#include "asterisk.h"
#include "asterisk/_private.h"
#include "asterisk/lock.h"
#include "asterisk/frame.h"
#include "asterisk/channel.h"
#include "asterisk/cli.h"
#include "asterisk/term.h"
#include "asterisk/utils.h"
#include "asterisk/threadstorage.h"
#include "asterisk/linkedlists.h"
#include "asterisk/translate.h"
#include "asterisk/dsp.h"
#include "asterisk/file.h"
Go to the source code of this file.
Data Structures | |
struct | ast_codec_alias_table |
struct | ast_frame_cache |
struct | ast_frames |
This is just so ast_frames, a list head struct for holding a list of ast_frame structures, is defined. More... | |
struct | ast_smoother |
Defines | |
#define | FRAME_CACHE_MAX_SIZE 10 |
Maximum ast_frame cache size. | |
#define | SMOOTHER_SIZE 8000 |
#define | TYPE_MASK 0x3 |
Enumerations | |
enum | frame_type { TYPE_HIGH, TYPE_LOW, TYPE_SILENCE, TYPE_DONTSEND } |
Functions | |
int | __ast_smoother_feed (struct ast_smoother *s, struct ast_frame *f, int swap) |
static void | __frame_free (struct ast_frame *fr, int cache) |
static void | __init_frame_cache (void) |
A per-thread cache of frame headers. | |
char * | ast_codec2str (format_t codec) |
Get a name from a format Gets a name from a format. | |
format_t | ast_codec_choose (struct ast_codec_pref *pref, format_t formats, int find_best) |
Select the best audio format according to preference list from supplied options. If "find_best" is non-zero then if nothing is found, the "Best" format of the format list is selected, otherwise 0 is returned. | |
int | ast_codec_get_len (format_t format, int samples) |
Returns the number of bytes for the number of samples of the given format. | |
int | ast_codec_get_samples (struct ast_frame *f) |
Returns the number of samples contained in the frame. | |
int | ast_codec_pref_append (struct ast_codec_pref *pref, format_t format) |
Append a audio codec to a preference list, removing it first if it was already there. | |
void | ast_codec_pref_convert (struct ast_codec_pref *pref, char *buf, size_t size, int right) |
Shift an audio codec preference list up or down 65 bytes so that it becomes an ASCII string. | |
ast_format_list | ast_codec_pref_getsize (struct ast_codec_pref *pref, format_t format) |
Get packet size for codec. | |
format_t | ast_codec_pref_index (struct ast_codec_pref *pref, int idx) |
Codec located at a particular place in the preference index. | |
void | ast_codec_pref_prepend (struct ast_codec_pref *pref, format_t format, int only_if_existing) |
Prepend an audio codec to a preference list, removing it first if it was already there. | |
void | ast_codec_pref_remove (struct ast_codec_pref *pref, format_t format) |
Remove audio a codec from a preference list. | |
int | ast_codec_pref_setsize (struct ast_codec_pref *pref, format_t format, int framems) |
Set packet size for codec. | |
int | ast_codec_pref_string (struct ast_codec_pref *pref, char *buf, size_t size) |
Dump audio codec preference list into a string. | |
static const char * | ast_expand_codec_alias (const char *in) |
int | ast_frame_adjust_volume (struct ast_frame *f, int adjustment) |
Adjusts the volume of the audio samples contained in a frame. | |
int | ast_frame_clear (struct ast_frame *frame) |
Clear all audio samples from an ast_frame. The frame must be AST_FRAME_VOICE and AST_FORMAT_SLINEAR. | |
void | ast_frame_dump (const char *name, struct ast_frame *f, char *prefix) |
void | ast_frame_free (struct ast_frame *frame, int cache) |
Requests a frame to be allocated Frees a frame or list of frames. | |
static struct ast_frame * | ast_frame_header_new (void) |
int | ast_frame_slinear_sum (struct ast_frame *f1, struct ast_frame *f2) |
Sums two frames of audio samples. | |
ast_frame * | ast_frdup (const struct ast_frame *f) |
Copies a frame. | |
ast_frame * | ast_frisolate (struct ast_frame *fr) |
Makes a frame independent of any static storage. | |
ast_format_list * | ast_get_format_list (size_t *size) |
ast_format_list * | ast_get_format_list_index (int idx) |
format_t | ast_getformatbyname (const char *name) |
Gets a format from a name. | |
char * | ast_getformatname (format_t format) |
Get the name of a format. | |
char * | ast_getformatname_multiple (char *buf, size_t size, format_t format) |
Get the names of a set of formats. | |
int | ast_parse_allow_disallow (struct ast_codec_pref *pref, format_t *mask, const char *list, int allowing) |
Parse an "allow" or "deny" line in a channel or device configuration and update the capabilities mask and pref if provided. Video codecs are not added to codec preference lists, since we can not transcode. | |
void | ast_smoother_free (struct ast_smoother *s) |
int | ast_smoother_get_flags (struct ast_smoother *s) |
ast_smoother * | ast_smoother_new (int size) |
ast_frame * | ast_smoother_read (struct ast_smoother *s) |
void | ast_smoother_reconfigure (struct ast_smoother *s, int bytes) |
Reconfigure an existing smoother to output a different number of bytes per frame. | |
void | ast_smoother_reset (struct ast_smoother *s, int bytes) |
void | ast_smoother_set_flags (struct ast_smoother *s, int flags) |
int | ast_smoother_test_flag (struct ast_smoother *s, int flag) |
void | ast_swapcopy_samples (void *dst, const void *src, int samples) |
static void | frame_cache_cleanup (void *data) |
static int | g723_len (unsigned char buf) |
static int | g723_samples (unsigned char *buf, int maxlen) |
static unsigned char | get_n_bits_at (unsigned char *data, int n, int bit) |
int | init_framer (void) |
static char * | show_codec_n (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a) |
static char * | show_codecs (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a) |
static int | smoother_frame_feed (struct ast_smoother *s, struct ast_frame *f, int swap) |
static int | speex_get_wb_sz_at (unsigned char *data, int len, int bit) |
static int | speex_samples (unsigned char *data, int len) |
Variables | |
static struct ast_format_list | AST_FORMAT_LIST [] |
Definition of supported media formats (codecs). | |
ast_frame | ast_null_frame = { AST_FRAME_NULL, } |
static struct ast_threadstorage | frame_cache = { .once = PTHREAD_ONCE_INIT , .key_init = __init_frame_cache , .custom_init = NULL , } |
static struct ast_cli_entry | my_clis [] |
Definition in file frame.c.
#define FRAME_CACHE_MAX_SIZE 10 |
Maximum ast_frame cache size.
In most cases where the frame header cache will be useful, the size of the cache will stay very small. However, it is not always the case that the same thread that allocates the frame will be the one freeing them, so sometimes a thread will never have any frames in its cache, or the cache will never be pulled from. For the latter case, we limit the maximum size.
#define SMOOTHER_SIZE 8000 |
enum frame_type |
Definition at line 72 of file frame.c.
00072 { 00073 TYPE_HIGH, /* 0x0 */ 00074 TYPE_LOW, /* 0x1 */ 00075 TYPE_SILENCE, /* 0x2 */ 00076 TYPE_DONTSEND /* 0x3 */ 00077 };
int __ast_smoother_feed | ( | struct ast_smoother * | s, | |
struct ast_frame * | f, | |||
int | swap | |||
) |
Definition at line 204 of file frame.c.
References AST_FRAME_VOICE, ast_getformatname(), ast_log(), AST_MIN_OFFSET, AST_SMOOTHER_FLAG_G729, ast_swapcopy_samples(), f, ast_smoother::flags, ast_smoother::format, ast_smoother::len, LOG_WARNING, ast_smoother::opt, ast_smoother::opt_needs_swap, ast_smoother::samplesperbyte, ast_smoother::size, smoother_frame_feed(), and SMOOTHER_SIZE.
00205 { 00206 if (f->frametype != AST_FRAME_VOICE) { 00207 ast_log(LOG_WARNING, "Huh? Can't smooth a non-voice frame!\n"); 00208 return -1; 00209 } 00210 if (!s->format) { 00211 s->format = f->subclass.codec; 00212 s->samplesperbyte = (float)f->samples / (float)f->datalen; 00213 } else if (s->format != f->subclass.codec) { 00214 ast_log(LOG_WARNING, "Smoother was working on %s format frames, now trying to feed %s?\n", 00215 ast_getformatname(s->format), ast_getformatname(f->subclass.codec)); 00216 return -1; 00217 } 00218 if (s->len + f->datalen > SMOOTHER_SIZE) { 00219 ast_log(LOG_WARNING, "Out of smoother space\n"); 00220 return -1; 00221 } 00222 if (((f->datalen == s->size) || 00223 ((f->datalen < 10) && (s->flags & AST_SMOOTHER_FLAG_G729))) && 00224 !s->opt && 00225 !s->len && 00226 (f->offset >= AST_MIN_OFFSET)) { 00227 /* Optimize by sending the frame we just got 00228 on the next read, thus eliminating the douple 00229 copy */ 00230 if (swap) 00231 ast_swapcopy_samples(f->data.ptr, f->data.ptr, f->samples); 00232 s->opt = f; 00233 s->opt_needs_swap = swap ? 1 : 0; 00234 return 0; 00235 } 00236 00237 return smoother_frame_feed(s, f, swap); 00238 }
static void __frame_free | ( | struct ast_frame * | fr, | |
int | cache | |||
) | [static] |
Definition at line 337 of file frame.c.
References ast_free, AST_LIST_INSERT_HEAD, AST_MALLOCD_DATA, AST_MALLOCD_HDR, AST_MALLOCD_SRC, ast_threadstorage_get(), ast_frame::data, frame_cache, FRAME_CACHE_MAX_SIZE, frames, ast_frame::mallocd, ast_frame::offset, ast_frame::ptr, and ast_frame::src.
Referenced by ast_frame_free().
00338 { 00339 if (!fr->mallocd) 00340 return; 00341 00342 #if !defined(LOW_MEMORY) 00343 if (cache && fr->mallocd == AST_MALLOCD_HDR) { 00344 /* Cool, only the header is malloc'd, let's just cache those for now 00345 * to keep things simple... */ 00346 struct ast_frame_cache *frames; 00347 00348 if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames))) && 00349 (frames->size < FRAME_CACHE_MAX_SIZE)) { 00350 AST_LIST_INSERT_HEAD(&frames->list, fr, frame_list); 00351 frames->size++; 00352 return; 00353 } 00354 } 00355 #endif 00356 00357 if (fr->mallocd & AST_MALLOCD_DATA) { 00358 if (fr->data.ptr) 00359 ast_free(fr->data.ptr - fr->offset); 00360 } 00361 if (fr->mallocd & AST_MALLOCD_SRC) { 00362 if (fr->src) 00363 ast_free((void *) fr->src); 00364 } 00365 if (fr->mallocd & AST_MALLOCD_HDR) { 00366 ast_free(fr); 00367 } 00368 }
static void __init_frame_cache | ( | void | ) | [static] |
char* ast_codec2str | ( | format_t | codec | ) |
Get a name from a format Gets a name from a format.
codec | codec number (1,2,4,8,16,etc.) |
Definition at line 651 of file frame.c.
References ARRAY_LEN, AST_FORMAT_LIST, and ast_format_list::desc.
Referenced by moh_alloc(), and show_codec_n().
00652 { 00653 int x; 00654 char *ret = "unknown"; 00655 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 00656 if (AST_FORMAT_LIST[x].bits == codec) { 00657 ret = AST_FORMAT_LIST[x].desc; 00658 break; 00659 } 00660 } 00661 return ret; 00662 }
format_t ast_codec_choose | ( | struct ast_codec_pref * | pref, | |
format_t | formats, | |||
int | find_best | |||
) |
Select the best audio format according to preference list from supplied options. If "find_best" is non-zero then if nothing is found, the "Best" format of the format list is selected, otherwise 0 is returned.
Definition at line 1224 of file frame.c.
References ARRAY_LEN, ast_best_codec(), ast_debug, AST_FORMAT_LIST, ast_format_list::bits, and ast_codec_pref::order.
Referenced by __oh323_new(), gtalk_new(), jingle_new(), process_sdp(), sip_new(), and socket_process().
01225 { 01226 int x, slot; 01227 format_t ret = 0; 01228 01229 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01230 slot = pref->order[x]; 01231 01232 if (!slot) 01233 break; 01234 if (formats & AST_FORMAT_LIST[slot-1].bits) { 01235 ret = AST_FORMAT_LIST[slot-1].bits; 01236 break; 01237 } 01238 } 01239 if (ret & AST_FORMAT_AUDIO_MASK) 01240 return ret; 01241 01242 ast_debug(4, "Could not find preferred codec - %s\n", find_best ? "Going for the best codec" : "Returning zero codec"); 01243 01244 return find_best ? ast_best_codec(formats) : 0; 01245 }
int ast_codec_get_len | ( | format_t | format, | |
int | samples | |||
) |
Returns the number of bytes for the number of samples of the given format.
Definition at line 1507 of file frame.c.
References AST_FORMAT_ADPCM, AST_FORMAT_ALAW, AST_FORMAT_G719, AST_FORMAT_G722, AST_FORMAT_G723_1, AST_FORMAT_G726, AST_FORMAT_G726_AAL2, AST_FORMAT_G729A, AST_FORMAT_GSM, AST_FORMAT_ILBC, AST_FORMAT_SIREN14, AST_FORMAT_SIREN7, AST_FORMAT_SLINEAR, AST_FORMAT_SLINEAR16, AST_FORMAT_TESTLAW, AST_FORMAT_ULAW, ast_getformatname(), ast_log(), len(), and LOG_WARNING.
Referenced by moh_generate(), and monmp3thread().
01508 { 01509 int len = 0; 01510 01511 /* XXX Still need speex, and lpc10 XXX */ 01512 switch(format) { 01513 case AST_FORMAT_G723_1: 01514 len = (samples / 240) * 20; 01515 break; 01516 case AST_FORMAT_ILBC: 01517 len = (samples / 240) * 50; 01518 break; 01519 case AST_FORMAT_GSM: 01520 len = (samples / 160) * 33; 01521 break; 01522 case AST_FORMAT_G729A: 01523 len = samples / 8; 01524 break; 01525 case AST_FORMAT_SLINEAR: 01526 case AST_FORMAT_SLINEAR16: 01527 len = samples * 2; 01528 break; 01529 case AST_FORMAT_ULAW: 01530 case AST_FORMAT_ALAW: 01531 case AST_FORMAT_TESTLAW: 01532 len = samples; 01533 break; 01534 case AST_FORMAT_G722: 01535 case AST_FORMAT_ADPCM: 01536 case AST_FORMAT_G726: 01537 case AST_FORMAT_G726_AAL2: 01538 len = samples / 2; 01539 break; 01540 case AST_FORMAT_SIREN7: 01541 /* 16,000 samples per second at 32kbps is 4,000 bytes per second */ 01542 len = samples / (16000 / 4000); 01543 break; 01544 case AST_FORMAT_SIREN14: 01545 /* 32,000 samples per second at 48kbps is 6,000 bytes per second */ 01546 len = (int) samples / ((float) 32000 / 6000); 01547 break; 01548 case AST_FORMAT_G719: 01549 /* 48,000 samples per second at 64kbps is 8,000 bytes per second */ 01550 len = (int) samples / ((float) 48000 / 8000); 01551 break; 01552 default: 01553 ast_log(LOG_WARNING, "Unable to calculate sample length for format %s\n", ast_getformatname(format)); 01554 } 01555 01556 return len; 01557 }
int ast_codec_get_samples | ( | struct ast_frame * | f | ) |
Returns the number of samples contained in the frame.
Definition at line 1445 of file frame.c.
References AST_FORMAT_ADPCM, AST_FORMAT_ALAW, AST_FORMAT_G719, AST_FORMAT_G722, AST_FORMAT_G723_1, AST_FORMAT_G726, AST_FORMAT_G726_AAL2, AST_FORMAT_G729A, AST_FORMAT_GSM, AST_FORMAT_ILBC, AST_FORMAT_LPC10, AST_FORMAT_SIREN14, AST_FORMAT_SIREN7, AST_FORMAT_SLINEAR, AST_FORMAT_SLINEAR16, AST_FORMAT_SPEEX, AST_FORMAT_SPEEX16, AST_FORMAT_TESTLAW, AST_FORMAT_ULAW, ast_getformatname_multiple(), ast_log(), f, g723_samples(), LOG_WARNING, and speex_samples().
Referenced by ast_rtp_read(), isAnsweringMachine(), moh_generate(), schedule_delivery(), socket_process(), and socket_process_meta().
01446 { 01447 int samples = 0; 01448 char tmp[64]; 01449 01450 switch (f->subclass.codec) { 01451 case AST_FORMAT_SPEEX: 01452 samples = speex_samples(f->data.ptr, f->datalen); 01453 break; 01454 case AST_FORMAT_SPEEX16: 01455 samples = 2 * speex_samples(f->data.ptr, f->datalen); 01456 break; 01457 case AST_FORMAT_G723_1: 01458 samples = g723_samples(f->data.ptr, f->datalen); 01459 break; 01460 case AST_FORMAT_ILBC: 01461 samples = 240 * (f->datalen / 50); 01462 break; 01463 case AST_FORMAT_GSM: 01464 samples = 160 * (f->datalen / 33); 01465 break; 01466 case AST_FORMAT_G729A: 01467 samples = f->datalen * 8; 01468 break; 01469 case AST_FORMAT_SLINEAR: 01470 case AST_FORMAT_SLINEAR16: 01471 samples = f->datalen / 2; 01472 break; 01473 case AST_FORMAT_LPC10: 01474 /* assumes that the RTP packet contains one LPC10 frame */ 01475 samples = 22 * 8; 01476 samples += (((char *)(f->data.ptr))[7] & 0x1) * 8; 01477 break; 01478 case AST_FORMAT_ULAW: 01479 case AST_FORMAT_ALAW: 01480 case AST_FORMAT_TESTLAW: 01481 samples = f->datalen; 01482 break; 01483 case AST_FORMAT_G722: 01484 case AST_FORMAT_ADPCM: 01485 case AST_FORMAT_G726: 01486 case AST_FORMAT_G726_AAL2: 01487 samples = f->datalen * 2; 01488 break; 01489 case AST_FORMAT_SIREN7: 01490 /* 16,000 samples per second at 32kbps is 4,000 bytes per second */ 01491 samples = f->datalen * (16000 / 4000); 01492 break; 01493 case AST_FORMAT_SIREN14: 01494 /* 32,000 samples per second at 48kbps is 6,000 bytes per second */ 01495 samples = (int) f->datalen * ((float) 32000 / 6000); 01496 break; 01497 case AST_FORMAT_G719: 01498 /* 48,000 samples per second at 64kbps is 8,000 bytes per second */ 01499 samples = (int) f->datalen * ((float) 48000 / 8000); 01500 break; 01501 default: 01502 ast_log(LOG_WARNING, "Unable to calculate samples for format %s\n", ast_getformatname_multiple(tmp, sizeof(tmp), f->subclass.codec)); 01503 } 01504 return samples; 01505 }
int ast_codec_pref_append | ( | struct ast_codec_pref * | pref, | |
format_t | format | |||
) |
Append a audio codec to a preference list, removing it first if it was already there.
Definition at line 1084 of file frame.c.
References ARRAY_LEN, ast_codec_pref_remove(), AST_FORMAT_LIST, and ast_codec_pref::order.
Referenced by ast_parse_allow_disallow().
01085 { 01086 int x, newindex = 0; 01087 01088 ast_codec_pref_remove(pref, format); 01089 01090 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01091 if (AST_FORMAT_LIST[x].bits == format) { 01092 newindex = x + 1; 01093 break; 01094 } 01095 } 01096 01097 if (newindex) { 01098 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01099 if (!pref->order[x]) { 01100 pref->order[x] = newindex; 01101 break; 01102 } 01103 } 01104 } 01105 01106 return x; 01107 }
void ast_codec_pref_convert | ( | struct ast_codec_pref * | pref, | |
char * | buf, | |||
size_t | size, | |||
int | right | |||
) |
Shift an audio codec preference list up or down 65 bytes so that it becomes an ASCII string.
pref | A codec preference list structure | |
buf | A string denoting codec preference, appropriate for use in line transmission | |
size | Size of buf | |
right | Boolean: if 0, convert from buf to pref; if 1, convert from pref to buf. |
Definition at line 987 of file frame.c.
References ast_codec_pref::order.
Referenced by check_access(), create_addr(), dump_prefs(), and socket_process().
00988 { 00989 int x, differential = (int) 'A', mem; 00990 char *from, *to; 00991 00992 if (right) { 00993 from = pref->order; 00994 to = buf; 00995 mem = size; 00996 } else { 00997 to = pref->order; 00998 from = buf; 00999 mem = sizeof(format_t) * 8; 01000 } 01001 01002 memset(to, 0, mem); 01003 for (x = 0; x < sizeof(format_t) * 8; x++) { 01004 if (!from[x]) 01005 break; 01006 to[x] = right ? (from[x] + differential) : (from[x] - differential); 01007 } 01008 }
struct ast_format_list ast_codec_pref_getsize | ( | struct ast_codec_pref * | pref, | |
format_t | format | |||
) |
Get packet size for codec.
Definition at line 1185 of file frame.c.
References ARRAY_LEN, AST_FORMAT_LIST, ast_format_list::bits, ast_format_list::cur_ms, ast_format_list::def_ms, format, ast_format_list::inc_ms, ast_format_list::max_ms, and ast_format_list::min_ms.
Referenced by add_codec_to_sdp(), ast_rtp_write(), handle_open_receive_channel_ack_message(), skinny_set_rtp_peer(), and transmit_connect().
01186 { 01187 int x, idx = -1, framems = 0; 01188 struct ast_format_list fmt = { 0, }; 01189 01190 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01191 if (AST_FORMAT_LIST[x].bits == format) { 01192 fmt = AST_FORMAT_LIST[x]; 01193 idx = x; 01194 break; 01195 } 01196 } 01197 01198 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01199 if (pref->order[x] == (idx + 1)) { 01200 framems = pref->framing[x]; 01201 break; 01202 } 01203 } 01204 01205 /* size validation */ 01206 if (!framems) 01207 framems = AST_FORMAT_LIST[idx].def_ms; 01208 01209 if (AST_FORMAT_LIST[idx].inc_ms && framems % AST_FORMAT_LIST[idx].inc_ms) /* avoid division by zero */ 01210 framems -= framems % AST_FORMAT_LIST[idx].inc_ms; 01211 01212 if (framems < AST_FORMAT_LIST[idx].min_ms) 01213 framems = AST_FORMAT_LIST[idx].min_ms; 01214 01215 if (framems > AST_FORMAT_LIST[idx].max_ms) 01216 framems = AST_FORMAT_LIST[idx].max_ms; 01217 01218 fmt.cur_ms = framems; 01219 01220 return fmt; 01221 }
format_t ast_codec_pref_index | ( | struct ast_codec_pref * | pref, | |
int | index | |||
) |
Codec located at a particular place in the preference index.
Definition at line 1046 of file frame.c.
References AST_FORMAT_LIST, ast_format_list::bits, and ast_codec_pref::order.
Referenced by _sip_show_peer(), _skinny_show_line(), add_sdp(), ast_codec_pref_string(), function_iaxpeer(), function_sippeer(), gtalk_invite(), handle_cli_iax2_show_peer(), jingle_accept_call(), print_codec_to_cli(), and socket_process().
01047 { 01048 int slot = 0; 01049 01050 if ((idx >= 0) && (idx < sizeof(pref->order))) { 01051 slot = pref->order[idx]; 01052 } 01053 01054 return slot ? AST_FORMAT_LIST[slot - 1].bits : 0; 01055 }
void ast_codec_pref_prepend | ( | struct ast_codec_pref * | pref, | |
format_t | format, | |||
int | only_if_existing | |||
) |
Prepend an audio codec to a preference list, removing it first if it was already there.
Definition at line 1110 of file frame.c.
References ARRAY_LEN, AST_FORMAT_LIST, ast_codec_pref::framing, and ast_codec_pref::order.
Referenced by create_addr().
01111 { 01112 int x, newindex = 0; 01113 01114 /* First step is to get the codecs "index number" */ 01115 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01116 if (AST_FORMAT_LIST[x].bits == format) { 01117 newindex = x + 1; 01118 break; 01119 } 01120 } 01121 /* Done if its unknown */ 01122 if (!newindex) 01123 return; 01124 01125 /* Now find any existing occurrence, or the end */ 01126 for (x = 0; x < sizeof(format_t) * 8; x++) { 01127 if (!pref->order[x] || pref->order[x] == newindex) 01128 break; 01129 } 01130 01131 if (only_if_existing && !pref->order[x]) 01132 return; 01133 01134 /* Move down to make space to insert - either all the way to the end, 01135 or as far as the existing location (which will be overwritten) */ 01136 for (; x > 0; x--) { 01137 pref->order[x] = pref->order[x - 1]; 01138 pref->framing[x] = pref->framing[x - 1]; 01139 } 01140 01141 /* And insert the new entry */ 01142 pref->order[0] = newindex; 01143 pref->framing[0] = 0; /* ? */ 01144 }
void ast_codec_pref_remove | ( | struct ast_codec_pref * | pref, | |
format_t | format | |||
) |
Remove audio a codec from a preference list.
Definition at line 1058 of file frame.c.
References ARRAY_LEN, AST_FORMAT_LIST, and ast_codec_pref::order.
Referenced by ast_codec_pref_append(), and ast_parse_allow_disallow().
01059 { 01060 struct ast_codec_pref oldorder; 01061 int x, y = 0; 01062 int slot; 01063 int size; 01064 01065 if (!pref->order[0]) 01066 return; 01067 01068 memcpy(&oldorder, pref, sizeof(oldorder)); 01069 memset(pref, 0, sizeof(*pref)); 01070 01071 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01072 slot = oldorder.order[x]; 01073 size = oldorder.framing[x]; 01074 if (! slot) 01075 break; 01076 if (AST_FORMAT_LIST[slot-1].bits != format) { 01077 pref->order[y] = slot; 01078 pref->framing[y++] = size; 01079 } 01080 } 01081 }
int ast_codec_pref_setsize | ( | struct ast_codec_pref * | pref, | |
format_t | format, | |||
int | framems | |||
) |
Set packet size for codec.
Definition at line 1147 of file frame.c.
References ARRAY_LEN, AST_FORMAT_LIST, ast_format_list::def_ms, ast_codec_pref::framing, ast_format_list::inc_ms, ast_format_list::max_ms, ast_format_list::min_ms, and ast_codec_pref::order.
Referenced by ast_parse_allow_disallow(), and process_sdp_a_audio().
01148 { 01149 int x, idx = -1; 01150 01151 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01152 if (AST_FORMAT_LIST[x].bits == format) { 01153 idx = x; 01154 break; 01155 } 01156 } 01157 01158 if (idx < 0) 01159 return -1; 01160 01161 /* size validation */ 01162 if (!framems) 01163 framems = AST_FORMAT_LIST[idx].def_ms; 01164 01165 if (AST_FORMAT_LIST[idx].inc_ms && framems % AST_FORMAT_LIST[idx].inc_ms) /* avoid division by zero */ 01166 framems -= framems % AST_FORMAT_LIST[idx].inc_ms; 01167 01168 if (framems < AST_FORMAT_LIST[idx].min_ms) 01169 framems = AST_FORMAT_LIST[idx].min_ms; 01170 01171 if (framems > AST_FORMAT_LIST[idx].max_ms) 01172 framems = AST_FORMAT_LIST[idx].max_ms; 01173 01174 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01175 if (pref->order[x] == (idx + 1)) { 01176 pref->framing[x] = framems; 01177 break; 01178 } 01179 } 01180 01181 return x; 01182 }
int ast_codec_pref_string | ( | struct ast_codec_pref * | pref, | |
char * | buf, | |||
size_t | size | |||
) |
Dump audio codec preference list into a string.
Definition at line 1010 of file frame.c.
References ast_codec_pref_index(), and ast_getformatname().
Referenced by dump_prefs(), and socket_process().
01011 { 01012 int x; 01013 format_t codec; 01014 size_t total_len, slen; 01015 char *formatname; 01016 01017 memset(buf, 0, size); 01018 total_len = size; 01019 buf[0] = '('; 01020 total_len--; 01021 for (x = 0; x < sizeof(format_t) * 8; x++) { 01022 if (total_len <= 0) 01023 break; 01024 if (!(codec = ast_codec_pref_index(pref,x))) 01025 break; 01026 if ((formatname = ast_getformatname(codec))) { 01027 slen = strlen(formatname); 01028 if (slen > total_len) 01029 break; 01030 strncat(buf, formatname, total_len - 1); /* safe */ 01031 total_len -= slen; 01032 } 01033 if (total_len && x < sizeof(format_t) * 8 - 1 && ast_codec_pref_index(pref, x + 1)) { 01034 strncat(buf, "|", total_len - 1); /* safe */ 01035 total_len--; 01036 } 01037 } 01038 if (total_len) { 01039 strncat(buf, ")", total_len - 1); /* safe */ 01040 total_len--; 01041 } 01042 01043 return size - total_len; 01044 }
static const char* ast_expand_codec_alias | ( | const char * | in | ) | [static] |
Definition at line 621 of file frame.c.
References ARRAY_LEN.
Referenced by ast_getformatbyname().
00622 { 00623 int x; 00624 00625 for (x = 0; x < ARRAY_LEN(ast_codec_alias_table); x++) { 00626 if (!strcmp(in,ast_codec_alias_table[x].alias)) 00627 return ast_codec_alias_table[x].realname; 00628 } 00629 return in; 00630 }
int ast_frame_adjust_volume | ( | struct ast_frame * | f, | |
int | adjustment | |||
) |
Adjusts the volume of the audio samples contained in a frame.
f | The frame containing the samples (must be AST_FRAME_VOICE and AST_FORMAT_SLINEAR) | |
adjustment | The number of dB to adjust up or down. |
Definition at line 1559 of file frame.c.
References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_slinear_saturated_divide(), ast_slinear_saturated_multiply(), and f.
Referenced by audiohook_read_frame_single(), audiohook_volume_callback(), conf_run(), and volume_callback().
01560 { 01561 int count; 01562 short *fdata = f->data.ptr; 01563 short adjust_value = abs(adjustment); 01564 01565 if ((f->frametype != AST_FRAME_VOICE) || (f->subclass.codec != AST_FORMAT_SLINEAR)) 01566 return -1; 01567 01568 if (!adjustment) 01569 return 0; 01570 01571 for (count = 0; count < f->samples; count++) { 01572 if (adjustment > 0) { 01573 ast_slinear_saturated_multiply(&fdata[count], &adjust_value); 01574 } else if (adjustment < 0) { 01575 ast_slinear_saturated_divide(&fdata[count], &adjust_value); 01576 } 01577 } 01578 01579 return 0; 01580 }
int ast_frame_clear | ( | struct ast_frame * | frame | ) |
Clear all audio samples from an ast_frame. The frame must be AST_FRAME_VOICE and AST_FORMAT_SLINEAR.
Definition at line 1604 of file frame.c.
References AST_LIST_NEXT, ast_frame::data, ast_frame::datalen, ast_frame::next, and ast_frame::ptr.
Referenced by ast_audiohook_write_frame(), and mute_callback().
01605 { 01606 struct ast_frame *next; 01607 01608 for (next = AST_LIST_NEXT(frame, frame_list); 01609 frame; 01610 frame = next, next = frame ? AST_LIST_NEXT(frame, frame_list) : NULL) { 01611 memset(frame->data.ptr, 0, frame->datalen); 01612 } 01613 return 0; 01614 }
void ast_frame_dump | ( | const char * | name, | |
struct ast_frame * | f, | |||
char * | prefix | |||
) |
Dump a frame for debugging purposes
Definition at line 769 of file frame.c.
References AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_FLASH, AST_CONTROL_HANGUP, AST_CONTROL_HOLD, AST_CONTROL_OFFHOOK, AST_CONTROL_OPTION, AST_CONTROL_RADIO_KEY, AST_CONTROL_RADIO_UNKEY, AST_CONTROL_RING, AST_CONTROL_RINGING, AST_CONTROL_T38_PARAMETERS, AST_CONTROL_TAKEOFFHOOK, AST_CONTROL_UNHOLD, AST_CONTROL_WINK, ast_copy_string(), AST_FRAME_CONTROL, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, AST_FRAME_HTML, AST_FRAME_IAX, AST_FRAME_IMAGE, AST_FRAME_MODEM, AST_FRAME_NULL, AST_FRAME_TEXT, AST_FRAME_VIDEO, AST_FRAME_VOICE, ast_getformatname(), AST_HTML_BEGIN, AST_HTML_DATA, AST_HTML_END, AST_HTML_LDCOMPLETE, AST_HTML_LINKREJECT, AST_HTML_LINKURL, AST_HTML_NOSUPPORT, AST_HTML_UNLINK, AST_HTML_URL, AST_MODEM_T38, AST_MODEM_V150, ast_strlen_zero(), AST_T38_NEGOTIATED, AST_T38_REFUSED, AST_T38_REQUEST_NEGOTIATE, AST_T38_REQUEST_TERMINATE, AST_T38_TERMINATED, ast_verbose, COLOR_BLACK, COLOR_BRCYAN, COLOR_BRGREEN, COLOR_BRMAGENTA, COLOR_BRRED, COLOR_YELLOW, f, ast_control_t38_parameters::request_response, and term_color().
Referenced by __ast_read(), and ast_write().
00770 { 00771 const char noname[] = "unknown"; 00772 char ftype[40] = "Unknown Frametype"; 00773 char cft[80]; 00774 char subclass[40] = "Unknown Subclass"; 00775 char csub[80]; 00776 char moreinfo[40] = ""; 00777 char cn[60]; 00778 char cp[40]; 00779 char cmn[40]; 00780 const char *message = "Unknown"; 00781 00782 if (!name) 00783 name = noname; 00784 00785 00786 if (!f) { 00787 ast_verbose("%s [ %s (NULL) ] [%s]\n", 00788 term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)), 00789 term_color(cft, "HANGUP", COLOR_BRRED, COLOR_BLACK, sizeof(cft)), 00790 term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); 00791 return; 00792 } 00793 /* XXX We should probably print one each of voice and video when the format changes XXX */ 00794 if (f->frametype == AST_FRAME_VOICE) 00795 return; 00796 if (f->frametype == AST_FRAME_VIDEO) 00797 return; 00798 switch(f->frametype) { 00799 case AST_FRAME_DTMF_BEGIN: 00800 strcpy(ftype, "DTMF Begin"); 00801 subclass[0] = f->subclass.integer; 00802 subclass[1] = '\0'; 00803 break; 00804 case AST_FRAME_DTMF_END: 00805 strcpy(ftype, "DTMF End"); 00806 subclass[0] = f->subclass.integer; 00807 subclass[1] = '\0'; 00808 break; 00809 case AST_FRAME_CONTROL: 00810 strcpy(ftype, "Control"); 00811 switch (f->subclass.integer) { 00812 case AST_CONTROL_HANGUP: 00813 strcpy(subclass, "Hangup"); 00814 break; 00815 case AST_CONTROL_RING: 00816 strcpy(subclass, "Ring"); 00817 break; 00818 case AST_CONTROL_RINGING: 00819 strcpy(subclass, "Ringing"); 00820 break; 00821 case AST_CONTROL_ANSWER: 00822 strcpy(subclass, "Answer"); 00823 break; 00824 case AST_CONTROL_BUSY: 00825 strcpy(subclass, "Busy"); 00826 break; 00827 case AST_CONTROL_TAKEOFFHOOK: 00828 strcpy(subclass, "Take Off Hook"); 00829 break; 00830 case AST_CONTROL_OFFHOOK: 00831 strcpy(subclass, "Line Off Hook"); 00832 break; 00833 case AST_CONTROL_CONGESTION: 00834 strcpy(subclass, "Congestion"); 00835 break; 00836 case AST_CONTROL_FLASH: 00837 strcpy(subclass, "Flash"); 00838 break; 00839 case AST_CONTROL_WINK: 00840 strcpy(subclass, "Wink"); 00841 break; 00842 case AST_CONTROL_OPTION: 00843 strcpy(subclass, "Option"); 00844 break; 00845 case AST_CONTROL_RADIO_KEY: 00846 strcpy(subclass, "Key Radio"); 00847 break; 00848 case AST_CONTROL_RADIO_UNKEY: 00849 strcpy(subclass, "Unkey Radio"); 00850 break; 00851 case AST_CONTROL_HOLD: 00852 strcpy(subclass, "Hold"); 00853 break; 00854 case AST_CONTROL_UNHOLD: 00855 strcpy(subclass, "Unhold"); 00856 break; 00857 case AST_CONTROL_T38_PARAMETERS: 00858 if (f->datalen != sizeof(struct ast_control_t38_parameters)) { 00859 message = "Invalid"; 00860 } else { 00861 struct ast_control_t38_parameters *parameters = f->data.ptr; 00862 enum ast_control_t38 state = parameters->request_response; 00863 if (state == AST_T38_REQUEST_NEGOTIATE) 00864 message = "Negotiation Requested"; 00865 else if (state == AST_T38_REQUEST_TERMINATE) 00866 message = "Negotiation Request Terminated"; 00867 else if (state == AST_T38_NEGOTIATED) 00868 message = "Negotiated"; 00869 else if (state == AST_T38_TERMINATED) 00870 message = "Terminated"; 00871 else if (state == AST_T38_REFUSED) 00872 message = "Refused"; 00873 } 00874 snprintf(subclass, sizeof(subclass), "T38_Parameters/%s", message); 00875 break; 00876 case -1: 00877 strcpy(subclass, "Stop generators"); 00878 break; 00879 default: 00880 snprintf(subclass, sizeof(subclass), "Unknown control '%d'", f->subclass.integer); 00881 } 00882 break; 00883 case AST_FRAME_NULL: 00884 strcpy(ftype, "Null Frame"); 00885 strcpy(subclass, "N/A"); 00886 break; 00887 case AST_FRAME_IAX: 00888 /* Should never happen */ 00889 strcpy(ftype, "IAX Specific"); 00890 snprintf(subclass, sizeof(subclass), "IAX Frametype %d", f->subclass.integer); 00891 break; 00892 case AST_FRAME_TEXT: 00893 strcpy(ftype, "Text"); 00894 strcpy(subclass, "N/A"); 00895 ast_copy_string(moreinfo, f->data.ptr, sizeof(moreinfo)); 00896 break; 00897 case AST_FRAME_IMAGE: 00898 strcpy(ftype, "Image"); 00899 snprintf(subclass, sizeof(subclass), "Image format %s\n", ast_getformatname(f->subclass.codec)); 00900 break; 00901 case AST_FRAME_HTML: 00902 strcpy(ftype, "HTML"); 00903 switch (f->subclass.integer) { 00904 case AST_HTML_URL: 00905 strcpy(subclass, "URL"); 00906 ast_copy_string(moreinfo, f->data.ptr, sizeof(moreinfo)); 00907 break; 00908 case AST_HTML_DATA: 00909 strcpy(subclass, "Data"); 00910 break; 00911 case AST_HTML_BEGIN: 00912 strcpy(subclass, "Begin"); 00913 break; 00914 case AST_HTML_END: 00915 strcpy(subclass, "End"); 00916 break; 00917 case AST_HTML_LDCOMPLETE: 00918 strcpy(subclass, "Load Complete"); 00919 break; 00920 case AST_HTML_NOSUPPORT: 00921 strcpy(subclass, "No Support"); 00922 break; 00923 case AST_HTML_LINKURL: 00924 strcpy(subclass, "Link URL"); 00925 ast_copy_string(moreinfo, f->data.ptr, sizeof(moreinfo)); 00926 break; 00927 case AST_HTML_UNLINK: 00928 strcpy(subclass, "Unlink"); 00929 break; 00930 case AST_HTML_LINKREJECT: 00931 strcpy(subclass, "Link Reject"); 00932 break; 00933 default: 00934 snprintf(subclass, sizeof(subclass), "Unknown HTML frame '%d'\n", f->subclass.integer); 00935 break; 00936 } 00937 break; 00938 case AST_FRAME_MODEM: 00939 strcpy(ftype, "Modem"); 00940 switch (f->subclass.integer) { 00941 case AST_MODEM_T38: 00942 strcpy(subclass, "T.38"); 00943 break; 00944 case AST_MODEM_V150: 00945 strcpy(subclass, "V.150"); 00946 break; 00947 default: 00948 snprintf(subclass, sizeof(subclass), "Unknown MODEM frame '%d'\n", f->subclass.integer); 00949 break; 00950 } 00951 break; 00952 default: 00953 snprintf(ftype, sizeof(ftype), "Unknown Frametype '%d'", f->frametype); 00954 } 00955 if (!ast_strlen_zero(moreinfo)) 00956 ast_verbose("%s [ TYPE: %s (%d) SUBCLASS: %s (%d) '%s' ] [%s]\n", 00957 term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)), 00958 term_color(cft, ftype, COLOR_BRRED, COLOR_BLACK, sizeof(cft)), 00959 f->frametype, 00960 term_color(csub, subclass, COLOR_BRCYAN, COLOR_BLACK, sizeof(csub)), 00961 f->subclass.integer, 00962 term_color(cmn, moreinfo, COLOR_BRGREEN, COLOR_BLACK, sizeof(cmn)), 00963 term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); 00964 else 00965 ast_verbose("%s [ TYPE: %s (%d) SUBCLASS: %s (%d) ] [%s]\n", 00966 term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)), 00967 term_color(cft, ftype, COLOR_BRRED, COLOR_BLACK, sizeof(cft)), 00968 f->frametype, 00969 term_color(csub, subclass, COLOR_BRCYAN, COLOR_BLACK, sizeof(csub)), 00970 f->subclass.integer, 00971 term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); 00972 }
void ast_frame_free | ( | struct ast_frame * | fr, | |
int | cache | |||
) |
Requests a frame to be allocated Frees a frame or list of frames.
fr | Frame to free, or head of list to free | |
cache | Whether to consider this frame for frame caching |
Definition at line 371 of file frame.c.
References __frame_free(), AST_LIST_NEXT, and ast_frame::next.
Referenced by mixmonitor_thread().
00372 { 00373 struct ast_frame *next; 00374 00375 for (next = AST_LIST_NEXT(frame, frame_list); 00376 frame; 00377 frame = next, next = frame ? AST_LIST_NEXT(frame, frame_list) : NULL) { 00378 __frame_free(frame, cache); 00379 } 00380 }
static struct ast_frame* ast_frame_header_new | ( | void | ) | [static] |
Definition at line 295 of file frame.c.
References ast_calloc, ast_calloc_cache, AST_LIST_REMOVE_HEAD, AST_MALLOCD_HDR, ast_threadstorage_get(), f, frame_cache, and frames.
Referenced by ast_frisolate().
00296 { 00297 struct ast_frame *f; 00298 00299 #if !defined(LOW_MEMORY) 00300 struct ast_frame_cache *frames; 00301 00302 if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) { 00303 if ((f = AST_LIST_REMOVE_HEAD(&frames->list, frame_list))) { 00304 size_t mallocd_len = f->mallocd_hdr_len; 00305 memset(f, 0, sizeof(*f)); 00306 f->mallocd_hdr_len = mallocd_len; 00307 f->mallocd = AST_MALLOCD_HDR; 00308 frames->size--; 00309 return f; 00310 } 00311 } 00312 if (!(f = ast_calloc_cache(1, sizeof(*f)))) 00313 return NULL; 00314 #else 00315 if (!(f = ast_calloc(1, sizeof(*f)))) 00316 return NULL; 00317 #endif 00318 00319 f->mallocd_hdr_len = sizeof(*f); 00320 00321 return f; 00322 }
Sums two frames of audio samples.
f1 | The first frame (which will contain the result) | |
f2 | The second frame |
Definition at line 1582 of file frame.c.
References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_slinear_saturated_add(), ast_frame_subclass::codec, ast_frame::data, ast_frame::frametype, ast_frame::ptr, ast_frame::samples, and ast_frame::subclass.
01583 { 01584 int count; 01585 short *data1, *data2; 01586 01587 if ((f1->frametype != AST_FRAME_VOICE) || (f1->subclass.codec != AST_FORMAT_SLINEAR)) 01588 return -1; 01589 01590 if ((f2->frametype != AST_FRAME_VOICE) || (f2->subclass.codec != AST_FORMAT_SLINEAR)) 01591 return -1; 01592 01593 if (f1->samples != f2->samples) 01594 return -1; 01595 01596 for (count = 0, data1 = f1->data.ptr, data2 = f2->data.ptr; 01597 count < f1->samples; 01598 count++, data1++, data2++) 01599 ast_slinear_saturated_add(data1, data2); 01600 01601 return 0; 01602 }
Copies a frame.
fr | frame to copy Duplicates a frame -- should only rarely be used, typically frisolate is good enough |
Definition at line 470 of file frame.c.
References ast_calloc_cache, ast_copy_flags, AST_FRFLAG_HAS_TIMING_INFO, AST_FRIENDLY_OFFSET, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, AST_MALLOCD_HDR, ast_threadstorage_get(), ast_frame_subclass::codec, ast_frame::data, ast_frame::datalen, ast_frame::delivery, f, frame_cache, frames, ast_frame::frametype, ast_frame::len, len(), ast_frame::mallocd, ast_frame::mallocd_hdr_len, ast_frame::offset, ast_frame::ptr, ast_frame::samples, ast_frame::seqno, ast_frame::src, ast_frame::subclass, ast_frame::ts, and ast_frame::uint32.
Referenced by __ast_queue_frame(), ast_frisolate(), ast_indicate_data(), ast_jb_put(), ast_rtp_write(), ast_slinfactory_feed(), audiohook_read_frame_single(), autoservice_run(), multicast_rtp_write(), process_dtmf_rfc2833(), recordthread(), and rpt().
00471 { 00472 struct ast_frame *out = NULL; 00473 int len, srclen = 0; 00474 void *buf = NULL; 00475 00476 #if !defined(LOW_MEMORY) 00477 struct ast_frame_cache *frames; 00478 #endif 00479 00480 /* Start with standard stuff */ 00481 len = sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen; 00482 /* If we have a source, add space for it */ 00483 /* 00484 * XXX Watch out here - if we receive a src which is not terminated 00485 * properly, we can be easily attacked. Should limit the size we deal with. 00486 */ 00487 if (f->src) 00488 srclen = strlen(f->src); 00489 if (srclen > 0) 00490 len += srclen + 1; 00491 00492 #if !defined(LOW_MEMORY) 00493 if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) { 00494 AST_LIST_TRAVERSE_SAFE_BEGIN(&frames->list, out, frame_list) { 00495 if (out->mallocd_hdr_len >= len) { 00496 size_t mallocd_len = out->mallocd_hdr_len; 00497 00498 AST_LIST_REMOVE_CURRENT(frame_list); 00499 memset(out, 0, sizeof(*out)); 00500 out->mallocd_hdr_len = mallocd_len; 00501 buf = out; 00502 frames->size--; 00503 break; 00504 } 00505 } 00506 AST_LIST_TRAVERSE_SAFE_END; 00507 } 00508 #endif 00509 00510 if (!buf) { 00511 if (!(buf = ast_calloc_cache(1, len))) 00512 return NULL; 00513 out = buf; 00514 out->mallocd_hdr_len = len; 00515 } 00516 00517 out->frametype = f->frametype; 00518 out->subclass.codec = f->subclass.codec; 00519 out->datalen = f->datalen; 00520 out->samples = f->samples; 00521 out->delivery = f->delivery; 00522 /* Set us as having malloc'd header only, so it will eventually 00523 get freed. */ 00524 out->mallocd = AST_MALLOCD_HDR; 00525 out->offset = AST_FRIENDLY_OFFSET; 00526 if (out->datalen) { 00527 out->data.ptr = buf + sizeof(*out) + AST_FRIENDLY_OFFSET; 00528 memcpy(out->data.ptr, f->data.ptr, out->datalen); 00529 } else { 00530 out->data.uint32 = f->data.uint32; 00531 } 00532 if (srclen > 0) { 00533 /* This may seem a little strange, but it's to avoid a gcc (4.2.4) compiler warning */ 00534 char *src; 00535 out->src = buf + sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen; 00536 src = (char *) out->src; 00537 /* Must have space since we allocated for it */ 00538 strcpy(src, f->src); 00539 } 00540 ast_copy_flags(out, f, AST_FRFLAG_HAS_TIMING_INFO); 00541 out->ts = f->ts; 00542 out->len = f->len; 00543 out->seqno = f->seqno; 00544 return out; 00545 }
Makes a frame independent of any static storage.
fr | frame to act upon Take a frame, and if it's not been malloc'd, make a malloc'd copy and if the data hasn't been malloced then make the data malloc'd. If you need to store frames, say for queueing, then you should call this function. |
Definition at line 387 of file frame.c.
References ast_copy_flags, ast_frame_header_new(), ast_frdup(), ast_free, AST_FRFLAG_HAS_TIMING_INFO, AST_FRIENDLY_OFFSET, ast_malloc, AST_MALLOCD_DATA, AST_MALLOCD_HDR, AST_MALLOCD_SRC, ast_strdup, ast_test_flag, ast_frame_subclass::codec, ast_frame::data, ast_frame::datalen, ast_frame::frametype, ast_frame::len, ast_frame::mallocd, ast_frame::offset, ast_frame::ptr, ast_frame::samples, ast_frame::seqno, ast_frame::src, ast_frame::subclass, ast_frame::ts, and ast_frame::uint32.
Referenced by __ast_answer(), ast_rtp_read(), ast_safe_sleep_conditional(), ast_slinfactory_feed(), ast_trans_frameout(), ast_write(), autoservice_run(), dahdi_decoder_frameout(), dahdi_encoder_frameout(), feature_request_and_dial(), jpeg_read_image(), read_frame(), spandsp_fax_read(), and t38_tx_packet_handler().
00388 { 00389 struct ast_frame *out; 00390 void *newdata; 00391 00392 /* if none of the existing frame is malloc'd, let ast_frdup() do it 00393 since it is more efficient 00394 */ 00395 if (fr->mallocd == 0) { 00396 return ast_frdup(fr); 00397 } 00398 00399 /* if everything is already malloc'd, we are done */ 00400 if ((fr->mallocd & (AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA)) == 00401 (AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA)) { 00402 return fr; 00403 } 00404 00405 if (!(fr->mallocd & AST_MALLOCD_HDR)) { 00406 /* Allocate a new header if needed */ 00407 if (!(out = ast_frame_header_new())) { 00408 return NULL; 00409 } 00410 out->frametype = fr->frametype; 00411 out->subclass.codec = fr->subclass.codec; 00412 out->datalen = fr->datalen; 00413 out->samples = fr->samples; 00414 out->offset = fr->offset; 00415 /* Copy the timing data */ 00416 ast_copy_flags(out, fr, AST_FRFLAG_HAS_TIMING_INFO); 00417 if (ast_test_flag(fr, AST_FRFLAG_HAS_TIMING_INFO)) { 00418 out->ts = fr->ts; 00419 out->len = fr->len; 00420 out->seqno = fr->seqno; 00421 } 00422 } else { 00423 out = fr; 00424 } 00425 00426 if (!(fr->mallocd & AST_MALLOCD_SRC) && fr->src) { 00427 if (!(out->src = ast_strdup(fr->src))) { 00428 if (out != fr) { 00429 ast_free(out); 00430 } 00431 return NULL; 00432 } 00433 } else { 00434 out->src = fr->src; 00435 fr->src = NULL; 00436 fr->mallocd &= ~AST_MALLOCD_SRC; 00437 } 00438 00439 if (!(fr->mallocd & AST_MALLOCD_DATA)) { 00440 if (!fr->datalen) { 00441 out->data.uint32 = fr->data.uint32; 00442 out->mallocd = AST_MALLOCD_HDR | AST_MALLOCD_SRC; 00443 return out; 00444 } 00445 if (!(newdata = ast_malloc(fr->datalen + AST_FRIENDLY_OFFSET))) { 00446 if (out->src != fr->src) { 00447 ast_free((void *) out->src); 00448 } 00449 if (out != fr) { 00450 ast_free(out); 00451 } 00452 return NULL; 00453 } 00454 newdata += AST_FRIENDLY_OFFSET; 00455 out->offset = AST_FRIENDLY_OFFSET; 00456 out->datalen = fr->datalen; 00457 memcpy(newdata, fr->data.ptr, fr->datalen); 00458 out->data.ptr = newdata; 00459 } else { 00460 out->data = fr->data; 00461 memset(&fr->data, 0, sizeof(fr->data)); 00462 fr->mallocd &= ~AST_MALLOCD_DATA; 00463 } 00464 00465 out->mallocd = AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA; 00466 00467 return out; 00468 }
struct ast_format_list* ast_get_format_list | ( | size_t * | size | ) |
Definition at line 563 of file frame.c.
References ARRAY_LEN, and AST_FORMAT_LIST.
Referenced by ast_data_add_codecs(), complete_trans_path_choice(), and handle_cli_core_show_translation().
00564 { 00565 *size = ARRAY_LEN(AST_FORMAT_LIST); 00566 return AST_FORMAT_LIST; 00567 }
struct ast_format_list* ast_get_format_list_index | ( | int | idx | ) |
Definition at line 558 of file frame.c.
References AST_FORMAT_LIST.
00559 { 00560 return &AST_FORMAT_LIST[idx]; 00561 }
format_t ast_getformatbyname | ( | const char * | name | ) |
Gets a format from a name.
name | string of format |
Definition at line 632 of file frame.c.
References ARRAY_LEN, ast_expand_codec_alias(), AST_FORMAT_LIST, ast_format_list::bits, and format.
Referenced by ast_parse_allow_disallow(), iax_template_parse(), load_moh_classes(), local_ast_moh_start(), and try_suggested_sip_codec().
00633 { 00634 int x, all; 00635 format_t format = 0; 00636 00637 all = strcasecmp(name, "all") ? 0 : 1; 00638 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 00639 if (all || 00640 !strcasecmp(AST_FORMAT_LIST[x].name,name) || 00641 !strcasecmp(AST_FORMAT_LIST[x].name, ast_expand_codec_alias(name))) { 00642 format |= AST_FORMAT_LIST[x].bits; 00643 if (!all) 00644 break; 00645 } 00646 } 00647 00648 return format; 00649 }
char* ast_getformatname | ( | format_t | format | ) |
Get the name of a format.
format | id of format |
Definition at line 569 of file frame.c.
References ARRAY_LEN, AST_FORMAT_LIST, ast_format_list::bits, and ast_format_list::name.
Referenced by __ast_read(), __ast_register_translator(), __ast_smoother_feed(), _sip_show_peer(), _skinny_show_line(), add_codec_to_answer(), add_codec_to_sdp(), add_sdp(), add_tcodec_to_sdp(), add_vcodec_to_sdp(), agent_call(), ast_channel_make_compatible_helper(), ast_codec_get_len(), ast_codec_pref_string(), ast_do_masquerade(), ast_dsp_process(), ast_frame_dump(), ast_openvstream(), ast_rtp_instance_bridge(), ast_rtp_write(), ast_slinfactory_feed(), ast_stopstream(), ast_streamfile(), ast_translate_path_to_str(), ast_translator_build_path(), ast_unregister_translator(), ast_writestream(), background_detect_exec(), bridge_channel_join(), bridge_make_compatible(), conf_run(), dahdi_read(), dahdi_write(), do_waiting(), dump_versioned_codec(), eagi_exec(), func_channel_read(), function_iaxpeer(), function_sippeer(), g719write(), g726_write(), g729_write(), gsm_write(), gtalk_rtp_read(), gtalk_show_channels(), gtalk_write(), h263_write(), h264_write(), handle_cli_core_show_file_formats(), handle_cli_core_show_translation(), handle_cli_iax2_show_channels(), handle_cli_iax2_show_peer(), handle_cli_moh_show_classes(), handle_core_show_image_formats(), handle_open_receive_channel_ack_message(), iax2_request(), iax_show_provisioning(), ilbc_write(), isAnsweringMachine(), jack_hook_callback(), jingle_rtp_read(), jingle_show_channels(), jingle_write(), login_exec(), mgcp_rtp_read(), mgcp_write(), misdn_write(), moh_files_release(), moh_release(), nbs_request(), nbs_xwrite(), ogg_vorbis_write(), oh323_rtp_read(), oh323_write(), pcm_write(), phone_setup(), phone_write(), print_codec_to_cli(), print_frame(), process_sdp_a_audio(), rebuild_matrix(), register_translator(), remote_bridge_loop(), set_format(), set_local_capabilities(), set_peer_capabilities(), setup_rtp_connection(), sip_request_call(), sip_rtp_read(), sip_write(), siren14write(), siren7write(), skinny_new(), skinny_rtp_read(), skinny_set_rtp_peer(), skinny_write(), slinear_write(), socket_process(), start_rtp(), unistim_new(), unistim_request(), unistim_rtp_read(), unistim_write(), vox_write(), and wav_write().
00570 { 00571 int x; 00572 char *ret = "unknown"; 00573 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 00574 if (AST_FORMAT_LIST[x].bits == format) { 00575 ret = AST_FORMAT_LIST[x].name; 00576 break; 00577 } 00578 } 00579 return ret; 00580 }
char* ast_getformatname_multiple | ( | char * | buf, | |
size_t | size, | |||
format_t | format | |||
) |
Get the names of a set of formats.
buf | a buffer for the output string | |
size | size of buf (bytes) | |
format | the format (combined IDs of codecs) Prints a list of readable codec names corresponding to "format". ex: for format=AST_FORMAT_GSM|AST_FORMAT_SPEEX|AST_FORMAT_ILBC it will return "0x602 (GSM|SPEEX|ILBC)" |
Definition at line 582 of file frame.c.
References ARRAY_LEN, ast_copy_string(), AST_FORMAT_LIST, ast_format_list::bits, len(), and name.
Referenced by __ast_read(), _sip_show_peer(), _skinny_show_device(), _skinny_show_line(), add_sdp(), alsa_request(), ast_best_codec(), ast_bridge_new(), ast_codec_get_samples(), ast_request(), ast_streamfile(), bridge_make_compatible(), console_request(), find_best_technology(), function_iaxpeer(), function_sippeer(), gtalk_is_answered(), gtalk_newcall(), gtalk_write(), handle_capabilities_res_message(), handle_cli_core_show_channeltype(), handle_cli_iax2_show_peer(), handle_showchan(), jingle_write(), mgcp_request(), mgcp_write(), oh323_request(), oh323_write(), oss_request(), phone_request(), process_sdp(), serialize_showchan(), set_format(), setup_rtp_connection(), show_channels_cb(), sip_new(), sip_request_call(), sip_show_channel(), sip_show_settings(), sip_write(), skinny_new(), skinny_request(), skinny_write(), smart_bridge_operation(), socket_process(), start_rtp(), unistim_new(), unistim_request(), and unistim_write().
00583 { 00584 int x; 00585 unsigned len; 00586 char *start, *end = buf; 00587 00588 if (!size) 00589 return buf; 00590 snprintf(end, size, "0x%llx (", (unsigned long long) format); 00591 len = strlen(end); 00592 end += len; 00593 size -= len; 00594 start = end; 00595 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 00596 if (AST_FORMAT_LIST[x].bits & format) { 00597 snprintf(end, size, "%s|", AST_FORMAT_LIST[x].name); 00598 len = strlen(end); 00599 end += len; 00600 size -= len; 00601 } 00602 } 00603 if (start == end) 00604 ast_copy_string(start, "nothing)", size); 00605 else if (size > 1) 00606 *(end - 1) = ')'; 00607 return buf; 00608 }
int ast_parse_allow_disallow | ( | struct ast_codec_pref * | pref, | |
format_t * | mask, | |||
const char * | list, | |||
int | allowing | |||
) |
Parse an "allow" or "deny" line in a channel or device configuration and update the capabilities mask and pref if provided. Video codecs are not added to codec preference lists, since we can not transcode.
Definition at line 1247 of file frame.c.
References ast_codec_pref_append(), ast_codec_pref_remove(), ast_codec_pref_setsize(), ast_debug, ast_getformatbyname(), ast_log(), ast_strdupa, format, LOG_WARNING, parse(), and strsep().
Referenced by action_originate(), apply_outgoing(), build_peer(), build_user(), config_parse_variables(), gtalk_create_member(), gtalk_load_config(), jingle_create_member(), jingle_load_config(), set_config(), skinny_unregister(), and update_common_options().
01248 { 01249 int errors = 0, framems = 0; 01250 char *parse = NULL, *this = NULL, *psize = NULL; 01251 format_t format = 0; 01252 01253 parse = ast_strdupa(list); 01254 while ((this = strsep(&parse, ","))) { 01255 framems = 0; 01256 if ((psize = strrchr(this, ':'))) { 01257 *psize++ = '\0'; 01258 ast_debug(1, "Packetization for codec: %s is %s\n", this, psize); 01259 framems = atoi(psize); 01260 if (framems < 0) { 01261 framems = 0; 01262 errors++; 01263 ast_log(LOG_WARNING, "Bad packetization value for codec %s\n", this); 01264 } 01265 } 01266 if (!(format = ast_getformatbyname(this))) { 01267 ast_log(LOG_WARNING, "Cannot %s unknown format '%s'\n", allowing ? "allow" : "disallow", this); 01268 errors++; 01269 continue; 01270 } 01271 01272 if (mask) { 01273 if (allowing) 01274 *mask |= format; 01275 else 01276 *mask &= ~format; 01277 } 01278 01279 /* Set up a preference list for audio. Do not include video in preferences 01280 since we can not transcode video and have to use whatever is offered 01281 */ 01282 if (pref && (format & AST_FORMAT_AUDIO_MASK)) { 01283 if (strcasecmp(this, "all")) { 01284 if (allowing) { 01285 ast_codec_pref_append(pref, format); 01286 ast_codec_pref_setsize(pref, format, framems); 01287 } 01288 else 01289 ast_codec_pref_remove(pref, format); 01290 } else if (!allowing) { 01291 memset(pref, 0, sizeof(*pref)); 01292 } 01293 } 01294 } 01295 return errors; 01296 }
void ast_smoother_free | ( | struct ast_smoother * | s | ) |
Definition at line 290 of file frame.c.
References ast_free.
Referenced by ast_rtp_destroy(), ast_rtp_write(), destroy_session(), and generic_fax_exec().
00291 { 00292 ast_free(s); 00293 }
int ast_smoother_get_flags | ( | struct ast_smoother * | s | ) |
Definition at line 189 of file frame.c.
References ast_smoother::flags.
00190 { 00191 return s->flags; 00192 }
struct ast_smoother* ast_smoother_new | ( | int | size | ) |
Definition at line 179 of file frame.c.
References ast_malloc, and ast_smoother_reset().
Referenced by ast_rtp_write(), and generic_fax_exec().
00180 { 00181 struct ast_smoother *s; 00182 if (size < 1) 00183 return NULL; 00184 if ((s = ast_malloc(sizeof(*s)))) 00185 ast_smoother_reset(s, size); 00186 return s; 00187 }
struct ast_frame* ast_smoother_read | ( | struct ast_smoother * | s | ) |
Definition at line 240 of file frame.c.
References ast_format_rate(), AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), ast_samp2tv(), AST_SMOOTHER_FLAG_G729, ast_tvadd(), ast_tvzero(), ast_frame_subclass::codec, ast_smoother::data, ast_frame::data, ast_frame::datalen, ast_smoother::delivery, ast_frame::delivery, ast_smoother::f, ast_smoother::flags, ast_smoother::format, ast_smoother::framedata, ast_frame::frametype, ast_smoother::len, len(), LOG_WARNING, ast_frame::offset, ast_smoother::opt, ast_frame::ptr, ast_frame::samples, ast_smoother::samplesperbyte, ast_smoother::size, and ast_frame::subclass.
Referenced by ast_rtp_write(), and generic_fax_exec().
00241 { 00242 struct ast_frame *opt; 00243 int len; 00244 00245 /* IF we have an optimization frame, send it */ 00246 if (s->opt) { 00247 if (s->opt->offset < AST_FRIENDLY_OFFSET) 00248 ast_log(LOG_WARNING, "Returning a frame of inappropriate offset (%d).\n", 00249 s->opt->offset); 00250 opt = s->opt; 00251 s->opt = NULL; 00252 return opt; 00253 } 00254 00255 /* Make sure we have enough data */ 00256 if (s->len < s->size) { 00257 /* Or, if this is a G.729 frame with VAD on it, send it immediately anyway */ 00258 if (!((s->flags & AST_SMOOTHER_FLAG_G729) && (s->len % 10))) 00259 return NULL; 00260 } 00261 len = s->size; 00262 if (len > s->len) 00263 len = s->len; 00264 /* Make frame */ 00265 s->f.frametype = AST_FRAME_VOICE; 00266 s->f.subclass.codec = s->format; 00267 s->f.data.ptr = s->framedata + AST_FRIENDLY_OFFSET; 00268 s->f.offset = AST_FRIENDLY_OFFSET; 00269 s->f.datalen = len; 00270 /* Samples will be improper given VAD, but with VAD the concept really doesn't even exist */ 00271 s->f.samples = len * s->samplesperbyte; /* XXX rounding */ 00272 s->f.delivery = s->delivery; 00273 /* Fill Data */ 00274 memcpy(s->f.data.ptr, s->data, len); 00275 s->len -= len; 00276 /* Move remaining data to the front if applicable */ 00277 if (s->len) { 00278 /* In principle this should all be fine because if we are sending 00279 G.729 VAD, the next timestamp will take over anyawy */ 00280 memmove(s->data, s->data + len, s->len); 00281 if (!ast_tvzero(s->delivery)) { 00282 /* If we have delivery time, increment it, otherwise, leave it at 0 */ 00283 s->delivery = ast_tvadd(s->delivery, ast_samp2tv(s->f.samples, ast_format_rate(s->format))); 00284 } 00285 } 00286 /* Return frame */ 00287 return &s->f; 00288 }
void ast_smoother_reconfigure | ( | struct ast_smoother * | s, | |
int | bytes | |||
) |
Reconfigure an existing smoother to output a different number of bytes per frame.
s | the smoother to reconfigure | |
bytes | the desired number of bytes per output frame |
Definition at line 157 of file frame.c.
References ast_smoother::opt, ast_smoother::opt_needs_swap, ast_smoother::size, and smoother_frame_feed().
00158 { 00159 /* if there is no change, then nothing to do */ 00160 if (s->size == bytes) { 00161 return; 00162 } 00163 /* set the new desired output size */ 00164 s->size = bytes; 00165 /* if there is no 'optimized' frame in the smoother, 00166 * then there is nothing left to do 00167 */ 00168 if (!s->opt) { 00169 return; 00170 } 00171 /* there is an 'optimized' frame here at the old size, 00172 * but it must now be put into the buffer so the data 00173 * can be extracted at the new size 00174 */ 00175 smoother_frame_feed(s, s->opt, s->opt_needs_swap); 00176 s->opt = NULL; 00177 }
void ast_smoother_reset | ( | struct ast_smoother * | s, | |
int | bytes | |||
) |
void ast_smoother_set_flags | ( | struct ast_smoother * | s, | |
int | flags | |||
) |
Definition at line 194 of file frame.c.
References ast_smoother::flags.
Referenced by ast_rtp_write().
int ast_smoother_test_flag | ( | struct ast_smoother * | s, | |
int | flag | |||
) |
Definition at line 199 of file frame.c.
References ast_smoother::flags.
Referenced by ast_rtp_write().
00200 { 00201 return (s->flags & flag); 00202 }
void ast_swapcopy_samples | ( | void * | dst, | |
const void * | src, | |||
int | samples | |||
) |
Definition at line 547 of file frame.c.
Referenced by __ast_smoother_feed(), iax_frame_wrap(), phone_write_buf(), and smoother_frame_feed().
00548 { 00549 int i; 00550 unsigned short *dst_s = dst; 00551 const unsigned short *src_s = src; 00552 00553 for (i = 0; i < samples; i++) 00554 dst_s[i] = (src_s[i]<<8) | (src_s[i]>>8); 00555 }
static void frame_cache_cleanup | ( | void * | data | ) | [static] |
Definition at line 325 of file frame.c.
References ast_free, AST_LIST_REMOVE_HEAD, f, and frames.
00326 { 00327 struct ast_frame_cache *frames = data; 00328 struct ast_frame *f; 00329 00330 while ((f = AST_LIST_REMOVE_HEAD(&frames->list, frame_list))) 00331 ast_free(f); 00332 00333 ast_free(frames); 00334 }
static int g723_len | ( | unsigned char | buf | ) | [static] |
Definition at line 1298 of file frame.c.
References ast_log(), LOG_WARNING, type, TYPE_HIGH, TYPE_LOW, TYPE_MASK, and TYPE_SILENCE.
Referenced by g723_samples().
01299 { 01300 enum frame_type type = buf & TYPE_MASK; 01301 01302 switch(type) { 01303 case TYPE_DONTSEND: 01304 return 0; 01305 break; 01306 case TYPE_SILENCE: 01307 return 4; 01308 break; 01309 case TYPE_HIGH: 01310 return 24; 01311 break; 01312 case TYPE_LOW: 01313 return 20; 01314 break; 01315 default: 01316 ast_log(LOG_WARNING, "Badly encoded frame (%d)\n", type); 01317 } 01318 return -1; 01319 }
static int g723_samples | ( | unsigned char * | buf, | |
int | maxlen | |||
) | [static] |
Definition at line 1321 of file frame.c.
References g723_len().
Referenced by ast_codec_get_samples().
01322 { 01323 int pos = 0; 01324 int samples = 0; 01325 int res; 01326 while(pos < maxlen) { 01327 res = g723_len(buf[pos]); 01328 if (res <= 0) 01329 break; 01330 samples += 240; 01331 pos += res; 01332 } 01333 return samples; 01334 }
static unsigned char get_n_bits_at | ( | unsigned char * | data, | |
int | n, | |||
int | bit | |||
) | [static] |
Definition at line 1336 of file frame.c.
Referenced by speex_get_wb_sz_at(), and speex_samples().
01337 { 01338 int byte = bit / 8; /* byte containing first bit */ 01339 int rem = 8 - (bit % 8); /* remaining bits in first byte */ 01340 unsigned char ret = 0; 01341 01342 if (n <= 0 || n > 8) 01343 return 0; 01344 01345 if (rem < n) { 01346 ret = (data[byte] << (n - rem)); 01347 ret |= (data[byte + 1] >> (8 - n + rem)); 01348 } else { 01349 ret = (data[byte] >> (rem - n)); 01350 } 01351 01352 return (ret & (0xff >> (8 - n))); 01353 }
int init_framer | ( | void | ) |
Provided by frame.c
Definition at line 981 of file frame.c.
References ARRAY_LEN, ast_cli_register_multiple(), and my_clis.
Referenced by main().
00982 { 00983 ast_cli_register_multiple(my_clis, ARRAY_LEN(my_clis)); 00984 return 0; 00985 }
static char* show_codec_n | ( | struct ast_cli_entry * | e, | |
int | cmd, | |||
struct ast_cli_args * | a | |||
) | [static] |
Definition at line 731 of file frame.c.
References ast_cli_args::argc, ast_cli_args::argv, ast_cli(), ast_codec2str(), CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, ast_cli_args::fd, and ast_cli_entry::usage.
00732 { 00733 format_t codec; 00734 int i, found = 0; 00735 long long type_punned_codec; 00736 00737 switch (cmd) { 00738 case CLI_INIT: 00739 e->command = "core show codec"; 00740 e->usage = 00741 "Usage: core show codec <number>\n" 00742 " Displays codec mapping\n"; 00743 return NULL; 00744 case CLI_GENERATE: 00745 return NULL; 00746 } 00747 00748 if (a->argc != 4) 00749 return CLI_SHOWUSAGE; 00750 00751 if (sscanf(a->argv[3], "%30lld", &type_punned_codec) != 1) { 00752 return CLI_SHOWUSAGE; 00753 } 00754 codec = type_punned_codec; 00755 00756 for (i = 0; i < 63; i++) 00757 if (codec & (1LL << i)) { 00758 found = 1; 00759 ast_cli(a->fd, "%11llu (1 << %2d) %s\n", 1LL << i, i, ast_codec2str(1LL << i)); 00760 } 00761 00762 if (!found) 00763 ast_cli(a->fd, "Codec %lld not found\n", (long long) codec); 00764 00765 return CLI_SUCCESS; 00766 }
static char* show_codecs | ( | struct ast_cli_entry * | e, | |
int | cmd, | |||
struct ast_cli_args * | a | |||
) | [static] |
Definition at line 664 of file frame.c.
References ast_cli_args::argc, ast_cli_args::argv, ast_cli(), AST_FORMAT_AUDIO_MASK, AST_FORMAT_VIDEO_MASK, ast_opt_dont_warn, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, ast_cli_entry::command, ast_cli_args::fd, and ast_cli_entry::usage.
00665 { 00666 int i, found=0; 00667 char hex[25]; 00668 00669 switch (cmd) { 00670 case CLI_INIT: 00671 e->command = "core show codecs [audio|video|image|text]"; 00672 e->usage = 00673 "Usage: core show codecs [audio|video|image|text]\n" 00674 " Displays codec mapping\n"; 00675 return NULL; 00676 case CLI_GENERATE: 00677 return NULL; 00678 } 00679 00680 if ((a->argc < 3) || (a->argc > 4)) 00681 return CLI_SHOWUSAGE; 00682 00683 if (!ast_opt_dont_warn) 00684 ast_cli(a->fd, "Disclaimer: this command is for informational purposes only.\n" 00685 "\tIt does not indicate anything about your configuration.\n"); 00686 00687 ast_cli(a->fd, "%19s %9s %20s TYPE %8s %s\n","INT","BINARY","HEX","NAME","DESCRIPTION"); 00688 ast_cli(a->fd, "-----------------------------------------------------------------------------------\n"); 00689 for (i = 0; i < 63; i++) { 00690 00691 if (a->argc == 4) { 00692 if (!strcasecmp(a->argv[3], "audio")) { 00693 if (!((1LL << i) & AST_FORMAT_AUDIO_MASK)) { 00694 continue; 00695 } 00696 } else if (!strcasecmp(a->argv[3], "video")) { 00697 if (!((1LL << i) & AST_FORMAT_VIDEO_MASK)) { 00698 continue; 00699 } 00700 } else if (!strcasecmp(a->argv[3], "image")) { 00701 if (i != 16 && i != 17) { 00702 continue; 00703 } 00704 } else if (!strcasecmp(a->argv[3], "text")) { 00705 if (!((1LL << i) & AST_FORMAT_TEXT_MASK)) { 00706 continue; 00707 } 00708 } else { 00709 continue; 00710 } 00711 } 00712 00713 snprintf(hex, sizeof(hex), "(0x%llx)", 1LL << i); 00714 ast_cli(a->fd, "%19llu (1 << %2d) %20s %5s %8s (%s)\n", 1LL << i, i, hex, 00715 ((1LL << i) & AST_FORMAT_AUDIO_MASK) ? "audio" : 00716 i == 16 || i == 17 ? "image" : 00717 ((1LL << i) & AST_FORMAT_VIDEO_MASK) ? "video" : 00718 ((1LL << i) & AST_FORMAT_TEXT_MASK) ? "text" : 00719 "(unk)", 00720 ast_getformatname(1LL << i), ast_codec2str(1LL << i)); 00721 found = 1; 00722 } 00723 00724 if (!found) { 00725 return CLI_SHOWUSAGE; 00726 } else { 00727 return CLI_SUCCESS; 00728 } 00729 }
static int smoother_frame_feed | ( | struct ast_smoother * | s, | |
struct ast_frame * | f, | |||
int | swap | |||
) | [static] |
Definition at line 129 of file frame.c.
References ast_log(), AST_SMOOTHER_FLAG_G729, ast_swapcopy_samples(), ast_tvzero(), ast_smoother::data, ast_smoother::delivery, f, ast_smoother::flags, ast_smoother::len, and LOG_NOTICE.
Referenced by __ast_smoother_feed(), and ast_smoother_reconfigure().
00130 { 00131 if (s->flags & AST_SMOOTHER_FLAG_G729) { 00132 if (s->len % 10) { 00133 ast_log(LOG_NOTICE, "Dropping extra frame of G.729 since we already have a VAD frame at the end\n"); 00134 return 0; 00135 } 00136 } 00137 if (swap) { 00138 ast_swapcopy_samples(s->data + s->len, f->data.ptr, f->samples); 00139 } else { 00140 memcpy(s->data + s->len, f->data.ptr, f->datalen); 00141 } 00142 /* If either side is empty, reset the delivery time */ 00143 if (!s->len || ast_tvzero(f->delivery) || ast_tvzero(s->delivery)) { /* XXX really ? */ 00144 s->delivery = f->delivery; 00145 } 00146 s->len += f->datalen; 00147 00148 return 0; 00149 }
static int speex_get_wb_sz_at | ( | unsigned char * | data, | |
int | len, | |||
int | bit | |||
) | [static] |
Definition at line 1355 of file frame.c.
References ast_log(), get_n_bits_at(), and LOG_WARNING.
Referenced by speex_samples().
01356 { 01357 static const int SpeexWBSubModeSz[] = { 01358 4, 36, 112, 192, 01359 352, 0, 0, 0 }; 01360 int off = bit; 01361 unsigned char c; 01362 01363 /* skip up to two wideband frames */ 01364 if (((len * 8 - off) >= 5) && 01365 get_n_bits_at(data, 1, off)) { 01366 c = get_n_bits_at(data, 3, off + 1); 01367 off += SpeexWBSubModeSz[c]; 01368 01369 if (((len * 8 - off) >= 5) && 01370 get_n_bits_at(data, 1, off)) { 01371 c = get_n_bits_at(data, 3, off + 1); 01372 off += SpeexWBSubModeSz[c]; 01373 01374 if (((len * 8 - off) >= 5) && 01375 get_n_bits_at(data, 1, off)) { 01376 ast_log(LOG_WARNING, "Encountered corrupt speex frame; too many wideband frames in a row.\n"); 01377 return -1; 01378 } 01379 } 01380 01381 } 01382 return off - bit; 01383 }
static int speex_samples | ( | unsigned char * | data, | |
int | len | |||
) | [static] |
Definition at line 1385 of file frame.c.
References ast_log(), get_n_bits_at(), LOG_WARNING, and speex_get_wb_sz_at().
Referenced by ast_codec_get_samples().
01386 { 01387 static const int SpeexSubModeSz[] = { 01388 5, 43, 119, 160, 01389 220, 300, 364, 492, 01390 79, 0, 0, 0, 01391 0, 0, 0, 0 }; 01392 static const int SpeexInBandSz[] = { 01393 1, 1, 4, 4, 01394 4, 4, 4, 4, 01395 8, 8, 16, 16, 01396 32, 32, 64, 64 }; 01397 int bit = 0; 01398 int cnt = 0; 01399 int off; 01400 unsigned char c; 01401 01402 while ((len * 8 - bit) >= 5) { 01403 /* skip wideband frames */ 01404 off = speex_get_wb_sz_at(data, len, bit); 01405 if (off < 0) { 01406 ast_log(LOG_WARNING, "Had error while reading wideband frames for speex samples\n"); 01407 break; 01408 } 01409 bit += off; 01410 01411 if ((len * 8 - bit) < 5) 01412 break; 01413 01414 /* get control bits */ 01415 c = get_n_bits_at(data, 5, bit); 01416 bit += 5; 01417 01418 if (c == 15) { 01419 /* terminator */ 01420 break; 01421 } else if (c == 14) { 01422 /* in-band signal; next 4 bits contain signal id */ 01423 c = get_n_bits_at(data, 4, bit); 01424 bit += 4; 01425 bit += SpeexInBandSz[c]; 01426 } else if (c == 13) { 01427 /* user in-band; next 4 bits contain msg len */ 01428 c = get_n_bits_at(data, 4, bit); 01429 bit += 4; 01430 /* after which it's 5-bit signal id + c bytes of data */ 01431 bit += 5 + c * 8; 01432 } else if (c > 8) { 01433 /* unknown */ 01434 ast_log(LOG_WARNING, "Unknown speex control frame %d\n", c); 01435 break; 01436 } else { 01437 /* skip number bits for submode (less the 5 control bits) */ 01438 bit += SpeexSubModeSz[c] - 5; 01439 cnt += 160; /* new frame */ 01440 } 01441 } 01442 return cnt; 01443 }
struct ast_format_list AST_FORMAT_LIST[] [static] |
Definition of supported media formats (codecs).
Definition at line 96 of file frame.c.
Referenced by ast_codec2str(), ast_codec_choose(), ast_codec_pref_append(), ast_codec_pref_getsize(), ast_codec_pref_index(), ast_codec_pref_prepend(), ast_codec_pref_remove(), ast_codec_pref_setsize(), ast_get_format_list(), ast_get_format_list_index(), ast_getformatbyname(), ast_getformatname(), and ast_getformatname_multiple().
struct ast_frame ast_null_frame = { AST_FRAME_NULL, } |
Queueing a null frame is fairly common, so we declare a global null frame object for this purpose instead of having to declare one on the stack
Definition at line 127 of file frame.c.
Referenced by __analog_handle_event(), __ast_channel_masquerade(), __ast_read(), __oh323_rtp_create(), __oh323_update_info(), agent_new(), agent_read(), ast_channel_setwhentohangup_tv(), ast_do_masquerade(), ast_rtcp_read(), ast_rtp_read(), ast_softhangup_nolock(), ast_udptl_read(), bridge_read(), conf_run(), console_read(), create_dtmf_frame(), dahdi_read(), gtalk_rtp_read(), handle_request_invite(), handle_response_invite(), iax2_read(), jingle_rtp_read(), local_read(), mgcp_rtp_read(), multicast_rtp_read(), oh323_read(), oh323_rtp_read(), process_sdp(), sip_read(), sip_rtp_read(), skinny_rtp_read(), spandsp_fax_read(), unistim_rtp_read(), and wakeup_sub().
struct ast_threadstorage frame_cache = { .once = PTHREAD_ONCE_INIT , .key_init = __init_frame_cache , .custom_init = NULL , } [static] |
struct ast_cli_entry my_clis[] [static] |
Initial value:
{ { .handler = show_codecs , .summary = "Displays a list of codecs" ,__VA_ARGS__ }, { .handler = show_codec_n , .summary = "Shows a specific codec" ,__VA_ARGS__ }, }
Definition at line 976 of file frame.c.
Referenced by init_framer().