This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_DirectFB_modes.c
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Simple DirectMedia Layer
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
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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.
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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:
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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.
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*/
#include "SDL_DirectFB_video.h"
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#include "SDL_DirectFB_modes.h"
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#define DFB_MAX_MODES 200
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struct screen_callback_t
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{
int numscreens;
DFBScreenID screenid[DFB_MAX_SCREENS];
DFBDisplayLayerID gralayer[DFB_MAX_SCREENS];
DFBDisplayLayerID vidlayer[DFB_MAX_SCREENS];
int aux; /* auxiliary integer for callbacks */
};
struct modes_callback_t
{
int nummodes;
SDL_DisplayMode *modelist;
};
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
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EnumScreensCallback(DFBScreenID screen_id, DFBScreenDescription desc,
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void *callbackdata)
{
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struct screen_callback_t *devdata = (struct screen_callback_t *) callbackdata;
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devdata->screenid[devdata->numscreens++] = screen_id;
return DFENUM_OK;
}
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static DFBEnumerationResult
EnumLayersCallback(DFBDisplayLayerID layer_id, DFBDisplayLayerDescription desc,
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void *callbackdata)
{
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struct screen_callback_t *devdata = (struct screen_callback_t *) callbackdata;
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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
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CheckSetDisplayMode(_THIS, SDL_VideoDisplay * display, DFB_DisplayData * data, SDL_DisplayMode * mode)
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{
SDL_DFB_DEVICEDATA(_this);
DFBDisplayLayerConfig config;
DFBDisplayLayerConfigFlags failed;
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SDL_DFB_CHECKERR(data->layer->SetCooperativeLevel(data->layer,
DLSCL_ADMINISTRATIVE));
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config.width = mode->w;
config.height = mode->h;
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config.pixelformat = DirectFB_SDLToDFBPixelFormat(mode->format);
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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);
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SDL_DFB_CHECKERR(data->layer->SetCooperativeLevel(data->layer,
DLSCL_SHARED));
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if (failed == 0)
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SDL_AddDisplayMode(display, mode);
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SDL_DFB_LOG("Mode %d x %d Added\n", mode->w, mode->h);
}
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SDL_DFB_ERR("Mode %d x %d not available: %x\n", mode->w,
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mode->h, failed);
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return;
error:
return;
}
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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.
*/
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SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
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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
}
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void
DirectFB_InitModes(_THIS)
{
SDL_DFB_DEVICEDATA(_this);
IDirectFBDisplayLayer *layer = NULL;
SDL_VideoDisplay display;
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DFB_DisplayData *dispdata = NULL;
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SDL_DisplayMode mode;
DFBGraphicsDeviceDescription caps;
DFBDisplayLayerConfig dlc;
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struct screen_callback_t *screencbdata;
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int tcw[DFB_MAX_SCREENS];
int tch[DFB_MAX_SCREENS];
int i;
DFBResult ret;
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SDL_DFB_ALLOC_CLEAR(screencbdata, sizeof(*screencbdata));
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screencbdata->numscreens = 0;
for (i = 0; i < DFB_MAX_SCREENS; i++) {
screencbdata->gralayer[i] = -1;
screencbdata->vidlayer[i] = -1;
}
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SDL_DFB_CHECKERR(devdata->dfb->EnumScreens(devdata->dfb, &EnumScreensCallback,
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screencbdata));
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for (i = 0; i < screencbdata->numscreens; i++) {
IDirectFBScreen *screen;
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SDL_DFB_CHECKERR(devdata->dfb->GetScreen(devdata->dfb,
screencbdata->screenid
[i], &screen));
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screencbdata->aux = i;
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SDL_DFB_CHECKERR(screen->EnumDisplayLayers(screen, &EnumLayersCallback,
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screencbdata));
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screen->GetSize(screen, &tcw[i], &tch[i]);
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screen->Release(screen);
}
/* Query card capabilities */
devdata->dfb->GetDeviceDescription(devdata->dfb, &caps);
for (i = 0; i < screencbdata->numscreens; i++) {
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SDL_DFB_CHECKERR(devdata->dfb->GetDisplayLayer(devdata->dfb,
screencbdata->gralayer
[i], &layer));
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SDL_DFB_CHECKERR(layer->SetCooperativeLevel(layer,
DLSCL_ADMINISTRATIVE));
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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;
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ret = layer->SetConfiguration(layer, &dlc);
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if (ret != DFB_OK) {
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/* try AiRGB if the previous failed */
dlc.pixelformat = DSPF_AiRGB;
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SDL_DFB_CHECKERR(layer->SetConfiguration(layer, &dlc));
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}
}
/* Query layer configuration to determine the current mode and pixelformat */
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dlc.flags = DLCONF_ALL;
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SDL_DFB_CHECKERR(layer->GetConfiguration(layer, &dlc));
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mode.format = DirectFB_DFBToSDLPixelFormat(dlc.pixelformat);
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if (mode.format == SDL_PIXELFORMAT_UNKNOWN) {
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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;
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SDL_DFB_ALLOC_CLEAR(dispdata, sizeof(*dispdata));
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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;
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#if (DFB_VERSION_ATLEAST(1,2,0))
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dlc.flags =
DLCONF_WIDTH | DLCONF_HEIGHT | DLCONF_PIXELFORMAT |
DLCONF_OPTIONS;
ret = layer->SetConfiguration(layer, &dlc);
#endif
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SDL_DFB_CHECKERR(layer->SetCooperativeLevel(layer, DLSCL_SHARED));
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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
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DirectFB_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
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{
SDL_DFB_DEVICEDATA(_this);
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DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;
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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));
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SDL_DFB_CHECKERR(devdata->dfb->EnumVideoModes(devdata->dfb,
EnumModesCallback, &data));
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for (i = 0; i < data.nummodes; ++i) {
mode = data.modelist[i];
mode.format = SDL_PIXELFORMAT_ARGB8888;
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CheckSetDisplayMode(_this, display, dispdata, &mode);
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mode.format = SDL_PIXELFORMAT_RGB888;
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CheckSetDisplayMode(_this, display, dispdata, &mode);
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mode.format = SDL_PIXELFORMAT_RGB24;
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CheckSetDisplayMode(_this, display, dispdata, &mode);
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mode.format = SDL_PIXELFORMAT_RGB565;
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CheckSetDisplayMode(_this, display, dispdata, &mode);
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mode.format = SDL_PIXELFORMAT_INDEX8;
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CheckSetDisplayMode(_this, display, dispdata, &mode);
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SDL_DFB_FREE(data.modelist);
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error:
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return;
}
int
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DirectFB_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
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{
/*
* FIXME: video mode switch is currently broken for 1.2.0
*
*/
SDL_DFB_DEVICEDATA(_this);
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DFB_DisplayData *data = (DFB_DisplayData *) display->driverdata;
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DFBDisplayLayerConfig config, rconfig;
DFBDisplayLayerConfigFlags fail = 0;
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SDL_DFB_CHECKERR(data->layer->SetCooperativeLevel(data->layer,
DLSCL_ADMINISTRATIVE));
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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;
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config.pixelformat = DirectFB_SDLToDFBPixelFormat(mode->format);
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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 &
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(DLCONF_WIDTH | DLCONF_HEIGHT | DLCONF_PIXELFORMAT |
DLCONF_OPTIONS)) {
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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));
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#if (DFB_VERSION_ATLEAST(1,2,0))
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/* Need to call this twice ! */
SDL_DFB_CHECKERR(data->layer->SetConfiguration(data->layer, &config));
#endif
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/* Double check */
SDL_DFB_CHECKERR(data->layer->GetConfiguration(data->layer, &rconfig));
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SDL_DFB_CHECKERR(data->
layer->SetCooperativeLevel(data->layer, DLSCL_SHARED));
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if ((config.width != rconfig.width) || (config.height != rconfig.height)
|| ((mode->format != SDL_PIXELFORMAT_UNKNOWN)
&& (config.pixelformat != rconfig.pixelformat))) {
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SDL_DFB_ERR("Error setting mode %dx%d-%x\n", mode->w, mode->h,
mode->format);
return -1;
}
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data->pixelformat = rconfig.pixelformat;
data->cw = config.width;
data->ch = config.height;
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display->current_mode = *mode;
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return 0;
error:
return -1;
}
void
DirectFB_QuitModes(_THIS)
{
SDL_DisplayMode tmode;
int i;
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for (i = 0; i < _this->num_displays; ++i) {
SDL_VideoDisplay *display = &_this->displays[i];
DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;
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SDL_GetDesktopDisplayMode(i, &tmode);
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tmode.format = SDL_PIXELFORMAT_UNKNOWN;
DirectFB_SetDisplayMode(_this, display, &tmode);
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SDL_GetDesktopDisplayMode(i, &tmode);
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DirectFB_SetDisplayMode(_this, display, &tmode);
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if (dispdata->layer) {
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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));
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}
SDL_DFB_RELEASE(dispdata->layer);
SDL_DFB_RELEASE(dispdata->vidlayer);
}
}
/* vi: set ts=4 sw=4 expandtab: */