php-libtgvoip/audio/AudioOutputModule.cpp

//
// libtgvoip is free and unencumbered public domain software.
// For more information, see http://unlicense.org or the UNLICENSE file
// you should have received with this source code distribution.
//

#include "AudioOutputModule.h"
#include <stdio.h>
#include "../libtgvoip/logging.h"
#include <unistd.h>
#include <phpcpp.h>

using namespace tgvoip;
using namespace tgvoip::audio;

AudioOutputModule::AudioOutputModule(std::string deviceID, VoIPController *controller)
{
    wrapper = (VoIP *)(controller->implData);
    wrapper->out = this;
    wrapper->outputState = AUDIO_STATE_CREATED;
}
AudioOutputModule::~AudioOutputModule()
{
    wrapper->outputState = AUDIO_STATE_NONE;
    wrapper->out = NULL;
    if (receiverThread)
    {
        LOGD("before join receiverThread");
        join_thread(receiverThread);
    }
}

void AudioOutputModule::Configure(uint32_t sampleRate, uint32_t bitsPerSample, uint32_t channels)
{
    outputSampleNumber = 960;
    outputSampleRate = sampleRate;
    outputBitsPerSample = bitsPerSample;
    outputChannels = channels;
    outputSamplePeriod = 1.0 / sampleRate * 1000000;
    outputWritePeriod = 1.0 / sampleRate * outputSampleNumber * 1000000;
    outputSamplePeriodSec = 1.0 / sampleRate;
    outputWritePeriodSec = 1.0 / sampleRate * outputSampleNumber;
    outputSamplesSize = outputSampleNumber * outputChannels * outputBitsPerSample / 8;
    outputCSamplesSize = outputSampleNumber * outputChannels * outputBitsPerSample / 8 * sizeof(unsigned char);

    wrapper->outputState = AUDIO_STATE_CONFIGURED;
}

void AudioOutputModule::Start()
{
    if (wrapper->outputState == AUDIO_STATE_RUNNING)
        return;
    wrapper->outputState = AUDIO_STATE_RUNNING;

    LOGE("STARTING RECEIVER THREAD");
    start_thread(receiverThread, StartReceiverThread, this);
    set_thread_priority(receiverThread, get_thread_max_priority());
    set_thread_name(receiverThread, "voip-receiver");
}

void AudioOutputModule::Stop()
{
    if (wrapper->outputState != AUDIO_STATE_RUNNING)
        return;
    wrapper->outputState = AUDIO_STATE_CONFIGURED;
}

bool AudioOutputModule::IsPlaying()
{
    return wrapper->outputState == AUDIO_STATE_RUNNING;
}

float AudioOutputModule::GetLevel()
{
    return outputLevel;
}

void *AudioOutputModule::StartReceiverThread(void *output)
{
    ((AudioOutputModule *)output)->RunReceiverThread();
    return NULL;
}

void AudioOutputModule::RunReceiverThread()
{
    unsigned char *data = (unsigned char *)malloc(outputCSamplesSize);
    double time = VoIPController::GetCurrentTime();
    double sleeptime;

    while (wrapper->outputState == AUDIO_STATE_RUNNING)
    {
        lock_mutex(wrapper->outputMutex);

        while (!wrapper->configuringOutput && wrapper->outputState == AUDIO_STATE_RUNNING)
        {
            if ((sleeptime = (outputWritePeriodSec - (VoIPController::GetCurrentTime() - time)) * 1000000.0) < 0)
            {
                LOGE("Receiver: I'm late!");
            }
            else
            {
                usleep(sleeptime);
            }

            time = VoIPController::GetCurrentTime();
            InvokeCallback(data, outputCSamplesSize);
            if (wrapper->outputFile != NULL)
            {
                if (fwrite(data, sizeof(unsigned char), outputSamplesSize, wrapper->outputFile) != outputCSamplesSize)
                {
                    LOGE("COULD NOT WRITE DATA TO FILE");
                }
            }
        }
        unlock_mutex(wrapper->outputMutex);
    }
    free(data);
}

void AudioOutputModule::EnumerateDevices(std::vector<AudioOutputDevice> &devs)
{
}