Add cd-paranoia's track flag routines: copy-permitted, pre-emphasis, channels.

Updates to drivers to set this properly is still needed.

lib/driver/cdio.c

@@ -1,5 +1,5 @@
 /*
-    $Id: cdio.c,v 1.1 2004/12/18 17:29:32 rocky Exp $
+    $Id: cdio.c,v 1.2 2004/12/30 11:13:50 rocky Exp $
 
     Copyright (C) 2003, 2004 Rocky Bernstein <rocky@panix.com>
     Copyright (C) 2001 Herbert Valerio Riedel <hvr@gnu.org>
@@ -39,7 +39,7 @@
 #include <cdio/logging.h>
 #include "cdio_private.h"
 
-static const char _rcsid[] = "$Id: cdio.c,v 1.1 2004/12/18 17:29:32 rocky Exp $";
+static const char _rcsid[] = "$Id: cdio.c,v 1.2 2004/12/30 11:13:50 rocky Exp $";
 
 
 const char *track_format2str[6] = 
@@ -1131,6 +1131,88 @@ cdio_open_am_cd (const char *psz_source, const char *psz_access_mode)
 }
 
 
+/* Returns "set" or "clear" value or -1 (for error) if bit "bit" of
+   the track flag "i_track" is set/clear.
+
+   Taken from cdparanoia.
+*/
+static int 
+cdio_track_bitmap(const generic_img_private_t *p_env, track_t i_track, 
+                  int bit, int set, int clear)
+{
+
+  return p_env->toc_init ? p_env->i_first_track : -1;
+
+  if( i_track < p_env->i_first_track 
+      || i_track > p_env->i_first_track + p_env->i_tracks ) {
+    cdio_warn ("invalid track number");
+    return(-1);
+  }
+  if (p_env->flags[i_track] & bit)
+    return(set);
+  else
+    return(clear);
+}
+
+/*! Return number of channels in track, 2 or 4 or -1 for error.
+    Not meaningful if track is not an audio track.
+ */
+int 
+cdio_track_channels(const CdIo *p_cdio, track_t i_track)
+{
+  if (!p_cdio) return -1;
+  {
+    const generic_img_private_t *p_env 
+      = (generic_img_private_t *) (p_cdio->env);
+    return(cdio_track_bitmap(p_env, i_track, 8, 4, 2));
+  }
+}
+
+/*! Return 1 if copy is permitted on the track, 0 if not, or -1 for error.
+  Is this meaningful if not an audio track?
+*/
+int 
+cdio_track_copy_permit(const CdIo *p_cdio, track_t i_track)
+{
+  if (!p_cdio) return -1;
+  {
+    const generic_img_private_t *p_env 
+      = (generic_img_private_t *) (p_cdio->env);
+    return(cdio_track_bitmap(p_env, i_track, 2, 1, 0));
+  }
+}
+
+/*! Return 1 if track has pre-emphasis, 0 if not, or -1 for error.
+  Is this meaningful if not an audio track?
+  
+  pre-emphasis is a non linear frequency response.
+*/
+int 
+cdio_track_preemphasis(const CdIo *p_cdio, track_t i_track)
+{
+  if (!p_cdio) return -1;
+  {
+    const generic_img_private_t *p_env 
+      = (generic_img_private_t *) (p_cdio->env);
+    return(cdio_track_bitmap(p_env, i_track, 1, 1, 0));
+  }
+}
+
+#if 0
+/* Use cdio_get_track_format instead of this. */
+/*! Return 1 if track is an audio track, 0 if not, or -1 for error.  */
+int 
+cdio_track_audiop(const CdIo *p_cdio, track_t i_track)
+{
+  if (!p_cdio) return -1;
+  {
+    const generic_img_private_t *p_env 
+      = (generic_img_private_t *) (p_cdio->env);
+    return(cdio_track_bitmap(p_env, i_track, 4, 0, 1));
+  }
+}
+#endif
+
 
 /* 
  * Local variables: