res_convert.c

Go to the documentation of this file.

/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 2005, 2006, Digium, Inc.
 *
 * redice li <[email protected]>
 * Russell Bryant <[email protected]>
 *
 * 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 file format conversion CLI command using Asterisk formats and translators
 *
 * \author redice li <[email protected]>
 * \author Russell Bryant <[email protected]>
 *
 */

/*** MODULEINFO
 <support_level>core</support_level>
 ***/

#include "asterisk.h"

#include "asterisk/channel.h"
#include "asterisk/module.h"
#include "asterisk/cli.h"
#include "asterisk/file.h"

/*! \brief Split the filename to basename and extension */
static int split_ext(char *filename, char **name, char **ext)
{
 *name = *ext = filename;

 if ((*ext = strrchr(filename, '.'))) {
 **ext = '\0';
 (*ext)++;
 }

 if (ast_strlen_zero(*name) || ast_strlen_zero(*ext))
 return -1;

 return 0;
}

/*!
 * \brief Convert a file from one format to another
 * \param e CLI entry
 * \param cmd command number
 * \param a list of cli arguments
 * \retval CLI_SUCCESS on success.
 * \retval CLI_SHOWUSAGE or CLI_FAILURE on failure.
*/
static char *handle_cli_file_convert(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
 char *ret = CLI_FAILURE;
 struct ast_filestream *fs_in = NULL, *fs_out = NULL;
 struct ast_frame *f;
 struct timeval start;
 int cost;
 char *file_in = NULL, *file_out = NULL;
 char *name_in, *ext_in, *name_out, *ext_out;

 switch (cmd) {
 case CLI_INIT:
 e->command = "file convert";
 e->usage =
 "Usage: file convert <file_in> <file_out>\n"
 " Convert from file_in to file_out. If an absolute path\n"
 " is not given, the default Asterisk sounds directory\n"
 " will be used.\n\n"
 " Example:\n"
 " file convert tt-weasels.gsm tt-weasels.ulaw\n";
 return NULL;
 case CLI_GENERATE:
 return NULL;
 }

 if (a->argc != 4 || ast_strlen_zero(a->argv[2]) || ast_strlen_zero(a->argv[3])) {
 ret = CLI_SHOWUSAGE;
 goto fail_out;
 }

 file_in = ast_strdupa(a->argv[2]);
 file_out = ast_strdupa(a->argv[3]);

 if (split_ext(file_in, &name_in, &ext_in)) {
 ast_cli(a->fd, "'%s' is an invalid filename!\n", a->argv[2]);
 goto fail_out;
 }
 if (!(fs_in = ast_readfile(name_in, ext_in, NULL, O_RDONLY, 0, 0))) {
 ast_cli(a->fd, "Unable to open input file: %s\n", a->argv[2]);
 goto fail_out;
 }

 if (split_ext(file_out, &name_out, &ext_out)) {
 ast_cli(a->fd, "'%s' is an invalid filename!\n", a->argv[3]);
 goto fail_out;
 }
 if (!(fs_out = ast_writefile(name_out, ext_out, NULL, O_CREAT|O_TRUNC|O_WRONLY, 0, AST_FILE_MODE))) {
 ast_cli(a->fd, "Unable to open output file: %s\n", a->argv[3]);
 goto fail_out;
 }

 start = ast_tvnow();

 while ((f = ast_readframe(fs_in))) {
 if (ast_writestream(fs_out, f)) {
 ast_frfree(f);
 ast_cli(a->fd, "Failed to convert %s.%s to %s.%s!\n", name_in, ext_in, name_out, ext_out);
 goto fail_out;
 }
 ast_frfree(f);
 }

 cost = ast_tvdiff_ms(ast_tvnow(), start);
 ast_cli(a->fd, "Converted %s.%s to %s.%s in %dms\n", name_in, ext_in, name_out, ext_out, cost);
 ret = CLI_SUCCESS;

fail_out:
 if (fs_out) {
 ast_closestream(fs_out);
 if (ret != CLI_SUCCESS)
 ast_filedelete(name_out, ext_out);
 }

 if (fs_in)
 ast_closestream(fs_in);

 return ret;
}

static struct ast_cli_entry cli_convert[] = {
 AST_CLI_DEFINE(handle_cli_file_convert, "Convert audio file")
};

static int unload_module(void)
{
 ast_cli_unregister_multiple(cli_convert, ARRAY_LEN(cli_convert));
 return 0;
}

static int load_module(void)
{
 ast_cli_register_multiple(cli_convert, ARRAY_LEN(cli_convert));
 return AST_MODULE_LOAD_SUCCESS;
}

AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "File format conversion CLI command");