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vlc/modules/audio_output/auhal.c
Marvin Scholz 90d73cd561 auhal: remove useless assignment
2021-04-27 17:32:05 +00:00

1775 lines
58 KiB
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/*****************************************************************************
* auhal.c: AUHAL and Coreaudio output plugin
*****************************************************************************
* Copyright (C) 2005 - 2017 VLC authors and VideoLAN
*
* Authors: Derk-Jan Hartman <hartman at videolan dot org>
* Felix Paul Kühne <fkuehne at videolan dot org>
* David Fuhrmann <david dot fuhrmann at googlemail dot com>
*
* 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 Lesser General Public License for more details.
*
* 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.
*****************************************************************************/
#pragma mark includes
#include "coreaudio_common.h"
#include <vlc_plugin.h>
#include <vlc_dialog.h> // vlc_dialog_display_error
#include <vlc_charset.h> // FromCFString
#include <CoreAudio/CoreAudio.h> // AudioDeviceID
#include <CoreServices/CoreServices.h>
#include <IOKit/audio/IOAudioTypes.h>
#pragma mark -
#pragma mark local prototypes & module descriptor
#define AOUT_VOLUME_DEFAULT 256
#define AOUT_VOLUME_MAX 512
#define VOLUME_TEXT N_("Audio volume")
#define VOLUME_LONGTEXT VOLUME_TEXT
#define DEVICE_TEXT N_("Last audio device")
#define DEVICE_LONGTEXT DEVICE_TEXT
static int Open (vlc_object_t *);
static void Close (vlc_object_t *);
vlc_module_begin ()
set_shortname("auhal")
set_description(N_("HAL AudioUnit output"))
set_capability("audio output", 101)
set_category(CAT_AUDIO)
set_subcategory(SUBCAT_AUDIO_AOUT)
set_callbacks(Open, Close)
add_integer("auhal-volume", AOUT_VOLUME_DEFAULT,
VOLUME_TEXT, VOLUME_LONGTEXT, true)
change_integer_range(0, AOUT_VOLUME_MAX)
add_string("auhal-audio-device", "", DEVICE_TEXT, DEVICE_LONGTEXT, true)
add_string("auhal-warned-devices", "", NULL, NULL, true)
change_private()
add_obsolete_integer("macosx-audio-device") /* since 2.1.0 */
vlc_module_end ()
#pragma mark -
#pragma mark private declarations
#define AOUT_VAR_SPDIF_FLAG 0xf00000
/*****************************************************************************
* aout_sys_t: private audio output method descriptor
*****************************************************************************
* This structure is part of the audio output thread descriptor.
* It describes the CoreAudio specific properties of an output thread.
*****************************************************************************/
typedef struct
{
struct aout_sys_common c;
/* DeviceID of the selected device */
AudioObjectID i_selected_dev;
/* DeviceID of device which will be selected on start */
AudioObjectID i_new_selected_dev;
/* true if the user selected the default audio device (id 0) */
bool b_selected_dev_is_default;
/* DeviceID of current device */
AudioDeviceIOProcID i_procID;
/* Are we running in digital mode? */
bool b_digital;
/* AUHAL specific */
AudioUnit au_unit;
/* CoreAudio SPDIF mode specific */
/* Keep the pid of our hog status */
pid_t i_hog_pid;
/* The StreamID that has a cac3 streamformat */
AudioStreamID i_stream_id;
/* The index of i_stream_id in an AudioBufferList */
int i_stream_index;
/* The original format of the stream */
AudioStreamBasicDescription sfmt_revert;
/* Whether we need to revert the stream format */
bool b_revert;
/* Whether we need to set the mixing mode back */
bool b_changed_mixing;
CFArrayRef device_list;
/* protects access to device_list */
vlc_mutex_t device_list_lock;
/* Synchronizes access to i_selected_dev. This is only needed between VLCs
* audio thread and the core audio callback thread. The value is only
* changed in Start, further access to this variable within the audio
* thread (start, stop, close) needs no protection. */
vlc_mutex_t selected_device_lock;
float f_volume;
bool b_mute;
bool b_ignore_streams_changed_callback;
} aout_sys_t;
#pragma mark -
#pragma mark helpers
static int
AoGetProperty(audio_output_t *p_aout, AudioObjectID id,
const AudioObjectPropertyAddress *p_address, size_t i_elm_size,
ssize_t i_nb_expected_elms, size_t *p_nb_elms, void **pp_out_data,
void *p_allocated_out_data)
{
assert(i_elm_size > 0);
/* Get data size */
UInt32 i_out_size;
OSStatus err = AudioObjectGetPropertyDataSize(id, p_address, 0, NULL,
&i_out_size);
if (err != noErr)
{
msg_Err(p_aout, "AudioObjectGetPropertyDataSize failed, device id: %i, "
"prop: [%4.4s], OSStatus: %d", id, (const char *) &p_address[0],
(int)err);
return VLC_EGENERIC;
}
size_t i_nb_elms = i_out_size / i_elm_size;
if (p_nb_elms != NULL)
*p_nb_elms = i_nb_elms;
/* Check if we get the expected number of elements */
if (i_nb_expected_elms != -1 && (size_t)i_nb_expected_elms != i_nb_elms)
{
msg_Err(p_aout, "AoGetProperty error: expected elements don't match");
return VLC_EGENERIC;
}
if (pp_out_data == NULL && p_allocated_out_data == NULL)
return VLC_SUCCESS;
if (i_out_size == 0)
{
if (pp_out_data != NULL)
*pp_out_data = NULL;
return VLC_SUCCESS;
}
/* Alloc data or use pre-allocated one */
void *p_out_data;
if (pp_out_data != NULL)
{
assert(p_allocated_out_data == NULL);
*pp_out_data = malloc(i_out_size);
if (*pp_out_data == NULL)
return VLC_ENOMEM;
p_out_data = *pp_out_data;
}
else
{
assert(p_allocated_out_data != NULL);
p_out_data = p_allocated_out_data;
}
/* Fill data */
err = AudioObjectGetPropertyData(id, p_address, 0, NULL, &i_out_size,
p_out_data);
if (err != noErr)
{
msg_Err(p_aout, "AudioObjectGetPropertyData failed, device id: %i, "
"prop: [%4.4s], OSStatus: %d", id, (const char *) &p_address[0],
(int) err);
if (pp_out_data != NULL)
free(*pp_out_data);
return VLC_EGENERIC;
}
assert(p_nb_elms == NULL || *p_nb_elms == (i_out_size / i_elm_size));
return VLC_SUCCESS;
}
/* Get Audio Object Property data: pp_out_data will be allocated by this MACRO
* and need to be freed in case of success. */
#define AO_GETPROP(id, type, p_out_nb_elms, pp_out_data, a1, a2) \
AoGetProperty(p_aout, (id), \
&(AudioObjectPropertyAddress) {(a1), (a2), 0}, sizeof(type), \
-1, (p_out_nb_elms), (void **)(pp_out_data), NULL)
/* Get 1 Audio Object Property data: pre-allocated by the caller */
#define AO_GET1PROP(id, type, p_out_data, a1, a2) \
AoGetProperty(p_aout, (id), \
&(AudioObjectPropertyAddress) {(a1), (a2), 0}, sizeof(type), \
1, NULL, NULL, (p_out_data))
static bool
AoIsPropertySettable(audio_output_t *p_aout, AudioObjectID id,
const AudioObjectPropertyAddress *p_address)
{
Boolean b_settable;
OSStatus err = AudioObjectIsPropertySettable(id, p_address, &b_settable);
if (err != noErr)
{
msg_Warn(p_aout, "AudioObjectIsPropertySettable failed, device id: %i, "
"prop: [%4.4s], OSStatus: %d", id, (const char *)&p_address[0],
(int)err);
return false;
}
return b_settable;
}
#define AO_ISPROPSETTABLE(id, a1, a2) \
AoIsPropertySettable(p_aout, (id), \
&(AudioObjectPropertyAddress) { (a1), (a2), 0})
#define AO_HASPROP(id, a1, a2) \
AudioObjectHasProperty((id), &(AudioObjectPropertyAddress) { (a1), (a2), 0})
static int
AoSetProperty(audio_output_t *p_aout, AudioObjectID id,
const AudioObjectPropertyAddress *p_address, size_t i_data,
const void *p_data)
{
OSStatus err =
AudioObjectSetPropertyData(id, p_address, 0, NULL, i_data, p_data);
if (err != noErr)
{
msg_Err(p_aout, "AudioObjectSetPropertyData failed, device id: %i, "
"prop: [%4.4s], OSStatus: %d", id, (const char *)&p_address[0],
(int)err);
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
#define AO_SETPROP(id, i_data, p_data, a1, a2) \
AoSetProperty(p_aout, (id), \
&(AudioObjectPropertyAddress) { (a1), (a2), 0}, \
(i_data), (p_data));
static int
AoUpdateListener(audio_output_t *p_aout, bool add, AudioObjectID id,
const AudioObjectPropertyAddress *p_address,
AudioObjectPropertyListenerProc listener, void *data)
{
OSStatus err = add ?
AudioObjectAddPropertyListener(id, p_address, listener, data) :
AudioObjectRemovePropertyListener(id, p_address, listener, data);
if (err != noErr)
{
msg_Err(p_aout, "AudioObject%sPropertyListener failed, device id %i, "
"prop: [%4.4s], OSStatus: %d", add ? "Add" : "Remove", id,
(const char *)&p_address[0], (int)err);
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
#define AO_UPDATELISTENER(id, add, listener, data, a1, a2) \
AoUpdateListener(p_aout, add, (id), \
&(AudioObjectPropertyAddress) { (a1), (a2), 0}, \
(listener), (data))
#pragma mark -
#pragma mark Stream / Hardware Listeners
static bool
IsAudioFormatDigital(AudioFormatID id)
{
switch (id)
{
case 'IAC3':
case 'iac3':
case kAudioFormat60958AC3:
case kAudioFormatAC3:
case kAudioFormatEnhancedAC3:
return true;
default:
return false;
}
}
static OSStatus
StreamsChangedListener(AudioObjectID, UInt32,
const AudioObjectPropertyAddress [], void *);
static int
ManageAudioStreamsCallback(audio_output_t *p_aout, AudioDeviceID i_dev_id,
bool b_register)
{
/* Retrieve all the output streams */
size_t i_streams;
AudioStreamID *p_streams;
int ret = AO_GETPROP(i_dev_id, AudioStreamID, &i_streams, &p_streams,
kAudioDevicePropertyStreams,
kAudioObjectPropertyScopeOutput);
if (ret != VLC_SUCCESS)
return ret;
for (size_t i = 0; i < i_streams; i++)
{
/* get notified when physical formats change */
AO_UPDATELISTENER(p_streams[i], b_register, StreamsChangedListener,
p_aout, kAudioStreamPropertyAvailablePhysicalFormats,
kAudioObjectPropertyScopeGlobal);
}
free(p_streams);
return VLC_SUCCESS;
}
/*
* AudioStreamSupportsDigital: Checks if audio stream is compatible with raw
* bitstreams
*/
static bool
AudioStreamSupportsDigital(audio_output_t *p_aout, AudioStreamID i_stream_id)
{
bool b_return = false;
/* Retrieve all the stream formats supported by each output stream */
size_t i_formats;
AudioStreamRangedDescription *p_format_list;
int ret = AO_GETPROP(i_stream_id, AudioStreamRangedDescription, &i_formats,
&p_format_list,
kAudioStreamPropertyAvailablePhysicalFormats,
kAudioObjectPropertyScopeGlobal);
if (ret != VLC_SUCCESS)
return false;
for (size_t i = 0; i < i_formats; i++)
{
#ifndef NDEBUG
msg_Dbg(p_aout, STREAM_FORMAT_MSG("supported format: ",
p_format_list[i].mFormat));
#endif
if (IsAudioFormatDigital(p_format_list[i].mFormat.mFormatID))
b_return = true;
}
free(p_format_list);
return b_return;
}
/*
* AudioDeviceSupportsDigital: Checks if device supports raw bitstreams
*/
static bool
AudioDeviceSupportsDigital(audio_output_t *p_aout, AudioDeviceID i_dev_id)
{
size_t i_streams;
AudioStreamID * p_streams;
int ret = AO_GETPROP(i_dev_id, AudioStreamID, &i_streams, &p_streams,
kAudioDevicePropertyStreams,
kAudioObjectPropertyScopeOutput);
if (ret != VLC_SUCCESS)
return false;
for (size_t i = 0; i < i_streams; i++)
{
if (AudioStreamSupportsDigital(p_aout, p_streams[i]))
{
free(p_streams);
return true;
}
}
free(p_streams);
return false;
}
static void
ReportDevice(audio_output_t *p_aout, UInt32 i_id, const char *name)
{
char deviceid[10];
sprintf(deviceid, "%i", i_id);
aout_HotplugReport(p_aout, deviceid, name);
}
/*
* AudioDeviceIsAHeadphone: Checks if device is a headphone
*/
static bool
AudioDeviceIsAHeadphone(audio_output_t *p_aout, AudioDeviceID i_dev_id)
{
VLC_UNUSED(p_aout);
UInt32 defaultSize = sizeof(AudioDeviceID);
const AudioObjectPropertyAddress defaultAddr = {
kAudioHardwarePropertyDefaultOutputDevice,
kAudioObjectPropertyScopeGlobal,
kAudioObjectPropertyElementMaster
};
AudioObjectGetPropertyData(kAudioObjectSystemObject, &defaultAddr, 0, NULL, &defaultSize, &i_dev_id);
AudioObjectPropertyAddress property;
property.mSelector = kAudioDevicePropertyDataSource;
property.mScope = kAudioDevicePropertyScopeOutput;
property.mElement = kAudioObjectPropertyElementMaster;
UInt32 data;
UInt32 size = sizeof(UInt32);
AudioObjectGetPropertyData(i_dev_id, &property, 0, NULL, &size, &data);
/*
'hdpn' == headphone (kIOAudioOutputPortSubTypeHeadphones)
'ispk' == internal speaker (kIOAudioOutputPortSubTypeInternalSpeaker)
'61pd' == HDMI
' ' == Bluetooth accessory or AirPlay
*/
return data == kIOAudioOutputPortSubTypeHeadphones;
}
/*
* AudioDeviceHasOutput: Checks if the device is actually an output device
*/
static int
AudioDeviceHasOutput(audio_output_t *p_aout, AudioDeviceID i_dev_id)
{
size_t i_streams;
int ret = AO_GETPROP(i_dev_id, AudioStreamID, &i_streams, NULL,
kAudioDevicePropertyStreams,
kAudioObjectPropertyScopeOutput);
if (ret != VLC_SUCCESS || i_streams == 0)
return FALSE;
return TRUE;
}
static void
RebuildDeviceList(audio_output_t * p_aout, UInt32 *p_id_exists)
{
aout_sys_t *p_sys = p_aout->sys;
msg_Dbg(p_aout, "Rebuild device list");
ReportDevice(p_aout, 0, _("System Sound Output Device"));
/* Get number of devices */
size_t i_devices;
AudioDeviceID *p_devices;
int ret = AO_GETPROP(kAudioObjectSystemObject, AudioDeviceID, &i_devices,
&p_devices, kAudioHardwarePropertyDevices,
kAudioObjectPropertyScopeGlobal);
if (ret != VLC_SUCCESS || i_devices == 0)
{
msg_Err(p_aout, "No audio output devices found.");
return;
}
msg_Dbg(p_aout, "found %zu audio device(s)", i_devices);
/* setup local array */
CFMutableArrayRef currentListOfDevices =
CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks);
UInt32 i_id_exists;
if (p_id_exists)
{
i_id_exists = *p_id_exists;
*p_id_exists = 0;
}
else
i_id_exists = 0;
for (size_t i = 0; i < i_devices; i++)
{
CFStringRef device_name_ref;
char *psz_name;
UInt32 i_id = p_devices[i];
int ret = AO_GET1PROP(i_id, CFStringRef, &device_name_ref,
kAudioObjectPropertyName,
kAudioObjectPropertyScopeGlobal);
if (ret != VLC_SUCCESS)
{
msg_Dbg(p_aout, "failed to get name for device %i", i_id);
continue;
}
psz_name = FromCFString(device_name_ref, kCFStringEncodingUTF8);
CFRelease(device_name_ref);
msg_Dbg(p_aout, "DevID: %i DevName: %s", i_id, psz_name);
if (!AudioDeviceHasOutput(p_aout, i_id))
{
msg_Dbg(p_aout, "this '%s' is INPUT only. skipping...", psz_name);
free(psz_name);
continue;
}
// Report back audio device in analog mode
if (p_id_exists && i_id == i_id_exists)
*p_id_exists = i_id;
ReportDevice(p_aout, i_id, psz_name);
CFNumberRef deviceNumber = CFNumberCreate(kCFAllocatorDefault,
kCFNumberSInt32Type, &i_id);
CFArrayAppendValue(currentListOfDevices, deviceNumber);
CFRelease(deviceNumber);
if (AudioDeviceSupportsDigital(p_aout, i_id))
{
msg_Dbg(p_aout, "'%s' supports digital output", psz_name);
char *psz_encoded_name = nil;
asprintf(&psz_encoded_name, _("%s (Encoded Output)"), psz_name);
i_id = i_id | AOUT_VAR_SPDIF_FLAG;
ReportDevice(p_aout, i_id, psz_encoded_name);
deviceNumber = CFNumberCreate(kCFAllocatorDefault,
kCFNumberSInt32Type, &i_id);
CFArrayAppendValue(currentListOfDevices, deviceNumber);
CFRelease(deviceNumber);
free(psz_encoded_name);
// Report back audio device in digital mode
if (p_id_exists && i_id == i_id_exists)
*p_id_exists = i_id;
}
// TODO: only register once for each device
ManageAudioStreamsCallback(p_aout, p_devices[i], true);
free(psz_name);
}
vlc_mutex_lock(&p_sys->device_list_lock);
CFIndex count = 0;
if (p_sys->device_list)
count = CFArrayGetCount(p_sys->device_list);
CFRange newListSearchRange =
CFRangeMake(0, CFArrayGetCount(currentListOfDevices));
if (count > 0)
{
msg_Dbg(p_aout, "Looking for removed devices");
CFNumberRef cfn_device_id;
int i_device_id = 0;
for (CFIndex x = 0; x < count; x++)
{
if (!CFArrayContainsValue(currentListOfDevices, newListSearchRange,
CFArrayGetValueAtIndex(p_sys->device_list,
x)))
{
cfn_device_id = CFArrayGetValueAtIndex(p_sys->device_list, x);
if (cfn_device_id)
{
CFNumberGetValue(cfn_device_id, kCFNumberSInt32Type,
&i_device_id);
msg_Dbg(p_aout, "Device ID %i is not found in new array, "
"deleting.", i_device_id);
ReportDevice(p_aout, i_device_id, NULL);
}
}
}
}
if (p_sys->device_list)
CFRelease(p_sys->device_list);
p_sys->device_list = CFArrayCreateCopy(kCFAllocatorDefault,
currentListOfDevices);
CFRelease(currentListOfDevices);
vlc_mutex_unlock(&p_sys->device_list_lock);
free(p_devices);
}
/*
* Callback when current device is not alive anymore
*/
static OSStatus
DeviceAliveListener(AudioObjectID inObjectID, UInt32 inNumberAddresses,
const AudioObjectPropertyAddress inAddresses[],
void *inClientData)
{
VLC_UNUSED(inObjectID);
VLC_UNUSED(inNumberAddresses);
VLC_UNUSED(inAddresses);
audio_output_t *p_aout = (audio_output_t *)inClientData;
if (!p_aout)
return -1;
msg_Warn(p_aout, "audio device died, resetting aout");
aout_RestartRequest(p_aout, AOUT_RESTART_OUTPUT);
return noErr;
}
/*
* Callback when default audio device changed
*/
static OSStatus
DefaultDeviceChangedListener(AudioObjectID inObjectID, UInt32 inNumberAddresses,
const AudioObjectPropertyAddress inAddresses[],
void *inClientData)
{
VLC_UNUSED(inObjectID);
VLC_UNUSED(inNumberAddresses);
VLC_UNUSED(inAddresses);
audio_output_t *p_aout = (audio_output_t *)inClientData;
if (!p_aout)
return -1;
aout_sys_t *p_sys = p_aout->sys;
if (!p_sys->b_selected_dev_is_default)
return noErr;
AudioObjectID defaultDeviceID;
int ret = AO_GET1PROP(kAudioObjectSystemObject, AudioObjectID,
&defaultDeviceID,
kAudioHardwarePropertyDefaultOutputDevice,
kAudioObjectPropertyScopeOutput);
if (ret != VLC_SUCCESS)
return -1;
msg_Dbg(p_aout, "default device changed to %i", defaultDeviceID);
/* Default device is changed by the os to allow other apps to play sound
* while in digital mode. But this should not affect ourself. */
if (p_sys->b_digital)
{
msg_Dbg(p_aout, "ignore, as digital mode is active");
return noErr;
}
vlc_mutex_lock(&p_sys->selected_device_lock);
/* Also ignore events which announce the same device id */
if (defaultDeviceID != p_sys->i_selected_dev)
{
msg_Dbg(p_aout, "default device actually changed, resetting aout");
aout_RestartRequest(p_aout, AOUT_RESTART_OUTPUT);
}
vlc_mutex_unlock(&p_sys->selected_device_lock);
return noErr;
}
/*
* Callback when physical formats for device change
*/
static OSStatus
StreamsChangedListener(AudioObjectID inObjectID, UInt32 inNumberAddresses,
const AudioObjectPropertyAddress inAddresses[],
void *inClientData)
{
VLC_UNUSED(inNumberAddresses);
VLC_UNUSED(inAddresses);
audio_output_t *p_aout = (audio_output_t *)inClientData;
if (!p_aout)
return -1;
aout_sys_t *p_sys = p_aout->sys;
if(unlikely(p_sys->b_ignore_streams_changed_callback == true))
return 0;
msg_Dbg(p_aout, "available physical formats for audio device changed");
RebuildDeviceList(p_aout, NULL);
vlc_mutex_lock(&p_sys->selected_device_lock);
/* In this case audio has not yet started. Below code will not work and is
* not needed here. */
if (p_sys->i_selected_dev == 0)
{
vlc_mutex_unlock(&p_sys->selected_device_lock);
return 0;
}
/*
* check if changed stream id belongs to current device
*/
size_t i_streams;
AudioStreamID *p_streams;
int ret = AO_GETPROP(p_sys->i_selected_dev, AudioStreamID, &i_streams,
&p_streams, kAudioDevicePropertyStreams,
kAudioObjectPropertyScopeOutput);
if (ret != VLC_SUCCESS)
{
vlc_mutex_unlock(&p_sys->selected_device_lock);
return ret;
}
vlc_mutex_unlock(&p_sys->selected_device_lock);
for (size_t i = 0; i < i_streams; i++)
{
if (p_streams[i] == inObjectID)
{
msg_Dbg(p_aout, "Restart aout as this affects current device");
aout_RestartRequest(p_aout, AOUT_RESTART_OUTPUT);
break;
}
}
free(p_streams);
return noErr;
}
/*
* Callback when device list changed
*/
static OSStatus
DevicesListener(AudioObjectID inObjectID, UInt32 inNumberAddresses,
const AudioObjectPropertyAddress inAddresses[],
void *inClientData)
{
VLC_UNUSED(inObjectID);
VLC_UNUSED(inNumberAddresses);
VLC_UNUSED(inAddresses);
audio_output_t *p_aout = (audio_output_t *)inClientData;
if (!p_aout)
return -1;
aout_sys_t *p_sys = p_aout->sys;
msg_Dbg(p_aout, "audio device configuration changed, resetting cache");
RebuildDeviceList(p_aout, NULL);
vlc_mutex_lock(&p_sys->selected_device_lock);
vlc_mutex_lock(&p_sys->device_list_lock);
CFNumberRef selectedDevice =
CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type,
&p_sys->i_selected_dev);
CFRange range = CFRangeMake(0, CFArrayGetCount(p_sys->device_list));
if (!CFArrayContainsValue(p_sys->device_list, range, selectedDevice))
aout_RestartRequest(p_aout, AOUT_RESTART_OUTPUT);
CFRelease(selectedDevice);
vlc_mutex_unlock(&p_sys->device_list_lock);
vlc_mutex_unlock(&p_sys->selected_device_lock);
return noErr;
}
/*
* StreamListener: check whether the device's physical format change is complete
*/
static OSStatus
StreamListener(AudioObjectID inObjectID, UInt32 inNumberAddresses,
const AudioObjectPropertyAddress inAddresses[],
void *inClientData)
{
OSStatus err = noErr;
struct { vlc_mutex_t lock; vlc_cond_t cond; } * w = inClientData;
VLC_UNUSED(inObjectID);
for (unsigned int i = 0; i < inNumberAddresses; i++)
{
if (inAddresses[i].mSelector == kAudioStreamPropertyPhysicalFormat)
{
int canc = vlc_savecancel();
vlc_mutex_lock(&w->lock);
vlc_cond_signal(&w->cond);
vlc_mutex_unlock(&w->lock);
vlc_restorecancel(canc);
break;
}
}
return err;
}
/*
* AudioStreamChangeFormat: switch stream format based on the provided
* description
*/
static int
AudioStreamChangeFormat(audio_output_t *p_aout, AudioStreamID i_stream_id,
AudioStreamBasicDescription change_format)
{
int retValue = false;
struct { vlc_mutex_t lock; vlc_cond_t cond; } w;
msg_Dbg(p_aout, STREAM_FORMAT_MSG("setting stream format: ", change_format));
/* Condition because SetProperty is asynchronious */
vlc_cond_init(&w.cond);
vlc_mutex_init(&w.lock);
vlc_mutex_lock(&w.lock);
/* Install the callback */
int ret = AO_UPDATELISTENER(i_stream_id, true, StreamListener, &w,
kAudioStreamPropertyPhysicalFormat,
kAudioObjectPropertyScopeGlobal);
if (ret != VLC_SUCCESS)
{
retValue = false;
goto out;
}
/* change the format */
ret = AO_SETPROP(i_stream_id, sizeof(AudioStreamBasicDescription),
&change_format, kAudioStreamPropertyPhysicalFormat,
kAudioObjectPropertyScopeGlobal);
if (ret != VLC_SUCCESS)
{
retValue = false;
goto out;
}
/* The AudioStreamSetProperty is not only asynchronious (requiring the
* locks) it is also not atomic in its behaviour. Therefore we check 9
* times before we really give up.
*/
for (int i = 0; i < 9; i++)
{
/* Callback is not always invoked. So first check if format is already
* set. */
if (i > 0)
{
vlc_tick_t timeout = vlc_tick_now() + VLC_TICK_FROM_MS(500);
if (vlc_cond_timedwait(&w.cond, &w.lock, timeout))
msg_Dbg(p_aout, "reached timeout");
}
AudioStreamBasicDescription actual_format;
int ret = AO_GET1PROP(i_stream_id, AudioStreamBasicDescription,
&actual_format,
kAudioStreamPropertyPhysicalFormat,
kAudioObjectPropertyScopeGlobal);
if (ret != VLC_SUCCESS)
continue;
msg_Dbg(p_aout, STREAM_FORMAT_MSG("actual format in use: ",
actual_format));
if (actual_format.mSampleRate == change_format.mSampleRate &&
actual_format.mFormatID == change_format.mFormatID &&
actual_format.mFramesPerPacket == change_format.mFramesPerPacket)
{
/* The right format is now active */
retValue = true;
break;
}
/* We need to check again */
}
out:
vlc_mutex_unlock(&w.lock);
/* Removing the property listener */
ret = AO_UPDATELISTENER(i_stream_id, false, StreamListener, &w,
kAudioStreamPropertyPhysicalFormat,
kAudioObjectPropertyScopeGlobal);
if (ret != VLC_SUCCESS)
retValue = false;
return retValue;
}
#pragma mark -
#pragma mark core interaction
static int
SwitchAudioDevice(audio_output_t *p_aout, const char *name)
{
aout_sys_t *p_sys = p_aout->sys;
p_sys->i_new_selected_dev = (name) ? atoi(name) : 0;
aout_DeviceReport(p_aout, name);
aout_RestartRequest(p_aout, AOUT_RESTART_OUTPUT);
return 0;
}
static int
VolumeSet(audio_output_t * p_aout, float volume)
{
aout_sys_t *p_sys = p_aout->sys;
OSStatus err = noErr;
if (p_sys->b_digital)
return VLC_EGENERIC;
p_sys->f_volume = volume;
aout_VolumeReport(p_aout, volume);
/* Set volume for output unit */
if (!p_sys->b_mute)
{
err = AudioUnitSetParameter(p_sys->au_unit,
kHALOutputParam_Volume,
kAudioUnitScope_Global,
0,
volume * volume * volume,
0);
}
if (var_InheritBool(p_aout, "volume-save"))
config_PutInt("auhal-volume", lroundf(volume * AOUT_VOLUME_DEFAULT));
return (err == noErr) ? VLC_SUCCESS : VLC_EGENERIC;
}
static int
MuteSet(audio_output_t * p_aout, bool mute)
{
aout_sys_t *p_sys = p_aout->sys;
if (p_sys->b_digital)
return VLC_EGENERIC;
p_sys->b_mute = mute;
aout_MuteReport(p_aout, mute);
float volume = .0;
if (!mute)
volume = p_sys->f_volume;
OSStatus err =
AudioUnitSetParameter(p_sys->au_unit, kHALOutputParam_Volume,
kAudioUnitScope_Global, 0,
volume * volume * volume, 0);
return (err == noErr) ? VLC_SUCCESS : VLC_EGENERIC;
}
#pragma mark -
#pragma mark actual playback
/*
* RenderCallbackSPDIF: callback for SPDIF audio output
*/
static OSStatus
RenderCallbackSPDIF(AudioDeviceID inDevice, const AudioTimeStamp * inNow,
const AudioBufferList * inInputData,
const AudioTimeStamp * inInputTime,
AudioBufferList * outOutputData,
const AudioTimeStamp * inOutputTime, void *p_data)
{
VLC_UNUSED(inNow);
VLC_UNUSED(inDevice);
VLC_UNUSED(inInputData);
VLC_UNUSED(inInputTime);
VLC_UNUSED(inOutputTime);
audio_output_t * p_aout = p_data;
aout_sys_t *p_sys = p_aout->sys;
uint8_t *p_output = outOutputData->mBuffers[p_sys->i_stream_index].mData;
size_t i_size = outOutputData->mBuffers[p_sys->i_stream_index].mDataByteSize;
uint64_t i_host_time = (inOutputTime->mFlags & kAudioTimeStampHostTimeValid)
? inOutputTime->mHostTime : 0;
ca_Render(p_aout, 0, i_host_time, p_output, i_size);
return noErr;
}
#pragma mark -
#pragma mark initialization
static void
WarnConfiguration(audio_output_t *p_aout)
{
aout_sys_t *p_sys = p_aout->sys;
char *warned_devices = var_CreateGetNonEmptyString(p_aout, "auhal-warned-devices");
bool dev_is_warned = false;
unsigned dev_count = 0;
/* Check if the actual device was already warned */
if (warned_devices)
{
char *dup = strdup(warned_devices);
if (dup)
{
char *savetpr;
for (const char *dev = strtok_r(dup, ";", &savetpr);
dev != NULL && !dev_is_warned;
dev = strtok_r(NULL, ";", &savetpr))
{
dev_count++;
int devid = atoi(dev);
if (devid >= 0 && (unsigned) devid == p_sys->i_selected_dev)
{
dev_is_warned = true;
break;
}
}
free(dup);
}
}
/* Warn only one time per device */
if (!dev_is_warned)
{
msg_Warn(p_aout, "You should configure your speaker layout with "
"Audio Midi Setup in /Applications/Utilities. VLC will "
"output Stereo only.");
vlc_dialog_display_error(p_aout,
_("Audio device is not configured"), "%s",
_("You should configure your speaker layout with "
"\"Audio Midi Setup\" in /Applications/"
"Utilities. VLC will output Stereo only."));
/* Don't save too many devices */
if (dev_count >= 10)
{
char *end = strrchr(warned_devices, ';');
if (end)
*end = 0;
}
/* Add the actual device to the list of warned devices */
char *new_warned_devices;
if (asprintf(&new_warned_devices, "%u%s%s", p_sys->i_selected_dev,
warned_devices ? ";" : "",
warned_devices ? warned_devices : "") != -1)
{
config_PutPsz("auhal-warned-devices", new_warned_devices);
var_SetString(p_aout, "auhal-warned-devices", new_warned_devices);
free(new_warned_devices);
}
}
free(warned_devices);
}
/*
* StartAnalog: open and setup a HAL AudioUnit to do PCM audio output
*/
static int
StartAnalog(audio_output_t *p_aout, audio_sample_format_t *fmt)
{
aout_sys_t *p_sys = p_aout->sys;
OSStatus err = noErr;
UInt32 i_param_size;
AudioChannelLayout *layout = NULL;
if (aout_FormatNbChannels(fmt) == 0)
return VLC_EGENERIC;
p_sys->au_unit = au_NewOutputInstance(p_aout, kAudioUnitSubType_HALOutput);
if (p_sys->au_unit == NULL)
return VLC_EGENERIC;
p_aout->current_sink_info.headphones = AudioDeviceIsAHeadphone(p_aout, p_sys->i_selected_dev);
/* Set the device we will use for this output unit */
err = AudioUnitSetProperty(p_sys->au_unit,
kAudioOutputUnitProperty_CurrentDevice,
kAudioUnitScope_Global, 0,
&p_sys->i_selected_dev, sizeof(AudioObjectID));
if (err != noErr)
{
ca_LogErr("cannot select audio output device, PCM output failed");
goto error;
}
/* Get the channel layout of the device side of the unit (vlc -> unit ->
* device) */
err = AudioUnitGetPropertyInfo(p_sys->au_unit,
kAudioDevicePropertyPreferredChannelLayout,
kAudioUnitScope_Output, 0, &i_param_size,
NULL);
if (err == noErr)
{
layout = (AudioChannelLayout *)malloc(i_param_size);
if (layout == NULL)
goto error;
OSStatus err =
AudioUnitGetProperty(p_sys->au_unit,
kAudioDevicePropertyPreferredChannelLayout,
kAudioUnitScope_Output, 0, layout,
&i_param_size);
if (err != noErr)
goto error;
}
else
ca_LogWarn("device driver does not support "
"kAudioDevicePropertyPreferredChannelLayout - using stereo");
/* Do the last VLC aout setups */
bool warn_configuration;
int ret = au_Initialize(p_aout, p_sys->au_unit, fmt, layout, 0,
&warn_configuration);
if (ret != VLC_SUCCESS)
goto error;
err = AudioOutputUnitStart(p_sys->au_unit);
if (err != noErr)
{
ca_LogErr("AudioUnitStart failed");
au_Uninitialize(p_aout, p_sys->au_unit);
goto error;
}
/* Set volume for output unit */
VolumeSet(p_aout, p_sys->f_volume);
MuteSet(p_aout, p_sys->b_mute);
free(layout);
if (warn_configuration)
WarnConfiguration(p_aout);
return VLC_SUCCESS;
error:
AudioComponentInstanceDispose(p_sys->au_unit);
free(layout);
return VLC_EGENERIC;
}
/*
* StartSPDIF: Setup an encoded digital stream (SPDIF) output
*/
static int
StartSPDIF(audio_output_t * p_aout, audio_sample_format_t *fmt)
{
aout_sys_t *p_sys = p_aout->sys;
int ret;
/* Check if device supports digital */
if (!AudioDeviceSupportsDigital(p_aout, p_sys->i_selected_dev))
{
msg_Dbg(p_aout, "Audio device supports PCM mode only");
return VLC_EGENERIC;
}
ret = AO_GET1PROP(p_sys->i_selected_dev, pid_t, &p_sys->i_hog_pid,
kAudioDevicePropertyHogMode,
kAudioObjectPropertyScopeOutput);
if (ret != VLC_SUCCESS)
{
/* This is not a fatal error. Some drivers simply don't support this
* property */
p_sys->i_hog_pid = -1;
}
if (p_sys->i_hog_pid != -1 && p_sys->i_hog_pid != getpid())
{
msg_Err(p_aout, "Selected audio device is exclusively in use by another"
" program.");
vlc_dialog_display_error(p_aout, _("Audio output failed"), "%s",
_("The selected audio output device is exclusively in "
"use by another program."));
return VLC_EGENERIC;
}
AudioStreamBasicDescription desired_stream_format;
memset(&desired_stream_format, 0, sizeof(desired_stream_format));
/* Start doing the SPDIF setup proces */
p_sys->b_digital = true;
/* Hog the device */
p_sys->i_hog_pid = getpid();
/*
* HACK: On 10.6, auhal will trigger the streams changed callback when
* calling below line, directly in the same thread. This call needs to be
* ignored to avoid endless restarting.
*/
p_sys->b_ignore_streams_changed_callback = true;
ret = AO_SETPROP(p_sys->i_selected_dev, sizeof(p_sys->i_hog_pid),
&p_sys->i_hog_pid, kAudioDevicePropertyHogMode,
kAudioObjectPropertyScopeOutput);
p_sys->b_ignore_streams_changed_callback = false;
if (ret != VLC_SUCCESS)
return ret;
if (AO_HASPROP(p_sys->i_selected_dev, kAudioDevicePropertySupportsMixing,
kAudioObjectPropertyScopeGlobal))
{
/* Set mixable to false if we are allowed to */
UInt32 b_mix;
bool b_writeable = AO_ISPROPSETTABLE(p_sys->i_selected_dev,
kAudioDevicePropertySupportsMixing,
kAudioObjectPropertyScopeGlobal);
ret = AO_GET1PROP(p_sys->i_selected_dev, UInt32, &b_mix,
kAudioDevicePropertySupportsMixing,
kAudioObjectPropertyScopeGlobal);
if (ret == VLC_SUCCESS && b_writeable)
{
b_mix = 0;
ret = AO_SETPROP(p_sys->i_selected_dev, sizeof(UInt32), &b_mix,
kAudioDevicePropertySupportsMixing,
kAudioObjectPropertyScopeGlobal);
p_sys->b_changed_mixing = true;
}
if (ret != VLC_SUCCESS)
{
msg_Err(p_aout, "failed to set mixmode");
return ret;
}
}
/* Get a list of all the streams on this device */
size_t i_streams;
AudioStreamID *p_streams;
ret = AO_GETPROP(p_sys->i_selected_dev, AudioStreamID, &i_streams,
&p_streams, kAudioDevicePropertyStreams,
kAudioObjectPropertyScopeOutput);
if (ret != VLC_SUCCESS)
return ret;
for (unsigned i = 0; i < i_streams && p_sys->i_stream_index < 0 ; i++)
{
/* Find a stream with a cac3 stream */
bool b_digital = false;
/* Retrieve all the stream formats supported by each output stream */
size_t i_formats;
AudioStreamRangedDescription *p_format_list;
int ret = AO_GETPROP(p_streams[i], AudioStreamRangedDescription,
&i_formats, &p_format_list,
kAudioStreamPropertyAvailablePhysicalFormats,
kAudioObjectPropertyScopeGlobal);
if (ret != VLC_SUCCESS)
continue;
/* Check if one of the supported formats is a digital format */
for (size_t j = 0; j < i_formats; j++)
{
if (IsAudioFormatDigital(p_format_list[j].mFormat.mFormatID))
{
b_digital = true;
break;
}
}
if (b_digital)
{
/* if this stream supports a digital (cac3) format, then go set it.
* */
int i_requested_rate_format = -1;
int i_current_rate_format = -1;
int i_backup_rate_format = -1;
if (!p_sys->b_revert)
{
/* Retrieve the original format of this stream first if not
* done so already */
AudioStreamBasicDescription current_streamformat;
int ret = AO_GET1PROP(p_streams[i], AudioStreamBasicDescription,
&current_streamformat,
kAudioStreamPropertyPhysicalFormat,
kAudioObjectPropertyScopeGlobal);
if (ret != VLC_SUCCESS)
continue;
/*
* Only the first found format id is accepted. In case of
* another id later on, we still use the already saved one.
* This can happen if the user plugs in a spdif cable while a
* stream is already playing. Then, auhal already misleadingly
* reports an ac3 format here whereas the original format
* should be still pcm.
*/
if (p_sys->sfmt_revert.mFormatID > 0
&& p_sys->sfmt_revert.mFormatID != current_streamformat.mFormatID
&& p_streams[i] == p_sys->i_stream_id)
{
msg_Warn(p_aout, STREAM_FORMAT_MSG("Detected current stream"
" format: ", current_streamformat));
msg_Warn(p_aout, "... there is another stream format "
"already stored, the current one is ignored");
}
else
p_sys->sfmt_revert = current_streamformat;
p_sys->b_revert = true;
}
p_sys->i_stream_id = p_streams[i];
p_sys->i_stream_index = i;
for (size_t j = 0; j < i_formats; j++)
{
if (IsAudioFormatDigital(p_format_list[j].mFormat.mFormatID))
{
if (p_format_list[j].mFormat.mSampleRate == fmt->i_rate)
{
i_requested_rate_format = j;
break;
}
else if (p_format_list[j].mFormat.mSampleRate ==
p_sys->sfmt_revert.mSampleRate)
i_current_rate_format = j;
else
{
if (i_backup_rate_format < 0
|| p_format_list[j].mFormat.mSampleRate >
p_format_list[i_backup_rate_format].mFormat.mSampleRate)
i_backup_rate_format = j;
}
}
}
if (i_requested_rate_format >= 0)
{
/* We prefer to output at the samplerate of the original audio */
desired_stream_format =
p_format_list[i_requested_rate_format].mFormat;
}
else if (i_current_rate_format >= 0)
{
/* If not possible, we will try to use the current samplerate
* of the device */
desired_stream_format =
p_format_list[i_current_rate_format].mFormat;
}
else
{
/* And if we have to, any digital format will be just fine
* (highest rate possible) */
desired_stream_format =
p_format_list[i_backup_rate_format].mFormat;
}
}
free(p_format_list);
}
free(p_streams);
msg_Dbg(p_aout, STREAM_FORMAT_MSG("original stream format: ",
p_sys->sfmt_revert));
if (!AudioStreamChangeFormat(p_aout, p_sys->i_stream_id, desired_stream_format))
{
msg_Err(p_aout, "failed to change stream format for SPDIF output");
return VLC_EGENERIC;
}
/* Set the format flags */
if (desired_stream_format.mFormatFlags & kAudioFormatFlagIsBigEndian)
fmt->i_format = VLC_CODEC_SPDIFB;
else
fmt->i_format = VLC_CODEC_SPDIFL;
fmt->i_bytes_per_frame = AOUT_SPDIF_SIZE;
fmt->i_frame_length = A52_FRAME_NB;
fmt->i_rate = (unsigned int)desired_stream_format.mSampleRate;
aout_FormatPrepare(fmt);
/* Add IOProc callback */
OSStatus err =
AudioDeviceCreateIOProcID(p_sys->i_selected_dev,
RenderCallbackSPDIF,
p_aout, &p_sys->i_procID);
if (err != noErr)
{
ca_LogErr("Failed to create Process ID");
return VLC_EGENERIC;
}
ret = ca_Initialize(p_aout, fmt, 0);
if (ret != VLC_SUCCESS)
{
AudioDeviceDestroyIOProcID(p_sys->i_selected_dev, p_sys->i_procID);
return VLC_EGENERIC;
}
/* Start device */
err = AudioDeviceStart(p_sys->i_selected_dev, p_sys->i_procID);
if (err != noErr)
{
ca_LogErr("Failed to start audio device");
err = AudioDeviceDestroyIOProcID(p_sys->i_selected_dev, p_sys->i_procID);
if (err != noErr)
ca_LogErr("Failed to destroy process ID");
return VLC_EGENERIC;
}
msg_Dbg(p_aout, "Using audio device for digital output");
return VLC_SUCCESS;
}
static void
Stop(audio_output_t *p_aout)
{
aout_sys_t *p_sys = p_aout->sys;
OSStatus err = noErr;
msg_Dbg(p_aout, "Stopping the auhal module");
if (p_sys->au_unit)
{
AudioOutputUnitStop(p_sys->au_unit);
au_Uninitialize(p_aout, p_sys->au_unit);
AudioComponentInstanceDispose(p_sys->au_unit);
}
else
{
assert(p_sys->b_digital);
/* Stop device */
err = AudioDeviceStop(p_sys->i_selected_dev,
p_sys->i_procID);
if (err != noErr)
ca_LogErr("AudioDeviceStop failed");
/* Remove IOProc callback */
err = AudioDeviceDestroyIOProcID(p_sys->i_selected_dev,
p_sys->i_procID);
if (err != noErr)
ca_LogErr("Failed to destroy Process ID");
if (p_sys->b_revert
&& !AudioStreamChangeFormat(p_aout, p_sys->i_stream_id, p_sys->sfmt_revert))
msg_Err(p_aout, "failed to revert stream format in close");
if (p_sys->b_changed_mixing
&& p_sys->sfmt_revert.mFormatID != kAudioFormat60958AC3)
{
UInt32 b_mix;
/* Revert mixable to true if we are allowed to */
bool b_writeable =
AO_ISPROPSETTABLE(p_sys->i_selected_dev,
kAudioDevicePropertySupportsMixing,
kAudioObjectPropertyScopeGlobal);
int ret = AO_GET1PROP(p_sys->i_selected_dev, UInt32, &b_mix,
kAudioDevicePropertySupportsMixing,
kAudioObjectPropertyScopeOutput);
if (ret == VLC_SUCCESS && b_writeable)
{
msg_Dbg(p_aout, "mixable is: %d", b_mix);
b_mix = 1;
ret = AO_SETPROP(p_sys->i_selected_dev,
sizeof(UInt32), &b_mix,
kAudioDevicePropertySupportsMixing,
kAudioObjectPropertyScopeOutput);
}
if (ret != VLC_SUCCESS)
msg_Err(p_aout, "failed to re-set mixmode");
}
ca_Uninitialize(p_aout);
if (p_sys->i_hog_pid == getpid())
{
p_sys->i_hog_pid = -1;
/*
* HACK: On 10.6, auhal will trigger the streams changed callback
* when calling below line, directly in the same thread. This call
* needs to be ignored to avoid endless restarting.
*/
p_sys->b_ignore_streams_changed_callback = true;
AO_SETPROP(p_sys->i_selected_dev, sizeof(p_sys->i_hog_pid),
&p_sys->i_hog_pid, kAudioDevicePropertyHogMode,
kAudioObjectPropertyScopeOutput);
p_sys->b_ignore_streams_changed_callback = false;
}
p_sys->b_digital = false;
}
/* remove audio device alive callback */
AO_UPDATELISTENER(p_sys->i_selected_dev, false, DeviceAliveListener, p_aout,
kAudioDevicePropertyDeviceIsAlive,
kAudioObjectPropertyScopeGlobal);
}
static int
Start(audio_output_t *p_aout, audio_sample_format_t *restrict fmt)
{
UInt32 i_param_size = 0;
aout_sys_t *p_sys = NULL;
/* Use int here, to match kAudioDevicePropertyDeviceIsAlive
* property size */
int b_alive = false;
if (AOUT_FMT_HDMI(fmt))
return VLC_EGENERIC;
p_sys = p_aout->sys;
p_sys->b_digital = false;
p_sys->au_unit = NULL;
p_sys->i_stream_index = -1;
p_sys->b_revert = false;
p_sys->b_changed_mixing = false;
vlc_mutex_lock(&p_sys->selected_device_lock);
bool do_spdif;
if (AOUT_FMT_SPDIF (fmt))
{
if (!(p_sys->i_new_selected_dev & AOUT_VAR_SPDIF_FLAG))
{
vlc_mutex_unlock(&p_sys->selected_device_lock);
return VLC_EGENERIC;
}
do_spdif = true;
}
else
do_spdif = false;
p_sys->i_selected_dev = p_sys->i_new_selected_dev & ~AOUT_VAR_SPDIF_FLAG;
aout_FormatPrint(p_aout, "VLC is looking for:", fmt);
msg_Dbg(p_aout, "attempting to use device %i", p_sys->i_selected_dev);
if (p_sys->i_selected_dev > 0)
{
/* Check if device is in devices list. Only checking for
* kAudioDevicePropertyDeviceIsAlive is not sufficient, as a former
* airplay device might be already gone, but the device number might be
* still valid. Core Audio even says that this device would be alive.
* Don't ask why, its Core Audio. */
CFIndex count = CFArrayGetCount(p_sys->device_list);
CFNumberRef deviceNumber =
CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type,
&p_sys->i_selected_dev);
if (CFArrayContainsValue(p_sys->device_list,
CFRangeMake(0, count), deviceNumber))
{
/* Check if the desired device is alive and usable */
i_param_size = sizeof(b_alive);
int ret = AO_GET1PROP(p_sys->i_selected_dev, int, &b_alive,
kAudioDevicePropertyDeviceIsAlive,
kAudioObjectPropertyScopeGlobal);
if (ret != VLC_SUCCESS)
b_alive = false; /* Be tolerant */
if (!b_alive)
msg_Warn(p_aout, "selected audio device is not alive, switching"
" to default device");
}
else
{
msg_Warn(p_aout, "device id %i not found in the current devices "
"list, fallback to default device", p_sys->i_selected_dev);
}
CFRelease(deviceNumber);
}
p_sys->b_selected_dev_is_default = false;
if (!b_alive || p_sys->i_selected_dev == 0)
{
p_sys->b_selected_dev_is_default = true;
AudioObjectID defaultDeviceID = 0;
int ret = AO_GET1PROP(kAudioObjectSystemObject, AudioObjectID,
&defaultDeviceID,
kAudioHardwarePropertyDefaultOutputDevice,
kAudioObjectPropertyScopeOutput);
if (ret != VLC_SUCCESS)
{
vlc_mutex_unlock(&p_sys->selected_device_lock);
return VLC_EGENERIC;
}
else
msg_Dbg(p_aout, "using default audio device %i", defaultDeviceID);
p_sys->i_selected_dev = defaultDeviceID;
}
vlc_mutex_unlock(&p_sys->selected_device_lock);
/* add a callback to see if the device dies later on */
AO_UPDATELISTENER(p_sys->i_selected_dev, true, DeviceAliveListener, p_aout,
kAudioDevicePropertyDeviceIsAlive,
kAudioObjectPropertyScopeGlobal);
/* get device latency */
UInt32 i_latency_samples;
vlc_tick_t i_latency_us = 0;
int ret = AO_GET1PROP(p_sys->i_selected_dev, UInt32, &i_latency_samples,
kAudioDevicePropertyLatency,
kAudioObjectPropertyScopeOutput);
if (ret == VLC_SUCCESS)
i_latency_us += vlc_tick_from_samples(i_latency_samples, fmt->i_rate);
msg_Dbg(p_aout, "Current device has a latency of %lld us", i_latency_us);
/* Check for Digital mode or Analog output mode */
if (do_spdif)
{
if (StartSPDIF(p_aout, fmt) == VLC_SUCCESS)
{
msg_Dbg(p_aout, "digital output successfully opened");
return VLC_SUCCESS;
}
}
else
{
if (StartAnalog(p_aout, fmt) == VLC_SUCCESS)
{
msg_Dbg(p_aout, "analog output successfully opened");
fmt->channel_type = AUDIO_CHANNEL_TYPE_BITMAP;
return VLC_SUCCESS;
}
}
msg_Err(p_aout, "opening auhal output failed");
AO_UPDATELISTENER(p_sys->i_selected_dev, false, DeviceAliveListener, p_aout,
kAudioDevicePropertyDeviceIsAlive,
kAudioObjectPropertyScopeGlobal);
return VLC_EGENERIC;
}
static void Close(vlc_object_t *obj)
{
audio_output_t *p_aout = (audio_output_t *)obj;
aout_sys_t *p_sys = p_aout->sys;
/* remove audio devices callback */
AO_UPDATELISTENER(kAudioObjectSystemObject, false, DevicesListener, p_aout,
kAudioHardwarePropertyDevices,
kAudioObjectPropertyScopeGlobal);
/* remove listener to be notified about changes in default audio device */
AO_UPDATELISTENER(kAudioObjectSystemObject, false,
DefaultDeviceChangedListener, p_aout,
kAudioHardwarePropertyDefaultOutputDevice,
kAudioObjectPropertyScopeGlobal);
/*
* StreamsChangedListener can rebuild the device list and thus held the
* device_list_lock. To avoid a possible deadlock, an array copy is
* created here. In rare cases, this can lead to missing
* StreamsChangedListener callback deregistration (TODO).
*/
vlc_mutex_lock(&p_sys->device_list_lock);
CFArrayRef device_list_cpy = CFArrayCreateCopy(NULL, p_sys->device_list);
vlc_mutex_unlock(&p_sys->device_list_lock);
/* remove streams callbacks */
CFIndex count = CFArrayGetCount(device_list_cpy);
if (count > 0)
{
for (CFIndex x = 0; x < count; x++)
{
AudioDeviceID deviceId = 0;
CFNumberRef cfn_device_id =
CFArrayGetValueAtIndex(device_list_cpy, x);
if (!cfn_device_id)
continue;
CFNumberGetValue(cfn_device_id, kCFNumberSInt32Type, &deviceId);
if (!(deviceId & AOUT_VAR_SPDIF_FLAG))
ManageAudioStreamsCallback(p_aout, deviceId, false);
}
}
CFRelease(device_list_cpy);
CFRelease(p_sys->device_list);
char *psz_device = aout_DeviceGet(p_aout);
config_PutPsz("auhal-audio-device", psz_device);
free(psz_device);
free(p_sys);
}
static int Open(vlc_object_t *obj)
{
audio_output_t *p_aout = (audio_output_t *)obj;
aout_sys_t *p_sys = p_aout->sys = calloc(1, sizeof (*p_sys));
if (unlikely(p_sys == NULL))
return VLC_ENOMEM;
if (ca_Open(p_aout) != VLC_SUCCESS)
{
free(p_sys);
return VLC_EGENERIC;
}
vlc_mutex_init(&p_sys->device_list_lock);
vlc_mutex_init(&p_sys->selected_device_lock);
p_sys->b_digital = false;
p_sys->b_ignore_streams_changed_callback = false;
p_sys->b_selected_dev_is_default = false;
memset(&p_sys->sfmt_revert, 0, sizeof(p_sys->sfmt_revert));
p_sys->i_stream_id = 0;
p_aout->start = Start;
p_aout->stop = Stop;
p_aout->volume_set = VolumeSet;
p_aout->mute_set = MuteSet;
p_aout->device_select = SwitchAudioDevice;
p_sys->device_list = CFArrayCreate(kCFAllocatorDefault, NULL, 0, NULL);
/*
* Force an own run loop for callbacks.
*
* According to rtaudio, this is absolutely necessary since 10.6 to get
* correct notifications. It might fix issues when using the module as a
* library where a proper loop is not setup already.
*/
CFRunLoopRef theRunLoop = NULL;
AO_SETPROP(kAudioObjectSystemObject, sizeof(CFRunLoopRef),
&theRunLoop, kAudioHardwarePropertyRunLoop,
kAudioObjectPropertyScopeGlobal);
/* Attach a listener so that we are notified of a change in the device
* setup */
AO_UPDATELISTENER(kAudioObjectSystemObject, true, DevicesListener, p_aout,
kAudioHardwarePropertyDevices,
kAudioObjectPropertyScopeGlobal);
/* Attach a listener to be notified about changes in default audio device */
AO_UPDATELISTENER(kAudioObjectSystemObject, true,
DefaultDeviceChangedListener, p_aout,
kAudioHardwarePropertyDefaultOutputDevice,
kAudioObjectPropertyScopeGlobal);
char *psz_audio_device = var_InheritString(p_aout, "auhal-audio-device");
if (psz_audio_device != NULL)
{
int dev_id_int = atoi(psz_audio_device);
UInt32 dev_id = dev_id_int < 0 ? 0 : dev_id_int;
bool isDigital = (dev_id & AOUT_VAR_SPDIF_FLAG) != 0;
msg_Dbg(obj, "Trying to use stored audio device %d (%s)",
(dev_id & ~AOUT_VAR_SPDIF_FLAG), isDigital ? "digital" : "analog");
RebuildDeviceList(p_aout, &dev_id);
p_sys->i_new_selected_dev = dev_id;
free(psz_audio_device);
}
else
{
RebuildDeviceList(p_aout, NULL);
p_sys->i_new_selected_dev = 0;
}
char deviceid[10];
sprintf(deviceid, "%i", p_sys->i_new_selected_dev);
aout_DeviceReport(p_aout, deviceid);
/* remember the volume */
p_sys->f_volume = var_InheritInteger(p_aout, "auhal-volume")
/ (float)AOUT_VOLUME_DEFAULT;
aout_VolumeReport(p_aout, p_sys->f_volume);
p_sys->b_mute = var_InheritBool(p_aout, "mute");
aout_MuteReport(p_aout, p_sys->b_mute);
return VLC_SUCCESS;
}
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