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/*
This file is part of GNUnet.
Copyright (C) 2013 GNUnet e.V.
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Affero General Public License for more details.
*/
/**
* @file conversation/gnunet-conversation-test.c
* @brief tool to test speaker and microphone (for end users!)
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_speaker_lib.h"
#include "gnunet_microphone_lib.h"
/**
* How long do we record before we replay?
*/
#define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5)
/**
* A recording we made.
*/
struct Recording
{
/**
* Kept in a DLL.
*/
struct Recording *next;
/**
* Kept in a DLL.
*/
struct Recording *prev;
/**
* Number of bytes that follow.
*/
size_t size;
};
/**
* Final status code.
*/
static int ret;
/**
* Handle to the microphone.
*/
static struct GNUNET_MICROPHONE_Handle *microphone;
/**
* Handle to the speaker.
*/
static struct GNUNET_SPEAKER_Handle *speaker;
/**
* Task scheduled to switch from recording to playback.
*/
static struct GNUNET_SCHEDULER_Task * switch_task;
/**
* The shutdown task.
*/
static struct GNUNET_SCHEDULER_Task * st;
/**
* Head of DLL with recorded frames.
*/
static struct Recording *rec_head;
/**
* Tail of DLL with recorded frames.
*/
static struct Recording *rec_tail;
/**
* Terminate test.
*
* @param cls NULL
*/
static void
do_shutdown (void *cls)
{
struct Recording *rec;
(void) cls;
if (NULL != switch_task)
GNUNET_SCHEDULER_cancel (switch_task);
if (NULL != microphone)
GNUNET_MICROPHONE_destroy (microphone);
if (NULL != speaker)
GNUNET_SPEAKER_destroy (speaker);
while (NULL != (rec = rec_head))
{
GNUNET_CONTAINER_DLL_remove (rec_head,
rec_tail,
rec);
GNUNET_free (rec);
}
fprintf (stderr,
_("\nEnd of transmission. Have a GNU day.\n"));
}
/**
* Terminate recording process and switch to playback.
*
* @param cls NULL
*/
static void
switch_to_speaker (void *cls)
{
(void) cls;
switch_task = NULL;
microphone->disable_microphone (microphone->cls);
if (GNUNET_OK !=
speaker->enable_speaker (speaker->cls))
{
fprintf (stderr,
"Failed to enable microphone\n");
ret = 1;
GNUNET_SCHEDULER_shutdown ();
return;
}
fprintf (stderr,
_("\nWe are now playing your recording back. If you can hear it, your audio settings are working..."));
for (struct Recording *rec=rec_head; NULL != rec; rec = rec->next)
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Replaying %u bytes\n",
(unsigned int) rec->size);
speaker->play (speaker->cls,
rec->size,
&rec[1]);
}
GNUNET_SCHEDULER_cancel (st);
st = GNUNET_SCHEDULER_add_delayed (TIMEOUT,
&do_shutdown,
NULL);
}
/**
* Process recorded audio data.
*
* @param cls clsoure
* @param data_size number of bytes in @a data
* @param data audio data to play
*/
static void
record (void *cls,
size_t data_size,
const void *data)
{
struct Recording *rec;
(void) cls;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Recorded %u bytes\n",
(unsigned int) data_size);
rec = GNUNET_malloc (sizeof (struct Recording) + data_size);
rec->size = data_size;
GNUNET_memcpy (&rec[1], data, data_size);
GNUNET_CONTAINER_DLL_insert_tail (rec_head,
rec_tail,
rec);
}
/**
* Main function that will be run by the scheduler.
*
* @param cls closure
* @param args remaining command-line arguments
* @param cfgfile name of the configuration file used (for saving, can be NULL!)
* @param cfg configuration
*/
static void
run (void *cls,
char *const *args,
const char *cfgfile,
const struct GNUNET_CONFIGURATION_Handle *cfg)
{
(void) cls;
(void) args;
(void) cfgfile;
microphone = GNUNET_MICROPHONE_create_from_hardware (cfg);
GNUNET_assert (NULL != microphone);
speaker = GNUNET_SPEAKER_create_from_hardware (cfg);
GNUNET_assert (NULL != speaker);
switch_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT,
&switch_to_speaker,
NULL);
st = GNUNET_SCHEDULER_add_shutdown (&do_shutdown,
NULL);
fprintf (stderr,
_("We will now be recording you for %s. After that time, the recording will be played back to you..."),
GNUNET_STRINGS_relative_time_to_string (TIMEOUT, GNUNET_YES));
if (GNUNET_OK !=
microphone->enable_microphone (microphone->cls,
&record, NULL))
{
fprintf (stderr,
"Failed to enable microphone\n");
ret = 1;
GNUNET_SCHEDULER_shutdown ();
return;
}
}
/**
* The main function of our code to test microphone and speaker.
*
* @param argc number of arguments from the command line
* @param argv command line arguments
* @return 0 ok, 1 on error
*/
int
main (int argc,
char *const *argv)
{
static const struct GNUNET_GETOPT_CommandLineOption options[] = {
GNUNET_GETOPT_OPTION_END
};
if (GNUNET_OK !=
GNUNET_STRINGS_get_utf8_args (argc, argv,
&argc, &argv))
return 2;
ret = (GNUNET_OK ==
GNUNET_PROGRAM_run (argc, argv,
"gnunet-conversation-test",
gettext_noop ("help text"),
options,
&run,
NULL)) ? ret : 1;
GNUNET_free ((void*) argv);
return ret;
}
/* end of gnunet-conversation-test.c */
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