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authorMatthias P. Braendli <matthias.braendli@mpb.li>2014-07-07 22:34:08 +0200
committerMatthias P. Braendli <matthias.braendli@mpb.li>2014-07-07 22:34:08 +0200
commit4dc3f5aa76463250197f0a87145d37884509e9af (patch)
treec5ed5de31c552a254d2074bca17f347b1a5dfc4c /src/OutputMemory.cpp
parentc9ef2a5b36d9082b2c2c853934a0332aef6564a6 (diff)
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Add rudimentary sample histogram to OutputMemory
Diffstat (limited to 'src/OutputMemory.cpp')
-rw-r--r--src/OutputMemory.cpp38
1 files changed, 38 insertions, 0 deletions
diff --git a/src/OutputMemory.cpp b/src/OutputMemory.cpp
index b47729c..4fb8bc1 100644
--- a/src/OutputMemory.cpp
+++ b/src/OutputMemory.cpp
@@ -1,6 +1,11 @@
/*
Copyright (C) 2007, 2008, 2009, 2010, 2011 Her Majesty the Queen in
Right of Canada (Communications Research Center Canada)
+
+ Copyright (C) 2014
+ Matthias P. Braendli, matthias.braendli@mpb.li
+
+ http://opendigitalradio.org
*/
/*
This file is part of ODR-DabMod.
@@ -24,6 +29,7 @@
#include <stdexcept>
#include <string.h>
+#include <math.h>
OutputMemory::OutputMemory(Buffer* dataOut)
@@ -32,11 +38,29 @@ OutputMemory::OutputMemory(Buffer* dataOut)
PDEBUG("OutputMemory::OutputMemory(%p) @ %p\n", dataOut, this);
setOutput(dataOut);
+
+#if OUTPUT_MEM_HISTOGRAM
+ myMax = 0.0f;
+ for (int i = 0; i < HIST_BINS; i++) {
+ myHistogram[i] = 0.0f;
+ }
+#endif
}
OutputMemory::~OutputMemory()
{
+#if OUTPUT_MEM_HISTOGRAM
+ fprintf(stderr, "* OutputMemory max %f\n", myMax);
+ fprintf(stderr, "* HISTOGRAM\n");
+
+ for (int i = 0; i < HIST_BINS; i++) {
+ fprintf(stderr, "** %5d - %5d: %ld\n",
+ i * HIST_BIN_SIZE,
+ (i+1) * HIST_BIN_SIZE - 1,
+ myHistogram[i]);
+ }
+#endif
PDEBUG("OutputMemory::~OutputMemory() @ %p\n", this);
}
@@ -56,5 +80,19 @@ int OutputMemory::process(Buffer* dataIn, Buffer* dataOut)
*myDataOut = *dataIn;
+#if OUTPUT_MEM_HISTOGRAM
+ const float* in = (const float*)dataIn->getData();
+ const size_t len = dataIn->getLength() / sizeof(float);
+
+ for (size_t i = 0; i < len; i++) {
+ float absval = fabsf(in[i]);
+ if (myMax < absval)
+ myMax = absval;
+
+ myHistogram[lrintf(absval) / HIST_BIN_SIZE]++;
+ }
+#endif
+
return myDataOut->getLength();
}
+