void Decompress8Mono(BitStream bs, Stream outputStream)
{
int flag;
flag = bs.ReadBit(); /* DataPresent */
Console.WriteLine(flag == 1 ? "data present" : "data not present");
flag = bs.ReadBit(); /* Is16Bits */
Console.WriteLine(flag == 1 ? "16 bits" : "8 bits");
flag = bs.ReadBit(); /* IsStereo */
Console.WriteLine(flag == 1 ? "stereo" : "mono");
HuffmanTree t = new HuffmanTree();
byte _base;
t.Build(bs);
_base = (byte)bs.ReadByte();
OutputSample(outputStream, _base);
while (bs.ReadCount < bs.Length)
{
/* read the huffman encoded deltas */
int d = (int)t.Decode(bs);
_base = (byte)(_base + d);
OutputSample(outputStream, _base);
}
Console.WriteLine("outputted {0} bytes in samples for this frame.", outputStream.Position);
}
void Decompress16Stereo(BitStream bs, Stream outputStream)
{
int flag;
flag = bs.ReadBit(); /* DataPresent */
Console.WriteLine(flag == 1 ? "data present" : "data not present");
flag = bs.ReadBit(); /* IsStereo */
Console.WriteLine(flag == 1 ? "stereo" : "mono");
flag = bs.ReadBit(); /* Is16Bits */
Console.WriteLine(flag == 1 ? "16 bits" : "8 bits");
HuffmanTree ll = new HuffmanTree();
HuffmanTree lh = new HuffmanTree();
HuffmanTree rl = new HuffmanTree();
HuffmanTree rh = new HuffmanTree();
ll.Build(bs);
lh.Build(bs);
rl.Build(bs);
rh.Build(bs);
byte[] tmp = new byte[2];
short rightbase;
short leftbase;
tmp[1] = (byte)bs.ReadByte();
tmp[0] = (byte)bs.ReadByte();
rightbase = BitConverter.ToInt16(tmp, 0);
tmp[1] = (byte)bs.ReadByte();
tmp[0] = (byte)bs.ReadByte();
leftbase = BitConverter.ToInt16(tmp, 0);
Console.WriteLine("initial bases = {0}, {1}", leftbase, rightbase);
OutputSample(outputStream, leftbase, rightbase);
while (bs.ReadCount < bs.Length)
{
/* read the huffman encoded deltas */
tmp[0] = (byte)(ll == null ? 0 : ll.Decode(bs));
tmp[1] = (byte)(lh == null ? 0 : lh.Decode(bs));
short leftdelta = BitConverter.ToInt16(tmp, 0);
tmp[0] = (byte)(rl == null ? 0 : rl.Decode(bs));
tmp[1] = (byte)(rh == null ? 0 : rh.Decode(bs));
short rightdelta = BitConverter.ToInt16(tmp, 0);
rightbase += rightdelta;
leftbase += leftdelta;
OutputSample(outputStream, leftbase, rightbase);
}
Console.WriteLine("outputted {0} bytes in samples for this frame.", outputStream.Position);
}
void Decompress16Mono(BitStream bs, Stream outputStream)
{
int flag;
flag = bs.ReadBit(); /* DataPresent */
Console.WriteLine(flag == 1 ? "data present" : "data not present");
flag = bs.ReadBit(); /* Is16Bits */
Console.WriteLine(flag == 1 ? "16 bits" : "8 bits");
flag = bs.ReadBit(); /* IsStereo */
Console.WriteLine(flag == 1 ? "stereo" : "mono");
HuffmanTree h = new HuffmanTree();
HuffmanTree l = new HuffmanTree();
byte[] _base = new byte[2];
l.Build(bs);
h.Build(bs);
_base[1] = (byte)bs.ReadByte();
_base[0] = (byte)bs.ReadByte();
OutputSample(outputStream, _base);
while (bs.ReadCount < bs.Length)
{
/* read the huffman encoded deltas */
int ld = (int)l.Decode(bs);
int hd = (int)h.Decode(bs);
if (ld + _base[0] > 255)
{
_base[1] += 1;
_base[0] = (byte)(ld + _base[0] - 255);
}
else
{
_base[0] = (byte)(hd + _base[0]);
}
_base[1] = (byte)(hd + _base[1]);
OutputSample(outputStream, _base);
}
Console.WriteLine("outputted {0} bytes in samples for this frame.", outputStream.Position);
}
uint DecodeValue(BitStream bs)
{
uint lowValue, highValue;
lowValue = 0;
if (lowTree != null)
{
lowValue = lowTree.Decode(bs);
}
highValue = 0;
if (highTree != null)
{
highValue = highTree.Decode(bs);
}
return(lowValue | (highValue << 8));
}
void Decompress8Stereo(BitStream bs, Stream outputStream)
{
int flag;
flag = bs.ReadBit(); /* DataPresent */
Console.WriteLine(flag == 1 ? "data present" : "data not present");
flag = bs.ReadBit(); /* Is16Bits */
Console.WriteLine(flag == 1 ? "16 bits" : "8 bits");
flag = bs.ReadBit(); /* IsStereo */
Console.WriteLine(flag == 1 ? "stereo" : "mono");
HuffmanTree r = new HuffmanTree();
HuffmanTree l = new HuffmanTree();
byte leftbase;
byte rightbase;
l.Build(bs);
r.Build(bs);
rightbase = (byte)bs.ReadByte();
leftbase = (byte)bs.ReadByte();
OutputSample(outputStream, leftbase, rightbase);
while (bs.ReadCount < bs.Length)
{
/* read the huffman encoded deltas */
int rd = (int)r.Decode(bs);
int ld = (int)l.Decode(bs);
rightbase = (byte)(rightbase + rd);
leftbase = (byte)(leftbase + ld);
OutputSample(outputStream, leftbase, rightbase);
}
Console.WriteLine("outputted {0} bytes in samples for this frame.", outputStream.Position);
}
void Decompress8Mono (BitStream bs, Stream outputStream)
{
int flag;
flag = bs.ReadBit(); /* DataPresent */
Console.WriteLine (flag == 1 ? "data present" : "data not present");
flag = bs.ReadBit(); /* Is16Bits */
Console.WriteLine (flag == 1 ? "16 bits" : "8 bits");
flag = bs.ReadBit(); /* IsStereo */
Console.WriteLine (flag == 1 ? "stereo" : "mono");
HuffmanTree t = new HuffmanTree();
byte _base;
t.Build (bs);
_base = (byte)bs.ReadByte();
OutputSample (outputStream, _base);
while (bs.ReadCount < bs.Length) {
/* read the huffman encoded deltas */
int d = (int)t.Decode (bs);
_base = (byte)(_base + d);
OutputSample (outputStream, _base);
}
Console.WriteLine ("outputted {0} bytes in samples for this frame.", outputStream.Position);
}
void Decompress8Stereo (BitStream bs, Stream outputStream)
{
int flag;
flag = bs.ReadBit(); /* DataPresent */
Console.WriteLine (flag == 1 ? "data present" : "data not present");
flag = bs.ReadBit(); /* Is16Bits */
Console.WriteLine (flag == 1 ? "16 bits" : "8 bits");
flag = bs.ReadBit(); /* IsStereo */
Console.WriteLine (flag == 1 ? "stereo" : "mono");
HuffmanTree r = new HuffmanTree();
HuffmanTree l = new HuffmanTree();
byte leftbase;
byte rightbase;
l.Build (bs);
r.Build (bs);
rightbase = (byte)bs.ReadByte();
leftbase = (byte)bs.ReadByte();
OutputSample (outputStream, leftbase, rightbase);
while (bs.ReadCount < bs.Length) {
/* read the huffman encoded deltas */
int rd = (int)r.Decode (bs);
int ld = (int)l.Decode (bs);
rightbase = (byte)(rightbase + rd);
leftbase = (byte)(leftbase + ld);
OutputSample (outputStream, leftbase, rightbase);
}
Console.WriteLine ("outputted {0} bytes in samples for this frame.", outputStream.Position);
}
void Decompress16Mono (BitStream bs, Stream outputStream)
{
int flag;
flag = bs.ReadBit(); /* DataPresent */
Console.WriteLine (flag == 1 ? "data present" : "data not present");
flag = bs.ReadBit(); /* Is16Bits */
Console.WriteLine (flag == 1 ? "16 bits" : "8 bits");
flag = bs.ReadBit(); /* IsStereo */
Console.WriteLine (flag == 1 ? "stereo" : "mono");
HuffmanTree h = new HuffmanTree();
HuffmanTree l = new HuffmanTree();
byte[] _base = new byte[2];
l.Build (bs);
h.Build (bs);
_base[1] = (byte)bs.ReadByte();
_base[0] = (byte)bs.ReadByte();
OutputSample (outputStream, _base);
while (bs.ReadCount < bs.Length) {
/* read the huffman encoded deltas */
int ld = (int)l.Decode (bs);
int hd = (int)h.Decode (bs);
if (ld + _base[0] > 255) {
_base[1] += 1;
_base[0] = (byte)(ld + _base[0] - 255);
}
else
_base[0] = (byte)(hd + _base[0]);
_base[1] = (byte)(hd + _base[1]);
OutputSample (outputStream, _base);
}
Console.WriteLine ("outputted {0} bytes in samples for this frame.", outputStream.Position);
}
void Decompress16Stereo (BitStream bs, Stream outputStream)
{
int flag;
flag = bs.ReadBit(); /* DataPresent */
Console.WriteLine (flag == 1 ? "data present" : "data not present");
flag = bs.ReadBit(); /* IsStereo */
Console.WriteLine (flag == 1 ? "stereo" : "mono");
flag = bs.ReadBit(); /* Is16Bits */
Console.WriteLine (flag == 1 ? "16 bits" : "8 bits");
HuffmanTree ll = new HuffmanTree();
HuffmanTree lh = new HuffmanTree();
HuffmanTree rl = new HuffmanTree();
HuffmanTree rh = new HuffmanTree();
ll.Build (bs);
lh.Build (bs);
rl.Build (bs);
rh.Build (bs);
byte[] tmp = new byte[2];
short rightbase;
short leftbase;
tmp[1] = (byte)bs.ReadByte();
tmp[0] = (byte)bs.ReadByte();
rightbase = BitConverter.ToInt16 (tmp, 0);
tmp[1] = (byte)bs.ReadByte();
tmp[0] = (byte)bs.ReadByte();
leftbase = BitConverter.ToInt16 (tmp, 0);
Console.WriteLine ("initial bases = {0}, {1}", leftbase, rightbase);
OutputSample (outputStream, leftbase, rightbase);
while (bs.ReadCount < bs.Length) {
/* read the huffman encoded deltas */
tmp[0] = (byte)(ll == null ? 0 : ll.Decode (bs));
tmp[1] = (byte)(lh == null ? 0 : lh.Decode (bs));
short leftdelta = BitConverter.ToInt16 (tmp, 0);
tmp[0] = (byte)(rl == null ? 0 : rl.Decode (bs));
tmp[1] = (byte)(rh == null ? 0 : rh.Decode (bs));
short rightdelta = BitConverter.ToInt16 (tmp, 0);
rightbase += rightdelta;
leftbase += leftdelta;
OutputSample (outputStream, leftbase, rightbase);
}
Console.WriteLine ("outputted {0} bytes in samples for this frame.", outputStream.Position);
}
