diff options
Diffstat (limited to 'src/inputPlugins/mp3_plugin.c')
| -rw-r--r-- | src/inputPlugins/mp3_plugin.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/src/inputPlugins/mp3_plugin.c b/src/inputPlugins/mp3_plugin.c index 2990de1ac..1bfc707a5 100644 --- a/src/inputPlugins/mp3_plugin.c +++ b/src/inputPlugins/mp3_plugin.c @@ -65,13 +65,14 @@ static unsigned long prng(unsigned long state) return (state * 0x0019660dL + 0x3c6ef35fL) & 0xffffffffL; } -static int16_t audio_linear_dither(unsigned int bits, mad_fixed_t sample, - struct audio_dither *dither) +static int16_t audio_linear_dither(mad_fixed_t sample, + struct audio_dither *dither) { - unsigned int scalebits; mad_fixed_t output, mask, rnd; enum { + bits = 16, + scalebits = MAD_F_FRACBITS + 1 - bits, MIN = -MAD_F_ONE, MAX = MAD_F_ONE - 1 }; @@ -83,7 +84,6 @@ static int16_t audio_linear_dither(unsigned int bits, mad_fixed_t sample, output = sample + (1L << (MAD_F_FRACBITS + 1 - bits - 1)); - scalebits = MAD_F_FRACBITS + 1 - bits; mask = (1L << scalebits) - 1; rnd = prng(dither->random); @@ -119,13 +119,11 @@ static unsigned dither_buffer(int16_t *dest0, const struct mad_synth *synth, unsigned int i; for (i = start; i < end; ++i) { - *dest++ = audio_linear_dither(16, - synth->pcm.samples[0][i], + *dest++ = audio_linear_dither(synth->pcm.samples[0][i], dither); if (num_channels == 2) - *dest++ = audio_linear_dither(16, - synth->pcm.samples[1][i], + *dest++ = audio_linear_dither(synth->pcm.samples[1][i], dither); } |