diff options
Diffstat (limited to 'firmware/sound.c')
| -rw-r--r-- | firmware/sound.c | 32 |
1 files changed, 23 insertions, 9 deletions
diff --git a/firmware/sound.c b/firmware/sound.c index ab0ab1ed46..0fb54861c9 100644 --- a/firmware/sound.c +++ b/firmware/sound.c @@ -602,27 +602,41 @@ int sound_val2phys(int setting, int value) The pitch value is in tenths of percent. */ +static int last_pitch = 1000; + void sound_set_pitch(int pitch) { unsigned long val; - /* invert pitch value */ - pitch = 1000000/pitch; - - /* Calculate the new (bogus) frequency */ - val = 18432*pitch/1000; + if (pitch != last_pitch) + { + /* Calculate the new (bogus) frequency */ + val = 18432 * 1000 / pitch; - mas_writemem(MAS_BANK_D0, MAS_D0_OFREQ_CONTROL, &val, 1); + mas_writemem(MAS_BANK_D0, MAS_D0_OFREQ_CONTROL, &val, 1); - /* We must tell the MAS that the frequency has changed. - This will unfortunately cause a short silence. */ - mas_writemem(MAS_BANK_D0, MAS_D0_IO_CONTROL_MAIN, &shadow_io_control_main, 1); + /* We must tell the MAS that the frequency has changed. + * This will unfortunately cause a short silence. */ + mas_writemem(MAS_BANK_D0, MAS_D0_IO_CONTROL_MAIN, &shadow_io_control_main, 1); + + last_pitch = pitch; + } +} + +int sound_get_pitch(void) +{ + return last_pitch; } #elif defined SIMULATOR void sound_set_pitch(int pitch) { (void)pitch; } + +int sound_get_pitch(void) +{ + return 1000; +} #endif #if CONFIG_HWCODEC == MASNONE |