diff options
Diffstat (limited to '1.2-netsec/frame.c')
| -rw-r--r-- | 1.2-netsec/frame.c | 1301 |
1 files changed, 0 insertions, 1301 deletions
diff --git a/1.2-netsec/frame.c b/1.2-netsec/frame.c deleted file mode 100644 index fa5538f36..000000000 --- a/1.2-netsec/frame.c +++ /dev/null @@ -1,1301 +0,0 @@ -/* - * Asterisk -- An open source telephony toolkit. - * - * Copyright (C) 1999 - 2005, Digium, Inc. - * - * Mark Spencer <markster@digium.com> - * - * See http://www.asterisk.org for more information about - * the Asterisk project. Please do not directly contact - * any of the maintainers of this project for assistance; - * the project provides a web site, mailing lists and IRC - * channels for your use. - * - * This program is free software, distributed under the terms of - * the GNU General Public License Version 2. See the LICENSE file - * at the top of the source tree. - */ - -/*! \file - * - * \brief Frame manipulation routines - * - */ - -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <errno.h> -#include <stdio.h> - -#include "asterisk.h" - -ASTERISK_FILE_VERSION(__FILE__, "$Revision$") - -#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" - -#ifdef TRACE_FRAMES -static int headers = 0; -static struct ast_frame *headerlist = NULL; -AST_MUTEX_DEFINE_STATIC(framelock); -#endif - -#define SMOOTHER_SIZE 8000 - -#define TYPE_HIGH 0x0 -#define TYPE_LOW 0x1 -#define TYPE_SILENCE 0x2 -#define TYPE_DONTSEND 0x3 -#define TYPE_MASK 0x3 - -struct ast_format_list { - int visible; /*!< Can we see this entry */ - int bits; /*!< bitmask value */ - char *name; /*!< short name */ - char *desc; /*!< Description */ -}; - -struct ast_smoother { - int size; - int format; - int readdata; - int optimizablestream; - int flags; - float samplesperbyte; - struct ast_frame f; - struct timeval delivery; - char data[SMOOTHER_SIZE]; - char framedata[SMOOTHER_SIZE + AST_FRIENDLY_OFFSET]; - struct ast_frame *opt; - int len; -}; - -/*! \brief Definition of supported media formats (codecs) */ -static struct ast_format_list AST_FORMAT_LIST[] = { - { 1, AST_FORMAT_G723_1 , "g723" , "G.723.1"}, /*!< codec_g723_1.c */ - { 1, AST_FORMAT_GSM, "gsm" , "GSM"}, /*!< codec_gsm.c */ - { 1, AST_FORMAT_ULAW, "ulaw", "G.711 u-law" }, /*!< codec_ulaw.c */ - { 1, AST_FORMAT_ALAW, "alaw", "G.711 A-law" }, /*!< codec_alaw.c */ - { 1, AST_FORMAT_G726, "g726", "G.726" }, /*!< codec_g726.c */ - { 1, AST_FORMAT_ADPCM, "adpcm" , "ADPCM"}, /*!< codec_adpcm.c */ - { 1, AST_FORMAT_SLINEAR, "slin", "16 bit Signed Linear PCM"}, /*!< */ - { 1, AST_FORMAT_LPC10, "lpc10", "LPC10" }, /*!< codec_lpc10.c */ - { 1, AST_FORMAT_G729A, "g729", "G.729A" }, /*!< Binary commercial distribution */ - { 1, AST_FORMAT_SPEEX, "speex", "SpeeX" }, /*!< codec_speex.c */ - { 1, AST_FORMAT_ILBC, "ilbc", "iLBC"}, /*!< codec_ilbc.c */ - { 0, 0, "nothing", "undefined" }, - { 0, 0, "nothing", "undefined" }, - { 0, 0, "nothing", "undefined" }, - { 0, 0, "nothing", "undefined" }, - { 0, AST_FORMAT_MAX_AUDIO, "maxaudio", "Maximum audio format" }, - { 1, AST_FORMAT_JPEG, "jpeg", "JPEG image"}, /*!< See format_jpeg.c */ - { 1, AST_FORMAT_PNG, "png", "PNG image"}, /*!< Image format */ - { 1, AST_FORMAT_H261, "h261", "H.261 Video" }, /*!< Passthrough */ - { 1, AST_FORMAT_H263, "h263", "H.263 Video" }, /*!< Passthrough support, see format_h263.c */ - { 1, AST_FORMAT_H263_PLUS, "h263p", "H.263+ Video" }, /*!< See format_h263.c */ - { 0, 0, "nothing", "undefined" }, - { 0, 0, "nothing", "undefined" }, - { 0, 0, "nothing", "undefined" }, - { 0, 0, "nothing", "undefined" }, - { 0, AST_FORMAT_MAX_VIDEO, "maxvideo", "Maximum video format" }, -}; - -void ast_smoother_reset(struct ast_smoother *s, int size) -{ - memset(s, 0, sizeof(struct ast_smoother)); - s->size = size; -} - -struct ast_smoother *ast_smoother_new(int size) -{ - struct ast_smoother *s; - if (size < 1) - return NULL; - s = malloc(sizeof(struct ast_smoother)); - if (s) - ast_smoother_reset(s, size); - return s; -} - -int ast_smoother_get_flags(struct ast_smoother *s) -{ - return s->flags; -} - -void ast_smoother_set_flags(struct ast_smoother *s, int flags) -{ - s->flags = flags; -} - -int __ast_smoother_feed(struct ast_smoother *s, struct ast_frame *f, int swap) -{ - if (f->frametype != AST_FRAME_VOICE) { - ast_log(LOG_WARNING, "Huh? Can't smooth a non-voice frame!\n"); - return -1; - } - if (!s->format) { - s->format = f->subclass; - s->samplesperbyte = (float)f->samples / (float)f->datalen; - } else if (s->format != f->subclass) { - ast_log(LOG_WARNING, "Smoother was working on %d format frames, now trying to feed %d?\n", s->format, f->subclass); - return -1; - } - if (s->len + f->datalen > SMOOTHER_SIZE) { - ast_log(LOG_WARNING, "Out of smoother space\n"); - return -1; - } - if (((f->datalen == s->size) || ((f->datalen < 10) && (s->flags & AST_SMOOTHER_FLAG_G729))) - && !s->opt && (f->offset >= AST_MIN_OFFSET)) { - if (!s->len) { - /* Optimize by sending the frame we just got - on the next read, thus eliminating the douple - copy */ - s->opt = f; - return 0; - } else { - s->optimizablestream++; - if (s->optimizablestream > 10) { - /* For the past 10 rounds, we have input and output - frames of the correct size for this smoother, yet - we were unable to optimize because there was still - some cruft left over. Lets just drop the cruft so - we can move to a fully optimized path */ - s->len = 0; - s->opt = f; - return 0; - } - } - } else - s->optimizablestream = 0; - if (s->flags & AST_SMOOTHER_FLAG_G729) { - if (s->len % 10) { - ast_log(LOG_NOTICE, "Dropping extra frame of G.729 since we already have a VAD frame at the end\n"); - return 0; - } - } - if (swap) - ast_swapcopy_samples(s->data+s->len, f->data, f->samples); - else - memcpy(s->data + s->len, f->data, f->datalen); - /* If either side is empty, reset the delivery time */ - if (!s->len || ast_tvzero(f->delivery) || ast_tvzero(s->delivery)) /* XXX really ? */ - s->delivery = f->delivery; - s->len += f->datalen; - return 0; -} - -struct ast_frame *ast_smoother_read(struct ast_smoother *s) -{ - struct ast_frame *opt; - int len; - /* IF we have an optimization frame, send it */ - if (s->opt) { - if (s->opt->offset < AST_FRIENDLY_OFFSET) - ast_log(LOG_WARNING, "Returning a frame of inappropriate offset (%d).", - s->opt->offset); - opt = s->opt; - s->opt = NULL; - return opt; - } - - /* Make sure we have enough data */ - if (s->len < s->size) { - /* Or, if this is a G.729 frame with VAD on it, send it immediately anyway */ - if (!((s->flags & AST_SMOOTHER_FLAG_G729) && (s->size % 10))) - return NULL; - } - len = s->size; - if (len > s->len) - len = s->len; - /* Make frame */ - s->f.frametype = AST_FRAME_VOICE; - s->f.subclass = s->format; - s->f.data = s->framedata + AST_FRIENDLY_OFFSET; - s->f.offset = AST_FRIENDLY_OFFSET; - s->f.datalen = len; - /* Samples will be improper given VAD, but with VAD the concept really doesn't even exist */ - s->f.samples = len * s->samplesperbyte; /* XXX rounding */ - s->f.delivery = s->delivery; - /* Fill Data */ - memcpy(s->f.data, s->data, len); - s->len -= len; - /* Move remaining data to the front if applicable */ - if (s->len) { - /* In principle this should all be fine because if we are sending - G.729 VAD, the next timestamp will take over anyawy */ - memmove(s->data, s->data + len, s->len); - if (!ast_tvzero(s->delivery)) { - /* If we have delivery time, increment it, otherwise, leave it at 0 */ - s->delivery = ast_tvadd(s->delivery, ast_samp2tv(s->f.samples, 8000)); - } - } - /* Return frame */ - return &s->f; -} - -void ast_smoother_free(struct ast_smoother *s) -{ - free(s); -} - -static struct ast_frame *ast_frame_header_new(void) -{ - struct ast_frame *f; - f = malloc(sizeof(struct ast_frame)); - if (f) - memset(f, 0, sizeof(struct ast_frame)); -#ifdef TRACE_FRAMES - if (f) { - headers++; - f->prev = NULL; - ast_mutex_lock(&framelock); - f->next = headerlist; - if (headerlist) - headerlist->prev = f; - headerlist = f; - ast_mutex_unlock(&framelock); - } -#endif - return f; -} - -/*! - * \todo Important: I should be made more efficient. Frame headers should - * most definitely be cached - */ -void ast_frfree(struct ast_frame *fr) -{ - if (fr->mallocd & AST_MALLOCD_DATA) { - if (fr->data) - free(fr->data - fr->offset); - } - if (fr->mallocd & AST_MALLOCD_SRC) { - if (fr->src) - free((char *)fr->src); - } - if (fr->mallocd & AST_MALLOCD_HDR) { -#ifdef TRACE_FRAMES - headers--; - ast_mutex_lock(&framelock); - if (fr->next) - fr->next->prev = fr->prev; - if (fr->prev) - fr->prev->next = fr->next; - else - headerlist = fr->next; - ast_mutex_unlock(&framelock); -#endif - free(fr); - } -} - -/*! - * \brief 'isolates' a frame by duplicating non-malloc'ed components - * (header, src, data). - * On return all components are malloc'ed - */ -struct ast_frame *ast_frisolate(struct ast_frame *fr) -{ - struct ast_frame *out; - if (!(fr->mallocd & AST_MALLOCD_HDR)) { - /* Allocate a new header if needed */ - out = ast_frame_header_new(); - if (!out) { - ast_log(LOG_WARNING, "Out of memory\n"); - return NULL; - } - out->frametype = fr->frametype; - out->subclass = fr->subclass; - out->datalen = fr->datalen; - out->samples = fr->samples; - out->offset = fr->offset; - out->src = NULL; - out->data = fr->data; - } else { - out = fr; - } - if (!(fr->mallocd & AST_MALLOCD_SRC)) { - if (fr->src) - out->src = strdup(fr->src); - } else - out->src = fr->src; - if (!(fr->mallocd & AST_MALLOCD_DATA)) { - out->data = malloc(fr->datalen + AST_FRIENDLY_OFFSET); - if (!out->data) { - free(out); - ast_log(LOG_WARNING, "Out of memory\n"); - return NULL; - } - out->data += AST_FRIENDLY_OFFSET; - out->offset = AST_FRIENDLY_OFFSET; - out->datalen = fr->datalen; - memcpy(out->data, fr->data, fr->datalen); - } - out->mallocd = AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA; - return out; -} - -struct ast_frame *ast_frdup(struct ast_frame *f) -{ - struct ast_frame *out; - int len, srclen = 0; - void *buf; - /* Start with standard stuff */ - len = sizeof(struct ast_frame) + AST_FRIENDLY_OFFSET + f->datalen; - /* If we have a source, add space for it */ - /* - * XXX Watch out here - if we receive a src which is not terminated - * properly, we can be easily attacked. Should limit the size we deal with. - */ - if (f->src) - srclen = strlen(f->src); - if (srclen > 0) - len += srclen + 1; - buf = malloc(len); - if (!buf) - return NULL; - out = buf; - /* Set us as having malloc'd header only, so it will eventually - get freed. */ - out->frametype = f->frametype; - out->subclass = f->subclass; - out->datalen = f->datalen; - out->samples = f->samples; - out->delivery = f->delivery; - out->mallocd = AST_MALLOCD_HDR; - out->offset = AST_FRIENDLY_OFFSET; - out->data = buf + sizeof(struct ast_frame) + AST_FRIENDLY_OFFSET; - if (srclen > 0) { - out->src = out->data + f->datalen; - /* Must have space since we allocated for it */ - strcpy((char *)out->src, f->src); - } else - out->src = NULL; - out->prev = NULL; - out->next = NULL; - memcpy(out->data, f->data, out->datalen); - return out; -} - -#if 0 -/* - * XXX - * This function is badly broken - it does not handle correctly - * partial reads on either header or body. - * However is it never used anywhere so we leave it commented out - */ -struct ast_frame *ast_fr_fdread(int fd) -{ - char buf[65536]; - int res; - int ttl = sizeof(struct ast_frame); - struct ast_frame *f = (struct ast_frame *)buf; - /* Read a frame directly from there. They're always in the - right format. */ - - while(ttl) { - res = read(fd, buf, ttl); - if (res < 0) { - ast_log(LOG_WARNING, "Bad read on %d: %s\n", fd, strerror(errno)); - return NULL; - } - ttl -= res; - } - - /* read the frame header */ - f->mallocd = 0; - /* Re-write data position */ - f->data = buf + sizeof(struct ast_frame); - f->offset = 0; - /* Forget about being mallocd */ - f->mallocd = 0; - /* Re-write the source */ - f->src = (char *)__FUNCTION__; - if (f->datalen > sizeof(buf) - sizeof(struct ast_frame)) { - /* Really bad read */ - ast_log(LOG_WARNING, "Strange read (%d bytes)\n", f->datalen); - return NULL; - } - if (f->datalen) { - if ((res = read(fd, f->data, f->datalen)) != f->datalen) { - /* Bad read */ - ast_log(LOG_WARNING, "How very strange, expected %d, got %d\n", f->datalen, res); - return NULL; - } - } - if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_HANGUP)) { - return NULL; - } - return ast_frisolate(f); -} - -/* Some convenient routines for sending frames to/from stream or datagram - sockets, pipes, etc (maybe even files) */ - -/* - * XXX this function is also partly broken because it does not handle - * partial writes. We comment it out too, and also the unique - * client it has, ast_fr_fdhangup() - */ -int ast_fr_fdwrite(int fd, struct ast_frame *frame) -{ - /* Write the frame exactly */ - if (write(fd, frame, sizeof(struct ast_frame)) != sizeof(struct ast_frame)) { - ast_log(LOG_WARNING, "Write error: %s\n", strerror(errno)); - return -1; - } - if (write(fd, frame->data, frame->datalen) != frame->datalen) { - ast_log(LOG_WARNING, "Write error: %s\n", strerror(errno)); - return -1; - } - return 0; -} - -int ast_fr_fdhangup(int fd) -{ - struct ast_frame hangup = { - AST_FRAME_CONTROL, - AST_CONTROL_HANGUP - }; - return ast_fr_fdwrite(fd, &hangup); -} - -#endif /* unused functions */ -void ast_swapcopy_samples(void *dst, const void *src, int samples) -{ - int i; - unsigned short *dst_s = dst; - const unsigned short *src_s = src; - - for (i=0; i<samples; i++) - dst_s[i] = (src_s[i]<<8) | (src_s[i]>>8); -} - - -struct ast_format_list *ast_get_format_list_index(int index) -{ - return &AST_FORMAT_LIST[index]; -} - -struct ast_format_list *ast_get_format_list(size_t *size) -{ - *size = (sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list)); - return AST_FORMAT_LIST; -} - -char* ast_getformatname(int format) -{ - int x = 0; - char *ret = "unknown"; - for (x = 0 ; x < sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list) ; x++) { - if(AST_FORMAT_LIST[x].visible && AST_FORMAT_LIST[x].bits == format) { - ret = AST_FORMAT_LIST[x].name; - break; - } - } - return ret; -} - -char *ast_getformatname_multiple(char *buf, size_t size, int format) { - - int x = 0; - unsigned len; - char *end = buf; - char *start = buf; - if (!size) return buf; - snprintf(end, size, "0x%x (", format); - len = strlen(end); - end += len; - size -= len; - start = end; - for (x = 0 ; x < sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list) ; x++) { - if (AST_FORMAT_LIST[x].visible && (AST_FORMAT_LIST[x].bits & format)) { - snprintf(end, size,"%s|",AST_FORMAT_LIST[x].name); - len = strlen(end); - end += len; - size -= len; - } - } - if (start == end) - snprintf(start, size, "nothing)"); - else if (size > 1) - *(end -1) = ')'; - return buf; -} - -static struct ast_codec_alias_table { - char *alias; - char *realname; - -} ast_codec_alias_table[] = { - {"slinear","slin"}, - {"g723.1","g723"}, -}; - -static char *ast_expand_codec_alias(char *in) { - int x = 0; - - for (x = 0; x < sizeof(ast_codec_alias_table) / sizeof(struct ast_codec_alias_table) ; x++) { - if(!strcmp(in,ast_codec_alias_table[x].alias)) - return ast_codec_alias_table[x].realname; - } - return in; -} - -int ast_getformatbyname(char *name) -{ - int x = 0, all = 0, format = 0; - - all = strcasecmp(name, "all") ? 0 : 1; - for (x = 0 ; x < sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list) ; x++) { - if(AST_FORMAT_LIST[x].visible && (all || - !strcasecmp(AST_FORMAT_LIST[x].name,name) || - !strcasecmp(AST_FORMAT_LIST[x].name,ast_expand_codec_alias(name)))) { - format |= AST_FORMAT_LIST[x].bits; - if(!all) - break; - } - } - - return format; -} - -char *ast_codec2str(int codec) { - int x = 0; - char *ret = "unknown"; - for (x = 0 ; x < sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list) ; x++) { - if(AST_FORMAT_LIST[x].visible && AST_FORMAT_LIST[x].bits == codec) { - ret = AST_FORMAT_LIST[x].desc; - break; - } - } - return ret; -} - -static int show_codecs(int fd, int argc, char *argv[]) -{ - int i, found=0; - char hex[25]; - - if ((argc < 2) || (argc > 3)) - return RESULT_SHOWUSAGE; - - if (!option_dontwarn) - ast_cli(fd, "Disclaimer: this command is for informational purposes only.\n" - "\tIt does not indicate anything about your configuration.\n"); - - ast_cli(fd, "%11s %9s %10s TYPE %5s %s\n","INT","BINARY","HEX","NAME","DESC"); - ast_cli(fd, "--------------------------------------------------------------------------------\n"); - if ((argc == 2) || (!strcasecmp(argv[1],"audio"))) { - found = 1; - for (i=0;i<11;i++) { - snprintf(hex,25,"(0x%x)",1<<i); - ast_cli(fd, "%11u (1 << %2d) %10s audio %5s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); - } - } - - if ((argc == 2) || (!strcasecmp(argv[1],"image"))) { - found = 1; - for (i=16;i<18;i++) { - snprintf(hex,25,"(0x%x)",1<<i); - ast_cli(fd, "%11u (1 << %2d) %10s image %5s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); - } - } - - if ((argc == 2) || (!strcasecmp(argv[1],"video"))) { - found = 1; - for (i=18;i<21;i++) { - snprintf(hex,25,"(0x%x)",1<<i); - ast_cli(fd, "%11u (1 << %2d) %10s video %5s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); - } - } - - if (! found) - return RESULT_SHOWUSAGE; - else - return RESULT_SUCCESS; -} - -static char frame_show_codecs_usage[] = -"Usage: show [audio|video|image] codecs\n" -" Displays codec mapping\n"; - -static int show_codec_n(int fd, int argc, char *argv[]) -{ - int codec, i, found=0; - - if (argc != 3) - return RESULT_SHOWUSAGE; - - if (sscanf(argv[2],"%d",&codec) != 1) - return RESULT_SHOWUSAGE; - - for (i=0;i<32;i++) - if (codec & (1 << i)) { - found = 1; - ast_cli(fd, "%11u (1 << %2d) %s\n",1 << i,i,ast_codec2str(1<<i)); - } - - if (! found) - ast_cli(fd, "Codec %d not found\n", codec); - - return RESULT_SUCCESS; -} - -static char frame_show_codec_n_usage[] = -"Usage: show codec <number>\n" -" Displays codec mapping\n"; - -/*! Dump a frame for debugging purposes */ -void ast_frame_dump(char *name, struct ast_frame *f, char *prefix) -{ - char *n = "unknown"; - char ftype[40] = "Unknown Frametype"; - char cft[80]; - char subclass[40] = "Unknown Subclass"; - char csub[80]; - char moreinfo[40] = ""; - char cn[60]; - char cp[40]; - char cmn[40]; - if (name) - n = name; - if (!f) { - ast_verbose("%s [ %s (NULL) ] [%s]\n", - term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)), - term_color(cft, "HANGUP", COLOR_BRRED, COLOR_BLACK, sizeof(cft)), - term_color(cn, n, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); - return; - } - /* XXX We should probably print one each of voice and video when the format changes XXX */ - if (f->frametype == AST_FRAME_VOICE) - return; - if (f->frametype == AST_FRAME_VIDEO) - return; - switch(f->frametype) { - case AST_FRAME_DTMF: - strcpy(ftype, "DTMF"); - subclass[0] = f->subclass; - subclass[1] = '\0'; - break; - case AST_FRAME_CONTROL: - strcpy(ftype, "Control"); - switch(f->subclass) { - case AST_CONTROL_HANGUP: - strcpy(subclass, "Hangup"); - break; - case AST_CONTROL_RING: - strcpy(subclass, "Ring"); - break; - case AST_CONTROL_RINGING: - strcpy(subclass, "Ringing"); - break; - case AST_CONTROL_ANSWER: - strcpy(subclass, "Answer"); - break; - case AST_CONTROL_BUSY: - strcpy(subclass, "Busy"); - break; - case AST_CONTROL_TAKEOFFHOOK: - strcpy(subclass, "Take Off Hook"); - break; - case AST_CONTROL_OFFHOOK: - strcpy(subclass, "Line Off Hook"); - break; - case AST_CONTROL_CONGESTION: - strcpy(subclass, "Congestion"); - break; - case AST_CONTROL_FLASH: - strcpy(subclass, "Flash"); - break; - case AST_CONTROL_WINK: - strcpy(subclass, "Wink"); - break; - case AST_CONTROL_OPTION: - strcpy(subclass, "Option"); - break; - case AST_CONTROL_RADIO_KEY: - strcpy(subclass, "Key Radio"); - break; - case AST_CONTROL_RADIO_UNKEY: - strcpy(subclass, "Unkey Radio"); - break; - case -1: - strcpy(subclass, "Stop generators"); - break; - default: - snprintf(subclass, sizeof(subclass), "Unknown control '%d'", f->subclass); - } - break; - case AST_FRAME_NULL: - strcpy(ftype, "Null Frame"); - strcpy(subclass, "N/A"); - break; - case AST_FRAME_IAX: - /* Should never happen */ - strcpy(ftype, "IAX Specific"); - snprintf(subclass, sizeof(subclass), "IAX Frametype %d", f->subclass); - break; - case AST_FRAME_TEXT: - strcpy(ftype, "Text"); - strcpy(subclass, "N/A"); - ast_copy_string(moreinfo, f->data, sizeof(moreinfo)); - break; - case AST_FRAME_IMAGE: - strcpy(ftype, "Image"); - snprintf(subclass, sizeof(subclass), "Image format %s\n", ast_getformatname(f->subclass)); - break; - case AST_FRAME_HTML: - strcpy(ftype, "HTML"); - switch(f->subclass) { - case AST_HTML_URL: - strcpy(subclass, "URL"); - ast_copy_string(moreinfo, f->data, sizeof(moreinfo)); - break; - case AST_HTML_DATA: - strcpy(subclass, "Data"); - break; - case AST_HTML_BEGIN: - strcpy(subclass, "Begin"); - break; - case AST_HTML_END: - strcpy(subclass, "End"); - break; - case AST_HTML_LDCOMPLETE: - strcpy(subclass, "Load Complete"); - break; - case AST_HTML_NOSUPPORT: - strcpy(subclass, "No Support"); - break; - case AST_HTML_LINKURL: - strcpy(subclass, "Link URL"); - ast_copy_string(moreinfo, f->data, sizeof(moreinfo)); - break; - case AST_HTML_UNLINK: - strcpy(subclass, "Unlink"); - break; - case AST_HTML_LINKREJECT: - strcpy(subclass, "Link Reject"); - break; - default: - snprintf(subclass, sizeof(subclass), "Unknown HTML frame '%d'\n", f->subclass); - break; - } - break; - default: - snprintf(ftype, sizeof(ftype), "Unknown Frametype '%d'", f->frametype); - } - if (!ast_strlen_zero(moreinfo)) - ast_verbose("%s [ TYPE: %s (%d) SUBCLASS: %s (%d) '%s' ] [%s]\n", - term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)), - term_color(cft, ftype, COLOR_BRRED, COLOR_BLACK, sizeof(cft)), - f->frametype, - term_color(csub, subclass, COLOR_BRCYAN, COLOR_BLACK, sizeof(csub)), - f->subclass, - term_color(cmn, moreinfo, COLOR_BRGREEN, COLOR_BLACK, sizeof(cmn)), - term_color(cn, n, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); - else - ast_verbose("%s [ TYPE: %s (%d) SUBCLASS: %s (%d) ] [%s]\n", - term_color(cp, prefix, COLOR_BRMAGENTA, COLOR_BLACK, sizeof(cp)), - term_color(cft, ftype, COLOR_BRRED, COLOR_BLACK, sizeof(cft)), - f->frametype, - term_color(csub, subclass, COLOR_BRCYAN, COLOR_BLACK, sizeof(csub)), - f->subclass, - term_color(cn, n, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); - -} - - -#ifdef TRACE_FRAMES -static int show_frame_stats(int fd, int argc, char *argv[]) -{ - struct ast_frame *f; - int x=1; - if (argc != 3) - return RESULT_SHOWUSAGE; - ast_cli(fd, " Framer Statistics \n"); - ast_cli(fd, "---------------------------\n"); - ast_cli(fd, "Total allocated headers: %d\n", headers); - ast_cli(fd, "Queue Dump:\n"); - ast_mutex_lock(&framelock); - for (f=headerlist; f; f = f->next) { - ast_cli(fd, "%d. Type %d, subclass %d from %s\n", x++, f->frametype, f->subclass, f->src ? f->src : "<Unknown>"); - } - ast_mutex_unlock(&framelock); - return RESULT_SUCCESS; -} - -static char frame_stats_usage[] = -"Usage: show frame stats\n" -" Displays debugging statistics from framer\n"; -#endif - -/* Builtin Asterisk CLI-commands for debugging */ -static struct ast_cli_entry my_clis[] = { -{ { "show", "codecs", NULL }, show_codecs, "Shows codecs", frame_show_codecs_usage }, -{ { "show", "audio", "codecs", NULL }, show_codecs, "Shows audio codecs", frame_show_codecs_usage }, -{ { "show", "video", "codecs", NULL }, show_codecs, "Shows video codecs", frame_show_codecs_usage }, -{ { "show", "image", "codecs", NULL }, show_codecs, "Shows image codecs", frame_show_codecs_usage }, -{ { "show", "codec", NULL }, show_codec_n, "Shows a specific codec", frame_show_codec_n_usage }, -#ifdef TRACE_FRAMES -{ { "show", "frame", "stats", NULL }, show_frame_stats, "Shows frame statistics", frame_stats_usage }, -#endif -}; - -int init_framer(void) -{ - ast_cli_register_multiple(my_clis, sizeof(my_clis)/sizeof(my_clis[0]) ); - return 0; -} - -void ast_codec_pref_convert(struct ast_codec_pref *pref, char *buf, size_t size, int right) -{ - int x = 0, differential = (int) 'A', mem = 0; - char *from = NULL, *to = NULL; - - if(right) { - from = pref->order; - to = buf; - mem = size; - } else { - to = pref->order; - from = buf; - mem = 32; - } - - memset(to, 0, mem); - for (x = 0; x < 32 ; x++) { - if(!from[x]) - break; - to[x] = right ? (from[x] + differential) : (from[x] - differential); - } -} - -int ast_codec_pref_string(struct ast_codec_pref *pref, char *buf, size_t size) -{ - int x = 0, codec = 0; - size_t total_len = 0, slen = 0; - char *formatname = 0; - - memset(buf,0,size); - total_len = size; - buf[0] = '('; - total_len--; - for(x = 0; x < 32 ; x++) { - if(total_len <= 0) - break; - if(!(codec = ast_codec_pref_index(pref,x))) - break; - if((formatname = ast_getformatname(codec))) { - slen = strlen(formatname); - if(slen > total_len) - break; - strncat(buf,formatname,total_len); - total_len -= slen; - } - if(total_len && x < 31 && ast_codec_pref_index(pref , x + 1)) { - strncat(buf,"|",total_len); - total_len--; - } - } - if(total_len) { - strncat(buf,")",total_len); - total_len--; - } - - return size - total_len; -} - -int ast_codec_pref_index(struct ast_codec_pref *pref, int index) -{ - int slot = 0; - - - if((index >= 0) && (index < sizeof(pref->order))) { - slot = pref->order[index]; - } - - return slot ? AST_FORMAT_LIST[slot-1].bits : 0; -} - -/*! \brief ast_codec_pref_remove: Remove codec from pref list ---*/ -void ast_codec_pref_remove(struct ast_codec_pref *pref, int format) -{ - struct ast_codec_pref oldorder; - int x=0, y=0; - size_t size = 0; - int slot = 0; - - if(!pref->order[0]) - return; - - size = sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list); - - memcpy(&oldorder,pref,sizeof(struct ast_codec_pref)); - memset(pref,0,sizeof(struct ast_codec_pref)); - - for (x = 0; x < size; x++) { - slot = oldorder.order[x]; - if(! slot) - break; - if(AST_FORMAT_LIST[slot-1].bits != format) - pref->order[y++] = slot; - } - -} - -/*! \brief ast_codec_pref_append: Append codec to list ---*/ -int ast_codec_pref_append(struct ast_codec_pref *pref, int format) -{ - size_t size = 0; - int x = 0, newindex = -1; - - ast_codec_pref_remove(pref, format); - size = sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list); - - for (x = 0; x < size; x++) { - if(AST_FORMAT_LIST[x].bits == format) { - newindex = x + 1; - break; - } - } - - if(newindex) { - for (x = 0; x < size; x++) { - if(!pref->order[x]) { - pref->order[x] = newindex; - break; - } - } - } - - return x; -} - - -/*! \brief ast_codec_choose: Pick a codec ---*/ -int ast_codec_choose(struct ast_codec_pref *pref, int formats, int find_best) -{ - size_t size = 0; - int x = 0, ret = 0, slot = 0; - - size = sizeof(AST_FORMAT_LIST) / sizeof(struct ast_format_list); - for (x = 0; x < size; x++) { - slot = pref->order[x]; - - if(!slot) - break; - if ( formats & AST_FORMAT_LIST[slot-1].bits ) { - ret = AST_FORMAT_LIST[slot-1].bits; - break; - } - } - if(ret) - return ret; - - return find_best ? ast_best_codec(formats) : 0; -} - -void ast_parse_allow_disallow(struct ast_codec_pref *pref, int *mask, const char *list, int allowing) -{ - char *parse; - char *this; - int format; - - parse = ast_strdupa(list); - while ((this = strsep(&parse, ","))) { - if (!(format = ast_getformatbyname(this))) { - ast_log(LOG_WARNING, "Cannot %s unknown format '%s'\n", allowing ? "allow" : "disallow", this); - continue; - } - - if (mask) { - if (allowing) - *mask |= format; - else - *mask &= ~format; - } - - if (pref) { - if (strcasecmp(this, "all")) { - if (allowing) - ast_codec_pref_append(pref, format); - else - ast_codec_pref_remove(pref, format); - } else if (!allowing) { - memset(pref, 0, sizeof(*pref)); - } - } - } -} - -static int g723_len(unsigned char buf) -{ - switch(buf & TYPE_MASK) { - case TYPE_DONTSEND: - return 0; - break; - case TYPE_SILENCE: - return 4; - break; - case TYPE_HIGH: - return 24; - break; - case TYPE_LOW: - return 20; - break; - default: - ast_log(LOG_WARNING, "Badly encoded frame (%d)\n", buf & TYPE_MASK); - } - return -1; -} - -static int g723_samples(unsigned char *buf, int maxlen) -{ - int pos = 0; - int samples = 0; - int res; - while(pos < maxlen) { - res = g723_len(buf[pos]); - if (res <= 0) - break; - samples += 240; - pos += res; - } - return samples; -} - -static unsigned char get_n_bits_at(unsigned char *data, int n, int bit) -{ - int byte = bit / 8; /* byte containing first bit */ - int rem = 8 - (bit % 8); /* remaining bits in first byte */ - unsigned char ret = 0; - - if (n <= 0 || n > 8) - return 0; - - if (rem < n) { - ret = (data[byte] << (n - rem)); - ret |= (data[byte + 1] >> (8 - n + rem)); - } else { - ret = (data[byte] >> (rem - n)); - } - - return (ret & (0xff >> (8 - n))); -} - -static int speex_get_wb_sz_at(unsigned char *data, int len, int bit) -{ - static int SpeexWBSubModeSz[] = { - 0, 36, 112, 192, - 352, 0, 0, 0 }; - int off = bit; - unsigned char c; - - /* skip up to two wideband frames */ - if (((len * 8 - off) >= 5) && - get_n_bits_at(data, 1, off)) { - c = get_n_bits_at(data, 3, off + 1); - off += SpeexWBSubModeSz[c]; - - if (((len * 8 - off) >= 5) && - get_n_bits_at(data, 1, off)) { - c = get_n_bits_at(data, 3, off + 1); - off += SpeexWBSubModeSz[c]; - - if (((len * 8 - off) >= 5) && - get_n_bits_at(data, 1, off)) { - ast_log(LOG_WARNING, "Encountered corrupt speex frame; too many wideband frames in a row.\n"); - return -1; - } - } - - } - return off - bit; -} - -static int speex_samples(unsigned char *data, int len) -{ - static int SpeexSubModeSz[] = { - 5, 43, 119, 160, - 220, 300, 364, 492, - 79, 0, 0, 0, - 0, 0, 0, 0 }; - static int SpeexInBandSz[] = { - 1, 1, 4, 4, - 4, 4, 4, 4, - 8, 8, 16, 16, - 32, 32, 64, 64 }; - int bit = 0; - int cnt = 0; - int off = 0; - unsigned char c; - - while ((len * 8 - bit) >= 5) { - /* skip wideband frames */ - off = speex_get_wb_sz_at(data, len, bit); - if (off < 0) { - ast_log(LOG_WARNING, "Had error while reading wideband frames for speex samples\n"); - break; - } - bit += off; - - if ((len * 8 - bit) < 5) { - ast_log(LOG_WARNING, "Not enough bits remaining after wide band for speex samples.\n"); - break; - } - - /* get control bits */ - c = get_n_bits_at(data, 5, bit); - bit += 5; - - if (c == 15) { - /* terminator */ - break; - } else if (c == 14) { - /* in-band signal; next 4 bits contain signal id */ - c = get_n_bits_at(data, 4, bit); - bit += 4; - bit += SpeexInBandSz[c]; - } else if (c == 13) { - /* user in-band; next 5 bits contain msg len */ - c = get_n_bits_at(data, 5, bit); - bit += 5; - bit += c * 8; - } else if (c > 8) { - /* unknown */ - break; - } else { - /* skip number bits for submode (less the 5 control bits) */ - bit += SpeexSubModeSz[c] - 5; - cnt += 160; /* new frame */ - } - } - return cnt; -} - -int ast_codec_get_samples(struct ast_frame *f) -{ - int samples=0; - switch(f->subclass) { - case AST_FORMAT_SPEEX: - samples = speex_samples(f->data, f->datalen); - break; - case AST_FORMAT_G723_1: - samples = g723_samples(f->data, f->datalen); - break; - case AST_FORMAT_ILBC: - samples = 240 * (f->datalen / 50); - break; - case AST_FORMAT_GSM: - samples = 160 * (f->datalen / 33); - break; - case AST_FORMAT_G729A: - samples = f->datalen * 8; - break; - case AST_FORMAT_SLINEAR: - samples = f->datalen / 2; - break; - case AST_FORMAT_LPC10: - /* assumes that the RTP packet contains one LPC10 frame */ - samples = 22 * 8; - samples += (((char *)(f->data))[7] & 0x1) * 8; - break; - case AST_FORMAT_ULAW: - case AST_FORMAT_ALAW: - samples = f->datalen; - break; - case AST_FORMAT_ADPCM: - case AST_FORMAT_G726: - samples = f->datalen * 2; - break; - default: - ast_log(LOG_WARNING, "Unable to calculate samples for format %s\n", ast_getformatname(f->subclass)); - } - return samples; -} - -int ast_codec_get_len(int format, int samples) -{ - int len = 0; - - /* XXX Still need speex, g723, and lpc10 XXX */ - switch(format) { - case AST_FORMAT_ILBC: - len = (samples / 240) * 50; - break; - case AST_FORMAT_GSM: - len = (samples / 160) * 33; - break; - case AST_FORMAT_G729A: - len = samples / 8; - break; - case AST_FORMAT_SLINEAR: - len = samples * 2; - break; - case AST_FORMAT_ULAW: - case AST_FORMAT_ALAW: - len = samples; - break; - case AST_FORMAT_ADPCM: - case AST_FORMAT_G726: - len = samples / 2; - break; - default: - ast_log(LOG_WARNING, "Unable to calculate sample length for format %s\n", ast_getformatname(format)); - } - - return len; -} - -int ast_frame_adjust_volume(struct ast_frame *f, int adjustment) -{ - int count; - short *fdata = f->data; - short adjust_value = abs(adjustment); - - if ((f->frametype != AST_FRAME_VOICE) || (f->subclass != AST_FORMAT_SLINEAR)) - return -1; - - if (!adjustment) - return 0; - - for (count = 0; count < f->samples; count++) { - if (adjustment > 0) { - ast_slinear_saturated_multiply(&fdata[count], &adjust_value); - } else if (adjustment < 0) { - ast_slinear_saturated_divide(&fdata[count], &adjust_value); - } - } - - return 0; -} - -int ast_frame_slinear_sum(struct ast_frame *f1, struct ast_frame *f2) -{ - int count; - short *data1, *data2; - - if ((f1->frametype != AST_FRAME_VOICE) || (f1->subclass != AST_FORMAT_SLINEAR)) - return -1; - - if ((f2->frametype != AST_FRAME_VOICE) || (f2->subclass != AST_FORMAT_SLINEAR)) - return -1; - - if (f1->samples != f2->samples) - return -1; - - for (count = 0, data1 = f1->data, data2 = f2->data; - count < f1->samples; - count++, data1++, data2++) - ast_slinear_saturated_add(data1, data2); - - return 0; -} |