SDL_gsvideo.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:19k
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_gsvideo.c,v 1.3 2002/04/22 21:38:05 wmay Exp $";
- #endif
- /* Framebuffer console based SDL video driver implementation.
- */
- #include <stdlib.h>
- #include <stdio.h>
- #include <fcntl.h>
- #include <unistd.h>
- #include <sys/ioctl.h>
- #include <sys/mman.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_cursor_c.h"
- #include "SDL_gsvideo.h"
- #include "SDL_gsmouse_c.h"
- #include "SDL_gsevents_c.h"
- #include "SDL_gsyuv_c.h"
- /* Initialization/Query functions */
- static int GS_VideoInit(_THIS, SDL_PixelFormat *vformat);
- static SDL_Rect **GS_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
- static SDL_Surface *GS_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
- static int GS_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors);
- static void GS_VideoQuit(_THIS);
- /* Hardware surface functions */
- static int GS_AllocHWSurface(_THIS, SDL_Surface *surface);
- static int GS_LockHWSurface(_THIS, SDL_Surface *surface);
- static void GS_UnlockHWSurface(_THIS, SDL_Surface *surface);
- static void GS_FreeHWSurface(_THIS, SDL_Surface *surface);
- /* GS driver bootstrap functions */
- static int GS_Available(void)
- {
- int console, memory;
- console = open(PS2_DEV_GS, O_RDWR, 0);
- if ( console >= 0 ) {
- close(console);
- }
- memory = open(PS2_DEV_MEM, O_RDWR, 0);
- if ( memory >= 0 ) {
- close(memory);
- }
- return((console >= 0) && (memory >= 0));
- }
- static void GS_DeleteDevice(SDL_VideoDevice *device)
- {
- free(device->hidden);
- free(device);
- }
- static SDL_VideoDevice *GS_CreateDevice(int devindex)
- {
- SDL_VideoDevice *this;
- /* Initialize all variables that we clean on shutdown */
- this = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));
- if ( this ) {
- memset(this, 0, (sizeof *this));
- this->hidden = (struct SDL_PrivateVideoData *)
- malloc((sizeof *this->hidden));
- }
- if ( (this == NULL) || (this->hidden == NULL) ) {
- SDL_OutOfMemory();
- if ( this ) {
- free(this);
- }
- return(0);
- }
- memset(this->hidden, 0, (sizeof *this->hidden));
- mouse_fd = -1;
- keyboard_fd = -1;
- /* Set the function pointers */
- this->VideoInit = GS_VideoInit;
- this->ListModes = GS_ListModes;
- this->SetVideoMode = GS_SetVideoMode;
- this->CreateYUVOverlay = GS_CreateYUVOverlay;
- this->SetColors = GS_SetColors;
- this->UpdateRects = NULL;
- this->VideoQuit = GS_VideoQuit;
- this->AllocHWSurface = GS_AllocHWSurface;
- this->CheckHWBlit = NULL;
- this->FillHWRect = NULL;
- this->SetHWColorKey = NULL;
- this->SetHWAlpha = NULL;
- this->LockHWSurface = GS_LockHWSurface;
- this->UnlockHWSurface = GS_UnlockHWSurface;
- this->FlipHWSurface = NULL;
- this->FreeHWSurface = GS_FreeHWSurface;
- this->SetIcon = NULL;
- this->SetCaption = NULL;
- this->GetWMInfo = NULL;
- this->FreeWMCursor = GS_FreeWMCursor;
- this->CreateWMCursor = GS_CreateWMCursor;
- this->ShowWMCursor = GS_ShowWMCursor;
- this->MoveWMCursor = GS_MoveWMCursor;
- this->InitOSKeymap = GS_InitOSKeymap;
- this->PumpEvents = GS_PumpEvents;
- this->free = GS_DeleteDevice;
- return this;
- }
- VideoBootStrap PS2GS_bootstrap = {
- "ps2gs", "PlayStation 2 Graphics Synthesizer",
- GS_Available, GS_CreateDevice
- };
- /* These are the pixel formats for the 32, 24, and 16 bit video modes */
- static struct {
- int bpp;
- Uint32 r;
- Uint32 g;
- Uint32 b;
- } GS_pixelmasks[] = {
- { 32, 0x000000FF, /* RGB little-endian */
- 0x0000FF00,
- 0x00FF0000 },
- { 24, 0x000000FF, /* RGB little-endian */
- 0x0000FF00,
- 0x00FF0000 },
- { 16, 0x0000001f, /* RGB little-endian */
- 0x000003e0,
- 0x00007c00 },
- };
- /* This is a mapping from SDL bytes-per-pixel to GS pixel format */
- static int GS_formatmap[] = {
- -1, /* 0 bpp, not a legal value */
- -1, /* 8 bpp, not supported (yet?) */
- PS2_GS_PSMCT16, /* 16 bpp */
- PS2_GS_PSMCT24, /* 24 bpp */
- PS2_GS_PSMCT32 /* 32 bpp */
- };
- static unsigned long long head_tags[] __attribute__((aligned(16))) = {
- 4 | (1LL << 60), /* GIFtag */
- 0x0e, /* A+D */
- 0, /* 2 */
- PS2_GS_BITBLTBUF,
- 0, /* 4 */
- PS2_GS_TRXPOS,
- 0, /* 6 */
- PS2_GS_TRXREG,
- 0, /* 8 */
- PS2_GS_TRXDIR
- };
- #define MAXIMG (32767 * 16)
- #define MAXTAGS 8
- static inline int loadimage_nonblock(int fd, struct ps2_image *image, int size,
- unsigned long long *hm,
- unsigned long long *im)
- {
- struct ps2_plist plist;
- struct ps2_packet packet[1 + MAXTAGS * 2];
- int isize;
- int pnum, it, eop;
- char *data;
- /* initialize the variables */
- data = (char *)image->ptr;
- pnum = it = eop = 0;
- plist.packet = packet;
- /* make BITBLT packet */
- packet[pnum].ptr = hm;
- packet[pnum].len = sizeof(head_tags);
- pnum++;
- hm[2] = ((unsigned long long)image->fbp << 32) |
- ((unsigned long long)image->fbw << 48) |
- ((unsigned long long)image->psm << 56);
- hm[4] = ((unsigned long long)image->x << 32) |
- ((unsigned long long)image->y << 48);
- hm[6] = (unsigned long long)image->w |
- ((unsigned long long)image->h << 32);
- /* make image mode tags */
- while (!eop) {
- isize = size > MAXIMG ? MAXIMG : size;
- size -= isize;
- eop = (size == 0);
- packet[pnum].ptr = &im[it];
- packet[pnum].len = sizeof(unsigned long long) * 2;
- pnum++;
- im[it++] = (isize >> 4) | (eop ? (1 << 15) : 0) | (2LL << 58);
- im[it++] = 0;
- packet[pnum].ptr = (void *)data;
- packet[pnum].len = isize;
- pnum++;
- data += isize;
- }
- plist.num = pnum;
- return ioctl(fd, PS2IOC_SENDL, &plist);
- }
- static unsigned long long tex_tags[] __attribute__((aligned(16))) = {
- 3 | (1LL << 60), /* GIFtag */
- 0x0e, /* A+D */
- 0, /* 2 */
- PS2_GS_TEX0_1,
- (1 << 5) + (1 << 6),
- PS2_GS_TEX1_1,
- 0,
- PS2_GS_TEXFLUSH
- };
- static unsigned long long scale_tags[] __attribute__((aligned(16))) = {
- 5 | (1LL << 60), /* GIFtag */
- 0x0e, /* A+D */
- 6 + (1 << 4) + (1 << 8),
- PS2_GS_PRIM,
- ((unsigned long long)0 * 16) + (((unsigned long long)0 * 16) << 16),
- PS2_GS_UV,
- ((unsigned long long)0 * 16) + (((unsigned long long)0 * 16) << 16),
- PS2_GS_XYZ2,
- 0, /* 8 */
- PS2_GS_UV,
- 0, /* 10 */
- PS2_GS_XYZ2
- };
- int scaleimage_nonblock(int fd, unsigned long long *tm, unsigned long long *sm)
- {
- struct ps2_plist plist;
- struct ps2_packet packet[2];
- /* initialize the variables */
- plist.num = 2;
- plist.packet = packet;
- packet[0].ptr = tm;
- packet[0].len = sizeof(tex_tags);
- packet[1].ptr = sm;
- packet[1].len = sizeof(scale_tags);
- return ioctl(fd, PS2IOC_SENDL, &plist);
- }
- static int power_of_2(int value)
- {
- int shift;
- for ( shift = 0; (1<<shift) < value; ++shift ) {
- /* Keep looking */ ;
- }
- return(shift);
- }
- static int GS_VideoInit(_THIS, SDL_PixelFormat *vformat)
- {
- struct ps2_screeninfo vinfo;
- /* Initialize the library */
- console_fd = open(PS2_DEV_GS, O_RDWR, 0);
- if ( console_fd < 0 ) {
- SDL_SetError("Unable to open %s", PS2_DEV_GS);
- return(-1);
- }
- memory_fd = open(PS2_DEV_MEM, O_RDWR, 0);
- if ( memory_fd < 0 ) {
- close(console_fd);
- console_fd = -1;
- SDL_SetError("Unable to open %s", PS2_DEV_MEM);
- return(-1);
- }
- /* Determine the current screen depth */
- if ( ioctl(console_fd, PS2IOC_GSCREENINFO, &vinfo) < 0 ) {
- close(memory_fd);
- close(console_fd);
- console_fd = -1;
- SDL_SetError("Couldn't get console pixel format");
- return(-1);
- }
- switch (vinfo.psm) {
- /* Supported pixel formats */
- case PS2_GS_PSMCT32:
- case PS2_GS_PSMCT24:
- case PS2_GS_PSMCT16:
- break;
- default:
- GS_VideoQuit(this);
- SDL_SetError("Unknown console pixel format: %d", vinfo.psm);
- return(-1);
- }
- vformat->BitsPerPixel = GS_pixelmasks[vinfo.psm].bpp;
- vformat->Rmask = GS_pixelmasks[vinfo.psm].r;
- vformat->Gmask = GS_pixelmasks[vinfo.psm].g;
- vformat->Bmask = GS_pixelmasks[vinfo.psm].b;
- saved_vinfo = vinfo;
- /* Enable mouse and keyboard support */
- if ( GS_OpenKeyboard(this) < 0 ) {
- GS_VideoQuit(this);
- SDL_SetError("Unable to open keyboard");
- return(-1);
- }
- if ( GS_OpenMouse(this) < 0 ) {
- const char *sdl_nomouse;
- sdl_nomouse = getenv("SDL_NOMOUSE");
- if ( ! sdl_nomouse ) {
- GS_VideoQuit(this);
- SDL_SetError("Unable to open mouse");
- return(-1);
- }
- }
- /* We're done! */
- return(0);
- }
- static SDL_Rect **GS_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
- {
- static SDL_Rect GS_vesa_mode_list[] = {
- { 0, 0, 1280, 1024 },
- { 0, 0, 1024, 768 },
- { 0, 0, 800, 600 },
- { 0, 0, 640, 480 }
- };
- static SDL_Rect *GS_vesa_modes[] = {
- &GS_vesa_mode_list[0],
- &GS_vesa_mode_list[1],
- &GS_vesa_mode_list[2],
- &GS_vesa_mode_list[3],
- NULL
- };
- static SDL_Rect GS_tvout_stretch;
- static SDL_Rect GS_tvout_mode;
- static SDL_Rect *GS_tvout_modes[3];
- SDL_Rect **modes = NULL;
- switch (format->BitsPerPixel) {
- case 16:
- case 24:
- case 32:
- if ( saved_vinfo.mode == PS2_GS_VESA ) {
- modes = GS_vesa_modes;
- } else {
- int i, j = 0;
- // FIXME - what's wrong with the stretch code at 16 bpp?
- if ( format->BitsPerPixel != 32 ) break;
- /* Add a mode that we could possibly stretch to */
- for ( i=0; GS_vesa_modes[i]; ++i ) {
- if ( (GS_vesa_modes[i]->w == saved_vinfo.w) &&
- (GS_vesa_modes[i]->h != saved_vinfo.h) ) {
- GS_tvout_stretch.w=GS_vesa_modes[i]->w;
- GS_tvout_stretch.h=GS_vesa_modes[i]->h;
- GS_tvout_modes[j++] = &GS_tvout_stretch;
- break;
- }
- }
- /* Add the current TV video mode */
- GS_tvout_mode.w = saved_vinfo.w;
- GS_tvout_mode.h = saved_vinfo.h;
- GS_tvout_modes[j++] = &GS_tvout_mode;
- GS_tvout_modes[j++] = NULL;
- /* Return the created list of modes */
- modes = GS_tvout_modes;
- }
- break;
- default:
- break;
- }
- return(modes);
- }
- /* Various screen update functions available */
- static void GS_DMAFullUpdate(_THIS, int numrects, SDL_Rect *rects);
- static SDL_Surface *GS_SetVideoMode(_THIS, SDL_Surface *current,
- int width, int height, int bpp, Uint32 flags)
- {
- struct ps2_screeninfo vinfo;
- /* Set the terminal into graphics mode */
- if ( GS_EnterGraphicsMode(this) < 0 ) {
- return(NULL);
- }
- /* Set the video mode and get the final screen format */
- if ( ioctl(console_fd, PS2IOC_GSCREENINFO, &vinfo) < 0 ) {
- SDL_SetError("Couldn't get console screen info");
- return(NULL);
- }
- if ( (vinfo.w != width) || (vinfo.h != height) ||
- (GS_pixelmasks[vinfo.psm].bpp != bpp) ) {
- /* If we're not in VESA mode, we have to scale resolution */
- if ( saved_vinfo.mode == PS2_GS_VESA ) {
- switch (width) {
- case 640:
- vinfo.res = PS2_GS_640x480;
- break;
- case 800:
- vinfo.res = PS2_GS_800x600;
- break;
- case 1024:
- vinfo.res = PS2_GS_1024x768;
- break;
- case 1280:
- vinfo.res = PS2_GS_1280x1024;
- break;
- default:
- SDL_SetError("Unsupported resolution: %dx%dn",
- width, height);
- return(NULL);
- }
- vinfo.res |= (PS2_GS_75Hz << 8);
- vinfo.w = width;
- vinfo.h = height;
- }
- vinfo.fbp = 0;
- vinfo.psm = GS_formatmap[bpp/8];
- if ( vinfo.psm < 0 ) {
- SDL_SetError("Unsupported depth: %d bppn", bpp);
- return(NULL);
- }
- if ( ioctl(console_fd, PS2IOC_SSCREENINFO, &vinfo) < 0 ) {
- SDL_SetError("Couldn't set console screen info");
- return(NULL);
- }
- /* Unmap the previous DMA buffer */
- if ( mapped_mem ) {
- munmap(mapped_mem, mapped_len);
- mapped_mem = NULL;
- }
- }
- if ( ! SDL_ReallocFormat(current, GS_pixelmasks[vinfo.psm].bpp,
- GS_pixelmasks[vinfo.psm].r,
- GS_pixelmasks[vinfo.psm].g,
- GS_pixelmasks[vinfo.psm].b, 0) ) {
- return(NULL);
- }
- /* Set up the new mode framebuffer */
- current->flags = SDL_FULLSCREEN;
- current->w = width;
- current->h = height;
- current->pitch = SDL_CalculatePitch(current);
- /* Memory map the DMA area for block memory transfer */
- if ( ! mapped_mem ) {
- pixels_len = height * current->pitch;
- mapped_len = pixels_len +
- /* Screen update DMA command area */
- sizeof(head_tags) + ((2 * MAXTAGS) * 16);
- if ( saved_vinfo.mode != PS2_GS_VESA ) {
- mapped_len += sizeof(tex_tags) + sizeof(scale_tags);
- }
- mapped_mem = mmap(0, mapped_len, PROT_READ|PROT_WRITE,
- MAP_SHARED, memory_fd, 0);
- if ( mapped_mem == MAP_FAILED ) {
- SDL_SetError("Unable to map %d bytes for DMA",
- mapped_len);
- mapped_mem = NULL;
- return(NULL);
- }
- /* Set up the entire screen for DMA transfer */
- screen_image.ptr = mapped_mem;
- screen_image.fbp = 0;
- screen_image.fbw = (vinfo.w + 63) / 64;
- screen_image.psm = vinfo.psm;
- screen_image.x = 0;
- if ( vinfo.h == height ) {
- screen_image.y = 0;
- } else {
- /* Put image offscreen and scale to screen height */
- screen_image.y = vinfo.h;
- }
- screen_image.w = current->w;
- screen_image.h = current->h;
- /* get screen image data size (qword aligned) */
- screen_image_size = (screen_image.w * screen_image.h);
- switch (screen_image.psm) {
- case PS2_GS_PSMCT32:
- screen_image_size *= 4;
- break;
- case PS2_GS_PSMCT24:
- screen_image_size *= 3;
- break;
- case PS2_GS_PSMCT16:
- screen_image_size *= 2;
- break;
- }
- screen_image_size = (screen_image_size + 15) & ~15;
- /* Set up the memory for screen update DMA commands */
- head_tags_mem = (unsigned long long *)
- (mapped_mem + pixels_len);
- image_tags_mem = (unsigned long long *)
- ((caddr_t)head_tags_mem + sizeof(head_tags));
- memcpy(head_tags_mem, head_tags, sizeof(head_tags));
- if ( saved_vinfo.mode != PS2_GS_VESA ) {
- tex_tags_mem = (unsigned long long *)
- ((caddr_t)image_tags_mem + ((2*MAXTAGS)*16));
- scale_tags_mem = (unsigned long long *)
- ((caddr_t)tex_tags_mem + sizeof(tex_tags));
- memcpy(tex_tags_mem, tex_tags, sizeof(tex_tags));
- tex_tags_mem[2] =
- (vinfo.h * vinfo.w) / 64 +
- ((unsigned long long)screen_image.fbw << 14) +
- ((unsigned long long)screen_image.psm << 20) +
- ((unsigned long long)power_of_2(screen_image.w) << 26) +
- ((unsigned long long)power_of_2(screen_image.h) << 30) +
- ((unsigned long long)1 << 34) +
- ((unsigned long long)1 << 35);
- memcpy(scale_tags_mem, scale_tags, sizeof(scale_tags));
- scale_tags_mem[8] =
- ((unsigned long long)screen_image.w * 16) +
- (((unsigned long long)screen_image.h * 16) << 16);
- scale_tags_mem[10] =
- ((unsigned long long)vinfo.w * 16) +
- (((unsigned long long)vinfo.h * 16) << 16);
- }
- }
- current->pixels = NULL;
- if ( getenv("SDL_FULLSCREEN_UPDATE") ) {
- /* Correct semantics */
- current->flags |= SDL_ASYNCBLIT;
- } else {
- /* We lie here - the screen memory isn't really the visible
- display memory and still requires an update, but this
- has the desired effect for most applications.
- */
- current->flags |= SDL_HWSURFACE;
- }
- /* Set the update rectangle function */
- this->UpdateRects = GS_DMAFullUpdate;
- /* We're done */
- return(current);
- }
- /* We don't support hardware surfaces yet */
- static int GS_AllocHWSurface(_THIS, SDL_Surface *surface)
- {
- return(-1);
- }
- static void GS_FreeHWSurface(_THIS, SDL_Surface *surface)
- {
- return;
- }
- static int GS_LockHWSurface(_THIS, SDL_Surface *surface)
- {
- if ( surface == this->screen ) {
- /* Since mouse motion affects 'pixels', lock it */
- SDL_LockCursor();
- /* Make sure any pending DMA has completed */
- if ( dma_pending ) {
- ioctl(console_fd, PS2IOC_SENDQCT, 1);
- dma_pending = 0;
- }
- /* If the cursor is drawn on the DMA area, remove it */
- if ( cursor_drawn ) {
- surface->pixels = mapped_mem + surface->offset;
- SDL_EraseCursorNoLock(this->screen);
- cursor_drawn = 0;
- }
- /* Set the surface pixels to the base of the DMA area */
- surface->pixels = mapped_mem;
- /* We're finished! */
- SDL_UnlockCursor();
- }
- return(0);
- }
- static void GS_UnlockHWSurface(_THIS, SDL_Surface *surface)
- {
- if ( surface == this->screen ) {
- /* Since mouse motion affects 'pixels', lock it */
- SDL_LockCursor();
- surface->pixels = NULL;
- SDL_UnlockCursor();
- }
- }
- static void GS_DMAFullUpdate(_THIS, int numrects, SDL_Rect *rects)
- {
- /* Lock so we aren't interrupted by a mouse update */
- SDL_LockCursor();
- /* Make sure any pending DMA has completed */
- if ( dma_pending ) {
- ioctl(console_fd, PS2IOC_SENDQCT, 1);
- dma_pending = 0;
- }
- /* If the mouse is visible, draw it on the DMA area */
- if ( (SDL_cursorstate & CURSOR_VISIBLE) && !cursor_drawn ) {
- this->screen->pixels = mapped_mem + this->screen->offset;
- SDL_DrawCursorNoLock(this->screen);
- this->screen->pixels = NULL;
- cursor_drawn = 1;
- }
- /* Put the image onto the screen */
- loadimage_nonblock(console_fd,
- &screen_image, screen_image_size,
- head_tags_mem, image_tags_mem);
- if ( screen_image.y > 0 ) {
- /* Need to scale offscreen image to TV output */
- ioctl(console_fd, PS2IOC_SENDQCT, 1);
- dma_pending = 0;
- scaleimage_nonblock(console_fd, tex_tags_mem, scale_tags_mem);
- } else {
- dma_pending = 1;
- }
- /* We're finished! */
- SDL_UnlockCursor();
- }
- static int GS_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
- {
- return(0);
- }
- static void GS_VideoQuit(_THIS)
- {
- /* Close console and input file descriptors */
- if ( console_fd > 0 ) {
- /* Unmap the video framebuffer */
- if ( mapped_mem ) {
- /* Unmap the video framebuffer */
- munmap(mapped_mem, mapped_len);
- mapped_mem = NULL;
- }
- close(memory_fd);
- /* Restore the original video mode */
- if ( GS_InGraphicsMode(this) ) {
- ioctl(console_fd, PS2IOC_SSCREENINFO, &saved_vinfo);
- }
- /* We're all done with the graphics device */
- close(console_fd);
- console_fd = -1;
- }
- GS_CloseMouse(this);
- GS_CloseKeyboard(this);
- }