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Change sound volume to level (#986)

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Maciej Mroziński 2020-09-09 08:53:33 +02:00 committed by GitHub
parent f0821f8d6c
commit b26cf289c3
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 20 additions and 3 deletions
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23
libs/music/music.cpp
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@ -45,7 +45,7 @@ void setVolume(int volume) {
struct ToneCmd {
uint8_t cmd;
uint8_t vol;
uint8_t lvl;
uint16_t freq;
uint16_t duration;
};
@ -55,10 +55,26 @@ static void _stopSound() {
writeDev(&cmd, sizeof(cmd));
}
static uint8_t _getVolumeLevel(uint8_t volume, uint8_t levels) {
uint8_t level;
uint8_t step = (uint8_t) (100 / (levels - 1));
if (volume < step) {
level = 0;
} else if (volume > step * (levels - 1)) {
level = levels;
} else {
level = (uint8_t) (volume / step);
}
return level;
}
static void _playTone(uint16_t frequency, uint16_t duration, uint8_t volume) {
// https://github.com/mindboards/ev3sources/blob/78ebaf5b6f8fe31cc17aa5dce0f8e4916a4fc072/lms2012/c_sound/source/c_sound.c#L471
uint8_t level = _getVolumeLevel(volume, 13);
ToneCmd cmd;
cmd.cmd = SOUND_CMD_TONE;
cmd.vol = volume;
cmd.lvl = level;
cmd.freq = frequency;
cmd.duration = duration;
// (*SoundInstance.pSound).Busy = TRUE;
@ -122,7 +138,8 @@ void playSample(Buffer buf) {
stopUser();
pthread_mutex_lock(&pumpMutex);
*lmsSoundMMap = 1; // BUSY
uint8_t cmd[] = {SOUND_CMD_PLAY, (uint8_t)((currVolume / 33) + 1)};
// https://github.com/mindboards/ev3sources/blob/78ebaf5b6f8fe31cc17aa5dce0f8e4916a4fc072/lms2012/c_sound/source/c_sound.c#L605
uint8_t cmd[] = {SOUND_CMD_PLAY, _getVolumeLevel(currVolume, 8)};
writeDev(cmd, 2);
decrRC(currentSample);
currentSample = buf;