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GStreamer Base Plugins 0.10 Library Reference Manual | ![]() |
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Top | Description |
#include <gst/rtp/gstrtppayload.h> enum GstRTPPayload; #define GST_RTP_PAYLOAD_IS_DYNAMIC (pt) GstRTPPayloadInfo; const GstRTPPayloadInfo * gst_rtp_payload_info_for_name (const gchar *media
,const gchar *encoding_name
); const GstRTPPayloadInfo * gst_rtp_payload_info_for_pt (guint8 payload_type
);
The GstRTPPayloads helper functions makes it easy to deal with static and dynamic payloads. Its main purpose is to retrieve properties such as the default clock-rate and get session bandwidth information.
Last reviewed on 2007-10-01 (0.10.15)
typedef enum { /* Audio: */ GST_RTP_PAYLOAD_PCMU = 0, GST_RTP_PAYLOAD_1016 = 1, /* RFC 3551 says reserved */ GST_RTP_PAYLOAD_G721 = 2, /* RFC 3551 says reserved */ GST_RTP_PAYLOAD_GSM = 3, GST_RTP_PAYLOAD_G723 = 4, GST_RTP_PAYLOAD_DVI4_8000 = 5, GST_RTP_PAYLOAD_DVI4_16000 = 6, GST_RTP_PAYLOAD_LPC = 7, GST_RTP_PAYLOAD_PCMA = 8, GST_RTP_PAYLOAD_G722 = 9, GST_RTP_PAYLOAD_L16_STEREO = 10, GST_RTP_PAYLOAD_L16_MONO = 11, GST_RTP_PAYLOAD_QCELP = 12, GST_RTP_PAYLOAD_CN = 13, GST_RTP_PAYLOAD_MPA = 14, GST_RTP_PAYLOAD_G728 = 15, GST_RTP_PAYLOAD_DVI4_11025 = 16, GST_RTP_PAYLOAD_DVI4_22050 = 17, GST_RTP_PAYLOAD_G729 = 18, /* Video: */ GST_RTP_PAYLOAD_CELLB = 25, GST_RTP_PAYLOAD_JPEG = 26, GST_RTP_PAYLOAD_NV = 28, GST_RTP_PAYLOAD_H261 = 31, GST_RTP_PAYLOAD_MPV = 32, GST_RTP_PAYLOAD_MP2T = 33, GST_RTP_PAYLOAD_H263 = 34, /* BOTH */ } GstRTPPayload;
Standard predefined fixed payload types.
The official list is at: http://www.iana.org/assignments/rtp-parameters
Audio: reserved: 19 unassigned: 20-23,
Video: unassigned: 24, 27, 29, 30, 35-71, 77-95 Reserved for RTCP conflict avoidance: 72-76
ITU-T G.711. mu-law audio (RFC 3551) | |
RFC 3551 says reserved | |
RFC 3551 says reserved | |
GSM audio | |
ITU G.723.1 audio | |
IMA ADPCM wave type (RFC 3551) | |
IMA ADPCM wave type (RFC 3551) | |
experimental linear predictive encoding | |
ITU-T G.711 A-law audio (RFC 3551) | |
ITU-T G.722 (RFC 3551) | |
stereo PCM | |
mono PCM | |
EIA & TIA standard IS-733 | |
Comfort Noise (RFC 3389) | |
Audio MPEG 1-3. | |
ITU-T G.728 Speech coder (RFC 3551) | |
IMA ADPCM wave type (RFC 3551) | |
IMA ADPCM wave type (RFC 3551) | |
ITU-T G.729 Speech coder (RFC 3551) | |
See RFC 2029 | |
ISO Standards 10918-1 and 10918-2 (RFC 2435) | |
nv encoding by Ron Frederick | |
ITU-T Recommendation H.261 (RFC 2032) | |
Video MPEG 1 & 2 (RFC 2250) | |
MPEG-2 transport stream (RFC 2250) | |
Video H263 (RFC 2190) |
#define GST_RTP_PAYLOAD_IS_DYNAMIC(pt) ((pt) >= 96 && (pt) <= 127)
Check if pt
is a dynamic payload type.
|
a payload type |
typedef struct { guint8 payload_type; const gchar *media; const gchar *encoding_name; guint clock_rate; const gchar *encoding_parameters; guint bitrate; } GstRTPPayloadInfo;
Structure holding default payload type information.
payload type, -1 means dynamic | |
the media type(s), usually "audio", "video", "application", "text", "message". | |
the encoding name of pt
|
|
default clock rate, 0 = unknown/variable | |
encoding parameters. For audio this is the number of channels. NULL = not applicable. | |
the bitrate of the media. 0 = unknown/variable. |
const GstRTPPayloadInfo * gst_rtp_payload_info_for_name (const gchar *media
,const gchar *encoding_name
);
Get the GstRTPPayloadInfo for media
and encoding_name
. This function is
mostly used to get the default clock-rate and bandwidth for dynamic payload
types specified with media
and encoding
name.
The search for encoding_name
will be performed in a case insensitve way.
|
the media to find |
|
the encoding name to find |
Returns : |
a GstRTPPayloadInfo or NULL when no info could be found. |
const GstRTPPayloadInfo * gst_rtp_payload_info_for_pt (guint8 payload_type
);
Get the GstRTPPayloadInfo for payload_type
. This function is
mostly used to get the default clock-rate and bandwidth for static payload
types specified with payload_type
.
|
the payload_type to find |
Returns : |
a GstRTPPayloadInfo or NULL when no info could be found. |