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added some simple staistic counters

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This commit is contained in:
Steffen Vogel 2010-11-11 22:04:43 +01:00
parent dc900c1c05
commit d2b0f46862
2 changed files with 32 additions and 66 deletions
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fnvum/fnvum
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fnvum/fnvum.c
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@ -1,85 +1,51 @@
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <math.h>
#include <pulse/simple.h>
#include <pulse/error.h>
#include <pulse/gccmacro.h>
#define BUFSIZE 1024
static ssize_t loop_write(int fd, const void*data, size_t size) {
ssize_t ret = 0;
while (size > 0) {
ssize_t r;
if ((r = write(fd, data, size)) < 0)
return r;
if (r == 0)
break;
ret += r;
data = (const uint8_t*) data + r;
size -= (size_t) r;
}
return ret;
}
#define BUFFER_SIZE 44100
#define DECAY 0.7
int main(int argc, char*argv[]) {
/* The sample type to use */
static const pa_sample_spec ss = {
.format = PA_SAMPLE_S16LE,
.rate = 44100,
.channels = 1
};
pa_simple *s = NULL;
int error;
/* The sample type to use */
static const pa_sample_spec ss = {
.format = PA_SAMPLE_S16LE,
.rate = 44100,
.channels = 1
};
/* Create the recording stream */
if (!(s = pa_simple_new(NULL, "fnordlicht VU Meter", PA_STREAM_RECORD, NULL, "record", &ss, NULL, NULL, &error))) {
fprintf(stderr, __FILE__": pa_simple_new() failed: %s\n", pa_strerror(error));
exit(-1);
}
pa_simple *s = NULL;
int error;
uint32_t level;
int16_t buffer[BUFFER_SIZE];
/* Create the recording stream */
if (!(s = pa_simple_new(NULL, "fnordlicht VU Meter", PA_STREAM_RECORD, NULL, "record", &ss, NULL, NULL, &error))) {
fprintf(stderr, __FILE__": pa_simple_new() failed: %s\n", pa_strerror(error));
exit(-1);
}
pa_simple_flush(s, &error); /* flush audio buffer */
for (;;) {
uint32_t level = 0;
for (int i = 0;i < 40;i++) {
int16_t buf[BUFSIZE];
/* Record some data ... */
if (pa_simple_read(s, buf, sizeof(buf), &error) < 0) {
fprintf(stderr, __FILE__": pa_simple_read() failed: %s\n", pa_strerror(error));
exit(-1);
}
/* for (int i = 0; i < sizeof(buf); i++) {
int16_t sample = *(buf+i);
if (sample < 0)
sample *= -1;
level += sample;
}*/
if (loop_write(STDOUT_FILENO, buf, sizeof(buf)) != sizeof(buf)) {
fprintf(stderr, __FILE__": write() failed: %s\n", strerror(errno));
exit(-1);
}
if (pa_simple_read(s, buffer, sizeof(buffer), &error) < 0) {
fprintf(stderr, __FILE__": pa_simple_read() failed: %s\n", pa_strerror(error));
exit(-1);
}
// printf("%i\n", level);
int16_t * pos, max = 0;
uint32_t sum = 0;
for (pos = buffer; pos - buffer < BUFFER_SIZE; pos++) {
sum += abs(*pos);
if (abs(*pos) > max) max = abs(*pos);
// printf("%d\n", abs(*pos));
}
printf("max: %d\nsum: %d\n", max, sum);
}
}