mirror of
https://github.com/oxen-io/session-android.git
synced 2024-12-21 07:27:30 +00:00
425 lines
14 KiB
C
425 lines
14 KiB
C
/* Copyright (C) 2002-2006 Jean-Marc Valin*/
|
|
/**
|
|
@file speex.h
|
|
@brief Describes the different modes of the codec
|
|
*/
|
|
/*
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
- Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
|
|
- Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
- Neither the name of the Xiph.org Foundation nor the names of its
|
|
contributors may be used to endorse or promote products derived from
|
|
this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
|
|
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
#ifndef SPEEX_H
|
|
#define SPEEX_H
|
|
/** @defgroup Codec Speex encoder and decoder
|
|
* This is the Speex codec itself.
|
|
* @{
|
|
*/
|
|
|
|
#include "speex/speex_bits.h"
|
|
#include "speex/speex_types.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Values allowed for *ctl() requests */
|
|
|
|
/** Set enhancement on/off (decoder only) */
|
|
#define SPEEX_SET_ENH 0
|
|
/** Get enhancement state (decoder only) */
|
|
#define SPEEX_GET_ENH 1
|
|
|
|
/*Would be SPEEX_SET_FRAME_SIZE, but it's (currently) invalid*/
|
|
/** Obtain frame size used by encoder/decoder */
|
|
#define SPEEX_GET_FRAME_SIZE 3
|
|
|
|
/** Set quality value */
|
|
#define SPEEX_SET_QUALITY 4
|
|
/** Get current quality setting */
|
|
/* #define SPEEX_GET_QUALITY 5 -- Doesn't make much sense, does it? */
|
|
|
|
/** Set sub-mode to use */
|
|
#define SPEEX_SET_MODE 6
|
|
/** Get current sub-mode in use */
|
|
#define SPEEX_GET_MODE 7
|
|
|
|
/** Set low-band sub-mode to use (wideband only)*/
|
|
#define SPEEX_SET_LOW_MODE 8
|
|
/** Get current low-band mode in use (wideband only)*/
|
|
#define SPEEX_GET_LOW_MODE 9
|
|
|
|
/** Set high-band sub-mode to use (wideband only)*/
|
|
#define SPEEX_SET_HIGH_MODE 10
|
|
/** Get current high-band mode in use (wideband only)*/
|
|
#define SPEEX_GET_HIGH_MODE 11
|
|
|
|
/** Set VBR on (1) or off (0) */
|
|
#define SPEEX_SET_VBR 12
|
|
/** Get VBR status (1 for on, 0 for off) */
|
|
#define SPEEX_GET_VBR 13
|
|
|
|
/** Set quality value for VBR encoding (0-10) */
|
|
#define SPEEX_SET_VBR_QUALITY 14
|
|
/** Get current quality value for VBR encoding (0-10) */
|
|
#define SPEEX_GET_VBR_QUALITY 15
|
|
|
|
/** Set complexity of the encoder (0-10) */
|
|
#define SPEEX_SET_COMPLEXITY 16
|
|
/** Get current complexity of the encoder (0-10) */
|
|
#define SPEEX_GET_COMPLEXITY 17
|
|
|
|
/** Set bit-rate used by the encoder (or lower) */
|
|
#define SPEEX_SET_BITRATE 18
|
|
/** Get current bit-rate used by the encoder or decoder */
|
|
#define SPEEX_GET_BITRATE 19
|
|
|
|
/** Define a handler function for in-band Speex request*/
|
|
#define SPEEX_SET_HANDLER 20
|
|
|
|
/** Define a handler function for in-band user-defined request*/
|
|
#define SPEEX_SET_USER_HANDLER 22
|
|
|
|
/** Set sampling rate used in bit-rate computation */
|
|
#define SPEEX_SET_SAMPLING_RATE 24
|
|
/** Get sampling rate used in bit-rate computation */
|
|
#define SPEEX_GET_SAMPLING_RATE 25
|
|
|
|
/** Reset the encoder/decoder memories to zero*/
|
|
#define SPEEX_RESET_STATE 26
|
|
|
|
/** Get VBR info (mostly used internally) */
|
|
#define SPEEX_GET_RELATIVE_QUALITY 29
|
|
|
|
/** Set VAD status (1 for on, 0 for off) */
|
|
#define SPEEX_SET_VAD 30
|
|
|
|
/** Get VAD status (1 for on, 0 for off) */
|
|
#define SPEEX_GET_VAD 31
|
|
|
|
/** Set Average Bit-Rate (ABR) to n bits per seconds */
|
|
#define SPEEX_SET_ABR 32
|
|
/** Get Average Bit-Rate (ABR) setting (in bps) */
|
|
#define SPEEX_GET_ABR 33
|
|
|
|
/** Set DTX status (1 for on, 0 for off) */
|
|
#define SPEEX_SET_DTX 34
|
|
/** Get DTX status (1 for on, 0 for off) */
|
|
#define SPEEX_GET_DTX 35
|
|
|
|
/** Set submode encoding in each frame (1 for yes, 0 for no, setting to no breaks the standard) */
|
|
#define SPEEX_SET_SUBMODE_ENCODING 36
|
|
/** Get submode encoding in each frame */
|
|
#define SPEEX_GET_SUBMODE_ENCODING 37
|
|
|
|
/*#define SPEEX_SET_LOOKAHEAD 38*/
|
|
/** Returns the lookahead used by Speex */
|
|
#define SPEEX_GET_LOOKAHEAD 39
|
|
|
|
/** Sets tuning for packet-loss concealment (expected loss rate) */
|
|
#define SPEEX_SET_PLC_TUNING 40
|
|
/** Gets tuning for PLC */
|
|
#define SPEEX_GET_PLC_TUNING 41
|
|
|
|
/** Sets the max bit-rate allowed in VBR mode */
|
|
#define SPEEX_SET_VBR_MAX_BITRATE 42
|
|
/** Gets the max bit-rate allowed in VBR mode */
|
|
#define SPEEX_GET_VBR_MAX_BITRATE 43
|
|
|
|
/** Turn on/off input/output high-pass filtering */
|
|
#define SPEEX_SET_HIGHPASS 44
|
|
/** Get status of input/output high-pass filtering */
|
|
#define SPEEX_GET_HIGHPASS 45
|
|
|
|
/** Get "activity level" of the last decoded frame, i.e.
|
|
how much damage we cause if we remove the frame */
|
|
#define SPEEX_GET_ACTIVITY 47
|
|
|
|
|
|
/* Preserving compatibility:*/
|
|
/** Equivalent to SPEEX_SET_ENH */
|
|
#define SPEEX_SET_PF 0
|
|
/** Equivalent to SPEEX_GET_ENH */
|
|
#define SPEEX_GET_PF 1
|
|
|
|
|
|
|
|
|
|
/* Values allowed for mode queries */
|
|
/** Query the frame size of a mode */
|
|
#define SPEEX_MODE_FRAME_SIZE 0
|
|
|
|
/** Query the size of an encoded frame for a particular sub-mode */
|
|
#define SPEEX_SUBMODE_BITS_PER_FRAME 1
|
|
|
|
|
|
|
|
/** Get major Speex version */
|
|
#define SPEEX_LIB_GET_MAJOR_VERSION 1
|
|
/** Get minor Speex version */
|
|
#define SPEEX_LIB_GET_MINOR_VERSION 3
|
|
/** Get micro Speex version */
|
|
#define SPEEX_LIB_GET_MICRO_VERSION 5
|
|
/** Get extra Speex version */
|
|
#define SPEEX_LIB_GET_EXTRA_VERSION 7
|
|
/** Get Speex version string */
|
|
#define SPEEX_LIB_GET_VERSION_STRING 9
|
|
|
|
/*#define SPEEX_LIB_SET_ALLOC_FUNC 10
|
|
#define SPEEX_LIB_GET_ALLOC_FUNC 11
|
|
#define SPEEX_LIB_SET_FREE_FUNC 12
|
|
#define SPEEX_LIB_GET_FREE_FUNC 13
|
|
|
|
#define SPEEX_LIB_SET_WARNING_FUNC 14
|
|
#define SPEEX_LIB_GET_WARNING_FUNC 15
|
|
#define SPEEX_LIB_SET_ERROR_FUNC 16
|
|
#define SPEEX_LIB_GET_ERROR_FUNC 17
|
|
*/
|
|
|
|
/** Number of defined modes in Speex */
|
|
#define SPEEX_NB_MODES 3
|
|
|
|
/** modeID for the defined narrowband mode */
|
|
#define SPEEX_MODEID_NB 0
|
|
|
|
/** modeID for the defined wideband mode */
|
|
#define SPEEX_MODEID_WB 1
|
|
|
|
/** modeID for the defined ultra-wideband mode */
|
|
#define SPEEX_MODEID_UWB 2
|
|
|
|
struct SpeexMode;
|
|
|
|
|
|
/* Prototypes for mode function pointers */
|
|
|
|
/** Encoder state initialization function */
|
|
typedef void *(*encoder_init_func)(const struct SpeexMode *mode);
|
|
|
|
/** Encoder state destruction function */
|
|
typedef void (*encoder_destroy_func)(void *st);
|
|
|
|
/** Main encoding function */
|
|
typedef int (*encode_func)(void *state, void *in, SpeexBits *bits);
|
|
|
|
/** Function for controlling the encoder options */
|
|
typedef int (*encoder_ctl_func)(void *state, int request, void *ptr);
|
|
|
|
/** Decoder state initialization function */
|
|
typedef void *(*decoder_init_func)(const struct SpeexMode *mode);
|
|
|
|
/** Decoder state destruction function */
|
|
typedef void (*decoder_destroy_func)(void *st);
|
|
|
|
/** Main decoding function */
|
|
typedef int (*decode_func)(void *state, SpeexBits *bits, void *out);
|
|
|
|
/** Function for controlling the decoder options */
|
|
typedef int (*decoder_ctl_func)(void *state, int request, void *ptr);
|
|
|
|
|
|
/** Query function for a mode */
|
|
typedef int (*mode_query_func)(const void *mode, int request, void *ptr);
|
|
|
|
/** Struct defining a Speex mode */
|
|
typedef struct SpeexMode {
|
|
/** Pointer to the low-level mode data */
|
|
const void *mode;
|
|
|
|
/** Pointer to the mode query function */
|
|
mode_query_func query;
|
|
|
|
/** The name of the mode (you should not rely on this to identify the mode)*/
|
|
const char *modeName;
|
|
|
|
/**ID of the mode*/
|
|
int modeID;
|
|
|
|
/**Version number of the bitstream (incremented every time we break
|
|
bitstream compatibility*/
|
|
int bitstream_version;
|
|
|
|
/** Pointer to encoder initialization function */
|
|
encoder_init_func enc_init;
|
|
|
|
/** Pointer to encoder destruction function */
|
|
encoder_destroy_func enc_destroy;
|
|
|
|
/** Pointer to frame encoding function */
|
|
encode_func enc;
|
|
|
|
/** Pointer to decoder initialization function */
|
|
decoder_init_func dec_init;
|
|
|
|
/** Pointer to decoder destruction function */
|
|
decoder_destroy_func dec_destroy;
|
|
|
|
/** Pointer to frame decoding function */
|
|
decode_func dec;
|
|
|
|
/** ioctl-like requests for encoder */
|
|
encoder_ctl_func enc_ctl;
|
|
|
|
/** ioctl-like requests for decoder */
|
|
decoder_ctl_func dec_ctl;
|
|
|
|
} SpeexMode;
|
|
|
|
/**
|
|
* Returns a handle to a newly created Speex encoder state structure. For now,
|
|
* the "mode" argument can be &nb_mode or &wb_mode . In the future, more modes
|
|
* may be added. Note that for now if you have more than one channels to
|
|
* encode, you need one state per channel.
|
|
*
|
|
* @param mode The mode to use (either speex_nb_mode or speex_wb.mode)
|
|
* @return A newly created encoder state or NULL if state allocation fails
|
|
*/
|
|
void *speex_encoder_init(const SpeexMode *mode);
|
|
|
|
/** Frees all resources associated to an existing Speex encoder state.
|
|
* @param state Encoder state to be destroyed */
|
|
void speex_encoder_destroy(void *state);
|
|
|
|
/** Uses an existing encoder state to encode one frame of speech pointed to by
|
|
"in". The encoded bit-stream is saved in "bits".
|
|
@param state Encoder state
|
|
@param in Frame that will be encoded with a +-2^15 range. This data MAY be
|
|
overwritten by the encoder and should be considered uninitialised
|
|
after the call.
|
|
@param bits Bit-stream where the data will be written
|
|
@return 0 if frame needs not be transmitted (DTX only), 1 otherwise
|
|
*/
|
|
int speex_encode(void *state, float *in, SpeexBits *bits);
|
|
|
|
/** Uses an existing encoder state to encode one frame of speech pointed to by
|
|
"in". The encoded bit-stream is saved in "bits".
|
|
@param state Encoder state
|
|
@param in Frame that will be encoded with a +-2^15 range
|
|
@param bits Bit-stream where the data will be written
|
|
@return 0 if frame needs not be transmitted (DTX only), 1 otherwise
|
|
*/
|
|
int speex_encode_int(void *state, spx_int16_t *in, SpeexBits *bits);
|
|
|
|
/** Used like the ioctl function to control the encoder parameters
|
|
*
|
|
* @param state Encoder state
|
|
* @param request ioctl-type request (one of the SPEEX_* macros)
|
|
* @param ptr Data exchanged to-from function
|
|
* @return 0 if no error, -1 if request in unknown, -2 for invalid parameter
|
|
*/
|
|
int speex_encoder_ctl(void *state, int request, void *ptr);
|
|
|
|
|
|
/** Returns a handle to a newly created decoder state structure. For now,
|
|
* the mode argument can be &nb_mode or &wb_mode . In the future, more modes
|
|
* may be added. Note that for now if you have more than one channels to
|
|
* decode, you need one state per channel.
|
|
*
|
|
* @param mode Speex mode (one of speex_nb_mode or speex_wb_mode)
|
|
* @return A newly created decoder state or NULL if state allocation fails
|
|
*/
|
|
void *speex_decoder_init(const SpeexMode *mode);
|
|
|
|
/** Frees all resources associated to an existing decoder state.
|
|
*
|
|
* @param state State to be destroyed
|
|
*/
|
|
void speex_decoder_destroy(void *state);
|
|
|
|
/** Uses an existing decoder state to decode one frame of speech from
|
|
* bit-stream bits. The output speech is saved written to out.
|
|
*
|
|
* @param state Decoder state
|
|
* @param bits Bit-stream from which to decode the frame (NULL if the packet was lost)
|
|
* @param out Where to write the decoded frame
|
|
* @return return status (0 for no error, -1 for end of stream, -2 corrupt stream)
|
|
*/
|
|
int speex_decode(void *state, SpeexBits *bits, float *out);
|
|
|
|
/** Uses an existing decoder state to decode one frame of speech from
|
|
* bit-stream bits. The output speech is saved written to out.
|
|
*
|
|
* @param state Decoder state
|
|
* @param bits Bit-stream from which to decode the frame (NULL if the packet was lost)
|
|
* @param out Where to write the decoded frame
|
|
* @return return status (0 for no error, -1 for end of stream, -2 corrupt stream)
|
|
*/
|
|
int speex_decode_int(void *state, SpeexBits *bits, spx_int16_t *out);
|
|
|
|
/** Used like the ioctl function to control the encoder parameters
|
|
*
|
|
* @param state Decoder state
|
|
* @param request ioctl-type request (one of the SPEEX_* macros)
|
|
* @param ptr Data exchanged to-from function
|
|
* @return 0 if no error, -1 if request in unknown, -2 for invalid parameter
|
|
*/
|
|
int speex_decoder_ctl(void *state, int request, void *ptr);
|
|
|
|
|
|
/** Query function for mode information
|
|
*
|
|
* @param mode Speex mode
|
|
* @param request ioctl-type request (one of the SPEEX_* macros)
|
|
* @param ptr Data exchanged to-from function
|
|
* @return 0 if no error, -1 if request in unknown, -2 for invalid parameter
|
|
*/
|
|
int speex_mode_query(const SpeexMode *mode, int request, void *ptr);
|
|
|
|
/** Functions for controlling the behavior of libspeex
|
|
* @param request ioctl-type request (one of the SPEEX_LIB_* macros)
|
|
* @param ptr Data exchanged to-from function
|
|
* @return 0 if no error, -1 if request in unknown, -2 for invalid parameter
|
|
*/
|
|
int speex_lib_ctl(int request, void *ptr);
|
|
|
|
/** Default narrowband mode */
|
|
extern const SpeexMode speex_nb_mode;
|
|
|
|
/** Default wideband mode */
|
|
extern const SpeexMode speex_wb_mode;
|
|
|
|
/** Default "ultra-wideband" mode */
|
|
extern const SpeexMode speex_uwb_mode;
|
|
|
|
/** List of all modes available */
|
|
extern const SpeexMode * const speex_mode_list[SPEEX_NB_MODES];
|
|
|
|
/** Obtain one of the modes available */
|
|
const SpeexMode * speex_lib_get_mode (int mode);
|
|
|
|
#ifndef WIN32
|
|
/* We actually override the function in the narrowband case so that we can avoid linking in the wideband stuff */
|
|
#define speex_lib_get_mode(mode) ((mode)==SPEEX_MODEID_NB ? &speex_nb_mode : speex_lib_get_mode (mode))
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
/** @}*/
|
|
#endif
|