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
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
|
/*
* libraw1394 - library for raw access to the 1394 bus with the Linux subsystem.
*
* Copyright (C) 1999,2000 Andreas Bombe
*
* This library is licensed under the GNU Lesser General Public License (LGPL),
* version 2.1 or later. See the file COPYING.LIB in the distribution for
* details.
*/
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <getopt.h>
#include <errno.h>
#include <fcntl.h>
#include "../src/raw1394.h"
#define BUFFER 1000
#define PACKET_MAX 4096
u_int64_t listen_channels;
unsigned long which_port;
char *filename;
int file;
enum raw1394_iso_dma_recv_mode mode = RAW1394_DMA_DEFAULT;
void usage_exit(int exitcode)
{
fprintf(stderr,
"Usage: dumpiso [opts] [FILE]\n"
"Dump IEEE 1394 isochronous channels to FILE or standard output.\n"
"\n"
"-c --channels CHANNELS Listen on these channels; CHANNELS is either a\n"
" number X or a range X-Y.\n"
"-p --port PORT Choose 1394 chip PORT. (default: 0)\n"
"-h --help Show this help.\n"
);
exit(exitcode);
}
void parse_args(int argc, char **argv)
{
int i;
char *tail;
unsigned long chan1, chan2;
int c;
int index;
static struct option opts[] = {
{ "channels", required_argument, NULL, 'c' },
{ "port", required_argument, NULL, 'p' },
{ "help", no_argument, NULL, 'h' },
{ 0 }
};
while (1) {
c = getopt_long(argc, argv, "hc:p:", opts, &index);
if (c == -1) break;
switch (c) {
case 'c':
chan1 = strtoul(optarg, &tail, 10);
chan2 = chan1;
if (*tail) {
if (tail[0] != '-' || !tail[1]) {
fprintf(stderr,
"invalid argument to channels: %s\n",
optarg);
usage_exit(1);
}
tail++;
chan2 = strtoul(tail, &tail, 10);
if (*tail) {
fprintf(stderr,
"invalid argument to channels: %s\n",
optarg);
usage_exit(1);
}
} else {
mode = RAW1394_DMA_PACKET_PER_BUFFER;
}
if (chan2 < chan1) {
unsigned long x = chan1;
chan1 = chan2;
chan2 = x;
}
if (chan2 > 63) {
fprintf(stderr,
"invalid channel numbers: %s\n",
optarg);
exit(1);
}
for (i = chan1; i <= chan2; i++)
listen_channels |= 1ULL << i;
break;
case 'p':
which_port = strtoul(optarg, &tail, 10);
if (*tail) {
fprintf(stderr,
"invalid argument to port: %s\n",
optarg);
usage_exit(1);
}
break;
case 'h':
usage_exit(0);
case '?':
usage_exit(1);
default:
abort();
}
}
argv += optind;
argc -= optind;
if (argc > 1) {
fprintf(stderr, "Too many arguments.\n");
usage_exit(1);
}
if (argc) filename = *argv;
if (!listen_channels) listen_channels = ~0ULL;
}
void write_header()
{
static char header[32] = "1394 isodump v1";
int i;
for (i = 0; i < 8; i++)
header[i+16] = (listen_channels >> (56 - 8*i)) & 0xff;
i = 0;
while (i < 32) {
int ret;
ret = write(file, header + i, 32 - i);
if (ret < 0) {
perror("header write");
exit(1);
}
i += ret;
}
}
void open_dumpfile()
{
if (!filename || !filename[0] || (filename[0] == '-' && !filename[1])) {
file = fileno(stdout);
write_header();
return;
}
file = open(filename, O_CREAT | O_WRONLY, 0666);
if (file < 0) {
perror("dumpfile open");
exit(1);
}
ftruncate(file, 0);
write_header();
}
static enum raw1394_iso_disposition
iso_handler(raw1394handle_t handle, unsigned char *data,
unsigned int length, unsigned char channel,
unsigned char tag, unsigned char sy, unsigned int cycle,
unsigned int dropped)
{
int ret;
static unsigned int counter = 0;
if (++counter % 1000 == 0)
fprintf(stderr, "\r%uK packets", counter/1000);
/* write header */
write(file, &length, sizeof(length));
write(file, &channel, sizeof(channel));
write(file, &tag, sizeof(tag));
write(file, &sy, sizeof(sy));
sy = 0;
write(file, &sy, sizeof(sy));
while (length) {
ret = write(file, data, length);
if (ret < 0) {
perror("data write");
return RAW1394_ISO_ERROR;
}
length -= ret;
data += ret;
}
return RAW1394_ISO_OK;
}
int main(int argc, char **argv)
{
raw1394handle_t handle;
int i;
parse_args(argc, argv);
fprintf(stderr, "port: %ld\nchannels: %#016llx\nfile: %s\n", which_port,
listen_channels, filename);
handle = raw1394_new_handle();
if (!handle) {
if (!errno)
fprintf(stderr,
"No working kernel driver found.\n");
else
perror("raw1394_get_handle");
exit(1);
}
do {
if (raw1394_get_port_info(handle, NULL, 0) <= which_port) {
fprintf(stderr, "Port %ld does not exist.\n",
which_port);
exit(1);
}
raw1394_set_port(handle, which_port);
} while (errno == ESTALE);
if (errno) {
perror("raw1394_set_port");
exit(1);
}
open_dumpfile();
if (mode == RAW1394_DMA_DEFAULT) {
raw1394_iso_multichannel_recv_init(handle, iso_handler,
BUFFER, 2048, -1); /* >2048 makes rawiso stall! */
raw1394_iso_recv_set_channel_mask(handle, listen_channels);
} else for (i = 0; i < 64; i++) {
if (!(listen_channels & 1ULL << i))
continue;
raw1394_iso_recv_init(handle, iso_handler, BUFFER, PACKET_MAX,
i, mode, -1);
}
raw1394_iso_recv_start(handle, -1, -1, 0);
while (raw1394_loop_iterate(handle) == 0);
fprintf(stderr, "\n");
raw1394_iso_shutdown(handle);
raw1394_destroy_handle(handle);
return 0;
}
|
