diff options
Diffstat (limited to 'fmdriver/ppz8.c')
| -rw-r--r-- | fmdriver/ppz8.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/fmdriver/ppz8.c b/fmdriver/ppz8.c index 4dea524..d1afd72 100644 --- a/fmdriver/ppz8.c +++ b/fmdriver/ppz8.c @@ -37,6 +37,7 @@ void ppz8_init(struct ppz8 *ppz8, uint16_t srate, uint16_t mix_volume) { channel->vol = 8; channel->pan = 5; channel->voice = 0; + leveldata_init(&channel->leveldata); } ppz8->srate = srate; ppz8->totalvol = 12; @@ -128,6 +129,7 @@ static int32_t ppz8_channel_calc(struct ppz8 *ppz8, struct ppz8_channel *channel } void ppz8_mix(struct ppz8 *ppz8, int16_t *buf, unsigned samples) { + unsigned level[8] = {0}; static const uint8_t pan_vol[10][2] = { {0, 0}, {4, 0}, @@ -144,11 +146,13 @@ void ppz8_mix(struct ppz8 *ppz8, int16_t *buf, unsigned samples) { int32_t lo = buf[i*2+0]; int32_t ro = buf[i*2+1]; for (int p = 0; p < 8; p++) { - //if (p < 3) continue; - //if (p >= 6) continue; struct ppz8_channel *channel = &ppz8->channel[p]; if (!channel->playing) continue; int32_t out = ppz8_channel_calc(ppz8, channel); + { + unsigned uout = out > 0 ? out : -out; + if (uout > level[p]) level[p] = uout; + } if ((1u << p) & (ppz8->mask)) continue; out *= ppz8->mix_volume; out >>= 15; @@ -162,6 +166,9 @@ void ppz8_mix(struct ppz8 *ppz8, int16_t *buf, unsigned samples) { buf[i*2+0] = lo; buf[i*2+1] = ro; } + for (int p = 0; p < 8; p++) { + leveldata_update(&ppz8->channel[p].leveldata, level[p]); + } } static int16_t calc_acc(int16_t acc, uint16_t adpcmd, uint8_t data) { |