res/res_convert.c

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (C) 2005, 2006, Digium, Inc.
   5  *
   6  * redice li <redice_li@yahoo.com>
   7  * Russell Bryant <russell@digium.com>
   8  *
   9  * See http://www.asterisk.org for more information about
  10  * the Asterisk project. Please do not directly contact
  11  * any of the maintainers of this project for assistance;
  12  * the project provides a web site, mailing lists and IRC
  13  * channels for your use.
  14  *
  15  * This program is free software, distributed under the terms of
  16  * the GNU General Public License Version 2. See the LICENSE file
  17  * at the top of the source tree.
  18  */
  19
  20 /*! \file
  21  *
  22  * \brief file format conversion CLI command using Asterisk formats and translators
  23  *
  24  * \author redice li <redice_li@yahoo.com>
  25  * \author Russell Bryant <russell@digium.com>
  26  *
  27  */
  28
  29 #include "asterisk.h"
  30
  31 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  32
  33 #include "asterisk/channel.h"
  34 #include "asterisk/module.h"
  35 #include "asterisk/cli.h"
  36 #include "asterisk/file.h"
  37
  38 /*! \brief Split the filename to basename and extension */
  39 static int split_ext(char *filename, char **name, char **ext)
  40 {
  41         *name = *ext = filename;
  42
  43         if ((*ext = strrchr(filename, '.'))) {
  44                 **ext = '\0';
  45                 (*ext)++;
  46         }
  47
  48         if (ast_strlen_zero(*name) || ast_strlen_zero(*ext))
  49                 return -1;
  50
  51         return 0;
  52 }
  53
  54 /*!
  55  * \brief Convert a file from one format to another
  56  * \param e CLI entry
  57  * \param cmd command number
  58  * \param a list of cli arguments
  59  * \retval CLI_SUCCESS on success.
  60  * \retval CLI_SHOWUSAGE or CLI_FAILURE on failure.
  61 */
  62 static char *handle_cli_file_convert(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
  63 {
  64         char *ret = CLI_FAILURE;
  65         struct ast_filestream *fs_in = NULL, *fs_out = NULL;
  66         struct ast_frame *f;
  67         struct timeval start;
  68         int cost;
  69         char *file_in = NULL, *file_out = NULL;
  70         char *name_in, *ext_in, *name_out, *ext_out;
  71
  72         switch (cmd) {
  73         case CLI_INIT:
  74                 e->command = "file convert";
  75                 e->usage =
  76                         "Usage: file convert <file_in> <file_out>\n"
  77                         "       Convert from file_in to file_out. If an absolute path\n"
  78                         "       is not given, the default Asterisk sounds directory\n"
  79                         "       will be used.\n\n"
  80                         "       Example:\n"
  81                         "           file convert tt-weasels.gsm tt-weasels.ulaw\n";
  82                 return NULL;
  83         case CLI_GENERATE:
  84                 return NULL;
  85         }
  86
  87         /* ugly, can be removed when CLI entries have ast_module pointers */
  88         ast_module_ref(ast_module_info->self);
  89
  90         if (a->argc != 4 || ast_strlen_zero(a->argv[2]) || ast_strlen_zero(a->argv[3])) {
  91                 ret = CLI_SHOWUSAGE;
  92                 goto fail_out;
  93         }
  94
  95         file_in = ast_strdupa(a->argv[2]);
  96         file_out = ast_strdupa(a->argv[3]);
  97
  98         if (split_ext(file_in, &name_in, &ext_in)) {
  99                 ast_cli(a->fd, "'%s' is an invalid filename!\n", a->argv[2]);
 100                 goto fail_out;
 101         }
 102         if (!(fs_in = ast_readfile(name_in, ext_in, NULL, O_RDONLY, 0, 0))) {
 103                 ast_cli(a->fd, "Unable to open input file: %s\n", a->argv[2]);
 104                 goto fail_out;
 105         }
 106
 107         if (split_ext(file_out, &name_out, &ext_out)) {
 108                 ast_cli(a->fd, "'%s' is an invalid filename!\n", a->argv[3]);
 109                 goto fail_out;
 110         }
 111         if (!(fs_out = ast_writefile(name_out, ext_out, NULL, O_CREAT|O_TRUNC|O_WRONLY, 0, AST_FILE_MODE))) {
 112                 ast_cli(a->fd, "Unable to open output file: %s\n", a->argv[3]);
 113                 goto fail_out;
 114         }
 115
 116         start = ast_tvnow();
 117
 118         while ((f = ast_readframe(fs_in))) {
 119                 if (ast_writestream(fs_out, f)) {
 120                         ast_cli(a->fd, "Failed to convert %s.%s to %s.%s!\n", name_in, ext_in, name_out, ext_out);
 121                         goto fail_out;
 122                 }
 123         }
 124
 125         cost = ast_tvdiff_ms(ast_tvnow(), start);
 126         ast_cli(a->fd, "Converted %s.%s to %s.%s in %dms\n", name_in, ext_in, name_out, ext_out, cost);
 127         ret = CLI_SUCCESS;
 128
 129 fail_out:
 130         if (fs_out) {
 131                 ast_closestream(fs_out);
 132                 if (ret != CLI_SUCCESS)
 133                         ast_filedelete(name_out, ext_out);
 134         }
 135
 136         if (fs_in)
 137                 ast_closestream(fs_in);
 138
 139         ast_module_unref(ast_module_info->self);
 140
 141         return ret;
 142 }
 143
 144 static struct ast_cli_entry cli_convert[] = {
 145         AST_CLI_DEFINE(handle_cli_file_convert, "Convert audio file")
 146 };
 147
 148 static int unload_module(void)
 149 {
 150         ast_cli_unregister_multiple(cli_convert, sizeof(cli_convert) / sizeof(struct ast_cli_entry));
 151         return 0;
 152 }
 153
 154 static int load_module(void)
 155 {
 156         ast_cli_register_multiple(cli_convert, sizeof(cli_convert) / sizeof(struct ast_cli_entry));
 157         return AST_MODULE_LOAD_SUCCESS;
 158 }
 159
 160 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "File format conversion CLI command");