mirror of
https://github.com/servalproject/serval-dna.git
synced 2024-12-30 09:58:55 +00:00
97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
/*
|
|
* Asterisk -- An open source telephony toolkit.
|
|
*
|
|
* Copyright (C) 1999 - 2006, Digium, Inc.
|
|
*
|
|
* Mark Spencer <markster@digium.com>
|
|
*
|
|
* See http://www.asterisk.org for more information about
|
|
* the Asterisk project. Please do not directly contact
|
|
* any of the maintainers of this project for assistance;
|
|
* the project provides a web site, mailing lists and IRC
|
|
* channels for your use.
|
|
*
|
|
* This program is free software, distributed under the terms of
|
|
* the GNU General Public License Version 2. See the LICENSE file
|
|
* at the top of the source tree.
|
|
*/
|
|
|
|
/*! \file
|
|
* \brief General Asterisk channel definitions for image handling
|
|
*/
|
|
|
|
#ifndef _ASTERISK_IMAGE_H
|
|
#define _ASTERISK_IMAGE_H
|
|
|
|
/*! \brief structure associated with registering an image format */
|
|
struct ast_imager {
|
|
/*! Name */
|
|
char *name;
|
|
/*! Description */
|
|
char *desc;
|
|
/*! Extension(s) (separated by '|' ) */
|
|
char *exts;
|
|
/*! Image format */
|
|
int format;
|
|
/*! Read an image from a file descriptor */
|
|
struct ast_frame *(*read_image)(int fd, int len);
|
|
/*! Identify if this is that type of file */
|
|
int (*identify)(int fd);
|
|
/*! Returns length written */
|
|
int (*write_image)(int fd, struct ast_frame *frame);
|
|
/*! For linked list */
|
|
AST_LIST_ENTRY(ast_imager) list;
|
|
};
|
|
|
|
/*! Check for image support on a channel */
|
|
/*!
|
|
* \param chan channel to check
|
|
* Checks the channel to see if it supports the transmission of images
|
|
* Returns non-zero if image transmission is supported
|
|
*/
|
|
int ast_supports_images(struct ast_channel *chan);
|
|
|
|
/*! Sends an image */
|
|
/*!
|
|
* \param chan channel to send image on
|
|
* \param filename filename of image to send (minus extension)
|
|
* Sends an image on the given channel.
|
|
* Returns 0 on success, -1 on error
|
|
*/
|
|
int ast_send_image(struct ast_channel *chan, char *filename);
|
|
|
|
/*! Make an image */
|
|
/*!
|
|
* \param filename filename of image to prepare
|
|
* \param preflang preferred language to get the image...?
|
|
* \param format the format of the file
|
|
* Make an image from a filename ??? No estoy positivo
|
|
* Returns an ast_frame on success, NULL on failure
|
|
*/
|
|
struct ast_frame *ast_read_image(char *filename, const char *preflang, int format);
|
|
|
|
/*! Register image format */
|
|
/*!
|
|
* \param imgdrv Populated ast_imager structure with info to register
|
|
* Registers an image format
|
|
* Returns 0 regardless
|
|
*/
|
|
int ast_image_register(struct ast_imager *imgdrv);
|
|
|
|
/*! Unregister an image format */
|
|
/*!
|
|
* \param imgdrv pointer to the ast_imager structure you wish to unregister
|
|
* Unregisters the image format passed in
|
|
* Returns nothing
|
|
*/
|
|
void ast_image_unregister(struct ast_imager *imgdrv);
|
|
|
|
/*! Initialize image stuff */
|
|
/*!
|
|
* Initializes all the various image stuff. Basically just registers the cli stuff
|
|
* Returns 0 all the time
|
|
*/
|
|
int ast_image_init(void);
|
|
|
|
#endif /* _ASTERISK_IMAGE_H */
|