/*****************************************************************************
* output.c : internal management of output streams for the audio output
*****************************************************************************
- * Copyright (C) 2002-2004 the VideoLAN team
+ * Copyright (C) 2002-2004 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.
*****************************************************************************/
-/*****************************************************************************
- * Preamble
- *****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
+#include <stdlib.h>
+#include <assert.h>
+
#include <vlc_common.h>
#include <vlc_aout.h>
-#include <vlc_aout_intf.h>
-#include <vlc_cpu.h>
#include <vlc_modules.h>
#include "libvlc.h"
#include "aout_internal.h"
-/*****************************************************************************
- * aout_OutputNew : allocate a new output and rework the filter pipeline
- *****************************************************************************
- * This function is entered with the mixer lock.
- *****************************************************************************/
-int aout_OutputNew( audio_output_t * p_aout,
- const audio_sample_format_t * p_format )
+static const char unset_str[1] = ""; /* Non-NULL constant string pointer */
+
+struct aout_dev
+{
+ aout_dev_t *next;
+ char *name;
+ char id[1];
+};
+
+
+/* Local functions */
+static void aout_OutputAssertLocked (audio_output_t *aout)
+{
+ aout_owner_t *owner = aout_owner (aout);
+
+ vlc_assert_locked (&owner->lock);
+}
+
+static void aout_Destructor( vlc_object_t * p_this );
+
+static int var_Copy (vlc_object_t *src, const char *name, vlc_value_t prev,
+ vlc_value_t value, void *data)
{
- vlc_assert_locked( &p_aout->lock );
- p_aout->format = *p_format;
+ vlc_object_t *dst = data;
- /* Retrieve user defaults. */
- int i_rate = var_InheritInteger( p_aout, "aout-rate" );
- if ( i_rate != 0 )
- p_aout->format.i_rate = i_rate;
- aout_FormatPrepare( &p_aout->format );
+ (void) src; (void) prev;
+ return var_Set (dst, name, value);
+}
- /* Find the best output plug-in. */
- p_aout->module = module_need( p_aout, "audio output", "$aout", false );
- if ( p_aout->module == NULL )
+/**
+ * Supply or update the current custom ("hardware") volume.
+ * @note This only makes sense after calling aout_VolumeHardInit().
+ * @param volume current custom volume
+ *
+ * @warning The caller (i.e. the audio output plug-in) is responsible for
+ * interlocking and synchronizing call to this function and to the
+ * audio_output_t.volume_set callback. This ensures that VLC gets correct
+ * volume information (possibly with a latency).
+ */
+static void aout_VolumeNotify (audio_output_t *aout, float volume)
+{
+ var_SetFloat (aout, "volume", volume);
+}
+
+static void aout_MuteNotify (audio_output_t *aout, bool mute)
+{
+ var_SetBool (aout, "mute", mute);
+}
+
+static void aout_PolicyNotify (audio_output_t *aout, bool cork)
+{
+ (cork ? var_IncInteger : var_DecInteger) (aout->p_parent, "corks");
+}
+
+static void aout_DeviceNotify (audio_output_t *aout, const char *id)
+{
+ var_SetString (aout, "device", (id != NULL) ? id : "");
+}
+
+static void aout_HotplugNotify (audio_output_t *aout,
+ const char *id, const char *name)
+{
+ aout_owner_t *owner = aout_owner (aout);
+ aout_dev_t *dev, **pp = &owner->dev.list;
+
+ vlc_mutex_lock (&owner->dev.lock);
+ while ((dev = *pp) != NULL)
{
- msg_Err( p_aout, "no suitable audio output module" );
- return -1;
+ if (!strcmp (id, dev->id))
+ break;
+ pp = &dev->next;
}
- if ( var_Type( p_aout, "audio-channels" ) ==
- (VLC_VAR_INTEGER | VLC_VAR_HASCHOICE) )
+ if (name != NULL)
{
- /* The user may have selected a different channels configuration. */
- switch( var_InheritInteger( p_aout, "audio-channels" ) )
+ if (dev == NULL) /* Added device */
{
- case AOUT_VAR_CHAN_RSTEREO:
- p_aout->format.i_original_channels |= AOUT_CHAN_REVERSESTEREO;
- break;
- case AOUT_VAR_CHAN_STEREO:
- p_aout->format.i_original_channels =
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
- break;
- case AOUT_VAR_CHAN_LEFT:
- p_aout->format.i_original_channels = AOUT_CHAN_LEFT;
- break;
- case AOUT_VAR_CHAN_RIGHT:
- p_aout->format.i_original_channels = AOUT_CHAN_RIGHT;
- break;
- case AOUT_VAR_CHAN_DOLBYS:
- p_aout->format.i_original_channels =
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_DOLBYSTEREO;
- break;
+ dev = malloc (sizeof (*dev) + strlen (id));
+ if (unlikely(dev == NULL))
+ goto out;
+ dev->next = NULL;
+ strcpy (dev->id, id);
+ *pp = dev;
+ owner->dev.count++;
}
+ else /* Modified device */
+ free (dev->name);
+ dev->name = strdup (name);
}
- else if ( p_aout->format.i_physical_channels == AOUT_CHAN_CENTER
- && (p_aout->format.i_original_channels
- & AOUT_CHAN_PHYSMASK) == (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT) )
+ else
{
- vlc_value_t val, text;
-
- /* Mono - create the audio-channels variable. */
- var_Create( p_aout, "audio-channels",
- VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
- text.psz_string = _("Audio Channels");
- var_Change( p_aout, "audio-channels", VLC_VAR_SETTEXT, &text, NULL );
-
- val.i_int = AOUT_VAR_CHAN_STEREO; text.psz_string = _("Stereo");
- var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val, &text );
- val.i_int = AOUT_VAR_CHAN_LEFT; text.psz_string = _("Left");
- var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val, &text );
- val.i_int = AOUT_VAR_CHAN_RIGHT; text.psz_string = _("Right");
- var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val, &text );
- if ( p_aout->format.i_original_channels & AOUT_CHAN_DUALMONO )
+ if (dev != NULL) /* Removed device */
{
- /* Go directly to the left channel. */
- p_aout->format.i_original_channels = AOUT_CHAN_LEFT;
- var_SetInteger( p_aout, "audio-channels", AOUT_VAR_CHAN_LEFT );
+ owner->dev.count--;
+ *pp = dev->next;
+ free (dev->name);
+ free (dev);
}
- var_AddCallback( p_aout, "audio-channels", aout_ChannelsRestart,
- NULL );
}
- else if ( p_aout->format.i_physical_channels ==
- (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT)
- && (p_aout->format.i_original_channels &
- (AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT)) )
+out:
+ vlc_mutex_unlock (&owner->dev.lock);
+}
+
+static void aout_RestartNotify (audio_output_t *aout, unsigned mode)
+{
+ aout_RequestRestart (aout, mode);
+}
+
+static int aout_GainNotify (audio_output_t *aout, float gain)
+{
+ aout_owner_t *owner = aout_owner (aout);
+
+ aout_OutputAssertLocked (aout);
+ aout_volume_SetVolume (owner->volume, gain);
+ /* XXX: ideally, return -1 if format cannot be amplified */
+ return 0;
+}
+
+#undef aout_New
+/**
+ * Creates an audio output object and initializes an output module.
+ */
+audio_output_t *aout_New (vlc_object_t *parent)
+{
+ vlc_value_t val, text;
+
+ audio_output_t *aout = vlc_custom_create (parent, sizeof (aout_instance_t),
+ "audio output");
+ if (unlikely(aout == NULL))
+ return NULL;
+
+ aout_owner_t *owner = aout_owner (aout);
+
+ vlc_mutex_init (&owner->lock);
+ vlc_mutex_init (&owner->req.lock);
+ vlc_mutex_init (&owner->dev.lock);
+ owner->req.device = (char *)unset_str;
+ owner->req.volume = -1.f;
+ owner->req.mute = -1;
+
+ vlc_object_set_destructor (aout, aout_Destructor);
+
+ /* Audio output module callbacks */
+ var_Create (aout, "volume", VLC_VAR_FLOAT);
+ var_AddCallback (aout, "volume", var_Copy, parent);
+ var_Create (aout, "mute", VLC_VAR_BOOL | VLC_VAR_DOINHERIT);
+ var_AddCallback (aout, "mute", var_Copy, parent);
+ var_Create (aout, "device", VLC_VAR_STRING);
+
+ aout->event.volume_report = aout_VolumeNotify;
+ aout->event.mute_report = aout_MuteNotify;
+ aout->event.policy_report = aout_PolicyNotify;
+ aout->event.device_report = aout_DeviceNotify;
+ aout->event.hotplug_report = aout_HotplugNotify;
+ aout->event.gain_request = aout_GainNotify;
+ aout->event.restart_request = aout_RestartNotify;
+
+ /* Audio output module initialization */
+ aout->start = NULL;
+ aout->stop = NULL;
+ aout->volume_set = NULL;
+ aout->mute_set = NULL;
+ aout->device_select = NULL;
+ owner->module = module_need (aout, "audio output", "$aout", false);
+ if (owner->module == NULL)
{
- vlc_value_t val, text;
+ msg_Err (aout, "no suitable audio output module");
+ vlc_object_release (aout);
+ return NULL;
+ }
- /* Stereo - create the audio-channels variable. */
- var_Create( p_aout, "audio-channels",
- VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
- text.psz_string = _("Audio Channels");
- var_Change( p_aout, "audio-channels", VLC_VAR_SETTEXT, &text, NULL );
+ /*
+ * Persistent audio output variables
+ */
+ module_config_t *cfg;
+ char *str;
+
+ /* Visualizations */
+ var_Create (aout, "visual", VLC_VAR_STRING | VLC_VAR_HASCHOICE);
+ text.psz_string = _("Visualizations");
+ var_Change (aout, "visual", VLC_VAR_SETTEXT, &text, NULL);
+ val.psz_string = (char *)"";
+ text.psz_string = _("Disable");
+ var_Change (aout, "visual", VLC_VAR_ADDCHOICE, &val, &text);
+ val.psz_string = (char *)"spectrometer";
+ text.psz_string = _("Spectrometer");
+ var_Change (aout, "visual", VLC_VAR_ADDCHOICE, &val, &text);
+ val.psz_string = (char *)"scope";
+ text.psz_string = _("Scope");
+ var_Change (aout, "visual", VLC_VAR_ADDCHOICE, &val, &text);
+ val.psz_string = (char *)"spectrum";
+ text.psz_string = _("Spectrum");
+ var_Change (aout, "visual", VLC_VAR_ADDCHOICE, &val, &text);
+ val.psz_string = (char *)"vuMeter";
+ text.psz_string = _("Vu meter");
+ var_Change (aout, "visual", VLC_VAR_ADDCHOICE, &val, &text);
+ /* Look for goom plugin */
+ if (module_exists ("goom"))
+ {
+ val.psz_string = (char *)"goom";
+ text.psz_string = (char *)"Goom";
+ var_Change (aout, "visual", VLC_VAR_ADDCHOICE, &val, &text);
+ }
+ /* Look for libprojectM plugin */
+ if (module_exists ("projectm"))
+ {
+ val.psz_string = (char *)"projectm";
+ text.psz_string = (char*)"projectM";
+ var_Change (aout, "visual", VLC_VAR_ADDCHOICE, &val, &text);
+ }
+ /* Look for VSXu plugin */
+ if (module_exists ("vsxu"))
+ {
+ val.psz_string = (char *)"vsxu";
+ text.psz_string = (char*)"Vovoid VSXu";
+ var_Change (aout, "visual", VLC_VAR_ADDCHOICE, &val, &text);
+ }
+ /* Look for glspectrum plugin */
+ if (module_exists ("glspectrum"))
+ {
+ val.psz_string = (char *)"glspectrum";
+ text.psz_string = (char*)"3D spectrum";
+ var_Change (aout, "visual", VLC_VAR_ADDCHOICE, &val, &text);
+ }
+ str = var_GetNonEmptyString (aout, "effect-list");
+ if (str != NULL)
+ {
+ var_SetString (aout, "visual", str);
+ free (str);
+ }
- if ( p_aout->format.i_original_channels & AOUT_CHAN_DOLBYSTEREO )
- {
- val.i_int = AOUT_VAR_CHAN_DOLBYS;
- text.psz_string = _("Dolby Surround");
- }
- else
+ /* Equalizer */
+ var_Create (aout, "equalizer", VLC_VAR_STRING | VLC_VAR_HASCHOICE);
+ text.psz_string = _("Equalizer");
+ var_Change (aout, "equalizer", VLC_VAR_SETTEXT, &text, NULL);
+ val.psz_string = (char*)"";
+ text.psz_string = _("Disable");
+ var_Change (aout, "equalizer", VLC_VAR_ADDCHOICE, &val, &text);
+ cfg = config_FindConfig (VLC_OBJECT(aout), "equalizer-preset");
+ if (likely(cfg != NULL))
+ for (unsigned i = 0; i < cfg->list_count; i++)
{
- val.i_int = AOUT_VAR_CHAN_STEREO;
- text.psz_string = _("Stereo");
+ val.psz_string = cfg->list.psz[i];
+ text.psz_string = vlc_gettext(cfg->list_text[i]);
+ var_Change (aout, "equalizer", VLC_VAR_ADDCHOICE, &val, &text);
}
- var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val, &text );
- val.i_int = AOUT_VAR_CHAN_LEFT; text.psz_string = _("Left");
- var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val, &text );
- val.i_int = AOUT_VAR_CHAN_RIGHT; text.psz_string = _("Right");
- var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val, &text );
- val.i_int = AOUT_VAR_CHAN_RSTEREO; text.psz_string=_("Reverse stereo");
- var_Change( p_aout, "audio-channels", VLC_VAR_ADDCHOICE, &val, &text );
- if ( p_aout->format.i_original_channels & AOUT_CHAN_DUALMONO )
+
+ var_Create (aout, "audio-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
+ text.psz_string = _("Audio filters");
+ var_Change (aout, "audio-filter", VLC_VAR_SETTEXT, &text, NULL);
+
+
+ var_Create (aout, "audio-visual", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
+ text.psz_string = _("Audio visualizations");
+ var_Change (aout, "audio-visual", VLC_VAR_SETTEXT, &text, NULL);
+
+ /* Replay gain */
+ var_Create (aout, "audio-replay-gain-mode",
+ VLC_VAR_STRING | VLC_VAR_DOINHERIT );
+ text.psz_string = _("Replay gain");
+ var_Change (aout, "audio-replay-gain-mode", VLC_VAR_SETTEXT, &text, NULL);
+ cfg = config_FindConfig (VLC_OBJECT(aout), "audio-replay-gain-mode");
+ if (likely(cfg != NULL))
+ for (unsigned i = 0; i < cfg->list_count; i++)
{
- /* Go directly to the left channel. */
- p_aout->format.i_original_channels = AOUT_CHAN_LEFT;
- var_SetInteger( p_aout, "audio-channels", AOUT_VAR_CHAN_LEFT );
+ val.psz_string = cfg->list.psz[i];
+ text.psz_string = vlc_gettext(cfg->list_text[i]);
+ var_Change (aout, "audio-replay-gain-mode", VLC_VAR_ADDCHOICE,
+ &val, &text);
}
- var_AddCallback( p_aout, "audio-channels", aout_ChannelsRestart,
- NULL );
+
+ var_Create (aout, "equalizer-preamp", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
+ var_Create (aout, "equalizer-bands", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
+
+ return aout;
+}
+
+/**
+ * Deinitializes an audio output module and destroys an audio output object.
+ */
+void aout_Destroy (audio_output_t *aout)
+{
+ aout_owner_t *owner = aout_owner (aout);
+
+ aout_OutputLock (aout);
+ module_unneed (aout, owner->module);
+ /* Protect against late call from intf.c */
+ aout->volume_set = NULL;
+ aout->mute_set = NULL;
+ aout_OutputUnlock (aout);
+
+ var_DelCallback (aout, "mute", var_Copy, aout->p_parent);
+ var_SetFloat (aout, "volume", -1.f);
+ var_DelCallback (aout, "volume", var_Copy, aout->p_parent);
+ vlc_object_release (aout);
+}
+
+/**
+ * Destroys the audio output lock used (asynchronously) by interface functions.
+ */
+static void aout_Destructor (vlc_object_t *obj)
+{
+ audio_output_t *aout = (audio_output_t *)obj;
+ aout_owner_t *owner = aout_owner (aout);
+
+ vlc_mutex_destroy (&owner->dev.lock);
+ for (aout_dev_t *dev = owner->dev.list, *next; dev != NULL; dev = next)
+ {
+ next = dev->next;
+ free (dev->name);
+ free (dev);
}
- var_TriggerCallback( p_aout, "intf-change" );
- aout_FormatPrepare( &p_aout->format );
+ assert (owner->req.device == unset_str);
+ vlc_mutex_destroy (&owner->req.lock);
+ vlc_mutex_destroy (&owner->lock);
+}
- /* Prepare FIFO. */
- aout_FifoInit( p_aout, &p_aout->fifo, p_aout->format.i_rate );
- aout_FormatPrint( p_aout, "output", &p_aout->format );
+/**
+ * Starts an audio output stream.
+ * \param fmt audio output stream format [IN/OUT]
+ * \warning The caller must hold the audio output lock.
+ */
+int aout_OutputNew (audio_output_t *aout, audio_sample_format_t *restrict fmt)
+{
+ aout_OutputAssertLocked (aout);
+
+ /* Ideally, the audio filters would be created before the audio output,
+ * and the ideal audio format would be the output of the filters chain.
+ * But that scheme would not really play well with digital pass-through. */
+ if (AOUT_FMT_LINEAR(fmt))
+ { /* Try to stay in integer domain if possible for no/slow FPU. */
+ fmt->i_format = (fmt->i_bitspersample > 16) ? VLC_CODEC_FL32
+ : VLC_CODEC_S16N;
+ aout_FormatPrepare (fmt);
+ }
- /* Choose the mixer format. */
- p_aout->mixer_format = p_aout->format;
- if ( AOUT_FMT_NON_LINEAR(&p_aout->format) )
- p_aout->mixer_format.i_format = p_format->i_format;
- else
- /* Most audio filters can only deal with single-precision,
- * so lets always use that when hardware supports floating point. */
- if( HAVE_FPU )
- p_aout->mixer_format.i_format = VLC_CODEC_FL32;
- else
- /* Otherwise, audio filters will not work. Use fixed-point if the input has
- * more than 16-bits depth. */
- if( p_format->i_bitspersample > 16 )
- p_aout->mixer_format.i_format = VLC_CODEC_FI32;
- else
- /* Fallback to 16-bits. This avoids pointless conversion to and from
- * 32-bits samples for the sole purpose of software mixing. */
- p_aout->mixer_format.i_format = VLC_CODEC_S16N;
-
- aout_FormatPrepare( &p_aout->mixer_format );
- aout_FormatPrint( p_aout, "mixer", &p_aout->mixer_format );
-
- /* Create filters. */
- p_aout->i_nb_filters = 0;
- if ( aout_FiltersCreatePipeline( p_aout, p_aout->pp_filters,
- &p_aout->i_nb_filters,
- &p_aout->mixer_format,
- &p_aout->format ) < 0 )
+ if (aout->start (aout, fmt))
{
- msg_Err( p_aout, "couldn't create audio output pipeline" );
- module_unneed( p_aout, p_aout->module );
- p_aout->module = NULL;
+ msg_Err (aout, "module not functional");
return -1;
}
+
+ if (!var_Type (aout, "stereo-mode"))
+ {
+ var_Create (aout, "stereo-mode",
+ VLC_VAR_INTEGER | VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT);
+
+ vlc_value_t txt;
+ txt.psz_string = _("Stereo audio mode");
+ var_Change (aout, "stereo-mode", VLC_VAR_SETTEXT, &txt, NULL);
+ }
+
+ /* The user may have selected a different channels configuration. */
+ var_AddCallback (aout, "stereo-mode", aout_ChannelsRestart, NULL);
+ switch (var_GetInteger (aout, "stereo-mode"))
+ {
+ case AOUT_VAR_CHAN_RSTEREO:
+ fmt->i_original_channels |= AOUT_CHAN_REVERSESTEREO;
+ break;
+ case AOUT_VAR_CHAN_STEREO:
+ fmt->i_original_channels = AOUT_CHANS_STEREO;
+ break;
+ case AOUT_VAR_CHAN_LEFT:
+ fmt->i_original_channels = AOUT_CHAN_LEFT;
+ break;
+ case AOUT_VAR_CHAN_RIGHT:
+ fmt->i_original_channels = AOUT_CHAN_RIGHT;
+ break;
+ case AOUT_VAR_CHAN_DOLBYS:
+ fmt->i_original_channels = AOUT_CHANS_STEREO|AOUT_CHAN_DOLBYSTEREO;
+ break;
+ default:
+ {
+ if ((fmt->i_original_channels & AOUT_CHAN_PHYSMASK)
+ != AOUT_CHANS_STEREO)
+ break;
+
+ vlc_value_t val, txt;
+ val.i_int = 0;
+ var_Change (aout, "stereo-mode", VLC_VAR_DELCHOICE, &val, NULL);
+ if (fmt->i_original_channels & AOUT_CHAN_DOLBYSTEREO)
+ {
+ val.i_int = AOUT_VAR_CHAN_DOLBYS;
+ txt.psz_string = _("Dolby Surround");
+ }
+ else
+ {
+ val.i_int = AOUT_VAR_CHAN_STEREO;
+ txt.psz_string = _("Stereo");
+ }
+ var_Change (aout, "stereo-mode", VLC_VAR_ADDCHOICE, &val, &txt);
+ var_Change (aout, "stereo-mode", VLC_VAR_SETVALUE, &val, NULL);
+ val.i_int = AOUT_VAR_CHAN_LEFT;
+ txt.psz_string = _("Left");
+ var_Change (aout, "stereo-mode", VLC_VAR_ADDCHOICE, &val, &txt);
+ if (fmt->i_original_channels & AOUT_CHAN_DUALMONO)
+ { /* Go directly to the left channel. */
+ fmt->i_original_channels = AOUT_CHAN_LEFT;
+ var_Change (aout, "stereo-mode", VLC_VAR_SETVALUE, &val, NULL);
+ }
+ val.i_int = AOUT_VAR_CHAN_RIGHT;
+ txt.psz_string = _("Right");
+ var_Change (aout, "stereo-mode", VLC_VAR_ADDCHOICE, &val, &txt);
+ val.i_int = AOUT_VAR_CHAN_RSTEREO;
+ txt.psz_string = _("Reverse stereo");
+ var_Change (aout, "stereo-mode", VLC_VAR_ADDCHOICE, &val, &txt);
+ }
+ }
+
+ aout_FormatPrepare (fmt);
+ aout_FormatPrint (aout, "output", fmt);
return 0;
}
-/*****************************************************************************
- * aout_OutputDelete : delete the output
- *****************************************************************************
- * This function is entered with the mixer lock.
- *****************************************************************************/
-void aout_OutputDelete( audio_output_t * p_aout )
+/**
+ * Stops the audio output stream (undoes aout_OutputNew()).
+ * \note This can only be called after a succesful aout_OutputNew().
+ * \warning The caller must hold the audio output lock.
+ */
+void aout_OutputDelete (audio_output_t *aout)
{
- vlc_assert_locked( &p_aout->lock );
-
- if( p_aout->module == NULL )
- return;
+ aout_OutputAssertLocked (aout);
- module_unneed( p_aout, p_aout->module );
- aout_VolumeNoneInit( p_aout ); /* clear volume callback */
- p_aout->module = NULL;
- aout_FiltersDestroyPipeline( p_aout->pp_filters, p_aout->i_nb_filters );
- aout_FifoDestroy( &p_aout->fifo );
+ var_DelCallback (aout, "stereo-mode", aout_ChannelsRestart, NULL);
+ if (aout->stop != NULL)
+ aout->stop (aout);
}
-/*****************************************************************************
- * aout_OutputPlay : play a buffer
- *****************************************************************************
- * This function is entered with the mixer lock.
- *****************************************************************************/
-void aout_OutputPlay( audio_output_t * p_aout, aout_buffer_t * p_buffer )
+int aout_OutputTimeGet (audio_output_t *aout, mtime_t *delay)
{
- vlc_assert_locked( &p_aout->lock );
+ aout_OutputAssertLocked (aout);
- aout_FiltersPlay( p_aout->pp_filters, p_aout->i_nb_filters, &p_buffer );
- if( !p_buffer )
- return;
- if( p_buffer->i_buffer == 0 )
- {
- block_Release( p_buffer );
- return;
- }
+ if (aout->time_get == NULL)
+ return -1;
+ return aout->time_get (aout, delay);
+}
- aout_FifoPush( &p_aout->fifo, p_buffer );
- p_aout->pf_play( p_aout );
+/**
+ * Plays a decoded audio buffer.
+ * \note This can only be called after a succesful aout_OutputNew().
+ * \warning The caller must hold the audio output lock.
+ */
+void aout_OutputPlay (audio_output_t *aout, block_t *block)
+{
+ aout_OutputAssertLocked (aout);
+ aout->play (aout, block);
+}
+
+static void PauseDefault (audio_output_t *aout, bool pause, mtime_t date)
+{
+ if (pause)
+ aout_OutputFlush (aout, false);
+ (void) date;
}
/**
* Notifies the audio output (if any) of pause/resume events.
* This enables the output to expedite pause, instead of waiting for its
* buffers to drain.
+ * \note This can only be called after a succesful aout_OutputNew().
+ * \warning The caller must hold the audio output lock.
*/
void aout_OutputPause( audio_output_t *aout, bool pause, mtime_t date )
{
- vlc_assert_locked( &aout->lock );
+ aout_OutputAssertLocked (aout);
+ ((aout->pause != NULL) ? aout->pause : PauseDefault) (aout, pause, date);
+}
- if( aout->pf_pause != NULL )
- aout->pf_pause( aout, pause, date );
+/**
+ * Flushes or drains the audio output buffers.
+ * This enables the output to expedite seek and stop.
+ * \param wait if true, wait for buffer playback (i.e. drain),
+ * if false, discard the buffers immediately (i.e. flush)
+ * \note This can only be called after a succesful aout_OutputNew().
+ * \warning The caller must hold the audio output lock.
+ */
+void aout_OutputFlush( audio_output_t *aout, bool wait )
+{
+ aout_OutputAssertLocked( aout );
+ aout->flush (aout, wait);
}
+static int aout_OutputVolumeSet (audio_output_t *aout, float vol)
+{
+ aout_OutputAssertLocked (aout);
+ return (aout->volume_set != NULL) ? aout->volume_set (aout, vol) : -1;
+}
-/*** Volume handling ***/
+static int aout_OutputMuteSet (audio_output_t *aout, bool mute)
+{
+ aout_OutputAssertLocked (aout);
+ return (aout->mute_set != NULL) ? aout->mute_set (aout, mute) : -1;
+}
-/**
- * Dummy volume setter. This is the default volume setter.
- */
-static int aout_VolumeNoneSet (audio_output_t *aout, float volume, bool mute)
+static int aout_OutputDeviceSet (audio_output_t *aout, const char *id)
+{
+ aout_OutputAssertLocked (aout);
+ return (aout->device_select != NULL) ? aout->device_select (aout, id) : -1;
+}
+
+void aout_OutputLock (audio_output_t *aout)
{
- (void)aout; (void)volume; (void)mute;
- return -1;
+ aout_owner_t *owner = aout_owner (aout);
+
+ vlc_mutex_lock (&owner->lock);
+}
+
+static int aout_OutputTryLock (audio_output_t *aout)
+{
+ aout_owner_t *owner = aout_owner (aout);
+
+ return vlc_mutex_trylock (&owner->lock);
+}
+
+void aout_OutputUnlock (audio_output_t *aout)
+{
+ aout_owner_t *owner = aout_owner (aout);
+
+ vlc_assert_locked (&owner->lock);
+ vlc_mutex_lock (&owner->req.lock);
+
+ if (owner->req.device != unset_str)
+ {
+ aout_OutputDeviceSet (aout, owner->req.device);
+ free (owner->req.device);
+ owner->req.device = (char *)unset_str;
+ }
+
+ if (owner->req.volume >= 0.f)
+ {
+ aout_OutputVolumeSet (aout, owner->req.volume);
+ owner->req.volume = -1.f;
+ }
+
+ if (owner->req.mute >= 0)
+ {
+ aout_OutputMuteSet (aout, owner->req.mute);
+ owner->req.mute = -1;
+ }
+
+ vlc_mutex_unlock (&owner->lock);
+ /* If another thread is blocked waiting for owner->req.lock at this point,
+ * this aout_OutputUnlock() call will not see and apply its change request.
+ * The other thread will need to apply the change request itself, which
+ * implies it is able to (try-)lock owner->lock. Therefore this thread must
+ * release owner->lock _before_ owner->req.lock. Do not reorder!!! */
+ vlc_mutex_unlock (&owner->req.lock);
}
/**
- * Configures the dummy volume setter.
- * @note Audio output plugins for which volume is irrelevant
- * should call this function during activation.
+ * Gets the volume of the audio output stream (independent of mute).
+ * \return Current audio volume (0. = silent, 1. = nominal),
+ * or a strictly negative value if undefined.
*/
-void aout_VolumeNoneInit (audio_output_t *aout)
+float aout_VolumeGet (audio_output_t *aout)
{
- /* aout_New() -safely- calls this function without the lock, before any
- * other thread knows of this audio output instance.
- vlc_assert_locked (&aout->lock); */
- aout->pf_volume_set = aout_VolumeNoneSet;
+ return var_GetFloat (aout, "volume");
}
/**
- * Volume setter for software volume.
+ * Sets the volume of the audio output stream.
+ * \note The mute status is not changed.
+ * \return 0 on success, -1 on failure (TODO).
*/
-static int aout_VolumeSoftSet (audio_output_t *aout, float volume, bool mute)
+int aout_VolumeSet (audio_output_t *aout, float vol)
{
- vlc_assert_locked (&aout->lock);
+ aout_owner_t *owner = aout_owner (aout);
- /* Cubic mapping from software volume to amplification factor.
- * This provides a good tradeoff between low and high volume ranges.
- *
- * This code is only used for the VLC software mixer. If you change this
- * formula, be sure to update the aout_VolumeHardInit()-based plugins also.
- */
- if (!mute)
- volume = volume * volume * volume;
- else
- volume = 0.;
+ assert (vol >= 0.f);
+ vlc_mutex_lock (&owner->req.lock);
+ owner->req.volume = vol;
+ vlc_mutex_unlock (&owner->req.lock);
- aout->mixer_multiplier = volume;
+ if (aout_OutputTryLock (aout) == 0)
+ aout_OutputUnlock (aout);
return 0;
}
/**
- * Configures the volume setter for software mixing
- * and apply the default volume.
- * @note Audio output plugins that cannot apply the volume
- * should call this function during activation.
+ * Gets the audio output stream mute flag.
+ * \return 0 if not muted, 1 if muted, -1 if undefined.
*/
-void aout_VolumeSoftInit (audio_output_t *aout)
+int aout_MuteGet (audio_output_t *aout)
{
- audio_volume_t volume = var_InheritInteger (aout, "volume");
- bool mute = var_InheritBool (aout, "mute");
-
- vlc_assert_locked (&aout->lock);
- aout->pf_volume_set = aout_VolumeSoftSet;
- aout_VolumeSoftSet (aout, volume / (float)AOUT_VOLUME_DEFAULT, mute);
+ return var_InheritBool (aout, "mute");
}
/**
- * Configures a custom volume setter. This is used by audio outputs that can
- * control the hardware volume directly and/or emulate it internally.
- * @param setter volume setter callback
+ * Sets the audio output stream mute flag.
+ * \return 0 on success, -1 on failure (TODO).
*/
-void aout_VolumeHardInit (audio_output_t *aout, aout_volume_cb setter)
+int aout_MuteSet (audio_output_t *aout, bool mute)
{
- vlc_assert_locked (&aout->lock);
- aout->pf_volume_set = setter;
+ aout_owner_t *owner = aout_owner (aout);
+
+ vlc_mutex_lock (&owner->req.lock);
+ owner->req.mute = mute;
+ vlc_mutex_unlock (&owner->req.lock);
+
+ if (aout_OutputTryLock (aout) == 0)
+ aout_OutputUnlock (aout);
+ return 0;
}
/**
- * Supply or update the current custom ("hardware") volume.
- * @note This only makes sense after calling aout_VolumeHardInit().
- * @param setter volume setter callback
- * @param volume current custom volume
- * @param mute current mute flag
- * @note Audio output plugins that cannot apply the volume
- * should call this function during activation.
+ * Gets the currently selected device.
+ * \return the selected device ID (caller must free() it)
+ * NULL if no device is selected or in case of error.
*/
-void aout_VolumeHardSet (audio_output_t *aout, float volume, bool mute)
+char *aout_DeviceGet (audio_output_t *aout)
{
-#warning FIXME
- /* REVISIT: This is tricky. We cannot acquire the volume lock as this gets
- * called from the audio output (it would cause a lock inversion).
- * We also should not override the input manager volume, but only the
- * volume of the current audio output... FIXME */
- msg_Err (aout, "%s(%f, %u)", __func__, volume, (unsigned)mute);
+ return var_GetNonEmptyString (aout, "device");
}
-
-/*** Buffer management ***/
-
-/*****************************************************************************
- * aout_OutputNextBuffer : give the audio output plug-in the right buffer
- *****************************************************************************
- * If b_can_sleek is 1, the aout core functions won't try to resample
- * new buffers to catch up - that is we suppose that the output plug-in can
- * compensate it by itself. S/PDIF outputs should always set b_can_sleek = 1.
- * This function is entered with no lock at all :-).
- *****************************************************************************/
-aout_buffer_t * aout_OutputNextBuffer( audio_output_t * p_aout,
- mtime_t start_date,
- bool b_can_sleek )
+/**
+ * Selects an audio output device.
+ * \param id device ID to select, or NULL for the default device
+ * \return zero on success, non-zero on error (TODO).
+ */
+int aout_DeviceSet (audio_output_t *aout, const char *id)
{
- aout_fifo_t *p_fifo = &p_aout->fifo;
- aout_buffer_t * p_buffer;
- mtime_t now = mdate();
-
- aout_lock( p_aout );
+ aout_owner_t *owner = aout_owner (aout);
- /* Drop the audio sample if the audio output is really late.
- * In the case of b_can_sleek, we don't use a resampler so we need to be
- * a lot more severe. */
- while( ((p_buffer = p_fifo->p_first) != NULL)
- && p_buffer->i_pts < (b_can_sleek ? start_date : now) - AOUT_MAX_PTS_DELAY )
+ char *dev = NULL;
+ if (id != NULL)
{
- msg_Dbg( p_aout, "audio output is too slow (%"PRId64"), "
- "trashing %"PRId64"us", now - p_buffer->i_pts,
- p_buffer->i_length );
- aout_BufferFree( aout_FifoPop( p_fifo ) );
+ dev = strdup (id);
+ if (unlikely(dev == NULL))
+ return -1;
}
- if( p_buffer == NULL )
- {
-#if 0 /* This is bad because the audio output might just be trying to fill
- * in its internal buffers. And anyway, it's up to the audio output
- * to deal with this kind of starvation. */
-
- /* Set date to 0, to allow the mixer to send a new buffer ASAP */
- aout_FifoReset( &p_aout->fifo );
- if ( !p_aout->b_starving )
- msg_Dbg( p_aout,
- "audio output is starving (no input), playing silence" );
- p_aout->b_starving = true;
-#endif
- goto out;
- }
+ vlc_mutex_lock (&owner->req.lock);
+ if (owner->req.device != unset_str)
+ free (owner->req.device);
+ owner->req.device = dev;
+ vlc_mutex_unlock (&owner->req.lock);
- mtime_t delta = start_date - p_buffer->i_pts;
- /* Here we suppose that all buffers have the same duration - this is
- * generally true, and anyway if it's wrong it won't be a disaster.
- */
- if ( 0 > delta + p_buffer->i_length )
- {
- if ( !p_aout->b_starving )
- msg_Dbg( p_aout, "audio output is starving (%"PRId64"), "
- "playing silence", -delta );
- p_aout->b_starving = true;
- p_buffer = NULL;
- goto out;
- }
-
- p_aout->b_starving = false;
- p_buffer = aout_FifoPop( p_fifo );
+ if (aout_OutputTryLock (aout) == 0)
+ aout_OutputUnlock (aout);
+ return 0;
+}
- if( !b_can_sleek
- && ( delta > AOUT_MAX_PTS_DELAY || delta < -AOUT_MAX_PTS_ADVANCE ) )
+/**
+ * Enumerates possible audio output devices.
+ *
+ * The function will heap-allocate two tables of heap-allocated strings;
+ * the caller is responsible for freeing all strings and both tables.
+ *
+ * \param ids pointer to a table of device identifiers [OUT]
+ * \param names pointer to a table of device human-readable descriptions [OUT]
+ * \return the number of devices, or negative on error.
+ * \note In case of error, *ids and *names are undefined.
+ */
+int aout_DevicesList (audio_output_t *aout, char ***ids, char ***names)
+{
+ aout_owner_t *owner = aout_owner (aout);
+ char **tabid, **tabname;
+ unsigned count;
+
+ vlc_mutex_lock (&owner->dev.lock);
+ count = owner->dev.count;
+ tabid = xmalloc (sizeof (*tabid) * count);
+ tabname = xmalloc (sizeof (*tabname) * count);
+ *ids = tabid;
+ *names = tabname;
+ for (aout_dev_t *dev = owner->dev.list; dev != NULL; dev = dev->next)
{
- /* Try to compensate the drift by doing some resampling. */
- msg_Warn( p_aout, "output date isn't PTS date, requesting "
- "resampling (%"PRId64")", delta );
-
- aout_FifoMoveDates( &p_aout->p_input->fifo, delta );
- aout_FifoMoveDates( p_fifo, delta );
+ *(tabid++) = xstrdup (dev->id);
+ *(tabname++) = xstrdup (dev->name);
}
-out:
- aout_unlock( p_aout );
- return p_buffer;
+ vlc_mutex_unlock (&owner->dev.lock);
+
+ return count;
}
projects / vlc / blobdiff