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CUETools.Codecs.ALAC: fix a bug that was causing corruption of the last 4 bytes in some files.

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This commit is contained in:
Grigory Chudov
2018-02-19 14:04:14 -05:00
parent b6fe9968a1
commit 6312b2a86a
3 changed files with 42 additions and 32 deletions
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61
CUETools.Codecs.ALAC/ALACWriter.cs
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@@ -492,14 +492,16 @@ namespace CUETools.Codecs.ALAC
res[0] = smp[0];
for (int i = 1; i < n; i++)
res[i] = smp[i] - smp[i - 1];
}
res[n] = 1; // Stop byte to help alac_entropy_coder;
}
unsafe static void alac_encode_residual_0(int* res, int* smp, int n)
unsafe static void alac_encode_residual_0(int* res, int* smp, int n)
{
AudioSamples.MemCpy(res, smp, n);
}
res[n] = 1; // Stop byte to help alac_entropy_coder;
}
unsafe static void alac_encode_residual(int* res, int* smp, int n, int order, int* coefs, int shift, int bps)
unsafe static void alac_encode_residual(int* res, int* smp, int n, int order, int* coefs, int shift, int bps)
{
int csum = 0;
@@ -838,35 +840,32 @@ namespace CUETools.Codecs.ALAC
}
}
unsafe void encode_residual(ALACFrame frame, int ch, int pass, int best_windows)
{
int* smp = frame.subframes[ch].samples;
int i, n = frame.blocksize;
unsafe void encode_residual(ALACFrame frame, int ch, int pass, int best_windows)
{
int* smp = frame.subframes[ch].samples;
int i, n = frame.blocksize;
int bps = Settings.PCM.BitsPerSample + Settings.PCM.ChannelCount - 1;
// FIXED
//if (0 == (2 & frame.subframes[ch].done_fixed) && (pass != 1 || n < eparams.max_prediction_order))
//{
// frame.subframes[ch].done_fixed |= 2;
// frame.current.order = 31;
// frame.current.window = -1;
// alac_encode_residual_31(frame.current.residual, frame.subframes[ch].samples, frame.blocksize);
// frame.current.size = (uint)(alac_entropy_coder(frame.current.residual, frame.blocksize, bps, out frame.current.ricemodifier) + 16);
// frame.ChooseBestSubframe(ch);
//}
//if (0 == (1 & frame.subframes[ch].done_fixed) && (pass != 1 || n < eparams.max_prediction_order))
//{
// frame.subframes[ch].done_fixed |= 1;
// frame.current.order = 0;
// frame.current.window = -1;
// alac_encode_residual_0(frame.current.residual, frame.subframes[ch].samples, frame.blocksize);
// frame.current.size = (uint)(alac_entropy_coder(frame.current.residual, frame.blocksize, bps, out frame.current.ricemodifier) + 16);
// frame.ChooseBestSubframe(ch);
//}
// LPC
if (n < eparams.max_prediction_order)
return;
// FIXED
//if (0 == (2 & frame.subframes[ch].done_fixed) && (pass != 1 || n < eparams.max_prediction_order))
//{
// frame.subframes[ch].done_fixed |= 2;
// frame.current.order = 31;
// frame.current.window = -1;
// alac_encode_residual_31(frame.current.residual, frame.subframes[ch].samples, frame.blocksize);
// frame.current.size = (uint)(alac_entropy_coder(frame.current.residual, frame.blocksize, bps, out frame.current.ricemodifier) + 16);
// frame.ChooseBestSubframe(ch);
//}
//if (0 == (1 & frame.subframes[ch].done_fixed) && (pass != 1 || n < eparams.max_prediction_order))
if (0 == (1 & frame.subframes[ch].done_fixed) && n < eparams.max_prediction_order)
{
frame.subframes[ch].done_fixed |= 1;
frame.current.order = 0;
frame.current.window = -1;
alac_encode_residual_0(frame.current.residual, frame.subframes[ch].samples, frame.blocksize);
frame.current.size = (uint)(alac_entropy_coder(frame.current.residual, frame.blocksize, bps, out frame.current.ricemodifier) + 16);
frame.ChooseBestSubframe(ch);
}
float* lpcs = stackalloc float[lpc.MAX_LPC_ORDER * lpc.MAX_LPC_ORDER];
int min_order = eparams.min_prediction_order;