#include "asterisk.h"
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include "asterisk/lock.h"
#include "asterisk/frame.h"
#include "asterisk/logger.h"
#include "asterisk/options.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 dependency graph for frame.c:
Go to the source code of this file.
Data Structures | |
struct | ast_codec_alias_table |
struct | ast_frame_cache |
struct | ast_smoother |
Defines | |
#define | FRAME_CACHE_MAX_SIZE 10 |
Maximum ast_frame cache size. | |
#define | SMOOTHER_SIZE 8000 |
#define | TYPE_MASK 0x3 |
Enumerations | |
enum | frame_type { TYPE_HIGH, TYPE_LOW, TYPE_SILENCE, TYPE_DONTSEND } |
Functions | |
int | __ast_smoother_feed (struct ast_smoother *s, struct ast_frame *f, int swap) |
char * | ast_codec2str (int codec) |
Get a name from a format Gets a name from a format. | |
int | ast_codec_choose (struct ast_codec_pref *pref, int formats, int find_best) |
Select the best audio format according to preference list from supplied options. If "find_best" is non-zero then if nothing is found, the "Best" format of the format list is selected, otherwise 0 is returned. | |
int | ast_codec_get_len (int format, int samples) |
Returns the number of bytes for the number of samples of the given format. | |
int | ast_codec_get_samples (struct ast_frame *f) |
Returns the number of samples contained in the frame. | |
int | ast_codec_pref_append (struct ast_codec_pref *pref, int format) |
Append a audio codec to a preference list, removing it first if it was already there. | |
void | ast_codec_pref_convert (struct ast_codec_pref *pref, char *buf, size_t size, int right) |
Shift an audio codec preference list up or down 65 bytes so that it becomes an ASCII string. | |
ast_format_list | ast_codec_pref_getsize (struct ast_codec_pref *pref, int format) |
Get packet size for codec. | |
int | ast_codec_pref_index (struct ast_codec_pref *pref, int index) |
Codec located at a particular place in the preference index See Audio Codec Preferences. | |
void | ast_codec_pref_prepend (struct ast_codec_pref *pref, int format, int only_if_existing) |
Prepend an audio codec to a preference list, removing it first if it was already there. | |
void | ast_codec_pref_remove (struct ast_codec_pref *pref, int format) |
Remove audio a codec from a preference list. | |
int | ast_codec_pref_setsize (struct ast_codec_pref *pref, int format, int framems) |
Set packet size for codec. | |
int | ast_codec_pref_string (struct ast_codec_pref *pref, char *buf, size_t size) |
Dump audio codec preference list into a string. | |
static const char * | ast_expand_codec_alias (const char *in) |
int | ast_frame_adjust_volume (struct ast_frame *f, int adjustment) |
Adjusts the volume of the audio samples contained in a frame. | |
void | ast_frame_dump (const char *name, struct ast_frame *f, char *prefix) |
void | ast_frame_free (struct ast_frame *fr, int cache) |
Requests a frame to be allocated Frees a frame. | |
static struct ast_frame * | ast_frame_header_new (void) |
int | ast_frame_slinear_sum (struct ast_frame *f1, struct ast_frame *f2) |
Sums two frames of audio samples. | |
ast_frame * | ast_frdup (const struct ast_frame *f) |
Copies a frame. | |
ast_frame * | ast_frisolate (struct ast_frame *fr) |
Makes a frame independent of any static storage. | |
ast_format_list * | ast_get_format_list (size_t *size) |
ast_format_list * | ast_get_format_list_index (int index) |
int | ast_getformatbyname (const char *name) |
Gets a format from a name. | |
char * | ast_getformatname (int format) |
Get the name of a format. | |
char * | ast_getformatname_multiple (char *buf, size_t size, int format) |
Get the names of a set of formats. | |
AST_LIST_HEAD_NOLOCK (ast_frames, ast_frame) | |
This is just so ast_frames, a list head struct for holding a list of ast_frame structures, is defined. | |
void | ast_parse_allow_disallow (struct ast_codec_pref *pref, int *mask, const char *list, int allowing) |
Parse an "allow" or "deny" line in a channel or device configuration and update the capabilities mask and pref if provided. Video codecs are not added to codec preference lists, since we can not transcode. | |
void | ast_smoother_free (struct ast_smoother *s) |
int | ast_smoother_get_flags (struct ast_smoother *s) |
ast_smoother * | ast_smoother_new (int size) |
ast_frame * | ast_smoother_read (struct ast_smoother *s) |
void | ast_smoother_reset (struct ast_smoother *s, int size) |
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) |
AST_THREADSTORAGE_CUSTOM (frame_cache, frame_cache_init, frame_cache_cleanup) | |
A per-thread cache of frame headers. | |
static void | frame_cache_cleanup (void *data) |
static int | g723_len (unsigned char buf) |
static int | g723_samples (unsigned char *buf, int maxlen) |
static unsigned char | get_n_bits_at (unsigned char *data, int n, int bit) |
int | init_framer (void) |
static int | show_codec_n (int fd, int argc, char *argv[]) |
static int | show_codec_n_deprecated (int fd, int argc, char *argv[]) |
static int | show_codecs (int fd, int argc, char *argv[]) |
static int | show_codecs_deprecated (int fd, int argc, char *argv[]) |
static int | speex_get_wb_sz_at (unsigned char *data, int len, int bit) |
static int | speex_samples (unsigned char *data, int len) |
Variables | |
static struct ast_format_list | AST_FORMAT_LIST [] |
Definition of supported media formats (codecs). | |
ast_frame | ast_null_frame = { AST_FRAME_NULL, } |
static struct ast_cli_entry | cli_show_audio_codecs |
static struct ast_cli_entry | cli_show_codec |
static struct ast_cli_entry | cli_show_codecs |
static struct ast_cli_entry | cli_show_image_codecs |
static struct ast_cli_entry | cli_show_video_codecs |
static char | frame_show_codec_n_usage [] |
static char | frame_show_codecs_usage [] |
static struct ast_cli_entry | my_clis [] |
Definition in file frame.c.
#define FRAME_CACHE_MAX_SIZE 10 |
Maximum ast_frame cache size.
In most cases where the frame header cache will be useful, the size of the cache will stay very small. However, it is not always the case that the same thread that allocates the frame will be the one freeing them, so sometimes a thread will never have any frames in its cache, or the cache will never be pulled from. For the latter case, we limit the maximum size.
Definition at line 69 of file frame.c.
Referenced by ast_frame_free().
#define SMOOTHER_SIZE 8000 |
#define TYPE_MASK 0x3 |
enum frame_type |
Definition at line 83 of file frame.c.
00083 { 00084 TYPE_HIGH, /* 0x0 */ 00085 TYPE_LOW, /* 0x1 */ 00086 TYPE_SILENCE, /* 0x2 */ 00087 TYPE_DONTSEND /* 0x3 */ 00088 };
int __ast_smoother_feed | ( | struct ast_smoother * | s, | |
struct ast_frame * | f, | |||
int | swap | |||
) |
Definition at line 172 of file frame.c.
References AST_FRAME_VOICE, ast_log(), AST_MIN_OFFSET, AST_SMOOTHER_FLAG_G729, ast_swapcopy_samples(), f, LOG_NOTICE, LOG_WARNING, s, and SMOOTHER_SIZE.
00173 { 00174 if (f->frametype != AST_FRAME_VOICE) { 00175 ast_log(LOG_WARNING, "Huh? Can't smooth a non-voice frame!\n"); 00176 return -1; 00177 } 00178 if (!s->format) { 00179 s->format = f->subclass; 00180 s->samplesperbyte = (float)f->samples / (float)f->datalen; 00181 } else if (s->format != f->subclass) { 00182 ast_log(LOG_WARNING, "Smoother was working on %d format frames, now trying to feed %d?\n", s->format, f->subclass); 00183 return -1; 00184 } 00185 if (s->len + f->datalen > SMOOTHER_SIZE) { 00186 ast_log(LOG_WARNING, "Out of smoother space\n"); 00187 return -1; 00188 } 00189 if (((f->datalen == s->size) || ((f->datalen < 10) && (s->flags & AST_SMOOTHER_FLAG_G729))) 00190 && !s->opt && (f->offset >= AST_MIN_OFFSET)) { 00191 if (!s->len) { 00192 /* Optimize by sending the frame we just got 00193 on the next read, thus eliminating the douple 00194 copy */ 00195 if (swap) 00196 ast_swapcopy_samples(f->data, f->data, f->samples); 00197 s->opt = f; 00198 return 0; 00199 } 00200 } 00201 if (s->flags & AST_SMOOTHER_FLAG_G729) { 00202 if (s->len % 10) { 00203 ast_log(LOG_NOTICE, "Dropping extra frame of G.729 since we already have a VAD frame at the end\n"); 00204 return 0; 00205 } 00206 } 00207 if (swap) 00208 ast_swapcopy_samples(s->data+s->len, f->data, f->samples); 00209 else 00210 memcpy(s->data + s->len, f->data, f->datalen); 00211 /* If either side is empty, reset the delivery time */ 00212 if (!s->len || ast_tvzero(f->delivery) || ast_tvzero(s->delivery)) /* XXX really ? */ 00213 s->delivery = f->delivery; 00214 s->len += f->datalen; 00215 return 0; 00216 }
char* ast_codec2str | ( | int | codec | ) |
Get a name from a format Gets a name from a format.
codec | codec number (1,2,4,8,16,etc.) |
Definition at line 600 of file frame.c.
References AST_FORMAT_LIST, and desc.
Referenced by moh_alloc(), show_codec_n(), show_codec_n_deprecated(), show_codecs(), and show_codecs_deprecated().
00601 { 00602 int x; 00603 char *ret = "unknown"; 00604 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 00605 if(AST_FORMAT_LIST[x].visible && AST_FORMAT_LIST[x].bits == codec) { 00606 ret = AST_FORMAT_LIST[x].desc; 00607 break; 00608 } 00609 } 00610 return ret; 00611 }
int ast_codec_choose | ( | struct ast_codec_pref * | pref, | |
int | formats, | |||
int | find_best | |||
) |
Select the best audio format according to preference list from supplied options. If "find_best" is non-zero then if nothing is found, the "Best" format of the format list is selected, otherwise 0 is returned.
Definition at line 1280 of file frame.c.
References ast_best_codec(), AST_FORMAT_AUDIO_MASK, AST_FORMAT_LIST, ast_log(), ast_format_list::bits, LOG_DEBUG, option_debug, and ast_codec_pref::order.
Referenced by __oh323_new(), gtalk_new(), process_sdp(), sip_new(), and socket_process().
01281 { 01282 int x, ret = 0, slot; 01283 01284 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01285 slot = pref->order[x]; 01286 01287 if (!slot) 01288 break; 01289 if (formats & AST_FORMAT_LIST[slot-1].bits) { 01290 ret = AST_FORMAT_LIST[slot-1].bits; 01291 break; 01292 } 01293 } 01294 if(ret & AST_FORMAT_AUDIO_MASK) 01295 return ret; 01296 01297 if (option_debug > 3) 01298 ast_log(LOG_DEBUG, "Could not find preferred codec - %s\n", find_best ? "Going for the best codec" : "Returning zero codec"); 01299 01300 return find_best ? ast_best_codec(formats) : 0; 01301 }
int ast_codec_get_len | ( | int | format, | |
int | samples | |||
) |
Returns the number of bytes for the number of samples of the given format.
Definition at line 1539 of file frame.c.
References AST_FORMAT_ADPCM, AST_FORMAT_ALAW, AST_FORMAT_G722, AST_FORMAT_G726, AST_FORMAT_G726_AAL2, AST_FORMAT_G729A, AST_FORMAT_GSM, AST_FORMAT_ILBC, AST_FORMAT_SLINEAR, AST_FORMAT_ULAW, ast_getformatname(), ast_log(), len, and LOG_WARNING.
Referenced by moh_generate(), and monmp3thread().
01540 { 01541 int len = 0; 01542 01543 /* XXX Still need speex, g723, and lpc10 XXX */ 01544 switch(format) { 01545 case AST_FORMAT_ILBC: 01546 len = (samples / 240) * 50; 01547 break; 01548 case AST_FORMAT_GSM: 01549 len = (samples / 160) * 33; 01550 break; 01551 case AST_FORMAT_G729A: 01552 len = samples / 8; 01553 break; 01554 case AST_FORMAT_SLINEAR: 01555 len = samples * 2; 01556 break; 01557 case AST_FORMAT_ULAW: 01558 case AST_FORMAT_ALAW: 01559 len = samples; 01560 break; 01561 case AST_FORMAT_G722: 01562 case AST_FORMAT_ADPCM: 01563 case AST_FORMAT_G726: 01564 case AST_FORMAT_G726_AAL2: 01565 len = samples / 2; 01566 break; 01567 default: 01568 ast_log(LOG_WARNING, "Unable to calculate sample length for format %s\n", ast_getformatname(format)); 01569 } 01570 01571 return len; 01572 }
int ast_codec_get_samples | ( | struct ast_frame * | f | ) |
Returns the number of samples contained in the frame.
Definition at line 1496 of file frame.c.
References AST_FORMAT_ADPCM, AST_FORMAT_ALAW, 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_SLINEAR, AST_FORMAT_SPEEX, AST_FORMAT_ULAW, ast_getformatname(), ast_log(), f, g723_samples(), LOG_WARNING, and speex_samples().
Referenced by ast_rtp_read(), isAnsweringMachine(), moh_generate(), schedule_delivery(), and socket_process().
01497 { 01498 int samples=0; 01499 switch(f->subclass) { 01500 case AST_FORMAT_SPEEX: 01501 samples = speex_samples(f->data, f->datalen); 01502 break; 01503 case AST_FORMAT_G723_1: 01504 samples = g723_samples(f->data, f->datalen); 01505 break; 01506 case AST_FORMAT_ILBC: 01507 samples = 240 * (f->datalen / 50); 01508 break; 01509 case AST_FORMAT_GSM: 01510 samples = 160 * (f->datalen / 33); 01511 break; 01512 case AST_FORMAT_G729A: 01513 samples = f->datalen * 8; 01514 break; 01515 case AST_FORMAT_SLINEAR: 01516 samples = f->datalen / 2; 01517 break; 01518 case AST_FORMAT_LPC10: 01519 /* assumes that the RTP packet contains one LPC10 frame */ 01520 samples = 22 * 8; 01521 samples += (((char *)(f->data))[7] & 0x1) * 8; 01522 break; 01523 case AST_FORMAT_ULAW: 01524 case AST_FORMAT_ALAW: 01525 samples = f->datalen; 01526 break; 01527 case AST_FORMAT_G722: 01528 case AST_FORMAT_ADPCM: 01529 case AST_FORMAT_G726: 01530 case AST_FORMAT_G726_AAL2: 01531 samples = f->datalen * 2; 01532 break; 01533 default: 01534 ast_log(LOG_WARNING, "Unable to calculate samples for format %s\n", ast_getformatname(f->subclass)); 01535 } 01536 return samples; 01537 }
int ast_codec_pref_append | ( | struct ast_codec_pref * | pref, | |
int | format | |||
) |
Append a audio codec to a preference list, removing it first if it was already there.
Definition at line 1139 of file frame.c.
References ast_codec_pref_remove(), AST_FORMAT_LIST, and ast_codec_pref::order.
Referenced by ast_parse_allow_disallow().
01140 { 01141 int x, newindex = 0; 01142 01143 ast_codec_pref_remove(pref, format); 01144 01145 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01146 if(AST_FORMAT_LIST[x].bits == format) { 01147 newindex = x + 1; 01148 break; 01149 } 01150 } 01151 01152 if(newindex) { 01153 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01154 if(!pref->order[x]) { 01155 pref->order[x] = newindex; 01156 break; 01157 } 01158 } 01159 } 01160 01161 return x; 01162 }
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.
Definition at line 1041 of file frame.c.
References ast_codec_pref::order.
Referenced by check_access(), create_addr(), dump_prefs(), and socket_process().
01042 { 01043 int x, differential = (int) 'A', mem; 01044 char *from, *to; 01045 01046 if(right) { 01047 from = pref->order; 01048 to = buf; 01049 mem = size; 01050 } else { 01051 to = pref->order; 01052 from = buf; 01053 mem = 32; 01054 } 01055 01056 memset(to, 0, mem); 01057 for (x = 0; x < 32 ; x++) { 01058 if(!from[x]) 01059 break; 01060 to[x] = right ? (from[x] + differential) : (from[x] - differential); 01061 } 01062 }
struct ast_format_list ast_codec_pref_getsize | ( | struct ast_codec_pref * | pref, | |
int | format | |||
) |
Get packet size for codec.
Definition at line 1241 of file frame.c.
References AST_FORMAT_LIST, ast_format_list::bits, fmt, and format.
Referenced by add_codec_to_sdp(), ast_rtp_bridge(), ast_rtp_write(), handle_open_receive_channel_ack_message(), and transmit_connect().
01242 { 01243 int x, index = -1, framems = 0; 01244 struct ast_format_list fmt = {0}; 01245 01246 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01247 if(AST_FORMAT_LIST[x].bits == format) { 01248 fmt = AST_FORMAT_LIST[x]; 01249 index = x; 01250 break; 01251 } 01252 } 01253 01254 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01255 if(pref->order[x] == (index + 1)) { 01256 framems = pref->framing[x]; 01257 break; 01258 } 01259 } 01260 01261 /* size validation */ 01262 if(!framems) 01263 framems = AST_FORMAT_LIST[index].def_ms; 01264 01265 if(AST_FORMAT_LIST[index].inc_ms && framems % AST_FORMAT_LIST[index].inc_ms) /* avoid division by zero */ 01266 framems -= framems % AST_FORMAT_LIST[index].inc_ms; 01267 01268 if(framems < AST_FORMAT_LIST[index].min_ms) 01269 framems = AST_FORMAT_LIST[index].min_ms; 01270 01271 if(framems > AST_FORMAT_LIST[index].max_ms) 01272 framems = AST_FORMAT_LIST[index].max_ms; 01273 01274 fmt.cur_ms = framems; 01275 01276 return fmt; 01277 }
int ast_codec_pref_index | ( | struct ast_codec_pref * | pref, | |
int | index | |||
) |
Codec located at a particular place in the preference index See Audio Codec Preferences.
Definition at line 1099 of file frame.c.
References AST_FORMAT_LIST, ast_format_list::bits, and ast_codec_pref::order.
Referenced by _sip_show_peer(), add_sdp(), ast_codec_pref_string(), function_iaxpeer(), function_sippeer(), gtalk_invite(), iax2_show_peer(), print_codec_to_cli(), and socket_process().
01100 { 01101 int slot = 0; 01102 01103 01104 if((index >= 0) && (index < sizeof(pref->order))) { 01105 slot = pref->order[index]; 01106 } 01107 01108 return slot ? AST_FORMAT_LIST[slot-1].bits : 0; 01109 }
void ast_codec_pref_prepend | ( | struct ast_codec_pref * | pref, | |
int | format, | |||
int | only_if_existing | |||
) |
Prepend an audio codec to a preference list, removing it first if it was already there.
Definition at line 1165 of file frame.c.
References ARRAY_LEN, AST_FORMAT_LIST, ast_codec_pref::framing, and ast_codec_pref::order.
Referenced by create_addr().
01166 { 01167 int x, newindex = 0; 01168 01169 /* First step is to get the codecs "index number" */ 01170 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01171 if (AST_FORMAT_LIST[x].bits == format) { 01172 newindex = x + 1; 01173 break; 01174 } 01175 } 01176 /* Done if its unknown */ 01177 if (!newindex) 01178 return; 01179 01180 /* Now find any existing occurrence, or the end */ 01181 for (x = 0; x < 32; x++) { 01182 if (!pref->order[x] || pref->order[x] == newindex) 01183 break; 01184 } 01185 01186 if (only_if_existing && !pref->order[x]) 01187 return; 01188 01189 /* Move down to make space to insert - either all the way to the end, 01190 or as far as the existing location (which will be overwritten) */ 01191 for (; x > 0; x--) { 01192 pref->order[x] = pref->order[x - 1]; 01193 pref->framing[x] = pref->framing[x - 1]; 01194 } 01195 01196 /* And insert the new entry */ 01197 pref->order[0] = newindex; 01198 pref->framing[0] = 0; /* ? */ 01199 }
void ast_codec_pref_remove | ( | struct ast_codec_pref * | pref, | |
int | format | |||
) |
Remove audio a codec from a preference list.
Definition at line 1112 of file frame.c.
References AST_FORMAT_LIST, and ast_codec_pref::order.
Referenced by ast_codec_pref_append(), and ast_parse_allow_disallow().
01113 { 01114 struct ast_codec_pref oldorder; 01115 int x, y = 0; 01116 int slot; 01117 int size; 01118 01119 if(!pref->order[0]) 01120 return; 01121 01122 memcpy(&oldorder, pref, sizeof(oldorder)); 01123 memset(pref, 0, sizeof(*pref)); 01124 01125 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01126 slot = oldorder.order[x]; 01127 size = oldorder.framing[x]; 01128 if(! slot) 01129 break; 01130 if(AST_FORMAT_LIST[slot-1].bits != format) { 01131 pref->order[y] = slot; 01132 pref->framing[y++] = size; 01133 } 01134 } 01135 01136 }
int ast_codec_pref_setsize | ( | struct ast_codec_pref * | pref, | |
int | format, | |||
int | framems | |||
) |
Set packet size for codec.
Definition at line 1202 of file frame.c.
References AST_FORMAT_LIST, ast_codec_pref::framing, and ast_codec_pref::order.
Referenced by ast_parse_allow_disallow(), and process_sdp().
01203 { 01204 int x, index = -1; 01205 01206 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01207 if(AST_FORMAT_LIST[x].bits == format) { 01208 index = x; 01209 break; 01210 } 01211 } 01212 01213 if(index < 0) 01214 return -1; 01215 01216 /* size validation */ 01217 if(!framems) 01218 framems = AST_FORMAT_LIST[index].def_ms; 01219 01220 if(AST_FORMAT_LIST[index].inc_ms && framems % AST_FORMAT_LIST[index].inc_ms) /* avoid division by zero */ 01221 framems -= framems % AST_FORMAT_LIST[index].inc_ms; 01222 01223 if(framems < AST_FORMAT_LIST[index].min_ms) 01224 framems = AST_FORMAT_LIST[index].min_ms; 01225 01226 if(framems > AST_FORMAT_LIST[index].max_ms) 01227 framems = AST_FORMAT_LIST[index].max_ms; 01228 01229 01230 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01231 if(pref->order[x] == (index + 1)) { 01232 pref->framing[x] = framems; 01233 break; 01234 } 01235 } 01236 01237 return x; 01238 }
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 1064 of file frame.c.
References ast_codec_pref_index(), and ast_getformatname().
Referenced by dump_prefs(), and socket_process().
01065 { 01066 int x, codec; 01067 size_t total_len, slen; 01068 char *formatname; 01069 01070 memset(buf,0,size); 01071 total_len = size; 01072 buf[0] = '('; 01073 total_len--; 01074 for(x = 0; x < 32 ; x++) { 01075 if(total_len <= 0) 01076 break; 01077 if(!(codec = ast_codec_pref_index(pref,x))) 01078 break; 01079 if((formatname = ast_getformatname(codec))) { 01080 slen = strlen(formatname); 01081 if(slen > total_len) 01082 break; 01083 strncat(buf, formatname, total_len - 1); /* safe */ 01084 total_len -= slen; 01085 } 01086 if(total_len && x < 31 && ast_codec_pref_index(pref , x + 1)) { 01087 strncat(buf, "|", total_len - 1); /* safe */ 01088 total_len--; 01089 } 01090 } 01091 if(total_len) { 01092 strncat(buf, ")", total_len - 1); /* safe */ 01093 total_len--; 01094 } 01095 01096 return size - total_len; 01097 }
static const char* ast_expand_codec_alias | ( | const char * | in | ) | [static] |
Definition at line 571 of file frame.c.
Referenced by ast_getformatbyname().
00572 { 00573 int x; 00574 00575 for (x = 0; x < sizeof(ast_codec_alias_table) / sizeof(ast_codec_alias_table[0]); x++) { 00576 if(!strcmp(in,ast_codec_alias_table[x].alias)) 00577 return ast_codec_alias_table[x].realname; 00578 } 00579 return in; 00580 }
int ast_frame_adjust_volume | ( | struct ast_frame * | f, | |
int | adjustment | |||
) |
Adjusts the volume of the audio samples contained in a frame.
f | The frame containing the samples (must be AST_FRAME_VOICE and AST_FORMAT_SLINEAR) | |
adjustment | The number of dB to adjust up or down. |
Definition at line 1574 of file frame.c.
References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_slinear_saturated_divide(), ast_slinear_saturated_multiply(), and f.
Referenced by audiohook_read_frame_single(), and conf_run().
01575 { 01576 int count; 01577 short *fdata = f->data; 01578 short adjust_value = abs(adjustment); 01579 01580 if ((f->frametype != AST_FRAME_VOICE) || (f->subclass != AST_FORMAT_SLINEAR)) 01581 return -1; 01582 01583 if (!adjustment) 01584 return 0; 01585 01586 for (count = 0; count < f->samples; count++) { 01587 if (adjustment > 0) { 01588 ast_slinear_saturated_multiply(&fdata[count], &adjust_value); 01589 } else if (adjustment < 0) { 01590 ast_slinear_saturated_divide(&fdata[count], &adjust_value); 01591 } 01592 } 01593 01594 return 0; 01595 }
void ast_frame_dump | ( | const char * | name, | |
struct ast_frame * | f, | |||
char * | prefix | |||
) |
Dump a frame for debugging purposes
Definition at line 754 of file frame.c.
References AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_FLASH, AST_CONTROL_HANGUP, AST_CONTROL_OFFHOOK, AST_CONTROL_OPTION, AST_CONTROL_RADIO_KEY, AST_CONTROL_RADIO_UNKEY, AST_CONTROL_RING, AST_CONTROL_RINGING, AST_CONTROL_TAKEOFFHOOK, AST_CONTROL_WINK, 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_verbose(), COLOR_BLACK, COLOR_BRCYAN, COLOR_BRGREEN, COLOR_BRMAGENTA, COLOR_BRRED, COLOR_YELLOW, f, and term_color().
Referenced by __ast_read(), and ast_write().
00755 { 00756 const char noname[] = "unknown"; 00757 char ftype[40] = "Unknown Frametype"; 00758 char cft[80]; 00759 char subclass[40] = "Unknown Subclass"; 00760 char csub[80]; 00761 char moreinfo[40] = ""; 00762 char cn[60]; 00763 char cp[40]; 00764 char cmn[40]; 00765 00766 if (!name) 00767 name = noname; 00768 00769 00770 if (!f) { 00771 ast_verbose("%s [ %s (NULL) ] [%s]\n", 00772 term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)), 00773 term_color(cft, "HANGUP", COLOR_BRRED, COLOR_BLACK, sizeof(cft)), 00774 term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); 00775 return; 00776 } 00777 /* XXX We should probably print one each of voice and video when the format changes XXX */ 00778 if (f->frametype == AST_FRAME_VOICE) 00779 return; 00780 if (f->frametype == AST_FRAME_VIDEO) 00781 return; 00782 switch(f->frametype) { 00783 case AST_FRAME_DTMF_BEGIN: 00784 strcpy(ftype, "DTMF Begin"); 00785 subclass[0] = f->subclass; 00786 subclass[1] = '\0'; 00787 break; 00788 case AST_FRAME_DTMF_END: 00789 strcpy(ftype, "DTMF End"); 00790 subclass[0] = f->subclass; 00791 subclass[1] = '\0'; 00792 break; 00793 case AST_FRAME_CONTROL: 00794 strcpy(ftype, "Control"); 00795 switch(f->subclass) { 00796 case AST_CONTROL_HANGUP: 00797 strcpy(subclass, "Hangup"); 00798 break; 00799 case AST_CONTROL_RING: 00800 strcpy(subclass, "Ring"); 00801 break; 00802 case AST_CONTROL_RINGING: 00803 strcpy(subclass, "Ringing"); 00804 break; 00805 case AST_CONTROL_ANSWER: 00806 strcpy(subclass, "Answer"); 00807 break; 00808 case AST_CONTROL_BUSY: 00809 strcpy(subclass, "Busy"); 00810 break; 00811 case AST_CONTROL_TAKEOFFHOOK: 00812 strcpy(subclass, "Take Off Hook"); 00813 break; 00814 case AST_CONTROL_OFFHOOK: 00815 strcpy(subclass, "Line Off Hook"); 00816 break; 00817 case AST_CONTROL_CONGESTION: 00818 strcpy(subclass, "Congestion"); 00819 break; 00820 case AST_CONTROL_FLASH: 00821 strcpy(subclass, "Flash"); 00822 break; 00823 case AST_CONTROL_WINK: 00824 strcpy(subclass, "Wink"); 00825 break; 00826 case AST_CONTROL_OPTION: 00827 strcpy(subclass, "Option"); 00828 break; 00829 case AST_CONTROL_RADIO_KEY: 00830 strcpy(subclass, "Key Radio"); 00831 break; 00832 case AST_CONTROL_RADIO_UNKEY: 00833 strcpy(subclass, "Unkey Radio"); 00834 break; 00835 case -1: 00836 strcpy(subclass, "Stop generators"); 00837 break; 00838 default: 00839 snprintf(subclass, sizeof(subclass), "Unknown control '%d'", f->subclass); 00840 } 00841 break; 00842 case AST_FRAME_NULL: 00843 strcpy(ftype, "Null Frame"); 00844 strcpy(subclass, "N/A"); 00845 break; 00846 case AST_FRAME_IAX: 00847 /* Should never happen */ 00848 strcpy(ftype, "IAX Specific"); 00849 snprintf(subclass, sizeof(subclass), "IAX Frametype %d", f->subclass); 00850 break; 00851 case AST_FRAME_TEXT: 00852 strcpy(ftype, "Text"); 00853 strcpy(subclass, "N/A"); 00854 ast_copy_string(moreinfo, f->data, sizeof(moreinfo)); 00855 break; 00856 case AST_FRAME_IMAGE: 00857 strcpy(ftype, "Image"); 00858 snprintf(subclass, sizeof(subclass), "Image format %s\n", ast_getformatname(f->subclass)); 00859 break; 00860 case AST_FRAME_HTML: 00861 strcpy(ftype, "HTML"); 00862 switch(f->subclass) { 00863 case AST_HTML_URL: 00864 strcpy(subclass, "URL"); 00865 ast_copy_string(moreinfo, f->data, sizeof(moreinfo)); 00866 break; 00867 case AST_HTML_DATA: 00868 strcpy(subclass, "Data"); 00869 break; 00870 case AST_HTML_BEGIN: 00871 strcpy(subclass, "Begin"); 00872 break; 00873 case AST_HTML_END: 00874 strcpy(subclass, "End"); 00875 break; 00876 case AST_HTML_LDCOMPLETE: 00877 strcpy(subclass, "Load Complete"); 00878 break; 00879 case AST_HTML_NOSUPPORT: 00880 strcpy(subclass, "No Support"); 00881 break; 00882 case AST_HTML_LINKURL: 00883 strcpy(subclass, "Link URL"); 00884 ast_copy_string(moreinfo, f->data, sizeof(moreinfo)); 00885 break; 00886 case AST_HTML_UNLINK: 00887 strcpy(subclass, "Unlink"); 00888 break; 00889 case AST_HTML_LINKREJECT: 00890 strcpy(subclass, "Link Reject"); 00891 break; 00892 default: 00893 snprintf(subclass, sizeof(subclass), "Unknown HTML frame '%d'\n", f->subclass); 00894 break; 00895 } 00896 break; 00897 case AST_FRAME_MODEM: 00898 strcpy(ftype, "Modem"); 00899 switch (f->subclass) { 00900 case AST_MODEM_T38: 00901 strcpy(subclass, "T.38"); 00902 break; 00903 case AST_MODEM_V150: 00904 strcpy(subclass, "V.150"); 00905 break; 00906 default: 00907 snprintf(subclass, sizeof(subclass), "Unknown MODEM frame '%d'\n", f->subclass); 00908 break; 00909 } 00910 break; 00911 default: 00912 snprintf(ftype, sizeof(ftype), "Unknown Frametype '%d'", f->frametype); 00913 } 00914 if (!ast_strlen_zero(moreinfo)) 00915 ast_verbose("%s [ TYPE: %s (%d) SUBCLASS: %s (%d) '%s' ] [%s]\n", 00916 term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)), 00917 term_color(cft, ftype, COLOR_BRRED, COLOR_BLACK, sizeof(cft)), 00918 f->frametype, 00919 term_color(csub, subclass, COLOR_BRCYAN, COLOR_BLACK, sizeof(csub)), 00920 f->subclass, 00921 term_color(cmn, moreinfo, COLOR_BRGREEN, COLOR_BLACK, sizeof(cmn)), 00922 term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); 00923 else 00924 ast_verbose("%s [ TYPE: %s (%d) SUBCLASS: %s (%d) ] [%s]\n", 00925 term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)), 00926 term_color(cft, ftype, COLOR_BRRED, COLOR_BLACK, sizeof(cft)), 00927 f->frametype, 00928 term_color(csub, subclass, COLOR_BRCYAN, COLOR_BLACK, sizeof(csub)), 00929 f->subclass, 00930 term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); 00931 }
void ast_frame_free | ( | struct ast_frame * | fr, | |
int | cache | |||
) |
Requests a frame to be allocated Frees a frame.
fr | Frame to free | |
cache | Whether to consider this frame for frame caching |
Definition at line 321 of file frame.c.
References ast_dsp_frame_freed(), AST_FRFLAG_FROM_DSP, AST_FRFLAG_FROM_TRANSLATOR, AST_LIST_INSERT_HEAD, AST_LIST_LOCK, AST_LIST_REMOVE, AST_LIST_UNLOCK, AST_MALLOCD_DATA, AST_MALLOCD_HDR, AST_MALLOCD_SRC, ast_test_flag, ast_translate_frame_freed(), FRAME_CACHE_MAX_SIZE, frames, and free.
Referenced by mixmonitor_thread().
00322 { 00323 if (ast_test_flag(fr, AST_FRFLAG_FROM_TRANSLATOR)) 00324 ast_translate_frame_freed(fr); 00325 else if (ast_test_flag(fr, AST_FRFLAG_FROM_DSP)) 00326 ast_dsp_frame_freed(fr); 00327 00328 if (!fr->mallocd) 00329 return; 00330 00331 #if !defined(LOW_MEMORY) 00332 if (cache && fr->mallocd == AST_MALLOCD_HDR) { 00333 /* Cool, only the header is malloc'd, let's just cache those for now 00334 * to keep things simple... */ 00335 struct ast_frame_cache *frames; 00336 00337 if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames))) 00338 && frames->size < FRAME_CACHE_MAX_SIZE) { 00339 AST_LIST_INSERT_HEAD(&frames->list, fr, frame_list); 00340 frames->size++; 00341 return; 00342 } 00343 } 00344 #endif 00345 00346 if (fr->mallocd & AST_MALLOCD_DATA) { 00347 if (fr->data) 00348 free(fr->data - fr->offset); 00349 } 00350 if (fr->mallocd & AST_MALLOCD_SRC) { 00351 if (fr->src) 00352 free((char *)fr->src); 00353 } 00354 if (fr->mallocd & AST_MALLOCD_HDR) { 00355 #ifdef TRACE_FRAMES 00356 AST_LIST_LOCK(&headerlist); 00357 headers--; 00358 AST_LIST_REMOVE(&headerlist, fr, frame_list); 00359 AST_LIST_UNLOCK(&headerlist); 00360 #endif 00361 free(fr); 00362 } 00363 }
static struct ast_frame* ast_frame_header_new | ( | void | ) | [static] |
Definition at line 273 of file frame.c.
References ast_calloc, ast_calloc_cache, AST_LIST_INSERT_HEAD, AST_LIST_LOCK, AST_LIST_REMOVE_HEAD, AST_LIST_UNLOCK, AST_MALLOCD_HDR, f, and frames.
Referenced by ast_frisolate().
00274 { 00275 struct ast_frame *f; 00276 00277 #if !defined(LOW_MEMORY) 00278 struct ast_frame_cache *frames; 00279 00280 if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) { 00281 if ((f = AST_LIST_REMOVE_HEAD(&frames->list, frame_list))) { 00282 size_t mallocd_len = f->mallocd_hdr_len; 00283 memset(f, 0, sizeof(*f)); 00284 f->mallocd_hdr_len = mallocd_len; 00285 f->mallocd = AST_MALLOCD_HDR; 00286 frames->size--; 00287 return f; 00288 } 00289 } 00290 if (!(f = ast_calloc_cache(1, sizeof(*f)))) 00291 return NULL; 00292 #else 00293 if (!(f = ast_calloc(1, sizeof(*f)))) 00294 return NULL; 00295 #endif 00296 00297 f->mallocd_hdr_len = sizeof(*f); 00298 #ifdef TRACE_FRAMES 00299 AST_LIST_LOCK(&headerlist); 00300 headers++; 00301 AST_LIST_INSERT_HEAD(&headerlist, f, frame_list); 00302 AST_LIST_UNLOCK(&headerlist); 00303 #endif 00304 00305 return f; 00306 }
Sums two frames of audio samples.
f1 | The first frame (which will contain the result) | |
f2 | The second frame |
Definition at line 1597 of file frame.c.
References AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_slinear_saturated_add(), ast_frame::data, ast_frame::frametype, ast_frame::samples, and ast_frame::subclass.
01598 { 01599 int count; 01600 short *data1, *data2; 01601 01602 if ((f1->frametype != AST_FRAME_VOICE) || (f1->subclass != AST_FORMAT_SLINEAR)) 01603 return -1; 01604 01605 if ((f2->frametype != AST_FRAME_VOICE) || (f2->subclass != AST_FORMAT_SLINEAR)) 01606 return -1; 01607 01608 if (f1->samples != f2->samples) 01609 return -1; 01610 01611 for (count = 0, data1 = f1->data, data2 = f2->data; 01612 count < f1->samples; 01613 count++, data1++, data2++) 01614 ast_slinear_saturated_add(data1, data2); 01615 01616 return 0; 01617 }
Copies a frame.
fr | frame to copy Duplicates a frame -- should only rarely be used, typically frisolate is good enough |
Definition at line 429 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_frame::data, ast_frame::datalen, ast_frame::delivery, f, frames, ast_frame::frametype, len, ast_frame::len, ast_frame::mallocd, ast_frame::mallocd_hdr_len, ast_frame::offset, ast_frame::samples, ast_frame::seqno, ast_frame::src, ast_frame::subclass, and ast_frame::ts.
Referenced by ast_jb_put(), ast_queue_frame(), ast_rtp_write(), ast_slinfactory_feed(), audiohook_read_frame_single(), autoservice_run(), recordthread(), and rpt().
00430 { 00431 struct ast_frame *out = NULL; 00432 int len, srclen = 0; 00433 void *buf = NULL; 00434 00435 #if !defined(LOW_MEMORY) 00436 struct ast_frame_cache *frames; 00437 #endif 00438 00439 /* Start with standard stuff */ 00440 len = sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen; 00441 /* If we have a source, add space for it */ 00442 /* 00443 * XXX Watch out here - if we receive a src which is not terminated 00444 * properly, we can be easily attacked. Should limit the size we deal with. 00445 */ 00446 if (f->src) 00447 srclen = strlen(f->src); 00448 if (srclen > 0) 00449 len += srclen + 1; 00450 00451 #if !defined(LOW_MEMORY) 00452 if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) { 00453 AST_LIST_TRAVERSE_SAFE_BEGIN(&frames->list, out, frame_list) { 00454 if (out->mallocd_hdr_len >= len) { 00455 size_t mallocd_len = out->mallocd_hdr_len; 00456 AST_LIST_REMOVE_CURRENT(&frames->list, frame_list); 00457 memset(out, 0, sizeof(*out)); 00458 out->mallocd_hdr_len = mallocd_len; 00459 buf = out; 00460 frames->size--; 00461 break; 00462 } 00463 } 00464 AST_LIST_TRAVERSE_SAFE_END 00465 } 00466 #endif 00467 00468 if (!buf) { 00469 if (!(buf = ast_calloc_cache(1, len))) 00470 return NULL; 00471 out = buf; 00472 out->mallocd_hdr_len = len; 00473 } 00474 00475 out->frametype = f->frametype; 00476 out->subclass = f->subclass; 00477 out->datalen = f->datalen; 00478 out->samples = f->samples; 00479 out->delivery = f->delivery; 00480 /* Set us as having malloc'd header only, so it will eventually 00481 get freed. */ 00482 out->mallocd = AST_MALLOCD_HDR; 00483 out->offset = AST_FRIENDLY_OFFSET; 00484 if (out->datalen) { 00485 out->data = buf + sizeof(*out) + AST_FRIENDLY_OFFSET; 00486 memcpy(out->data, f->data, out->datalen); 00487 } 00488 if (srclen > 0) { 00489 out->src = buf + sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen; 00490 /* Must have space since we allocated for it */ 00491 strcpy((char *)out->src, f->src); 00492 } 00493 ast_copy_flags(out, f, AST_FRFLAG_HAS_TIMING_INFO); 00494 out->ts = f->ts; 00495 out->len = f->len; 00496 out->seqno = f->seqno; 00497 return out; 00498 }
Makes a frame independent of any static storage.
fr | frame to act upon Take a frame, and if it's not been malloc'd, make a malloc'd copy and if the data hasn't been malloced then make the data malloc'd. If you need to store frames, say for queueing, then you should call this function. |
Definition at line 370 of file frame.c.
References ast_clear_flag, ast_copy_flags, ast_frame_header_new(), AST_FRFLAG_FROM_DSP, AST_FRFLAG_FROM_TRANSLATOR, 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::data, ast_frame::datalen, ast_frame::frametype, free, ast_frame::len, ast_frame::mallocd, ast_frame::offset, ast_frame::samples, ast_frame::seqno, ast_frame::src, ast_frame::subclass, and ast_frame::ts.
Referenced by jpeg_read_image().
00371 { 00372 struct ast_frame *out; 00373 void *newdata; 00374 00375 ast_clear_flag(fr, AST_FRFLAG_FROM_TRANSLATOR); 00376 ast_clear_flag(fr, AST_FRFLAG_FROM_DSP); 00377 00378 if (!(fr->mallocd & AST_MALLOCD_HDR)) { 00379 /* Allocate a new header if needed */ 00380 if (!(out = ast_frame_header_new())) 00381 return NULL; 00382 out->frametype = fr->frametype; 00383 out->subclass = fr->subclass; 00384 out->datalen = fr->datalen; 00385 out->samples = fr->samples; 00386 out->offset = fr->offset; 00387 out->data = fr->data; 00388 /* Copy the timing data */ 00389 ast_copy_flags(out, fr, AST_FRFLAG_HAS_TIMING_INFO); 00390 if (ast_test_flag(fr, AST_FRFLAG_HAS_TIMING_INFO)) { 00391 out->ts = fr->ts; 00392 out->len = fr->len; 00393 out->seqno = fr->seqno; 00394 } 00395 } else 00396 out = fr; 00397 00398 if (!(fr->mallocd & AST_MALLOCD_SRC)) { 00399 if (fr->src) { 00400 if (!(out->src = ast_strdup(fr->src))) { 00401 if (out != fr) 00402 free(out); 00403 return NULL; 00404 } 00405 } 00406 } else 00407 out->src = fr->src; 00408 00409 if (!(fr->mallocd & AST_MALLOCD_DATA)) { 00410 if (!(newdata = ast_malloc(fr->datalen + AST_FRIENDLY_OFFSET))) { 00411 if (out->src != fr->src) 00412 free((void *) out->src); 00413 if (out != fr) 00414 free(out); 00415 return NULL; 00416 } 00417 newdata += AST_FRIENDLY_OFFSET; 00418 out->offset = AST_FRIENDLY_OFFSET; 00419 out->datalen = fr->datalen; 00420 memcpy(newdata, fr->data, fr->datalen); 00421 out->data = newdata; 00422 } 00423 00424 out->mallocd = AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA; 00425 00426 return out; 00427 }
struct ast_format_list* ast_get_format_list | ( | size_t * | size | ) |
Definition at line 516 of file frame.c.
References AST_FORMAT_LIST.
00517 { 00518 *size = (sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0])); 00519 return AST_FORMAT_LIST; 00520 }
struct ast_format_list* ast_get_format_list_index | ( | int | index | ) |
Definition at line 511 of file frame.c.
References AST_FORMAT_LIST.
00512 { 00513 return &AST_FORMAT_LIST[index]; 00514 }
int ast_getformatbyname | ( | const char * | name | ) |
Gets a format from a name.
name | string of format |
Definition at line 582 of file frame.c.
References ast_expand_codec_alias(), AST_FORMAT_LIST, and format.
Referenced by ast_parse_allow_disallow(), iax_template_parse(), load_moh_classes(), reload_config(), and try_suggested_sip_codec().
00583 { 00584 int x, all, format = 0; 00585 00586 all = strcasecmp(name, "all") ? 0 : 1; 00587 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 00588 if(AST_FORMAT_LIST[x].visible && (all || 00589 !strcasecmp(AST_FORMAT_LIST[x].name,name) || 00590 !strcasecmp(AST_FORMAT_LIST[x].name,ast_expand_codec_alias(name)))) { 00591 format |= AST_FORMAT_LIST[x].bits; 00592 if(!all) 00593 break; 00594 } 00595 } 00596 00597 return format; 00598 }
char* ast_getformatname | ( | int | format | ) |
Get the name of a format.
format | id of format |
Definition at line 522 of file frame.c.
References AST_FORMAT_LIST, ast_format_list::bits, name, and ast_format_list::visible.
Referenced by __ast_play_and_record(), __ast_read(), __ast_register_translator(), __login_exec(), _sip_show_peer(), add_codec_to_answer(), add_codec_to_sdp(), agent_call(), ast_codec_get_len(), ast_codec_get_samples(), ast_codec_pref_string(), ast_dsp_process(), ast_frame_dump(), ast_openvstream(), ast_rtp_write(), ast_slinfactory_feed(), ast_streamfile(), ast_translator_build_path(), ast_unregister_translator(), ast_writestream(), background_detect_exec(), do_waiting(), eagi_exec(), func_channel_read(), function_iaxpeer(), function_sippeer(), gtalk_show_channels(), iax2_request(), iax2_show_channels(), iax2_show_peer(), iax_show_provisioning(), moh_classes_show(), moh_release(), oh323_rtp_read(), phone_setup(), print_codec_to_cli(), rebuild_matrix(), register_translator(), set_format(), set_peer_capabilities(), show_codecs(), show_codecs_deprecated(), show_file_formats(), show_file_formats_deprecated(), show_image_formats(), show_image_formats_deprecated(), show_translation(), show_translation_deprecated(), sip_request_call(), sip_rtp_read(), socket_process(), xagi_exec(), and zt_read().
00523 { 00524 int x; 00525 char *ret = "unknown"; 00526 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 00527 if(AST_FORMAT_LIST[x].visible && AST_FORMAT_LIST[x].bits == format) { 00528 ret = AST_FORMAT_LIST[x].name; 00529 break; 00530 } 00531 } 00532 return ret; 00533 }
char* ast_getformatname_multiple | ( | char * | buf, | |
size_t | size, | |||
int | format | |||
) |
Get the names of a set of formats.
buf | a buffer for the output string | |
size | size of buf (bytes) | |
format | the format (combined IDs of codecs) Prints a list of readable codec names corresponding to "format". ex: for format=AST_FORMAT_GSM|AST_FORMAT_SPEEX|AST_FORMAT_ILBC it will return "0x602 (GSM|SPEEX|ILBC)" |
Definition at line 535 of file frame.c.
References AST_FORMAT_LIST, ast_format_list::bits, len, name, and ast_format_list::visible.
Referenced by __sip_show_channels(), _sip_show_peer(), add_sdp(), ast_streamfile(), function_iaxpeer(), function_sippeer(), gtalk_is_answered(), gtalk_newcall(), handle_showchan(), handle_showchan_deprecated(), iax2_show_peer(), process_sdp(), serialize_showchan(), sip_new(), sip_request_call(), sip_show_channel(), sip_show_settings(), and sip_write().
00536 { 00537 int x; 00538 unsigned len; 00539 char *start, *end = buf; 00540 00541 if (!size) 00542 return buf; 00543 snprintf(end, size, "0x%x (", format); 00544 len = strlen(end); 00545 end += len; 00546 size -= len; 00547 start = end; 00548 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 00549 if (AST_FORMAT_LIST[x].visible && (AST_FORMAT_LIST[x].bits & format)) { 00550 snprintf(end, size,"%s|",AST_FORMAT_LIST[x].name); 00551 len = strlen(end); 00552 end += len; 00553 size -= len; 00554 } 00555 } 00556 if (start == end) 00557 snprintf(start, size, "nothing)"); 00558 else if (size > 1) 00559 *(end -1) = ')'; 00560 return buf; 00561 }
AST_LIST_HEAD_NOLOCK | ( | ast_frames | , | |
ast_frame | ||||
) |
This is just so ast_frames, a list head struct for holding a list of ast_frame structures, is defined.
void ast_parse_allow_disallow | ( | struct ast_codec_pref * | pref, | |
int * | mask, | |||
const char * | list, | |||
int | allowing | |||
) |
Parse an "allow" or "deny" line in a channel or device configuration and update the capabilities mask and pref if provided. Video codecs are not added to codec preference lists, since we can not transcode.
Definition at line 1303 of file frame.c.
References ast_codec_pref_append(), ast_codec_pref_remove(), ast_codec_pref_setsize(), AST_FORMAT_AUDIO_MASK, ast_getformatbyname(), ast_log(), ast_strdupa, format, LOG_DEBUG, LOG_WARNING, option_debug, parse(), and strsep().
Referenced by build_device(), build_peer(), build_user(), gtalk_create_member(), gtalk_load_config(), reload_config(), set_config(), and update_common_options().
01304 { 01305 char *parse = NULL, *this = NULL, *psize = NULL; 01306 int format = 0, framems = 0; 01307 01308 parse = ast_strdupa(list); 01309 while ((this = strsep(&parse, ","))) { 01310 framems = 0; 01311 if ((psize = strrchr(this, ':'))) { 01312 *psize++ = '\0'; 01313 if (option_debug) 01314 ast_log(LOG_DEBUG,"Packetization for codec: %s is %s\n", this, psize); 01315 framems = atoi(psize); 01316 if (framems < 0) 01317 framems = 0; 01318 } 01319 if (!(format = ast_getformatbyname(this))) { 01320 ast_log(LOG_WARNING, "Cannot %s unknown format '%s'\n", allowing ? "allow" : "disallow", this); 01321 continue; 01322 } 01323 01324 if (mask) { 01325 if (allowing) 01326 *mask |= format; 01327 else 01328 *mask &= ~format; 01329 } 01330 01331 /* Set up a preference list for audio. Do not include video in preferences 01332 since we can not transcode video and have to use whatever is offered 01333 */ 01334 if (pref && (format & AST_FORMAT_AUDIO_MASK)) { 01335 if (strcasecmp(this, "all")) { 01336 if (allowing) { 01337 ast_codec_pref_append(pref, format); 01338 ast_codec_pref_setsize(pref, format, framems); 01339 } 01340 else 01341 ast_codec_pref_remove(pref, format); 01342 } else if (!allowing) { 01343 memset(pref, 0, sizeof(*pref)); 01344 } 01345 } 01346 } 01347 }
void ast_smoother_free | ( | struct ast_smoother * | s | ) |
Definition at line 268 of file frame.c.
Referenced by ast_rtp_codec_setpref(), ast_rtp_destroy(), and ast_rtp_write().
int ast_smoother_get_flags | ( | struct ast_smoother * | s | ) |
struct ast_smoother* ast_smoother_new | ( | int | size | ) |
Definition at line 147 of file frame.c.
References ast_malloc, ast_smoother_reset(), and s.
Referenced by ast_rtp_write().
00148 { 00149 struct ast_smoother *s; 00150 if (size < 1) 00151 return NULL; 00152 if ((s = ast_malloc(sizeof(*s)))) 00153 ast_smoother_reset(s, size); 00154 return s; 00155 }
struct ast_frame* ast_smoother_read | ( | struct ast_smoother * | s | ) |
Definition at line 218 of file frame.c.
References AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), AST_SMOOTHER_FLAG_G729, ast_tvadd(), len, LOG_WARNING, and s.
Referenced by ast_rtp_write().
00219 { 00220 struct ast_frame *opt; 00221 int len; 00222 00223 /* IF we have an optimization frame, send it */ 00224 if (s->opt) { 00225 if (s->opt->offset < AST_FRIENDLY_OFFSET) 00226 ast_log(LOG_WARNING, "Returning a frame of inappropriate offset (%d).\n", 00227 s->opt->offset); 00228 opt = s->opt; 00229 s->opt = NULL; 00230 return opt; 00231 } 00232 00233 /* Make sure we have enough data */ 00234 if (s->len < s->size) { 00235 /* Or, if this is a G.729 frame with VAD on it, send it immediately anyway */ 00236 if (!((s->flags & AST_SMOOTHER_FLAG_G729) && (s->size % 10))) 00237 return NULL; 00238 } 00239 len = s->size; 00240 if (len > s->len) 00241 len = s->len; 00242 /* Make frame */ 00243 s->f.frametype = AST_FRAME_VOICE; 00244 s->f.subclass = s->format; 00245 s->f.data = s->framedata + AST_FRIENDLY_OFFSET; 00246 s->f.offset = AST_FRIENDLY_OFFSET; 00247 s->f.datalen = len; 00248 /* Samples will be improper given VAD, but with VAD the concept really doesn't even exist */ 00249 s->f.samples = len * s->samplesperbyte; /* XXX rounding */ 00250 s->f.delivery = s->delivery; 00251 /* Fill Data */ 00252 memcpy(s->f.data, s->data, len); 00253 s->len -= len; 00254 /* Move remaining data to the front if applicable */ 00255 if (s->len) { 00256 /* In principle this should all be fine because if we are sending 00257 G.729 VAD, the next timestamp will take over anyawy */ 00258 memmove(s->data, s->data + len, s->len); 00259 if (!ast_tvzero(s->delivery)) { 00260 /* If we have delivery time, increment it, otherwise, leave it at 0 */ 00261 s->delivery = ast_tvadd(s->delivery, ast_samp2tv(s->f.samples, 8000)); 00262 } 00263 } 00264 /* Return frame */ 00265 return &s->f; 00266 }
void ast_smoother_reset | ( | struct ast_smoother * | s, | |
int | size | |||
) |
Definition at line 141 of file frame.c.
References s.
Referenced by ast_smoother_new().
00142 { 00143 memset(s, 0, sizeof(*s)); 00144 s->size = size; 00145 }
void ast_smoother_set_flags | ( | struct ast_smoother * | s, | |
int | flags | |||
) |
int ast_smoother_test_flag | ( | struct ast_smoother * | s, | |
int | flag | |||
) |
Definition at line 167 of file frame.c.
References s.
Referenced by ast_rtp_write().
00168 { 00169 return (s->flags & flag); 00170 }
void ast_swapcopy_samples | ( | void * | dst, | |
const void * | src, | |||
int | samples | |||
) |
Definition at line 500 of file frame.c.
Referenced by __ast_smoother_feed(), iax_frame_wrap(), and phone_write_buf().
00501 { 00502 int i; 00503 unsigned short *dst_s = dst; 00504 const unsigned short *src_s = src; 00505 00506 for (i = 0; i < samples; i++) 00507 dst_s[i] = (src_s[i]<<8) | (src_s[i]>>8); 00508 }
AST_THREADSTORAGE_CUSTOM | ( | frame_cache | , | |
frame_cache_init | , | |||
frame_cache_cleanup | ||||
) |
A per-thread cache of frame headers.
static void frame_cache_cleanup | ( | void * | data | ) | [static] |
static int g723_len | ( | unsigned char | buf | ) | [static] |
Definition at line 1349 of file frame.c.
References ast_log(), LOG_WARNING, type, TYPE_HIGH, TYPE_LOW, TYPE_MASK, and TYPE_SILENCE.
Referenced by g723_samples().
01350 { 01351 enum frame_type type = buf & TYPE_MASK; 01352 01353 switch(type) { 01354 case TYPE_DONTSEND: 01355 return 0; 01356 break; 01357 case TYPE_SILENCE: 01358 return 4; 01359 break; 01360 case TYPE_HIGH: 01361 return 24; 01362 break; 01363 case TYPE_LOW: 01364 return 20; 01365 break; 01366 default: 01367 ast_log(LOG_WARNING, "Badly encoded frame (%d)\n", type); 01368 } 01369 return -1; 01370 }
static int g723_samples | ( | unsigned char * | buf, | |
int | maxlen | |||
) | [static] |
Definition at line 1372 of file frame.c.
References g723_len().
Referenced by ast_codec_get_samples().
01373 { 01374 int pos = 0; 01375 int samples = 0; 01376 int res; 01377 while(pos < maxlen) { 01378 res = g723_len(buf[pos]); 01379 if (res <= 0) 01380 break; 01381 samples += 240; 01382 pos += res; 01383 } 01384 return samples; 01385 }
static unsigned char get_n_bits_at | ( | unsigned char * | data, | |
int | n, | |||
int | bit | |||
) | [static] |
Definition at line 1387 of file frame.c.
Referenced by speex_get_wb_sz_at(), and speex_samples().
01388 { 01389 int byte = bit / 8; /* byte containing first bit */ 01390 int rem = 8 - (bit % 8); /* remaining bits in first byte */ 01391 unsigned char ret = 0; 01392 01393 if (n <= 0 || n > 8) 01394 return 0; 01395 01396 if (rem < n) { 01397 ret = (data[byte] << (n - rem)); 01398 ret |= (data[byte + 1] >> (8 - n + rem)); 01399 } else { 01400 ret = (data[byte] >> (rem - n)); 01401 } 01402 01403 return (ret & (0xff >> (8 - n))); 01404 }
int init_framer | ( | void | ) |
Provided by frame.c
Definition at line 1035 of file frame.c.
References ast_cli_register_multiple(), and my_clis.
Referenced by main().
01036 { 01037 ast_cli_register_multiple(my_clis, sizeof(my_clis) / sizeof(struct ast_cli_entry)); 01038 return 0; 01039 }
static int show_codec_n | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 727 of file frame.c.
References ast_cli(), ast_codec2str(), RESULT_SHOWUSAGE, and RESULT_SUCCESS.
00728 { 00729 int codec, i, found=0; 00730 00731 if (argc != 4) 00732 return RESULT_SHOWUSAGE; 00733 00734 if (sscanf(argv[3],"%d",&codec) != 1) 00735 return RESULT_SHOWUSAGE; 00736 00737 for (i = 0; i < 32; i++) 00738 if (codec & (1 << i)) { 00739 found = 1; 00740 ast_cli(fd, "%11u (1 << %2d) %s\n",1 << i,i,ast_codec2str(1<<i)); 00741 } 00742 00743 if (!found) 00744 ast_cli(fd, "Codec %d not found\n", codec); 00745 00746 return RESULT_SUCCESS; 00747 }
static int show_codec_n_deprecated | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 705 of file frame.c.
References ast_cli(), ast_codec2str(), RESULT_SHOWUSAGE, and RESULT_SUCCESS.
00706 { 00707 int codec, i, found=0; 00708 00709 if (argc != 3) 00710 return RESULT_SHOWUSAGE; 00711 00712 if (sscanf(argv[2],"%d",&codec) != 1) 00713 return RESULT_SHOWUSAGE; 00714 00715 for (i = 0; i < 32; i++) 00716 if (codec & (1 << i)) { 00717 found = 1; 00718 ast_cli(fd, "%11u (1 << %2d) %s\n",1 << i,i,ast_codec2str(1<<i)); 00719 } 00720 00721 if (!found) 00722 ast_cli(fd, "Codec %d not found\n", codec); 00723 00724 return RESULT_SUCCESS; 00725 }
static int show_codecs | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 657 of file frame.c.
References ast_cli(), ast_codec2str(), ast_getformatname(), ast_opt_dont_warn, RESULT_SHOWUSAGE, and RESULT_SUCCESS.
00658 { 00659 int i, found=0; 00660 char hex[25]; 00661 00662 if ((argc < 3) || (argc > 4)) 00663 return RESULT_SHOWUSAGE; 00664 00665 if (!ast_opt_dont_warn) 00666 ast_cli(fd, "Disclaimer: this command is for informational purposes only.\n" 00667 "\tIt does not indicate anything about your configuration.\n"); 00668 00669 ast_cli(fd, "%11s %9s %10s TYPE %8s %s\n","INT","BINARY","HEX","NAME","DESC"); 00670 ast_cli(fd, "--------------------------------------------------------------------------------\n"); 00671 if ((argc == 3) || (!strcasecmp(argv[3],"audio"))) { 00672 found = 1; 00673 for (i=0;i<13;i++) { 00674 snprintf(hex,25,"(0x%x)",1<<i); 00675 ast_cli(fd, "%11u (1 << %2d) %10s audio %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); 00676 } 00677 } 00678 00679 if ((argc == 3) || (!strcasecmp(argv[3],"image"))) { 00680 found = 1; 00681 for (i=16;i<18;i++) { 00682 snprintf(hex,25,"(0x%x)",1<<i); 00683 ast_cli(fd, "%11u (1 << %2d) %10s image %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); 00684 } 00685 } 00686 00687 if ((argc == 3) || (!strcasecmp(argv[3],"video"))) { 00688 found = 1; 00689 for (i=18;i<22;i++) { 00690 snprintf(hex,25,"(0x%x)",1<<i); 00691 ast_cli(fd, "%11u (1 << %2d) %10s video %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); 00692 } 00693 } 00694 00695 if (! found) 00696 return RESULT_SHOWUSAGE; 00697 else 00698 return RESULT_SUCCESS; 00699 }
static int show_codecs_deprecated | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 613 of file frame.c.
References ast_cli(), ast_codec2str(), ast_getformatname(), ast_opt_dont_warn, RESULT_SHOWUSAGE, and RESULT_SUCCESS.
00614 { 00615 int i, found=0; 00616 char hex[25]; 00617 00618 if ((argc < 2) || (argc > 3)) 00619 return RESULT_SHOWUSAGE; 00620 00621 if (!ast_opt_dont_warn) 00622 ast_cli(fd, "Disclaimer: this command is for informational purposes only.\n" 00623 "\tIt does not indicate anything about your configuration.\n"); 00624 00625 ast_cli(fd, "%11s %9s %10s TYPE %8s %s\n","INT","BINARY","HEX","NAME","DESC"); 00626 ast_cli(fd, "--------------------------------------------------------------------------------\n"); 00627 if ((argc == 2) || (!strcasecmp(argv[1],"audio"))) { 00628 found = 1; 00629 for (i=0;i<13;i++) { 00630 snprintf(hex,25,"(0x%x)",1<<i); 00631 ast_cli(fd, "%11u (1 << %2d) %10s audio %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); 00632 } 00633 } 00634 00635 if ((argc == 2) || (!strcasecmp(argv[1],"image"))) { 00636 found = 1; 00637 for (i=16;i<18;i++) { 00638 snprintf(hex,25,"(0x%x)",1<<i); 00639 ast_cli(fd, "%11u (1 << %2d) %10s image %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); 00640 } 00641 } 00642 00643 if ((argc == 2) || (!strcasecmp(argv[1],"video"))) { 00644 found = 1; 00645 for (i=18;i<22;i++) { 00646 snprintf(hex,25,"(0x%x)",1<<i); 00647 ast_cli(fd, "%11u (1 << %2d) %10s video %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); 00648 } 00649 } 00650 00651 if (! found) 00652 return RESULT_SHOWUSAGE; 00653 else 00654 return RESULT_SUCCESS; 00655 }
static int speex_get_wb_sz_at | ( | unsigned char * | data, | |
int | len, | |||
int | bit | |||
) | [static] |
Definition at line 1406 of file frame.c.
References ast_log(), get_n_bits_at(), and LOG_WARNING.
Referenced by speex_samples().
01407 { 01408 static int SpeexWBSubModeSz[] = { 01409 0, 36, 112, 192, 01410 352, 0, 0, 0 }; 01411 int off = bit; 01412 unsigned char c; 01413 01414 /* skip up to two wideband frames */ 01415 if (((len * 8 - off) >= 5) && 01416 get_n_bits_at(data, 1, off)) { 01417 c = get_n_bits_at(data, 3, off + 1); 01418 off += SpeexWBSubModeSz[c]; 01419 01420 if (((len * 8 - off) >= 5) && 01421 get_n_bits_at(data, 1, off)) { 01422 c = get_n_bits_at(data, 3, off + 1); 01423 off += SpeexWBSubModeSz[c]; 01424 01425 if (((len * 8 - off) >= 5) && 01426 get_n_bits_at(data, 1, off)) { 01427 ast_log(LOG_WARNING, "Encountered corrupt speex frame; too many wideband frames in a row.\n"); 01428 return -1; 01429 } 01430 } 01431 01432 } 01433 return off - bit; 01434 }
static int speex_samples | ( | unsigned char * | data, | |
int | len | |||
) | [static] |
Definition at line 1436 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().
01437 { 01438 static int SpeexSubModeSz[] = { 01439 5, 43, 119, 160, 01440 220, 300, 364, 492, 01441 79, 0, 0, 0, 01442 0, 0, 0, 0 }; 01443 static int SpeexInBandSz[] = { 01444 1, 1, 4, 4, 01445 4, 4, 4, 4, 01446 8, 8, 16, 16, 01447 32, 32, 64, 64 }; 01448 int bit = 0; 01449 int cnt = 0; 01450 int off; 01451 unsigned char c; 01452 01453 while ((len * 8 - bit) >= 5) { 01454 /* skip wideband frames */ 01455 off = speex_get_wb_sz_at(data, len, bit); 01456 if (off < 0) { 01457 ast_log(LOG_WARNING, "Had error while reading wideband frames for speex samples\n"); 01458 break; 01459 } 01460 bit += off; 01461 01462 if ((len * 8 - bit) < 5) { 01463 ast_log(LOG_WARNING, "Not enough bits remaining after wide band for speex samples.\n"); 01464 break; 01465 } 01466 01467 /* get control bits */ 01468 c = get_n_bits_at(data, 5, bit); 01469 bit += 5; 01470 01471 if (c == 15) { 01472 /* terminator */ 01473 break; 01474 } else if (c == 14) { 01475 /* in-band signal; next 4 bits contain signal id */ 01476 c = get_n_bits_at(data, 4, bit); 01477 bit += 4; 01478 bit += SpeexInBandSz[c]; 01479 } else if (c == 13) { 01480 /* user in-band; next 5 bits contain msg len */ 01481 c = get_n_bits_at(data, 5, bit); 01482 bit += 5; 01483 bit += c * 8; 01484 } else if (c > 8) { 01485 /* unknown */ 01486 break; 01487 } else { 01488 /* skip number bits for submode (less the 5 control bits) */ 01489 bit += SpeexSubModeSz[c] - 5; 01490 cnt += 160; /* new frame */ 01491 } 01492 } 01493 return cnt; 01494 }
struct ast_format_list AST_FORMAT_LIST[] [static] |
Definition of supported media formats (codecs).
Definition at line 108 of file frame.c.
Referenced by ast_codec2str(), ast_codec_choose(), ast_codec_pref_append(), ast_codec_pref_getsize(), ast_codec_pref_index(), ast_codec_pref_prepend(), ast_codec_pref_remove(), ast_codec_pref_setsize(), ast_get_format_list(), ast_get_format_list_index(), ast_getformatbyname(), ast_getformatname(), and ast_getformatname_multiple().
struct ast_frame ast_null_frame = { AST_FRAME_NULL, } |
Queueing a null frame is fairly common, so we declare a global null frame object for this purpose instead of having to declare one on the stack
Definition at line 139 of file frame.c.
Referenced by __ast_read(), __oh323_rtp_create(), __oh323_update_info(), agent_new(), agent_read(), ast_channel_masquerade(), ast_channel_setwhentohangup(), ast_do_masquerade(), ast_rtcp_read(), ast_rtp_read(), ast_softhangup_nolock(), ast_udptl_read(), conf_run(), features_read(), gtalk_rtp_read(), handle_request_invite(), handle_response_invite(), iax2_read(), local_read(), mgcp_rtp_read(), oh323_read(), oh323_rtp_read(), process_rfc2833(), process_sdp(), send_dtmf(), sip_read(), sip_rtp_read(), skinny_rtp_read(), and wakeup_sub().
struct ast_cli_entry cli_show_audio_codecs [static] |
Initial value:
{ { "show", "audio", "codecs", NULL }, show_codecs_deprecated, NULL, NULL }
struct ast_cli_entry cli_show_codec [static] |
Initial value:
{ { "show", "codec", NULL }, show_codec_n_deprecated, NULL, NULL }
struct ast_cli_entry cli_show_codecs [static] |
Initial value:
{ { "show", "codecs", NULL }, show_codecs_deprecated, NULL, NULL }
struct ast_cli_entry cli_show_image_codecs [static] |
Initial value:
{ { "show", "image", "codecs", NULL }, show_codecs_deprecated, NULL, NULL }
struct ast_cli_entry cli_show_video_codecs [static] |
Initial value:
{ { "show", "video", "codecs", NULL }, show_codecs_deprecated, NULL, NULL }
char frame_show_codec_n_usage[] [static] |
char frame_show_codecs_usage[] [static] |
struct ast_cli_entry my_clis[] [static] |