static boolean Overlay( LPDIRECTDRAWSURFACE src_surface, RECT * src_rect,
LPDIRECTDRAWSURFACE dst_surface, RECT * dst_rect,
COLORREF color_key )
{
DWORD dw_color_key;
DDPIXELFORMAT ddpf;
DDOVERLAYFX ddofx;
int flags;
HRESULT result;
/* compute the colorkey pixel value from the RGB value we've got/
* NOTE : based on videolan colorkey code */
memset( &ddpf, 0, sizeof( DDPIXELFORMAT ));
ddpf.dwSize = sizeof( DDPIXELFORMAT );
result = IDirectDrawSurface_GetPixelFormat( dst_surface, &ddpf );
if( result != DD_OK )
{
Error( 0, "IDirectDrawSurface_GetPixelFormat : could not get surface pixel format" );
return FALSE;
}
dw_color_key = ( DWORD ) color_key;
dw_color_key = ( DWORD ) ( ( ( dw_color_key * ddpf.dwRBitMask ) / 255 ) & ddpf.dwRBitMask );
memset( &ddofx, 0, sizeof( DDOVERLAYFX ) );
ddofx.dwSize = sizeof( DDOVERLAYFX );
ddofx.dckDestColorkey.dwColorSpaceLowValue = dw_color_key;
ddofx.dckDestColorkey.dwColorSpaceHighValue = dw_color_key;
/* set our overlay flags */
flags = DDOVER_SHOW | DDOVER_KEYDESTOVERRIDE;
/* attempt to overlay the surface */
result = IDirectDrawSurface_UpdateOverlay( src_surface, src_rect, dst_surface, dst_rect, flags, &ddofx );
if( result != DD_OK )
{
if( result == DDERR_SURFACELOST )
{
IDirectDrawSurface_Restore( src_surface );
IDirectDrawSurface_Restore( dst_surface );
IDirectDrawSurface_UpdateOverlay( src_surface, src_rect, dst_surface, dst_rect, flags, &ddofx );
}
else
{
Error( 0, "IDirectDrawSurface_UpdateOverlay : error 0x%lx. You can try disable hardware acceleration (option video.directx.hwaccel).", result );
return FALSE;
}
}
return TRUE;
}
Err GE2DHideOverlay()
{
if (Thread)
{
ThreadRun = 0;
if (Thread && WaitForSingleObject(Thread,5000) == WAIT_TIMEOUT)
TerminateThread(Thread,0);
Thread = NULL;
}
if (DDBuffer)
{
IDirectDrawSurface_UpdateOverlay(DDBuffer,&DDSrc,DDPrimary,&DDDst,DDOVER_HIDE,NULL);
IDirectDrawSurface_Release(DDBuffer);
DDBuffer = NULL;
}
return 0;
}
static void DDUpdate(GE2DBitmapType *p)
{
HWND Wnd = FindWindow("PalmOSEmulatorDisplay",NULL);
POINT Origin = {0,0};
if (Wnd)
ClientToScreen(Wnd,&Origin);
DDSrc.left = 0;
DDSrc.top = 0;
DDSrc.right = p->width;
DDSrc.bottom = p->height;
if (DDDst.left != DDLeft + Origin.x ||
DDDst.top != DDTop + Origin.y)
{
DDDst.left = DDLeft + Origin.x;
DDDst.top = DDTop + Origin.y;
DDDst.right = DDDst.left + p->width;
DDDst.bottom = DDDst.top + p->height;
IDirectDrawSurface_UpdateOverlay(DDBuffer,&DDSrc,DDPrimary,&DDDst,DDOVER_SHOW,NULL);
}
}
static int DxManageOverlay(void)
{
HRESULT ddrval;
DDOVERLAYFX ovfx;
DWORD dwUpdateFlags = 0;
int width, height;
/* --------- fix to limit -------------- */
rs.left = 0;
rs.top = 0;
rs.right = rs.left + g_image_width;
rs.bottom = rs.top + g_image_height;
if (g_align_src) {
rs.right -= rs.right % g_align_src;
}
if (g_inited) {
RECT cur;
GetWindowRect(g_hwnd, &cur);
if (cur.left != rd.left || cur.top != rd.top) {
rd.left = cur.left;
rd.top = cur.top;
rd.right = cur.right;
rd.bottom = cur.bottom;
} else {
rd.left = dx;
rd.top = dy;
rd.right = rd.left + dw;
rd.bottom = rd.top + dh;
}
} else {
rd.left = dx;
rd.top = dy;
rd.right = rd.left + dw;
rd.bottom = rd.top + dh;
}
if (g_StretchFactor1000 > 1000) {
rd.right = (rd.right * g_StretchFactor1000 + 999) / 1000;
rd.bottom = rd.bottom * g_StretchFactor1000 / 1000;
}
if (g_align_dst) {
rd.right = ((rd.right + g_align_dst - 1) / g_align_dst) * g_align_dst;
}
width = rd.right - rd.left;
height = rd.bottom - rd.top;
/*do not allow to zoom or shrink if hardware isn't able to do so */
if ((width < g_image_width) && !g_allow_shrink_x) {
rd.right = rd.left + g_image_width;
} else if ((width > g_image_width) && !g_allow_zoom_x) {
rd.right = rd.left + g_image_width;
}
if ((height < g_image_height) && !g_allow_shrink_y) {
rd.bottom = rd.top + g_image_height;
} else if ((height > g_image_height) && !g_allow_zoom_y) {
rd.bottom = rd.top + g_image_height;
}
SetWindowPos(g_hwnd, HWND_TOPMOST, rd.left, rd.top, rd.right - rd.left,
rd.bottom - rd.top, SWP_NOOWNERZORDER);
ShowWindow(g_hwnd, SW_SHOW);
/* --------- setup update flags --------- */
ZeroMemory(&ovfx, sizeof(ovfx));
ovfx.dwSize = sizeof(ovfx);
ovfx.dckDestColorkey.dwColorSpaceLowValue = 0;
ovfx.dckDestColorkey.dwColorSpaceHighValue = 0;
dwUpdateFlags = DDOVER_SHOW | DDOVER_DDFX;
if (g_overlay_key) {
dwUpdateFlags |= DDOVER_KEYDESTOVERRIDE;
}
ddrval = IDirectDrawSurface_UpdateOverlay(g_lpddsOverlay, &rs, g_lpddsPrimary,
&rd, dwUpdateFlags, &ovfx);
/*ok we can't do anything about it -> hide overlay */
if (ddrval != DD_OK) {
av_log(NULL, AV_LOG_ERROR, "update overlay faild , hide overlay\n");
IDirectDrawSurface_UpdateOverlay(g_lpddsOverlay, NULL, g_lpddsPrimary, NULL,
DDOVER_HIDE, NULL);
return FALSE;
}
return TRUE;
}
