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Farsight2 Reference Manual | ![]() |
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Top | Description |
#include <gst/farsight/fs-conference-iface.h> FsCodec; enum FsMediaType; FsCodecParameter; #define FS_CODEC_ID_ANY #define FS_CODEC_ID_DISABLE FsCodec * fs_codec_new (int id, const char *encoding_name, FsMediaType media_type, guint clock_rate); void fs_codec_destroy (FsCodec *codec); FsCodec * fs_codec_copy (const FsCodec *codec); gboolean fs_codec_are_equal (const FsCodec *codec1, const FsCodec *codec2); GList * fs_codec_list_from_keyfile (const gchar *filename, GError **error); void fs_codec_list_destroy (GList *codec_list); GList * fs_codec_list_copy (const GList *codec_list); gboolean fs_codec_list_are_equal (GList *list1, GList *list2); gchar * fs_codec_to_string (const FsCodec *codec); void fs_codec_add_optional_parameter (FsCodec *codec, const gchar *name, const gchar *value); void fs_codec_remove_optional_parameter (FsCodec *codec, FsCodecParameter *param); FsCodecParameter * fs_codec_get_optional_parameter (FsCodec *codec, const gchar *name, const gchar *value); #define FS_CODEC_FORMAT #define FS_CODEC_ARGS (codec) const gchar * fs_media_type_to_string (FsMediaType media_type);
An FsCodec is a way to exchange codec information between the client and Farsight. The information specified in this structure is usually representative of the codec information exchanged in the signaling.
typedef struct { gint id; char *encoding_name; FsMediaType media_type; guint clock_rate; guint channels; GList *optional_params; } FsCodec;
This structure reprensents one codec that can be offered or received
gint |
numeric identifier for encoding, eg. PT for SDP |
char * |
the name of the codec |
FsMediaType |
type of media this codec is for |
guint |
clock rate of this stream |
guint |
Number of channels codec should decode |
GList * |
key pairs of param name to param data |
typedef enum { FS_MEDIA_TYPE_AUDIO, FS_MEDIA_TYPE_VIDEO, FS_MEDIA_TYPE_LAST = FS_MEDIA_TYPE_VIDEO } FsMediaType;
Enum used to signify the media type of a codec or stream.
A media type that encodes audio. | |
A media type that encodes video. | |
Largest valid FsMediaType |
typedef struct { gchar *name; gchar *value; } FsCodecParameter;
Used to store arbitary parameters for a codec
#define FS_CODEC_ID_ANY (-1)
If the id of a FsCodec is FS_CODEC_ID_ANY, then it will be replaced with a dynamic payload type at runtime
#define FS_CODEC_ID_DISABLE (-2)
If the id of a FsCodec is FS_CODEC_ID_DISABLE, then this codec will not be used
FsCodec * fs_codec_new (int id, const char *encoding_name, FsMediaType media_type, guint clock_rate);
Allocates and initializes a FsCodec structure
|
codec identifier, if RTP this should be based on IETF RTP payload types |
|
Name of media type this encodes |
|
FsMediaType for type of codec |
|
The clock rate this codec encodes at, if applicable |
Returns : |
A newly allocated FsCodec |
void fs_codec_destroy (FsCodec *codec);
Deletes a FsCodec structure and all its data. Is a no-op on NULL
codec
|
FsCodec structure to free |
FsCodec * fs_codec_copy (const FsCodec *codec);
Copies a FsCodec structure.
|
codec to copy |
Returns : |
a copy of the codec |
gboolean fs_codec_are_equal (const FsCodec *codec1, const FsCodec *codec2);
Compare two codecs, it will declare two codecs to be identical even
if their optional parameters are in a different order. NULL
encoding names
are ignored.
|
First codec |
|
Second codec |
Returns : |
TRUE of the codecs are identical, FALSE otherwise
|
GList * fs_codec_list_from_keyfile (const gchar *filename, GError **error);
Reads the content of a GKeyFile of the following format into a GList of FsCodec structures.
Example:
[audio/codec1] clock-rate=8000 [audio/codec1:1] clock-rate=16000 [audio/codec2] one_param=QCIF another_param=WOW
void fs_codec_list_destroy (GList *codec_list);
Deletes a list of FsCodec structures and the list itself.
Does nothing on NULL
lists.
|
a GList of FsCodec to delete |
GList * fs_codec_list_copy (const GList *codec_list);
Copies a list of FsCodec structures.
|
a GList of FsCodec to copy |
Returns : |
The new list. |
gboolean fs_codec_list_are_equal (GList *list1, GList *list2);
Verifies if two glist of fscodecs are identical
gchar * fs_codec_to_string (const FsCodec *codec);
Returns a newly-allocated string representing the codec
|
A farsight codec |
Returns : |
the newly-allocated string |
void fs_codec_add_optional_parameter (FsCodec *codec, const gchar *name, const gchar *value);
This function adds an new optional parameter to a FsCodec
|
The FsCodec to add the parameter to |
|
The name of the optional parameter |
|
The value of the optional parameter |
void fs_codec_remove_optional_parameter (FsCodec *codec, FsCodecParameter *param);
Removes an optional parameter from a codec
|
a FsCodec |
|
a pointer to the FsCodecParameter to remove |
FsCodecParameter * fs_codec_get_optional_parameter (FsCodec *codec, const gchar *name, const gchar *value);
Finds the FsCodecParameter in the FsCodec that has the requested name
and, if not NULL
, the requested value
|
a FsCodec |
|
The name of the parameter to search for |
|
The value of the parameter to search for or NULL for any value
|
Returns : |
the FsCodecParameter from the FsCodec or NULL
|
#define FS_CODEC_FORMAT "%d: %s %s clock:%d channels:%d params:%p"
A format that can be used in printf like format strings to format a FsCodec
#define FS_CODEC_ARGS(codec)
Formats the codec in args for FS_CODEC_FORMAT
|
a FsCodec |
const gchar * fs_media_type_to_string (FsMediaType media_type);
Gives a user-printable string representing the media type
|
A media type |
Returns : |
a static string representing the media type |