--- /dev/null
+/* GStreamer
+ * Copyright (C) <2007> Thijs Vermeir <thijsvermeir@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <gst/rtp/gstrtpbuffer.h>
+
+#include "gstrtpmpvpay.h"
+
+static const GstElementDetails gst_rtp_mpv_pay_details =
+GST_ELEMENT_DETAILS ("RTP MPEG2 ES video payloader",
+ "Codec/Payloader/Network",
+ "Payload-encodes MPEG2 ES into RTP packets (RFC 2250)",
+ "Thijs Vermeir <thijsvermeir@gmail.com>");
+
+static GstStaticPadTemplate gst_rtp_mpv_pay_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("video/mpeg, "
+ "mpegversion = (int) 2, systemstream = (boolean) FALSE")
+ );
+
+static GstStaticPadTemplate gst_rtp_mpv_pay_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("application/x-rtp, "
+ "media = (string) \"video\", "
+ "payload = (int) " GST_RTP_PAYLOAD_MPV_STRING ", "
+ "clock-rate = (int) 90000, " "encoding-name = (string) \"MPV\"")
+ );
+
+static gboolean gst_rtp_mpv_pay_setcaps (GstBaseRTPPayload * payload,
+ GstCaps * caps);
+static GstFlowReturn gst_rtp_mpv_pay_handle_buffer (GstBaseRTPPayload *
+ payload, GstBuffer * buffer);
+static GstFlowReturn gst_rtp_mpv_pay_flush (GstRTPMPVPay * rtpmpvpay,
+ GstClockTime timestamp, GstClockTime duration);
+static void gst_rtp_mpv_pay_finalize (GObject * object);
+
+GST_BOILERPLATE (GstRTPMPVPay, gst_rtp_mpv_pay, GstBaseRTPPayload,
+ GST_TYPE_BASE_RTP_PAYLOAD);
+
+static void
+gst_rtp_mpv_pay_base_init (gpointer klass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_rtp_mpv_pay_sink_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_rtp_mpv_pay_src_template));
+ gst_element_class_set_details (element_class, &gst_rtp_mpv_pay_details);
+}
+
+static void
+gst_rtp_mpv_pay_class_init (GstRTPMPVPayClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+ GstBaseRTPPayloadClass *gstbasertppayload_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+ gstbasertppayload_class = (GstBaseRTPPayloadClass *) klass;
+
+ gobject_class->finalize = gst_rtp_mpv_pay_finalize;
+
+ gstbasertppayload_class->set_caps = gst_rtp_mpv_pay_setcaps;
+ gstbasertppayload_class->handle_buffer = gst_rtp_mpv_pay_handle_buffer;
+}
+
+static void
+gst_rtp_mpv_pay_init (GstRTPMPVPay * rtpmpvpay, GstRTPMPVPayClass * klass)
+{
+ GST_BASE_RTP_PAYLOAD (rtpmpvpay)->clock_rate = 90000;
+ GST_BASE_RTP_PAYLOAD_PT (rtpmpvpay) = GST_RTP_PAYLOAD_MPV;
+
+ rtpmpvpay->adapter = gst_adapter_new ();
+}
+
+static void
+gst_rtp_mpv_pay_finalize (GObject * object)
+{
+ GstRTPMPVPay *rtpmpvpay;
+
+ rtpmpvpay = GST_RTP_MPV_PAY (object);
+
+ g_object_unref (rtpmpvpay->adapter);
+ rtpmpvpay->adapter = NULL;
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static gboolean
+gst_rtp_mpv_pay_setcaps (GstBaseRTPPayload * payload, GstCaps * caps)
+{
+ const char *stname;
+ GstStructure *structure;
+
+ structure = gst_caps_get_structure (caps, 0);
+
+ stname = gst_structure_get_name (structure);
+
+ gst_basertppayload_set_options (payload, "video", FALSE, "MPV", 90000);
+ gst_basertppayload_set_outcaps (payload, NULL);
+
+ return TRUE;
+}
+
+static GstFlowReturn
+gst_rtp_mpv_pay_flush (GstRTPMPVPay * rtpmpvpay, GstClockTime timestamp,
+ GstClockTime duration)
+{
+ GstBuffer *outbuf;
+ GstFlowReturn ret;
+ guint avail;
+ guint8 *payload;
+ gint packet_size;
+ gint payload_size;
+
+ avail = gst_adapter_available (rtpmpvpay->adapter);
+ packet_size = gst_rtp_buffer_calc_packet_len (4 + avail, 0, 0);
+
+ /* check for the maximum size of the rtp buffer */
+ if (packet_size > GST_BASE_RTP_PAYLOAD_MTU (rtpmpvpay)) {
+ payload_size =
+ GST_BASE_RTP_PAYLOAD_MTU (rtpmpvpay) -
+ gst_rtp_buffer_calc_packet_len (4, 0, 0);
+ } else {
+ payload_size = avail;
+ }
+ outbuf = gst_rtp_buffer_new_allocate (4 + payload_size, 0, 0);
+ /* enable MPEG Video-specific header
+ *
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | MBZ |T| TR | |N|S|B|E| P | | BFC | | FFC |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * AN FBV FFV
+ */
+ payload = gst_rtp_buffer_get_payload (outbuf);
+ /* fill in the MPEG Video-specific header */
+ memset (payload, 0x0, 4);
+ /* copy stuff from adapter to payload */
+ gst_adapter_copy (rtpmpvpay->adapter, payload + 4, 0, payload_size);
+ GST_BUFFER_TIMESTAMP (outbuf) = rtpmpvpay->first_ts;
+ GST_BUFFER_DURATION (outbuf) = rtpmpvpay->duration;
+
+ GST_DEBUG_OBJECT (rtpmpvpay, "pushing buffer of size %d",
+ GST_BUFFER_SIZE (outbuf));
+ ret = gst_basertppayload_push (GST_BASE_RTP_PAYLOAD (rtpmpvpay), outbuf);
+ gst_adapter_flush (rtpmpvpay->adapter, payload_size);
+
+ /* update the timestamp and duration */
+ rtpmpvpay->first_ts = timestamp;
+ rtpmpvpay->duration = duration;
+
+ /* check if there is enough data for another rtp buffer */
+ avail = gst_adapter_available (rtpmpvpay->adapter);
+ packet_size = gst_rtp_buffer_calc_packet_len (4 + avail, 0, 0);
+
+ if (packet_size >= GST_BASE_RTP_PAYLOAD_MTU (rtpmpvpay) && ret == GST_FLOW_OK) {
+ GST_DEBUG_OBJECT (rtpmpvpay, "Have enough data for another rtp packet");
+ ret = gst_rtp_mpv_pay_flush (rtpmpvpay, timestamp, duration);
+ }
+ return ret;
+}
+
+static GstFlowReturn
+gst_rtp_mpv_pay_handle_buffer (GstBaseRTPPayload * basepayload,
+ GstBuffer * buffer)
+{
+ GstRTPMPVPay *rtpmpvpay;
+ guint size, avail, packet_len;
+ guint8 *data;
+ GstClockTime timestamp, duration;
+ GstFlowReturn ret;
+
+ rtpmpvpay = GST_RTP_MPV_PAY (basepayload);
+
+ size = GST_BUFFER_SIZE (buffer);
+ data = GST_BUFFER_DATA (buffer);
+ timestamp = GST_BUFFER_TIMESTAMP (buffer);
+ duration = GST_BUFFER_DURATION (buffer);
+
+ gst_adapter_push (rtpmpvpay->adapter, buffer);
+ avail = gst_adapter_available (rtpmpvpay->adapter);
+
+ /* Initialize new RTP payload */
+ if (avail == 0) {
+ rtpmpvpay->first_ts = timestamp;
+ rtpmpvpay->duration = duration;
+ }
+
+ /* get packet length of previous data and this new data,
+ * payload length includes a 4 byte MPEG video-specific header */
+ packet_len = gst_rtp_buffer_calc_packet_len (4 + avail, 0, 0);
+
+ if (gst_basertppayload_is_filled (basepayload,
+ packet_len, rtpmpvpay->duration + duration)) {
+ ret = gst_rtp_mpv_pay_flush (rtpmpvpay, timestamp, duration);
+ } else {
+ if (GST_CLOCK_TIME_IS_VALID (duration))
+ rtpmpvpay->duration += duration;
+ ret = GST_FLOW_OK;
+ }
+ return ret;
+}
+
+gboolean
+gst_rtp_mpv_pay_plugin_init (GstPlugin * plugin)
+{
+ return gst_element_register (plugin, "rtpmpvpay",
+ GST_RANK_NONE, GST_TYPE_RTP_MPV_PAY);
+}
--- /dev/null
+/* GStreamer
+ * Copyright (C) <2007> Thijs Vermeir <thijsvermeir@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#ifndef __GST_RTP_MPV_PAY_H__
+#define __GST_RTP_MPV_PAY_H__
+
+#include <gst/gst.h>
+#include <gst/rtp/gstbasertppayload.h>
+#include <gst/base/gstadapter.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GstRTPMPVPay GstRTPMPVPay;
+typedef struct _GstRTPMPVPayClass GstRTPMPVPayClass;
+
+#define GST_TYPE_RTP_MPV_PAY \
+ (gst_rtp_mpv_pay_get_type())
+#define GST_RTP_MPV_PAY(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_MPV_PAY,GstRTPMPVPay))
+#define GST_RTP_MPV_PAY_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_MPV_PAY,GstRTPMPVPayClass))
+#define GST_IS_RTP_MPV_PAY(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_MPV_PAY))
+#define GST_IS_RTP_MPV_PAY_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_MPV_PAY))
+
+struct _GstRTPMPVPay
+{
+ GstBaseRTPPayload payload;
+
+ GstAdapter *adapter;
+ GstClockTime first_ts;
+ GstClockTime duration;
+};
+
+struct _GstRTPMPVPayClass
+{
+ GstBaseRTPPayloadClass parent_class;
+};
+
+gboolean gst_rtp_mpv_pay_plugin_init (GstPlugin * plugin);
+
+G_END_DECLS
+
+#endif /* __GST_RTP_MPV_PAY_H__ */
projects / platform / upstream / gstreamer.git / commitdiff