Fixed problem with color conversion

Original commit message from CVS:
Fixed problem with color conversion
Added conversion between YV12 and I420

ext/hermes/gstcolorspace.c

@@ -21,6 +21,7 @@
 
 #include "gstcolorspace.h"
 #include "yuv2rgb.h"
+#include "yuv2yuv.h"
 
 
 static GstElementDetails colorspace_details = {
@@ -54,6 +55,7 @@ GST_PAD_TEMPLATE_FACTORY (colorspace_src_template_factory,
     "video/raw",
       "format",		GST_PROPS_LIST (
 	                  GST_PROPS_FOURCC (GST_STR_FOURCC ("I420")),
+	                  GST_PROPS_FOURCC (GST_STR_FOURCC ("YV12")),
 	                  GST_PROPS_FOURCC (GST_STR_FOURCC ("YUY2")),
 	                  GST_PROPS_FOURCC (GST_STR_FOURCC ("RGB "))
 	                ),
@@ -71,6 +73,7 @@ GST_PAD_TEMPLATE_FACTORY (colorspace_sink_template_factory,
     "video/raw",
       "format",		GST_PROPS_LIST (
 	                  GST_PROPS_FOURCC (GST_STR_FOURCC ("I420")),
+	                  GST_PROPS_FOURCC (GST_STR_FOURCC ("YV12")),
 	                  GST_PROPS_FOURCC (GST_STR_FOURCC ("YUY2")),
 	                  GST_PROPS_FOURCC (GST_STR_FOURCC ("RGB "))
 	                ),
@@ -98,8 +101,6 @@ static GstElementStateReturn
 			gst_colorspace_change_state 		(GstElement *element);
 
 /* FIXME */
-extern void 	gst_colorspace_yuy2_to_i420	(unsigned char *src, unsigned char *dest, 
-						 guint width, guint height);
 extern void 	gst_colorspace_rgb32_to_i420	(unsigned char *src, unsigned char *dest, 
 						 guint width, guint height);
 extern void 	gst_colorspace_rgb32_to_yv12	(unsigned char *src, unsigned char *dest, 
@@ -218,6 +219,10 @@ colorspace_setup_converter (GstColorspace *space, GstCaps *from_caps, GstCaps *t
           space->type = GST_COLORSPACE_NONE;
 	  space->destbpp = 12;
 	  return TRUE;
+        case GST_MAKE_FOURCC ('Y','V','1','2'):
+          space->type = GST_COLORSPACE_420_SWAP;
+	  space->destbpp = 12;
+	  return TRUE;
 
       }
       break;
@@ -231,6 +236,17 @@ colorspace_setup_converter (GstColorspace *space, GstCaps *from_caps, GstCaps *t
           space->type = GST_COLORSPACE_NONE;
 	  space->destbpp = 16;
 	  return TRUE;
+        case GST_MAKE_FOURCC ('R','G','B',' '):
+          GST_INFO (GST_CAT_NEGOTIATION, "colorspace: YUY2 to RGB not implemented!!");
+	  return FALSE;
+      }
+      break;
+    case GST_MAKE_FOURCC ('Y','V','1','2'):
+      switch (to_space) {
+        case GST_MAKE_FOURCC ('I','4','2','0'):
+          space->type = GST_COLORSPACE_420_SWAP;
+	  space->destbpp = 12;
+	  return TRUE;
       }
       break;
   }
@@ -279,7 +295,7 @@ gst_colorspace_sinkconnect (GstPad *pad, GstCaps *caps)
 
   peer = gst_pad_get_peer (pad);
   if (peer) {
-    if (!gst_colorspace_srcconnect_func (pad, gst_pad_get_allowed_caps (space->srcpad), FALSE)) {
+    if (gst_colorspace_srcconnect_func (pad, gst_pad_get_allowed_caps (space->srcpad), FALSE) < 1) {
       space->sinkcaps = NULL;
       return GST_PAD_CONNECT_REFUSED;
     }
@@ -347,7 +363,6 @@ gst_colorspace_srcconnect_func (GstPad *pad, GstCaps *caps, gboolean newcaps)
     peercaps = peercaps->next;
   }
   
-  gst_element_error (GST_ELEMENT (space), "could not agree on caps with peer pads");
   /* we disable ourself here */
   space->disabled = TRUE;
 
@@ -475,6 +490,12 @@ gst_colorspace_chain (GstPad *pad,GstBuffer *buf)
 				   space->width,
 				   space->height);
     }
+    else if (space->type == GST_COLORSPACE_420_SWAP) {
+      gst_colorspace_i420_to_yv12 (GST_BUFFER_DATA (buf),
+		                   GST_BUFFER_DATA (outbuf),
+				   space->width,
+				   space->height);
+    }
     else if (space->type == GST_COLORSPACE_RGB32_I420) {
       gst_colorspace_rgb32_to_i420 (GST_BUFFER_DATA (buf),
 		                   GST_BUFFER_DATA (outbuf),

ext/hermes/gstcolorspace.h

@@ -59,6 +59,7 @@ typedef enum {
   GST_COLORSPACE_YUY2_I420,
   GST_COLORSPACE_RGB32_I420,
   GST_COLORSPACE_RGB32_YV12,
+  GST_COLORSPACE_420_SWAP,
 } GstColorSpaceConverterType;
 
 struct _GstColorspace {

ext/hermes/yuv2rgb.c

@@ -24,10 +24,10 @@
 
 #include "yuv2rgb.h"
 
-/*#undef HAVE_LIBMMX */
+/* #define HAVE_LIBMMX */
 
-#ifdef HAVE_LIBMMX
-#include "mmx.h"
+#ifdef HAVE_LIBMMX 
+#include <mmx.h>
 #endif
 
 #define CB_BASE 1
@@ -187,8 +187,8 @@ static void gst_colorspace_yuv420P_to_rgb32(GstColorSpaceConverter *space, unsig
 
   gst_colorspace_yuv_to_rgb32(space->color_tables,
 			src,                                  	/* Y component */
-			src+size+(size>>2),		   	/* cb component */
                         src+size,     				/* cr component */
+			src+size+(size>>2),		   	/* cb component */
                         dest,
 			space->height,
 			space->width);
@@ -203,8 +203,8 @@ static void gst_colorspace_yuv420P_to_rgb24(GstColorSpaceConverter *space, unsig
 
   gst_colorspace_yuv_to_rgb24(space->color_tables,
 			src,                                  	/* Y component */
-			src+size+(size>>2),		   	/* cb component */
                         src+size,     				/* cr component */
+			src+size+(size>>2),		   	/* cb component */
                         dest,
 			space->height,
 			space->width);
@@ -219,8 +219,8 @@ static void gst_colorspace_yuv420P_to_rgb16(GstColorSpaceConverter *space, unsig
 
   gst_colorspace_yuv_to_rgb16(space->color_tables,
 			src,                                  	/* Y component */
-			src+size+(size>>2),		   	/* cb component */
                         src+size,     				/* cr component */
+			src+size+(size>>2),		   	/* cb component */
                         dest,
 			space->height,
 			space->width);

ext/hermes/yuv2yuv.c

@@ -53,3 +53,26 @@ void gst_colorspace_yuy2_to_i420(unsigned char *src, unsigned char *dest, guint
     }
   }
 }
+
+void gst_colorspace_i420_to_yv12(unsigned char *src, unsigned char *dest, guint width, guint height) 
+{
+  int size, i;
+  guint8 *destcr, *destcb;
+  
+  size = width * height;
+
+  memcpy (dest, src, size);
+
+  src += size;
+  destcr = dest + size;
+  size >>=2;
+  destcb = destcr + size;
+
+  i=size;
+  while (i--) 
+    *destcb++ = *src++;
+  i=size;
+  while (i--) 
+    *destcr++ = *src++;
+}
+

ext/hermes/yuv2yuv.h

@@ -22,7 +22,8 @@
 
 #include <gst/gst.h>
 
-void gst_colorspace_yuy2_to_i420( guchar *src, guchar *dest, guint width, guint height);
+void gst_colorspace_yuy2_to_i420 (guchar *src, guchar *dest, guint width, guint height);
+void gst_colorspace_i420_to_yv12 (guchar *src, guchar *dest, guint width, guint height);
 
 #endif