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some initial audio stat render fixes

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This commit is contained in:
Stephen Birarda 2013-12-16 16:21:50 -08:00
parent 90ea978278
commit bb93c64d8d
5 changed files with 12 additions and 18 deletions
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2
interface/src/Application.cpp
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@ -71,7 +71,7 @@ const int IDLE_SIMULATE_MSECS = 16; // How often should call simul
// in the idle loop? (60 FPS is default)
static QTimer* idleTimer = NULL;
const int STARTUP_JITTER_SAMPLES = PACKET_LENGTH_SAMPLES_PER_CHANNEL / 2;
const int STARTUP_JITTER_SAMPLES = NETWORK_BUFFER_LENGTH_SAMPLES_PER_CHANNEL / 2;
// Startup optimistically with small jitter buffer that
// will start playback on the second received audio packet.

18
interface/src/Audio.cpp
View file

@ -451,6 +451,7 @@ void Audio::addReceivedAudioToBuffer(const QByteArray& audioByteArray) {
_desiredOutputFormat, _outputFormat);
if (_outputDevice) {
_outputDevice->write(outputBuffer);
// add output (@speakers) data just written to the scope
@ -500,7 +501,7 @@ void Audio::render(int screenWidth, int screenHeight) {
glVertex2f(currentX, topY);
glVertex2f(currentX, bottomY);
for (int i = 0; i < _ringBuffer.getSampleCapacity() / 2; i++) {
for (int i = 0; i < RING_BUFFER_LENGTH_FRAMES; i++) {
glVertex2f(currentX, halfY);
glVertex2f(currentX + frameWidth, halfY);
currentX += frameWidth;
@ -512,14 +513,12 @@ void Audio::render(int screenWidth, int screenHeight) {
// Show a bar with the amount of audio remaining in ring buffer beyond current playback
float remainingBuffer = 0;
timeval currentTime;
gettimeofday(&currentTime, NULL);
float timeLeftInCurrentBuffer = 0;
if (_lastCallbackTime.tv_usec > 0) {
timeLeftInCurrentBuffer = AUDIO_CALLBACK_MSECS - diffclock(&_lastCallbackTime, &currentTime);
}
remainingBuffer = PACKET_LENGTH_SAMPLES / PACKET_LENGTH_SAMPLES * AUDIO_CALLBACK_MSECS;
int bytesLeftInAudioOutput = _audioOutput->bufferSize() - _audioOutput->bytesFree();
float secondsLeftForAudioOutput = (bytesLeftInAudioOutput / sizeof(int16_t)) / _outputFormat.sampleRate();
float timeLeftInCurrentBuffer = AUDIO_CALLBACK_MSECS - (secondsLeftForAudioOutput * 1000);
remainingBuffer = 1 / AUDIO_CALLBACK_MSECS;
if (_numFramesDisplayStarve == 0) {
glColor3f(0, 1, 0);
@ -557,7 +556,8 @@ void Audio::render(int screenWidth, int screenHeight) {
// Show a red bar with the 'start' point of one frame plus the jitter buffer
glColor3f(1, 0, 0);
int jitterBufferPels = (1.f + (float)getJitterBufferSamples() / (float) PACKET_LENGTH_SAMPLES_PER_CHANNEL) * frameWidth;
int jitterBufferPels = (1.f + (float)getJitterBufferSamples()
/ (float) NETWORK_BUFFER_LENGTH_SAMPLES_PER_CHANNEL) * frameWidth;
sprintf(out, "%.0f\n", getJitterBufferSamples() / SAMPLE_RATE * 1000.f);
drawtext(startX + jitterBufferPels - 5, topY - 9, 0.10, 0, 1, 0, out, 1, 0, 0);
sprintf(out, "j %.1f\n", _measuredJitter);

6
interface/src/Audio.h
View file

@ -26,11 +26,6 @@
static const int NUM_AUDIO_CHANNELS = 2;
static const int PACKET_LENGTH_BYTES = 1024;
static const int PACKET_LENGTH_BYTES_PER_CHANNEL = PACKET_LENGTH_BYTES / 2;
static const int PACKET_LENGTH_SAMPLES = PACKET_LENGTH_BYTES / sizeof(int16_t);
static const int PACKET_LENGTH_SAMPLES_PER_CHANNEL = PACKET_LENGTH_SAMPLES / 2;
class QAudioInput;
class QAudioOutput;
class QIODevice;
@ -86,7 +81,6 @@ private:
AudioRingBuffer _ringBuffer;
Oscilloscope* _scope;
StDev _stdev;
timeval _lastCallbackTime;
timeval _lastReceiveTime;
float _averagedLatency;
float _measuredJitter;

2
libraries/audio/src/AudioRingBuffer.cpp
View file

@ -15,8 +15,6 @@
#include "AudioRingBuffer.h"
const short RING_BUFFER_LENGTH_FRAMES = 10;
AudioRingBuffer::AudioRingBuffer(int numFrameSamples) :
NodeData(NULL),
_sampleCapacity(numFrameSamples * RING_BUFFER_LENGTH_FRAMES),

2
libraries/audio/src/AudioRingBuffer.h
View file

@ -25,6 +25,8 @@ const int NETWORK_BUFFER_LENGTH_SAMPLES_STEREO = NETWORK_BUFFER_LENGTH_BYTES_STE
const int NETWORK_BUFFER_LENGTH_BYTES_PER_CHANNEL = 512;
const int NETWORK_BUFFER_LENGTH_SAMPLES_PER_CHANNEL = NETWORK_BUFFER_LENGTH_BYTES_PER_CHANNEL / sizeof(int16_t);
const short RING_BUFFER_LENGTH_FRAMES = 10;
const int MAX_SAMPLE_VALUE = std::numeric_limits<int16_t>::max();
const int MIN_SAMPLE_VALUE = std::numeric_limits<int16_t>::min();