90 lines
1.9 KiB
C
Executable File
90 lines
1.9 KiB
C
Executable File
/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* Frame manipulation routines
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*
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* Copyright (C) 1999, Mark Spencer
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*
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* Mark Spencer <markster@linux-support.net>
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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
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*/
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#include <asterisk/frame.h>
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#include <asterisk/logger.h>
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#include <stdlib.h>
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#include <string.h>
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/*
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* Important: I should be made more efficient. Frame headers should
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* most definitely be cached
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*/
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void ast_frfree(struct ast_frame *fr)
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{
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if (fr->mallocd & AST_MALLOCD_DATA) {
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if (fr->data)
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free(fr->data - 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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free(fr->src);
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}
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if (fr->mallocd & AST_MALLOCD_HDR) {
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free(fr);
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}
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}
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void ast_frchain(struct ast_frame_chain *fc)
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{
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struct ast_frame_chain *last;
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while(fc) {
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last = fc;
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fc = fc->next;
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if (last->fr)
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ast_frfree(last->fr);
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free(last);
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}
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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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if (!(fr->mallocd & AST_MALLOCD_HDR)) {
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/* Allocate a new header if needed */
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out = malloc(sizeof(struct ast_frame));
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if (!out) {
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ast_log(LOG_WARNING, "Out of memory\n");
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return NULL;
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}
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out->frametype = fr->frametype;
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out->subclass = fr->subclass;
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out->datalen = 0;
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out->timelen = fr->timelen;
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out->offset = 0;
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out->src = NULL;
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out->data = NULL;
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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)) {
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if (fr->src)
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out->src = strdup(fr->src);
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} else
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out->src = fr->src;
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if (!(fr->mallocd & AST_MALLOCD_DATA)) {
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out->data = malloc(fr->datalen + fr->offset);
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out->data += fr->offset;
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out->offset = fr->offset;
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out->datalen = fr->datalen;
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memcpy(out->data, fr->data, fr->datalen);
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if (!out->data) {
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ast_log(LOG_WARNING, "Out of memory\n");
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return NULL;
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}
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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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