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* stream-start-id is mandatory at the beginning, so add that to the gdp headers * caps must be sent before new segment, invert the order from legacy 0.10 code And fix the tests as a ref is now kept for those buffers that compose the header
901 lines
27 KiB
C
901 lines
27 KiB
C
/* GStreamer
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* Copyright (C) 2006 Thomas Vander Stichele <thomas at apestaart dot org>
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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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/**
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* SECTION:element-gdppay
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* @see_also: gdpdepay
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*
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* This element payloads GStreamer buffers and events using the
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* GStreamer Data Protocol.
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*
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* <refsect2>
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* |[
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* gst-launch -v -m videotestsrc num-buffers=50 ! gdppay ! filesink location=test.gdp
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* ]| This pipeline creates a serialized video stream that can be played back
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* with the example shown in gdpdepay.
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* </refsect2>
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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 "dataprotocol.h"
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#include "gstgdppay.h"
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static GstStaticPadTemplate gdp_pay_sink_template =
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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_ANY);
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static GstStaticPadTemplate gdp_pay_src_template =
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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 ("application/x-gdp"));
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GST_DEBUG_CATEGORY_STATIC (gst_gdp_pay_debug);
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#define GST_CAT_DEFAULT gst_gdp_pay_debug
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#define DEFAULT_CRC_HEADER TRUE
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#define DEFAULT_CRC_PAYLOAD FALSE
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#define DEFAULT_VERSION GST_DP_VERSION_1_0
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enum
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{
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PROP_0,
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PROP_CRC_HEADER,
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PROP_CRC_PAYLOAD,
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PROP_VERSION,
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};
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#define _do_init \
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GST_DEBUG_CATEGORY_INIT (gst_gdp_pay_debug, "gdppay", 0, \
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"GDP payloader");
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#define gst_gdp_pay_parent_class parent_class
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G_DEFINE_TYPE_WITH_CODE (GstGDPPay, gst_gdp_pay, GST_TYPE_ELEMENT, _do_init);
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static void gst_gdp_pay_reset (GstGDPPay * this);
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static GstFlowReturn gst_gdp_pay_chain (GstPad * pad, GstObject * parent,
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GstBuffer * buffer);
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static gboolean gst_gdp_pay_src_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean gst_gdp_pay_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static GstStateChangeReturn gst_gdp_pay_change_state (GstElement *
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element, GstStateChange transition);
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static void gst_gdp_pay_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_gdp_pay_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_gdp_pay_finalize (GObject * gobject);
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static void
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gst_gdp_pay_class_init (GstGDPPayClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gobject_class->set_property = gst_gdp_pay_set_property;
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gobject_class->get_property = gst_gdp_pay_get_property;
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gobject_class->finalize = gst_gdp_pay_finalize;
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g_object_class_install_property (gobject_class, PROP_CRC_HEADER,
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g_param_spec_boolean ("crc-header", "CRC Header",
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"Calculate and store a CRC checksum on the header",
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DEFAULT_CRC_HEADER, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_CRC_PAYLOAD,
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g_param_spec_boolean ("crc-payload", "CRC Payload",
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"Calculate and store a CRC checksum on the payload",
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DEFAULT_CRC_PAYLOAD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_VERSION,
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g_param_spec_enum ("version", "Version",
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"Version of the GStreamer Data Protocol",
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GST_TYPE_DP_VERSION, DEFAULT_VERSION,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_set_static_metadata (gstelement_class,
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"GDP Payloader", "GDP/Payloader",
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"Payloads GStreamer Data Protocol buffers",
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"Thomas Vander Stichele <thomas at apestaart dot org>");
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&gdp_pay_sink_template));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&gdp_pay_src_template));
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gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_gdp_pay_change_state);
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}
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static void
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gst_gdp_pay_init (GstGDPPay * gdppay)
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{
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gdppay->sinkpad =
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gst_pad_new_from_static_template (&gdp_pay_sink_template, "sink");
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gst_pad_set_chain_function (gdppay->sinkpad,
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GST_DEBUG_FUNCPTR (gst_gdp_pay_chain));
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gst_pad_set_event_function (gdppay->sinkpad,
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GST_DEBUG_FUNCPTR (gst_gdp_pay_sink_event));
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gst_element_add_pad (GST_ELEMENT (gdppay), gdppay->sinkpad);
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gdppay->srcpad =
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gst_pad_new_from_static_template (&gdp_pay_src_template, "src");
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gst_pad_set_event_function (gdppay->srcpad,
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GST_DEBUG_FUNCPTR (gst_gdp_pay_src_event));
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gst_element_add_pad (GST_ELEMENT (gdppay), gdppay->srcpad);
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gdppay->crc_header = DEFAULT_CRC_HEADER;
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gdppay->crc_payload = DEFAULT_CRC_PAYLOAD;
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gdppay->header_flag = gdppay->crc_header | gdppay->crc_payload;
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gdppay->version = DEFAULT_VERSION;
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gdppay->offset = 0;
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gdppay->packetizer = gst_dp_packetizer_new (gdppay->version);
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}
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static void
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gst_gdp_pay_finalize (GObject * gobject)
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{
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GstGDPPay *this = GST_GDP_PAY (gobject);
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gst_gdp_pay_reset (this);
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gst_dp_packetizer_free (this->packetizer);
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GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (gobject));
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}
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static void
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gst_gdp_pay_reset (GstGDPPay * this)
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{
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GST_DEBUG_OBJECT (this, "Resetting GDP object");
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/* clear the queued buffers */
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while (this->queue) {
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GstBuffer *buffer;
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buffer = GST_BUFFER_CAST (this->queue->data);
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/* delete buffer from queue now */
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this->queue = g_list_delete_link (this->queue, this->queue);
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gst_buffer_unref (buffer);
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}
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if (this->caps) {
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gst_caps_unref (this->caps);
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this->caps = NULL;
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}
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if (this->caps_buf) {
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gst_buffer_unref (this->caps_buf);
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this->caps_buf = NULL;
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}
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if (this->tag_buf) {
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gst_buffer_unref (this->tag_buf);
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this->tag_buf = NULL;
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}
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if (this->new_segment_buf) {
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gst_buffer_unref (this->new_segment_buf);
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this->new_segment_buf = NULL;
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}
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if (this->streamstartid_buf) {
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gst_buffer_unref (this->streamstartid_buf);
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this->streamstartid_buf = NULL;
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}
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this->sent_streamheader = FALSE;
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this->offset = 0;
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}
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/* set OFFSET and OFFSET_END with running count */
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static void
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gst_gdp_stamp_buffer (GstGDPPay * this, GstBuffer * buffer)
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{
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GST_BUFFER_OFFSET (buffer) = this->offset;
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GST_BUFFER_OFFSET_END (buffer) = this->offset + gst_buffer_get_size (buffer);
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this->offset = GST_BUFFER_OFFSET_END (buffer);
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}
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static GstBuffer *
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gst_gdp_buffer_from_caps (GstGDPPay * this, GstCaps * caps)
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{
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GstBuffer *headerbuf;
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GstBuffer *payloadbuf;
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guint8 *header, *payload;
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guint len, plen;
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if (!this->packetizer->packet_from_caps (caps, this->header_flag, &len,
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&header, &payload))
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goto packet_failed;
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GST_LOG_OBJECT (this, "creating GDP header and payload buffer from caps");
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headerbuf = gst_buffer_new_wrapped (header, len);
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plen = gst_dp_header_payload_length (header);
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payloadbuf = gst_buffer_new_wrapped (payload, plen);
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return gst_buffer_append (headerbuf, payloadbuf);
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/* ERRORS */
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packet_failed:
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{
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GST_WARNING_OBJECT (this, "could not create GDP header from caps");
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return NULL;
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}
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}
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static GstBuffer *
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gst_gdp_pay_buffer_from_buffer (GstGDPPay * this, GstBuffer * buffer)
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{
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GstBuffer *headerbuf;
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guint8 *header;
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guint len;
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if (!this->packetizer->header_from_buffer (buffer, this->header_flag, &len,
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&header))
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goto no_buffer;
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GST_LOG_OBJECT (this, "creating GDP header and payload buffer from buffer");
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headerbuf = gst_buffer_new_wrapped (header, len);
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/* we do not want to lose the ref on the incoming buffer */
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gst_buffer_ref (buffer);
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return gst_buffer_append (headerbuf, buffer);
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/* ERRORS */
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no_buffer:
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{
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GST_WARNING_OBJECT (this, "could not create GDP header from buffer");
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return NULL;
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}
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}
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static GstBuffer *
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gst_gdp_buffer_from_event (GstGDPPay * this, GstEvent * event)
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{
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GstBuffer *headerbuf;
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GstBuffer *payloadbuf;
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guint8 *header, *payload;
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guint len, plen;
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gboolean ret;
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ret =
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this->packetizer->packet_from_event (event, this->header_flag, &len,
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&header, &payload);
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if (!ret)
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goto no_event;
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GST_LOG_OBJECT (this, "creating GDP header and payload buffer from event");
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headerbuf = gst_buffer_new_wrapped (header, len);
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payloadbuf = gst_buffer_new ();
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plen = gst_dp_header_payload_length (header);
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if (plen && payload != NULL) {
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gst_buffer_append_memory (payloadbuf,
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gst_memory_new_wrapped (0, payload, plen, 0, plen, payload, g_free));
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}
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return gst_buffer_append (headerbuf, payloadbuf);
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/* ERRORS */
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no_event:
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{
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GST_WARNING_OBJECT (this, "could not create GDP header from event %s (%d)",
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gst_event_type_get_name (event->type), event->type);
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return NULL;
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}
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}
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/* set our caps with streamheader, based on the latest newsegment and caps,
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* and (possibly) GDP-serialized buffers of the streamheaders on the src pad */
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static GstFlowReturn
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gst_gdp_pay_reset_streamheader (GstGDPPay * this)
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{
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GstCaps *caps;
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/* We use copies of these to avoid circular refcounts */
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GstBuffer *new_segment_buf, *caps_buf, *tag_buf, *streamstartid_buf;
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GstStructure *structure;
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GstFlowReturn r = GST_FLOW_OK;
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gboolean version_one_zero = TRUE;
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GValue array = { 0 };
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GValue value = { 0 };
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GST_DEBUG_OBJECT (this, "start");
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/* In version 0.2, we didn't need or send new segment or tags */
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if (this->version == GST_DP_VERSION_0_2)
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version_one_zero = FALSE;
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if (version_one_zero) {
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if (!this->new_segment_buf || !this->caps_buf || !this->streamstartid_buf) {
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GST_DEBUG_OBJECT (this, "1.0, missing new_segment or caps or stream "
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"start id, returning");
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return GST_FLOW_OK;
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}
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} else {
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if (!this->caps_buf) {
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GST_DEBUG_OBJECT (this, "0.2, missing caps, returning");
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return GST_FLOW_OK;
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}
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}
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/* put copies of the buffers in a fixed list
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* Stamp the buffers with offset and offset_end as well.
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* We do this here so the offsets match the order the buffers go out in */
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g_value_init (&array, GST_TYPE_ARRAY);
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if (version_one_zero) {
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gst_gdp_stamp_buffer (this, this->streamstartid_buf);
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GST_DEBUG_OBJECT (this, "appending copy of stream start id buffer %p",
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this->streamstartid_buf);
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streamstartid_buf = gst_buffer_copy (this->streamstartid_buf);
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g_value_init (&value, GST_TYPE_BUFFER);
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gst_value_set_buffer (&value, streamstartid_buf);
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gst_value_array_append_value (&array, &value);
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g_value_unset (&value);
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gst_buffer_unref (streamstartid_buf);
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}
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gst_gdp_stamp_buffer (this, this->caps_buf);
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GST_DEBUG_OBJECT (this, "appending copy of caps buffer %p", this->caps_buf);
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caps_buf = gst_buffer_copy (this->caps_buf);
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g_value_init (&value, GST_TYPE_BUFFER);
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gst_value_set_buffer (&value, caps_buf);
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gst_value_array_append_value (&array, &value);
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g_value_unset (&value);
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gst_buffer_unref (caps_buf);
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if (version_one_zero) {
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gst_gdp_stamp_buffer (this, this->new_segment_buf);
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GST_DEBUG_OBJECT (this, "1.0, appending copy of new segment buffer %p",
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this->new_segment_buf);
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new_segment_buf = gst_buffer_copy (this->new_segment_buf);
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g_value_init (&value, GST_TYPE_BUFFER);
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gst_value_set_buffer (&value, new_segment_buf);
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gst_value_array_append_value (&array, &value);
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g_value_unset (&value);
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gst_buffer_unref (new_segment_buf);
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if (this->tag_buf) {
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gst_gdp_stamp_buffer (this, this->tag_buf);
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GST_DEBUG_OBJECT (this, "1.0, appending current tags buffer %p",
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this->tag_buf);
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tag_buf = this->tag_buf;
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this->tag_buf = NULL;
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g_value_init (&value, GST_TYPE_BUFFER);
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gst_value_set_buffer (&value, tag_buf);
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gst_value_array_append_value (&array, &value);
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g_value_unset (&value);
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gst_buffer_unref (tag_buf);
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}
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}
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/* we also need to add GDP serializations of the streamheaders of the
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* incoming caps */
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structure = gst_caps_get_structure (this->caps, 0);
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if (gst_structure_has_field (structure, "streamheader")) {
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const GValue *sh;
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GArray *buffers;
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GstBuffer *buffer;
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int i;
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sh = gst_structure_get_value (structure, "streamheader");
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buffers = g_value_peek_pointer (sh);
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GST_DEBUG_OBJECT (this,
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"Need to serialize %d incoming streamheader buffers on ours",
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buffers->len);
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for (i = 0; i < buffers->len; ++i) {
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GValue *bufval;
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GstBuffer *outbuffer;
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bufval = &g_array_index (buffers, GValue, i);
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buffer = g_value_peek_pointer (bufval);
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/* this buffer is deserialized by gdpdepay as a regular buffer,
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it needs HEADER, because it's a streamheader - otherwise it
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is mixed with regular data buffers */
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GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_HEADER);
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GST_BUFFER_OFFSET (buffer) = GST_BUFFER_OFFSET_NONE;
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GST_BUFFER_OFFSET_END (buffer) = GST_BUFFER_OFFSET_NONE;
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GST_BUFFER_TIMESTAMP (buffer) = GST_CLOCK_TIME_NONE;
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outbuffer = gst_gdp_pay_buffer_from_buffer (this, buffer);
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if (!outbuffer) {
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g_value_unset (&array);
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goto no_buffer;
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}
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/* Setting HEADER as other GDP event buffers */
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GST_DEBUG_OBJECT (this,
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"Setting HEADER flag on outgoing buffer %" GST_PTR_FORMAT, outbuffer);
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GST_BUFFER_FLAG_SET (outbuffer, GST_BUFFER_FLAG_HEADER);
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GST_BUFFER_OFFSET (outbuffer) = GST_BUFFER_OFFSET_NONE;
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GST_BUFFER_OFFSET_END (outbuffer) = GST_BUFFER_OFFSET_NONE;
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GST_BUFFER_TIMESTAMP (outbuffer) = GST_CLOCK_TIME_NONE;
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g_value_init (&value, GST_TYPE_BUFFER);
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gst_value_set_buffer (&value, outbuffer);
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gst_value_array_append_value (&array, &value);
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g_value_unset (&value);
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gst_buffer_unref (outbuffer);
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}
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} else {
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GST_DEBUG_OBJECT (this, "no streamheader to serialize");
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}
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GST_DEBUG_OBJECT (this, "%d serialized buffers on streamheaders",
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gst_value_array_get_size (&array));
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caps = gst_caps_from_string ("application/x-gdp");
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structure = gst_caps_get_structure (caps, 0);
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gst_structure_set_value (structure, "streamheader", &array);
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g_value_unset (&array);
|
|
|
|
GST_DEBUG_OBJECT (this, "Setting caps on src pad %" GST_PTR_FORMAT, caps);
|
|
gst_pad_set_caps (this->srcpad, caps);
|
|
|
|
/* if these are our first ever buffers, send out new_segment first */
|
|
if (!this->sent_streamheader) {
|
|
GstEvent *event;
|
|
GstSegment segment;
|
|
|
|
gst_segment_init (&segment, GST_FORMAT_BYTES);
|
|
event = gst_event_new_segment (&segment);
|
|
|
|
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 stream-start-id buffer %p",
|
|
this->streamstartid_buf);
|
|
r = gst_pad_push (this->srcpad, gst_buffer_ref (this->streamstartid_buf));
|
|
if (r != GST_FLOW_OK) {
|
|
GST_WARNING_OBJECT (this, "pushing GDP stream-start-id 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;
|
|
}
|
|
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_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;
|
|
}
|
|
}
|
|
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 */
|
|
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);
|
|
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));
|
|
|
|
gst_gdp_pay_reset_streamheader (this);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_gdp_pay_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
|
|
{
|
|
GstGDPPay *this;
|
|
#if 0
|
|
GstCaps *caps;
|
|
#endif
|
|
GstBuffer *outbuffer;
|
|
GstFlowReturn ret;
|
|
|
|
this = GST_GDP_PAY (parent);
|
|
|
|
/* 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;
|
|
GstSegment segment;
|
|
|
|
GST_WARNING_OBJECT (this,
|
|
"did not receive new-segment before first buffer");
|
|
gst_segment_init (&segment, GST_FORMAT_BYTES);
|
|
event = gst_event_new_segment (&segment);
|
|
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_HEADER);
|
|
GST_DEBUG_OBJECT (this, "Storing buffer %p as new_segment_buf",
|
|
outbuffer);
|
|
this->new_segment_buf = outbuffer;
|
|
}
|
|
}
|
|
/* make sure we've received caps before */
|
|
if (!this->caps)
|
|
goto no_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 HEADER, 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_HEADER)) {
|
|
GST_DEBUG_OBJECT (this, "Setting HEADER flag on outgoing buffer %p",
|
|
outbuffer);
|
|
GST_BUFFER_FLAG_SET (outbuffer, GST_BUFFER_FLAG_HEADER);
|
|
}
|
|
|
|
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);
|
|
|
|
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"));
|
|
ret = GST_FLOW_NOT_NEGOTIATED;
|
|
goto done;
|
|
}
|
|
#if 0
|
|
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;
|
|
}
|
|
#endif
|
|
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, GstObject * parent, GstEvent * event)
|
|
{
|
|
GstBuffer *outbuffer;
|
|
GstGDPPay *this = GST_GDP_PAY (parent);
|
|
GstFlowReturn flowret;
|
|
GstCaps *caps;
|
|
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_STREAM_START:
|
|
GST_DEBUG_OBJECT (this, "Storing stream start id in buffer %p",
|
|
outbuffer);
|
|
|
|
if (this->streamstartid_buf)
|
|
gst_buffer_unref (this->streamstartid_buf);
|
|
this->streamstartid_buf = outbuffer;
|
|
|
|
GST_BUFFER_FLAG_SET (outbuffer, GST_BUFFER_FLAG_HEADER);
|
|
gst_gdp_pay_reset_streamheader (this);
|
|
break;
|
|
case GST_EVENT_SEGMENT:
|
|
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_HEADER);
|
|
gst_gdp_pay_reset_streamheader (this);
|
|
break;
|
|
case GST_EVENT_CAPS:{
|
|
gst_event_parse_caps (event, &caps);
|
|
gst_buffer_replace (&outbuffer, NULL);
|
|
if (this->caps == NULL || !gst_caps_is_equal (this->caps, caps)) {
|
|
GST_INFO_OBJECT (pad, "caps changed to %" GST_PTR_FORMAT, caps);
|
|
gst_caps_replace (&this->caps, caps);
|
|
outbuffer = gst_gdp_buffer_from_caps (this, caps);
|
|
if (outbuffer == NULL)
|
|
goto no_buffer_from_caps;
|
|
|
|
GST_BUFFER_DURATION (outbuffer) = 0;
|
|
GST_BUFFER_FLAG_SET (outbuffer, GST_BUFFER_FLAG_HEADER);
|
|
if (this->caps_buf)
|
|
gst_buffer_unref (this->caps_buf);
|
|
this->caps_buf = outbuffer;
|
|
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_HEADER);
|
|
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_EVENT_TYPE (event) == GST_EVENT_STREAM_START) {
|
|
GST_DEBUG_OBJECT (this, "Sending on event %" GST_PTR_FORMAT, event);
|
|
/* ref, we unref later again */
|
|
ret = gst_pad_push_event (this->srcpad, gst_event_ref (event));
|
|
}
|
|
|
|
done:
|
|
gst_event_unref (event);
|
|
|
|
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;
|
|
}
|
|
no_buffer_from_caps:
|
|
{
|
|
GST_ELEMENT_ERROR (this, STREAM, ENCODE, (NULL),
|
|
("Could not create GDP buffer from caps %" GST_PTR_FORMAT, caps));
|
|
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, GstObject * parent, GstEvent * event)
|
|
{
|
|
GstGDPPay *this;
|
|
gboolean res = TRUE;
|
|
|
|
this = GST_GDP_PAY (parent);
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|