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Hopefully fixed distortion and pitch problems on Player versions

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1478 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing 2002-07-28 11:46:27 +00:00
parent 5c682fb0cd
commit fce2a28982
1 changed files with 36 additions and 2 deletions
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38
firmware/mpeg.c
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@ -1239,14 +1239,16 @@ int mpeg_val2phys(int setting, int value)
return result;
}
static unsigned long mas_version_code;
void mpeg_init(int volume, int bass, int treble, int loudness, int bass_boost, int avc)
{
#ifdef SIMULATOR
volume = bass = treble = loudness = bass_boost = avc;
#else
unsigned long val;
#ifdef ARCHOS_RECORDER
int rc;
unsigned long val;
#else
loudness = bass_boost = avc;
#endif
@ -1292,7 +1294,35 @@ void mpeg_init(int volume, int bass, int treble, int loudness, int bass_boost, i
#ifndef ARCHOS_RECORDER
mas_writereg(0x3b, 0x20); /* Don't ask why. The data sheet doesn't say */
mas_run(1);
sleep(HZ/10);
sleep(HZ);
mas_readmem(MAS_BANK_D1, 0xff7, &mas_version_code, 1);
/* Clear the upper 12 bits of the 32-bit samples */
mas_writereg(0xc5, 0);
mas_writereg(0xc6, 0);
/* We need to set the PLL for a 14.1318MHz crystal */
if(mas_version_code == 0x0601) /* Version F10? */
{
val = 0x5d9e8;
mas_writemem(MAS_BANK_D0, 0x32d, &val, 1);
val = 0xfffceb8d;
mas_writemem(MAS_BANK_D0, 0x32e, &val, 1);
val = 0x0;
mas_writemem(MAS_BANK_D0, 0x32f, &val, 1);
mas_run(0x475);
}
else
{
val = 0x5d9e8;
mas_writemem(MAS_BANK_D0, 0x36d, &val, 1);
val = 0xfffceb8d;
mas_writemem(MAS_BANK_D0, 0x36e, &val, 1);
val = 0x0;
mas_writemem(MAS_BANK_D0, 0x36f, &val, 1);
mas_run(0xfcb);
}
#endif
mp3buflen = mp3end - mp3buf;
@ -1307,6 +1337,10 @@ void mpeg_init(int volume, int bass, int treble, int loudness, int bass_boost, i
#ifndef ARCHOS_RECORDER
mas_writereg(MAS_REG_KPRESCALE, 0xe9400);
dac_config(0x04); /* DAC on, all else off */
val = 0x80000;
mas_writemem(MAS_BANK_D1, 0x7f8, &val, 1);
mas_writemem(MAS_BANK_D1, 0x7fb, &val, 1);
#endif
mpeg_sound_set(SOUND_BASS, bass);