access.c

VLC媒体播放程序

    meta_info_add_str( "Genre", p_cdda->cddb.disc->genre );
    meta_info_add_str( "Extended Data", p_cdda->cddb.disc->ext_data );
    {
      char year[5];
      if (p_cdda->cddb.disc->year != 0) {
        snprintf(year, 5, "%d", p_cdda->cddb.disc->year);
        meta_info_add_str( "Year", year );
      }
      if ( p_cdda->cddb.disc->discid ) {
        input_AddInfo( p_cat, _("CDDB Disc ID"), "%x",
                       p_cdda->cddb.disc->discid );
      }

      if ( p_cdda->cddb.disc->category != CDDB_CAT_INVALID ) {
        input_AddInfo( p_cat, _("CDDB Disc Category"), "%s",
                       CDDB_CATEGORY[p_cdda->cddb.disc->category] );
      }

    }
  }

#endif /*HAVE_LIBCDDB*/
#define TITLE_MAX 30

  {
    track_t i_track = p_cdda->i_nb_tracks;
    char psz_buffer[MSTRTIME_MAX_SIZE];
    mtime_t i_duration =
      (p_cdda->p_sectors[i_track] - p_cdda->p_sectors[0])
      / CDIO_CD_FRAMES_PER_SEC;

    dbg_print( INPUT_DBG_META, "Duration %ld", (long int) i_duration );
    input_AddInfo( p_cat, _("Duration"), "%s",
                   secstotimestr( psz_buffer, i_duration ) );

    for( i_track = 0 ; i_track < p_cdda->i_nb_tracks ; i_track++ ) {
      char track_str[TITLE_MAX];
      mtime_t i_duration =
	(p_cdda->p_sectors[i_track+1] - p_cdda->p_sectors[i_track])
	/ CDIO_CD_FRAMES_PER_SEC;
      snprintf(track_str, TITLE_MAX, "%s %02d", _("Track"), i_track+1);
      p_cat = input_InfoCategory( p_input, track_str );
      input_AddInfo( p_cat, _("Duration"), "%s",
		     secstotimestr( psz_buffer, i_duration ) );

#ifdef HAVE_LIBCDDB
      if (p_cdda->i_cddb_enabled) {
        cddb_track_t *t=cddb_disc_get_track(p_cdda->cddb.disc,
                                            i_track);
        if (t != NULL && t->artist != NULL) {
	  input_AddInfo( p_cat, _("Artist"), "%s", t->artist );
	  input_AddInfo( p_cat, _("Title"), "%s",  t->title );
	}
      }
#endif
    }
  }

  if( p_playlist ) vlc_object_release( p_playlist );
}


#ifdef HAVE_LIBCDDB

#define free_and_dup(var, val) \
  if (var) free(var);          \
  if (val) var=strdup(val);


static void
GetCDDBInfo( const input_thread_t *p_input, cdda_data_t *p_cdda )
{

  dbg_print( (INPUT_DBG_CALL|INPUT_DBG_EXT), "" );

  if (config_GetInt( p_input, MODULE_STRING "-cddb-enabled" )) {
    int i, i_matches;
    cddb_conn_t  *conn = cddb_new();
    const CdIo *cdio = p_cdda->p_cddev->cdio;


    cddb_log_set_handler (uninit_log_handler);

    if (!conn) {
      msg_Warn( p_input, "unable to initialize libcddb" );
      goto cddb_destroy;
    }

    cddb_set_email_address( conn,
                            config_GetPsz( p_input,
                                           MODULE_STRING "-cddb-email") );

    cddb_set_server_name( conn,
                          config_GetPsz( p_input,
                                         MODULE_STRING "-cddb-server") );

    cddb_set_server_port(conn,
                          config_GetInt( p_input,
                                         MODULE_STRING "-cddb-port") );

    /* Set the location of the local CDDB cache directory.
       The default location of this directory is */

    if (!config_GetInt( p_input, MODULE_STRING "-cddb-enable-cache" ))
      cddb_cache_disable(conn);

    cddb_cache_set_dir(conn,
                       config_GetPsz( p_input,
                                      MODULE_STRING "-cddb-cachedir") );

    cddb_set_timeout(conn,
                     config_GetInt( p_input, MODULE_STRING "-cddb-timeout") );


    if (config_GetInt( p_input, MODULE_STRING "-cddb-httpd" )) {
      cddb_http_enable(conn);
    } else
      cddb_http_disable(conn);

    p_cdda->cddb.disc = cddb_disc_new();
    if (!p_cdda->cddb.disc) {
      msg_Err( p_input, "Unable to create CDDB disc structure." );
      goto cddb_end;
    }

    for(i = 1; i <= p_cdda->i_nb_tracks; i++) {
      cddb_track_t *t = cddb_track_new();
      t->frame_offset = cdio_get_track_lba(cdio, i);
      cddb_disc_add_track(p_cdda->cddb.disc, t);
    }

    p_cdda->cddb.disc->length =
      cdio_get_track_lba(cdio, CDIO_CDROM_LEADOUT_TRACK)
      / CDIO_CD_FRAMES_PER_SEC;

    if (!cddb_disc_calc_discid(p_cdda->cddb.disc)) {
      msg_Err( p_input, "CDDB disc calc failed" );
      goto cddb_destroy;
    }

    i_matches = cddb_query(conn, p_cdda->cddb.disc);
    if (i_matches > 0) {
      if (i_matches > 1)
        msg_Warn( p_input, "Found %d matches in CDDB. Using first one.",
                  i_matches);
      cddb_read(conn, p_cdda->cddb.disc);

      if (p_cdda->i_debug & INPUT_DBG_CDDB)
        cddb_disc_print(p_cdda->cddb.disc);

    } else {
      msg_Warn( p_input, "CDDB error: %s", cddb_error_str(errno));
    }

  cddb_destroy:
    cddb_destroy(conn);
  }
  cddb_end: ;
}
#endif /*HAVE_LIBCDDB*/

#define add_format_str_info(val)                         \
  {                                                      \
    const char *str = val;                               \
    unsigned int len;                                    \
    if (val != NULL) {                                   \
      len=strlen(str);                                   \
      if (len != 0) {                                    \
        strncat(tp, str, TEMP_STR_LEN-(tp-temp_str));    \
        tp += len;                                       \
      }                                                  \
      saw_control_prefix = false;                        \
    }                                                    \
  }

#define add_format_num_info(val, fmt)                    \
  {                                                      \
    char num_str[10];                                    \
    unsigned int len;                                    \
    sprintf(num_str, fmt, val);                          \
    len=strlen(num_str);                                 \
    if (len != 0) {                                      \
      strncat(tp, num_str, TEMP_STR_LEN-(tp-temp_str));  \
      tp += len;                                         \
    }                                                    \
    saw_control_prefix = false;                          \
  }

/*!
   Take a format string and expand escape sequences, that is sequences that
   begin with %, with information from the current CD.
   The expanded string is returned. Here is a list of escape sequences:

   %a : The album artist **
   %A : The album information **
   %C : Category **
   %I : CDDB disk ID **
   %G : Genre **
   %M : The current MRL
   %m : The CD-DA Media Catalog Number (MCN)
   %n : The number of tracks on the CD
   %p : The artist/performer/composer in the track **
   %T : The track number **
   %s : Number of seconds in this track
   %t : The name **
   %Y : The year 19xx or 20xx **
   %% : a %
*/
static char *
CDDAFormatStr(const input_thread_t *p_input, cdda_data_t *p_cdda,
              const char format_str[], const char *mrl, int i_track)
{
#define TEMP_STR_SIZE 256
#define TEMP_STR_LEN (TEMP_STR_SIZE-1)
  static char    temp_str[TEMP_STR_SIZE];
  size_t i;
  char * tp = temp_str;
  bool saw_control_prefix = false;
  size_t format_len = strlen(format_str);

  bzero(temp_str, TEMP_STR_SIZE);

  for (i=0; i<format_len; i++) {

    if (!saw_control_prefix && format_str[i] != '%') {
      *tp++ = format_str[i];
      saw_control_prefix = false;
      continue;
    }

    switch(format_str[i]) {
    case '%':
      if (saw_control_prefix) {
        *tp++ = '%';
      }
      saw_control_prefix = !saw_control_prefix;
      break;
#ifdef HAVE_LIBCDDB
    case 'a':
      if (!p_cdda->i_cddb_enabled) goto not_special;
      add_format_str_info(p_cdda->cddb.disc->artist);
      break;
    case 'A':
      if (!p_cdda->i_cddb_enabled) goto not_special;
      add_format_str_info(p_cdda->cddb.disc->title);
      break;
    case 'C':
      if (!p_cdda->i_cddb_enabled) goto not_special;
      add_format_str_info(CDDB_CATEGORY[p_cdda->cddb.disc->category]);
      break;
    case 'G':
      if (!p_cdda->i_cddb_enabled) goto not_special;
      add_format_str_info(p_cdda->cddb.disc->genre);
      break;
    case 'I':
      if (!p_cdda->i_cddb_enabled) goto not_special;
      add_format_num_info(p_cdda->cddb.disc->discid, "%x");
      break;
    case 'Y':
      if (!p_cdda->i_cddb_enabled) goto not_special;
      add_format_num_info(p_cdda->cddb.disc->year, "%5d");
      break;
    case 't':
      if (p_cdda->i_cddb_enabled) {
        cddb_track_t *t=cddb_disc_get_track(p_cdda->cddb.disc,
                                            i_track-1);
        if (t != NULL && t->title != NULL)
          add_format_str_info(t->title);
      } else goto not_special;
      break;
    case 'p':
      if (p_cdda->i_cddb_enabled) {
        cddb_track_t *t=cddb_disc_get_track(p_cdda->cddb.disc,
                                            i_track-1);
        if (t != NULL && t->artist != NULL)
          add_format_str_info(t->artist);
      } else goto not_special;
      break;
#endif

    case 'M':
      add_format_str_info(mrl);
      break;

#if FINISHED
    case 'm':
      add_format_str_info(p_cdda->mcn);
      break;
#endif

    case 'n':
      add_format_num_info(p_cdda->i_nb_tracks, "%d");
      break;

#ifdef HAVE_LIBCDDB
    case 's':
      if (p_cdda->i_cddb_enabled) {
        char psz_buffer[MSTRTIME_MAX_SIZE];
        mtime_t i_duration =
          (p_cdda->p_sectors[i_track] - p_cdda->p_sectors[i_track-1])
          / CDIO_CD_FRAMES_PER_SEC;
        add_format_str_info(secstotimestr( psz_buffer, i_duration ) );
      } else goto not_special;
      break;
#endif

    case 'T':
      add_format_num_info(i_track, "%02d");
      break;
#ifdef HAVE_LIBCDDB
    not_special:
#endif
    default:
      *tp++ = '%';
      *tp++ = format_str[i];
      saw_control_prefix = false;
    }
  }
  return strdup(temp_str);
}

static void
CDDACreatePlayListItem(const input_thread_t *p_input, cdda_data_t *p_cdda,
                       playlist_t *p_playlist, unsigned int i_track,
                       char *psz_mrl, int psz_mrl_max,
                       const char *psz_source, int playlist_operation,
                       int i_pos)
{
  mtime_t i_duration =
    (p_cdda->p_sectors[i_track] - p_cdda->p_sectors[i_track-1])
    * (1000000 / CDIO_CD_FRAMES_PER_SEC) ;
  char *p_author;
  char *p_title;
  char *config_varname = MODULE_STRING "-title-format";
  playlist_item_t *p_item;

#ifdef HAVE_LIBCDDB
  if (p_cdda->i_cddb_enabled) {
    config_varname = MODULE_STRING "-cddb-title-format";
  }
#endif /*HAVE_LIBCDDB*/

  snprintf(psz_mrl, psz_mrl_max, "%s%s@T%u",
           CDDA_MRL_PREFIX, psz_source, i_track);

  p_title = CDDAFormatStr(p_input, p_cdda,
                          config_GetPsz( p_input, config_varname ),
                          psz_mrl, i_track);

  dbg_print( INPUT_DBG_META, "mrl: %s, title: %s, duration, %ld, pos %d",
             psz_mrl, p_title, (long int) i_duration / 1000000 , i_pos );
  playlist_AddExt( p_playlist, psz_mrl, p_title, playlist_operation,
                         i_pos, i_duration , NULL, 0);

  if( i_pos == PLAYLIST_END ) i_pos = p_playlist->i_size - 1;

  vlc_mutex_lock( &p_playlist->object_lock );
  p_item = playlist_ItemGetByPos( p_playlist, i_pos );
  vlc_mutex_unlock( &p_playlist->object_lock );
  if( !p_item )
      return;

  vlc_mutex_lock( &p_item->lock );

  p_author =
    CDDAFormatStr( p_input, p_cdda,
                   config_GetPsz( p_input, MODULE_STRING "-author-format" ),
                   psz_mrl, i_track );

  playlist_ItemAddInfo( p_item ,  _("General"),_("Author"), p_author);

#ifdef HAVE_LIBCDDB
  if (p_cdda->i_cddb_enabled) {
    const char *psz_general_cat = _("General");

    playlist_ItemAddInfo( p_item, psz_general_cat, _("Album"),
                      "%s", p_cdda->cddb.disc->title);
    playlist_ItemAddInfo( p_item, psz_general_cat, _("Disc Artist(s)"),