SDL_vglvideo.c
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:17k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- SDL - Simple DirectMedia Layer
- Copyright (C) 1997, 1998, 1999, 2000 Sam Lantinga
- 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
- slouken@libsdl.org
- */
- #ifdef SAVE_RCSID
- static char rcsid =
- "@(#) $Id: SDL_vglvideo.c,v 1.3 2002/04/22 21:38:05 wmay Exp $";
- #endif
- /* libvga based SDL video driver implementation.
- */
- #include <err.h>
- #include <osreldate.h>
- #include <stdlib.h>
- #include <stdio.h>
- #include <unistd.h>
- #include <sys/stat.h>
- #include <sys/fbio.h>
- #include <sys/consio.h>
- #include <sys/kbio.h>
- #include <vgl.h>
- #include "SDL.h"
- #include "SDL_error.h"
- #include "SDL_video.h"
- #include "SDL_mouse.h"
- #include "SDL_sysvideo.h"
- #include "SDL_pixels_c.h"
- #include "SDL_events_c.h"
- #include "SDL_vglvideo.h"
- #include "SDL_vglevents_c.h"
- #include "SDL_vglmouse_c.h"
- /* Initialization/Query functions */
- static int VGL_VideoInit(_THIS, SDL_PixelFormat *vformat);
- static SDL_Rect **VGL_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
- static SDL_Surface *VGL_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
- static int VGL_SetColors(_THIS, int firstcolor, int ncolors,
- SDL_Color *colors);
- static void VGL_VideoQuit(_THIS);
- /* Hardware surface functions */
- static int VGL_AllocHWSurface(_THIS, SDL_Surface *surface);
- static int VGL_LockHWSurface(_THIS, SDL_Surface *surface);
- static int VGL_FlipHWSurface(_THIS, SDL_Surface *surface);
- static void VGL_UnlockHWSurface(_THIS, SDL_Surface *surface);
- static void VGL_FreeHWSurface(_THIS, SDL_Surface *surface);
- /* Misc function */
- static VGLMode ** VGLListModes(int depth, int mem_model);
- static void VGLWaitRetrace(void);
- /* VGL driver bootstrap functions */
- static int VGL_Available(void)
- {
- /*
- * Check to see if we are root and stdin is a
- * virtual console. Also try to ensure that
- * modes other than 320x200 are available
- */
- int console, hires_available, i;
- VGLMode **modes;
- console = STDIN_FILENO;
- if ( console >= 0 ) {
- struct stat sb;
- struct vt_mode dummy;
- if ( (fstat(console, &sb) < 0) ||
- (ioctl(console, VT_GETMODE, &dummy) < 0) ) {
- console = -1;
- }
- }
- if (geteuid() != 0 && console == -1)
- return 0;
- modes = VGLListModes(8, V_INFO_MM_DIRECT | V_INFO_MM_PACKED);
- hires_available = 0;
- for (i = 0; modes[i] != NULL; i++) {
- if ((modes[i]->ModeInfo.Xsize > 320) &&
- (modes[i]->ModeInfo.Ysize > 200) &&
- ((modes[i]->ModeInfo.Type == VIDBUF8) ||
- (modes[i]->ModeInfo.Type == VIDBUF16) ||
- (modes[i]->ModeInfo.Type == VIDBUF32))) {
- hires_available = 1;
- break;
- }
- }
- return hires_available;
- }
- static void VGL_DeleteDevice(SDL_VideoDevice *device)
- {
- free(device->hidden);
- free(device);
- }
- static SDL_VideoDevice *VGL_CreateDevice(int devindex)
- {
- SDL_VideoDevice *device;
- /* 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));
- }
- if ( (device == NULL) || (device->hidden == NULL) ) {
- SDL_OutOfMemory();
- if ( device ) {
- free(device);
- }
- return(0);
- }
- memset(device->hidden, 0, (sizeof *device->hidden));
- /* Set the function pointers */
- device->VideoInit = VGL_VideoInit;
- device->ListModes = VGL_ListModes;
- device->SetVideoMode = VGL_SetVideoMode;
- device->SetColors = VGL_SetColors;
- device->UpdateRects = NULL;
- device->VideoQuit = VGL_VideoQuit;
- device->AllocHWSurface = VGL_AllocHWSurface;
- device->CheckHWBlit = NULL;
- device->FillHWRect = NULL;
- device->SetHWColorKey = NULL;
- device->SetHWAlpha = NULL;
- device->LockHWSurface = VGL_LockHWSurface;
- device->UnlockHWSurface = VGL_UnlockHWSurface;
- device->FlipHWSurface = VGL_FlipHWSurface;
- device->FreeHWSurface = VGL_FreeHWSurface;
- device->SetIcon = NULL;
- device->SetCaption = NULL;
- device->GetWMInfo = NULL;
- device->FreeWMCursor = VGL_FreeWMCursor;
- device->CreateWMCursor = VGL_CreateWMCursor;
- device->ShowWMCursor = VGL_ShowWMCursor;
- device->WarpWMCursor = VGL_WarpWMCursor;
- device->InitOSKeymap = VGL_InitOSKeymap;
- device->PumpEvents = VGL_PumpEvents;
- device->free = VGL_DeleteDevice;
- return device;
- }
- VideoBootStrap VGL_bootstrap = {
- "vgl", "FreeBSD libVGL",
- VGL_Available, VGL_CreateDevice
- };
- static int VGL_AddMode(_THIS, VGLMode *inmode)
- {
- SDL_Rect *mode;
- int i, index;
- int next_mode;
- /* Check to see if we already have this mode */
- if (inmode->Depth < 8) { /* Not supported */
- return 0;
- }
- index = ((inmode->Depth + 7) / 8) - 1;
- for (i=0; i<SDL_nummodes[index]; ++i) {
- mode = SDL_modelist[index][i];
- if ((mode->w == inmode->ModeInfo.Xsize) &&
- (mode->h == inmode->ModeInfo.Ysize))
- return 0;
- }
- /* Set up the new video mode rectangle */
- mode = (SDL_Rect *)malloc(sizeof *mode);
- if (mode == NULL) {
- SDL_OutOfMemory();
- return -1;
- }
- mode->x = 0;
- mode->y = 0;
- mode->w = inmode->ModeInfo.Xsize;
- mode->h = inmode->ModeInfo.Ysize;
- /* Allocate the new list of modes, and fill in the new mode */
- next_mode = SDL_nummodes[index];
- SDL_modelist[index] = (SDL_Rect **)
- realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *));
- if (SDL_modelist[index] == NULL) {
- SDL_OutOfMemory();
- SDL_nummodes[index] = 0;
- free(mode);
- return -1;
- }
- SDL_modelist[index][next_mode] = mode;
- SDL_modelist[index][next_mode+1] = NULL;
- SDL_nummodes[index]++;
- return 0;
- }
- static void VGL_UpdateVideoInfo(_THIS)
- {
- this->info.wm_available = 0;
- this->info.hw_available = 1;
- this->info.video_mem = 0;
- if (VGLCurMode == NULL) {
- return;
- }
- if (VGLCurMode->ModeInfo.PixelBytes > 0) {
- this->info.video_mem = VGLCurMode->ModeInfo.PixelBytes *
- VGLCurMode->ModeInfo.Xsize *
- VGLCurMode->ModeInfo.Ysize;
- }
- }
- int VGL_VideoInit(_THIS, SDL_PixelFormat *vformat)
- {
- int i;
- int total_modes;
- VGLMode **modes;
- /* Initialize all variables that we clean on shutdown */
- for ( i=0; i<NUM_MODELISTS; ++i ) {
- SDL_nummodes[i] = 0;
- SDL_modelist[i] = NULL;
- }
- /* Enable mouse and keyboard support */
- if (getenv("SDL_NO_RAWKBD") == NULL) {
- if (VGLKeyboardInit(VGL_CODEKEYS) != 0) {
- SDL_SetError("Unable to initialize keyboard");
- return -1;
- }
- } else {
- warnx("Requiest to put keyboard into a raw mode ignored");
- }
- if (VGL_initkeymaps(STDIN_FILENO) != 0) {
- SDL_SetError("Unable to initialize keymap");
- return -1;
- }
- if (VGL_initmouse(STDIN_FILENO) != 0) {
- SDL_SetError("Unable to initialize mouse");
- return -1;
- }
- /* Determine the screen depth */
- if (VGLCurMode != NULL)
- vformat->BitsPerPixel = VGLCurMode->Depth;
- else
- vformat->BitsPerPixel = 16; /* Good default */
- /* Query for the list of available video modes */
- total_modes = 0;
- modes = VGLListModes(-1, V_INFO_MM_DIRECT | V_INFO_MM_PACKED);
- for (i = 0; modes[i] != NULL; i++) {
- if ((modes[i]->ModeInfo.Type == VIDBUF8) ||
- (modes[i]->ModeInfo.Type == VIDBUF16) ||
- (modes[i]->ModeInfo.Type == VIDBUF32)) {
- VGL_AddMode(this, modes[i]);
- total_modes++;
- }
- }
- if (total_modes == 0) {
- SDL_SetError("No linear video modes available");
- return -1;
- }
- /* Fill in our hardware acceleration capabilities */
- VGL_UpdateVideoInfo(this);
- /* Create the hardware surface lock mutex */
- hw_lock = SDL_CreateMutex();
- if (hw_lock == NULL) {
- SDL_SetError("Unable to create lock mutex");
- VGL_VideoQuit(this);
- return -1;
- }
- /* We're done! */
- return 0;
- }
- SDL_Rect **VGL_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
- {
- return SDL_modelist[((format->BitsPerPixel+7)/8)-1];
- }
- /* Various screen update functions available */
- static void VGL_DirectUpdate(_THIS, int numrects, SDL_Rect *rects);
- static void VGL_BankedUpdate(_THIS, int numrects, SDL_Rect *rects);
- SDL_Surface *VGL_SetVideoMode(_THIS, SDL_Surface *current,
- int width, int height, int bpp, Uint32 flags)
- {
- int mode_found;
- int i;
- VGLMode **modes;
- modes = VGLListModes(bpp, V_INFO_MM_DIRECT | V_INFO_MM_PACKED);
- mode_found = 0;
- for (i = 0; modes[i] != NULL; i++) {
- if ((modes[i]->ModeInfo.Xsize == width) &&
- (modes[i]->ModeInfo.Ysize == height) &&
- ((modes[i]->ModeInfo.Type == VIDBUF8) ||
- (modes[i]->ModeInfo.Type == VIDBUF16) ||
- (modes[i]->ModeInfo.Type == VIDBUF32))) {
- mode_found = 1;
- break;
- }
- }
- if (mode_found == 0) {
- SDL_SetError("No matching video mode found");
- return NULL;
- }
- /* Shutdown previous videomode (if any) */
- if (VGLCurMode != NULL)
- VGLEnd();
- /* Try to set the requested linear video mode */
- if (VGLInit(modes[i]->ModeId) != 0) {
- SDL_SetError("Unable to switch to requested mode");
- return NULL;
- }
- VGLCurMode = realloc(VGLCurMode, sizeof(VGLMode));
- VGLCurMode->ModeInfo = *VGLDisplay;
- VGLCurMode->Depth = modes[i]->Depth;
- VGLCurMode->ModeId = modes[i]->ModeId;
- VGLCurMode->Rmask = modes[i]->Rmask;
- VGLCurMode->Gmask = modes[i]->Gmask;
- VGLCurMode->Bmask = modes[i]->Bmask;
- /* Workaround a bug in libvgl */
- if (VGLCurMode->ModeInfo.PixelBytes == 0)
- (VGLCurMode->ModeInfo.PixelBytes = 1);
- current->w = VGLCurMode->ModeInfo.Xsize;
- current->h = VGLCurMode->ModeInfo.Ysize;
- current->pixels = VGLCurMode->ModeInfo.Bitmap;
- current->pitch = VGLCurMode->ModeInfo.Xsize *
- VGLCurMode->ModeInfo.PixelBytes;
- current->flags = (SDL_FULLSCREEN | SDL_HWSURFACE);
- /* Check if we are in a pseudo-color mode */
- if (VGLCurMode->ModeInfo.Type == VIDBUF8)
- current->flags |= SDL_HWPALETTE;
- /* Check if we can do doublebuffering */
- if (flags & SDL_DOUBLEBUF) {
- if (VGLCurMode->ModeInfo.Xsize * 2 <=
- VGLCurMode->ModeInfo.VYsize) {
- current->flags |= SDL_DOUBLEBUF;
- flip_page = 0;
- flip_address[0] = (byte *)current->pixels;
- flip_address[1] = (byte *)current->pixels +
- current->h * current->pitch;
- VGL_FlipHWSurface(this, current);
- }
- }
- if (! SDL_ReallocFormat(current, modes[i]->Depth, VGLCurMode->Rmask,
- VGLCurMode->Gmask, VGLCurMode->Bmask, 0)) {
- return NULL;
- }
- /* Update hardware acceleration info */
- VGL_UpdateVideoInfo(this);
- /* Set the blit function */
- this->UpdateRects = VGL_DirectUpdate;
- /* We're done */
- return current;
- }
- /* We don't actually allow hardware surfaces other than the main one */
- static int VGL_AllocHWSurface(_THIS, SDL_Surface *surface)
- {
- return -1;
- }
- static void VGL_FreeHWSurface(_THIS, SDL_Surface *surface)
- {
- return;
- }
- /* We need to wait for vertical retrace on page flipped displays */
- static int VGL_LockHWSurface(_THIS, SDL_Surface *surface)
- {
- if (surface == SDL_VideoSurface) {
- SDL_mutexP(hw_lock);
- }
- return 0;
- }
- static void VGL_UnlockHWSurface(_THIS, SDL_Surface *surface)
- {
- if (surface == SDL_VideoSurface) {
- SDL_mutexV(hw_lock);
- }
- }
- static int VGL_FlipHWSurface(_THIS, SDL_Surface *surface)
- {
- // VGLWaitRetrace();
- if (VGLPanScreen(VGLDisplay, 0, flip_page * surface->h) < 0) {
- SDL_SetError("VGLPanSreen() failed");
- return -1;
- }
- flip_page = !flip_page;
- surface->pixels = flip_address[flip_page];
- return 0;
- }
- static void VGL_DirectUpdate(_THIS, int numrects, SDL_Rect *rects)
- {
- return;
- }
- static void VGL_BankedUpdate(_THIS, int numrects, SDL_Rect *rects)
- {
- return;
- }
- int VGL_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
- {
- int i;
- for(i = 0; i < ncolors; i++) {
- VGLSetPaletteIndex(firstcolor + i,
- colors[i].r>>2,
- colors[i].g>>2,
- colors[i].b>>2);
- }
- return 1;
- }
- /* Note: If we are terminated, this could be called in the middle of
- another SDL video routine -- notably UpdateRects.
- */
- void VGL_VideoQuit(_THIS)
- {
- int i, j;
- /* Return the keyboard to the normal state */
- VGLKeyboardEnd();
- /* Reset the console video mode if we actually initialised one */
- if (VGLCurMode != NULL) {
- VGLEnd();
- free(VGLCurMode);
- VGLCurMode = NULL;
- }
- /* Clear the lock mutex */
- if (hw_lock != NULL) {
- SDL_DestroyMutex(hw_lock);
- hw_lock = NULL;
- }
- /* Free video mode lists */
- for (i = 0; i < NUM_MODELISTS; i++) {
- if (SDL_modelist[i] != NULL) {
- for (j = 0; SDL_modelist[i][j] != NULL; ++j) {
- free(SDL_modelist[i][j]);
- }
- free(SDL_modelist[i]);
- SDL_modelist[i] = NULL;
- }
- }
- if ( this->screen && (this->screen->flags & SDL_HWSURFACE) ) {
- /* Direct screen access, not a memory buffer */
- this->screen->pixels = NULL;
- }
- }
- #define VGL_RED_INDEX 0
- #define VGL_GREEN_INDEX 1
- #define VGL_BLUE_INDEX 2
- static VGLMode **
- VGLListModes(int depth, int mem_model)
- {
- static VGLMode **modes = NULL;
- VGLBitmap *vminfop;
- VGLMode **modesp, *modescp;
- video_info_t minfo;
- int adptype, i, modenum;
- if (modes == NULL) {
- modes = malloc(sizeof(VGLMode *) * M_VESA_MODE_MAX);
- bzero(modes, sizeof(VGLMode *) * M_VESA_MODE_MAX);
- }
- modesp = modes;
- for (modenum = 0; modenum < M_VESA_MODE_MAX; modenum++) {
- minfo.vi_mode = modenum;
- if (ioctl(0, CONS_MODEINFO, &minfo) || ioctl(0, CONS_CURRENT, &adptype))
- continue;
- if (minfo.vi_mode != modenum)
- continue;
- if ((minfo.vi_flags & V_INFO_GRAPHICS) == 0)
- continue;
- if ((mem_model != -1) && ((minfo.vi_mem_model & mem_model) == 0))
- continue;
- if ((depth > 1) && (minfo.vi_depth != depth))
- continue;
- /* reallocf can fail */
- if ((*modesp = reallocf(*modesp, sizeof(VGLMode))) == NULL)
- return NULL;
- modescp = *modesp;
- vminfop = &(modescp->ModeInfo);
- bzero(vminfop, sizeof(VGLBitmap));
- vminfop->Type = NOBUF;
- vminfop->PixelBytes = 1; /* Good default value */
- switch (minfo.vi_mem_model) {
- case V_INFO_MM_PLANAR:
- /* we can handle EGA/VGA planar modes only */
- if (!(minfo.vi_depth != 4 || minfo.vi_planes != 4
- || (adptype != KD_EGA && adptype != KD_VGA)))
- vminfop->Type = VIDBUF4;
- break;
- case V_INFO_MM_PACKED:
- /* we can do only 256 color packed modes */
- if (minfo.vi_depth == 8)
- vminfop->Type = VIDBUF8;
- break;
- case V_INFO_MM_VGAX:
- vminfop->Type = VIDBUF8X;
- break;
- #if defined(__FreeBSD_version) && __FreeBSD_version >= 500000
- case V_INFO_MM_DIRECT:
- vminfop->PixelBytes = minfo.vi_pixel_size;
- switch (vminfop->PixelBytes) {
- case 2:
- vminfop->Type = VIDBUF16;
- break;
- #if notyet
- case 3:
- vminfop->Type = VIDBUF24;
- break;
- #endif
- case 4:
- vminfop->Type = VIDBUF32;
- break;
- default:
- break;
- }
- #endif
- default:
- break;
- }
- if (vminfop->Type == NOBUF)
- continue;
- switch (vminfop->Type) {
- case VIDBUF16:
- case VIDBUF32:
- modescp->Rmask = ((1 << minfo.vi_pixel_fsizes[VGL_RED_INDEX]) - 1) <<
- minfo.vi_pixel_fields[VGL_RED_INDEX];
- modescp->Gmask = ((1 << minfo.vi_pixel_fsizes[VGL_GREEN_INDEX]) - 1) <<
- minfo.vi_pixel_fields[VGL_GREEN_INDEX];
- modescp->Bmask = ((1 << minfo.vi_pixel_fsizes[VGL_BLUE_INDEX]) - 1) <<
- minfo.vi_pixel_fields[VGL_BLUE_INDEX];
- break;
- default:
- break;
- }
- vminfop->Xsize = minfo.vi_width;
- vminfop->Ysize = minfo.vi_height;
- modescp->Depth = minfo.vi_depth;
- /* XXX */
- if (minfo.vi_mode >= M_VESA_BASE)
- modescp->ModeId = _IO('V', minfo.vi_mode - M_VESA_BASE);
- else
- modescp->ModeId = _IO('S', minfo.vi_mode);
- /* Sort list */
- for (i = 0; modes + i < modesp ; i++) {
- if (modes[i]->ModeInfo.Xsize * modes[i]->ModeInfo.Ysize >
- vminfop->Xsize * modes[i]->ModeInfo.Ysize)
- continue;
- if ((modes[i]->ModeInfo.Xsize * modes[i]->ModeInfo.Ysize ==
- vminfop->Xsize * vminfop->Ysize) &&
- (modes[i]->Depth >= modescp->Depth))
- continue;
- *modesp = modes[i];
- modes[i] = modescp;
- modescp = *modesp;
- vminfop = &(modescp->ModeInfo);
- }
- modesp++;
- }
- if (*modesp != NULL) {
- free(*modesp);
- *modesp = NULL;
- }
- return modes;
- }
- static void
- VGLWaitRetrace(void)
- {
- while (!(inb(0x3DA) & 8));
- while (inb(0x3DA) & 8);
- }