Oops. I forgot this one

[gdcm.git] / src / gdcmmpeg2 / src / mpeg2dec / mpeg2dec.c

diff --git a/src/gdcmmpeg2/src/mpeg2dec/mpeg2dec.c b/src/gdcmmpeg2/src/mpeg2dec/mpeg2dec.c
index cb21376008f3f6a64f77a4fdcb27439e12b75801..f5f7dc43f1740c6cc6b6a171865bf0ad561ea960 100644 (file)
--- a/src/gdcmmpeg2/src/mpeg2dec/mpeg2dec.c
+++ b/src/gdcmmpeg2/src/mpeg2dec/mpeg2dec.c
@@ -39,7 +39,7 @@
 
 /* private prototypes */
 static int  video_sequence _ANSI_ARGS_((int *framenum));
-static int Decode_Bitstream _ANSI_ARGS_((void));
+static int  Decode_Bitstream _ANSI_ARGS_((void));
 static int  Headers _ANSI_ARGS_((void));
 static void Initialize_Sequence _ANSI_ARGS_((void));
 static void Initialize_Decoder _ANSI_ARGS_((void));
@@ -58,11 +58,35 @@ static void Clear_Options();
 static void Print_Options();
 #endif
 
+int my_open(char *filename)
+{
+  return open(filename,O_RDONLY|O_BINARY);
+}
+off_t my_seek(int infile, off_t offset,int whence)
+{
+  return lseek(infile, offset, whence);
+}
+ssize_t my_read(int infile,void *buf,size_t count)
+{
+  return read(infile,buf,count);
+}
+int my_close(int infile)
+{
+  return close(infile);
+}
+
+
+
+#ifdef GDCM_BUILD_MPEG2DEC
 int main(argc,argv)
 int argc;
 char *argv[];
 {
   int ret, code;
+  base.open_stream = my_open;
+  base.seek_stream = my_seek;
+  base.read_stream = my_read;
+  base.close_stream = my_close;
 
   Clear_Options();
 
@@ -77,7 +101,9 @@ char *argv[];
 
   /* open MPEG base layer bitstream file(s) */
   /* NOTE: this is either a base layer stream or a spatial enhancement stream */
-  if ((base.Infile=open(Main_Bitstream_Filename,O_RDONLY|O_BINARY))<0)
+/*  if ((base.Infile=open(Main_Bitstream_Filename,O_RDONLY|O_BINARY))<0) */
+  base.Infile = ld->open_stream(Main_Bitstream_Filename);
+  if( base.Infile < 0 )
   {
     fprintf(stderr,"Base layer input file %s not found\n", Main_Bitstream_Filename);
     exit(1);
@@ -112,13 +138,15 @@ char *argv[];
       break;
     }
 
-    lseek(base.Infile, 0l, 0);
+    /*lseek(base.Infile, 0l, SEEK_SET);*/
+    ld->seek_stream(base.Infile,0l,SEEK_SET);
     Initialize_Buffer(); 
   }
 
   if(base.Infile!=0)
   {
-    lseek(base.Infile, 0l, 0);
+    /*lseek(base.Infile, 0l, SEEK_SET);*/
+    ld->seek_stream(base.Infile,0l,SEEK_SET);
   }
 
   Initialize_Buffer(); 
@@ -127,7 +155,9 @@ char *argv[];
   {
     ld = &enhan; /* select enhancement layer context */
 
-    if ((enhan.Infile = open(Enhancement_Layer_Bitstream_Filename,O_RDONLY|O_BINARY))<0)
+    /*if ((enhan.Infile = open(Enhancement_Layer_Bitstream_Filename,O_RDONLY|O_BINARY))<0)*/
+    enhan.Infile = ld->open_stream(Enhancement_Layer_Bitstream_Filename);
+    if (enhan.Infile<0)
     {
       sprintf(Error_Text,"enhancment layer bitstream file %s not found\n",
         Enhancement_Layer_Bitstream_Filename);
@@ -143,15 +173,18 @@ char *argv[];
 
   ret = Decode_Bitstream();
 
-  close(base.Infile);
+  /*close(base.Infile);*/
+  ld->close_stream(base.Infile);
 
   if (Two_Streams)
-    close(enhan.Infile);
+    /*close(enhan.Infile);*/
+    ld->close_stream(enhan.Infile);
 
-  return 0;
+  return ret;
 }
+#endif /*GDCM_BUILD_MPEG2DEC*/
 
-/* IMPLEMENTAION specific rouintes */
+/* IMPLEMENTATION specific routines */
 static void Initialize_Decoder()
 {
   int i;
@@ -290,27 +323,27 @@ char *argv[];              /* argument vector */
   if (argc<2)
   {
     printf("\n%s, %s\n",Version,Author);
-    printf("Usage:  mpeg2decode {options}\n\
-Options: -b  file  main bitstream (base or spatial enhancement layer)\n\
-         -cn file  conformance report (n: level)\n\
-         -e  file  enhancement layer bitstream (SNR or Data Partitioning)\n\
-         -f        store/display interlaced video in frame format\n\
-         -g        concatenated file format for substitution method (-x)\n\
-         -in file  information & statistics report  (n: level)\n\
-         -l  file  file name pattern for lower layer sequence\n\
-                   (for spatial scalability)\n\
-         -on file  output format (0:YUV 1:SIF 2:TGA 3:PPM 4:X11 5:X11HiQ)\n\
-         -q        disable warnings to stderr\n\
-         -r        use double precision reference IDCT\n\
-         -t        enable low level tracing to stdout\n\
-         -u  file  print user_data to stdio or file\n\
-         -vn       verbose output (n: level)\n\
-         -x  file  filename pattern of picture substitution sequence\n\n\
-File patterns:  for sequential filenames, \"printf\" style, e.g. rec%%d\n\
-                 or rec%%d%%c for fieldwise storage\n\
-Levels:        0:none 1:sequence 2:picture 3:slice 4:macroblock 5:block\n\n\
-Example:       mpeg2decode -b bitstream.mpg -f -r -o0 rec%%d\n\
-         \n");
+    printf("Usage:  mpeg2decode {options}\n"
+"Options: -b  file  main bitstream (base or spatial enhancement layer)\n"
+"         -cn file  conformance report (n: level)\n"
+"         -e  file  enhancement layer bitstream (SNR or Data Partitioning)\n"
+"         -f        store/display interlaced video in frame format\n"
+"         -g        concatenated file format for substitution method (-x)\n"
+"         -in file  information & statistics report  (n: level)\n"
+"         -l  file  file name pattern for lower layer sequence\n"
+"                   (for spatial scalability)\n"
+"         -on file  output format (0:YUV 1:SIF 2:TGA 3:PPM 4:X11 5:X11HiQ)\n"
+"         -q        disable warnings to stderr\n"
+"         -r        use double precision reference IDCT\n"
+"         -t        enable low level tracing to stdout\n"
+"         -u  file  print user_data to stdio or file\n"
+"         -vn       verbose output (n: level)\n"
+"         -x  file  filename pattern of picture substitution sequence\n\n"
+"File patterns:  for sequential filenames, \"printf\" style, e.g. rec%%d\n"
+"                 or rec%%d%%c for fieldwise storage\n"
+"Levels:        0:none 1:sequence 2:picture 3:slice 4:macroblock 5:block\n\n"
+"Example:       mpeg2decode -b bitstream.mpg -f -r -o0 rec%%d\n"
+"         \n");
     exit(0);
   }
 
@@ -763,3 +796,4 @@ static void Print_Options()
 
 }
 #endif
+