added updated 16bpp patch that handles 555 BRG and does bit of inlining

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@1595 311d38ba-8fff-0310-9ca6-ca027cbcb966

1 files changed, 258 insertions, 0 deletions

diff --git a/meta/packages/libmatchbox/files/16bppfixes-2.patch b/meta/packages/libmatchbox/files/16bppfixes-2.patch
new file mode 100644
index 00000000000..ab9cdc74a5b
--- /dev/null
+++ b/meta/packages/libmatchbox/files/16bppfixes-2.patch
@@ -0,0 +1,258 @@
+--- libmatchbox/libmb/mbpixbuf.c.orig	2007-05-04 14:41:55.000000000 +0100
++++ libmatchbox/libmb/mbpixbuf.c	2007-05-04 14:41:55.000000000 +0100
+@@ -710,46 +710,19 @@
+   return colnum;
+ }
+ 
+-
+-static unsigned long
+-mb_pixbuf_get_pixel(MBPixbuf *pb, int r, int g, int b, int a)
++/*
++ * Split the mb_pixbuf_get_pixel() function into several specialized
++ * functions which we will inline; this allows us to optimize
++ * mb_pixbuf_img_render_to_drawable_with_gc () by taking some of the
++ * decision taking outside of the double loop
++ */
++
++/*
++ * Get pixel value for rgb values and pixel depth <= 8
++ */
++static inline unsigned long
++mb_pixbuf_get_pixel_le8_rgb (MBPixbuf *pb, int r, int g, int b)
+ {
+-  if (pb->depth > 8)
+-    {
+-      switch (pb->depth)
+-	{
+-	case 15:
+-	  return ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
+-	case 16:
+-	  return ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
+-	case 24:
+-	case 32:
+-	  switch (pb->byte_order)
+-	    {
+-	    case BYTE_ORD_24_RGB:
+-	      return ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff);
+-	    case BYTE_ORD_24_RBG:
+-	      return ((r & 0xff) << 16) | ((b & 0xff) << 8) | (g & 0xff);
+-	    case BYTE_ORD_24_BRG:
+-	      return ((b & 0xff) << 16) | ((r & 0xff) << 8) | (g & 0xff);
+-	    case BYTE_ORD_24_BGR:
+-	      return ((b & 0xff) << 16) | ((g & 0xff) << 8) | (r & 0xff);
+-	    case BYTE_ORD_24_GRB:
+-	      return ((g & 0xff) << 16) | ((r & 0xff) << 8) | (b & 0xff);
+-	    case BYTE_ORD_24_GBR:
+-	      return ((g & 0xff) << 16) | ((b & 0xff) << 8) | (r & 0xff);
+-	    case BYTE_ORD_32_ARGB:
+-	      return  (a << 24) | (r << 16) | (g << 8) | b;
+-	    default:
+-	      return 0;
+-	    }
+-	default:
+-	  return 0;
+-	}
+-      return 0;
+-    }
+-
+-  /* pb->depth <= 8 */
+   switch(pb->vis->class)
+     {
+     case PseudoColor:
+@@ -794,6 +767,111 @@
+   return 0;
+ }
+ 
++/*
++ * Get pixel value from a pointer to 16bbp value for pixel depth <= 8
++ * and advance the pointer
++ */
++static inline unsigned long
++mb_pixbuf_get_pixel_le8_16bpp_advance (MBPixbuf *pb, unsigned char ** p)
++{
++  unsigned short s = SHORT_FROM_2BYTES(*p);
++  int r, b, g;
++
++  r = (s & 0xf800) >> 8;
++  g = (s & 0x07e0) >> 3;
++  b = (s & 0x001f) << 3;
++
++  *p += 2;
++  
++  return mb_pixbuf_get_pixel_le8_rgb (pb, r, g, b);
++}
++
++/*
++ * Get pixel value for rgba values and pixel depth > 8
++ *
++ */
++static inline unsigned long
++mb_pixbuf_get_pixel_gt8_rgba (MBPixbuf *pb, int r, int g, int b, int a)
++{
++  switch (pb->depth)
++    {
++    case 15:
++      switch (pb->byte_order)
++	{
++	case BYTE_ORD_24_RGB:
++	  return ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
++	case BYTE_ORD_24_BGR:
++	  return ((b & 0xf8) << 7) | ((g & 0xf8) << 2) | ((r & 0xf8) >> 3);
++	}
++    case 16:
++      switch (pb->byte_order)
++	{
++	case BYTE_ORD_24_RGB:
++	  return ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
++	case BYTE_ORD_24_BGR:
++	  return ((b & 0xf8) << 8) | ((g & 0xfc) << 3) | ((r & 0xf8) >> 3);
++	}
++    case 24:
++    case 32:
++      switch (pb->byte_order)
++	{
++	case BYTE_ORD_24_RGB:
++	  return ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff);
++	case BYTE_ORD_24_RBG:
++	  return ((r & 0xff) << 16) | ((b & 0xff) << 8) | (g & 0xff);
++	case BYTE_ORD_24_BRG:
++	  return ((b & 0xff) << 16) | ((r & 0xff) << 8) | (g & 0xff);
++	case BYTE_ORD_24_BGR:
++	  return ((b & 0xff) << 16) | ((g & 0xff) << 8) | (r & 0xff);
++	case BYTE_ORD_24_GRB:
++	  return ((g & 0xff) << 16) | ((r & 0xff) << 8) | (b & 0xff);
++	case BYTE_ORD_24_GBR:
++	  return ((g & 0xff) << 16) | ((b & 0xff) << 8) | (r & 0xff);
++	case BYTE_ORD_32_ARGB:
++	  return  (a << 24) | (r << 16) | (g << 8) | b;
++	default:
++	  return 0;
++	}
++    default:
++      return 0;
++    }
++}
++
++/*
++ * Get pixel value from pointer to 16bpp data for pixel depth > 8
++ * and advance the pointer
++ *
++ * TODO ? We could take the 32bit case out of here, which would allow
++ * to ignore the alpha value for <15, 24>, but we might not gain that
++ * much by this on arm due to the conditional execution.
++ */
++static inline unsigned long
++mb_pixbuf_get_pixel_gt8_16bpp_advance (MBPixbuf *pb, unsigned char ** p,
++				       int has_alpha)
++{
++  unsigned short s = SHORT_FROM_2BYTES(*p);
++  int r, b, g, a;
++
++  r = (s & 0xf800) >> 8;
++  g = (s & 0x07e0) >> 3;
++  b = (s & 0x001f) << 3;
++
++  *p += 2;
++  
++  a = has_alpha ?  *(*p)++ : 0xff;
++
++  return mb_pixbuf_get_pixel_gt8_rgba (pb, r, g, b, a);
++}
++
++static inline unsigned long
++mb_pixbuf_get_pixel(MBPixbuf *pb, int r, int g, int b, int a)
++{
++  if (pb->depth > 8)
++    return mb_pixbuf_get_pixel_gt8_rgba (pb, r, g, b, a);
++
++  return mb_pixbuf_get_pixel_le8_rgb (pb, r, g, b);
++}
++
+ unsigned long
+ mb_pixbuf_lookup_x_pixel(MBPixbuf *pb, int r, int g, int b, int a)
+ {
+@@ -1825,7 +1903,6 @@
+   mb_pixbuf_img_render_to_drawable_with_gc(pb, img, drw, drw_x, drw_y, pb->gc);
+ }
+ 
+-
+ void
+ mb_pixbuf_img_render_to_drawable_with_gc(MBPixbuf    *pb,
+ 					 MBPixbufImage *img,
+@@ -1883,31 +1960,57 @@
+ 
+       if (pb->internal_bytespp == 2)
+ 	{
+-	  for(y=0; y<img->height; y++)
+-	    for(x=0; x<img->width; x++)
+-	      {
+-		/* Below is potentially dangerous.  
+-		 */
+-		pixel =  ( *p | (*(p+1) << 8)); 
+-
+-		p +=  ((img->has_alpha) ?  3 : 2);
+-		
+-		XPutPixel(img->ximg, x, y, pixel);
+-	      }
++	  if (pb->depth > 8)
++	    {
++	      for(y=0; y<img->height; y++)
++		for(x=0; x<img->width; x++)
++		  {
++		    pixel = mb_pixbuf_get_pixel_gt8_16bpp_advance(pb, &p,
++								  img->has_alpha);
++		    XPutPixel(img->ximg, x, y, pixel);
++		  }
++	    }
++	  else
++	    {
++	      for(y=0; y<img->height; y++)
++		for(x=0; x<img->width; x++)
++		  {
++		    pixel = mb_pixbuf_get_pixel_le8_16bpp_advance(pb, &p);
++		    XPutPixel(img->ximg, x, y, pixel);
++		  }
++	    }
+ 	}
+       else
+ 	{
+-	  for(y=0; y<img->height; y++)
++	  if (pb->depth > 8)
+ 	    {
+-	      for(x=0; x<img->width; x++)
++	      for(y=0; y<img->height; y++)
+ 		{
+-		  r = ( *p++ );
+-		  g = ( *p++ );
+-		  b = ( *p++ );
+-		  a = ((img->has_alpha) ?  *p++ : 0xff);
++		  for(x=0; x<img->width; x++)
++		    {
++		      r = ( *p++ );
++		      g = ( *p++ );
++		      b = ( *p++ );
++		      a = ((img->has_alpha) ?  *p++ : 0xff);
+ 		  
+-		  pixel = mb_pixbuf_get_pixel(pb, r, g, b, a);
+-		  XPutPixel(img->ximg, x, y, pixel);
++		      pixel = mb_pixbuf_get_pixel_gt8_rgba(pb, r, g, b, a);
++		      XPutPixel(img->ximg, x, y, pixel);
++		    }
++		}
++	    }
++	  else
++	    {
++	      for(y=0; y<img->height; y++)
++		{
++		  for(x=0; x<img->width; x++)
++		    {
++		      r = ( *p++ );
++		      g = ( *p++ );
++		      b = ( *p++ );
++		  
++		      pixel = mb_pixbuf_get_pixel_le8_rgb(pb, r, g, b);
++		      XPutPixel(img->ximg, x, y, pixel);
++		    }
+ 		}
+ 	    }
+ 	}