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https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-26 07:00:13 -05:00
Introduce the concept of a Node
Make an object for a processing node. Implement a sink node. Make it possible to implement Sink and Source interfaces to provide input/output from the node. Improve pinosdepay to track fds and handle format changes.
This commit is contained in:
Wim Taymans
parent
7597e48e02
commit
b885d40390
27 changed files with 3150 additions and 160 deletions
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@ -53,8 +53,13 @@
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GST_DEBUG_CATEGORY_STATIC (gst_pinos_depay_debug_category);
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#define GST_CAT_DEFAULT gst_pinos_depay_debug_category
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/* prototypes */
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static GQuark fdids_quark;
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enum
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{
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PROP_0,
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PROP_CAPS,
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};
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/* pad templates */
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static GstStaticPadTemplate gst_pinos_depay_src_template =
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@ -71,22 +76,97 @@ GST_STATIC_PAD_TEMPLATE ("sink",
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/* class initialization */
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G_DEFINE_TYPE (GstPinosDepay, gst_pinos_depay, GST_TYPE_ELEMENT);
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G_DEFINE_TYPE_WITH_CODE (GstPinosDepay, gst_pinos_depay, GST_TYPE_ELEMENT,
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GST_DEBUG_CATEGORY_INIT (gst_pinos_depay_debug_category, "pinosdepay", 0,
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"debug category for pinosdepay element"));
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static gboolean
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gst_pinos_depay_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
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{
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GstPinosDepay *depay = GST_PINOS_DEPAY (parent);
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gboolean res = FALSE;
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_SEGMENT:
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{
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GstSegment segment;
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gst_segment_init (&segment, GST_FORMAT_TIME);
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res = gst_pad_push_event (depay->srcpad, gst_event_new_segment (&segment));
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break;
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}
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case GST_EVENT_CAPS:
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{
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GstCaps *caps;
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GstStructure *str;
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gst_event_parse_caps (event, &caps);
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str = gst_caps_get_structure (caps, 0);
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depay->pinos_input = gst_structure_has_name (str, "application/x-pinos");
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gst_event_unref (event);
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res = gst_pad_push_event (depay->srcpad, gst_event_new_caps (depay->caps));
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break;
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}
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default:
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res = gst_pad_event_default (pad, parent, event);
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break;
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}
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return res;
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}
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static void
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release_fds (GstPinosDepay *this, GstBuffer *buffer)
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{
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GArray *fdids;
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guint i;
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PinosBufferBuilder b;
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PinosPacketReleaseFDPayload r;
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PinosBuffer pbuf;
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gsize size;
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gpointer data;
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GstBuffer *outbuf;
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GstEvent *ev;
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fdids = gst_mini_object_steal_qdata (GST_MINI_OBJECT_CAST (buffer),
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fdids_quark);
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if (fdids == NULL)
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return;
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pinos_buffer_builder_init (&b);
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for (i = 0; i < fdids->len; i++) {
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r.id = g_array_index (fdids, guint32, i);
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GST_LOG ("release fd index %d", r.id);
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pinos_buffer_builder_add_release_fd_payload (&b, &r);
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}
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pinos_buffer_builder_end (&b, &pbuf);
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g_array_unref (fdids);
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data = pinos_buffer_steal (&pbuf, &size, NULL);
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outbuf = gst_buffer_new_wrapped (data, size);
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ev = gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM,
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gst_structure_new ("GstNetworkMessage",
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"object", G_TYPE_OBJECT, this,
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"buffer", GST_TYPE_BUFFER, outbuf, NULL));
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gst_buffer_unref (outbuf);
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gst_pad_push_event (this->sinkpad, ev);
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g_object_unref (this);
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}
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static GstFlowReturn
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gst_pinos_depay_chain (GstPad *pad, GstObject * parent, GstBuffer * buffer)
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{
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GstPinosDepay *depay = GST_PINOS_DEPAY (parent);
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GstBuffer *outbuf;
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GstBuffer *outbuf = NULL;
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GstMapInfo info;
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PinosBuffer pbuf;
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PinosBufferIter it;
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GstNetControlMessageMeta * meta;
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GSocketControlMessage *msg = NULL;
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GError *err = NULL;
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GArray *fdids = NULL;
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meta = ((GstNetControlMessageMeta*) gst_buffer_get_meta (
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buffer, GST_NET_CONTROL_MESSAGE_META_API_TYPE));
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@ -96,13 +176,6 @@ gst_pinos_depay_chain (GstPad *pad, GstObject * parent, GstBuffer * buffer)
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meta = NULL;
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}
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if (msg == NULL) {
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gst_buffer_unref (buffer);
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return GST_FLOW_OK;
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}
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outbuf = gst_buffer_new ();
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gst_buffer_map (buffer, &info, GST_MAP_READ);
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pinos_buffer_init_data (&pbuf, info.data, info.size, msg);
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@ -113,9 +186,21 @@ gst_pinos_depay_chain (GstPad *pad, GstObject * parent, GstBuffer * buffer)
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{
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PinosPacketHeader hdr;
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if (!pinos_buffer_iter_parse_header (&it, &hdr))
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if (!pinos_buffer_iter_parse_header (&it, &hdr))
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goto error;
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if (outbuf == NULL)
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outbuf = gst_buffer_new ();
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GST_INFO ("pts %" G_GUINT64_FORMAT ", dts_offset %"G_GUINT64_FORMAT, hdr.pts, hdr.dts_offset);
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#if 0
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if (GST_CLOCK_TIME_IS_VALID (hdr.pts)) {
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GST_BUFFER_PTS (outbuf) = hdr.pts;
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if (GST_BUFFER_PTS (outbuf) + hdr.dts_offset > 0)
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GST_BUFFER_DTS (outbuf) = GST_BUFFER_PTS (outbuf) + hdr.dts_offset;
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}
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#endif
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GST_BUFFER_OFFSET (outbuf) = hdr.seq;
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break;
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}
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@ -131,10 +216,35 @@ gst_pinos_depay_chain (GstPad *pad, GstObject * parent, GstBuffer * buffer)
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if (fd == -1)
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goto error;
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if (outbuf == NULL)
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outbuf = gst_buffer_new ();
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fdmem = gst_fd_allocator_alloc (depay->fd_allocator, fd,
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p.offset + p.size, GST_FD_MEMORY_FLAG_NONE);
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gst_memory_resize (fdmem, p.offset, p.size);
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gst_buffer_append_memory (outbuf, fdmem);
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if (fdids == NULL)
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fdids = g_array_new (FALSE, FALSE, sizeof (guint32));
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GST_LOG ("track fd index %d", p.id);
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g_array_append_val (fdids, p.id);
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break;
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}
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case PINOS_PACKET_TYPE_FORMAT_CHANGE:
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{
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PinosPacketFormatChange change;
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GstCaps *caps;
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if (!pinos_buffer_iter_parse_format_change (&it, &change))
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goto error;
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GST_DEBUG ("got format change %d %s", change.id, change.format);
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caps = gst_caps_from_string (change.format);
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if (caps) {
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gst_caps_take (&depay->caps, caps);
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gst_pad_push_event (depay->srcpad, gst_event_new_caps (depay->caps));
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}
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break;
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}
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default:
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@ -145,7 +255,17 @@ gst_pinos_depay_chain (GstPad *pad, GstObject * parent, GstBuffer * buffer)
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gst_buffer_unmap (buffer, &info);
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gst_buffer_unref (buffer);
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return gst_pad_push (depay->srcpad, outbuf);
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if (outbuf) {
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if (fdids != NULL) {
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gst_mini_object_set_qdata (GST_MINI_OBJECT_CAST (outbuf),
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fdids_quark, fdids, NULL);
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gst_mini_object_weak_ref (GST_MINI_OBJECT_CAST (outbuf),
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(GstMiniObjectNotify) release_fds, g_object_ref (depay));
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}
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return gst_pad_push (depay->srcpad, outbuf);
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}
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else
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return GST_FLOW_OK;
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error:
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{
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@ -157,6 +277,45 @@ error:
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}
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}
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static void
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gst_pinos_depay_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstPinosDepay *depay = GST_PINOS_DEPAY (object);
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switch (prop_id) {
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case PROP_CAPS:
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{
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const GstCaps *caps;
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caps = gst_value_get_caps (value);
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gst_caps_replace (&depay->caps, (GstCaps *)caps);
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break;
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}
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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_pinos_depay_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstPinosDepay *depay = GST_PINOS_DEPAY (object);
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switch (prop_id) {
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case PROP_CAPS:
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gst_value_set_caps (value, depay->caps);
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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_pinos_depay_finalize (GObject * object)
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{
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@ -164,6 +323,7 @@ gst_pinos_depay_finalize (GObject * object)
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GST_DEBUG_OBJECT (depay, "finalize");
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gst_caps_replace (&depay->caps, NULL);
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g_object_unref (depay->fd_allocator);
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G_OBJECT_CLASS (gst_pinos_depay_parent_class)->finalize (object);
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@ -176,6 +336,15 @@ gst_pinos_depay_class_init (GstPinosDepayClass * klass)
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GstElementClass *element_class =
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GST_ELEMENT_CLASS (klass);
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gobject_class->finalize = gst_pinos_depay_finalize;
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gobject_class->set_property = gst_pinos_depay_set_property;
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gobject_class->get_property = gst_pinos_depay_get_property;
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g_object_class_install_property (gobject_class, PROP_CAPS,
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g_param_spec_boxed ("caps", "Caps",
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"The caps of the source pad", GST_TYPE_CAPS,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/* Setting up pads and setting metadata should be moved to
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base_class_init if you intend to subclass this class. */
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gst_element_class_add_pad_template (element_class,
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@ -188,7 +357,10 @@ gst_pinos_depay_class_init (GstPinosDepayClass * klass)
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"Pinos Depayloader for zero-copy IPC via Pinos",
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"Wim Taymans <wim.taymans@gmail.com>");
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gobject_class->finalize = gst_pinos_depay_finalize;
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GST_DEBUG_CATEGORY_INIT (gst_pinos_depay_debug_category, "pinosdepay", 0,
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"debug category for pinosdepay element");
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fdids_quark = g_quark_from_static_string ("GstPinosDepayFDIds");
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}
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static void
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@ -199,6 +371,7 @@ gst_pinos_depay_init (GstPinosDepay * depay)
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depay->sinkpad = gst_pad_new_from_static_template (&gst_pinos_depay_sink_template, "sink");
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gst_pad_set_chain_function (depay->sinkpad, gst_pinos_depay_chain);
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gst_pad_set_event_function (depay->sinkpad, gst_pinos_depay_sink_event);
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gst_element_add_pad (GST_ELEMENT (depay), depay->sinkpad);
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depay->fd_allocator = gst_fd_allocator_new ();
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