fix audio in jsrf and some other games

2026-07-06 00:20:22 -07:00 · 2026-03-02 12:06:59 -05:00
parent 3c6138faae
commit 0277b66f74
1 changed files with 16 additions and 0 deletions
@@ -1030,6 +1030,22 @@ static int voice_get_samples(MCPXAPUState *d, uint32_t v, float samples[][2],
                        linear_addr += 4;
                    }
                }
+                /* WAR: Deactivate voice if ADPCM header values are non-zero
+                 * and identical. Something overwrites voice memory region
+                 * before NV1BA0_PIO_VOICE_OFF is set. Mitigates loud
+                 * crackling produced by decoding/playing such data.
+                 */
+                uint8_t *adpcm_hdr = (uint8_t *)adpcm_block;
+                if (adpcm_hdr[0] != 0) {
+                    uint32_t diff = 0;
+                    for (uint8_t i = 1; i < 8; i++) {
+                        diff |= adpcm_hdr[i] ^ adpcm_hdr[0];
+                    }
+                    if (diff == 0) {
+                        voice_off(d, v);
+                        return -1;
+                    }
+                }
                adpcm_decode_block(adpcm_decoded, (uint8_t *)adpcm_block,
                                   block_size, channels);
                adpcm_block_index = block_index;