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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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381 lines
10 KiB
C
381 lines
10 KiB
C
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/* GStreamer
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* Copyright (C) 2016 Hyunjun Ko <zzoon@igalia.com>
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*
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* gstosxaudiodeviceprovider.c: OSX audio device probing and monitoring
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/audio/audio.h>
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#include "gstosxaudiosrc.h"
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#include "gstosxaudiosink.h"
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#include "gstosxaudiodeviceprovider.h"
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static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_OSX_AUDIO_SRC_CAPS)
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);
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static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_OSX_AUDIO_SINK_CAPS)
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);
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static GstOsxAudioDevice *gst_osx_audio_device_new (AudioDeviceID device_id,
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const gchar * device_name, GstOsxAudioDeviceType type,
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GstCoreAudio * core_audio);
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G_DEFINE_TYPE (GstOsxAudioDeviceProvider, gst_osx_audio_device_provider,
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GST_TYPE_DEVICE_PROVIDER);
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static GList *gst_osx_audio_device_provider_probe (GstDeviceProvider *
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provider);
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static void
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gst_osx_audio_device_provider_class_init (GstOsxAudioDeviceProviderClass *
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klass)
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{
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GstDeviceProviderClass *dm_class = GST_DEVICE_PROVIDER_CLASS (klass);
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dm_class->probe = gst_osx_audio_device_provider_probe;
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gst_device_provider_class_set_static_metadata (dm_class,
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"OSX Audio Device Provider", "Source/Sink/Audio",
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"List and monitor OSX audio source and sink devices",
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"Hyunjun Ko <zzoon@igalia.com>");
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}
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static void
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gst_osx_audio_device_provider_init (GstOsxAudioDeviceProvider * provider)
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{
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}
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static GstOsxAudioDevice *
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gst_osx_audio_device_provider_probe_device (GstOsxAudioDeviceProvider *
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provider, AudioDeviceID device_id, const gchar * device_name,
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GstOsxAudioDeviceType type)
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{
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GstOsxAudioDevice *device = NULL;
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GstCoreAudio *core_audio;
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core_audio = gst_core_audio_new (NULL);
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core_audio->is_src = type == GST_OSX_AUDIO_DEVICE_TYPE_SOURCE ? TRUE : FALSE;
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core_audio->device_id = device_id;
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if (!gst_core_audio_open (core_audio)) {
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GST_ERROR ("CoreAudio device could not be opened");
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goto done;
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}
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device = gst_osx_audio_device_new (device_id, device_name, type, core_audio);
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gst_core_audio_close (core_audio);
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done:
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g_object_unref (core_audio);
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return device;
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}
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static inline gchar *
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_audio_device_get_name (AudioDeviceID device_id, gboolean output)
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{
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OSStatus status = noErr;
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UInt32 propertySize = 0;
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gchar *device_name = NULL;
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AudioObjectPropertyScope prop_scope;
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AudioObjectPropertyAddress deviceNameAddress = {
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kAudioDevicePropertyDeviceName,
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kAudioDevicePropertyScopeOutput,
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kAudioObjectPropertyElementMaster
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};
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prop_scope = output ? kAudioDevicePropertyScopeOutput :
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kAudioDevicePropertyScopeInput;
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deviceNameAddress.mScope = prop_scope;
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/* Get the length of the device name */
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status = AudioObjectGetPropertyDataSize (device_id,
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&deviceNameAddress, 0, NULL, &propertySize);
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if (status != noErr) {
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goto beach;
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}
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/* Get the name of the device */
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device_name = (gchar *) g_malloc (propertySize);
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status = AudioObjectGetPropertyData (device_id,
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&deviceNameAddress, 0, NULL, &propertySize, device_name);
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if (status != noErr) {
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g_free (device_name);
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device_name = NULL;
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}
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beach:
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return device_name;
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}
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static inline gboolean
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_audio_device_has_output (AudioDeviceID device_id)
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{
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OSStatus status = noErr;
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UInt32 propertySize;
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AudioObjectPropertyAddress streamsAddress = {
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kAudioDevicePropertyStreams,
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kAudioDevicePropertyScopeOutput,
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kAudioObjectPropertyElementMaster
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};
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status = AudioObjectGetPropertyDataSize (device_id,
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&streamsAddress, 0, NULL, &propertySize);
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if (status != noErr) {
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return FALSE;
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}
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if (propertySize == 0) {
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return FALSE;
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}
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return TRUE;
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}
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static inline AudioDeviceID *
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_audio_system_get_devices (gint * ndevices)
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{
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OSStatus status = noErr;
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UInt32 propertySize = 0;
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AudioDeviceID *devices = NULL;
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AudioObjectPropertyAddress audioDevicesAddress = {
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kAudioHardwarePropertyDevices,
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kAudioObjectPropertyScopeGlobal,
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kAudioObjectPropertyElementMaster
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};
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status = AudioObjectGetPropertyDataSize (kAudioObjectSystemObject,
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&audioDevicesAddress, 0, NULL, &propertySize);
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if (status != noErr) {
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GST_WARNING ("failed getting number of devices: %d", (int) status);
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return NULL;
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}
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*ndevices = propertySize / sizeof (AudioDeviceID);
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devices = (AudioDeviceID *) g_malloc (propertySize);
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if (devices) {
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status = AudioObjectGetPropertyData (kAudioObjectSystemObject,
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&audioDevicesAddress, 0, NULL, &propertySize, devices);
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if (status != noErr) {
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GST_WARNING ("failed getting the list of devices: %d", (int) status);
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g_free (devices);
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*ndevices = 0;
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return NULL;
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}
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}
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return devices;
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}
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static GList *
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gst_osx_audio_device_provider_probe (GstDeviceProvider * provider)
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{
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GstOsxAudioDeviceProvider *self = GST_OSX_AUDIO_DEVICE_PROVIDER (provider);
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GList *devices = NULL;
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GstOsxAudioDevice *device = NULL;
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AudioDeviceID *osx_devices = NULL;
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gint i, ndevices = 0;
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osx_devices = _audio_system_get_devices (&ndevices);
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if (ndevices < 1) {
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GST_WARNING ("no audio output devices found");
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goto done;
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}
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GST_INFO ("found %d audio device(s)", ndevices);
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for (i = 0; i < ndevices; i++) {
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gchar *device_name;
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GstOsxAudioDeviceType type = GST_OSX_AUDIO_DEVICE_TYPE_INVALID;
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if ((device_name = _audio_device_get_name (osx_devices[i], FALSE))) {
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if (!_audio_device_has_output (osx_devices[i])) {
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GST_DEBUG ("Input Device ID: %u Name: %s",
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(unsigned) osx_devices[i], device_name);
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type = GST_OSX_AUDIO_DEVICE_TYPE_SOURCE;
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} else {
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GST_DEBUG ("Output Device ID: %u Name: %s",
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(unsigned) osx_devices[i], device_name);
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type = GST_OSX_AUDIO_DEVICE_TYPE_SINK;
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}
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device =
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gst_osx_audio_device_provider_probe_device (self, osx_devices[i],
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device_name, type);
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if (device) {
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gst_object_ref_sink (device);
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devices = g_list_prepend (devices, device);
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}
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g_free (device_name);
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}
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}
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done:
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g_free (osx_devices);
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return devices;
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}
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enum
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{
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PROP_DEVICE_ID = 1,
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};
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G_DEFINE_TYPE (GstOsxAudioDevice, gst_osx_audio_device, GST_TYPE_DEVICE);
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static void gst_osx_audio_device_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_osx_audio_device_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static GstElement *gst_osx_audio_device_create_element (GstDevice * device,
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const gchar * name);
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static void
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gst_osx_audio_device_class_init (GstOsxAudioDeviceClass * klass)
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{
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GstDeviceClass *dev_class = GST_DEVICE_CLASS (klass);
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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dev_class->create_element = gst_osx_audio_device_create_element;
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object_class->get_property = gst_osx_audio_device_get_property;
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object_class->set_property = gst_osx_audio_device_set_property;
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g_object_class_install_property (object_class, PROP_DEVICE_ID,
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g_param_spec_int ("device-id", "Device ID", "Device ID of input device",
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0, G_MAXINT, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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}
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static void
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gst_osx_audio_device_init (GstOsxAudioDevice * device)
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{
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}
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static GstElement *
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gst_osx_audio_device_create_element (GstDevice * device, const gchar * name)
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{
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GstOsxAudioDevice *osxdev = GST_OSX_AUDIO_DEVICE (device);
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GstElement *elem;
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elem = gst_element_factory_make (osxdev->element, name);
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g_object_set (elem, "device", osxdev->device_id, NULL);
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return elem;
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}
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static GstOsxAudioDevice *
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gst_osx_audio_device_new (AudioDeviceID device_id, const gchar * device_name,
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GstOsxAudioDeviceType type, GstCoreAudio * core_audio)
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{
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GstOsxAudioDevice *gstdev;
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const gchar *element_name = NULL;
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const gchar *klass = NULL;
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GstCaps *template_caps, *caps;
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g_return_val_if_fail (device_id > 0, NULL);
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g_return_val_if_fail (device_name, NULL);
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switch (type) {
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case GST_OSX_AUDIO_DEVICE_TYPE_SOURCE:
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element_name = "osxaudiosrc";
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klass = "Audio/Source";
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template_caps = gst_static_pad_template_get_caps (&src_factory);
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caps = gst_core_audio_probe_caps (core_audio, template_caps);
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gst_caps_unref (template_caps);
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break;
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case GST_OSX_AUDIO_DEVICE_TYPE_SINK:
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element_name = "osxaudiosink";
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klass = "Audio/Sink";
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template_caps = gst_static_pad_template_get_caps (&sink_factory);
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caps = gst_core_audio_probe_caps (core_audio, template_caps);
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gst_caps_unref (template_caps);
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break;
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default:
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g_assert_not_reached ();
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break;
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}
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gstdev = g_object_new (GST_TYPE_OSX_AUDIO_DEVICE, "device-id",
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device_id, "display-name", device_name, "caps", caps, "device-class",
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klass, NULL);
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gstdev->element = element_name;
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return gstdev;
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}
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static void
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gst_osx_audio_device_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstOsxAudioDevice *device;
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device = GST_OSX_AUDIO_DEVICE_CAST (object);
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switch (prop_id) {
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case PROP_DEVICE_ID:
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g_value_set_int (value, device->device_id);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_osx_audio_device_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstOsxAudioDevice *device;
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device = GST_OSX_AUDIO_DEVICE_CAST (object);
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switch (prop_id) {
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case PROP_DEVICE_ID:
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device->device_id = g_value_get_int (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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