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Avoid radio interference from the MAS internal clock on devices with the Samsung tuner (FM recorder, old Ondio FM) by slightly shifting it away when necessary.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6531 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2005-05-28 01:09:19 +00:00
parent 8ca1831a5e
commit 7a977b833f
3 changed files with 44 additions and 0 deletions
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16
firmware/mpeg.c
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@ -2382,6 +2382,22 @@ void mpeg_set_recording_gain(int left, int right, bool use_mic)
mas_codec_writereg(0x0, shadow_codec_reg0);
}
#if CONFIG_TUNER & S1A0903X01
/* Get the (unpitched) MAS PLL frequency, for avoiding FM interference with the
* Samsung tuner. Zero means unknown. Currently handles recording from analog
* input only. */
int mpeg_get_mas_pllfreq(void)
{
if (mpeg_mode != MPEG_ENCODER)
return 0;
if (rec_frequency_index == 0) /* 44.1 kHz / 22.05 kHz */
return 22579000;
else
return 24576000;
}
#endif
/* try to make some kind of beep, also in recording mode */
void audio_beep(int duration)
{