mirror of
https://github.com/asterisk/asterisk.git
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merge new_loader_completion branch, including (at least):
- restructured build tree and makefiles to eliminate recursion problems - support for embedded modules - support for static builds - simpler cross-compilation support - simpler module/loader interface (no exported symbols) git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@40722 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kevin P. Fleming
210
main/image.c
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210
main/image.c
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2006, 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 Image Management
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*
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* \author Mark Spencer <markster@digium.com>
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <signal.h>
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#include <errno.h>
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#include <unistd.h>
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#include "asterisk/sched.h"
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#include "asterisk/options.h"
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#include "asterisk/channel.h"
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#include "asterisk/logger.h"
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#include "asterisk/file.h"
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#include "asterisk/image.h"
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#include "asterisk/translate.h"
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#include "asterisk/cli.h"
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#include "asterisk/lock.h"
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static AST_LIST_HEAD_STATIC(imagers, ast_imager);
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int ast_image_register(struct ast_imager *img)
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{
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if (option_verbose > 1)
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ast_verbose(VERBOSE_PREFIX_2 "Registered format '%s' (%s)\n", img->name, img->desc);
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AST_LIST_LOCK(&imagers);
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AST_LIST_INSERT_HEAD(&imagers, img, list);
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AST_LIST_UNLOCK(&imagers);
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return 0;
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}
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void ast_image_unregister(struct ast_imager *img)
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{
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struct ast_imager *i;
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AST_LIST_LOCK(&imagers);
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AST_LIST_TRAVERSE_SAFE_BEGIN(&imagers, i, list) {
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if (i == img) {
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AST_LIST_REMOVE_CURRENT(&imagers, list);
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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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AST_LIST_UNLOCK(&imagers);
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if (i && (option_verbose > 1))
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ast_verbose(VERBOSE_PREFIX_2 "Unregistered format '%s' (%s)\n", img->name, img->desc);
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}
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int ast_supports_images(struct ast_channel *chan)
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{
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if (!chan || !chan->tech)
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return 0;
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if (!chan->tech->send_image)
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return 0;
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return 1;
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}
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static int file_exists(char *filename)
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{
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int res;
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struct stat st;
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res = stat(filename, &st);
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if (!res)
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return st.st_size;
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return 0;
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}
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static void make_filename(char *buf, int len, char *filename, const char *preflang, char *ext)
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{
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if (filename[0] == '/') {
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if (!ast_strlen_zero(preflang))
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snprintf(buf, len, "%s-%s.%s", filename, preflang, ext);
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else
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snprintf(buf, len, "%s.%s", filename, ext);
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} else {
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if (!ast_strlen_zero(preflang))
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snprintf(buf, len, "%s/%s/%s-%s.%s", ast_config_AST_DATA_DIR, "images", filename, preflang, ext);
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else
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snprintf(buf, len, "%s/%s/%s.%s", ast_config_AST_DATA_DIR, "images", filename, ext);
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}
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}
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struct ast_frame *ast_read_image(char *filename, const char *preflang, int format)
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{
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struct ast_imager *i;
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char buf[256];
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char tmp[80];
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char *e;
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struct ast_imager *found = NULL;
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int fd;
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int len=0;
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struct ast_frame *f = NULL;
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AST_LIST_LOCK(&imagers);
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AST_LIST_TRAVERSE(&imagers, i, list) {
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if (i->format & format) {
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char *stringp=NULL;
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strncpy(tmp, i->exts, sizeof(tmp)-1);
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stringp=tmp;
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e = strsep(&stringp, "|");
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while(e) {
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make_filename(buf, sizeof(buf), filename, preflang, e);
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if ((len = file_exists(buf))) {
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found = i;
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break;
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}
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make_filename(buf, sizeof(buf), filename, NULL, e);
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if ((len = file_exists(buf))) {
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found = i;
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break;
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}
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e = strsep(&stringp, "|");
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}
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}
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if (found)
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break;
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}
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if (found) {
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fd = open(buf, O_RDONLY);
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if (fd > -1) {
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if (!found->identify || found->identify(fd)) {
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/* Reset file pointer */
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lseek(fd, 0, SEEK_SET);
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f = found->read_image(fd,len);
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} else
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ast_log(LOG_WARNING, "%s does not appear to be a %s file\n", buf, found->name);
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close(fd);
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} else
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ast_log(LOG_WARNING, "Unable to open '%s': %s\n", buf, strerror(errno));
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} else
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ast_log(LOG_WARNING, "Image file '%s' not found\n", filename);
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AST_LIST_UNLOCK(&imagers);
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return f;
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}
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int ast_send_image(struct ast_channel *chan, char *filename)
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{
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struct ast_frame *f;
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int res = -1;
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if (chan->tech->send_image) {
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f = ast_read_image(filename, chan->language, -1);
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if (f) {
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res = chan->tech->send_image(chan, f);
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ast_frfree(f);
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}
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}
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return res;
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}
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static int show_image_formats(int fd, int argc, char *argv[])
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{
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#define FORMAT "%10s %10s %50s %10s\n"
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#define FORMAT2 "%10s %10s %50s %10s\n"
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struct ast_imager *i;
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if (argc != 3)
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return RESULT_SHOWUSAGE;
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ast_cli(fd, FORMAT, "Name", "Extensions", "Description", "Format");
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AST_LIST_TRAVERSE(&imagers, i, list)
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ast_cli(fd, FORMAT2, i->name, i->exts, i->desc, ast_getformatname(i->format));
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return RESULT_SUCCESS;
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}
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struct ast_cli_entry show_images =
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{
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{ "show", "image", "formats" },
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show_image_formats,
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"Displays image formats",
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"Usage: show image formats\n"
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" displays currently registered image formats (if any)\n"
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};
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int ast_image_init(void)
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{
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return ast_cli_register(&show_images);
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}
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