//存储回音数据
void AudioInput::addEcho(const void *data, unsigned int nsamp) {
while (nsamp > 0) {
unsigned int left = min(nsamp, iEchoLength - iEchoFilled);
if (bEchoMulti) {
const unsigned int samples = left * iEchoChannels;
if (eEchoFormat == SampleFloat)
for (unsigned int i=0;i<samples;++i)
pfEchoInput[i] = reinterpret_cast<const float *>(data)[i];
else
for (unsigned int i=0;i<samples;++i)
pfEchoInput[i] = static_cast<float>(reinterpret_cast<const short *>(data)[i]) * (1.0f / 32768.f);
} else {
imfEcho(pfEchoInput + iEchoFilled, data, left, iEchoChannels);
}
iEchoFilled += left;
nsamp -= left;
if (nsamp > 0) {
if (eEchoFormat == SampleFloat)
data = reinterpret_cast<const float *>(data) + left * iEchoChannels;
else
data = reinterpret_cast<const short *>(data) + left * iEchoChannels;
}
if (iEchoFilled == iEchoLength) {
iEchoFilled = 0;
float *ptr = srsEcho ? pfOutput : pfEchoInput;
if (srsEcho) {
spx_uint32_t inlen = iEchoLength;
spx_uint32_t outlen = iFrameSize;
speex_resampler_process_interleaved_float(srsEcho, pfEchoInput, &inlen, pfOutput, &outlen);
}
short *outbuff = new short[iEchoFrameSize];
const float mul = 32768.f;
for (unsigned int j=0;j<iEchoFrameSize;++j)
outbuff[j] = static_cast<short>(ptr[j] * mul);
iJitterSeq = min(iJitterSeq+1,10000U);
MutexLocker l(&qmEcho);
qlEchoFrames.push_back(outbuff);
}
}
}
void AudioInput::addEcho(const void *data, unsigned int nsamp) {
while (nsamp > 0) {
unsigned int left = qMin(nsamp, iEchoLength - iEchoFilled);
imfEcho(pfEchoInput + iEchoFilled, data, left, iEchoChannels);
iEchoFilled += left;
nsamp -= left;
if (nsamp > 0) {
if (eEchoFormat == SampleFloat)
data = reinterpret_cast<const float *>(data) + left * iEchoChannels;
else
data = reinterpret_cast<const short *>(data) + left * iEchoChannels;
}
if (iEchoFilled == iEchoLength) {
iEchoFilled = 0;
STACKVAR(short, outbuff, iFrameSize);
float *ptr = srsEcho ? pfOutput : pfEchoInput;
if (srsEcho) {
spx_uint32_t inlen = iEchoLength;
spx_uint32_t outlen = iFrameSize;
speex_resampler_process_float(srsEcho, 0, pfEchoInput, &inlen, pfOutput, &outlen);
}
const float mul = 32768.f;
for (int j=0;j<iFrameSize;++j)
outbuff[j] = static_cast<short>(ptr[j] * mul);
JitterBufferPacket jbp;
jbp.data = reinterpret_cast<char *>(outbuff);
jbp.len = iFrameSize * sizeof(short);
jbp.timestamp = ++iJitterSeq * 10;
jbp.span = 10;
jbp.sequence = static_cast<unsigned short>(iJitterSeq);
jbp.user_data = 0;
jitter_buffer_put(jb, &jbp);
}
}
}
void AudioInput::addEcho(const void *data, unsigned int nsamp) {
while (nsamp > 0) {
// Make sure we don't overrun the echo frame buffer
const unsigned int left = qMin(nsamp, iEchoLength - iEchoFilled);
if (bEchoMulti) {
const unsigned int samples = left * iEchoChannels;
if (eEchoFormat == SampleFloat) {
for (unsigned int i=0;i<samples;++i)
pfEchoInput[i] = reinterpret_cast<const float *>(data)[i];
}
else {
// 16bit PCM -> float
for (unsigned int i=0;i<samples;++i)
pfEchoInput[i] = static_cast<float>(reinterpret_cast<const short *>(data)[i]) * (1.0f / 32768.f);
}
} else {
// Mix echo channels (converts 16bit PCM -> float if needed)
imfEcho(pfEchoInput + iEchoFilled, data, left, iEchoChannels);
}
iEchoFilled += left;
nsamp -= left;
// If new samples are left offset data pointer to point at the first one for next iteration
if (nsamp > 0) {
if (eEchoFormat == SampleFloat)
data = reinterpret_cast<const float *>(data) + left * iEchoChannels;
else
data = reinterpret_cast<const short *>(data) + left * iEchoChannels;
}
if (iEchoFilled == iEchoLength) {
//Frame complete
iEchoFilled = 0;
// Resample if necessary
float *ptr = srsEcho ? pfOutput : pfEchoInput;
if (srsEcho) {
spx_uint32_t inlen = iEchoLength;
spx_uint32_t outlen = iFrameSize;
speex_resampler_process_interleaved_float(srsEcho, pfEchoInput, &inlen, pfOutput, &outlen);
}
short *outbuff = new short[iEchoFrameSize];
// float -> 16bit PCM
const float mul = 32768.f;
for (unsigned int j=0;j<iEchoFrameSize;++j)
outbuff[j] = static_cast<short>(ptr[j] * mul);
// Push frame into the echo chancellers jitter buffer
QMutexLocker l(&qmEcho);
iJitterSeq = qMin(iJitterSeq + 1,10000U);
qlEchoFrames.append(outbuff);
}
}
}
