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speex.h File Reference
Data Structures | Typedefs | Functions | Variables

speex.h File Reference

Describes the different modes of the codec. More...

Go to the source code of this file.

Data Structures

struct  SpeexMode
 Struct defining a Speex mode. More...

Typedefs

typedef void *(* encoder_init_func )(const struct SpeexMode *mode)
 Encoder state initialization function.
typedef void(* encoder_destroy_func )(void *st)
 Encoder state destruction function.
typedef int(* encode_func )(void *state, void *in, SpeexBits *bits)
 Main encoding function.
typedef int(* encoder_ctl_func )(void *state, int request, void *ptr)
 Function for controlling the encoder options.
typedef void *(* decoder_init_func )(const struct SpeexMode *mode)
 Decoder state initialization function.
typedef void(* decoder_destroy_func )(void *st)
 Decoder state destruction function.
typedef int(* decode_func )(void *state, SpeexBits *bits, void *out)
 Main decoding function.
typedef int(* decoder_ctl_func )(void *state, int request, void *ptr)
 Function for controlling the decoder options.
typedef int(* mode_query_func )(const void *mode, int request, void *ptr)
 Query function for a mode.
typedef struct SpeexMode SpeexMode
 Struct defining a Speex mode.

Functions

void * speex_encoder_init (const SpeexMode *mode)
 Returns a handle to a newly created Speex encoder state structure.
void speex_encoder_destroy (void *state)
 Frees all resources associated to an existing Speex encoder state.
int speex_encode (void *state, float *in, SpeexBits *bits)
 Uses an existing encoder state to encode one frame of speech pointed to by "in".
int speex_encode_int (void *state, spx_int16_t *in, SpeexBits *bits)
 Uses an existing encoder state to encode one frame of speech pointed to by "in".
int speex_encoder_ctl (void *state, int request, void *ptr)
 Used like the ioctl function to control the encoder parameters.
void * speex_decoder_init (const SpeexMode *mode)
 Returns a handle to a newly created decoder state structure.
void speex_decoder_destroy (void *state)
 Frees all resources associated to an existing decoder state.
int speex_decode (void *state, SpeexBits *bits, float *out)
 Uses an existing decoder state to decode one frame of speech from bit-stream bits.
int speex_decode_int (void *state, SpeexBits *bits, spx_int16_t *out)
 Uses an existing decoder state to decode one frame of speech from bit-stream bits.
int speex_decoder_ctl (void *state, int request, void *ptr)
 Used like the ioctl function to control the encoder parameters.
int speex_mode_query (const SpeexMode *mode, int request, void *ptr)
 Query function for mode information.
int speex_lib_ctl (int request, void *ptr)
 Functions for controlling the behavior of libspeex.
const SpeexMode * speex_lib_get_mode (int mode)
 Obtain one of the modes available.

Variables

const SpeexMode speex_nb_mode
 Default narrowband mode.
const SpeexMode speex_wb_mode
 Default wideband mode.
const SpeexMode speex_uwb_mode
 Default "ultra-wideband" mode.
const SpeexMode speex_nb_48k_mode
 4.8 kbps narrowband mode
const SpeexMode *const speex_mode_list [SPEEX_NB_MODES]
 List of all modes available.

Detailed Description

Describes the different modes of the codec.

Definition in file speex.h.

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