More hacking

Add spa based v4l2 pinos module
Add allocation params to port_alloc_buffers
Let the app do allocation for handles.

pinos/modules/spa/spa-alsa-sink.c

@@ -146,7 +146,7 @@ on_sink_event (SpaHandle *handle, SpaEvent *event, void *user_data)
       iinfo.event = oinfo.event;
 
       g_debug ("push sink %p", iinfo.buffer);
-      if ((res = priv->sink_node->push_port_input (priv->sink, 1, &iinfo)) < 0)
+      if ((res = priv->sink_node->port_push_input (priv->sink, 1, &iinfo)) < 0)
         g_debug ("got error %d", res);
       break;
     }
@@ -314,7 +314,7 @@ negotiate_formats (PinosSpaAlsaSink *this)
   uint32_t val;
   SpaPropValue value;
 
-  if ((res = priv->sink_node->enum_port_formats (priv->sink, 0, 0, &format)) < 0)
+  if ((res = priv->sink_node->port_enum_formats (priv->sink, 0, 0, &format)) < 0)
     return res;
 
   props = &format->props;
@@ -336,7 +336,7 @@ negotiate_formats (PinosSpaAlsaSink *this)
   if ((res = props->set_prop (props, spa_props_index_for_id (props, SPA_PROP_ID_AUDIO_CHANNELS), &value)) < 0)
     return res;
 
-  if ((res = priv->sink_node->set_port_format (priv->sink, 0, 0, format)) < 0)
+  if ((res = priv->sink_node->port_set_format (priv->sink, 0, 0, format)) < 0)
     return res;
 
   priv->ringbuffer = pinos_ringbuffer_new (PINOS_RINGBUFFER_MODE_READ, 64 * 1024);

pinos/modules/spa/spa-v4l2-source.c

@@ -0,0 +1,645 @@
+/* Pinos
+ * Copyright (C) 2015 Wim Taymans <wim.taymans@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#define _GNU_SOURCE
+
+#include <dlfcn.h>
+#include <errno.h>
+#include <poll.h>
+#include <string.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+#include <gio/gio.h>
+
+#include <spa/include/spa/node.h>
+#include <spa/include/spa/video/format.h>
+
+#include "spa-v4l2-source.h"
+
+#define PINOS_SPA_V4L2_SOURCE_GET_PRIVATE(obj)  \
+     (G_TYPE_INSTANCE_GET_PRIVATE ((obj), PINOS_TYPE_SPA_V4L2_SOURCE, PinosSpaV4l2SourcePrivate))
+
+typedef struct {
+  PinosSpaV4l2Source *source;
+
+  gboolean have_format;
+  PinosServerPort *port;
+} SourcePortData;
+
+struct _PinosSpaV4l2SourcePrivate
+{
+  SpaHandle *source;
+  const SpaNode *source_node;
+
+  SpaPollFd fds[16];
+  unsigned int n_fds;
+  SpaPollItem poll;
+
+  gboolean running;
+  pthread_t thread;
+
+  const void *format;
+
+  GList *ports;
+  PinosFdManager *fdmanager;
+};
+
+enum {
+  PROP_0,
+};
+
+G_DEFINE_TYPE (PinosSpaV4l2Source, pinos_spa_v4l2_source, PINOS_TYPE_SERVER_NODE);
+
+static SpaResult
+make_node (SpaHandle **handle, const SpaNode **node, const char *lib, const char *name)
+{
+  SpaResult res;
+  void *hnd;
+  SpaEnumHandleFactoryFunc enum_func;
+  unsigned int i;
+
+  if ((hnd = dlopen (lib, RTLD_NOW)) == NULL) {
+    g_error ("can't load %s: %s", lib, dlerror());
+    return SPA_RESULT_ERROR;
+  }
+  if ((enum_func = dlsym (hnd, "spa_enum_handle_factory")) == NULL) {
+    g_error ("can't find enum function");
+    return SPA_RESULT_ERROR;
+  }
+
+  for (i = 0; ;i++) {
+    const SpaHandleFactory *factory;
+    const void *iface;
+
+    if ((res = enum_func (i, &factory)) < 0) {
+      if (res != SPA_RESULT_ENUM_END)
+        g_error ("can't enumerate factories: %d", res);
+      break;
+    }
+    if (strcmp (factory->name, name))
+      continue;
+
+    if ((res = factory->instantiate (factory, handle)) < 0) {
+      g_error ("can't make factory instance: %d", res);
+      return res;
+    }
+    if ((res = (*handle)->get_interface (*handle, SPA_INTERFACE_ID_NODE, &iface)) < 0) {
+      g_error ("can't get interface %d", res);
+      return res;
+    }
+    *node = iface;
+    return SPA_RESULT_OK;
+  }
+  return SPA_RESULT_ERROR;
+}
+
+static void
+send_format (PinosSpaV4l2Source *source, SourcePortData *data)
+{
+  PinosSpaV4l2SourcePrivate *priv = source->priv;
+  GError *error = NULL;
+  PinosBufferBuilder builder;
+  PinosBuffer pbuf;
+  PinosPacketFormatChange fc;
+  guint8 buf[1024];
+
+  pinos_buffer_builder_init_into (&builder, buf, 1024, NULL, 0);
+  fc.id = 0;
+  fc.format = priv->format;
+  pinos_buffer_builder_add_format_change (&builder, &fc);
+  pinos_buffer_builder_end (&builder, &pbuf);
+
+  if (!pinos_port_send_buffer (PINOS_PORT (data->port), &pbuf, &error)) {
+    g_debug ("format update failed: %s", error->message);
+    g_clear_error (&error);
+  }
+  pinos_buffer_unref (&pbuf);
+
+  data->have_format = TRUE;
+}
+
+static int
+tmpfile_create (PinosSpaV4l2Source * source, void *data, gsize size)
+{
+  char filename[] = "/dev/shm/tmpfilepay.XXXXXX";
+  int fd, result;
+  void *p;
+
+  fd = mkostemp (filename, O_CLOEXEC);
+  if (fd == -1) {
+    g_debug ("Failed to create temporary file: %s", strerror (errno));
+    return -1;
+  }
+  unlink (filename);
+
+  result = ftruncate (fd, size);
+  if (result == -1) {
+    g_debug ("Failed to resize temporary file: %s", strerror (errno));
+    close (fd);
+    return -1;
+  }
+  p = mmap (0, size, PROT_WRITE, MAP_SHARED, fd, 0);
+  memcpy (p, data, size);
+  munmap (p, size);
+
+  return fd;
+}
+
+static void
+on_source_event (SpaHandle *handle, SpaEvent *event, void *user_data)
+{
+  PinosSpaV4l2Source *source = user_data;
+  PinosSpaV4l2SourcePrivate *priv = source->priv;
+
+  switch (event->type) {
+    case SPA_EVENT_TYPE_CAN_PULL_OUTPUT:
+    {
+      SpaOutputInfo info[1] = { 0, };
+      SpaResult res;
+      SpaBuffer *b;
+      PinosBuffer pbuf;
+      PinosBufferBuilder builder;
+      PinosPacketHeader hdr;
+      PinosPacketFDPayload p;
+      GList *walk;
+      gint fd;
+      guint8 buf[1024];
+      gint fdbuf[8];
+
+      if ((res = priv->source_node->port_pull_output (priv->source, 1, info)) < 0)
+        g_debug ("spa-v4l2-source %p: got pull error %d", source, res);
+
+      b = info[0].buffer;
+
+      hdr.flags = 0;
+      hdr.seq = 0;
+      hdr.pts = 0;
+      hdr.dts_offset = 0;
+
+      pinos_buffer_builder_init_into (&builder, buf, 1024, fdbuf, 8);
+      pinos_buffer_builder_add_header (&builder, &hdr);
+
+      fd = tmpfile_create (source, b->datas[0].data, b->size);
+      p.fd_index = pinos_buffer_builder_add_fd (&builder, fd);
+      p.id = pinos_fd_manager_get_id (priv->fdmanager);
+      p.offset = 0;
+      p.size = b->size;
+      pinos_buffer_builder_add_fd_payload (&builder, &p);
+      pinos_buffer_builder_end (&builder, &pbuf);
+
+      for (walk = priv->ports; walk; walk = g_list_next (walk)) {
+        SourcePortData *data = walk->data;
+        GError *error = NULL;
+
+        if (!data->have_format)
+          send_format (source, data);
+
+        if (!pinos_port_send_buffer (PINOS_PORT (data->port), &pbuf, &error)) {
+          g_debug ("send failed: %s", error->message);
+          g_clear_error (&error);
+        }
+      }
+      pinos_buffer_unref (&pbuf);
+
+      spa_buffer_unref (b);
+      break;
+    }
+
+    case SPA_EVENT_TYPE_ADD_POLL:
+    {
+      SpaPollItem *poll = event->data;
+
+      priv->poll = *poll;
+      priv->fds[0] = poll->fds[0];
+      priv->n_fds = 1;
+      priv->poll.fds = priv->fds;
+      break;
+    }
+    default:
+      g_debug ("got event %d", event->type);
+      break;
+  }
+}
+
+static void
+create_pipeline (PinosSpaV4l2Source *this)
+{
+  PinosSpaV4l2SourcePrivate *priv = this->priv;
+  SpaResult res;
+  SpaProps *props;
+  SpaPropValue value;
+
+  if ((res = make_node (&priv->source,
+                        &priv->source_node,
+                        "spa/build/plugins/v4l2/libspa-v4l2.so",
+                        "v4l2-source")) < 0) {
+    g_error ("can't create v4l2-source: %d", res);
+    return;
+  }
+  priv->source_node->set_event_callback (priv->source, on_source_event, this);
+
+  if ((res = priv->source_node->get_props (priv->source, &props)) < 0)
+    g_debug ("got get_props error %d", res);
+
+  value.type = SPA_PROP_TYPE_STRING;
+  value.value = "/dev/video1";
+  value.size = strlen (value.value)+1;
+  props->set_prop (props, spa_props_index_for_name (props, "device"), &value);
+
+  if ((res = priv->source_node->set_props (priv->source, props)) < 0)
+    g_debug ("got set_props error %d", res);
+}
+
+static SpaResult
+negotiate_formats (PinosSpaV4l2Source *this)
+{
+  PinosSpaV4l2SourcePrivate *priv = this->priv;
+  SpaResult res;
+  SpaFormat *format;
+  SpaProps *props;
+  uint32_t val;
+  SpaPropValue value;
+  SpaFraction frac;
+
+  if ((res = priv->source_node->port_enum_formats (priv->source, 0, 0, &format)) < 0)
+    return res;
+
+  props = &format->props;
+
+  value.type = SPA_PROP_TYPE_UINT32;
+  value.size = sizeof (uint32_t);
+  value.value = &val;
+
+  val = SPA_VIDEO_FORMAT_YUY2;
+  if ((res = props->set_prop (props, spa_props_index_for_id (props, SPA_PROP_ID_VIDEO_FORMAT), &value)) < 0)
+    return res;
+  val = 320;
+  if ((res = props->set_prop (props, spa_props_index_for_id (props, SPA_PROP_ID_VIDEO_WIDTH), &value)) < 0)
+    return res;
+  val = 240;
+  if ((res = props->set_prop (props, spa_props_index_for_id (props, SPA_PROP_ID_VIDEO_HEIGHT), &value)) < 0)
+    return res;
+
+  value.type = SPA_PROP_TYPE_FRACTION;
+  value.size = sizeof (SpaFraction);
+  value.value = &frac;
+
+  frac.num = 25;
+  frac.denom = 1;
+  if ((res = props->set_prop (props, spa_props_index_for_id (props, SPA_PROP_ID_VIDEO_FRAMERATE), &value)) < 0)
+    return res;
+
+  if ((res = priv->source_node->port_set_format (priv->source, 0, 0, format)) < 0)
+    return res;
+
+  priv->format = "video/x-raw,"
+                 " format=(string)YUY2,"
+                 " width=(int)320,"
+                 " height=(int)240,"
+                 " framerate=(fraction)30/1";
+
+  return SPA_RESULT_OK;
+}
+
+static void *
+loop (void *user_data)
+{
+  PinosSpaV4l2Source *this = user_data;
+  PinosSpaV4l2SourcePrivate *priv = this->priv;
+  int r;
+
+  g_debug ("spa-v4l2-source %p: enter thread", this);
+  while (priv->running) {
+    SpaPollNotifyData ndata;
+
+    r = poll ((struct pollfd *) priv->fds, priv->n_fds, -1);
+    if (r < 0) {
+      if (errno == EINTR)
+        continue;
+      break;
+    }
+    if (r == 0) {
+      g_debug ("spa-v4l2-source %p: select timeout", this);
+      break;
+    }
+    if (priv->poll.after_cb) {
+      ndata.fds = priv->poll.fds;
+      ndata.n_fds = priv->poll.n_fds;
+      ndata.user_data = priv->poll.user_data;
+      priv->poll.after_cb (&ndata);
+    }
+  }
+  g_debug ("spa-v4l2-source %p: leave thread", this);
+  return NULL;
+}
+
+static void
+start_pipeline (PinosSpaV4l2Source *source)
+{
+  PinosSpaV4l2SourcePrivate *priv = source->priv;
+  SpaResult res;
+  SpaCommand cmd;
+  int err;
+
+  g_debug ("spa-v4l2-source %p: starting pipeline", source);
+  negotiate_formats (source);
+
+  cmd.type = SPA_COMMAND_START;
+  if ((res = priv->source_node->send_command (priv->source, &cmd)) < 0)
+    g_debug ("got error %d", res);
+
+  priv->running = true;
+  if ((err = pthread_create (&priv->thread, NULL, loop, source)) != 0) {
+    g_debug ("spa-v4l2-source %p: can't create thread", strerror (err));
+    priv->running = false;
+  }
+}
+
+static void
+stop_pipeline (PinosSpaV4l2Source *source)
+{
+  PinosSpaV4l2SourcePrivate *priv = source->priv;
+  SpaResult res;
+  SpaCommand cmd;
+
+  g_debug ("spa-v4l2-source %p: stopping pipeline", source);
+
+  if (priv->running) {
+    priv->running = false;
+    pthread_join (priv->thread, NULL);
+  }
+
+  cmd.type = SPA_COMMAND_STOP;
+  if ((res = priv->source_node->send_command (priv->source, &cmd)) < 0)
+    g_debug ("got error %d", res);
+}
+
+static void
+destroy_pipeline (PinosSpaV4l2Source *source)
+{
+  g_debug ("spa-v4l2-source %p: destroy pipeline", source);
+}
+
+static gboolean
+set_state (PinosNode      *node,
+           PinosNodeState  state)
+{
+  PinosSpaV4l2Source *this = PINOS_SPA_V4L2_SOURCE (node);
+  PinosSpaV4l2SourcePrivate *priv = this->priv;
+
+  g_debug ("spa-source %p: set state %s", node, pinos_node_state_as_string (state));
+
+  switch (state) {
+    case PINOS_NODE_STATE_SUSPENDED:
+      break;
+
+    case PINOS_NODE_STATE_INITIALIZING:
+      break;
+
+    case PINOS_NODE_STATE_IDLE:
+      stop_pipeline (this);
+      break;
+
+    case PINOS_NODE_STATE_RUNNING:
+      start_pipeline (this);
+      break;
+
+    case PINOS_NODE_STATE_ERROR:
+      break;
+  }
+  pinos_node_update_state (node, state);
+  return TRUE;
+}
+
+static void
+get_property (GObject    *object,
+              guint       prop_id,
+              GValue     *value,
+              GParamSpec *pspec)
+{
+  PinosSpaV4l2Source *source = PINOS_SPA_V4L2_SOURCE (object);
+  PinosSpaV4l2SourcePrivate *priv = source->priv;
+
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+set_property (GObject      *object,
+              guint         prop_id,
+              const GValue *value,
+              GParamSpec   *pspec)
+{
+  PinosSpaV4l2Source *source = PINOS_SPA_V4L2_SOURCE (object);
+  PinosSpaV4l2SourcePrivate *priv = source->priv;
+
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static gboolean
+on_linked (PinosPort *port, PinosPort *peer, gpointer user_data)
+{
+  SourcePortData *data = user_data;
+  PinosSpaV4l2Source *source = data->source;
+  PinosSpaV4l2SourcePrivate *priv = source->priv;
+  guint n_links;
+
+  pinos_port_get_links (port, &n_links);
+  g_debug ("port %p: linked, now %d", port, n_links);
+  if (n_links == 0)
+    pinos_node_report_busy (PINOS_NODE (source));
+
+  return TRUE;
+}
+
+static void
+on_unlinked (PinosPort *port, PinosPort *peer, gpointer user_data)
+{
+  SourcePortData *data = user_data;
+  PinosSpaV4l2Source *source = data->source;
+  PinosSpaV4l2SourcePrivate *priv = source->priv;
+  guint n_links;
+
+  pinos_port_get_links (port, &n_links);
+  g_debug ("port %p: unlinked, now %d", port, n_links);
+  if (n_links == 1)
+    pinos_node_report_busy (PINOS_NODE (source));
+}
+
+static void
+on_received_buffer (PinosPort  *port,
+                    gpointer    user_data)
+{
+  PinosSpaV4l2Source *this = user_data;
+  PinosSpaV4l2SourcePrivate *priv = this->priv;
+  PinosBuffer *pbuf;
+  PinosBufferIter it;
+
+  pbuf = pinos_port_peek_buffer (port);
+
+  pinos_buffer_iter_init (&it, pbuf);
+  while (pinos_buffer_iter_next (&it)) {
+    switch (pinos_buffer_iter_get_type (&it)) {
+      default:
+        break;
+    }
+  }
+  pinos_buffer_iter_end (&it);
+}
+
+static void
+free_source_port_data (SourcePortData *data)
+{
+  PinosSpaV4l2Source *source = data->source;
+  PinosSpaV4l2SourcePrivate *priv = source->priv;
+
+  g_slice_free (SourcePortData, data);
+}
+
+static void
+remove_port (PinosNode       *node,
+             PinosPort       *port)
+{
+  PinosSpaV4l2Source *source = PINOS_SPA_V4L2_SOURCE (node);
+  PinosSpaV4l2SourcePrivate *priv = source->priv;
+  GList *walk;
+
+  for (walk = priv->ports; walk; walk = g_list_next (walk)) {
+    SourcePortData *data = walk->data;
+
+    if (data->port == PINOS_SERVER_PORT_CAST (port)) {
+      free_source_port_data (data);
+      priv->ports = g_list_delete_link (priv->ports, walk);
+      break;
+    }
+  }
+  if (priv->ports == NULL)
+    pinos_node_report_idle (node);
+}
+
+static void
+source_constructed (GObject * object)
+{
+  PinosSpaV4l2Source *source = PINOS_SPA_V4L2_SOURCE (object);
+  PinosSpaV4l2SourcePrivate *priv = source->priv;
+
+  G_OBJECT_CLASS (pinos_spa_v4l2_source_parent_class)->constructed (object);
+
+  create_pipeline (source);
+}
+
+static void
+source_finalize (GObject * object)
+{
+  PinosSpaV4l2Source *source = PINOS_SPA_V4L2_SOURCE (object);
+  PinosSpaV4l2SourcePrivate *priv = source->priv;
+
+  g_debug ("spa-source %p: dispose", source);
+  destroy_pipeline (source);
+
+  G_OBJECT_CLASS (pinos_spa_v4l2_source_parent_class)->finalize (object);
+}
+
+static PinosServerPort *
+create_port_sync (PinosServerNode *node,
+                  PinosDirection   direction,
+                  const gchar     *name,
+                  GBytes          *possible_formats,
+                  PinosProperties *props)
+{
+  PinosSpaV4l2Source *source = PINOS_SPA_V4L2_SOURCE (node);
+  PinosSpaV4l2SourcePrivate *priv = source->priv;
+  SourcePortData *data;
+
+  data = g_slice_new0 (SourcePortData);
+  data->source = source;
+  data->have_format = FALSE;
+
+  data->port = PINOS_SERVER_NODE_CLASS (pinos_spa_v4l2_source_parent_class)
+                ->create_port_sync (node,
+                                    direction,
+                                    name,
+                                    possible_formats,
+                                    props);
+
+  pinos_port_set_received_buffer_cb (PINOS_PORT (data->port), on_received_buffer, source, NULL);
+
+  g_debug ("connecting signals");
+  g_signal_connect (data->port, "linked", (GCallback) on_linked, data);
+  g_signal_connect (data->port, "unlinked", (GCallback) on_unlinked, data);
+
+  priv->ports = g_list_append (priv->ports, data);
+
+  return data->port;
+}
+
+static void
+pinos_spa_v4l2_source_class_init (PinosSpaV4l2SourceClass * klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  PinosNodeClass *node_class = PINOS_NODE_CLASS (klass);
+  PinosServerNodeClass *server_node_class = PINOS_SERVER_NODE_CLASS (klass);
+
+  g_type_class_add_private (klass, sizeof (PinosSpaV4l2SourcePrivate));
+
+  gobject_class->constructed = source_constructed;
+  gobject_class->finalize = source_finalize;
+  gobject_class->get_property = get_property;
+  gobject_class->set_property = set_property;
+
+  node_class->set_state = set_state;
+  node_class->remove_port = remove_port;
+
+  server_node_class->create_port_sync = create_port_sync;
+}
+
+static void
+pinos_spa_v4l2_source_init (PinosSpaV4l2Source * source)
+{
+  PinosSpaV4l2SourcePrivate *priv = source->priv = PINOS_SPA_V4L2_SOURCE_GET_PRIVATE (source);
+
+  priv->fdmanager = pinos_fd_manager_get (PINOS_FD_MANAGER_DEFAULT);
+
+}
+
+PinosServerNode *
+pinos_spa_v4l2_source_new (PinosDaemon *daemon,
+                           const gchar *name,
+                           PinosProperties *properties)
+{
+  PinosServerNode *node;
+
+  node = g_object_new (PINOS_TYPE_SPA_V4L2_SOURCE,
+                       "daemon", daemon,
+                       "name", name,
+                       "properties", properties,
+                       NULL);
+
+  return node;
+}

pinos/modules/spa/spa-v4l2-source.h

@@ -0,0 +1,61 @@
+/* Pinos
+ * Copyright (C) 2015 Wim Taymans <wim.taymans@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __PINOS_SPA_V4L2_SOURCE_H__
+#define __PINOS_SPA_V4L2_SOURCE_H__
+
+#include <glib-object.h>
+
+#include <client/pinos.h>
+#include <server/server-node.h>
+
+G_BEGIN_DECLS
+
+#define PINOS_TYPE_SPA_V4L2_SOURCE                 (pinos_spa_v4l2_source_get_type ())
+#define PINOS_IS_SPA_V4L2_SOURCE(obj)              (G_TYPE_CHECK_INSTANCE_TYPE ((obj), PINOS_TYPE_SPA_V4L2_SOURCE))
+#define PINOS_IS_SPA_V4L2_SOURCE_CLASS(klass)      (G_TYPE_CHECK_CLASS_TYPE ((klass), PINOS_TYPE_SPA_V4L2_SOURCE))
+#define PINOS_SPA_V4L2_SOURCE_GET_CLASS(obj)       (G_TYPE_INSTANCE_GET_CLASS ((obj), PINOS_TYPE_SPA_V4L2_SOURCE, PinosSpaV4l2SourceClass))
+#define PINOS_SPA_V4L2_SOURCE(obj)                 (G_TYPE_CHECK_INSTANCE_CAST ((obj), PINOS_TYPE_SPA_V4L2_SOURCE, PinosSpaV4l2Source))
+#define PINOS_SPA_V4L2_SOURCE_CLASS(klass)         (G_TYPE_CHECK_CLASS_CAST ((klass), PINOS_TYPE_SPA_V4L2_SOURCE, PinosSpaV4l2SourceClass))
+#define PINOS_SPA_V4L2_SOURCE_CAST(obj)            ((PinosSpaV4l2Source*)(obj))
+#define PINOS_SPA_V4L2_SOURCE_CLASS_CAST(klass)    ((PinosSpaV4l2SourceClass*)(klass))
+
+typedef struct _PinosSpaV4l2Source PinosSpaV4l2Source;
+typedef struct _PinosSpaV4l2SourceClass PinosSpaV4l2SourceClass;
+typedef struct _PinosSpaV4l2SourcePrivate PinosSpaV4l2SourcePrivate;
+
+struct _PinosSpaV4l2Source {
+  PinosServerNode object;
+
+  PinosSpaV4l2SourcePrivate *priv;
+};
+
+struct _PinosSpaV4l2SourceClass {
+  PinosServerNodeClass parent_class;
+};
+
+GType             pinos_spa_v4l2_source_get_type (void);
+
+PinosServerNode * pinos_spa_v4l2_source_new      (PinosDaemon     *daemon,
+                                                  const gchar     *name,
+                                                  PinosProperties *properties);
+
+G_END_DECLS
+
+#endif /* __PINOS_SPA_V4L2_SOURCE_H__ */