Provides a base class for RTP payloaders

GstBaseRTPPayload

typedef struct _GstBaseRTPPayload GstBaseRTPPayload;

GstBaseRTPPayloadClass

typedef struct {
  GstElementClass parent_class;

  /* receive caps on the sink pad, configure the payloader. */
  gboolean      (*set_caps)             (GstBaseRTPPayload *payload, GstCaps *caps);
  /* handle a buffer, perform 0 or more gst_basertppayload_push() on
   * the RTP buffers. This function takes ownership of the buffer. */
  GstFlowReturn (*handle_buffer)        (GstBaseRTPPayload *payload,
                                         GstBuffer *buffer);
  gboolean      (*handle_event)         (GstPad * pad, GstEvent * event);
  GstCaps *     (*get_caps)             (GstBaseRTPPayload *payload, GstPad * pad);
} GstBaseRTPPayloadClass;

GST_BASE_RTP_PAYLOAD_MTU()

#define GST_BASE_RTP_PAYLOAD_MTU(payload) (GST_BASE_RTP_PAYLOAD (payload)->mtu)

Get access to the configured MTU of payload.

GST_BASE_RTP_PAYLOAD_PT()

#define GST_BASE_RTP_PAYLOAD_PT(payload)  (GST_BASE_RTP_PAYLOAD (payload)->pt)

Get access to the configured payload type of payload.

GST_BASE_RTP_PAYLOAD_SINKPAD()

#define GST_BASE_RTP_PAYLOAD_SINKPAD(payload) (GST_BASE_RTP_PAYLOAD (payload)->sinkpad)

Get access to the sinkpad of payload.

GST_BASE_RTP_PAYLOAD_SRCPAD()

#define GST_BASE_RTP_PAYLOAD_SRCPAD(payload)  (GST_BASE_RTP_PAYLOAD (payload)->srcpad)

Get access to the srcpad of payload.

gst_basertppayload_is_filled ()

gboolean            gst_basertppayload_is_filled        (GstBaseRTPPayload *payload,
                                                         guint size,
                                                         GstClockTime duration);

Check if the packet with size and duration would exceed the configured maximum size.

gst_basertppayload_push ()

GstFlowReturn       gst_basertppayload_push             (GstBaseRTPPayload *payload,
                                                         GstBuffer *buffer);

Push buffer to the peer element of the payloader. The SSRC, payload type, seqnum and timestamp of the RTP buffer will be updated first.

This function takes ownership of buffer.

gst_basertppayload_push_list ()

GstFlowReturn       gst_basertppayload_push_list        (GstBaseRTPPayload *payload,
                                                         GstBufferList *list);

Push list to the peer element of the payloader. The SSRC, payload type, seqnum and timestamp of the RTP buffer will be updated first.

This function takes ownership of list.

Since 0.10.24

gst_basertppayload_set_options ()

void                gst_basertppayload_set_options      (GstBaseRTPPayload *payload,
                                                         gchar *media,
                                                         gboolean dynamic,
                                                         gchar *encoding_name,
                                                         guint32 clock_rate);

Set the rtp options of the payloader. These options will be set in the caps of the payloader. Subclasses must call this method before calling gst_basertppayload_push() or gst_basertppayload_set_outcaps().

gst_basertppayload_set_outcaps ()

gboolean            gst_basertppayload_set_outcaps      (GstBaseRTPPayload *payload,
                                                         gchar *fieldname,
                                                         ...);

Configure the output caps with the optional parameters.

Variable arguments should be in the form field name, field type (as a GType), value(s). The last variable argument should be NULL.

The "max-ptime" property

  "max-ptime"                gint64                : Read / Write

Maximum duration of the packet data in ns (-1 = unlimited up to MTU).

Allowed values: >= -1

Default value: -1

The "min-ptime" property

  "min-ptime"                gint64                : Read / Write

Minimum duration of the packet data in ns (can't go above MTU).

Allowed values: >= 0

Default value: 0

The "mtu" property

  "mtu"                      guint                 : Read / Write

Maximum size of one packet.

Allowed values: >= 28

Default value: 1400

The "perfect-rtptime" property

  "perfect-rtptime"          gboolean              : Read / Write

Generate perfect RTP timestamps when possible.

Default value: TRUE

The "pt" property

  "pt"                       guint                 : Read / Write

The payload type of the packets.

Allowed values: <= 128

Default value: 96

The "seqnum" property

  "seqnum"                   guint                 : Read

The RTP sequence number of the last processed packet.

Allowed values: <= 65535

Default value: 0

The "seqnum-offset" property

  "seqnum-offset"            gint                  : Read / Write

Offset to add to all outgoing seqnum (-1 = random).

Allowed values: [-1,65535]

Default value: -1

The "ssrc" property

  "ssrc"                     guint                 : Read / Write

The SSRC of the packets (default == random).

Default value: 4294967295

The "timestamp" property

  "timestamp"                guint                 : Read

The RTP timestamp of the last processed packet.

Default value: 0

The "timestamp-offset" property

  "timestamp-offset"         guint                 : Read / Write

Offset to add to all outgoing timestamps (default = random).

Default value: 4294967295