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Somewhat optimized Flake encoder

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This commit is contained in:
Grigory Chudov
2013-03-25 22:33:21 -04:00
parent d080406f82
commit 55af6e181a
3 changed files with 98 additions and 121 deletions
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13
CUETools.Codecs.FLACCL/FLACCLWriter.cs
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@@ -867,9 +867,11 @@ namespace CUETools.Codecs.FLACCL
unsafe int measure_residual(FlacFrame frame, FlacSubframeInfo sub, int pos, int cnt, int k)
{
int q = 0;
for (int i = pos; i < pos + cnt; i++)
int* r = sub.best.residual + pos;
int* fin = r + cnt;
while (r < fin)
{
int v = sub.best.residual[i];
int v = *(r++);
uint uv = (uint)((v << 1) ^ (v >> 31));
q += (int)(uv >> k);
}
@@ -2097,8 +2099,8 @@ namespace CUETools.Codecs.FLACCL
bitwriter.writebits(24, 18 * seek_table.Length);
for (int i = 0; i < seek_table.Length; i++)
{
bitwriter.writebits64(Flake.FLAC__STREAM_METADATA_SEEKPOINT_SAMPLE_NUMBER_LEN, (ulong)seek_table[i].number);
bitwriter.writebits64(Flake.FLAC__STREAM_METADATA_SEEKPOINT_STREAM_OFFSET_LEN, (ulong)seek_table[i].offset);
bitwriter.writebits(Flake.FLAC__STREAM_METADATA_SEEKPOINT_SAMPLE_NUMBER_LEN, (ulong)seek_table[i].number);
bitwriter.writebits(Flake.FLAC__STREAM_METADATA_SEEKPOINT_STREAM_OFFSET_LEN, (ulong)seek_table[i].offset);
bitwriter.writebits(Flake.FLAC__STREAM_METADATA_SEEKPOINT_FRAME_SAMPLES_LEN, seek_table[i].framesize);
}
bitwriter.flush();
@@ -2698,10 +2700,7 @@ namespace CUETools.Codecs.FLACCL
frame.writer = new BitWriter(outputBuffer, 0, outputBuffer.Length);
if (writer._settings.DoVerify)
{
verify = new FlakeReader(new AudioPCMConfig((int)bits_per_sample, channels, 44100));
verify.DoCRC = false;
}
}
public void Dispose()