#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 "asterisk/file.h"
Go to the source code of this file.
Data Structures | |
struct | ast_codec_alias_table |
struct | ast_frame_cache |
struct | ast_frames |
This is just so ast_frames, a list head struct for holding a list of ast_frame structures, is defined. More... | |
struct | ast_smoother |
Defines | |
#define | FRAME_CACHE_MAX_SIZE 10 |
Maximum ast_frame cache size. | |
#define | SMOOTHER_SIZE 8000 |
#define | TYPE_MASK 0x3 |
Enumerations | |
enum | frame_type { TYPE_HIGH, TYPE_LOW, TYPE_SILENCE, TYPE_DONTSEND } |
Functions | |
int | __ast_smoother_feed (struct ast_smoother *s, struct ast_frame *f, int swap) |
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. | |
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_reconfigure (struct ast_smoother *s, int bytes) |
Reconfigure an existing smoother to output a different number of bytes per frame. | |
void | ast_smoother_reset (struct ast_smoother *s, int bytes) |
void | ast_smoother_set_flags (struct ast_smoother *s, int flags) |
int | ast_smoother_test_flag (struct ast_smoother *s, int flag) |
void | ast_swapcopy_samples (void *dst, const void *src, int samples) |
static void | frame_cache_cleanup (void *data) |
static void | frame_cache_init (void) |
A per-thread cache of frame headers. | |
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 | smoother_frame_feed (struct ast_smoother *s, struct ast_frame *f, int swap) |
static int | speex_get_wb_sz_at (unsigned char *data, int len, int bit) |
static int | speex_samples (unsigned char *data, int len) |
Variables | |
static struct ast_format_list | AST_FORMAT_LIST [] |
Definition of supported media formats (codecs). | |
ast_frame | ast_null_frame = { AST_FRAME_NULL, } |
static struct ast_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 struct ast_threadstorage | frame_cache = { .once = PTHREAD_ONCE_INIT, .key_init = frame_cache_init , } |
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 70 of file frame.c.
Referenced by ast_frame_free(), and iax_frame_free().
#define SMOOTHER_SIZE 8000 |
#define TYPE_MASK 0x3 |
enum frame_type |
Definition at line 84 of file frame.c.
00084 { 00085 TYPE_HIGH, /* 0x0 */ 00086 TYPE_LOW, /* 0x1 */ 00087 TYPE_SILENCE, /* 0x2 */ 00088 TYPE_DONTSEND /* 0x3 */ 00089 };
int __ast_smoother_feed | ( | struct ast_smoother * | s, | |
struct ast_frame * | f, | |||
int | swap | |||
) |
Definition at line 216 of file frame.c.
References AST_FRAME_VOICE, ast_log(), AST_MIN_OFFSET, AST_SMOOTHER_FLAG_G729, ast_swapcopy_samples(), f, LOG_WARNING, s, smoother_frame_feed(), and SMOOTHER_SIZE.
00217 { 00218 if (f->frametype != AST_FRAME_VOICE) { 00219 ast_log(LOG_WARNING, "Huh? Can't smooth a non-voice frame!\n"); 00220 return -1; 00221 } 00222 if (!s->format) { 00223 s->format = f->subclass; 00224 s->samplesperbyte = (float)f->samples / (float)f->datalen; 00225 } else if (s->format != f->subclass) { 00226 ast_log(LOG_WARNING, "Smoother was working on %d format frames, now trying to feed %d?\n", s->format, f->subclass); 00227 return -1; 00228 } 00229 if (s->len + f->datalen > SMOOTHER_SIZE) { 00230 ast_log(LOG_WARNING, "Out of smoother space\n"); 00231 return -1; 00232 } 00233 if (((f->datalen == s->size) || 00234 ((f->datalen < 10) && (s->flags & AST_SMOOTHER_FLAG_G729))) && 00235 !s->opt && 00236 !s->len && 00237 (f->offset >= AST_MIN_OFFSET)) { 00238 /* Optimize by sending the frame we just got 00239 on the next read, thus eliminating the douple 00240 copy */ 00241 if (swap) 00242 ast_swapcopy_samples(f->data, f->data, f->samples); 00243 s->opt = f; 00244 s->opt_needs_swap = swap ? 1 : 0; 00245 return 0; 00246 } 00247 00248 return smoother_frame_feed(s, f, swap); 00249 }
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 639 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().
00640 { 00641 int x; 00642 char *ret = "unknown"; 00643 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 00644 if(AST_FORMAT_LIST[x].visible && AST_FORMAT_LIST[x].bits == codec) { 00645 ret = AST_FORMAT_LIST[x].desc; 00646 break; 00647 } 00648 } 00649 return ret; 00650 }
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 1314 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().
01315 { 01316 int x, ret = 0, slot; 01317 01318 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01319 slot = pref->order[x]; 01320 01321 if (!slot) 01322 break; 01323 if (formats & AST_FORMAT_LIST[slot-1].bits) { 01324 ret = AST_FORMAT_LIST[slot-1].bits; 01325 break; 01326 } 01327 } 01328 if(ret & AST_FORMAT_AUDIO_MASK) 01329 return ret; 01330 01331 if (option_debug > 3) 01332 ast_log(LOG_DEBUG, "Could not find preferred codec - %s\n", find_best ? "Going for the best codec" : "Returning zero codec"); 01333 01334 return find_best ? ast_best_codec(formats) : 0; 01335 }
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 1573 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().
01574 { 01575 int len = 0; 01576 01577 /* XXX Still need speex, g723, and lpc10 XXX */ 01578 switch(format) { 01579 case AST_FORMAT_ILBC: 01580 len = (samples / 240) * 50; 01581 break; 01582 case AST_FORMAT_GSM: 01583 len = (samples / 160) * 33; 01584 break; 01585 case AST_FORMAT_G729A: 01586 len = samples / 8; 01587 break; 01588 case AST_FORMAT_SLINEAR: 01589 len = samples * 2; 01590 break; 01591 case AST_FORMAT_ULAW: 01592 case AST_FORMAT_ALAW: 01593 len = samples; 01594 break; 01595 case AST_FORMAT_G722: 01596 case AST_FORMAT_ADPCM: 01597 case AST_FORMAT_G726: 01598 case AST_FORMAT_G726_AAL2: 01599 len = samples / 2; 01600 break; 01601 default: 01602 ast_log(LOG_WARNING, "Unable to calculate sample length for format %s\n", ast_getformatname(format)); 01603 } 01604 01605 return len; 01606 }
int ast_codec_get_samples | ( | struct ast_frame * | f | ) |
Returns the number of samples contained in the frame.
Definition at line 1530 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().
01531 { 01532 int samples=0; 01533 switch(f->subclass) { 01534 case AST_FORMAT_SPEEX: 01535 samples = speex_samples(f->data, f->datalen); 01536 break; 01537 case AST_FORMAT_G723_1: 01538 samples = g723_samples(f->data, f->datalen); 01539 break; 01540 case AST_FORMAT_ILBC: 01541 samples = 240 * (f->datalen / 50); 01542 break; 01543 case AST_FORMAT_GSM: 01544 samples = 160 * (f->datalen / 33); 01545 break; 01546 case AST_FORMAT_G729A: 01547 samples = f->datalen * 8; 01548 break; 01549 case AST_FORMAT_SLINEAR: 01550 samples = f->datalen / 2; 01551 break; 01552 case AST_FORMAT_LPC10: 01553 /* assumes that the RTP packet contains one LPC10 frame */ 01554 samples = 22 * 8; 01555 samples += (((char *)(f->data))[7] & 0x1) * 8; 01556 break; 01557 case AST_FORMAT_ULAW: 01558 case AST_FORMAT_ALAW: 01559 samples = f->datalen; 01560 break; 01561 case AST_FORMAT_G722: 01562 case AST_FORMAT_ADPCM: 01563 case AST_FORMAT_G726: 01564 case AST_FORMAT_G726_AAL2: 01565 samples = f->datalen * 2; 01566 break; 01567 default: 01568 ast_log(LOG_WARNING, "Unable to calculate samples for format %s\n", ast_getformatname(f->subclass)); 01569 } 01570 return samples; 01571 }
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 1173 of file frame.c.
References ast_codec_pref_remove(), AST_FORMAT_LIST, and ast_codec_pref::order.
Referenced by ast_parse_allow_disallow().
01174 { 01175 int x, newindex = 0; 01176 01177 ast_codec_pref_remove(pref, format); 01178 01179 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01180 if(AST_FORMAT_LIST[x].bits == format) { 01181 newindex = x + 1; 01182 break; 01183 } 01184 } 01185 01186 if(newindex) { 01187 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01188 if(!pref->order[x]) { 01189 pref->order[x] = newindex; 01190 break; 01191 } 01192 } 01193 } 01194 01195 return x; 01196 }
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 1075 of file frame.c.
References ast_codec_pref::order.
Referenced by check_access(), create_addr(), dump_prefs(), and socket_process().
01076 { 01077 int x, differential = (int) 'A', mem; 01078 char *from, *to; 01079 01080 if(right) { 01081 from = pref->order; 01082 to = buf; 01083 mem = size; 01084 } else { 01085 to = pref->order; 01086 from = buf; 01087 mem = 32; 01088 } 01089 01090 memset(to, 0, mem); 01091 for (x = 0; x < 32 ; x++) { 01092 if(!from[x]) 01093 break; 01094 to[x] = right ? (from[x] + differential) : (from[x] - differential); 01095 } 01096 }
struct ast_format_list ast_codec_pref_getsize | ( | struct ast_codec_pref * | pref, | |
int | format | |||
) |
Get packet size for codec.
Definition at line 1275 of file frame.c.
References AST_FORMAT_LIST, ast_format_list::bits, and format.
Referenced by add_codec_to_sdp(), ast_rtp_bridge(), ast_rtp_codec_setpref(), ast_rtp_write(), handle_open_receive_channel_ack_message(), and transmit_connect().
01276 { 01277 int x, index = -1, framems = 0; 01278 struct ast_format_list fmt = {0}; 01279 01280 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01281 if(AST_FORMAT_LIST[x].bits == format) { 01282 fmt = AST_FORMAT_LIST[x]; 01283 index = x; 01284 break; 01285 } 01286 } 01287 01288 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01289 if(pref->order[x] == (index + 1)) { 01290 framems = pref->framing[x]; 01291 break; 01292 } 01293 } 01294 01295 /* size validation */ 01296 if(!framems) 01297 framems = AST_FORMAT_LIST[index].def_ms; 01298 01299 if(AST_FORMAT_LIST[index].inc_ms && framems % AST_FORMAT_LIST[index].inc_ms) /* avoid division by zero */ 01300 framems -= framems % AST_FORMAT_LIST[index].inc_ms; 01301 01302 if(framems < AST_FORMAT_LIST[index].min_ms) 01303 framems = AST_FORMAT_LIST[index].min_ms; 01304 01305 if(framems > AST_FORMAT_LIST[index].max_ms) 01306 framems = AST_FORMAT_LIST[index].max_ms; 01307 01308 fmt.cur_ms = framems; 01309 01310 return fmt; 01311 }
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 1133 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().
01134 { 01135 int slot = 0; 01136 01137 01138 if((index >= 0) && (index < sizeof(pref->order))) { 01139 slot = pref->order[index]; 01140 } 01141 01142 return slot ? AST_FORMAT_LIST[slot-1].bits : 0; 01143 }
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 1199 of file frame.c.
References ARRAY_LEN, AST_FORMAT_LIST, ast_codec_pref::framing, and ast_codec_pref::order.
Referenced by create_addr().
01200 { 01201 int x, newindex = 0; 01202 01203 /* First step is to get the codecs "index number" */ 01204 for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { 01205 if (AST_FORMAT_LIST[x].bits == format) { 01206 newindex = x + 1; 01207 break; 01208 } 01209 } 01210 /* Done if its unknown */ 01211 if (!newindex) 01212 return; 01213 01214 /* Now find any existing occurrence, or the end */ 01215 for (x = 0; x < 32; x++) { 01216 if (!pref->order[x] || pref->order[x] == newindex) 01217 break; 01218 } 01219 01220 if (only_if_existing && !pref->order[x]) 01221 return; 01222 01223 /* Move down to make space to insert - either all the way to the end, 01224 or as far as the existing location (which will be overwritten) */ 01225 for (; x > 0; x--) { 01226 pref->order[x] = pref->order[x - 1]; 01227 pref->framing[x] = pref->framing[x - 1]; 01228 } 01229 01230 /* And insert the new entry */ 01231 pref->order[0] = newindex; 01232 pref->framing[0] = 0; /* ? */ 01233 }
void ast_codec_pref_remove | ( | struct ast_codec_pref * | pref, | |
int | format | |||
) |
Remove audio a codec from a preference list.
Definition at line 1146 of file frame.c.
References AST_FORMAT_LIST, and ast_codec_pref::order.
Referenced by ast_codec_pref_append(), and ast_parse_allow_disallow().
01147 { 01148 struct ast_codec_pref oldorder; 01149 int x, y = 0; 01150 int slot; 01151 int size; 01152 01153 if(!pref->order[0]) 01154 return; 01155 01156 memcpy(&oldorder, pref, sizeof(oldorder)); 01157 memset(pref, 0, sizeof(*pref)); 01158 01159 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01160 slot = oldorder.order[x]; 01161 size = oldorder.framing[x]; 01162 if(! slot) 01163 break; 01164 if(AST_FORMAT_LIST[slot-1].bits != format) { 01165 pref->order[y] = slot; 01166 pref->framing[y++] = size; 01167 } 01168 } 01169 01170 }
int ast_codec_pref_setsize | ( | struct ast_codec_pref * | pref, | |
int | format, | |||
int | framems | |||
) |
Set packet size for codec.
Definition at line 1236 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().
01237 { 01238 int x, index = -1; 01239 01240 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01241 if(AST_FORMAT_LIST[x].bits == format) { 01242 index = x; 01243 break; 01244 } 01245 } 01246 01247 if(index < 0) 01248 return -1; 01249 01250 /* size validation */ 01251 if(!framems) 01252 framems = AST_FORMAT_LIST[index].def_ms; 01253 01254 if(AST_FORMAT_LIST[index].inc_ms && framems % AST_FORMAT_LIST[index].inc_ms) /* avoid division by zero */ 01255 framems -= framems % AST_FORMAT_LIST[index].inc_ms; 01256 01257 if(framems < AST_FORMAT_LIST[index].min_ms) 01258 framems = AST_FORMAT_LIST[index].min_ms; 01259 01260 if(framems > AST_FORMAT_LIST[index].max_ms) 01261 framems = AST_FORMAT_LIST[index].max_ms; 01262 01263 01264 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 01265 if(pref->order[x] == (index + 1)) { 01266 pref->framing[x] = framems; 01267 break; 01268 } 01269 } 01270 01271 return x; 01272 }
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 1098 of file frame.c.
References ast_codec_pref_index(), and ast_getformatname().
Referenced by dump_prefs(), and socket_process().
01099 { 01100 int x, codec; 01101 size_t total_len, slen; 01102 char *formatname; 01103 01104 memset(buf,0,size); 01105 total_len = size; 01106 buf[0] = '('; 01107 total_len--; 01108 for(x = 0; x < 32 ; x++) { 01109 if(total_len <= 0) 01110 break; 01111 if(!(codec = ast_codec_pref_index(pref,x))) 01112 break; 01113 if((formatname = ast_getformatname(codec))) { 01114 slen = strlen(formatname); 01115 if(slen > total_len) 01116 break; 01117 strncat(buf, formatname, total_len - 1); /* safe */ 01118 total_len -= slen; 01119 } 01120 if(total_len && x < 31 && ast_codec_pref_index(pref , x + 1)) { 01121 strncat(buf, "|", total_len - 1); /* safe */ 01122 total_len--; 01123 } 01124 } 01125 if(total_len) { 01126 strncat(buf, ")", total_len - 1); /* safe */ 01127 total_len--; 01128 } 01129 01130 return size - total_len; 01131 }
static const char* ast_expand_codec_alias | ( | const char * | in | ) | [static] |
Definition at line 610 of file frame.c.
Referenced by ast_getformatbyname().
00611 { 00612 int x; 00613 00614 for (x = 0; x < sizeof(ast_codec_alias_table) / sizeof(ast_codec_alias_table[0]); x++) { 00615 if(!strcmp(in,ast_codec_alias_table[x].alias)) 00616 return ast_codec_alias_table[x].realname; 00617 } 00618 return in; 00619 }
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 1608 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().
01609 { 01610 int count; 01611 short *fdata = f->data; 01612 short adjust_value = abs(adjustment); 01613 01614 if ((f->frametype != AST_FRAME_VOICE) || (f->subclass != AST_FORMAT_SLINEAR)) 01615 return -1; 01616 01617 if (!adjustment) 01618 return 0; 01619 01620 for (count = 0; count < f->samples; count++) { 01621 if (adjustment > 0) { 01622 ast_slinear_saturated_multiply(&fdata[count], &adjust_value); 01623 } else if (adjustment < 0) { 01624 ast_slinear_saturated_divide(&fdata[count], &adjust_value); 01625 } 01626 } 01627 01628 return 0; 01629 }
void ast_frame_dump | ( | const char * | name, | |
struct ast_frame * | f, | |||
char * | prefix | |||
) |
Dump a frame for debugging purposes
Definition at line 793 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_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_RADIO_KEY, AST_CONTROL_RADIO_UNKEY, AST_CONTROL_RING, AST_CONTROL_RINGING, 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_verbose(), COLOR_BLACK, COLOR_BRCYAN, COLOR_BRGREEN, COLOR_BRMAGENTA, COLOR_BRRED, COLOR_YELLOW, f, and term_color().
Referenced by __ast_read(), and ast_write().
00794 { 00795 const char noname[] = "unknown"; 00796 char ftype[40] = "Unknown Frametype"; 00797 char cft[80]; 00798 char subclass[40] = "Unknown Subclass"; 00799 char csub[80]; 00800 char moreinfo[40] = ""; 00801 char cn[60]; 00802 char cp[40]; 00803 char cmn[40]; 00804 00805 if (!name) 00806 name = noname; 00807 00808 00809 if (!f) { 00810 ast_verbose("%s [ %s (NULL) ] [%s]\n", 00811 term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)), 00812 term_color(cft, "HANGUP", COLOR_BRRED, COLOR_BLACK, sizeof(cft)), 00813 term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); 00814 return; 00815 } 00816 /* XXX We should probably print one each of voice and video when the format changes XXX */ 00817 if (f->frametype == AST_FRAME_VOICE) 00818 return; 00819 if (f->frametype == AST_FRAME_VIDEO) 00820 return; 00821 switch(f->frametype) { 00822 case AST_FRAME_DTMF_BEGIN: 00823 strcpy(ftype, "DTMF Begin"); 00824 subclass[0] = f->subclass; 00825 subclass[1] = '\0'; 00826 break; 00827 case AST_FRAME_DTMF_END: 00828 strcpy(ftype, "DTMF End"); 00829 subclass[0] = f->subclass; 00830 subclass[1] = '\0'; 00831 break; 00832 case AST_FRAME_CONTROL: 00833 strcpy(ftype, "Control"); 00834 switch(f->subclass) { 00835 case AST_CONTROL_HANGUP: 00836 strcpy(subclass, "Hangup"); 00837 break; 00838 case AST_CONTROL_RING: 00839 strcpy(subclass, "Ring"); 00840 break; 00841 case AST_CONTROL_RINGING: 00842 strcpy(subclass, "Ringing"); 00843 break; 00844 case AST_CONTROL_ANSWER: 00845 strcpy(subclass, "Answer"); 00846 break; 00847 case AST_CONTROL_BUSY: 00848 strcpy(subclass, "Busy"); 00849 break; 00850 case AST_CONTROL_TAKEOFFHOOK: 00851 strcpy(subclass, "Take Off Hook"); 00852 break; 00853 case AST_CONTROL_OFFHOOK: 00854 strcpy(subclass, "Line Off Hook"); 00855 break; 00856 case AST_CONTROL_CONGESTION: 00857 strcpy(subclass, "Congestion"); 00858 break; 00859 case AST_CONTROL_FLASH: 00860 strcpy(subclass, "Flash"); 00861 break; 00862 case AST_CONTROL_WINK: 00863 strcpy(subclass, "Wink"); 00864 break; 00865 case AST_CONTROL_OPTION: 00866 strcpy(subclass, "Option"); 00867 break; 00868 case AST_CONTROL_RADIO_KEY: 00869 strcpy(subclass, "Key Radio"); 00870 break; 00871 case AST_CONTROL_RADIO_UNKEY: 00872 strcpy(subclass, "Unkey Radio"); 00873 break; 00874 case AST_CONTROL_PROGRESS: 00875 strcpy(subclass, "Call Progress"); 00876 break; 00877 case AST_CONTROL_PROCEEDING: 00878 strcpy(subclass, "Proceeding"); 00879 break; 00880 case AST_CONTROL_HOLD: 00881 strcpy(subclass, "Hold"); 00882 break; 00883 case AST_CONTROL_UNHOLD: 00884 strcpy(subclass, "UnHold"); 00885 break; 00886 case -1: 00887 strcpy(subclass, "Stop generators"); 00888 break; 00889 default: 00890 snprintf(subclass, sizeof(subclass), "Unknown control '%d'", f->subclass); 00891 } 00892 break; 00893 case AST_FRAME_NULL: 00894 strcpy(ftype, "Null Frame"); 00895 strcpy(subclass, "N/A"); 00896 break; 00897 case AST_FRAME_IAX: 00898 /* Should never happen */ 00899 strcpy(ftype, "IAX Specific"); 00900 snprintf(subclass, sizeof(subclass), "IAX Frametype %d", f->subclass); 00901 break; 00902 case AST_FRAME_TEXT: 00903 strcpy(ftype, "Text"); 00904 strcpy(subclass, "N/A"); 00905 ast_copy_string(moreinfo, f->data, sizeof(moreinfo)); 00906 break; 00907 case AST_FRAME_IMAGE: 00908 strcpy(ftype, "Image"); 00909 snprintf(subclass, sizeof(subclass), "Image format %s\n", ast_getformatname(f->subclass)); 00910 break; 00911 case AST_FRAME_HTML: 00912 strcpy(ftype, "HTML"); 00913 switch(f->subclass) { 00914 case AST_HTML_URL: 00915 strcpy(subclass, "URL"); 00916 ast_copy_string(moreinfo, f->data, sizeof(moreinfo)); 00917 break; 00918 case AST_HTML_DATA: 00919 strcpy(subclass, "Data"); 00920 break; 00921 case AST_HTML_BEGIN: 00922 strcpy(subclass, "Begin"); 00923 break; 00924 case AST_HTML_END: 00925 strcpy(subclass, "End"); 00926 break; 00927 case AST_HTML_LDCOMPLETE: 00928 strcpy(subclass, "Load Complete"); 00929 break; 00930 case AST_HTML_NOSUPPORT: 00931 strcpy(subclass, "No Support"); 00932 break; 00933 case AST_HTML_LINKURL: 00934 strcpy(subclass, "Link URL"); 00935 ast_copy_string(moreinfo, f->data, sizeof(moreinfo)); 00936 break; 00937 case AST_HTML_UNLINK: 00938 strcpy(subclass, "Unlink"); 00939 break; 00940 case AST_HTML_LINKREJECT: 00941 strcpy(subclass, "Link Reject"); 00942 break; 00943 default: 00944 snprintf(subclass, sizeof(subclass), "Unknown HTML frame '%d'\n", f->subclass); 00945 break; 00946 } 00947 break; 00948 case AST_FRAME_MODEM: 00949 strcpy(ftype, "Modem"); 00950 switch (f->subclass) { 00951 case AST_MODEM_T38: 00952 strcpy(subclass, "T.38"); 00953 break; 00954 case AST_MODEM_V150: 00955 strcpy(subclass, "V.150"); 00956 break; 00957 default: 00958 snprintf(subclass, sizeof(subclass), "Unknown MODEM frame '%d'\n", f->subclass); 00959 break; 00960 } 00961 break; 00962 default: 00963 snprintf(ftype, sizeof(ftype), "Unknown Frametype '%d'", f->frametype); 00964 } 00965 if (!ast_strlen_zero(moreinfo)) 00966 ast_verbose("%s [ TYPE: %s (%d) SUBCLASS: %s (%d) '%s' ] [%s]\n", 00967 term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)), 00968 term_color(cft, ftype, COLOR_BRRED, COLOR_BLACK, sizeof(cft)), 00969 f->frametype, 00970 term_color(csub, subclass, COLOR_BRCYAN, COLOR_BLACK, sizeof(csub)), 00971 f->subclass, 00972 term_color(cmn, moreinfo, COLOR_BRGREEN, COLOR_BLACK, sizeof(cmn)), 00973 term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); 00974 else 00975 ast_verbose("%s [ TYPE: %s (%d) SUBCLASS: %s (%d) ] [%s]\n", 00976 term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)), 00977 term_color(cft, ftype, COLOR_BRRED, COLOR_BLACK, sizeof(cft)), 00978 f->frametype, 00979 term_color(csub, subclass, COLOR_BRCYAN, COLOR_BLACK, sizeof(csub)), 00980 f->subclass, 00981 term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); 00982 }
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 354 of file frame.c.
References ast_dsp_frame_freed(), ast_filestream_frame_freed(), AST_FRFLAG_FROM_DSP, AST_FRFLAG_FROM_FILESTREAM, 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_threadstorage_get(), ast_translate_frame_freed(), ast_frame::data, frame_cache, FRAME_CACHE_MAX_SIZE, frames, free, ast_frame::mallocd, ast_frame::offset, and ast_frame::src.
Referenced by mixmonitor_thread().
00355 { 00356 if (ast_test_flag(fr, AST_FRFLAG_FROM_TRANSLATOR)) { 00357 ast_translate_frame_freed(fr); 00358 } else if (ast_test_flag(fr, AST_FRFLAG_FROM_DSP)) { 00359 ast_dsp_frame_freed(fr); 00360 } else if (ast_test_flag(fr, AST_FRFLAG_FROM_FILESTREAM)) { 00361 ast_filestream_frame_freed(fr); 00362 } 00363 00364 if (!fr->mallocd) 00365 return; 00366 00367 #if !defined(LOW_MEMORY) 00368 if (cache && fr->mallocd == AST_MALLOCD_HDR) { 00369 /* Cool, only the header is malloc'd, let's just cache those for now 00370 * to keep things simple... */ 00371 struct ast_frame_cache *frames; 00372 00373 if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames))) 00374 && frames->size < FRAME_CACHE_MAX_SIZE) { 00375 AST_LIST_INSERT_HEAD(&frames->list, fr, frame_list); 00376 frames->size++; 00377 return; 00378 } 00379 } 00380 #endif 00381 00382 if (fr->mallocd & AST_MALLOCD_DATA) { 00383 if (fr->data) 00384 free(fr->data - fr->offset); 00385 } 00386 if (fr->mallocd & AST_MALLOCD_SRC) { 00387 if (fr->src) 00388 free((char *)fr->src); 00389 } 00390 if (fr->mallocd & AST_MALLOCD_HDR) { 00391 #ifdef TRACE_FRAMES 00392 AST_LIST_LOCK(&headerlist); 00393 headers--; 00394 AST_LIST_REMOVE(&headerlist, fr, frame_list); 00395 AST_LIST_UNLOCK(&headerlist); 00396 #endif 00397 free(fr); 00398 } 00399 }
static struct ast_frame* ast_frame_header_new | ( | void | ) | [static] |
Definition at line 306 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, ast_threadstorage_get(), f, frame_cache, and frames.
Referenced by ast_frisolate().
00307 { 00308 struct ast_frame *f; 00309 00310 #if !defined(LOW_MEMORY) 00311 struct ast_frame_cache *frames; 00312 00313 if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) { 00314 if ((f = AST_LIST_REMOVE_HEAD(&frames->list, frame_list))) { 00315 size_t mallocd_len = f->mallocd_hdr_len; 00316 memset(f, 0, sizeof(*f)); 00317 f->mallocd_hdr_len = mallocd_len; 00318 f->mallocd = AST_MALLOCD_HDR; 00319 frames->size--; 00320 return f; 00321 } 00322 } 00323 if (!(f = ast_calloc_cache(1, sizeof(*f)))) 00324 return NULL; 00325 #else 00326 if (!(f = ast_calloc(1, sizeof(*f)))) 00327 return NULL; 00328 #endif 00329 00330 f->mallocd_hdr_len = sizeof(*f); 00331 #ifdef TRACE_FRAMES 00332 AST_LIST_LOCK(&headerlist); 00333 headers++; 00334 AST_LIST_INSERT_HEAD(&headerlist, f, frame_list); 00335 AST_LIST_UNLOCK(&headerlist); 00336 #endif 00337 00338 return f; 00339 }
Sums two frames of audio samples.
f1 | The first frame (which will contain the result) | |
f2 | The second frame |
Definition at line 1631 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.
01632 { 01633 int count; 01634 short *data1, *data2; 01635 01636 if ((f1->frametype != AST_FRAME_VOICE) || (f1->subclass != AST_FORMAT_SLINEAR)) 01637 return -1; 01638 01639 if ((f2->frametype != AST_FRAME_VOICE) || (f2->subclass != AST_FORMAT_SLINEAR)) 01640 return -1; 01641 01642 if (f1->samples != f2->samples) 01643 return -1; 01644 01645 for (count = 0, data1 = f1->data, data2 = f2->data; 01646 count < f1->samples; 01647 count++, data1++, data2++) 01648 ast_slinear_saturated_add(data1, data2); 01649 01650 return 0; 01651 }
Copies a frame.
fr | frame to copy Duplicates a frame -- should only rarely be used, typically frisolate is good enough |
Definition at line 465 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::data, ast_frame::datalen, ast_frame::delivery, f, frame_cache, 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_queue_frame(), ast_jb_put(), ast_rtp_write(), ast_slinfactory_feed(), audiohook_read_frame_single(), autoservice_run(), recordthread(), and rpt().
00466 { 00467 struct ast_frame *out = NULL; 00468 int len, srclen = 0; 00469 void *buf = NULL; 00470 00471 #if !defined(LOW_MEMORY) 00472 struct ast_frame_cache *frames; 00473 #endif 00474 00475 /* Start with standard stuff */ 00476 len = sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen; 00477 /* If we have a source, add space for it */ 00478 /* 00479 * XXX Watch out here - if we receive a src which is not terminated 00480 * properly, we can be easily attacked. Should limit the size we deal with. 00481 */ 00482 if (f->src) 00483 srclen = strlen(f->src); 00484 if (srclen > 0) 00485 len += srclen + 1; 00486 00487 #if !defined(LOW_MEMORY) 00488 if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) { 00489 AST_LIST_TRAVERSE_SAFE_BEGIN(&frames->list, out, frame_list) { 00490 if (out->mallocd_hdr_len >= len) { 00491 size_t mallocd_len = out->mallocd_hdr_len; 00492 AST_LIST_REMOVE_CURRENT(&frames->list, frame_list); 00493 memset(out, 0, sizeof(*out)); 00494 out->mallocd_hdr_len = mallocd_len; 00495 buf = out; 00496 frames->size--; 00497 break; 00498 } 00499 } 00500 AST_LIST_TRAVERSE_SAFE_END 00501 } 00502 #endif 00503 00504 if (!buf) { 00505 if (!(buf = ast_calloc_cache(1, len))) 00506 return NULL; 00507 out = buf; 00508 out->mallocd_hdr_len = len; 00509 } 00510 00511 out->frametype = f->frametype; 00512 out->subclass = f->subclass; 00513 out->datalen = f->datalen; 00514 out->samples = f->samples; 00515 out->delivery = f->delivery; 00516 /* Set us as having malloc'd header only, so it will eventually 00517 get freed. */ 00518 out->mallocd = AST_MALLOCD_HDR; 00519 out->offset = AST_FRIENDLY_OFFSET; 00520 if (out->datalen) { 00521 out->data = buf + sizeof(*out) + AST_FRIENDLY_OFFSET; 00522 memcpy(out->data, f->data, out->datalen); 00523 } 00524 if (srclen > 0) { 00525 /* This may seem a little strange, but it's to avoid a gcc (4.2.4) compiler warning */ 00526 char *src; 00527 out->src = buf + sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen; 00528 src = (char *) out->src; 00529 /* Must have space since we allocated for it */ 00530 strcpy(src, f->src); 00531 } 00532 ast_copy_flags(out, f, AST_FRFLAG_HAS_TIMING_INFO); 00533 out->ts = f->ts; 00534 out->len = f->len; 00535 out->seqno = f->seqno; 00536 return out; 00537 }
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 406 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().
00407 { 00408 struct ast_frame *out; 00409 void *newdata; 00410 00411 ast_clear_flag(fr, AST_FRFLAG_FROM_TRANSLATOR); 00412 ast_clear_flag(fr, AST_FRFLAG_FROM_DSP); 00413 00414 if (!(fr->mallocd & AST_MALLOCD_HDR)) { 00415 /* Allocate a new header if needed */ 00416 if (!(out = ast_frame_header_new())) 00417 return NULL; 00418 out->frametype = fr->frametype; 00419 out->subclass = fr->subclass; 00420 out->datalen = fr->datalen; 00421 out->samples = fr->samples; 00422 out->offset = fr->offset; 00423 out->data = fr->data; 00424 /* Copy the timing data */ 00425 ast_copy_flags(out, fr, AST_FRFLAG_HAS_TIMING_INFO); 00426 if (ast_test_flag(fr, AST_FRFLAG_HAS_TIMING_INFO)) { 00427 out->ts = fr->ts; 00428 out->len = fr->len; 00429 out->seqno = fr->seqno; 00430 } 00431 } else 00432 out = fr; 00433 00434 if (!(fr->mallocd & AST_MALLOCD_SRC)) { 00435 if (fr->src) { 00436 if (!(out->src = ast_strdup(fr->src))) { 00437 if (out != fr) 00438 free(out); 00439 return NULL; 00440 } 00441 } 00442 } else 00443 out->src = fr->src; 00444 00445 if (!(fr->mallocd & AST_MALLOCD_DATA)) { 00446 if (!(newdata = ast_malloc(fr->datalen + AST_FRIENDLY_OFFSET))) { 00447 if (out->src != fr->src) 00448 free((void *) out->src); 00449 if (out != fr) 00450 free(out); 00451 return NULL; 00452 } 00453 newdata += AST_FRIENDLY_OFFSET; 00454 out->offset = AST_FRIENDLY_OFFSET; 00455 out->datalen = fr->datalen; 00456 memcpy(newdata, fr->data, fr->datalen); 00457 out->data = newdata; 00458 } 00459 00460 out->mallocd = AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA; 00461 00462 return out; 00463 }
struct ast_format_list* ast_get_format_list | ( | size_t * | size | ) |
Definition at line 555 of file frame.c.
References AST_FORMAT_LIST.
00556 { 00557 *size = (sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0])); 00558 return AST_FORMAT_LIST; 00559 }
struct ast_format_list* ast_get_format_list_index | ( | int | index | ) |
Definition at line 550 of file frame.c.
References AST_FORMAT_LIST.
00551 { 00552 return &AST_FORMAT_LIST[index]; 00553 }
int ast_getformatbyname | ( | const char * | name | ) |
Gets a format from a name.
name | string of format |
Definition at line 621 of file frame.c.
References ast_expand_codec_alias(), AST_FORMAT_LIST, and format.
Referenced by ast_parse_allow_disallow(), iax_template_parse(), reload_config(), and try_suggested_sip_codec().
00622 { 00623 int x, all, format = 0; 00624 00625 all = strcasecmp(name, "all") ? 0 : 1; 00626 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 00627 if(AST_FORMAT_LIST[x].visible && (all || 00628 !strcasecmp(AST_FORMAT_LIST[x].name,name) || 00629 !strcasecmp(AST_FORMAT_LIST[x].name,ast_expand_codec_alias(name)))) { 00630 format |= AST_FORMAT_LIST[x].bits; 00631 if(!all) 00632 break; 00633 } 00634 } 00635 00636 return format; 00637 }
char* ast_getformatname | ( | int | format | ) |
Get the name of a format.
format | id of format |
Definition at line 561 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(), dahdi_read(), 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(), and socket_process().
00562 { 00563 int x; 00564 char *ret = "unknown"; 00565 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 00566 if(AST_FORMAT_LIST[x].visible && AST_FORMAT_LIST[x].bits == format) { 00567 ret = AST_FORMAT_LIST[x].name; 00568 break; 00569 } 00570 } 00571 return ret; 00572 }
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 574 of file frame.c.
References AST_FORMAT_LIST, ast_format_list::bits, len(), name, and ast_format_list::visible.
Referenced by __ast_read(), __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(), set_format(), sip_new(), sip_request_call(), sip_show_channel(), sip_show_settings(), and sip_write().
00575 { 00576 int x; 00577 unsigned len; 00578 char *start, *end = buf; 00579 00580 if (!size) 00581 return buf; 00582 snprintf(end, size, "0x%x (", format); 00583 len = strlen(end); 00584 end += len; 00585 size -= len; 00586 start = end; 00587 for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { 00588 if (AST_FORMAT_LIST[x].visible && (AST_FORMAT_LIST[x].bits & format)) { 00589 snprintf(end, size,"%s|",AST_FORMAT_LIST[x].name); 00590 len = strlen(end); 00591 end += len; 00592 size -= len; 00593 } 00594 } 00595 if (start == end) 00596 snprintf(start, size, "nothing)"); 00597 else if (size > 1) 00598 *(end -1) = ')'; 00599 return buf; 00600 }
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 1337 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, and parse().
Referenced by action_originate(), apply_outgoing(), build_device(), build_peer(), build_user(), gtalk_create_member(), gtalk_load_config(), reload_config(), set_config(), and update_common_options().
01338 { 01339 char *parse = NULL, *this = NULL, *psize = NULL; 01340 int format = 0, framems = 0; 01341 01342 parse = ast_strdupa(list); 01343 while ((this = strsep(&parse, ","))) { 01344 framems = 0; 01345 if ((psize = strrchr(this, ':'))) { 01346 *psize++ = '\0'; 01347 if (option_debug) 01348 ast_log(LOG_DEBUG,"Packetization for codec: %s is %s\n", this, psize); 01349 framems = atoi(psize); 01350 if (framems < 0) 01351 framems = 0; 01352 } 01353 if (!(format = ast_getformatbyname(this))) { 01354 ast_log(LOG_WARNING, "Cannot %s unknown format '%s'\n", allowing ? "allow" : "disallow", this); 01355 continue; 01356 } 01357 01358 if (mask) { 01359 if (allowing) 01360 *mask |= format; 01361 else 01362 *mask &= ~format; 01363 } 01364 01365 /* Set up a preference list for audio. Do not include video in preferences 01366 since we can not transcode video and have to use whatever is offered 01367 */ 01368 if (pref && (format & AST_FORMAT_AUDIO_MASK)) { 01369 if (strcasecmp(this, "all")) { 01370 if (allowing) { 01371 ast_codec_pref_append(pref, format); 01372 ast_codec_pref_setsize(pref, format, framems); 01373 } 01374 else 01375 ast_codec_pref_remove(pref, format); 01376 } else if (!allowing) { 01377 memset(pref, 0, sizeof(*pref)); 01378 } 01379 } 01380 } 01381 }
void ast_smoother_free | ( | struct ast_smoother * | s | ) |
int ast_smoother_get_flags | ( | struct ast_smoother * | s | ) |
struct ast_smoother* ast_smoother_new | ( | int | size | ) |
Definition at line 191 of file frame.c.
References ast_malloc, ast_smoother_reset(), and s.
Referenced by ast_rtp_codec_setpref(), and ast_rtp_write().
00192 { 00193 struct ast_smoother *s; 00194 if (size < 1) 00195 return NULL; 00196 if ((s = ast_malloc(sizeof(*s)))) 00197 ast_smoother_reset(s, size); 00198 return s; 00199 }
struct ast_frame* ast_smoother_read | ( | struct ast_smoother * | s | ) |
Definition at line 251 of file frame.c.
References AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), ast_samp2tv(), AST_SMOOTHER_FLAG_G729, ast_tvadd(), ast_tvzero(), len(), LOG_WARNING, and s.
Referenced by ast_rtp_write().
00252 { 00253 struct ast_frame *opt; 00254 int len; 00255 00256 /* IF we have an optimization frame, send it */ 00257 if (s->opt) { 00258 if (s->opt->offset < AST_FRIENDLY_OFFSET) 00259 ast_log(LOG_WARNING, "Returning a frame of inappropriate offset (%d).\n", 00260 s->opt->offset); 00261 opt = s->opt; 00262 s->opt = NULL; 00263 return opt; 00264 } 00265 00266 /* Make sure we have enough data */ 00267 if (s->len < s->size) { 00268 /* Or, if this is a G.729 frame with VAD on it, send it immediately anyway */ 00269 if (!((s->flags & AST_SMOOTHER_FLAG_G729) && (s->size % 10))) 00270 return NULL; 00271 } 00272 len = s->size; 00273 if (len > s->len) 00274 len = s->len; 00275 /* Make frame */ 00276 s->f.frametype = AST_FRAME_VOICE; 00277 s->f.subclass = s->format; 00278 s->f.data = s->framedata + AST_FRIENDLY_OFFSET; 00279 s->f.offset = AST_FRIENDLY_OFFSET; 00280 s->f.datalen = len; 00281 /* Samples will be improper given VAD, but with VAD the concept really doesn't even exist */ 00282 s->f.samples = len * s->samplesperbyte; /* XXX rounding */ 00283 s->f.delivery = s->delivery; 00284 /* Fill Data */ 00285 memcpy(s->f.data, s->data, len); 00286 s->len -= len; 00287 /* Move remaining data to the front if applicable */ 00288 if (s->len) { 00289 /* In principle this should all be fine because if we are sending 00290 G.729 VAD, the next timestamp will take over anyawy */ 00291 memmove(s->data, s->data + len, s->len); 00292 if (!ast_tvzero(s->delivery)) { 00293 /* If we have delivery time, increment it, otherwise, leave it at 0 */ 00294 s->delivery = ast_tvadd(s->delivery, ast_samp2tv(s->f.samples, 8000)); 00295 } 00296 } 00297 /* Return frame */ 00298 return &s->f; 00299 }
void ast_smoother_reconfigure | ( | struct ast_smoother * | s, | |
int | bytes | |||
) |
Reconfigure an existing smoother to output a different number of bytes per frame.
s | the smoother to reconfigure | |
bytes | the desired number of bytes per output frame |
Definition at line 169 of file frame.c.
References s, and smoother_frame_feed().
Referenced by ast_rtp_codec_setpref().
00170 { 00171 /* if there is no change, then nothing to do */ 00172 if (s->size == bytes) { 00173 return; 00174 } 00175 /* set the new desired output size */ 00176 s->size = bytes; 00177 /* if there is no 'optimized' frame in the smoother, 00178 * then there is nothing left to do 00179 */ 00180 if (!s->opt) { 00181 return; 00182 } 00183 /* there is an 'optimized' frame here at the old size, 00184 * but it must now be put into the buffer so the data 00185 * can be extracted at the new size 00186 */ 00187 smoother_frame_feed(s, s->opt, s->opt_needs_swap); 00188 s->opt = NULL; 00189 }
void ast_smoother_reset | ( | struct ast_smoother * | s, | |
int | bytes | |||
) |
Definition at line 163 of file frame.c.
References s.
Referenced by ast_smoother_new().
00164 { 00165 memset(s, 0, sizeof(*s)); 00166 s->size = bytes; 00167 }
void ast_smoother_set_flags | ( | struct ast_smoother * | s, | |
int | flags | |||
) |
Definition at line 206 of file frame.c.
References s.
Referenced by ast_rtp_codec_setpref(), and ast_rtp_write().
int ast_smoother_test_flag | ( | struct ast_smoother * | s, | |
int | flag | |||
) |
Definition at line 211 of file frame.c.
References s.
Referenced by ast_rtp_write().
00212 { 00213 return (s->flags & flag); 00214 }
void ast_swapcopy_samples | ( | void * | dst, | |
const void * | src, | |||
int | samples | |||
) |
Definition at line 539 of file frame.c.
Referenced by __ast_smoother_feed(), iax_frame_wrap(), phone_write_buf(), and smoother_frame_feed().
00540 { 00541 int i; 00542 unsigned short *dst_s = dst; 00543 const unsigned short *src_s = src; 00544 00545 for (i = 0; i < samples; i++) 00546 dst_s[i] = (src_s[i]<<8) | (src_s[i]>>8); 00547 }
static void frame_cache_cleanup | ( | void * | data | ) | [static] |
Definition at line 342 of file frame.c.
References AST_LIST_REMOVE_HEAD, f, ast_frame::frame_list, frames, and free.
00343 { 00344 struct ast_frame_cache *frames = data; 00345 struct ast_frame *f; 00346 00347 while ((f = AST_LIST_REMOVE_HEAD(&frames->list, frame_list))) 00348 free(f); 00349 00350 free(frames); 00351 }
static void frame_cache_init | ( | void | ) | [static] |
static int g723_len | ( | unsigned char | buf | ) | [static] |
Definition at line 1383 of file frame.c.
References ast_log(), LOG_WARNING, type, TYPE_HIGH, TYPE_LOW, TYPE_MASK, and TYPE_SILENCE.
Referenced by g723_samples().
01384 { 01385 enum frame_type type = buf & TYPE_MASK; 01386 01387 switch(type) { 01388 case TYPE_DONTSEND: 01389 return 0; 01390 break; 01391 case TYPE_SILENCE: 01392 return 4; 01393 break; 01394 case TYPE_HIGH: 01395 return 24; 01396 break; 01397 case TYPE_LOW: 01398 return 20; 01399 break; 01400 default: 01401 ast_log(LOG_WARNING, "Badly encoded frame (%d)\n", type); 01402 } 01403 return -1; 01404 }
static int g723_samples | ( | unsigned char * | buf, | |
int | maxlen | |||
) | [static] |
Definition at line 1406 of file frame.c.
References g723_len().
Referenced by ast_codec_get_samples().
01407 { 01408 int pos = 0; 01409 int samples = 0; 01410 int res; 01411 while(pos < maxlen) { 01412 res = g723_len(buf[pos]); 01413 if (res <= 0) 01414 break; 01415 samples += 240; 01416 pos += res; 01417 } 01418 return samples; 01419 }
static unsigned char get_n_bits_at | ( | unsigned char * | data, | |
int | n, | |||
int | bit | |||
) | [static] |
Definition at line 1421 of file frame.c.
Referenced by speex_get_wb_sz_at(), and speex_samples().
01422 { 01423 int byte = bit / 8; /* byte containing first bit */ 01424 int rem = 8 - (bit % 8); /* remaining bits in first byte */ 01425 unsigned char ret = 0; 01426 01427 if (n <= 0 || n > 8) 01428 return 0; 01429 01430 if (rem < n) { 01431 ret = (data[byte] << (n - rem)); 01432 ret |= (data[byte + 1] >> (8 - n + rem)); 01433 } else { 01434 ret = (data[byte] >> (rem - n)); 01435 } 01436 01437 return (ret & (0xff >> (8 - n))); 01438 }
int init_framer | ( | void | ) |
Provided by frame.c
Definition at line 1069 of file frame.c.
References ast_cli_register_multiple(), and my_clis.
Referenced by main().
01070 { 01071 ast_cli_register_multiple(my_clis, sizeof(my_clis) / sizeof(struct ast_cli_entry)); 01072 return 0; 01073 }
static int show_codec_n | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 766 of file frame.c.
References ast_cli(), ast_codec2str(), RESULT_SHOWUSAGE, and RESULT_SUCCESS.
00767 { 00768 int codec, i, found=0; 00769 00770 if (argc != 4) 00771 return RESULT_SHOWUSAGE; 00772 00773 if (sscanf(argv[3],"%d",&codec) != 1) 00774 return RESULT_SHOWUSAGE; 00775 00776 for (i = 0; i < 32; i++) 00777 if (codec & (1 << i)) { 00778 found = 1; 00779 ast_cli(fd, "%11u (1 << %2d) %s\n",1 << i,i,ast_codec2str(1<<i)); 00780 } 00781 00782 if (!found) 00783 ast_cli(fd, "Codec %d not found\n", codec); 00784 00785 return RESULT_SUCCESS; 00786 }
static int show_codec_n_deprecated | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 744 of file frame.c.
References ast_cli(), ast_codec2str(), RESULT_SHOWUSAGE, and RESULT_SUCCESS.
00745 { 00746 int codec, i, found=0; 00747 00748 if (argc != 3) 00749 return RESULT_SHOWUSAGE; 00750 00751 if (sscanf(argv[2],"%d",&codec) != 1) 00752 return RESULT_SHOWUSAGE; 00753 00754 for (i = 0; i < 32; i++) 00755 if (codec & (1 << i)) { 00756 found = 1; 00757 ast_cli(fd, "%11u (1 << %2d) %s\n",1 << i,i,ast_codec2str(1<<i)); 00758 } 00759 00760 if (!found) 00761 ast_cli(fd, "Codec %d not found\n", codec); 00762 00763 return RESULT_SUCCESS; 00764 }
static int show_codecs | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 696 of file frame.c.
References ast_cli(), ast_codec2str(), ast_getformatname(), ast_opt_dont_warn, RESULT_SHOWUSAGE, and RESULT_SUCCESS.
00697 { 00698 int i, found=0; 00699 char hex[25]; 00700 00701 if ((argc < 3) || (argc > 4)) 00702 return RESULT_SHOWUSAGE; 00703 00704 if (!ast_opt_dont_warn) 00705 ast_cli(fd, "Disclaimer: this command is for informational purposes only.\n" 00706 "\tIt does not indicate anything about your configuration.\n"); 00707 00708 ast_cli(fd, "%11s %9s %10s TYPE %8s %s\n","INT","BINARY","HEX","NAME","DESC"); 00709 ast_cli(fd, "--------------------------------------------------------------------------------\n"); 00710 if ((argc == 3) || (!strcasecmp(argv[3],"audio"))) { 00711 found = 1; 00712 for (i=0;i<13;i++) { 00713 snprintf(hex,25,"(0x%x)",1<<i); 00714 ast_cli(fd, "%11u (1 << %2d) %10s audio %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); 00715 } 00716 } 00717 00718 if ((argc == 3) || (!strcasecmp(argv[3],"image"))) { 00719 found = 1; 00720 for (i=16;i<18;i++) { 00721 snprintf(hex,25,"(0x%x)",1<<i); 00722 ast_cli(fd, "%11u (1 << %2d) %10s image %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); 00723 } 00724 } 00725 00726 if ((argc == 3) || (!strcasecmp(argv[3],"video"))) { 00727 found = 1; 00728 for (i=18;i<22;i++) { 00729 snprintf(hex,25,"(0x%x)",1<<i); 00730 ast_cli(fd, "%11u (1 << %2d) %10s video %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); 00731 } 00732 } 00733 00734 if (! found) 00735 return RESULT_SHOWUSAGE; 00736 else 00737 return RESULT_SUCCESS; 00738 }
static int show_codecs_deprecated | ( | int | fd, | |
int | argc, | |||
char * | argv[] | |||
) | [static] |
Definition at line 652 of file frame.c.
References ast_cli(), ast_codec2str(), ast_getformatname(), ast_opt_dont_warn, RESULT_SHOWUSAGE, and RESULT_SUCCESS.
00653 { 00654 int i, found=0; 00655 char hex[25]; 00656 00657 if ((argc < 2) || (argc > 3)) 00658 return RESULT_SHOWUSAGE; 00659 00660 if (!ast_opt_dont_warn) 00661 ast_cli(fd, "Disclaimer: this command is for informational purposes only.\n" 00662 "\tIt does not indicate anything about your configuration.\n"); 00663 00664 ast_cli(fd, "%11s %9s %10s TYPE %8s %s\n","INT","BINARY","HEX","NAME","DESC"); 00665 ast_cli(fd, "--------------------------------------------------------------------------------\n"); 00666 if ((argc == 2) || (!strcasecmp(argv[1],"audio"))) { 00667 found = 1; 00668 for (i=0;i<13;i++) { 00669 snprintf(hex,25,"(0x%x)",1<<i); 00670 ast_cli(fd, "%11u (1 << %2d) %10s audio %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); 00671 } 00672 } 00673 00674 if ((argc == 2) || (!strcasecmp(argv[1],"image"))) { 00675 found = 1; 00676 for (i=16;i<18;i++) { 00677 snprintf(hex,25,"(0x%x)",1<<i); 00678 ast_cli(fd, "%11u (1 << %2d) %10s image %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); 00679 } 00680 } 00681 00682 if ((argc == 2) || (!strcasecmp(argv[1],"video"))) { 00683 found = 1; 00684 for (i=18;i<22;i++) { 00685 snprintf(hex,25,"(0x%x)",1<<i); 00686 ast_cli(fd, "%11u (1 << %2d) %10s video %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); 00687 } 00688 } 00689 00690 if (! found) 00691 return RESULT_SHOWUSAGE; 00692 else 00693 return RESULT_SUCCESS; 00694 }
static int smoother_frame_feed | ( | struct ast_smoother * | s, | |
struct ast_frame * | f, | |||
int | swap | |||
) | [static] |
Definition at line 141 of file frame.c.
References ast_log(), AST_SMOOTHER_FLAG_G729, ast_swapcopy_samples(), ast_tvzero(), f, LOG_NOTICE, and s.
Referenced by __ast_smoother_feed(), and ast_smoother_reconfigure().
00142 { 00143 if (s->flags & AST_SMOOTHER_FLAG_G729) { 00144 if (s->len % 10) { 00145 ast_log(LOG_NOTICE, "Dropping extra frame of G.729 since we already have a VAD frame at the end\n"); 00146 return 0; 00147 } 00148 } 00149 if (swap) { 00150 ast_swapcopy_samples(s->data + s->len, f->data, f->samples); 00151 } else { 00152 memcpy(s->data + s->len, f->data, f->datalen); 00153 } 00154 /* If either side is empty, reset the delivery time */ 00155 if (!s->len || ast_tvzero(f->delivery) || ast_tvzero(s->delivery)) { /* XXX really ? */ 00156 s->delivery = f->delivery; 00157 } 00158 s->len += f->datalen; 00159 00160 return 0; 00161 }
static int speex_get_wb_sz_at | ( | unsigned char * | data, | |
int | len, | |||
int | bit | |||
) | [static] |
Definition at line 1440 of file frame.c.
References ast_log(), get_n_bits_at(), and LOG_WARNING.
Referenced by speex_samples().
01441 { 01442 static int SpeexWBSubModeSz[] = { 01443 0, 36, 112, 192, 01444 352, 0, 0, 0 }; 01445 int off = bit; 01446 unsigned char c; 01447 01448 /* skip up to two wideband frames */ 01449 if (((len * 8 - off) >= 5) && 01450 get_n_bits_at(data, 1, off)) { 01451 c = get_n_bits_at(data, 3, off + 1); 01452 off += SpeexWBSubModeSz[c]; 01453 01454 if (((len * 8 - off) >= 5) && 01455 get_n_bits_at(data, 1, off)) { 01456 c = get_n_bits_at(data, 3, off + 1); 01457 off += SpeexWBSubModeSz[c]; 01458 01459 if (((len * 8 - off) >= 5) && 01460 get_n_bits_at(data, 1, off)) { 01461 ast_log(LOG_WARNING, "Encountered corrupt speex frame; too many wideband frames in a row.\n"); 01462 return -1; 01463 } 01464 } 01465 01466 } 01467 return off - bit; 01468 }
static int speex_samples | ( | unsigned char * | data, | |
int | len | |||
) | [static] |
Definition at line 1470 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().
01471 { 01472 static int SpeexSubModeSz[] = { 01473 5, 43, 119, 160, 01474 220, 300, 364, 492, 01475 79, 0, 0, 0, 01476 0, 0, 0, 0 }; 01477 static int SpeexInBandSz[] = { 01478 1, 1, 4, 4, 01479 4, 4, 4, 4, 01480 8, 8, 16, 16, 01481 32, 32, 64, 64 }; 01482 int bit = 0; 01483 int cnt = 0; 01484 int off; 01485 unsigned char c; 01486 01487 while ((len * 8 - bit) >= 5) { 01488 /* skip wideband frames */ 01489 off = speex_get_wb_sz_at(data, len, bit); 01490 if (off < 0) { 01491 ast_log(LOG_WARNING, "Had error while reading wideband frames for speex samples\n"); 01492 break; 01493 } 01494 bit += off; 01495 01496 if ((len * 8 - bit) < 5) { 01497 ast_log(LOG_WARNING, "Not enough bits remaining after wide band for speex samples.\n"); 01498 break; 01499 } 01500 01501 /* get control bits */ 01502 c = get_n_bits_at(data, 5, bit); 01503 bit += 5; 01504 01505 if (c == 15) { 01506 /* terminator */ 01507 break; 01508 } else if (c == 14) { 01509 /* in-band signal; next 4 bits contain signal id */ 01510 c = get_n_bits_at(data, 4, bit); 01511 bit += 4; 01512 bit += SpeexInBandSz[c]; 01513 } else if (c == 13) { 01514 /* user in-band; next 5 bits contain msg len */ 01515 c = get_n_bits_at(data, 5, bit); 01516 bit += 5; 01517 bit += c * 8; 01518 } else if (c > 8) { 01519 /* unknown */ 01520 break; 01521 } else { 01522 /* skip number bits for submode (less the 5 control bits) */ 01523 bit += SpeexSubModeSz[c] - 5; 01524 cnt += 160; /* new frame */ 01525 } 01526 } 01527 return cnt; 01528 }
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(), 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 }
struct ast_threadstorage frame_cache = { .once = PTHREAD_ONCE_INIT, .key_init = frame_cache_init , } [static] |
Definition at line 59 of file frame.c.
Referenced by ast_frame_free(), ast_frame_header_new(), ast_frdup(), iax_frame_free(), and iax_frame_new().
char frame_show_codec_n_usage[] [static] |
char frame_show_codecs_usage[] [static] |
struct ast_cli_entry my_clis[] [static] |