/
SDL_DirectFB_video.c
1165 lines (953 loc) · 31.5 KB
/
SDL_DirectFB_video.c
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2006 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
MGA CRTC2 support by Thomas Jarosch - tomj@simonv.com
CRTC2 support is inspired by mplayer's dfbmga driver
written by Ville Syrj��<syrjala@sci.fi>
*/
/* DirectFB video driver implementation.
*/
#include <fcntl.h>
#include <unistd.h>
#include <sys/mman.h>
#include <directfb.h>
#include <directfb_version.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_DirectFB_video.h"
#include "SDL_DirectFB_events.h"
#include "SDL_DirectFB_yuv.h"
/* The implementation dependent data for the window manager cursor */
struct WMcursor {
int unused;
};
/* Initialization/Query functions */
static int DirectFB_VideoInit(_THIS, SDL_PixelFormat *vformat);
static SDL_Rect **DirectFB_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
static SDL_Surface *DirectFB_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
static int DirectFB_SetColors(_THIS, int firstcolor, int ncolors,
SDL_Color *colors);
static void DirectFB_VideoQuit(_THIS);
/* Hardware surface functions */
static int DirectFB_AllocHWSurface(_THIS, SDL_Surface *surface);
static int DirectFB_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *dstrect, Uint32 color);
static int DirectFB_LockHWSurface(_THIS, SDL_Surface *surface);
static void DirectFB_UnlockHWSurface(_THIS, SDL_Surface *surface);
static void DirectFB_FreeHWSurface(_THIS, SDL_Surface *surface);
static int DirectFB_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst);
static int DirectFB_HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
SDL_Surface *dst, SDL_Rect *dstrect);
static int DirectFB_SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key);
static int DirectFB_SetHWAlpha(_THIS, SDL_Surface *surface, Uint8 alpha);
static int DirectFB_FlipHWSurface(_THIS, SDL_Surface *surface);
static int DirectFB_ShowWMCursor(_THIS, WMcursor *cursor);
/* Various screen update functions available */
static void DirectFB_DirectUpdate(_THIS, int numrects, SDL_Rect *rects);
static void DirectFB_WindowedUpdate(_THIS, int numrects, SDL_Rect *rects);
/* This is the rect EnumModes2 uses */
struct DirectFBEnumRect {
SDL_Rect r;
struct DirectFBEnumRect* next;
};
static struct DirectFBEnumRect *enumlist = NULL;
/* DirectFB driver bootstrap functions */
static int DirectFB_Available(void)
{
return 1;
}
static void DirectFB_DeleteDevice(SDL_VideoDevice *device)
{
SDL_free(device->hidden);
SDL_free(device);
}
static SDL_VideoDevice *DirectFB_CreateDevice(int devindex)
{
SDL_VideoDevice *device;
/* Initialize all variables that we clean on shutdown */
device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice));
if (device)
{
SDL_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);
}
SDL_memset (device->hidden, 0, sizeof (*device->hidden));
/* Set the function pointers */
device->VideoInit = DirectFB_VideoInit;
device->ListModes = DirectFB_ListModes;
device->SetVideoMode = DirectFB_SetVideoMode;
device->SetColors = DirectFB_SetColors;
device->UpdateRects = NULL;
device->CreateYUVOverlay = DirectFB_CreateYUVOverlay;
device->VideoQuit = DirectFB_VideoQuit;
device->AllocHWSurface = DirectFB_AllocHWSurface;
device->CheckHWBlit = DirectFB_CheckHWBlit;
device->FillHWRect = DirectFB_FillHWRect;
device->SetHWColorKey = DirectFB_SetHWColorKey;
device->SetHWAlpha = DirectFB_SetHWAlpha;
device->LockHWSurface = DirectFB_LockHWSurface;
device->UnlockHWSurface = DirectFB_UnlockHWSurface;
device->FlipHWSurface = DirectFB_FlipHWSurface;
device->FreeHWSurface = DirectFB_FreeHWSurface;
device->ShowWMCursor = DirectFB_ShowWMCursor;
device->SetCaption = NULL;
device->SetIcon = NULL;
device->IconifyWindow = NULL;
device->GrabInput = NULL;
device->GetWMInfo = NULL;
device->InitOSKeymap = DirectFB_InitOSKeymap;
device->PumpEvents = DirectFB_PumpEvents;
device->free = DirectFB_DeleteDevice;
return device;
}
VideoBootStrap DirectFB_bootstrap = {
"directfb", "DirectFB",
DirectFB_Available, DirectFB_CreateDevice
};
static DFBSurfacePixelFormat GetFormatForBpp (int bpp, IDirectFBDisplayLayer *layer)
{
DFBDisplayLayerConfig dlc;
int bytes = (bpp + 7) / 8;
layer->GetConfiguration (layer, &dlc);
if (bytes == DFB_BYTES_PER_PIXEL(dlc.pixelformat) && bytes > 1)
return dlc.pixelformat;
switch (bytes)
{
case 1:
return DSPF_LUT8;
case 2:
return DSPF_RGB16;
case 3:
return DSPF_RGB24;
case 4:
return DSPF_RGB32;
}
return DSPF_UNKNOWN;
}
static DFBEnumerationResult EnumModesCallback (int width,
int height,
int bpp,
void *data)
{
SDL_VideoDevice *this = (SDL_VideoDevice *)data;
struct DirectFBEnumRect *enumrect;
HIDDEN->nummodes++;
enumrect = SDL_calloc(1, sizeof(struct DirectFBEnumRect));
if (!enumrect)
{
SDL_OutOfMemory();
return DFENUM_CANCEL;
}
enumrect->r.w = (Uint16)width;
enumrect->r.h = (Uint16)height;
enumrect->next = enumlist;
enumlist = enumrect;
return DFENUM_OK;
}
struct private_hwdata {
IDirectFBSurface *surface;
IDirectFBPalette *palette;
};
void SetDirectFBerror (const char *function, DFBResult code)
{
const char *error = DirectFBErrorString (code);
if (error)
SDL_SetError("%s: %s", function, error);
else
SDL_SetError("Unknown error code from %s", function);
}
static DFBSurfacePixelFormat SDLToDFBPixelFormat (SDL_PixelFormat *format)
{
if (format->Rmask && format->Gmask && format->Bmask)
{
switch (format->BitsPerPixel)
{
case 8:
return DSPF_LUT8;
case 16:
if (format->Rmask == 0xF800 &&
format->Gmask == 0x07E0 &&
format->Bmask == 0x001F)
return DSPF_RGB16;
/* fall through */
case 15:
if (format->Rmask == 0x7C00 &&
format->Gmask == 0x03E0 &&
format->Bmask == 0x001F)
return DSPF_ARGB1555;
break;
case 24:
if (format->Rmask == 0xFF0000 &&
format->Gmask == 0x00FF00 &&
format->Bmask == 0x0000FF)
return DSPF_RGB24;
break;
case 32:
if (format->Rmask == 0xFF0000 &&
format->Gmask == 0x00FF00 &&
format->Bmask == 0x0000FF)
{
if (format->Amask == 0xFF000000)
return DSPF_ARGB;
else
return DSPF_RGB32;
}
break;
}
}
else
{
switch (format->BitsPerPixel)
{
case 8:
return DSPF_LUT8;
case 15:
return DSPF_ARGB1555;
case 16:
return DSPF_RGB16;
case 24:
return DSPF_RGB24;
case 32:
return DSPF_RGB32;
}
}
return DSPF_UNKNOWN;
}
static SDL_Palette *AllocatePalette(int size)
{
SDL_Palette *palette;
SDL_Color *colors;
palette = SDL_calloc (1, sizeof(SDL_Palette));
if (!palette)
{
SDL_OutOfMemory();
return NULL;
}
colors = SDL_calloc (size, sizeof(SDL_Color));
if (!colors)
{
SDL_OutOfMemory();
return NULL;
}
palette->ncolors = size;
palette->colors = colors;
return palette;
}
static int DFBToSDLPixelFormat (DFBSurfacePixelFormat pixelformat, SDL_PixelFormat *format)
{
format->Amask = format->Rmask = format->Gmask = format->Bmask = 0;
format->BitsPerPixel = format->BytesPerPixel = 0;
switch (pixelformat)
{
case DSPF_A8:
format->Amask = 0x000000FF;
break;
case DSPF_ARGB1555:
format->Rmask = 0x00007C00;
format->Gmask = 0x000003E0;
format->Bmask = 0x0000001F;
break;
case DSPF_RGB16:
format->Rmask = 0x0000F800;
format->Gmask = 0x000007E0;
format->Bmask = 0x0000001F;
break;
case DSPF_ARGB:
format->Amask = 0; /* apps don't seem to like that: 0xFF000000; */
/* fall through */
case DSPF_RGB24:
case DSPF_RGB32:
format->Rmask = 0x00FF0000;
format->Gmask = 0x0000FF00;
format->Bmask = 0x000000FF;
break;
case DSPF_LUT8:
format->Rmask = 0x000000FF;
format->Gmask = 0x000000FF;
format->Bmask = 0x000000FF;
if (!format->palette)
format->palette = AllocatePalette(256);
break;
default:
fprintf (stderr, "SDL_DirectFB: Unsupported pixelformat (0x%08x)!\n", pixelformat);
return -1;
}
format->BitsPerPixel = DFB_BYTES_PER_PIXEL(pixelformat) * 8;
format->BytesPerPixel = DFB_BYTES_PER_PIXEL(pixelformat);
return 0;
}
int DirectFB_VideoInit(_THIS, SDL_PixelFormat *vformat)
{
int i;
DFBResult ret;
#if (DIRECTFB_MAJOR_VERSION == 0) && (DIRECTFB_MINOR_VERSION == 9) && (DIRECTFB_MICRO_VERSION < 23)
DFBCardCapabilities caps;
#else
DFBGraphicsDeviceDescription caps;
#endif
DFBDisplayLayerConfig dlc;
struct DirectFBEnumRect *rect;
IDirectFB *dfb = NULL;
IDirectFBDisplayLayer *layer = NULL;
IDirectFBEventBuffer *events = NULL;
HIDDEN->c2layer = NULL, HIDDEN->c2frame = NULL;
HIDDEN->enable_mga_crtc2 = 0;
HIDDEN->mga_crtc2_stretch_overscan = 1;
ret = DirectFBInit (NULL, NULL);
if (ret)
{
SetDirectFBerror ("DirectFBInit", ret);
goto error;
}
ret = DirectFBCreate (&dfb);
if (ret)
{
SetDirectFBerror ("DirectFBCreate", ret);
goto error;
}
ret = dfb->GetDisplayLayer (dfb, DLID_PRIMARY, &layer);
if (ret)
{
SetDirectFBerror ("dfb->GetDisplayLayer", ret);
goto error;
}
ret = dfb->CreateInputEventBuffer (dfb, DICAPS_ALL, DFB_FALSE, &events);
if (ret)
{
SetDirectFBerror ("dfb->CreateEventBuffer", ret);
goto error;
}
layer->EnableCursor (layer, 1);
/* Query layer configuration to determine the current mode and pixelformat */
layer->GetConfiguration (layer, &dlc);
/* If current format is not supported use LUT8 as the default */
if (DFBToSDLPixelFormat (dlc.pixelformat, vformat))
DFBToSDLPixelFormat (DSPF_LUT8, vformat);
/* Enumerate the available fullscreen modes */
ret = dfb->EnumVideoModes (dfb, EnumModesCallback, this);
if (ret)
{
SetDirectFBerror ("dfb->EnumVideoModes", ret);
goto error;
}
HIDDEN->modelist = SDL_calloc (HIDDEN->nummodes + 1, sizeof(SDL_Rect *));
if (!HIDDEN->modelist)
{
SDL_OutOfMemory();
goto error;
}
for (i = 0, rect = enumlist; rect; ++i, rect = rect->next )
{
HIDDEN->modelist[i] = &rect->r;
}
HIDDEN->modelist[i] = NULL;
/* Query card capabilities to get the video memory size */
#if (DIRECTFB_MAJOR_VERSION == 0) && (DIRECTFB_MINOR_VERSION == 9) && (DIRECTFB_MICRO_VERSION < 23)
dfb->GetCardCapabilities (dfb, &caps);
#else
dfb->GetDeviceDescription (dfb, &caps);
#endif
this->info.wm_available = 1;
this->info.hw_available = 1;
this->info.blit_hw = 1;
this->info.blit_hw_CC = 1;
this->info.blit_hw_A = 1;
this->info.blit_fill = 1;
this->info.video_mem = caps.video_memory / 1024;
HIDDEN->initialized = 1;
HIDDEN->dfb = dfb;
HIDDEN->layer = layer;
HIDDEN->eventbuffer = events;
if (SDL_getenv("SDL_DIRECTFB_MGA_CRTC2") != NULL)
HIDDEN->enable_mga_crtc2 = 1;
if (HIDDEN->enable_mga_crtc2)
{
DFBDisplayLayerConfig dlc;
DFBDisplayLayerConfigFlags failed;
ret = dfb->GetDisplayLayer (dfb, 2, &HIDDEN->c2layer);
if (ret)
{
SetDirectFBerror ("dfb->GetDisplayLayer(CRTC2)", ret);
goto error;
}
ret = HIDDEN->layer->SetCooperativeLevel(HIDDEN->layer, DLSCL_EXCLUSIVE);
if (ret)
{
SetDirectFBerror ("layer->SetCooperativeLevel(CRTC2, EXCLUSIVE)", ret);
goto error;
}
ret = HIDDEN->c2layer->SetCooperativeLevel(HIDDEN->c2layer, DLSCL_EXCLUSIVE);
if (ret)
{
SetDirectFBerror ("c2layer->SetCooperativeLevel(CRTC2, EXCLUSIVE)", ret);
goto error;
}
HIDDEN->c2layer->SetOpacity(HIDDEN->c2layer, 0x0);
/* Init the surface here as it got a fixed size */
dlc.flags = DLCONF_PIXELFORMAT | DLCONF_BUFFERMODE;
dlc.buffermode = DLBM_BACKVIDEO;
dlc.pixelformat = DSPF_RGB32;
ret = HIDDEN->c2layer->TestConfiguration( HIDDEN->c2layer, &dlc, &failed );
if (ret)
{
SetDirectFBerror ("c2layer->TestConfiguration", ret);
goto error;
}
ret = HIDDEN->c2layer->SetConfiguration( HIDDEN->c2layer, &dlc );
if (ret)
{
SetDirectFBerror ("c2layer->SetConfiguration", ret);
goto error;
}
ret = HIDDEN->c2layer->GetSurface( HIDDEN->c2layer, &HIDDEN->c2frame );
if (ret)
{
SetDirectFBerror ("c2layer->GetSurface", ret);
goto error;
}
HIDDEN->c2framesize.x = 0;
HIDDEN->c2framesize.y = 0;
HIDDEN->c2frame->GetSize( HIDDEN->c2frame, &HIDDEN->c2framesize.w, &HIDDEN->c2framesize.h);
HIDDEN->c2frame->SetBlittingFlags( HIDDEN->c2frame, DSBLIT_NOFX );
HIDDEN->c2frame->SetColor( HIDDEN->c2frame, 0, 0, 0, 0xff );
/* Clear CRTC2 */
HIDDEN->c2frame->Clear(HIDDEN->c2frame, 0, 0, 0, 0xff );
HIDDEN->c2frame->Flip(HIDDEN->c2frame, NULL, 0 );
HIDDEN->c2frame->Clear(HIDDEN->c2frame, 0, 0, 0, 0xff );
HIDDEN->c2frame->Flip(HIDDEN->c2frame, NULL, 0 );
HIDDEN->c2frame->Clear(HIDDEN->c2frame, 0, 0, 0, 0xff );
HIDDEN->c2layer->SetOpacity(HIDDEN->c2layer, 0xFF );
/* Check if overscan is possibly set */
if (SDL_getenv("SDL_DIRECTFB_MGA_OVERSCAN") != NULL)
{
float overscan = 0;
if (SDL_sscanf(SDL_getenv("SDL_DIRECTFB_MGA_OVERSCAN"), "%f", &overscan) == 1)
if (overscan > 0 && overscan < 2)
HIDDEN->mga_crtc2_stretch_overscan = overscan;
}
#ifdef DIRECTFB_CRTC2_DEBUG
printf("CRTC2 overscan: %f\n", HIDDEN->mga_crtc2_stretch_overscan);
#endif
}
return 0;
error:
if (events)
events->Release (events);
if (HIDDEN->c2frame)
HIDDEN->c2frame->Release (HIDDEN->c2frame);
if (HIDDEN->c2layer)
HIDDEN->c2layer->Release (HIDDEN->c2layer);
if (layer)
layer->Release (layer);
if (dfb)
dfb->Release (dfb);
return -1;
}
static SDL_Rect **DirectFB_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
{
if (flags & SDL_FULLSCREEN)
return HIDDEN->modelist;
else
if (SDLToDFBPixelFormat (format) != DSPF_UNKNOWN)
return (SDL_Rect**) -1;
return NULL;
}
static SDL_Surface *DirectFB_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags)
{
DFBResult ret;
DFBSurfaceDescription dsc;
DFBSurfacePixelFormat pixelformat;
IDirectFBSurface *surface;
fprintf (stderr, "SDL DirectFB_SetVideoMode: %dx%d@%d, flags: 0x%08x\n",
width, height, bpp, flags);
flags |= SDL_FULLSCREEN;
/* Release previous primary surface */
if (current->hwdata && current->hwdata->surface)
{
current->hwdata->surface->Release (current->hwdata->surface);
current->hwdata->surface = NULL;
/* And its palette if present */
if (current->hwdata->palette)
{
current->hwdata->palette->Release (current->hwdata->palette);
current->hwdata->palette = NULL;
}
}
else if (!current->hwdata)
{
/* Allocate the hardware acceleration data */
current->hwdata = (struct private_hwdata *) SDL_calloc (1, sizeof(*current->hwdata));
if (!current->hwdata)
{
SDL_OutOfMemory();
return NULL;
}
}
/* Set cooperative level depending on flag SDL_FULLSCREEN */
if (flags & SDL_FULLSCREEN)
{
ret = HIDDEN->dfb->SetCooperativeLevel (HIDDEN->dfb, DFSCL_FULLSCREEN);
if (ret && !HIDDEN->enable_mga_crtc2)
{
DirectFBError ("dfb->SetCooperativeLevel", ret);
flags &= ~SDL_FULLSCREEN;
}
}
else
HIDDEN->dfb->SetCooperativeLevel (HIDDEN->dfb, DFSCL_NORMAL);
/* Set video mode */
ret = HIDDEN->dfb->SetVideoMode (HIDDEN->dfb, width, height, bpp);
if (ret)
{
if (flags & SDL_FULLSCREEN)
{
flags &= ~SDL_FULLSCREEN;
HIDDEN->dfb->SetCooperativeLevel (HIDDEN->dfb, DFSCL_NORMAL);
ret = HIDDEN->dfb->SetVideoMode (HIDDEN->dfb, width, height, bpp);
}
if (ret)
{
SetDirectFBerror ("dfb->SetVideoMode", ret);
return NULL;
}
}
/* Create primary surface */
dsc.flags = DSDESC_CAPS | DSDESC_PIXELFORMAT;
dsc.caps = DSCAPS_PRIMARY | ((flags & SDL_DOUBLEBUF) ? DSCAPS_FLIPPING : 0);
dsc.pixelformat = GetFormatForBpp (bpp, HIDDEN->layer);
ret = HIDDEN->dfb->CreateSurface (HIDDEN->dfb, &dsc, &surface);
if (ret && (flags & SDL_DOUBLEBUF))
{
/* Try without double buffering */
dsc.caps &= ~DSCAPS_FLIPPING;
ret = HIDDEN->dfb->CreateSurface (HIDDEN->dfb, &dsc, &surface);
}
if (ret)
{
SetDirectFBerror ("dfb->CreateSurface", ret);
return NULL;
}
current->w = width;
current->h = height;
current->flags = SDL_HWSURFACE | SDL_PREALLOC;
if (flags & SDL_FULLSCREEN)
{
current->flags |= SDL_FULLSCREEN;
this->UpdateRects = DirectFB_DirectUpdate;
}
else
this->UpdateRects = DirectFB_WindowedUpdate;
if (dsc.caps & DSCAPS_FLIPPING)
current->flags |= SDL_DOUBLEBUF;
surface->GetPixelFormat (surface, &pixelformat);
DFBToSDLPixelFormat (pixelformat, current->format);
/* Get the surface palette (if supported) */
if (DFB_PIXELFORMAT_IS_INDEXED( pixelformat ))
{
surface->GetPalette (surface, ¤t->hwdata->palette);
current->flags |= SDL_HWPALETTE;
}
current->hwdata->surface = surface;
/* MGA CRTC2 stuff */
if (HIDDEN->enable_mga_crtc2)
{
/* no stretching if c2ssize == c2framesize */
HIDDEN->c2ssize.x = 0, HIDDEN->c2ssize.y = 0;
HIDDEN->c2ssize.w = width;
HIDDEN->c2ssize.h = height;
HIDDEN->c2dsize.x = 0, HIDDEN->c2dsize.y = 0;
HIDDEN->c2dsize.w = width;
HIDDEN->c2dsize.h = height;
HIDDEN->mga_crtc2_stretch = 0;
if (SDL_getenv("SDL_DIRECTFB_MGA_STRETCH") != NULL)
{
/* Normally assume a picture aspect ratio of 4:3 */
int zoom_aspect_x = 4, zoom_aspect_y = 3, i, j;
for (i = 1; i < 20; i++)
{
for (j = 1; j < 10; j++)
{
if ((float)width/(float)i*(float)j == height)
{
zoom_aspect_x = i;
zoom_aspect_y = j;
/* break the loop */
i = 21;
break;
}
}
}
#ifdef DIRECTFB_CRTC2_DEBUG
printf("Source resolution: X: %d, Y: %d, Aspect ratio: %d:%d\n", width, height, zoom_aspect_x, zoom_aspect_y);
printf("CRTC2 resolution: X: %d, Y: %d\n", HIDDEN->c2framesize.w, HIDDEN->c2framesize.h);
#endif
/* don't stretch only slightly smaller/larger images */
if ((float)width < (float)HIDDEN->c2framesize.w*0.95 || (float)height < (float)HIDDEN->c2framesize.h*0.95)
{
while ((float)HIDDEN->c2dsize.w < (float)HIDDEN->c2framesize.w*HIDDEN->mga_crtc2_stretch_overscan && (float)HIDDEN->c2dsize.h < (float)HIDDEN->c2framesize.h*HIDDEN->mga_crtc2_stretch_overscan)
{
HIDDEN->c2dsize.w+=zoom_aspect_x;
HIDDEN->c2dsize.h+=zoom_aspect_y;
}
/* one step down */
HIDDEN->c2dsize.w-=zoom_aspect_x;
HIDDEN->c2dsize.h-=zoom_aspect_y;
#ifdef DIRECTFB_CRTC2_DEBUG
printf("Stretched resolution: X: %d, Y: %d\n", HIDDEN->c2dsize.w, HIDDEN->c2dsize.h);
#endif
HIDDEN->mga_crtc2_stretch = 1;
}
else if ((float)width > (float)HIDDEN->c2framesize.w*0.95 || (float)height > (float)HIDDEN->c2framesize.h*0.95)
{
while ((float)HIDDEN->c2dsize.w > (float)HIDDEN->c2framesize.w*HIDDEN->mga_crtc2_stretch_overscan || (float)HIDDEN->c2dsize.h > (float)HIDDEN->c2framesize.h*HIDDEN->mga_crtc2_stretch_overscan)
{
HIDDEN->c2dsize.w-=zoom_aspect_x;
HIDDEN->c2dsize.h-=zoom_aspect_y;
}
#ifdef DIRECTFB_CRTC2_DEBUG
printf("Down-Stretched resolution: X: %d, Y: %d\n", HIDDEN->c2dsize.w, HIDDEN->c2dsize.h);
#endif
HIDDEN->mga_crtc2_stretch = 1;
} else {
#ifdef DIRECTFB_CRTC2_DEBUG
printf("Not stretching image\n");
#endif
}
/* Panning */
if (HIDDEN->c2framesize.w > HIDDEN->c2dsize.w)
HIDDEN->c2dsize.x = (HIDDEN->c2framesize.w - HIDDEN->c2dsize.w) / 2;
else
HIDDEN->c2dsize.x = (HIDDEN->c2dsize.w - HIDDEN->c2framesize.w) / 2;
if (HIDDEN->c2framesize.h > HIDDEN->c2dsize.h)
HIDDEN->c2dsize.y = (HIDDEN->c2framesize.h - HIDDEN->c2dsize.h) / 2;
else
HIDDEN->c2dsize.y = (HIDDEN->c2dsize.h - HIDDEN->c2framesize.h) / 2;
#ifdef DIRECTFB_CRTC2_DEBUG
printf("CRTC2 position X: %d, Y: %d\n", HIDDEN->c2dsize.x, HIDDEN->c2dsize.y);
#endif
}
}
return current;
}
static int DirectFB_AllocHWSurface(_THIS, SDL_Surface *surface)
{
DFBResult ret;
DFBSurfaceDescription dsc;
/* fprintf(stderr, "SDL: DirectFB_AllocHWSurface (%dx%d@%d, flags: 0x%08x)\n",
surface->w, surface->h, surface->format->BitsPerPixel, surface->flags);*/
if (surface->w < 8 || surface->h < 8)
return -1;
/* fill surface description */
dsc.flags = DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT | DSDESC_CAPS;
dsc.width = surface->w;
dsc.height = surface->h;
dsc.caps = (surface->flags & SDL_DOUBLEBUF) ? DSCAPS_FLIPPING : 0;
/* find the right pixelformat */
dsc.pixelformat = SDLToDFBPixelFormat (surface->format);
if (dsc.pixelformat == DSPF_UNKNOWN)
return -1;
/* Allocate the hardware acceleration data */
surface->hwdata = (struct private_hwdata *) SDL_calloc (1, sizeof(*surface->hwdata));
if (surface->hwdata == NULL)
{
SDL_OutOfMemory();
return -1;
}
/* Create the surface */
ret = HIDDEN->dfb->CreateSurface (HIDDEN->dfb, &dsc, &surface->hwdata->surface);
if (ret)
{
SetDirectFBerror ("dfb->CreateSurface", ret);
free (surface->hwdata);
surface->hwdata = NULL;
return -1;
}
surface->flags |= SDL_HWSURFACE | SDL_PREALLOC;
return 0;
}
static void DirectFB_FreeHWSurface(_THIS, SDL_Surface *surface)
{
if (surface->hwdata && HIDDEN->initialized)
{
surface->hwdata->surface->Release (surface->hwdata->surface);
free (surface->hwdata);
surface->hwdata = NULL;
}
}
static int DirectFB_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst)
{
/* fprintf(stderr, "SDL: DirectFB_CheckHWBlit (src->hwdata: %p, dst->hwdata: %p)\n",
src->hwdata, dst->hwdata);*/
if (!src->hwdata || !dst->hwdata)
return 0;
src->flags |= SDL_HWACCEL;
src->map->hw_blit = DirectFB_HWAccelBlit;
return 1;
}
static int DirectFB_HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect,
SDL_Surface *dst, SDL_Rect *dstrect)
{
DFBSurfaceBlittingFlags flags = DSBLIT_NOFX;
DFBRectangle sr = { srcrect->x, srcrect->y, srcrect->w, srcrect->h };
DFBRectangle dr = { dstrect->x, dstrect->y, dstrect->w, dstrect->h };
IDirectFBSurface *surface = dst->hwdata->surface;
if (src->flags & SDL_SRCCOLORKEY)
{
flags |= DSBLIT_SRC_COLORKEY;
DirectFB_SetHWColorKey (NULL, src, src->format->colorkey);
}
if (src->flags & SDL_SRCALPHA)
{
flags |= DSBLIT_BLEND_COLORALPHA;
surface->SetColor (surface, 0xff, 0xff, 0xff, src->format->alpha);
}
surface->SetBlittingFlags (surface, flags);
if (sr.w == dr.w && sr.h == dr.h)
surface->Blit (surface, src->hwdata->surface, &sr, dr.x, dr.y);
else
surface->StretchBlit (surface, src->hwdata->surface, &sr, &dr);
return 0;
}
static int DirectFB_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *dstrect, Uint32 color)
{
SDL_PixelFormat *fmt = dst->format;
IDirectFBSurface *surface = dst->hwdata->surface;
/* ugly */
surface->SetColor (surface,
(color & fmt->Rmask) >> (fmt->Rshift - fmt->Rloss),
(color & fmt->Gmask) >> (fmt->Gshift - fmt->Gloss),
(color & fmt->Bmask) << (fmt->Bloss - fmt->Bshift), 0xFF);
surface->FillRectangle (surface, dstrect->x, dstrect->y, dstrect->w, dstrect->h);
return 0;
}
static int DirectFB_SetHWColorKey(_THIS, SDL_Surface *src, Uint32 key)
{
SDL_PixelFormat *fmt = src->format;
IDirectFBSurface *surface = src->hwdata->surface;
if (fmt->BitsPerPixel == 8)
surface->SetSrcColorKeyIndex (surface, key);
else
/* ugly */
surface->SetSrcColorKey (surface,
(key & fmt->Rmask) >> (fmt->Rshift - fmt->Rloss),
(key & fmt->Gmask) >> (fmt->Gshift - fmt->Gloss),
(key & fmt->Bmask) << (fmt->Bloss - fmt->Bshift));
return 0;
}
static int DirectFB_SetHWAlpha(_THIS, SDL_Surface *surface, Uint8 alpha)
{
return 0;
}
static int DirectFB_FlipHWSurface(_THIS, SDL_Surface *surface)
{
if (HIDDEN->enable_mga_crtc2)
{
int rtn = surface->hwdata->surface->Flip (surface->hwdata->surface, NULL, 0);
if (HIDDEN->mga_crtc2_stretch)
HIDDEN->c2frame->StretchBlit(HIDDEN->c2frame, surface->hwdata->surface, &HIDDEN->c2ssize, &HIDDEN->c2dsize);
else
HIDDEN->c2frame->Blit(HIDDEN->c2frame, surface->hwdata->surface, NULL, HIDDEN->c2dsize.x, HIDDEN->c2dsize.y);
HIDDEN->c2frame->Flip(HIDDEN->c2frame, NULL, DSFLIP_WAITFORSYNC);
return rtn;
}
else
return surface->hwdata->surface->Flip (surface->hwdata->surface, NULL, DSFLIP_WAITFORSYNC);
}
static int DirectFB_LockHWSurface(_THIS, SDL_Surface *surface)
{
DFBResult ret;
void *data;
int pitch;
ret = surface->hwdata->surface->Lock (surface->hwdata->surface,
DSLF_WRITE, &data, &pitch);
if (ret)
{
SetDirectFBerror ("surface->Lock", ret);
return -1;
}
surface->pixels = data;
surface->pitch = pitch;
return 0;
}
static void DirectFB_UnlockHWSurface(_THIS, SDL_Surface *surface)
{
surface->hwdata->surface->Unlock (surface->hwdata->surface);
surface->pixels = NULL;
}
static void DirectFB_DirectUpdate(_THIS, int numrects, SDL_Rect *rects)
{
if (HIDDEN->enable_mga_crtc2)
{
if (HIDDEN->mga_crtc2_stretch)
HIDDEN->c2frame->StretchBlit(HIDDEN->c2frame, this->screen->hwdata->surface, &HIDDEN->c2ssize, &HIDDEN->c2dsize);
else
HIDDEN->c2frame->Blit(HIDDEN->c2frame, this->screen->hwdata->surface, NULL, HIDDEN->c2dsize.x, HIDDEN->c2dsize.y);
HIDDEN->c2frame->Flip(HIDDEN->c2frame, NULL, DSFLIP_WAITFORSYNC);
}
}
static void DirectFB_WindowedUpdate(_THIS, int numrects, SDL_Rect *rects)
{
DFBRegion region;
int i;
int region_valid = 0;
IDirectFBSurface *surface = this->screen->hwdata->surface;
for (i=0; i<numrects; ++i)
{
int x2, y2;