/* libquvi
* Copyright (C) 2012 Toni Gundogdu <legatvs@gmail.com>
*
* This file is part of libquvi <http://quvi.sourceforge.net/>.
*
* This library is free software: you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public
* License as published by the Free Software Foundation, either
* version 3 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General
* Public License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
/** @file playlist_get.c */
#include "config.h"
#include <glib.h>
#include "quvi.h"
/* -- */
#include "_quvi_s.h"
#include "_quvi_playlist_s.h"
/* Advances the current media pointer to the first media if undefined. */
static void _chk_curr_media(_quvi_playlist_t qp, _quvi_playlist_media_t *qpm)
{
if (qp->curr.media == NULL)
quvi_playlist_media_next(qp);
if (qp->curr.media != NULL)
*qpm = (_quvi_playlist_media_t) qp->curr.media->data;
}
static const gchar empty[] = "";
static QuviError _playlist_get(_quvi_playlist_t qp,
QuviPlaylistProperty n, ...)
{
_quvi_playlist_media_t qpm;
QuviError rc;
gdouble *dp;
va_list arg;
gchar **sp;
glong *lp;
gint type;
va_start(arg, n);
type = QUVI_PLAYLIST_PROPERTY_TYPE_MASK & (gint) n;
dp = NULL;
sp = NULL;
lp = NULL;
rc = QUVI_OK;
qpm = NULL;
switch (type)
{
case QUVI_PLAYLIST_PROPERTY_TYPE_STRING:
sp = va_arg(arg, gchar**);
if (sp == NULL)
rc = QUVI_ERROR_INVALID_ARG;
break;
case QUVI_PLAYLIST_PROPERTY_TYPE_LONG:
lp = va_arg(arg, glong*);
if (lp == NULL)
rc = QUVI_ERROR_INVALID_ARG;
break;
case QUVI_PLAYLIST_PROPERTY_TYPE_DOUBLE:
dp = va_arg(arg, gdouble*);
if (dp == NULL)
rc = QUVI_ERROR_INVALID_ARG;
break;
default:
rc = QUVI_ERROR_INVALID_ARG;
break;
}
va_end(arg);
if (rc != QUVI_OK)
return (rc);
switch (n)
{
case QUVI_PLAYLIST_PROPERTY_THUMBNAIL_URL:
*sp = qp->url.thumbnail->str;
break;
case QUVI_PLAYLIST_PROPERTY_TITLE:
*sp = qp->title->str;
break;
case QUVI_PLAYLIST_PROPERTY_ID:
*sp = qp->id.playlist->str;
break;
/*
* (Playlist) Media properties.
*
* quvi_playlist_get is expected to return the property values for
* the first media the playlist script returned, just like
* quvi_media_get does with media scripts. We must mimic this
* behaviour by first attempting to move to the first item in the
* playlist media list.
*
* Unlike with quvi_media_get, playlist scripts are allowed to return
* nothing. Media scripts are expected to return at least one media
* stream.
*
* This means that if the playlist script did not return any such
* properties (e.g. media URL):
* - returned strings must be set to empty ("")
* - returned numeric values must be set to 0
*/
case QUVI_PLAYLIST_MEDIA_PROPERTY_TITLE:
_chk_curr_media(qp, &qpm);
*sp = (qpm != NULL) ? qpm->title->str : (gchar*) empty;
break;
case QUVI_PLAYLIST_MEDIA_PROPERTY_URL:
_chk_curr_media(qp, &qpm);
*sp = (qpm != NULL) ? qpm->url->str : (gchar*) empty;
break;
case QUVI_PLAYLIST_MEDIA_PROPERTY_DURATION_MS:
_chk_curr_media(qp, &qpm);
*dp = (qpm != NULL) ? qpm->duration_ms : 0;
break;
default:
rc = QUVI_ERROR_INVALID_ARG;
break;
}
return (rc);
}
/** @brief Return a playlist property
@sa @ref parse_playlist
@ingroup playlistprop
@note URLs will be returned in the escaped form
*/
void quvi_playlist_get(quvi_playlist_t handle,
QuviPlaylistProperty property, ...)
{
_quvi_playlist_t qp;
va_list arg;
gpointer p;
_quvi_t q;
/* If G_DISABLE_CHECKS is defined then the check is not performed. */
g_return_if_fail(handle != NULL);
va_start(arg, property);
p = va_arg(arg, gpointer);
va_end(arg);
qp = (_quvi_playlist_t) handle;
q = qp->handle.quvi;
q->status.rc = _playlist_get(qp, property, p);
}
/* vim: set ts=2 sw=2 tw=72 expandtab: */