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| author | Max Kellermann <max@duempel.org> | 2008-08-26 08:27:12 +0200 |
|---|---|---|
| committer | Eric Wong <normalperson@yhbt.net> | 2008-08-30 19:30:38 -0700 |
| commit | 33b39572ddff251333d92e174d304adb6b2d3b83 (patch) | |
| tree | 5ab65b3178217115ee2685a77cd03e1602b3067d | |
| parent | fdad7dc9df25ba74d8a4c4d9fab7a25e3e0ef3ca (diff) | |
| download | mpd-33b39572ddff251333d92e174d304adb6b2d3b83.tar.gz mpd-33b39572ddff251333d92e174d304adb6b2d3b83.tar.xz mpd-33b39572ddff251333d92e174d304adb6b2d3b83.zip | |
mp3: dither a whole block at a time
Fill the whole output buffer at a time by using dither_buffer()'s
ability to decode blocks. Calculate how many samples fit into the
output buffer before each invocation.
| -rw-r--r-- | src/inputPlugins/mp3_plugin.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/inputPlugins/mp3_plugin.c b/src/inputPlugins/mp3_plugin.c index 9c4925dfa..2bdff4bd4 100644 --- a/src/inputPlugins/mp3_plugin.c +++ b/src/inputPlugins/mp3_plugin.c @@ -957,12 +957,18 @@ static int mp3Read(mp3DecodeData * data, ReplayGainInfo ** replayGainInfo) pcm_length -= data->dropSamplesAtEnd; } - for (; i < pcm_length; i++) { - unsigned int num_samples; + while (i < pcm_length) { + unsigned int num_samples = + (data->outputBufferEnd - data->outputPtr) / + (2 * MAD_NCHANNELS(&(data->frame).header)); + if (num_samples > pcm_length - i) + num_samples = pcm_length - i; + + i += num_samples; num_samples = dither_buffer((mpd_sint16 *) data->outputPtr, &data->synth, &data->dither, - i, i + 1, + i - num_samples, i, MAD_NCHANNELS(&(data->frame).header)); data->outputPtr += 2 * num_samples; |