sdp.c
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:2k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- * The contents of this file are subject to the Mozilla Public
- * License Version 1.1 (the "License"); you may not use this file
- * except in compliance with the License. You may obtain a copy of
- * the License at http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS
- * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- * implied. See the License for the specific language governing
- * rights and limitations under the License.
- *
- * The Original Code is MPEG4IP.
- *
- * The Initial Developer of the Original Code is Cisco Systems Inc.
- * Portions created by Cisco Systems Inc. are
- * Copyright (C) Cisco Systems Inc. 2000, 2001. All Rights Reserved.
- *
- * Contributor(s):
- * Dave Mackie dmackie@cisco.com
- */
- #include "quicktime.h"
- int quicktime_sdp_init(quicktime_sdp_t *sdp)
- {
- sdp->string = NULL;
- }
- int quicktime_sdp_set(quicktime_sdp_t *sdp, char *string)
- {
- free(sdp->string);
- if (string != NULL) {
- sdp->string = malloc(strlen(string) + 1);
- strcpy(sdp->string, string);
- } else {
- sdp->string = NULL;
- }
- }
- int quicktime_sdp_append(quicktime_sdp_t *sdp, char *appendString)
- {
- char* newString = malloc(strlen(sdp->string) + strlen(appendString) + 1);
- strcpy(newString, sdp->string);
- strcat(newString, appendString);
- free(sdp->string);
- sdp->string = newString;
- }
- int quicktime_sdp_delete(quicktime_sdp_t *sdp)
- {
- free(sdp->string);
- }
- int quicktime_sdp_dump(quicktime_sdp_t *sdp)
- {
- printf(" sdpn");
- printf(" string %sn", sdp->string);
- }
- int quicktime_read_sdp(quicktime_t *file, quicktime_sdp_t *sdp,
- quicktime_atom_t* sdp_atom)
- {
- int sdpLen = sdp_atom->size - 8;
- free(sdp->string);
- sdp->string = malloc(sdpLen + 1);
- quicktime_read_data(file, sdp->string, sdpLen);
- sdp->string[sdpLen] = ' ';
- }
- int quicktime_write_sdp(quicktime_t *file, quicktime_sdp_t *sdp)
- {
- int i;
- quicktime_atom_t atom;
- if (sdp->string == NULL) {
- return;
- }
- quicktime_atom_write_header(file, &atom, "sdp ");
- quicktime_write_data(file, sdp->string, strlen(sdp->string));
- quicktime_atom_write_footer(file, &atom);
- }