src/dfb/wrapdfb.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/dfb/wrapdfb.cpp
   3 // Purpose:     wx wrappers for DirectFB interfaces
   4 // Author:      Vaclav Slavik
   5 // Created:     2006-09-04
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2006 REA Elektronik GmbH
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // For compilers that support precompilation, includes "wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/intl.h"
  20     #include "wx/log.h"
  21 #endif
  22
  23 #include "wx/dfb/wrapdfb.h"
  24
  25 //-----------------------------------------------------------------------------
  26 // wxDfbCheckReturn
  27 //-----------------------------------------------------------------------------
  28
  29 bool wxDfbCheckReturn(DFBResult code)
  30 {
  31     switch ( code )
  32     {
  33         case DFB_OK:
  34             return true;
  35
  36         // these are programming errors, assert:
  37         #define DFB_ASSERT(code)                                        \
  38             case code:                                                  \
  39                 wxFAIL_MSG( "DirectFB error: " wxT(#code) );         \
  40                 return false                                            \
  41
  42         DFB_ASSERT(DFB_DEAD);
  43         DFB_ASSERT(DFB_UNSUPPORTED);
  44         DFB_ASSERT(DFB_UNIMPLEMENTED);
  45         DFB_ASSERT(DFB_INVARG);
  46         DFB_ASSERT(DFB_NOIMPL);
  47         DFB_ASSERT(DFB_MISSINGFONT);
  48         DFB_ASSERT(DFB_THIZNULL);
  49         DFB_ASSERT(DFB_INVAREA);
  50         DFB_ASSERT(DFB_DESTROYED);
  51         DFB_ASSERT(DFB_NOSUCHMETHOD);
  52         DFB_ASSERT(DFB_NOSUCHINSTANCE);
  53         DFB_ASSERT(DFB_VERSIONMISMATCH);
  54
  55         #undef  DFB_ASSERT
  56
  57         // these are not errors, but valid return codes:
  58         case DFB_INTERRUPTED:
  59         case DFB_BUFFEREMPTY:
  60             return true;
  61
  62         default:
  63             // FIXME: should handle the errors individually
  64             wxLogError(_("DirectFB error %d occured."), (int)code);
  65             return false;
  66     }
  67 }
  68
  69 //-----------------------------------------------------------------------------
  70 // wxDfbPtrBase
  71 //-----------------------------------------------------------------------------
  72
  73 /* static */
  74 void wxDfbPtrBase::DoAddRef(wxDfbWrapperBase *ptr)
  75 {
  76     ptr->AddRef();
  77 }
  78
  79 void wxDfbPtrBase::DoRelease(wxDfbWrapperBase *ptr)
  80 {
  81     ptr->Release();
  82 }
  83
  84 //-----------------------------------------------------------------------------
  85 // wxIDirectFB
  86 //-----------------------------------------------------------------------------
  87
  88 wxIDirectFBPtr wxIDirectFB::ms_ptr;
  89
  90 /* static */
  91 void wxIDirectFB::CreateDirectFB()
  92 {
  93     IDirectFB *dfb;
  94     if ( wxDfbCheckReturn(DirectFBCreate(&dfb)) )
  95         ms_ptr = new wxIDirectFB(dfb);
  96 }
  97
  98 /* static */
  99 void wxIDirectFB::CleanUp()
 100 {
 101     ms_ptr.Reset();
 102 }
 103
 104 wxIDirectFBSurfacePtr wxIDirectFB::GetPrimarySurface()
 105 {
 106     DFBSurfaceDescription desc;
 107     desc.flags = DSDESC_CAPS;
 108     // NB: see dcscreen.cpp for why we request double-buffered surface
 109     //
 110     //     This assumes the cooperative level is DFSCL_NORMAL (that's the
 111     //     default and wx doesn't modify it anywhere); if we ever support
 112     //     other cooperative levels, DSCAPS_DOUBLE should *not* be used with
 113     //     them.
 114     desc.caps = DFBSurfaceCapabilities(DSCAPS_PRIMARY | DSCAPS_DOUBLE);
 115     return CreateSurface(&desc);
 116 }
 117
 118 //-----------------------------------------------------------------------------
 119 // wxIDirectFBSurface
 120 //-----------------------------------------------------------------------------
 121
 122 DFBSurfacePixelFormat wxIDirectFBSurface::GetPixelFormat()
 123 {
 124     DFBSurfacePixelFormat format = DSPF_UNKNOWN;
 125     GetPixelFormat(&format);
 126     return format;
 127 }
 128
 129 int wxIDirectFBSurface::GetDepth()
 130 {
 131     DFBSurfacePixelFormat format = DSPF_UNKNOWN;
 132
 133     if ( !GetPixelFormat(&format) )
 134         return -1;
 135
 136     return DFB_BITS_PER_PIXEL(format);
 137 }
 138
 139 wxIDirectFBSurfacePtr
 140 wxIDirectFBSurface::CreateCompatible(const wxSize& sz, int flags)
 141 {
 142     wxSize size(sz);
 143     if ( size == wxDefaultSize )
 144     {
 145         if ( !GetSize(&size.x, &size.y) )
 146             return NULL;
 147     }
 148
 149     wxCHECK_MSG( size.x > 0 && size.y > 0, NULL, "invalid size" );
 150
 151     DFBSurfaceDescription desc;
 152     desc.flags = (DFBSurfaceDescriptionFlags)(
 153             DSDESC_CAPS | DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT);
 154     GetCapabilities(&desc.caps);
 155     GetPixelFormat(&desc.pixelformat);
 156     desc.width = size.x;
 157     desc.height = size.y;
 158
 159     // filter out caps that don't make sense for a new compatible surface:
 160     int caps = desc.caps;
 161     caps &= ~DSCAPS_PRIMARY;
 162     caps &= ~DSCAPS_SUBSURFACE;
 163     if ( flags & CreateCompatible_NoBackBuffer )
 164     {
 165         caps &= ~DSCAPS_DOUBLE;
 166         caps &= ~DSCAPS_TRIPLE;
 167     }
 168     desc.caps = (DFBSurfaceCapabilities)caps;
 169
 170     wxIDirectFBSurfacePtr snew(wxIDirectFB::Get()->CreateSurface(&desc));
 171     if ( !snew )
 172         return NULL;
 173
 174     if ( desc.pixelformat == DSPF_LUT8 )
 175     {
 176         wxIDirectFBPalettePtr pal(GetPalette());
 177         if ( pal )
 178         {
 179             if ( !snew->SetPalette(pal) )
 180                 return NULL;
 181         }
 182     }
 183
 184     return snew;
 185 }
 186
 187 wxIDirectFBSurfacePtr wxIDirectFBSurface::Clone()
 188 {
 189     wxIDirectFBSurfacePtr snew(CreateCompatible());
 190     if ( !snew )
 191         return NULL;
 192
 193     if ( !snew->SetBlittingFlags(DSBLIT_NOFX) )
 194         return NULL;
 195
 196     if ( !snew->Blit(GetRaw(), NULL, 0, 0) )
 197         return NULL;
 198
 199     return snew;
 200 }
 201
 202 bool wxIDirectFBSurface::Flip(const DFBRegion *region, int flags)
 203 {
 204     return Check(m_ptr->Flip(m_ptr, region, (DFBSurfaceFlipFlags)flags));
 205 }
 206
 207 bool wxIDirectFBSurface::FlipToFront(const DFBRegion *region)
 208 {
 209     // Blit to the front buffer instead of exchanging front and back ones.
 210     // Always doing this ensures that back and front buffer have same content
 211     // and so painting to the back buffer will never lose any previous
 212     // drawings:
 213     return Flip(region, DSFLIP_BLIT);
 214 }
 215
 216 //-----------------------------------------------------------------------------
 217 // wxIDirectFBDisplayLayer
 218 //-----------------------------------------------------------------------------
 219
 220 wxVideoMode wxIDirectFBDisplayLayer::GetVideoMode()
 221 {
 222     DFBDisplayLayerConfig cfg;
 223     if ( !GetConfiguration(&cfg) )
 224         return wxVideoMode(); // invalid
 225
 226     if ( !((cfg.flags & DLCONF_WIDTH) &&
 227            (cfg.flags & DLCONF_HEIGHT) &&
 228            (cfg.flags & DLCONF_PIXELFORMAT)) )
 229         return wxVideoMode(); // invalid
 230
 231     return wxVideoMode
 232            (
 233              cfg.width,
 234              cfg.height,
 235              DFB_BITS_PER_PIXEL(cfg.pixelformat)
 236            );
 237 }