From 6c1511ed41b4ed54a39a17c3fa697f6d9fba1bdf Mon Sep 17 00:00:00 2001
From: Stephen Birarda <commit@birarda.com>
Date: Mon, 4 Feb 2013 17:34:40 -0800
Subject: [PATCH] add a really dumb graph for ring buffer stats

---
 Source/Audio.cpp | 54 ++++++++++++++++++++++++++++++++++++++++++++++--
 Source/Audio.h   |  1 +
 Source/main.cpp  |  1 +
 3 files changed, 54 insertions(+), 2 deletions(-)

diff --git a/Source/Audio.cpp b/Source/Audio.cpp
index d88e887194..501a5ccc47 100644
--- a/Source/Audio.cpp
+++ b/Source/Audio.cpp
@@ -84,7 +84,7 @@ int audioCallback (const void *inputBuffer,
 //    int16_t *inputRight = ((int16_t **) inputBuffer)[1];
     
     if (inputLeft != NULL) {
-        data->audioSocket->send((char *) WORKCLUB_AUDIO_SERVER, 55443, (void *)inputLeft, BUFFER_LENGTH_BYTES);
+        data->audioSocket->send((char *) EC2_WEST_AUDIO_SERVER, 55443, (void *)inputLeft, BUFFER_LENGTH_BYTES);
     }
     
     int16_t *outputLeft = ((int16_t **) outputBuffer)[0];
@@ -376,7 +376,6 @@ error:
 void Audio::render()
 {
     if (initialized && !ECHO_SERVER_TEST) {
-        
         for (int s = 0; s < NUM_AUDIO_SOURCES; s++) {
             // render gl objects on screen for our sources
             glPushMatrix();
@@ -390,6 +389,57 @@ void Audio::render()
     }
 }
 
+void Audio::render(int screenWidth, int screenHeight)
+{
+    if (initialized && ECHO_SERVER_TEST) {
+        glBegin(GL_LINES);
+        glColor3f(1,1,1);
+        
+        int startX = 50.0;
+        int currentX = startX;
+        int topY = screenHeight - 90;
+        int bottomY = screenHeight - 50;
+        float frameWidth = 50.0;
+        float halfY = topY + ((bottomY - topY) / 2.0);
+        
+        // draw the lines for the base of the ring buffer
+        
+        glVertex2f(currentX, topY);
+        glVertex2f(currentX, bottomY);
+        
+        for (int i = 0; i < RING_BUFFER_FRAMES; i++) {
+            glVertex2f(currentX, halfY);
+            glVertex2f(currentX + frameWidth, halfY);
+            currentX += frameWidth;
+            
+            glVertex2f(currentX, topY);
+            glVertex2f(currentX, bottomY);
+        }
+        
+        // show the next audio buffer and end of last write position
+        int scaleLength = currentX - startX;
+        
+        float nextOutputSampleOffset = data->ringBuffer->nextOutput - data->ringBuffer->buffer;
+        float nextOutputX = startX + (nextOutputSampleOffset / RING_BUFFER_SIZE_SAMPLES) * scaleLength;
+        glColor3f(1, 0, 0);
+        glVertex2f(nextOutputX, topY);
+        glVertex2f(nextOutputX, bottomY);
+        
+        float endLastWriteSampleOffset = data->ringBuffer->endOfLastWrite - data->ringBuffer->buffer;
+        
+        if (data->ringBuffer->endOfLastWrite == NULL) {
+            endLastWriteSampleOffset = 0;
+        }
+        
+        float endLastWriteX = startX + (endLastWriteSampleOffset / RING_BUFFER_SIZE_SAMPLES) * scaleLength;
+        glColor3f(0, 1, 0);
+        glVertex2f(endLastWriteX, topY);
+        glVertex2f(endLastWriteX, bottomY);
+        
+        glEnd();
+    }
+}
+
 /**
  * Close the running audio stream, and deinitialize portaudio.
  * Should be called at the end of program execution.
diff --git a/Source/Audio.h b/Source/Audio.h
index 9889a0d783..f1c8ac1d8a 100644
--- a/Source/Audio.h
+++ b/Source/Audio.h
@@ -21,6 +21,7 @@ public:
     static bool init(Head* mainHead);
     
     static void render();
+    static void render(int screenWidth, int screenHeight);
     
     // terminates audio I/O
     static bool terminate(); 
diff --git a/Source/main.cpp b/Source/main.cpp
index 1dc89ffeee..60203ffd13 100644
--- a/Source/main.cpp
+++ b/Source/main.cpp
@@ -584,6 +584,7 @@ void display(void)
         glDisable(GL_LIGHTING);
 
         //lattice.render(WIDTH, HEIGHT);
+        Audio::render(WIDTH, HEIGHT);
 
         //drawvec3(100, 100, 0.15, 0, 1.0, 0, myHead.getPos(), 0, 1, 0);
         glPointParameterfvARB( GL_POINT_DISTANCE_ATTENUATION_ARB, pointer_attenuation_quadratic );