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Fix music frequency conversion bug

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This commit is contained in:
NishiOwO
2025-03-24 20:35:41 +09:00
parent c135dddfa9
commit 16a6ab3f95
1 changed files with 8 additions and 7 deletions
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15
src/sound/audio4.c
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@@ -96,6 +96,7 @@ void givealbuffer_common(const void *buf, const uint8_t src, const int size){
int conv_size;
int i;
double gain;
int target_rate;
if(audio[src] == -1) return;
gain = sound_muted ? 0.0 : pow(10.0, (double) sound_gain / 20.0);
@@ -114,18 +115,18 @@ void givealbuffer_common(const void *buf, const uint8_t src, const int size){
}
#ifdef USE_NEW_API
output_size = (double)conv_size * info[src].rate / freq;
target_rate = info[src].rate;
#else
output_size = (double)conv_size * info[src].play.sample_rate / freq;
target_rate = info[src].play.sample_rate;
#endif
output_size = (double)conv_size * target_rate / freq;
output_size -= output_size % 2;
output = malloc(output_size);
for(i = 0; i < output_size / sizeof(int16_t) / 2; i++){
#ifdef USE_NEW_API
int ind = i * freq / info[src].rate * 2;
#else
int ind = i * freq / info[src].play.sample_rate * 2;
#endif
int ind = i * freq / target_rate * 2;
ind -= ind % 2;
output[i * 2 + 0] = conv[ind + 0] * gain;
output[i * 2 + 1] = conv[ind + 1] * gain;
}