size_t
RingBufferPool::getData(AudioBuffer& buffer, const std::string& call_id)
{
std::lock_guard<std::recursive_mutex> lk(stateLock_);
const auto bindings = getReadBindings(call_id);
if (not bindings)
return 0;
// No mixing
if (bindings->size() == 1)
return (*bindings->cbegin())->get(buffer, call_id);
buffer.reset();
buffer.setFormat(internalAudioFormat_);
size_t size = 0;
AudioBuffer mixBuffer(buffer);
for (const auto& rbuf : *bindings) {
// XXX: is it normal to only return the last positive size?
size = rbuf->get(mixBuffer, call_id);
if (size > 0)
buffer.mix(mixBuffer);
}
return size;
}
void JackLayer::fillWithToneOrRingtone(AudioBuffer &buffer)
{
buffer.resize(hardwareBufferSize_);
AudioLoop *tone = Manager::instance().getTelephoneTone();
AudioLoop *file_tone = Manager::instance().getTelephoneFile();
// In case of a dtmf, the pointers will be set to nullptr once the dtmf length is
// reached. For this reason we need to fill audio buffer with zeros if pointer is nullptr
if (tone) {
tone->getNext(buffer, playbackGain_);
} else if (file_tone) {
file_tone->getNext(buffer, playbackGain_);
} else {
buffer.reset();
}
}
size_t
RingBufferPool::getAvailableData(AudioBuffer& buffer, const std::string& call_id)
{
std::lock_guard<std::recursive_mutex> lk(stateLock_);
auto bindings = getReadBindings(call_id);
if (not bindings)
return 0;
// No mixing
if (bindings->size() == 1) {
return (*bindings->cbegin())->get(buffer, call_id);
}
size_t availableSamples = std::numeric_limits<size_t>::max();
for (const auto& rbuf : *bindings)
availableSamples = std::min(availableSamples,
rbuf->availableForGet(call_id));
if (availableSamples == std::numeric_limits<size_t>::max())
return 0;
availableSamples = std::min(availableSamples, buffer.frames());
buffer.resize(availableSamples);
buffer.reset();
buffer.setFormat(internalAudioFormat_);
AudioBuffer mixBuffer(buffer);
for (const auto &rbuf : *bindings) {
if (rbuf->get(mixBuffer, call_id) > 0)
buffer.mix(mixBuffer);
}
return availableSamples;
}