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Version 0.1.9 from FTP
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@328 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
201
image.c
Executable file
201
image.c
Executable file
@@ -0,0 +1,201 @@
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/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* Channel Management
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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 <stdio.h>
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#include <stdlib.h>
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#include <pthread.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/channel_pvt.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.h"
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static struct ast_imager *list;
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static pthread_mutex_t listlock = PTHREAD_MUTEX_INITIALIZER;
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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_pthread_mutex_lock(&listlock);
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img->next = list;
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list = img;
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ast_pthread_mutex_unlock(&listlock);
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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, *prev = NULL;
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ast_pthread_mutex_lock(&listlock);
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i = list;
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while(i) {
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if (i == img) {
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if (prev)
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prev->next = i->next;
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else
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list = i->next;
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break;
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}
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prev = i;
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i = i->next;
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}
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ast_pthread_mutex_unlock(&listlock);
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if (i && (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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}
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int ast_supports_images(struct ast_channel *chan)
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{
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if (!chan->pvt->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, char *preflang, char *ext)
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{
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if (filename[0] == '/') {
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if (preflang && strlen(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 (preflang && strlen(preflang))
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snprintf(buf, len, "%s/%s-%s.%s", AST_IMAGES, filename, preflang, ext);
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else
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snprintf(buf, len, "%s/%s.%s", AST_IMAGES, filename, ext);
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}
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}
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struct ast_frame *ast_read_image(char *filename, 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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#if 0 /* We need to have some sort of read-only lock */
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ast_pthread_mutex_lock(&listlock);
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#endif
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i = list;
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while(!found && i) {
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if (i->format & format) {
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strncpy(tmp, i->exts, sizeof(tmp));
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e = strtok(tmp, "|");
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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 = strtok(NULL, "|");
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}
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}
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i = i->next;
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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, i->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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#if 0
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ast_pthread_mutex_unlock(&listlock);
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#endif
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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->pvt->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->pvt->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 %10d\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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i = list;
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while(i) {
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ast_cli(fd, FORMAT2, i->name, i->exts, i->desc, i->format);
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i = i->next;
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};
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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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ast_cli_register(&show_images);
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return 0;
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}
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