--- /dev/null
+/* GStreamer
+ * Copyright (C) 2006 Thomas Vander Stichele <thomas at apestaart dot org>
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/**
+ * SECTION:element-gdppay
+ * @see_also: gdpdepay
+ *
+ * This element payloads GStreamer buffers and events using the
+ * GStreamer Data Protocol.
+ *
+ * <refsect2>
+ * |[
+ * gst-launch -v -m videotestsrc num-buffers=50 ! gdppay ! filesink location=test.gdp
+ * ]| This pipeline creates a serialized video stream that can be played back
+ * with the example shown in gdpdepay.
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/dataprotocol/dataprotocol.h>
+
+#include "gstgdppay.h"
+
+static GstStaticPadTemplate gdp_pay_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+static GstStaticPadTemplate gdp_pay_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("application/x-gdp"));
+
+GST_DEBUG_CATEGORY_STATIC (gst_gdp_pay_debug);
+#define GST_CAT_DEFAULT gst_gdp_pay_debug
+
+#define DEFAULT_CRC_HEADER TRUE
+#define DEFAULT_CRC_PAYLOAD FALSE
+#define DEFAULT_VERSION GST_DP_VERSION_1_0
+
+enum
+{
+ PROP_0,
+ PROP_CRC_HEADER,
+ PROP_CRC_PAYLOAD,
+ PROP_VERSION,
+};
+
+#define _do_init(x) \
+ GST_DEBUG_CATEGORY_INIT (gst_gdp_pay_debug, "gdppay", 0, \
+ "GDP payloader");
+
+GST_BOILERPLATE_FULL (GstGDPPay, gst_gdp_pay, GstElement,
+ GST_TYPE_ELEMENT, _do_init);
+
+static void gst_gdp_pay_reset (GstGDPPay * this);
+
+static GstFlowReturn gst_gdp_pay_chain (GstPad * pad, GstBuffer * buffer);
+
+static gboolean gst_gdp_pay_src_event (GstPad * pad, GstEvent * event);
+
+static gboolean gst_gdp_pay_sink_event (GstPad * pad, GstEvent * event);
+
+static GstStateChangeReturn gst_gdp_pay_change_state (GstElement *
+ element, GstStateChange transition);
+
+static void gst_gdp_pay_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_gdp_pay_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static void gst_gdp_pay_finalize (GObject * gobject);
+
+static void
+gst_gdp_pay_base_init (gpointer g_class)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_set_details_simple (element_class,
+ "GDP Payloader", "GDP/Payloader",
+ "Payloads GStreamer Data Protocol buffers",
+ "Thomas Vander Stichele <thomas at apestaart dot org>");
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gdp_pay_sink_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gdp_pay_src_template));
+}
+
+static void
+gst_gdp_pay_class_init (GstGDPPayClass * klass)
+{
+ GObjectClass *gobject_class;
+
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+
+ gobject_class->set_property = gst_gdp_pay_set_property;
+ gobject_class->get_property = gst_gdp_pay_get_property;
+ gobject_class->finalize = gst_gdp_pay_finalize;
+
+ g_object_class_install_property (gobject_class, PROP_CRC_HEADER,
+ g_param_spec_boolean ("crc-header", "CRC Header",
+ "Calculate and store a CRC checksum on the header",
+ DEFAULT_CRC_HEADER, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (gobject_class, PROP_CRC_PAYLOAD,
+ g_param_spec_boolean ("crc-payload", "CRC Payload",
+ "Calculate and store a CRC checksum on the payload",
+ DEFAULT_CRC_PAYLOAD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (gobject_class, PROP_VERSION,
+ g_param_spec_enum ("version", "Version",
+ "Version of the GStreamer Data Protocol",
+ GST_TYPE_DP_VERSION, DEFAULT_VERSION,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_gdp_pay_change_state);
+}
+
+static void
+gst_gdp_pay_init (GstGDPPay * gdppay, GstGDPPayClass * g_class)
+{
+ gdppay->sinkpad =
+ gst_pad_new_from_static_template (&gdp_pay_sink_template, "sink");
+ gst_pad_set_chain_function (gdppay->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_gdp_pay_chain));
+ gst_pad_set_event_function (gdppay->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_gdp_pay_sink_event));
+ gst_element_add_pad (GST_ELEMENT (gdppay), gdppay->sinkpad);
+
+ gdppay->srcpad =
+ gst_pad_new_from_static_template (&gdp_pay_src_template, "src");
+ gst_pad_set_event_function (gdppay->srcpad,
+ GST_DEBUG_FUNCPTR (gst_gdp_pay_src_event));
+ gst_element_add_pad (GST_ELEMENT (gdppay), gdppay->srcpad);
+
+ gdppay->crc_header = DEFAULT_CRC_HEADER;
+ gdppay->crc_payload = DEFAULT_CRC_PAYLOAD;
+ gdppay->header_flag = gdppay->crc_header | gdppay->crc_payload;
+ gdppay->version = DEFAULT_VERSION;
+ gdppay->offset = 0;
+
+ gdppay->packetizer = gst_dp_packetizer_new (gdppay->version);
+}
+
+static void
+gst_gdp_pay_finalize (GObject * gobject)
+{
+ GstGDPPay *this = GST_GDP_PAY (gobject);
+
+ gst_gdp_pay_reset (this);
+ gst_dp_packetizer_free (this->packetizer);
+
+ GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (gobject));
+}
+
+static void
+gst_gdp_pay_reset (GstGDPPay * this)
+{
+ GST_DEBUG_OBJECT (this, "Resetting GDP object");
+ /* clear the queued buffers */
+ while (this->queue) {
+ GstBuffer *buffer;
+
+ buffer = GST_BUFFER_CAST (this->queue->data);
+
+ /* delete buffer from queue now */
+ this->queue = g_list_delete_link (this->queue, this->queue);
+
+ gst_buffer_unref (buffer);
+ }
+ if (this->caps) {
+ gst_caps_unref (this->caps);
+ this->caps = NULL;
+ }
+ if (this->caps_buf) {
+ gst_buffer_unref (this->caps_buf);
+ this->caps_buf = NULL;
+ }
+ if (this->tag_buf) {
+ gst_buffer_unref (this->tag_buf);
+ this->tag_buf = NULL;
+ }
+ if (this->new_segment_buf) {
+ gst_buffer_unref (this->new_segment_buf);
+ this->new_segment_buf = NULL;
+ }
+ this->sent_streamheader = FALSE;
+ this->offset = 0;
+}
+
+/* set OFFSET and OFFSET_END with running count */
+static void
+gst_gdp_stamp_buffer (GstGDPPay * this, GstBuffer * buffer)
+{
+ GST_BUFFER_OFFSET (buffer) = this->offset;
+ GST_BUFFER_OFFSET_END (buffer) = this->offset + GST_BUFFER_SIZE (buffer);
+ this->offset = GST_BUFFER_OFFSET_END (buffer);
+}
+
+static GstBuffer *
+gst_gdp_buffer_from_caps (GstGDPPay * this, GstCaps * caps)
+{
+ GstBuffer *headerbuf;
+
+ GstBuffer *payloadbuf;
+
+ guint8 *header, *payload;
+
+ guint len;
+
+ if (!this->packetizer->packet_from_caps (caps, this->header_flag, &len,
+ &header, &payload))
+ goto packet_failed;
+
+ GST_LOG_OBJECT (this, "creating GDP header and payload buffer from caps");
+ headerbuf = gst_buffer_new ();
+ gst_buffer_set_data (headerbuf, header, len);
+ GST_BUFFER_MALLOCDATA (headerbuf) = header;
+
+ payloadbuf = gst_buffer_new ();
+ gst_buffer_set_data (payloadbuf, payload,
+ gst_dp_header_payload_length (header));
+ GST_BUFFER_MALLOCDATA (payloadbuf) = payload;
+
+ return gst_buffer_join (headerbuf, payloadbuf);
+
+ /* ERRORS */
+packet_failed:
+ {
+ GST_WARNING_OBJECT (this, "could not create GDP header from caps");
+ return NULL;
+ }
+}
+
+static GstBuffer *
+gst_gdp_pay_buffer_from_buffer (GstGDPPay * this, GstBuffer * buffer)
+{
+ GstBuffer *headerbuf;
+
+ guint8 *header;
+
+ guint len;
+
+ if (!this->packetizer->header_from_buffer (buffer, this->header_flag, &len,
+ &header))
+ goto no_buffer;
+
+ GST_LOG_OBJECT (this, "creating GDP header and payload buffer from buffer");
+ headerbuf = gst_buffer_new ();
+ gst_buffer_set_data (headerbuf, header, len);
+ GST_BUFFER_MALLOCDATA (headerbuf) = header;
+
+ /* we do not want to lose the ref on the incoming buffer */
+ gst_buffer_ref (buffer);
+
+ return gst_buffer_join (headerbuf, buffer);
+
+ /* ERRORS */
+no_buffer:
+ {
+ GST_WARNING_OBJECT (this, "could not create GDP header from buffer");
+ return NULL;
+ }
+}
+
+static GstBuffer *
+gst_gdp_buffer_from_event (GstGDPPay * this, GstEvent * event)
+{
+ GstBuffer *headerbuf;
+
+ GstBuffer *payloadbuf;
+
+ guint8 *header, *payload;
+
+ guint len;
+
+ gboolean ret;
+
+ ret =
+ this->packetizer->packet_from_event (event, this->header_flag, &len,
+ &header, &payload);
+ if (!ret)
+ goto no_event;
+
+ GST_LOG_OBJECT (this, "creating GDP header and payload buffer from event");
+ headerbuf = gst_buffer_new ();
+ gst_buffer_set_data (headerbuf, header, len);
+ GST_BUFFER_MALLOCDATA (headerbuf) = header;
+
+ payloadbuf = gst_buffer_new ();
+ gst_buffer_set_data (payloadbuf, payload,
+ gst_dp_header_payload_length (header));
+ GST_BUFFER_MALLOCDATA (payloadbuf) = payload;
+
+ return gst_buffer_join (headerbuf, payloadbuf);
+
+ /* ERRORS */
+no_event:
+ {
+ GST_WARNING_OBJECT (this, "could not create GDP header from event %s (%d)",
+ gst_event_type_get_name (event->type), event->type);
+ return NULL;
+ }
+}
+
+
+/* set our caps with streamheader, based on the latest newsegment and caps,
+ * and (possibly) GDP-serialized buffers of the streamheaders on the src pad */
+static GstFlowReturn
+gst_gdp_pay_reset_streamheader (GstGDPPay * this)
+{
+ GstCaps *caps;
+
+ /* We use copies of these to avoid circular refcounts */
+ GstBuffer *new_segment_buf, *caps_buf, *tag_buf;
+
+ GstStructure *structure;
+
+ GstFlowReturn r = GST_FLOW_OK;
+
+ gboolean version_one_zero = TRUE;
+
+ GValue array = { 0 };
+ GValue value = { 0 };
+
+ GST_DEBUG_OBJECT (this, "start");
+ /* In version 0.2, we didn't need or send new segment or tags */
+ if (this->version == GST_DP_VERSION_0_2)
+ version_one_zero = FALSE;
+
+ if (version_one_zero) {
+ if (!this->new_segment_buf || !this->caps_buf) {
+ GST_DEBUG_OBJECT (this, "1.0, missing new_segment or caps, returning");
+ return GST_FLOW_OK;
+ }
+ } else {
+ if (!this->caps_buf) {
+ GST_DEBUG_OBJECT (this, "0.2, missing caps, returning");
+ return GST_FLOW_OK;
+ }
+ }
+
+ /* put copies of the buffers in a fixed list
+ * Stamp the buffers with offset and offset_end as well.
+ * We do this here so the offsets match the order the buffers go out in */
+ g_value_init (&array, GST_TYPE_ARRAY);
+
+ if (version_one_zero) {
+ gst_gdp_stamp_buffer (this, this->new_segment_buf);
+ GST_DEBUG_OBJECT (this, "1.0, appending copy of new segment buffer %p",
+ this->new_segment_buf);
+ new_segment_buf = gst_buffer_copy (this->new_segment_buf);
+ gst_buffer_set_caps (new_segment_buf, NULL);
+ g_value_init (&value, GST_TYPE_BUFFER);
+ gst_value_set_buffer (&value, new_segment_buf);
+ gst_value_array_append_value (&array, &value);
+ g_value_unset (&value);
+ gst_buffer_unref (new_segment_buf);
+
+ if (this->tag_buf) {
+ gst_gdp_stamp_buffer (this, this->tag_buf);
+ GST_DEBUG_OBJECT (this, "1.0, appending current tags buffer %p",
+ this->tag_buf);
+ tag_buf = this->tag_buf;
+ this->tag_buf = NULL;
+
+ gst_buffer_set_caps (tag_buf, NULL);
+ g_value_init (&value, GST_TYPE_BUFFER);
+ gst_value_set_buffer (&value, tag_buf);
+ gst_value_array_append_value (&array, &value);
+ g_value_unset (&value);
+ gst_buffer_unref (tag_buf);
+ }
+ }
+
+ gst_gdp_stamp_buffer (this, this->caps_buf);
+ GST_DEBUG_OBJECT (this, "appending copy of caps buffer %p", this->caps_buf);
+ caps_buf = gst_buffer_copy (this->caps_buf);
+ gst_buffer_set_caps (caps_buf, NULL);
+ g_value_init (&value, GST_TYPE_BUFFER);
+ gst_value_set_buffer (&value, caps_buf);
+ gst_value_array_append_value (&array, &value);
+ g_value_unset (&value);
+ gst_buffer_unref (caps_buf);
+
+ /* we also need to add GDP serializations of the streamheaders of the
+ * incoming caps */
+ structure = gst_caps_get_structure (this->caps, 0);
+ if (gst_structure_has_field (structure, "streamheader")) {
+ const GValue *sh;
+
+ GArray *buffers;
+
+ GstBuffer *buffer;
+
+ int i;
+
+ sh = gst_structure_get_value (structure, "streamheader");
+ buffers = g_value_peek_pointer (sh);
+ GST_DEBUG_OBJECT (this,
+ "Need to serialize %d incoming streamheader buffers on ours",
+ buffers->len);
+ for (i = 0; i < buffers->len; ++i) {
+ GValue *bufval;
+
+ GstBuffer *outbuffer;
+
+ bufval = &g_array_index (buffers, GValue, i);
+ buffer = g_value_peek_pointer (bufval);
+ /* this buffer is deserialized by gdpdepay as a regular buffer,
+ it needs IN_CAPS, because it's a streamheader - otherwise it
+ is mixed with regular data buffers */
+ GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_IN_CAPS);
+ GST_BUFFER_OFFSET (buffer) = GST_BUFFER_OFFSET_NONE;
+ GST_BUFFER_OFFSET_END (buffer) = GST_BUFFER_OFFSET_NONE;
+ GST_BUFFER_TIMESTAMP (buffer) = GST_CLOCK_TIME_NONE;
+
+ outbuffer = gst_gdp_pay_buffer_from_buffer (this, buffer);
+ if (!outbuffer) {
+ g_value_unset (&array);
+ goto no_buffer;
+ }
+
+ /* Setting IN_CAPS as other GDP event buffers */
+ GST_DEBUG_OBJECT (this,
+ "Setting IN_CAPS flag on outgoing buffer %" GST_PTR_FORMAT,
+ outbuffer);
+ GST_BUFFER_FLAG_SET (outbuffer, GST_BUFFER_FLAG_IN_CAPS);
+ GST_BUFFER_OFFSET (outbuffer) = GST_BUFFER_OFFSET_NONE;
+ GST_BUFFER_OFFSET_END (outbuffer) = GST_BUFFER_OFFSET_NONE;
+ GST_BUFFER_TIMESTAMP (outbuffer) = GST_CLOCK_TIME_NONE;
+
+ g_value_init (&value, GST_TYPE_BUFFER);
+ gst_value_set_buffer (&value, outbuffer);
+ gst_value_array_append_value (&array, &value);
+ g_value_unset (&value);
+
+ gst_buffer_unref (outbuffer);
+ }
+ } else {
+ GST_DEBUG_OBJECT (this, "no streamheader to serialize");
+ }
+
+ GST_DEBUG_OBJECT (this, "%d serialized buffers on streamheaders",
+ gst_value_array_get_size (&array));
+ caps = gst_caps_from_string ("application/x-gdp");
+ structure = gst_caps_get_structure (caps, 0);
+
+ gst_structure_set_value (structure, "streamheader", &array);
+ g_value_unset (&array);
+
+ GST_DEBUG_OBJECT (this, "Setting caps on src pad %" GST_PTR_FORMAT, caps);
+ gst_pad_set_caps (this->srcpad, caps);
+ this->caps_buf = gst_buffer_make_metadata_writable (this->caps_buf);
+ gst_buffer_set_caps (this->caps_buf, caps);
+ this->new_segment_buf =
+ gst_buffer_make_metadata_writable (this->new_segment_buf);
+ gst_buffer_set_caps (this->new_segment_buf, caps);
+
+ /* if these are our first ever buffers, send out new_segment first */
+ if (!this->sent_streamheader) {
+ GstEvent *event =
+ gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_BYTES, 0, -1, 0);
+ GST_DEBUG_OBJECT (this, "Sending out new_segment event %p", event);
+ if (!gst_pad_push_event (this->srcpad, event)) {
+ GST_WARNING_OBJECT (this, "pushing new segment failed");
+ r = GST_FLOW_ERROR;
+ goto done;
+ }
+ }
+
+ /* push out these streamheader buffers, then flush our internal queue */
+ GST_DEBUG_OBJECT (this, "Pushing GDP new_segment buffer %p with offset %"
+ G_GINT64_FORMAT ", offset_end %" G_GINT64_FORMAT, this->new_segment_buf,
+ GST_BUFFER_OFFSET (this->new_segment_buf),
+ GST_BUFFER_OFFSET_END (this->new_segment_buf));
+ /* we stored these bufs with refcount 1, so make sure we keep a ref */
+ r = gst_pad_push (this->srcpad, gst_buffer_ref (this->new_segment_buf));
+ if (r != GST_FLOW_OK) {
+ GST_WARNING_OBJECT (this, "pushing GDP newsegment buffer returned %d", r);
+ goto done;
+ }
+ if (this->tag_buf) {
+ gst_buffer_set_caps (this->tag_buf, caps);
+ GST_DEBUG_OBJECT (this, "Pushing GDP tag buffer %p", this->tag_buf);
+ /* we stored these bufs with refcount 1, so make sure we keep a ref */
+ r = gst_pad_push (this->srcpad, gst_buffer_ref (this->tag_buf));
+ if (r != GST_FLOW_OK) {
+ GST_WARNING_OBJECT (this, "pushing GDP tag buffer returned %d", r);
+ goto done;
+ }
+ }
+ GST_DEBUG_OBJECT (this, "Pushing GDP caps buffer %p", this->caps_buf);
+ r = gst_pad_push (this->srcpad, gst_buffer_ref (this->caps_buf));
+ if (r != GST_FLOW_OK) {
+ GST_WARNING_OBJECT (this, "pushing GDP caps buffer returned %d", r);
+ goto done;
+ }
+ this->sent_streamheader = TRUE;
+ GST_DEBUG_OBJECT (this, "need to push %d queued buffers",
+ g_list_length (this->queue));
+ while (this->queue) {
+ GstBuffer *buffer;
+
+ buffer = GST_BUFFER_CAST (this->queue->data);
+ GST_DEBUG_OBJECT (this, "Pushing queued GDP buffer %p", buffer);
+
+ /* delete buffer from queue now */
+ this->queue = g_list_delete_link (this->queue, this->queue);
+
+ /* set caps and push */
+ gst_buffer_set_caps (buffer, caps);
+ r = gst_pad_push (this->srcpad, buffer);
+ if (r != GST_FLOW_OK) {
+ GST_WARNING_OBJECT (this, "pushing queued GDP buffer returned %d", r);
+ goto done;
+ }
+ }
+
+done:
+ gst_caps_unref (caps);
+ GST_DEBUG_OBJECT (this, "stop");
+ return r;
+
+ /* ERRORS */
+no_buffer:
+ {
+ GST_ELEMENT_ERROR (this, STREAM, FORMAT, (NULL),
+ ("failed to create GDP buffer from streamheader"));
+ return GST_FLOW_ERROR;
+ }
+}
+
+/* queue a buffer internally if we haven't sent streamheader buffers yet;
+ * otherwise, just push on, this takes ownership of the buffer. */
+static GstFlowReturn
+gst_gdp_queue_buffer (GstGDPPay * this, GstBuffer * buffer)
+{
+ if (this->sent_streamheader) {
+ GST_LOG_OBJECT (this, "Pushing GDP buffer %p, caps %" GST_PTR_FORMAT,
+ buffer, this->caps);
+ gst_buffer_set_caps (buffer, GST_PAD_CAPS (this->srcpad));
+ return gst_pad_push (this->srcpad, buffer);
+ }
+
+ /* store it on an internal queue. buffer remains reffed. */
+ this->queue = g_list_append (this->queue, buffer);
+ GST_DEBUG_OBJECT (this, "streamheader not sent yet, "
+ "queued buffer %p, now %d buffers queued",
+ buffer, g_list_length (this->queue));
+
+ return GST_FLOW_OK;
+}
+
+static GstFlowReturn
+gst_gdp_pay_chain (GstPad * pad, GstBuffer * buffer)
+{
+ GstGDPPay *this;
+
+ GstCaps *caps;
+
+ GstBuffer *outbuffer;
+
+ GstFlowReturn ret;
+
+ this = GST_GDP_PAY (gst_pad_get_parent (pad));
+
+ /* we should have received a new_segment before, otherwise it's a bug.
+ * fake one in that case */
+ if (!this->new_segment_buf) {
+ GstEvent *event;
+
+ GST_WARNING_OBJECT (this,
+ "did not receive new-segment before first buffer");
+ event = gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_BYTES, 0, -1, 0);
+ outbuffer = gst_gdp_buffer_from_event (this, event);
+ gst_event_unref (event);
+
+ /* GDP 0.2 doesn't know about new-segment, so this is not fatal */
+ if (!outbuffer) {
+ GST_ELEMENT_WARNING (this, STREAM, ENCODE, (NULL),
+ ("Could not create GDP buffer from new segment event"));
+ } else {
+ GST_BUFFER_TIMESTAMP (outbuffer) = GST_BUFFER_TIMESTAMP (buffer);
+ GST_BUFFER_DURATION (outbuffer) = 0;
+ GST_BUFFER_FLAG_SET (outbuffer, GST_BUFFER_FLAG_IN_CAPS);
+ GST_DEBUG_OBJECT (this, "Storing buffer %p as new_segment_buf",
+ outbuffer);
+ this->new_segment_buf = outbuffer;
+ }
+ }
+
+ /* make sure we've received caps before */
+ caps = gst_buffer_get_caps (buffer);
+ if (!this->caps && !caps)
+ goto no_caps;
+
+ /* if the caps have changed, process caps first */
+ if (caps && !gst_caps_is_equal (this->caps, caps)) {
+ GST_LOG_OBJECT (this, "caps changed to %p, %" GST_PTR_FORMAT, caps, caps);
+ gst_caps_replace (&(this->caps), caps);
+ outbuffer = gst_gdp_buffer_from_caps (this, caps);
+ if (!outbuffer)
+ goto no_caps_buffer;
+
+ GST_BUFFER_TIMESTAMP (outbuffer) = GST_BUFFER_TIMESTAMP (buffer);
+ GST_BUFFER_DURATION (outbuffer) = 0;
+ GST_BUFFER_FLAG_SET (outbuffer, GST_BUFFER_FLAG_IN_CAPS);
+
+ if (this->caps_buf)
+ gst_buffer_unref (this->caps_buf);
+ this->caps_buf = outbuffer;
+ gst_gdp_pay_reset_streamheader (this);
+ }
+
+ if (caps)
+ gst_caps_unref (caps);
+
+ /* create a GDP header packet,
+ * then create a GST buffer of the header packet and the buffer contents */
+ outbuffer = gst_gdp_pay_buffer_from_buffer (this, buffer);
+ if (!outbuffer)
+ goto no_buffer;
+
+ /* If the incoming buffer is IN_CAPS, that means we have it on the caps
+ * as streamheader, and we have serialized a GDP version of it and put it
+ * on our caps */
+ if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_IN_CAPS)) {
+ GST_DEBUG_OBJECT (this, "Setting IN_CAPS flag on outgoing buffer %p",
+ outbuffer);
+ GST_BUFFER_FLAG_SET (outbuffer, GST_BUFFER_FLAG_IN_CAPS);
+ }
+
+ gst_gdp_stamp_buffer (this, outbuffer);
+ GST_BUFFER_TIMESTAMP (outbuffer) = GST_BUFFER_TIMESTAMP (buffer);
+ GST_BUFFER_DURATION (outbuffer) = GST_BUFFER_DURATION (buffer);
+
+ ret = gst_gdp_queue_buffer (this, outbuffer);
+
+done:
+ gst_buffer_unref (buffer);
+ gst_object_unref (this);
+ return ret;
+
+ /* ERRORS */
+no_caps:
+ {
+ /* when returning a fatal error as a GstFlowReturn we must post an error
+ * message */
+ GST_ELEMENT_ERROR (this, STREAM, FORMAT, (NULL),
+ ("first received buffer does not have caps set"));
+ if (caps)
+ gst_caps_unref (caps);
+ ret = GST_FLOW_NOT_NEGOTIATED;
+ goto done;
+ }
+no_caps_buffer:
+ {
+ GST_ELEMENT_ERROR (this, STREAM, ENCODE, (NULL),
+ ("Could not create GDP buffer from caps %" GST_PTR_FORMAT, caps));
+ gst_caps_unref (caps);
+ ret = GST_FLOW_ERROR;
+ goto done;
+ }
+no_buffer:
+ {
+ GST_ELEMENT_ERROR (this, STREAM, ENCODE, (NULL),
+ ("Could not create GDP buffer from buffer"));
+ ret = GST_FLOW_ERROR;
+ goto done;
+ }
+}
+
+static gboolean
+gst_gdp_pay_sink_event (GstPad * pad, GstEvent * event)
+{
+ GstBuffer *outbuffer;
+
+ GstGDPPay *this = GST_GDP_PAY (gst_pad_get_parent (pad));
+
+ GstFlowReturn flowret;
+
+ gboolean ret = TRUE;
+
+ GST_DEBUG_OBJECT (this, "received event %p of type %s (%d)",
+ event, gst_event_type_get_name (event->type), event->type);
+
+ /* now turn the event into a buffer */
+ outbuffer = gst_gdp_buffer_from_event (this, event);
+ if (!outbuffer)
+ goto no_outbuffer;
+
+ GST_BUFFER_TIMESTAMP (outbuffer) = GST_EVENT_TIMESTAMP (event);
+ GST_BUFFER_DURATION (outbuffer) = 0;
+
+ /* if we got a new segment or tag event, we should put it on our streamheader,
+ * and not send it on */
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_NEWSEGMENT:
+ GST_DEBUG_OBJECT (this, "Storing in caps buffer %p as new_segment_buf",
+ outbuffer);
+
+ if (this->new_segment_buf)
+ gst_buffer_unref (this->new_segment_buf);
+ this->new_segment_buf = outbuffer;
+
+ GST_BUFFER_FLAG_SET (outbuffer, GST_BUFFER_FLAG_IN_CAPS);
+ gst_gdp_pay_reset_streamheader (this);
+ break;
+ case GST_EVENT_TAG:
+ GST_DEBUG_OBJECT (this, "Storing in caps buffer %p as tag_buf",
+ outbuffer);
+
+ if (this->tag_buf)
+ gst_buffer_unref (this->tag_buf);
+ this->tag_buf = outbuffer;
+
+ GST_BUFFER_FLAG_SET (outbuffer, GST_BUFFER_FLAG_IN_CAPS);
+ gst_gdp_pay_reset_streamheader (this);
+ break;
+ default:
+ GST_DEBUG_OBJECT (this, "queuing GDP buffer %p of event %p", outbuffer,
+ event);
+ flowret = gst_gdp_queue_buffer (this, outbuffer);
+ if (flowret != GST_FLOW_OK)
+ goto push_error;
+ break;
+ }
+
+ /* if we have EOS, we should send on EOS ourselves */
+ if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
+ GST_DEBUG_OBJECT (this, "Sending on EOS event %p", event);
+ /* ref, we unref later again */
+ ret = gst_pad_push_event (this->srcpad, gst_event_ref (event));
+ }
+
+done:
+ gst_event_unref (event);
+ gst_object_unref (this);
+
+ return ret;
+
+ /* ERRORS */
+no_outbuffer:
+ {
+ GST_ELEMENT_WARNING (this, STREAM, ENCODE, (NULL),
+ ("Could not create GDP buffer from received event (type %s)",
+ gst_event_type_get_name (event->type)));
+ ret = FALSE;
+ goto done;
+ }
+push_error:
+ {
+ GST_WARNING_OBJECT (this, "queueing GDP event buffer returned %d", flowret);
+ ret = FALSE;
+ goto done;
+ }
+}
+
+static gboolean
+gst_gdp_pay_src_event (GstPad * pad, GstEvent * event)
+{
+ GstGDPPay *this;
+
+ gboolean res = TRUE;
+
+ this = GST_GDP_PAY (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_SEEK:
+ /* we refuse seek for now. */
+ gst_event_unref (event);
+ res = FALSE;
+ break;
+ case GST_EVENT_QOS:
+ case GST_EVENT_NAVIGATION:
+ default:
+ /* everything else is passed */
+ res = gst_pad_push_event (this->sinkpad, event);
+ break;
+ }
+ gst_object_unref (this);
+
+ return res;
+}
+
+static void
+gst_gdp_pay_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstGDPPay *this;
+
+ g_return_if_fail (GST_IS_GDP_PAY (object));
+ this = GST_GDP_PAY (object);
+
+ switch (prop_id) {
+ case PROP_CRC_HEADER:
+ this->crc_header =
+ g_value_get_boolean (value) ? GST_DP_HEADER_FLAG_CRC_HEADER : 0;
+ this->header_flag = this->crc_header | this->crc_payload;
+ break;
+ case PROP_CRC_PAYLOAD:
+ this->crc_payload =
+ g_value_get_boolean (value) ? GST_DP_HEADER_FLAG_CRC_PAYLOAD : 0;
+ this->header_flag = this->crc_header | this->crc_payload;
+ break;
+ case PROP_VERSION:
+ this->version = g_value_get_enum (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_gdp_pay_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstGDPPay *this;
+
+ g_return_if_fail (GST_IS_GDP_PAY (object));
+ this = GST_GDP_PAY (object);
+
+ switch (prop_id) {
+ case PROP_CRC_HEADER:
+ g_value_set_boolean (value, this->crc_header);
+ break;
+ case PROP_CRC_PAYLOAD:
+ g_value_set_boolean (value, this->crc_payload);
+ break;
+ case PROP_VERSION:
+ g_value_set_enum (value, this->version);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static GstStateChangeReturn
+gst_gdp_pay_change_state (GstElement * element, GstStateChange transition)
+{
+ GstStateChangeReturn ret;
+
+ GstGDPPay *this = GST_GDP_PAY (element);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ break;
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ gst_gdp_pay_reset (this);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+gboolean
+gst_gdp_pay_plugin_init (GstPlugin * plugin)
+{
+ if (!gst_element_register (plugin, "gdppay", GST_RANK_NONE, GST_TYPE_GDP_PAY))
+ return FALSE;
+
+ return TRUE;
+}
projects / mafwsubrenderer / blobdiff