SDL_fbmatrox.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:7k
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, 2001, 2002 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_fbmatrox.c,v 1.4 2002/04/22 21:38:04 wmay Exp $";
- #endif
- #include "SDL_types.h"
- #include "SDL_video.h"
- #include "SDL_blit.h"
- #include "SDL_fbmatrox.h"
- #include "matrox_mmio.h"
- /* Wait for vertical retrace - taken from the XFree86 Matrox driver */
- static void WaitVBL(_THIS)
- {
- int count;
- /* find start of retrace */
- mga_waitidle();
- while ( (mga_in8(0x1FDA) & 0x08) )
- ;
- while ( !(mga_in8(0x1FDA) & 0x08) )
- ;
- /* wait until we're past the start */
- count = mga_in32(0x1E20) + 2;
- while ( mga_in32(0x1E20) < count )
- ;
- }
- static void WaitIdle(_THIS)
- {
- mga_waitidle();
- }
- /* Sets video mem colorkey and accelerated blit function */
- static int SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key)
- {
- return(0);
- }
- /* Sets per surface hardware alpha value */
- #if 0
- static int SetHWAlpha(_THIS, SDL_Surface *surface, Uint8 value)
- {
- return(0);
- }
- #endif
- static int FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color)
- {
- int dstX, dstY;
- Uint32 fxbndry;
- Uint32 ydstlen;
- Uint32 fillop;
- /* Don't blit to the display surface when switched away */
- if ( dst == this->screen ) {
- SDL_mutexP(hw_lock);
- }
- switch (dst->format->BytesPerPixel) {
- case 1:
- color |= (color<<8);
- case 2:
- color |= (color<<16);
- break;
- }
- /* Set up the X/Y base coordinates */
- FB_dst_to_xy(this, dst, &dstX, &dstY);
- /* Adjust for the current rectangle */
- dstX += rect->x;
- dstY += rect->y;
- /* Set up the X boundaries */
- fxbndry = (dstX | ((dstX+rect->w) << 16));
- /* Set up the Y boundaries */
- ydstlen = (rect->h | (dstY << 16));
- /* Set up for color fill operation */
- fillop = MGADWG_TRAP | MGADWG_SOLID |
- MGADWG_ARZERO | MGADWG_SGNZERO | MGADWG_SHIFTZERO;
- /* Execute the operations! */
- mga_wait(5);
- mga_out32(MGAREG_DWGCTL, fillop | MGADWG_REPLACE);
- mga_out32(MGAREG_FCOL, color);
- mga_out32(MGAREG_FXBNDRY, fxbndry);
- mga_out32(MGAREG_YDSTLEN + MGAREG_EXEC, ydstlen);
- FB_AddBusySurface(dst);
- if ( dst == this->screen ) {
- SDL_mutexV(hw_lock);
- }
- return(0);
- }
- static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
- SDL_Surface *dst, SDL_Rect *dstrect)
- {
- SDL_VideoDevice *this = current_video;
- int pitch, w, h;
- int srcX, srcY;
- int dstX, dstY;
- Uint32 sign;
- Uint32 start, stop;
- int skip;
- Uint32 blitop;
- /* FIXME: For now, only blit to display surface */
- if ( dst->pitch != SDL_VideoSurface->pitch ) {
- return(src->map->sw_blit(src, srcrect, dst, dstrect));
- }
- /* Don't blit to the display surface when switched away */
- if ( dst == this->screen ) {
- SDL_mutexP(hw_lock);
- }
- /* Calculate source and destination base coordinates (in pixels) */
- w = dstrect->w;
- h = dstrect->h;
- FB_dst_to_xy(this, src, &srcX, &srcY);
- FB_dst_to_xy(this, dst, &dstX, &dstY);
- /* Adjust for the current blit rectangles */
- srcX += srcrect->x;
- srcY += srcrect->y;
- dstX += dstrect->x;
- dstY += dstrect->y;
- pitch = dst->pitch/dst->format->BytesPerPixel;
- /* Set up the blit direction (sign) flags */
- sign = 0;
- if ( srcX < dstX ) {
- sign |= 1;
- }
- if ( srcY < dstY ) {
- sign |= 4;
- srcY += (h - 1);
- dstY += (h - 1);
- }
- /* Set up the blit source row start, end, and skip (in pixels) */
- stop = start = (srcY * pitch) + srcX;
- if ( srcX < dstX ) {
- start += (w - 1);
- } else {
- stop += (w - 1);
- }
- if ( srcY < dstY ) {
- skip = -pitch;
- } else {
- skip = pitch;
- }
- /* Set up the blit operation */
- if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
- Uint32 colorkey;
- blitop = MGADWG_BFCOL | MGADWG_BITBLT |
- MGADWG_SHIFTZERO | MGADWG_RSTR | (0x0C << 16) |
- MGADWG_TRANSC;
- colorkey = src->format->colorkey;
- switch (dst->format->BytesPerPixel) {
- case 1:
- colorkey |= (colorkey<<8);
- case 2:
- colorkey |= (colorkey<<16);
- break;
- }
- mga_wait(2);
- mga_out32(MGAREG_FCOL, colorkey);
- mga_out32(MGAREG_BCOL, 0xFFFFFFFF);
- } else {
- blitop = MGADWG_BFCOL | MGADWG_BITBLT |
- MGADWG_SHIFTZERO | MGADWG_RSTR | (0x0C << 16);
- }
- mga_wait(7);
- mga_out32(MGAREG_SGN, sign);
- mga_out32(MGAREG_AR3, start);
- mga_out32(MGAREG_AR0, stop);
- mga_out32(MGAREG_AR5, skip);
- mga_out32(MGAREG_FXBNDRY, (dstX | ((dstX + w-1) << 16)));
- mga_out32(MGAREG_YDSTLEN, (dstY << 16) | h);
- mga_out32(MGAREG_DWGCTL + MGAREG_EXEC, blitop);
- FB_AddBusySurface(src);
- FB_AddBusySurface(dst);
- if ( dst == this->screen ) {
- SDL_mutexV(hw_lock);
- }
- return(0);
- }
- static int CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst)
- {
- int accelerated;
- /* Set initial acceleration on */
- src->flags |= SDL_HWACCEL;
- /* Set the surface attributes */
- if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
- if ( ! this->info.blit_hw_A ) {
- src->flags &= ~SDL_HWACCEL;
- }
- }
- if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
- if ( ! this->info.blit_hw_CC ) {
- src->flags &= ~SDL_HWACCEL;
- }
- }
- /* Check to see if final surface blit is accelerated */
- accelerated = !!(src->flags & SDL_HWACCEL);
- if ( accelerated ) {
- src->map->hw_blit = HWAccelBlit;
- }
- return(accelerated);
- }
- void FB_MatroxAccel(_THIS, __u32 card)
- {
- /* We have hardware accelerated surface functions */
- this->CheckHWBlit = CheckHWBlit;
- wait_vbl = WaitVBL;
- wait_idle = WaitIdle;
- /* The Matrox has an accelerated color fill */
- this->info.blit_fill = 1;
- this->FillHWRect = FillHWRect;
- /* The Matrox has accelerated normal and colorkey blits. */
- this->info.blit_hw = 1;
- /* The Millenium I appears to do the colorkey test a word
- at a time, and the transparency is intverted. (?)
- */
- if ( card != FB_ACCEL_MATROX_MGA2064W ) {
- this->info.blit_hw_CC = 1;
- this->SetHWColorKey = SetHWColorKey;
- }
- #if 0 /* Not yet implemented? */
- /* The Matrox G200/G400 has an accelerated alpha blit */
- if ( (card == FB_ACCEL_MATROX_MGAG200)
- || (card == FB_ACCEL_MATROX_MGAG400)
- ) {
- this->info.blit_hw_A = 1;
- this->SetHWAlpha = SetHWAlpha;
- }
- #endif
- }