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00026 #include "asterisk.h"
00027
00028 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 180372 $")
00029
00030 #include <stdlib.h>
00031 #include <unistd.h>
00032 #include <string.h>
00033 #include <errno.h>
00034 #include <stdio.h>
00035
00036 #include "asterisk/lock.h"
00037 #include "asterisk/frame.h"
00038 #include "asterisk/logger.h"
00039 #include "asterisk/options.h"
00040 #include "asterisk/channel.h"
00041 #include "asterisk/cli.h"
00042 #include "asterisk/term.h"
00043 #include "asterisk/utils.h"
00044 #include "asterisk/threadstorage.h"
00045 #include "asterisk/linkedlists.h"
00046 #include "asterisk/translate.h"
00047 #include "asterisk/dsp.h"
00048 #include "asterisk/file.h"
00049
00050 #ifdef TRACE_FRAMES
00051 static int headers;
00052 static AST_LIST_HEAD_STATIC(headerlist, ast_frame);
00053 #endif
00054
00055 #if !defined(LOW_MEMORY)
00056 static void frame_cache_cleanup(void *data);
00057
00058
00059 AST_THREADSTORAGE_CUSTOM(frame_cache, frame_cache_init, frame_cache_cleanup);
00060
00061
00062
00063
00064
00065
00066
00067
00068
00069
00070 #define FRAME_CACHE_MAX_SIZE 10
00071
00072
00073
00074 AST_LIST_HEAD_NOLOCK(ast_frames, ast_frame);
00075
00076 struct ast_frame_cache {
00077 struct ast_frames list;
00078 size_t size;
00079 };
00080 #endif
00081
00082 #define SMOOTHER_SIZE 8000
00083
00084 enum frame_type {
00085 TYPE_HIGH,
00086 TYPE_LOW,
00087 TYPE_SILENCE,
00088 TYPE_DONTSEND
00089 };
00090
00091 #define TYPE_MASK 0x3
00092
00093 struct ast_smoother {
00094 int size;
00095 int format;
00096 int flags;
00097 float samplesperbyte;
00098 unsigned int opt_needs_swap:1;
00099 struct ast_frame f;
00100 struct timeval delivery;
00101 char data[SMOOTHER_SIZE];
00102 char framedata[SMOOTHER_SIZE + AST_FRIENDLY_OFFSET];
00103 struct ast_frame *opt;
00104 int len;
00105 };
00106
00107
00108 static struct ast_format_list AST_FORMAT_LIST[] = {
00109 { 1, AST_FORMAT_G723_1 , "g723" , "G.723.1", 24, 30, 300, 30, 30 },
00110 { 1, AST_FORMAT_GSM, "gsm" , "GSM", 33, 20, 300, 20, 20 },
00111 { 1, AST_FORMAT_ULAW, "ulaw", "G.711 u-law", 80, 10, 150, 10, 20 },
00112 { 1, AST_FORMAT_ALAW, "alaw", "G.711 A-law", 80, 10, 150, 10, 20 },
00113 { 1, AST_FORMAT_G726, "g726", "G.726 RFC3551", 40, 10, 300, 10, 20 },
00114 { 1, AST_FORMAT_ADPCM, "adpcm" , "ADPCM", 40, 10, 300, 10, 20 },
00115 { 1, AST_FORMAT_SLINEAR, "slin", "16 bit Signed Linear PCM", 160, 10, 70, 10, 20, AST_SMOOTHER_FLAG_BE },
00116 { 1, AST_FORMAT_LPC10, "lpc10", "LPC10", 7, 20, 20, 20, 20 },
00117 { 1, AST_FORMAT_G729A, "g729", "G.729A", 10, 10, 230, 10, 40, AST_SMOOTHER_FLAG_G729 },
00118 { 1, AST_FORMAT_SPEEX, "speex", "SpeeX", 10, 10, 60, 10, 20 },
00119 { 1, AST_FORMAT_ILBC, "ilbc", "iLBC", 50, 30, 30, 30, 30 },
00120 { 1, AST_FORMAT_G726_AAL2, "g726aal2", "G.726 AAL2", 40, 10, 300, 10, 20 },
00121 { 1, AST_FORMAT_G722, "g722", "G.722", 80, 10, 150, 10, 20 },
00122 { 0, 0, "nothing", "undefined" },
00123 { 0, 0, "nothing", "undefined" },
00124 { 0, 0, "nothing", "undefined" },
00125 { 0, 0, "nothing", "undefined" },
00126 { 0, AST_FORMAT_MAX_AUDIO, "maxaudio", "Maximum audio format" },
00127 { 1, AST_FORMAT_JPEG, "jpeg", "JPEG image"},
00128 { 1, AST_FORMAT_PNG, "png", "PNG image"},
00129 { 1, AST_FORMAT_H261, "h261", "H.261 Video" },
00130 { 1, AST_FORMAT_H263, "h263", "H.263 Video" },
00131 { 1, AST_FORMAT_H263_PLUS, "h263p", "H.263+ Video" },
00132 { 1, AST_FORMAT_H264, "h264", "H.264 Video" },
00133 { 0, 0, "nothing", "undefined" },
00134 { 0, 0, "nothing", "undefined" },
00135 { 0, 0, "nothing", "undefined" },
00136 { 0, AST_FORMAT_MAX_VIDEO, "maxvideo", "Maximum video format" },
00137 };
00138
00139 struct ast_frame ast_null_frame = { AST_FRAME_NULL, };
00140
00141 static int smoother_frame_feed(struct ast_smoother *s, struct ast_frame *f, int swap)
00142 {
00143 if (s->flags & AST_SMOOTHER_FLAG_G729) {
00144 if (s->len % 10) {
00145 ast_log(LOG_NOTICE, "Dropping extra frame of G.729 since we already have a VAD frame at the end\n");
00146 return 0;
00147 }
00148 }
00149 if (swap) {
00150 ast_swapcopy_samples(s->data + s->len, f->data, f->samples);
00151 } else {
00152 memcpy(s->data + s->len, f->data, f->datalen);
00153 }
00154
00155 if (!s->len || ast_tvzero(f->delivery) || ast_tvzero(s->delivery)) {
00156 s->delivery = f->delivery;
00157 }
00158 s->len += f->datalen;
00159
00160 return 0;
00161 }
00162
00163 void ast_smoother_reset(struct ast_smoother *s, int bytes)
00164 {
00165 memset(s, 0, sizeof(*s));
00166 s->size = bytes;
00167 }
00168
00169 void ast_smoother_reconfigure(struct ast_smoother *s, int bytes)
00170 {
00171
00172 if (s->size == bytes) {
00173 return;
00174 }
00175
00176 s->size = bytes;
00177
00178
00179
00180 if (!s->opt) {
00181 return;
00182 }
00183
00184
00185
00186
00187 smoother_frame_feed(s, s->opt, s->opt_needs_swap);
00188 s->opt = NULL;
00189 }
00190
00191 struct ast_smoother *ast_smoother_new(int size)
00192 {
00193 struct ast_smoother *s;
00194 if (size < 1)
00195 return NULL;
00196 if ((s = ast_malloc(sizeof(*s))))
00197 ast_smoother_reset(s, size);
00198 return s;
00199 }
00200
00201 int ast_smoother_get_flags(struct ast_smoother *s)
00202 {
00203 return s->flags;
00204 }
00205
00206 void ast_smoother_set_flags(struct ast_smoother *s, int flags)
00207 {
00208 s->flags = flags;
00209 }
00210
00211 int ast_smoother_test_flag(struct ast_smoother *s, int flag)
00212 {
00213 return (s->flags & flag);
00214 }
00215
00216 int __ast_smoother_feed(struct ast_smoother *s, struct ast_frame *f, int swap)
00217 {
00218 if (f->frametype != AST_FRAME_VOICE) {
00219 ast_log(LOG_WARNING, "Huh? Can't smooth a non-voice frame!\n");
00220 return -1;
00221 }
00222 if (!s->format) {
00223 s->format = f->subclass;
00224 s->samplesperbyte = (float)f->samples / (float)f->datalen;
00225 } else if (s->format != f->subclass) {
00226 ast_log(LOG_WARNING, "Smoother was working on %d format frames, now trying to feed %d?\n", s->format, f->subclass);
00227 return -1;
00228 }
00229 if (s->len + f->datalen > SMOOTHER_SIZE) {
00230 ast_log(LOG_WARNING, "Out of smoother space\n");
00231 return -1;
00232 }
00233 if (((f->datalen == s->size) ||
00234 ((f->datalen < 10) && (s->flags & AST_SMOOTHER_FLAG_G729))) &&
00235 !s->opt &&
00236 !s->len &&
00237 (f->offset >= AST_MIN_OFFSET)) {
00238
00239
00240
00241 if (swap)
00242 ast_swapcopy_samples(f->data, f->data, f->samples);
00243 s->opt = f;
00244 s->opt_needs_swap = swap ? 1 : 0;
00245 return 0;
00246 }
00247
00248 return smoother_frame_feed(s, f, swap);
00249 }
00250
00251 struct ast_frame *ast_smoother_read(struct ast_smoother *s)
00252 {
00253 struct ast_frame *opt;
00254 int len;
00255
00256
00257 if (s->opt) {
00258 if (s->opt->offset < AST_FRIENDLY_OFFSET)
00259 ast_log(LOG_WARNING, "Returning a frame of inappropriate offset (%d).\n",
00260 s->opt->offset);
00261 opt = s->opt;
00262 s->opt = NULL;
00263 return opt;
00264 }
00265
00266
00267 if (s->len < s->size) {
00268
00269 if (!((s->flags & AST_SMOOTHER_FLAG_G729) && (s->size % 10)))
00270 return NULL;
00271 }
00272 len = s->size;
00273 if (len > s->len)
00274 len = s->len;
00275
00276 s->f.frametype = AST_FRAME_VOICE;
00277 s->f.subclass = s->format;
00278 s->f.data = s->framedata + AST_FRIENDLY_OFFSET;
00279 s->f.offset = AST_FRIENDLY_OFFSET;
00280 s->f.datalen = len;
00281
00282 s->f.samples = len * s->samplesperbyte;
00283 s->f.delivery = s->delivery;
00284
00285 memcpy(s->f.data, s->data, len);
00286 s->len -= len;
00287
00288 if (s->len) {
00289
00290
00291 memmove(s->data, s->data + len, s->len);
00292 if (!ast_tvzero(s->delivery)) {
00293
00294 s->delivery = ast_tvadd(s->delivery, ast_samp2tv(s->f.samples, 8000));
00295 }
00296 }
00297
00298 return &s->f;
00299 }
00300
00301 void ast_smoother_free(struct ast_smoother *s)
00302 {
00303 free(s);
00304 }
00305
00306 static struct ast_frame *ast_frame_header_new(void)
00307 {
00308 struct ast_frame *f;
00309
00310 #if !defined(LOW_MEMORY)
00311 struct ast_frame_cache *frames;
00312
00313 if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) {
00314 if ((f = AST_LIST_REMOVE_HEAD(&frames->list, frame_list))) {
00315 size_t mallocd_len = f->mallocd_hdr_len;
00316 memset(f, 0, sizeof(*f));
00317 f->mallocd_hdr_len = mallocd_len;
00318 f->mallocd = AST_MALLOCD_HDR;
00319 frames->size--;
00320 return f;
00321 }
00322 }
00323 if (!(f = ast_calloc_cache(1, sizeof(*f))))
00324 return NULL;
00325 #else
00326 if (!(f = ast_calloc(1, sizeof(*f))))
00327 return NULL;
00328 #endif
00329
00330 f->mallocd_hdr_len = sizeof(*f);
00331 #ifdef TRACE_FRAMES
00332 AST_LIST_LOCK(&headerlist);
00333 headers++;
00334 AST_LIST_INSERT_HEAD(&headerlist, f, frame_list);
00335 AST_LIST_UNLOCK(&headerlist);
00336 #endif
00337
00338 return f;
00339 }
00340
00341 #if !defined(LOW_MEMORY)
00342 static void frame_cache_cleanup(void *data)
00343 {
00344 struct ast_frame_cache *frames = data;
00345 struct ast_frame *f;
00346
00347 while ((f = AST_LIST_REMOVE_HEAD(&frames->list, frame_list)))
00348 free(f);
00349
00350 free(frames);
00351 }
00352 #endif
00353
00354 void ast_frame_free(struct ast_frame *fr, int cache)
00355 {
00356 if (ast_test_flag(fr, AST_FRFLAG_FROM_TRANSLATOR)) {
00357 ast_translate_frame_freed(fr);
00358 } else if (ast_test_flag(fr, AST_FRFLAG_FROM_DSP)) {
00359 ast_dsp_frame_freed(fr);
00360 } else if (ast_test_flag(fr, AST_FRFLAG_FROM_FILESTREAM)) {
00361 ast_filestream_frame_freed(fr);
00362 }
00363
00364 if (!fr->mallocd)
00365 return;
00366
00367 #if !defined(LOW_MEMORY)
00368 if (cache && fr->mallocd == AST_MALLOCD_HDR) {
00369
00370
00371 struct ast_frame_cache *frames;
00372
00373 if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))
00374 && frames->size < FRAME_CACHE_MAX_SIZE) {
00375 AST_LIST_INSERT_HEAD(&frames->list, fr, frame_list);
00376 frames->size++;
00377 return;
00378 }
00379 }
00380 #endif
00381
00382 if (fr->mallocd & AST_MALLOCD_DATA) {
00383 if (fr->data)
00384 free(fr->data - fr->offset);
00385 }
00386 if (fr->mallocd & AST_MALLOCD_SRC) {
00387 if (fr->src)
00388 free((char *)fr->src);
00389 }
00390 if (fr->mallocd & AST_MALLOCD_HDR) {
00391 #ifdef TRACE_FRAMES
00392 AST_LIST_LOCK(&headerlist);
00393 headers--;
00394 AST_LIST_REMOVE(&headerlist, fr, frame_list);
00395 AST_LIST_UNLOCK(&headerlist);
00396 #endif
00397 free(fr);
00398 }
00399 }
00400
00401
00402
00403
00404
00405
00406 struct ast_frame *ast_frisolate(struct ast_frame *fr)
00407 {
00408 struct ast_frame *out;
00409 void *newdata;
00410
00411 ast_clear_flag(fr, AST_FRFLAG_FROM_TRANSLATOR);
00412 ast_clear_flag(fr, AST_FRFLAG_FROM_DSP);
00413
00414 if (!(fr->mallocd & AST_MALLOCD_HDR)) {
00415
00416 if (!(out = ast_frame_header_new()))
00417 return NULL;
00418 out->frametype = fr->frametype;
00419 out->subclass = fr->subclass;
00420 out->datalen = fr->datalen;
00421 out->samples = fr->samples;
00422 out->offset = fr->offset;
00423 out->data = fr->data;
00424
00425 ast_copy_flags(out, fr, AST_FRFLAG_HAS_TIMING_INFO);
00426 if (ast_test_flag(fr, AST_FRFLAG_HAS_TIMING_INFO)) {
00427 out->ts = fr->ts;
00428 out->len = fr->len;
00429 out->seqno = fr->seqno;
00430 }
00431 } else
00432 out = fr;
00433
00434 if (!(fr->mallocd & AST_MALLOCD_SRC)) {
00435 if (fr->src) {
00436 if (!(out->src = ast_strdup(fr->src))) {
00437 if (out != fr)
00438 free(out);
00439 return NULL;
00440 }
00441 }
00442 } else
00443 out->src = fr->src;
00444
00445 if (!(fr->mallocd & AST_MALLOCD_DATA)) {
00446 if (!(newdata = ast_malloc(fr->datalen + AST_FRIENDLY_OFFSET))) {
00447 if (out->src != fr->src)
00448 free((void *) out->src);
00449 if (out != fr)
00450 free(out);
00451 return NULL;
00452 }
00453 newdata += AST_FRIENDLY_OFFSET;
00454 out->offset = AST_FRIENDLY_OFFSET;
00455 out->datalen = fr->datalen;
00456 memcpy(newdata, fr->data, fr->datalen);
00457 out->data = newdata;
00458 }
00459
00460 out->mallocd = AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA;
00461
00462 return out;
00463 }
00464
00465 struct ast_frame *ast_frdup(const struct ast_frame *f)
00466 {
00467 struct ast_frame *out = NULL;
00468 int len, srclen = 0;
00469 void *buf = NULL;
00470
00471 #if !defined(LOW_MEMORY)
00472 struct ast_frame_cache *frames;
00473 #endif
00474
00475
00476 len = sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen;
00477
00478
00479
00480
00481
00482 if (f->src)
00483 srclen = strlen(f->src);
00484 if (srclen > 0)
00485 len += srclen + 1;
00486
00487 #if !defined(LOW_MEMORY)
00488 if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) {
00489 AST_LIST_TRAVERSE_SAFE_BEGIN(&frames->list, out, frame_list) {
00490 if (out->mallocd_hdr_len >= len) {
00491 size_t mallocd_len = out->mallocd_hdr_len;
00492 AST_LIST_REMOVE_CURRENT(&frames->list, frame_list);
00493 memset(out, 0, sizeof(*out));
00494 out->mallocd_hdr_len = mallocd_len;
00495 buf = out;
00496 frames->size--;
00497 break;
00498 }
00499 }
00500 AST_LIST_TRAVERSE_SAFE_END
00501 }
00502 #endif
00503
00504 if (!buf) {
00505 if (!(buf = ast_calloc_cache(1, len)))
00506 return NULL;
00507 out = buf;
00508 out->mallocd_hdr_len = len;
00509 }
00510
00511 out->frametype = f->frametype;
00512 out->subclass = f->subclass;
00513 out->datalen = f->datalen;
00514 out->samples = f->samples;
00515 out->delivery = f->delivery;
00516
00517
00518 out->mallocd = AST_MALLOCD_HDR;
00519 out->offset = AST_FRIENDLY_OFFSET;
00520 if (out->datalen) {
00521 out->data = buf + sizeof(*out) + AST_FRIENDLY_OFFSET;
00522 memcpy(out->data, f->data, out->datalen);
00523 }
00524 if (srclen > 0) {
00525
00526 char *src;
00527 out->src = buf + sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen;
00528 src = (char *) out->src;
00529
00530 strcpy(src, f->src);
00531 }
00532 ast_copy_flags(out, f, AST_FRFLAG_HAS_TIMING_INFO);
00533 out->ts = f->ts;
00534 out->len = f->len;
00535 out->seqno = f->seqno;
00536 return out;
00537 }
00538
00539 void ast_swapcopy_samples(void *dst, const void *src, int samples)
00540 {
00541 int i;
00542 unsigned short *dst_s = dst;
00543 const unsigned short *src_s = src;
00544
00545 for (i = 0; i < samples; i++)
00546 dst_s[i] = (src_s[i]<<8) | (src_s[i]>>8);
00547 }
00548
00549
00550 struct ast_format_list *ast_get_format_list_index(int index)
00551 {
00552 return &AST_FORMAT_LIST[index];
00553 }
00554
00555 struct ast_format_list *ast_get_format_list(size_t *size)
00556 {
00557 *size = (sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]));
00558 return AST_FORMAT_LIST;
00559 }
00560
00561 char* ast_getformatname(int format)
00562 {
00563 int x;
00564 char *ret = "unknown";
00565 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) {
00566 if(AST_FORMAT_LIST[x].visible && AST_FORMAT_LIST[x].bits == format) {
00567 ret = AST_FORMAT_LIST[x].name;
00568 break;
00569 }
00570 }
00571 return ret;
00572 }
00573
00574 char *ast_getformatname_multiple(char *buf, size_t size, int format)
00575 {
00576 int x;
00577 unsigned len;
00578 char *start, *end = buf;
00579
00580 if (!size)
00581 return buf;
00582 snprintf(end, size, "0x%x (", format);
00583 len = strlen(end);
00584 end += len;
00585 size -= len;
00586 start = end;
00587 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) {
00588 if (AST_FORMAT_LIST[x].visible && (AST_FORMAT_LIST[x].bits & format)) {
00589 snprintf(end, size,"%s|",AST_FORMAT_LIST[x].name);
00590 len = strlen(end);
00591 end += len;
00592 size -= len;
00593 }
00594 }
00595 if (start == end)
00596 snprintf(start, size, "nothing)");
00597 else if (size > 1)
00598 *(end -1) = ')';
00599 return buf;
00600 }
00601
00602 static struct ast_codec_alias_table {
00603 char *alias;
00604 char *realname;
00605 } ast_codec_alias_table[] = {
00606 { "slinear", "slin"},
00607 { "g723.1", "g723"},
00608 };
00609
00610 static const char *ast_expand_codec_alias(const char *in)
00611 {
00612 int x;
00613
00614 for (x = 0; x < sizeof(ast_codec_alias_table) / sizeof(ast_codec_alias_table[0]); x++) {
00615 if(!strcmp(in,ast_codec_alias_table[x].alias))
00616 return ast_codec_alias_table[x].realname;
00617 }
00618 return in;
00619 }
00620
00621 int ast_getformatbyname(const char *name)
00622 {
00623 int x, all, format = 0;
00624
00625 all = strcasecmp(name, "all") ? 0 : 1;
00626 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) {
00627 if(AST_FORMAT_LIST[x].visible && (all ||
00628 !strcasecmp(AST_FORMAT_LIST[x].name,name) ||
00629 !strcasecmp(AST_FORMAT_LIST[x].name,ast_expand_codec_alias(name)))) {
00630 format |= AST_FORMAT_LIST[x].bits;
00631 if(!all)
00632 break;
00633 }
00634 }
00635
00636 return format;
00637 }
00638
00639 char *ast_codec2str(int codec)
00640 {
00641 int x;
00642 char *ret = "unknown";
00643 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) {
00644 if(AST_FORMAT_LIST[x].visible && AST_FORMAT_LIST[x].bits == codec) {
00645 ret = AST_FORMAT_LIST[x].desc;
00646 break;
00647 }
00648 }
00649 return ret;
00650 }
00651
00652 static int show_codecs_deprecated(int fd, int argc, char *argv[])
00653 {
00654 int i, found=0;
00655 char hex[25];
00656
00657 if ((argc < 2) || (argc > 3))
00658 return RESULT_SHOWUSAGE;
00659
00660 if (!ast_opt_dont_warn)
00661 ast_cli(fd, "Disclaimer: this command is for informational purposes only.\n"
00662 "\tIt does not indicate anything about your configuration.\n");
00663
00664 ast_cli(fd, "%11s %9s %10s TYPE %8s %s\n","INT","BINARY","HEX","NAME","DESC");
00665 ast_cli(fd, "--------------------------------------------------------------------------------\n");
00666 if ((argc == 2) || (!strcasecmp(argv[1],"audio"))) {
00667 found = 1;
00668 for (i=0;i<13;i++) {
00669 snprintf(hex,25,"(0x%x)",1<<i);
00670 ast_cli(fd, "%11u (1 << %2d) %10s audio %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i));
00671 }
00672 }
00673
00674 if ((argc == 2) || (!strcasecmp(argv[1],"image"))) {
00675 found = 1;
00676 for (i=16;i<18;i++) {
00677 snprintf(hex,25,"(0x%x)",1<<i);
00678 ast_cli(fd, "%11u (1 << %2d) %10s image %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i));
00679 }
00680 }
00681
00682 if ((argc == 2) || (!strcasecmp(argv[1],"video"))) {
00683 found = 1;
00684 for (i=18;i<22;i++) {
00685 snprintf(hex,25,"(0x%x)",1<<i);
00686 ast_cli(fd, "%11u (1 << %2d) %10s video %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i));
00687 }
00688 }
00689
00690 if (! found)
00691 return RESULT_SHOWUSAGE;
00692 else
00693 return RESULT_SUCCESS;
00694 }
00695
00696 static int show_codecs(int fd, int argc, char *argv[])
00697 {
00698 int i, found=0;
00699 char hex[25];
00700
00701 if ((argc < 3) || (argc > 4))
00702 return RESULT_SHOWUSAGE;
00703
00704 if (!ast_opt_dont_warn)
00705 ast_cli(fd, "Disclaimer: this command is for informational purposes only.\n"
00706 "\tIt does not indicate anything about your configuration.\n");
00707
00708 ast_cli(fd, "%11s %9s %10s TYPE %8s %s\n","INT","BINARY","HEX","NAME","DESC");
00709 ast_cli(fd, "--------------------------------------------------------------------------------\n");
00710 if ((argc == 3) || (!strcasecmp(argv[3],"audio"))) {
00711 found = 1;
00712 for (i=0;i<13;i++) {
00713 snprintf(hex,25,"(0x%x)",1<<i);
00714 ast_cli(fd, "%11u (1 << %2d) %10s audio %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i));
00715 }
00716 }
00717
00718 if ((argc == 3) || (!strcasecmp(argv[3],"image"))) {
00719 found = 1;
00720 for (i=16;i<18;i++) {
00721 snprintf(hex,25,"(0x%x)",1<<i);
00722 ast_cli(fd, "%11u (1 << %2d) %10s image %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i));
00723 }
00724 }
00725
00726 if ((argc == 3) || (!strcasecmp(argv[3],"video"))) {
00727 found = 1;
00728 for (i=18;i<22;i++) {
00729 snprintf(hex,25,"(0x%x)",1<<i);
00730 ast_cli(fd, "%11u (1 << %2d) %10s video %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i));
00731 }
00732 }
00733
00734 if (! found)
00735 return RESULT_SHOWUSAGE;
00736 else
00737 return RESULT_SUCCESS;
00738 }
00739
00740 static char frame_show_codecs_usage[] =
00741 "Usage: core show codecs [audio|video|image]\n"
00742 " Displays codec mapping\n";
00743
00744 static int show_codec_n_deprecated(int fd, int argc, char *argv[])
00745 {
00746 int codec, i, found=0;
00747
00748 if (argc != 3)
00749 return RESULT_SHOWUSAGE;
00750
00751 if (sscanf(argv[2],"%d",&codec) != 1)
00752 return RESULT_SHOWUSAGE;
00753
00754 for (i = 0; i < 32; i++)
00755 if (codec & (1 << i)) {
00756 found = 1;
00757 ast_cli(fd, "%11u (1 << %2d) %s\n",1 << i,i,ast_codec2str(1<<i));
00758 }
00759
00760 if (!found)
00761 ast_cli(fd, "Codec %d not found\n", codec);
00762
00763 return RESULT_SUCCESS;
00764 }
00765
00766 static int show_codec_n(int fd, int argc, char *argv[])
00767 {
00768 int codec, i, found=0;
00769
00770 if (argc != 4)
00771 return RESULT_SHOWUSAGE;
00772
00773 if (sscanf(argv[3],"%d",&codec) != 1)
00774 return RESULT_SHOWUSAGE;
00775
00776 for (i = 0; i < 32; i++)
00777 if (codec & (1 << i)) {
00778 found = 1;
00779 ast_cli(fd, "%11u (1 << %2d) %s\n",1 << i,i,ast_codec2str(1<<i));
00780 }
00781
00782 if (!found)
00783 ast_cli(fd, "Codec %d not found\n", codec);
00784
00785 return RESULT_SUCCESS;
00786 }
00787
00788 static char frame_show_codec_n_usage[] =
00789 "Usage: core show codec <number>\n"
00790 " Displays codec mapping\n";
00791
00792
00793 void ast_frame_dump(const char *name, struct ast_frame *f, char *prefix)
00794 {
00795 const char noname[] = "unknown";
00796 char ftype[40] = "Unknown Frametype";
00797 char cft[80];
00798 char subclass[40] = "Unknown Subclass";
00799 char csub[80];
00800 char moreinfo[40] = "";
00801 char cn[60];
00802 char cp[40];
00803 char cmn[40];
00804
00805 if (!name)
00806 name = noname;
00807
00808
00809 if (!f) {
00810 ast_verbose("%s [ %s (NULL) ] [%s]\n",
00811 term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)),
00812 term_color(cft, "HANGUP", COLOR_BRRED, COLOR_BLACK, sizeof(cft)),
00813 term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn)));
00814 return;
00815 }
00816
00817 if (f->frametype == AST_FRAME_VOICE)
00818 return;
00819 if (f->frametype == AST_FRAME_VIDEO)
00820 return;
00821 switch(f->frametype) {
00822 case AST_FRAME_DTMF_BEGIN:
00823 strcpy(ftype, "DTMF Begin");
00824 subclass[0] = f->subclass;
00825 subclass[1] = '\0';
00826 break;
00827 case AST_FRAME_DTMF_END:
00828 strcpy(ftype, "DTMF End");
00829 subclass[0] = f->subclass;
00830 subclass[1] = '\0';
00831 break;
00832 case AST_FRAME_CONTROL:
00833 strcpy(ftype, "Control");
00834 switch(f->subclass) {
00835 case AST_CONTROL_HANGUP:
00836 strcpy(subclass, "Hangup");
00837 break;
00838 case AST_CONTROL_RING:
00839 strcpy(subclass, "Ring");
00840 break;
00841 case AST_CONTROL_RINGING:
00842 strcpy(subclass, "Ringing");
00843 break;
00844 case AST_CONTROL_ANSWER:
00845 strcpy(subclass, "Answer");
00846 break;
00847 case AST_CONTROL_BUSY:
00848 strcpy(subclass, "Busy");
00849 break;
00850 case AST_CONTROL_TAKEOFFHOOK:
00851 strcpy(subclass, "Take Off Hook");
00852 break;
00853 case AST_CONTROL_OFFHOOK:
00854 strcpy(subclass, "Line Off Hook");
00855 break;
00856 case AST_CONTROL_CONGESTION:
00857 strcpy(subclass, "Congestion");
00858 break;
00859 case AST_CONTROL_FLASH:
00860 strcpy(subclass, "Flash");
00861 break;
00862 case AST_CONTROL_WINK:
00863 strcpy(subclass, "Wink");
00864 break;
00865 case AST_CONTROL_OPTION:
00866 strcpy(subclass, "Option");
00867 break;
00868 case AST_CONTROL_RADIO_KEY:
00869 strcpy(subclass, "Key Radio");
00870 break;
00871 case AST_CONTROL_RADIO_UNKEY:
00872 strcpy(subclass, "Unkey Radio");
00873 break;
00874 case AST_CONTROL_PROGRESS:
00875 strcpy(subclass, "Call Progress");
00876 break;
00877 case AST_CONTROL_PROCEEDING:
00878 strcpy(subclass, "Proceeding");
00879 break;
00880 case AST_CONTROL_HOLD:
00881 strcpy(subclass, "Hold");
00882 break;
00883 case AST_CONTROL_UNHOLD:
00884 strcpy(subclass, "UnHold");
00885 break;
00886 case -1:
00887 strcpy(subclass, "Stop generators");
00888 break;
00889 default:
00890 snprintf(subclass, sizeof(subclass), "Unknown control '%d'", f->subclass);
00891 }
00892 break;
00893 case AST_FRAME_NULL:
00894 strcpy(ftype, "Null Frame");
00895 strcpy(subclass, "N/A");
00896 break;
00897 case AST_FRAME_IAX:
00898
00899 strcpy(ftype, "IAX Specific");
00900 snprintf(subclass, sizeof(subclass), "IAX Frametype %d", f->subclass);
00901 break;
00902 case AST_FRAME_TEXT:
00903 strcpy(ftype, "Text");
00904 strcpy(subclass, "N/A");
00905 ast_copy_string(moreinfo, f->data, sizeof(moreinfo));
00906 break;
00907 case AST_FRAME_IMAGE:
00908 strcpy(ftype, "Image");
00909 snprintf(subclass, sizeof(subclass), "Image format %s\n", ast_getformatname(f->subclass));
00910 break;
00911 case AST_FRAME_HTML:
00912 strcpy(ftype, "HTML");
00913 switch(f->subclass) {
00914 case AST_HTML_URL:
00915 strcpy(subclass, "URL");
00916 ast_copy_string(moreinfo, f->data, sizeof(moreinfo));
00917 break;
00918 case AST_HTML_DATA:
00919 strcpy(subclass, "Data");
00920 break;
00921 case AST_HTML_BEGIN:
00922 strcpy(subclass, "Begin");
00923 break;
00924 case AST_HTML_END:
00925 strcpy(subclass, "End");
00926 break;
00927 case AST_HTML_LDCOMPLETE:
00928 strcpy(subclass, "Load Complete");
00929 break;
00930 case AST_HTML_NOSUPPORT:
00931 strcpy(subclass, "No Support");
00932 break;
00933 case AST_HTML_LINKURL:
00934 strcpy(subclass, "Link URL");
00935 ast_copy_string(moreinfo, f->data, sizeof(moreinfo));
00936 break;
00937 case AST_HTML_UNLINK:
00938 strcpy(subclass, "Unlink");
00939 break;
00940 case AST_HTML_LINKREJECT:
00941 strcpy(subclass, "Link Reject");
00942 break;
00943 default:
00944 snprintf(subclass, sizeof(subclass), "Unknown HTML frame '%d'\n", f->subclass);
00945 break;
00946 }
00947 break;
00948 case AST_FRAME_MODEM:
00949 strcpy(ftype, "Modem");
00950 switch (f->subclass) {
00951 case AST_MODEM_T38:
00952 strcpy(subclass, "T.38");
00953 break;
00954 case AST_MODEM_V150:
00955 strcpy(subclass, "V.150");
00956 break;
00957 default:
00958 snprintf(subclass, sizeof(subclass), "Unknown MODEM frame '%d'\n", f->subclass);
00959 break;
00960 }
00961 break;
00962 default:
00963 snprintf(ftype, sizeof(ftype), "Unknown Frametype '%d'", f->frametype);
00964 }
00965 if (!ast_strlen_zero(moreinfo))
00966 ast_verbose("%s [ TYPE: %s (%d) SUBCLASS: %s (%d) '%s' ] [%s]\n",
00967 term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)),
00968 term_color(cft, ftype, COLOR_BRRED, COLOR_BLACK, sizeof(cft)),
00969 f->frametype,
00970 term_color(csub, subclass, COLOR_BRCYAN, COLOR_BLACK, sizeof(csub)),
00971 f->subclass,
00972 term_color(cmn, moreinfo, COLOR_BRGREEN, COLOR_BLACK, sizeof(cmn)),
00973 term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn)));
00974 else
00975 ast_verbose("%s [ TYPE: %s (%d) SUBCLASS: %s (%d) ] [%s]\n",
00976 term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)),
00977 term_color(cft, ftype, COLOR_BRRED, COLOR_BLACK, sizeof(cft)),
00978 f->frametype,
00979 term_color(csub, subclass, COLOR_BRCYAN, COLOR_BLACK, sizeof(csub)),
00980 f->subclass,
00981 term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn)));
00982 }
00983
00984
00985 #ifdef TRACE_FRAMES
00986 static int show_frame_stats(int fd, int argc, char *argv[])
00987 {
00988 struct ast_frame *f;
00989 int x=1;
00990 if (argc != 4)
00991 return RESULT_SHOWUSAGE;
00992 AST_LIST_LOCK(&headerlist);
00993 ast_cli(fd, " Framer Statistics \n");
00994 ast_cli(fd, "---------------------------\n");
00995 ast_cli(fd, "Total allocated headers: %d\n", headers);
00996 ast_cli(fd, "Queue Dump:\n");
00997 AST_LIST_TRAVERSE(&headerlist, f, frame_list)
00998 ast_cli(fd, "%d. Type %d, subclass %d from %s\n", x++, f->frametype, f->subclass, f->src ? f->src : "<Unknown>");
00999 AST_LIST_UNLOCK(&headerlist);
01000 return RESULT_SUCCESS;
01001 }
01002
01003 static char frame_stats_usage[] =
01004 "Usage: core show frame stats\n"
01005 " Displays debugging statistics from framer\n";
01006 #endif
01007
01008
01009 static struct ast_cli_entry cli_show_codecs = {
01010 { "show", "codecs", NULL },
01011 show_codecs_deprecated, NULL,
01012 NULL };
01013
01014 static struct ast_cli_entry cli_show_audio_codecs = {
01015 { "show", "audio", "codecs", NULL },
01016 show_codecs_deprecated, NULL,
01017 NULL };
01018
01019 static struct ast_cli_entry cli_show_video_codecs = {
01020 { "show", "video", "codecs", NULL },
01021 show_codecs_deprecated, NULL,
01022 NULL };
01023
01024 static struct ast_cli_entry cli_show_image_codecs = {
01025 { "show", "image", "codecs", NULL },
01026 show_codecs_deprecated, NULL,
01027 NULL };
01028
01029 static struct ast_cli_entry cli_show_codec = {
01030 { "show", "codec", NULL },
01031 show_codec_n_deprecated, NULL,
01032 NULL };
01033
01034 #ifdef TRACE_FRAMES
01035 static struct ast_cli_entry cli_show_frame_stats = {
01036 { "show", "frame", "stats", NULL },
01037 show_frame_stats, NULL,
01038 NULL };
01039 #endif
01040
01041 static struct ast_cli_entry my_clis[] = {
01042 { { "core", "show", "codecs", NULL },
01043 show_codecs, "Displays a list of codecs",
01044 frame_show_codecs_usage, NULL, &cli_show_codecs },
01045
01046 { { "core", "show", "audio", "codecs", NULL },
01047 show_codecs, "Displays a list of audio codecs",
01048 frame_show_codecs_usage, NULL, &cli_show_audio_codecs },
01049
01050 { { "core", "show", "video", "codecs", NULL },
01051 show_codecs, "Displays a list of video codecs",
01052 frame_show_codecs_usage, NULL, &cli_show_video_codecs },
01053
01054 { { "core", "show", "image", "codecs", NULL },
01055 show_codecs, "Displays a list of image codecs",
01056 frame_show_codecs_usage, NULL, &cli_show_image_codecs },
01057
01058 { { "core", "show", "codec", NULL },
01059 show_codec_n, "Shows a specific codec",
01060 frame_show_codec_n_usage, NULL, &cli_show_codec },
01061
01062 #ifdef TRACE_FRAMES
01063 { { "core", "show", "frame", "stats", NULL },
01064 show_frame_stats, "Shows frame statistics",
01065 frame_stats_usage, NULL, &cli_show_frame_stats },
01066 #endif
01067 };
01068
01069 int init_framer(void)
01070 {
01071 ast_cli_register_multiple(my_clis, sizeof(my_clis) / sizeof(struct ast_cli_entry));
01072 return 0;
01073 }
01074
01075 void ast_codec_pref_convert(struct ast_codec_pref *pref, char *buf, size_t size, int right)
01076 {
01077 int x, differential = (int) 'A', mem;
01078 char *from, *to;
01079
01080 if(right) {
01081 from = pref->order;
01082 to = buf;
01083 mem = size;
01084 } else {
01085 to = pref->order;
01086 from = buf;
01087 mem = 32;
01088 }
01089
01090 memset(to, 0, mem);
01091 for (x = 0; x < 32 ; x++) {
01092 if(!from[x])
01093 break;
01094 to[x] = right ? (from[x] + differential) : (from[x] - differential);
01095 }
01096 }
01097
01098 int ast_codec_pref_string(struct ast_codec_pref *pref, char *buf, size_t size)
01099 {
01100 int x, codec;
01101 size_t total_len, slen;
01102 char *formatname;
01103
01104 memset(buf,0,size);
01105 total_len = size;
01106 buf[0] = '(';
01107 total_len--;
01108 for(x = 0; x < 32 ; x++) {
01109 if(total_len <= 0)
01110 break;
01111 if(!(codec = ast_codec_pref_index(pref,x)))
01112 break;
01113 if((formatname = ast_getformatname(codec))) {
01114 slen = strlen(formatname);
01115 if(slen > total_len)
01116 break;
01117 strncat(buf, formatname, total_len - 1);
01118 total_len -= slen;
01119 }
01120 if(total_len && x < 31 && ast_codec_pref_index(pref , x + 1)) {
01121 strncat(buf, "|", total_len - 1);
01122 total_len--;
01123 }
01124 }
01125 if(total_len) {
01126 strncat(buf, ")", total_len - 1);
01127 total_len--;
01128 }
01129
01130 return size - total_len;
01131 }
01132
01133 int ast_codec_pref_index(struct ast_codec_pref *pref, int index)
01134 {
01135 int slot = 0;
01136
01137
01138 if((index >= 0) && (index < sizeof(pref->order))) {
01139 slot = pref->order[index];
01140 }
01141
01142 return slot ? AST_FORMAT_LIST[slot-1].bits : 0;
01143 }
01144
01145
01146 void ast_codec_pref_remove(struct ast_codec_pref *pref, int format)
01147 {
01148 struct ast_codec_pref oldorder;
01149 int x, y = 0;
01150 int slot;
01151 int size;
01152
01153 if(!pref->order[0])
01154 return;
01155
01156 memcpy(&oldorder, pref, sizeof(oldorder));
01157 memset(pref, 0, sizeof(*pref));
01158
01159 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) {
01160 slot = oldorder.order[x];
01161 size = oldorder.framing[x];
01162 if(! slot)
01163 break;
01164 if(AST_FORMAT_LIST[slot-1].bits != format) {
01165 pref->order[y] = slot;
01166 pref->framing[y++] = size;
01167 }
01168 }
01169
01170 }
01171
01172
01173 int ast_codec_pref_append(struct ast_codec_pref *pref, int format)
01174 {
01175 int x, newindex = 0;
01176
01177 ast_codec_pref_remove(pref, format);
01178
01179 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) {
01180 if(AST_FORMAT_LIST[x].bits == format) {
01181 newindex = x + 1;
01182 break;
01183 }
01184 }
01185
01186 if(newindex) {
01187 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) {
01188 if(!pref->order[x]) {
01189 pref->order[x] = newindex;
01190 break;
01191 }
01192 }
01193 }
01194
01195 return x;
01196 }
01197
01198
01199 void ast_codec_pref_prepend(struct ast_codec_pref *pref, int format, int only_if_existing)
01200 {
01201 int x, newindex = 0;
01202
01203
01204 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) {
01205 if (AST_FORMAT_LIST[x].bits == format) {
01206 newindex = x + 1;
01207 break;
01208 }
01209 }
01210
01211 if (!newindex)
01212 return;
01213
01214
01215 for (x = 0; x < 32; x++) {
01216 if (!pref->order[x] || pref->order[x] == newindex)
01217 break;
01218 }
01219
01220 if (only_if_existing && !pref->order[x])
01221 return;
01222
01223
01224
01225 for (; x > 0; x--) {
01226 pref->order[x] = pref->order[x - 1];
01227 pref->framing[x] = pref->framing[x - 1];
01228 }
01229
01230
01231 pref->order[0] = newindex;
01232 pref->framing[0] = 0;
01233 }
01234
01235
01236 int ast_codec_pref_setsize(struct ast_codec_pref *pref, int format, int framems)
01237 {
01238 int x, index = -1;
01239
01240 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) {
01241 if(AST_FORMAT_LIST[x].bits == format) {
01242 index = x;
01243 break;
01244 }
01245 }
01246
01247 if(index < 0)
01248 return -1;
01249
01250
01251 if(!framems)
01252 framems = AST_FORMAT_LIST[index].def_ms;
01253
01254 if(AST_FORMAT_LIST[index].inc_ms && framems % AST_FORMAT_LIST[index].inc_ms)
01255 framems -= framems % AST_FORMAT_LIST[index].inc_ms;
01256
01257 if(framems < AST_FORMAT_LIST[index].min_ms)
01258 framems = AST_FORMAT_LIST[index].min_ms;
01259
01260 if(framems > AST_FORMAT_LIST[index].max_ms)
01261 framems = AST_FORMAT_LIST[index].max_ms;
01262
01263
01264 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) {
01265 if(pref->order[x] == (index + 1)) {
01266 pref->framing[x] = framems;
01267 break;
01268 }
01269 }
01270
01271 return x;
01272 }
01273
01274
01275 struct ast_format_list ast_codec_pref_getsize(struct ast_codec_pref *pref, int format)
01276 {
01277 int x, index = -1, framems = 0;
01278 struct ast_format_list fmt = {0};
01279
01280 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) {
01281 if(AST_FORMAT_LIST[x].bits == format) {
01282 fmt = AST_FORMAT_LIST[x];
01283 index = x;
01284 break;
01285 }
01286 }
01287
01288 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) {
01289 if(pref->order[x] == (index + 1)) {
01290 framems = pref->framing[x];
01291 break;
01292 }
01293 }
01294
01295
01296 if(!framems)
01297 framems = AST_FORMAT_LIST[index].def_ms;
01298
01299 if(AST_FORMAT_LIST[index].inc_ms && framems % AST_FORMAT_LIST[index].inc_ms)
01300 framems -= framems % AST_FORMAT_LIST[index].inc_ms;
01301
01302 if(framems < AST_FORMAT_LIST[index].min_ms)
01303 framems = AST_FORMAT_LIST[index].min_ms;
01304
01305 if(framems > AST_FORMAT_LIST[index].max_ms)
01306 framems = AST_FORMAT_LIST[index].max_ms;
01307
01308 fmt.cur_ms = framems;
01309
01310 return fmt;
01311 }
01312
01313
01314 int ast_codec_choose(struct ast_codec_pref *pref, int formats, int find_best)
01315 {
01316 int x, ret = 0, slot;
01317
01318 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) {
01319 slot = pref->order[x];
01320
01321 if (!slot)
01322 break;
01323 if (formats & AST_FORMAT_LIST[slot-1].bits) {
01324 ret = AST_FORMAT_LIST[slot-1].bits;
01325 break;
01326 }
01327 }
01328 if(ret & AST_FORMAT_AUDIO_MASK)
01329 return ret;
01330
01331 if (option_debug > 3)
01332 ast_log(LOG_DEBUG, "Could not find preferred codec - %s\n", find_best ? "Going for the best codec" : "Returning zero codec");
01333
01334 return find_best ? ast_best_codec(formats) : 0;
01335 }
01336
01337 void ast_parse_allow_disallow(struct ast_codec_pref *pref, int *mask, const char *list, int allowing)
01338 {
01339 char *parse = NULL, *this = NULL, *psize = NULL;
01340 int format = 0, framems = 0;
01341
01342 parse = ast_strdupa(list);
01343 while ((this = strsep(&parse, ","))) {
01344 framems = 0;
01345 if ((psize = strrchr(this, ':'))) {
01346 *psize++ = '\0';
01347 if (option_debug)
01348 ast_log(LOG_DEBUG,"Packetization for codec: %s is %s\n", this, psize);
01349 framems = atoi(psize);
01350 if (framems < 0)
01351 framems = 0;
01352 }
01353 if (!(format = ast_getformatbyname(this))) {
01354 ast_log(LOG_WARNING, "Cannot %s unknown format '%s'\n", allowing ? "allow" : "disallow", this);
01355 continue;
01356 }
01357
01358 if (mask) {
01359 if (allowing)
01360 *mask |= format;
01361 else
01362 *mask &= ~format;
01363 }
01364
01365
01366
01367
01368 if (pref && (format & AST_FORMAT_AUDIO_MASK)) {
01369 if (strcasecmp(this, "all")) {
01370 if (allowing) {
01371 ast_codec_pref_append(pref, format);
01372 ast_codec_pref_setsize(pref, format, framems);
01373 }
01374 else
01375 ast_codec_pref_remove(pref, format);
01376 } else if (!allowing) {
01377 memset(pref, 0, sizeof(*pref));
01378 }
01379 }
01380 }
01381 }
01382
01383 static int g723_len(unsigned char buf)
01384 {
01385 enum frame_type type = buf & TYPE_MASK;
01386
01387 switch(type) {
01388 case TYPE_DONTSEND:
01389 return 0;
01390 break;
01391 case TYPE_SILENCE:
01392 return 4;
01393 break;
01394 case TYPE_HIGH:
01395 return 24;
01396 break;
01397 case TYPE_LOW:
01398 return 20;
01399 break;
01400 default:
01401 ast_log(LOG_WARNING, "Badly encoded frame (%d)\n", type);
01402 }
01403 return -1;
01404 }
01405
01406 static int g723_samples(unsigned char *buf, int maxlen)
01407 {
01408 int pos = 0;
01409 int samples = 0;
01410 int res;
01411 while(pos < maxlen) {
01412 res = g723_len(buf[pos]);
01413 if (res <= 0)
01414 break;
01415 samples += 240;
01416 pos += res;
01417 }
01418 return samples;
01419 }
01420
01421 static unsigned char get_n_bits_at(unsigned char *data, int n, int bit)
01422 {
01423 int byte = bit / 8;
01424 int rem = 8 - (bit % 8);
01425 unsigned char ret = 0;
01426
01427 if (n <= 0 || n > 8)
01428 return 0;
01429
01430 if (rem < n) {
01431 ret = (data[byte] << (n - rem));
01432 ret |= (data[byte + 1] >> (8 - n + rem));
01433 } else {
01434 ret = (data[byte] >> (rem - n));
01435 }
01436
01437 return (ret & (0xff >> (8 - n)));
01438 }
01439
01440 static int speex_get_wb_sz_at(unsigned char *data, int len, int bit)
01441 {
01442 static int SpeexWBSubModeSz[] = {
01443 0, 36, 112, 192,
01444 352, 0, 0, 0 };
01445 int off = bit;
01446 unsigned char c;
01447
01448
01449 if (((len * 8 - off) >= 5) &&
01450 get_n_bits_at(data, 1, off)) {
01451 c = get_n_bits_at(data, 3, off + 1);
01452 off += SpeexWBSubModeSz[c];
01453
01454 if (((len * 8 - off) >= 5) &&
01455 get_n_bits_at(data, 1, off)) {
01456 c = get_n_bits_at(data, 3, off + 1);
01457 off += SpeexWBSubModeSz[c];
01458
01459 if (((len * 8 - off) >= 5) &&
01460 get_n_bits_at(data, 1, off)) {
01461 ast_log(LOG_WARNING, "Encountered corrupt speex frame; too many wideband frames in a row.\n");
01462 return -1;
01463 }
01464 }
01465
01466 }
01467 return off - bit;
01468 }
01469
01470 static int speex_samples(unsigned char *data, int len)
01471 {
01472 static int SpeexSubModeSz[] = {
01473 5, 43, 119, 160,
01474 220, 300, 364, 492,
01475 79, 0, 0, 0,
01476 0, 0, 0, 0 };
01477 static int SpeexInBandSz[] = {
01478 1, 1, 4, 4,
01479 4, 4, 4, 4,
01480 8, 8, 16, 16,
01481 32, 32, 64, 64 };
01482 int bit = 0;
01483 int cnt = 0;
01484 int off;
01485 unsigned char c;
01486
01487 while ((len * 8 - bit) >= 5) {
01488
01489 off = speex_get_wb_sz_at(data, len, bit);
01490 if (off < 0) {
01491 ast_log(LOG_WARNING, "Had error while reading wideband frames for speex samples\n");
01492 break;
01493 }
01494 bit += off;
01495
01496 if ((len * 8 - bit) < 5) {
01497 ast_log(LOG_WARNING, "Not enough bits remaining after wide band for speex samples.\n");
01498 break;
01499 }
01500
01501
01502 c = get_n_bits_at(data, 5, bit);
01503 bit += 5;
01504
01505 if (c == 15) {
01506
01507 break;
01508 } else if (c == 14) {
01509
01510 c = get_n_bits_at(data, 4, bit);
01511 bit += 4;
01512 bit += SpeexInBandSz[c];
01513 } else if (c == 13) {
01514
01515 c = get_n_bits_at(data, 5, bit);
01516 bit += 5;
01517 bit += c * 8;
01518 } else if (c > 8) {
01519
01520 break;
01521 } else {
01522
01523 bit += SpeexSubModeSz[c] - 5;
01524 cnt += 160;
01525 }
01526 }
01527 return cnt;
01528 }
01529
01530 int ast_codec_get_samples(struct ast_frame *f)
01531 {
01532 int samples=0;
01533 switch(f->subclass) {
01534 case AST_FORMAT_SPEEX:
01535 samples = speex_samples(f->data, f->datalen);
01536 break;
01537 case AST_FORMAT_G723_1:
01538 samples = g723_samples(f->data, f->datalen);
01539 break;
01540 case AST_FORMAT_ILBC:
01541 samples = 240 * (f->datalen / 50);
01542 break;
01543 case AST_FORMAT_GSM:
01544 samples = 160 * (f->datalen / 33);
01545 break;
01546 case AST_FORMAT_G729A:
01547 samples = f->datalen * 8;
01548 break;
01549 case AST_FORMAT_SLINEAR:
01550 samples = f->datalen / 2;
01551 break;
01552 case AST_FORMAT_LPC10:
01553
01554 samples = 22 * 8;
01555 samples += (((char *)(f->data))[7] & 0x1) * 8;
01556 break;
01557 case AST_FORMAT_ULAW:
01558 case AST_FORMAT_ALAW:
01559 samples = f->datalen;
01560 break;
01561 case AST_FORMAT_G722:
01562 case AST_FORMAT_ADPCM:
01563 case AST_FORMAT_G726:
01564 case AST_FORMAT_G726_AAL2:
01565 samples = f->datalen * 2;
01566 break;
01567 default:
01568 ast_log(LOG_WARNING, "Unable to calculate samples for format %s\n", ast_getformatname(f->subclass));
01569 }
01570 return samples;
01571 }
01572
01573 int ast_codec_get_len(int format, int samples)
01574 {
01575 int len = 0;
01576
01577
01578 switch(format) {
01579 case AST_FORMAT_ILBC:
01580 len = (samples / 240) * 50;
01581 break;
01582 case AST_FORMAT_GSM:
01583 len = (samples / 160) * 33;
01584 break;
01585 case AST_FORMAT_G729A:
01586 len = samples / 8;
01587 break;
01588 case AST_FORMAT_SLINEAR:
01589 len = samples * 2;
01590 break;
01591 case AST_FORMAT_ULAW:
01592 case AST_FORMAT_ALAW:
01593 len = samples;
01594 break;
01595 case AST_FORMAT_G722:
01596 case AST_FORMAT_ADPCM:
01597 case AST_FORMAT_G726:
01598 case AST_FORMAT_G726_AAL2:
01599 len = samples / 2;
01600 break;
01601 default:
01602 ast_log(LOG_WARNING, "Unable to calculate sample length for format %s\n", ast_getformatname(format));
01603 }
01604
01605 return len;
01606 }
01607
01608 int ast_frame_adjust_volume(struct ast_frame *f, int adjustment)
01609 {
01610 int count;
01611 short *fdata = f->data;
01612 short adjust_value = abs(adjustment);
01613
01614 if ((f->frametype != AST_FRAME_VOICE) || (f->subclass != AST_FORMAT_SLINEAR))
01615 return -1;
01616
01617 if (!adjustment)
01618 return 0;
01619
01620 for (count = 0; count < f->samples; count++) {
01621 if (adjustment > 0) {
01622 ast_slinear_saturated_multiply(&fdata[count], &adjust_value);
01623 } else if (adjustment < 0) {
01624 ast_slinear_saturated_divide(&fdata[count], &adjust_value);
01625 }
01626 }
01627
01628 return 0;
01629 }
01630
01631 int ast_frame_slinear_sum(struct ast_frame *f1, struct ast_frame *f2)
01632 {
01633 int count;
01634 short *data1, *data2;
01635
01636 if ((f1->frametype != AST_FRAME_VOICE) || (f1->subclass != AST_FORMAT_SLINEAR))
01637 return -1;
01638
01639 if ((f2->frametype != AST_FRAME_VOICE) || (f2->subclass != AST_FORMAT_SLINEAR))
01640 return -1;
01641
01642 if (f1->samples != f2->samples)
01643 return -1;
01644
01645 for (count = 0, data1 = f1->data, data2 = f2->data;
01646 count < f1->samples;
01647 count++, data1++, data2++)
01648 ast_slinear_saturated_add(data1, data2);
01649
01650 return 0;
01651 }