mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2025-02-09 07:52:36 +00:00
macos: Listen for audio devices being added/removed
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7258>
This commit is contained in:
Piotr Brzeziński
GStreamer Marge Bot
parent
14ca30a014
commit
2aa610605e
1 changed files with 187 additions and 1 deletions
|
|
@ -29,6 +29,9 @@
|
|||
#include "gstosxaudiosink.h"
|
||||
#include "gstosxaudiodeviceprovider.h"
|
||||
|
||||
GST_DEBUG_CATEGORY_STATIC (gst_osxaudio_device_debug);
|
||||
#define GST_CAT_DEFAULT gst_osxaudio_device_debug
|
||||
|
||||
#if defined(MAC_OS_X_VERSION_MAX_ALLOWED) && MAC_OS_X_VERSION_MAX_ALLOWED < 120000
|
||||
#define kAudioObjectPropertyElementMain kAudioObjectPropertyElementMaster
|
||||
#endif
|
||||
|
|
@ -55,8 +58,13 @@ GST_DEVICE_PROVIDER_REGISTER_DEFINE (osxaudiodeviceprovider,
|
|||
"osxaudiodeviceprovider", GST_RANK_PRIMARY,
|
||||
GST_TYPE_OSX_AUDIO_DEVICE_PROVIDER);
|
||||
|
||||
static gboolean gst_osx_audio_device_provider_start (GstDeviceProvider *
|
||||
provider);
|
||||
static void gst_osx_audio_device_provider_stop (GstDeviceProvider * provider);
|
||||
static GList *gst_osx_audio_device_provider_probe (GstDeviceProvider *
|
||||
provider);
|
||||
static void
|
||||
gst_osx_audio_device_provider_update_devices (GstOsxAudioDeviceProvider * self);
|
||||
|
||||
static void
|
||||
gst_osx_audio_device_provider_class_init (GstOsxAudioDeviceProviderClass *
|
||||
|
|
@ -64,12 +72,17 @@ gst_osx_audio_device_provider_class_init (GstOsxAudioDeviceProviderClass *
|
|||
{
|
||||
GstDeviceProviderClass *dm_class = GST_DEVICE_PROVIDER_CLASS (klass);
|
||||
|
||||
dm_class->start = gst_osx_audio_device_provider_start;
|
||||
dm_class->stop = gst_osx_audio_device_provider_stop;
|
||||
dm_class->probe = gst_osx_audio_device_provider_probe;
|
||||
|
||||
gst_device_provider_class_set_static_metadata (dm_class,
|
||||
"OSX Audio Device Provider", "Source/Sink/Audio",
|
||||
"List and monitor OSX audio source and sink devices",
|
||||
"Hyunjun Ko <zzoon@igalia.com>");
|
||||
|
||||
GST_DEBUG_CATEGORY_INIT (gst_osxaudio_device_debug, "osxaudio_device", 0,
|
||||
"Audio device provider for macOS");
|
||||
}
|
||||
|
||||
static void
|
||||
|
|
@ -234,12 +247,69 @@ _audio_system_get_devices (gint * ndevices)
|
|||
return devices;
|
||||
}
|
||||
|
||||
static OSStatus
|
||||
_audio_devices_changed_cb (AudioObjectID inObjectID, UInt32 inNumberAddresses,
|
||||
const AudioObjectPropertyAddress * inAddresses,
|
||||
void *__nullable inClientData)
|
||||
{
|
||||
GstOsxAudioDeviceProvider *self =
|
||||
GST_OSX_AUDIO_DEVICE_PROVIDER (inClientData);
|
||||
|
||||
GST_DEBUG ("Audio devices changed");
|
||||
gst_osx_audio_device_provider_update_devices (self);
|
||||
|
||||
return noErr;
|
||||
}
|
||||
|
||||
static AudioObjectPropertyAddress
|
||||
_get_devices_list_address ()
|
||||
{
|
||||
AudioObjectPropertyAddress address = {
|
||||
.mSelector = kAudioHardwarePropertyDevices,
|
||||
.mScope = kAudioObjectPropertyScopeGlobal,
|
||||
.mElement = kAudioObjectPropertyElementMain
|
||||
};
|
||||
|
||||
return address;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
_start_audio_device_watcher (GstOsxAudioDeviceProvider * self)
|
||||
{
|
||||
AudioObjectPropertyAddress propertyAddress = _get_devices_list_address ();
|
||||
OSStatus result = AudioObjectAddPropertyListener (kAudioObjectSystemObject,
|
||||
&propertyAddress, _audio_devices_changed_cb, self);
|
||||
|
||||
if (result != noErr) {
|
||||
GST_WARNING ("Failed to add device list change listener: %d", result);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
GST_DEBUG ("Audio device watcher started");
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
_stop_audio_device_watcher (GstOsxAudioDeviceProvider * self)
|
||||
{
|
||||
AudioObjectPropertyAddress propertyAddress = _get_devices_list_address ();
|
||||
OSStatus result = AudioObjectRemovePropertyListener (kAudioObjectSystemObject,
|
||||
&propertyAddress, _audio_devices_changed_cb, self);
|
||||
|
||||
if (result != noErr) {
|
||||
GST_WARNING ("Failed to remove device list change listener: %d", result);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
GST_DEBUG ("Audio device watcher stopped");
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_osx_audio_device_provider_probe_internal (GstOsxAudioDeviceProvider * self,
|
||||
gboolean is_src, AudioDeviceID * osx_devices, gint ndevices,
|
||||
GList ** devices)
|
||||
{
|
||||
|
||||
gint i = 0;
|
||||
GstOsxAudioDeviceType type = GST_OSX_AUDIO_DEVICE_TYPE_INVALID;
|
||||
GstOsxAudioDevice *device = NULL;
|
||||
|
|
@ -312,6 +382,122 @@ done:
|
|||
return devices;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_osx_audio_device_provider_start (GstDeviceProvider * provider)
|
||||
{
|
||||
GstOsxAudioDeviceProvider *self = GST_OSX_AUDIO_DEVICE_PROVIDER (provider);
|
||||
GList *devices = NULL;
|
||||
GList *iter;
|
||||
|
||||
devices = gst_osx_audio_device_provider_probe (provider);
|
||||
if (devices) {
|
||||
for (iter = devices; iter; iter = g_list_next (iter)) {
|
||||
gst_device_provider_device_add (provider, GST_DEVICE (iter->data));
|
||||
}
|
||||
|
||||
g_list_free (devices);
|
||||
}
|
||||
|
||||
return _start_audio_device_watcher (self);
|
||||
}
|
||||
|
||||
static void
|
||||
gst_osx_audio_device_provider_stop (GstDeviceProvider * provider)
|
||||
{
|
||||
GstOsxAudioDeviceProvider *self = GST_OSX_AUDIO_DEVICE_PROVIDER (provider);
|
||||
_stop_audio_device_watcher (self);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_osx_audio_device_is_in_list (GList * list, GstDevice * gst_device)
|
||||
{
|
||||
GstOsxAudioDevice *osx_device = GST_OSX_AUDIO_DEVICE (gst_device);
|
||||
gchar *name = gst_device_get_display_name (gst_device);
|
||||
GList *iter;
|
||||
gboolean found = FALSE;
|
||||
|
||||
for (iter = list; iter; iter = g_list_next (iter)) {
|
||||
GstOsxAudioDevice *other_osx = GST_OSX_AUDIO_DEVICE (iter->data);
|
||||
gchar *other_name = gst_device_get_display_name (GST_DEVICE (iter->data));
|
||||
|
||||
/* Only checking ID + class for now.
|
||||
* Should be enough to pick up changes when an existing output device
|
||||
* adds an input or vice versa */
|
||||
if (g_ascii_strcasecmp (name, other_name) == 0
|
||||
&& osx_device->device_id == other_osx->device_id) {
|
||||
found = TRUE;
|
||||
}
|
||||
|
||||
g_free (other_name);
|
||||
|
||||
if (found)
|
||||
break;
|
||||
}
|
||||
|
||||
g_free (name);
|
||||
return found;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_osx_audio_device_provider_update_devices (GstOsxAudioDeviceProvider * self)
|
||||
{
|
||||
GstDeviceProvider *provider = GST_DEVICE_PROVIDER_CAST (self);
|
||||
GList *prev_devices = NULL;
|
||||
GList *new_devices = NULL;
|
||||
GList *to_add = NULL;
|
||||
GList *to_remove = NULL;
|
||||
GList *iter;
|
||||
|
||||
GST_OBJECT_LOCK (self);
|
||||
prev_devices = g_list_copy_deep (provider->devices,
|
||||
(GCopyFunc) gst_object_ref, NULL);
|
||||
GST_OBJECT_UNLOCK (self);
|
||||
|
||||
new_devices = gst_osx_audio_device_provider_probe (provider);
|
||||
if (!new_devices)
|
||||
goto done;
|
||||
|
||||
/* Ownership of GstDevice for gst_device_provider_device_add()
|
||||
* and gst_device_provider_device_remove() is a bit complicated.
|
||||
* Remove floating reference here for things to be clear */
|
||||
for (iter = new_devices; iter; iter = g_list_next (iter))
|
||||
gst_object_ref_sink (iter->data);
|
||||
|
||||
/* Check added devices */
|
||||
for (iter = new_devices; iter; iter = g_list_next (iter)) {
|
||||
if (!gst_osx_audio_device_is_in_list
|
||||
(prev_devices, GST_DEVICE (iter->data))) {
|
||||
to_add = g_list_prepend (to_add, gst_object_ref (iter->data));
|
||||
}
|
||||
}
|
||||
|
||||
/* Check removed devices */
|
||||
for (iter = prev_devices; iter; iter = g_list_next (iter)) {
|
||||
if (!gst_osx_audio_device_is_in_list (new_devices, GST_DEVICE (iter->data))) {
|
||||
to_remove = g_list_prepend (to_remove, gst_object_ref (iter->data));
|
||||
}
|
||||
}
|
||||
|
||||
for (iter = to_remove; iter; iter = g_list_next (iter))
|
||||
gst_device_provider_device_remove (provider, GST_DEVICE (iter->data));
|
||||
|
||||
for (iter = to_add; iter; iter = g_list_next (iter))
|
||||
gst_device_provider_device_add (provider, GST_DEVICE (iter->data));
|
||||
|
||||
done:
|
||||
if (prev_devices)
|
||||
g_list_free_full (prev_devices, (GDestroyNotify) gst_object_unref);
|
||||
|
||||
if (to_add)
|
||||
g_list_free_full (to_add, (GDestroyNotify) gst_object_unref);
|
||||
|
||||
if (to_remove)
|
||||
g_list_free_full (to_remove, (GDestroyNotify) gst_object_unref);
|
||||
|
||||
if (new_devices)
|
||||
g_list_free (new_devices);
|
||||
}
|
||||
|
||||
enum
|
||||
{
|
||||
PROP_DEVICE_ID = 1,
|
||||
|
|
|
|||
Loading…
Reference in a new issue