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 *****************************************************************************/
27 #include <vlc_common.h>
29 #include <vlc_playlist.h>
31 #include "../audio_output/aout_internal.h"
32 #include "playlist_internal.h"
34 audio_output_t *playlist_GetAout(playlist_t *pl)
36 /* NOTE: it is assumed that the input resource exists. In practice,
37 * the playlist must have been activated. This is automatic when calling
38 * pl_Get(). FIXME: input resources are deleted at deactivation, this can
40 playlist_private_t *sys = pl_priv(pl);
41 return input_resource_HoldAout(sys->p_input_resource);
44 float playlist_VolumeGet (playlist_t *pl)
48 audio_output_t *aout = playlist_GetAout (pl);
51 volume = aout_VolumeGet (aout);
52 vlc_object_release (aout);
57 int playlist_VolumeSet (playlist_t *pl, float vol)
61 audio_output_t *aout = playlist_GetAout (pl);
64 ret = aout_VolumeSet (aout, vol);
65 vlc_object_release (aout);
72 * \param value how much to increase (> 0) or decrease (< 0) the volume
73 * \param volp if non-NULL, will contain contain the resulting volume
75 int playlist_VolumeUp (playlist_t *pl, int value, float *volp)
79 float delta = value * var_InheritFloat (pl, "volume-step");
81 audio_output_t *aout = playlist_GetAout (pl);
84 float vol = aout_VolumeGet (aout);
87 vol += delta / (float)AOUT_VOLUME_DEFAULT;
94 ret = aout_VolumeSet (aout, vol);
96 vlc_object_release (aout);
101 int playlist_MuteGet (playlist_t *pl)
105 audio_output_t *aout = playlist_GetAout (pl);
108 mute = aout_MuteGet (aout);
109 vlc_object_release (aout);
114 int playlist_MuteSet (playlist_t *pl, bool mute)
118 audio_output_t *aout = playlist_GetAout (pl);
121 ret = aout_MuteSet (aout, mute);
122 vlc_object_release (aout);
127 void playlist_EnableAudioFilter (playlist_t *pl, const char *name, bool add)
129 audio_output_t *aout = playlist_GetAout (pl);
131 if (aout_ChangeFilterString (VLC_OBJECT(pl), VLC_OBJECT(aout),
132 "audio-filter", name, add))
135 aout_InputRequestRestart (aout);
138 vlc_object_release (aout);