Including config.h from all the SILK files
[opus.git] / silk / silk_structs.h
1 /***********************************************************************
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7 this list of conditions and the following disclaimer.
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9 notice, this list of conditions and the following disclaimer in the
10 documentation and/or other materials provided with the distribution.
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12 contributors, may be used to endorse or promote products derived from
13 this software without specific prior written permission.
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17 BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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26 ***********************************************************************/
27
28 #ifndef SILK_STRUCTS_H
29 #define SILK_STRUCTS_H
30
31 #include "silk_typedef.h"
32 #include "silk_SigProc_FIX.h"
33 #include "silk_define.h"
34 #include "entenc.h"
35 #include "entdec.h"
36
37 #ifdef __cplusplus
38 extern "C"
39 {
40 #endif
41
42 /************************************/
43 /* Noise shaping quantization state */
44 /************************************/
45 typedef struct {
46     opus_int16   xq[           2 * MAX_FRAME_LENGTH ]; /* Buffer for quantized output signal */
47     opus_int32   sLTP_shp_Q10[ 2 * MAX_FRAME_LENGTH ];
48     opus_int32   sLPC_Q14[ MAX_SUB_FRAME_LENGTH + NSQ_LPC_BUF_LENGTH ];
49     opus_int32   sAR2_Q14[ MAX_SHAPE_LPC_ORDER ];
50     opus_int32   sLF_AR_shp_Q12;
51     opus_int     lagPrev;
52     opus_int     sLTP_buf_idx;
53     opus_int     sLTP_shp_buf_idx;
54     opus_int32   rand_seed;
55     opus_int32   prev_inv_gain_Q16;
56     opus_int     rewhite_flag;
57 } silk_nsq_state;
58
59 /********************************/
60 /* VAD state                    */
61 /********************************/
62 typedef struct {
63     opus_int32   AnaState[ 2 ];                  /* Analysis filterbank state: 0-8 kHz                       */
64     opus_int32   AnaState1[ 2 ];                 /* Analysis filterbank state: 0-4 kHz                       */
65     opus_int32   AnaState2[ 2 ];                 /* Analysis filterbank state: 0-2 kHz                       */
66     opus_int32   XnrgSubfr[ VAD_N_BANDS ];       /* Subframe energies                                        */
67     opus_int32   NrgRatioSmth_Q8[ VAD_N_BANDS ]; /* Smoothed energy level in each band                       */
68     opus_int16   HPstate;                        /* State of differentiator in the lowest band               */
69     opus_int32   NL[ VAD_N_BANDS ];              /* Noise energy level in each band                          */
70     opus_int32   inv_NL[ VAD_N_BANDS ];          /* Inverse noise energy level in each band                  */
71     opus_int32   NoiseLevelBias[ VAD_N_BANDS ];  /* Noise level estimator bias/offset                        */
72     opus_int32   counter;                        /* Frame counter used in the initial phase                  */
73 } silk_VAD_state;
74
75 /* Variable cut-off low-pass filter state */
76 typedef struct {
77     opus_int32                   In_LP_State[ 2 ];           /* Low pass filter state */
78     opus_int32                   transition_frame_no;        /* Counter which is mapped to a cut-off frequency */
79     opus_int                     mode;                       /* Operating mode, <0: switch down, >0: switch up; 0: do nothing */
80 } silk_LP_state;
81
82 /* Structure containing NLSF codebook */
83 typedef struct {
84     const opus_int16             nVectors;
85     const opus_int16             order;
86     const opus_int16             quantStepSize_Q16;
87     const opus_int16             invQuantStepSize_Q6;
88     const opus_uint8             *CB1_NLSF_Q8;
89     const opus_uint8             *CB1_iCDF;
90     const opus_uint8             *pred_Q8;
91     const opus_uint8             *ec_sel;
92     const opus_uint8             *ec_iCDF;
93     const opus_uint8             *ec_Rates_Q5;
94     const opus_int16             *deltaMin_Q15;
95 } silk_NLSF_CB_struct;
96
97 typedef struct {
98     opus_int16                   pred_prev_Q13[ 2 ];
99     opus_int16                   sMid[ 2 ];
100     opus_int16                   sSide[ 2 ];
101     opus_int32                   mid_side_amp_Q0[ 4 ];
102     opus_int16                   smth_width_Q14;
103     opus_int16                   width_prev_Q14;
104     opus_int8                    ix[ MAX_FRAMES_PER_PACKET ][ 2 ][ 4 ];
105 } stereo_enc_state;
106
107 typedef struct {
108     opus_int16                   pred_prev_Q13[ 2 ];
109     opus_int16                   sMid[ 2 ];
110     opus_int16                   sSide[ 2 ];
111 } stereo_dec_state;
112
113 typedef struct {
114     opus_int8                    GainsIndices[ MAX_NB_SUBFR ];
115     opus_int8                    LTPIndex[ MAX_NB_SUBFR ];
116     opus_int8                    NLSFIndices[ MAX_LPC_ORDER + 1 ];
117     opus_int16                   lagIndex;
118     opus_int8                    contourIndex;
119     opus_int8                    signalType;
120     opus_int8                    quantOffsetType;
121     opus_int8                    NLSFInterpCoef_Q2;
122     opus_int8                    PERIndex;
123     opus_int8                    LTP_scaleIndex;
124     opus_int8                    Seed;
125 } SideInfoIndices;
126
127 /********************************/
128 /* Encoder state                */
129 /********************************/
130 typedef struct {
131     opus_int32                       In_HP_State[ 2 ];               /* High pass filter state                                               */
132     opus_int32                       variable_HP_smth1_Q15;          /* State of first smoother                                              */
133     opus_int32                       variable_HP_smth2_Q15;          /* State of second smoother                                             */
134     opus_int                         HP_cutoff_Hz;                   /* Fixed cutoff frequency (if zero: adaptive)                           */
135     silk_LP_state                   sLP;                            /* Low pass filter state                                                */
136     silk_VAD_state                  sVAD;                           /* Voice activity detector state                                        */
137     silk_nsq_state                  sNSQ;                           /* Noise Shape Quantizer State                                          */
138     opus_int16                       prev_NLSFq_Q15[ MAX_LPC_ORDER ];/* Previously quantized NLSF vector                                     */
139     opus_int                         speech_activity_Q8;             /* Speech activity                                                      */
140     opus_int                         allow_bandwidth_switch;         /* Flag indicating that switching of internal bandwidth is allowed      */
141     opus_int8                        LBRRprevLastGainIndex;
142     opus_int8                        prevSignalType;
143     opus_int                         prevLag;
144     opus_int                         pitch_LPC_win_length;
145     opus_int                         max_pitch_lag;                  /* Highest possible pitch lag (samples)                                 */
146     opus_int32                       API_fs_Hz;                      /* API sampling frequency (Hz)                                          */
147     opus_int32                       prev_API_fs_Hz;                 /* Previous API sampling frequency (Hz)                                 */
148     opus_int                         maxInternal_fs_Hz;              /* Maximum internal sampling frequency (Hz)                             */
149     opus_int                         minInternal_fs_Hz;              /* Minimum internal sampling frequency (Hz)                             */
150     opus_int                         desiredInternal_fs_Hz;          /* Soft request for internal sampling frequency (Hz)                    */
151     opus_int                         fs_kHz;                         /* Internal sampling frequency (kHz)                                    */
152     opus_int                         nb_subfr;                       /* Number of 5 ms subframes in a frame                                  */
153     opus_int                         frame_length;                   /* Frame length (samples)                                               */
154     opus_int                         subfr_length;                   /* Subframe length (samples)                                            */
155     opus_int                         ltp_mem_length;                 /* Length of LTP memory                                                 */
156     opus_int                         la_pitch;                       /* Look-ahead for pitch analysis (samples)                              */
157     opus_int                         la_shape;                       /* Look-ahead for noise shape analysis (samples)                        */
158     opus_int                         shapeWinLength;                 /* Window length for noise shape analysis (samples)                     */
159     opus_int32                       TargetRate_bps;                 /* Target bitrate (bps)                                                 */
160     opus_int                         PacketSize_ms;                  /* Number of milliseconds to put in each packet                         */
161     opus_int                         PacketLoss_perc;                /* Packet loss rate measured by farend                                  */
162     opus_int32                       frameCounter;
163     opus_int                         Complexity;                     /* Complexity setting                                                   */
164     opus_int                         nStatesDelayedDecision;         /* Number of states in delayed decision quantization                    */
165     opus_int                         useInterpolatedNLSFs;           /* Flag for using NLSF interpolation                                    */
166     opus_int                         shapingLPCOrder;                /* Filter order for noise shaping filters                               */
167     opus_int                         predictLPCOrder;                /* Filter order for prediction filters                                  */
168     opus_int                         pitchEstimationComplexity;      /* Complexity level for pitch estimator                                 */
169     opus_int                         pitchEstimationLPCOrder;        /* Whitening filter order for pitch estimator                           */
170     opus_int32                       pitchEstimationThreshold_Q16;   /* Threshold for pitch estimator                                        */
171     opus_int                         LTPQuantLowComplexity;          /* Flag for low complexity LTP quantization                             */
172     opus_int                         mu_LTP_Q9;                      /* Rate-distortion tradeoff in LTP quantization                         */
173     opus_int                         NLSF_MSVQ_Survivors;            /* Number of survivors in NLSF MSVQ                                     */
174     opus_int                         first_frame_after_reset;        /* Flag for deactivating NLSF interp. and fluc. reduction after resets  */
175     opus_int                         controlled_since_last_payload;  /* Flag for ensuring codec_control only runs once per packet            */
176     opus_int                         warping_Q16;                    /* Warping parameter for warped noise shaping                           */
177     opus_int                         useCBR;                         /* Flag to enable constant bitrate                                      */
178     opus_int                         prefillFlag;                    /* Flag to indicate that only buffers are prefilled, no coding          */
179     const opus_uint8                 *pitch_lag_low_bits_iCDF;       /* Pointer to iCDF table for low bits of pitch lag index                */
180     const opus_uint8                 *pitch_contour_iCDF;            /* Pointer to iCDF table for pitch contour index                        */
181     const silk_NLSF_CB_struct       *psNLSF_CB;                     /* Pointer to NLSF codebook                                             */
182     opus_int                         input_quality_bands_Q15[ VAD_N_BANDS ];
183     opus_int                         input_tilt_Q15;
184     opus_int                         SNR_dB_Q7;                      /* Quality setting                                                      */
185
186     opus_int8                        VAD_flags[ MAX_FRAMES_PER_PACKET ];
187     opus_int8                        LBRR_flag;
188     opus_int                         LBRR_flags[ MAX_FRAMES_PER_PACKET ];
189
190     SideInfoIndices                 indices;
191     opus_int8                        pulses[ MAX_FRAME_LENGTH ];
192
193     /* Input/output buffering */
194     opus_int16                       inputBuf__[ MAX_FRAME_LENGTH + 2 ]; /* Buffer containing input signal                                   */
195     opus_int16                       *inputBuf;                      /* Points to second element of above buffer                             */
196     opus_int                         inputBufIx;
197     opus_int                         nFramesPerPacket;
198     opus_int                         nFramesEncoded;                 /* Number of frames analyzed in current packet                          */
199
200     opus_int                         nChannelsAPI;
201     opus_int                         nChannelsInternal;
202     opus_int                         channelNb;
203
204     /* Parameters For LTP scaling Control */
205     opus_int                         frames_since_onset;
206
207     /* Specifically for entropy coding */
208     opus_int                         ec_prevSignalType;
209     opus_int16                       ec_prevLagIndex;
210
211     silk_resampler_state_struct resampler_state;
212
213     /* DTX */
214     opus_int                         useDTX;                         /* Flag to enable DTX                                                   */
215     opus_int                         inDTX;                          /* Flag to signal DTX period                                            */
216     opus_int                         noSpeechCounter;                /* Counts concecutive nonactive frames, used by DTX                     */
217
218     /* Inband Low Bitrate Redundancy (LBRR) data */
219     opus_int                         useInBandFEC;                   /* Saves the API setting for query                                      */
220     opus_int                         LBRR_enabled;                   /* Depends on useInBandFRC, bitrate and packet loss rate                */
221     opus_int                         LBRR_GainIncreases;             /* Gains increment for coding LBRR frames                               */
222     SideInfoIndices                 indices_LBRR[ MAX_FRAMES_PER_PACKET ];
223     opus_int8                        pulses_LBRR[ MAX_FRAMES_PER_PACKET ][ MAX_FRAME_LENGTH ];
224 } silk_encoder_state;
225
226
227 /* Struct for Packet Loss Concealment */
228 typedef struct {
229     opus_int32   pitchL_Q8;                      /* Pitch lag to use for voiced concealment                  */
230     opus_int16   LTPCoef_Q14[ LTP_ORDER ];       /* LTP coeficients to use for voiced concealment            */
231     opus_int16   prevLPC_Q12[ MAX_LPC_ORDER ];
232     opus_int     last_frame_lost;                /* Was previous frame lost                                  */
233     opus_int32   rand_seed;                      /* Seed for unvoiced signal generation                      */
234     opus_int16   randScale_Q14;                  /* Scaling of unvoiced random signal                        */
235     opus_int32   conc_energy;
236     opus_int     conc_energy_shift;
237     opus_int16   prevLTP_scale_Q14;
238     opus_int32   prevGain_Q16[ MAX_NB_SUBFR ];
239     opus_int     fs_kHz;
240 } silk_PLC_struct;
241
242 /* Struct for CNG */
243 typedef struct {
244     opus_int32   CNG_exc_buf_Q10[ MAX_FRAME_LENGTH ];
245     opus_int16   CNG_smth_NLSF_Q15[ MAX_LPC_ORDER ];
246     opus_int32   CNG_synth_state[ MAX_LPC_ORDER ];
247     opus_int32   CNG_smth_Gain_Q16;
248     opus_int32   rand_seed;
249     opus_int     fs_kHz;
250 } silk_CNG_struct;
251
252 /********************************/
253 /* Decoder state                */
254 /********************************/
255 typedef struct {
256     opus_int32       prev_inv_gain_Q16;
257     opus_int32       sLTP_Q16[ 2 * MAX_FRAME_LENGTH ];
258     opus_int32       sLPC_Q14[ MAX_SUB_FRAME_LENGTH + MAX_LPC_ORDER ];
259     opus_int32       exc_Q10[ MAX_FRAME_LENGTH ];
260     opus_int16       outBuf[ 2 * MAX_FRAME_LENGTH ];             /* Buffer for output signal                                             */
261     opus_int         lagPrev;                                    /* Previous Lag                                                         */
262     opus_int8        LastGainIndex;                              /* Previous gain index                                                  */
263     opus_int         fs_kHz;                                     /* Sampling frequency in kHz                                            */
264     opus_int32       prev_API_sampleRate;                        /* Previous API sample frequency (Hz)                                   */
265     opus_int         nb_subfr;                                   /* Number of 5 ms subframes in a frame                                  */
266     opus_int         frame_length;                               /* Frame length (samples)                                               */
267     opus_int         subfr_length;                               /* Subframe length (samples)                                            */
268     opus_int         ltp_mem_length;                             /* Length of LTP memory                                                 */
269     opus_int         LPC_order;                                  /* LPC order                                                            */
270     opus_int16       prevNLSF_Q15[ MAX_LPC_ORDER ];              /* Used to interpolate LSFs                                             */
271     opus_int         first_frame_after_reset;                    /* Flag for deactivating NLSF interp. and fluc. reduction after resets  */
272     const opus_uint8 *pitch_lag_low_bits_iCDF;                   /* Pointer to iCDF table for low bits of pitch lag index                */
273     const opus_uint8 *pitch_contour_iCDF;                        /* Pointer to iCDF table for pitch contour index                        */
274
275     /* For buffering payload in case of more frames per packet */
276     opus_int         nFramesDecoded;
277     opus_int         nFramesPerPacket;
278
279     /* Specifically for entropy coding */
280     opus_int         ec_prevSignalType;
281     opus_int16       ec_prevLagIndex;
282
283     opus_int         VAD_flags[ MAX_FRAMES_PER_PACKET ];
284     opus_int         LBRR_flag;
285     opus_int         LBRR_flags[ MAX_FRAMES_PER_PACKET ];
286
287     silk_resampler_state_struct resampler_state;
288
289     const silk_NLSF_CB_struct   *psNLSF_CB;                 /* Pointer to NLSF codebook                                             */
290
291     /* Quantization indices */
292     SideInfoIndices indices;
293
294     /* CNG state */
295     silk_CNG_struct sCNG;
296
297     /* Stuff used for PLC */
298     opus_int         lossCnt;
299     opus_int         prevSignalType;
300
301     silk_PLC_struct sPLC;
302
303 } silk_decoder_state;
304
305 /************************/
306 /* Decoder control      */
307 /************************/
308 typedef struct {
309     /* prediction and coding parameters */
310     opus_int             pitchL[ MAX_NB_SUBFR ];
311     opus_int32           Gains_Q16[ MAX_NB_SUBFR ];
312     /* holds interpolated and final coefficients, 4-byte aligned */
313     SKP_DWORD_ALIGN opus_int16 PredCoef_Q12[ 2 ][ MAX_LPC_ORDER ];
314     opus_int16           LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ];
315     opus_int             LTP_scale_Q14;
316 } silk_decoder_control;
317
318
319 #ifdef __cplusplus
320 }
321 #endif
322
323 #endif