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diff --git a/tests/params b/tests/params
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index 412c9c4..0000000
Binary files a/tests/params and /dev/null differ
diff --git a/tests/params.c b/tests/params.c
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index 1e72d87..0000000
--- a/tests/params.c
+++ /dev/null
@@ -1,299 +0,0 @@
-/*
- * hw_params.c - print hardware capabilities
- *
- * compile with: gcc -o hw_params hw_params.c -lasound
- */
-
-#include <stdio.h>
-#include <alsa/asoundlib.h>
-
-#define ARRAY_SIZE(a) (sizeof(a) / sizeof *(a))
-
-static const snd_pcm_access_t accesses[] = {
-		SND_PCM_ACCESS_MMAP_INTERLEAVED,
-		SND_PCM_ACCESS_MMAP_NONINTERLEAVED,
-		SND_PCM_ACCESS_MMAP_COMPLEX,
-		SND_PCM_ACCESS_RW_INTERLEAVED,
-		SND_PCM_ACCESS_RW_NONINTERLEAVED,
-};
-
-static const snd_pcm_format_t formats[] = {
-		SND_PCM_FORMAT_S8,
-		SND_PCM_FORMAT_U8,
-		SND_PCM_FORMAT_S16_LE,
-		SND_PCM_FORMAT_S16_BE,
-		SND_PCM_FORMAT_U16_LE,
-		SND_PCM_FORMAT_U16_BE,
-		SND_PCM_FORMAT_S24_LE,
-		SND_PCM_FORMAT_S24_BE,
-		SND_PCM_FORMAT_U24_LE,
-		SND_PCM_FORMAT_U24_BE,
-		SND_PCM_FORMAT_S32_LE,
-		SND_PCM_FORMAT_S32_BE,
-		SND_PCM_FORMAT_U32_LE,
-		SND_PCM_FORMAT_U32_BE,
-		SND_PCM_FORMAT_FLOAT_LE,
-		SND_PCM_FORMAT_FLOAT_BE,
-		SND_PCM_FORMAT_FLOAT64_LE,
-		SND_PCM_FORMAT_FLOAT64_BE,
-		SND_PCM_FORMAT_IEC958_SUBFRAME_LE,
-		SND_PCM_FORMAT_IEC958_SUBFRAME_BE,
-		SND_PCM_FORMAT_MU_LAW,
-		SND_PCM_FORMAT_A_LAW,
-		SND_PCM_FORMAT_IMA_ADPCM,
-		SND_PCM_FORMAT_MPEG,
-		SND_PCM_FORMAT_GSM,
-		SND_PCM_FORMAT_SPECIAL,
-		SND_PCM_FORMAT_S24_3LE,
-		SND_PCM_FORMAT_S24_3BE,
-		SND_PCM_FORMAT_U24_3LE,
-		SND_PCM_FORMAT_U24_3BE,
-		SND_PCM_FORMAT_S20_3LE,
-		SND_PCM_FORMAT_S20_3BE,
-		SND_PCM_FORMAT_U20_3LE,
-		SND_PCM_FORMAT_U20_3BE,
-		SND_PCM_FORMAT_S18_3LE,
-		SND_PCM_FORMAT_S18_3BE,
-		SND_PCM_FORMAT_U18_3LE,
-		SND_PCM_FORMAT_U18_3BE,
-};
-
-static const unsigned int rates[] = {
-		4000,
-		5512,
-		8000,
-		11025,
-		16000,
-		22050,
-		32000,
-		44100,
-		48000,
-		64000,
-		88200,
-		96000,
-		176400,
-		192000,
-};
-
-
-struct info_t {
-	int nChannels;
-	int channels[16];
-	int nRates;
-	int rates[ARRAY_SIZE(formats)];
-	int nFormats;
-	int formats[ARRAY_SIZE(rates)];
-};
-
-
-int checkPCM(const char *device_name,unsigned direction,struct info_t *info) {
-
-	snd_pcm_t *pcm;
-	int err = snd_pcm_open(&pcm, device_name, direction, SND_PCM_NONBLOCK);
-	if (err < 0) {
-		fprintf(stderr, "cannot open device '%s': %s\n", device_name, snd_strerror(err));
-		return 1;
-	}
-
-	snd_pcm_hw_params_t *params;
-	snd_pcm_hw_params_alloca(&params);
-	err = snd_pcm_hw_params_any(pcm, params);
-	if (err < 0) {
-		fprintf(stderr, "cannot get hardware parameters: %s\n", snd_strerror(err));
-		snd_pcm_close(pcm);
-		return 1;
-	}
-
-	unsigned min,max;
-	err = snd_pcm_hw_params_get_channels_min(params, &min);
-	if (err < 0) {
-		fprintf(stderr, "cannot get minimum channels count: %s\n", snd_strerror(err));
-		snd_pcm_close(pcm);
-		return 1;
-	}
-	err = snd_pcm_hw_params_get_channels_max(params, &max);
-	if (err < 0) {
-		fprintf(stderr, "cannot get maximum channels count: %s\n", snd_strerror(err));
-		snd_pcm_close(pcm);
-		return 1;
-	}
-
-	int nChannels=0;
-	for (int i = min; i <= max; ++i) {
-		if (!snd_pcm_hw_params_test_channels(pcm, params, i)) {
-			info->channels[nChannels++]=i;
-		}
-	}
-	info->nChannels=nChannels;
-
-	int nFormats=0;
-	for (int i = 0; i < ARRAY_SIZE(formats); ++i) {
-		if (!snd_pcm_hw_params_test_format(pcm, params, formats[i])) {
-			info->formats[nFormats++]=formats[i];
-		}
-	}
-	info->nFormats=nFormats;
-
-	int nRates=0;
-	for (int i = 0; i < ARRAY_SIZE(rates); ++i) {
-		if (!snd_pcm_hw_params_test_rate(pcm, params, rates[i], 0)) {
-			info->rates[nRates++]=rates[i];
-		}
-	}
-	info->nRates=nRates;
-
-
-	snd_pcm_close(pcm);
-	return 0;
-}
-
-int main(int argc, char *argv[])
-{
-	const char *device_name = "hw";
-	snd_pcm_t *pcm;
-	snd_pcm_hw_params_t *hw_params;
-	unsigned int i;
-	unsigned int min, max;
-	int any_rate;
-	int err;
-
-	if (argc > 1)
-		device_name = argv[1];
-
-	struct info_t info;
-	checkPCM(device_name,SND_PCM_STREAM_PLAYBACK,&info);
-
-	printf("Formats:");
-	for (int i = 0; i < info.nFormats; ++i) {
-		printf("%s ", snd_pcm_format_name(info.formats[i]));
-	}
-	putchar('\n');
-	printf("Rates:");
-	for (int i = 0; i < info.nRates; ++i) {
-		printf(" %u", info.rates[i]);
-	}
-	putchar('\n');
-
-	printf("Channels:");
-	for (int i = 0; i < info.nChannels; ++i) {
-		printf(" %u", info.channels[i]);
-	}
-	putchar('\n');
-
-
-	err = snd_pcm_open(&pcm, device_name, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
-	if (err < 0) {
-		fprintf(stderr, "cannot open device '%s': %s\n", device_name, snd_strerror(err));
-		return 1;
-	}
-
-	snd_pcm_hw_params_alloca(&hw_params);
-	err = snd_pcm_hw_params_any(pcm, hw_params);
-	if (err < 0) {
-		fprintf(stderr, "cannot get hardware parameters: %s\n", snd_strerror(err));
-		snd_pcm_close(pcm);
-		return 1;
-	}
-
-	printf("Device: %s (type: %s)\n", device_name, snd_pcm_type_name(snd_pcm_type(pcm)));
-
-	printf("Access types:");
-	for (i = 0; i < ARRAY_SIZE(accesses); ++i) {
-		if (!snd_pcm_hw_params_test_access(pcm, hw_params, accesses[i]))
-			printf(" %s", snd_pcm_access_name(accesses[i]));
-	}
-	putchar('\n');
-
-	printf("Formats:");
-	for (i = 0; i < ARRAY_SIZE(formats); ++i) {
-		if (!snd_pcm_hw_params_test_format(pcm, hw_params, formats[i])) {
-			printf(" %s", snd_pcm_format_name(formats[i]));
-		}
-
-	}
-	putchar('\n');
-
-	err = snd_pcm_hw_params_get_channels_min(hw_params, &min);
-	if (err < 0) {
-		fprintf(stderr, "cannot get minimum channels count: %s\n", snd_strerror(err));
-		snd_pcm_close(pcm);
-		return 1;
-	}
-	err = snd_pcm_hw_params_get_channels_max(hw_params, &max);
-	if (err < 0) {
-		fprintf(stderr, "cannot get maximum channels count: %s\n", snd_strerror(err));
-		snd_pcm_close(pcm);
-		return 1;
-	}
-	printf("Channels:");
-	for (i = min; i <= max; ++i) {
-		if (!snd_pcm_hw_params_test_channels(pcm, hw_params, i))
-			printf(" %u", i);
-	}
-	putchar('\n');
-
-	err = snd_pcm_hw_params_get_rate_min(hw_params, &min, NULL);
-	if (err < 0) {
-		fprintf(stderr, "cannot get minimum rate: %s\n", snd_strerror(err));
-		snd_pcm_close(pcm);
-		return 1;
-	}
-	err = snd_pcm_hw_params_get_rate_max(hw_params, &max, NULL);
-	if (err < 0) {
-		fprintf(stderr, "cannot get maximum rate: %s\n", snd_strerror(err));
-		snd_pcm_close(pcm);
-		return 1;
-	}
-	printf("Sample rates:");
-	if (min == max)
-		printf(" %u", min);
-	else if (!snd_pcm_hw_params_test_rate(pcm, hw_params, min + 1, 0))
-		printf(" %u-%u", min, max);
-	else {
-		any_rate = 0;
-		for (i = 0; i < ARRAY_SIZE(rates); ++i) {
-			if (!snd_pcm_hw_params_test_rate(pcm, hw_params, rates[i], 0)) {
-				any_rate = 1;
-				printf(" %u", rates[i]);
-			}
-		}
-		if (!any_rate)
-			printf(" %u-%u", min, max);
-	}
-	putchar('\n');
-
-	err = snd_pcm_hw_params_get_period_time_min(hw_params, &min, NULL);
-	if (err < 0) {
-		fprintf(stderr, "cannot get minimum period time: %s\n", snd_strerror(err));
-		snd_pcm_close(pcm);
-		return 1;
-	}
-	err = snd_pcm_hw_params_get_period_time_max(hw_params, &max, NULL);
-	if (err < 0) {
-		fprintf(stderr, "cannot get maximum period time: %s\n", snd_strerror(err));
-		snd_pcm_close(pcm);
-		return 1;
-	}
-	printf("Interrupt interval: %u-%u us\n", min, max);
-
-	err = snd_pcm_hw_params_get_buffer_time_min(hw_params, &min, NULL);
-	if (err < 0) {
-		fprintf(stderr, "cannot get minimum buffer time: %s\n", snd_strerror(err));
-		snd_pcm_close(pcm);
-		return 1;
-	}
-	err = snd_pcm_hw_params_get_buffer_time_max(hw_params, &max, NULL);
-	if (err < 0) {
-		fprintf(stderr, "cannot get maximum buffer time: %s\n", snd_strerror(err));
-		snd_pcm_close(pcm);
-		return 1;
-	}
-	printf("Buffer size: %u-%u us\n", min, max);
-
-	snd_pcm_close(pcm);
-
-
-	return 0;
-}
-
-