direct3d.c

VLC Player Source Code

    Direct3DVoutClose( p_vout );
}

/*****************************************************************************
 * Manage: handle Sys events
 *****************************************************************************
 * This function should be called regularly by the video output thread.
 * It returns a non null value if an error occurred.
 *****************************************************************************/
static int Manage( vout_thread_t *p_vout )
{
    /* If we do not control our window, we check for geometry changes
     * ourselves because the parent might not send us its events. */
    vlc_mutex_lock( &p_vout->p_sys->lock );
    if( p_vout->p_sys->hparent && !p_vout->b_fullscreen )
    {
        RECT rect_parent;
        POINT point;

        vlc_mutex_unlock( &p_vout->p_sys->lock );

        GetClientRect( p_vout->p_sys->hparent, &rect_parent );
        point.x = point.y = 0;
        ClientToScreen( p_vout->p_sys->hparent, &point );
        OffsetRect( &rect_parent, point.x, point.y );

        if( !EqualRect( &rect_parent, &p_vout->p_sys->rect_parent ) )
        {
            p_vout->p_sys->rect_parent = rect_parent;

            SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
                          rect_parent.right - rect_parent.left,
                          rect_parent.bottom - rect_parent.top,
                          SWP_NOZORDER );
        }
    }
    else
    {
        vlc_mutex_unlock( &p_vout->p_sys->lock );
    }

    /*
     * Position Change
     */
    if( p_vout->p_sys->i_changes & DX_POSITION_CHANGE )
    {
#if 0 /* need that when bicubic filter is available */
        RECT rect;
        UINT width, height;

        GetClientRect(p_vout->p_sys->hvideownd, &rect);
        width  = rect.right-rect.left;
        height = rect.bottom-rect.top;

        if( (width != p_vout->p_sys->d3dpp.BackBufferWidth)
         || (height != p_vout->p_sys->d3dpp.BackBufferHeight) )
        {
            msg_Dbg(p_vout, "resizing device back buffers to (%lux%lu)", width, height);
            // need to reset D3D device to resize back buffer
            if( VLC_SUCCESS != Direct3DVoutResetDevice(p_vout, width, height) )
                return VLC_EGENERIC;
        }
#endif
        p_vout->p_sys->i_changes &= ~DX_POSITION_CHANGE;
    }

    /* Check for cropping / aspect changes */
    if( p_vout->i_changes & VOUT_CROP_CHANGE ||
        p_vout->i_changes & VOUT_ASPECT_CHANGE )
    {
        p_vout->i_changes &= ~VOUT_CROP_CHANGE;
        p_vout->i_changes &= ~VOUT_ASPECT_CHANGE;

        p_vout->fmt_out.i_x_offset = p_vout->fmt_in.i_x_offset;
        p_vout->fmt_out.i_y_offset = p_vout->fmt_in.i_y_offset;
        p_vout->fmt_out.i_visible_width = p_vout->fmt_in.i_visible_width;
        p_vout->fmt_out.i_visible_height = p_vout->fmt_in.i_visible_height;
        p_vout->fmt_out.i_aspect = p_vout->fmt_in.i_aspect;
        p_vout->fmt_out.i_sar_num = p_vout->fmt_in.i_sar_num;
        p_vout->fmt_out.i_sar_den = p_vout->fmt_in.i_sar_den;
        p_vout->output.i_aspect = p_vout->fmt_in.i_aspect;
        UpdateRects( p_vout, true );
    }

    /* We used to call the Win32 PeekMessage function here to read the window
     * messages. But since window can stay blocked into this function for a
     * long time (for example when you move your window on the screen), I
     * decided to isolate PeekMessage in another thread. */

    /*
     * Fullscreen change
     */
    if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
        || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
    {
        Win32ToggleFullscreen( p_vout );

        p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
        p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
    }

    /*
     * Pointer change
     */
    if( p_vout->b_fullscreen && !p_vout->p_sys->b_cursor_hidden &&
        (mdate() - p_vout->p_sys->i_lastmoved) >
            p_vout->p_sys->i_mouse_hide_timeout )
    {
        POINT point;
        HWND hwnd;

        /* Hide the cursor only if it is inside our window */
        GetCursorPos( &point );
        hwnd = WindowFromPoint(point);
        if( hwnd == p_vout->p_sys->hwnd || hwnd == p_vout->p_sys->hvideownd )
        {
            PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
        }
        else
        {
            p_vout->p_sys->i_lastmoved = mdate();
        }
    }

    /*
     * "Always on top" status change
     */
    if( p_vout->p_sys->b_on_top_change )
    {
        vlc_value_t val;
        HMENU hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );

        var_Get( p_vout, "video-on-top", &val );

        /* Set the window on top if necessary */
        if( val.b_bool && !( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
                           & WS_EX_TOPMOST ) )
        {
            CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
                           MF_BYCOMMAND | MFS_CHECKED );
            SetWindowPos( p_vout->p_sys->hwnd, HWND_TOPMOST, 0, 0, 0, 0,
                          SWP_NOSIZE | SWP_NOMOVE );
        }
        else
        /* The window shouldn't be on top */
        if( !val.b_bool && ( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
                           & WS_EX_TOPMOST ) )
        {
            CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
                           MF_BYCOMMAND | MFS_UNCHECKED );
            SetWindowPos( p_vout->p_sys->hwnd, HWND_NOTOPMOST, 0, 0, 0, 0,
                          SWP_NOSIZE | SWP_NOMOVE );
        }

        p_vout->p_sys->b_on_top_change = false;
    }

    /* Check if the event thread is still running */
    if( !vlc_object_alive (p_vout->p_sys->p_event) )
    {
        return VLC_EGENERIC; /* exit */
    }

    return VLC_SUCCESS;
}

/*****************************************************************************
 * Display: displays previously rendered output
 *****************************************************************************
 * This function sends the currently rendered image to the display, wait until
 * it is displayed and switch the two rendering buffers, preparing next frame.
 *****************************************************************************/
static void Display( vout_thread_t *p_vout, picture_t *p_pic )
{
    LPDIRECT3DDEVICE9       p_d3ddev = p_vout->p_sys->p_d3ddev;
    // Present the back buffer contents to the display
    // stretching and filtering happens here
    HRESULT hr = IDirect3DDevice9_Present(p_d3ddev,
                    &(p_vout->p_sys->rect_src_clipped),
                    NULL, NULL, NULL);
    if( FAILED(hr) )
        msg_Dbg( p_vout, "%s:%d (hr=0x%0lX)", __FUNCTION__, __LINE__, hr);
}

/*
** this function is only used once when the first picture is received
** this function will show the video window once a picture is ready
*/

static void FirstDisplay( vout_thread_t *p_vout, picture_t *p_pic )
{
    /* get initial picture presented through D3D */
    Display(p_vout, p_pic);

    /*
    ** Video window is initially hidden, show it now since we got a
    ** picture to show.
    */
    SetWindowPos( p_vout->p_sys->hvideownd, 0, 0, 0, 0, 0,
        SWP_ASYNCWINDOWPOS|
        SWP_FRAMECHANGED|
        SWP_SHOWWINDOW|
        SWP_NOMOVE|
        SWP_NOSIZE|
        SWP_NOZORDER );

    /* use and restores proper display function for further pictures */
    p_vout->pf_display = Display;
}

/*****************************************************************************
 * DirectD3DVoutCreate: Initialize and instance of Direct3D9
 *****************************************************************************
 * This function initialize Direct3D and analyze available resources from
 * default adapter.
 *****************************************************************************/
static int Direct3DVoutCreate( vout_thread_t *p_vout )
{
    HRESULT hr;
    LPDIRECT3D9 p_d3dobj;
    D3DCAPS9 d3dCaps;

    LPDIRECT3D9 (WINAPI *OurDirect3DCreate9)(UINT SDKVersion);

    p_vout->p_sys->hd3d9_dll = LoadLibrary(TEXT("D3D9.DLL"));
    if( NULL == p_vout->p_sys->hd3d9_dll )
    {
        msg_Warn( p_vout, "cannot load d3d9.dll, aborting" );
        return VLC_EGENERIC;
    }

    OurDirect3DCreate9 =
      (void *)GetProcAddress( p_vout->p_sys->hd3d9_dll,
                              TEXT("Direct3DCreate9") );
    if( OurDirect3DCreate9 == NULL )
    {
        msg_Err( p_vout, "Cannot locate reference to Direct3DCreate9 ABI in DLL" );
        return VLC_EGENERIC;
    }

    /* Create the D3D object. */
    p_d3dobj = OurDirect3DCreate9( D3D_SDK_VERSION );
    if( NULL == p_d3dobj )
    {
       msg_Err( p_vout, "Could not create Direct3D9 instance.");
       return VLC_EGENERIC;
    }
    p_vout->p_sys->p_d3dobj = p_d3dobj;

    /*
    ** Get device capabilities
    */
    ZeroMemory(&d3dCaps, sizeof(d3dCaps));
    hr = IDirect3D9_GetDeviceCaps(p_d3dobj, D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, &d3dCaps);
    if( FAILED(hr) )
    {
       msg_Err( p_vout, "Could not read adapter capabilities. (hr=0x%lX)", hr);
       return VLC_EGENERIC;
    }
    /* TODO: need to test device capabilities and select the right render function */

    return VLC_SUCCESS;
}

/*****************************************************************************
 * DirectD3DVoutRelease: release an instance of Direct3D9
 *****************************************************************************/

static void Direct3DVoutRelease( vout_thread_t *p_vout )
{
    if( p_vout->p_sys->p_d3dobj )
    {
       IDirect3D9_Release(p_vout->p_sys->p_d3dobj);
       p_vout->p_sys->p_d3dobj = NULL;
    }
    if( NULL != p_vout->p_sys->hd3d9_dll )
    {
        FreeLibrary(p_vout->p_sys->hd3d9_dll);
        p_vout->p_sys->hd3d9_dll = NULL;
    }
}

static int Direct3DFillPresentationParameters(vout_thread_t *p_vout, D3DPRESENT_PARAMETERS *d3dpp)
{
    LPDIRECT3D9 p_d3dobj = p_vout->p_sys->p_d3dobj;
    D3DDISPLAYMODE d3ddm;
    HRESULT hr;

    /*
    ** Get the current desktop display mode, so we can set up a back
    ** buffer of the same format
    */
    hr = IDirect3D9_GetAdapterDisplayMode(p_d3dobj, D3DADAPTER_DEFAULT, &d3ddm );
    if( FAILED(hr))
    {
       msg_Err( p_vout, "Could not read adapter display mode. (hr=0x%lX)", hr);
       return VLC_EGENERIC;
    }

    /* keep a copy of current desktop format */
    p_vout->p_sys->bbFormat = d3ddm.Format;

    /* Set up the structure used to create the D3DDevice. */
    ZeroMemory( d3dpp, sizeof(D3DPRESENT_PARAMETERS) );
    d3dpp->Flags                  = D3DPRESENTFLAG_VIDEO;
    d3dpp->Windowed               = TRUE;
    d3dpp->hDeviceWindow          = p_vout->p_sys->hvideownd;
    d3dpp->BackBufferWidth        = p_vout->output.i_width;
    d3dpp->BackBufferHeight       = p_vout->output.i_height;
    d3dpp->SwapEffect             = D3DSWAPEFFECT_COPY;
    d3dpp->MultiSampleType        = D3DMULTISAMPLE_NONE;
    d3dpp->PresentationInterval   = D3DPRESENT_INTERVAL_DEFAULT;
    d3dpp->BackBufferFormat       = d3ddm.Format;
    d3dpp->BackBufferCount        = 1;
    d3dpp->EnableAutoDepthStencil = FALSE;

    return VLC_SUCCESS;
}

/*****************************************************************************
 * DirectD3DVoutOpen: Takes care of all the Direct3D9 initialisations
 *****************************************************************************
 * This function creates Direct3D device
 * this must be called from the vout thread for performance reason, as
 * all Direct3D Device APIs are used in a non multithread safe environment
 *****************************************************************************/
static int Direct3DVoutOpen( vout_thread_t *p_vout )
{
    LPDIRECT3D9 p_d3dobj = p_vout->p_sys->p_d3dobj;
    LPDIRECT3DDEVICE9 p_d3ddev;
    D3DPRESENT_PARAMETERS d3dpp;
    HRESULT hr;

    if( VLC_SUCCESS != Direct3DFillPresentationParameters(p_vout, &d3dpp) )
        return VLC_EGENERIC;

    // Create the D3DDevice
    hr = IDirect3D9_CreateDevice(p_d3dobj, D3DADAPTER_DEFAULT,
                                 D3DDEVTYPE_HAL, p_vout->p_sys->hvideownd,
                                 D3DCREATE_SOFTWARE_VERTEXPROCESSING|
                                 D3DCREATE_MULTITHREADED,
                                 &d3dpp, &p_d3ddev );
    if( FAILED(hr) )
    {
       msg_Err(p_vout, "Could not create the D3D device! (hr=0x%lX)", hr);
       return VLC_EGENERIC;
    }
    p_vout->p_sys->p_d3ddev = p_d3ddev;

    msg_Dbg( p_vout, "Direct3D device adapter successfully initialized" );
    return VLC_SUCCESS;
}

/*****************************************************************************
 * DirectD3DClose: release the Direct3D9 device
 *****************************************************************************/
static void Direct3DVoutClose( vout_thread_t *p_vout )
{
    if( p_vout->p_sys->p_d3ddev )
    {
       IDirect3DDevice9_Release(p_vout->p_sys->p_d3ddev);
       p_vout->p_sys->p_d3ddev = NULL;
    }
 
    p_vout->p_sys->hmonitor = NULL;
}

/*****************************************************************************
 * DirectD3DClose: reset the Direct3D9 device
 *****************************************************************************
 * All resources must be deallocated before the reset occur, they will be
 * realllocated once the reset has been performed successfully