mpf_codec_descriptor.h File Reference

MPF Codec Descriptor. More...

#include <apr_tables.h>
#include "apt_string.h"
#include "mpf.h"

Go to the source code of this file.

Data Structures
struct	mpf_codec_descriptor_t
struct	mpf_codec_list_t
struct	mpf_codec_attribs_t
struct	mpf_codec_capabilities_t
struct	mpf_codec_frame_t
Defines
#define	CODEC_FRAME_TIME_BASE   10
#define	BYTES_PER_SAMPLE   2
#define	BITS_PER_SAMPLE   16
Typedefs
typedef struct mpf_codec_descriptor_t	mpf_codec_descriptor_t
typedef struct mpf_codec_attribs_t	mpf_codec_attribs_t
typedef struct mpf_codec_list_t	mpf_codec_list_t
typedef struct mpf_codec_capabilities_t	mpf_codec_capabilities_t
typedef struct mpf_codec_frame_t	mpf_codec_frame_t
Enumerations
enum	mpf_sample_rates_e {   MPF_SAMPLE_RATE_NONE = 0x00, MPF_SAMPLE_RATE_8000 = 0x01, MPF_SAMPLE_RATE_16000 = 0x02, MPF_SAMPLE_RATE_32000 = 0x04,   MPF_SAMPLE_RATE_48000 = 0x08, MPF_SAMPLE_RATE_SUPPORTED }
Functions
mpf_codec_descriptor_t *	mpf_codec_lpcm_descriptor_create (apr_uint16_t sampling_rate, apr_byte_t channel_count, apr_pool_t *pool)
mpf_codec_descriptor_t *	mpf_codec_descriptor_create_by_capabilities (const mpf_codec_capabilities_t *capabilities, const mpf_codec_descriptor_t *peer, apr_pool_t *pool)
apt_bool_t	mpf_codec_descriptors_match (const mpf_codec_descriptor_t *descriptor1, const mpf_codec_descriptor_t *descriptor2)
apt_bool_t	mpf_codec_lpcm_descriptor_match (const mpf_codec_descriptor_t *descriptor)
apt_bool_t	mpf_codec_descriptor_match_by_attribs (mpf_codec_descriptor_t *descriptor, const mpf_codec_descriptor_t *static_descriptor, const mpf_codec_attribs_t *attribs)
apt_bool_t	mpf_codec_default_capabilities_add (mpf_codec_capabilities_t *capabilities)
mpf_codec_descriptor_t *	mpf_codec_list_descriptor_find (const mpf_codec_list_t *codec_list, const mpf_codec_descriptor_t *descriptor)
apt_bool_t	mpf_codec_list_modify (mpf_codec_list_t *codec_list, const mpf_codec_capabilities_t *capabilities)
apt_bool_t	mpf_codec_lists_intersect (mpf_codec_list_t *codec_list1, mpf_codec_list_t *codec_list2)
int	mpf_sample_rate_mask_get (apr_uint16_t sampling_rate)

---

Detailed Description

MPF Codec Descriptor.

---

Define Documentation

#define BITS_PER_SAMPLE   16

Bits per sample for linear pcm

#define BYTES_PER_SAMPLE   2

Bytes per sample for linear pcm

#define CODEC_FRAME_TIME_BASE   10

Codec frame time base in msec

---

Typedef Documentation

typedef struct mpf_codec_attribs_t mpf_codec_attribs_t

Codec attributes declaration

typedef struct mpf_codec_capabilities_t mpf_codec_capabilities_t

Codec capabilities declaration

typedef struct mpf_codec_descriptor_t mpf_codec_descriptor_t

Codec descriptor declaration

typedef struct mpf_codec_frame_t mpf_codec_frame_t

Codec frame declaration

typedef struct mpf_codec_list_t mpf_codec_list_t

Codec list declaration

---

Enumeration Type Documentation

enum mpf_sample_rates_e

Supported sampling rates

---

Function Documentation

apt_bool_t mpf_codec_default_capabilities_add

(

mpf_codec_capabilities_t *

capabilities

)

Add default (liear PCM) capabilities

mpf_codec_descriptor_t* mpf_codec_descriptor_create_by_capabilities	(	const mpf_codec_capabilities_t *	capabilities,
		const mpf_codec_descriptor_t *	peer,
		apr_pool_t *	pool
	)

Create codec descriptor by capabilities

apt_bool_t mpf_codec_descriptor_match_by_attribs	(	mpf_codec_descriptor_t *	descriptor,
		const mpf_codec_descriptor_t *	static_descriptor,
		const mpf_codec_attribs_t *	attribs
	)

Match codec descriptor by attribs specified

apt_bool_t mpf_codec_descriptors_match	(	const mpf_codec_descriptor_t *	descriptor1,
		const mpf_codec_descriptor_t *	descriptor2
	)

Match two codec descriptors

mpf_codec_descriptor_t* mpf_codec_list_descriptor_find	(	const mpf_codec_list_t *	codec_list,
		const mpf_codec_descriptor_t *	descriptor
	)

Find matched descriptor in codec list

apt_bool_t mpf_codec_list_modify	(	mpf_codec_list_t *	codec_list,
		const mpf_codec_capabilities_t *	capabilities
	)

Modify codec list according to capabilities specified

apt_bool_t mpf_codec_lists_intersect	(	mpf_codec_list_t *	codec_list1,
		mpf_codec_list_t *	codec_list2
	)

Intersect two codec lists

mpf_codec_descriptor_t* mpf_codec_lpcm_descriptor_create	(	apr_uint16_t	sampling_rate,
		apr_byte_t	channel_count,
		apr_pool_t *	pool
	)

Create linear PCM descriptor

apt_bool_t mpf_codec_lpcm_descriptor_match

(

const mpf_codec_descriptor_t *

descriptor

)

Match specified codec descriptor and the default lpcm one

int mpf_sample_rate_mask_get

(

apr_uint16_t

sampling_rate

)

Get sampling rate mask (mpf_sample_rate_e) by integer value