wingdi.c

来自「video linux conference」· C语言 代码 · 共 1,280 行 · 第 1/3 页

                    NULL, GetModuleHandle(NULL),
                    (LPVOID)p_vout );            /* send p_vout to WM_CREATE */

    /* Initialize offscreen buffer */
    InitBuffers( p_vout );

    p_vout->pf_control = Control;

    /* Tell the video output we're ready to receive data */
    vlc_thread_ready( p_event );

    while( !p_event->b_die && GetMessage( &msg, 0, 0, 0 ) )
    {
        /* Check if we are asked to exit */
        if( p_event->b_die ) break;

        switch( msg.message )
        {
        case WM_KEYDOWN:
            switch( msg.wParam )
            {
            case VK_ESCAPE:
                p_event->p_vlc->b_die = VLC_TRUE;
                break;
            }
            TranslateMessage( &msg );
            break;

        case WM_CHAR:
            switch( msg.wParam )
            {
            case 'q':
            case 'Q':
                p_event->p_vlc->b_die = VLC_TRUE;
                break;
            }
            break;

        default:
            TranslateMessage( &msg );
            DispatchMessage( &msg );
            break;
        }
    }

    msg_Dbg( p_vout, "CloseWindow" );

#ifdef MODULE_NAME_IS_wingapi
    GXCloseDisplay();
#else
    DeleteDC( p_vout->p_sys->off_dc );
    DeleteObject( p_vout->p_sys->off_bitmap );
#endif

    DestroyWindow( p_vout->p_sys->hwnd );
    if( p_vout->p_sys->hfswnd ) DestroyWindow( p_vout->p_sys->hfswnd );

    if( p_vout->p_sys->hparent )
        vout_ReleaseWindow( p_vout, (void *)p_vout->p_sys->hparent );
}

/*****************************************************************************
 * UpdateRects: update clipping rectangles
 *****************************************************************************
 * This function is called when the window position or size are changed, and
 * its job is to update the source and destination RECTs used to display the
 * picture.
 *****************************************************************************/
static void UpdateRects( vout_thread_t *p_vout, vlc_bool_t b_force )
{
#define rect_src p_vout->p_sys->rect_src
#define rect_src_clipped p_vout->p_sys->rect_src_clipped
#define rect_dest p_vout->p_sys->rect_dest
#define rect_dest_clipped p_vout->p_sys->rect_dest_clipped

    int i_width, i_height, i_x, i_y;

    RECT  rect;
    POINT point;

    /* Retrieve the window size */
    GetClientRect( p_vout->p_sys->hwnd, &rect );

    /* Retrieve the window position */
    point.x = point.y = 0;
    ClientToScreen( p_vout->p_sys->hwnd, &point );

    /* If nothing changed, we can return */
    if( !b_force
         && p_vout->p_sys->i_window_width == rect.right
         && p_vout->p_sys->i_window_height == rect.bottom
         && p_vout->p_sys->i_window_x == point.x
         && p_vout->p_sys->i_window_y == point.y )
    {
        return;
    }

    /* Update the window position and size */
    p_vout->p_sys->i_window_x = point.x;
    p_vout->p_sys->i_window_y = point.y;
    p_vout->p_sys->i_window_width = rect.right;
    p_vout->p_sys->i_window_height = rect.bottom;

    vout_PlacePicture( p_vout, rect.right, rect.bottom,
                       &i_x, &i_y, &i_width, &i_height );

    if( p_vout->p_sys->hvideownd )
        SetWindowPos( p_vout->p_sys->hvideownd, HWND_TOP,
                      i_x, i_y, i_width, i_height, 0 );

    /* Destination image position and dimensions */
    rect_dest.left = point.x + i_x;
    rect_dest.right = rect_dest.left + i_width;
    rect_dest.top = point.y + i_y;
    rect_dest.bottom = rect_dest.top + i_height;

    /* Clip the destination window */
    if( !IntersectRect( &rect_dest_clipped, &rect_dest,
                        &p_vout->p_sys->rect_display ) )
    {
        SetRectEmpty( &rect_src_clipped );
        return;
    }

#if 0
    msg_Dbg( p_vout, "image_dst_clipped coords: %i,%i,%i,%i",
                     rect_dest_clipped.left, rect_dest_clipped.top,
                     rect_dest_clipped.right, rect_dest_clipped.bottom );
#endif

    /* the 2 following lines are to fix a bug when clicking on the desktop */
    if( (rect_dest_clipped.right - rect_dest_clipped.left)==0 ||
        (rect_dest_clipped.bottom - rect_dest_clipped.top)==0 )
    {
        SetRectEmpty( &rect_src_clipped );
        return;
    }

    /* src image dimensions */
    rect_src.left = 0;
    rect_src.top = 0;
    rect_src.right = p_vout->output.i_width;
    rect_src.bottom = p_vout->output.i_height;

    /* Clip the source image */
    rect_src_clipped.left = (rect_dest_clipped.left - rect_dest.left) *
      p_vout->output.i_width / (rect_dest.right - rect_dest.left);
    rect_src_clipped.right = p_vout->output.i_width -
      (rect_dest.right - rect_dest_clipped.right) * p_vout->output.i_width /
      (rect_dest.right - rect_dest.left);
    rect_src_clipped.top = (rect_dest_clipped.top - rect_dest.top) *
      p_vout->output.i_height / (rect_dest.bottom - rect_dest.top);
    rect_src_clipped.bottom = p_vout->output.i_height -
      (rect_dest.bottom - rect_dest_clipped.bottom) * p_vout->output.i_height /
      (rect_dest.bottom - rect_dest.top);

#if 0
    msg_Dbg( p_vout, "image_src_clipped coords: %i,%i,%i,%i",
                     rect_src_clipped.left, rect_src_clipped.top,
                     rect_src_clipped.right, rect_src_clipped.bottom );
#endif

    /* The destination coordinates need to be relative to the current
     * directdraw primary surface (display) */
    rect_dest_clipped.left -= p_vout->p_sys->rect_display.left;
    rect_dest_clipped.right -= p_vout->p_sys->rect_display.left;
    rect_dest_clipped.top -= p_vout->p_sys->rect_display.top;
    rect_dest_clipped.bottom -= p_vout->p_sys->rect_display.top;

    /* Signal the change in size/position */
    p_vout->p_sys->i_changes |= DX_POSITION_CHANGE;

#undef rect_src
#undef rect_src_clipped
#undef rect_dest
#undef rect_dest_clipped
}

/*****************************************************************************
 * Message handler for the main window
 *****************************************************************************/
static long FAR PASCAL WndProc( HWND hWnd, UINT message,
                                WPARAM wParam, LPARAM lParam )
{
    vout_thread_t *p_vout;

    if( message == WM_CREATE )
    {
        /* Store p_vout for future use */
        p_vout = (vout_thread_t *)((CREATESTRUCT *)lParam)->lpCreateParams;
        SetWindowLongPtr( hWnd, GWLP_USERDATA, (LONG_PTR)p_vout );
        if( p_vout ) msg_Dbg( p_vout, "create: %p", hWnd );
    }
    else
    {
        p_vout = (vout_thread_t *)GetWindowLongPtr( hWnd, GWLP_USERDATA );
    }

#ifndef UNDER_CE
    /* Catch the screensaver and the monitor turn-off */
    if( message == WM_SYSCOMMAND &&
        ( wParam == SC_SCREENSAVE || wParam == SC_MONITORPOWER ) )
    {
        //if( p_vout ) msg_Dbg( p_vout, "WinProc WM_SYSCOMMAND screensaver" );
        return 0; /* this stops them from happening */
    }
#endif

    if( !p_vout )
    {
        /* Hmmm mozilla does manage somehow to save the pointer to our
         * windowproc and still calls it after the vout has been closed. */
        return DefWindowProc(hWnd, message, wParam, lParam);
    }

    if( hWnd != p_vout->p_sys->hwnd &&
        hWnd != p_vout->p_sys->hfswnd &&
        hWnd != p_vout->p_sys->hvideownd )
        return DefWindowProc(hWnd, message, wParam, lParam);

    switch( message )
    {
    case WM_WINDOWPOSCHANGED:
        if( hWnd == p_vout->p_sys->hwnd )
            UpdateRects( p_vout, VLC_TRUE );
        break;

#if 0
    case WM_ACTIVATE:
        msg_Err( p_vout, "WM_ACTIVATE: %i", wParam );
        if( wParam == WA_ACTIVE || wParam == WA_CLICKACTIVE )
            GXResume();
        else if( wParam == WA_INACTIVE )
            GXSuspend();
        break;
#endif

    case WM_KILLFOCUS:
        p_vout->p_sys->b_focus = VLC_FALSE;
        if( !p_vout->p_sys->b_parent_focus ) GXSuspend();

        if( hWnd == p_vout->p_sys->hfswnd )
        {
#ifdef UNDER_CE
            HWND htbar = FindWindow( _T("HHTaskbar"), NULL );
            ShowWindow( htbar, SW_SHOW );
#endif
        }

        if( !p_vout->p_sys->hparent ||
            hWnd == p_vout->p_sys->hfswnd )
        {
            SHFullScreen( hWnd, SHFS_SHOWSIPBUTTON );
        }
        break;

    case WM_SETFOCUS:
        p_vout->p_sys->b_focus = VLC_TRUE;
        GXResume();

        if( p_vout->p_sys->hparent &&
            hWnd != p_vout->p_sys->hfswnd && p_vout->b_fullscreen )
            p_vout->p_sys->i_changes |= VOUT_FULLSCREEN_CHANGE;

        if( hWnd == p_vout->p_sys->hfswnd )
        {
#ifdef UNDER_CE
            HWND htbar = FindWindow( _T("HHTaskbar"), NULL );
            ShowWindow( htbar, SW_HIDE );
#endif
        }

        if( !p_vout->p_sys->hparent ||
            hWnd == p_vout->p_sys->hfswnd )
        {
            SHFullScreen( hWnd, SHFS_HIDESIPBUTTON );
        }
        break;

    case WM_LBUTTONDOWN:
        p_vout->p_sys->i_changes |= VOUT_FULLSCREEN_CHANGE;
        break;
    case WM_MOUSEMOVE:
        break;
    case WM_LBUTTONUP:
        break;

    case WM_INITMENUPOPUP:
        p_vout->p_sys->b_video_display = VLC_FALSE;
        break;

    case WM_NOTIFY:
        // Redo the video display because menu can be closed
        // FIXME verify if p_child_window exits
        if( (((NMHDR *)lParam)->code) == NM_CUSTOMDRAW )
            p_vout->p_sys->b_video_display = VLC_TRUE;
        break;

    case WM_DESTROY:
        msg_Dbg( p_vout, "WinProc WM_DESTROY" );
        PostQuitMessage( 0 );
        break;

    default:
        return DefWindowProc( hWnd, message, wParam, lParam );
    }

    return 0;
}

/*****************************************************************************
 * InitBuffers: initialize an offscreen bitmap for direct buffer operations.
 *****************************************************************************/
static void InitBuffers( vout_thread_t *p_vout )
{
    BITMAPINFOHEADER *p_header = &p_vout->p_sys->bitmapinfo.bmiHeader;
    BITMAPINFO *p_info = &p_vout->p_sys->bitmapinfo;
    int i_pixels = p_vout->render.i_height * p_vout->render.i_width;
    HDC window_dc = GetDC( p_vout->p_sys->hvideownd );

    /* Get screen properties */
#ifdef MODULE_NAME_IS_wingapi
    GXDisplayProperties gx_displayprop = GXGetDisplayProperties();
    p_vout->p_sys->i_depth = gx_displayprop.cBPP;
#else
    p_vout->p_sys->i_depth = GetDeviceCaps( window_dc, PLANES ) *
        GetDeviceCaps( window_dc, BITSPIXEL );
#endif
    msg_Dbg( p_vout, "GDI depth is %i", p_vout->p_sys->i_depth );

#ifdef MODULE_NAME_IS_wingapi
    GXOpenDisplay( p_vout->p_sys->hvideownd, GX_FULLSCREEN );

#else

    /* Initialize offscreen bitmap */
    memset( p_info, 0, sizeof( BITMAPINFO ) + 3 * sizeof( RGBQUAD ) );

    p_header->biSize = sizeof( BITMAPINFOHEADER );
    p_header->biSizeImage = 0;
    p_header->biPlanes = 1;
    switch( p_vout->p_sys->i_depth )
    {
    case 8:
        p_header->biBitCount = 8;
        p_header->biCompression = BI_RGB;
        /* FIXME: we need a palette here */
        break;
    case 15:
        p_header->biBitCount = 15;
        p_header->biCompression = BI_BITFIELDS;//BI_RGB;
        ((DWORD*)p_info->bmiColors)[0] = 0x00007c00;
        ((DWORD*)p_info->bmiColors)[1] = 0x000003e0;
        ((DWORD*)p_info->bmiColors)[2] = 0x0000001f;
        break;
    case 16:
        p_header->biBitCount = 16;
        p_header->biCompression = BI_BITFIELDS;//BI_RGB;
        ((DWORD*)p_info->bmiColors)[0] = 0x0000f800;
        ((DWORD*)p_info->bmiColors)[1] = 0x000007e0;
        ((DWORD*)p_info->bmiColors)[2] = 0x0000001f;
        break;
    case 24:
        p_header->biBitCount = 24;
        p_header->biCompression = BI_RGB;
        ((DWORD*)p_info->bmiColors)[0] = 0x00ff0000;
        ((DWORD*)p_info->bmiColors)[1] = 0x0000ff00;
        ((DWORD*)p_info->bmiColors)[2] = 0x000000ff;
        break;
    case 32:
        p_header->biBitCount = 32;
        p_header->biCompression = BI_RGB;
        ((DWORD*)p_info->bmiColors)[0] = 0x00ff0000;
        ((DWORD*)p_info->bmiColors)[1] = 0x0000ff00;
        ((DWORD*)p_info->bmiColors)[2] = 0x000000ff;
        break;
    default:
        msg_Err( p_vout, "screen depth %i not supported",
                 p_vout->p_sys->i_depth );
        return;
        break;
    }
    p_header->biWidth = p_vout->render.i_width;
    p_header->biHeight = -p_vout->render.i_height;
    p_header->biClrImportant = 0;
    p_header->biClrUsed = 0;
    p_header->biXPelsPerMeter = 0;
    p_header->biYPelsPerMeter = 0;

    p_vout->p_sys->i_pic_pixel_pitch = p_header->biBitCount / 8;
    p_vout->p_sys->i_pic_pitch = p_header->biBitCount * p_header->biWidth / 8;

    p_vout->p_sys->off_bitmap =
        CreateDIBSection( window_dc, (BITMAPINFO *)p_header, DIB_RGB_COLORS,
                          (void**)&p_vout->p_sys->p_pic_buffer, NULL, 0 );

    p_vout->p_sys->off_dc = CreateCompatibleDC( window_dc );

    SelectObject( p_vout->p_sys->off_dc, p_vout->p_sys->off_bitmap );
    ReleaseDC( 0, window_dc );
#endif
}

/*****************************************************************************
 * Control: control facility for the vout
 *****************************************************************************/
static int Control( vout_thread_t *p_vout, int i_query, va_list args )
{
    vlc_bool_t b_bool;

    switch( i_query )
    {
    case VOUT_SET_FOCUS:
        b_bool = va_arg( args, vlc_bool_t );

        p_vout->p_sys->b_parent_focus = b_bool;
        if( b_bool ) GXResume();
        else if( !p_vout->p_sys->b_focus ) GXSuspend();

        return VLC_SUCCESS;

    default:
        return vout_vaControlDefault( p_vout, i_query, args );
    }
}