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seektable support, optimizations

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This commit is contained in:
chudov
2009-08-20 04:09:53 +00:00
parent 4ca116c1c5
commit f61382e43b
5 changed files with 681 additions and 330 deletions
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94
CUETools.Codecs.FLAKE/Flake.cs
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@@ -11,6 +11,10 @@ namespace CUETools.Codecs.FLAKE
public const int MAX_PARTITION_ORDER = 8;
public const int MAX_PARTITIONS = 1 << MAX_PARTITION_ORDER;
public const int FLAC__STREAM_METADATA_SEEKPOINT_SAMPLE_NUMBER_LEN = 64; /* bits */
public const int FLAC__STREAM_METADATA_SEEKPOINT_STREAM_OFFSET_LEN = 64; /* bits */
public const int FLAC__STREAM_METADATA_SEEKPOINT_FRAME_SAMPLES_LEN = 16; /* bits */
public static readonly int[] flac_samplerates = new int[16] {
0, 0, 0, 0,
8000, 16000, 22050, 24000, 32000, 44100, 48000, 96000,
@@ -39,59 +43,22 @@ namespace CUETools.Codecs.FLAKE
public static PredictionType LookupPredictionType(string name)
{
switch (name)
{
case "fixed": return PredictionType.Fixed;
case "levinson": return PredictionType.Levinson;
case "search" : return PredictionType.Search;
}
return (PredictionType)Int32.Parse(name);
return (PredictionType)(Enum.Parse(typeof(PredictionType), name, true));
}
public static StereoMethod LookupStereoMethod(string name)
{
switch (name)
{
case "independent": return StereoMethod.Independent;
case "estimate": return StereoMethod.Estimate;
case "estimate2": return StereoMethod.Estimate2;
case "estimate3": return StereoMethod.Estimate3;
case "estimate4": return StereoMethod.Estimate4;
case "estimate5": return StereoMethod.Estimate5;
case "search": return StereoMethod.Search;
}
return (StereoMethod)Int32.Parse(name);
return (StereoMethod)(Enum.Parse(typeof(StereoMethod), name, true));
}
public static OrderMethod LookupOrderMethod(string name)
{
switch (name)
{
case "estimate": return OrderMethod.Estimate;
case "logfast": return OrderMethod.LogFast;
case "logsearch": return OrderMethod.LogSearch;
case "estsearch": return OrderMethod.EstSearch;
case "search": return OrderMethod.Search;
}
return (OrderMethod)Int32.Parse(name);
return (OrderMethod)(Enum.Parse(typeof(OrderMethod), name, true));
}
public static WindowFunction LookupWindowFunction(string name)
{
string[] parts = name.Split(',');
WindowFunction res = (WindowFunction)0;
foreach (string part in parts)
{
switch (part)
{
case "welch": res |= WindowFunction.Welch; break;
case "tukey": res |= WindowFunction.Tukey; break;
case "hann": res |= WindowFunction.Hann; break;
case "flattop": res |= WindowFunction.Flattop; break;
default: res |= (WindowFunction)Int32.Parse(name); break;
}
}
return res;
return (WindowFunction)(Enum.Parse(typeof(WindowFunction), name, true));
}
unsafe public static bool memcmp(int* res, int* smp, int n)
@@ -124,6 +91,14 @@ namespace CUETools.Codecs.FLAKE
*(res++) = *(src2++);
}
}
unsafe public static void deinterlace(int* dst1, int* dst2, int* src, int n)
{
for (int i = n; i > 0; i--)
{
*(dst1++) = *(src++);
*(dst2++) = *(src++);
}
}
}
unsafe struct RiceContext
@@ -137,20 +112,28 @@ namespace CUETools.Codecs.FLAKE
{
public SubframeType type;
public int order;
public uint obits;
public uint wbits;
public int cbits;
public int shift;
public fixed int coefs[lpc.MAX_LPC_ORDER];
public int* samples;
public int* residual;
public RiceContext rc;
public uint size;
public fixed uint done_lpcs[lpc.MAX_LPC_WINDOWS];
public uint done_fixed;
public int cbits;
public int shift;
public fixed int coefs[lpc.MAX_LPC_ORDER];
public int window;
};
unsafe struct FlacSubframeInfo
{
public FlacSubframe best;
public uint obits;
public uint wbits;
public int* samples;
public fixed uint done_lpcs[lpc.MAX_LPC_WINDOWS * 2];
public uint done_fixed;
public fixed double lpcs_reff[lpc.MAX_LPC_ORDER * lpc.MAX_LPC_WINDOWS];
public fixed int lpcs_order[lpc.MAX_LPC_WINDOWS];
};
unsafe struct FlacFrame
{
public int blocksize;
@@ -158,7 +141,7 @@ namespace CUETools.Codecs.FLAKE
public ChannelMode ch_mode;
public int ch_order0, ch_order1;
public byte crc8;
public FlacSubframe* subframes;
public FlacSubframeInfo* subframes;
public uint frame_count;
public FlacSubframe current;
}
@@ -170,6 +153,7 @@ namespace CUETools.Codecs.FLAKE
LogFast = 2,
LogSearch = 3,
EstSearch = 4,
Estimate8 = 6,
Search = 5
}
@@ -204,11 +188,8 @@ namespace CUETools.Codecs.FLAKE
{
Independent = 0,
Estimate = 1,
Estimate2 = 2,
Estimate3 = 3,
Estimate4 = 4,
Estimate5 = 5,
Search = 9
Evaluate = 2,
Search = 3
}
public enum SubframeType
@@ -233,7 +214,8 @@ namespace CUETools.Codecs.FLAKE
Welch = 1,
Tukey = 2,
Hann = 4,
Flattop = 8
Flattop = 8,
TukeyFlattop = 10
}
public struct SeekPoint