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adding stdev stuff

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Philip Rosedale 2013-02-04 10:55:38 -08:00
parent 0a180f0f68
commit 17525b434e
1 changed files with 11 additions and 2 deletions
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13
Source/Audio.cpp
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@ -27,7 +27,7 @@ const float AMPLITUDE_RATIO_AT_90 = 0.5;
const short RING_BUFFER_FRAMES = 5;
const short RING_BUFFER_SIZE_SAMPLES = RING_BUFFER_FRAMES * BUFFER_LENGTH_SAMPLES;
const short JITTER_BUFFER_LENGTH_MSECS = 1;
const short JITTER_BUFFER_LENGTH_MSECS = 26;
const int SAMPLE_RATE = 22050;
const short NUM_AUDIO_SOURCES = 2;
@ -38,6 +38,12 @@ char EC2_WEST_AUDIO_SERVER[] = "54.241.92.53";
const int AUDIO_UDP_LISTEN_PORT = 55444;
int starve_counter = 0;
// Stuff used to compute the standard deviation of the sample
int stdev_counter = 0;
float stdev_variance[1000]; // Difference between when last two packets received
float stdev_value;
#define LOG_SAMPLE_DELAY 1
@ -121,7 +127,8 @@ int audioCallback (const void *inputBuffer,
}
if (ringBuffer->diffLastWriteNextOutput() < BUFFER_LENGTH_SAMPLES) {
std::cout << "Starved\n";
starve_counter++;
printf("Starved #%d\n", starve_counter);
ringBuffer->endOfLastWrite = NULL;
}
}
@ -214,9 +221,11 @@ void *receiveAudioViaUDP(void *args) {
if (sharedAudioData->audioSocket->receive((void *)receivedData, receivedBytes)) {
gettimeofday(&currentReceiveTime, NULL);
if (LOG_SAMPLE_DELAY) {
// write time difference (in microseconds) between packet receipts to file
double timeDiff = diffclock(previousReceiveTime, currentReceiveTime);
logFile << timeDiff << std::endl;
}