#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 76 of file frame.c.
00076 { 00077 TYPE_HIGH, /* 0x0 */ 00078 TYPE_LOW, /* 0x1 */ 00079 TYPE_SILENCE, /* 0x2 */ 00080 TYPE_DONTSEND /* 0x3 */ 00081 };
int __ast_smoother_feed | ( | struct ast_smoother * | s, | |
struct ast_frame * | f, | |||
int | swap | |||
) |
Definition at line 208 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.
00209 { 00210 if (f->frametype != AST_FRAME_VOICE) { 00211 ast_log(LOG_WARNING, "Huh? Can't smooth a non-voice frame!\n"); 00212 return -1; 00213 } 00214 if (!s->format) { 00215 s->format = f->subclass.codec; 00216 s->samplesperbyte = (float)f->samples / (float)f->datalen; 00217 } else if (s->format != f->subclass.codec) { 00218 ast_log(LOG_WARNING, "Smoother was working on %s format frames, now trying to feed %s?\n", 00219 ast_getformatname(s->format), ast_getformatname(f->subclass.codec)); 00220 return -1; 00221 } 00222 if (s->len + f->datalen > SMOOTHER_SIZE) { 00223 ast_log(LOG_WARNING, "Out of smoother space\n"); 00224 return -1; 00225 } 00226 if (((f->datalen == s->size) || 00227 ((f->datalen < 10) && (s->flags & AST_SMOOTHER_FLAG_G729))) && 00228 !s->opt && 00229 !s->len && 00230 (f->offset >= AST_MIN_OFFSET)) { 00231 /* Optimize by sending the frame we just got 00232 on the next read, thus eliminating the douple 00233 copy */ 00234 if (swap) 00235 ast_swapcopy_samples(f->data.ptr, f->data.ptr, f->samples); 00236 s->opt = f; 00237 s->opt_needs_swap = swap ? 1 : 0; 00238 return 0; 00239 } 00240 00241 return smoother_frame_feed(s, f, swap); 00242 }
static void __frame_free | ( | struct ast_frame * | fr, | |
int | cache | |||
) | [static] |
Definition at line 341 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().
00342 { 00343 if (!fr->mallocd) 00344 return; 00345 00346 #if !defined(LOW_MEMORY) 00347 if (cache && fr->mallocd == AST_MALLOCD_HDR) { 00348 /* Cool, only the header is malloc'd, let's just cache those for now 00349 * to keep things simple... */ 00350 struct ast_frame_cache *frames; 00351 00352 if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames))) && 00353 (frames->size < FRAME_CACHE_MAX_SIZE)) { 00354 AST_LIST_INSERT_HEAD(&frames->list, fr, frame_list); 00355 frames->size++; 00356 return; 00357 } 00358 } 00359 #endif 00360 00361 if (fr->mallocd & AST_MALLOCD_DATA) { 00362 if (fr->data.ptr) 00363 ast_free(fr->data.ptr - fr->offset); 00364 } 00365 if (fr->mallocd & AST_MALLOCD_SRC) { 00366 if (fr->src) 00367 ast_free((void *) fr->src); 00368 } 00369 if (fr->mallocd & AST_MALLOCD_HDR) { 00370 ast_free(fr); 00371 } 00372 }
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 660 of file frame.c.
References ARRAY_LEN, AST_FORMAT_LIST, and ast_format_list::desc.
Referenced by moh_alloc(), and show_codec_n().
00661 { 00662 int x; 00663 char *ret = "unknown"; 00664 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 00665 if (AST_FORMAT_LIST[x].bits == codec) { 00666 ret = AST_FORMAT_LIST[x].desc; 00667 break; 00668 } 00669 } 00670 return ret; 00671 }
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 1243 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().
01244 { 01245 int x, slot; 01246 format_t ret = 0; 01247 01248 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01249 slot = pref->order[x]; 01250 01251 if (!slot) 01252 break; 01253 if (formats & AST_FORMAT_LIST[slot-1].bits) { 01254 ret = AST_FORMAT_LIST[slot-1].bits; 01255 break; 01256 } 01257 } 01258 if (ret & AST_FORMAT_AUDIO_MASK) 01259 return ret; 01260 01261 ast_debug(4, "Could not find preferred codec - %s\n", find_best ? "Going for the best codec" : "Returning zero codec"); 01262 01263 return find_best ? ast_best_codec(formats) : 0; 01264 }
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 1526 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().
01527 { 01528 int len = 0; 01529 01530 /* XXX Still need speex, and lpc10 XXX */ 01531 switch(format) { 01532 case AST_FORMAT_G723_1: 01533 len = (samples / 240) * 20; 01534 break; 01535 case AST_FORMAT_ILBC: 01536 len = (samples / 240) * 50; 01537 break; 01538 case AST_FORMAT_GSM: 01539 len = (samples / 160) * 33; 01540 break; 01541 case AST_FORMAT_G729A: 01542 len = samples / 8; 01543 break; 01544 case AST_FORMAT_SLINEAR: 01545 case AST_FORMAT_SLINEAR16: 01546 len = samples * 2; 01547 break; 01548 case AST_FORMAT_ULAW: 01549 case AST_FORMAT_ALAW: 01550 case AST_FORMAT_TESTLAW: 01551 len = samples; 01552 break; 01553 case AST_FORMAT_G722: 01554 case AST_FORMAT_ADPCM: 01555 case AST_FORMAT_G726: 01556 case AST_FORMAT_G726_AAL2: 01557 len = samples / 2; 01558 break; 01559 case AST_FORMAT_SIREN7: 01560 /* 16,000 samples per second at 32kbps is 4,000 bytes per second */ 01561 len = samples / (16000 / 4000); 01562 break; 01563 case AST_FORMAT_SIREN14: 01564 /* 32,000 samples per second at 48kbps is 6,000 bytes per second */ 01565 len = (int) samples / ((float) 32000 / 6000); 01566 break; 01567 case AST_FORMAT_G719: 01568 /* 48,000 samples per second at 64kbps is 8,000 bytes per second */ 01569 len = (int) samples / ((float) 48000 / 8000); 01570 break; 01571 default: 01572 ast_log(LOG_WARNING, "Unable to calculate sample length for format %s\n", ast_getformatname(format)); 01573 } 01574 01575 return len; 01576 }
int ast_codec_get_samples | ( | struct ast_frame * | f | ) |
Returns the number of samples contained in the frame.
Definition at line 1464 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(), dahdi_encoder_frameout(), isAnsweringMachine(), moh_generate(), schedule_delivery(), socket_process(), and socket_process_meta().
01465 { 01466 int samples = 0; 01467 char tmp[64]; 01468 01469 switch (f->subclass.codec) { 01470 case AST_FORMAT_SPEEX: 01471 samples = speex_samples(f->data.ptr, f->datalen); 01472 break; 01473 case AST_FORMAT_SPEEX16: 01474 samples = 2 * speex_samples(f->data.ptr, f->datalen); 01475 break; 01476 case AST_FORMAT_G723_1: 01477 samples = g723_samples(f->data.ptr, f->datalen); 01478 break; 01479 case AST_FORMAT_ILBC: 01480 samples = 240 * (f->datalen / 50); 01481 break; 01482 case AST_FORMAT_GSM: 01483 samples = 160 * (f->datalen / 33); 01484 break; 01485 case AST_FORMAT_G729A: 01486 samples = f->datalen * 8; 01487 break; 01488 case AST_FORMAT_SLINEAR: 01489 case AST_FORMAT_SLINEAR16: 01490 samples = f->datalen / 2; 01491 break; 01492 case AST_FORMAT_LPC10: 01493 /* assumes that the RTP packet contains one LPC10 frame */ 01494 samples = 22 * 8; 01495 samples += (((char *)(f->data.ptr))[7] & 0x1) * 8; 01496 break; 01497 case AST_FORMAT_ULAW: 01498 case AST_FORMAT_ALAW: 01499 case AST_FORMAT_TESTLAW: 01500 samples = f->datalen; 01501 break; 01502 case AST_FORMAT_G722: 01503 case AST_FORMAT_ADPCM: 01504 case AST_FORMAT_G726: 01505 case AST_FORMAT_G726_AAL2: 01506 samples = f->datalen * 2; 01507 break; 01508 case AST_FORMAT_SIREN7: 01509 /* 16,000 samples per second at 32kbps is 4,000 bytes per second */ 01510 samples = f->datalen * (16000 / 4000); 01511 break; 01512 case AST_FORMAT_SIREN14: 01513 /* 32,000 samples per second at 48kbps is 6,000 bytes per second */ 01514 samples = (int) f->datalen * ((float) 32000 / 6000); 01515 break; 01516 case AST_FORMAT_G719: 01517 /* 48,000 samples per second at 64kbps is 8,000 bytes per second */ 01518 samples = (int) f->datalen * ((float) 48000 / 8000); 01519 break; 01520 default: 01521 ast_log(LOG_WARNING, "Unable to calculate samples for format %s\n", ast_getformatname_multiple(tmp, sizeof(tmp), f->subclass.codec)); 01522 } 01523 return samples; 01524 }
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 1093 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().
01094 { 01095 int x, newindex = 0; 01096 01097 ast_codec_pref_remove(pref, format); 01098 01099 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01100 if (AST_FORMAT_LIST[x].bits == format) { 01101 newindex = x + 1; 01102 break; 01103 } 01104 } 01105 01106 if (newindex) { 01107 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01108 if (!pref->order[x]) { 01109 pref->order[x] = newindex; 01110 break; 01111 } 01112 } 01113 } 01114 01115 return x; 01116 }
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 996 of file frame.c.
References ast_codec_pref::order.
Referenced by check_access(), create_addr(), dump_prefs(), and socket_process().
00997 { 00998 int x, differential = (int) 'A', mem; 00999 char *from, *to; 01000 01001 if (right) { 01002 from = pref->order; 01003 to = buf; 01004 mem = size; 01005 } else { 01006 to = pref->order; 01007 from = buf; 01008 mem = sizeof(format_t) * 8; 01009 } 01010 01011 memset(to, 0, mem); 01012 for (x = 0; x < sizeof(format_t) * 8; x++) { 01013 if (!from[x]) 01014 break; 01015 to[x] = right ? (from[x] + differential) : (from[x] - differential); 01016 } 01017 }
struct ast_format_list ast_codec_pref_getsize | ( | struct ast_codec_pref * | pref, | |
format_t | format | |||
) |
Get packet size for codec.
Definition at line 1199 of file frame.c.
References ARRAY_LEN, AST_FORMAT_LIST, ast_getformatname(), ast_log(), AST_LOG_WARNING, 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().
01200 { 01201 int x, idx = -1, framems = 0; 01202 struct ast_format_list fmt = { 0, }; 01203 01204 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01205 if (AST_FORMAT_LIST[x].bits == format) { 01206 fmt = AST_FORMAT_LIST[x]; 01207 idx = x; 01208 break; 01209 } 01210 } 01211 01212 if (idx < 0) { 01213 ast_log(AST_LOG_WARNING, "Format %s unknown; unable to get preferred codec packet size\n", ast_getformatname(format)); 01214 return fmt; 01215 } 01216 01217 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01218 if (pref->order[x] == (idx + 1)) { 01219 framems = pref->framing[x]; 01220 break; 01221 } 01222 } 01223 01224 /* size validation */ 01225 if (!framems) 01226 framems = AST_FORMAT_LIST[idx].def_ms; 01227 01228 if (AST_FORMAT_LIST[idx].inc_ms && framems % AST_FORMAT_LIST[idx].inc_ms) /* avoid division by zero */ 01229 framems -= framems % AST_FORMAT_LIST[idx].inc_ms; 01230 01231 if (framems < AST_FORMAT_LIST[idx].min_ms) 01232 framems = AST_FORMAT_LIST[idx].min_ms; 01233 01234 if (framems > AST_FORMAT_LIST[idx].max_ms) 01235 framems = AST_FORMAT_LIST[idx].max_ms; 01236 01237 fmt.cur_ms = framems; 01238 01239 return fmt; 01240 }
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 1055 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().
01056 { 01057 int slot = 0; 01058 01059 if ((idx >= 0) && (idx < sizeof(pref->order))) { 01060 slot = pref->order[idx]; 01061 } 01062 01063 return slot ? AST_FORMAT_LIST[slot - 1].bits : 0; 01064 }
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 1119 of file frame.c.
References ARRAY_LEN, AST_FORMAT_LIST, ast_codec_pref::framing, and ast_codec_pref::order.
Referenced by create_addr().
01120 { 01121 int x, newindex = 0; 01122 01123 /* First step is to get the codecs "index number" */ 01124 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01125 if (AST_FORMAT_LIST[x].bits == format) { 01126 newindex = x + 1; 01127 break; 01128 } 01129 } 01130 /* Done if its unknown */ 01131 if (!newindex) 01132 return; 01133 01134 /* Now find any existing occurrence, or the end */ 01135 for (x = 0; x < sizeof(format_t) * 8; x++) { 01136 if (!pref->order[x] || pref->order[x] == newindex) 01137 break; 01138 } 01139 01140 /* If we failed to find any occurrence, set to the end */ 01141 if (x == sizeof(format_t) * 8) { 01142 --x; 01143 } 01144 01145 if (only_if_existing && !pref->order[x]) 01146 return; 01147 01148 /* Move down to make space to insert - either all the way to the end, 01149 or as far as the existing location (which will be overwritten) */ 01150 for (; x > 0; x--) { 01151 pref->order[x] = pref->order[x - 1]; 01152 pref->framing[x] = pref->framing[x - 1]; 01153 } 01154 01155 /* And insert the new entry */ 01156 pref->order[0] = newindex; 01157 pref->framing[0] = 0; /* ? */ 01158 }
void ast_codec_pref_remove | ( | struct ast_codec_pref * | pref, | |
format_t | format | |||
) |
Remove audio a codec from a preference list.
Definition at line 1067 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().
01068 { 01069 struct ast_codec_pref oldorder; 01070 int x, y = 0; 01071 int slot; 01072 int size; 01073 01074 if (!pref->order[0]) 01075 return; 01076 01077 memcpy(&oldorder, pref, sizeof(oldorder)); 01078 memset(pref, 0, sizeof(*pref)); 01079 01080 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01081 slot = oldorder.order[x]; 01082 size = oldorder.framing[x]; 01083 if (! slot) 01084 break; 01085 if (AST_FORMAT_LIST[slot-1].bits != format) { 01086 pref->order[y] = slot; 01087 pref->framing[y++] = size; 01088 } 01089 } 01090 }
int ast_codec_pref_setsize | ( | struct ast_codec_pref * | pref, | |
format_t | format, | |||
int | framems | |||
) |
Set packet size for codec.
Definition at line 1161 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().
01162 { 01163 int x, idx = -1; 01164 01165 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01166 if (AST_FORMAT_LIST[x].bits == format) { 01167 idx = x; 01168 break; 01169 } 01170 } 01171 01172 if (idx < 0) 01173 return -1; 01174 01175 /* size validation */ 01176 if (!framems) 01177 framems = AST_FORMAT_LIST[idx].def_ms; 01178 01179 if (AST_FORMAT_LIST[idx].inc_ms && framems % AST_FORMAT_LIST[idx].inc_ms) /* avoid division by zero */ 01180 framems -= framems % AST_FORMAT_LIST[idx].inc_ms; 01181 01182 if (framems < AST_FORMAT_LIST[idx].min_ms) 01183 framems = AST_FORMAT_LIST[idx].min_ms; 01184 01185 if (framems > AST_FORMAT_LIST[idx].max_ms) 01186 framems = AST_FORMAT_LIST[idx].max_ms; 01187 01188 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01189 if (pref->order[x] == (idx + 1)) { 01190 pref->framing[x] = framems; 01191 break; 01192 } 01193 } 01194 01195 return x; 01196 }
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 1019 of file frame.c.
References ast_codec_pref_index(), and ast_getformatname().
Referenced by dump_prefs(), and socket_process().
01020 { 01021 int x; 01022 format_t codec; 01023 size_t total_len, slen; 01024 char *formatname; 01025 01026 memset(buf, 0, size); 01027 total_len = size; 01028 buf[0] = '('; 01029 total_len--; 01030 for (x = 0; x < sizeof(format_t) * 8; x++) { 01031 if (total_len <= 0) 01032 break; 01033 if (!(codec = ast_codec_pref_index(pref,x))) 01034 break; 01035 if ((formatname = ast_getformatname(codec))) { 01036 slen = strlen(formatname); 01037 if (slen > total_len) 01038 break; 01039 strncat(buf, formatname, total_len - 1); /* safe */ 01040 total_len -= slen; 01041 } 01042 if (total_len && x < sizeof(format_t) * 8 - 1 && ast_codec_pref_index(pref, x + 1)) { 01043 strncat(buf, "|", total_len - 1); /* safe */ 01044 total_len--; 01045 } 01046 } 01047 if (total_len) { 01048 strncat(buf, ")", total_len - 1); /* safe */ 01049 total_len--; 01050 } 01051 01052 return size - total_len; 01053 }
static const char* ast_expand_codec_alias | ( | const char * | in | ) | [static] |
Definition at line 630 of file frame.c.
References ARRAY_LEN.
Referenced by ast_getformatbyname().
00631 { 00632 int x; 00633 00634 for (x = 0; x < ARRAY_LEN(ast_codec_alias_table); x++) { 00635 if (!strcmp(in,ast_codec_alias_table[x].alias)) 00636 return ast_codec_alias_table[x].realname; 00637 } 00638 return in; 00639 }
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 1578 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().
01579 { 01580 int count; 01581 short *fdata = f->data.ptr; 01582 short adjust_value = abs(adjustment); 01583 01584 if ((f->frametype != AST_FRAME_VOICE) || (f->subclass.codec != AST_FORMAT_SLINEAR)) 01585 return -1; 01586 01587 if (!adjustment) 01588 return 0; 01589 01590 for (count = 0; count < f->samples; count++) { 01591 if (adjustment > 0) { 01592 ast_slinear_saturated_multiply(&fdata[count], &adjust_value); 01593 } else if (adjustment < 0) { 01594 ast_slinear_saturated_divide(&fdata[count], &adjust_value); 01595 } 01596 } 01597 01598 return 0; 01599 }
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 1623 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().
01624 { 01625 struct ast_frame *next; 01626 01627 for (next = AST_LIST_NEXT(frame, frame_list); 01628 frame; 01629 frame = next, next = frame ? AST_LIST_NEXT(frame, frame_list) : NULL) { 01630 memset(frame->data.ptr, 0, frame->datalen); 01631 } 01632 return 0; 01633 }
void ast_frame_dump | ( | const char * | name, | |
struct ast_frame * | f, | |||
char * | prefix | |||
) |
Dump a frame for debugging purposes
Definition at line 778 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().
00779 { 00780 const char noname[] = "unknown"; 00781 char ftype[40] = "Unknown Frametype"; 00782 char cft[80]; 00783 char subclass[40] = "Unknown Subclass"; 00784 char csub[80]; 00785 char moreinfo[40] = ""; 00786 char cn[60]; 00787 char cp[40]; 00788 char cmn[40]; 00789 const char *message = "Unknown"; 00790 00791 if (!name) 00792 name = noname; 00793 00794 00795 if (!f) { 00796 ast_verbose("%s [ %s (NULL) ] [%s]\n", 00797 term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)), 00798 term_color(cft, "HANGUP", COLOR_BRRED, COLOR_BLACK, sizeof(cft)), 00799 term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); 00800 return; 00801 } 00802 /* XXX We should probably print one each of voice and video when the format changes XXX */ 00803 if (f->frametype == AST_FRAME_VOICE) 00804 return; 00805 if (f->frametype == AST_FRAME_VIDEO) 00806 return; 00807 switch(f->frametype) { 00808 case AST_FRAME_DTMF_BEGIN: 00809 strcpy(ftype, "DTMF Begin"); 00810 subclass[0] = f->subclass.integer; 00811 subclass[1] = '\0'; 00812 break; 00813 case AST_FRAME_DTMF_END: 00814 strcpy(ftype, "DTMF End"); 00815 subclass[0] = f->subclass.integer; 00816 subclass[1] = '\0'; 00817 break; 00818 case AST_FRAME_CONTROL: 00819 strcpy(ftype, "Control"); 00820 switch (f->subclass.integer) { 00821 case AST_CONTROL_HANGUP: 00822 strcpy(subclass, "Hangup"); 00823 break; 00824 case AST_CONTROL_RING: 00825 strcpy(subclass, "Ring"); 00826 break; 00827 case AST_CONTROL_RINGING: 00828 strcpy(subclass, "Ringing"); 00829 break; 00830 case AST_CONTROL_ANSWER: 00831 strcpy(subclass, "Answer"); 00832 break; 00833 case AST_CONTROL_BUSY: 00834 strcpy(subclass, "Busy"); 00835 break; 00836 case AST_CONTROL_TAKEOFFHOOK: 00837 strcpy(subclass, "Take Off Hook"); 00838 break; 00839 case AST_CONTROL_OFFHOOK: 00840 strcpy(subclass, "Line Off Hook"); 00841 break; 00842 case AST_CONTROL_CONGESTION: 00843 strcpy(subclass, "Congestion"); 00844 break; 00845 case AST_CONTROL_FLASH: 00846 strcpy(subclass, "Flash"); 00847 break; 00848 case AST_CONTROL_WINK: 00849 strcpy(subclass, "Wink"); 00850 break; 00851 case AST_CONTROL_OPTION: 00852 strcpy(subclass, "Option"); 00853 break; 00854 case AST_CONTROL_RADIO_KEY: 00855 strcpy(subclass, "Key Radio"); 00856 break; 00857 case AST_CONTROL_RADIO_UNKEY: 00858 strcpy(subclass, "Unkey Radio"); 00859 break; 00860 case AST_CONTROL_HOLD: 00861 strcpy(subclass, "Hold"); 00862 break; 00863 case AST_CONTROL_UNHOLD: 00864 strcpy(subclass, "Unhold"); 00865 break; 00866 case AST_CONTROL_T38_PARAMETERS: 00867 if (f->datalen != sizeof(struct ast_control_t38_parameters)) { 00868 message = "Invalid"; 00869 } else { 00870 struct ast_control_t38_parameters *parameters = f->data.ptr; 00871 enum ast_control_t38 state = parameters->request_response; 00872 if (state == AST_T38_REQUEST_NEGOTIATE) 00873 message = "Negotiation Requested"; 00874 else if (state == AST_T38_REQUEST_TERMINATE) 00875 message = "Negotiation Request Terminated"; 00876 else if (state == AST_T38_NEGOTIATED) 00877 message = "Negotiated"; 00878 else if (state == AST_T38_TERMINATED) 00879 message = "Terminated"; 00880 else if (state == AST_T38_REFUSED) 00881 message = "Refused"; 00882 } 00883 snprintf(subclass, sizeof(subclass), "T38_Parameters/%s", message); 00884 break; 00885 case -1: 00886 strcpy(subclass, "Stop generators"); 00887 break; 00888 default: 00889 snprintf(subclass, sizeof(subclass), "Unknown control '%d'", f->subclass.integer); 00890 } 00891 break; 00892 case AST_FRAME_NULL: 00893 strcpy(ftype, "Null Frame"); 00894 strcpy(subclass, "N/A"); 00895 break; 00896 case AST_FRAME_IAX: 00897 /* Should never happen */ 00898 strcpy(ftype, "IAX Specific"); 00899 snprintf(subclass, sizeof(subclass), "IAX Frametype %d", f->subclass.integer); 00900 break; 00901 case AST_FRAME_TEXT: 00902 strcpy(ftype, "Text"); 00903 strcpy(subclass, "N/A"); 00904 ast_copy_string(moreinfo, f->data.ptr, sizeof(moreinfo)); 00905 break; 00906 case AST_FRAME_IMAGE: 00907 strcpy(ftype, "Image"); 00908 snprintf(subclass, sizeof(subclass), "Image format %s\n", ast_getformatname(f->subclass.codec)); 00909 break; 00910 case AST_FRAME_HTML: 00911 strcpy(ftype, "HTML"); 00912 switch (f->subclass.integer) { 00913 case AST_HTML_URL: 00914 strcpy(subclass, "URL"); 00915 ast_copy_string(moreinfo, f->data.ptr, sizeof(moreinfo)); 00916 break; 00917 case AST_HTML_DATA: 00918 strcpy(subclass, "Data"); 00919 break; 00920 case AST_HTML_BEGIN: 00921 strcpy(subclass, "Begin"); 00922 break; 00923 case AST_HTML_END: 00924 strcpy(subclass, "End"); 00925 break; 00926 case AST_HTML_LDCOMPLETE: 00927 strcpy(subclass, "Load Complete"); 00928 break; 00929 case AST_HTML_NOSUPPORT: 00930 strcpy(subclass, "No Support"); 00931 break; 00932 case AST_HTML_LINKURL: 00933 strcpy(subclass, "Link URL"); 00934 ast_copy_string(moreinfo, f->data.ptr, sizeof(moreinfo)); 00935 break; 00936 case AST_HTML_UNLINK: 00937 strcpy(subclass, "Unlink"); 00938 break; 00939 case AST_HTML_LINKREJECT: 00940 strcpy(subclass, "Link Reject"); 00941 break; 00942 default: 00943 snprintf(subclass, sizeof(subclass), "Unknown HTML frame '%d'\n", f->subclass.integer); 00944 break; 00945 } 00946 break; 00947 case AST_FRAME_MODEM: 00948 strcpy(ftype, "Modem"); 00949 switch (f->subclass.integer) { 00950 case AST_MODEM_T38: 00951 strcpy(subclass, "T.38"); 00952 break; 00953 case AST_MODEM_V150: 00954 strcpy(subclass, "V.150"); 00955 break; 00956 default: 00957 snprintf(subclass, sizeof(subclass), "Unknown MODEM frame '%d'\n", f->subclass.integer); 00958 break; 00959 } 00960 break; 00961 default: 00962 snprintf(ftype, sizeof(ftype), "Unknown Frametype '%d'", f->frametype); 00963 } 00964 if (!ast_strlen_zero(moreinfo)) 00965 ast_verbose("%s [ TYPE: %s (%d) SUBCLASS: %s (%d) '%s' ] [%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(cmn, moreinfo, COLOR_BRGREEN, COLOR_BLACK, sizeof(cmn)), 00972 term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); 00973 else 00974 ast_verbose("%s [ TYPE: %s (%d) SUBCLASS: %s (%d) ] [%s]\n", 00975 term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)), 00976 term_color(cft, ftype, COLOR_BRRED, COLOR_BLACK, sizeof(cft)), 00977 f->frametype, 00978 term_color(csub, subclass, COLOR_BRCYAN, COLOR_BLACK, sizeof(csub)), 00979 f->subclass.integer, 00980 term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); 00981 }
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 375 of file frame.c.
References __frame_free(), AST_LIST_NEXT, and ast_frame::next.
Referenced by mixmonitor_thread().
00376 { 00377 struct ast_frame *next; 00378 00379 for (next = AST_LIST_NEXT(frame, frame_list); 00380 frame; 00381 frame = next, next = frame ? AST_LIST_NEXT(frame, frame_list) : NULL) { 00382 __frame_free(frame, cache); 00383 } 00384 }
static struct ast_frame* ast_frame_header_new | ( | void | ) | [static] |
Definition at line 299 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().
00300 { 00301 struct ast_frame *f; 00302 00303 #if !defined(LOW_MEMORY) 00304 struct ast_frame_cache *frames; 00305 00306 if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) { 00307 if ((f = AST_LIST_REMOVE_HEAD(&frames->list, frame_list))) { 00308 size_t mallocd_len = f->mallocd_hdr_len; 00309 memset(f, 0, sizeof(*f)); 00310 f->mallocd_hdr_len = mallocd_len; 00311 f->mallocd = AST_MALLOCD_HDR; 00312 frames->size--; 00313 return f; 00314 } 00315 } 00316 if (!(f = ast_calloc_cache(1, sizeof(*f)))) 00317 return NULL; 00318 #else 00319 if (!(f = ast_calloc(1, sizeof(*f)))) 00320 return NULL; 00321 #endif 00322 00323 f->mallocd_hdr_len = sizeof(*f); 00324 00325 return f; 00326 }
Sums two frames of audio samples.
f1 | The first frame (which will contain the result) | |
f2 | The second frame |
Definition at line 1601 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.
01602 { 01603 int count; 01604 short *data1, *data2; 01605 01606 if ((f1->frametype != AST_FRAME_VOICE) || (f1->subclass.codec != AST_FORMAT_SLINEAR)) 01607 return -1; 01608 01609 if ((f2->frametype != AST_FRAME_VOICE) || (f2->subclass.codec != AST_FORMAT_SLINEAR)) 01610 return -1; 01611 01612 if (f1->samples != f2->samples) 01613 return -1; 01614 01615 for (count = 0, data1 = f1->data.ptr, data2 = f2->data.ptr; 01616 count < f1->samples; 01617 count++, data1++, data2++) 01618 ast_slinear_saturated_add(data1, data2); 01619 01620 return 0; 01621 }
Copies a frame.
fr | frame to copy Duplicates a frame -- should only rarely be used, typically frisolate is good enough |
Definition at line 474 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(), and recordthread().
00475 { 00476 struct ast_frame *out = NULL; 00477 int len, srclen = 0; 00478 void *buf = NULL; 00479 00480 #if !defined(LOW_MEMORY) 00481 struct ast_frame_cache *frames; 00482 #endif 00483 00484 /* Start with standard stuff */ 00485 len = sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen; 00486 /* If we have a source, add space for it */ 00487 /* 00488 * XXX Watch out here - if we receive a src which is not terminated 00489 * properly, we can be easily attacked. Should limit the size we deal with. 00490 */ 00491 if (f->src) 00492 srclen = strlen(f->src); 00493 if (srclen > 0) 00494 len += srclen + 1; 00495 00496 #if !defined(LOW_MEMORY) 00497 if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) { 00498 AST_LIST_TRAVERSE_SAFE_BEGIN(&frames->list, out, frame_list) { 00499 if (out->mallocd_hdr_len >= len) { 00500 size_t mallocd_len = out->mallocd_hdr_len; 00501 00502 AST_LIST_REMOVE_CURRENT(frame_list); 00503 memset(out, 0, sizeof(*out)); 00504 out->mallocd_hdr_len = mallocd_len; 00505 buf = out; 00506 frames->size--; 00507 break; 00508 } 00509 } 00510 AST_LIST_TRAVERSE_SAFE_END; 00511 } 00512 #endif 00513 00514 if (!buf) { 00515 if (!(buf = ast_calloc_cache(1, len))) 00516 return NULL; 00517 out = buf; 00518 out->mallocd_hdr_len = len; 00519 } 00520 00521 out->frametype = f->frametype; 00522 out->subclass.codec = f->subclass.codec; 00523 out->datalen = f->datalen; 00524 out->samples = f->samples; 00525 out->delivery = f->delivery; 00526 /* Even though this new frame was allocated from the heap, we can't mark it 00527 * with AST_MALLOCD_HDR, AST_MALLOCD_DATA and AST_MALLOCD_SRC, because that 00528 * would cause ast_frfree() to attempt to individually free each of those 00529 * under the assumption that they were separately allocated. Since this frame 00530 * was allocated in a single allocation, we'll only mark it as if the header 00531 * was heap-allocated; this will result in the entire frame being properly freed. 00532 */ 00533 out->mallocd = AST_MALLOCD_HDR; 00534 out->offset = AST_FRIENDLY_OFFSET; 00535 if (out->datalen) { 00536 out->data.ptr = buf + sizeof(*out) + AST_FRIENDLY_OFFSET; 00537 memcpy(out->data.ptr, f->data.ptr, out->datalen); 00538 } else { 00539 out->data.uint32 = f->data.uint32; 00540 } 00541 if (srclen > 0) { 00542 /* This may seem a little strange, but it's to avoid a gcc (4.2.4) compiler warning */ 00543 char *src; 00544 out->src = buf + sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen; 00545 src = (char *) out->src; 00546 /* Must have space since we allocated for it */ 00547 strcpy(src, f->src); 00548 } 00549 ast_copy_flags(out, f, AST_FRFLAG_HAS_TIMING_INFO); 00550 out->ts = f->ts; 00551 out->len = f->len; 00552 out->seqno = f->seqno; 00553 return out; 00554 }
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 391 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().
00392 { 00393 struct ast_frame *out; 00394 void *newdata; 00395 00396 /* if none of the existing frame is malloc'd, let ast_frdup() do it 00397 since it is more efficient 00398 */ 00399 if (fr->mallocd == 0) { 00400 return ast_frdup(fr); 00401 } 00402 00403 /* if everything is already malloc'd, we are done */ 00404 if ((fr->mallocd & (AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA)) == 00405 (AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA)) { 00406 return fr; 00407 } 00408 00409 if (!(fr->mallocd & AST_MALLOCD_HDR)) { 00410 /* Allocate a new header if needed */ 00411 if (!(out = ast_frame_header_new())) { 00412 return NULL; 00413 } 00414 out->frametype = fr->frametype; 00415 out->subclass.codec = fr->subclass.codec; 00416 out->datalen = fr->datalen; 00417 out->samples = fr->samples; 00418 out->offset = fr->offset; 00419 /* Copy the timing data */ 00420 ast_copy_flags(out, fr, AST_FRFLAG_HAS_TIMING_INFO); 00421 if (ast_test_flag(fr, AST_FRFLAG_HAS_TIMING_INFO)) { 00422 out->ts = fr->ts; 00423 out->len = fr->len; 00424 out->seqno = fr->seqno; 00425 } 00426 } else { 00427 out = fr; 00428 } 00429 00430 if (!(fr->mallocd & AST_MALLOCD_SRC) && fr->src) { 00431 if (!(out->src = ast_strdup(fr->src))) { 00432 if (out != fr) { 00433 ast_free(out); 00434 } 00435 return NULL; 00436 } 00437 } else { 00438 out->src = fr->src; 00439 fr->src = NULL; 00440 fr->mallocd &= ~AST_MALLOCD_SRC; 00441 } 00442 00443 if (!(fr->mallocd & AST_MALLOCD_DATA)) { 00444 if (!fr->datalen) { 00445 out->data.uint32 = fr->data.uint32; 00446 out->mallocd = AST_MALLOCD_HDR | AST_MALLOCD_SRC; 00447 return out; 00448 } 00449 if (!(newdata = ast_malloc(fr->datalen + AST_FRIENDLY_OFFSET))) { 00450 if (out->src != fr->src) { 00451 ast_free((void *) out->src); 00452 } 00453 if (out != fr) { 00454 ast_free(out); 00455 } 00456 return NULL; 00457 } 00458 newdata += AST_FRIENDLY_OFFSET; 00459 out->offset = AST_FRIENDLY_OFFSET; 00460 out->datalen = fr->datalen; 00461 memcpy(newdata, fr->data.ptr, fr->datalen); 00462 out->data.ptr = newdata; 00463 } else { 00464 out->data = fr->data; 00465 memset(&fr->data, 0, sizeof(fr->data)); 00466 fr->mallocd &= ~AST_MALLOCD_DATA; 00467 } 00468 00469 out->mallocd = AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA; 00470 00471 return out; 00472 }
struct ast_format_list* ast_get_format_list | ( | size_t * | size | ) |
Definition at line 572 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().
00573 { 00574 *size = ARRAY_LEN(AST_FORMAT_LIST); 00575 return AST_FORMAT_LIST; 00576 }
struct ast_format_list* ast_get_format_list_index | ( | int | idx | ) |
Definition at line 567 of file frame.c.
References AST_FORMAT_LIST.
00568 { 00569 return &AST_FORMAT_LIST[idx]; 00570 }
format_t ast_getformatbyname | ( | const char * | name | ) |
Gets a format from a name.
name | string of format |
Definition at line 641 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().
00642 { 00643 int x, all; 00644 format_t format = 0; 00645 00646 all = strcasecmp(name, "all") ? 0 : 1; 00647 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 00648 if (all || 00649 !strcasecmp(AST_FORMAT_LIST[x].name,name) || 00650 !strcasecmp(AST_FORMAT_LIST[x].name, ast_expand_codec_alias(name))) { 00651 format |= AST_FORMAT_LIST[x].bits; 00652 if (!all) 00653 break; 00654 } 00655 } 00656 00657 return format; 00658 }
char* ast_getformatname | ( | format_t | format | ) |
Get the name of a format.
format | id of format |
Definition at line 578 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_getsize(), 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_write(), 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().
00579 { 00580 int x; 00581 char *ret = "unknown"; 00582 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 00583 if (AST_FORMAT_LIST[x].bits == format) { 00584 ret = AST_FORMAT_LIST[x].name; 00585 break; 00586 } 00587 } 00588 return ret; 00589 }
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 591 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_codec_get_samples(), ast_request(), ast_streamfile(), ast_write(), bridge_make_compatible(), console_request(), 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(), socket_process(), start_rtp(), unistim_new(), unistim_request(), and unistim_write().
00592 { 00593 int x; 00594 unsigned len; 00595 char *start, *end = buf; 00596 00597 if (!size) 00598 return buf; 00599 snprintf(end, size, "0x%llx (", (unsigned long long) format); 00600 len = strlen(end); 00601 end += len; 00602 size -= len; 00603 start = end; 00604 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 00605 if (AST_FORMAT_LIST[x].bits & format) { 00606 snprintf(end, size, "%s|", AST_FORMAT_LIST[x].name); 00607 len = strlen(end); 00608 end += len; 00609 size -= len; 00610 } 00611 } 00612 if (start == end) 00613 ast_copy_string(start, "nothing)", size); 00614 else if (size > 1) 00615 *(end - 1) = ')'; 00616 return buf; 00617 }
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 1266 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().
01267 { 01268 int errors = 0, framems = 0; 01269 char *parse = NULL, *this = NULL, *psize = NULL; 01270 format_t format = 0; 01271 01272 parse = ast_strdupa(list); 01273 while ((this = strsep(&parse, ","))) { 01274 framems = 0; 01275 if ((psize = strrchr(this, ':'))) { 01276 *psize++ = '\0'; 01277 ast_debug(1, "Packetization for codec: %s is %s\n", this, psize); 01278 framems = atoi(psize); 01279 if (framems < 0) { 01280 framems = 0; 01281 errors++; 01282 ast_log(LOG_WARNING, "Bad packetization value for codec %s\n", this); 01283 } 01284 } 01285 if (!(format = ast_getformatbyname(this))) { 01286 ast_log(LOG_WARNING, "Cannot %s unknown format '%s'\n", allowing ? "allow" : "disallow", this); 01287 errors++; 01288 continue; 01289 } 01290 01291 if (mask) { 01292 if (allowing) 01293 *mask |= format; 01294 else 01295 *mask &= ~format; 01296 } 01297 01298 /* Set up a preference list for audio. Do not include video in preferences 01299 since we can not transcode video and have to use whatever is offered 01300 */ 01301 if (pref && (format & AST_FORMAT_AUDIO_MASK)) { 01302 if (strcasecmp(this, "all")) { 01303 if (allowing) { 01304 ast_codec_pref_append(pref, format); 01305 ast_codec_pref_setsize(pref, format, framems); 01306 } 01307 else 01308 ast_codec_pref_remove(pref, format); 01309 } else if (!allowing) { 01310 memset(pref, 0, sizeof(*pref)); 01311 } 01312 } 01313 } 01314 return errors; 01315 }
void ast_smoother_free | ( | struct ast_smoother * | s | ) |
Definition at line 294 of file frame.c.
References ast_free.
Referenced by ast_rtp_destroy(), ast_rtp_write(), destroy_session(), and generic_fax_exec().
00295 { 00296 ast_free(s); 00297 }
int ast_smoother_get_flags | ( | struct ast_smoother * | s | ) |
Definition at line 193 of file frame.c.
References ast_smoother::flags.
00194 { 00195 return s->flags; 00196 }
struct ast_smoother* ast_smoother_new | ( | int | size | ) |
Definition at line 183 of file frame.c.
References ast_malloc, and ast_smoother_reset().
Referenced by ast_rtp_write(), and generic_fax_exec().
00184 { 00185 struct ast_smoother *s; 00186 if (size < 1) 00187 return NULL; 00188 if ((s = ast_malloc(sizeof(*s)))) 00189 ast_smoother_reset(s, size); 00190 return s; 00191 }
struct ast_frame* ast_smoother_read | ( | struct ast_smoother * | s | ) |
Definition at line 244 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().
00245 { 00246 struct ast_frame *opt; 00247 int len; 00248 00249 /* IF we have an optimization frame, send it */ 00250 if (s->opt) { 00251 if (s->opt->offset < AST_FRIENDLY_OFFSET) 00252 ast_log(LOG_WARNING, "Returning a frame of inappropriate offset (%d).\n", 00253 s->opt->offset); 00254 opt = s->opt; 00255 s->opt = NULL; 00256 return opt; 00257 } 00258 00259 /* Make sure we have enough data */ 00260 if (s->len < s->size) { 00261 /* Or, if this is a G.729 frame with VAD on it, send it immediately anyway */ 00262 if (!((s->flags & AST_SMOOTHER_FLAG_G729) && (s->len % 10))) 00263 return NULL; 00264 } 00265 len = s->size; 00266 if (len > s->len) 00267 len = s->len; 00268 /* Make frame */ 00269 s->f.frametype = AST_FRAME_VOICE; 00270 s->f.subclass.codec = s->format; 00271 s->f.data.ptr = s->framedata + AST_FRIENDLY_OFFSET; 00272 s->f.offset = AST_FRIENDLY_OFFSET; 00273 s->f.datalen = len; 00274 /* Samples will be improper given VAD, but with VAD the concept really doesn't even exist */ 00275 s->f.samples = len * s->samplesperbyte; /* XXX rounding */ 00276 s->f.delivery = s->delivery; 00277 /* Fill Data */ 00278 memcpy(s->f.data.ptr, s->data, len); 00279 s->len -= len; 00280 /* Move remaining data to the front if applicable */ 00281 if (s->len) { 00282 /* In principle this should all be fine because if we are sending 00283 G.729 VAD, the next timestamp will take over anyawy */ 00284 memmove(s->data, s->data + len, s->len); 00285 if (!ast_tvzero(s->delivery)) { 00286 /* If we have delivery time, increment it, otherwise, leave it at 0 */ 00287 s->delivery = ast_tvadd(s->delivery, ast_samp2tv(s->f.samples, ast_format_rate(s->format))); 00288 } 00289 } 00290 /* Return frame */ 00291 return &s->f; 00292 }
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 161 of file frame.c.
References ast_smoother::opt, ast_smoother::opt_needs_swap, ast_smoother::size, and smoother_frame_feed().
00162 { 00163 /* if there is no change, then nothing to do */ 00164 if (s->size == bytes) { 00165 return; 00166 } 00167 /* set the new desired output size */ 00168 s->size = bytes; 00169 /* if there is no 'optimized' frame in the smoother, 00170 * then there is nothing left to do 00171 */ 00172 if (!s->opt) { 00173 return; 00174 } 00175 /* there is an 'optimized' frame here at the old size, 00176 * but it must now be put into the buffer so the data 00177 * can be extracted at the new size 00178 */ 00179 smoother_frame_feed(s, s->opt, s->opt_needs_swap); 00180 s->opt = NULL; 00181 }
void ast_smoother_reset | ( | struct ast_smoother * | s, | |
int | bytes | |||
) |
void ast_smoother_set_flags | ( | struct ast_smoother * | s, | |
int | flags | |||
) |
Definition at line 198 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 203 of file frame.c.
References ast_smoother::flags.
Referenced by ast_rtp_write().
00204 { 00205 return (s->flags & flag); 00206 }
void ast_swapcopy_samples | ( | void * | dst, | |
const void * | src, | |||
int | samples | |||
) |
Definition at line 556 of file frame.c.
Referenced by __ast_smoother_feed(), iax_frame_wrap(), phone_write_buf(), and smoother_frame_feed().
00557 { 00558 int i; 00559 unsigned short *dst_s = dst; 00560 const unsigned short *src_s = src; 00561 00562 for (i = 0; i < samples; i++) 00563 dst_s[i] = (src_s[i]<<8) | (src_s[i]>>8); 00564 }
static void frame_cache_cleanup | ( | void * | data | ) | [static] |
Definition at line 329 of file frame.c.
References ast_free, AST_LIST_REMOVE_HEAD, f, and frames.
00330 { 00331 struct ast_frame_cache *frames = data; 00332 struct ast_frame *f; 00333 00334 while ((f = AST_LIST_REMOVE_HEAD(&frames->list, frame_list))) 00335 ast_free(f); 00336 00337 ast_free(frames); 00338 }
static int g723_len | ( | unsigned char | buf | ) | [static] |
Definition at line 1317 of file frame.c.
References ast_log(), LOG_WARNING, type, TYPE_HIGH, TYPE_LOW, TYPE_MASK, and TYPE_SILENCE.
Referenced by g723_samples().
01318 { 01319 enum frame_type type = buf & TYPE_MASK; 01320 01321 switch(type) { 01322 case TYPE_DONTSEND: 01323 return 0; 01324 break; 01325 case TYPE_SILENCE: 01326 return 4; 01327 break; 01328 case TYPE_HIGH: 01329 return 24; 01330 break; 01331 case TYPE_LOW: 01332 return 20; 01333 break; 01334 default: 01335 ast_log(LOG_WARNING, "Badly encoded frame (%d)\n", type); 01336 } 01337 return -1; 01338 }
static int g723_samples | ( | unsigned char * | buf, | |
int | maxlen | |||
) | [static] |
Definition at line 1340 of file frame.c.
References g723_len().
Referenced by ast_codec_get_samples().
01341 { 01342 int pos = 0; 01343 int samples = 0; 01344 int res; 01345 while(pos < maxlen) { 01346 res = g723_len(buf[pos]); 01347 if (res <= 0) 01348 break; 01349 samples += 240; 01350 pos += res; 01351 } 01352 return samples; 01353 }
static unsigned char get_n_bits_at | ( | unsigned char * | data, | |
int | n, | |||
int | bit | |||
) | [static] |
Definition at line 1355 of file frame.c.
Referenced by speex_get_wb_sz_at(), and speex_samples().
01356 { 01357 int byte = bit / 8; /* byte containing first bit */ 01358 int rem = 8 - (bit % 8); /* remaining bits in first byte */ 01359 unsigned char ret = 0; 01360 01361 if (n <= 0 || n > 8) 01362 return 0; 01363 01364 if (rem < n) { 01365 ret = (data[byte] << (n - rem)); 01366 ret |= (data[byte + 1] >> (8 - n + rem)); 01367 } else { 01368 ret = (data[byte] >> (rem - n)); 01369 } 01370 01371 return (ret & (0xff >> (8 - n))); 01372 }
int init_framer | ( | void | ) |
Provided by frame.c
Definition at line 990 of file frame.c.
References ARRAY_LEN, ast_cli_register_multiple(), and my_clis.
Referenced by main().
00991 { 00992 ast_cli_register_multiple(my_clis, ARRAY_LEN(my_clis)); 00993 return 0; 00994 }
static char* show_codec_n | ( | struct ast_cli_entry * | e, | |
int | cmd, | |||
struct ast_cli_args * | a | |||
) | [static] |
Definition at line 740 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.
00741 { 00742 format_t codec; 00743 int i, found = 0; 00744 long long type_punned_codec; 00745 00746 switch (cmd) { 00747 case CLI_INIT: 00748 e->command = "core show codec"; 00749 e->usage = 00750 "Usage: core show codec <number>\n" 00751 " Displays codec mapping\n"; 00752 return NULL; 00753 case CLI_GENERATE: 00754 return NULL; 00755 } 00756 00757 if (a->argc != 4) 00758 return CLI_SHOWUSAGE; 00759 00760 if (sscanf(a->argv[3], "%30lld", &type_punned_codec) != 1) { 00761 return CLI_SHOWUSAGE; 00762 } 00763 codec = type_punned_codec; 00764 00765 for (i = 0; i < 63; i++) 00766 if (codec & (1LL << i)) { 00767 found = 1; 00768 ast_cli(a->fd, "%11llu (1 << %2d) %s\n", 1LL << i, i, ast_codec2str(1LL << i)); 00769 } 00770 00771 if (!found) 00772 ast_cli(a->fd, "Codec %lld not found\n", (long long) codec); 00773 00774 return CLI_SUCCESS; 00775 }
static char* show_codecs | ( | struct ast_cli_entry * | e, | |
int | cmd, | |||
struct ast_cli_args * | a | |||
) | [static] |
Definition at line 673 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.
00674 { 00675 int i, found=0; 00676 char hex[25]; 00677 00678 switch (cmd) { 00679 case CLI_INIT: 00680 e->command = "core show codecs [audio|video|image|text]"; 00681 e->usage = 00682 "Usage: core show codecs [audio|video|image|text]\n" 00683 " Displays codec mapping\n"; 00684 return NULL; 00685 case CLI_GENERATE: 00686 return NULL; 00687 } 00688 00689 if ((a->argc < 3) || (a->argc > 4)) 00690 return CLI_SHOWUSAGE; 00691 00692 if (!ast_opt_dont_warn) 00693 ast_cli(a->fd, "Disclaimer: this command is for informational purposes only.\n" 00694 "\tIt does not indicate anything about your configuration.\n"); 00695 00696 ast_cli(a->fd, "%19s %9s %20s TYPE %8s %s\n","INT","BINARY","HEX","NAME","DESCRIPTION"); 00697 ast_cli(a->fd, "-----------------------------------------------------------------------------------\n"); 00698 for (i = 0; i < 63; i++) { 00699 00700 if (a->argc == 4) { 00701 if (!strcasecmp(a->argv[3], "audio")) { 00702 if (!((1LL << i) & AST_FORMAT_AUDIO_MASK)) { 00703 continue; 00704 } 00705 } else if (!strcasecmp(a->argv[3], "video")) { 00706 if (!((1LL << i) & AST_FORMAT_VIDEO_MASK)) { 00707 continue; 00708 } 00709 } else if (!strcasecmp(a->argv[3], "image")) { 00710 if (i != 16 && i != 17) { 00711 continue; 00712 } 00713 } else if (!strcasecmp(a->argv[3], "text")) { 00714 if (!((1LL << i) & AST_FORMAT_TEXT_MASK)) { 00715 continue; 00716 } 00717 } else { 00718 continue; 00719 } 00720 } 00721 00722 snprintf(hex, sizeof(hex), "(0x%llx)", 1LL << i); 00723 ast_cli(a->fd, "%19llu (1 << %2d) %20s %5s %8s (%s)\n", 1LL << i, i, hex, 00724 ((1LL << i) & AST_FORMAT_AUDIO_MASK) ? "audio" : 00725 i == 16 || i == 17 ? "image" : 00726 ((1LL << i) & AST_FORMAT_VIDEO_MASK) ? "video" : 00727 ((1LL << i) & AST_FORMAT_TEXT_MASK) ? "text" : 00728 "(unk)", 00729 ast_getformatname(1LL << i), ast_codec2str(1LL << i)); 00730 found = 1; 00731 } 00732 00733 if (!found) { 00734 return CLI_SHOWUSAGE; 00735 } else { 00736 return CLI_SUCCESS; 00737 } 00738 }
static int smoother_frame_feed | ( | struct ast_smoother * | s, | |
struct ast_frame * | f, | |||
int | swap | |||
) | [static] |
Definition at line 133 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().
00134 { 00135 if (s->flags & AST_SMOOTHER_FLAG_G729) { 00136 if (s->len % 10) { 00137 ast_log(LOG_NOTICE, "Dropping extra frame of G.729 since we already have a VAD frame at the end\n"); 00138 return 0; 00139 } 00140 } 00141 if (swap) { 00142 ast_swapcopy_samples(s->data + s->len, f->data.ptr, f->samples); 00143 } else { 00144 memcpy(s->data + s->len, f->data.ptr, f->datalen); 00145 } 00146 /* If either side is empty, reset the delivery time */ 00147 if (!s->len || ast_tvzero(f->delivery) || ast_tvzero(s->delivery)) { /* XXX really ? */ 00148 s->delivery = f->delivery; 00149 } 00150 s->len += f->datalen; 00151 00152 return 0; 00153 }
static int speex_get_wb_sz_at | ( | unsigned char * | data, | |
int | len, | |||
int | bit | |||
) | [static] |
Definition at line 1374 of file frame.c.
References ast_log(), get_n_bits_at(), and LOG_WARNING.
Referenced by speex_samples().
01375 { 01376 static const int SpeexWBSubModeSz[] = { 01377 4, 36, 112, 192, 01378 352, 0, 0, 0 }; 01379 int off = bit; 01380 unsigned char c; 01381 01382 /* skip up to two wideband frames */ 01383 if (((len * 8 - off) >= 5) && 01384 get_n_bits_at(data, 1, off)) { 01385 c = get_n_bits_at(data, 3, off + 1); 01386 off += SpeexWBSubModeSz[c]; 01387 01388 if (((len * 8 - off) >= 5) && 01389 get_n_bits_at(data, 1, off)) { 01390 c = get_n_bits_at(data, 3, off + 1); 01391 off += SpeexWBSubModeSz[c]; 01392 01393 if (((len * 8 - off) >= 5) && 01394 get_n_bits_at(data, 1, off)) { 01395 ast_log(LOG_WARNING, "Encountered corrupt speex frame; too many wideband frames in a row.\n"); 01396 return -1; 01397 } 01398 } 01399 01400 } 01401 return off - bit; 01402 }
static int speex_samples | ( | unsigned char * | data, | |
int | len | |||
) | [static] |
Definition at line 1404 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().
01405 { 01406 static const int SpeexSubModeSz[] = { 01407 5, 43, 119, 160, 01408 220, 300, 364, 492, 01409 79, 0, 0, 0, 01410 0, 0, 0, 0 }; 01411 static const int SpeexInBandSz[] = { 01412 1, 1, 4, 4, 01413 4, 4, 4, 4, 01414 8, 8, 16, 16, 01415 32, 32, 64, 64 }; 01416 int bit = 0; 01417 int cnt = 0; 01418 int off; 01419 unsigned char c; 01420 01421 while ((len * 8 - bit) >= 5) { 01422 /* skip wideband frames */ 01423 off = speex_get_wb_sz_at(data, len, bit); 01424 if (off < 0) { 01425 ast_log(LOG_WARNING, "Had error while reading wideband frames for speex samples\n"); 01426 break; 01427 } 01428 bit += off; 01429 01430 if ((len * 8 - bit) < 5) 01431 break; 01432 01433 /* get control bits */ 01434 c = get_n_bits_at(data, 5, bit); 01435 bit += 5; 01436 01437 if (c == 15) { 01438 /* terminator */ 01439 break; 01440 } else if (c == 14) { 01441 /* in-band signal; next 4 bits contain signal id */ 01442 c = get_n_bits_at(data, 4, bit); 01443 bit += 4; 01444 bit += SpeexInBandSz[c]; 01445 } else if (c == 13) { 01446 /* user in-band; next 4 bits contain msg len */ 01447 c = get_n_bits_at(data, 4, bit); 01448 bit += 4; 01449 /* after which it's 5-bit signal id + c bytes of data */ 01450 bit += 5 + c * 8; 01451 } else if (c > 8) { 01452 /* unknown */ 01453 ast_log(LOG_WARNING, "Unknown speex control frame %d\n", c); 01454 break; 01455 } else { 01456 /* skip number bits for submode (less the 5 control bits) */ 01457 bit += SpeexSubModeSz[c] - 5; 01458 cnt += 160; /* new frame */ 01459 } 01460 } 01461 return cnt; 01462 }
struct ast_format_list AST_FORMAT_LIST[] [static] |
Definition of supported media formats (codecs).
Definition at line 100 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 131 of file frame.c.
Referenced by __analog_handle_event(), __ast_channel_masquerade(), __ast_read(), __oh323_rtp_create(), __oh323_update_info(), agent_read(), agent_request(), 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_handle_event(), 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(), sig_pri_handle_subcmds(), 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 985 of file frame.c.
Referenced by init_framer().