![]() |
![]() |
![]() |
GStreamer Base Plugins 1.0 Library Reference Manual | ![]() |
---|---|---|---|---|
Top | Description | Object Hierarchy | Properties |
#include <gst/rtp/gstrtpbasepayload.h> struct GstRTPBasePayload; struct GstRTPBasePayloadClass; #define GST_RTP_BASE_PAYLOAD_MTU (payload) #define GST_RTP_BASE_PAYLOAD_PT (payload) #define GST_RTP_BASE_PAYLOAD_SINKPAD (payload) #define GST_RTP_BASE_PAYLOAD_SRCPAD (payload) gboolean gst_rtp_base_payload_is_filled (GstRTPBasePayload *payload
,guint size
,GstClockTime duration
); GstFlowReturn gst_rtp_base_payload_push (GstRTPBasePayload *payload
,GstBuffer *buffer
); GstFlowReturn gst_rtp_base_payload_push_list (GstRTPBasePayload *payload
,GstBufferList *list
); void gst_rtp_base_payload_set_options (GstRTPBasePayload *payload
,const gchar *media
,gboolean dynamic
,const gchar *encoding_name
,guint32 clock_rate
); gboolean gst_rtp_base_payload_set_outcaps (GstRTPBasePayload *payload
,const gchar *fieldname
,...
);
GObject +----GInitiallyUnowned +----GstObject +----GstElement +----GstRTPBasePayload +----GstRTPBaseAudioPayload
"max-ptime" gint64 : Read / Write "min-ptime" gint64 : Read / Write "mtu" guint : Read / Write "perfect-rtptime" gboolean : Read / Write "pt" guint : Read / Write "ptime-multiple" gint64 : Read / Write "seqnum" guint : Read "seqnum-offset" gint : Read / Write "ssrc" guint : Read / Write "timestamp" guint : Read "timestamp-offset" guint : Read / Write
struct GstRTPBasePayloadClass { GstElementClass parent_class; /* query accepted caps */ GstCaps * (*get_caps) (GstRTPBasePayload *payload, GstPad * pad, GstCaps * filter); /* receive caps on the sink pad, configure the payloader. */ gboolean (*set_caps) (GstRTPBasePayload *payload, GstCaps *caps); /* handle a buffer, perform 0 or more gst_rtp_base_payload_push() on * the RTP buffers. This function takes ownership of the buffer. */ GstFlowReturn (*handle_buffer) (GstRTPBasePayload *payload, GstBuffer *buffer); /* handle events and queries */ gboolean (*sink_event) (GstRTPBasePayload *payload, GstEvent * event); gboolean (*src_event) (GstRTPBasePayload *payload, GstEvent * event); gboolean (*query) (GstRTPBasePayload *payload, GstPad *pad, GstQuery * query); };
Base class for audio RTP payloader.
#define GST_RTP_BASE_PAYLOAD_MTU(payload) (GST_RTP_BASE_PAYLOAD (payload)->mtu)
Get access to the configured MTU of payload
.
|
a GstRTPBasePayload |
#define GST_RTP_BASE_PAYLOAD_PT(payload) (GST_RTP_BASE_PAYLOAD (payload)->pt)
Get access to the configured payload type of payload
.
|
a GstRTPBasePayload |
#define GST_RTP_BASE_PAYLOAD_SINKPAD(payload) (GST_RTP_BASE_PAYLOAD (payload)->sinkpad)
Get access to the sinkpad of payload
.
|
a GstRTPBasePayload |
#define GST_RTP_BASE_PAYLOAD_SRCPAD(payload) (GST_RTP_BASE_PAYLOAD (payload)->srcpad)
Get access to the srcpad of payload
.
|
a GstRTPBasePayload |
gboolean gst_rtp_base_payload_is_filled (GstRTPBasePayload *payload
,guint size
,GstClockTime duration
);
Check if the packet with size
and duration
would exceed the configured
maximum size.
|
a GstRTPBasePayload |
|
the size of the packet |
|
the duration of the packet |
Returns : |
TRUE if the packet of size and duration would exceed the
configured MTU or max_ptime. |
GstFlowReturn gst_rtp_base_payload_push (GstRTPBasePayload *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
.
|
a GstRTPBasePayload |
|
a GstBuffer |
Returns : |
a GstFlowReturn. |
GstFlowReturn gst_rtp_base_payload_push_list (GstRTPBasePayload *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
.
|
a GstRTPBasePayload |
|
a GstBufferList |
Returns : |
a GstFlowReturn. |
void gst_rtp_base_payload_set_options (GstRTPBasePayload *payload
,const gchar *media
,gboolean dynamic
,const 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_rtp_base_payload_push()
or gst_rtp_base_payload_set_outcaps()
.
|
a GstRTPBasePayload |
|
the media type (typically "audio" or "video") |
|
if the payload type is dynamic |
|
the encoding name |
|
the clock rate of the media |
gboolean gst_rtp_base_payload_set_outcaps (GstRTPBasePayload *payload
,const 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.
|
a GstRTPBasePayload |
|
the first field name or NULL
|
|
field values |
Returns : |
TRUE if the caps could be set. |
"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
"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
"mtu"
property "mtu" guint : Read / Write
Maximum size of one packet.
Allowed values: >= 28
Default value: 1400
"perfect-rtptime"
property "perfect-rtptime" gboolean : Read / Write
Generate perfect RTP timestamps when possible.
Default value: TRUE
"pt"
property "pt" guint : Read / Write
The payload type of the packets.
Allowed values: <= 128
Default value: 96
"ptime-multiple"
property "ptime-multiple" gint64 : Read / Write
Force buffers to be multiples of this duration in ns (0 disables).
Allowed values: >= 0
Default value: 0
"seqnum"
property "seqnum" guint : Read
The RTP sequence number of the last processed packet.
Allowed values: <= 65535
Default value: 0
"seqnum-offset"
property "seqnum-offset" gint : Read / Write
Offset to add to all outgoing seqnum (-1 = random).
Allowed values: [-1,65535]
Default value: -1
"ssrc"
property "ssrc" guint : Read / Write
The SSRC of the packets (default == random).
Default value: 4294967295
"timestamp"
property "timestamp" guint : Read
The RTP timestamp of the last processed packet.
Default value: 0