mirror of https://code.videolan.org/videolan/vlc
520 lines
17 KiB
C
520 lines
17 KiB
C
/*****************************************************************************
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* libvlc_audio.c: New libvlc audio control API
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*****************************************************************************
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* Copyright (C) 2006 VLC authors and VideoLAN
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* $Id$
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*
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* Authors: Filippo Carone <filippo@carone.org>
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* Jean-Paul Saman <jpsaman _at_ m2x _dot_ nl>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <assert.h>
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#include <vlc/libvlc.h>
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#include <vlc/libvlc_media.h>
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#include <vlc/libvlc_media_player.h>
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#include <vlc_common.h>
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#include <vlc_input.h>
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#include <vlc_aout_intf.h>
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#include <vlc_aout.h>
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#include <vlc_modules.h>
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#include "libvlc_internal.h"
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#include "media_player_internal.h"
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/*
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* Remember to release the returned audio_output_t since it is locked at
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* the end of this function.
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*/
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static audio_output_t *GetAOut( libvlc_media_player_t *mp )
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{
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assert( mp != NULL );
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input_thread_t *p_input = libvlc_get_input_thread( mp );
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if( p_input == NULL )
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return NULL;
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audio_output_t * p_aout = input_GetAout( p_input );
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vlc_object_release( p_input );
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if( p_aout == NULL )
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libvlc_printerr( "No active audio output" );
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return p_aout;
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}
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/*****************************************
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* Get the list of available audio outputs
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*****************************************/
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libvlc_audio_output_t *
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libvlc_audio_output_list_get( libvlc_instance_t *p_instance )
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{
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VLC_UNUSED( p_instance );
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libvlc_audio_output_t *p_list = NULL,
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*p_actual = NULL,
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*p_previous = NULL;
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module_t **module_list = module_list_get( NULL );
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for (size_t i = 0; module_list[i]; i++)
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{
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module_t *p_module = module_list[i];
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if( module_provides( p_module, "audio output" ) )
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{
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if( p_actual == NULL)
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{
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p_actual = ( libvlc_audio_output_t * )
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malloc( sizeof( libvlc_audio_output_t ) );
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if( p_actual == NULL )
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{
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libvlc_printerr( "Not enough memory" );
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libvlc_audio_output_list_release( p_list );
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module_list_free( module_list );
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return NULL;
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}
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if( p_list == NULL )
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{
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p_list = p_actual;
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p_previous = p_actual;
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}
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}
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p_actual->psz_name = strdup( module_get_object( p_module ) );
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p_actual->psz_description = strdup( module_get_name( p_module, true ) );
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p_actual->p_next = NULL;
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if( p_previous != p_actual ) /* not first item */
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p_previous->p_next = p_actual;
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p_previous = p_actual;
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p_actual = p_actual->p_next;
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}
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}
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module_list_free( module_list );
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return p_list;
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}
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/********************************************
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* Free the list of available audio outputs
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***********************************************/
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void libvlc_audio_output_list_release( libvlc_audio_output_t *p_list )
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{
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libvlc_audio_output_t *p_actual, *p_before;
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p_actual = p_list;
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while ( p_actual )
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{
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free( p_actual->psz_name );
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free( p_actual->psz_description );
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p_before = p_actual;
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p_actual = p_before->p_next;
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free( p_before );
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}
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}
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/***********************
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* Set the audio output.
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***********************/
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int libvlc_audio_output_set( libvlc_media_player_t *mp, const char *psz_name )
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{
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char *value;
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if( !module_exists( psz_name )
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|| asprintf( &value, "%s,none", psz_name ) == -1 )
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return -1;
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var_SetString( mp, "aout", value );
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free( value );
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return 0;
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}
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/****************************
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* Get count of devices.
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*****************************/
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int libvlc_audio_output_device_count( libvlc_instance_t *p_instance,
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const char *psz_audio_output )
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{
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char *psz_config_name;
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if( !psz_audio_output )
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return 0;
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if( asprintf( &psz_config_name, "%s-audio-device", psz_audio_output ) == -1 )
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return 0;
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module_config_t *p_module_config = config_FindConfig(
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VLC_OBJECT( p_instance->p_libvlc_int ), psz_config_name );
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if( p_module_config && p_module_config->pf_update_list )
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{
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vlc_value_t val;
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val.psz_string = strdup( p_module_config->value.psz );
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p_module_config->pf_update_list(
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VLC_OBJECT( p_instance->p_libvlc_int ), psz_config_name, val, val, NULL );
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free( val.psz_string );
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free( psz_config_name );
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return p_module_config->i_list;
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}
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free( psz_config_name );
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return 0;
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}
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/********************************
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* Get long name of device
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*********************************/
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char * libvlc_audio_output_device_longname( libvlc_instance_t *p_instance,
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const char *psz_audio_output,
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int i_device )
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{
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char *psz_config_name;
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if( !psz_audio_output )
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return NULL;
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if( asprintf( &psz_config_name, "%s-audio-device", psz_audio_output ) == -1 )
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return NULL;
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module_config_t *p_module_config = config_FindConfig(
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VLC_OBJECT( p_instance->p_libvlc_int ), psz_config_name );
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if( p_module_config )
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{
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// refresh if there arent devices
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if( p_module_config->i_list < 2 && p_module_config->pf_update_list )
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{
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vlc_value_t val;
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val.psz_string = strdup( p_module_config->value.psz );
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p_module_config->pf_update_list(
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VLC_OBJECT( p_instance->p_libvlc_int ), psz_config_name, val, val, NULL );
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free( val.psz_string );
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}
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if( i_device >= 0 && i_device < p_module_config->i_list )
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{
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free( psz_config_name );
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if( p_module_config->ppsz_list_text[i_device] )
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return strdup( p_module_config->ppsz_list_text[i_device] );
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else
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return strdup( p_module_config->ppsz_list[i_device] );
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}
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}
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free( psz_config_name );
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return NULL;
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}
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/********************************
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* Get id name of device
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*********************************/
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char * libvlc_audio_output_device_id( libvlc_instance_t *p_instance,
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const char *psz_audio_output,
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int i_device )
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{
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char *psz_config_name;
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if( !psz_audio_output )
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return NULL;
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if( asprintf( &psz_config_name, "%s-audio-device", psz_audio_output ) == -1)
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return NULL;
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module_config_t *p_module_config = config_FindConfig(
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VLC_OBJECT( p_instance->p_libvlc_int ), psz_config_name );
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if( p_module_config )
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{
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// refresh if there arent devices
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if( p_module_config->i_list < 2 && p_module_config->pf_update_list )
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{
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vlc_value_t val;
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val.psz_string = strdup( p_module_config->value.psz );
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p_module_config->pf_update_list(
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VLC_OBJECT( p_instance->p_libvlc_int ), psz_config_name, val, val, NULL );
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free( val.psz_string );
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}
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if( i_device >= 0 && i_device < p_module_config->i_list )
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{
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free( psz_config_name );
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return strdup( p_module_config->ppsz_list[i_device] );
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}
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}
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free( psz_config_name );
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return NULL;
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}
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/*****************************
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* Set device for using
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*****************************/
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void libvlc_audio_output_device_set( libvlc_media_player_t *mp,
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const char *psz_audio_output,
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const char *psz_device_id )
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{
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char *psz_config_name;
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if( !psz_audio_output || !psz_device_id )
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return;
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if( asprintf( &psz_config_name, "%s-audio-device", psz_audio_output ) == -1 )
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return;
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if( !var_Type( mp, psz_config_name ) )
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/* Don't recreate the same variable over and over and over... */
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var_Create( mp, psz_config_name, VLC_VAR_STRING );
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var_SetString( mp, psz_config_name, psz_device_id );
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free( psz_config_name );
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}
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/*****************************************************************************
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* libvlc_audio_output_get_device_type : Get the current audio device type
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*****************************************************************************/
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int libvlc_audio_output_get_device_type( libvlc_media_player_t *mp )
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{
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audio_output_t *p_aout = GetAOut( mp );
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if( p_aout )
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{
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int i_device_type = var_GetInteger( p_aout, "audio-device" );
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vlc_object_release( p_aout );
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return i_device_type;
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}
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return libvlc_AudioOutputDevice_Error;
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}
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/*****************************************************************************
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* libvlc_audio_output_set_device_type : Set the audio device type
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*****************************************************************************/
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void libvlc_audio_output_set_device_type( libvlc_media_player_t *mp,
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int device_type )
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{
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audio_output_t *p_aout = GetAOut( mp );
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if( !p_aout )
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return;
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if( var_SetInteger( p_aout, "audio-device", device_type ) < 0 )
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libvlc_printerr( "Error setting audio device" );
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vlc_object_release( p_aout );
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}
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/*****************************************************************************
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* libvlc_audio_get_mute : Get the volume state, true if muted
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*****************************************************************************/
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void libvlc_audio_toggle_mute( libvlc_media_player_t *mp )
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{
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aout_ToggleMute( mp, NULL );
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}
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int libvlc_audio_get_mute( libvlc_media_player_t *mp )
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{
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return aout_IsMuted( VLC_OBJECT(mp) );
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}
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void libvlc_audio_set_mute( libvlc_media_player_t *mp, int mute )
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{
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aout_SetMute( VLC_OBJECT(mp), NULL, !!mute );
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}
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/*****************************************************************************
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* libvlc_audio_get_volume : Get the current volume
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*****************************************************************************/
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int libvlc_audio_get_volume( libvlc_media_player_t *mp )
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{
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unsigned volume = aout_VolumeGet( mp );
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return (volume * 100 + AOUT_VOLUME_DEFAULT / 2) / AOUT_VOLUME_DEFAULT;
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}
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/*****************************************************************************
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* libvlc_audio_set_volume : Set the current volume
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*****************************************************************************/
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int libvlc_audio_set_volume( libvlc_media_player_t *mp, int volume )
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{
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volume = (volume * AOUT_VOLUME_DEFAULT + 50) / 100;
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if (volume < 0 || volume > AOUT_VOLUME_MAX)
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{
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libvlc_printerr( "Volume out of range" );
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return -1;
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}
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aout_VolumeSet (mp, volume);
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return 0;
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}
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/*****************************************************************************
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* libvlc_audio_get_track_count : Get the number of available audio tracks
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*****************************************************************************/
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int libvlc_audio_get_track_count( libvlc_media_player_t *p_mi )
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{
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input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
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int i_track_count;
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if( !p_input_thread )
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return -1;
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i_track_count = var_CountChoices( p_input_thread, "audio-es" );
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vlc_object_release( p_input_thread );
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return i_track_count;
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}
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/*****************************************************************************
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* libvlc_audio_get_track_description : Get the description of available audio tracks
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*****************************************************************************/
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libvlc_track_description_t *
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libvlc_audio_get_track_description( libvlc_media_player_t *p_mi )
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{
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return libvlc_get_track_description( p_mi, "audio-es" );
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}
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/*****************************************************************************
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* libvlc_audio_get_track : Get the current audio track
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*****************************************************************************/
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int libvlc_audio_get_track( libvlc_media_player_t *p_mi )
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{
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input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
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vlc_value_t val_list;
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vlc_value_t val;
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int i_track = -1;
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int i;
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if( !p_input_thread )
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return -1;
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if( var_Get( p_input_thread, "audio-es", &val ) < 0 )
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{
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vlc_object_release( p_input_thread );
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libvlc_printerr( "Audio track information not found" );
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return -1;
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}
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var_Change( p_input_thread, "audio-es", VLC_VAR_GETCHOICES, &val_list, NULL );
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for( i = 0; i < val_list.p_list->i_count; i++ )
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{
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if( val_list.p_list->p_values[i].i_int == val.i_int )
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{
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i_track = i;
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break;
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}
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}
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var_FreeList( &val_list, NULL );
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vlc_object_release( p_input_thread );
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return i_track;
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}
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/*****************************************************************************
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* libvlc_audio_set_track : Set the current audio track
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*****************************************************************************/
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int libvlc_audio_set_track( libvlc_media_player_t *p_mi, int i_track )
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{
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input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
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vlc_value_t val_list;
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vlc_value_t newval;
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int i_ret;
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if( !p_input_thread )
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return -1;
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var_Change( p_input_thread, "audio-es", VLC_VAR_GETCHOICES, &val_list, NULL );
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if( (i_track < 0) || (i_track > val_list.p_list->i_count) )
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{
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libvlc_printerr( "Audio track out of range" );
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i_ret = -1;
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goto end;
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}
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newval = val_list.p_list->p_values[i_track];
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i_ret = var_Set( p_input_thread, "audio-es", newval );
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if( i_ret < 0 )
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{
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libvlc_printerr( "Audio track out of range" ); /* Race... */
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i_ret = -1;
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goto end;
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}
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i_ret = 0;
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end:
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var_FreeList( &val_list, NULL );
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vlc_object_release( p_input_thread );
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return i_ret;
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}
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/*****************************************************************************
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* libvlc_audio_get_channel : Get the current audio channel
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*****************************************************************************/
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int libvlc_audio_get_channel( libvlc_media_player_t *mp )
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{
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audio_output_t *p_aout = GetAOut( mp );
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if( !p_aout )
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return 0;
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int val = var_GetInteger( p_aout, "audio-channels" );
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vlc_object_release( p_aout );
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return val;
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}
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/*****************************************************************************
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* libvlc_audio_set_channel : Set the current audio channel
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*****************************************************************************/
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int libvlc_audio_set_channel( libvlc_media_player_t *mp, int channel )
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{
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audio_output_t *p_aout = GetAOut( mp );
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int ret = 0;
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if( !p_aout )
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return -1;
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if( var_SetInteger( p_aout, "audio-channels", channel ) < 0 )
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{
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libvlc_printerr( "Audio channel out of range" );
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ret = -1;
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}
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vlc_object_release( p_aout );
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return ret;
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}
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/*****************************************************************************
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* libvlc_audio_get_delay : Get the current audio delay
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*****************************************************************************/
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int64_t libvlc_audio_get_delay( libvlc_media_player_t *p_mi )
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{
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input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
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int64_t val = 0;
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if( p_input_thread != NULL )
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{
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val = var_GetTime( p_input_thread, "audio-delay" );
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vlc_object_release( p_input_thread );
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}
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return val;
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}
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/*****************************************************************************
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* libvlc_audio_set_delay : Set the current audio delay
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*****************************************************************************/
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int libvlc_audio_set_delay( libvlc_media_player_t *p_mi, int64_t i_delay )
|
|
{
|
|
input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
|
|
int ret = 0;
|
|
if( p_input_thread != NULL )
|
|
{
|
|
var_SetTime( p_input_thread, "audio-delay", i_delay );
|
|
vlc_object_release( p_input_thread );
|
|
}
|
|
else
|
|
{
|
|
ret = -1;
|
|
}
|
|
return ret;
|
|
}
|