Wed Jan 8 2020 09:50:12

Asterisk developer's documentation


frame.c File Reference

Frame and codec manipulation routines. More...

#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
 

Macros

#define FRAME_CACHE_MAX_SIZE   10
 Maximum ast_frame cache size. More...
 
#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. More...
 
char * ast_codec2str (format_t codec)
 Get a name from a format Gets a name from a format. More...
 
format_t ast_codec_choose (struct ast_codec_pref *pref, format_t formats, int find_best)
 Pick a codec. More...
 
int ast_codec_get_len (format_t format, int samples)
 Returns the number of bytes for the number of samples of the given format. More...
 
int ast_codec_get_samples (struct ast_frame *f)
 Returns the number of samples contained in the frame. More...
 
int ast_codec_pref_append (struct ast_codec_pref *pref, format_t format)
 Append codec to list. More...
 
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. More...
 
struct ast_format_list ast_codec_pref_getsize (struct ast_codec_pref *pref, format_t format)
 Get packet size for codec. More...
 
format_t ast_codec_pref_index (struct ast_codec_pref *pref, int idx)
 Codec located at a particular place in the preference index. More...
 
void ast_codec_pref_prepend (struct ast_codec_pref *pref, format_t format, int only_if_existing)
 Prepend codec to list. More...
 
void ast_codec_pref_remove (struct ast_codec_pref *pref, format_t format)
 Remove codec from pref list. More...
 
int ast_codec_pref_setsize (struct ast_codec_pref *pref, format_t format, int framems)
 Set packet size for codec. More...
 
int ast_codec_pref_string (struct ast_codec_pref *pref, char *buf, size_t size)
 Dump audio codec preference list into a string. More...
 
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. More...
 
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. More...
 
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. More...
 
static struct ast_frameast_frame_header_new (void)
 
int ast_frame_slinear_sum (struct ast_frame *f1, struct ast_frame *f2)
 Sums two frames of audio samples. More...
 
struct ast_frameast_frdup (const struct ast_frame *f)
 Copies a frame. More...
 
struct ast_frameast_frisolate (struct ast_frame *fr)
 'isolates' a frame by duplicating non-malloc'ed components (header, src, data). On return all components are malloc'ed More...
 
struct ast_format_listast_get_format_list (size_t *size)
 
struct ast_format_listast_get_format_list_index (int idx)
 
format_t ast_getformatbyname (const char *name)
 Gets a format from a name. More...
 
char * ast_getformatname (format_t format)
 Get the name of a format. More...
 
char * ast_getformatname_multiple (char *buf, size_t size, format_t format)
 Get the names of a set of formats. More...
 
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. More...
 
void ast_smoother_free (struct ast_smoother *s)
 
int ast_smoother_get_flags (struct ast_smoother *s)
 
struct ast_smootherast_smoother_new (int size)
 
struct ast_frameast_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. More...
 
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 void framer_shutdown (void)
 
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_codec_alias_table ast_codec_alias_table []
 
static struct ast_format_list AST_FORMAT_LIST []
 Definition of supported media formats (codecs) More...
 
struct 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 []
 

Detailed Description

Frame and codec manipulation routines.

Author
Mark Spencer marks.nosp@m.ter@.nosp@m.digiu.nosp@m.m.co.nosp@m.m

Definition in file frame.c.

Macro Definition Documentation

#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.

Definition at line 62 of file frame.c.

Referenced by __frame_free().

#define SMOOTHER_SIZE   8000

Definition at line 74 of file frame.c.

Referenced by __ast_smoother_feed().

#define TYPE_MASK   0x3

Definition at line 83 of file frame.c.

Referenced by g723_len().

Enumeration Type Documentation

enum frame_type
Enumerator
TYPE_HIGH 
TYPE_LOW 
TYPE_SILENCE 
TYPE_DONTSEND 

Definition at line 76 of file frame.c.

76  {
77  TYPE_HIGH, /* 0x0 */
78  TYPE_LOW, /* 0x1 */
79  TYPE_SILENCE, /* 0x2 */
80  TYPE_DONTSEND /* 0x3 */
81 };
Definition: frame.c:78

Function Documentation

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(), ast_frame_subclass::codec, ast_frame::data, ast_frame::datalen, f, ast_smoother::flags, ast_smoother::format, ast_frame::frametype, ast_smoother::len, LOG_WARNING, ast_frame::offset, ast_smoother::opt, ast_smoother::opt_needs_swap, ast_frame::ptr, ast_frame::samples, ast_smoother::samplesperbyte, ast_smoother::size, smoother_frame_feed(), SMOOTHER_SIZE, and ast_frame::subclass.

209 {
210  if (f->frametype != AST_FRAME_VOICE) {
211  ast_log(LOG_WARNING, "Huh? Can't smooth a non-voice frame!\n");
212  return -1;
213  }
214  if (!s->format) {
215  s->format = f->subclass.codec;
216  s->samplesperbyte = (float)f->samples / (float)f->datalen;
217  } else if (s->format != f->subclass.codec) {
218  ast_log(LOG_WARNING, "Smoother was working on %s format frames, now trying to feed %s?\n",
220  return -1;
221  }
222  if (s->len + f->datalen > SMOOTHER_SIZE) {
223  ast_log(LOG_WARNING, "Out of smoother space\n");
224  return -1;
225  }
226  if (((f->datalen == s->size) ||
227  ((f->datalen < 10) && (s->flags & AST_SMOOTHER_FLAG_G729))) &&
228  !s->opt &&
229  !s->len &&
230  (f->offset >= AST_MIN_OFFSET)) {
231  /* Optimize by sending the frame we just got
232  on the next read, thus eliminating the douple
233  copy */
234  if (swap)
236  s->opt = f;
237  s->opt_needs_swap = swap ? 1 : 0;
238  return 0;
239  }
240 
241  return smoother_frame_feed(s, f, swap);
242 }
format_t format
Definition: frame.c:87
union ast_frame_subclass subclass
Definition: frame.h:146
#define SMOOTHER_SIZE
Definition: frame.c:74
int offset
Definition: frame.h:156
void * ptr
Definition: frame.h:160
#define LOG_WARNING
Definition: logger.h:144
format_t codec
Definition: frame.h:137
int datalen
Definition: frame.h:148
static int smoother_frame_feed(struct ast_smoother *s, struct ast_frame *f, int swap)
Definition: frame.c:133
int size
Definition: frame.c:86
char * ast_getformatname(format_t format)
Get the name of a format.
Definition: frame.c:578
float samplesperbyte
Definition: frame.c:89
int len
Definition: frame.c:96
#define AST_SMOOTHER_FLAG_G729
Definition: frame.h:427
void ast_log(int level, const char *file, int line, const char *function, const char *fmt,...)
Used for sending a log message This is the standard logger function. Probably the only way you will i...
Definition: logger.c:1207
struct ast_frame * opt
Definition: frame.c:95
static struct ast_format f[]
Definition: format_g726.c:181
unsigned int opt_needs_swap
Definition: frame.c:90
enum ast_frame_type frametype
Definition: frame.h:144
void ast_swapcopy_samples(void *dst, const void *src, int samples)
Definition: frame.c:556
union ast_frame::@172 data
int flags
Definition: frame.c:88
#define AST_MIN_OFFSET
Definition: frame.h:205
int samples
Definition: frame.h:150
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_cache::list, ast_frame::mallocd, ast_frame::offset, ast_frame::ptr, ast_frame_cache::size, and ast_frame::src.

Referenced by ast_frame_free().

342 {
343  if (!fr->mallocd)
344  return;
345 
346 #if !defined(LOW_MEMORY)
347  if (cache && fr->mallocd == AST_MALLOCD_HDR) {
348  /* Cool, only the header is malloc'd, let's just cache those for now
349  * to keep things simple... */
350  struct ast_frame_cache *frames;
351 
352  if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames))) &&
353  (frames->size < FRAME_CACHE_MAX_SIZE)) {
354  AST_LIST_INSERT_HEAD(&frames->list, fr, frame_list);
355  frames->size++;
356  return;
357  }
358  }
359 #endif
360 
361  if (fr->mallocd & AST_MALLOCD_DATA) {
362  if (fr->data.ptr)
363  ast_free(fr->data.ptr - fr->offset);
364  }
365  if (fr->mallocd & AST_MALLOCD_SRC) {
366  if (fr->src)
367  ast_free((void *) fr->src);
368  }
369  if (fr->mallocd & AST_MALLOCD_HDR) {
370  ast_free(fr);
371  }
372 }
int offset
Definition: frame.h:156
void * ast_threadstorage_get(struct ast_threadstorage *ts, size_t init_size)
Retrieve thread storage.
#define FRAME_CACHE_MAX_SIZE
Maximum ast_frame cache size.
Definition: frame.c:62
void * ptr
Definition: frame.h:160
struct ast_frames list
Definition: frame.c:69
static int frames
Definition: iax2-parser.c:49
static struct ast_threadstorage frame_cache
Definition: frame.c:51
const char * src
Definition: frame.h:158
#define AST_MALLOCD_SRC
Definition: frame.h:212
#define AST_LIST_INSERT_HEAD(head, elm, field)
Inserts a list entry at the head of a list.
Definition: linkedlists.h:696
#define ast_free(a)
Definition: astmm.h:97
#define AST_MALLOCD_HDR
Definition: frame.h:208
int mallocd
Definition: frame.h:152
struct ao2_container * cache
Definition: pbx_realtime.c:78
size_t size
Definition: frame.c:70
union ast_frame::@172 data
#define AST_MALLOCD_DATA
Definition: frame.h:210
static void __init_frame_cache ( void  )
static

A per-thread cache of frame headers.

Definition at line 51 of file frame.c.

68 {
char* ast_codec2str ( format_t  codec)

Get a name from a format Gets a name from a format.

Parameters
codeccodec number (1,2,4,8,16,etc.)
Returns
This returns a static string identifying the format on success, 0 on error.

Definition at line 660 of file frame.c.

References ARRAY_LEN, and ast_format_list::desc.

Referenced by moh_alloc(), show_codec_n(), and show_codecs().

661 {
662  int x;
663  char *ret = "unknown";
664  for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) {
665  if (AST_FORMAT_LIST[x].bits == codec) {
666  ret = AST_FORMAT_LIST[x].desc;
667  break;
668  }
669  }
670  return ret;
671 }
#define ARRAY_LEN(a)
Definition: isdn_lib.c:42
char * desc
Definition: frame.h:554
static struct ast_format_list AST_FORMAT_LIST[]
Definition of supported media formats (codecs)
Definition: frame.c:100
format_t ast_codec_choose ( struct ast_codec_pref pref,
format_t  formats,
int  find_best 
)

Pick a codec.

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 1249 of file frame.c.

References ARRAY_LEN, ast_best_codec(), ast_debug, AST_FORMAT_AUDIO_MASK, ast_format_list::bits, and ast_codec_pref::order.

Referenced by __oh323_new(), gtalk_new(), jingle_new(), process_sdp(), sip_new(), and socket_process().

1250 {
1251  int x, slot;
1252  format_t ret = 0;
1253 
1254  for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) {
1255  slot = pref->order[x];
1256 
1257  if (!slot)
1258  break;
1259  if (formats & AST_FORMAT_LIST[slot-1].bits) {
1260  ret = AST_FORMAT_LIST[slot-1].bits;
1261  break;
1262  }
1263  }
1264  if (ret & AST_FORMAT_AUDIO_MASK)
1265  return ret;
1266 
1267  ast_debug(4, "Could not find preferred codec - %s\n", find_best ? "Going for the best codec" : "Returning zero codec");
1268 
1269  return find_best ? ast_best_codec(formats) : 0;
1270 }
#define ARRAY_LEN(a)
Definition: isdn_lib.c:42
char order[sizeof(format_t)*8]
Definition: frame.h:39
format_t ast_best_codec(format_t fmts)
Pick the best audio codec.
Definition: channel.c:1062
#define ast_debug(level,...)
Log a DEBUG message.
Definition: logger.h:236
static struct callattempt * find_best(struct callattempt *outgoing)
find the entry with the best metric, or NULL
Definition: app_queue.c:3540
int64_t format_t
Definition: frame_defs.h:32
Definition: file.c:65
#define AST_FORMAT_AUDIO_MASK
Definition: frame.h:274
format_t bits
Definition: frame.h:551
static struct ast_format_list AST_FORMAT_LIST[]
Definition of supported media formats (codecs)
Definition: frame.c:100
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 1532 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().

1533 {
1534  int len = 0;
1535 
1536  /* XXX Still need speex, and lpc10 XXX */
1537  switch(format) {
1538  case AST_FORMAT_G723_1:
1539  len = (samples / 240) * 20;
1540  break;
1541  case AST_FORMAT_ILBC:
1542  len = (samples / 240) * 50;
1543  break;
1544  case AST_FORMAT_GSM:
1545  len = (samples / 160) * 33;
1546  break;
1547  case AST_FORMAT_G729A:
1548  len = samples / 8;
1549  break;
1550  case AST_FORMAT_SLINEAR:
1551  case AST_FORMAT_SLINEAR16:
1552  len = samples * 2;
1553  break;
1554  case AST_FORMAT_ULAW:
1555  case AST_FORMAT_ALAW:
1556  case AST_FORMAT_TESTLAW:
1557  len = samples;
1558  break;
1559  case AST_FORMAT_G722:
1560  case AST_FORMAT_ADPCM:
1561  case AST_FORMAT_G726:
1562  case AST_FORMAT_G726_AAL2:
1563  len = samples / 2;
1564  break;
1565  case AST_FORMAT_SIREN7:
1566  /* 16,000 samples per second at 32kbps is 4,000 bytes per second */
1567  len = samples / (16000 / 4000);
1568  break;
1569  case AST_FORMAT_SIREN14:
1570  /* 32,000 samples per second at 48kbps is 6,000 bytes per second */
1571  len = (int) samples / ((float) 32000 / 6000);
1572  break;
1573  case AST_FORMAT_G719:
1574  /* 48,000 samples per second at 64kbps is 8,000 bytes per second */
1575  len = (int) samples / ((float) 48000 / 8000);
1576  break;
1577  default:
1578  ast_log(LOG_WARNING, "Unable to calculate sample length for format %s\n", ast_getformatname(format));
1579  }
1580 
1581  return len;
1582 }
#define AST_FORMAT_G723_1
Definition: frame.h:242
#define LOG_WARNING
Definition: logger.h:144
#define AST_FORMAT_G729A
Definition: frame.h:258
#define AST_FORMAT_ALAW
Definition: frame.h:248
#define AST_FORMAT_G726
Definition: frame.h:264
#define AST_FORMAT_G726_AAL2
Definition: frame.h:250
#define AST_FORMAT_SLINEAR16
Definition: frame.h:272
char * ast_getformatname(format_t format)
Get the name of a format.
Definition: frame.c:578
#define AST_FORMAT_SIREN7
Definition: frame.h:268
#define AST_FORMAT_ULAW
Definition: frame.h:246
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
#define AST_FORMAT_TESTLAW
Definition: frame.h:303
void ast_log(int level, const char *file, int line, const char *function, const char *fmt,...)
Used for sending a log message This is the standard logger function. Probably the only way you will i...
Definition: logger.c:1207
#define AST_FORMAT_SIREN14
Definition: frame.h:270
#define AST_FORMAT_SLINEAR
Definition: frame.h:254
#define AST_FORMAT_G719
Definition: frame.h:299
#define AST_FORMAT_ADPCM
Definition: frame.h:252
#define AST_FORMAT_G722
Definition: frame.h:266
static snd_pcm_format_t format
Definition: chan_alsa.c:93
#define AST_FORMAT_ILBC
Definition: frame.h:262
#define AST_FORMAT_GSM
Definition: frame.h:244
int ast_codec_get_samples ( struct ast_frame f)

Returns the number of samples contained in the frame.

Definition at line 1470 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(), ast_frame_subclass::codec, ast_frame::data, ast_frame::datalen, g723_samples(), LOG_WARNING, ast_frame::ptr, speex_samples(), and ast_frame::subclass.

Referenced by ast_rtp_read(), dahdi_encoder_frameout(), isAnsweringMachine(), moh_generate(), schedule_delivery(), socket_process(), and socket_process_meta().

1471 {
1472  int samples = 0;
1473  char tmp[64];
1474 
1475  switch (f->subclass.codec) {
1476  case AST_FORMAT_SPEEX:
1477  samples = speex_samples(f->data.ptr, f->datalen);
1478  break;
1479  case AST_FORMAT_SPEEX16:
1480  samples = 2 * speex_samples(f->data.ptr, f->datalen);
1481  break;
1482  case AST_FORMAT_G723_1:
1483  samples = g723_samples(f->data.ptr, f->datalen);
1484  break;
1485  case AST_FORMAT_ILBC:
1486  samples = 240 * (f->datalen / 50);
1487  break;
1488  case AST_FORMAT_GSM:
1489  samples = 160 * (f->datalen / 33);
1490  break;
1491  case AST_FORMAT_G729A:
1492  samples = f->datalen * 8;
1493  break;
1494  case AST_FORMAT_SLINEAR:
1495  case AST_FORMAT_SLINEAR16:
1496  samples = f->datalen / 2;
1497  break;
1498  case AST_FORMAT_LPC10:
1499  /* assumes that the RTP packet contains one LPC10 frame */
1500  samples = 22 * 8;
1501  samples += (((char *)(f->data.ptr))[7] & 0x1) * 8;
1502  break;
1503  case AST_FORMAT_ULAW:
1504  case AST_FORMAT_ALAW:
1505  case AST_FORMAT_TESTLAW:
1506  samples = f->datalen;
1507  break;
1508  case AST_FORMAT_G722:
1509  case AST_FORMAT_ADPCM:
1510  case AST_FORMAT_G726:
1511  case AST_FORMAT_G726_AAL2:
1512  samples = f->datalen * 2;
1513  break;
1514  case AST_FORMAT_SIREN7:
1515  /* 16,000 samples per second at 32kbps is 4,000 bytes per second */
1516  samples = f->datalen * (16000 / 4000);
1517  break;
1518  case AST_FORMAT_SIREN14:
1519  /* 32,000 samples per second at 48kbps is 6,000 bytes per second */
1520  samples = (int) f->datalen * ((float) 32000 / 6000);
1521  break;
1522  case AST_FORMAT_G719:
1523  /* 48,000 samples per second at 64kbps is 8,000 bytes per second */
1524  samples = (int) f->datalen * ((float) 48000 / 8000);
1525  break;
1526  default:
1527  ast_log(LOG_WARNING, "Unable to calculate samples for format %s\n", ast_getformatname_multiple(tmp, sizeof(tmp), f->subclass.codec));
1528  }
1529  return samples;
1530 }
union ast_frame_subclass subclass
Definition: frame.h:146
#define AST_FORMAT_G723_1
Definition: frame.h:242
void * ptr
Definition: frame.h:160
#define LOG_WARNING
Definition: logger.h:144
static int g723_samples(unsigned char *buf, int maxlen)
Definition: frame.c:1346
format_t codec
Definition: frame.h:137
#define AST_FORMAT_G729A
Definition: frame.h:258
#define AST_FORMAT_LPC10
Definition: frame.h:256
#define AST_FORMAT_ALAW
Definition: frame.h:248
#define AST_FORMAT_SPEEX
Definition: frame.h:260
int datalen
Definition: frame.h:148
#define AST_FORMAT_G726
Definition: frame.h:264
#define AST_FORMAT_G726_AAL2
Definition: frame.h:250
#define AST_FORMAT_SLINEAR16
Definition: frame.h:272
#define AST_FORMAT_SIREN7
Definition: frame.h:268
#define AST_FORMAT_ULAW
Definition: frame.h:246
#define AST_FORMAT_TESTLAW
Definition: frame.h:303
void ast_log(int level, const char *file, int line, const char *function, const char *fmt,...)
Used for sending a log message This is the standard logger function. Probably the only way you will i...
Definition: logger.c:1207
#define AST_FORMAT_SIREN14
Definition: frame.h:270
static int speex_samples(unsigned char *data, int len)
Definition: frame.c:1410
#define AST_FORMAT_SLINEAR
Definition: frame.h:254
#define AST_FORMAT_G719
Definition: frame.h:299
#define AST_FORMAT_ADPCM
Definition: frame.h:252
char * ast_getformatname_multiple(char *buf, size_t size, format_t format)
Get the names of a set of formats.
Definition: frame.c:591
#define AST_FORMAT_G722
Definition: frame.h:266
union ast_frame::@172 data
#define AST_FORMAT_ILBC
Definition: frame.h:262
#define AST_FORMAT_GSM
Definition: frame.h:244
#define AST_FORMAT_SPEEX16
Definition: frame.h:301
int ast_codec_pref_append ( struct ast_codec_pref pref,
format_t  format 
)

Append codec to list.

Append a audio codec to a preference list, removing it first if it was already there.

Definition at line 1099 of file frame.c.

References ARRAY_LEN, ast_codec_pref_remove(), and ast_codec_pref::order.

Referenced by ast_parse_allow_disallow().

1100 {
1101  int x, newindex = 0;
1102 
1104 
1105  for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) {
1106  if (AST_FORMAT_LIST[x].bits == format) {
1107  newindex = x + 1;
1108  break;
1109  }
1110  }
1111 
1112  if (newindex) {
1113  for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) {
1114  if (!pref->order[x]) {
1115  pref->order[x] = newindex;
1116  break;
1117  }
1118  }
1119  }
1120 
1121  return x;
1122 }
#define ARRAY_LEN(a)
Definition: isdn_lib.c:42
char order[sizeof(format_t)*8]
Definition: frame.h:39
void ast_codec_pref_remove(struct ast_codec_pref *pref, format_t format)
Remove audio a codec from a preference list.
Definition: frame.c:1073
static struct ast_format_list AST_FORMAT_LIST[]
Definition of supported media formats (codecs)
Definition: frame.c:100
static snd_pcm_format_t format
Definition: chan_alsa.c:93
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.

Note
Due to a misunderstanding in how codec preferences are stored, this list starts at 'B', not 'A'. For backwards compatibility reasons, this cannot change.
Parameters
prefA codec preference list structure
bufA string denoting codec preference, appropriate for use in line transmission
sizeSize of buf
rightBoolean: if 0, convert from buf to pref; if 1, convert from pref to buf.

Definition at line 1002 of file frame.c.

References ast_codec_pref::order.

Referenced by check_access(), create_addr(), dump_prefs(), and socket_process().

1003 {
1004  int x, differential = (int) 'A', mem;
1005  char *from, *to;
1006 
1007  if (right) {
1008  from = pref->order;
1009  to = buf;
1010  mem = size;
1011  } else {
1012  to = pref->order;
1013  from = buf;
1014  mem = sizeof(format_t) * 8;
1015  }
1016 
1017  memset(to, 0, mem);
1018  for (x = 0; x < sizeof(format_t) * 8; x++) {
1019  if (!from[x])
1020  break;
1021  to[x] = right ? (from[x] + differential) : (from[x] - differential);
1022  }
1023 }
char order[sizeof(format_t)*8]
Definition: frame.h:39
int64_t format_t
Definition: frame_defs.h:32
size_t size
Definition: frame.c:70
struct ast_format_list ast_codec_pref_getsize ( struct ast_codec_pref pref,
format_t  format 
)

Get packet size for codec.

Definition at line 1205 of file frame.c.

References ARRAY_LEN, 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_instance_bridge(), ast_rtp_write(), handle_open_receive_channel_ack_message(), skinny_set_rtp_peer(), and transmit_connect().

1206 {
1207  int x, idx = -1, framems = 0;
1208  struct ast_format_list fmt = { 0, };
1209 
1210  for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) {
1211  if (AST_FORMAT_LIST[x].bits == format) {
1212  fmt = AST_FORMAT_LIST[x];
1213  idx = x;
1214  break;
1215  }
1216  }
1217 
1218  if (idx < 0) {
1219  ast_log(AST_LOG_WARNING, "Format %s unknown; unable to get preferred codec packet size\n", ast_getformatname(format));
1220  return fmt;
1221  }
1222 
1223  for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) {
1224  if (pref->order[x] == (idx + 1)) {
1225  framems = pref->framing[x];
1226  break;
1227  }
1228  }
1229 
1230  /* size validation */
1231  if (!framems)
1232  framems = AST_FORMAT_LIST[idx].def_ms;
1233 
1234  if (AST_FORMAT_LIST[idx].inc_ms && framems % AST_FORMAT_LIST[idx].inc_ms) /* avoid division by zero */
1235  framems -= framems % AST_FORMAT_LIST[idx].inc_ms;
1236 
1237  if (framems < AST_FORMAT_LIST[idx].min_ms)
1238  framems = AST_FORMAT_LIST[idx].min_ms;
1239 
1240  if (framems > AST_FORMAT_LIST[idx].max_ms)
1241  framems = AST_FORMAT_LIST[idx].max_ms;
1242 
1243  fmt.cur_ms = framems;
1244 
1245  return fmt;
1246 }
#define ARRAY_LEN(a)
Definition: isdn_lib.c:42
char order[sizeof(format_t)*8]
Definition: frame.h:39
#define AST_LOG_WARNING
Definition: logger.h:149
Definition of supported media formats (codecs)
Definition: frame.h:550
char * ast_getformatname(format_t format)
Get the name of a format.
Definition: frame.c:578
void ast_log(int level, const char *file, int line, const char *function, const char *fmt,...)
Used for sending a log message This is the standard logger function. Probably the only way you will i...
Definition: logger.c:1207
int framing[64]
Definition: frame.h:40
format_t bits
Definition: frame.h:551
static struct ast_format_list AST_FORMAT_LIST[]
Definition of supported media formats (codecs)
Definition: frame.c:100
static snd_pcm_format_t format
Definition: chan_alsa.c:93
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 1061 of file frame.c.

References 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().

1062 {
1063  int slot = 0;
1064 
1065  if ((idx >= 0) && (idx < sizeof(pref->order))) {
1066  slot = pref->order[idx];
1067  }
1068 
1069  return slot ? AST_FORMAT_LIST[slot - 1].bits : 0;
1070 }
char order[sizeof(format_t)*8]
Definition: frame.h:39
format_t bits
Definition: frame.h:551
static struct ast_format_list AST_FORMAT_LIST[]
Definition of supported media formats (codecs)
Definition: frame.c:100
void ast_codec_pref_prepend ( struct ast_codec_pref pref,
format_t  format,
int  only_if_existing 
)

Prepend codec to list.

Prepend an audio codec to a preference list, removing it first if it was already there.

Definition at line 1125 of file frame.c.

References ARRAY_LEN, ast_codec_pref::framing, and ast_codec_pref::order.

Referenced by create_addr().

1126 {
1127  int x, newindex = 0;
1128 
1129  /* First step is to get the codecs "index number" */
1130  for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) {
1131  if (AST_FORMAT_LIST[x].bits == format) {
1132  newindex = x + 1;
1133  break;
1134  }
1135  }
1136  /* Done if its unknown */
1137  if (!newindex)
1138  return;
1139 
1140  /* Now find any existing occurrence, or the end */
1141  for (x = 0; x < sizeof(format_t) * 8; x++) {
1142  if (!pref->order[x] || pref->order[x] == newindex)
1143  break;
1144  }
1145 
1146  /* If we failed to find any occurrence, set to the end */
1147  if (x == sizeof(format_t) * 8) {
1148  --x;
1149  }
1150 
1151  if (only_if_existing && !pref->order[x])
1152  return;
1153 
1154  /* Move down to make space to insert - either all the way to the end,
1155  or as far as the existing location (which will be overwritten) */
1156  for (; x > 0; x--) {
1157  pref->order[x] = pref->order[x - 1];
1158  pref->framing[x] = pref->framing[x - 1];
1159  }
1160 
1161  /* And insert the new entry */
1162  pref->order[0] = newindex;
1163  pref->framing[0] = 0; /* ? */
1164 }
#define ARRAY_LEN(a)
Definition: isdn_lib.c:42
char order[sizeof(format_t)*8]
Definition: frame.h:39
int64_t format_t
Definition: frame_defs.h:32
int framing[64]
Definition: frame.h:40
format_t bits
Definition: frame.h:551
static struct ast_format_list AST_FORMAT_LIST[]
Definition of supported media formats (codecs)
Definition: frame.c:100
static snd_pcm_format_t format
Definition: chan_alsa.c:93
void ast_codec_pref_remove ( struct ast_codec_pref pref,
format_t  format 
)

Remove codec from pref list.

Remove audio a codec from a preference list.

Definition at line 1073 of file frame.c.

References ARRAY_LEN, ast_codec_pref::framing, and ast_codec_pref::order.

Referenced by ast_codec_pref_append(), and ast_parse_allow_disallow().

1074 {
1075  struct ast_codec_pref oldorder;
1076  int x, y = 0;
1077  int slot;
1078  int size;
1079 
1080  if (!pref->order[0])
1081  return;
1082 
1083  memcpy(&oldorder, pref, sizeof(oldorder));
1084  memset(pref, 0, sizeof(*pref));
1085 
1086  for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) {
1087  slot = oldorder.order[x];
1088  size = oldorder.framing[x];
1089  if (! slot)
1090  break;
1091  if (AST_FORMAT_LIST[slot-1].bits != format) {
1092  pref->order[y] = slot;
1093  pref->framing[y++] = size;
1094  }
1095  }
1096 }
#define ARRAY_LEN(a)
Definition: isdn_lib.c:42
char order[sizeof(format_t)*8]
Definition: frame.h:39
int framing[64]
Definition: frame.h:40
static struct ast_format_list AST_FORMAT_LIST[]
Definition of supported media formats (codecs)
Definition: frame.c:100
static snd_pcm_format_t format
Definition: chan_alsa.c:93
int ast_codec_pref_setsize ( struct ast_codec_pref pref,
format_t  format,
int  framems 
)

Set packet size for codec.

Definition at line 1167 of file frame.c.

References ARRAY_LEN, 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().

1168 {
1169  int x, idx = -1;
1170 
1171  for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) {
1172  if (AST_FORMAT_LIST[x].bits == format) {
1173  idx = x;
1174  break;
1175  }
1176  }
1177 
1178  if (idx < 0)
1179  return -1;
1180 
1181  /* size validation */
1182  if (!framems)
1183  framems = AST_FORMAT_LIST[idx].def_ms;
1184 
1185  if (AST_FORMAT_LIST[idx].inc_ms && framems % AST_FORMAT_LIST[idx].inc_ms) /* avoid division by zero */
1186  framems -= framems % AST_FORMAT_LIST[idx].inc_ms;
1187 
1188  if (framems < AST_FORMAT_LIST[idx].min_ms)
1189  framems = AST_FORMAT_LIST[idx].min_ms;
1190 
1191  if (framems > AST_FORMAT_LIST[idx].max_ms)
1192  framems = AST_FORMAT_LIST[idx].max_ms;
1193 
1194  for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) {
1195  if (pref->order[x] == (idx + 1)) {
1196  pref->framing[x] = framems;
1197  break;
1198  }
1199  }
1200 
1201  return x;
1202 }
#define ARRAY_LEN(a)
Definition: isdn_lib.c:42
char order[sizeof(format_t)*8]
Definition: frame.h:39
int framing[64]
Definition: frame.h:40
static struct ast_format_list AST_FORMAT_LIST[]
Definition of supported media formats (codecs)
Definition: frame.c:100
static snd_pcm_format_t format
Definition: chan_alsa.c:93
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 1025 of file frame.c.

References ast_codec_pref_index(), and ast_getformatname().

Referenced by dump_prefs(), and socket_process().

1026 {
1027  int x;
1028  format_t codec;
1029  size_t total_len, slen;
1030  char *formatname;
1031 
1032  memset(buf, 0, size);
1033  total_len = size;
1034  buf[0] = '(';
1035  total_len--;
1036  for (x = 0; x < sizeof(format_t) * 8; x++) {
1037  if (total_len <= 0)
1038  break;
1039  if (!(codec = ast_codec_pref_index(pref,x)))
1040  break;
1041  if ((formatname = ast_getformatname(codec))) {
1042  slen = strlen(formatname);
1043  if (slen > total_len)
1044  break;
1045  strncat(buf, formatname, total_len - 1); /* safe */
1046  total_len -= slen;
1047  }
1048  if (total_len && x < sizeof(format_t) * 8 - 1 && ast_codec_pref_index(pref, x + 1)) {
1049  strncat(buf, "|", total_len - 1); /* safe */
1050  total_len--;
1051  }
1052  }
1053  if (total_len) {
1054  strncat(buf, ")", total_len - 1); /* safe */
1055  total_len--;
1056  }
1057 
1058  return size - total_len;
1059 }
format_t ast_codec_pref_index(struct ast_codec_pref *pref, int index)
Codec located at a particular place in the preference index.
Definition: frame.c:1061
char * ast_getformatname(format_t format)
Get the name of a format.
Definition: frame.c:578
int64_t format_t
Definition: frame_defs.h:32
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().

631 {
632  int x;
633 
634  for (x = 0; x < ARRAY_LEN(ast_codec_alias_table); x++) {
635  if (!strcmp(in,ast_codec_alias_table[x].alias))
636  return ast_codec_alias_table[x].realname;
637  }
638  return in;
639 }
#define ARRAY_LEN(a)
Definition: isdn_lib.c:42
int ast_frame_adjust_volume ( struct ast_frame f,
int  adjustment 
)

Adjusts the volume of the audio samples contained in a frame.

Parameters
fThe frame containing the samples (must be AST_FRAME_VOICE and AST_FORMAT_SLINEAR)
adjustmentThe number of dB to adjust up or down.
Returns
0 for success, non-zero for an error

Definition at line 1584 of file frame.c.

References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_slinear_saturated_divide(), ast_slinear_saturated_multiply(), ast_frame_subclass::codec, ast_frame::data, ast_frame::frametype, ast_frame::ptr, ast_frame::samples, and ast_frame::subclass.

Referenced by audiohook_read_frame_single(), audiohook_volume_callback(), conf_run(), and volume_callback().

1585 {
1586  int count;
1587  short *fdata = f->data.ptr;
1588  short adjust_value = abs(adjustment);
1589 
1591  return -1;
1592 
1593  if (!adjustment)
1594  return 0;
1595 
1596  for (count = 0; count < f->samples; count++) {
1597  if (adjustment > 0) {
1598  ast_slinear_saturated_multiply(&fdata[count], &adjust_value);
1599  } else if (adjustment < 0) {
1600  ast_slinear_saturated_divide(&fdata[count], &adjust_value);
1601  }
1602  }
1603 
1604  return 0;
1605 }
union ast_frame_subclass subclass
Definition: frame.h:146
void * ptr
Definition: frame.h:160
format_t codec
Definition: frame.h:137
static force_inline void ast_slinear_saturated_multiply(short *input, short *value)
Definition: utils.h:338
static force_inline void ast_slinear_saturated_divide(short *input, short *value)
Definition: utils.h:351
#define AST_FORMAT_SLINEAR
Definition: frame.h:254
enum ast_frame_type frametype
Definition: frame.h:144
union ast_frame::@172 data
int samples
Definition: frame.h:150
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 1629 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().

1630 {
1631  struct ast_frame *next;
1632 
1633  for (next = AST_LIST_NEXT(frame, frame_list);
1634  frame;
1635  frame = next, next = frame ? AST_LIST_NEXT(frame, frame_list) : NULL) {
1636  memset(frame->data.ptr, 0, frame->datalen);
1637  }
1638  return 0;
1639 }
void * ptr
Definition: frame.h:160
#define AST_LIST_NEXT(elm, field)
Returns the next entry in the list after the given entry.
Definition: linkedlists.h:438
int datalen
Definition: frame.h:148
struct ast_frame * next
Definition: frame.h:164
Data structure associated with a single frame of data.
Definition: frame.h:142
union ast_frame::@172 data
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(), ast_frame_subclass::codec, COLOR_BLACK, COLOR_BRCYAN, COLOR_BRGREEN, COLOR_BRMAGENTA, COLOR_BRRED, COLOR_YELLOW, ast_frame::data, ast_frame::datalen, ast_frame::frametype, ast_frame_subclass::integer, ast_frame::ptr, ast_control_t38_parameters::request_response, ast_frame::subclass, and term_color().

Referenced by __ast_read(), and ast_write().

779 {
780  const char noname[] = "unknown";
781  char ftype[40] = "Unknown Frametype";
782  char cft[80];
783  char subclass[40] = "Unknown Subclass";
784  char csub[80];
785  char moreinfo[40] = "";
786  char cn[60];
787  char cp[40];
788  char cmn[40];
789  const char *message = "Unknown";
790 
791  if (!name)
792  name = noname;
793 
794 
795  if (!f) {
796  ast_verbose("%s [ %s (NULL) ] [%s]\n",
797  term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)),
798  term_color(cft, "HANGUP", COLOR_BRRED, COLOR_BLACK, sizeof(cft)),
799  term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn)));
800  return;
801  }
802  /* XXX We should probably print one each of voice and video when the format changes XXX */
803  if (f->frametype == AST_FRAME_VOICE)
804  return;
805  if (f->frametype == AST_FRAME_VIDEO)
806  return;
807  switch(f->frametype) {
809  strcpy(ftype, "DTMF Begin");
810  subclass[0] = f->subclass.integer;
811  subclass[1] = '\0';
812  break;
813  case AST_FRAME_DTMF_END:
814  strcpy(ftype, "DTMF End");
815  subclass[0] = f->subclass.integer;
816  subclass[1] = '\0';
817  break;
818  case AST_FRAME_CONTROL:
819  strcpy(ftype, "Control");
820  switch (f->subclass.integer) {
821  case AST_CONTROL_HANGUP:
822  strcpy(subclass, "Hangup");
823  break;
824  case AST_CONTROL_RING:
825  strcpy(subclass, "Ring");
826  break;
827  case AST_CONTROL_RINGING:
828  strcpy(subclass, "Ringing");
829  break;
830  case AST_CONTROL_ANSWER:
831  strcpy(subclass, "Answer");
832  break;
833  case AST_CONTROL_BUSY:
834  strcpy(subclass, "Busy");
835  break;
837  strcpy(subclass, "Take Off Hook");
838  break;
839  case AST_CONTROL_OFFHOOK:
840  strcpy(subclass, "Line Off Hook");
841  break;
843  strcpy(subclass, "Congestion");
844  break;
845  case AST_CONTROL_FLASH:
846  strcpy(subclass, "Flash");
847  break;
848  case AST_CONTROL_WINK:
849  strcpy(subclass, "Wink");
850  break;
851  case AST_CONTROL_OPTION:
852  strcpy(subclass, "Option");
853  break;
855  strcpy(subclass, "Key Radio");
856  break;
858  strcpy(subclass, "Unkey Radio");
859  break;
860  case AST_CONTROL_HOLD:
861  strcpy(subclass, "Hold");
862  break;
863  case AST_CONTROL_UNHOLD:
864  strcpy(subclass, "Unhold");
865  break;
867  if (f->datalen != sizeof(struct ast_control_t38_parameters)) {
868  message = "Invalid";
869  } else {
870  struct ast_control_t38_parameters *parameters = f->data.ptr;
871  enum ast_control_t38 state = parameters->request_response;
872  if (state == AST_T38_REQUEST_NEGOTIATE)
873  message = "Negotiation Requested";
874  else if (state == AST_T38_REQUEST_TERMINATE)
875  message = "Negotiation Request Terminated";
876  else if (state == AST_T38_NEGOTIATED)
877  message = "Negotiated";
878  else if (state == AST_T38_TERMINATED)
879  message = "Terminated";
880  else if (state == AST_T38_REFUSED)
881  message = "Refused";
882  }
883  snprintf(subclass, sizeof(subclass), "T38_Parameters/%s", message);
884  break;
885  case -1:
886  strcpy(subclass, "Stop generators");
887  break;
888  default:
889  snprintf(subclass, sizeof(subclass), "Unknown control '%d'", f->subclass.integer);
890  }
891  break;
892  case AST_FRAME_NULL:
893  strcpy(ftype, "Null Frame");
894  strcpy(subclass, "N/A");
895  break;
896  case AST_FRAME_IAX:
897  /* Should never happen */
898  strcpy(ftype, "IAX Specific");
899  snprintf(subclass, sizeof(subclass), "IAX Frametype %d", f->subclass.integer);
900  break;
901  case AST_FRAME_TEXT:
902  strcpy(ftype, "Text");
903  strcpy(subclass, "N/A");
904  ast_copy_string(moreinfo, f->data.ptr, sizeof(moreinfo));
905  break;
906  case AST_FRAME_IMAGE:
907  strcpy(ftype, "Image");
908  snprintf(subclass, sizeof(subclass), "Image format %s\n", ast_getformatname(f->subclass.codec));
909  break;
910  case AST_FRAME_HTML:
911  strcpy(ftype, "HTML");
912  switch (f->subclass.integer) {
913  case AST_HTML_URL:
914  strcpy(subclass, "URL");
915  ast_copy_string(moreinfo, f->data.ptr, sizeof(moreinfo));
916  break;
917  case AST_HTML_DATA:
918  strcpy(subclass, "Data");
919  break;
920  case AST_HTML_BEGIN:
921  strcpy(subclass, "Begin");
922  break;
923  case AST_HTML_END:
924  strcpy(subclass, "End");
925  break;
926  case AST_HTML_LDCOMPLETE:
927  strcpy(subclass, "Load Complete");
928  break;
929  case AST_HTML_NOSUPPORT:
930  strcpy(subclass, "No Support");
931  break;
932  case AST_HTML_LINKURL:
933  strcpy(subclass, "Link URL");
934  ast_copy_string(moreinfo, f->data.ptr, sizeof(moreinfo));
935  break;
936  case AST_HTML_UNLINK:
937  strcpy(subclass, "Unlink");
938  break;
939  case AST_HTML_LINKREJECT:
940  strcpy(subclass, "Link Reject");
941  break;
942  default:
943  snprintf(subclass, sizeof(subclass), "Unknown HTML frame '%d'\n", f->subclass.integer);
944  break;
945  }
946  break;
947  case AST_FRAME_MODEM:
948  strcpy(ftype, "Modem");
949  switch (f->subclass.integer) {
950  case AST_MODEM_T38:
951  strcpy(subclass, "T.38");
952  break;
953  case AST_MODEM_V150:
954  strcpy(subclass, "V.150");
955  break;
956  default:
957  snprintf(subclass, sizeof(subclass), "Unknown MODEM frame '%d'\n", f->subclass.integer);
958  break;
959  }
960  break;
961  default:
962  snprintf(ftype, sizeof(ftype), "Unknown Frametype '%u'", f->frametype);
963  }
964  if (!ast_strlen_zero(moreinfo))
965  ast_verbose("%s [ TYPE: %s (%u) SUBCLASS: %s (%d) '%s' ] [%s]\n",
966  term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)),
967  term_color(cft, ftype, COLOR_BRRED, COLOR_BLACK, sizeof(cft)),
968  f->frametype,
969  term_color(csub, subclass, COLOR_BRCYAN, COLOR_BLACK, sizeof(csub)),
970  f->subclass.integer,
971  term_color(cmn, moreinfo, COLOR_BRGREEN, COLOR_BLACK, sizeof(cmn)),
972  term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn)));
973  else
974  ast_verbose("%s [ TYPE: %s (%u) SUBCLASS: %s (%d) ] [%s]\n",
975  term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)),
976  term_color(cft, ftype, COLOR_BRRED, COLOR_BLACK, sizeof(cft)),
977  f->frametype,
978  term_color(csub, subclass, COLOR_BRCYAN, COLOR_BLACK, sizeof(csub)),
979  f->subclass.integer,
980  term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn)));
981 }
union ast_frame_subclass subclass
Definition: frame.h:146
void * ptr
Definition: frame.h:160
#define AST_HTML_BEGIN
Definition: frame.h:226
#define COLOR_YELLOW
Definition: term.h:54
void ast_verbose(const char *fmt,...)
Definition: logger.c:1568
enum ast_control_t38 request_response
Definition: frame.h:412
#define AST_MODEM_T38
Definition: frame.h:216
#define AST_HTML_END
Definition: frame.h:228
format_t codec
Definition: frame.h:137
#define AST_HTML_URL
Definition: frame.h:222
#define COLOR_BRCYAN
Definition: term.h:60
#define COLOR_BRRED
Definition: term.h:50
#define AST_HTML_DATA
Definition: frame.h:224
static force_inline int attribute_pure ast_strlen_zero(const char *s)
Definition: strings.h:63
int datalen
Definition: frame.h:148
#define COLOR_BRGREEN
Definition: term.h:52
char * term_color(char *outbuf, const char *inbuf, int fgcolor, int bgcolor, int maxout)
Definition: term.c:184
#define COLOR_BRMAGENTA
Definition: term.h:58
#define COLOR_BLACK
Definition: term.h:47
char * ast_getformatname(format_t format)
Get the name of a format.
Definition: frame.c:578
#define AST_HTML_LDCOMPLETE
Definition: frame.h:230
#define AST_HTML_LINKURL
Definition: frame.h:234
static const char name[]
#define AST_HTML_NOSUPPORT
Definition: frame.h:232
#define AST_MODEM_V150
Definition: frame.h:218
void ast_copy_string(char *dst, const char *src, size_t size)
Size-limited null-terminating string copy.
Definition: strings.h:223
#define AST_HTML_UNLINK
Definition: frame.h:236
enum ast_frame_type frametype
Definition: frame.h:144
#define AST_HTML_LINKREJECT
Definition: frame.h:238
union ast_frame::@172 data
ast_control_t38
Definition: frame.h:384
static char prefix[MAX_PREFIX]
Definition: http.c:107
void ast_frame_free ( struct ast_frame fr,
int  cache 
)

Requests a frame to be allocated.

Parameters
sourceRequest a frame be allocated. source is an optional source of the frame, len is the requested length, or "0" if the caller will supply the buffer

Frees a frame or list of frames

Parameters
frFrame to free, or head of list to free
cacheWhether 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().

376 {
377  struct ast_frame *next;
378 
379  for (next = AST_LIST_NEXT(frame, frame_list);
380  frame;
381  frame = next, next = frame ? AST_LIST_NEXT(frame, frame_list) : NULL) {
382  __frame_free(frame, cache);
383  }
384 }
static void __frame_free(struct ast_frame *fr, int cache)
Definition: frame.c:341
#define AST_LIST_NEXT(elm, field)
Returns the next entry in the list after the given entry.
Definition: linkedlists.h:438
struct ao2_container * cache
Definition: pbx_realtime.c:78
struct ast_frame * next
Definition: frame.h:164
Data structure associated with a single frame of data.
Definition: frame.h:142
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, frames, ast_frame_cache::list, ast_frame::mallocd, ast_frame::mallocd_hdr_len, and ast_frame_cache::size.

Referenced by ast_frisolate().

300 {
301  struct ast_frame *f;
302 
303 #if !defined(LOW_MEMORY)
304  struct ast_frame_cache *frames;
305 
306  if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) {
307  if ((f = AST_LIST_REMOVE_HEAD(&frames->list, frame_list))) {
308  size_t mallocd_len = f->mallocd_hdr_len;
309  memset(f, 0, sizeof(*f));
310  f->mallocd_hdr_len = mallocd_len;
312  frames->size--;
313  return f;
314  }
315  }
316  if (!(f = ast_calloc_cache(1, sizeof(*f))))
317  return NULL;
318 #else
319  if (!(f = ast_calloc(1, sizeof(*f))))
320  return NULL;
321 #endif
322 
323  f->mallocd_hdr_len = sizeof(*f);
324 
325  return f;
326 }
void * ast_threadstorage_get(struct ast_threadstorage *ts, size_t init_size)
Retrieve thread storage.
struct ast_frames list
Definition: frame.c:69
static int frames
Definition: iax2-parser.c:49
static struct ast_threadstorage frame_cache
Definition: frame.c:51
size_t mallocd_hdr_len
Definition: frame.h:154
#define AST_LIST_REMOVE_HEAD(head, field)
Removes and returns the head entry from a list.
Definition: linkedlists.h:818
static struct ast_format f[]
Definition: format_g726.c:181
#define AST_MALLOCD_HDR
Definition: frame.h:208
int mallocd
Definition: frame.h:152
#define ast_calloc(a, b)
Definition: astmm.h:82
Data structure associated with a single frame of data.
Definition: frame.h:142
size_t size
Definition: frame.c:70
#define ast_calloc_cache(a, b)
Definition: astmm.h:85
int ast_frame_slinear_sum ( struct ast_frame f1,
struct ast_frame f2 
)

Sums two frames of audio samples.

Parameters
f1The first frame (which will contain the result)
f2The second frame
Returns
0 for success, non-zero for an error

The frames must be AST_FRAME_VOICE and must contain AST_FORMAT_SLINEAR samples, and must contain the same number of samples.

Definition at line 1607 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.

1608 {
1609  int count;
1610  short *data1, *data2;
1611 
1612  if ((f1->frametype != AST_FRAME_VOICE) || (f1->subclass.codec != AST_FORMAT_SLINEAR))
1613  return -1;
1614 
1615  if ((f2->frametype != AST_FRAME_VOICE) || (f2->subclass.codec != AST_FORMAT_SLINEAR))
1616  return -1;
1617 
1618  if (f1->samples != f2->samples)
1619  return -1;
1620 
1621  for (count = 0, data1 = f1->data.ptr, data2 = f2->data.ptr;
1622  count < f1->samples;
1623  count++, data1++, data2++)
1624  ast_slinear_saturated_add(data1, data2);
1625 
1626  return 0;
1627 }
union ast_frame_subclass subclass
Definition: frame.h:146
void * ptr
Definition: frame.h:160
format_t codec
Definition: frame.h:137
static force_inline void ast_slinear_saturated_add(short *input, short *value)
Definition: utils.h:312
#define AST_FORMAT_SLINEAR
Definition: frame.h:254
enum ast_frame_type frametype
Definition: frame.h:144
union ast_frame::@172 data
int samples
Definition: frame.h:150
struct ast_frame* ast_frdup ( const struct ast_frame fr)

Copies a frame.

Parameters
frframe to copy Duplicates a frame – should only rarely be used, typically frisolate is good enough
Returns
Returns a frame on success, NULL on error

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, frame_cache, frames, ast_frame::frametype, ast_frame::len, len(), ast_frame_cache::list, ast_frame::mallocd, ast_frame::mallocd_hdr_len, ast_frame::offset, ast_frame::ptr, ast_frame::samples, ast_frame::seqno, ast_frame_cache::size, 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_both(), audiohook_read_frame_single(), autoservice_run(), multicast_rtp_write(), process_dtmf_rfc2833(), and recordthread().

475 {
476  struct ast_frame *out = NULL;
477  int len, srclen = 0;
478  void *buf = NULL;
479 
480 #if !defined(LOW_MEMORY)
481  struct ast_frame_cache *frames;
482 #endif
483 
484  /* Start with standard stuff */
485  len = sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen;
486  /* If we have a source, add space for it */
487  /*
488  * XXX Watch out here - if we receive a src which is not terminated
489  * properly, we can be easily attacked. Should limit the size we deal with.
490  */
491  if (f->src)
492  srclen = strlen(f->src);
493  if (srclen > 0)
494  len += srclen + 1;
495 
496 #if !defined(LOW_MEMORY)
497  if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) {
499  if (out->mallocd_hdr_len >= len) {
500  size_t mallocd_len = out->mallocd_hdr_len;
501 
503  memset(out, 0, sizeof(*out));
504  out->mallocd_hdr_len = mallocd_len;
505  buf = out;
506  frames->size--;
507  break;
508  }
509  }
511  }
512 #endif
513 
514  if (!buf) {
515  if (!(buf = ast_calloc_cache(1, len)))
516  return NULL;
517  out = buf;
518  out->mallocd_hdr_len = len;
519  }
520 
521  out->frametype = f->frametype;
522  out->subclass.codec = f->subclass.codec;
523  out->datalen = f->datalen;
524  out->samples = f->samples;
525  out->delivery = f->delivery;
526  /* Even though this new frame was allocated from the heap, we can't mark it
527  * with AST_MALLOCD_HDR, AST_MALLOCD_DATA and AST_MALLOCD_SRC, because that
528  * would cause ast_frfree() to attempt to individually free each of those
529  * under the assumption that they were separately allocated. Since this frame
530  * was allocated in a single allocation, we'll only mark it as if the header
531  * was heap-allocated; this will result in the entire frame being properly freed.
532  */
533  out->mallocd = AST_MALLOCD_HDR;
535  if (out->datalen) {
536  out->data.ptr = buf + sizeof(*out) + AST_FRIENDLY_OFFSET;
537  memcpy(out->data.ptr, f->data.ptr, out->datalen);
538  } else {
539  out->data.uint32 = f->data.uint32;
540  }
541  if (srclen > 0) {
542  /* This may seem a little strange, but it's to avoid a gcc (4.2.4) compiler warning */
543  char *src;
544  out->src = buf + sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen;
545  src = (char *) out->src;
546  /* Must have space since we allocated for it */
547  strcpy(src, f->src);
548  }
550  out->ts = f->ts;
551  out->len = f->len;
552  out->seqno = f->seqno;
553  return out;
554 }
union ast_frame_subclass subclass
Definition: frame.h:146
int offset
Definition: frame.h:156
void * ast_threadstorage_get(struct ast_threadstorage *ts, size_t init_size)
Retrieve thread storage.
int seqno
Definition: frame.h:172
void * ptr
Definition: frame.h:160
long ts
Definition: frame.h:168
struct ast_frames list
Definition: frame.c:69
#define ast_copy_flags(dest, src, flagz)
Definition: utils.h:84
format_t codec
Definition: frame.h:137
#define AST_LIST_TRAVERSE_SAFE_END
Closes a safe loop traversal block.
Definition: linkedlists.h:600
static int frames
Definition: iax2-parser.c:49
static struct ast_threadstorage frame_cache
Definition: frame.c:51
#define AST_FRIENDLY_OFFSET
Offset into a frame&#39;s data buffer.
Definition: frame.h:204
const char * src
Definition: frame.h:158
int datalen
Definition: frame.h:148
#define AST_LIST_REMOVE_CURRENT(field)
Removes the current entry from a list during a traversal.
Definition: linkedlists.h:554
size_t mallocd_hdr_len
Definition: frame.h:154
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
#define AST_MALLOCD_HDR
Definition: frame.h:208
struct timeval delivery
Definition: frame.h:162
int mallocd
Definition: frame.h:152
Data structure associated with a single frame of data.
Definition: frame.h:142
uint32_t uint32
Definition: frame.h:160
#define AST_LIST_TRAVERSE_SAFE_BEGIN(head, var, field)
Loops safely over (traverses) the entries in a list.
Definition: linkedlists.h:528
enum ast_frame_type frametype
Definition: frame.h:144
size_t size
Definition: frame.c:70
union ast_frame::@172 data
long len
Definition: frame.h:170
int samples
Definition: frame.h:150
#define ast_calloc_cache(a, b)
Definition: astmm.h:85
struct ast_frame* ast_frisolate ( struct ast_frame fr)

'isolates' a frame by duplicating non-malloc'ed components (header, src, data). On return all components are malloc'ed

Makes a frame independent of any static storage.

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_dsp_process(), 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().

392 {
393  struct ast_frame *out;
394  void *newdata;
395 
396  /* if none of the existing frame is malloc'd, let ast_frdup() do it
397  since it is more efficient
398  */
399  if (fr->mallocd == 0) {
400  return ast_frdup(fr);
401  }
402 
403  /* if everything is already malloc'd, we are done */
406  return fr;
407  }
408 
409  if (!(fr->mallocd & AST_MALLOCD_HDR)) {
410  /* Allocate a new header if needed */
411  if (!(out = ast_frame_header_new())) {
412  return NULL;
413  }
414  out->frametype = fr->frametype;
415  out->subclass.codec = fr->subclass.codec;
416  out->datalen = fr->datalen;
417  out->samples = fr->samples;
418  out->offset = fr->offset;
419  /* Copy the timing data */
422  out->ts = fr->ts;
423  out->len = fr->len;
424  out->seqno = fr->seqno;
425  }
426  } else {
427  out = fr;
428  }
429 
430  if (!(fr->mallocd & AST_MALLOCD_SRC) && fr->src) {
431  if (!(out->src = ast_strdup(fr->src))) {
432  if (out != fr) {
433  ast_free(out);
434  }
435  return NULL;
436  }
437  } else {
438  out->src = fr->src;
439  fr->src = NULL;
440  fr->mallocd &= ~AST_MALLOCD_SRC;
441  }
442 
443  if (!(fr->mallocd & AST_MALLOCD_DATA)) {
444  if (!fr->datalen) {
445  out->data.uint32 = fr->data.uint32;
447  return out;
448  }
449  if (!(newdata = ast_malloc(fr->datalen + AST_FRIENDLY_OFFSET))) {
450  if (out->src != fr->src) {
451  ast_free((void *) out->src);
452  }
453  if (out != fr) {
454  ast_free(out);
455  }
456  return NULL;
457  }
458  newdata += AST_FRIENDLY_OFFSET;
460  out->datalen = fr->datalen;
461  memcpy(newdata, fr->data.ptr, fr->datalen);
462  out->data.ptr = newdata;
463  } else {
464  out->data = fr->data;
465  memset(&fr->data, 0, sizeof(fr->data));
466  fr->mallocd &= ~AST_MALLOCD_DATA;
467  }
468 
470 
471  return out;
472 }
union ast_frame_subclass subclass
Definition: frame.h:146
int offset
Definition: frame.h:156
int seqno
Definition: frame.h:172
#define ast_strdup(a)
Definition: astmm.h:109
#define ast_test_flag(p, flag)
Definition: utils.h:63
void * ptr
Definition: frame.h:160
long ts
Definition: frame.h:168
#define ast_copy_flags(dest, src, flagz)
Definition: utils.h:84
format_t codec
Definition: frame.h:137
static struct ast_frame * ast_frame_header_new(void)
Definition: frame.c:299
#define AST_FRIENDLY_OFFSET
Offset into a frame&#39;s data buffer.
Definition: frame.h:204
const char * src
Definition: frame.h:158
int datalen
Definition: frame.h:148
#define AST_MALLOCD_SRC
Definition: frame.h:212
#define ast_free(a)
Definition: astmm.h:97
#define AST_MALLOCD_HDR
Definition: frame.h:208
int mallocd
Definition: frame.h:152
Data structure associated with a single frame of data.
Definition: frame.h:142
uint32_t uint32
Definition: frame.h:160
enum ast_frame_type frametype
Definition: frame.h:144
#define ast_malloc(a)
Definition: astmm.h:91
union ast_frame::@172 data
long len
Definition: frame.h:170
struct ast_frame * ast_frdup(const struct ast_frame *fr)
Copies a frame.
Definition: frame.c:474
int samples
Definition: frame.h:150
#define AST_MALLOCD_DATA
Definition: frame.h:210
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().

573 {
574  *size = ARRAY_LEN(AST_FORMAT_LIST);
575  return AST_FORMAT_LIST;
576 }
#define ARRAY_LEN(a)
Definition: isdn_lib.c:42
static struct ast_format_list AST_FORMAT_LIST[]
Definition of supported media formats (codecs)
Definition: frame.c:100
struct ast_format_list* ast_get_format_list_index ( int  idx)

Definition at line 567 of file frame.c.

568 {
569  return &AST_FORMAT_LIST[idx];
570 }
static struct ast_format_list AST_FORMAT_LIST[]
Definition of supported media formats (codecs)
Definition: frame.c:100
format_t ast_getformatbyname ( const char *  name)

Gets a format from a name.

Parameters
namestring of format
Returns
This returns the form of the format in binary on success, 0 on error.

Definition at line 641 of file frame.c.

References ARRAY_LEN, ast_expand_codec_alias(), ast_format_list::bits, and format.

Referenced by ast_parse_allow_disallow(), iax_template_parse(), load_moh_classes(), local_ast_moh_start(), reload_config(), and try_suggested_sip_codec().

642 {
643  int x, all;
644  format_t format = 0;
645 
646  all = strcasecmp(name, "all") ? 0 : 1;
647  for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) {
648  if (all ||
649  !strcasecmp(AST_FORMAT_LIST[x].name,name) ||
650  !strcasecmp(AST_FORMAT_LIST[x].name, ast_expand_codec_alias(name))) {
651  format |= AST_FORMAT_LIST[x].bits;
652  if (!all)
653  break;
654  }
655  }
656 
657  return format;
658 }
#define ARRAY_LEN(a)
Definition: isdn_lib.c:42
static const char * ast_expand_codec_alias(const char *in)
Definition: frame.c:630
int64_t format_t
Definition: frame_defs.h:32
static const char name[]
format_t bits
Definition: frame.h:551
static struct ast_format_list AST_FORMAT_LIST[]
Definition of supported media formats (codecs)
Definition: frame.c:100
static snd_pcm_format_t format
Definition: chan_alsa.c:93
char* ast_getformatname ( format_t  format)

Get the name of a format.

Parameters
formatid of format
Returns
A static string containing the name of the format or "unknown" if unknown.

Definition at line 578 of file frame.c.

References ARRAY_LEN, ast_format_list::bits, and ast_format_list::name.

Referenced by __ast_play_and_record(), __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(), show_codecs(), 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().

579 {
580  int x;
581  char *ret = "unknown";
582  for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) {
583  if (AST_FORMAT_LIST[x].bits == format) {
584  ret = AST_FORMAT_LIST[x].name;
585  break;
586  }
587  }
588  return ret;
589 }
#define ARRAY_LEN(a)
Definition: isdn_lib.c:42
char * name
Definition: frame.h:552
static struct ast_format_list AST_FORMAT_LIST[]
Definition of supported media formats (codecs)
Definition: frame.c:100
static snd_pcm_format_t format
Definition: chan_alsa.c:93
char* ast_getformatname_multiple ( char *  buf,
size_t  size,
format_t  format 
)

Get the names of a set of formats.

Parameters
bufa buffer for the output string
sizesize of buf (bytes)
formatthe 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)"
Returns
The return value is buf.

Definition at line 591 of file frame.c.

References ARRAY_LEN, ast_copy_string(), 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(), iax2_bridge(), 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().

592 {
593  int x;
594  unsigned len;
595  char *start, *end = buf;
596 
597  if (!size)
598  return buf;
599  snprintf(end, size, "0x%llx (", (unsigned long long) format);
600  len = strlen(end);
601  end += len;
602  size -= len;
603  start = end;
604  for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) {
605  if (AST_FORMAT_LIST[x].bits & format) {
606  snprintf(end, size, "%s|", AST_FORMAT_LIST[x].name);
607  len = strlen(end);
608  end += len;
609  size -= len;
610  }
611  }
612  if (start == end)
613  ast_copy_string(start, "nothing)", size);
614  else if (size > 1)
615  *(end - 1) = ')';
616  return buf;
617 }
#define ARRAY_LEN(a)
Definition: isdn_lib.c:42
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
static const char name[]
void ast_copy_string(char *dst, const char *src, size_t size)
Size-limited null-terminating string copy.
Definition: strings.h:223
static struct ast_format_list AST_FORMAT_LIST[]
Definition of supported media formats (codecs)
Definition: frame.c:100
static snd_pcm_format_t format
Definition: chan_alsa.c:93
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.

Returns
Returns number of errors encountered during parsing

Definition at line 1272 of file frame.c.

References ast_codec_pref_append(), ast_codec_pref_remove(), ast_codec_pref_setsize(), ast_debug, AST_FORMAT_AUDIO_MASK, 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(), reload_config(), set_config(), skinny_unregister(), and update_common_options().

1273 {
1274  int errors = 0, framems = 0;
1275  char *parse = NULL, *this = NULL, *psize = NULL;
1276  format_t format = 0;
1277 
1278  parse = ast_strdupa(list);
1279  while ((this = strsep(&parse, ","))) {
1280  framems = 0;
1281  if ((psize = strrchr(this, ':'))) {
1282  *psize++ = '\0';
1283  ast_debug(1, "Packetization for codec: %s is %s\n", this, psize);
1284  framems = atoi(psize);
1285  if (framems < 0) {
1286  framems = 0;
1287  errors++;
1288  ast_log(LOG_WARNING, "Bad packetization value for codec %s\n", this);
1289  }
1290  }
1291  if (!(format = ast_getformatbyname(this))) {
1292  ast_log(LOG_WARNING, "Cannot %s unknown format '%s'\n", allowing ? "allow" : "disallow", this);
1293  errors++;
1294  continue;
1295  }
1296 
1297  if (mask) {
1298  if (allowing)
1299  *mask |= format;
1300  else
1301  *mask &= ~format;
1302  }
1303 
1304  /* Set up a preference list for audio. Do not include video in preferences
1305  since we can not transcode video and have to use whatever is offered
1306  */
1307  if (pref && (format & AST_FORMAT_AUDIO_MASK)) {
1308  if (strcasecmp(this, "all")) {
1309  if (allowing) {
1310  ast_codec_pref_append(pref, format);
1311  ast_codec_pref_setsize(pref, format, framems);
1312  }
1313  else
1314  ast_codec_pref_remove(pref, format);
1315  } else if (!allowing) {
1316  memset(pref, 0, sizeof(*pref));
1317  }
1318  }
1319  }
1320  return errors;
1321 }
char * strsep(char **str, const char *delims)
int ast_codec_pref_setsize(struct ast_codec_pref *pref, format_t format, int framems)
Set packet size for codec.
Definition: frame.c:1167
#define LOG_WARNING
Definition: logger.h:144
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: frame.c:1099
#define ast_debug(level,...)
Log a DEBUG message.
Definition: logger.h:236
void ast_codec_pref_remove(struct ast_codec_pref *pref, format_t format)
Remove audio a codec from a preference list.
Definition: frame.c:1073
#define ast_strdupa(s)
duplicate a string in memory from the stack
Definition: utils.h:663
format_t ast_getformatbyname(const char *name)
Gets a format from a name.
Definition: frame.c:641
int64_t format_t
Definition: frame_defs.h:32
void ast_log(int level, const char *file, int line, const char *function, const char *fmt,...)
Used for sending a log message This is the standard logger function. Probably the only way you will i...
Definition: logger.c:1207
static void parse(struct mgcp_request *req)
Definition: chan_mgcp.c:1858
#define AST_FORMAT_AUDIO_MASK
Definition: frame.h:274
static snd_pcm_format_t format
Definition: chan_alsa.c:93
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().

295 {
296  ast_free(s);
297 }
#define ast_free(a)
Definition: astmm.h:97
int ast_smoother_get_flags ( struct ast_smoother s)

Definition at line 193 of file frame.c.

References ast_smoother::flags.

194 {
195  return s->flags;
196 }
int flags
Definition: frame.c:88
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().

184 {
185  struct ast_smoother *s;
186  if (size < 1)
187  return NULL;
188  if ((s = ast_malloc(sizeof(*s))))
190  return s;
191 }
void ast_smoother_reset(struct ast_smoother *s, int bytes)
Definition: frame.c:155
int size
Definition: frame.c:86
#define ast_malloc(a)
Definition: astmm.h:91
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().

245 {
246  struct ast_frame *opt;
247  int len;
248 
249  /* IF we have an optimization frame, send it */
250  if (s->opt) {
251  if (s->opt->offset < AST_FRIENDLY_OFFSET)
252  ast_log(LOG_WARNING, "Returning a frame of inappropriate offset (%d).\n",
253  s->opt->offset);
254  opt = s->opt;
255  s->opt = NULL;
256  return opt;
257  }
258 
259  /* Make sure we have enough data */
260  if (s->len < s->size) {
261  /* Or, if this is a G.729 frame with VAD on it, send it immediately anyway */
262  if (!((s->flags & AST_SMOOTHER_FLAG_G729) && (s->len % 10)))
263  return NULL;
264  }
265  len = s->size;
266  if (len > s->len)
267  len = s->len;
268  /* Make frame */
270  s->f.subclass.codec = s->format;
273  s->f.datalen = len;
274  /* Samples will be improper given VAD, but with VAD the concept really doesn't even exist */
275  s->f.samples = len * s->samplesperbyte; /* XXX rounding */
276  s->f.delivery = s->delivery;
277  /* Fill Data */
278  memcpy(s->f.data.ptr, s->data, len);
279  s->len -= len;
280  /* Move remaining data to the front if applicable */
281  if (s->len) {
282  /* In principle this should all be fine because if we are sending
283  G.729 VAD, the next timestamp will take over anyawy */
284  memmove(s->data, s->data + len, s->len);
285  if (!ast_tvzero(s->delivery)) {
286  /* If we have delivery time, increment it, otherwise, leave it at 0 */
288  }
289  }
290  /* Return frame */
291  return &s->f;
292 }
format_t format
Definition: frame.c:87
union ast_frame_subclass subclass
Definition: frame.h:146
int offset
Definition: frame.h:156
void * ptr
Definition: frame.h:160
#define LOG_WARNING
Definition: logger.h:144
int ast_tvzero(const struct timeval t)
Returns true if the argument is 0,0.
Definition: time.h:100
static force_inline int ast_format_rate(format_t format)
Get the sample rate for a given format.
Definition: frame.h:809
format_t codec
Definition: frame.h:137
struct ast_frame f
Definition: frame.c:91
#define AST_FRIENDLY_OFFSET
Offset into a frame&#39;s data buffer.
Definition: frame.h:204
int datalen
Definition: frame.h:148
struct timeval ast_samp2tv(unsigned int _nsamp, unsigned int _rate)
Returns a timeval corresponding to the duration of n samples at rate r. Useful to convert samples to ...
Definition: time.h:191
char data[SMOOTHER_SIZE]
Definition: frame.c:93
int size
Definition: frame.c:86
float samplesperbyte
Definition: frame.c:89
int len
Definition: frame.c:96
#define AST_SMOOTHER_FLAG_G729
Definition: frame.h:427
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
struct timeval delivery
Definition: frame.c:92
struct timeval ast_tvadd(struct timeval a, struct timeval b)
Returns the sum of two timevals a + b.
Definition: utils.c:1587
void ast_log(int level, const char *file, int line, const char *function, const char *fmt,...)
Used for sending a log message This is the standard logger function. Probably the only way you will i...
Definition: logger.c:1207
struct ast_frame * opt
Definition: frame.c:95
struct timeval delivery
Definition: frame.h:162
Data structure associated with a single frame of data.
Definition: frame.h:142
char framedata[SMOOTHER_SIZE+AST_FRIENDLY_OFFSET]
Definition: frame.c:94
enum ast_frame_type frametype
Definition: frame.h:144
union ast_frame::@172 data
int flags
Definition: frame.c:88
int samples
Definition: frame.h:150
void ast_smoother_reconfigure ( struct ast_smoother s,
int  bytes 
)

Reconfigure an existing smoother to output a different number of bytes per frame.

Parameters
sthe smoother to reconfigure
bytesthe desired number of bytes per output frame
Returns
nothing

Definition at line 161 of file frame.c.

References ast_smoother::opt, ast_smoother::opt_needs_swap, ast_smoother::size, and smoother_frame_feed().

162 {
163  /* if there is no change, then nothing to do */
164  if (s->size == bytes) {
165  return;
166  }
167  /* set the new desired output size */
168  s->size = bytes;
169  /* if there is no 'optimized' frame in the smoother,
170  * then there is nothing left to do
171  */
172  if (!s->opt) {
173  return;
174  }
175  /* there is an 'optimized' frame here at the old size,
176  * but it must now be put into the buffer so the data
177  * can be extracted at the new size
178  */
180  s->opt = NULL;
181 }
static int smoother_frame_feed(struct ast_smoother *s, struct ast_frame *f, int swap)
Definition: frame.c:133
int size
Definition: frame.c:86
struct ast_frame * opt
Definition: frame.c:95
unsigned int opt_needs_swap
Definition: frame.c:90
void ast_smoother_reset ( struct ast_smoother s,
int  bytes 
)

Definition at line 155 of file frame.c.

References ast_smoother::size.

Referenced by ast_smoother_new().

156 {
157  memset(s, 0, sizeof(*s));
158  s->size = bytes;
159 }
int size
Definition: frame.c:86
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().

199 {
200  s->flags = flags;
201 }
unsigned int flags
Definition: frame.h:166
int flags
Definition: frame.c:88
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().

204 {
205  return (s->flags & flag);
206 }
int flags
Definition: frame.c:88
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().

557 {
558  int i;
559  unsigned short *dst_s = dst;
560  const unsigned short *src_s = src;
561 
562  for (i = 0; i < samples; i++)
563  dst_s[i] = (src_s[i]<<8) | (src_s[i]>>8);
564 }
const char * src
Definition: frame.h:158
int samples
Definition: frame.h:150
static void frame_cache_cleanup ( void *  data)
static

Definition at line 329 of file frame.c.

References ast_free, AST_LIST_REMOVE_HEAD, f, frames, and ast_frame_cache::list.

330 {
331  struct ast_frame_cache *frames = data;
332  struct ast_frame *f;
333 
334  while ((f = AST_LIST_REMOVE_HEAD(&frames->list, frame_list)))
335  ast_free(f);
336 
337  ast_free(frames);
338 }
struct ast_frames list
Definition: frame.c:69
static int frames
Definition: iax2-parser.c:49
#define AST_LIST_REMOVE_HEAD(head, field)
Removes and returns the head entry from a list.
Definition: linkedlists.h:818
#define ast_free(a)
Definition: astmm.h:97
static struct ast_format f[]
Definition: format_g726.c:181
Data structure associated with a single frame of data.
Definition: frame.h:142
static void framer_shutdown ( void  )
static

Definition at line 990 of file frame.c.

References ARRAY_LEN, and ast_cli_unregister_multiple().

Referenced by init_framer().

991 {
993 }
#define ARRAY_LEN(a)
Definition: isdn_lib.c:42
int ast_cli_unregister_multiple(struct ast_cli_entry *e, int len)
Unregister multiple commands.
Definition: cli.c:2177
static struct ast_cli_entry my_clis[]
Definition: frame.c:985
static int g723_len ( unsigned char  buf)
static

Definition at line 1323 of file frame.c.

References ast_log(), LOG_WARNING, type, TYPE_DONTSEND, TYPE_HIGH, TYPE_LOW, TYPE_MASK, and TYPE_SILENCE.

Referenced by g723_samples().

1324 {
1325  enum frame_type type = buf & TYPE_MASK;
1326 
1327  switch(type) {
1328  case TYPE_DONTSEND:
1329  return 0;
1330  break;
1331  case TYPE_SILENCE:
1332  return 4;
1333  break;
1334  case TYPE_HIGH:
1335  return 24;
1336  break;
1337  case TYPE_LOW:
1338  return 20;
1339  break;
1340  default:
1341  ast_log(LOG_WARNING, "Badly encoded frame (%u)\n", type);
1342  }
1343  return -1;
1344 }
#define LOG_WARNING
Definition: logger.h:144
frame_type
Definition: frame.c:76
#define TYPE_MASK
Definition: frame.c:83
void ast_log(int level, const char *file, int line, const char *function, const char *fmt,...)
Used for sending a log message This is the standard logger function. Probably the only way you will i...
Definition: logger.c:1207
static const char type[]
Definition: chan_nbs.c:57
Definition: frame.c:78
static int g723_samples ( unsigned char *  buf,
int  maxlen 
)
static

Definition at line 1346 of file frame.c.

References g723_len().

Referenced by ast_codec_get_samples().

1347 {
1348  int pos = 0;
1349  int samples = 0;
1350  int res;
1351  while(pos < maxlen) {
1352  res = g723_len(buf[pos]);
1353  if (res <= 0)
1354  break;
1355  samples += 240;
1356  pos += res;
1357  }
1358  return samples;
1359 }
static int g723_len(unsigned char buf)
Definition: frame.c:1323
int samples
Definition: frame.h:150
static unsigned char get_n_bits_at ( unsigned char *  data,
int  n,
int  bit 
)
static

Definition at line 1361 of file frame.c.

Referenced by speex_get_wb_sz_at(), and speex_samples().

1362 {
1363  int byte = bit / 8; /* byte containing first bit */
1364  int rem = 8 - (bit % 8); /* remaining bits in first byte */
1365  unsigned char ret = 0;
1366 
1367  if (n <= 0 || n > 8)
1368  return 0;
1369 
1370  if (rem < n) {
1371  ret = (data[byte] << (n - rem));
1372  ret |= (data[byte + 1] >> (8 - n + rem));
1373  } else {
1374  ret = (data[byte] >> (rem - n));
1375  }
1376 
1377  return (ret & (0xff >> (8 - n)));
1378 }
union ast_frame::@172 data
int init_framer ( void  )

Provided by frame.c

Definition at line 995 of file frame.c.

References ARRAY_LEN, ast_cli_register_multiple(), ast_register_atexit(), and framer_shutdown().

Referenced by main().

996 {
999  return 0;
1000 }
#define ARRAY_LEN(a)
Definition: isdn_lib.c:42
static void framer_shutdown(void)
Definition: frame.c:990
int ast_register_atexit(void(*func)(void))
Register a function to be executed before Asterisk exits.
Definition: asterisk.c:998
int ast_cli_register_multiple(struct ast_cli_entry *e, int len)
Register multiple commands.
Definition: cli.c:2167
static struct ast_cli_entry my_clis[]
Definition: frame.c:985
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.

741 {
742  format_t codec;
743  int i, found = 0;
744  long long type_punned_codec;
745 
746  switch (cmd) {
747  case CLI_INIT:
748  e->command = "core show codec";
749  e->usage =
750  "Usage: core show codec <number>\n"
751  " Displays codec mapping\n";
752  return NULL;
753  case CLI_GENERATE:
754  return NULL;
755  }
756 
757  if (a->argc != 4)
758  return CLI_SHOWUSAGE;
759 
760  if (sscanf(a->argv[3], "%30lld", &type_punned_codec) != 1) {
761  return CLI_SHOWUSAGE;
762  }
763  codec = type_punned_codec;
764 
765  for (i = 0; i < 63; i++)
766  if (codec & (1LL << i)) {
767  found = 1;
768  ast_cli(a->fd, "%11llu (1 << %2d) %s\n", 1ULL << i, i, ast_codec2str(1LL << i));
769  }
770 
771  if (!found)
772  ast_cli(a->fd, "Codec %lld not found\n", (long long) codec);
773 
774  return CLI_SUCCESS;
775 }
const int argc
Definition: cli.h:154
Definition: cli.h:146
void ast_cli(int fd, const char *fmt,...)
Definition: cli.c:105
const int fd
Definition: cli.h:153
const char *const * argv
Definition: cli.h:155
int64_t format_t
Definition: frame_defs.h:32
#define CLI_SHOWUSAGE
Definition: cli.h:44
char * command
Definition: cli.h:180
const char * usage
Definition: cli.h:171
#define CLI_SUCCESS
Definition: cli.h:43
char * ast_codec2str(format_t codec)
Get a name from a format Gets a name from a format.
Definition: frame.c:660
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_codec2str(), AST_FORMAT_AUDIO_MASK, AST_FORMAT_TEXT_MASK, AST_FORMAT_VIDEO_MASK, ast_getformatname(), ast_opt_dont_warn, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, ast_cli_args::fd, and ast_cli_entry::usage.

674 {
675  int i, found=0;
676  char hex[25];
677 
678  switch (cmd) {
679  case CLI_INIT:
680  e->command = "core show codecs [audio|video|image|text]";
681  e->usage =
682  "Usage: core show codecs [audio|video|image|text]\n"
683  " Displays codec mapping\n";
684  return NULL;
685  case CLI_GENERATE:
686  return NULL;
687  }
688 
689  if ((a->argc < 3) || (a->argc > 4))
690  return CLI_SHOWUSAGE;
691 
692  if (!ast_opt_dont_warn)
693  ast_cli(a->fd, "Disclaimer: this command is for informational purposes only.\n"
694  "\tIt does not indicate anything about your configuration.\n");
695 
696  ast_cli(a->fd, "%19s %9s %20s TYPE %8s %s\n","INT","BINARY","HEX","NAME","DESCRIPTION");
697  ast_cli(a->fd, "-----------------------------------------------------------------------------------\n");
698  for (i = 0; i < 63; i++) {
699 
700  if (a->argc == 4) {
701  if (!strcasecmp(a->argv[3], "audio")) {
702  if (!((1LL << i) & AST_FORMAT_AUDIO_MASK)) {
703  continue;
704  }
705  } else if (!strcasecmp(a->argv[3], "video")) {
706  if (!((1LL << i) & AST_FORMAT_VIDEO_MASK)) {
707  continue;
708  }
709  } else if (!strcasecmp(a->argv[3], "image")) {
710  if (i != 16 && i != 17) {
711  continue;
712  }
713  } else if (!strcasecmp(a->argv[3], "text")) {
714  if (!((1LL << i) & AST_FORMAT_TEXT_MASK)) {
715  continue;
716  }
717  } else {
718  continue;
719  }
720  }
721 
722  snprintf(hex, sizeof(hex), "(0x%llx)", 1ULL << i);
723  ast_cli(a->fd, "%19llu (1 << %2d) %20s %5s %8s (%s)\n", 1ULL << i, i, hex,
724  ((1LL << i) & AST_FORMAT_AUDIO_MASK) ? "audio" :
725  i == 16 || i == 17 ? "image" :
726  ((1LL << i) & AST_FORMAT_VIDEO_MASK) ? "video" :
727  ((1LL << i) & AST_FORMAT_TEXT_MASK) ? "text" :
728  "(unk)",
729  ast_getformatname(1LL << i), ast_codec2str(1LL << i));
730  found = 1;
731  }
732 
733  if (!found) {
734  return CLI_SHOWUSAGE;
735  } else {
736  return CLI_SUCCESS;
737  }
738 }
const int argc
Definition: cli.h:154
Definition: cli.h:146
void ast_cli(int fd, const char *fmt,...)
Definition: cli.c:105
#define ast_opt_dont_warn
Definition: options.h:121
const int fd
Definition: cli.h:153
#define AST_FORMAT_TEXT_MASK
Definition: frame.h:297
const char *const * argv
Definition: cli.h:155
char * ast_getformatname(format_t format)
Get the name of a format.
Definition: frame.c:578
#define CLI_SHOWUSAGE
Definition: cli.h:44
#define AST_FORMAT_VIDEO_MASK
Definition: frame.h:290
char * command
Definition: cli.h:180
#define AST_FORMAT_AUDIO_MASK
Definition: frame.h:274
const char * usage
Definition: cli.h:171
#define CLI_SUCCESS
Definition: cli.h:43
char * ast_codec2str(format_t codec)
Get a name from a format Gets a name from a format.
Definition: frame.c:660
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_frame::data, ast_frame::datalen, ast_smoother::delivery, ast_frame::delivery, ast_smoother::flags, ast_smoother::len, LOG_NOTICE, ast_frame::ptr, and ast_frame::samples.

Referenced by __ast_smoother_feed(), and ast_smoother_reconfigure().

134 {
135  if (s->flags & AST_SMOOTHER_FLAG_G729) {
136  if (s->len % 10) {
137  ast_log(LOG_NOTICE, "Dropping extra frame of G.729 since we already have a VAD frame at the end\n");
138  return 0;
139  }
140  }
141  if (swap) {
142  ast_swapcopy_samples(s->data + s->len, f->data.ptr, f->samples);
143  } else {
144  memcpy(s->data + s->len, f->data.ptr, f->datalen);
145  }
146  /* If either side is empty, reset the delivery time */
147  if (!s->len || ast_tvzero(f->delivery) || ast_tvzero(s->delivery)) { /* XXX really ? */
148  s->delivery = f->delivery;
149  }
150  s->len += f->datalen;
151 
152  return 0;
153 }
void * ptr
Definition: frame.h:160
int ast_tvzero(const struct timeval t)
Returns true if the argument is 0,0.
Definition: time.h:100
int datalen
Definition: frame.h:148
char data[SMOOTHER_SIZE]
Definition: frame.c:93
int len
Definition: frame.c:96
#define AST_SMOOTHER_FLAG_G729
Definition: frame.h:427
struct timeval delivery
Definition: frame.c:92
void ast_log(int level, const char *file, int line, const char *function, const char *fmt,...)
Used for sending a log message This is the standard logger function. Probably the only way you will i...
Definition: logger.c:1207
#define LOG_NOTICE
Definition: logger.h:133
struct timeval delivery
Definition: frame.h:162
void ast_swapcopy_samples(void *dst, const void *src, int samples)
Definition: frame.c:556
union ast_frame::@172 data
int flags
Definition: frame.c:88
int samples
Definition: frame.h:150
static int speex_get_wb_sz_at ( unsigned char *  data,
int  len,
int  bit 
)
static

Definition at line 1380 of file frame.c.

References ast_log(), get_n_bits_at(), and LOG_WARNING.

Referenced by speex_samples().

1381 {
1382  static const int SpeexWBSubModeSz[] = {
1383  4, 36, 112, 192,
1384  352, 0, 0, 0 };
1385  int off = bit;
1386  unsigned char c;
1387 
1388  /* skip up to two wideband frames */
1389  if (((len * 8 - off) >= 5) &&
1390  get_n_bits_at(data, 1, off)) {
1391  c = get_n_bits_at(data, 3, off + 1);
1392  off += SpeexWBSubModeSz[c];
1393 
1394  if (((len * 8 - off) >= 5) &&
1395  get_n_bits_at(data, 1, off)) {
1396  c = get_n_bits_at(data, 3, off + 1);
1397  off += SpeexWBSubModeSz[c];
1398 
1399  if (((len * 8 - off) >= 5) &&
1400  get_n_bits_at(data, 1, off)) {
1401  ast_log(LOG_WARNING, "Encountered corrupt speex frame; too many wideband frames in a row.\n");
1402  return -1;
1403  }
1404  }
1405 
1406  }
1407  return off - bit;
1408 }
#define LOG_WARNING
Definition: logger.h:144
static unsigned char get_n_bits_at(unsigned char *data, int n, int bit)
Definition: frame.c:1361
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
void ast_log(int level, const char *file, int line, const char *function, const char *fmt,...)
Used for sending a log message This is the standard logger function. Probably the only way you will i...
Definition: logger.c:1207
union ast_frame::@172 data
static int speex_samples ( unsigned char *  data,
int  len 
)
static

Definition at line 1410 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().

1411 {
1412  static const int SpeexSubModeSz[] = {
1413  5, 43, 119, 160,
1414  220, 300, 364, 492,
1415  79, 0, 0, 0,
1416  0, 0, 0, 0 };
1417  static const int SpeexInBandSz[] = {
1418  1, 1, 4, 4,
1419  4, 4, 4, 4,
1420  8, 8, 16, 16,
1421  32, 32, 64, 64 };
1422  int bit = 0;
1423  int cnt = 0;
1424  int off;
1425  unsigned char c;
1426 
1427  while ((len * 8 - bit) >= 5) {
1428  /* skip wideband frames */
1429  off = speex_get_wb_sz_at(data, len, bit);
1430  if (off < 0) {
1431  ast_log(LOG_WARNING, "Had error while reading wideband frames for speex samples\n");
1432  break;
1433  }
1434  bit += off;
1435 
1436  if ((len * 8 - bit) < 5)
1437  break;
1438 
1439  /* get control bits */
1440  c = get_n_bits_at(data, 5, bit);
1441  bit += 5;
1442 
1443  if (c == 15) {
1444  /* terminator */
1445  break;
1446  } else if (c == 14) {
1447  /* in-band signal; next 4 bits contain signal id */
1448  c = get_n_bits_at(data, 4, bit);
1449  bit += 4;
1450  bit += SpeexInBandSz[c];
1451  } else if (c == 13) {
1452  /* user in-band; next 4 bits contain msg len */
1453  c = get_n_bits_at(data, 4, bit);
1454  bit += 4;
1455  /* after which it's 5-bit signal id + c bytes of data */
1456  bit += 5 + c * 8;
1457  } else if (c > 8) {
1458  /* unknown */
1459  ast_log(LOG_WARNING, "Unknown speex control frame %d\n", c);
1460  break;
1461  } else {
1462  /* skip number bits for submode (less the 5 control bits) */
1463  bit += SpeexSubModeSz[c] - 5;
1464  cnt += 160; /* new frame */
1465  }
1466  }
1467  return cnt;
1468 }
#define LOG_WARNING
Definition: logger.h:144
static unsigned char get_n_bits_at(unsigned char *data, int n, int bit)
Definition: frame.c:1361
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
void ast_log(int level, const char *file, int line, const char *function, const char *fmt,...)
Used for sending a log message This is the standard logger function. Probably the only way you will i...
Definition: logger.c:1207
static int speex_get_wb_sz_at(unsigned char *data, int len, int bit)
Definition: frame.c:1380
union ast_frame::@172 data

Variable Documentation

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_get_format_list().

struct ast_threadstorage frame_cache = { .once = PTHREAD_ONCE_INIT , .key_init = __init_frame_cache , .custom_init = NULL , }
static

Definition at line 51 of file frame.c.

Referenced by __frame_free(), ast_frame_header_new(), and ast_frdup().

struct ast_cli_entry my_clis[]
static
Initial value:
= {
AST_CLI_DEFINE(show_codecs, "Displays a list of codecs"),
AST_CLI_DEFINE(show_codec_n, "Shows a specific codec"),
}
#define AST_CLI_DEFINE(fn, txt,...)
Definition: cli.h:191
static char * show_codecs(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
Definition: frame.c:673
static char * show_codec_n(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
Definition: frame.c:740

Definition at line 985 of file frame.c.