blob: a0ab1ae41fa77b678c19d0aa7bced8375c93a916 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
#ifndef UTILS_H_
#define UTILS_H_
#include <math.h>
#include <stdint.h>
#define MIN(a,b) (((a)<(b))?(a):(b))
#define MAX(a,b) (((a)>(b))?(a):(b))
#define NUMOF(l) (sizeof(l) / sizeof(*l))
#define linear_to_dB(x) (log10(x) * 20)
/* Calculate the little string containing a bargraph
* 'VU-meter' from the peak value measured
*/
const char* level(int channel, int peak);
/* This defines the on-wire representation of a ZMQ message header.
*
* The data follows right after this header */
struct zmq_frame_header_t
{
uint16_t version; // we support version=1 now
uint16_t encoder; // see ZMQ_ENCODER_XYZ
/* length of the 'data' field */
uint32_t datasize;
/* Audio level, peak, linear PCM */
int16_t audiolevel_left;
int16_t audiolevel_right;
/* Data follows this header */
} __attribute__ ((packed));
#define ZMQ_ENCODER_FDK 1
#define ZMQ_ENCODER_TOOLAME 2
#define ZMQ_HEADER_SIZE sizeof(struct zmq_frame_header_t)
/* The expected frame size incl data of the given frame */
#define ZMQ_FRAME_SIZE(f) (sizeof(struct zmq_frame_header_t) + f->datasize)
#define ZMQ_FRAME_DATA(f) ( ((uint8_t*)f)+sizeof(struct zmq_frame_header_t) )
#endif
|
