Another (final?) patch for libpostproc.

This one replace horizClassify by a
transpose/(use Vert)/transpose sequence.
This add LowPass and DefFilter for "free".
I also fixed the header in postprocess.c
and special-cased some of the well-aligned
cases (all horiz stuff is well-aligned).

patch by (Romain Dolbeau <dolbeau at irisa dot fr>)

Originally committed as revision 3175 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/libpostproc/postprocess.c

@@ -29,10 +29,10 @@ isVertDC		Ec	Ec			Ec
 isVertMinMaxOk		Ec	Ec			Ec
 doVertLowPass		E		e	e	Ec
 doVertDefFilter		Ec	Ec	e	e	Ec
-isHorizDC		Ec	Ec
-isHorizMinMaxOk		a	E
-doHorizLowPass		E		e	e
-doHorizDefFilter	Ec	Ec	e	e
+isHorizDC		Ec	Ec			Ec
+isHorizMinMaxOk		a	E			Ec
+doHorizLowPass		E		e	e	Ec
+doHorizDefFilter	Ec	Ec	e	e	Ec
 do_a_deblock		Ec	E	Ec	E
 deRing			E		e	e*	Ecp
 Vertical RKAlgo1	E		a	a
@@ -43,7 +43,7 @@ LinIpolDeinterlace	e		E	E*
 CubicIpolDeinterlace	a		e	e*
 LinBlendDeinterlace	e		E	E*
 MedianDeinterlace#	E	Ec	Ec
-TempDeNoiser#		E		e	e
+TempDeNoiser#		E		e	e	Ec
 
 * i dont have a 3dnow CPU -> its untested, but noone said it doesnt work so it seems to work
 # more or less selfinvented filters so the exactness isnt too meaningfull

libavcodec/libpostproc/postprocess_template.c

@@ -3684,12 +3684,27 @@ static void RENAME(postProcess)(uint8_t src[], int srcStride, uint8_t dst[], int
 					horizX1Filter(dstBlock-4, stride, QP);
 				else if(mode & H_DEBLOCK)
 				{
+#ifdef HAVE_ALTIVEC
+					unsigned char __attribute__ ((aligned(16))) tempBlock[272];
+					transpose_16x8_char_toPackedAlign_altivec(tempBlock, dstBlock - (4 + 1), stride);
+
+					const int t=vertClassify_altivec(tempBlock-48, 16, &c);
+					if(t==1) {
+						doVertLowPass_altivec(tempBlock-48, 16, &c);
+                                                transpose_8x16_char_fromPackedAlign_altivec(dstBlock - (4 + 1), tempBlock, stride);
+                                        }
+					else if(t==2) {
+						doVertDefFilter_altivec(tempBlock-48, 16, &c);
+                                                transpose_8x16_char_fromPackedAlign_altivec(dstBlock - (4 + 1), tempBlock, stride);
+                                        }
+#else
 					const int t= RENAME(horizClassify)(dstBlock-4, stride, &c);
 
 					if(t==1)
 						RENAME(doHorizLowPass)(dstBlock-4, stride, &c);
 					else if(t==2)
 						RENAME(doHorizDefFilter)(dstBlock-4, stride, &c);
+#endif
 				}else if(mode & H_A_DEBLOCK){
 					RENAME(do_a_deblock)(dstBlock-8, 1, stride, &c);
 				}