Merge pull request #12 from robsoles/master

fixed updateCoefs(..) for other than set 0 coefficients

Audio.h

 #include "analyze_fft256.h"
 #include "analyze_print.h"
 #include "analyze_tonedetect.h"
+#include "analyze_peakdetect.h"
 #include "control_sgtl5000.h"
 #include "control_wm8731.h"
 #include "effect_chorus.h"

analyze_peakdetect.cpp

+/* Audio Library for Teensy 3.X
+ * Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
+ *
+ * Development of this audio library was funded by PJRC.COM, LLC by sales of
+ * Teensy and Audio Adaptor boards.  Please support PJRC's efforts to develop
+ * open source software by purchasing Teensy or other PJRC products.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice, development funding notice, and this permission
+ * notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "analyze_peakdetect.h"
+
+// #define PEAKREPORTVERBS
+
+void AudioPeak::update(void)
+{
+	audio_block_t *block;
+	const int16_t *p, *end;
+	block = receiveReadOnly();
+	if (!block) {
+#ifdef PEAKREPORTVERBS
+		Serial.println("AudioPeak !block");
+#endif
+		return;
+	}
+	if (!m_enabled) {
+		release(block);
+		return;
+	}
+	p = block->data;
+	end = p + AUDIO_BLOCK_SAMPLES;
+	do {
+		int16_t d=*p++;
+		if(d<min) min=d;
+		if(d>max) max=d;
+	} while (p < end);
+#ifdef PEAKREPORTVERBS
+	Serial.println("AudioPeak ran");
+#endif
+	release(block);
+}
+
+void AudioPeak::begin(bool noReset)
+{
+	if(!noReset)
+	{
+		min=0;
+		max=0;
+	}
+	m_enabled=true;
+}
+uint16_t AudioPeak::Dpp(void)
+{
+	return max-min;
+}
+

analyze_peakdetect.h

+/* Audio Library for Teensy 3.X
+ * Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
+ *
+ * Development of this audio library was funded by PJRC.COM, LLC by sales of
+ * Teensy and Audio Adaptor boards.  Please support PJRC's efforts to develop
+ * open source software by purchasing Teensy or other PJRC products.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice, development funding notice, and this permission
+ * notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef analyze_peakdetect_h_
+#define analyze_peakdetect_h_
+
+#include "AudioStream.h"
+
+class AudioPeak : public AudioStream
+{
+public:
+	AudioPeak(void) : AudioStream(1, inputQueueArray) { }
+
+	virtual void update(void);
+
+	void begin(bool noReset);
+	void begin(void) { begin(false); }
+	void stop(void) { m_enabled=false; }
+	uint16_t Dpp(void);
+private:
+	audio_block_t *inputQueueArray[1];
+	bool m_enabled;
+	int16_t max;
+	int16_t min;
+};
+
+#endif

filter_biquad.cpp

 	int32_t *state;
 	block = receiveWritable();
 	if (!block) return;
-	data = (uint32_t *)(block->data);
-	end = data + AUDIO_BLOCK_SAMPLES/2;
+	end = (uint32_t *)(block->data) + AUDIO_BLOCK_SAMPLES/2;
 	state = (int32_t *)definition;
 	do {
 		a0 = *state++;
 		aprev = *state++;
 		bprev = *state++;
 		sum = *state & 0x3FFF;
+		data = end - AUDIO_BLOCK_SAMPLES/2;
 		do {
 			in2 = *data;
 			sum = signed_multiply_accumulate_32x16b(sum, a0, in2);
 		*state++ = sum | flag;
 		*(state-2) = bprev;
 		*(state-3) = aprev;
-		data = (uint32_t *)(block->data); // needs to be reset, may as well be done here
 	} while (flag);
 	transmit(block);
 	release(block);
 	while(set)
 	{
 		*dest+=7;
-		if(!(*dest&0x80000000)) return;
+		if(!(*dest)&0x80000000) return;
 		*dest++;
 		set--;
 	}