rockbox/firmware/export/ipod_remote_tuner.h
Michael Sevakis fc9695eb47 Improve radio RDS driver and framework
* Remove unused bits like the radio event and simplify basic
radio interface. It can be more self-contained with rds.h only
required by radio and tuner code.

* Add post-processing to text a-la Silicon Labs AN243. The chip's
error correction can only do so much; additional checks are highly
recommended. Simply testing for two identical messages in a row
is extremely effective and I've never seen corrupted text since
doing that, even with mediocre reception.

Groups segments must arrive in order, not randomly; logic change
only accepts them in order, starting at 0.

Time readout was made a bit better but really we'd need to use
verbose mode and ensure that no errors were seen during receiving
of time and more checks would be need to have a stable PI. The
text is the important bit anyway.

* Time out of stale text.

* Text is no longer updated until a complete group has been
received, as is specified in the standard. Perhaps go back to
scrolling text lines in the radio screen?

* Add proper character conversion to UTF-8. Only the default G0
table for the moment. The other two could be added in.

* Add variants "RDS_CFG_PROCESS" and "RDS_CFG_PUSH" to allow
the option for processed RDS data to be pushed to the driver and
still do proper post-processing (only text conversion for now for
the latter).

Change-Id: I4d83f8b2e89a209a5096d15ec266477318c66925
2017-02-11 22:19:32 -05:00

42 lines
1.5 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id: ipod_remote_tuner.h
* Tuner header for the ipod remote tuner and others remote tuners
*
* Copyright (C) 2009 Laurent Gautier
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef _IPOD_REMOTE_TUNER_H_
#define _IPOD_REMOTE_TUNER_H_
#define HAVE_RADIO_REGION
#define TIMEOUT_VALUE 20
extern int radio_present;
extern void rmt_tuner_freq(unsigned int len, const unsigned char *buf);
extern void rmt_tuner_rds_data(unsigned int len, const unsigned char *buf);
int ipod_rmt_tuner_set(int setting, int value);
int ipod_rmt_tuner_get(int setting);
#ifndef CONFIG_TUNER_MULTI
#define tuner_set ipod_rmt_tuner_set
#define tuner_get ipod_rmt_tuner_get
#endif
#endif /* _IPOD_REMOTE_TUNER_H_ */