samplerate and convolver cleanup

README.md

@@ -17,7 +17,9 @@ I rarely accept code contributions to Rack itself, so please notify me in advanc
 
 ## Setting up your development environment
 
-Rack's dependencies (GLEW, glfw, etc) do not need to be installed on your system, since specific versions are compiled locally during the build process. However, you need proper tools to build these dependencies.
+Before building Rack, you must install build dependencies provided by your system's package manager.
+Rack's own dependencies (GLEW, glfw, etc) do not need to be installed on your system, since specific versions are compiled locally during the build process.
+However, you need proper tools to build Rack and these dependencies.
 
 ### Mac
 

include/dsp/fir.hpp

@@ -102,7 +102,7 @@ struct RealTimeConvolver {
 	}
 
 	/** Applies reverb to input
-	input and output must be size blockSize
+	input and output must be of size `blockSize`
 	*/
 	void processBlock(const float *input, float *output) {
 		if (kernelBlocks == 0) {

include/dsp/samplerate.hpp

@@ -34,6 +34,7 @@ struct SampleRateConverter {
 		refreshState();
 	}
 
+	/** From 0 (worst, fastest) to 10 (best, slowest) */
 	void setQuality(int quality) {
 		if (quality == this->quality)
 			return;

include/util/math.hpp

@@ -18,6 +18,16 @@ namespace rack {
 // basic integer functions
 ////////////////////
 
+/** Returns true if x is odd */
+inline bool isOdd(int x) {
+	return x % 2 != 0;
+}
+
+/** Returns true if x is odd */
+inline bool isEven(int x) {
+	return x % 2 == 0;
+}
+
 /** Returns the minimum of `a` and `b` */
 inline int min(int a, int b) {
 	return (a < b) ? a : b;