| /* |
| ** Copyright 2003-2010, VisualOn, Inc. |
| ** |
| ** Licensed under the Apache License, Version 2.0 (the "License"); |
| ** you may not use this file except in compliance with the License. |
| ** You may obtain a copy of the License at |
| ** |
| ** http://www.apache.org/licenses/LICENSE-2.0 |
| ** |
| ** Unless required by applicable law or agreed to in writing, software |
| ** distributed under the License is distributed on an "AS IS" BASIS, |
| ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| ** See the License for the specific language governing permissions and |
| ** limitations under the License. |
| */ |
| |
| |
| /*--------------------------------------------------------------------------* |
| * DTX.H * |
| *--------------------------------------------------------------------------* |
| * Static memory, constants and frametypes for the DTX * |
| *--------------------------------------------------------------------------*/ |
| |
| #ifndef __DTX_H__ |
| #define __DTX_H__ |
| |
| #define DTX_MAX_EMPTY_THRESH 50 |
| #define DTX_HIST_SIZE 8 |
| #define DTX_HIST_SIZE_MIN_ONE 7 |
| #define DTX_ELAPSED_FRAMES_THRESH (24 + 7 -1) |
| #define DTX_HANG_CONST 7 /* yields eight frames of SP HANGOVER */ |
| #define INV_MED_THRESH 14564 |
| #define ISF_GAP 128 /* 50 */ |
| #define ONE_MINUS_ISF_GAP 16384 - ISF_GAP |
| #define ISF_GAP 128 |
| #define ISF_DITH_GAP 448 |
| #define ISF_FACTOR_LOW 256 |
| #define ISF_FACTOR_STEP 2 |
| #define GAIN_THR 180 |
| #define GAIN_FACTOR 75 |
| |
| typedef struct |
| { |
| Word16 isf_hist[M * DTX_HIST_SIZE]; |
| Word16 log_en_hist[DTX_HIST_SIZE]; |
| Word16 hist_ptr; |
| Word16 log_en_index; |
| Word16 cng_seed; |
| /* DTX handler stuff */ |
| Word16 dtxHangoverCount; |
| Word16 decAnaElapsedCount; |
| Word32 D[28]; |
| Word32 sumD[DTX_HIST_SIZE]; |
| } dtx_encState; |
| |
| #define SPEECH 0 |
| #define DTX 1 |
| #define DTX_MUTE 2 |
| |
| #define TX_SPEECH 0 |
| #define TX_SID_FIRST 1 |
| #define TX_SID_UPDATE 2 |
| #define TX_NO_DATA 3 |
| |
| #define RX_SPEECH_GOOD 0 |
| #define RX_SPEECH_PROBABLY_DEGRADED 1 |
| #define RX_SPEECH_LOST 2 |
| #define RX_SPEECH_BAD 3 |
| #define RX_SID_FIRST 4 |
| #define RX_SID_UPDATE 5 |
| #define RX_SID_BAD 6 |
| #define RX_NO_DATA 7 |
| |
| /***************************************************************************** |
| * |
| * DEFINITION OF DATA TYPES |
| *****************************************************************************/ |
| |
| Word16 dtx_enc_init(dtx_encState ** st, Word16 isf_init[], VO_MEM_OPERATOR *pMemOP); |
| Word16 dtx_enc_reset(dtx_encState * st, Word16 isf_init[]); |
| void dtx_enc_exit(dtx_encState ** st, VO_MEM_OPERATOR *pMemOP); |
| |
| Word16 dtx_enc( |
| dtx_encState * st, /* i/o : State struct */ |
| Word16 isf[M], /* o : CN ISF vector */ |
| Word16 * exc2, /* o : CN excitation */ |
| Word16 ** prms |
| ); |
| |
| Word16 dtx_buffer( |
| dtx_encState * st, /* i/o : State struct */ |
| Word16 isf_new[], /* i : isf vector */ |
| Word32 enr, /* i : residual energy (in L_FRAME) */ |
| Word16 codec_mode |
| ); |
| |
| void tx_dtx_handler(dtx_encState * st, /* i/o : State struct */ |
| Word16 vad_flag, /* i : vad decision */ |
| Word16 * usedMode /* i/o : mode changed or not */ |
| ); |
| |
| void Qisf_ns( |
| Word16 * isf1, /* input : ISF in the frequency domain (0..0.5) */ |
| Word16 * isf_q, /* output: quantized ISF */ |
| Word16 * indice /* output: quantization indices */ |
| ); |
| |
| |
| void Disf_ns( |
| Word16 * indice, /* input: quantization indices */ |
| Word16 * isf_q /* input : ISF in the frequency domain (0..0.5) */ |
| ); |
| |
| #endif //__DTX_H__ |
| |