Merge "AudioResampler: Add mono stopband tests" (10eb0c33) · Commits · e / os / android_frameworks_av

services/audioflinger/tests/resampler_tests.cpp

+71 −2

Original line number	Diff line number	Diff line
		@@ -39,6 +39,17 @@
		#include "AudioResampler.h"
		#include "test_utils.h"

		template <typename T>
		static void printData(T *data, size_t size) {
		const size_t stride = 8;
		for (size_t i = 0; i < size; ) {
		for (size_t j = 0; j < stride && i < size; ++j) {
		std::cout << data[i++] << ' '; // extra space before newline
		}
		std::cout << '\n'; // or endl
		}
		}

		void resample(int channels, void *output,
		size_t outputFrames, const std::vector<size_t> &outputIncr,
		android::AudioBufferProvider provider, android::AudioResampler resampler)
		@@ -91,7 +102,7 @@ void testBufferIncrement(size_t channels, bool useFloat,

		// calculate the output size
		size_t outputFrames = ((int64_t) provider.getNumFrames() * outputFreq) / inputFreq;
		size_t outputFrameSize = channels * (useFloat ? sizeof(float) : sizeof(int32_t));
		size_t outputFrameSize = (channels == 1 ? 2 : channels) * (useFloat ? sizeof(float) : sizeof(int32_t));
		size_t outputSize = outputFrameSize * outputFrames;
		outputSize &= ~7;

		@@ -177,7 +188,7 @@ void testStopbandDownconversion(size_t channels,

		// calculate the output size
		size_t outputFrames = ((int64_t) provider.getNumFrames() * outputFreq) / inputFreq;
		size_t outputFrameSize = channels * sizeof(TO);
		size_t outputFrameSize = (channels == 1 ? 2 : channels) * sizeof(TO);
		size_t outputSize = outputFrameSize * outputFrames;
		outputSize &= ~7;

		@@ -204,6 +215,8 @@ void testStopbandDownconversion(size_t channels,
		const unsigned stopbandFrame = stopband * outputFreq / 1000.;

		// check each channel separately
		if (channels == 1) channels = 2; // workaround (mono duplicates output channel)

		for (size_t i = 0; i < channels; ++i) {
		double passbandEnergy = signalEnergy(out, out + passbandFrame * channels, channels);
		double stopbandEnergy = signalEnergy(out + stopbandFrame * channels,
		@@ -331,6 +344,34 @@ TEST(audioflinger_resampler, stopbandresponse_integer) {
		}
		}

		TEST(audioflinger_resampler, stopbandresponse_integer_mono) {
		// not all of these may work (old resamplers fail on downsampling)
		static const enum android::AudioResampler::src_quality kQualityArray[] = {
		//android::AudioResampler::LOW_QUALITY,
		//android::AudioResampler::MED_QUALITY,
		//android::AudioResampler::HIGH_QUALITY,
		//android::AudioResampler::VERY_HIGH_QUALITY,
		android::AudioResampler::DYN_LOW_QUALITY,
		android::AudioResampler::DYN_MED_QUALITY,
		android::AudioResampler::DYN_HIGH_QUALITY,
		};

		// in this test we assume a maximum transition band between 12kHz and 20kHz.
		// there must be at least 60dB relative attenuation between stopband and passband.
		for (size_t i = 0; i < ARRAY_SIZE(kQualityArray); ++i) {
		testStopbandDownconversion<int16_t, int32_t>(
		1, 48000, 32000, 12000, 20000, kQualityArray[i]);
		}

		// in this test we assume a maximum transition band between 7kHz and 15kHz.
		// there must be at least 60dB relative attenuation between stopband and passband.
		// (the weird ratio triggers interpolative resampling)
		for (size_t i = 0; i < ARRAY_SIZE(kQualityArray); ++i) {
		testStopbandDownconversion<int16_t, int32_t>(
		1, 48000, 22101, 7000, 15000, kQualityArray[i]);
		}
		}

		TEST(audioflinger_resampler, stopbandresponse_integer_multichannel) {
		// not all of these may work (old resamplers fail on downsampling)
		static const enum android::AudioResampler::src_quality kQualityArray[] = {
		@@ -387,6 +428,34 @@ TEST(audioflinger_resampler, stopbandresponse_float) {
		}
		}

		TEST(audioflinger_resampler, stopbandresponse_float_mono) {
		// not all of these may work (old resamplers fail on downsampling)
		static const enum android::AudioResampler::src_quality kQualityArray[] = {
		//android::AudioResampler::LOW_QUALITY,
		//android::AudioResampler::MED_QUALITY,
		//android::AudioResampler::HIGH_QUALITY,
		//android::AudioResampler::VERY_HIGH_QUALITY,
		android::AudioResampler::DYN_LOW_QUALITY,
		android::AudioResampler::DYN_MED_QUALITY,
		android::AudioResampler::DYN_HIGH_QUALITY,
		};

		// in this test we assume a maximum transition band between 12kHz and 20kHz.
		// there must be at least 60dB relative attenuation between stopband and passband.
		for (size_t i = 0; i < ARRAY_SIZE(kQualityArray); ++i) {
		testStopbandDownconversion<float, float>(
		1, 48000, 32000, 12000, 20000, kQualityArray[i]);
		}

		// in this test we assume a maximum transition band between 7kHz and 15kHz.
		// there must be at least 60dB relative attenuation between stopband and passband.
		// (the weird ratio triggers interpolative resampling)
		for (size_t i = 0; i < ARRAY_SIZE(kQualityArray); ++i) {
		testStopbandDownconversion<float, float>(
		1, 48000, 22101, 7000, 15000, kQualityArray[i]);
		}
		}

		TEST(audioflinger_resampler, stopbandresponse_float_multichannel) {
		// not all of these may work (old resamplers fail on downsampling)
		static const enum android::AudioResampler::src_quality kQualityArray[] = {