Version 0.1.9 from FTP
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@326 f38db490-d61c-443f-a65b-d21fe96a405b
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/* k6opt.s vector functions optimized for MMX extensions to x86
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*
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* Copyright (C) 1999 by Stanley J. Brooks <stabro@megsinet.net>
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*
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* Any use of this software is permitted provided that this notice is not
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* removed and that neither the authors nor the Technische Universitaet Berlin
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* are deemed to have made any representations as to the suitability of this
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* software for any purpose nor are held responsible for any defects of
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* this software. THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE;
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* not even the implied warranty of MERCHANTABILITY or FITNESS FOR
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* A PARTICULAR PURPOSE.
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*
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* Chicago, 03.12.1999
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* Stanley J. Brooks
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*/
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.file "k6opt.s"
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.version "01.01"
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/* gcc2_compiled.: */
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/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* JPEG File format support.
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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 <asterisk/channel.h>
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#include <asterisk/file.h>
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#include <asterisk/logger.h>
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#include <asterisk/sched.h>
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#include <asterisk/module.h>
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#include <asterisk/image.h>
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#include <arpa/inet.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <pthread.h>
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#include <endian.h>
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static char *desc = "JPEG (Joint Picture Experts Group) Image Format";
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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)) {
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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 = AST_FORMAT_JPEG;
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fr.data = 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->frametype != AST_FRAME_IMAGE) {
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ast_log(LOG_WARNING, "Not an image\n");
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return -1;
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}
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if (fr->subclass != AST_FORMAT_JPEG) {
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ast_log(LOG_WARNING, "Not a jpeg image\n");
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return -1;
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}
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if (fr->datalen) {
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res = write(fd, fr->data, 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);
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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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"jpg",
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"JPEG (Joint Picture Experts Group)",
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"jpg|jpeg",
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AST_FORMAT_JPEG,
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jpeg_read_image,
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jpeg_identify,
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jpeg_write_image,
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};
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int load_module()
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{
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return ast_image_register(&jpeg_format);
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}
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int unload_module()
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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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int usecount()
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{
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/* We never really have any users */
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return 0;
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}
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char *description()
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{
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return desc;
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}
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char *key()
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{
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return ASTERISK_GPL_KEY;
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}
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/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* General Asterisk channel definitions.
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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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#ifndef _ASTERISK_IMAGE_H
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#define _ASTERISK_IMAGE_H
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struct ast_imager {
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char *name; /* Name */
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char *desc; /* Description */
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char *exts; /* Extension(s) (separated by '|' ) */
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int format; /* Image format */
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struct ast_frame *(*read_image)(int fd, int len); /* Read an image from a file descriptor */
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int (*identify)(int fd); /* Identify if this is that type of file */
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int (*write_image)(int fd, struct ast_frame *frame); /* Returns length written */
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struct ast_imager *next;
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};
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/* Returns non-zero if image transmission is supported */
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extern int ast_supports_images(struct ast_channel *chan);
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/* Sends an image */
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extern int ast_send_image(struct ast_channel *chan, char *filename);
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/* Make an image from a filename */
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extern struct ast_frame *ast_read_image(char *filename, char *preflang, int format);
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/* Register an image format */
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extern int ast_image_register(struct ast_imager *imgdrv);
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extern void ast_image_unregister(struct ast_imager *imgdrv);
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/* Initialize image stuff */
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extern int ast_image_init(void);
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#endif
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