![markster](/assets/img/avatar_default.png)
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@4446 f38db490-d61c-443f-a65b-d21fe96a405b
136 lines
2.5 KiB
C
Executable file
136 lines
2.5 KiB
C
Executable file
/*
|
|
* Asterisk -- A telephony toolkit for Linux.
|
|
*
|
|
* JPEG File format support.
|
|
*
|
|
* Copyright (C) 1999, Mark Spencer
|
|
*
|
|
* Mark Spencer <markster@linux-support.net>
|
|
*
|
|
* This program is free software, distributed under the terms of
|
|
* the GNU General Public License
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <asterisk/channel.h>
|
|
#include <asterisk/file.h>
|
|
#include <asterisk/logger.h>
|
|
#include <asterisk/sched.h>
|
|
#include <asterisk/module.h>
|
|
#include <asterisk/image.h>
|
|
#include <asterisk/lock.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <stdlib.h>
|
|
#include <sys/time.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#ifdef __linux__
|
|
#include <endian.h>
|
|
#else
|
|
#ifdef SOLARIS
|
|
#include "solaris-compat/compat.h"
|
|
#else
|
|
#include <machine/endian.h>
|
|
#endif
|
|
#endif
|
|
|
|
|
|
static char *desc = "JPEG (Joint Picture Experts Group) Image Format";
|
|
|
|
|
|
static struct ast_frame *jpeg_read_image(int fd, int len)
|
|
{
|
|
struct ast_frame fr;
|
|
int res;
|
|
char buf[65536];
|
|
if (len > sizeof(buf)) {
|
|
ast_log(LOG_WARNING, "JPEG image too large to read\n");
|
|
return NULL;
|
|
}
|
|
res = read(fd, buf, len);
|
|
if (res < len) {
|
|
ast_log(LOG_WARNING, "Only read %d of %d bytes: %s\n", res, len, strerror(errno));
|
|
}
|
|
memset(&fr, 0, sizeof(fr));
|
|
fr.frametype = AST_FRAME_IMAGE;
|
|
fr.subclass = AST_FORMAT_JPEG;
|
|
fr.data = buf;
|
|
fr.src = "JPEG Read";
|
|
fr.datalen = len;
|
|
return ast_frisolate(&fr);
|
|
}
|
|
|
|
static int jpeg_identify(int fd)
|
|
{
|
|
char buf[10];
|
|
int res;
|
|
res = read(fd, buf, sizeof(buf));
|
|
if (res < sizeof(buf))
|
|
return 0;
|
|
if (memcmp(buf + 6, "JFIF", 4))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
static int jpeg_write_image(int fd, struct ast_frame *fr)
|
|
{
|
|
int res=0;
|
|
if (fr->frametype != AST_FRAME_IMAGE) {
|
|
ast_log(LOG_WARNING, "Not an image\n");
|
|
return -1;
|
|
}
|
|
if (fr->subclass != AST_FORMAT_JPEG) {
|
|
ast_log(LOG_WARNING, "Not a jpeg image\n");
|
|
return -1;
|
|
}
|
|
if (fr->datalen) {
|
|
res = write(fd, fr->data, fr->datalen);
|
|
if (res != fr->datalen) {
|
|
ast_log(LOG_WARNING, "Only wrote %d of %d bytes: %s\n", res, fr->datalen, strerror(errno));
|
|
return -1;
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static struct ast_imager jpeg_format = {
|
|
"jpg",
|
|
"JPEG (Joint Picture Experts Group)",
|
|
"jpg|jpeg",
|
|
AST_FORMAT_JPEG,
|
|
jpeg_read_image,
|
|
jpeg_identify,
|
|
jpeg_write_image,
|
|
};
|
|
|
|
int load_module()
|
|
{
|
|
return ast_image_register(&jpeg_format);
|
|
}
|
|
|
|
int unload_module()
|
|
{
|
|
ast_image_unregister(&jpeg_format);
|
|
return 0;
|
|
}
|
|
|
|
int usecount()
|
|
{
|
|
/* We never really have any users */
|
|
return 0;
|
|
}
|
|
|
|
char *description()
|
|
{
|
|
return desc;
|
|
}
|
|
|
|
|
|
char *key()
|
|
{
|
|
return ASTERISK_GPL_KEY;
|
|
}
|