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Merge remote-tracking branch 'Eknous-P/4bitpcm' (#2550)

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tildearrow 2025-07-25 14:39:05 -05:00
commit 13ac388ae5
7 changed files with 76 additions and 16 deletions
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15
src/engine/fileOps/pps.cpp
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@ -92,23 +92,14 @@ void DivEngine::loadPPS(SafeReader& reader, std::vector<DivSample*>& ret, String
s->rate = PPS_SAMPLE_RATE;
s->centerRate = PPS_SAMPLE_RATE;
s->depth = DIV_SAMPLE_DEPTH_8BIT;
s->init(headers[i].sample_length * 2); //byte per sample
s->depth = DIV_SAMPLE_DEPTH_4BIT;
s->init(headers[i].sample_length*2); // bytes->samples
reader.seek((int)headers[i].start_pointer, SEEK_SET);
int sample_pos = 0;
for(int j = 0; j < headers[i].sample_length; j++)
{
unsigned char curr_byte = (unsigned char)reader.readC();
s->data8[sample_pos] = (curr_byte >> 4) | (curr_byte & 0xf0);
s->data8[sample_pos] += 0x80;
sample_pos++;
s->data8[sample_pos] = (curr_byte << 4) | (curr_byte & 0xf);
s->data8[sample_pos] += 0x80;
sample_pos++;
s->data4[j] = reader.readC();
}
ret.push_back(s);