* Small optimization in vpar_blocks.c, sparing a few memset() calls.
  * Additional error checking in vout_sdl.c.
  * Minor manpage fix, conforming to Debian policy version 3.5.5.0
    (Closes Debian bug #99561).

doc/vlc.1

@@ -16,7 +16,7 @@
 .\" .sp <n>    insert n+1 empty lines
 .\" for manpage-specific macros, see man(7)
 .SH NAME
-vlc, gvlc, gnome-vlc, kvlc, qvlc \- The VideoLAN Client
+vlc, gvlc, gnome-vlc, qvlc \- The VideoLAN Client
 .SH SYNOPSIS
 .B vlc
 .RI [ OPTIONS ]

plugins/sdl/vout_sdl.c

@@ -2,7 +2,7 @@
  * vout_sdl.c: SDL video output display method
  *****************************************************************************
  * Copyright (C) 1998, 1999, 2000 VideoLAN
- * $Id: vout_sdl.c,v 1.55 2001/06/07 22:14:56 sam Exp $
+ * $Id: vout_sdl.c,v 1.56 2001/07/06 08:43:31 sam Exp $
  *
  * Authors: Samuel Hocevar <sam@zoy.org>
  *          Pierre Baillet <oct@zoy.org>
@@ -246,6 +246,14 @@ static int vout_Init( vout_thread_t *p_vout )
            main_GetIntVariable( VOUT_HEIGHT_VAR,VOUT_HEIGHT_DEFAULT ),
                                       SDL_YV12_OVERLAY, 
                                       p_vout->p_sys->p_display );
+
+    if( p_overlay == NULL )
+    {
+        intf_ErrMsg( "vout error: could not create SDL overlay" );
+        p_vout->b_need_render = 1;
+        return( 0 );
+    }
+
     intf_WarnMsg( 2, "vout: YUV acceleration %s",
               p_overlay->hw_overlay ? "activated" : "unavailable !" ); 
     p_vout->b_need_render = !p_overlay->hw_overlay;
@@ -537,12 +545,7 @@ static void vout_Display( vout_thread_t *p_vout )
     SDL_Rect    disp;
     if((p_vout->p_sys->p_display != NULL) && !p_vout->p_sys->b_reopen_display)
     {
-        if( p_vout->b_need_render )
-        {  
-            /* Change display frame */
-            SDL_Flip( p_vout->p_sys->p_display );
-        }
-        else
+        if( !p_vout->b_need_render )
         {
             /*
              * p_vout->p_rendered_pic->p_y/u/v contains the YUV buffers to
@@ -558,10 +561,20 @@ static void vout_Display( vout_thread_t *p_vout )
                                              SDL_YV12_OVERLAY, 
                                              p_vout->p_sys->p_display
                                            );
+            }
+
+            if( p_vout->p_sys->p_overlay == NULL )
+            {
+                /* Overlay allocation failed, switch back to software mode */
+                intf_ErrMsg( "vout error: could not create SDL overlay" );
+                p_vout->b_need_render = 1;
+            }
+            else
+            {
+
                 intf_WarnMsg( 2, "vout: YUV acceleration %s",
                               p_vout->p_sys->p_overlay->hw_overlay
                                ? "activated" : "unavailable !" ); 
-            }
     
                 SDL_LockYUVOverlay(p_vout->p_sys->p_overlay);
                 /* copy the data into video buffers */
@@ -581,14 +594,22 @@ static void vout_Display( vout_thread_t *p_vout )
                        p_vout->p_sys->p_overlay->h *
                        p_vout->p_sys->p_overlay->pitches[2] / 2);
     
-            disp.w = (&p_vout->p_buffer[p_vout->i_buffer_index])->i_pic_width;
-            disp.h = (&p_vout->p_buffer[p_vout->i_buffer_index])->i_pic_height;
+#define BUFFER (&p_vout->p_buffer[p_vout->i_buffer_index])
+                disp.w = BUFFER->i_pic_width;
+                disp.h = BUFFER->i_pic_height;
+#undef BUFFER
                 disp.x = (p_vout->i_width - disp.w)/2;
                 disp.y = (p_vout->i_height - disp.h)/2;
     
                 SDL_DisplayYUVOverlay( p_vout->p_sys->p_overlay , &disp );
                 SDL_UnlockYUVOverlay(p_vout->p_sys->p_overlay);
+
+                return;
+            }
         }
+    
+        /* Software YUV: change display frame */
+        SDL_Flip( p_vout->p_sys->p_display );
     }
 }
 

src/video_parser/vpar_blocks.c

@@ -2,7 +2,7 @@
  * vpar_blocks.c : blocks parsing
  *****************************************************************************
  * Copyright (C) 1999, 2000 VideoLAN
- * $Id: vpar_blocks.c,v 1.82 2001/06/18 23:42:07 sam Exp $
+ * $Id: vpar_blocks.c,v 1.83 2001/07/06 08:43:31 sam Exp $
  *
  * Authors: Christophe Massiot <massiot@via.ecp.fr>
  *          Jean-Marc Dressler <polux@via.ecp.fr>
@@ -396,6 +396,14 @@ static dct_lookup_t * ppl_dct_tab1[2] = { pl_DCT_tab_ac, pl_DCT_tab0a };
 
 static dct_lookup_t * ppl_dct_tab2[2] = { pl_DCT_tab_ac, pl_DCT_tab_dc };
 
+/* Replacement for memset( p_table, 0, 8*sizeof( int ) ); */
+static __inline__ void bzero8int( void *p_table )
+{
+    ((int*)p_table)[0] = ((int*)p_table)[1] =
+    ((int*)p_table)[2] = ((int*)p_table)[3] = 
+    ((int*)p_table)[4] = ((int*)p_table)[5] =
+    ((int*)p_table)[6] = ((int*)p_table)[7] = 0;
+}
 
 /*
  * Initialization of lookup tables
@@ -1662,7 +1670,7 @@ static __inline__ void SkippedMacroblock( vpar_thread_t * p_vpar, int i_mb,
     else
     {
         p_mb->i_mb_type = MB_MOTION_FORWARD;
-        memset( p_mb->pppi_motion_vectors, 0, 8*sizeof(int) );
+        bzero8int( p_mb->pppi_motion_vectors );
     }
 
     /* Set the field we use for motion compensation */
@@ -1811,7 +1819,7 @@ static __inline__ void ParseMacroblock(
         if( i_coding_type == P_CODING_TYPE )
         {
             /* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */
-            memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
+            bzero8int( p_vpar->mb.pppi_pmv );
         }
 
         for( i_mb = i_mb_previous + 1; i_mb < *pi_mb_address; i_mb++ )
@@ -1866,8 +1874,8 @@ static __inline__ void ParseMacroblock(
     {
         /* Special No-MC macroblock in P pictures (7.6.3.5). */
         p_mb->i_mb_type |= MB_MOTION_FORWARD;
-        memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
-        memset( p_mb->pppi_motion_vectors, 0, 8*sizeof(int) );
+        bzero8int( p_vpar->mb.pppi_pmv );
+        bzero8int( p_mb->pppi_motion_vectors );
         p_vpar->mb.i_motion_type = 1 + (i_structure == FRAME_STRUCTURE);
         p_mb->ppi_field_select[0][0] = (i_structure == BOTTOM_FIELD);
     }
@@ -1917,7 +1925,7 @@ static __inline__ void ParseMacroblock(
         if( !p_vpar->picture.b_concealment_mv )
         {
             /* Reset MV predictors. */
-            memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
+            bzero8int( p_vpar->mb.pppi_pmv );
         }
         else
         {
@@ -2031,7 +2039,7 @@ static __inline__ void SliceHeader( vpar_thread_t * p_vpar,
         = 1 << (7 + p_vpar->picture.i_intra_dc_precision);
 
     /* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */
-    memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
+    bzero8int( p_vpar->mb.pppi_pmv );
 
     do
     {