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vlc/src/control/audio.c

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/*****************************************************************************
* libvlc_audio.c: New libvlc audio control API
*****************************************************************************
* Copyright (C) 2006 the VideoLAN team
* $Id$
*
* Authors: Filippo Carone <filippo@carone.org>
* Jean-Paul Saman <jpsaman _at_ m2x _dot_ nl>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc/libvlc.h>
#include <vlc/libvlc_media.h>
#include <vlc/libvlc_media_player.h>
#include <vlc_common.h>
#include <vlc_input.h>
#include <vlc_aout.h>
#include "libvlc_internal.h"
#include "media_player_internal.h"
/*
* Remember to release the returned aout_instance_t since it is locked at
* the end of this function.
*/
static aout_instance_t *GetAOut( libvlc_instance_t *p_instance,
libvlc_exception_t *p_exception )
{
if( !p_instance )
return NULL;
aout_instance_t * p_aout = NULL;
p_aout = vlc_object_find( p_instance->p_libvlc_int, VLC_OBJECT_AOUT, FIND_CHILD );
if( !p_aout )
{
libvlc_exception_raise( p_exception );
libvlc_printerr( "No active audio output" );
return NULL;
}
return p_aout;
}
/*****************************************
* Get the list of available audio outputs
*****************************************/
libvlc_audio_output_t *
libvlc_audio_output_list_get( libvlc_instance_t *p_instance,
libvlc_exception_t *p_e )
{
VLC_UNUSED( p_instance );
libvlc_audio_output_t *p_list = NULL,
*p_actual = NULL,
*p_previous = NULL;
module_t **module_list = module_list_get( NULL );
for (size_t i = 0; module_list[i]; i++)
{
module_t *p_module = module_list[i];
if( module_provides( p_module, "audio output" ) )
{
if( p_actual == NULL)
{
p_actual = ( libvlc_audio_output_t * )
malloc( sizeof( libvlc_audio_output_t ) );
if( p_actual == NULL )
{
libvlc_exception_raise( p_e );
libvlc_printerr( "Not enough memory" );
libvlc_audio_output_list_release( p_list );
module_list_free( module_list );
return NULL;
}
if( p_list == NULL )
{
p_list = p_actual;
p_previous = p_actual;
}
}
p_actual->psz_name = strdup( module_get_object( p_module ) );
p_actual->psz_description = strdup( module_get_name( p_module, true ) );
p_actual->p_next = NULL;
if( p_previous != p_actual ) /* not first item */
p_previous->p_next = p_actual;
p_previous = p_actual;
p_actual = p_actual->p_next;
}
}
module_list_free( module_list );
return p_list;
}
/********************************************
* Free the list of available audio outputs
***********************************************/
void libvlc_audio_output_list_release( libvlc_audio_output_t *p_list )
{
libvlc_audio_output_t *p_actual, *p_before;
p_actual = p_list;
while ( p_actual )
{
free( p_actual->psz_name );
free( p_actual->psz_description );
p_before = p_actual;
p_actual = p_before->p_next;
free( p_before );
}
}
/***********************
* Set the audio output.
***********************/
int libvlc_audio_output_set( libvlc_instance_t *p_instance,
const char *psz_name )
{
if( module_exists( psz_name ) )
{
config_PutPsz( p_instance->p_libvlc_int, "aout", psz_name );
return true;
}
else
return false;
}
/****************************
* Get count of devices.
*****************************/
int libvlc_audio_output_device_count( libvlc_instance_t *p_instance,
const char *psz_audio_output )
{
char *psz_config_name;
if( !psz_audio_output )
return 0;
if( asprintf( &psz_config_name, "%s-audio-device", psz_audio_output ) == -1 )
return 0;
module_config_t *p_module_config = config_FindConfig(
VLC_OBJECT( p_instance->p_libvlc_int ), psz_config_name );
if( p_module_config && p_module_config->pf_update_list )
{
vlc_value_t val;
val.psz_string = strdup( p_module_config->value.psz );
p_module_config->pf_update_list(
VLC_OBJECT( p_instance->p_libvlc_int ), psz_config_name, val, val, NULL );
free( val.psz_string );
free( psz_config_name );
return p_module_config->i_list;
}
free( psz_config_name );
return 0;
}
/********************************
* Get long name of device
*********************************/
char * libvlc_audio_output_device_longname( libvlc_instance_t *p_instance,
const char *psz_audio_output,
int i_device )
{
char *psz_config_name;
if( !psz_audio_output )
return NULL;
if( asprintf( &psz_config_name, "%s-audio-device", psz_audio_output ) == -1 )
return NULL;
module_config_t *p_module_config = config_FindConfig(
VLC_OBJECT( p_instance->p_libvlc_int ), psz_config_name );
if( p_module_config )
{
// refresh if there arent devices
if( p_module_config->i_list < 2 && p_module_config->pf_update_list )
{
vlc_value_t val;
val.psz_string = strdup( p_module_config->value.psz );
p_module_config->pf_update_list(
VLC_OBJECT( p_instance->p_libvlc_int ), psz_config_name, val, val, NULL );
free( val.psz_string );
}
free( psz_config_name );
if( i_device >= 0 && i_device < p_module_config->i_list )
{
if( p_module_config->ppsz_list_text[i_device] )
return strdup( p_module_config->ppsz_list_text[i_device] );
else
return strdup( p_module_config->ppsz_list[i_device] );
}
}
free( psz_config_name );
return NULL;
}
/********************************
* Get id name of device
*********************************/
char * libvlc_audio_output_device_id( libvlc_instance_t *p_instance,
const char *psz_audio_output,
int i_device )
{
char *psz_config_name;
if( !psz_audio_output )
return NULL;
if( asprintf( &psz_config_name, "%s-audio-device", psz_audio_output ) == -1)
return NULL;
module_config_t *p_module_config = config_FindConfig(
VLC_OBJECT( p_instance->p_libvlc_int ), psz_config_name );
if( p_module_config )
{
// refresh if there arent devices
if( p_module_config->i_list < 2 && p_module_config->pf_update_list )
{
vlc_value_t val;
val.psz_string = strdup( p_module_config->value.psz );
p_module_config->pf_update_list(
VLC_OBJECT( p_instance->p_libvlc_int ), psz_config_name, val, val, NULL );
free( val.psz_string );
}
free( psz_config_name );
if( i_device >= 0 && i_device < p_module_config->i_list )
return strdup( p_module_config->ppsz_list[i_device] );
}
free( psz_config_name );
return NULL;
}
/*****************************
* Set device for using
*****************************/
void libvlc_audio_output_device_set( libvlc_instance_t *p_instance,
const char *psz_audio_output,
const char *psz_device_id )
{
char *psz_config_name = NULL;
if( !psz_audio_output || !psz_device_id )
return;
if( asprintf( &psz_config_name, "%s-audio-device", psz_audio_output ) == -1 )
return;
config_PutPsz( p_instance->p_libvlc_int, psz_config_name, psz_device_id );
free( psz_config_name );
}
/*****************************************************************************
* libvlc_audio_output_get_device_type : Get the current audio device type
*****************************************************************************/
int libvlc_audio_output_get_device_type( libvlc_instance_t *p_instance,
libvlc_exception_t *p_e )
{
aout_instance_t *p_aout = GetAOut( p_instance, p_e );
if( p_aout )
{
int i_device_type = var_GetInteger( p_aout, "audio-device" );
vlc_object_release( p_aout );
return i_device_type;
}
return libvlc_AudioOutputDevice_Error;
}
/*****************************************************************************
* libvlc_audio_output_set_device_type : Set the audio device type
*****************************************************************************/
void libvlc_audio_output_set_device_type( libvlc_instance_t *p_instance,
int device_type,
libvlc_exception_t *p_e )
{
aout_instance_t *p_aout = GetAOut( p_instance, p_e );
if( !p_aout )
return;
if( var_SetInteger( p_aout, "audio-device", device_type ) < 0 )
{
libvlc_exception_raise( p_e );
libvlc_printerr( "Error setting audio device" );
}
vlc_object_release( p_aout );
}
/*****************************************************************************
* libvlc_audio_get_mute : Get the volume state, true if muted
*****************************************************************************/
void libvlc_audio_toggle_mute( libvlc_instance_t *p_instance )
{
aout_ToggleMute( p_instance->p_libvlc_int, NULL );
}
int libvlc_audio_get_mute( libvlc_instance_t *p_instance )
{
return (libvlc_audio_get_volume(p_instance) == 0);
}
void libvlc_audio_set_mute( libvlc_instance_t *p_instance, int mute )
{
if ( !mute != !libvlc_audio_get_mute( p_instance ) )
{
aout_ToggleMute( p_instance->p_libvlc_int, NULL );
}
}
/*****************************************************************************
* libvlc_audio_get_volume : Get the current volume (range 0-200 %)
*****************************************************************************/
int libvlc_audio_get_volume( libvlc_instance_t *p_instance )
{
audio_volume_t i_volume;
aout_VolumeGet( p_instance->p_libvlc_int, &i_volume );
return (i_volume*200+AOUT_VOLUME_MAX/2)/AOUT_VOLUME_MAX;
}
/*****************************************************************************
* libvlc_audio_set_volume : Set the current volume
*****************************************************************************/
void libvlc_audio_set_volume( libvlc_instance_t *p_instance, int i_volume,
libvlc_exception_t *p_e )
{
if( i_volume >= 0 && i_volume <= 200 )
{
i_volume = (i_volume * AOUT_VOLUME_MAX + 100) / 200;
aout_VolumeSet( p_instance->p_libvlc_int, i_volume );
}
else
{
libvlc_exception_raise( p_e );
libvlc_printerr( "Volume out of range" );
}
}
/*****************************************************************************
* libvlc_audio_get_track_count : Get the number of available audio tracks
*****************************************************************************/
int libvlc_audio_get_track_count( libvlc_media_player_t *p_mi,
libvlc_exception_t *p_e )
{
input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
int i_track_count;
if( !p_input_thread )
return -1;
i_track_count = var_CountChoices( p_input_thread, "audio-es" );
vlc_object_release( p_input_thread );
return i_track_count;
}
/*****************************************************************************
* libvlc_audio_get_track_description : Get the description of available audio tracks
*****************************************************************************/
libvlc_track_description_t *
libvlc_audio_get_track_description( libvlc_media_player_t *p_mi,
libvlc_exception_t *p_e )
{
return libvlc_get_track_description( p_mi, "audio-es", p_e);
}
/*****************************************************************************
* libvlc_audio_get_track : Get the current audio track
*****************************************************************************/
int libvlc_audio_get_track( libvlc_media_player_t *p_mi,
libvlc_exception_t *p_e )
{
input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
vlc_value_t val_list;
vlc_value_t val;
int i_track = -1;
int i;
if( !p_input_thread )
return -1;
if( var_Get( p_input_thread, "audio-es", &val ) < 0 )
{
vlc_object_release( p_input_thread );
libvlc_exception_raise( p_e );
libvlc_printerr( "Audio track information not found" );
return -1;
}
var_Change( p_input_thread, "audio-es", VLC_VAR_GETCHOICES, &val_list, NULL );
for( i = 0; i < val_list.p_list->i_count; i++ )
{
if( val_list.p_list->p_values[i].i_int == val.i_int )
{
i_track = i;
break;
}
}
var_FreeList( &val_list, NULL );
vlc_object_release( p_input_thread );
return i_track;
}
/*****************************************************************************
* libvlc_audio_set_track : Set the current audio track
*****************************************************************************/
void libvlc_audio_set_track( libvlc_media_player_t *p_mi, int i_track,
libvlc_exception_t *p_e )
{
input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
vlc_value_t val_list;
vlc_value_t newval;
int i_ret = -1;
if( !p_input_thread )
return;
var_Change( p_input_thread, "audio-es", VLC_VAR_GETCHOICES, &val_list, NULL );
if( (i_track < 0) || (i_track > val_list.p_list->i_count) )
{
libvlc_exception_raise( p_e );
libvlc_printerr( "Audio track out of range" );
goto end;
}
newval = val_list.p_list->p_values[i_track];
i_ret = var_Set( p_input_thread, "audio-es", newval );
if( i_ret < 0 )
{
libvlc_exception_raise( p_e );
libvlc_printerr( "Audio track out of range" ); /* Race... */
}
end:
var_FreeList( &val_list, NULL );
vlc_object_release( p_input_thread );
}
/*****************************************************************************
* libvlc_audio_get_channel : Get the current audio channel
*****************************************************************************/
int libvlc_audio_get_channel( libvlc_instance_t *p_instance,
libvlc_exception_t *p_e )
{
aout_instance_t *p_aout = GetAOut( p_instance, p_e );
if( !p_aout )
return 0;
int val = var_GetInteger( p_aout, "audio-channels" );
vlc_object_release( p_aout );
return val;
}
/*****************************************************************************
* libvlc_audio_set_channel : Set the current audio channel
*****************************************************************************/
void libvlc_audio_set_channel( libvlc_instance_t *p_instance,
int channel,
libvlc_exception_t *p_e )
{
aout_instance_t *p_aout = GetAOut( p_instance, p_e );
if( !p_aout )
return;
if( var_SetInteger( p_aout, "audio-channels", channel ) < 0 )
{
libvlc_exception_raise( p_e );
libvlc_printerr( "Audio channel out of range" );
}
vlc_object_release( p_aout );
}
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