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
|
/* LV2 OSC Messages Extension
* Copyright (C) 2007-2009 David Robillard
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "lv2_osc.h"
#include "lv2_osc_print.h"
/*#ifndef BIG_ENDIAN
#ifndef LITTLE_ENDIAN
#warning This code requires BIG_ENDIAN or LITTLE_ENDIAN to be defined
#warning Assuming little endian. THIS MAY BREAK HORRIBLY!
#endif
#endif*/
#define lv2_osc_swap32(x) \
({ \
uint32_t __x = (x); \
((uint32_t)( \
(((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
(((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
(((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
(((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \
})
#define lv2_osc_swap64(x) \
({ \
uint64_t __x = (x); \
((uint64_t)( \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000000000ffULL) << 56) | \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000000000ff00ULL) << 40) | \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000ff000000ULL) << 8) | \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000ff00000000ULL) >> 8) | \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0xff00000000000000ULL) >> 56) )); \
})
/** Pad a size to a multiple of 32 bits */
inline static uint32_t
lv2_osc_pad_size(uint32_t size)
{
return size + 3 - ((size-1) % 4);
}
inline static uint32_t
lv2_osc_string_size(const char *s)
{
return lv2_osc_pad_size((uint32_t)strlen(s) + 1);
}
static inline uint32_t
lv2_osc_blob_size(const void* blob)
{
return sizeof(uint32_t) + lv2_osc_pad_size(*((uint32_t*)blob));
}
uint32_t
lv2_osc_arg_size(char type, const LV2_OSC_Argument* arg)
{
switch (type) {
case 'c':
case 'i':
case 'f':
case 'S': // Symbol (URI-mapped integer)
return 4;
case 'h':
case 'd':
return 8;
case 's':
return lv2_osc_string_size(&arg->s);
case 'b':
return lv2_osc_blob_size(&arg->b);
default:
fprintf(stderr, "Warning: unknown OSC type '%c'.", type);
return 0;
}
}
void
lv2_osc_argument_swap_byte_order(char type, LV2_OSC_Argument* arg)
{
switch (type) {
case 'i':
case 'f':
case 'b':
case 'c':
*(int32_t*)arg = lv2_osc_swap32(*(int32_t*)arg);
break;
case 'h':
case 'd':
*(int64_t*)arg = lv2_osc_swap64(*(int64_t*)arg);
break;
}
}
/** Convert a message from network byte order to host byte order. */
void
lv2_osc_message_swap_byte_order(LV2_OSC_Event* msg)
{
const char* const types = lv2_osc_get_types(msg);
for (uint32_t i=0; i < msg->argument_count; ++i)
lv2_osc_argument_swap_byte_order(types[i], lv2_osc_get_argument(msg, i));
}
/** Not realtime safe, returned value must be free()'d by caller. */
LV2_OSC_Event*
lv2_osc_message_new(const char* path, const char* types, ...)
{
/* FIXME: path only */
LV2_OSC_Event* result = malloc(sizeof(LV2_OSC_Event)
+ 4 + lv2_osc_string_size(path));
const uint32_t path_size = lv2_osc_string_size(path);
result->data_size = path_size + 4; // 4 for types
result->argument_count = 0;
result->types_offset = lv2_osc_string_size(path) + 1;
(&result->data)[result->types_offset - 1] = ',';
(&result->data)[result->types_offset] = '\0';
memcpy(&result->data, path, strlen(path) + 1);
return result;
}
/** Create a new LV2_OSC_Event from a raw OSC message.
*
* If \a out_buf is NULL, new memory will be allocated. Otherwise the returned
* value will be equal to buf, unless there is insufficient space in which
* case NULL is returned.
*/
LV2_OSC_Event*
lv2_osc_message_from_raw(uint32_t out_buf_size,
void* out_buf,
uint32_t raw_msg_size,
void* raw_msg)
{
const uint32_t message_header_size = (sizeof(uint32_t) * 4);
const uint32_t path_size = lv2_osc_string_size((char*)raw_msg);
const uint32_t types_len = strlen((char*)(raw_msg + path_size + 1));
uint32_t index_size = types_len * sizeof(uint32_t);
if (out_buf == NULL) {
out_buf_size = message_header_size + index_size + raw_msg_size;
out_buf = malloc((size_t)out_buf_size);
} else if (out_buf && out_buf_size < message_header_size + raw_msg_size) {
return NULL;
}
LV2_OSC_Event* write_loc = (LV2_OSC_Event*)(out_buf);
write_loc->argument_count = types_len;
write_loc->data_size = index_size + raw_msg_size;
// Copy raw message
memcpy(&write_loc->data + index_size, raw_msg, raw_msg_size);
write_loc->types_offset = index_size + path_size + 1;
const char* const types = lv2_osc_get_types(write_loc);
// Calculate/Write index
uint32_t args_base_offset = write_loc->types_offset + lv2_osc_string_size(types) - 1;
uint32_t arg_offset = 0;
for (uint32_t i=0; i < write_loc->argument_count; ++i) {
((uint32_t*)&write_loc->data)[i] = args_base_offset + arg_offset;
const LV2_OSC_Argument* const arg = (LV2_OSC_Argument*)(&write_loc->data + args_base_offset + arg_offset);
// Special case because size is still big-endian
#ifndef BIG_ENDIAN
if (types[i] == 'b') // special case because size is still big-endian
arg_offset += lv2_osc_swap32(*((int32_t*)arg));
else
#endif
arg_offset += lv2_osc_arg_size(types[i], arg);
}
/*printf("Index:\n");
for (uint32_t i=0; i < write_loc->argument_count; ++i) {
printf("%u ", ((uint32_t*)&write_loc->data)[i]);
}
printf("\n");
printf("Data:\n");
for (uint32_t i=0; i < (write_loc->argument_count * 4) + size; ++i) {
printf("%3u", i % 10);
}
printf("\n");
for (uint32_t i=0; i < (write_loc->argument_count * 4) + size; ++i) {
char c = *(((char*)&write_loc->data) + i);
if (c >= 32 && c <= 126)
printf("%3c", c);
else
printf("%3d", (int)c);
}
printf("\n");*/
// Swap to host byte order if necessary
#ifndef BIG_ENDIAN
lv2_osc_message_swap_byte_order(write_loc);
#endif
printf("Created message:\n");
lv2_osc_message_print(write_loc);
return write_loc;
}
|
