void AudioInput::addMic(const void *data, unsigned int nsamp) {
while (nsamp > 0) {
unsigned int left = qMin(nsamp, iMicLength - iMicFilled);
imfMic(pfMicInput + iMicFilled, data, left, iMicChannels);
iMicFilled += left;
nsamp -= left;
if (nsamp > 0) {
if (eMicFormat == SampleFloat)
data = reinterpret_cast<const float *>(data) + left * iMicChannels;
else
data = reinterpret_cast<const short *>(data) + left * iMicChannels;
}
if (iMicFilled == iMicLength) {
iMicFilled = 0;
float *ptr = srsMic ? pfOutput : pfMicInput;
if (srsMic) {
spx_uint32_t inlen = iMicLength;
spx_uint32_t outlen = iFrameSize;
speex_resampler_process_float(srsMic, 0, pfMicInput, &inlen, pfOutput, &outlen);
}
const float mul = 32768.f;
for (int j=0;j<iFrameSize;++j)
psMic[j] = static_cast<short>(ptr[j] * mul);
if (iEchoChannels > 0) {
JitterBufferPacket jbp;
jbp.data = reinterpret_cast<char *>(psSpeaker);
jbp.len = iFrameSize * sizeof(short);
jbp.timestamp = 0;
jbp.span = 0;
jbp.sequence = 0;
jbp.user_data = 0;
spx_int32_t offs;
jitter_buffer_get(jb, &jbp, 10, &offs);
jitter_buffer_tick(jb);
}
encodeAudioFrame();
}
}
}
void AudioInput::addMic(const void *data, unsigned int nsamp) {
while (nsamp > 0) {
unsigned int left = min(nsamp, iMicLength - iMicFilled);
imfMic(pfMicInput + iMicFilled, data, left, iMicChannels);
iMicFilled += left;
nsamp -= left;
if (nsamp > 0) {
if (eMicFormat == SampleFloat)
data = reinterpret_cast<const float *>(data) + left * iMicChannels;
else
data = reinterpret_cast<const short *>(data) + left * iMicChannels;
}
if (iMicFilled == iMicLength) {
iMicFilled = 0;
float *ptr = srsMic ? pfOutput : pfMicInput;
if (srsMic) {
spx_uint32_t inlen = iMicLength;
spx_uint32_t outlen = iFrameSize;
speex_resampler_process_float(srsMic, 0, pfMicInput, &inlen, pfOutput, &outlen);
}
const float mul = 32768.f;
for (int j=0;j<iFrameSize;++j)
psMic[j] = static_cast<short>(ptr[j] * mul);
if (iEchoChannels > 0) {
short *echo = NULL;
//获取回音数据
{
MutexLocker l(&qmEcho);
if (qlEchoFrames.empty()) {
iJitterSeq = 0;
iMinBuffered = 1000;
} else {
iMinBuffered = min(iMinBuffered, qlEchoFrames.size());
if ((iJitterSeq > 100) && (iMinBuffered > 1)) {
iJitterSeq = 0;
iMinBuffered = 1000;
delete [] qlEchoFrames.front();
qlEchoFrames.pop_front();
}
echo = qlEchoFrames.front();
qlEchoFrames.pop_front();
}
}
if (echo) {
if (psSpeaker)
delete [] psSpeaker;
psSpeaker = echo;
}
}
encodeAudioFrame();
}
}
}
void AudioInput::addMic(const void *data, unsigned int nsamp) {
while (nsamp > 0) {
// Make sure we don't overrun the frame buffer
const unsigned int left = qMin(nsamp, iMicLength - iMicFilled);
// Append mix into pfMicInput frame buffer (converts 16bit pcm->float if necessary)
imfMic(pfMicInput + iMicFilled, data, left, iMicChannels);
iMicFilled += left;
nsamp -= left;
// If new samples are left offset data pointer to point at the first one for next iteration
if (nsamp > 0) {
if (eMicFormat == SampleFloat)
data = reinterpret_cast<const float *>(data) + left * iMicChannels;
else
data = reinterpret_cast<const short *>(data) + left * iMicChannels;
}
if (iMicFilled == iMicLength) {
// Frame complete
iMicFilled = 0;
// If needed resample frame
float *ptr = srsMic ? pfOutput : pfMicInput;
if (srsMic) {
spx_uint32_t inlen = iMicLength;
spx_uint32_t outlen = iFrameSize;
speex_resampler_process_float(srsMic, 0, pfMicInput, &inlen, pfOutput, &outlen);
}
// Convert float to 16bit PCM
const float mul = 32768.f;
for (int j = 0; j < iFrameSize; ++j)
psMic[j] = static_cast<short>(qBound(-32768.f, (ptr[j] * mul), 32767.f));
// If we have echo chancellation enabled...
if (iEchoChannels > 0) {
short *echo = NULL;
{
QMutexLocker l(&qmEcho);
if (qlEchoFrames.isEmpty()) {
iJitterSeq = 0;
iMinBuffered = 1000;
} else {
// Compensate for drift between the microphone and the echo source
iMinBuffered = qMin(iMinBuffered, qlEchoFrames.count());
if ((iJitterSeq > 100) && (iMinBuffered > 1)) {
iJitterSeq = 0;
iMinBuffered = 1000;
delete [] qlEchoFrames.takeFirst();
}
echo = qlEchoFrames.takeFirst();
}
}
if (echo) {
// We have echo data for the current frame, remember that
delete [] psSpeaker;
psSpeaker = echo;
}
}
// Encode and send frame
encodeAudioFrame();
}
}
}
