void G729aDecoder_Init() { extern Word16 *synth; bad_lsf = 0; /* Initialize bad LSF indicator */ Init_Decod_ld8a(); Init_Post_Filter(); Init_Post_Process(); }
static void *create_decoder(const struct PluginCodec_Definition *codec) { DecState *decoder; decoder = Init_Decod_ld8a(); Init_Post_Filter(decoder); Init_Post_Process(decoder); return (void *)decoder; }
Flag g729a_dec_init (void *decState) { g729a_decode_frame_state *state; if (decState == NULL) return 0; state = (g729a_decode_frame_state *)decState; Set_zero(state->synth_buf, M); state->synth = state->synth_buf + M; Init_Decod_ld8a(&state->decoderState); Init_Post_Filter(&state->postFilterState); Init_Post_Process(&state->postProcessState); return 1; }
static int tdav_codec_g729ab_open(tmedia_codec_t* self) { tdav_codec_g729ab_t* g729a = (tdav_codec_g729ab_t*)self; // Initialize the decoder bad_lsf = 0; g729a->decoder.synth = (g729a->decoder.synth_buf + M); Init_Decod_ld8a(); Init_Post_Filter(); Init_Post_Process(); /* for G.729B */ Init_Dec_cng(); // Initialize the encoder Init_Pre_Process(); Init_Coder_ld8a(); Set_zero(g729a->encoder.prm, PRM_SIZE + 1); /* for G.729B */ Init_Cod_cng(); return 0; }
//#if 0 int main(int argc, char *argv[] ) { Word16 synth_buf[L_FRAME+M], *synth; /* Synthesis */ Word16 parm[PRM_SIZE+1]; /* Synthesis parameters */ Word16 serial[SERIAL_SIZE]; /* Serial stream */ Word16 Az_dec[MP1*2]; /* Decoded Az for post-filter */ Word16 T2[2]; /* Pitch lag for 2 subframes */ Word16 i, frame; FILE *f_syn, *f_serial; printf("\n"); printf("************ G.729a 8.0 KBIT/S SPEECH DECODER ************\n"); printf("\n"); printf("------------------- Fixed point C simulation ----------------\n"); printf("\n"); printf("----------------- Version 1.1 ---------------\n"); printf("\n"); /* Passed arguments */ argc = 3; strcpy(argv[1],"test.bit"); strcpy(argv[2],"test.dec"); if ( argc != 3) { printf("Usage :%s bitstream_file outputspeech_file\n",argv[0]); printf("\n"); printf("Format for bitstream_file:\n"); printf(" One (2-byte) synchronization word \n"); printf(" One (2-byte) size word,\n"); printf(" 80 words (2-byte) containing 80 bits.\n"); printf("\n"); printf("Format for outputspeech_file:\n"); printf(" Synthesis is written to a binary file of 16 bits data.\n"); exit( 1 ); } /* Open file for synthesis and packed serial stream */ if( (f_serial = fopen(argv[1],"rb") ) == NULL ) { printf("%s - Error opening file %s !!\n", argv[0], argv[1]); exit(0); } if( (f_syn = fopen(argv[2], "wb") ) == NULL ) { printf("%s - Error opening file %s !!\n", argv[0], argv[2]); exit(0); } printf("Input bitstream file : %s\n",argv[1]); printf("Synthesis speech file : %s\n",argv[2]); /*-----------------------------------------------------------------* * Initialization of decoder * *-----------------------------------------------------------------*/ for (i=0; i<M; i++) synth_buf[i] = 0; synth = synth_buf + M; bad_lsf = 0; /* Initialize bad LSF indicator */ Init_Decod_ld8a(); Init_Post_Filter(); Init_Post_Process(); /*-----------------------------------------------------------------* * Loop for each "L_FRAME" speech data * *-----------------------------------------------------------------*/ frame = 0; /* c code */ while( fread(serial, sizeof(Word16), SERIAL_SIZE, f_serial) == SERIAL_SIZE) { //printf("Frame =%d\n", frame++); printf("Frame =%d \n", frame); frame = frame + 1; bits2prm_ld8k( &serial[2], &parm[1]); /* the hardware detects frame erasures by checking if all bits are set to zero */ parm[0] = 0; /* No frame erasure */ for (i=2; i < SERIAL_SIZE; i++) if (serial[i] == 0 ) parm[0] = 1; /* frame erased */ /* check pitch parity and put 1 in parm[4] if parity error */ parm[4] = Check_Parity_Pitch(parm[3], parm[4]); Decod_ld8a(parm, synth, Az_dec, T2); Post_Filter(synth, Az_dec, T2); /* Post-filter */ Post_Process(synth, L_FRAME); fwrite(synth, sizeof(short), L_FRAME, f_syn); } return(0); }