sdl_nxvideo.c

网络MPEG4IP流媒体开发源代码

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002  Sam Lantinga
    Copyright (C) 2001  Hsieh-Fu Tsai
    Copyright (C) 2002  Greg Haerr <[e-mail]>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library 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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    [e-mail]
    
    Hsieh-Fu Tsai
    [e-mail]
*/

#include <stdlib.h>

#include "SDL_video.h"
#include "SDL_pixels_c.h"
#include "SDL_events_c.h"
#include "SDL_thread.h"

#define MWINCLUDECOLORS
#include "SDL_nxvideo.h"
#include "SDL_nxmodes_c.h"
#include "SDL_nxwm_c.h"
#include "SDL_nxmouse_c.h"
#include "SDL_nximage_c.h"
#include "SDL_nxevents_c.h"

// Initialization/Query functions
static int NX_VideoInit (_THIS, SDL_PixelFormat * vformat) ;
static SDL_Surface * NX_SetVideoMode (_THIS, SDL_Surface * current, int width, int height, int bpp, Uint32 flags) ;
static int NX_SetColors (_THIS, int firstcolor, int ncolors, SDL_Color * colors) ;
static void NX_VideoQuit (_THIS) ;
static void NX_DestroyWindow (_THIS, SDL_Surface * screen) ;
static int NX_ToggleFullScreen (_THIS, int on) ;
static void NX_UpdateMouse (_THIS) ;
static int NX_SetGammaRamp (_THIS, Uint16 * ramp) ;
static int NX_GetGammaRamp (_THIS, Uint16 * ramp) ;

// Microwin driver bootstrap functions
static int NX_Available ()
{
    Dprintf ("enter NX_Available\n") ;

    if (GrOpen () < 0) return 0 ;
        GrClose () ;
    
    Dprintf ("leave NX_Available\n") ;
    return 1 ;
}

static void NX_DeleteDevice (SDL_VideoDevice * device)
{
    Dprintf ("enter NX_DeleteDevice\n") ;

    if (device) {
        if (device -> hidden) free (device -> hidden) ;
        if (device -> gl_data) free (device -> gl_data) ;
            free (device) ;
    }

    Dprintf ("leave NX_DeleteDevice\n") ;
}
    
static SDL_VideoDevice * NX_CreateDevice (int devindex)
{
    SDL_VideoDevice * device ;

    Dprintf ("enter NX_CreateDevice\n") ;

    // Initialize all variables that we clean on shutdown
    device = (SDL_VideoDevice *) malloc (sizeof (SDL_VideoDevice)) ;
    if (device) {
        memset (device, 0, (sizeof * device)) ;
        device -> hidden = (struct SDL_PrivateVideoData *)
                malloc ((sizeof * device -> hidden)) ;
        device -> gl_data = NULL ;
    }
    if ((device == NULL) || (device -> hidden == NULL)) {
        SDL_OutOfMemory () ;
        NX_DeleteDevice (device) ;
        return 0 ;
    }
    memset (device -> hidden, 0, (sizeof * device -> hidden)) ;

    // Set the function pointers
    device -> VideoInit = NX_VideoInit ;
    device -> ListModes = NX_ListModes ;
    device -> SetVideoMode = NX_SetVideoMode ;
    device -> ToggleFullScreen = NX_ToggleFullScreen ;
    device -> UpdateMouse = NX_UpdateMouse ;
    device -> CreateYUVOverlay = NULL ;
    device -> SetColors = NX_SetColors ;
    device -> UpdateRects = NULL ;
    device -> VideoQuit = NX_VideoQuit;
    device -> AllocHWSurface = NULL ;
    device -> CheckHWBlit = NULL ;
    device -> FillHWRect = NULL ;
    device -> SetHWColorKey = NULL ;
    device -> SetHWAlpha = NULL ;
    device -> LockHWSurface = NULL ;
    device -> UnlockHWSurface = NULL ;
    device -> FlipHWSurface = NULL ;
    device -> FreeHWSurface = NULL ;
    device -> SetGamma = NULL ;
    device -> GetGamma = NULL ;
    device -> SetGammaRamp = NX_SetGammaRamp ;
    device -> GetGammaRamp = NX_GetGammaRamp ;

#ifdef HAVE_OPENGL
    device -> GL_LoadLibrary = NULL ;
    device -> GL_GetProcAddress = NULL ;
    device -> GL_GetAttribute = NULL ;
    device -> GL_MakeCurrent = NULL ;
    device -> GL_SwapBuffers = NULL ;
#endif

    device -> SetIcon = NULL ;
    device -> SetCaption = NX_SetCaption;
    device -> IconifyWindow = NULL ;
    device -> GrabInput = NULL ;
    device -> GetWMInfo = NX_GetWMInfo ;
    device -> FreeWMCursor =  NX_FreeWMCursor ;
    device -> CreateWMCursor = NX_CreateWMCursor ;
    device -> ShowWMCursor = NX_ShowWMCursor ;
    device -> WarpWMCursor = NX_WarpWMCursor ;
    device -> CheckMouseMode = NULL ;
    device -> InitOSKeymap = NX_InitOSKeymap ;
    device -> PumpEvents = NX_PumpEvents ;

    device -> free = NX_DeleteDevice ;

    Dprintf ("leave NX_CreateDevice\n") ;
    return device ;
}

VideoBootStrap NX_bootstrap = {
    "nanox", "nanox", NX_Available, NX_CreateDevice
} ;

static void create_aux_windows (_THIS)
{
    GR_WM_PROPERTIES props ;

    Dprintf ("enter create_aux_windows\n") ;

    // Don't create any extra windows if we are being managed
    if (SDL_windowid) {
        FSwindow = 0 ;
        return ;
    }
    
    if (FSwindow && FSwindow != GR_ROOT_WINDOW_ID) {
        GrDestroyWindow (FSwindow) ;
    }
    
    FSwindow = GrNewWindow (GR_ROOT_WINDOW_ID, 0, 0, 1, 1, 0, BLACK, BLACK) ;
    props.flags = GR_WM_FLAGS_PROPS ;
    props.props = GR_WM_PROPS_NODECORATE ;
    GrSetWMProperties (FSwindow, & props) ;

    GrSelectEvents (FSwindow, (GR_EVENT_MASK_EXPOSURE         |
        GR_EVENT_MASK_BUTTON_DOWN  | GR_EVENT_MASK_BUTTON_UP  |
        GR_EVENT_MASK_FOCUS_IN     | GR_EVENT_MASK_FOCUS_OUT  |
        GR_EVENT_MASK_KEY_DOWN     | GR_EVENT_MASK_KEY_UP     |
        GR_EVENT_MASK_MOUSE_ENTER  | GR_EVENT_MASK_MOUSE_EXIT |
        GR_EVENT_MASK_MOUSE_MOTION | GR_EVENT_MASK_UPDATE     |
        GR_EVENT_MASK_CLOSE_REQ)) ;

    Dprintf ("leave create_aux_windows\n") ;
}

int NX_VideoInit (_THIS, SDL_PixelFormat * vformat)
{
    GR_SCREEN_INFO si ;

    Dprintf ("enter NX_VideoInit\n") ;
    
    if (GrOpen () < 0) {
        SDL_SetError ("GrOpen() fail") ;
        return -1 ;
    }

    // use share memory to speed up
#ifdef NANOX_SHARE_MEMORY
    GrReqShmCmds (0xFFFF);
#endif

    SDL_Window = 0 ;
    FSwindow = 0 ;

    GammaRamp_R = NULL ;
    GammaRamp_G = NULL ;
    GammaRamp_B = NULL ;    

    GrGetScreenInfo (& si) ;
    SDL_Visual.bpp = si.bpp ;

    // GetVideoMode
    SDL_modelist = (SDL_Rect **) malloc (sizeof (SDL_Rect *) * 2) ;
    if (SDL_modelist) {
        SDL_modelist [0] = (SDL_Rect *) malloc (sizeof(SDL_Rect)) ;
        if (SDL_modelist [0]) {
            SDL_modelist [0] -> x = 0 ;
            SDL_modelist [0] -> y = 0 ;
            SDL_modelist [0] -> w = si.cols ;
            SDL_modelist [0] -> h = si.rows ;
        }
        SDL_modelist [1] = NULL ;
    }

    pixel_type = si.pixtype;
    SDL_Visual.red_mask = si.rmask;
    SDL_Visual.green_mask = si.gmask;
    SDL_Visual.blue_mask = si.bmask;

    vformat -> BitsPerPixel = SDL_Visual.bpp ;
    if (vformat -> BitsPerPixel > 8) {
        vformat -> Rmask = SDL_Visual.red_mask ;
        vformat -> Gmask = SDL_Visual.green_mask ;
        vformat -> Bmask = SDL_Visual.blue_mask ;
    }

    // See if we have been passed a window to use
    SDL_windowid = getenv ("SDL_WINDOWID") ;
    
    // Create the fullscreen (and managed windows : no implement)
    create_aux_windows (this) ;

    Dprintf ("leave NX_VideoInit\n") ;
    return 0 ;
}

void NX_VideoQuit (_THIS)
{
    Dprintf ("enter NX_VideoQuit\n") ;

    // Start shutting down the windows
    NX_DestroyImage (this, this -> screen) ;
    NX_DestroyWindow (this, this -> screen) ;
    if (FSwindow && FSwindow != GR_ROOT_WINDOW_ID) {
        GrDestroyWindow (FSwindow) ;
    }
    NX_FreeVideoModes (this) ;
    free (GammaRamp_R) ;
    free (GammaRamp_G) ;
    free (GammaRamp_B) ;

#ifdef ENABLE_NANOX_DIRECT_FB
    if (Clientfb)
        GrCloseClientFramebuffer();
#endif
    GrClose () ;

    Dprintf ("leave NX_VideoQuit\n") ;