wingdi.c

video linux conference

/*****************************************************************************
 * wingdi.c : Win32 / WinCE GDI video output plugin for vlc
 *****************************************************************************
 * Copyright (C) 2002 VideoLAN
 * $Id: wingdi.c 11387 2005-06-10 15:32:08Z hartman $
 *
 * Authors: Gildas Bazin <[e-mail]>
 *          Samuel Hocevar <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#include <stdlib.h>                                      /* malloc(), free() */
#include <string.h>

#include <vlc/vlc.h>
#include <vlc/vout.h>

#include <commctrl.h>

#define SHFS_SHOWSIPBUTTON 0x0004
#define SHFS_HIDESIPBUTTON 0x0008

#ifdef UNDER_CE
#   define MENU_HEIGHT 26
    BOOL SHFullScreen(HWND hwndRequester, DWORD dwState);
#else
#   define MENU_HEIGHT 0
#   define SHFullScreen(a,b)
#endif

#ifdef MODULE_NAME_IS_wingapi
    typedef struct GXDisplayProperties {
        DWORD cxWidth;
        DWORD cyHeight;
        long cbxPitch;
        long cbyPitch;
        long cBPP;
        DWORD ffFormat;
    } GXDisplayProperties;

    typedef struct GXScreenRect {
        DWORD dwTop;
        DWORD dwLeft;
        DWORD dwWidth;
        DWORD dwHeight;
    } GXScreenRect;

#   define GX_FULLSCREEN    0x01
#   define GX_NORMALKEYS    0x02
#   define GX_LANDSCAPEKEYS 0x03

#   ifndef kfLandscape
#       define kfLandscape      0x8
#       define kfPalette        0x10
#       define kfDirect         0x20
#       define kfDirect555      0x40
#       define kfDirect565      0x80
#       define kfDirect888      0x100
#       define kfDirect444      0x200
#       define kfDirectInverted 0x400
#   endif
#endif /* MODULE_NAME_IS_wingapi */

#define MAX_DIRECTBUFFERS 10

#ifdef UNDER_CE
#ifndef WS_OVERLAPPEDWINDOW
#   define WS_OVERLAPPEDWINDOW 0xcf0000
#endif
#ifndef WS_EX_NOPARENTNOTIFY
#   define WS_EX_NOPARENTNOTIFY 4
#endif
#ifndef WS_EX_APPWINDOW
#define WS_EX_APPWINDOW 0x40000
#endif
#define SetWindowLongPtr SetWindowLong
#define GetWindowLongPtr GetWindowLong
#define GWLP_USERDATA GWL_USERDATA
#endif //UNDER_CE

#ifndef WS_NONAVDONEBUTTON
#define WS_NONAVDONEBUTTON 0
#endif
/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
static int  OpenVideo  ( vlc_object_t * );
static void CloseVideo ( vlc_object_t * );

static int  Init      ( vout_thread_t * );
static void End       ( vout_thread_t * );
static int  Manage    ( vout_thread_t * );
static void Render    ( vout_thread_t *, picture_t * );
#ifdef MODULE_NAME_IS_wingapi
static void DisplayGAPI( vout_thread_t *, picture_t * );
static int GAPILockSurface( vout_thread_t *, picture_t * );
static int GAPIUnlockSurface( vout_thread_t *, picture_t * );
#else
static void DisplayGDI( vout_thread_t *, picture_t * );
#endif
static void SetPalette( vout_thread_t *, uint16_t *, uint16_t *, uint16_t * );

static void EventThread        ( vlc_object_t * );
static long FAR PASCAL WndProc ( HWND, UINT, WPARAM, LPARAM );
static void InitBuffers        ( vout_thread_t * );
static void UpdateRects        ( vout_thread_t *, vlc_bool_t );

static int Control( vout_thread_t *p_vout, int i_query, va_list args );

/*****************************************************************************
 * Private structure
 *****************************************************************************/
struct vout_sys_t
{
    /* The event thread */
    vlc_object_t * p_event;

    /* Our video output window */
    HWND hwnd;
    HWND hvideownd;
    HWND hfswnd;
    int  i_depth;
    HWND                 hparent;             /* Handle of the parent window */
    WNDPROC              pf_wndproc;             /* Window handling callback */
    volatile uint16_t    i_changes;     /* changes made to the video display */
    RECT window_placement;

    /* Window position and size */
    int          i_window_x;
    int          i_window_y;
    int          i_window_width;
    int          i_window_height;
    int          render_width;
    int          render_height;

    /* Coordinates of src and dest images (used when blitting to display) */
    RECT         rect_src;
    RECT         rect_src_clipped;
    RECT         rect_dest;
    RECT         rect_dest_clipped;
    RECT         rect_parent;
    RECT         rect_display;

    /* Our offscreen bitmap and its framebuffer */
    HDC        off_dc;
    HBITMAP    off_bitmap;
    uint8_t *  p_pic_buffer;
    int        i_pic_pitch;
    int        i_pic_pixel_pitch;

    BITMAPINFO bitmapinfo;
    RGBQUAD    red;
    RGBQUAD    green;
    RGBQUAD    blue;

    /* WINCE stuff */
    vlc_bool_t   b_video_display;

    /* Window focus states */
    vlc_bool_t b_focus;
    vlc_bool_t b_parent_focus;

#ifdef MODULE_NAME_IS_wingapi
    HINSTANCE  gapi_dll;                    /* handle of the opened gapi dll */

    /* GAPI functions */
    int (*GXOpenDisplay)( HWND hWnd, DWORD dwFlags );
    int (*GXCloseDisplay)();
    void *(*GXBeginDraw)();
    int (*GXEndDraw)();
    GXDisplayProperties (*GXGetDisplayProperties)();
    int (*GXSuspend)();
    int (*GXResume)();
#endif
};

#define GXOpenDisplay p_vout->p_sys->GXOpenDisplay
#define GXCloseDisplay p_vout->p_sys->GXCloseDisplay
#define GXBeginDraw p_vout->p_sys->GXBeginDraw
#define GXEndDraw p_vout->p_sys->GXEndDraw
#define GXGetDisplayProperties p_vout->p_sys->GXGetDisplayProperties

#ifdef MODULE_NAME_IS_wingapi
#   define GXSuspend p_vout->p_sys->GXSuspend
#   define GXResume p_vout->p_sys->GXResume
#else
#   define GXSuspend()
#   define GXResume()
#endif

#define DX_POSITION_CHANGE 0x1000

/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
vlc_module_begin();
    set_category( CAT_VIDEO );
    set_subcategory( SUBCAT_VIDEO_VOUT );
#ifdef MODULE_NAME_IS_wingapi
    set_shortname( _("Windows GAPI") );
    set_description( _("Windows GAPI video output") );
    set_capability( "video output", 20 );
#else
    set_shortname( _("Windows GDI") );
    set_description( _("Windows GDI video output") );
    set_capability( "video output", 10 );
#endif
    set_callbacks( OpenVideo, CloseVideo );
vlc_module_end();

/*****************************************************************************
 * OpenVideo: activate GDI video thread output method
 *****************************************************************************/
static int OpenVideo ( vlc_object_t *p_this )
{
    vout_thread_t * p_vout = (vout_thread_t *)p_this;
    vlc_value_t val;

    p_vout->p_sys = (vout_sys_t *)malloc( sizeof(vout_sys_t) );
    if( !p_vout->p_sys ) return VLC_ENOMEM;

#ifdef MODULE_NAME_IS_wingapi
    /* Load GAPI */
    p_vout->p_sys->gapi_dll = LoadLibrary( _T("GX.DLL") );
    if( p_vout->p_sys->gapi_dll == NULL )
    {
        msg_Warn( p_vout, "failed loading gx.dll" );
        free( p_vout->p_sys );
        return VLC_EGENERIC;
    }

    GXOpenDisplay = (void *)GetProcAddress( p_vout->p_sys->gapi_dll,
        _T("?GXOpenDisplay@@YAHPAUHWND__@@K@Z") );
    GXCloseDisplay = (void *)GetProcAddress( p_vout->p_sys->gapi_dll,
        _T("?GXCloseDisplay@@YAHXZ") );
    GXBeginDraw = (void *)GetProcAddress( p_vout->p_sys->gapi_dll,
        _T("?GXBeginDraw@@YAPAXXZ") );
    GXEndDraw = (void *)GetProcAddress( p_vout->p_sys->gapi_dll,
        _T("?GXEndDraw@@YAHXZ") );
    GXGetDisplayProperties = (void *)GetProcAddress( p_vout->p_sys->gapi_dll,
        _T("?GXGetDisplayProperties@@YA?AUGXDisplayProperties@@XZ") );
    GXSuspend = (void *)GetProcAddress( p_vout->p_sys->gapi_dll,
        _T("?GXSuspend@@YAHXZ") );
    GXResume = GetProcAddress( p_vout->p_sys->gapi_dll,
        _T("?GXResume@@YAHXZ") );

    if( !GXOpenDisplay || !GXCloseDisplay || !GXBeginDraw || !GXEndDraw ||
        !GXGetDisplayProperties || !GXSuspend || !GXResume )
    {
        msg_Err( p_vout, "failed GetProcAddress on gapi.dll" );
        free( p_vout->p_sys );
        return VLC_EGENERIC;
    }

    msg_Dbg( p_vout, "GAPI DLL loaded" );

    p_vout->p_sys->render_width = p_vout->render.i_width;
    p_vout->p_sys->render_height = p_vout->render.i_height;
#endif

    p_vout->p_sys->p_event = (vlc_object_t *)
        vlc_object_create( p_vout, VLC_OBJECT_GENERIC );
    if( !p_vout->p_sys->p_event )
    {
        free( p_vout->p_sys );
        return VLC_ENOMEM;
    }

    var_Create( p_vout->p_sys->p_event, "p_vout", VLC_VAR_ADDRESS );
    val.p_address = (void *)p_vout;
    var_Set( p_vout->p_sys->p_event, "p_vout", val );

    SetRectEmpty( &p_vout->p_sys->rect_display );
    SetRectEmpty( &p_vout->p_sys->rect_parent );

    if( vlc_thread_create( p_vout->p_sys->p_event, "GDI Event Thread",
                           EventThread, 0, 1 ) )
    {
        msg_Err( p_vout, "cannot spawn EventThread" );
        return VLC_ETHREAD;
    }

    p_vout->pf_init = Init;
    p_vout->pf_end = End;
    p_vout->pf_manage = Manage;
    p_vout->pf_render = Render;
#ifdef MODULE_NAME_IS_wingapi
    p_vout->pf_display = DisplayGAPI;
#else
    p_vout->pf_display = DisplayGDI;
#endif
    p_vout->p_sys->i_changes = 0;

    p_vout->p_sys->b_focus = 0;
    p_vout->p_sys->b_parent_focus = 0;

    return VLC_SUCCESS;
}

/*****************************************************************************
 * CloseVideo: deactivate the GDI video output
 *****************************************************************************/
static void CloseVideo ( vlc_object_t *p_this )
{
    vout_thread_t * p_vout = (vout_thread_t *)p_this;

    p_vout->p_sys->p_event->b_die = VLC_TRUE;
    PostMessage( p_vout->p_sys->hwnd, WM_NULL, 0, 0 );
    vlc_thread_join( p_vout->p_sys->p_event );

#ifdef MODULE_NAME_IS_wingapi
    FreeLibrary( p_vout->p_sys->gapi_dll );
#endif

    var_Destroy( p_vout->p_sys->p_event, "p_vout" );
    vlc_object_destroy( p_vout->p_sys->p_event );
    free( p_vout->p_sys );
}

/*****************************************************************************
 * Init: initialize video thread output method
 *****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
    picture_t *p_pic;

    p_vout->p_sys->rect_display.left = 0;
    p_vout->p_sys->rect_display.top = 0;
    p_vout->p_sys->rect_display.right  = GetSystemMetrics(SM_CXSCREEN);
    p_vout->p_sys->rect_display.bottom = GetSystemMetrics(SM_CYSCREEN);

    p_vout->p_sys->b_video_display = VLC_TRUE;
    p_vout->p_sys->p_event->b_die = VLC_FALSE;

    I_OUTPUTPICTURES = 0;

    /* Initialize the output structure */
    switch( p_vout->p_sys->i_depth )
    {
    case 8:
        p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
        p_vout->output.pf_setpalette = SetPalette;
        break;
    case 15:
        p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5');
        p_vout->output.i_rmask  = 0x7c00;
        p_vout->output.i_gmask  = 0x03e0;
        p_vout->output.i_bmask  = 0x001f;
        break;
    case 16:
        p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
        p_vout->output.i_rmask  = 0xf800;
        p_vout->output.i_gmask  = 0x07e0;
        p_vout->output.i_bmask  = 0x001f;
        break;
    case 24:
        p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
        p_vout->output.i_rmask  = 0x00ff0000;
        p_vout->output.i_gmask  = 0x0000ff00;
        p_vout->output.i_bmask  = 0x000000ff;
        break;
    case 32:
        p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
        p_vout->output.i_rmask  = 0x00ff0000;
        p_vout->output.i_gmask  = 0x0000ff00;
        p_vout->output.i_bmask  = 0x000000ff;
        break;
    default:
        msg_Err( p_vout, "screen depth %i not supported",
                 p_vout->p_sys->i_depth );
        return VLC_EGENERIC;
        break;
    }

    p_pic = &p_vout->p_picture[0];

#ifdef MODULE_NAME_IS_wingapi
    p_vout->output.i_width  = 0;
    p_vout->output.i_height = 0;
    p_pic->pf_lock  = GAPILockSurface;
    p_pic->pf_unlock = GAPIUnlockSurface;
    Manage( p_vout );
    GAPILockSurface( p_vout, p_pic );
    p_vout->i_changes = 0;
    p_vout->output.i_width  = p_vout->p_sys->render_width;
    p_vout->output.i_height = p_vout->p_sys->render_height;

#else
    p_vout->output.i_width  = p_vout->render.i_width;
    p_vout->output.i_height = p_vout->render.i_height;
#endif
    p_vout->output.i_aspect = p_vout->render.i_aspect;

    p_pic->p->p_pixels = p_vout->p_sys->p_pic_buffer;
    p_pic->p->i_lines = p_vout->output.i_height;
    p_pic->p->i_visible_lines = p_vout->output.i_height;
    p_pic->p->i_pitch = p_vout->p_sys->i_pic_pitch;
    p_pic->p->i_pixel_pitch = p_vout->p_sys->i_pic_pixel_pitch;
    p_pic->p->i_visible_pitch = p_vout->output.i_width *
        p_pic->p->i_pixel_pitch;
    p_pic->i_planes = 1;
    p_pic->i_status = DESTROYED_PICTURE;
    p_pic->i_type   = DIRECT_PICTURE;

    PP_OUTPUTPICTURE[ I_OUTPUTPICTURES++ ] = p_pic;

    return VLC_SUCCESS;
}

/*****************************************************************************
 * End: terminate video thread output method