grapes / src / Chunkiser / output-stream-dummy.c @ 734f6960
History | View | Annotate | Download (1.84 KB)
1 |
/*
|
---|---|
2 |
* Copyright (c) 2010 Luca Abeni
|
3 |
*
|
4 |
* This is free software; see gpl-3.0.txt
|
5 |
*/
|
6 |
|
7 |
#include <stdint.h> |
8 |
#include <stdlib.h> |
9 |
#include <stdio.h> |
10 |
#include <string.h> |
11 |
|
12 |
#include "config.h" |
13 |
#include "dechunkiser_iface.h" |
14 |
|
15 |
enum output_type {
|
16 |
chunk_id, |
17 |
stats, |
18 |
}; |
19 |
|
20 |
struct dechunkiser_ctx {
|
21 |
enum output_type type;
|
22 |
int last_id;
|
23 |
int lost;
|
24 |
int first_id;
|
25 |
FILE *f; |
26 |
}; |
27 |
|
28 |
static struct dechunkiser_ctx *dummy_open(const char *fname, const char *config) |
29 |
{ |
30 |
struct dechunkiser_ctx *res;
|
31 |
struct tag *cfg_tags;
|
32 |
|
33 |
res = malloc(sizeof(struct dechunkiser_ctx)); |
34 |
if (res == NULL) { |
35 |
return NULL; |
36 |
} |
37 |
res->f = stdout; |
38 |
res->type = chunk_id; |
39 |
if (fname) {
|
40 |
res->f = fopen(fname, "w");
|
41 |
if (res->f == NULL) { |
42 |
res->f = stdout; |
43 |
} |
44 |
} |
45 |
res->last_id = -1;
|
46 |
res->lost = 0;
|
47 |
cfg_tags = config_parse(config); |
48 |
if (cfg_tags) {
|
49 |
const char *pt; |
50 |
|
51 |
pt = config_value_str(cfg_tags, "type");
|
52 |
if (pt) {
|
53 |
if (!strcmp(pt, "stats")) { |
54 |
res->type = stats; |
55 |
} |
56 |
} |
57 |
} |
58 |
free(cfg_tags); |
59 |
|
60 |
return res;
|
61 |
} |
62 |
|
63 |
static void dummy_write(struct dechunkiser_ctx *o, int id, uint8_t *data, int size) |
64 |
{ |
65 |
switch (o->type) {
|
66 |
case chunk_id:
|
67 |
fprintf(o->f, "Chunk %d: size %d\n", id, size);
|
68 |
break;
|
69 |
case stats:
|
70 |
if (o->last_id >= 0) { |
71 |
int i;
|
72 |
|
73 |
for (i = 1; i < id - o->last_id; i++) { |
74 |
o->lost++; |
75 |
fprintf(o->f, "Lost chunk %d\n", o->last_id + i);
|
76 |
} |
77 |
fprintf(o->f, "# Lost chunk ratio: %f\n", (double)o->lost / (double)(id - o->first_id)); |
78 |
} else {
|
79 |
o->first_id = id; |
80 |
} |
81 |
break;
|
82 |
default:
|
83 |
fprintf(stderr, "Internal error!\n");
|
84 |
exit(-1);
|
85 |
} |
86 |
fflush(o->f); |
87 |
o->last_id = id; |
88 |
} |
89 |
|
90 |
static void dummy_close(struct dechunkiser_ctx *s) |
91 |
{ |
92 |
free(s); |
93 |
} |
94 |
|
95 |
struct dechunkiser_iface out_dummy = {
|
96 |
.open = dummy_open, |
97 |
.write = dummy_write, |
98 |
.close = dummy_close, |
99 |
}; |