+++ /dev/null
-/*
- * TinyPTC x11 v0.7.3 X Direct Graphics Access Extension v2 target
- * Copyright (C) 2001-2002 Alessandro Gatti <a.gatti@tiscali.it>
- *
- * http://www.sourceforge.net/projects/tinyptc/
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-/* #includes */
-
-#include <X11/Xlib.h>
-#include <X11/Xutil.h>
-#include <X11/extensions/xf86dga.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <limits.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include "tinyptc.h"
-
-#ifdef __PTC_XDGA2__
-
-#define __PTC_FROM_SOURCE
-
-#include "xdga2.h"
-
-/* Open the screen */
-
-int
-ptc_open (char *title, int width, int height)
-{
- /* Check for the effective UID of the running process */
- if (geteuid ())
- {
- return PTC_FAILURE;
- }
- /* Open a display on the current root window */
- ptc_display = XOpenDisplay (NULL);
- if (ptc_display == NULL)
- {
- return PTC_FAILURE;
- }
- /* Get the default screen associated with the previously opened display */
- ptc_screen = DefaultScreen (ptc_display);
- /* Get the default visual */
- ptc_visual = DefaultVisual (ptc_display, ptc_screen);
-
- /* Check for DGA extension avaliability */
- if (!XDGAQueryExtension (ptc_display, &ptc_dga_event_base, &ptc_error_base))
- {
- XCloseDisplay (ptc_display);
- return PTC_FAILURE;
- }
- /* Check for version 2.x of the extension */
- ptc_dga_major_version = 0;
- if (!XDGAQueryVersion
- (ptc_display, &ptc_dga_major_version, &ptc_dga_minor_version)
- || (ptc_dga_major_version < 2))
- {
- XCloseDisplay (ptc_display);
- return PTC_FAILURE;
- }
- /* Enable framebuffer access */
- if (!XDGAOpenFramebuffer (ptc_display, ptc_screen))
- {
- XCloseDisplay (ptc_display);
- return PTC_FAILURE;
- }
- /* Get all the modelines */
- ptc_dga_mode = XDGAQueryModes (ptc_display, ptc_screen, &ptc_dga_modes);
- ptc_dga_emulate_fullscreen = True;
-#ifdef __PTC_ENABLE_CONVERSIONS__
- ptc_dga_mode_32 = INT_MIN;
- ptc_dga_mode_24 = INT_MIN;
- ptc_dga_mode_16 = INT_MIN;
- ptc_dga_mode_15 = INT_MIN;
-#endif /* __PTC_ENABLE_CONVERSIONS__ */
- ptc_dga_new_mode = INT_MIN;
- /* Search for desired mode in parameter list */
- for (ptc_dga_counter = 0; ptc_dga_counter < ptc_dga_modes;
- ptc_dga_counter++)
- {
- if ((ptc_dga_mode[ptc_dga_counter].viewportWidth == width)
- && (ptc_dga_mode[ptc_dga_counter].viewportHeight == height))
- {
-#ifdef __PTC_ENABLE_CONVERSIONS__
- /* Get the right videomode for each colordepth */
- if (ptc_dga_mode[ptc_dga_counter].depth == 24)
- {
- if (ptc_dga_mode[ptc_dga_counter].bitsPerPixel == 32)
- {
- ptc_dga_mode_32 = ptc_dga_counter;
- ptc_dga_emulate_fullscreen = False;
- }
- if (ptc_dga_mode[ptc_dga_counter].bitsPerPixel == 24)
- {
- ptc_dga_mode_24 = ptc_dga_counter;
- ptc_dga_emulate_fullscreen = False;
- }
- }
- if (ptc_dga_mode[ptc_dga_counter].bitsPerPixel == 16)
- {
- if (ptc_dga_mode[ptc_dga_counter].depth == 15)
- {
- ptc_dga_mode_15 = ptc_dga_counter;
- ptc_dga_emulate_fullscreen = False;
- }
- if (ptc_dga_mode[ptc_dga_counter].depth == 16)
- {
- ptc_dga_mode_16 = ptc_dga_counter;
- ptc_dga_emulate_fullscreen = False;
- }
- }
-#else
- /* Get the right videomode */
- if ((ptc_dga_mode[ptc_dga_counter].bitsPerPixel == 32)
- && (ptc_dga_mode[ptc_dga_counter].depth == 32))
- {
- ptc_dga_new_mode = ptc_dga_counter;
- ptc_dga_emulate_fullscreen = False;
- break;
- }
-#endif /* __PTC_ENABLE_CONVERSIONS__ */
- }
- }
-
-#ifdef __PTC_ENABLE_CONVERSIONS__
- /* Simple heuristics for getting the best videomode and the right
- * converter for that videomode */
- if (ptc_dga_mode_32 == INT_MIN)
- {
- if (ptc_dga_mode_24 == INT_MIN)
- {
- if (ptc_dga_mode_16 == INT_MIN)
- {
- if (ptc_dga_mode_15 == INT_MIN)
- {
- }
- else
- {
- ptc_convert =
- ptc_request_converter (15,
- ptc_dga_mode[ptc_dga_mode_15].
- redMask,
- ptc_dga_mode[ptc_dga_mode_15].
- greenMask,
- ptc_dga_mode[ptc_dga_mode_15].
- blueMask);
- if (!ptc_convert)
- {
- ptc_dga_new_mode = INT_MIN;
- }
- else
- {
- ptc_dga_new_mode = ptc_dga_mode_15;
- ptc_dga_output_pitch = 2;
- }
- }
- }
- else
- {
- ptc_convert =
- ptc_request_converter (16,
- ptc_dga_mode[ptc_dga_mode_16].
- redMask,
- ptc_dga_mode[ptc_dga_mode_16].
- greenMask,
- ptc_dga_mode[ptc_dga_mode_16].
- blueMask);
- if (!ptc_convert)
- {
- ptc_dga_new_mode = INT_MIN;
- }
- else
- {
- ptc_dga_new_mode = ptc_dga_mode_16;
- ptc_dga_output_pitch = 2;
- }
- }
- }
- else
- {
- ptc_convert =
- ptc_request_converter (24, ptc_dga_mode[ptc_dga_mode_24].redMask,
- ptc_dga_mode[ptc_dga_mode_24].greenMask,
- ptc_dga_mode[ptc_dga_mode_24].blueMask);
- if (!ptc_convert)
- {
- ptc_dga_new_mode = INT_MIN;
- }
- else
- {
- ptc_dga_new_mode = ptc_dga_mode_24;
- ptc_dga_output_pitch = 3;
- }
- }
- }
- else
- {
- ptc_convert =
- ptc_request_converter (32, ptc_dga_mode[ptc_dga_mode_32].redMask,
- ptc_dga_mode[ptc_dga_mode_32].greenMask,
- ptc_dga_mode[ptc_dga_mode_32].blueMask);
- if (!ptc_convert)
- {
- ptc_dga_new_mode = INT_MIN;
- }
- else
- {
- ptc_dga_new_mode = ptc_dga_mode_32;
- ptc_dga_output_pitch = 4;
- }
- }
-#else
- ptc_dga_output_pitch = 4;
-#endif /* __PTC_ENABLE_CONVERSIONS__ */
-
-#ifdef __PTC_BEST_VIDEOMODE__
- /* It works for fullscreen emulation only */
- if (ptc_dga_emulate_fullscreen)
- {
- /* Set up loop */
-#ifdef __PTC_ENABLE_CONVERSIONS__
- ptc_dga_32.best_delta = INT_MAX;
- ptc_dga_24.best_delta = INT_MAX;
- ptc_dga_16.best_delta = INT_MAX;
- ptc_dga_15.best_delta = INT_MAX;
- ptc_dga_32.best_videomode = INT_MIN;
- ptc_dga_24.best_videomode = INT_MIN;
- ptc_dga_16.best_videomode = INT_MIN;
- ptc_dga_15.best_videomode = INT_MIN;
-#else
- ptc_dga_best_delta = INT_MAX;
- ptc_dga_best_videomode = INT_MIN;
-#endif /* __PTC_ENABLE_CONVERSIONS__ */
- /* Check for all avaliable modes */
- for (ptc_dga_counter = 0; ptc_dga_counter < ptc_dga_modes;
- ptc_dga_counter++)
- {
- if ((ptc_dga_mode[ptc_dga_counter].viewportWidth >= width)
- && (ptc_dga_mode[ptc_dga_counter].viewportHeight >= height))
- {
- ptc_dga_best_x_delta =
- ptc_dga_mode[ptc_dga_counter].viewportWidth - width;
- ptc_dga_best_x_delta *= ptc_dga_best_x_delta;
- ptc_dga_best_y_delta =
- ptc_dga_mode[ptc_dga_counter].viewportHeight - height;
- ptc_dga_best_y_delta *= ptc_dga_best_y_delta;
-
- /* Check if the mode fits better than the previous one */
-
-#ifdef __PTC_ENABLE_CONVERSIONS__
- if (ptc_dga_mode[ptc_dga_counter].depth == 24)
- {
- if (ptc_dga_mode[ptc_dga_counter].bitsPerPixel == 32)
- {
- if (ptc_dga_best_x_delta + ptc_dga_best_y_delta <
- ptc_dga_32.best_delta)
- {
- ptc_dga_32.best_delta =
- ptc_dga_best_x_delta + ptc_dga_best_y_delta;
- ptc_dga_32.best_videomode = ptc_dga_counter;
- }
- }
- if (ptc_dga_mode[ptc_dga_counter].bitsPerPixel == 24)
- {
- if (ptc_dga_best_x_delta + ptc_dga_best_y_delta <
- ptc_dga_24.best_delta)
- {
- ptc_dga_24.best_delta =
- ptc_dga_best_x_delta + ptc_dga_best_y_delta;
- ptc_dga_24.best_videomode = ptc_dga_counter;
- }
- }
- }
- if (ptc_dga_mode[ptc_dga_counter].bitsPerPixel == 16)
- {
- if (ptc_dga_mode[ptc_dga_counter].depth == 15)
- {
- if (ptc_dga_best_x_delta + ptc_dga_best_y_delta <
- ptc_dga_15.best_delta)
- {
- ptc_dga_15.best_delta =
- ptc_dga_best_x_delta + ptc_dga_best_y_delta;
- ptc_dga_15.best_videomode = ptc_dga_counter;
- }
- }
- if (ptc_dga_mode[ptc_dga_counter].depth == 16)
- {
- if (ptc_dga_best_x_delta + ptc_dga_best_y_delta <
- ptc_dga_16.best_delta)
- {
- ptc_dga_16.best_delta =
- ptc_dga_best_x_delta + ptc_dga_best_y_delta;
- ptc_dga_16.best_videomode = ptc_dga_counter;
- }
- }
- }
-#else
- /* Set up next iteration */
- ptc_dga_best_delta =
- ptc_dga_best_x_delta + ptc_dga_best_y_delta;
- ptc_dga_best_videomode = ptc_dga_counter;
-#endif /* __PTC_ENABLE_CONVERSIONS__ */
- }
- }
- }
-
-#ifdef __PTC_ENABLE_CONVERSIONS__
- /* Simple heuristics for getting the best videomode and the right
- * converter for that videomode */
-
- if (ptc_dga_32.best_videomode == INT_MIN)
- {
- if (ptc_dga_24.best_videomode == INT_MIN)
- {
- if (ptc_dga_16.best_videomode == INT_MIN)
- {
- if (ptc_dga_15.best_videomode == INT_MIN)
- {
- }
- else
- {
- ptc_convert =
- ptc_request_converter (15,
- ptc_dga_mode[ptc_dga_15.
- best_videomode].
- redMask,
- ptc_dga_mode[ptc_dga_15.
- best_videomode].
- greenMask,
- ptc_dga_mode[ptc_dga_15.
- best_videomode].
- blueMask);
- if (!ptc_convert)
- {
- ptc_dga_new_mode = INT_MIN;
- }
- else
- {
- ptc_dga_new_mode = ptc_dga_15.best_videomode;
- ptc_dga_output_pitch = 2;
- }
- }
- }
- else
- {
-
- ptc_convert =
- ptc_request_converter (16,
- ptc_dga_mode[ptc_dga_16.
- best_videomode].redMask,
- ptc_dga_mode[ptc_dga_16.
- best_videomode].greenMask,
- ptc_dga_mode[ptc_dga_16.
- best_videomode].blueMask);
- if (!ptc_convert)
- {
- ptc_dga_new_mode = INT_MIN;
- }
- else
- {
- ptc_dga_new_mode = ptc_dga_16.best_videomode;
- ptc_dga_output_pitch = 2;
- }
- }
- }
- else
- {
-
- ptc_convert =
- ptc_request_converter (24,
- ptc_dga_mode[ptc_dga_24.best_videomode].
- redMask,
- ptc_dga_mode[ptc_dga_24.best_videomode].
- greenMask,
- ptc_dga_mode[ptc_dga_24.best_videomode].
- blueMask);
- if (!ptc_convert)
- {
- ptc_dga_new_mode = INT_MIN;
- }
- else
- {
- ptc_dga_new_mode = ptc_dga_24.best_videomode;
- ptc_dga_output_pitch = 3;
- }
- }
- }
- else
- {
- ptc_convert =
- ptc_request_converter (32,
- ptc_dga_mode[ptc_dga_32.best_videomode].
- redMask,
- ptc_dga_mode[ptc_dga_32.best_videomode].
- greenMask,
- ptc_dga_mode[ptc_dga_32.best_videomode].
- blueMask);
- if (!ptc_convert)
- {
- ptc_dga_new_mode = INT_MIN;
- }
- else
- {
- ptc_dga_new_mode = ptc_dga_32.best_videomode;
- ptc_dga_output_pitch = 4;
- }
- }
-#else
- ptc_dga_output_pitch = 4;
- ptc_dga_new_mode = ptc_dga_best_videomode;
-#endif /* __PTC_ENABLE_CONVERSIONS__ */
-#endif /* __PTC_BEST_VIDEOMODE__ */
-
- /* No suitable mode found */
- if (ptc_dga_new_mode == INT_MIN)
- {
- XFree (ptc_dga_mode);
- XCloseDisplay (ptc_display);
- return PTC_FAILURE;
- }
- /* Try to switch mode */
- ptc_dga_device =
- XDGASetMode (ptc_display, ptc_screen, ptc_dga_mode[ptc_dga_new_mode].num);
- if (ptc_dga_device == NULL)
- {
- XFree (ptc_dga_mode);
- XCloseDisplay (ptc_display);
- return PTC_FAILURE;
- }
- /* Clear event queue */
- XFlush (ptc_display);
- /* Leave root mode */
- setuid (getuid ());
- /* Get viewport parameters */
- ptc_screen_width = ptc_dga_device->mode.viewportWidth;
- ptc_screen_height = ptc_dga_device->mode.viewportHeight;
- /* Get framebuffer address */
- ptc_dga_framebuffer_address = (char *)ptc_dga_device->data;
-
-
- /* Set fullscreen emulation up */
- if (ptc_dga_emulate_fullscreen)
- {
- /* Get effective framebuffer address */
- ptc_framebuffer_start =
- ptc_dga_device->mode.bytesPerScanline *
- ((ptc_screen_height - height) / 2) +
- (((ptc_screen_width - width) / 2) * ptc_dga_output_pitch);
- }
- else
- {
- /* Ignore offsets */
- ptc_framebuffer_start = 0;
- }
- ptc_dga_video_length =
- ptc_dga_device->mode.bytesPerScanline *
- ptc_dga_device->mode.viewportHeight;
-
- ptc_dga_first_page_address = ptc_dga_framebuffer_address + ptc_framebuffer_start;
- ptc_dga_second_page_address =
- ptc_dga_first_page_address + ptc_dga_video_length;
-
- /* Set the final viewport */
- XDGASetViewport (ptc_display, ptc_screen, 0, 0, XDGAFlipRetrace);
- /* Select the input events that should be reported */
- XDGASelectInput (ptc_display, ptc_screen, KeyPressMask | KeyReleaseMask);
- /* Clear event queue */
- XFlush (ptc_display);
- /* Clear video memory */
- memset (ptc_dga_device->data, 0x00, ptc_dga_video_length * 2);
- /* Save the buffer size */
- ptc_viewport_width = width;
- ptc_viewport_height = height;
- ptc_dga_first_page = False;
- return PTC_SUCCESS;
-}
-
-/* Update the screen */
-
-int
-ptc_update (void *buffer)
-{
- char *ptc_vram_pointer;
-
- /* This is here just to keep the c++ compiler happy */
- char *ptc_buffer;
-
- ptc_buffer=(char *)buffer;
-
- ptc_framebuffer_index = 0;
-#ifdef __PTC_ENABLE_CONVERSIONS__
- ptc_source_index = 0;
- ptc_destination_index = 0;
-#endif /* __PTC_ENABLE_CONVERSIONS__ */
-
- /* Get the right memory area to write into */
- if (ptc_dga_first_page == True)
- {
- ptc_vram_pointer = ptc_dga_first_page_address;
- }
- else
- {
- ptc_vram_pointer = ptc_dga_second_page_address;
- }
-
- /* Do the blit line by line */
- for (ptc_blitcounter = 0; ptc_blitcounter < ptc_viewport_height;
- ptc_blitcounter++)
- {
-#ifdef __PTC_ENABLE_CONVERSIONS__
- /* Conversion */
- ptc_convert (ptc_buffer + ptc_source_index,
- ptc_vram_pointer + ptc_destination_index,
- ptc_viewport_width);
- /* Pointers update */
- ptc_source_index += ptc_viewport_width * sizeof (int);
- ptc_destination_index += ptc_dga_device->mode.bytesPerScanline;
-#else
- /* Data copy */
- memcpy (ptc_vram_pointer + ptc_framebuffer_index, ptc_buffer,
- ptc_viewport_width * sizeof (int));
- ptc_buffer += ptc_viewport_width * sizeof (int);
- /* Set up offsets */
- ptc_framebuffer_index += ptc_dga_device->mode.bytesPerScanline;
-#endif /* __PTC_ENABLE_CONVERSIONS__ */
- }
-
- /* Wait for retrace */
- while (XDGAGetViewportStatus (ptc_display, ptc_screen));
-
- /* Flip the two pages */
- if (ptc_dga_first_page == True)
- {
- XDGASetViewport (ptc_display, ptc_screen, 0, 0, XDGAFlipImmediate);
- }
- else
- {
- XDGASetViewport (ptc_display, ptc_screen, 0,
- ptc_dga_device->mode.viewportHeight,
- XDGAFlipImmediate);
- }
- ptc_dga_first_page = !ptc_dga_first_page;
-
- /* Process incoming events */
- if (ptc_process_events ())
- {
-#ifdef __PTC_CLEANUP_CALLBACK__
- ptc_cleanup_callback ();
-#endif /* __PTC_CLEANUP_CALLBACK__ */
- ptc_close ();
- exit (0);
- }
- return PTC_SUCCESS;
-}
-
-/* Process events */
-
-int
-ptc_process_events (void)
-{
- XDGAEvent ptc_dga_event;
- KeySym ptc_keysym;
- XKeyEvent ptc_dga_keyevent;
- /* Check if there are events waiting in the display's queue */
- if (XPending (ptc_display))
- {
- /* Get the next event in queue */
- XNextEvent (ptc_display, (XEvent *) & ptc_dga_event);
- ptc_dga_event.type -= ptc_dga_event_base;
-
- /* Check if it's a keypress event */
- if (ptc_dga_event.type == KeyPress)
- {
- /* Translate the event */
- XDGAKeyEventToXKeyEvent (&ptc_dga_event.xkey, &ptc_dga_keyevent);
- /* Get the keysym */
- ptc_keysym = XLookupKeysym (&ptc_dga_keyevent, 0);
- /* Check if the key pressed was a function one */
- if ((ptc_keysym >> 8) == __PTC_FUNCTION_KEY__)
- {
- /* Check if it was the escape key */
- if ((ptc_keysym & 0xFF) == __PTC_ESCAPE_KEY__)
- {
- return PTC_SUCCESS;
- }
- }
- }
- }
- return PTC_FAILURE;
-}
-
-/* Close the screen */
-
-void
-ptc_close (void)
-{
- /* Switch back to the previous video mode */
- XDGASetMode (ptc_display, ptc_screen, 0);
- /* Disable framebuffer access */
- XDGACloseFramebuffer (ptc_display, ptc_screen);
- /* Close the display */
- XCloseDisplay (ptc_display);
- /* Deallocate the buffer */
- if (ptc_buffer)
- {
- free (ptc_buffer);
- }
-}
-
-#endif /* __PTC_XDGA2__ */
projects / ccbs / blobdiff