| /* |
| SDL - Simple DirectMedia Layer |
| Copyright (C) 2003 Sam Hocevar |
| |
| 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 Hocevar |
| sam@zoy.org |
| */ |
| |
| #ifdef SAVE_RCSID |
| static char rcsid = |
| "@(#) $Id: libsdl-1.2.11-libcaca.patch,v 1.1 2006/09/18 16:06:06 mr_bones_ Exp $"; |
| #endif |
| |
| /* libcaca based SDL video driver implementation. |
| */ |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <sys/stat.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 "../../events/SDL_events_c.h" |
| |
| #include "SDL_cacavideo.h" |
| #include "SDL_cacaevents_c.h" |
| |
| #include <caca.h> |
| #ifdef CACA_API_VERSION_1 |
| #include <caca0.h> |
| #endif |
| |
| /* Initialization/Query functions */ |
| static int Caca_VideoInit(_THIS, SDL_PixelFormat *vformat); |
| static SDL_Rect **Caca_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); |
| static SDL_Surface *Caca_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); |
| static void Caca_VideoQuit(_THIS); |
| |
| /* Hardware surface functions */ |
| static int Caca_AllocHWSurface(_THIS, SDL_Surface *surface); |
| static int Caca_LockHWSurface(_THIS, SDL_Surface *surface); |
| static int Caca_FlipHWSurface(_THIS, SDL_Surface *surface); |
| static void Caca_UnlockHWSurface(_THIS, SDL_Surface *surface); |
| static void Caca_FreeHWSurface(_THIS, SDL_Surface *surface); |
| |
| /* Cache the VideoDevice struct */ |
| static struct SDL_VideoDevice *local_this; |
| |
| /* libcaca driver bootstrap functions */ |
| |
| static int Caca_Available(void) |
| { |
| return 1; /* Always available ! */ |
| } |
| |
| static void Caca_DeleteDevice(SDL_VideoDevice *device) |
| { |
| free(device->hidden); |
| free(device); |
| } |
| static SDL_VideoDevice *Caca_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 = Caca_VideoInit; |
| device->ListModes = Caca_ListModes; |
| device->SetVideoMode = Caca_SetVideoMode; |
| device->CreateYUVOverlay = NULL; |
| device->SetColors = NULL; |
| device->UpdateRects = NULL; |
| device->VideoQuit = Caca_VideoQuit; |
| device->AllocHWSurface = Caca_AllocHWSurface; |
| device->CheckHWBlit = NULL; |
| device->FillHWRect = NULL; |
| device->SetHWColorKey = NULL; |
| device->SetHWAlpha = NULL; |
| device->LockHWSurface = Caca_LockHWSurface; |
| device->UnlockHWSurface = Caca_UnlockHWSurface; |
| device->FlipHWSurface = NULL; |
| device->FreeHWSurface = Caca_FreeHWSurface; |
| device->SetCaption = NULL; |
| device->SetIcon = NULL; |
| device->IconifyWindow = NULL; |
| device->GrabInput = NULL; |
| device->GetWMInfo = NULL; |
| device->InitOSKeymap = Caca_InitOSKeymap; |
| device->PumpEvents = Caca_PumpEvents; |
| |
| device->free = Caca_DeleteDevice; |
| |
| return device; |
| } |
| |
| VideoBootStrap CACA_bootstrap = { |
| "caca", "Color ASCII Art Library", |
| Caca_Available, Caca_CreateDevice |
| }; |
| |
| int Caca_VideoInit(_THIS, SDL_PixelFormat *vformat) |
| { |
| int i; |
| |
| /* Initialize all variables that we clean on shutdown */ |
| for ( i=0; i<SDL_NUMMODES; ++i ) { |
| SDL_modelist[i] = malloc(sizeof(SDL_Rect)); |
| SDL_modelist[i]->x = SDL_modelist[i]->y = 0; |
| } |
| /* Modes sorted largest to smallest */ |
| SDL_modelist[0]->w = 1024; SDL_modelist[0]->h = 768; |
| SDL_modelist[1]->w = 800; SDL_modelist[1]->h = 600; |
| SDL_modelist[2]->w = 640; SDL_modelist[2]->h = 480; |
| SDL_modelist[3]->w = 320; SDL_modelist[3]->h = 400; |
| SDL_modelist[4]->w = 320; SDL_modelist[4]->h = 240; |
| SDL_modelist[5]->w = 320; SDL_modelist[5]->h = 200; |
| SDL_modelist[6] = NULL; |
| |
| Caca_mutex = SDL_CreateMutex(); |
| |
| /* Initialize the library */ |
| if ( caca_init() != 0 ) { |
| SDL_SetError("Unable to initialize libcaca"); |
| return(-1); |
| } |
| |
| /* Initialize private variables */ |
| Caca_lastkey = 0; |
| Caca_bitmap = NULL; |
| Caca_buffer = NULL; |
| |
| local_this = this; |
| |
| /* Determine the screen depth (use default 8-bit depth) */ |
| vformat->BitsPerPixel = 8; |
| vformat->BytesPerPixel = 1; |
| |
| /* We're done! */ |
| return(0); |
| } |
| |
| SDL_Rect **Caca_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) |
| { |
| if(format->BitsPerPixel != 8) |
| return NULL; |
| |
| if ( flags & SDL_FULLSCREEN ) { |
| return SDL_modelist; |
| } else { |
| return (SDL_Rect **) -1; |
| } |
| } |
| |
| /* Various screen update functions available */ |
| static void Caca_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); |
| |
| SDL_Surface *Caca_SetVideoMode(_THIS, SDL_Surface *current, |
| int width, int height, int bpp, Uint32 flags) |
| { |
| if ( Caca_buffer ) { |
| free( Caca_buffer ); |
| Caca_buffer = NULL; |
| } |
| |
| if ( Caca_bitmap ) { |
| caca_free_bitmap( Caca_bitmap ); |
| Caca_bitmap = NULL; |
| } |
| |
| Caca_buffer = malloc(2 * ((width + 15) & ~15) * height); |
| if ( ! Caca_buffer ) { |
| SDL_SetError("Couldn't allocate buffer for requested mode"); |
| return(NULL); |
| } |
| |
| memset(Caca_buffer, 0, 2 * ((width + 15) & ~15) * height); |
| |
| /* Allocate the new pixel format for the screen */ |
| if ( ! SDL_ReallocFormat(current, 16, 0xf800, 0x07e0, 0x001f, 0) ) { |
| return(NULL); |
| } |
| |
| /* Set up the new mode framebuffer */ |
| current->flags = SDL_FULLSCREEN; |
| Caca_w = current->w = width; |
| Caca_h = current->h = height; |
| current->pitch = 2 * ((width + 15) & ~15); |
| current->pixels = Caca_buffer; |
| |
| /* Create the libcaca bitmap */ |
| Caca_bitmap = caca_create_bitmap( 16, width, height, current->pitch, 0xf800, 0x07e0, 0x001f, 0x0000 ); |
| if ( ! Caca_bitmap ) { |
| SDL_SetError("Couldn't allocate libcaca bitmap"); |
| return(NULL); |
| } |
| |
| /* Set the blit function */ |
| this->UpdateRects = Caca_DirectUpdate; |
| |
| /* We're done */ |
| return(current); |
| } |
| |
| /* We don't actually allow hardware surfaces other than the main one */ |
| static int Caca_AllocHWSurface(_THIS, SDL_Surface *surface) |
| { |
| return(-1); |
| } |
| static void Caca_FreeHWSurface(_THIS, SDL_Surface *surface) |
| { |
| return; |
| } |
| |
| /* We need to wait for vertical retrace on page flipped displays */ |
| static int Caca_LockHWSurface(_THIS, SDL_Surface *surface) |
| { |
| /* TODO ? */ |
| return(0); |
| } |
| static void Caca_UnlockHWSurface(_THIS, SDL_Surface *surface) |
| { |
| return; |
| } |
| |
| /* FIXME: How is this done with libcaca? */ |
| static int Caca_FlipHWSurface(_THIS, SDL_Surface *surface) |
| { |
| SDL_mutexP(Caca_mutex); |
| caca_refresh(); |
| SDL_mutexV(Caca_mutex); |
| return(0); |
| } |
| |
| static void Caca_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) |
| { |
| SDL_mutexP(Caca_mutex); |
| caca_draw_bitmap( 0, 0, caca_get_width() - 1, caca_get_height() - 1, |
| Caca_bitmap, Caca_buffer ); |
| caca_refresh(); |
| SDL_mutexV(Caca_mutex); |
| return; |
| } |
| |
| /* Note: If we are terminated, this could be called in the middle of |
| another SDL video routine -- notably UpdateRects. |
| */ |
| void Caca_VideoQuit(_THIS) |
| { |
| int i; |
| |
| /* Free video mode lists */ |
| for ( i=0; i<SDL_NUMMODES; ++i ) { |
| if ( SDL_modelist[i] != NULL ) { |
| free(SDL_modelist[i]); |
| SDL_modelist[i] = NULL; |
| } |
| } |
| |
| if ( Caca_bitmap ) { |
| caca_free_bitmap( Caca_bitmap ); |
| Caca_bitmap = NULL; |
| } |
| |
| caca_end(); |
| |
| SDL_DestroyMutex(Caca_mutex); |
| } |
| |