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#include <ddraw.h>
namespace ruby {
class pVideoDD {
public:
LPDIRECTDRAW lpdd;
LPDIRECTDRAW7 lpdd7;
LPDIRECTDRAWSURFACE7 screen, raster;
LPDIRECTDRAWCLIPPER clipper;
DDSURFACEDESC2 ddsd;
DDSCAPS2 ddscaps;
unsigned iwidth, iheight;
struct {
HWND handle;
bool synchronize;
unsigned width;
unsigned height;
} settings;
bool cap(const string& name) {
if(name == Video::Handle) return true;
if(name == Video::Synchronize) return true;
return false;
}
any get(const string& name) {
if(name == Video::Handle) return (uintptr_t)settings.handle;
if(name == Video::Synchronize) return settings.synchronize;
return false;
}
bool set(const string& name, const any& value) {
if(name == Video::Handle) {
settings.handle = (HWND)any_cast<uintptr_t>(value);
return true;
}
if(name == Video::Synchronize) {
settings.synchronize = any_cast<bool>(value);
return true;
}
return false;
}
void resize(unsigned width, unsigned height) {
if(iwidth >= width && iheight >= height) return;
iwidth = max(width, iwidth);
iheight = max(height, iheight);
if(raster) raster->Release();
screen->GetSurfaceDesc(&ddsd);
int depth = ddsd.ddpfPixelFormat.dwRGBBitCount;
if(depth == 32) goto try_native_surface;
memset(&ddsd, 0, sizeof(DDSURFACEDESC2));
ddsd.dwSize = sizeof(DDSURFACEDESC2);
ddsd.dwFlags = DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT | DDSD_PIXELFORMAT;
ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_VIDEOMEMORY; //DDSCAPS_SYSTEMMEMORY
ddsd.dwWidth = iwidth;
ddsd.dwHeight = iheight;
ddsd.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
ddsd.ddpfPixelFormat.dwFlags = DDPF_RGB;
ddsd.ddpfPixelFormat.dwRGBBitCount = 32;
ddsd.ddpfPixelFormat.dwRBitMask = 0xff0000;
ddsd.ddpfPixelFormat.dwGBitMask = 0x00ff00;
ddsd.ddpfPixelFormat.dwBBitMask = 0x0000ff;
if(lpdd7->CreateSurface(&ddsd, &raster, 0) == DD_OK) return clear();
try_native_surface:
memset(&ddsd, 0, sizeof(DDSURFACEDESC2));
ddsd.dwSize = sizeof(DDSURFACEDESC2);
ddsd.dwFlags = DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT;
ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_VIDEOMEMORY; //DDSCAPS_SYSTEMMEMORY
ddsd.dwWidth = iwidth;
ddsd.dwHeight = iheight;
if(lpdd7->CreateSurface(&ddsd, &raster, 0) == DD_OK) return clear();
}
void clear() {
DDBLTFX fx;
fx.dwSize = sizeof(DDBLTFX);
fx.dwFillColor = 0x00000000;
screen->Blt(0, 0, 0, DDBLT_WAIT | DDBLT_COLORFILL, &fx);
raster->Blt(0, 0, 0, DDBLT_WAIT | DDBLT_COLORFILL, &fx);
}
bool lock(uint32_t*& data, unsigned& pitch, unsigned width, unsigned height) {
if(width != settings.width || height != settings.height) {
resize(settings.width = width, settings.height = height);
}
if(raster->Lock(0, &ddsd, DDLOCK_WAIT, 0) != DD_OK) {
raster->Restore();
if(raster->Lock(0, &ddsd, DDLOCK_WAIT, 0) != DD_OK) return false;
}
pitch = ddsd.lPitch;
return data = (uint32_t*)ddsd.lpSurface;
}
void unlock() {
raster->Unlock(0);
}
void refresh() {
if(settings.synchronize) {
while(true) {
BOOL in_vblank;
lpdd7->GetVerticalBlankStatus(&in_vblank);
if(in_vblank == true) break;
}
}
HRESULT hr;
RECT rd, rs;
SetRect(&rs, 0, 0, settings.width, settings.height);
POINT p = {0, 0};
ClientToScreen(settings.handle, &p);
GetClientRect(settings.handle, &rd);
OffsetRect(&rd, p.x, p.y);
if(screen->Blt(&rd, raster, &rs, DDBLT_WAIT, 0) == DDERR_SURFACELOST) {
screen->Restore();
raster->Restore();
}
}
bool init() {
term();
DirectDrawCreate(0, &lpdd, 0);
lpdd->QueryInterface(IID_IDirectDraw7, (void**)&lpdd7);
if(lpdd) { lpdd->Release(); lpdd = 0; }
lpdd7->SetCooperativeLevel(settings.handle, DDSCL_NORMAL);
memset(&ddsd, 0, sizeof(DDSURFACEDESC2));
ddsd.dwSize = sizeof(DDSURFACEDESC2);
ddsd.dwFlags = DDSD_CAPS;
ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
lpdd7->CreateSurface(&ddsd, &screen, 0);
lpdd7->CreateClipper(0, &clipper, 0);
clipper->SetHWnd(0, settings.handle);
screen->SetClipper(clipper);
raster = 0;
iwidth = 0;
iheight = 0;
resize(settings.width = 256, settings.height = 256);
return true;
}
void term() {
if(clipper) { clipper->Release(); clipper = 0; }
if(raster) { raster->Release(); raster = 0; }
if(screen) { screen->Release(); screen = 0; }
if(lpdd7) { lpdd7->Release(); lpdd7 = 0; }
if(lpdd) { lpdd->Release(); lpdd = 0; }
}
pVideoDD() {
lpdd = 0;
lpdd7 = 0;
screen = 0;
raster = 0;
clipper = 0;
settings.handle = 0;
}
};
DeclareVideo(DD)
};
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