char* CDecoder::G7262PCM(char* data, int lenght, int& newLength)
{
CCriLock lock(m_cri);
newLength = lenght*8;
if (newLength > m_audioBufSize)
{
free(m_audioBuf);
m_audioBufSize = newLength;
m_audioBuf = (char*)malloc(m_audioBufSize);
}
g726_Decode(data, (unsigned char*)m_audioBuf);
return m_audioBuf;
}
int main()
{
int serial_fd;
int sound_fd;
int file_orig_fd;
int file_encode_fd;
int file_decode_fd;
unsigned char in[120];
unsigned char out[960];
serial_fd = serial_init();
sound_fd = sound_init();
file_orig_fd = open("phone_orig.wav", O_RDONLY);
if (file_orig_fd < 0) {
printf("open phone.wav error! \n");
return -1;
}
file_encode_fd = open("phone_encode.wav", O_RDWR|O_CREAT);
if (file_encode_fd < 0) {
printf("open file error !\n");
return -1;
}
file_decode_fd = open("phone_decode.wav", O_WRONLY|O_CREAT);
if (file_decode_fd < 0) {
printf("open file error !\n");
return -1;
}
/* the encoding part */
int m;
g726_state state_ptr;
g726_init_state(&state_ptr);
while (1) {
m = read(file_orig_fd, out, 960);
if (m != 960)
break;
g726_Encode(out, in, &state_ptr);
write(file_encode_fd, in,120);
}
/* move the file offset to the begnning of the file */
lseek(file_encode_fd, 0, SEEK_SET);
g726_init_state(&state_ptr);
/* decoding part */
while(1) {
m = read(file_encode_fd, in, 120);
if (m != 120)
break;
g726_Decode(in, out, &state_ptr);
write(file_decode_fd, out, 960);
}
close(serial_fd);
close(sound_fd);
close(file_orig_fd);
close(file_encode_fd);
close(file_decode_fd);
}
