mirror of
https://github.com/godotengine/godot.git
synced 2025-11-03 23:21:15 +00:00
132 lines
5.6 KiB
C
132 lines
5.6 KiB
C
/***********************************************************************
|
|
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
|
|
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 Internet Society, IETF or IETF Trust, nor the
|
|
names of specific 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 COPYRIGHT OWNER 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 SILK_STRUCTS_FLP_H
|
|
#define SILK_STRUCTS_FLP_H
|
|
|
|
#include "opus/silk/typedef.h"
|
|
#include "opus/silk/main.h"
|
|
#include "opus/silk/structs.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C"
|
|
{
|
|
#endif
|
|
|
|
/********************************/
|
|
/* Noise shaping analysis state */
|
|
/********************************/
|
|
typedef struct {
|
|
opus_int8 LastGainIndex;
|
|
silk_float HarmBoost_smth;
|
|
silk_float HarmShapeGain_smth;
|
|
silk_float Tilt_smth;
|
|
} silk_shape_state_FLP;
|
|
|
|
/********************************/
|
|
/* Prefilter state */
|
|
/********************************/
|
|
typedef struct {
|
|
silk_float sLTP_shp[ LTP_BUF_LENGTH ];
|
|
silk_float sAR_shp[ MAX_SHAPE_LPC_ORDER + 1 ];
|
|
opus_int sLTP_shp_buf_idx;
|
|
silk_float sLF_AR_shp;
|
|
silk_float sLF_MA_shp;
|
|
silk_float sHarmHP;
|
|
opus_int32 rand_seed;
|
|
opus_int lagPrev;
|
|
} silk_prefilter_state_FLP;
|
|
|
|
/********************************/
|
|
/* Encoder state FLP */
|
|
/********************************/
|
|
typedef struct {
|
|
silk_encoder_state sCmn; /* Common struct, shared with fixed-point code */
|
|
silk_shape_state_FLP sShape; /* Noise shaping state */
|
|
silk_prefilter_state_FLP sPrefilt; /* Prefilter State */
|
|
|
|
/* Buffer for find pitch and noise shape analysis */
|
|
silk_float x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ];/* Buffer for find pitch and noise shape analysis */
|
|
silk_float LTPCorr; /* Normalized correlation from pitch lag estimator */
|
|
} silk_encoder_state_FLP;
|
|
|
|
/************************/
|
|
/* Encoder control FLP */
|
|
/************************/
|
|
typedef struct {
|
|
/* Prediction and coding parameters */
|
|
silk_float Gains[ MAX_NB_SUBFR ];
|
|
silk_float PredCoef[ 2 ][ MAX_LPC_ORDER ]; /* holds interpolated and final coefficients */
|
|
silk_float LTPCoef[LTP_ORDER * MAX_NB_SUBFR];
|
|
silk_float LTP_scale;
|
|
opus_int pitchL[ MAX_NB_SUBFR ];
|
|
|
|
/* Noise shaping parameters */
|
|
silk_float AR1[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ];
|
|
silk_float AR2[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ];
|
|
silk_float LF_MA_shp[ MAX_NB_SUBFR ];
|
|
silk_float LF_AR_shp[ MAX_NB_SUBFR ];
|
|
silk_float GainsPre[ MAX_NB_SUBFR ];
|
|
silk_float HarmBoost[ MAX_NB_SUBFR ];
|
|
silk_float Tilt[ MAX_NB_SUBFR ];
|
|
silk_float HarmShapeGain[ MAX_NB_SUBFR ];
|
|
silk_float Lambda;
|
|
silk_float input_quality;
|
|
silk_float coding_quality;
|
|
|
|
/* Measures */
|
|
silk_float sparseness;
|
|
silk_float predGain;
|
|
silk_float LTPredCodGain;
|
|
silk_float ResNrg[ MAX_NB_SUBFR ]; /* Residual energy per subframe */
|
|
|
|
/* Parameters for CBR mode */
|
|
opus_int32 GainsUnq_Q16[ MAX_NB_SUBFR ];
|
|
opus_int8 lastGainIndexPrev;
|
|
} silk_encoder_control_FLP;
|
|
|
|
/************************/
|
|
/* Encoder Super Struct */
|
|
/************************/
|
|
typedef struct {
|
|
silk_encoder_state_FLP state_Fxx[ ENCODER_NUM_CHANNELS ];
|
|
stereo_enc_state sStereo;
|
|
opus_int32 nBitsUsedLBRR;
|
|
opus_int32 nBitsExceeded;
|
|
opus_int nChannelsAPI;
|
|
opus_int nChannelsInternal;
|
|
opus_int nPrevChannelsInternal;
|
|
opus_int timeSinceSwitchAllowed_ms;
|
|
opus_int allowBandwidthSwitch;
|
|
opus_int prev_decode_only_middle;
|
|
} silk_encoder;
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|