net.java.sip.communicator.impl.neomedia.codec.audio.g729
Class Coder

java.lang.Object
  net.java.sip.communicator.impl.neomedia.codec.audio.g729.Ld8k
      net.java.sip.communicator.impl.neomedia.codec.audio.g729.Coder

 class Coder
extends Ld8k

Main program of the ITU-T G.729 8 kbit/s encoder. Usage : coder speech_file bitstream_file

Author:

Lubomir Marinov (translation of ITU-T C source code to Java)

Field Summary

Fields inherited from class net.java.sip.communicator.impl.neomedia.codec.audio.g729.Ld8k

AGC_FAC, AGC_FAC1, ALPHA, BETA, BIT_0, BIT_1, CONST12, DIM_RR, F_UP_PST, FIR_SIZE_ANA, FIR_SIZE_SYN, FLT_MAX_G729, FLT_MIN_G729, GAIN_PIT_MAX, GAMMA_G, GAMMA1_0, GAMMA1_1, GAMMA1_PST, GAMMA2_0_H, GAMMA2_0_L, GAMMA2_1, GAMMA2_PST, GAMMA3_MINUS, GAMMA3_PLUS, GAP1, GAP2, GAP3, GP0999, GPCLIP, GPCLIP2, GRID_POINTS, INV_COEF, INV_L_SUBFR, L_FRAME, L_INTER10, L_INTER4, L_INTERPOL, L_LIMIT, L_NEXT, L_SUBFR, L_SUBFRP1, L_TOTAL, L_WINDOW, LH_UP_L, LH_UP_S, LH2_L, LH2_L_P1, LH2_S, LONG_H_ST, M, M_LIMIT, MA_NP, MAX_TIME, MEAN_ENER, MEM_RES2, MIN_GPLT, MODE, MP1, MSIZE, NB_POS, NC, NC0, NC0_B, NC1, NC1_B, NCAN1, NCAN2, NCODE1, NCODE1_B, NCODE2, NCODE2_B, PI, PI04, PI92, PIT_MAX, PIT_MIN, PRM_SIZE, SERIAL_SIZE, SHARPMAX, SHARPMIN, SIZ_RES2, SIZ_TAB_HUP_L, SIZ_TAB_HUP_S, SIZ_Y_UP, SIZE_WORD, STEP, SYNC_WORD, THRESCRIT, THRESH_ERR, THRESH_H1, THRESH_H2, THRESH_L1, THRESH_L2, THRESHFCB, THRESHPIT, UP_SAMP

Constructor Summary

Coder()
Initialization of the coder.

Method Summary

static void	main(String[] args) Usage : coder speech_file bitstream_file Format for speech_file: Speech is read form a binary file of 16 bits data.
(package private) void	process(short[] sp16, short[] serial) Process L_FRAME short of speech.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Coder

Coder()

Initialization of the coder.

Method Detail

main

public static void main(String[] args)
                 throws IOException

Usage : coder speech_file bitstream_file Format for speech_file: Speech is read form a binary file of 16 bits data. Format for bitstream_file: One word (2-bytes) to indicate erasure. One word (2 bytes) to indicate bit rate 80 words (2-bytes) containing 80 bits.

Parameters:

args - speech_file bitstream_file

Throws:

IOException

process

void process(short[] sp16,
             short[] serial)

Process L_FRAME short of speech.

Parameters:

sp16 - input : speach short array

serial - output : serial array encoded in bits_ld8k