/*****************************************************************************
* intf.c : audio output API towards the interface modules
*****************************************************************************
- * Copyright (C) 2002-2007 the VideoLAN team
+ * Copyright (C) 2002-2007 VLC authors and VideoLAN
* $Id$
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
*
- * 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
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 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.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser 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.
+ * You should have received a copy of the GNU Lesser 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.
*****************************************************************************/
/*****************************************************************************
#endif
#include <vlc_common.h>
+#include <vlc_aout_intf.h>
#include <stdio.h>
#include <stdlib.h> /* calloc(), malloc(), free() */
#include <string.h>
+#include <math.h>
#include <vlc_aout.h>
#include "aout_internal.h"
#include <vlc_playlist.h>
-static aout_instance_t *findAout (vlc_object_t *obj)
+static audio_output_t *findAout (vlc_object_t *obj)
{
- input_thread_t *p_input = playlist_CurrentInput (pl_Get (obj));
+ input_thread_t *(*pf_find_input) (vlc_object_t *);
+
+ pf_find_input = var_GetAddress (obj, "find-input-callback");
+ if (unlikely(pf_find_input == NULL))
+ return NULL;
+
+ input_thread_t *p_input = pf_find_input (obj);
if (p_input == NULL)
return NULL;
- aout_instance_t *p_aout = input_GetAout (p_input);
+ audio_output_t *p_aout = input_GetAout (p_input);
vlc_object_release (p_input);
return p_aout;
}
#define findAout(o) findAout(VLC_OBJECT(o))
-/*
- * Volume management
- *
- * The hardware volume cannot be set if the output module gets deleted, so
- * we must take the mixer lock. The software volume cannot be set while the
- * mixer is running, so we need the mixer lock (too).
- *
- * Here is a schematic of the i_volume range :
- *
- * |------------------------------+---------------------------------------|
- * 0 pi_soft 1024
- *
- * Between 0 and pi_soft, the volume is done in hardware by the output
- * module. Above, the output module will change p_aout->mixer.i_multiplier
- * (done in software). This scaling may result * in cropping errors and
- * should be avoided as much as possible.
- *
- * It is legal to have *pi_soft == 0, and do everything in software.
- * It is also legal to have *pi_soft == 1024, and completely avoid
- * software scaling. However, some streams (esp. A/52) are encoded with
- * a very low volume and users may complain.
- */
-
-enum {
- SET_MUTE=1,
- SET_VOLUME=2,
- INCREMENT_VOLUME=4,
- TOGGLE_MUTE=8
-};
-/*****************************************************************************
- * doVolumeChanges : handle all volume changes. Internal use only to ease
- * variables locking.
- *****************************************************************************/
-int doVolumeChanges( unsigned action, vlc_object_t * p_object, int i_nb_steps,
- audio_volume_t i_volume, audio_volume_t * i_return_volume,
- bool b_mute )
-{
- int i_result = VLC_SUCCESS;
- int i_volume_step = 1, i_new_volume = 0;
- bool b_var_mute = false;
- aout_instance_t *p_aout = findAout( p_object );
-
- if ( p_aout ) aout_lock_volume( p_aout );
-
- b_var_mute = (bool)var_GetBool( p_object->p_libvlc, "volume-muted");
-
- const bool b_unmute_condition = ( /* Also unmute on increments */
- ( action == INCREMENT_VOLUME )
- || /* On explicit unmute */
- ( ( action == SET_MUTE ) && ( b_var_mute && !b_mute ) )
- || /* On toggle from muted */
- ( ( action == TOGGLE_MUTE ) && b_var_mute ) );
-
- const bool b_mute_condition = ( !b_var_mute
- && ( /* explicit */
- ( ( action == SET_MUTE ) && b_mute )
- || /* or toggle */
- ( action == TOGGLE_MUTE )
- ));
-
- /* On UnMute */
- if ( b_unmute_condition )
- {
- /* Restore saved volume */
- var_Create( p_object->p_libvlc, "saved-volume", VLC_VAR_INTEGER );
- i_volume = (audio_volume_t)var_GetInteger( p_object->p_libvlc,
- "saved-volume" );
- var_SetBool( p_object->p_libvlc, "volume-muted", false );
- }
- else if ( b_mute_condition )
- {
- /* We need an initial value to backup later */
- i_volume = config_GetInt( p_object, "volume" );
- }
-
- if ( action == INCREMENT_VOLUME )
- {
- i_volume_step = config_GetInt( p_object->p_libvlc, "volume-step" );
-
- if ( !b_unmute_condition )
- i_volume = config_GetInt( p_object, "volume" );
-
- i_new_volume = (int) i_volume + i_volume_step * i_nb_steps;
-
- if ( i_new_volume > AOUT_VOLUME_MAX )
- i_volume = AOUT_VOLUME_MAX;
- else if ( i_new_volume < AOUT_VOLUME_MIN )
- i_volume = AOUT_VOLUME_MIN;
- else
- i_volume = i_new_volume;
-
- if ( i_return_volume != NULL )
- *i_return_volume = i_volume;
- }
-
- var_Create( p_object->p_libvlc, "saved-volume", VLC_VAR_INTEGER );
- var_SetInteger( p_object->p_libvlc, "saved-volume" , i_volume );
-
- /* On Mute */
- if ( b_mute_condition )
- {
- i_volume = AOUT_VOLUME_MIN;
- var_SetBool( p_object->p_libvlc, "volume-muted", true );
- }
-
- /* Commit volume changes */
- config_PutInt( p_object, "volume", i_volume );
-
- if ( p_aout )
- {
- aout_lock_mixer( p_aout );
- aout_lock_input_fifos( p_aout );
- if ( p_aout->p_mixer )
- i_result = p_aout->output.pf_volume_set( p_aout, i_volume );
- aout_unlock_input_fifos( p_aout );
- aout_unlock_mixer( p_aout );
- }
-
- /* trigger callbacks */
- var_TriggerCallback( p_object->p_libvlc, "volume-change");
- if ( p_aout )
- {
- var_SetBool( p_aout, "intf-change", true );
- aout_unlock_volume( p_aout );
- vlc_object_release( p_aout );
- }
-
- return i_result;
-}
-
#undef aout_VolumeGet
-/*****************************************************************************
- * aout_VolumeGet : get the volume of the output device
- *****************************************************************************/
-int aout_VolumeGet( vlc_object_t * p_object, audio_volume_t * pi_volume )
+/**
+ * Gets the volume of the output device (independent of mute).
+ * \return Current audio volume (0 = silent, 1 = nominal),
+ * or a strictly negative value if undefined.
+ */
+float aout_VolumeGet (vlc_object_t *obj)
{
- int i_result = 0;
- aout_instance_t * p_aout = findAout( p_object );
-
- if ( pi_volume == NULL ) return -1;
-
- if ( p_aout == NULL )
- {
- *pi_volume = (audio_volume_t)config_GetInt( p_object, "volume" );
- return 0;
- }
+ audio_output_t *aout = findAout (obj);
+ if (aout == NULL)
+ return -1.f;
- aout_lock_volume( p_aout );
- aout_lock_mixer( p_aout );
- if ( p_aout->p_mixer )
- {
- i_result = p_aout->output.pf_volume_get( p_aout, pi_volume );
- }
- else
- {
- *pi_volume = (audio_volume_t)config_GetInt( p_object, "volume" );
- }
- aout_unlock_mixer( p_aout );
- aout_unlock_volume( p_aout );
-
- vlc_object_release( p_aout );
- return i_result;
+ float volume = aout_OutputVolumeGet (aout);
+ vlc_object_release (aout);
+ return volume;
}
#undef aout_VolumeSet
-/*****************************************************************************
- * aout_VolumeSet : set the volume of the output device
- *****************************************************************************/
-int aout_VolumeSet( vlc_object_t * p_object, audio_volume_t i_volume )
-{
- return doVolumeChanges( SET_VOLUME, p_object, 1, i_volume, NULL, true );
-}
-
-#undef aout_VolumeUp
-/*****************************************************************************
- * aout_VolumeUp : raise the output volume
- *****************************************************************************
- * If pi_volume != NULL, *pi_volume will contain the volume at the end of the
- * function.
- *****************************************************************************/
-int aout_VolumeUp( vlc_object_t * p_object, int i_nb_steps,
- audio_volume_t * pi_volume )
-{
- return doVolumeChanges( INCREMENT_VOLUME, p_object, i_nb_steps, 0, pi_volume, true );
-}
-
-#undef aout_VolumeDown
-/*****************************************************************************
- * aout_VolumeDown : lower the output volume
- *****************************************************************************
- * If pi_volume != NULL, *pi_volume will contain the volume at the end of the
- * function.
- *****************************************************************************/
-int aout_VolumeDown( vlc_object_t * p_object, int i_nb_steps,
- audio_volume_t * pi_volume )
-{
- return aout_VolumeUp( p_object, -i_nb_steps, pi_volume );
-}
-
-#undef aout_ToggleMute
-/*****************************************************************************
- * aout_ToggleMute : Mute/un-mute the output volume
- *****************************************************************************
- * If pi_volume != NULL, *pi_volume will contain the volume at the end of the
- * function (muted => 0).
- *****************************************************************************/
-int aout_ToggleMute( vlc_object_t * p_object, audio_volume_t * pi_volume )
-{
- return doVolumeChanges( TOGGLE_MUTE, p_object, 1, 0, pi_volume, true );
-}
-
-/*****************************************************************************
- * aout_IsMuted : Get the output volume mute status
- *****************************************************************************/
-bool aout_IsMuted( vlc_object_t * p_object )
-{
- bool b_return_val;
- aout_instance_t * p_aout = findAout( p_object );
- if ( p_aout ) aout_lock_volume( p_aout );
- b_return_val = var_GetBool( p_object->p_libvlc, "volume-muted");
- if ( p_aout )
- {
- aout_unlock_volume( p_aout );
- vlc_object_release( p_aout );
- }
- return b_return_val;
-}
-
-/*****************************************************************************
- * aout_SetMute : Sets mute status
- *****************************************************************************
- * If pi_volume != NULL, *pi_volume will contain the volume at the end of the
- * function (muted => 0).
- *****************************************************************************/
-int aout_SetMute( vlc_object_t * p_object, audio_volume_t * pi_volume,
- bool b_mute )
-{
- return doVolumeChanges( SET_MUTE, p_object, 1, 0, pi_volume, b_mute );
-}
-
-/*
- * The next functions are not supposed to be called by the interface, but
- * are placeholders for software-only scaling.
+/**
+ * Sets the volume of the output device.
+ * \note The mute status is not changed.
*/
-
-/* Meant to be called by the output plug-in's Open(). */
-void aout_VolumeSoftInit( aout_instance_t * p_aout )
+int aout_VolumeSet (vlc_object_t *obj, float vol)
{
- int i_volume;
-
- p_aout->output.pf_volume_get = aout_VolumeSoftGet;
- p_aout->output.pf_volume_set = aout_VolumeSoftSet;
+ int ret = -1;
- i_volume = config_GetInt( p_aout, "volume" );
- if ( i_volume < AOUT_VOLUME_MIN )
+ audio_output_t *aout = findAout (obj);
+ if (aout != NULL)
{
- i_volume = AOUT_VOLUME_DEFAULT;
+ ret = aout_OutputVolumeSet (aout, vol);
+ vlc_object_release (aout);
}
- else if ( i_volume > AOUT_VOLUME_MAX )
- {
- i_volume = AOUT_VOLUME_MAX;
- }
-
- aout_VolumeSoftSet( p_aout, (audio_volume_t)i_volume );
-}
-
-/* Placeholder for pf_volume_get(). */
-int aout_VolumeSoftGet( aout_instance_t * p_aout, audio_volume_t * pi_volume )
-{
- *pi_volume = p_aout->output.i_volume;
- return 0;
-}
-
-
-/* Placeholder for pf_volume_set(). */
-int aout_VolumeSoftSet( aout_instance_t * p_aout, audio_volume_t i_volume )
-{
- aout_MixerMultiplierSet( p_aout, (float)i_volume / AOUT_VOLUME_DEFAULT );
- p_aout->output.i_volume = i_volume;
- return 0;
+ return ret;
}
-/*
- * The next functions are not supposed to be called by the interface, but
- * are placeholders for unsupported scaling.
+#undef aout_MuteGet
+/**
+ * Gets the output mute status.
+ * \return 0 if not muted, 1 if muted, -1 if undefined.
*/
-
-/* Meant to be called by the output plug-in's Open(). */
-void aout_VolumeNoneInit( aout_instance_t * p_aout )
+int aout_MuteGet (vlc_object_t *obj)
{
- p_aout->output.pf_volume_get = aout_VolumeNoneGet;
- p_aout->output.pf_volume_set = aout_VolumeNoneSet;
-}
+ audio_output_t *aout = findAout (obj);
+ if (aout == NULL)
+ return -1.f;
-/* Placeholder for pf_volume_get(). */
-int aout_VolumeNoneGet( aout_instance_t * p_aout, audio_volume_t * pi_volume )
-{
- (void)p_aout; (void)pi_volume;
- return -1;
+ bool mute = aout_OutputMuteGet (aout);
+ vlc_object_release (aout);
+ return mute;
}
-/* Placeholder for pf_volume_set(). */
-int aout_VolumeNoneSet( aout_instance_t * p_aout, audio_volume_t i_volume )
-{
- (void)p_aout; (void)i_volume;
- return -1;
-}
-
-
-/*
- * Pipelines management
+#undef aout_MuteSet
+/**
+ * Sets mute status.
*/
-
-/*****************************************************************************
- * aout_Restart : re-open the output device and rebuild the input and output
- * pipelines
- *****************************************************************************
- * This function is used whenever the parameters of the output plug-in are
- * changed (eg. selecting S/PDIF or PCM).
- *****************************************************************************/
-static int aout_Restart( aout_instance_t * p_aout )
-{
- int i;
- bool b_error = 0;
-
- aout_lock_mixer( p_aout );
-
- if ( p_aout->i_nb_inputs == 0 )
- {
- aout_unlock_mixer( p_aout );
- msg_Err( p_aout, "no decoder thread" );
- return -1;
- }
-
- for ( i = 0; i < p_aout->i_nb_inputs; i++ )
- {
- aout_lock_input( p_aout, p_aout->pp_inputs[i] );
- aout_lock_input_fifos( p_aout );
- aout_InputDelete( p_aout, p_aout->pp_inputs[i] );
- aout_unlock_input_fifos( p_aout );
- }
-
- /* Lock all inputs. */
- aout_lock_input_fifos( p_aout );
- aout_MixerDelete( p_aout );
-
- /* Re-open the output plug-in. */
- aout_OutputDelete( p_aout );
-
- if ( aout_OutputNew( p_aout, &p_aout->pp_inputs[0]->input ) == -1 )
- {
- /* Release all locks and report the error. */
- for ( i = 0; i < p_aout->i_nb_inputs; i++ )
- {
- vlc_mutex_unlock( &p_aout->pp_inputs[i]->lock );
- }
- aout_unlock_input_fifos( p_aout );
- aout_unlock_mixer( p_aout );
- return -1;
- }
-
- if ( aout_MixerNew( p_aout ) == -1 )
- {
- aout_OutputDelete( p_aout );
- for ( i = 0; i < p_aout->i_nb_inputs; i++ )
- {
- vlc_mutex_unlock( &p_aout->pp_inputs[i]->lock );
- }
- aout_unlock_input_fifos( p_aout );
- aout_unlock_mixer( p_aout );
- return -1;
- }
-
- /* Re-open all inputs. */
- for ( i = 0; i < p_aout->i_nb_inputs; i++ )
- {
- aout_input_t * p_input = p_aout->pp_inputs[i];
- b_error |= aout_InputNew( p_aout, p_input, &p_input->request_vout );
- p_input->b_changed = 1;
- aout_unlock_input( p_aout, p_input );
- }
-
- aout_unlock_input_fifos( p_aout );
- aout_unlock_mixer( p_aout );
-
- return b_error;
-}
-
-/*****************************************************************************
- * aout_FindAndRestart : find the audio output instance and restart
- *****************************************************************************
- * This is used for callbacks of the configuration variables, and we believe
- * that when those are changed, it is a significant change which implies
- * rebuilding the audio-device and audio-channels variables.
- *****************************************************************************/
-int aout_FindAndRestart( vlc_object_t * p_this, const char *psz_name,
- vlc_value_t oldval, vlc_value_t newval, void *p_data )
+int aout_MuteSet (vlc_object_t *obj, bool mute)
{
- aout_instance_t * p_aout = findAout( pl_Get(p_this) );
-
- (void)psz_name; (void)oldval; (void)newval; (void)p_data;
- if ( p_aout == NULL ) return VLC_SUCCESS;
-
- var_Destroy( p_aout, "audio-device" );
- var_Destroy( p_aout, "audio-channels" );
-
- aout_Restart( p_aout );
- vlc_object_release( p_aout );
-
- return VLC_SUCCESS;
-}
+ int ret = -1;
-/*****************************************************************************
- * aout_ChannelsRestart : change the audio device or channels and restart
- *****************************************************************************/
-int aout_ChannelsRestart( vlc_object_t * p_this, const char * psz_variable,
- vlc_value_t oldval, vlc_value_t newval,
- void *p_data )
-{
- aout_instance_t * p_aout = (aout_instance_t *)p_this;
- (void)oldval; (void)newval; (void)p_data;
-
- if ( !strcmp( psz_variable, "audio-device" ) )
+ audio_output_t *aout = findAout (obj);
+ if (aout != NULL)
{
- /* This is supposed to be a significant change and supposes
- * rebuilding the channel choices. */
- var_Destroy( p_aout, "audio-channels" );
+ ret = aout_OutputMuteSet (aout, mute);
+ vlc_object_release (aout);
+ if (ret == 0)
+ var_SetBool (obj, "mute", mute);
}
- aout_Restart( p_aout );
- return 0;
+ return ret;
}
-#undef aout_EnableFilter
-/** Enable or disable an audio filter
- * \param p_this a vlc object
- * \param psz_name name of the filter
- * \param b_add are we adding or removing the filter ?
- */
-void aout_EnableFilter( vlc_object_t *p_this, const char *psz_name,
- bool b_add )
-{
- aout_instance_t *p_aout = findAout( p_this );
- if( AoutChangeFilterString( p_this, p_aout, "audio-filter", psz_name, b_add ) )
- {
- if( p_aout )
- AoutInputsMarkToRestart( p_aout );
- }
- if( p_aout )
- vlc_object_release( p_aout );
-}
projects / vlc / blobdiff