mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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274 lines
7.6 KiB
C++
274 lines
7.6 KiB
C++
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/* GStreamer
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* Copyright (C) 2021 Seungha Yang <seungha@centricular.com>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, 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 "gstasiodeviceprovider.h"
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#include "gstasioutils.h"
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#include "gstasioobject.h"
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#include <atlconv.h>
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enum
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{
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PROP_0,
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PROP_DEVICE_CLSID,
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};
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struct _GstAsioDevice
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{
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GstDevice parent;
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gchar *device_clsid;
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const gchar *factory_name;
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};
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G_DEFINE_TYPE (GstAsioDevice, gst_asio_device, GST_TYPE_DEVICE);
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static void gst_asio_device_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static void gst_asio_device_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_asio_device_finalize (GObject * object);
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static GstElement *gst_asio_device_create_element (GstDevice * device,
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const gchar * name);
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static void
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gst_asio_device_class_init (GstAsioDeviceClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstDeviceClass *dev_class = GST_DEVICE_CLASS (klass);
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dev_class->create_element = gst_asio_device_create_element;
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gobject_class->get_property = gst_asio_device_get_property;
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gobject_class->set_property = gst_asio_device_set_property;
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gobject_class->finalize = gst_asio_device_finalize;
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g_object_class_install_property (gobject_class, PROP_DEVICE_CLSID,
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g_param_spec_string ("device-clsid", "Device CLSID",
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"ASIO device CLSID as string including curly brackets", NULL,
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(GParamFlags) (G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS)));
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}
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static void
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gst_asio_device_init (GstAsioDevice * self)
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{
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}
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static void
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gst_asio_device_finalize (GObject * object)
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{
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GstAsioDevice *self = GST_ASIO_DEVICE (object);
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g_free (self->device_clsid);
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G_OBJECT_CLASS (gst_asio_device_parent_class)->finalize (object);
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}
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static GstElement *
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gst_asio_device_create_element (GstDevice * device, const gchar * name)
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{
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GstAsioDevice *self = GST_ASIO_DEVICE (device);
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GstElement *elem;
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elem = gst_element_factory_make (self->factory_name, name);
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g_object_set (elem, "device-clsid", self->device_clsid, NULL);
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return elem;
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}
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static void
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gst_asio_device_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstAsioDevice *self = GST_ASIO_DEVICE (object);
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switch (prop_id) {
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case PROP_DEVICE_CLSID:
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g_value_set_string (value, self->device_clsid);
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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_asio_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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GstAsioDevice *self = GST_ASIO_DEVICE (object);
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switch (prop_id) {
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case PROP_DEVICE_CLSID:
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g_free (self->device_clsid);
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self->device_clsid = g_value_dup_string (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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struct _GstAsioDeviceProvider
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{
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GstDeviceProvider parent;
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};
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G_DEFINE_TYPE (GstAsioDeviceProvider, gst_asio_device_provider,
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GST_TYPE_DEVICE_PROVIDER);
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static GList *gst_asio_device_provider_probe (GstDeviceProvider * provider);
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static void
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gst_asio_device_provider_class_init (GstAsioDeviceProviderClass * klass)
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{
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GstDeviceProviderClass *provider_class = GST_DEVICE_PROVIDER_CLASS (klass);
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provider_class->probe = GST_DEBUG_FUNCPTR (gst_asio_device_provider_probe);
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gst_device_provider_class_set_static_metadata (provider_class,
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"ASIO Device Provider",
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"Source/Sink/Audio", "List ASIO source and sink devices",
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"Seungha Yang <seungha@centricular.com>");
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}
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static void
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gst_asio_device_provider_init (GstAsioDeviceProvider * provider)
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{
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}
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static void
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gst_asio_device_provider_probe_internal (GstAsioDeviceProvider * self,
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gboolean is_src, GList * asio_device_list, GList ** devices)
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{
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const gchar *device_class, *factory_name;
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GList *iter;
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USES_CONVERSION;
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if (is_src) {
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device_class = "Audio/Source";
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factory_name = "asiosrc";
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} else {
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device_class = "Audio/Sink";
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factory_name = "asiosink";
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}
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for (iter = asio_device_list; iter; iter = g_list_next (iter)) {
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GstDevice *device;
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GstAsioDeviceInfo *info = (GstAsioDeviceInfo *) iter->data;
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GstAsioObject *obj;
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GstCaps *caps = nullptr;
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GstStructure *props = nullptr;
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long max_in_ch = 0;
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long max_out_ch = 0;
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HRESULT hr;
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LPOLESTR clsid_str = nullptr;
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glong min_buf_size = 0;
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glong max_buf_size = 0;
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glong preferred_buf_size = 0;
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glong buf_size_granularity = 0;
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obj = gst_asio_object_new (info, FALSE);
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if (!obj)
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continue;
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if (!gst_asio_object_get_max_num_channels (obj, &max_in_ch, &max_out_ch))
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goto done;
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if (is_src && max_in_ch <= 0)
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goto done;
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else if (!is_src && max_out_ch <= 0)
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goto done;
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if (is_src) {
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caps = gst_asio_object_get_caps (obj,
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GST_ASIO_DEVICE_CLASS_CAPTURE, 1, max_in_ch);
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} else {
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caps = gst_asio_object_get_caps (obj,
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GST_ASIO_DEVICE_CLASS_RENDER, 1, max_out_ch);
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}
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if (!caps)
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goto done;
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hr = StringFromIID (info->clsid, &clsid_str);
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if (FAILED (hr))
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goto done;
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if (!gst_asio_object_get_buffer_size (obj, &min_buf_size, &max_buf_size,
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&preferred_buf_size, &buf_size_granularity))
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goto done;
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props = gst_structure_new ("asio-proplist",
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"device.api", G_TYPE_STRING, "asio",
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"device.clsid", G_TYPE_STRING, OLE2A (clsid_str),
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"asio.device.description", G_TYPE_STRING, info->driver_desc,
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"asio.device.min-buf-size", G_TYPE_LONG, min_buf_size,
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"asio.device.max-buf-size", G_TYPE_LONG, max_buf_size,
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"asio.device.preferred-buf-size", G_TYPE_LONG, preferred_buf_size,
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"asio.device.buf-size-granularity", G_TYPE_LONG, buf_size_granularity,
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nullptr);
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device = (GstDevice *) g_object_new (GST_TYPE_ASIO_DEVICE,
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"device-clsid", OLE2A (clsid_str),
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"display-name", info->driver_desc, "caps", caps,
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"device-class", device_class, "properties", props, nullptr);
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GST_ASIO_DEVICE (device)->factory_name = factory_name;
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*devices = g_list_append (*devices, device);
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done:
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gst_clear_caps (&caps);
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gst_clear_object (&obj);
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if (props)
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gst_structure_free (props);
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}
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return;
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}
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static GList *
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gst_asio_device_provider_probe (GstDeviceProvider * provider)
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{
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GstAsioDeviceProvider *self = GST_ASIO_DEVICE_PROVIDER (provider);
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GList *devices = nullptr;
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guint num_device;
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GList *asio_device_list = nullptr;
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num_device = gst_asio_enum (&asio_device_list);
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if (num_device == 0)
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return nullptr;
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gst_asio_device_provider_probe_internal (self,
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TRUE, asio_device_list, &devices);
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gst_asio_device_provider_probe_internal (self,
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FALSE, asio_device_list, &devices);
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g_list_free_full (asio_device_list,
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(GDestroyNotify) gst_asio_device_info_free);
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return devices;
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}
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