pjmedia_vid_codec_factory_op Struct Reference

#include <vid_codec.h>

Data Fields
pj_status_t(*	test_alloc )(pjmedia_vid_codec_factory *factory, const pjmedia_vid_codec_info *info)
pj_status_t(*	default_attr )(pjmedia_vid_codec_factory *factory, const pjmedia_vid_codec_info *info, pjmedia_vid_codec_param *attr)
pj_status_t(*	enum_info )(pjmedia_vid_codec_factory *factory, unsigned *count, pjmedia_vid_codec_info codecs[])
pj_status_t(*	alloc_codec )(pjmedia_vid_codec_factory *factory, const pjmedia_vid_codec_info *info, pjmedia_vid_codec **p_codec)
pj_status_t(*	dealloc_codec )(pjmedia_vid_codec_factory *factory, pjmedia_vid_codec *codec)

Detailed Description

This structure describes operations that must be supported by codec factories.

Field Documentation

test_alloc

pj_status_t(* pjmedia_vid_codec_factory_op::test_alloc) (pjmedia_vid_codec_factory *factory, const pjmedia_vid_codec_info *info)

Check whether the factory can create codec with the specified codec info.

Parameters

factory	The codec factory.
info	The codec info.

Returns

PJ_SUCCESS if this factory is able to create an instance of codec with the specified info.

default_attr

pj_status_t(* pjmedia_vid_codec_factory_op::default_attr) (pjmedia_vid_codec_factory *factory, const pjmedia_vid_codec_info *info, pjmedia_vid_codec_param *attr)

Create default attributes for the specified codec ID. This function can be called by application to get the capability of the codec.

Parameters

factory	The codec factory.
info	The codec info.
attr	The attribute to be initialized.

Returns

PJ_SUCCESS if success.

enum_info

pj_status_t(* pjmedia_vid_codec_factory_op::enum_info) (pjmedia_vid_codec_factory *factory, unsigned *count, pjmedia_vid_codec_info codecs[])

Enumerate supported codecs that can be created using this factory.

Parameters

factory	The codec factory.
count	On input, specifies the number of elements in the array. On output, the value will be set to the number of elements that have been initialized by this function.
info	The codec info array, which contents will be initialized upon return.

Returns

PJ_SUCCESS on success.

alloc_codec

pj_status_t(* pjmedia_vid_codec_factory_op::alloc_codec) (pjmedia_vid_codec_factory *factory, const pjmedia_vid_codec_info *info, pjmedia_vid_codec **p_codec)

Create one instance of the codec with the specified codec info.

Parameters

factory	The codec factory.
info	The codec info.
p_codec	Pointer to receive the codec instance.

Returns

PJ_SUCCESS on success.

dealloc_codec

pj_status_t(* pjmedia_vid_codec_factory_op::dealloc_codec) (pjmedia_vid_codec_factory *factory, pjmedia_vid_codec *codec)

This function is called by codec manager to return a particular instance of codec back to the codec factory.

Parameters

factory	The codec factory.
codec	The codec instance to be returned.

Returns

PJ_SUCCESS on success.

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The documentation for this struct was generated from the following file:

• vid_codec.h