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diff --git a/source/io/SampleSourcePcm.h b/source/io/SampleSourcePcm.h
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+//
+// SampleSourcePcm.h - MrsWatson
+// Created by Nik Reiman on 1/2/12.
+// Copyright (c) 2012 Teragon Audio. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// * Redistributions of source code must retain the above copyright notice,
+//   this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above copyright notice,
+//   this list of conditions and the following disclaimer in the documentation
+//   and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+
+#ifndef MrsWatson_InputSourcePcm_h
+#define MrsWatson_InputSourcePcm_h
+
+#include <stdio.h>
+
+#include "io/SampleSource.h"
+
+typedef struct {
+    boolByte isStream;
+    boolByte isLittleEndian;
+    FILE *fileHandle;
+    size_t dataBufferNumItems;
+    short *interlacedPcmDataBuffer;
+
+    ChannelCount numChannels;
+    SampleRate sampleRate;
+    unsigned short bitsPerSample;
+} SampleSourcePcmDataMembers;
+typedef SampleSourcePcmDataMembers *SampleSourcePcmData;
+// this struct is actually the structure we need, looks like name just redefined later. sampleRate, numChannels, need to check those.
+// ok awesome...so basically in order to check classes/structs, sometimes you have to look in the header file? yeah all structs and enums will be in header file
+// and what is an enum (compared to a struct?) enumeration of possible values for one variable. like TYPE_MP3 TYPE_WAV etc. weird ok no worries
+
+/**
+ * Read raw PCM data to a floating-point sample buffer
+ * @param self
+ * @param sampleBuffer
+ * @return Number of samples read
+ * http://ghghgh.us/VST/
+ * this documentation is still a bit tough for me to read
+ */
+size_t sampleSourcePcmRead(SampleSourcePcmData self, SampleBuffer sampleBuffer);
+
+/**
+ * Writes data from a sample buffer to a PCM output
+ * @param self
+ * @param sampleBuffer
+ * @return Number of samples written
+ */
+size_t sampleSourcePcmWrite(SampleSourcePcmData self, const SampleBuffer sampleBuffer);
+
+/**
+ * Set the sample rate to be used for raw PCM file operations. This is most
+ * relevant when writing a WAVE or a AIFF file, as the sample rate must be given
+ * in the file header.
+ * @param sampleSourcePtr
+ * @param sampleRate Sample rate, in Hertz
+ */
+void sampleSourcePcmSetSampleRate(void *sampleSourcePtr, double sampleRate);
+
+/**
+ * Set the number of channels to be used for raw PCM file operations. Like the
+ * sample, this is most relevant when writing a WAVE or a AIFF file.
+ * @param sampleSourcePtr
+ * @param numChannels Number of channels
+ */
+void sampleSourcePcmSetNumChannels(void *sampleSourcePtr, int numChannels);
+
+/**
+ * Free a PCM sample source and all associated data
+ * @param sampleSourceDataPtr Pointer to sample source data
+ */
+void freeSampleSourceDataPcm(void *sampleSourceDataPtr);
+
+#endif