src/video/photon/SDL_ph_video.c
author Sam Lantinga <slouken@libsdl.org>
Thu, 14 Feb 2002 02:15:15 +0000
changeset 279 04351f59b051
parent 266 c6abdda2f666
child 283 3d8b6b9f1e18
permissions -rw-r--r--
Mike Gorchak added some QNX tweaks, including OpenGL support
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Library General Public
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    License as published by the Free Software Foundation; either
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    version 2 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Library General Public License for more details.
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    You should have received a copy of the GNU Library General Public
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    License along with this library; if not, write to the Free
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#ifdef SAVE_RCSID
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static char rcsid =
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 "@(#) $Id$";
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include "SDL.h"
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#include "SDL_error.h"
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#include "SDL_timer.h"
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#include "SDL_thread.h"
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#include "SDL_video.h"
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#include "SDL_mouse.h"
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#include "SDL_endian.h"
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#include "SDL_sysvideo.h"
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#include "SDL_pixels_c.h"
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#include "SDL_events_c.h"
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#include "SDL_ph_video.h"
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#include "SDL_ph_modes_c.h"
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#include "SDL_ph_image_c.h"
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#include "SDL_ph_events_c.h"
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#include "SDL_ph_mouse_c.h"
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#include "SDL_ph_wm_c.h"
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#include "SDL_phyuv_c.h"
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#include "blank_cursor.h"
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static int ph_VideoInit(_THIS, SDL_PixelFormat *vformat);
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static SDL_Surface *ph_SetVideoMode(_THIS, SDL_Surface *current,
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                int width, int height, int bpp, Uint32 flags);
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static int ph_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors);
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static void ph_VideoQuit(_THIS);
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static void ph_DeleteDevice(SDL_VideoDevice *device);
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static void ph_GL_SwapBuffers(_THIS);
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#ifdef HAVE_OPENGL
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PdOpenGLContext_t* OGLContext=NULL;
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#endif /* HAVE_OPENGL */
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static int ph_Available(void)
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{
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        return 1;
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}
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static SDL_VideoDevice *ph_CreateDevice(int devindex)
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{
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    SDL_VideoDevice *device;
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    /* Initialize all variables that we clean on shutdown */
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    device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));
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    if ( device ) {
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        memset(device, 0, (sizeof *device));
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        device->hidden = (struct SDL_PrivateVideoData *)
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                malloc((sizeof *device->hidden));
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        device->gl_data = NULL;
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    }
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    if ( (device == NULL) || (device->hidden == NULL) ) {
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        SDL_OutOfMemory();
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        ph_DeleteDevice(device);
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        return(0);
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    }
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    memset(device->hidden, 0, (sizeof *device->hidden));
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    /* Set the driver flags */
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    device->handles_any_size = 1; /* JB not true for fullscreen */
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    /* Set the function pointers */
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    device->CreateYUVOverlay = ph_CreateYUVOverlay;
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    device->VideoInit = ph_VideoInit;
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    device->ListModes = ph_ListModes;
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    device->SetVideoMode = ph_SetVideoMode;
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    device->ToggleFullScreen =  ph_ToggleFullScreen;
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    device->UpdateMouse = NULL;	
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    device->SetColors = ph_SetColors;
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    device->UpdateRects = NULL; /* ph_ResizeImage; */
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    device->VideoQuit = ph_VideoQuit;
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    device->AllocHWSurface = ph_AllocHWSurface;
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    device->CheckHWBlit = NULL;
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    device->FillHWRect = NULL;
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    device->SetHWColorKey = NULL;
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    device->SetHWAlpha = NULL;
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    device->LockHWSurface = ph_LockHWSurface;
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    device->UnlockHWSurface = ph_UnlockHWSurface;
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    device->FlipHWSurface = ph_FlipHWSurface;
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    device->FreeHWSurface = ph_FreeHWSurface;
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    device->SetCaption = ph_SetCaption;
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    device->SetIcon = NULL;
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    device->IconifyWindow = ph_IconifyWindow;
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    device->GrabInput = NULL;
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    device->GetWMInfo = NULL;
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    device->FreeWMCursor = ph_FreeWMCursor;
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    device->CreateWMCursor = ph_CreateWMCursor;
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    device->ShowWMCursor = ph_ShowWMCursor;
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    device->WarpWMCursor = ph_WarpWMCursor;
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    device->CheckMouseMode = ph_CheckMouseMode;
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    device->InitOSKeymap = ph_InitOSKeymap;
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    device->PumpEvents = ph_PumpEvents;
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    /* OpenGL support. */
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    device->GL_LoadLibrary = NULL;
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    device->GL_GetProcAddress = NULL;
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    device->GL_GetAttribute = NULL;
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    device->GL_MakeCurrent = NULL;
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#ifdef HAVE_OPENGL
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    device->GL_SwapBuffers = ph_GL_SwapBuffers;
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#else
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    device->GL_SwapBuffers = NULL;
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#endif /* HAVE_OPENGL */
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    device->free = ph_DeleteDevice;
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    return device;
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}
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VideoBootStrap ph_bootstrap = {
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        "photon", "QNX Photon video output",
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	ph_Available, ph_CreateDevice
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};
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static void ph_DeleteDevice(SDL_VideoDevice *device)
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{
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    if ( device ) {
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        if ( device->hidden ) {
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            free(device->hidden);
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            device->hidden = NULL;
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        }
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        if ( device->gl_data ) {
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            free(device->gl_data);
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            device->gl_data = NULL;
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        }
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        free(device);
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        device = NULL;
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    }
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}
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static int ph_VideoInit(_THIS, SDL_PixelFormat *vformat)
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{
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	PtArg_t arg[1];
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	PhDim_t dim;
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	PgColor_t ph_palette[_Pg_MAX_PALETTE];
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	int i;
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	unsigned long *tempptr;
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	int rtnval;
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//	PgDisplaySettings_t mysettings;
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	PgVideoModeInfo_t my_mode_info;
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	PgHWCaps_t my_hwcaps;
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	if( NULL == ( event = malloc( EVENT_SIZE ) ) )
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	   exit( EXIT_FAILURE );
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	/* Create a widget 'window' to capture events */
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    dim.w=0; //JB test320;
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    dim.h=0; //JB test240;
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    //We need to return BytesPerPixel as it in used by CreateRGBsurface
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    PtSetArg(&arg[0], Pt_ARG_DIM, &dim,0);
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/*    
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    PtSetArg(&arg[1], Pt_ARG_RESIZE_FLAGS, Pt_TRUE, Pt_RESIZE_XY_AS_REQUIRED);
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    PtSetArg(&arg[2], Pt_ARG_WINDOW_STATE, Pt_TRUE, Ph_WM_STATE_ISFRONT |
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                        Ph_WM_STATE_ISMAX |
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                        Ph_WM_STATE_ISFOCUS);
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    PtSetArg(&arg[3], Pt_ARG_WINDOW_RENDER_FLAGS,Pt_FALSE,~0);
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    PtSetArg(&arg[4], Pt_ARG_WINDOW_MANAGED_FLAGS,Pt_TRUE,
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                        Ph_WM_FFRONT |
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                        Ph_WM_CLOSE |
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                        Ph_WM_TOFRONT |
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                        Ph_WM_CONSWITCH);
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*/    
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	window=PtAppInit(NULL, NULL, NULL, 1, arg);
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  	if(window == NULL)
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  	{
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  		printf("Photon application init failed, probably Photon is not running.\n");
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        	exit( EXIT_FAILURE );
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  	}
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	//PgSetDrawBufferSize(16 *1024);
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	PgSetRegion(PtWidgetRid(window));
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	PgSetClipping(0,NULL);
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	PtRealizeWidget(window);
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    /* Get the available video modes */
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//    if(ph_GetVideoModes(this) < 0)
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//        return -1;
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	/* Create the blank cursor */
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	SDL_BlankCursor = this->CreateWMCursor(this, blank_cdata, blank_cmask,
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                (int)BLANK_CWIDTH, (int)BLANK_CHEIGHT,
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                   (int)BLANK_CHOTX, (int)BLANK_CHOTY);
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	if(SDL_BlankCursor == NULL)
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	  printf("could not create blank cursor\n");
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         if (PgGetGraphicsHWCaps(&my_hwcaps) < 0)
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         {
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                fprintf(stderr,"ph_VideoInit:  GetGraphicsHWCaps failed!! \n");
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         }
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         if (PgGetVideoModeInfo(my_hwcaps.current_video_mode, &my_mode_info) < 0)
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         {
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                fprintf(stderr,"ph_VideoInit:  PgGetVideoModeInfo failed\n");
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         }
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         //We need to return BytesPerPixel as it in used by CreateRGBsurface
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         vformat->BitsPerPixel = my_mode_info.bits_per_pixel;
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         vformat->BytesPerPixel = my_mode_info.bytes_per_scanline/my_mode_info.width;
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         //return a palette if we are in 256 color mode           
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		if(vformat->BitsPerPixel == 8)
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		{
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			vformat->palette = malloc(sizeof(SDL_Palette));
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			memset(vformat->palette, 0, sizeof(SDL_Palette));
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			vformat->palette->ncolors = 256;
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			vformat->palette->colors = (SDL_Color *)malloc(256 *sizeof(SDL_Color));
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			//fill the palette
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			rtnval = PgGetPalette(ph_palette);
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			if(rtnval < 0)
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			   printf("ph_VideoInit:  PgGetPalette failed\n");
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                        tempptr = (unsigned long *)vformat->palette->colors;
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			for(i=0;i<256; i++)
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			{
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  				*tempptr = (((unsigned long)ph_palette[i]) << 8);
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  				tempptr++;
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			}		
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		}
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    currently_fullscreen = 0;
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    this->info.wm_available = 1;
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    return 0;
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}
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static SDL_Surface *ph_SetVideoMode(_THIS, SDL_Surface *current,
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                int width, int height, int bpp, Uint32 flags)
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{
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    PgDisplaySettings_t settings;
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/*
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    PgHWCaps_t my_hwcaps;
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    PgVideoModeInfo_t mode_info;
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*/
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    int mode, actual_width, actual_height;
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    PtArg_t arg[5];
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    PhDim_t dim;	
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    int rtnval;
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    PgColor_t ph_palette[_Pg_MAX_PALETTE];
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    int i;
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    unsigned long *tempptr;
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#ifdef HAVE_OPENGL
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    uint64_t OGLAttrib[PH_OGL_MAX_ATTRIBS];
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#endif // HAVE_OPENGL
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    actual_width = width;
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    actual_height = height;
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    dim.w=width;
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    dim.h=height;
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    /* Lock the event thread, in multi-threading environments */
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    SDL_Lock_EventThread();
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     /* Initialize the window */
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    if (flags & SDL_FULLSCREEN) /* Direct Context , assume SDL_HWSURFACE also set */
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    {
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        /* Get the video mode and set it */
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        if (flags & SDL_ANYFORMAT)
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        {
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            if ((mode = get_mode_any_format(width, height, bpp)) == 0)
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            {
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                fprintf(stderr,"error: get_mode_any_format failed\n");
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                exit(1);
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            }
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        }
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        else
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        {
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            if ((mode = get_mode(width, height, bpp)) == 0)
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            {
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                 	fprintf(stderr,"error: get_mode failed\n");
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                	exit(1);
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            }
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        }
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        settings.mode = mode;
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        settings.refresh = 0;
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        settings.flags  = 0;       
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        if (PgSetVideoMode( &settings ) < 0)
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        {
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            fprintf(stderr,"error: PgSetVideoMode failed\n");
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        }
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		/* Get the true height and width */
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      current->flags = (flags|(~SDL_RESIZABLE)); /* no resize for Direct Context */
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		 /* Begin direct mode */
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		 ph_EnterFullScreen(this);
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    } /* end fullscreen flag */
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    else
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    {
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       if (flags & SDL_HWSURFACE)  /* Use offscreen memory iff SDL_HWSURFACE flag is set */
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       {
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         /* Hardware surface is Offsceen Context.  ph_ResizeImage handles the switch */
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         current->flags = (flags|(~SDL_RESIZABLE)); /* no stretch blit in offscreen context */
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       }
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       else /* must be SDL_SWSURFACE */
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       {
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          current->flags = (flags|SDL_RESIZABLE); /* yes we can resize as this is a software surface */
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       }
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#ifdef HAVE_OPENGL       
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       if (flags & SDL_OPENGL) /* for now support OpenGL in window mode only */
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       {
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          OGLAttrib[0]=PHOGL_ATTRIB_DEPTH_BITS;
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          OGLAttrib[1]=bpp;
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          OGLAttrib[2]=PHOGL_ATTRIB_NONE;
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          OGLContext=PdCreateOpenGLContext(2, &dim, 0, OGLAttrib);
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          if (OGLContext==NULL)
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          {
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             fprintf(stderr,"error: cannot create OpenGL context\n");
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             exit(1);
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          }
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          PhDCSetCurrent(OGLContext);
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       }
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#endif /* HAVE_OPENGL */
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    }
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	/* If we are setting video to use the palette make sure we have allocated memory for it */
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	if(bpp == 8)
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	{
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		current->format->palette = malloc(sizeof(SDL_Palette));
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   374
		memset(current->format->palette, 0, sizeof(SDL_Palette));
slouken@0
   375
		current->format->palette->ncolors = 256;
slouken@0
   376
		current->format->palette->colors = (SDL_Color *)malloc(256 *sizeof(SDL_Color));
slouken@279
   377
		/* fill the palette */
slouken@0
   378
		rtnval = PgGetPalette(ph_palette);
slouken@0
   379
slouken@266
   380
                tempptr = (unsigned long *)current->format->palette->colors;
slouken@0
   381
slouken@0
   382
		for(i=0;i<256; i++)
slouken@0
   383
		{
slouken@0
   384
  			*tempptr = (((unsigned long)ph_palette[i]) << 8);
slouken@0
   385
  			tempptr++;
slouken@0
   386
slouken@0
   387
		}
slouken@0
   388
	}
slouken@0
   389
slouken@0
   390
slouken@279
   391
	/* Current window dimensions */
slouken@0
   392
	PtGetResource( window, Pt_ARG_DIM, &dim, 0 );
slouken@279
   393
slouken@279
   394
	/* If we need to resize the window */
slouken@0
   395
	if((dim.w != width)||(dim.h != height))
slouken@0
   396
	{
slouken@0
   397
	    dim.w=width;
slouken@266
   398
	    dim.h=height; 
slouken@266
   399
	    PtSetArg(&arg[0], Pt_ARG_DIM, &dim,0);
slouken@266
   400
	    PtSetResources( window, 1, arg ); 	
slouken@266
   401
            current->w = width;
slouken@266
   402
            current->h = height;
slouken@266
   403
            current->format->BitsPerPixel = bpp;
slouken@279
   404
            current->format->BytesPerPixel = (bpp+7)/8;
slouken@266
   405
            current->pitch = SDL_CalculatePitch(current);
slouken@279
   406
            /* Must call at least once it setup image planes */
slouken@266
   407
            ph_ResizeImage(this, current, flags);
slouken@266
   408
        }
slouken@0
   409
slouken@0
   410
    SDL_Unlock_EventThread();
slouken@0
   411
slouken@0
   412
    /* We're done! */
slouken@0
   413
    return(current);
slouken@0
   414
}
slouken@0
   415
slouken@0
   416
static void ph_VideoQuit(_THIS)
slouken@0
   417
{
slouken@279
   418
    if (SDL_Image != NULL)
slouken@279
   419
    {
slouken@279
   420
        ph_DestroyImage(this, SDL_VideoSurface); 
slouken@279
   421
    }
slouken@0
   422
slouken@279
   423
    if (currently_fullscreen)
slouken@279
   424
    {
slouken@279
   425
        PdDirectStop( directContext );
slouken@279
   426
        PdReleaseDirectContext( directContext );
slouken@279
   427
        directContext=0;	
slouken@279
   428
        currently_fullscreen = 0;
slouken@279
   429
    }
slouken@0
   430
}
slouken@0
   431
slouken@0
   432
slouken@0
   433
static int ph_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
slouken@0
   434
{
slouken@0
   435
	PgColor_t *in, *out;
slouken@0
   436
	int i, j;
slouken@0
   437
	int alloct_all = 1;
slouken@0
   438
slouken@0
   439
    	colors = this->screen->format->palette->colors;
slouken@0
   440
slouken@0
   441
	in = alloca( ncolors*sizeof(PgColor_t)  );
slouken@0
   442
	if ( in == NULL  ) {
slouken@0
   443
		return 0;
slouken@0
   444
	}
slouken@0
   445
	memset(in,0,ncolors*sizeof(PgColor_t));
slouken@0
   446
slouken@0
   447
    out = alloca( ncolors*sizeof(PgColor_t)  );
slouken@0
   448
    if ( out == NULL  ) {
slouken@0
   449
		return 0;
slouken@0
   450
    }
slouken@0
   451
	
slouken@0
   452
	for (i=0,j=firstcolor;i<ncolors;i++,j++)
slouken@0
   453
	{
slouken@0
   454
		in[i] |= colors[j].r<<16 ;
slouken@0
   455
		in[i] |= colors[j].g<<8 ;
slouken@0
   456
		in[i] |= colors[j].b ; 
slouken@0
   457
	}
slouken@0
   458
slouken@0
   459
	if ( (this->screen->flags & SDL_HWPALETTE) == SDL_HWPALETTE ) 
slouken@0
   460
	{
slouken@0
   461
		if( PgSetPalette( in, 0, 0, ncolors, Pg_PALSET_HARD, 0) < 0 )
slouken@0
   462
		{
slouken@0
   463
			fprintf(stderr,"error: PgSetPalette(..,Pg_PALSET_HARD)  failed\n");
slouken@0
   464
			return 0;
slouken@0
   465
		}  
slouken@0
   466
	}
slouken@0
   467
	else 
slouken@0
   468
	{
slouken@0
   469
		if ( PgColorMatch(ncolors, in, out) < 0 )
slouken@0
   470
        {
slouken@0
   471
            fprintf(stderr,"error: PgColorMatch failed\n");
slouken@0
   472
            return 0;
slouken@0
   473
        }
slouken@0
   474
		for (i=0;i<ncolors;i++)
slouken@0
   475
		{
slouken@0
   476
			if (memcmp(&in[i],&out[i],sizeof(PgColor_t)))
slouken@0
   477
			{
slouken@0
   478
				alloct_all = 0;
slouken@0
   479
				break;
slouken@0
   480
			}
slouken@0
   481
		}
slouken@0
   482
        if( PgSetPalette( out, 0, 0, ncolors, Pg_PALSET_SOFT, 0) < 0 )
slouken@0
   483
        {
slouken@0
   484
            fprintf(stderr,"error: PgSetPalette(..,Pg_PALSET_SOFT) failed\n");
slouken@0
   485
            return 0;
slouken@0
   486
        }
slouken@0
   487
	}
slouken@0
   488
	return alloct_all;
slouken@0
   489
}
slouken@0
   490
slouken@279
   491
#ifdef HAVE_OPENGL
slouken@266
   492
void ph_GL_SwapBuffers(_THIS)
slouken@266
   493
{
slouken@266
   494
   PgSetRegion(PtWidgetRid(window));
slouken@266
   495
   PdOpenGLContextSwapBuffers(OGLContext);
slouken@266
   496
}
slouken@279
   497
#endif // HAVE_OPENGL
slouken@266
   498
slouken@266
   499
/*
slouken@0
   500
static int ph_ResizeWindow(_THIS,
slouken@0
   501
            SDL_Surface *screen, int w, int h, Uint32 flags)
slouken@0
   502
{
slouken@0
   503
	PhWindowEvent_t winevent;
slouken@0
   504
slouken@0
   505
	memset( &winevent, 0, sizeof(winevent) ); 
slouken@0
   506
	winevent.event_f = Ph_WM_RESIZE;
slouken@0
   507
	winevent.size.w = w;
slouken@0
   508
	winevent.size.h = h;
slouken@0
   509
	winevent.rid = PtWidgetRid( window );
slouken@0
   510
	if (PtForwardWindowEvent( &winevent ) < 0)
slouken@0
   511
	{
slouken@0
   512
		fprintf(stderr,"error: PtForwardWindowEvent failed.\n");
slouken@0
   513
	}
slouken@0
   514
	current_w = w;
slouken@0
   515
	current_h = h;
slouken@0
   516
    return(0);
slouken@0
   517
}
slouken@266
   518
*/