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Diffstat (limited to 'trunk/main/frame.c')
| -rw-r--r-- | trunk/main/frame.c | 1513 |
1 files changed, 0 insertions, 1513 deletions
diff --git a/trunk/main/frame.c b/trunk/main/frame.c deleted file mode 100644 index 3100636c5..000000000 --- a/trunk/main/frame.c +++ /dev/null @@ -1,1513 +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 and codec manipulation routines - * - * \author Mark Spencer <markster@digium.com> - */ - -#include "asterisk.h" - -ASTERISK_FILE_VERSION(__FILE__, "$Revision$") - -#include "asterisk/_private.h" -#include "asterisk/lock.h" -#include "asterisk/frame.h" -#include "asterisk/channel.h" -#include "asterisk/cli.h" -#include "asterisk/term.h" -#include "asterisk/utils.h" -#include "asterisk/threadstorage.h" -#include "asterisk/linkedlists.h" -#include "asterisk/translate.h" - -#ifdef TRACE_FRAMES -static int headers; -static AST_LIST_HEAD_STATIC(headerlist, ast_frame); -#endif - -#if !defined(LOW_MEMORY) -static void frame_cache_cleanup(void *data); - -/*! \brief A per-thread cache of frame headers */ -AST_THREADSTORAGE_CUSTOM(frame_cache, NULL, frame_cache_cleanup); - -/*! - * \brief Maximum ast_frame cache size - * - * In most cases where the frame header cache will be useful, the size - * of the cache will stay very small. However, it is not always the case that - * the same thread that allocates the frame will be the one freeing them, so - * sometimes a thread will never have any frames in its cache, or the cache - * will never be pulled from. For the latter case, we limit the maximum size. - */ -#define FRAME_CACHE_MAX_SIZE 10 - -/*! \brief This is just so ast_frames, a list head struct for holding a list of - * ast_frame structures, is defined. */ -AST_LIST_HEAD_NOLOCK(ast_frames, ast_frame); - -struct ast_frame_cache { - struct ast_frames list; - size_t size; -}; -#endif - -#define SMOOTHER_SIZE 8000 - -enum frame_type { - TYPE_HIGH, /* 0x0 */ - TYPE_LOW, /* 0x1 */ - TYPE_SILENCE, /* 0x2 */ - TYPE_DONTSEND /* 0x3 */ -}; - -#define TYPE_MASK 0x3 - -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[] = { - { AST_FORMAT_G723_1 , "g723", 8000, "G.723.1", 20, 30, 300, 30, 30 }, /*!< G723.1 */ - { AST_FORMAT_GSM, "gsm", 8000, "GSM", 33, 20, 300, 20, 20 }, /*!< codec_gsm.c */ - { AST_FORMAT_ULAW, "ulaw", 8000, "G.711 u-law", 80, 10, 150, 10, 20 }, /*!< codec_ulaw.c */ - { AST_FORMAT_ALAW, "alaw", 8000, "G.711 A-law", 80, 10, 150, 10, 20 }, /*!< codec_alaw.c */ - { AST_FORMAT_G726, "g726", 8000, "G.726 RFC3551", 40, 10, 300, 10, 20 }, /*!< codec_g726.c */ - { AST_FORMAT_ADPCM, "adpcm" , 8000, "ADPCM", 40, 10, 300, 10, 20 }, /*!< codec_adpcm.c */ - { AST_FORMAT_SLINEAR, "slin", 8000, "16 bit Signed Linear PCM", 160, 10, 70, 10, 20, AST_SMOOTHER_FLAG_BE }, /*!< Signed linear */ - { AST_FORMAT_LPC10, "lpc10", 8000, "LPC10", 7, 20, 20, 20, 20 }, /*!< codec_lpc10.c */ - { AST_FORMAT_G729A, "g729", 8000, "G.729A", 10, 10, 230, 10, 20, AST_SMOOTHER_FLAG_G729 }, /*!< Binary commercial distribution */ - { AST_FORMAT_SPEEX, "speex", 8000, "SpeeX", 10, 10, 60, 10, 20 }, /*!< codec_speex.c */ - { AST_FORMAT_ILBC, "ilbc", 8000, "iLBC", 50, 30, 30, 30, 30 }, /*!< codec_ilbc.c */ /* inc=30ms - workaround */ - { AST_FORMAT_G726_AAL2, "g726aal2", 8000, "G.726 AAL2", 40, 10, 300, 10, 20 }, /*!< codec_g726.c */ - { AST_FORMAT_G722, "g722", 16000, "G722", 80, 10, 150, 10, 20 }, /*!< codec_g722.c */ - { AST_FORMAT_SLINEAR16, "slin16", 16000, "16 bit Signed Linear PCM (16kHz)", 320, 10, 70, 10, 20 }, /*!< Signed linear (16kHz) */ - { AST_FORMAT_JPEG, "jpeg", 0, "JPEG image"}, /*!< See format_jpeg.c */ - { AST_FORMAT_PNG, "png", 0, "PNG image"}, /*!< PNG Image format */ - { AST_FORMAT_H261, "h261", 0, "H.261 Video" }, /*!< H.261 Video Passthrough */ - { AST_FORMAT_H263, "h263", 0, "H.263 Video" }, /*!< H.263 Passthrough support, see format_h263.c */ - { AST_FORMAT_H263_PLUS, "h263p", 0, "H.263+ Video" }, /*!< H.263plus passthrough support See format_h263.c */ - { AST_FORMAT_H264, "h264", 0, "H.264 Video" }, /*!< Passthrough support, see format_h263.c */ - { AST_FORMAT_MP4_VIDEO, "mpeg4", 0, "MPEG4 Video" }, /*!< Passthrough support for MPEG4 */ - { AST_FORMAT_T140, "t140", 0, "Passthrough T.140 Realtime Text" }, /*!< Passthrough support for T.140 Realtime Text */ -}; - -struct ast_frame ast_null_frame = { AST_FRAME_NULL, }; - -void ast_smoother_reset(struct ast_smoother *s, int size) -{ - memset(s, 0, sizeof(*s)); - s->size = size; -} - -struct ast_smoother *ast_smoother_new(int size) -{ - struct ast_smoother *s; - if (size < 1) - return NULL; - if ((s = ast_malloc(sizeof(*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_test_flag(struct ast_smoother *s, int flag) -{ - return (s->flags & flag); -} - -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 */ - if (swap) - ast_swapcopy_samples(f->data, f->data, f->samples); - 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 */ - if (swap) - ast_swapcopy_samples(f->data, f->data, f->samples); - 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).\n", - 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) -{ - ast_free(s); -} - -static struct ast_frame *ast_frame_header_new(void) -{ - struct ast_frame *f; - -#if !defined(LOW_MEMORY) - struct ast_frame_cache *frames; - - if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) { - if ((f = AST_LIST_REMOVE_HEAD(&frames->list, frame_list))) { - size_t mallocd_len = f->mallocd_hdr_len; - memset(f, 0, sizeof(*f)); - f->mallocd_hdr_len = mallocd_len; - f->mallocd = AST_MALLOCD_HDR; - frames->size--; - return f; - } - } - if (!(f = ast_calloc_cache(1, sizeof(*f)))) - return NULL; -#else - if (!(f = ast_calloc(1, sizeof(*f)))) - return NULL; -#endif - - f->mallocd_hdr_len = sizeof(*f); -#ifdef TRACE_FRAMES - AST_LIST_LOCK(&headerlist); - headers++; - AST_LIST_INSERT_HEAD(&headerlist, f, frame_list); - AST_LIST_UNLOCK(&headerlist); -#endif - - return f; -} - -#if !defined(LOW_MEMORY) -static void frame_cache_cleanup(void *data) -{ - struct ast_frame_cache *frames = data; - struct ast_frame *f; - - while ((f = AST_LIST_REMOVE_HEAD(&frames->list, frame_list))) - ast_free(f); - - ast_free(frames); -} -#endif - -void ast_frame_free(struct ast_frame *fr, int cache) -{ - if (ast_test_flag(fr, AST_FRFLAG_FROM_TRANSLATOR)) - ast_translate_frame_freed(fr); - - if (!fr->mallocd) - return; - -#if !defined(LOW_MEMORY) - if (cache && fr->mallocd == AST_MALLOCD_HDR) { - /* Cool, only the header is malloc'd, let's just cache those for now - * to keep things simple... */ - struct ast_frame_cache *frames; - - if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames))) - && frames->size < FRAME_CACHE_MAX_SIZE) { - AST_LIST_INSERT_HEAD(&frames->list, fr, frame_list); - frames->size++; - return; - } - } -#endif - - if (fr->mallocd & AST_MALLOCD_DATA) { - if (fr->data) - ast_free(fr->data - fr->offset); - } - if (fr->mallocd & AST_MALLOCD_SRC) { - if (fr->src) - ast_free((char *)fr->src); - } - if (fr->mallocd & AST_MALLOCD_HDR) { -#ifdef TRACE_FRAMES - AST_LIST_LOCK(&headerlist); - headers--; - AST_LIST_REMOVE(&headerlist, fr, frame_list); - AST_LIST_UNLOCK(&headerlist); -#endif - ast_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; - void *newdata; - - ast_clear_flag(fr, AST_FRFLAG_FROM_TRANSLATOR); - - if (!(fr->mallocd & AST_MALLOCD_HDR)) { - /* Allocate a new header if needed */ - if (!(out = ast_frame_header_new())) - return NULL; - out->frametype = fr->frametype; - out->subclass = fr->subclass; - out->datalen = fr->datalen; - out->samples = fr->samples; - out->offset = fr->offset; - out->data = fr->data; - /* Copy the timing data */ - ast_copy_flags(out, fr, AST_FRFLAG_HAS_TIMING_INFO); - if (ast_test_flag(fr, AST_FRFLAG_HAS_TIMING_INFO)) { - out->ts = fr->ts; - out->len = fr->len; - out->seqno = fr->seqno; - } - } else - out = fr; - - if (!(fr->mallocd & AST_MALLOCD_SRC)) { - if (fr->src) { - if (!(out->src = ast_strdup(fr->src))) { - if (out != fr) - ast_free(out); - return NULL; - } - } - } else - out->src = fr->src; - - if (!(fr->mallocd & AST_MALLOCD_DATA)) { - if (!(newdata = ast_malloc(fr->datalen + AST_FRIENDLY_OFFSET))) { - if (out->src != fr->src) - ast_free((void *) out->src); - if (out != fr) - ast_free(out); - return NULL; - } - newdata += AST_FRIENDLY_OFFSET; - out->offset = AST_FRIENDLY_OFFSET; - out->datalen = fr->datalen; - memcpy(newdata, fr->data, fr->datalen); - out->data = newdata; - } - - out->mallocd = AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA; - - return out; -} - -struct ast_frame *ast_frdup(const struct ast_frame *f) -{ - struct ast_frame *out = NULL; - int len, srclen = 0; - void *buf = NULL; - -#if !defined(LOW_MEMORY) - struct ast_frame_cache *frames; -#endif - - /* Start with standard stuff */ - len = sizeof(*out) + 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; - -#if !defined(LOW_MEMORY) - if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) { - AST_LIST_TRAVERSE_SAFE_BEGIN(&frames->list, out, frame_list) { - if (out->mallocd_hdr_len >= len) { - size_t mallocd_len = out->mallocd_hdr_len; - - AST_LIST_REMOVE_CURRENT(frame_list); - memset(out, 0, sizeof(*out)); - out->mallocd_hdr_len = mallocd_len; - buf = out; - frames->size--; - break; - } - } - AST_LIST_TRAVERSE_SAFE_END; - } -#endif - - if (!buf) { - if (!(buf = ast_calloc_cache(1, len))) - return NULL; - out = buf; - out->mallocd_hdr_len = len; - } - - out->frametype = f->frametype; - out->subclass = f->subclass; - out->datalen = f->datalen; - out->samples = f->samples; - out->delivery = f->delivery; - /* Set us as having malloc'd header only, so it will eventually - get freed. */ - out->mallocd = AST_MALLOCD_HDR; - out->offset = AST_FRIENDLY_OFFSET; - if (out->datalen) { - out->data = buf + sizeof(*out) + AST_FRIENDLY_OFFSET; - memcpy(out->data, f->data, out->datalen); - } - if (srclen > 0) { - out->src = buf + sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen; - /* Must have space since we allocated for it */ - strcpy((char *)out->src, f->src); - } - ast_copy_flags(out, f, AST_FRFLAG_HAS_TIMING_INFO); - out->ts = f->ts; - out->len = f->len; - out->seqno = f->seqno; - return out; -} - -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(AST_FORMAT_LIST[0])); - return AST_FORMAT_LIST; -} - -char* ast_getformatname(int format) -{ - int x; - char *ret = "unknown"; - for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { - if (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; - unsigned len; - char *start, *end = 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(AST_FORMAT_LIST[0]); x++) { - if (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) - ast_copy_string(start, "nothing)", size); - else if (size > 1) - *(end -1) = ')'; - return buf; -} - -static struct ast_codec_alias_table { - char *alias; - char *realname; -} ast_codec_alias_table[] = { - { "slinear", "slin"}, - { "slinear16", "slin16"}, - { "g723.1", "g723"}, -}; - -static const char *ast_expand_codec_alias(const char *in) -{ - int x; - - for (x = 0; x < sizeof(ast_codec_alias_table) / sizeof(ast_codec_alias_table[0]); x++) { - if (!strcmp(in,ast_codec_alias_table[x].alias)) - return ast_codec_alias_table[x].realname; - } - return in; -} - -int ast_getformatbyname(const char *name) -{ - int x, all, format = 0; - - all = strcasecmp(name, "all") ? 0 : 1; - for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { - if (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; - char *ret = "unknown"; - for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { - if (AST_FORMAT_LIST[x].bits == codec) { - ret = AST_FORMAT_LIST[x].desc; - break; - } - } - return ret; -} - -static char *show_codecs(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a) -{ - int i, found=0; - char hex[25]; - - switch (cmd) { - case CLI_INIT: - e->command = "core show codecs [audio|video|image]"; - e->usage = - "Usage: core show codecs [audio|video|image]\n" - " Displays codec mapping\n"; - return NULL; - case CLI_GENERATE: - return NULL; - } - - if ((a->argc < 3) || (a->argc > 4)) - return CLI_SHOWUSAGE; - - if (!ast_opt_dont_warn) - ast_cli(a->fd, "Disclaimer: this command is for informational purposes only.\n" - "\tIt does not indicate anything about your configuration.\n"); - - ast_cli(a->fd, "%11s %9s %10s TYPE %8s %s\n","INT","BINARY","HEX","NAME","DESC"); - ast_cli(a->fd, "--------------------------------------------------------------------------------\n"); - if ((a->argc == 3) || (!strcasecmp(a->argv[3],"audio"))) { - found = 1; - for (i=0;i<13;i++) { - snprintf(hex,25,"(0x%x)",1<<i); - ast_cli(a->fd, "%11u (1 << %2d) %10s audio %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); - } - } - - if ((a->argc == 3) || (!strcasecmp(a->argv[3],"image"))) { - found = 1; - for (i=16;i<18;i++) { - snprintf(hex,25,"(0x%x)",1<<i); - ast_cli(a->fd, "%11u (1 << %2d) %10s image %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); - } - } - - if ((a->argc == 3) || (!strcasecmp(a->argv[3],"video"))) { - found = 1; - for (i=18;i<22;i++) { - snprintf(hex,25,"(0x%x)",1<<i); - ast_cli(a->fd, "%11u (1 << %2d) %10s video %8s (%s)\n",1 << i,i,hex,ast_getformatname(1<<i),ast_codec2str(1<<i)); - } - } - - if (!found) - return CLI_SHOWUSAGE; - else - return CLI_SUCCESS; -} - -static char *show_codec_n(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a) -{ - int codec, i, found=0; - - switch (cmd) { - case CLI_INIT: - e->command = "core show codec"; - e->usage = - "Usage: core show codec <number>\n" - " Displays codec mapping\n"; - return NULL; - case CLI_GENERATE: - return NULL; - } - - if (a->argc != 4) - return CLI_SHOWUSAGE; - - if (sscanf(a->argv[3],"%d",&codec) != 1) - return CLI_SHOWUSAGE; - - for (i = 0; i < 32; i++) - if (codec & (1 << i)) { - found = 1; - ast_cli(a->fd, "%11u (1 << %2d) %s\n",1 << i,i,ast_codec2str(1<<i)); - } - - if (!found) - ast_cli(a->fd, "Codec %d not found\n", codec); - - return CLI_SUCCESS; -} - -/*! Dump a frame for debugging purposes */ -void ast_frame_dump(const char *name, struct ast_frame *f, char *prefix) -{ - const char noname[] = "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) - name = noname; - - - 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, name, 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_BEGIN: - strcpy(ftype, "DTMF Begin"); - subclass[0] = f->subclass; - subclass[1] = '\0'; - break; - case AST_FRAME_DTMF_END: - strcpy(ftype, "DTMF End"); - 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; - case AST_FRAME_MODEM: - strcpy(ftype, "Modem"); - switch (f->subclass) { - case AST_MODEM_T38: - strcpy(subclass, "T.38"); - break; - case AST_MODEM_V150: - strcpy(subclass, "V.150"); - break; - default: - snprintf(subclass, sizeof(subclass), "Unknown MODEM 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, name, 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, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn))); -} - - -#ifdef TRACE_FRAMES -static char *show_frame_stats(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a) -{ - struct ast_frame *f; - int x=1; - - switch (cmd) { - case CLI_INIT: - e->command = "core show frame stats"; - e->usage = - "Usage: core show frame stats\n" - " Displays debugging statistics from framer\n"; - return NULL; - case CLI_GENERATE: - return NULL; - } - - if (a->argc != 4) - return CLI_SHOWUSAGE; - AST_LIST_LOCK(&headerlist); - ast_cli(a->fd, " Framer Statistics \n"); - ast_cli(a->fd, "---------------------------\n"); - ast_cli(a->fd, "Total allocated headers: %d\n", headers); - ast_cli(a->fd, "Queue Dump:\n"); - AST_LIST_TRAVERSE(&headerlist, f, frame_list) - ast_cli(a->fd, "%d. Type %d, subclass %d from %s\n", x++, f->frametype, f->subclass, f->src ? f->src : "<Unknown>"); - AST_LIST_UNLOCK(&headerlist); - return CLI_SUCCESS; -} -#endif - -/* Builtin Asterisk CLI-commands for debugging */ -static struct ast_cli_entry my_clis[] = { - AST_CLI_DEFINE(show_codecs, "Displays a list of codecs"), - AST_CLI_DEFINE(show_codec_n, "Shows a specific codec"), -#ifdef TRACE_FRAMES - AST_CLI_DEFINE(show_frame_stats, "Shows frame statistics"), -#endif -}; - -int init_framer(void) -{ - ast_cli_register_multiple(my_clis, sizeof(my_clis) / sizeof(struct ast_cli_entry)); - return 0; -} - -void ast_codec_pref_convert(struct ast_codec_pref *pref, char *buf, size_t size, int right) -{ - int x, differential = (int) 'A', mem; - char *from, *to; - - 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, codec; - size_t total_len, slen; - char *formatname; - - 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 Remove codec from pref list */ -void ast_codec_pref_remove(struct ast_codec_pref *pref, int format) -{ - struct ast_codec_pref oldorder; - int x, y = 0; - int slot; - int size; - - if (!pref->order[0]) - return; - - memcpy(&oldorder, pref, sizeof(oldorder)); - memset(pref, 0, sizeof(*pref)); - - for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { - slot = oldorder.order[x]; - size = oldorder.framing[x]; - if (! slot) - break; - if (AST_FORMAT_LIST[slot-1].bits != format) { - pref->order[y] = slot; - pref->framing[y++] = size; - } - } - -} - -/*! \brief Append codec to list */ -int ast_codec_pref_append(struct ast_codec_pref *pref, int format) -{ - int x, newindex = 0; - - ast_codec_pref_remove(pref, format); - - for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { - if (AST_FORMAT_LIST[x].bits == format) { - newindex = x + 1; - break; - } - } - - if (newindex) { - for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { - if (!pref->order[x]) { - pref->order[x] = newindex; - break; - } - } - } - - return x; -} - -/*! \brief Prepend codec to list */ -void ast_codec_pref_prepend(struct ast_codec_pref *pref, int format, int only_if_existing) -{ - int x, newindex = 0; - - /* First step is to get the codecs "index number" */ - for (x = 0; x < ARRAY_LEN(AST_FORMAT_LIST); x++) { - if (AST_FORMAT_LIST[x].bits == format) { - newindex = x + 1; - break; - } - } - /* Done if its unknown */ - if (!newindex) - return; - - /* Now find any existing occurrence, or the end */ - for (x = 0; x < 32; x++) { - if (!pref->order[x] || pref->order[x] == newindex) - break; - } - - if (only_if_existing && !pref->order[x]) - return; - - /* Move down to make space to insert - either all the way to the end, - or as far as the existing location (which will be overwritten) */ - for (; x > 0; x--) { - pref->order[x] = pref->order[x - 1]; - pref->framing[x] = pref->framing[x - 1]; - } - - /* And insert the new entry */ - pref->order[0] = newindex; - pref->framing[0] = 0; /* ? */ -} - -/*! \brief Set packet size for codec */ -int ast_codec_pref_setsize(struct ast_codec_pref *pref, int format, int framems) -{ - int x, index = -1; - - for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { - if (AST_FORMAT_LIST[x].bits == format) { - index = x; - break; - } - } - - if (index < 0) - return -1; - - /* size validation */ - if (!framems) - framems = AST_FORMAT_LIST[index].def_ms; - - if (AST_FORMAT_LIST[index].inc_ms && framems % AST_FORMAT_LIST[index].inc_ms) /* avoid division by zero */ - framems -= framems % AST_FORMAT_LIST[index].inc_ms; - - if (framems < AST_FORMAT_LIST[index].min_ms) - framems = AST_FORMAT_LIST[index].min_ms; - - if (framems > AST_FORMAT_LIST[index].max_ms) - framems = AST_FORMAT_LIST[index].max_ms; - - - for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { - if (pref->order[x] == (index + 1)) { - pref->framing[x] = framems; - break; - } - } - - return x; -} - -/*! \brief Get packet size for codec */ -struct ast_format_list ast_codec_pref_getsize(struct ast_codec_pref *pref, int format) -{ - int x, index = -1, framems = 0; - struct ast_format_list fmt = { 0, }; - - for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { - if (AST_FORMAT_LIST[x].bits == format) { - fmt = AST_FORMAT_LIST[x]; - index = x; - break; - } - } - - for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); x++) { - if (pref->order[x] == (index + 1)) { - framems = pref->framing[x]; - break; - } - } - - /* size validation */ - if (!framems) - framems = AST_FORMAT_LIST[index].def_ms; - - if (AST_FORMAT_LIST[index].inc_ms && framems % AST_FORMAT_LIST[index].inc_ms) /* avoid division by zero */ - framems -= framems % AST_FORMAT_LIST[index].inc_ms; - - if (framems < AST_FORMAT_LIST[index].min_ms) - framems = AST_FORMAT_LIST[index].min_ms; - - if (framems > AST_FORMAT_LIST[index].max_ms) - framems = AST_FORMAT_LIST[index].max_ms; - - fmt.cur_ms = framems; - - return fmt; -} - -/*! \brief Pick a codec */ -int ast_codec_choose(struct ast_codec_pref *pref, int formats, int find_best) -{ - int x, ret = 0, slot; - - for (x = 0; x < sizeof(AST_FORMAT_LIST) / sizeof(AST_FORMAT_LIST[0]); 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 & AST_FORMAT_AUDIO_MASK) - return ret; - - ast_debug(4, "Could not find preferred codec - %s\n", find_best ? "Going for the best codec" : "Returning zero codec"); - - return find_best ? ast_best_codec(formats) : 0; -} - -int ast_parse_allow_disallow(struct ast_codec_pref *pref, int *mask, const char *list, int allowing) -{ - int errors = 0; - char *parse = NULL, *this = NULL, *psize = NULL; - int format = 0, framems = 0; - - parse = ast_strdupa(list); - while ((this = strsep(&parse, ","))) { - framems = 0; - if ((psize = strrchr(this, ':'))) { - *psize++ = '\0'; - ast_debug(1, "Packetization for codec: %s is %s\n", this, psize); - framems = atoi(psize); - if (framems < 0) { - framems = 0; - errors++; - ast_log(LOG_WARNING, "Bad packetization value for codec %s\n", this); - } - } - if (!(format = ast_getformatbyname(this))) { - ast_log(LOG_WARNING, "Cannot %s unknown format '%s'\n", allowing ? "allow" : "disallow", this); - errors++; - continue; - } - - if (mask) { - if (allowing) - *mask |= format; - else - *mask &= ~format; - } - - /* Set up a preference list for audio. Do not include video in preferences - since we can not transcode video and have to use whatever is offered - */ - if (pref && (format & AST_FORMAT_AUDIO_MASK)) { - if (strcasecmp(this, "all")) { - if (allowing) { - ast_codec_pref_append(pref, format); - ast_codec_pref_setsize(pref, format, framems); - } - else - ast_codec_pref_remove(pref, format); - } else if (!allowing) { - memset(pref, 0, sizeof(*pref)); - } - } - } - return errors; -} - -static int g723_len(unsigned char buf) -{ - enum frame_type type = buf & TYPE_MASK; - - switch(type) { - 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", type); - } - 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; - 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: - case AST_FORMAT_SLINEAR16: - 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_G722: - case AST_FORMAT_ADPCM: - case AST_FORMAT_G726: - case AST_FORMAT_G726_AAL2: - 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_G723_1: - len = (samples / 240) * 20; - break; - 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: - case AST_FORMAT_SLINEAR16: - len = samples * 2; - break; - case AST_FORMAT_ULAW: - case AST_FORMAT_ALAW: - len = samples; - break; - case AST_FORMAT_G722: - case AST_FORMAT_ADPCM: - case AST_FORMAT_G726: - case AST_FORMAT_G726_AAL2: - 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; -} |