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[vlc] / src / video_output / video_x11.c
index 61388b39e128934654fcd6b2db3218bf0eacefbd..e653c6c49f56cd3b872c31b56bd390d752630358 100644 (file)
@@ -1,11 +1,11 @@
-/*******************************************************************************
+/*****************************************************************************
  * vout_x11.c: X11 video output display method
  * (c)1998 VideoLAN
- *******************************************************************************/
+ *****************************************************************************/
 
-/*******************************************************************************
+/*****************************************************************************
  * Preamble
- *******************************************************************************/
+ *****************************************************************************/
 
 #include <errno.h>
 #include <stdlib.h>
 #include "video_yuv.h"
 #include "intf_msg.h"
 
-/*******************************************************************************
+/*****************************************************************************
  * vout_sys_t: video output X11 method descriptor
- *******************************************************************************
+ *****************************************************************************
  * This structure is part of the video output thread descriptor.
- * It describes the X11 specific properties of an output thread. X11 video 
+ * It describes the X11 specific properties of an output thread. X11 video
  * output is performed through regular resizable windows. Windows can be
  * dynamically resized to adapt to the size of the streams.
- *******************************************************************************/
+ *****************************************************************************/
 typedef struct vout_sys_s
 {
     /* User settings */
@@ -43,15 +43,15 @@ typedef struct vout_sys_s
 
     /* Internal settings and properties */
     Display *           p_display;                        /* display pointer */
-    Visual *            p_visual;                          /* visual pointer */    
+    Visual *            p_visual;                          /* visual pointer */
     int                 i_screen;                           /* screen number */
     Window              root_window;                          /* root window */
     Window              window;                   /* window instance handler */
-    GC                  gc;              /* graphic context instance handler */    
+    GC                  gc;              /* graphic context instance handler */
     Colormap            colormap;               /* colormap used (8bpp only) */
 
     /* Display buffers and shared memory information */
-    XImage *            p_ximage[2];                       /* XImage pointer */   
+    XImage *            p_ximage[2];                       /* XImage pointer */
     XShmSegmentInfo     shm_info[2];       /* shared memory zone information */
 } vout_sys_t;
 
@@ -64,27 +64,27 @@ static int  X11CreateWindow     ( vout_thread_t *p_vout );
 static void X11DestroyWindow    ( vout_thread_t *p_vout );
 static int  X11CreateImage      ( vout_thread_t *p_vout, XImage **pp_ximage );
 static void X11DestroyImage     ( XImage *p_ximage );
-static int  X11CreateShmImage   ( vout_thread_t *p_vout, XImage **pp_ximage, 
+static int  X11CreateShmImage   ( vout_thread_t *p_vout, XImage **pp_ximage,
                                   XShmSegmentInfo *p_shm_info );
-static void X11DestroyShmImage  ( vout_thread_t *p_vout, XImage *p_ximage, 
+static void X11DestroyShmImage  ( vout_thread_t *p_vout, XImage *p_ximage,
                                   XShmSegmentInfo *p_shm_info );
 
-/*******************************************************************************
+/*****************************************************************************
  * vout_SysCreate: allocate X11 video thread output method
- *******************************************************************************
+ *****************************************************************************
  * This function allocate and initialize a X11 vout method. It uses some of the
  * vout properties to choose the window size, and change them according to the
  * actual properties of the display.
- *******************************************************************************/
+ *****************************************************************************/
 int vout_SysCreate( vout_thread_t *p_vout, char *psz_display, int i_root_window )
 {
     /* Allocate structure */
-    p_vout->p_sys = malloc( sizeof( vout_sys_t ) );    
+    p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
     if( p_vout->p_sys == NULL )
-    {   
-        intf_ErrMsg("error: %s\n", strerror(ENOMEM) );        
-        return( 1 );        
-    }    
+    {
+        intf_ErrMsg("error: %s\n", strerror(ENOMEM) );
+        return( 1 );
+    }
 
     /* Open and initialize device. This function issues its own error messages.
      * Since XLib is usually not thread-safe, we can't use the same display
@@ -94,42 +94,42 @@ int vout_SysCreate( vout_thread_t *p_vout, char *psz_display, int i_root_window
     {
         intf_ErrMsg("error: can't initialize X11 display\n" );
         free( p_vout->p_sys );
-        return( 1 );               
+        return( 1 );
     }
 
     return( 0 );
 }
 
-/*******************************************************************************
+/*****************************************************************************
  * vout_SysInit: initialize X11 video thread output method
- *******************************************************************************
+ *****************************************************************************
  * This function create the XImages needed by the output thread. It is called
  * at the beginning of the thread, but also each time the window is resized.
- *******************************************************************************/
+ *****************************************************************************/
 int vout_SysInit( vout_thread_t *p_vout )
-{ 
+{
     int i_err;
 
-    /* Create XImages using XShm extension - on failure, fall back to regular 
+    /* Create XImages using XShm extension - on failure, fall back to regular
      * way (and destroy the first image if it was created successfully) */
     if( p_vout->p_sys->b_shm )
     {
         /* Create first image */
-        i_err = X11CreateShmImage( p_vout, &p_vout->p_sys->p_ximage[0], 
+        i_err = X11CreateShmImage( p_vout, &p_vout->p_sys->p_ximage[0],
                                    &p_vout->p_sys->shm_info[0] );
-        if( !i_err )                           /* first image has been created */
+        if( !i_err )                         /* first image has been created */
         {
             /* Create second image */
-            if( X11CreateShmImage( p_vout, &p_vout->p_sys->p_ximage[1], 
+            if( X11CreateShmImage( p_vout, &p_vout->p_sys->p_ximage[1],
                                    &p_vout->p_sys->shm_info[1] ) )
-            {                               /* error creating the second image */
-                X11DestroyShmImage( p_vout, p_vout->p_sys->p_ximage[0], 
+            {                             /* error creating the second image */
+                X11DestroyShmImage( p_vout, p_vout->p_sys->p_ximage[0],
                                     &p_vout->p_sys->shm_info[0] );
                 i_err = 1;
             }
         }
-        if( i_err )                                        /* an error occured */
-        {                        
+        if( i_err )                                      /* an error occured */
+        {
             intf_Msg("XShm video sextension desactivated\n" );
             p_vout->p_sys->b_shm = 0;
         }
@@ -156,25 +156,25 @@ int vout_SysInit( vout_thread_t *p_vout )
     }
 
     /* Set bytes per line and initialize buffers */
-    p_vout->i_bytes_per_line = p_vout->p_sys->p_ximage[0]->bytes_per_line;    
-    vout_SetBuffers( p_vout, p_vout->p_sys->p_ximage[ 0 ]->data, 
+    p_vout->i_bytes_per_line = p_vout->p_sys->p_ximage[0]->bytes_per_line;
+    vout_SetBuffers( p_vout, p_vout->p_sys->p_ximage[ 0 ]->data,
                      p_vout->p_sys->p_ximage[ 1 ]->data );
     return( 0 );
 }
 
-/*******************************************************************************
+/*****************************************************************************
  * vout_SysEnd: terminate X11 video thread output method
- *******************************************************************************
- * Destroy the X11 XImages created by vout_SysInit. It is called at the end of 
+ *****************************************************************************
+ * Destroy the X11 XImages created by vout_SysInit. It is called at the end of
  * the thread, but also each time the window is resized.
- *******************************************************************************/
+ *****************************************************************************/
 void vout_SysEnd( vout_thread_t *p_vout )
 {
-    if( p_vout->p_sys->b_shm )                              /* Shm XImages... */
+    if( p_vout->p_sys->b_shm )                             /* Shm XImages... */
     {
-        X11DestroyShmImage( p_vout, p_vout->p_sys->p_ximage[0], 
+        X11DestroyShmImage( p_vout, p_vout->p_sys->p_ximage[0],
                             &p_vout->p_sys->shm_info[0] );
-        X11DestroyShmImage( p_vout, p_vout->p_sys->p_ximage[1], 
+        X11DestroyShmImage( p_vout, p_vout->p_sys->p_ximage[1],
                             &p_vout->p_sys->shm_info[1] );
     }
     else                                          /* ...or regular XImages */
@@ -184,24 +184,24 @@ void vout_SysEnd( vout_thread_t *p_vout )
     }
 }
 
-/*******************************************************************************
+/*****************************************************************************
  * vout_SysDestroy: destroy X11 video thread output method
- *******************************************************************************
+ *****************************************************************************
  * Terminate an output method created by vout_X11CreateOutputMethod
- *******************************************************************************/
+ *****************************************************************************/
 void vout_SysDestroy( vout_thread_t *p_vout )
 {
     X11CloseDisplay( p_vout );
     free( p_vout->p_sys );
 }
 
-/*******************************************************************************
+/*****************************************************************************
  * vout_SysManage: handle X11 events
- *******************************************************************************
+ *****************************************************************************
  * This function should be called regularly by video output thread. It manages
- * X11 events and allows window resizing. It returns a non null value on 
+ * X11 events and allows window resizing. It returns a non null value on
  * error.
- *******************************************************************************/
+ *****************************************************************************/
 int vout_SysManage( vout_thread_t *p_vout )
 {
     /*
@@ -212,17 +212,17 @@ int vout_SysManage( vout_thread_t *p_vout )
         //??
         //?? clear flags
     }
-    
+
     /*
      * Size change
      */
     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
-    {        
-        intf_DbgMsg("resizing window\n");      
-        p_vout->i_changes &= ~VOUT_SIZE_CHANGE;       
+    {
+        intf_DbgMsg("resizing window\n");
+        p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 
         /* Resize window */
-        XResizeWindow( p_vout->p_sys->p_display, p_vout->p_sys->window, 
+        XResizeWindow( p_vout->p_sys->p_display, p_vout->p_sys->window,
                        p_vout->i_width, p_vout->i_height );
 
         /* Destroy XImages to change their size */
@@ -232,7 +232,7 @@ int vout_SysManage( vout_thread_t *p_vout )
         if( vout_SysInit( p_vout ) )
         {
             intf_ErrMsg("error: can't resize display\n");
-            return( 1 );            
+            return( 1 );
         }
 
         /* Tell the video output thread that it will need to rebuild YUV
@@ -240,36 +240,36 @@ int vout_SysManage( vout_thread_t *p_vout )
         p_vout->i_changes |= VOUT_YUV_CHANGE;
         intf_Msg("Video display resized (%dx%d)\n", p_vout->i_width, p_vout->i_height);
     }
-    
+
     return 0;
 }
 
-/*******************************************************************************
+/*****************************************************************************
  * vout_SysDisplay: displays previously rendered output
- *******************************************************************************
+ *****************************************************************************
  * This function send the currently rendered image to X11 server, wait until
  * it is displayed and switch the two rendering buffer, preparing next frame.
- *******************************************************************************/
+ *****************************************************************************/
 void vout_SysDisplay( vout_thread_t *p_vout )
 {
-    if( p_vout->p_sys->b_shm)                                  /* XShm is used */
+    if( p_vout->p_sys->b_shm)                                /* XShm is used */
     {
         /* Display rendered image using shared memory extension */
-        XShmPutImage(p_vout->p_sys->p_display, p_vout->p_sys->window, p_vout->p_sys->gc, 
-                     p_vout->p_sys->p_ximage[ p_vout->i_buffer_index ], 
-                     0, 0, 0, 0,  
-                     p_vout->p_sys->p_ximage[ p_vout->i_buffer_index ]->width,  
+        XShmPutImage(p_vout->p_sys->p_display, p_vout->p_sys->window, p_vout->p_sys->gc,
+                     p_vout->p_sys->p_ximage[ p_vout->i_buffer_index ],
+                     0, 0, 0, 0,
+                     p_vout->p_sys->p_ximage[ p_vout->i_buffer_index ]->width,
                      p_vout->p_sys->p_ximage[ p_vout->i_buffer_index ]->height, True);
 
         /* Send the order to the X server */
         XFlush(p_vout->p_sys->p_display);
     }
-    else                                  /* regular X11 capabilities are used */
+    else                                /* regular X11 capabilities are used */
     {
-        XPutImage(p_vout->p_sys->p_display, p_vout->p_sys->window, p_vout->p_sys->gc, 
-                  p_vout->p_sys->p_ximage[ p_vout->i_buffer_index ], 
-                  0, 0, 0, 0,  
-                  p_vout->p_sys->p_ximage[ p_vout->i_buffer_index ]->width,  
+        XPutImage(p_vout->p_sys->p_display, p_vout->p_sys->window, p_vout->p_sys->gc,
+                  p_vout->p_sys->p_ximage[ p_vout->i_buffer_index ],
+                  0, 0, 0, 0,
+                  p_vout->p_sys->p_ximage[ p_vout->i_buffer_index ]->width,
                   p_vout->p_sys->p_ximage[ p_vout->i_buffer_index ]->height);
 
         /* Send the order to the X server */
@@ -280,24 +280,24 @@ void vout_SysDisplay( vout_thread_t *p_vout )
 /* following functions are local */
 
 /*****************************************************************************
- * X11OpenDisplay: open and initialize X11 device 
+ * X11OpenDisplay: open and initialize X11 device
  *****************************************************************************
- * Create a window according to video output given size, and set other 
+ * Create a window according to video output given size, and set other
  * properties according to the display properties.
  *****************************************************************************/
 static int X11OpenDisplay( vout_thread_t *p_vout, char *psz_display, Window root_window )
 {
-    XPixmapFormatValues *       p_xpixmap_format;           /* pixmap formats */    
-    XVisualInfo *               p_xvisual;            /* visuals informations */
-    XVisualInfo                 xvisual_template;          /* visual template */
-    int                         i_count;                        /* array size */    
+    XPixmapFormatValues *       p_xpixmap_format;          /* pixmap formats */
+    XVisualInfo *               p_xvisual;           /* visuals informations */
+    XVisualInfo                 xvisual_template;         /* visual template */
+    int                         i_count;                       /* array size */
 
     /* Open display */
     p_vout->p_sys->p_display = XOpenDisplay( psz_display );
     if( p_vout->p_sys->p_display == NULL )
     {
-        intf_ErrMsg("error: can't open display %s\n", psz_display );        
-        return( 1 );        
+        intf_ErrMsg("error: can't open display %s\n", psz_display );
+        return( 1 );
     }
 
     /* Initialize structure */
@@ -305,12 +305,12 @@ static int X11OpenDisplay( vout_thread_t *p_vout, char *psz_display, Window root
     p_vout->p_sys->b_shm        = (XShmQueryExtension(p_vout->p_sys->p_display) == True);
     p_vout->p_sys->i_screen     = DefaultScreen( p_vout->p_sys->p_display );
     if( !p_vout->p_sys->b_shm )
-    {        
-        intf_Msg("XShm video extension is not available\n");    
-    }    
+    {
+        intf_Msg("XShm video extension is not available\n");
+    }
 
     /* Get screen depth */
-    p_vout->i_screen_depth = XDefaultDepth( p_vout->p_sys->p_display, p_vout->p_sys->i_screen );    
+    p_vout->i_screen_depth = XDefaultDepth( p_vout->p_sys->p_display, p_vout->p_sys->i_screen );
     switch( p_vout->i_screen_depth )
     {
     case 8:
@@ -319,49 +319,49 @@ static int X11OpenDisplay( vout_thread_t *p_vout, char *psz_display, Window root
          */
         xvisual_template.screen =   p_vout->p_sys->i_screen;
         xvisual_template.class =    DirectColor;
-        p_xvisual = XGetVisualInfo( p_vout->p_sys->p_display, VisualScreenMask | VisualClassMask, 
+        p_xvisual = XGetVisualInfo( p_vout->p_sys->p_display, VisualScreenMask | VisualClassMask,
                                     &xvisual_template, &i_count );
         if( p_xvisual == NULL )
         {
             intf_ErrMsg("error: no PseudoColor visual available\n");
             XCloseDisplay( p_vout->p_sys->p_display );
-            return( 1 );        
+            return( 1 );
         }
         //??
         //?? SetColormap;
-        p_vout->i_bytes_per_pixel = 1;        
+        p_vout->i_bytes_per_pixel = 1;
         break;
     case 15:
     case 16:
     case 24:
-    default:        
+    default:
         /*
          * Screen depth is higher than 8bpp. TrueColor visual is used.
          */
         xvisual_template.screen =   p_vout->p_sys->i_screen;
         xvisual_template.class =    TrueColor;
-        p_xvisual = XGetVisualInfo( p_vout->p_sys->p_display, VisualScreenMask | VisualClassMask, 
+        p_xvisual = XGetVisualInfo( p_vout->p_sys->p_display, VisualScreenMask | VisualClassMask,
                                     &xvisual_template, &i_count );
         if( p_xvisual == NULL )
         {
             intf_ErrMsg("error: no TrueColor visual available\n");
             XCloseDisplay( p_vout->p_sys->p_display );
-            return( 1 );        
+            return( 1 );
         }
         p_vout->i_red_mask =        p_xvisual->red_mask;
         p_vout->i_green_mask =      p_xvisual->green_mask;
         p_vout->i_blue_mask =       p_xvisual->blue_mask;
 
         /* There is no difference yet between 3 and 4 Bpp. The only way to find
-         * the actual number of bytes per pixel is to list supported pixmap 
+         * the actual number of bytes per pixel is to list supported pixmap
          * formats. */
         p_xpixmap_format = XListPixmapFormats( p_vout->p_sys->p_display, &i_count );
-        p_vout->i_bytes_per_pixel = 0;        
+        p_vout->i_bytes_per_pixel = 0;
         for( ; i_count--; p_xpixmap_format++ )
         {
             if( p_xpixmap_format->bits_per_pixel / 8 > p_vout->i_bytes_per_pixel )
             {
-                p_vout->i_bytes_per_pixel = p_xpixmap_format->bits_per_pixel / 8;                
+                p_vout->i_bytes_per_pixel = p_xpixmap_format->bits_per_pixel / 8;
             }
         }
         break;
@@ -372,19 +372,19 @@ static int X11OpenDisplay( vout_thread_t *p_vout, char *psz_display, Window root
     /* Create a window */
     if( X11CreateWindow( p_vout ) )
     {
-        intf_ErrMsg("error: can't open a window\n");        
-        XCloseDisplay( p_vout->p_sys->p_display );        
+        intf_ErrMsg("error: can't open a window\n");
+        XCloseDisplay( p_vout->p_sys->p_display );
         return( 1 );
     }
-    return( 0 );    
+    return( 0 );
 }
 
-/*******************************************************************************
- * X11CloseDisplay: close X11 device 
- *******************************************************************************
+/*****************************************************************************
+ * X11CloseDisplay: close X11 device
+ *****************************************************************************
  * Returns all resources allocated by X11OpenDisplay and restore the original
  * state of the display.
- *******************************************************************************/
+ *****************************************************************************/
 static void X11CloseDisplay( vout_thread_t *p_vout )
 {
     /* Destroy colormap */
@@ -395,42 +395,42 @@ static void X11CloseDisplay( vout_thread_t *p_vout )
 
     /* Destroy window and close display */
     X11DestroyWindow( p_vout );
-    XCloseDisplay( p_vout->p_sys->p_display );    
+    XCloseDisplay( p_vout->p_sys->p_display );
 }
 
-/******************************************************************************
+/*****************************************************************************
  * X11CreateWindow: create X11 vout window
- ******************************************************************************
- * The video output window will be created. Normally, this window is wether 
- * full screen or part of a parent window. Therefore, it does not need a 
+ *****************************************************************************
+ * The video output window will be created. Normally, this window is wether
+ * full screen or part of a parent window. Therefore, it does not need a
  * title or other hints. Thery are still supplied in case the window would be
  * spawned as a standalone one by the interface.
- ******************************************************************************/
+ *****************************************************************************/
 static int X11CreateWindow( vout_thread_t *p_vout )
 {
-    XSetWindowAttributes    xwindow_attributes;          /* window attributes */
-    XGCValues               xgcvalues;       /* graphic context configuration */
-    XEvent                  xevent;                           /* first events */
-    boolean_t               b_expose;              /* 'expose' event received */
-    boolean_t               b_map_notify;      /* 'map_notify' event received */
+    XSetWindowAttributes    xwindow_attributes;         /* window attributes */
+    XGCValues               xgcvalues;      /* graphic context configuration */
+    XEvent                  xevent;                          /* first events */
+    boolean_t               b_expose;             /* 'expose' event received */
+    boolean_t               b_map_notify;     /* 'map_notify' event received */
 
     /* Prepare window attributes */
-    xwindow_attributes.backing_store = Always;        /* save the hidden part */
+    xwindow_attributes.backing_store = Always;       /* save the hidden part */
+
     /* Create the window and set hints */
     p_vout->p_sys->window = XCreateSimpleWindow( p_vout->p_sys->p_display,
                                                 p_vout->p_sys->root_window,
-                                                0, 0, 
+                                                0, 0,
                                                 p_vout->i_width, p_vout->i_height,
                                                 0, 0, 0);
-    XSelectInput( p_vout->p_sys->p_display, p_vout->p_sys->window, 
+    XSelectInput( p_vout->p_sys->p_display, p_vout->p_sys->window,
                   ExposureMask | StructureNotifyMask );
-    XChangeWindowAttributes( p_vout->p_sys->p_display, p_vout->p_sys->window, 
+    XChangeWindowAttributes( p_vout->p_sys->p_display, p_vout->p_sys->window,
                              CWBackingStore, &xwindow_attributes);
 
     /* Creation of a graphic context that doesn't generate a GraphicsExpose event
        when using functions like XCopyArea */
-    xgcvalues.graphics_exposures = False;    
+    xgcvalues.graphics_exposures = False;
     p_vout->p_sys->gc =  XCreateGC( p_vout->p_sys->p_display, p_vout->p_sys->window,
                                     GCGraphicsExposures, &xgcvalues);
 
@@ -443,12 +443,12 @@ static int X11CreateWindow( vout_thread_t *p_vout )
     do
     {
         XNextEvent( p_vout->p_sys->p_display, &xevent);
-        if( (xevent.type == Expose) 
+        if( (xevent.type == Expose)
             && (xevent.xexpose.window == p_vout->p_sys->window) )
         {
             b_expose = 1;
         }
-        else if( (xevent.type == MapNotify) 
+        else if( (xevent.type == MapNotify)
                  && (xevent.xmap.window == p_vout->p_sys->window) )
         {
             b_map_notify = 1;
@@ -457,16 +457,16 @@ static int X11CreateWindow( vout_thread_t *p_vout )
     while( !( b_expose && b_map_notify ) );
     XSelectInput( p_vout->p_sys->p_display, p_vout->p_sys->window, 0 );
 
-    /* At this stage, the window is openned, displayed, and ready to receive 
+    /* At this stage, the window is openned, displayed, and ready to receive
      * data */
     return( 0 );
 }
 
-/*******************************************************************************
+/*****************************************************************************
  * X11DestroyWindow: destroy X11 window
- *******************************************************************************
+ *****************************************************************************
  * Destroy an X11 window created by vout_X11CreateWindow
- *******************************************************************************/
+ *****************************************************************************/
 static void X11DestroyWindow( vout_thread_t *p_vout )
 {
     XUnmapWindow( p_vout->p_sys->p_display, p_vout->p_sys->window );
@@ -474,23 +474,23 @@ static void X11DestroyWindow( vout_thread_t *p_vout )
     XDestroyWindow( p_vout->p_sys->p_display, p_vout->p_sys->window );
 }
 
-/*******************************************************************************
- * X11CreateImage: create an XImage                                      
- *******************************************************************************
+/*****************************************************************************
+ * X11CreateImage: create an XImage
+ *****************************************************************************
  * Create a simple XImage used as a buffer.
- *******************************************************************************/
+ *****************************************************************************/
 static int X11CreateImage( vout_thread_t *p_vout, XImage **pp_ximage )
 {
-    byte_t *    pb_data;                           /* image data storage zone */
-    int         i_quantum;                      /* XImage quantum (see below) */
-  
+    byte_t *    pb_data;                          /* image data storage zone */
+    int         i_quantum;                     /* XImage quantum (see below) */
+
     /* Allocate memory for image */
-    p_vout->i_bytes_per_line = p_vout->i_width * p_vout->i_bytes_per_pixel;    
+    p_vout->i_bytes_per_line = p_vout->i_width * p_vout->i_bytes_per_pixel;
     pb_data = (byte_t *) malloc( p_vout->i_bytes_per_line * p_vout->i_height );
-    if( !pb_data )                                                   /* error */
+    if( !pb_data )                                                  /* error */
     {
         intf_ErrMsg("error: %s\n", strerror(ENOMEM));
-        return( 1 );   
+        return( 1 );
     }
 
     /* Optimize the quantum of a scanline regarding its size - the quantum is
@@ -499,7 +499,7 @@ static int X11CreateImage( vout_thread_t *p_vout, XImage **pp_ximage )
     {
         i_quantum = 32;
     }
-    else    
+    else
     {
         if( !(( p_vout->i_bytes_per_line ) % 16) )
         {
@@ -510,12 +510,12 @@ static int X11CreateImage( vout_thread_t *p_vout, XImage **pp_ximage )
             i_quantum = 8;
         }
     }
-    
+
     /* Create XImage */
     *pp_ximage = XCreateImage( p_vout->p_sys->p_display, p_vout->p_sys->p_visual,
-                               p_vout->i_screen_depth, ZPixmap, 0, pb_data, 
+                               p_vout->i_screen_depth, ZPixmap, 0, pb_data,
                                p_vout->i_width, p_vout->i_height, i_quantum, 0);
-    if(! *pp_ximage )                                                 /* error */
+    if(! *pp_ximage )                                               /* error */
     {
         intf_ErrMsg( "error: XCreateImage() failed\n" );
         free( pb_data );
@@ -525,22 +525,22 @@ static int X11CreateImage( vout_thread_t *p_vout, XImage **pp_ximage )
     return 0;
 }
 
-/*******************************************************************************
+/*****************************************************************************
  * X11CreateShmImage: create an XImage using shared memory extension
- *******************************************************************************
+ *****************************************************************************
  * Prepare an XImage for DisplayX11ShmImage function.
- * The order of the operations respects the recommandations of the mit-shm 
- * document by J.Corbet and K.Packard. Most of the parameters were copied from 
+ * The order of the operations respects the recommandations of the mit-shm
+ * document by J.Corbet and K.Packard. Most of the parameters were copied from
  * there.
- *******************************************************************************/
-static int X11CreateShmImage( vout_thread_t *p_vout, XImage **pp_ximage, 
+ *****************************************************************************/
+static int X11CreateShmImage( vout_thread_t *p_vout, XImage **pp_ximage,
                               XShmSegmentInfo *p_shm_info)
 {
     /* Create XImage */
-    *pp_ximage = XShmCreateImage( p_vout->p_sys->p_display, p_vout->p_sys->p_visual, 
-                                  p_vout->i_screen_depth, ZPixmap, 0, 
+    *pp_ximage = XShmCreateImage( p_vout->p_sys->p_display, p_vout->p_sys->p_visual,
+                                  p_vout->i_screen_depth, ZPixmap, 0,
                                   p_shm_info, p_vout->i_width, p_vout->i_height );
-    if(! *pp_ximage )                                                 /* error */
+    if(! *pp_ximage )                                               /* error */
     {
         intf_ErrMsg("error: XShmCreateImage() failed\n");
         return( 1 );
@@ -548,10 +548,10 @@ static int X11CreateShmImage( vout_thread_t *p_vout, XImage **pp_ximage,
 
     /* Allocate shared memory segment - 0777 set the access permission
      * rights (like umask), they are not yet supported by X servers */
-    p_shm_info->shmid = shmget( IPC_PRIVATE, 
-                                (*pp_ximage)->bytes_per_line * (*pp_ximage)->height, 
+    p_shm_info->shmid = shmget( IPC_PRIVATE,
+                                (*pp_ximage)->bytes_per_line * (*pp_ximage)->height,
                                 IPC_CREAT | 0777);
-    if( p_shm_info->shmid < 0)                                        /* error */
+    if( p_shm_info->shmid < 0)                                      /* error */
     {
         intf_ErrMsg("error: can't allocate shared image data (%s)\n",
                     strerror(errno));
@@ -562,10 +562,10 @@ static int X11CreateShmImage( vout_thread_t *p_vout, XImage **pp_ximage,
     /* Attach shared memory segment to process (read/write) */
     p_shm_info->shmaddr = (*pp_ximage)->data = shmat(p_shm_info->shmid, 0, 0);
     if(! p_shm_info->shmaddr )
-    {                                                                 /* error */
+    {                                                               /* error */
         intf_ErrMsg("error: can't attach shared memory (%s)\n",
                     strerror(errno));
-        shmctl( p_shm_info->shmid, IPC_RMID, 0 );        /* free shared memory */
+        shmctl( p_shm_info->shmid, IPC_RMID, 0 );      /* free shared memory */
         XDestroyImage( *pp_ximage );
         return( 1 );
     }
@@ -585,34 +585,34 @@ static int X11CreateShmImage( vout_thread_t *p_vout, XImage **pp_ximage,
         return( 1 );
     }
 
-    /* Send image to X server. This instruction is required, since having 
+    /* Send image to X server. This instruction is required, since having
      * built a Shm XImage and not using it causes an error on XCloseDisplay */
-    XFlush( p_vout->p_sys->p_display );    
+    XFlush( p_vout->p_sys->p_display );
     return( 0 );
 }
 
-/*******************************************************************************
- * X11DestroyImage: destroy an XImage                                  
- *******************************************************************************
+/*****************************************************************************
+ * X11DestroyImage: destroy an XImage
+ *****************************************************************************
  * Destroy XImage AND associated data. If pointer is NULL, the image won't be
  * destroyed (see vout_X11ManageOutputMethod())
- *******************************************************************************/
+ *****************************************************************************/
 static void X11DestroyImage( XImage *p_ximage )
 {
     if( p_ximage != NULL )
     {
-        XDestroyImage( p_ximage );                       /* no free() required */
+        XDestroyImage( p_ximage );                     /* no free() required */
     }
 }
 
-/*******************************************************************************
- * X11DestroyShmImage                                                    
- *******************************************************************************
+/*****************************************************************************
+ * X11DestroyShmImage
+ *****************************************************************************
  * Destroy XImage AND associated data. Detach shared memory segment from
  * server and process, then free it. If pointer is NULL, the image won't be
- * destroyed (see vout_X11ManageOutputMethod()) 
- *******************************************************************************/
-static void X11DestroyShmImage( vout_thread_t *p_vout, XImage *p_ximage, 
+ * destroyed (see vout_X11ManageOutputMethod())
+ *****************************************************************************/
+static void X11DestroyShmImage( vout_thread_t *p_vout, XImage *p_ximage,
                                 XShmSegmentInfo *p_shm_info )
 {
     /* If pointer is NULL, do nothing */
@@ -623,9 +623,9 @@ static void X11DestroyShmImage( vout_thread_t *p_vout, XImage *p_ximage,
 
     XShmDetach( p_vout->p_sys->p_display, p_shm_info );     /* detach from server */
     XDestroyImage( p_ximage );
-    if( shmdt( p_shm_info->shmaddr ) )    /* detach shared memory from process */
-    {                                     /* also automatic freeing...         */
-        intf_ErrMsg("error: can't detach shared memory (%s)\n", 
+    if( shmdt( p_shm_info->shmaddr ) )  /* detach shared memory from process */
+    {                                   /* also automatic freeing...         */
+        intf_ErrMsg("error: can't detach shared memory (%s)\n",
                     strerror(errno));
     }
 }