (something terrible has happened and we
// want to give control back to the user)
if (quit_full_screen) {
quit_full_screen = false;
if (drv)
drv->ungrab_mouse();
}
}
static inline void handle_palette_changes(void)
{
LOCK_PALETTE;
if (x_palette_changed) {
x_palette_changed = false;
XDisplayLock();
drv->update_palette();
XDisplayUnlock();
}
UNLOCK_PALETTE;
}
static void video_refresh_dga(void)
{
// Quit DGA mode if requested
possibly_quit_dga_mode();
}
#ifdef ENABLE_VOSF
#if REAL_ADDRESSING || DIRECT_ADDRESSING
static void video_refresh_dga_vosf(void)
{
// Quit DGA mode if requested
possibly_quit_dga_mode();
// Update display (VOSF variant)
static int tick_counter = 0;
if (++tick_counter >= frame_skip) {
tick_counter = 0;
if (mainBuffer.dirty) {
LOCK_VOSF;
update_display_dga_vosf(static_cast<driver_dga *>(drv));
UNLOCK_VOSF;
}
}
}
#endif
static void video_refresh_window_vosf(void)
{
// Ungrab mouse if requested
possibly_ungrab_mouse();
// Update display (VOSF variant)
static int tick_counter = 0;
if (++tick_counter >= frame_skip) {
tick_counter = 0;
if (mainBuffer.dirty) {
XDisplayLock();
LOCK_VOSF;
update_display_window_vosf(static_cast<driver_window *>(drv));
UNLOCK_VOSF;
XSync(x_display, false); // Let the server catch up
XDisplayUnlock();
}
}
}
#endif // def ENABLE_VOSF
static void video_refresh_window_static(void)
{
// Ungrab mouse if requested
possibly_ungrab_mouse();
// Update display (static variant)
static int tick_counter = 0;
if (++tick_counter >= frame_skip) {
tick_counter = 0;
update_display_static(static_cast<driver_window *>(drv));
}
}
static void video_refresh_window_dynamic(void)
{
// Ungrab mouse if requested
possibly_ungrab_mouse();
// Update display (dynamic variant)
static int tick_counter = 0;
tick_counter++;
update_display_dynamic(tick_counter, static_cast<driver_window *>(drv));
}
/*
* Thread for screen refresh, input handling etc.
*/
static void VideoRefreshInit(void)
{
// TODO: set up specialised 8bpp VideoRefresh handlers ?
if (display_type == DISPLAY_DGA) {
#if ENABLE_VOSF && (REAL_ADDRESSING || DIRECT_ADDRESSING)
if (use_vosf)
video_refresh = video_refresh_dga_vosf;
else
#endif
video_refresh = video_refresh_dga;
}
else {
#ifdef ENABLE_VOSF
if (use_vosf)
video_refresh = video_refresh_window_vosf;
else
#endif
if (frame_skip == 0)
video_refresh = video_refresh_window_dynamic;
else
video_refresh = video_refresh_window_static;
}
}
// This function is called on non-threaded platforms from a timer interrupt
void VideoRefresh(void)
{
// We need to check redraw_thread_active to inhibit refreshed during
// mode changes on non-threaded platforms
if (!redraw_thread_active)
return;
// Handle X events
handle_events();
// Handle palette changes
handle_palette_changes();
// Update display
video_refresh();
}
const int VIDEO_REFRESH_HZ = 60;
const int VIDEO_REFRESH_DELAY = 1000000 / VIDEO_REFRESH_HZ;
#ifdef USE_PTHREADS_SERVICES
static void *redraw_func(void *arg)
{
int fd = ConnectionNumber(x_display);
uint64 start = GetTicks_usec();
int64 ticks = 0;
uint64 next = GetTicks_usec() + VIDEO_REFRESH_DELAY;
while (!redraw_thread_cancel) {
int64 delay = next - GetTicks_usec();
if (delay < -VIDEO_REFRESH_DELAY) {
// We are lagging far behind, so we reset the delay mechanism
next = GetTicks_usec();
} else if (delay <= 0) {
// Delay expired, refresh display
handle_events();
handle_palette_changes();
video_refresh();
next += VIDEO_REFRESH_DELAY;
ticks++;
} else {
// No display refresh pending, check for X events
fd_set readfds;
FD_ZERO(&readfds);
FD_SET(fd, &readfds);
struct timeval timeout;
timeout.tv_sec = 0;
timeout.tv_usec = delay;
if (select(fd+1, &readfds, NULL, NULL, &timeout) > 0)
handle_events();
}
}
uint64 end = GetTicks_usec();
D(bug("%lld refreshes in %lld usec = %f refreshes/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
redraw_thread_cancel_ack = true;
return NULL;
}
#endif
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