/*

Simple DirectMedia Layer

Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>

This software is provided 'as-is', without any express or implied

warranty. In no event will the authors be held liable for any damages

arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,

including commercial applications, and to alter it and redistribute it

freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not

claim that you wrote the original software. If you use this software

in a product, an acknowledgment in the product documentation would be

appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be

misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

*/

#include "SDL_DirectFB_video.h"

#include "SDL_DirectFB_modes.h"

#define DFB_MAX_MODES 200

struct screen_callback_t

};

struct modes_callback_t

};

static DFBEnumerationResult

EnumModesCallback(int width, int height, int bpp, void *data)

{

struct modes_callback_t *modedata = (struct modes_callback_t *) data;

SDL_DisplayMode mode;

mode.w = width;

mode.h = height;

mode.refresh_rate = 0;

mode.driverdata = NULL;

mode.format = SDL_PIXELFORMAT_UNKNOWN;

if (modedata->nummodes < DFB_MAX_MODES) {

modedata->modelist[modedata->nummodes++] = mode;

}

return DFENUM_OK;

}

static DFBEnumerationResult

EnumScreensCallback(DFBScreenID screen_id, DFBScreenDescription desc,

void *callbackdata)

{

struct screen_callback_t *devdata = (struct screen_callback_t *) callbackdata;

devdata->screenid[devdata->numscreens++] = screen_id;

return DFENUM_OK;

}

static DFBEnumerationResult

EnumLayersCallback(DFBDisplayLayerID layer_id, DFBDisplayLayerDescription desc,

void *callbackdata)

{

struct screen_callback_t *devdata = (struct screen_callback_t *) callbackdata;

if (desc.caps & DLCAPS_SURFACE) {

if ((desc.type & DLTF_GRAPHICS) && (desc.type & DLTF_VIDEO)) {

if (devdata->vidlayer[devdata->aux] == -1)

devdata->vidlayer[devdata->aux] = layer_id;

} else if (desc.type & DLTF_GRAPHICS) {

if (devdata->gralayer[devdata->aux] == -1)

devdata->gralayer[devdata->aux] = layer_id;

}

}

return DFENUM_OK;

}

static void

CheckSetDisplayMode(_THIS, SDL_VideoDisplay * display, DFB_DisplayData * data, SDL_DisplayMode * mode)

{

SDL_DFB_DEVICEDATA(_this);

DFBDisplayLayerConfig config;

DFBDisplayLayerConfigFlags failed;

SDL_DFB_CHECKERR(data->layer->SetCooperativeLevel(data->layer,

DLSCL_ADMINISTRATIVE));

config.width = mode->w;

config.height = mode->h;

config.pixelformat = DirectFB_SDLToDFBPixelFormat(mode->format);

config.flags = DLCONF_WIDTH | DLCONF_HEIGHT | DLCONF_PIXELFORMAT;

if (devdata->use_yuv_underlays) {

config.flags |= DLCONF_OPTIONS;

config.options = DLOP_ALPHACHANNEL;

}

failed = 0;

data->layer->TestConfiguration(data->layer, &config, &failed);

SDL_DFB_CHECKERR(data->layer->SetCooperativeLevel(data->layer,

DLSCL_SHARED));

if (failed == 0)

{

SDL_AddDisplayMode(display, mode);

SDL_DFB_LOG("Mode %d x %d Added\n", mode->w, mode->h);

}

else

SDL_DFB_ERR("Mode %d x %d not available: %x\n", mode->w,

mode->h, failed);

return;

error:

return;

}

void

DirectFB_SetContext(_THIS, SDL_Window *window)

{

#if (DFB_VERSION_ATLEAST(1,0,0))

/* FIXME: does not work on 1.0/1.2 with radeon driver

* the approach did work with the matrox driver

* This has simply no effect.

*/

SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);

DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;

/* FIXME: should we handle the error */

if (dispdata->vidIDinuse)

SDL_DFB_CHECK(dispdata->vidlayer->SwitchContext(dispdata->vidlayer,

DFB_TRUE));

#endif

}

void

DirectFB_InitModes(_THIS)

{

SDL_DFB_DEVICEDATA(_this);

IDirectFBDisplayLayer *layer = NULL;

SDL_VideoDisplay display;

DFB_DisplayData *dispdata = NULL;

SDL_DisplayMode mode;

DFBGraphicsDeviceDescription caps;

DFBDisplayLayerConfig dlc;

struct screen_callback_t *screencbdata;

int tcw[DFB_MAX_SCREENS];

int tch[DFB_MAX_SCREENS];

int i;

DFBResult ret;

SDL_DFB_ALLOC_CLEAR(screencbdata, sizeof(*screencbdata));

screencbdata->numscreens = 0;

for (i = 0; i < DFB_MAX_SCREENS; i++) {

screencbdata->gralayer[i] = -1;

screencbdata->vidlayer[i] = -1;

}

SDL_DFB_CHECKERR(devdata->dfb->EnumScreens(devdata->dfb, &EnumScreensCallback,

screencbdata));

for (i = 0; i < screencbdata->numscreens; i++) {

IDirectFBScreen *screen;

SDL_DFB_CHECKERR(devdata->dfb->GetScreen(devdata->dfb,

screencbdata->screenid

[i], &screen));

screencbdata->aux = i;

SDL_DFB_CHECKERR(screen->EnumDisplayLayers(screen, &EnumLayersCallback,

screencbdata));

screen->GetSize(screen, &tcw[i], &tch[i]);

screen->Release(screen);

}

/* Query card capabilities */

devdata->dfb->GetDeviceDescription(devdata->dfb, &caps);

for (i = 0; i < screencbdata->numscreens; i++) {

SDL_DFB_CHECKERR(devdata->dfb->GetDisplayLayer(devdata->dfb,

screencbdata->gralayer

[i], &layer));

SDL_DFB_CHECKERR(layer->SetCooperativeLevel(layer,

DLSCL_ADMINISTRATIVE));

layer->EnableCursor(layer, 1);

SDL_DFB_CHECKERR(layer->SetCursorOpacity(layer, 0xC0));

if (devdata->use_yuv_underlays) {

dlc.flags = DLCONF_PIXELFORMAT | DLCONF_OPTIONS;

dlc.pixelformat = DSPF_ARGB;

dlc.options = DLOP_ALPHACHANNEL;

ret = layer->SetConfiguration(layer, &dlc);

if (ret != DFB_OK) {

/* try AiRGB if the previous failed */

dlc.pixelformat = DSPF_AiRGB;

SDL_DFB_CHECKERR(layer->SetConfiguration(layer, &dlc));

}

}

/* Query layer configuration to determine the current mode and pixelformat */

dlc.flags = DLCONF_ALL;

SDL_DFB_CHECKERR(layer->GetConfiguration(layer, &dlc));

mode.format = DirectFB_DFBToSDLPixelFormat(dlc.pixelformat);

if (mode.format == SDL_PIXELFORMAT_UNKNOWN) {

SDL_DFB_ERR("Unknown dfb pixelformat %x !\n", dlc.pixelformat);

goto error;

}

mode.w = dlc.width;

mode.h = dlc.height;

mode.refresh_rate = 0;

mode.driverdata = NULL;

SDL_DFB_ALLOC_CLEAR(dispdata, sizeof(*dispdata));

dispdata->layer = layer;

dispdata->pixelformat = dlc.pixelformat;

dispdata->cw = tcw[i];

dispdata->ch = tch[i];

/* YUV - Video layer */

dispdata->vidID = screencbdata->vidlayer[i];

dispdata->vidIDinuse = 0;

SDL_zero(display);

display.desktop_mode = mode;

display.current_mode = mode;

display.driverdata = dispdata;

#if (DFB_VERSION_ATLEAST(1,2,0))

dlc.flags =

DLCONF_WIDTH | DLCONF_HEIGHT | DLCONF_PIXELFORMAT |

DLCONF_OPTIONS;

ret = layer->SetConfiguration(layer, &dlc);

#endif

SDL_DFB_CHECKERR(layer->SetCooperativeLevel(layer, DLSCL_SHARED));

SDL_AddVideoDisplay(&display);

}

SDL_DFB_FREE(screencbdata);

return;

error:

/* FIXME: Cleanup not complete, Free existing displays */

SDL_DFB_FREE(dispdata);

SDL_DFB_RELEASE(layer);

return;

}

void

DirectFB_GetDisplayModes(_THIS, SDL_VideoDisplay * display)

{

SDL_DFB_DEVICEDATA(_this);

DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;

SDL_DisplayMode mode;

struct modes_callback_t data;

int i;

data.nummodes = 0;

/* Enumerate the available fullscreen modes */

SDL_DFB_CALLOC(data.modelist, DFB_MAX_MODES, sizeof(SDL_DisplayMode));

SDL_DFB_CHECKERR(devdata->dfb->EnumVideoModes(devdata->dfb,

EnumModesCallback, &data));

for (i = 0; i < data.nummodes; ++i) {

mode = data.modelist[i];

mode.format = SDL_PIXELFORMAT_ARGB8888;

CheckSetDisplayMode(_this, display, dispdata, &mode);

mode.format = SDL_PIXELFORMAT_RGB888;

CheckSetDisplayMode(_this, display, dispdata, &mode);

mode.format = SDL_PIXELFORMAT_RGB24;

CheckSetDisplayMode(_this, display, dispdata, &mode);

mode.format = SDL_PIXELFORMAT_RGB565;

CheckSetDisplayMode(_this, display, dispdata, &mode);

mode.format = SDL_PIXELFORMAT_INDEX8;

CheckSetDisplayMode(_this, display, dispdata, &mode);

}

SDL_DFB_FREE(data.modelist);

error:

return;

}

int

DirectFB_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)

{

/*

* FIXME: video mode switch is currently broken for 1.2.0

*

*/

SDL_DFB_DEVICEDATA(_this);

DFB_DisplayData *data = (DFB_DisplayData *) display->driverdata;

DFBDisplayLayerConfig config, rconfig;

DFBDisplayLayerConfigFlags fail = 0;

SDL_DFB_CHECKERR(data->layer->SetCooperativeLevel(data->layer,

DLSCL_ADMINISTRATIVE));

SDL_DFB_CHECKERR(data->layer->GetConfiguration(data->layer, &config));

config.flags = DLCONF_WIDTH | DLCONF_HEIGHT;

if (mode->format != SDL_PIXELFORMAT_UNKNOWN) {

config.flags |= DLCONF_PIXELFORMAT;

config.pixelformat = DirectFB_SDLToDFBPixelFormat(mode->format);

data->pixelformat = config.pixelformat;

}

config.width = mode->w;

config.height = mode->h;

if (devdata->use_yuv_underlays) {

config.flags |= DLCONF_OPTIONS;

config.options = DLOP_ALPHACHANNEL;

}

data->layer->TestConfiguration(data->layer, &config, &fail);

if (fail &

(DLCONF_WIDTH | DLCONF_HEIGHT | DLCONF_PIXELFORMAT |

DLCONF_OPTIONS)) {

SDL_DFB_ERR("Error setting mode %dx%d-%x\n", mode->w, mode->h,

mode->format);

return -1;

}

config.flags &= ~fail;

SDL_DFB_CHECKERR(data->layer->SetConfiguration(data->layer, &config));

#if (DFB_VERSION_ATLEAST(1,2,0))

/* Need to call this twice ! */

SDL_DFB_CHECKERR(data->layer->SetConfiguration(data->layer, &config));

#endif

/* Double check */

SDL_DFB_CHECKERR(data->layer->GetConfiguration(data->layer, &rconfig));

SDL_DFB_CHECKERR(data->

layer->SetCooperativeLevel(data->layer, DLSCL_SHARED));

if ((config.width != rconfig.width) || (config.height != rconfig.height)

|| ((mode->format != SDL_PIXELFORMAT_UNKNOWN)

&& (config.pixelformat != rconfig.pixelformat))) {

SDL_DFB_ERR("Error setting mode %dx%d-%x\n", mode->w, mode->h,

mode->format);

return -1;

}

data->pixelformat = rconfig.pixelformat;

data->cw = config.width;

data->ch = config.height;

display->current_mode = *mode;

return 0;

error:

return -1;

}

void

DirectFB_QuitModes(_THIS)

{

SDL_DisplayMode tmode;

int i;

for (i = 0; i < _this->num_displays; ++i) {

SDL_VideoDisplay *display = &_this->displays[i];

DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;

SDL_GetDesktopDisplayMode(i, &tmode);

tmode.format = SDL_PIXELFORMAT_UNKNOWN;

DirectFB_SetDisplayMode(_this, display, &tmode);

SDL_GetDesktopDisplayMode(i, &tmode);

DirectFB_SetDisplayMode(_this, display, &tmode);

if (dispdata->layer) {

SDL_DFB_CHECK(dispdata->

layer->SetCooperativeLevel(dispdata->layer,

DLSCL_ADMINISTRATIVE));

SDL_DFB_CHECK(dispdata->

layer->SetCursorOpacity(dispdata->layer, 0x00));

SDL_DFB_CHECK(dispdata->

layer->SetCooperativeLevel(dispdata->layer,

DLSCL_SHARED));

}

SDL_DFB_RELEASE(dispdata->layer);

SDL_DFB_RELEASE(dispdata->vidlayer);

}

}

/* vi: set ts=4 sw=4 expandtab: */