st-preselections.c

来自「linux下网络收音机的源码」· C语言 代码 · 共 545 行 · 第 1/2 页

  st_stream_free((STStream *) stream);
}

static gboolean
st_preselections_stream_tune_in_cb (STPreselectionsStream *stream,
				    gpointer data,
				    GError **err)
{
  if (! stream->url)
    {
      g_set_error(err, 0, 0, _("the stream URL is not set"));
      return FALSE;
    }

  return st_action_run("play-stream", stream->url, err);
}

static gboolean
st_preselections_stream_record_cb (STPreselectionsStream *stream,
				   gpointer data,
				   GError **err)
{
  if (! stream->url)
    {
      g_set_error(err, 0, 0, _("the stream URL is not set"));
      return FALSE;
    }

  return st_action_run("record-stream", stream->url, err);
}

static gboolean
st_preselections_stream_browse_cb (STPreselectionsStream *stream,
				   gpointer data,
				   GError **err)
{
  if (! stream->homepage)
    {
      g_set_error(err, 0, 0, _("the stream homepage is not set"));
      return FALSE;
    }

  return st_action_run("view-web", stream->homepage, err);
}

static void
st_preselections_init_handler (void)
{
  GdkPixbuf *pixbuf;
  STHandlerField *field;

  st_preselections_handler = st_handler_new("preselections");

  st_handler_set_label(st_preselections_handler, _("Preselections"));
  st_handler_set_copyright(st_preselections_handler, "Copyright \302\251 2004 Jean-Yves Lefort");
  st_handler_set_description(st_preselections_handler, _("Manually Edited Streams"));
  st_handler_set_flags(st_preselections_handler, ST_HANDLER_NO_CATEGORIES);

  pixbuf = st_pixbuf_new_from_file(ST_PNG("preselections"));
  if (pixbuf)
    {
      st_handler_set_icon_from_pixbuf(st_preselections_handler, pixbuf);
      g_object_unref(pixbuf);
    }
  
  st_handler_bind(st_preselections_handler, ST_HANDLER_EVENT_STREAM_NEW, st_preselections_stream_new_cb, NULL);
  st_handler_bind(st_preselections_handler, ST_HANDLER_EVENT_STREAM_FIELD_GET, st_preselections_stream_field_get_cb, NULL);
  st_handler_bind(st_preselections_handler, ST_HANDLER_EVENT_STREAM_FIELD_SET, st_preselections_stream_field_set_cb, NULL);
  st_handler_bind(st_preselections_handler, ST_HANDLER_EVENT_STREAM_STOCK_FIELD_GET, st_preselections_stream_stock_field_get_cb, NULL);
  st_handler_bind(st_preselections_handler, ST_HANDLER_EVENT_STREAM_MODIFY, st_preselections_stream_modify_cb, NULL);
  st_handler_bind(st_preselections_handler, ST_HANDLER_EVENT_STREAM_DELETE, st_preselections_stream_delete_cb, NULL);
  st_handler_bind(st_preselections_handler, ST_HANDLER_EVENT_STREAM_FREE, st_preselections_stream_free_cb, NULL);

  st_handler_bind(st_preselections_handler, ST_HANDLER_EVENT_STREAM_TUNE_IN, st_preselections_stream_tune_in_cb, NULL);
  st_handler_bind(st_preselections_handler, ST_HANDLER_EVENT_STREAM_RECORD, st_preselections_stream_record_cb, NULL);
  st_handler_bind(st_preselections_handler, ST_HANDLER_EVENT_STREAM_BROWSE, st_preselections_stream_browse_cb, NULL);

  field = st_handler_field_new(FIELD_NAME,
			       _("Name"),
			       G_TYPE_STRING,
			       ST_HANDLER_FIELD_VISIBLE
			       | ST_HANDLER_FIELD_EDITABLE);
  st_handler_field_set_description(field, _("The preselection name"));
  st_handler_add_field(st_preselections_handler, field);

  field = st_handler_field_new(FIELD_GENRE,
			       _("Genre"),
			       G_TYPE_STRING,
			       ST_HANDLER_FIELD_VISIBLE
			       | ST_HANDLER_FIELD_EDITABLE);
  st_handler_field_set_description(field, _("The preselection genre"));
  st_handler_add_field(st_preselections_handler, field);

  field = st_handler_field_new(FIELD_HOMEPAGE,
			       _("Homepage"),
			       G_TYPE_STRING,
			       ST_HANDLER_FIELD_VISIBLE
			       | ST_HANDLER_FIELD_EDITABLE
			       | ST_HANDLER_FIELD_START_HIDDEN);
  st_handler_field_set_description(field, _("The preselection homepage URL"));
  st_handler_add_field(st_preselections_handler, field);

  field = st_handler_field_new(FIELD_URL,
			       _("URL"),
			       G_TYPE_STRING,
			       ST_HANDLER_FIELD_VISIBLE
			       | ST_HANDLER_FIELD_EDITABLE
			       | ST_HANDLER_FIELD_START_HIDDEN);
  st_handler_field_set_description(field, _("The preselection listen URL"));
  st_handler_add_field(st_preselections_handler, field);

  st_handlers_add(st_preselections_handler);
}

void
st_preselections_init (void)
{
  st_preselections_init_handler();
  
  st_action_register("play-stream", _("Listen to a stream"), "xmms %q");
  st_action_register("record-stream", _("Record a stream"), "xterm -e streamripper %q");
  st_action_register("view-web", _("Open a web page"), "epiphany %q");
}

void
st_preselections_add_stock (void)
{
  STStreamStore *preselections;

  preselections = st_handler_get_streams(st_preselections_handler, ST_CATEGORY_BAG_MAIN);
  if (! preselections)
    {
      int i;
      const struct 
      {
	const char	*name;
	const char	*genre;
	const char	*homepage;
	const char	*url;
      } entries[] = {
	{
	  "Virgin Radio 1215AM",
	  "Eclectic",
	  "http://www.virginradio.co.uk/",
	  "http://ogg.smgradio.com/vr160.ogg"
	},
	{
	  "Virgin Radio Classic Rock",
	  "Classic Rock",
	  "http://www.virginradio.co.uk/",
	  "http://ogg.smgradio.com/vc160.ogg"
	},
	{
	  "The Virgin Radio Groove",
	  "Soul",
	  "http://www.virginradio.co.uk/",
	  "http://ogg.smgradio.com/gr160.ogg"
	},
	{
	  "Kill Radio",
	  "Eclectic",
	  "http://www.killradio.org/",
	  "http://slaptech.net:8000/killradio64.mp3"
	},
	{
	  "DFM Radio Television International",
	  "Alternative, Experimental",
	  "http://dfm.nu/",
	  "http://194.109.209.34:8000/dfm_1"
	},
	{
	  "Blazeradio",
	  "Eclectic",
	  "http://blazeradio.newsroom.uab.edu/",
	  "http://blazeradio.newsroom.uab.edu:8000"
	}
      };
	    
      preselections = st_stream_store_new(st_preselections_handler);

      for (i = 0; i < G_N_ELEMENTS(entries); i++)
	{
	  STStreamBag *stream_bag = st_stream_bag_new(st_preselections_handler);

	  ST_PRESELECTIONS_STREAM(stream_bag)->name = g_strdup(entries[i].name);
	  ST_PRESELECTIONS_STREAM(stream_bag)->genre = g_strdup(entries[i].genre);
	  ST_PRESELECTIONS_STREAM(stream_bag)->homepage = g_strdup(entries[i].homepage);
	  ST_PRESELECTIONS_STREAM(stream_bag)->url = g_strdup(entries[i].url);
	  ST_STREAM(stream_bag)->name = g_strdup_printf("%i", i);

	  st_stream_store_append(preselections, stream_bag);
	  g_object_unref(stream_bag);
	}

      st_handler_set_streams(st_preselections_handler, ST_CATEGORY_BAG_MAIN, preselections);
    }

  g_object_unref(preselections);
}

static void
st_preselections_make_unique_names (STStreamBag *bag, STStreamStore *preselections)
{
  MakeUniqueInfo info = { bag };
  int i;

  g_return_if_fail(ST_IS_STREAM_BAG(bag));
  g_return_if_fail(ST_IS_STREAM_STORE(preselections));

  i = 0;
  do
    {
      g_free(ST_STREAM(bag)->name);
      ST_STREAM(bag)->name = g_strdup_printf("%i", i++);

      info.taken = FALSE;
      st_stream_store_foreach(preselections, st_preselections_make_unique_name_cb, &info);
    }
  while (info.taken);

  i = 0;
  do
    {
      g_free(ST_PRESELECTIONS_STREAM(bag)->name);
      ST_PRESELECTIONS_STREAM(bag)->name = ++i == 1
	? g_strdup(_("Unnamed preselection"))
	: g_strdup_printf(_("Unnamed preselection #%i"), i);

      info.taken = FALSE;
      st_stream_store_foreach(preselections, st_preselections_make_unique_visible_name_cb, &info);
    }
  while (info.taken);
}

static gboolean
st_preselections_make_unique_name_cb (STStreamStore *store,
				      STStreamBag *bag,
				      gpointer data)
{
  MakeUniqueInfo *info = data;
  return info->taken = ! strcmp(ST_STREAM(bag)->name, ST_STREAM(info->bag)->name);
}

static gboolean
st_preselections_make_unique_visible_name_cb (STStreamStore *store,
					      STStreamBag *bag,
					      gpointer data)
{
  MakeUniqueInfo *info = data;
  return info->taken = ! strcmp(ST_PRESELECTIONS_STREAM(bag)->name, ST_PRESELECTIONS_STREAM(info->bag)->name);
}

STStreamBag *
st_preselections_new (void)
{
  STStreamStore *preselections;
  STStreamBag *stream_bag;
  
  preselections = st_handler_get_streams(st_preselections_handler, ST_CATEGORY_BAG_MAIN);
  g_return_val_if_fail(preselections != NULL, NULL);

  stream_bag = st_stream_bag_new(st_preselections_handler);
  st_preselections_make_unique_names(stream_bag, preselections);

  st_stream_store_append(preselections, stream_bag);
  st_stream_store_touch(preselections);
  g_object_unref(preselections);

  /* we don't unref stream_bag, that's caller's responsability */
  return stream_bag;
}