Fix a 3 dB offset in audio conversion.

diff --git a/mixer.cpp b/mixer.cpp
index 52a8d84f2c5e340821d3610377803164e9f3911f..c7387e76064a797a867cf2169d757c828b0bed25 100644 (file)
--- a/mixer.cpp
+++ b/mixer.cpp
@@ -62,7 +62,7 @@ void convert_fixed24_to_fp32(float *dst, size_t out_channels, const uint8_t *src
                        uint32_t s2 = *src++;
                        uint32_t s3 = *src++;
                        uint32_t s = s1 | (s1 << 8) | (s2 << 16) | (s3 << 24);
-                       dst[i * out_channels + j] = int(s) * (1.0f / 4294967296.0f);
+                       dst[i * out_channels + j] = int(s) * (1.0f / 2147483648.0f);
                }
                src += 3 * (in_channels - out_channels);
        }
@@ -75,7 +75,7 @@ void convert_fixed32_to_fp32(float *dst, size_t out_channels, const uint8_t *src
                for (size_t j = 0; j < out_channels; ++j) {
                        // Note: Assumes little-endian.
                        int32_t s = *(int32_t *)src;
-                       dst[i * out_channels + j] = s * (1.0f / 4294967296.0f);
+                       dst[i * out_channels + j] = s * (1.0f / 2147483648.0f);
                        src += 4;
                }
                src += 4 * (in_channels - out_channels);