Enabled byte swapping for audio track sources, added anti option -swab

cdrskin/README

@@ -184,7 +184,7 @@ Anything except .wav files has to be converted into raw format first
     mppdec --raw-le /path/to/track5.mpc track05.cd
 
     cdrskin dev=1,1,0 blank=fast fs=0 -eject \
-           -audio track0[1-5].cd /path/to/track6.wav
+           -audio -swab track0[1-5].cd /path/to/track6.wav
 
 
            Usage example with  http://scdbackup.sourceforge.net
@@ -357,7 +357,7 @@ results with audio data files which are :
   44100 Hz sampling rate 
   16 bits per sample
   stereo (2 channels)
-  little-endian byte order
+  little-endian byte order with option -swab
 Files with name extension .wav get examined wether they are in Microsoft WAVE
 format with above parameters and eventually get extracted by cdrskin itself.
 All other formats (including SUN's format .au) are to be extracted by commands

cdrskin/cdrskin.c

@@ -776,6 +776,7 @@ struct CdrtracK {
  int track_type;
  double sector_size;
  int track_type_by_default;
+ int swap_audio_bytes;
 
  /** Optional fifo between input fd and libburn. It uses a pipe(2) to transfer
      data to libburn. 
@@ -812,7 +813,8 @@ int Cdrtrack_new(struct CdrtracK **track, struct CdrskiN *boss,
  int Cdrskin_get_source(struct CdrskiN *skin, char *source_path,
                         double *fixed_size, double *padding,
                         int *set_by_padsize, int *track_type,
-                        int *track_type_by_default, int flag);
+                        int *track_type_by_default, int *swap_audio_bytes,
+                        int flag);
  int Cdrskin_get_fifo_par(struct CdrskiN *skin, int *fifo_enabled,
                           int *fifo_size, int *fifo_start_empty, int flag);
 
@@ -831,6 +833,7 @@ int Cdrtrack_new(struct CdrtracK **track, struct CdrskiN *boss,
  o->track_type= BURN_MODE1;
  o->sector_size= 2048.0;
  o->track_type_by_default= 1;
+ o->swap_audio_bytes= 0;
  o->fifo_enabled= 0;
  o->fifo= NULL;
  o->fifo_outlet_fd= -1;
@@ -839,7 +842,8 @@ int Cdrtrack_new(struct CdrtracK **track, struct CdrskiN *boss,
  o->libburn_track= NULL;
  ret= Cdrskin_get_source(boss,o->source_path,&(o->fixed_size),&(o->padding),
                          &(o->set_by_padsize),&(skin_track_type),
-                         &(o->track_type_by_default),0);
+                         &(o->track_type_by_default),&(o->swap_audio_bytes),
+                         0);
  if(ret<=0)
    goto failed;
  Cdrtrack_set_track_type(o,skin_track_type,0);
@@ -964,8 +968,10 @@ int Cdrtrack_extract_audio(struct CdrtracK *track, int *fd, off_t *xtr_size,
  ret= libdax_audioxtr_detach_fd(xtr,fd,0);
  if(ret<=0)
    {ret= -1*!!ret; goto ex;}
- fprintf(stderr,"cdrskin: NOTE : %.f audio bytes in '%s'\n",
-                (double) *xtr_size, track->source_path);
+ track->swap_audio_bytes= !!msb_first;
+ fprintf(stderr,"cdrskin: NOTE : %.f %saudio bytes in '%s'\n",
+                (double) *xtr_size, (msb_first ? "" : "(-swab) "),
+                track->source_path);
  ret= 1;
 ex:
  libdax_audioxtr_destroy(&xtr,0);
@@ -1179,7 +1185,8 @@ int Cdrtrack_add_to_session(struct CdrtracK *track, int trackno,
  }
  burn_track_define_data(tr,0,(int) lib_padding,sector_pad_up,
                         track->track_type);
-
+ burn_track_set_byte_swap(tr,
+                   (track->track_type==BURN_AUDIO && track->swap_audio_bytes));
  fixed_size= track->fixed_size;
  if((flag&2) && track->padding>0) {
    if(flag&1)
@@ -1983,6 +1990,8 @@ see_cdrskin_eng_html:;
             "\t-data\t\tSubsequent tracks are CD-ROM data mode 1 (default)\n");
      fprintf(stderr,"\t-pad\t\tpadsize=30k\n");
      fprintf(stderr,"\t-nopad\t\tDo not pad (default)\n");
+     fprintf(stderr,
+       "\t-swab\t\tAudio data source is byte-swapped (little-endian/Intel)\n");
      fprintf(stderr,"\t-help\t\tprint this text to stderr and exit\n");
      fprintf(stderr,
          "Option -audio does automatic extraction of .wav but not of .au .\n");
@@ -2241,6 +2250,7 @@ struct CdrskiN {
  /** track_type may be set to BURN_MODE1, BURN_AUDIO, etc. */
  int track_type;
  int track_type_by_default; /* 0= explicit, 1=not set, 2=by file extension */
+ int swap_audio_bytes;
 
  /** The list of tracks with their data sources and parameters */
  struct CdrtracK *tracklist[Cdrskin_track_maX];
@@ -2343,6 +2353,7 @@ int Cdrskin_new(struct CdrskiN **skin, struct CdrpreskiN *preskin, int flag)
  o->padding= 0.0;
  o->set_by_padsize= 0;
  o->track_type= BURN_MODE1;
+ o->swap_audio_bytes= 0;   /* >>> ??? does this have to be 1 ? */
  o->track_type_by_default= 1;
  for(i=0;i<Cdrskin_track_maX;i++)
    o->tracklist[i]= NULL;
@@ -2413,7 +2424,8 @@ int Cdrskin_destroy(struct CdrskiN **o, int flag)
 int Cdrskin_get_source(struct CdrskiN *skin, char *source_path,
                        double *fixed_size, double *padding,
                        int *set_by_padsize, int *track_type,
-                       int *track_type_by_default, int flag)
+                       int *track_type_by_default, int *swap_audio_bytes,
+                       int flag)
 {
  strcpy(source_path,skin->source_path);
  *fixed_size= skin->fixed_size;
@@ -2421,6 +2433,7 @@ int Cdrskin_get_source(struct CdrskiN *skin, char *source_path,
  *set_by_padsize= skin->set_by_padsize;
  *track_type= skin->track_type;
  *track_type_by_default= skin->track_type_by_default;
+ *swap_audio_bytes= skin->swap_audio_bytes;
  return(1);
 }
 
@@ -4368,7 +4381,7 @@ int Cdrskin_setup(struct CdrskiN *skin, int argc, char **argv, int flag)
    "-immed", "-force", "-raw", "-raw96p", "-raw16",
    "-clone", "-text", "-mode2", "-xa", "-xa1", "-xa2", "-xamix",
    "-cdi", "-isosize", "-preemp", "-nopreemp", "-copy", "-nocopy",
-   "-scms", "-shorttrack", "-noshorttrack", "-swab", "-packet", "-noclose",
+   "-scms", "-shorttrack", "-noshorttrack", "-packet", "-noclose",
    ""
  };
 
@@ -4745,6 +4758,9 @@ set_speed:;
      if(skin->verbosity>=Cdrskin_verbose_cmD)
        printf("cdrskin: speed : %f\n",skin->x_speed);
 
+   } else if(strcmp(argv[i],"-swab")==0) {
+     skin->swap_audio_bytes= 0;
+
    } else if(strcmp(argv[i],"-tao")==0) {
      if(skin->tao_to_sao_tsize<=0.0) {
        fprintf(stderr,"cdrskin: FATAL : libburn does not support -tao yet.\n");

cdrskin/cdrskin_timestamp.h

@@ -1 +1 @@
-#define Cdrskin_timestamP "2006.10.24.075039"
+#define Cdrskin_timestamP "2006.10.24.102107"

libburn/libburn.h

@@ -849,6 +849,16 @@ int burn_session_remove_track(struct burn_session *s, struct burn_track *t);
 void burn_track_define_data(struct burn_track *t, int offset, int tail,
 			    int pad, int mode);
 
+
+/* ts A61024 */
+/** Define wether a track shall swap bytes of its input stream.
+    @param t The track to change
+    @param swap_source_bytes 0=do not swap, 1=swap byte pairs
+    @return 1=success , 0=unacceptable value
+*/
+int burn_track_set_byte_swap(struct burn_track *t, int swap_source_bytes);
+
+
 /** Set the ISRC details for a track
 	@param t The track to change
 	@param country the 2 char country code. Each character must be

libburn/sector.c

@@ -79,7 +79,7 @@ static int get_outmode(struct burn_write_opts *o)
 
 static void get_bytes(struct burn_track *track, int count, unsigned char *data)
 {
-	int valid, shortage, curr;
+	int valid, shortage, curr, i, tr;
 
 /* no track pointer means we're just generating 0s */
 	if (!track) {
@@ -147,9 +147,17 @@ static void get_bytes(struct burn_track *track, int count, unsigned char *data)
 			curr += valid;
 		}
 	}
-	if (!shortage)
-		return;
-	memset(data + curr, 0, shortage);
+ex:;
+	/* ts A61024 : general finalizing processing */ 
+	if(shortage)
+		memset(data + curr, 0, shortage); /* this is old icculus.org */
+	if (track->swap_source_bytes == 1) {
+		for (i = 1; i < count; i += 2) {
+			tr = data[i];
+			data[i] = data[i-1];
+			data[i-1] = tr;
+		}
+	}
 }
 
 /* ts A61009 : seems to hand out sector start pointer in opts->drive->buffer

libburn/structure.c

@@ -118,6 +118,9 @@ struct burn_track *burn_track_create(void)
 	t->postgap = 0;
 	t->pregap1 = 0;
 	t->pregap2 = 0;
+
+	/* ts A61024 */
+	t->swap_source_bytes = 0;
 	return t;
 }
 
@@ -227,6 +230,17 @@ void burn_track_define_data(struct burn_track *t, int offset, int tail,
 	t->tail = tail;
 }
 
+
+/* ts A61024 */
+int burn_track_set_byte_swap(struct burn_track *t, int swap_source_bytes)
+{
+	if(swap_source_bytes!=0 && swap_source_bytes!=1)
+		return 0;
+	t->swap_source_bytes = swap_source_bytes;
+	return 1;
+}
+
+
 void burn_track_set_isrc(struct burn_track *t, char *country, char *owner,
 			 unsigned char year, unsigned int serial)
 {

libburn/structure.h

@@ -41,6 +41,10 @@ struct burn_track
 	/** The track contains a postgap */
 	int postgap;
 	struct isrc isrc;
+
+	/* ts A61024 */
+	/** Byte swapping on source data stream : 0=none , 1=pairwise */
+	int swap_source_bytes;
 };
 
 struct burn_session