[Mjpeg-developer] [PATCH] to enable CRC error protection in mp2enc

[Stephen B. <ste...@ad...>]

Hello,

Here is a CVS patch to enable CRC error protection for mp2enc via  
command-line.


Index: aenc/musicin.c
===================================================================
RCS file: /cvsroot/mjpeg/mjpeg_play/aenc/musicin.c,v
retrieving revision 1.17
diff -u -r1.17 musicin.c
--- aenc/musicin.c	23 Sep 2002 19:46:42 -0000	1.17
+++ aenc/musicin.c	28 Nov 2003 04:52:37 -0000
@@ -134,6 +134,7 @@
   printf("              num must be one of 32000, 44100, 48000\n");
   printf("   -s         Force stereo output (default)\n");
   printf("   -m         Force mono output\n");
+  printf("   -e         Use CRC error protection\n");
   printf("   -V         Force VCD compatible output (same as: -b 224 - 
r 44100 -s)\n");
   printf("   -?         Print this lot out\n");
   exit(0);
@@ -167,7 +168,7 @@
     info->lay = 2;
     info->emphasis = 0;
     info->extension = 0;
-    info->error_protection = FALSE;
+    info->error_protection = 0;
     info->copyright = 0;
     info->original = 0;

@@ -177,7 +178,7 @@

     brt = 0;

-    while( (n=getopt(argc,argv,"b:o:r:smv:V")) != EOF)
+    while( (n=getopt(argc,argv,"b:o:r:smeVv:")) != EOF)
     {
         switch(n) {

@@ -202,6 +203,10 @@
 			mono = 1;
 			stereo = 0;
 			break;
+
+		case 'e':
+                        info->error_protection = 1;
+			break;
 			
 		case 'V':
 			video_cd = 1;
@@ -241,7 +246,7 @@

     if(stereo && mono)
     {
-       mjpeg_error("Options -s and -m are mutally exclusive!");
+       mjpeg_error("Options -s and -m are mutually exclusive!");
        Usage(argv[0]);
     }
     if(mono)   chans_out = 1;
@@ -249,19 +254,25 @@

     if(video_cd && mono)
     {
-		mjpeg_error("Options -v and -m are mutally  
exclusive!");
+		mjpeg_error("Options -V and -m are mutually  
exclusive!");
        Usage(argv[0]);
     }

     if(video_cd && freq_out!=0 && freq_out!=44100)
     {
-       mjpeg_error("Option -v requires sample rate 44100!");
+       mjpeg_error("Option -V requires sample rate 44100!");
        Usage(argv[0]);
     }

     if(video_cd && brt!=0 && brt!=224)
     {
-       mjpeg_error("Option -v requires bit rate 224 KBit/s!");
+       mjpeg_error("Option -V requires bit rate 224 KBit/s!");
+       Usage(argv[0]);
+    }
+
+    if(video_cd && info->error_protection )
+    {
+       mjpeg_error("Options -V and -e are mutually exclusive!");
        Usage(argv[0]);
     }

Index: docs/mp2enc.1
===================================================================
RCS file: /cvsroot/mjpeg/mjpeg_play/docs/mp2enc.1,v
retrieving revision 1.4
diff -u -r1.4 mp2enc.1
--- docs/mp2enc.1	23 Oct 2003 17:14:03 -0000	1.4
+++ docs/mp2enc.1	28 Nov 2003 04:52:38 -0000
@@ -18,6 +18,8 @@
 ]
 .RB [ -m
 ]
+.RB [ -e
+]
 .RB [ -V
 ]
 .RB [ -? ]
@@ -78,10 +80,13 @@
 Useful if you've captured a mono signal in stereo and your player can
 handle mono MPEG.
 .TP
+.BI -e
+Use CRC error protection.
+.TP
 .BI -V
 Force VCD comaptible output. Same as -b 224 -r 44100 -s.
 .TP
-.BI -o outputpathname
+.BI -o \ outputpathname
 The name of the output file to generate.  If '-' is given as the  
pathname output is written to standard output.
 .SH AUTHOR
 This man page was written by Andrew Stevens.



Enjoy,
-- 
Stephen Beahm
mailto:ste...@ad...