int Aulib::Decoder::decode(float buf[], int len, bool& callAgain)
{
if (this->getChannels() == 1 and Aulib::channelCount() == 2) {
int srcLen = this->doDecoding(buf, len / 2, callAgain);
monoToStereo(buf, srcLen * 2);
return srcLen * 2;
}
if (this->getChannels() == 2 and Aulib::channelCount() == 1) {
if (d->stereoBuf.size() != len * 2) {
d->stereoBuf.reset(len * 2);
}
int srcLen = this->doDecoding(d->stereoBuf.get(), d->stereoBuf.size(), callAgain);
stereoToMono(buf, d->stereoBuf.get(), srcLen);
return srcLen / 2;
}
return this->doDecoding(buf, len, callAgain);
}
void
dvtb_sphEncCapture(DvevmStThreadInfo *T)
{
DvevmStRetCode retval=DVEVM_ST_FAIL;
int nBytes=DVEVM_ST_FAIL;
char *buff=NULL;
int bytesToCapture=0, count=0;
char tempBuff[SPHENC_FRAME_SIZE*4];
SYS_DEBUG("Speech [capture][encode] called with %s option\n", (T->useAlgorithm)?"USE DSP":"NO DSP");
SYS_DEBUG("Number of seconds to [capture][encode] : %d\n", T->g.senc.seconds);
if ( !T->targetFp )
{
SYS_ERROR("Target file cannot be opened. It is a mandatory parameter\n");
dvtb_freeThr(T);
dvtb_threadExit();
}
// [Capture][Encode] scenario
do
{
SYS_OUT("Speech [capture][encode] started for %d seconds\n", T->g.senc.seconds);
if (T->useAlgorithm)
{
T->g.aud.sampleRate = 8000;
T->g.senc.inBuf.size = SPHENC_FRAME_SIZE * 2;
T->g.senc.outBuf.size = SPHENC_FRAME_SIZE;
if (DVEVM_ST_FAIL == dvtb_ceInit(T->g.eng.name, &T->g.senc.ceHdl))
{
SYS_ERROR("Unable to initialize Codec Engine <%s>\n", T->g.eng.name);
break;
}
else if (DVEVM_ST_FAIL == dvtb_sphEncInit(&T->g.senc))
{
SYS_ERROR("Unable to initialize Speech Encoder <%s>\n", T->g.senc.sencName);
break;
}
else
SYS_OUT("Speech Encoder <%s> initialized\n", T->g.senc.sencName);
}
else
{
T->g.senc.inBuf.size = SPHENC_FRAME_SIZE*4*2;
T->g.senc.inBuf.start = (char *)malloc(T->g.senc.inBuf.size);
}
if (!T->sourceFp)
{
T->g.aud.mode = DVEVM_ST_CAPTURE;
retval = dvtb_audioSetup(&T->g.aud);
if (DVEVM_ST_FAIL == retval)
{
SYS_ERROR("Unable to initialize Audio device <%s> for capture\n", T->g.aud.device);
break;
}
else
{
SYS_DEBUG("Audio Device <%s> initialized for capture\n", T->g.aud.device);
bytesToCapture = (T->g.senc.seconds)*(AUD_FRAME_SIZE(T->g.aud.sampleRate, T->g.aud.numChannels, T->g.aud.sampleSize));
}
}
while (1)
{
buff = tempBuff;
if (T->sourceFp)
{
nBytes = fread(buff, 1, SPHENC_FRAME_SIZE*4, T->sourceFp);
if (0==nBytes || feof(T->sourceFp))
{
SYS_DEBUG("End of file reached. Exiting ...\n");
break;
}
}
else
{
nBytes = dvtb_audioIn(&T->g.aud, buff, SPHENC_FRAME_SIZE*4);
if (DVEVM_ST_FAIL == nBytes || count >= bytesToCapture)
break;
count += SPHENC_FRAME_SIZE*4;
}
if (T->useAlgorithm)
{
stereoToMono( (short *)buff, (short *)T->g.senc.inBuf.start, SPHENC_FRAME_SIZE);
buff = T->g.senc.inBuf.start;
memset(T->g.senc.outBuf.start, 0, T->g.senc.outBuf.size);
if (DVEVM_ST_FAIL == dvtb_sphEncEncode(&T->g.senc))
{
SYS_ERROR("Unable to encode the input buffer\n");
break;
}
buff = T->g.senc.outBuf.start;
fwrite(buff, 1, T->g.senc.outBuf.size, T->targetFp);
}
else
{
// stereoToMono( (short *)buff, (short *)T->g.senc.inBuf.start, SPHENC_FRAME_SIZE);
// buff = T->g.senc.inBuf.start;
fwrite(buff, 1, SPHENC_FRAME_SIZE*4, T->targetFp);
}
}
} while (DVEVM_ST_FALSE); // Dummy loop
SYS_OUT("Speech [capture][encode] completed\n");
if (!T->sourceFp)
dvtb_audioClose(&T->g.aud);
if (T->useAlgorithm)
{
dvtb_sphEncClose(&T->g.senc);
SYS_OUT("Speech Encoder <%s> closed\n", T->g.senc.sencName);
Engine_close(T->g.senc.ceHdl);
SYS_OUT("Engine <%s> closed\n", T->g.eng.name);
}
else
free(T->g.senc.inBuf.start);
if (T->sourceFp)
{
fclose(T->sourceFp);
T->sourceFp = NULL;
}
if (T->targetFp)
{
fclose(T->targetFp);
T->targetFp = NULL;
}
SYS_OUT("Speech Capture thread exiting\n");
dvtb_freeThr(T);
dvtb_threadExit();
}
