diff --git a/src/share/replaygain_synthesis/replaygain_synthesis.c b/src/share/replaygain_synthesis/replaygain_synthesis.c index d65b4124..b7fbfd3e 100644 --- a/src/share/replaygain_synthesis/replaygain_synthesis.c +++ b/src/share/replaygain_synthesis/replaygain_synthesis.c @@ -294,41 +294,6 @@ static FLAC__int64 dither_output_(DitherContext *d, FLAC__bool do_dithering, int size_t FLAC__replaygain_synthesis__apply_gain(FLAC__byte *data_out, FLAC__bool little_endian_data_out, FLAC__bool unsigned_data_out, const FLAC__int32 * const input[], unsigned wide_samples, unsigned channels, const unsigned source_bps, const unsigned target_bps, const double scale, const FLAC__bool hard_limit, FLAC__bool do_dithering, DitherContext *dither_context) { - static const FLAC__int32 conv_factors_[33] = { - -1, /* 0 bits-per-sample (not supported) */ - -1, /* 1 bits-per-sample (not supported) */ - -1, /* 2 bits-per-sample (not supported) */ - -1, /* 3 bits-per-sample (not supported) */ - 268435456, /* 4 bits-per-sample */ - 134217728, /* 5 bits-per-sample */ - 67108864, /* 6 bits-per-sample */ - 33554432, /* 7 bits-per-sample */ - 16777216, /* 8 bits-per-sample */ - 8388608, /* 9 bits-per-sample */ - 4194304, /* 10 bits-per-sample */ - 2097152, /* 11 bits-per-sample */ - 1048576, /* 12 bits-per-sample */ - 524288, /* 13 bits-per-sample */ - 262144, /* 14 bits-per-sample */ - 131072, /* 15 bits-per-sample */ - 65536, /* 16 bits-per-sample */ - 32768, /* 17 bits-per-sample */ - 16384, /* 18 bits-per-sample */ - 8192, /* 19 bits-per-sample */ - 4096, /* 20 bits-per-sample */ - 2048, /* 21 bits-per-sample */ - 1024, /* 22 bits-per-sample */ - 512, /* 23 bits-per-sample */ - 256, /* 24 bits-per-sample */ - 128, /* 25 bits-per-sample */ - 64, /* 26 bits-per-sample */ - 32, /* 27 bits-per-sample */ - 16, /* 28 bits-per-sample */ - 8, /* 29 bits-per-sample */ - 4, /* 30 bits-per-sample */ - 2, /* 31 bits-per-sample */ - 1 /* 32 bits-per-sample */ - }; static const FLAC__int64 hard_clip_factors_[33] = { 0, /* 0 bits-per-sample (not supported) */ 0, /* 1 bits-per-sample (not supported) */ @@ -364,7 +329,7 @@ size_t FLAC__replaygain_synthesis__apply_gain(FLAC__byte *data_out, FLAC__bool l -1073741824, /* 31 bits-per-sample */ (FLAC__int64)(-1073741824) * 2 /* 32 bits-per-sample */ }; - const FLAC__int32 conv_factor = conv_factors_[target_bps]; + const FLAC__int32 conv_shift = 32 - target_bps; const FLAC__int64 hard_clip_factor = hard_clip_factors_[target_bps]; /* * The integer input coming in has a varying range based on the @@ -409,7 +374,7 @@ size_t FLAC__replaygain_synthesis__apply_gain(FLAC__byte *data_out, FLAC__bool l } sample *= 2147483647.; - val64 = dither_output_(dither_context, do_dithering, noise_shaping, (i + last_history_index) % 32, sample, channel) / conv_factor; + val64 = dither_output_(dither_context, do_dithering, noise_shaping, (i + last_history_index) % 32, sample, channel) >> conv_shift; val32 = (FLAC__int32)val64; if(val64 >= -hard_clip_factor)