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GStreamer Base Plugins 0.10 Library Reference Manual | |
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#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
#define GST_RTP_PAYLOAD_IS_DYNAMIC(pt) ((pt) >= 96 && (pt) <= 127)
Check if pt is a dynamic payload type.
pt : |
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.
guint8 payload_type; |
payload type, -1 means dynamic |
const gchar *media; |
the media type(s), usually "audio", "video", "application", "text", "message". |
const gchar *encoding_name; |
the encoding name of pt
|
guint clock_rate; |
default clock rate, 0 = unknown/variable |
const gchar *encoding_parameters; |
encoding parameters. For audio this is the number of channels. NULL = not applicable. |
guint bitrate; |
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.
media : |
the media to find |
encoding_name : |
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.
payload_type : |
the payload_type to find |
| Returns : | a GstRTPPayloadInfo or NULL when no info could be found. |