1 /*****************************************************************************
2 * aout.c: audio output controls for the VLC playlist
3 *****************************************************************************
4 * Copyright (C) 2002-2012 VLC authors and VideoLAN
6 * Authors: Christophe Massiot <massiot@via.ecp.fr>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU Lesser General Public License as published by
10 * the Free Software Foundation; either version 2.1 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public License
19 * along with this program; if not, write to the Free Software Foundation,
20 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 *****************************************************************************/
29 #include <vlc_common.h>
31 #include <vlc_playlist.h>
33 #include "../audio_output/aout_internal.h"
34 #include "playlist_internal.h"
36 audio_output_t *playlist_GetAout(playlist_t *pl)
38 /* NOTE: it is assumed that the input resource exists. In practice,
39 * the playlist must have been activated. This is automatic when calling
40 * pl_Get(). FIXME: input resources are deleted at deactivation, this can
42 playlist_private_t *sys = pl_priv(pl);
43 return input_resource_HoldAout(sys->p_input_resource);
46 float playlist_VolumeGet (playlist_t *pl)
50 audio_output_t *aout = playlist_GetAout (pl);
53 volume = aout_VolumeGet (aout);
54 vlc_object_release (aout);
59 int playlist_VolumeSet (playlist_t *pl, float vol)
63 audio_output_t *aout = playlist_GetAout (pl);
66 ret = aout_VolumeSet (aout, vol);
67 vlc_object_release (aout);
74 * \param value how much to increase (> 0) or decrease (< 0) the volume
75 * \param volp if non-NULL, will contain contain the resulting volume
77 int playlist_VolumeUp (playlist_t *pl, int value, float *volp)
81 float stepSize = var_InheritFloat (pl, "volume-step") / (float)AOUT_VOLUME_DEFAULT;
83 float delta = value * stepSize;
85 audio_output_t *aout = playlist_GetAout (pl);
88 float vol = aout_VolumeGet (aout);
96 vol = (roundf (vol / stepSize)) * stepSize;
99 ret = aout_VolumeSet (aout, vol);
101 vlc_object_release (aout);
106 int playlist_MuteGet (playlist_t *pl)
110 audio_output_t *aout = playlist_GetAout (pl);
113 mute = aout_MuteGet (aout);
114 vlc_object_release (aout);
119 int playlist_MuteSet (playlist_t *pl, bool mute)
123 audio_output_t *aout = playlist_GetAout (pl);
126 ret = aout_MuteSet (aout, mute);
127 vlc_object_release (aout);
132 void playlist_EnableAudioFilter (playlist_t *pl, const char *name, bool add)
134 audio_output_t *aout = playlist_GetAout (pl);
136 aout_ChangeFilterString (VLC_OBJECT(pl), VLC_OBJECT(aout),
137 "audio-filter", name, add);
139 vlc_object_release (aout);