1 /*****************************************************************************
2 * libvlc_audio.c: New libvlc audio control API
3 *****************************************************************************
4 * Copyright (C) 2006 the VideoLAN team
7 * Authors: Filippo Carone <filippo@carone.org>
8 * Jean-Paul Saman <jpsaman _at_ m2x _dot_ nl>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 #include "libvlc_internal.h"
26 #include <vlc/libvlc.h>
28 #include <vlc_input.h>
33 * Remember to release the returned aout_instance_t since it is locked at
34 * the end of this function.
36 static aout_instance_t *GetAOut( libvlc_instance_t *p_instance,
37 libvlc_exception_t *p_exception )
39 aout_instance_t * p_aout = NULL;
41 p_aout = vlc_object_find( p_instance->p_libvlc_int, VLC_OBJECT_AOUT, FIND_CHILD );
44 libvlc_exception_raise( p_exception, "No active audio output" );
52 /*****************************************************************************
53 * libvlc_audio_get_mute : Get the volume state, true if muted
54 *****************************************************************************/
55 void libvlc_audio_toggle_mute( libvlc_instance_t *p_instance,
56 libvlc_exception_t *p_e )
58 aout_VolumeMute( p_instance->p_libvlc_int, NULL );
61 vlc_bool_t libvlc_audio_get_mute( libvlc_instance_t *p_instance,
62 libvlc_exception_t *p_e )
65 * If the volume level is 0, then the channel is muted
67 audio_volume_t i_volume;
69 i_volume = libvlc_audio_get_volume(p_instance, p_e);
75 void libvlc_audio_set_mute( libvlc_instance_t *p_instance, vlc_bool_t mute,
76 libvlc_exception_t *p_e )
78 if ( mute ^ libvlc_audio_get_mute( p_instance, p_e ) )
80 aout_VolumeMute( p_instance->p_libvlc_int, NULL );
84 /*****************************************************************************
85 * libvlc_audio_get_volume : Get the current volume (range 0-200 %)
86 *****************************************************************************/
87 int libvlc_audio_get_volume( libvlc_instance_t *p_instance,
88 libvlc_exception_t *p_e )
90 audio_volume_t i_volume;
92 aout_VolumeGet( p_instance->p_libvlc_int, &i_volume );
94 return (i_volume*200+AOUT_VOLUME_MAX/2)/AOUT_VOLUME_MAX;
98 /*****************************************************************************
99 * libvlc_audio_set_volume : Set the current volume
100 *****************************************************************************/
101 void libvlc_audio_set_volume( libvlc_instance_t *p_instance, int i_volume,
102 libvlc_exception_t *p_e )
104 if( i_volume >= 0 && i_volume <= 200 )
106 i_volume = (i_volume * AOUT_VOLUME_MAX + 100) / 200;
108 aout_VolumeSet( p_instance->p_libvlc_int, i_volume );
112 libvlc_exception_raise( p_e, "Volume out of range" );
116 /*****************************************************************************
117 * libvlc_audio_get_track_count : Get the number of available audio tracks
118 *****************************************************************************/
119 int libvlc_audio_get_track_count( libvlc_media_instance_t *p_mi,
120 libvlc_exception_t *p_e )
122 input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
123 vlc_value_t val_list;
125 if( !p_input_thread )
128 var_Change( p_input_thread, "audio-es", VLC_VAR_GETCHOICES, &val_list, NULL );
129 vlc_object_release( p_input_thread );
130 return val_list.p_list->i_count;
133 /*****************************************************************************
134 * libvlc_audio_get_track : Get the current audio track
135 *****************************************************************************/
136 int libvlc_audio_get_track( libvlc_media_instance_t *p_mi,
137 libvlc_exception_t *p_e )
139 input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
140 vlc_value_t val_list;
146 if( !p_input_thread )
149 i_ret = var_Get( p_input_thread, "audio-es", &val );
152 libvlc_exception_raise( p_e, "Getting Audio track information failed" );
153 vlc_object_release( p_input_thread );
157 var_Change( p_input_thread, "audio-es", VLC_VAR_GETCHOICES, &val_list, NULL );
158 for( i = 0; i < val_list.p_list->i_count; i++ )
160 vlc_value_t track_val = val_list.p_list->p_values[i];
161 if( track_val.i_int == val.i_int )
167 vlc_object_release( p_input_thread );
172 /*****************************************************************************
173 * libvlc_audio_set_track : Set the current audio track
174 *****************************************************************************/
175 void libvlc_audio_set_track( libvlc_media_instance_t *p_mi, int i_track,
176 libvlc_exception_t *p_e )
178 input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
179 vlc_value_t val_list;
183 if( !p_input_thread )
186 var_Change( p_input_thread, "audio-es", VLC_VAR_GETCHOICES, &val_list, NULL );
187 for( i = 0; i < val_list.p_list->i_count; i++ )
189 vlc_value_t val = val_list.p_list->p_values[i];
192 i_ret = var_Set( p_input_thread, "audio-es", val );
195 libvlc_exception_raise( p_e, "Setting audio track failed" );
197 vlc_object_release( p_input_thread );
201 libvlc_exception_raise( p_e, "Audio track out of range" );
202 vlc_object_release( p_input_thread );
205 /*****************************************************************************
206 * libvlc_audio_get_channel : Get the current audio channel
207 *****************************************************************************/
208 int libvlc_audio_get_channel( libvlc_instance_t *p_instance,
209 libvlc_exception_t *p_e )
211 aout_instance_t *p_aout = GetAOut( p_instance, p_e );
216 var_Get( p_aout, "audio-channels", &val );
217 vlc_object_release( p_aout );
223 /*****************************************************************************
224 * libvlc_audio_set_channel : Set the current audio channel
225 *****************************************************************************/
226 void libvlc_audio_set_channel( libvlc_instance_t *p_instance, int i_channel,
227 libvlc_exception_t *p_e )
229 aout_instance_t *p_aout = GetAOut( p_instance, p_e );
235 val.i_int = i_channel;
238 case AOUT_VAR_CHAN_RSTEREO:
239 case AOUT_VAR_CHAN_STEREO:
240 case AOUT_VAR_CHAN_LEFT:
241 case AOUT_VAR_CHAN_RIGHT:
242 case AOUT_VAR_CHAN_DOLBYS:
243 i_ret = var_Set( p_aout, "audio-channels", val );
246 libvlc_exception_raise( p_e, "Failed setting audio channel" );
247 vlc_object_release( p_aout );
250 vlc_object_release( p_aout );
253 libvlc_exception_raise( p_e, "Audio channel out of range" );
256 vlc_object_release( p_aout );