internal override FlacMethod FindBestMethod(int[] channelSamples, int bitsPerSample)
{
int i = 1;
int firstSample = channelSamples[0];
while (i < channelSamples.Length && channelSamples[i] == firstSample)
i++;
if (i == channelSamples.Length)
{
// constant method will be better than other methods
return new FlacConstantMethod(bitsPerSample);
}
FlacMethod verbatimMethod;
verbatimMethod = new FlacVerbatimMethod(
channelSamples.Length, bitsPerSample);
FlacMethod fixedMethod = null, lpcMethod = null;
parallel.Invoke(
delegate
{
fixedMethod = FindBestFixedMethod(channelSamples, bitsPerSample, policy);
},
delegate
{
lpcMethod = FindBestLpcMethod(channelSamples, bitsPerSample, policy);
}
);
return FindBestMethod(new FlacMethod[] {
verbatimMethod, fixedMethod, lpcMethod });
}
internal override FlacMethod FindBestMethod(int[] channelSamples, int bitsPerSample)
{
int i = 1;
int firstSample = channelSamples[0];
while (i < channelSamples.Length && channelSamples[i] == firstSample)
{
i++;
}
if (i == channelSamples.Length)
{
// constant method will be better than other methods
return(new FlacConstantMethod(bitsPerSample));
}
FlacMethod verbatimMethod;
verbatimMethod = new FlacVerbatimMethod(
channelSamples.Length, bitsPerSample);
FlacMethod fixedMethod = null, lpcMethod = null;
parallel.Invoke(
delegate
{
fixedMethod = FindBestFixedMethod(channelSamples, bitsPerSample, policy);
},
delegate
{
lpcMethod = FindBestLpcMethod(channelSamples, bitsPerSample, policy);
}
);
return(FindBestMethod(new FlacMethod[] {
verbatimMethod, fixedMethod, lpcMethod
}));
}