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#include <windows.h>
#include <ddraw.h>
#include "dd.h"
#include "../Agave/Language/api_language.h"
#include "resource.h"
extern HINSTANCE visDll;
#pragma intrinsic(memset)
C_DD::C_DD()
{
g_lpDD=NULL;
cursurface=0;
g_ddp=NULL;
g_lpDDSPrim=NULL;
g_lpPrimSurfBack=NULL;
g_RenderSurface[0]=g_RenderSurface[1]=NULL;
g_RenderSurfaceLocked[0]=g_RenderSurfaceLocked[1]=NULL;
memset(g_palette_seek,0,sizeof(g_palette_seek));
memset(g_palette_orig,0,sizeof(g_palette_orig));
memset(g_palette_last,0,sizeof(g_palette_last));
g_pal_lastv=0;
g_palette_starttime=g_palette_endtime=0;
}
int C_DD::lock(unsigned char **input, unsigned char **output)
{
DDSURFACEDESC d={sizeof(d),};
if (g_RenderSurface[cursurface]->Lock(NULL,&d,DDLOCK_WAIT,NULL) != DD_OK)
{
g_RenderSurfaceLocked[cursurface]=0;
return 0;
}
*input=(unsigned char*)(g_RenderSurfaceLocked[cursurface]=d.lpSurface);
DDSURFACEDESC e={sizeof(e),};
if (g_RenderSurface[cursurface^1]->Lock(NULL,&e,DDLOCK_WAIT,NULL) != DD_OK)
{
g_RenderSurface[cursurface]->Unlock(g_RenderSurfaceLocked[cursurface]);
g_RenderSurfaceLocked[cursurface^1]=0;
g_RenderSurfaceLocked[cursurface]=0;
return 0;
}
*output=(unsigned char*)(g_RenderSurfaceLocked[cursurface^1]=e.lpSurface);
return 1;
}
int C_DD::palette_fadeleft()
{
return g_palette_endtime-GetTickCount();
}
void C_DD::unlock(void)
{
if (g_RenderSurfaceLocked[0])
{
g_RenderSurface[0]->Unlock(g_RenderSurfaceLocked[0]);
g_RenderSurface[1]->Unlock(g_RenderSurfaceLocked[1]);
if (g_palette_starttime)
{
PALETTEENTRY palette[256] = {0};
int x = 0;
int len=g_palette_endtime-g_palette_starttime;
int pos=GetTickCount()-g_palette_starttime;
int do_it=1;
if (pos >= len || !len)
{
g_palette_starttime=0;
g_pal_lastv=-128;
memcpy(g_palette_last,g_palette_seek,768);
}
else
{
int adj=(pos<<8)/len;
int poop=(255*adj)>>8;
if (poop != g_pal_lastv)
{
g_pal_lastv=poop;
for (x = 0; x < 768; x ++)
{
int c=(((int)g_palette_seek[x])*adj + ((int)g_palette_orig[x])*(255-adj))>>8;
if (c > 255) c = 255;
g_palette_last[x]=c;
}
}
else do_it=0;
}
if (do_it)
{
int y=0;
for (x = 0; x < 256; x ++)
{
palette[x].peRed=g_palette_last[y];
palette[x].peGreen=g_palette_last[y+1];
palette[x].peBlue=g_palette_last[y+2];
palette[x].peFlags = PC_NOCOLLAPSE;
y+=3;
}
g_ddp->SetEntries(0,0,256,palette);
}
}
if (g_lpPrimSurfBack)
{
if (g_lpPrimSurfBack->Blt(NULL,g_RenderSurface[cursurface^1],NULL,DDBLT_WAIT,NULL) == DDERR_SURFACELOST)
{
g_lpDDSPrim->Restore();
g_lpPrimSurfBack->Restore();
}
else
g_lpDDSPrim->Flip(NULL,DDFLIP_WAIT);
}
else
{
if (g_lpDDSPrim->Blt(NULL,g_RenderSurface[cursurface^1],NULL,DDBLT_WAIT,NULL) == DDERR_SURFACELOST)
{
g_lpDDSPrim->Restore();
}
else g_lpDD->WaitForVerticalBlank(DDWAITVB_BLOCKBEGIN,0);
}
g_RenderSurfaceLocked[0]=0;
g_RenderSurfaceLocked[1]=0;
cursurface^=1;
}
}
char *C_DD::open(int w, int h, HWND hwnd)
{
static char errbuf[128];
if (DirectDrawCreate(NULL,&g_lpDD,NULL) != DD_OK) return WASABI_API_LNGSTRING_BUF(IDS_DIRECTDRAWCREATE_FAILED,errbuf,128);
if (g_lpDD->SetCooperativeLevel(hwnd,DDSCL_EXCLUSIVE|DDSCL_FULLSCREEN) != DD_OK)
{
g_lpDD->Release();
return WASABI_API_LNGSTRING_BUF(IDS_COULD_NOT_SET_EXCLUSIVE_FULLSCREEN,errbuf,128);
}
if (g_lpDD->SetDisplayMode(w,h,8) != DD_OK)
{
g_lpDD->Release();
return WASABI_API_LNGSTRING_BUF(IDS_COULD_NOT_SET_DISPLAY_MODE,errbuf,128);
}
DDSURFACEDESC DDsd = {0};
DDsd.dwSize = sizeof(DDsd);
DDsd.dwFlags = DDSD_CAPS|DDSD_BACKBUFFERCOUNT;
DDsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE|DDSCAPS_COMPLEX|DDSCAPS_FLIP;
DDsd.dwBackBufferCount = 1;
if (g_lpDD->CreateSurface(&DDsd, &g_lpDDSPrim, NULL) != DD_OK)
{
g_lpPrimSurfBack=NULL;
DDsd.dwSize = sizeof(DDsd);
DDsd.dwFlags = DDSD_CAPS;
DDsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
if (g_lpDD->CreateSurface(&DDsd, &g_lpDDSPrim, NULL) != DD_OK)
{
g_lpDD->Release();
return WASABI_API_LNGSTRING_BUF(IDS_COULD_NOT_CREATE_PRIMARY_SURFACE,errbuf,128);
}
}
else
{
DDSCAPS ddscaps;
ddscaps.dwCaps = DDSCAPS_BACKBUFFER;
if (g_lpDDSPrim->GetAttachedSurface(&ddscaps, &g_lpPrimSurfBack) != DD_OK) // no page flipping
g_lpPrimSurfBack=NULL;
}
DDsd.dwFlags = DDSD_CAPS|DDSD_WIDTH|DDSD_HEIGHT|DDSD_PITCH|DDSD_PIXELFORMAT;
DDsd.dwWidth=w;
DDsd.dwHeight=h;
DDsd.lPitch=w;
DDsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN|DDSCAPS_SYSTEMMEMORY;
DDsd.ddpfPixelFormat.dwSize = sizeof(DDsd.ddpfPixelFormat);
DDsd.ddpfPixelFormat.dwFlags=DDPF_PALETTEINDEXED8|DDPF_RGB;
DDsd.ddpfPixelFormat.dwRGBBitCount = 8;
if (g_lpDD->CreateSurface(&DDsd, &g_RenderSurface[0], NULL) != DD_OK ||
g_lpDD->CreateSurface(&DDsd, &g_RenderSurface[1], NULL) != DD_OK)
{
g_lpDD->Release();
return WASABI_API_LNGSTRING_BUF(IDS_COULD_NOT_CREATE_RENDER_SURFACE,errbuf,128);
}
PALETTEENTRY palette[256] = {0};
for (int x = 0; x < 256; x ++)
{
palette[x].peRed=palette[x].peGreen=palette[x].peBlue=0;
palette[x].peFlags = PC_NOCOLLAPSE;
}
if (g_lpDD->CreatePalette(DDPCAPS_8BIT|DDPCAPS_ALLOW256,palette,&g_ddp,NULL) != DD_OK)
{
g_lpDD->Release();
return WASABI_API_LNGSTRING_BUF(IDS_COULD_NOT_CREATE_PALETTE,errbuf,128);
}
if (g_lpDDSPrim->SetPalette(g_ddp) != DD_OK)
{
g_lpDD->Release();
return WASABI_API_LNGSTRING_BUF(IDS_COULD_NOT_SET_PALETTE,errbuf,128);
}
g_pal_lastv=-128;
g_palette_starttime=0;
return 0;
}
void C_DD::setpalette(unsigned char palette[768], unsigned int time_ms)
{
memcpy(g_palette_seek,palette,768);
memcpy(g_palette_orig,g_palette_last,768);
g_palette_starttime=GetTickCount();
g_palette_endtime=g_palette_starttime+time_ms;
}
void C_DD::close(void)
{
if (g_lpDD) g_lpDD->Release();
g_lpDD=0;
cursurface=0;
g_ddp=NULL;
g_lpDDSPrim=NULL;
g_lpPrimSurfBack=NULL;
g_RenderSurface[0]=g_RenderSurface[1]=NULL;
g_RenderSurfaceLocked[0]=g_RenderSurfaceLocked[1]=NULL;
memset(g_palette_seek,0,sizeof(g_palette_seek));
memset(g_palette_orig,0,sizeof(g_palette_orig));
memset(g_palette_last,0,sizeof(g_palette_last));
g_pal_lastv=0;
g_palette_starttime=g_palette_endtime=0;
}
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