colorspace converter tests (memory corruption tests at different width/src/dst)

quite impressive results only 1 of the 13 rgb->rgb converters fails for the c versions
... sadly only 1 of the mmx converters passes though :( ... i feared allready  that last mplayerxp merge reversed the bugfixes :((((

Originally committed as revision 6604 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

postproc/Makefile

@@ -5,6 +5,7 @@ LIBNAME = libpostproc.a
 
 SRCS=postprocess.c swscale.c rgb2rgb.c yuv2rgb.c
 OBJS=$(SRCS:.c=.o)
+CS_TEST_OBJS=cs_test.o rgb2rgb.o ../cpudetect.o ../mp_msg.o
 
 CFLAGS  = $(OPTFLAGS) $(MLIB_INC) -I. -I.. -Wall $(EXTRA_INC)
 # -I/usr/X11R6/include/
@@ -32,6 +33,9 @@ dep:    depend
 depend:
 	$(CC) -MM $(CFLAGS) $(SRCS) 1>.depend
 
+cs_test: $(CS_TEST_OBJS)
+	$(CC) $(CS_TEST_OBJS) -o cs_test
+
 #
 # include dependency files if they exist
 #

postproc/cs_test.c

@@ -0,0 +1,182 @@
+/*
+    Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+
+#include "rgb2rgb.h"
+#include "../cpudetect.h"
+
+#define SIZE 1000
+#define srcByte 0x55
+#define dstByte 0xBB
+
+main(int argc, char **argv)
+{
+	int i, funcNum;
+	uint8_t *srcBuffer= (uint8_t*)memalign(128, SIZE);
+	uint8_t *dstBuffer= (uint8_t*)memalign(128, SIZE);
+	int failedNum=0;
+	int passedNum=0;
+	
+	printf("memory corruption test ...\n");
+	
+	if(argc==2){
+		GetCpuCaps(&gCpuCaps);
+		printf("testing mmx\n");
+	}
+	
+	for(funcNum=0; funcNum<100; funcNum++){
+		int width;
+		int failed=0;
+		int srcBpp=0;
+		int dstBpp=0;
+
+		printf("."); fflush(stdout);
+		memset(srcBuffer, srcByte, SIZE);
+
+		for(width=32; width<64; width++){
+			int dstOffset;
+			for(dstOffset=128; dstOffset<196; dstOffset++){
+				int srcOffset;
+				memset(dstBuffer, dstByte, SIZE);
+
+				for(srcOffset=128; srcOffset<196; srcOffset++){
+					uint8_t *src= srcBuffer+srcOffset;
+					uint8_t *dst= dstBuffer+dstOffset;
+					char *name=NULL;
+					
+					if(failed) break; //dont fill the screen with shit ...
+
+					switch(funcNum){
+					case 0:
+						srcBpp=2;
+						dstBpp=2;
+						name="rgb15to16";
+						rgb15to16(src, dst, width*srcBpp);
+						break;
+					case 1:
+						srcBpp=2;
+						dstBpp=3;
+						name="rgb15to24";
+						rgb15to24(src, dst, width*srcBpp);
+						break;
+					case 2:
+						srcBpp=2;
+						dstBpp=4;
+						name="rgb15to32";
+						rgb15to32(src, dst, width*srcBpp);
+						break;
+					case 3:
+						srcBpp=2;
+						dstBpp=3;
+						name="rgb16to24";
+						rgb16to24(src, dst, width*srcBpp);
+						break;
+					case 4:
+						srcBpp=2;
+						dstBpp=4;
+						name="rgb16to32";
+						rgb16to32(src, dst, width*srcBpp);
+						break;
+					case 5:
+						srcBpp=3;
+						dstBpp=2;
+						name="rgb24to15";
+						rgb24to15(src, dst, width*srcBpp);
+						break;
+					case 6:
+						srcBpp=3;
+						dstBpp=2;
+						name="rgb24to16";
+						rgb24to16(src, dst, width*srcBpp);
+						break;
+					case 7:
+						srcBpp=3;
+						dstBpp=4;
+						name="rgb24to32";
+						rgb24to32(src, dst, width*srcBpp);
+						break;
+					case 8:
+						srcBpp=4;
+						dstBpp=2;
+						name="rgb32to15";
+						rgb32to15(src, dst, width*srcBpp);
+						break;
+					case 9:
+						srcBpp=4;
+						dstBpp=2;
+						name="rgb32to16";
+						rgb32to16(src, dst, width*srcBpp);
+						break;
+					case 10:
+						srcBpp=4;
+						dstBpp=3;
+						name="rgb32to24";
+						rgb32to24(src, dst, width*srcBpp);
+						break;
+					case 11:
+						srcBpp=3;
+						dstBpp=3;
+						name="rgb24tobgr24";
+						rgb24tobgr24(src, dst, width*srcBpp);
+						break;
+					case 12:
+						srcBpp=4;
+						dstBpp=4;
+						name="rgb32tobgr32";
+						rgb32tobgr32(src, dst, width*srcBpp);
+						break;
+					}
+					if(!srcBpp) break;
+
+					for(i=0; i<SIZE; i++){
+						if(srcBuffer[i]!=srcByte){
+							printf("src damaged at %d w:%d src:%d dst:%d %s\n", 
+								i, width, srcOffset, dstOffset, name);
+							failed=1;
+							break;
+						}
+					}
+					for(i=0; i<dstOffset; i++){
+						if(dstBuffer[i]!=dstByte){
+							printf("dst damaged at %d w:%d src:%d dst:%d %s\n", 
+								i, width, srcOffset, dstOffset, name);
+							failed=1;
+							break;
+						}
+					}
+					for(i=dstOffset + width*dstBpp; i<SIZE; i++){
+						if(dstBuffer[i]!=dstByte){
+							printf("dst damaged at %d w:%d src:%d dst:%d %s\n", 
+								i, width, srcOffset, dstOffset, name);
+							failed=1;
+							break;
+						}
+					}
+				}
+			}
+		}
+		if(failed) failedNum++;
+		else if(srcBpp) passedNum++;
+	}
+	
+	printf("%d converters passed, %d converters randomly overwrote memory\n", passedNum, failedNum);
+	return failedNum;
+}