ASTERISK_REGISTER_FILE no longer has any purpose so this commit removes all traces of it. Previously exported symbols removed: * __ast_register_file * __ast_unregister_file * ast_complete_source_filename This also removes the mtx_prof static variable that was declared when MTX_PROFILE was enabled. This variable was only used in lock.c so it is now initialized in that file only. ASTERISK-26480 #close Change-Id: I1074af07d71f9e159c48ef36631aa432c86f9966
705 lines
19 KiB
C
705 lines
19 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Frame and codec manipulation routines
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*
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* \author Mark Spencer <markster@digium.com>
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*/
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/*** MODULEINFO
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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#include "asterisk/_private.h"
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#include "asterisk/lock.h"
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#include "asterisk/frame.h"
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#include "asterisk/format_cache.h"
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#include "asterisk/channel.h"
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#include "asterisk/cli.h"
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#include "asterisk/term.h"
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#include "asterisk/utils.h"
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#include "asterisk/threadstorage.h"
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#include "asterisk/linkedlists.h"
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#include "asterisk/translate.h"
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#include "asterisk/dsp.h"
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#include "asterisk/file.h"
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#if !defined(LOW_MEMORY)
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static void frame_cache_cleanup(void *data);
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/*! \brief A per-thread cache of frame headers */
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AST_THREADSTORAGE_CUSTOM(frame_cache, NULL, frame_cache_cleanup);
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/*!
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* \brief Maximum ast_frame cache size
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*
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* In most cases where the frame header cache will be useful, the size
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* of the cache will stay very small. However, it is not always the case that
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* the same thread that allocates the frame will be the one freeing them, so
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* sometimes a thread will never have any frames in its cache, or the cache
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* will never be pulled from. For the latter case, we limit the maximum size.
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*/
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#define FRAME_CACHE_MAX_SIZE 10
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/*! \brief This is just so ast_frames, a list head struct for holding a list of
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* ast_frame structures, is defined. */
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AST_LIST_HEAD_NOLOCK(ast_frames, ast_frame);
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struct ast_frame_cache {
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struct ast_frames list;
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size_t size;
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};
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#endif
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struct ast_frame ast_null_frame = { AST_FRAME_NULL, };
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static struct ast_frame *ast_frame_header_new(void)
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{
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struct ast_frame *f;
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#if !defined(LOW_MEMORY)
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struct ast_frame_cache *frames;
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if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) {
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if ((f = AST_LIST_REMOVE_HEAD(&frames->list, frame_list))) {
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size_t mallocd_len = f->mallocd_hdr_len;
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memset(f, 0, sizeof(*f));
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f->mallocd_hdr_len = mallocd_len;
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f->mallocd = AST_MALLOCD_HDR;
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frames->size--;
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return f;
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}
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}
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if (!(f = ast_calloc_cache(1, sizeof(*f))))
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return NULL;
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#else
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if (!(f = ast_calloc(1, sizeof(*f))))
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return NULL;
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#endif
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f->mallocd_hdr_len = sizeof(*f);
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return f;
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}
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#if !defined(LOW_MEMORY)
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static void frame_cache_cleanup(void *data)
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{
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struct ast_frame_cache *frames = data;
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struct ast_frame *f;
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while ((f = AST_LIST_REMOVE_HEAD(&frames->list, frame_list)))
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ast_free(f);
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ast_free(frames);
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}
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#endif
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static void __frame_free(struct ast_frame *fr, int cache)
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{
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if (!fr->mallocd)
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return;
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#if !defined(LOW_MEMORY)
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if (cache && fr->mallocd == AST_MALLOCD_HDR) {
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/* Cool, only the header is malloc'd, let's just cache those for now
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* to keep things simple... */
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struct ast_frame_cache *frames;
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if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames))) &&
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(frames->size < FRAME_CACHE_MAX_SIZE)) {
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if ((fr->frametype == AST_FRAME_VOICE) || (fr->frametype == AST_FRAME_VIDEO) ||
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(fr->frametype == AST_FRAME_IMAGE)) {
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ao2_cleanup(fr->subclass.format);
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}
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AST_LIST_INSERT_HEAD(&frames->list, fr, frame_list);
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frames->size++;
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return;
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}
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}
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#endif
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if (fr->mallocd & AST_MALLOCD_DATA) {
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if (fr->data.ptr)
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ast_free(fr->data.ptr - fr->offset);
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}
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if (fr->mallocd & AST_MALLOCD_SRC) {
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if (fr->src)
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ast_free((void *) fr->src);
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}
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if (fr->mallocd & AST_MALLOCD_HDR) {
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if ((fr->frametype == AST_FRAME_VOICE) || (fr->frametype == AST_FRAME_VIDEO) ||
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(fr->frametype == AST_FRAME_IMAGE)) {
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ao2_cleanup(fr->subclass.format);
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}
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ast_free(fr);
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} else {
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fr->mallocd = 0;
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}
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}
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void ast_frame_free(struct ast_frame *frame, int cache)
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{
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struct ast_frame *next;
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for (next = AST_LIST_NEXT(frame, frame_list);
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frame;
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frame = next, next = frame ? AST_LIST_NEXT(frame, frame_list) : NULL) {
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__frame_free(frame, cache);
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}
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}
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void ast_frame_dtor(struct ast_frame *f)
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{
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if (f) {
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ast_frfree(f);
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}
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}
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/*!
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* \brief 'isolates' a frame by duplicating non-malloc'ed components
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* (header, src, data).
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* On return all components are malloc'ed
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*/
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struct ast_frame *ast_frisolate(struct ast_frame *fr)
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{
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struct ast_frame *out;
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void *newdata;
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/* if none of the existing frame is malloc'd, let ast_frdup() do it
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since it is more efficient
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*/
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if (fr->mallocd == 0) {
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return ast_frdup(fr);
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}
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/* if everything is already malloc'd, we are done */
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if ((fr->mallocd & (AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA)) ==
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(AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA)) {
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return fr;
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}
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if (!(fr->mallocd & AST_MALLOCD_HDR)) {
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/* Allocate a new header if needed */
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if (!(out = ast_frame_header_new())) {
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return NULL;
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}
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out->frametype = fr->frametype;
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if ((fr->frametype == AST_FRAME_VOICE) || (fr->frametype == AST_FRAME_VIDEO) ||
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(fr->frametype == AST_FRAME_IMAGE)) {
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out->subclass.format = ao2_bump(fr->subclass.format);
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} else {
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memcpy(&out->subclass, &fr->subclass, sizeof(out->subclass));
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}
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out->datalen = fr->datalen;
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out->samples = fr->samples;
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out->offset = fr->offset;
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/* Copy the timing data */
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ast_copy_flags(out, fr, AST_FLAGS_ALL);
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if (ast_test_flag(fr, AST_FRFLAG_HAS_TIMING_INFO)) {
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out->ts = fr->ts;
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out->len = fr->len;
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out->seqno = fr->seqno;
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}
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} else {
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out = fr;
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}
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if (!(fr->mallocd & AST_MALLOCD_SRC) && fr->src) {
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if (!(out->src = ast_strdup(fr->src))) {
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if (out != fr) {
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ast_free(out);
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}
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return NULL;
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}
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} else {
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out->src = fr->src;
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fr->src = NULL;
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fr->mallocd &= ~AST_MALLOCD_SRC;
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}
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if (!(fr->mallocd & AST_MALLOCD_DATA)) {
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if (!fr->datalen) {
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out->data.uint32 = fr->data.uint32;
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out->mallocd = AST_MALLOCD_HDR | AST_MALLOCD_SRC;
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return out;
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}
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if (!(newdata = ast_malloc(fr->datalen + AST_FRIENDLY_OFFSET))) {
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if (out->src != fr->src) {
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ast_free((void *) out->src);
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}
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if (out != fr) {
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ast_free(out);
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}
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return NULL;
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}
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newdata += AST_FRIENDLY_OFFSET;
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out->offset = AST_FRIENDLY_OFFSET;
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out->datalen = fr->datalen;
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memcpy(newdata, fr->data.ptr, fr->datalen);
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out->data.ptr = newdata;
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} else {
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out->data = fr->data;
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memset(&fr->data, 0, sizeof(fr->data));
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fr->mallocd &= ~AST_MALLOCD_DATA;
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}
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out->mallocd = AST_MALLOCD_HDR | AST_MALLOCD_SRC | AST_MALLOCD_DATA;
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return out;
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}
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struct ast_frame *ast_frdup(const struct ast_frame *f)
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{
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struct ast_frame *out = NULL;
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int len, srclen = 0;
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void *buf = NULL;
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#if !defined(LOW_MEMORY)
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struct ast_frame_cache *frames;
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#endif
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/* Start with standard stuff */
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len = sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen;
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/* If we have a source, add space for it */
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/*
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* XXX Watch out here - if we receive a src which is not terminated
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* properly, we can be easily attacked. Should limit the size we deal with.
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*/
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if (f->src)
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srclen = strlen(f->src);
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if (srclen > 0)
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len += srclen + 1;
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#if !defined(LOW_MEMORY)
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if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) {
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AST_LIST_TRAVERSE_SAFE_BEGIN(&frames->list, out, frame_list) {
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if (out->mallocd_hdr_len >= len) {
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size_t mallocd_len = out->mallocd_hdr_len;
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AST_LIST_REMOVE_CURRENT(frame_list);
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memset(out, 0, sizeof(*out));
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out->mallocd_hdr_len = mallocd_len;
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buf = out;
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frames->size--;
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break;
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}
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}
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AST_LIST_TRAVERSE_SAFE_END;
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}
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#endif
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if (!buf) {
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if (!(buf = ast_calloc_cache(1, len)))
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return NULL;
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out = buf;
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out->mallocd_hdr_len = len;
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}
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out->frametype = f->frametype;
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out->subclass = f->subclass;
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if ((f->frametype == AST_FRAME_VOICE) || (f->frametype == AST_FRAME_VIDEO) ||
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(f->frametype == AST_FRAME_IMAGE)) {
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ao2_bump(out->subclass.format);
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}
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out->datalen = f->datalen;
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out->samples = f->samples;
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out->delivery = f->delivery;
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/* Even though this new frame was allocated from the heap, we can't mark it
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* with AST_MALLOCD_HDR, AST_MALLOCD_DATA and AST_MALLOCD_SRC, because that
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* would cause ast_frfree() to attempt to individually free each of those
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* under the assumption that they were separately allocated. Since this frame
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* was allocated in a single allocation, we'll only mark it as if the header
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* was heap-allocated; this will result in the entire frame being properly freed.
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*/
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out->mallocd = AST_MALLOCD_HDR;
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out->offset = AST_FRIENDLY_OFFSET;
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if (out->datalen) {
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out->data.ptr = buf + sizeof(*out) + AST_FRIENDLY_OFFSET;
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memcpy(out->data.ptr, f->data.ptr, out->datalen);
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} else {
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out->data.uint32 = f->data.uint32;
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}
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if (srclen > 0) {
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/* This may seem a little strange, but it's to avoid a gcc (4.2.4) compiler warning */
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char *src;
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out->src = buf + sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen;
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src = (char *) out->src;
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/* Must have space since we allocated for it */
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strcpy(src, f->src);
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}
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ast_copy_flags(out, f, AST_FLAGS_ALL);
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out->ts = f->ts;
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out->len = f->len;
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out->seqno = f->seqno;
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return out;
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}
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void ast_swapcopy_samples(void *dst, const void *src, int samples)
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{
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int i;
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unsigned short *dst_s = dst;
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const unsigned short *src_s = src;
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for (i = 0; i < samples; i++)
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dst_s[i] = (src_s[i]<<8) | (src_s[i]>>8);
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}
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void ast_frame_subclass2str(struct ast_frame *f, char *subclass, size_t slen, char *moreinfo, size_t mlen)
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{
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switch(f->frametype) {
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case AST_FRAME_DTMF_BEGIN:
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if (slen > 1) {
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subclass[0] = f->subclass.integer;
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subclass[1] = '\0';
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}
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break;
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case AST_FRAME_DTMF_END:
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if (slen > 1) {
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subclass[0] = f->subclass.integer;
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subclass[1] = '\0';
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}
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break;
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case AST_FRAME_CONTROL:
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switch (f->subclass.integer) {
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case AST_CONTROL_HANGUP:
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ast_copy_string(subclass, "Hangup", slen);
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break;
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case AST_CONTROL_RING:
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ast_copy_string(subclass, "Ring", slen);
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break;
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case AST_CONTROL_RINGING:
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ast_copy_string(subclass, "Ringing", slen);
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break;
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case AST_CONTROL_ANSWER:
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ast_copy_string(subclass, "Answer", slen);
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break;
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case AST_CONTROL_BUSY:
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ast_copy_string(subclass, "Busy", slen);
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break;
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case AST_CONTROL_TAKEOFFHOOK:
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ast_copy_string(subclass, "Take Off Hook", slen);
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break;
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case AST_CONTROL_OFFHOOK:
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ast_copy_string(subclass, "Line Off Hook", slen);
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break;
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case AST_CONTROL_CONGESTION:
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ast_copy_string(subclass, "Congestion", slen);
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break;
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case AST_CONTROL_FLASH:
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ast_copy_string(subclass, "Flash", slen);
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break;
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case AST_CONTROL_WINK:
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ast_copy_string(subclass, "Wink", slen);
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break;
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case AST_CONTROL_OPTION:
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ast_copy_string(subclass, "Option", slen);
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break;
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case AST_CONTROL_RADIO_KEY:
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ast_copy_string(subclass, "Key Radio", slen);
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break;
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case AST_CONTROL_RADIO_UNKEY:
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ast_copy_string(subclass, "Unkey Radio", slen);
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break;
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case AST_CONTROL_HOLD:
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ast_copy_string(subclass, "Hold", slen);
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break;
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case AST_CONTROL_UNHOLD:
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ast_copy_string(subclass, "Unhold", slen);
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break;
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case AST_CONTROL_T38_PARAMETERS: {
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char *message = "Unknown";
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if (f->datalen != sizeof(struct ast_control_t38_parameters)) {
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message = "Invalid";
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} else {
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struct ast_control_t38_parameters *parameters = f->data.ptr;
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enum ast_control_t38 state = parameters->request_response;
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if (state == AST_T38_REQUEST_NEGOTIATE)
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message = "Negotiation Requested";
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else if (state == AST_T38_REQUEST_TERMINATE)
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message = "Negotiation Request Terminated";
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else if (state == AST_T38_NEGOTIATED)
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message = "Negotiated";
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else if (state == AST_T38_TERMINATED)
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message = "Terminated";
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else if (state == AST_T38_REFUSED)
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message = "Refused";
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}
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snprintf(subclass, slen, "T38_Parameters/%s", message);
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break;
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}
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case -1:
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ast_copy_string(subclass, "Stop generators", slen);
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break;
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default:
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snprintf(subclass, slen, "Unknown control '%d'", f->subclass.integer);
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}
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break;
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case AST_FRAME_NULL:
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ast_copy_string(subclass, "N/A", slen);
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break;
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case AST_FRAME_IAX:
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/* Should never happen */
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snprintf(subclass, slen, "IAX Frametype %d", f->subclass.integer);
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break;
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case AST_FRAME_BRIDGE_ACTION:
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/* Should never happen */
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snprintf(subclass, slen, "Bridge Frametype %d", f->subclass.integer);
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break;
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case AST_FRAME_BRIDGE_ACTION_SYNC:
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/* Should never happen */
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snprintf(subclass, slen, "Synchronous Bridge Frametype %d", f->subclass.integer);
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break;
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case AST_FRAME_TEXT:
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ast_copy_string(subclass, "N/A", slen);
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if (moreinfo) {
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ast_copy_string(moreinfo, f->data.ptr, mlen);
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}
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break;
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case AST_FRAME_IMAGE:
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snprintf(subclass, slen, "Image format %s\n", ast_format_get_name(f->subclass.format));
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break;
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case AST_FRAME_HTML:
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switch (f->subclass.integer) {
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case AST_HTML_URL:
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ast_copy_string(subclass, "URL", slen);
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if (moreinfo) {
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ast_copy_string(moreinfo, f->data.ptr, mlen);
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}
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break;
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case AST_HTML_DATA:
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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;
|
|
default:
|
|
ast_copy_string(subclass, "Unknown Subclass", slen);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void 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_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;
|
|
default:
|
|
snprintf(ftype, len, "Unknown Frametype '%u'", frame_type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*! 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;
|
|
}
|
|
|
|
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_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;
|
|
}
|