asterisk/main/frame.c

870 lines
24 KiB
C
Raw Permalink Normal View History

2023-05-25 18:45:57 +00:00
/*
* 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>
*/
/*** MODULEINFO
<support_level>core</support_level>
***/
#include "asterisk.h"
#include "asterisk/_private.h"
#include "asterisk/lock.h"
#include "asterisk/frame.h"
#include "asterisk/format_cache.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"
#include <math.h>
#if (defined(LOW_MEMORY) || defined(MALLOC_DEBUG)) && !defined(NO_FRAME_CACHE)
#define NO_FRAME_CACHE
#endif
#if !defined(NO_FRAME_CACHE)
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
struct ast_frame ast_null_frame = { AST_FRAME_NULL, };
static struct ast_frame *ast_frame_header_new(const char *file, int line, const char *func)
{
struct ast_frame *f;
#if !defined(NO_FRAME_CACHE)
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;
frames->size--;
return f;
}
}
#endif
if (!(f = __ast_calloc(1, sizeof(*f), file, line, func))) {
return NULL;
}
f->mallocd_hdr_len = sizeof(*f);
return f;
}
#if !defined(NO_FRAME_CACHE)
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
static void __frame_free(struct ast_frame *fr, int cache)
{
if (!fr->mallocd)
return;
#if !defined(NO_FRAME_CACHE)
if (fr->mallocd == AST_MALLOCD_HDR
&& cache
&& ast_opt_cache_media_frames) {
/* Cool, only the header is malloc'd, let's just cache those for now
* to keep things simple... */
struct ast_frame_cache *frames;
frames = ast_threadstorage_get(&frame_cache, sizeof(*frames));
if (frames && frames->size < FRAME_CACHE_MAX_SIZE) {
if (fr->frametype == AST_FRAME_VOICE
|| fr->frametype == AST_FRAME_VIDEO
|| fr->frametype == AST_FRAME_IMAGE) {
ao2_cleanup(fr->subclass.format);
} else if (fr->frametype == AST_FRAME_CONTROL && fr->subclass.integer == AST_CONTROL_ANSWER) {
ao2_cleanup(fr->subclass.topology);
}
AST_LIST_INSERT_HEAD(&frames->list, fr, frame_list);
frames->size++;
return;
}
}
#endif
if (fr->mallocd & AST_MALLOCD_DATA) {
if (fr->data.ptr) {
ast_free(fr->data.ptr - fr->offset);
}
}
if (fr->mallocd & AST_MALLOCD_SRC) {
ast_free((void *) fr->src);
}
if (fr->mallocd & AST_MALLOCD_HDR) {
if (fr->frametype == AST_FRAME_VOICE
|| fr->frametype == AST_FRAME_VIDEO
|| fr->frametype == AST_FRAME_IMAGE) {
ao2_cleanup(fr->subclass.format);
} else if (fr->frametype == AST_FRAME_CONTROL && fr->subclass.integer == AST_CONTROL_ANSWER) {
ao2_cleanup(fr->subclass.topology);
}
ast_free(fr);
} else {
fr->mallocd = 0;
}
}
void ast_frame_free(struct ast_frame *frame, int cache)
{
struct ast_frame *next;
while (frame) {
next = AST_LIST_NEXT(frame, frame_list);
__frame_free(frame, cache);
frame = next;
}
}
void ast_frame_dtor(struct ast_frame *f)
{
ast_frfree(f);
}
/*!
* \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, const char *file, int line, const char *func)
{
struct ast_frame *out;
void *newdata;
/* if none of the existing frame is malloc'd, let ast_frdup() do it
since it is more efficient
*/
if (fr->mallocd == 0) {
return __ast_frdup(fr, file, line, func);
}
/* if everything is already malloc'd, we are done */
if ((fr->mallocd & (AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA)) ==
(AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA)) {
return fr;
}
if (!(fr->mallocd & AST_MALLOCD_HDR)) {
/* Allocate a new header if needed */
if (!(out = ast_frame_header_new(file, line, func))) {
return NULL;
}
out->frametype = fr->frametype;
out->subclass = fr->subclass;
if ((fr->frametype == AST_FRAME_VOICE) || (fr->frametype == AST_FRAME_VIDEO) ||
(fr->frametype == AST_FRAME_IMAGE)) {
ao2_bump(out->subclass.format);
} else if (fr->frametype == AST_FRAME_VOICE && fr->subclass.integer == AST_CONTROL_ANSWER) {
ao2_bump(out->subclass.topology);
}
out->datalen = fr->datalen;
out->samples = fr->samples;
out->mallocd = AST_MALLOCD_HDR;
out->offset = fr->offset;
/* Copy the timing data */
ast_copy_flags(out, fr, AST_FLAGS_ALL);
if (ast_test_flag(fr, AST_FRFLAG_HAS_TIMING_INFO)) {
out->ts = fr->ts;
out->len = fr->len;
out->seqno = fr->seqno;
}
out->stream_num = fr->stream_num;
} else {
out = fr;
}
if (fr->src) {
/* The original frame has a source string */
if (!(fr->mallocd & AST_MALLOCD_SRC)) {
/*
* The original frame has a non-malloced source string.
*
* Duplicate the string and put it into the isolated frame
* which may also be the original frame.
*/
newdata = ast_strdup(fr->src);
if (!newdata) {
if (out != fr) {
ast_frame_free(out, 0);
}
return NULL;
}
out->src = newdata;
out->mallocd |= AST_MALLOCD_SRC;
} else if (out != fr) {
/* Steal the source string from the original frame. */
out->src = fr->src;
fr->src = NULL;
fr->mallocd &= ~AST_MALLOCD_SRC;
out->mallocd |= AST_MALLOCD_SRC;
}
}
if (!(fr->mallocd & AST_MALLOCD_DATA)) {
/* The original frame has a non-malloced data buffer. */
if (!fr->datalen && fr->frametype != AST_FRAME_TEXT) {
/* Actually it's just an int so we can simply copy it. */
out->data.uint32 = fr->data.uint32;
return out;
}
/*
* Duplicate the data buffer and put it into the isolated frame
* which may also be the original frame.
*/
newdata = ast_malloc(fr->datalen + AST_FRIENDLY_OFFSET);
if (!newdata) {
if (out != fr) {
ast_frame_free(out, 0);
}
return NULL;
}
newdata += AST_FRIENDLY_OFFSET;
out->offset = AST_FRIENDLY_OFFSET;
memcpy(newdata, fr->data.ptr, fr->datalen);
out->data.ptr = newdata;
out->mallocd |= AST_MALLOCD_DATA;
} else if (out != fr) {
/* Steal the data buffer from the original frame. */
out->data = fr->data;
memset(&fr->data, 0, sizeof(fr->data));
fr->mallocd &= ~AST_MALLOCD_DATA;
out->mallocd |= AST_MALLOCD_DATA;
}
return out;
}
struct ast_frame *__ast_frdup(const struct ast_frame *f, const char *file, int line, const char *func)
{
struct ast_frame *out = NULL;
int len, srclen = 0;
void *buf = NULL;
#if !defined(NO_FRAME_CACHE)
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(NO_FRAME_CACHE)
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(1, len, file, line, func)))
return NULL;
out = buf;
out->mallocd_hdr_len = len;
}
out->frametype = f->frametype;
out->subclass = f->subclass;
if ((f->frametype == AST_FRAME_VOICE) || (f->frametype == AST_FRAME_VIDEO) ||
(f->frametype == AST_FRAME_IMAGE)) {
ao2_bump(out->subclass.format);
} else if (f->frametype == AST_FRAME_CONTROL && f->subclass.integer == AST_CONTROL_ANSWER) {
ao2_bump(out->subclass.topology);
}
out->datalen = f->datalen;
out->samples = f->samples;
out->delivery = f->delivery;
/* Even though this new frame was allocated from the heap, we can't mark it
* with AST_MALLOCD_HDR, AST_MALLOCD_DATA and AST_MALLOCD_SRC, because that
* would cause ast_frfree() to attempt to individually free each of those
* under the assumption that they were separately allocated. Since this frame
* was allocated in a single allocation, we'll only mark it as if the header
* was heap-allocated; this will result in the entire frame being properly freed.
*/
out->mallocd = AST_MALLOCD_HDR;
out->offset = AST_FRIENDLY_OFFSET;
/* Make sure that empty text frames have a valid data.ptr */
if (out->datalen || f->frametype == AST_FRAME_TEXT) {
out->data.ptr = buf + sizeof(*out) + AST_FRIENDLY_OFFSET;
memcpy(out->data.ptr, f->data.ptr, out->datalen);
} else {
out->data.uint32 = f->data.uint32;
}
if (srclen > 0) {
/* This may seem a little strange, but it's to avoid a gcc (4.2.4) compiler warning */
char *src;
out->src = buf + sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen;
src = (char *) out->src;
/* Must have space since we allocated for it */
strcpy(src, f->src);
}
ast_copy_flags(out, f, AST_FLAGS_ALL);
out->ts = f->ts;
out->len = f->len;
out->seqno = f->seqno;
out->stream_num = f->stream_num;
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);
}
char *ast_frame_subclass2str(struct ast_frame *f, char *subclass, size_t slen, char *moreinfo, size_t mlen)
{
switch(f->frametype) {
case AST_FRAME_DTMF_BEGIN:
if (slen > 1) {
subclass[0] = f->subclass.integer;
subclass[1] = '\0';
}
break;
case AST_FRAME_DTMF_END:
if (slen > 1) {
subclass[0] = f->subclass.integer;
subclass[1] = '\0';
}
break;
case AST_FRAME_CONTROL:
switch (f->subclass.integer) {
case AST_CONTROL_HANGUP:
ast_copy_string(subclass, "Hangup", slen);
break;
case AST_CONTROL_RING:
ast_copy_string(subclass, "Ring", slen);
break;
case AST_CONTROL_RINGING:
ast_copy_string(subclass, "Ringing", slen);
break;
case AST_CONTROL_ANSWER:
ast_copy_string(subclass, "Answer", slen);
break;
case AST_CONTROL_BUSY:
ast_copy_string(subclass, "Busy", slen);
break;
case AST_CONTROL_TAKEOFFHOOK:
ast_copy_string(subclass, "Take Off Hook", slen);
break;
case AST_CONTROL_OFFHOOK:
ast_copy_string(subclass, "Line Off Hook", slen);
break;
case AST_CONTROL_CONGESTION:
ast_copy_string(subclass, "Congestion", slen);
break;
case AST_CONTROL_FLASH:
ast_copy_string(subclass, "Flash", slen);
break;
case AST_CONTROL_WINK:
ast_copy_string(subclass, "Wink", slen);
break;
case AST_CONTROL_OPTION:
ast_copy_string(subclass, "Option", slen);
break;
case AST_CONTROL_RADIO_KEY:
ast_copy_string(subclass, "Key Radio", slen);
break;
case AST_CONTROL_RADIO_UNKEY:
ast_copy_string(subclass, "Unkey Radio", slen);
break;
case AST_CONTROL_PROGRESS:
ast_copy_string(subclass, "Progress", slen);
break;
case AST_CONTROL_PROCEEDING:
ast_copy_string(subclass, "Proceeding", slen);
break;
case AST_CONTROL_HOLD:
ast_copy_string(subclass, "Hold", slen);
break;
case AST_CONTROL_UNHOLD:
ast_copy_string(subclass, "Unhold", slen);
break;
case AST_CONTROL_VIDUPDATE:
ast_copy_string(subclass, "Video Update", slen);
break;
case AST_CONTROL_T38_PARAMETERS: {
char *message = "Unknown";
if (f->datalen != sizeof(struct ast_control_t38_parameters)) {
message = "Invalid";
} else {
struct ast_control_t38_parameters *parameters = f->data.ptr;
enum ast_control_t38 state = parameters->request_response;
if (state == AST_T38_REQUEST_NEGOTIATE)
message = "Negotiation Requested";
else if (state == AST_T38_REQUEST_TERMINATE)
message = "Negotiation Request Terminated";
else if (state == AST_T38_NEGOTIATED)
message = "Negotiated";
else if (state == AST_T38_TERMINATED)
message = "Terminated";
else if (state == AST_T38_REFUSED)
message = "Refused";
}
snprintf(subclass, slen, "T38_Parameters/%s", message);
break;
}
case AST_CONTROL_STREAM_STOP:
ast_copy_string(subclass, "Stop stream", slen);
break;
case AST_CONTROL_STREAM_SUSPEND:
ast_copy_string(subclass, "Suspend stream", slen);
break;
case AST_CONTROL_STREAM_RESTART:
ast_copy_string(subclass, "Restart stream", slen);
break;
case AST_CONTROL_STREAM_REVERSE:
ast_copy_string(subclass, "Reverse stream", slen);
break;
case AST_CONTROL_STREAM_FORWARD:
ast_copy_string(subclass, "Forward stream", slen);
break;
case AST_CONTROL_RECORD_CANCEL:
ast_copy_string(subclass, "Cancel stream", slen);
break;
case AST_CONTROL_RECORD_STOP:
ast_copy_string(subclass, "Record stop", slen);
break;
case AST_CONTROL_RECORD_SUSPEND:
ast_copy_string(subclass, "Record suspend", slen);
break;
case AST_CONTROL_RECORD_MUTE:
ast_copy_string(subclass, "Record mute", slen);
break;
case AST_CONTROL_SRCUPDATE:
ast_copy_string(subclass, "Media source update", slen);
break;
case AST_CONTROL_TRANSFER:
ast_copy_string(subclass, "Transfer", slen);
break;
case AST_CONTROL_CONNECTED_LINE:
ast_copy_string(subclass, "Connected line update", slen);
break;
case AST_CONTROL_REDIRECTING:
ast_copy_string(subclass, "Redirect", slen);
break;
case AST_CONTROL_CC:
ast_copy_string(subclass, "CC", slen);
break;
case AST_CONTROL_SRCCHANGE:
ast_copy_string(subclass, "Media SSRC change", slen);
break;
case AST_CONTROL_READ_ACTION:
ast_copy_string(subclass, "Read action", slen);
break;
case AST_CONTROL_AOC:
ast_copy_string(subclass, "AOC", slen);
break;
case AST_CONTROL_END_OF_Q:
ast_copy_string(subclass, "Endof Q", slen);
break;
case AST_CONTROL_INCOMPLETE:
ast_copy_string(subclass, "Incomplete", slen);
break;
case AST_CONTROL_MCID:
ast_copy_string(subclass, "MCID", slen);
break;
case AST_CONTROL_UPDATE_RTP_PEER:
ast_copy_string(subclass, "Update RTP peer", slen);
break;
case AST_CONTROL_PVT_CAUSE_CODE:
ast_copy_string(subclass, "Private Cause Code", slen);
break;
case AST_CONTROL_MASQUERADE_NOTIFY:
ast_copy_string(subclass, "Masquerade notify", slen);
break;
case AST_CONTROL_STREAM_TOPOLOGY_REQUEST_CHANGE:
ast_copy_string(subclass, "Stream topology request change", slen);
break;
case AST_CONTROL_STREAM_TOPOLOGY_CHANGED:
ast_copy_string(subclass, "Stream topology changed", slen);
break;
case AST_CONTROL_STREAM_TOPOLOGY_SOURCE_CHANGED:
ast_copy_string(subclass, "Stream topology source changed", slen);
break;
case -1:
ast_copy_string(subclass, "Stop generators", slen);
break;
default:
snprintf(subclass, slen, "Unknown control '%d'", f->subclass.integer);
}
break;
case AST_FRAME_NULL:
ast_copy_string(subclass, "N/A", slen);
break;
case AST_FRAME_IAX:
/* Should never happen */
snprintf(subclass, slen, "IAX Frametype %d", f->subclass.integer);
break;
case AST_FRAME_BRIDGE_ACTION:
/* Should never happen */
snprintf(subclass, slen, "Bridge Frametype %d", f->subclass.integer);
break;
case AST_FRAME_BRIDGE_ACTION_SYNC:
/* Should never happen */
snprintf(subclass, slen, "Synchronous Bridge Frametype %d", f->subclass.integer);
break;
case AST_FRAME_TEXT:
ast_copy_string(subclass, "N/A", slen);
if (moreinfo) {
ast_copy_string(moreinfo, f->data.ptr, mlen);
}
break;
case AST_FRAME_IMAGE:
snprintf(subclass, slen, "Image format %s\n", ast_format_get_name(f->subclass.format));
break;
case AST_FRAME_HTML:
switch (f->subclass.integer) {
case AST_HTML_URL:
ast_copy_string(subclass, "URL", slen);
if (moreinfo) {
ast_copy_string(moreinfo, f->data.ptr, mlen);
}
break;
case AST_HTML_DATA:
ast_copy_string(subclass, "Data", slen);
break;
case AST_HTML_BEGIN:
ast_copy_string(subclass, "Begin", slen);
break;
case AST_HTML_END:
ast_copy_string(subclass, "End", slen);
break;
case AST_HTML_LDCOMPLETE:
ast_copy_string(subclass, "Load Complete", slen);
break;
case AST_HTML_NOSUPPORT:
ast_copy_string(subclass, "No Support", slen);
break;
case AST_HTML_LINKURL:
ast_copy_string(subclass, "Link URL", slen);
if (moreinfo) {
ast_copy_string(moreinfo, f->data.ptr, mlen);
}
break;
case AST_HTML_UNLINK:
ast_copy_string(subclass, "Unlink", slen);
break;
case AST_HTML_LINKREJECT:
ast_copy_string(subclass, "Link Reject", slen);
break;
default:
snprintf(subclass, slen, "Unknown HTML frame '%d'\n", f->subclass.integer);
break;
}
break;
case AST_FRAME_MODEM:
switch (f->subclass.integer) {
case AST_MODEM_T38:
ast_copy_string(subclass, "T.38", slen);
break;
case AST_MODEM_V150:
ast_copy_string(subclass, "V.150", slen);
break;
default:
snprintf(subclass, slen, "Unknown MODEM frame '%d'\n", f->subclass.integer);
break;
}
break;
case AST_FRAME_RTCP:
ast_copy_string(subclass, "RTCP", slen);
default:
ast_copy_string(subclass, "Unknown Subclass", slen);
break;
}
return subclass;
}
char *ast_frame_type2str(enum ast_frame_type frame_type, char *ftype, size_t len)
{
switch (frame_type) {
case AST_FRAME_DTMF_BEGIN:
ast_copy_string(ftype, "DTMF Begin", len);
break;
case AST_FRAME_DTMF_END:
ast_copy_string(ftype, "DTMF End", len);
break;
case AST_FRAME_CONTROL:
ast_copy_string(ftype, "Control", len);
break;
case AST_FRAME_NULL:
ast_copy_string(ftype, "Null Frame", len);
break;
case AST_FRAME_IAX:
/* Should never happen */
ast_copy_string(ftype, "IAX Specific", len);
break;
case AST_FRAME_BRIDGE_ACTION:
/* Should never happen */
ast_copy_string(ftype, "Bridge Specific", len);
break;
case AST_FRAME_BRIDGE_ACTION_SYNC:
/* Should never happen */
ast_copy_string(ftype, "Bridge Specific", len);
break;
case AST_FRAME_TEXT:
ast_copy_string(ftype, "Text", len);
break;
case AST_FRAME_TEXT_DATA:
ast_copy_string(ftype, "Text Data", len);
break;
case AST_FRAME_IMAGE:
ast_copy_string(ftype, "Image", len);
break;
case AST_FRAME_HTML:
ast_copy_string(ftype, "HTML", len);
break;
case AST_FRAME_MODEM:
ast_copy_string(ftype, "Modem", len);
break;
case AST_FRAME_VOICE:
ast_copy_string(ftype, "Voice", len);
break;
case AST_FRAME_VIDEO:
ast_copy_string(ftype, "Video", len);
break;
case AST_FRAME_RTCP:
ast_copy_string(ftype, "RTCP", len);
break;
default:
snprintf(ftype, len, "Unknown Frametype '%u'", frame_type);
break;
}
return ftype;
}
/*! 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_verb(-1, "%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;
}
if (f->frametype == AST_FRAME_RTCP) {
return;
}
ast_frame_type2str(f->frametype, ftype, sizeof(ftype));
ast_frame_subclass2str(f, subclass, sizeof(subclass), moreinfo, sizeof(moreinfo));
if (!ast_strlen_zero(moreinfo))
ast_verb(-1, "%s [ TYPE: %s (%u) 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.integer,
term_color(cmn, moreinfo, COLOR_BRGREEN, COLOR_BLACK, sizeof(cmn)),
term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn)));
else
ast_verb(-1, "%s [ TYPE: %s (%u) 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.integer,
term_color(cn, name, COLOR_YELLOW, COLOR_BLACK, sizeof(cn)));
}
int ast_frame_adjust_volume(struct ast_frame *f, int adjustment)
{
int count;
short *fdata = f->data.ptr;
short adjust_value = abs(adjustment);
if ((f->frametype != AST_FRAME_VOICE) || !(ast_format_cache_is_slinear(f->subclass.format))) {
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_adjust_volume_float(struct ast_frame *f, float adjustment)
{
int count;
short *fdata = f->data.ptr;
float adjust_value = fabs(adjustment);
if ((f->frametype != AST_FRAME_VOICE) || !(ast_format_cache_is_slinear(f->subclass.format))) {
return -1;
}
if (!adjustment) {
return 0;
}
for (count = 0; count < f->samples; count++) {
if (adjustment > 0) {
ast_slinear_saturated_multiply_float(&fdata[count], &adjust_value);
} else if (adjustment < 0) {
ast_slinear_saturated_divide_float(&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) || (ast_format_cmp(f1->subclass.format, ast_format_slin) != AST_FORMAT_CMP_NOT_EQUAL))
return -1;
if ((f2->frametype != AST_FRAME_VOICE) || (ast_format_cmp(f2->subclass.format, ast_format_slin) != AST_FORMAT_CMP_NOT_EQUAL))
return -1;
if (f1->samples != f2->samples)
return -1;
for (count = 0, data1 = f1->data.ptr, data2 = f2->data.ptr;
count < f1->samples;
count++, data1++, data2++)
ast_slinear_saturated_add(data1, data2);
return 0;
}
int ast_frame_clear(struct ast_frame *frame)
{
struct ast_frame *next;
for (next = AST_LIST_NEXT(frame, frame_list);
frame;
frame = next, next = frame ? AST_LIST_NEXT(frame, frame_list) : NULL) {
memset(frame->data.ptr, 0, frame->datalen);
}
return 0;
}