1 #include <asn_application.h>
\r
2 #include <asn_internal.h>
\r
3 #include <per_encoder.h>
\r
5 static int _uper_encode_flush_outp(asn_per_outp_t *po);
\r
8 ignore_output(const void *data, size_t size, void *app_key) {
\r
16 uper_encode(const asn_TYPE_descriptor_t *td,
\r
17 const asn_per_constraints_t *constraints, const void *sptr,
\r
18 asn_app_consume_bytes_f *cb, void *app_key) {
\r
20 asn_enc_rval_t er = {0,0,0};
\r
23 * Invoke type-specific encoder.
\r
25 if(!td || !td->op->uper_encoder)
\r
26 ASN__ENCODE_FAILED; /* PER is not compiled in */
\r
28 po.buffer = po.tmpspace;
\r
30 po.nbits = 8 * sizeof(po.tmpspace);
\r
31 po.output = cb ? cb : ignore_output;
\r
32 po.op_key = app_key;
\r
33 po.flushed_bytes = 0;
\r
35 er = td->op->uper_encoder(td, constraints, sptr, &po);
\r
36 if(er.encoded != -1) {
\r
37 size_t bits_to_flush;
\r
39 bits_to_flush = ((po.buffer - po.tmpspace) << 3) + po.nboff;
\r
41 /* Set number of bits encoded to a firm value */
\r
42 er.encoded = (po.flushed_bytes << 3) + bits_to_flush;
\r
44 if(_uper_encode_flush_outp(&po)) ASN__ENCODE_FAILED;
\r
51 * Argument type and callback necessary for uper_encode_to_buffer().
\r
53 typedef struct enc_to_buf_arg {
\r
57 static int encode_to_buffer_cb(const void *buffer, size_t size, void *key) {
\r
58 enc_to_buf_arg *arg = (enc_to_buf_arg *)key;
\r
60 if(arg->left < size)
\r
61 return -1; /* Data exceeds the available buffer size */
\r
63 memcpy(arg->buffer, buffer, size);
\r
64 arg->buffer = ((char *)arg->buffer) + size;
\r
71 uper_encode_to_buffer(const asn_TYPE_descriptor_t *td,
\r
72 const asn_per_constraints_t *constraints,
\r
73 const void *sptr, void *buffer, size_t buffer_size) {
\r
76 key.buffer = buffer;
\r
77 key.left = buffer_size;
\r
79 if(td) ASN_DEBUG("Encoding \"%s\" using UNALIGNED PER", td->name);
\r
81 return uper_encode(td, constraints, sptr, encode_to_buffer_cb, &key);
\r
84 typedef struct enc_dyn_arg {
\r
90 encode_dyn_cb(const void *buffer, size_t size, void *key) {
\r
91 enc_dyn_arg *arg = key;
\r
92 if(arg->length + size >= arg->allocated) {
\r
93 size_t new_size = arg->allocated ? arg->allocated : 8;
\r
98 } while(arg->length + size >= new_size);
\r
100 p = REALLOC(arg->buffer, new_size);
\r
102 FREEMEM(arg->buffer);
\r
103 memset(arg, 0, sizeof(*arg));
\r
107 arg->allocated = new_size;
\r
109 memcpy(((char *)arg->buffer) + arg->length, buffer, size);
\r
110 arg->length += size;
\r
114 uper_encode_to_new_buffer(const asn_TYPE_descriptor_t *td,
\r
115 const asn_per_constraints_t *constraints,
\r
116 const void *sptr, void **buffer_r) {
\r
117 asn_enc_rval_t er = {0,0,0};
\r
120 memset(&key, 0, sizeof(key));
\r
122 er = uper_encode(td, constraints, sptr, encode_dyn_cb, &key);
\r
123 switch(er.encoded) {
\r
125 FREEMEM(key.buffer);
\r
128 FREEMEM(key.buffer);
\r
129 key.buffer = MALLOC(1);
\r
131 *(char *)key.buffer = '\0';
\r
132 *buffer_r = key.buffer;
\r
138 *buffer_r = key.buffer;
\r
139 ASN_DEBUG("Complete encoded in %ld bits", (long)er.encoded);
\r
140 return ((er.encoded + 7) >> 3);
\r
145 * Internally useful functions.
\r
148 /* Flush partially filled buffer */
\r
150 _uper_encode_flush_outp(asn_per_outp_t *po) {
\r
153 if(po->nboff == 0 && po->buffer == po->tmpspace)
\r
156 buf = po->buffer + (po->nboff >> 3);
\r
157 /* Make sure we account for the last, partially filled */
\r
158 if(po->nboff & 0x07) {
\r
159 buf[0] &= 0xff << (8 - (po->nboff & 0x07));
\r
163 return po->output(po->tmpspace, buf - po->tmpspace, po->op_key);
\r
167 aper_encode_to_buffer(const asn_TYPE_descriptor_t *td,
\r
168 const asn_per_constraints_t *constraints,
\r
169 const void *sptr, void *buffer, size_t buffer_size) {
\r
170 enc_to_buf_arg key;
\r
172 key.buffer = buffer;
\r
173 key.left = buffer_size;
\r
175 if(td) ASN_DEBUG("Encoding \"%s\" using ALIGNED PER", td->name);
\r
177 return aper_encode(td, constraints, sptr, encode_to_buffer_cb, &key);
\r
181 aper_encode_to_new_buffer(const asn_TYPE_descriptor_t *td,
\r
182 const asn_per_constraints_t *constraints,
\r
183 const void *sptr, void **buffer_r) {
\r
184 asn_enc_rval_t er = {0,0,0};
\r
187 memset(&key, 0, sizeof(key));
\r
189 er = aper_encode(td, constraints, sptr, encode_dyn_cb, &key);
\r
190 switch(er.encoded) {
\r
192 FREEMEM(key.buffer);
\r
195 FREEMEM(key.buffer);
\r
196 key.buffer = MALLOC(1);
\r
198 *(char *)key.buffer = '\0';
\r
199 *buffer_r = key.buffer;
\r
205 *buffer_r = key.buffer;
\r
206 ASN_DEBUG("Complete encoded in %ld bits", (long)er.encoded);
\r
207 return ((er.encoded + 7) >> 3);
\r
212 _aper_encode_flush_outp(asn_per_outp_t *po) {
\r
215 if(po->nboff == 0 && po->buffer == po->tmpspace)
\r
218 buf = po->buffer + (po->nboff >> 3);
\r
219 /* Make sure we account for the last, partially filled */
\r
220 if(po->nboff & 0x07) {
\r
221 buf[0] &= 0xff << (8 - (po->nboff & 0x07));
\r
226 return po->output(po->tmpspace, buf - po->tmpspace, po->op_key);
\r
232 aper_encode(const asn_TYPE_descriptor_t *td,
\r
233 const asn_per_constraints_t *constraints,
\r
234 const void *sptr, asn_app_consume_bytes_f *cb, void *app_key) {
\r
236 asn_enc_rval_t er = {0,0,0};
\r
239 * Invoke type-specific encoder.
\r
241 if(!td || !td->op->aper_encoder)
\r
242 ASN__ENCODE_FAILED; /* PER is not compiled in */
\r
244 po.buffer = po.tmpspace;
\r
246 po.nbits = 8 * sizeof(po.tmpspace);
\r
248 po.op_key = app_key;
\r
249 po.flushed_bytes = 0;
\r
251 er = td->op->aper_encoder(td, constraints, sptr, &po);
\r
252 if(er.encoded != -1) {
\r
253 size_t bits_to_flush;
\r
255 bits_to_flush = ((po.buffer - po.tmpspace) << 3) + po.nboff;
\r
257 /* Set number of bits encoded to a firm value */
\r
258 er.encoded = (po.flushed_bytes << 3) + bits_to_flush;
\r
260 if(_aper_encode_flush_outp(&po))
\r
261 ASN__ENCODE_FAILED;
\r