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author | vanfanel | 2015-01-27 17:58:08 +0100 |
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committer | vanfanel | 2015-03-29 21:52:53 +0200 |
commit | 08a3376ba7bdcd262131eafa5ae5e4e8a4ecf18d (patch) | |
tree | 4192497ebe80372c18c192222e3e88f8019eb84e /backends/graphics/dispmanxsdl/dispmanxsdl-graphics.cpp | |
parent | 79b92fe04698d3336f1d5232d4701133ff3ac10c (diff) | |
download | scummvm-rg350-08a3376ba7bdcd262131eafa5ae5e4e8a4ecf18d.tar.gz scummvm-rg350-08a3376ba7bdcd262131eafa5ae5e4e8a4ecf18d.tar.bz2 scummvm-rg350-08a3376ba7bdcd262131eafa5ae5e4e8a4ecf18d.zip |
RASPBERRYPI: Added Raspberry Pi native 2D API support (dispmanx)
Diffstat (limited to 'backends/graphics/dispmanxsdl/dispmanxsdl-graphics.cpp')
-rw-r--r-- | backends/graphics/dispmanxsdl/dispmanxsdl-graphics.cpp | 505 |
1 files changed, 505 insertions, 0 deletions
diff --git a/backends/graphics/dispmanxsdl/dispmanxsdl-graphics.cpp b/backends/graphics/dispmanxsdl/dispmanxsdl-graphics.cpp new file mode 100644 index 0000000000..03a10f1a0f --- /dev/null +++ b/backends/graphics/dispmanxsdl/dispmanxsdl-graphics.cpp @@ -0,0 +1,505 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +//Needed for Raspberry Pi header incussion +#define FORBIDDEN_SYMBOL_ALLOW_ALL + +#include "common/scummsys.h" + +#if defined(RASPBERRYPI) + +#include "backends/graphics/dispmanxsdl/dispmanxsdl-graphics.h" +#include "graphics/scaler/aspect.h" +#include "common/mutex.h" +#include "common/textconsole.h" + +#include <bcm_host.h> + +struct dispvarsStruct { + DISPMANX_DISPLAY_HANDLE_T display; + DISPMANX_MODEINFO_T amode; + DISPMANX_UPDATE_HANDLE_T update; + DISPMANX_RESOURCE_HANDLE_T resources[2]; + DISPMANX_ELEMENT_HANDLE_T element; + VC_IMAGE_TYPE_T pixFormat; + VC_DISPMANX_ALPHA_T *alpha; + VC_RECT_T srcRect; + VC_RECT_T dstRect; + VC_RECT_T bmpRect; + uint vcImagePtr; + uint screen; + uint pitch; + uint flipPage; + bool aspectRatioCorrection; + void *pixmem; +}; + +DispmanXSdlGraphicsManager::DispmanXSdlGraphicsManager(SdlEventSource *sdlEventSource) + : SurfaceSdlGraphicsManager(sdlEventSource) { + _dispvars = new dispvarsStruct; + DispmanXInit(); +} + +DispmanXSdlGraphicsManager::~DispmanXSdlGraphicsManager() +{ + DispmanXVideoQuit(); + delete _dispvars; +} + +void DispmanXSdlGraphicsManager::DispmanXInit () { + _dispvars->screen = 0; + _dispvars->flipPage = 0; + _dispvars->vcImagePtr = 0; + + // Before we call any vc_* function, we need to call this one. + bcm_host_init(); + + _dispvars->display = vc_dispmanx_display_open(_dispvars->screen); +} + +void DispmanXSdlGraphicsManager::DispmanXSetup (int width, int height, int bpp) { + DispmanXFreeResources(); + vc_dispmanx_display_get_info(_dispvars->display, &(_dispvars->amode)); + + _dispvars->pitch = width * (bpp/8); + _dispvars->pixFormat = VC_IMAGE_RGB565; + + // Transparency disabled + VC_DISPMANX_ALPHA_T layerAlpha; + layerAlpha.flags = DISPMANX_FLAGS_ALPHA_FIXED_ALL_PIXELS; + layerAlpha.opacity = 255; + layerAlpha.mask = 0; + _dispvars->alpha = &layerAlpha; + + if (_dispvars->aspectRatioCorrection) { + float orig_ratio = ((float)width / (float)height); + int dst_width = _dispvars->amode.height * orig_ratio; + + // If we obtain an scaled image width that is bigger than the physical screen width, + // then we keep the physical screen width as our maximun width. + if (dst_width > _dispvars->amode.width) + dst_width = _dispvars->amode.width; + int dst_ypos = (_dispvars->amode.width - dst_width) / 2; + vc_dispmanx_rect_set(&(_dispvars->dstRect), dst_ypos, 0, + dst_width, _dispvars->amode.height); + } else { + vc_dispmanx_rect_set(&(_dispvars->dstRect), 0, 0, + _dispvars->amode.width, _dispvars->amode.height); + } + + // We configure the rects now + vc_dispmanx_rect_set(&(_dispvars->bmpRect), 0, 0, width, height); + vc_dispmanx_rect_set(&(_dispvars->srcRect), 0, 0, width << 16, height << 16); + + // We create two resources for double buffering + _dispvars->resources[0] = vc_dispmanx_resource_create(_dispvars->pixFormat, width, height, + &(_dispvars->vcImagePtr)); + + _dispvars->resources[1] = vc_dispmanx_resource_create(_dispvars->pixFormat, width, height, + &(_dispvars->vcImagePtr)); + + // Add element + _dispvars->update = vc_dispmanx_update_start(0); + + _dispvars->element = vc_dispmanx_element_add(_dispvars->update, _dispvars->display, 0, + &(_dispvars->dstRect), _dispvars->resources[_dispvars->flipPage], &(_dispvars->srcRect), + DISPMANX_PROTECTION_NONE, _dispvars->alpha, 0, (DISPMANX_TRANSFORM_T)0); + + vc_dispmanx_update_submit_sync(_dispvars->update); +} + +void DispmanXSdlGraphicsManager::DispmanXUpdate() { + vc_dispmanx_resource_write_data(_dispvars->resources[_dispvars->flipPage], _dispvars->pixFormat, + _dispvars->pitch, _dispvars->pixmem, &(_dispvars->bmpRect)); + + // Update starts + _dispvars->update = vc_dispmanx_update_start(0); + + vc_dispmanx_element_change_source(_dispvars->update, _dispvars->element, + _dispvars->resources[_dispvars->flipPage]); + + vc_dispmanx_update_submit_sync(_dispvars->update); + // Update ends + + _dispvars->flipPage = !_dispvars->flipPage; + return; +} + +void DispmanXSdlGraphicsManager::DispmanXFreeResources(void) { + _dispvars->update = vc_dispmanx_update_start(0); + + vc_dispmanx_resource_delete(_dispvars->resources[0]); + vc_dispmanx_resource_delete(_dispvars->resources[1]); + vc_dispmanx_element_remove(_dispvars->update, _dispvars->element); + + vc_dispmanx_update_submit_sync(_dispvars->update); +} + +void DispmanXSdlGraphicsManager::DispmanXVideoQuit() { + DispmanXFreeResources(); + vc_dispmanx_display_close(_dispvars->display); + bcm_host_deinit(); +} + +bool DispmanXSdlGraphicsManager::loadGFXMode() { + _forceFull = true; + + // In DispmanX, we manage aspect ratio correction, so for scummvm it's always disabled. + _videoMode.aspectRatioCorrection = false; + + _videoMode.overlayWidth = _videoMode.screenWidth * _videoMode.scaleFactor; + _videoMode.overlayHeight = _videoMode.screenHeight * _videoMode.scaleFactor; + _videoMode.hardwareWidth = _videoMode.screenWidth * _videoMode.scaleFactor; + _videoMode.hardwareHeight = _videoMode.screenHeight * _videoMode.scaleFactor; + + // + // Create the surface that contains the 8 bit game data + // +#ifdef USE_RGB_COLOR + _screen = SDL_CreateRGBSurface(SDL_SWSURFACE, _videoMode.screenWidth, _videoMode.screenHeight, + _screenFormat.bytesPerPixel << 3, + ((1 << _screenFormat.rBits()) - 1) << _screenFormat.rShift , + ((1 << _screenFormat.gBits()) - 1) << _screenFormat.gShift , + ((1 << _screenFormat.bBits()) - 1) << _screenFormat.bShift , + ((1 << _screenFormat.aBits()) - 1) << _screenFormat.aShift ); + if (_screen == NULL) + error("allocating _screen failed"); + + // Avoid having SDL_SRCALPHA set even if we supplied an alpha-channel in the format. + SDL_SetAlpha(_screen, 0, 255); +#else + _screen = SDL_CreateRGBSurface(SDL_SWSURFACE, _videoMode.screenWidth, _videoMode.screenHeight, 8, 0, 0, 0, 0); + if (_screen == NULL) + error("allocating _screen failed"); +#endif + + // SDL 1.2 palettes default to all black, + // SDL 1.3 palettes default to all white, + // Thus set our own default palette to all black. + // SDL_SetColors does nothing for non indexed surfaces. + SDL_SetColors(_screen, _currentPalette, 0, 256); + + // + // Create the surface that contains the scaled graphics in 16 bit mode + // + + // We call DispmanXSetup() before SDL_SetVideoMode() because we use _hwscreen == null + // to know inside DispmanXSetup() if we've been there before and need to free resources. + DispmanXSetup(_videoMode.screenWidth, _videoMode.screenHeight, 16); + // _hwscreen = SDL_SetVideoMode(_videoMode.hardwareWidth, _videoMode.hardwareHeight, 16, SDL_FULLSCREEN); + _hwscreen = SDL_CreateRGBSurface(SDL_SWSURFACE, _videoMode.hardwareWidth, _videoMode.hardwareHeight, 16, + 0, 0, 0, 0); + + _dispvars->pixmem = _hwscreen->pixels; + + // We draw on a RAM surface, but we make this call just to get SDL input initialized. + // Even if we don't use the returned SDL_Surface *, we still need to use the right dimensions + // for mouse pointer adjustment to work correctly. + SDL_SetVideoMode(_videoMode.screenWidth, _videoMode.screenHeight, 16, SDL_FULLSCREEN); + +#ifdef USE_RGB_COLOR + detectSupportedFormats(); +#endif + + if (_hwscreen == NULL) { + // DON'T use error(), as this tries to bring up the debug + // console, which WON'T WORK now that _hwscreen is hosed. + + if (!_oldVideoMode.setup) { + warning("SDL_SetVideoMode says we can't switch to that mode (%s)", SDL_GetError()); + g_system->quit(); + } else { + return false; + } + } + + // + // Create the surface used for the graphics in 16 bit before scaling, and also the overlay + // + + // Need some extra bytes around when using 2xSaI + _tmpscreen = SDL_CreateRGBSurface(SDL_SWSURFACE, _videoMode.screenWidth + 3, _videoMode.screenHeight + 3, + 16, + _hwscreen->format->Rmask, + _hwscreen->format->Gmask, + _hwscreen->format->Bmask, + _hwscreen->format->Amask); + + if (_tmpscreen == NULL) + error("allocating _tmpscreen failed"); + + _overlayscreen = SDL_CreateRGBSurface(SDL_SWSURFACE, _videoMode.overlayWidth, _videoMode.overlayHeight, + 16, + _hwscreen->format->Rmask, + _hwscreen->format->Gmask, + _hwscreen->format->Bmask, + _hwscreen->format->Amask); + + if (_overlayscreen == NULL) + error("allocating _overlayscreen failed"); + + _overlayFormat.bytesPerPixel = _overlayscreen->format->BytesPerPixel; + + _overlayFormat.rLoss = _overlayscreen->format->Rloss; + _overlayFormat.gLoss = _overlayscreen->format->Gloss; + _overlayFormat.bLoss = _overlayscreen->format->Bloss; + _overlayFormat.aLoss = _overlayscreen->format->Aloss; + + _overlayFormat.rShift = _overlayscreen->format->Rshift; + _overlayFormat.gShift = _overlayscreen->format->Gshift; + _overlayFormat.bShift = _overlayscreen->format->Bshift; + _overlayFormat.aShift = _overlayscreen->format->Ashift; + + _tmpscreen2 = SDL_CreateRGBSurface(SDL_SWSURFACE, _videoMode.overlayWidth + 3, _videoMode.overlayHeight + 3, + 16, + _hwscreen->format->Rmask, + _hwscreen->format->Gmask, + _hwscreen->format->Bmask, + _hwscreen->format->Amask); + + if (_tmpscreen2 == NULL) + error("allocating _tmpscreen2 failed"); + +#ifdef USE_OSD + _osdSurface = SDL_CreateRGBSurface(SDL_SWSURFACE | SDL_RLEACCEL | SDL_SRCCOLORKEY | SDL_SRCALPHA, + _hwscreen->w, + _hwscreen->h, + 16, + _hwscreen->format->Rmask, + _hwscreen->format->Gmask, + _hwscreen->format->Bmask, + _hwscreen->format->Amask); + if (_osdSurface == NULL) + error("allocating _osdSurface failed"); + SDL_SetColorKey(_osdSurface, SDL_RLEACCEL | SDL_SRCCOLORKEY | SDL_SRCALPHA, kOSDColorKey); +#endif + + _eventSource->resetKeyboadEmulation( + _videoMode.screenWidth * _videoMode.scaleFactor - 1, + effectiveScreenHeight() - 1); + + // Distinguish 555 and 565 mode + if (_hwscreen->format->Rmask == 0x7C00) + InitScalers(555); + else + InitScalers(565); + + return true; +} + +void DispmanXSdlGraphicsManager::internUpdateScreen() { + SDL_Surface *srcSurf, *origSurf; + int height, width; + ScalerProc *scalerProc; + int scale1; + + // If the shake position changed, fill the dirty area with blackness + if (_currentShakePos != _newShakePos || + (_mouseNeedsRedraw && _mouseBackup.y <= _currentShakePos)) { + SDL_Rect blackrect = {0, 0, (Uint16)(_videoMode.screenWidth * _videoMode.scaleFactor), (Uint16)(_newShakePos * _videoMode.scaleFactor)}; + + SDL_FillRect(_hwscreen, &blackrect, 0); + + _currentShakePos = _newShakePos; + + _forceFull = true; + } + + // Check whether the palette was changed in the meantime and update the + // screen surface accordingly. + if (_screen && _paletteDirtyEnd != 0) { + SDL_SetColors(_screen, _currentPalette + _paletteDirtyStart, + _paletteDirtyStart, + _paletteDirtyEnd - _paletteDirtyStart); + + _paletteDirtyEnd = 0; + + _forceFull = true; + } + +#ifdef USE_OSD + // OSD visible (i.e. non-transparent)? + if (_osdAlpha != SDL_ALPHA_TRANSPARENT) { + // Updated alpha value + const int diff = SDL_GetTicks() - _osdFadeStartTime; + if (diff > 0) { + if (diff >= kOSDFadeOutDuration) { + // Back to full transparency + _osdAlpha = SDL_ALPHA_TRANSPARENT; + } else { + // Do a linear fade out... + const int startAlpha = SDL_ALPHA_TRANSPARENT + kOSDInitialAlpha * (SDL_ALPHA_OPAQUE - SDL_ALPHA_TRANSPARENT) / 100; + _osdAlpha = startAlpha + diff * (SDL_ALPHA_TRANSPARENT - startAlpha) / kOSDFadeOutDuration; + } + SDL_SetAlpha(_osdSurface, SDL_RLEACCEL | SDL_SRCCOLORKEY | SDL_SRCALPHA, _osdAlpha); + _forceFull = true; + } + } +#endif + + if (!_overlayVisible) { + origSurf = _screen; + srcSurf = _tmpscreen; + width = _videoMode.screenWidth; + height = _videoMode.screenHeight; + scalerProc = _scalerProc; + scale1 = _videoMode.scaleFactor; + } else { + origSurf = _overlayscreen; + srcSurf = _tmpscreen2; + width = _videoMode.overlayWidth; + height = _videoMode.overlayHeight; + scalerProc = Normal1x; + + scale1 = 1; + } + + // Add the area covered by the mouse cursor to the list of dirty rects if + // we have to redraw the mouse. + if (_mouseNeedsRedraw) + undrawMouse(); + + // Force a full redraw if requested + if (_forceFull) { + _numDirtyRects = 1; + _dirtyRectList[0].x = 0; + _dirtyRectList[0].y = 0; + _dirtyRectList[0].w = width; + _dirtyRectList[0].h = height; + } + + // Only draw anything if necessary + if (_numDirtyRects > 0 || _mouseNeedsRedraw) { + SDL_Rect *r; + SDL_Rect dst; + uint32 srcPitch, dstPitch; + SDL_Rect *lastRect = _dirtyRectList + _numDirtyRects; + + for (r = _dirtyRectList; r != lastRect; ++r) { + dst = *r; + dst.x++; // Shift rect by one since 2xSai needs to access the data around + dst.y++; // any pixel to scale it, and we want to avoid mem access crashes. + + if (SDL_BlitSurface(origSurf, r, srcSurf, &dst) != 0) + error("SDL_BlitSurface failed: %s", SDL_GetError()); + } + + SDL_LockSurface(srcSurf); + SDL_LockSurface(_hwscreen); + + srcPitch = srcSurf->pitch; + dstPitch = _hwscreen->pitch; + + for (r = _dirtyRectList; r != lastRect; ++r) { + register int dst_y = r->y + _currentShakePos; + register int dst_h = 0; + register int rx1 = r->x * scale1; + + if (dst_y < height) { + dst_h = r->h; + if (dst_h > height - dst_y) + dst_h = height - dst_y; + + dst_y = dst_y * scale1; + + assert(scalerProc != NULL); + scalerProc((byte *)srcSurf->pixels + (r->x * 2 + 2) + (r->y + 1) * srcPitch, srcPitch, + (byte *)_hwscreen->pixels + rx1 * 2 + dst_y * dstPitch, dstPitch, r->w, dst_h); + } + + r->x = rx1; + r->y = dst_y; + r->w = r->w * scale1; + r->h = dst_h * scale1; + + } + SDL_UnlockSurface(srcSurf); + SDL_UnlockSurface(_hwscreen); + + // Readjust the dirty rect list in case we are doing a full update. + // This is necessary if shaking is active. + if (_forceFull) { + _dirtyRectList[0].y = 0; + _dirtyRectList[0].h = effectiveScreenHeight(); + } + + drawMouse(); + +#ifdef USE_OSD + if (_osdAlpha != SDL_ALPHA_TRANSPARENT) { + SDL_BlitSurface(_osdSurface, 0, _hwscreen, 0); + } +#endif + // Finally, blit all our changes to the screen + if (!_displayDisabled) { + SDL_UpdateRects(_hwscreen, _numDirtyRects, _dirtyRectList); + DispmanXUpdate(); + } + } + + _numDirtyRects = 0; + _forceFull = false; + _mouseNeedsRedraw = false; +} + +bool DispmanXSdlGraphicsManager::handleScalerHotkeys(Common::KeyCode key) { + + // Ctrl-Alt-a toggles aspect ratio correction + if (key == 'a') { + beginGFXTransaction(); + setFeatureState(OSystem::kFeatureAspectRatioCorrection, !_dispvars->aspectRatioCorrection); + endGFXTransaction(); +#ifdef USE_OSD + char buffer[128]; + if (_dispvars->aspectRatioCorrection) + sprintf(buffer, "%s", ("Enabled aspect ratio correction")); + else + sprintf(buffer, "%s", ("Disabled aspect ratio correction")); + displayMessageOnOSD(buffer); +#endif + internUpdateScreen(); + return true; + } + + return true; +} + +void DispmanXSdlGraphicsManager::setFullscreenMode(bool enable) { + _videoMode.fullscreen = enable; + return; +} + +void DispmanXSdlGraphicsManager::setAspectRatioCorrection(bool enable) { + Common::StackLock lock(_graphicsMutex); + // Ratio correction is managed externally by dispmanx, so we disable it at the SDL level but take note, + // so it's effectively taken into account at the dispmanx level in DispmanXSetup(). + if (_oldVideoMode.setup && _dispvars->aspectRatioCorrection == enable) + return; + + if (_transactionMode == kTransactionActive) { + _dispvars->aspectRatioCorrection = enable; + _transactionDetails.needHotswap = false; + DispmanXSetup(_videoMode.screenWidth, _videoMode.screenHeight, 16); + } +} + +#endif |