747beb1ed1
In all non-pbx modules, AST_MODULE_LOAD_FAILURE has been changed to AST_MODULE_LOAD_DECLINE. This prevents asterisk from exiting if a module can't be loaded. If the user wishes to retain the FAILURE behavior for a specific module, they can use the "require" or "preload-require" keyword in modules.conf. A new API was added to logger: ast_is_logger_initialized(). This allows asterisk.c/check_init() to print to the error log once the logger subsystem is ready instead of just to stdout. If something does fail before the logger is initialized, we now print to stderr instead of stdout. Change-Id: I5f4b50623d9b5a6cb7c5624a8c5c1274c13b2b25
116 lines
2.6 KiB
C
116 lines
2.6 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 JPEG File format support.
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*
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* \arg File name extension: jpeg, jpg
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* \ingroup formats
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*/
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/*** MODULEINFO
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<support_level>extended</support_level>
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***/
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#include "asterisk.h"
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#include "asterisk/mod_format.h"
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#include "asterisk/module.h"
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#include "asterisk/image.h"
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#include "asterisk/endian.h"
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#include "asterisk/format_cache.h"
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static struct ast_frame *jpeg_read_image(int fd, int len)
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{
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struct ast_frame fr;
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int res;
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char buf[65536];
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if (len > sizeof(buf) || len < 0) {
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ast_log(LOG_WARNING, "JPEG image too large to read\n");
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return NULL;
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}
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res = read(fd, buf, len);
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if (res < len) {
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ast_log(LOG_WARNING, "Only read %d of %d bytes: %s\n", res, len, strerror(errno));
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}
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memset(&fr, 0, sizeof(fr));
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fr.frametype = AST_FRAME_IMAGE;
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fr.subclass.format = ast_format_jpeg;
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fr.data.ptr = buf;
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fr.src = "JPEG Read";
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fr.datalen = len;
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return ast_frisolate(&fr);
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}
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static int jpeg_identify(int fd)
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{
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char buf[10];
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int res;
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res = read(fd, buf, sizeof(buf));
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if (res < sizeof(buf))
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return 0;
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if (memcmp(buf + 6, "JFIF", 4))
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return 0;
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return 1;
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}
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static int jpeg_write_image(int fd, struct ast_frame *fr)
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{
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int res=0;
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if (fr->datalen) {
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res = write(fd, fr->data.ptr, fr->datalen);
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if (res != fr->datalen) {
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ast_log(LOG_WARNING, "Only wrote %d of %d bytes: %s\n", res, fr->datalen, strerror(errno));
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return -1;
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}
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}
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return res;
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}
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static struct ast_imager jpeg_format = {
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.name = "jpg",
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.desc = "JPEG (Joint Picture Experts Group)",
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.exts = "jpg|jpeg",
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.read_image = jpeg_read_image,
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.identify = jpeg_identify,
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.write_image = jpeg_write_image,
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};
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static int load_module(void)
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{
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jpeg_format.format = ast_format_jpeg;
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if (ast_image_register(&jpeg_format))
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return AST_MODULE_LOAD_DECLINE;
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return AST_MODULE_LOAD_SUCCESS;
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}
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static int unload_module(void)
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{
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ast_image_unregister(&jpeg_format);
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return 0;
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}
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AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "jpeg (joint picture experts group) image format",
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.support_level = AST_MODULE_SUPPORT_EXTENDED,
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.load = load_module,
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.unload = unload_module,
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.load_pri = AST_MODPRI_APP_DEPEND
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);
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