ghy

Alejandro Acuña

2025-03-12 26319e4c5bfbee722c15b8e7ccca9b6127bb1cb8

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// AudioSampleManager.cpp: implementation of the AudioSampleManager class.
//
//////////////////////////////////////////////////////////////////////
 
#include "AudioSampleManager.h"
#include "AudioSample.h"
 
using namespace std;
 
AudioSampleManager * AudioSampleManager::instance = NULL;
bool AudioSampleManager::initialized = false;
CRITICAL_SECTION AudioSampleManager::instanceMutex;
 
int getSampleCounter = 0;
 
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
 
AudioSampleManager *
AudioSampleManager::GetInstance()
{
    EnterCriticalSection(&instanceMutex);
    if (!instance)
    {
        instance = new AudioSampleManager();
    }
    LeaveCriticalSection(&instanceMutex);
    return instance;
}
 
void
AudioSampleManager::Initialize()
{
    if (!initialized)
    {
        InitializeCriticalSection(&instanceMutex);
        EnterCriticalSection(&instanceMutex);
        instance = GetInstance();
        initialized = true;
        LeaveCriticalSection(&instanceMutex);
    }
}
 
void
AudioSampleManager::Uninitialize()
{
    if (initialized)
    {
        EnterCriticalSection(&instanceMutex);
        delete instance;
        instance = NULL;
        initialized = false;
        LeaveCriticalSection(&instanceMutex);
        DeleteCriticalSection(&instanceMutex);
    }
}
 
AudioSampleManager::AudioSampleManager()
{
    char subFacilityName[100];
    sprintf(subFacilityName, "AudioSampleManager:%x", this);
    tracer.SetSubFacilityName(subFacilityName);
    SetTraceLevel();
 
    numSamplesCreated = 0;
    InitializeCriticalSection(&audioSamplesMutex);
    instance = NULL;
}
 
AudioSampleManager::~AudioSampleManager()
{
    EnterCriticalSection(&audioSamplesMutex);
    int numSamplesToDelete = audioSamples.size();
    while (audioSamples.size() > 0)
    {
        AudioSample *audioSample = audioSamples.front();
        audioSamples.pop_front();
        delete audioSample;
    }
    LeaveCriticalSection(&audioSamplesMutex);
    tracer.tracef(SIG, "~AudioSampleManager : created %d samples, freed %d samples\n", numSamplesCreated, numSamplesToDelete);
    DeleteCriticalSection(&audioSamplesMutex);
}
 
int
AudioSampleManager::SetTraceLevel()
{
    long SystemMask = 0;
    if ((SystemMask = GetRegKeyLong(HKEY_CURRENT_USER, "Software\\Cisco Systems\\MTC\\Tracing", "AllComponents", 0x0)) == 0)
    {
        SystemMask = GetRegKeyLong(HKEY_CURRENT_USER, "Software\\Cisco Systems\\MTC\\Tracing", "AudioSampleManager", EE);
    }
    tracer.SetSystemMask(SystemMask);
    return 0;
}
 
int
AudioSampleManager::GetAudioSample(AudioSample **ppAudioSample, TraceUser *container)
{
    getSampleCounter = (getSampleCounter + 1) % 1000;
    if (getSampleCounter == 0)
    {
        tracer.tracef(SIG, "GetAudioSample : free list has %d samples, created %d samples\n", audioSamples.size(), numSamplesCreated);
    }
    EnterCriticalSection(&audioSamplesMutex);
    if (audioSamples.size() > 0)
    {
        *ppAudioSample = audioSamples.front();
        audioSamples.pop_front();
        LeaveCriticalSection(&audioSamplesMutex);
    }
    else
    {
        LeaveCriticalSection(&audioSamplesMutex);
        *ppAudioSample = new AudioSample(this);
        numSamplesCreated++;
    }
    EnterCriticalSection(&((*ppAudioSample)->sampleMutex));
    if ((*ppAudioSample)->refCount > 0)
    {
        LeaveCriticalSection(&((*ppAudioSample)->sampleMutex));
        *ppAudioSample = new AudioSample(this);
        numSamplesCreated++;
        EnterCriticalSection(&((*ppAudioSample)->sampleMutex));
    }
    (*ppAudioSample)->refCount = 1;
    (*ppAudioSample)->SetDataSize(0);
    (*ppAudioSample)->SetSilenceDuration(0);
    LeaveCriticalSection(&((*ppAudioSample)->sampleMutex));
 
#ifdef DEBUG_AUDIOSAMPLES
    tracer.tracef(EE, "GetAudioSample : Container 0x%x:%s got audioSample 0x%x\n", container, container->TraceName(), *ppAudioSample);
#endif
    return 0;
}
 
int
AudioSampleManager::AudioSampleReleased(AudioSample *audioSample)
{
    audioSample->refCount = 0;
    EnterCriticalSection(&audioSamplesMutex);
    audioSamples.push_back(audioSample);
    LeaveCriticalSection(&audioSamplesMutex);
    return 0;
}