void ReadAudioChunk(BitStream bs, int channel)
{
uint frameAudioLength = 0;
uint audioDecompressedLength = 0;
bool compressed = ((audioFlags[channel] & (int)ARFlags.Compressed) == (int)ARFlags.Compressed);
bool is16 = ((audioFlags[channel] & (int)ARFlags.Is16Bit) == (int)ARFlags.Is16Bit);
bool stereo = ((audioFlags[channel] & (int)ARFlags.Stereo) == (int)ARFlags.Stereo);
bs.AssertAtByteBoundary();
bs.DebugFirst();
Console.WriteLine("reading audio chunk length");
frameAudioLength = bs.ReadDWord();
Console.WriteLine("audio chunk length = {0}", frameAudioLength);
if (compressed)
{
audioDecompressedLength = bs.ReadDWord();
Console.WriteLine("decompressed audio length = {0}", audioDecompressedLength);
byte[] streamBuf = new byte[frameAudioLength];
bs.Read(streamBuf, 0, streamBuf.Length);
audioOut[channel] = new byte[audioDecompressedLength];
if (is16)
{
if (stereo)
{
Decompress16Stereo(new BitStream(streamBuf), new MemoryStream(audioOut[channel]));
}
else
{
Decompress16Mono(new BitStream(streamBuf), new MemoryStream(audioOut[channel]));
}
}
else
if (stereo)
{
Decompress8Stereo(new BitStream(streamBuf), new MemoryStream(audioOut[channel]));
}
else
{
Decompress8Mono(new BitStream(streamBuf), new MemoryStream(audioOut[channel]));
}
}
else
{
audioOut[channel] = new byte[frameAudioLength];
bs.Read(audioOut[channel], 0, (int)frameAudioLength);
}
}
void ReadPaletteChunk(BitStream bs)
{
byte[] new_palette = new byte[256 * 3];
bs.AssertAtByteBoundary();
bs.ZeroReadCount();
int paletteLength = bs.ReadByte();
Console.WriteLine("palette chunk is {0} bytes long", paletteLength * 4);
// byte[] palBuf = new byte[paletteLength * 4 - 1];
// bs.Read (palBuf, 0, palBuf.Length);
// MemoryStream palStream = new MemoryStream (palBuf, false);
BitStream palStream = bs;
int new_index = 0, index = 0;
while (new_index < 256)
{
byte p = (byte)palStream.ReadByte();
if ((p & 0x80) == 0x80)
{
int count = (p & 0x7f) + 1;
// Console.WriteLine ("copy1 {0} entries, from {1} to {2}", count, index, new_index);
Array.Copy(palette, index * 3, new_palette, new_index * 3, count * 3);
index += count;
new_index += count;
}
else if ((p & 0x40) == 0x40)
{
int count = (p & 0x3f) + 1;
int tmp_index = palStream.ReadByte();
// Console.WriteLine ("copy2 {0} entries, from {1} to {2}", count, tmp_index, new_index);
Array.Copy(palette, tmp_index * 3, new_palette, new_index * 3, count * 3);
new_index += count;
}
else if ((p & 0xc0) == 0x00)
{
int b = p & 0x3f;
int g = palStream.ReadByte() & 0x3f;
int r = palStream.ReadByte() & 0x3f;
new_palette [new_index * 3] = palmap[r];
new_palette [new_index * 3 + 1] = palmap[g];
new_palette [new_index * 3 + 2] = palmap[b];
// Console.WriteLine ("Assign palette[{0}] = {1},{2},{3}", new_index,
// palmap[r], palmap[g], palmap[b]);
new_index++;
}
}
palette = new_palette;
// Console.WriteLine ("read {0} bytes toward filling the palette", palBuf.Length + 1);
}
void ReadAudioChunk (BitStream bs, int channel)
{
uint frameAudioLength = 0;
uint audioDecompressedLength = 0;
bool compressed = ((audioFlags[channel] & (int)ARFlags.Compressed) == (int)ARFlags.Compressed);
bool is16 = ((audioFlags[channel] & (int)ARFlags.Is16Bit) == (int)ARFlags.Is16Bit);
bool stereo = ((audioFlags[channel] & (int)ARFlags.Stereo) == (int)ARFlags.Stereo);
bs.AssertAtByteBoundary ();
bs.DebugFirst ();
Console.WriteLine ("reading audio chunk length");
frameAudioLength = bs.ReadDWord ();
Console.WriteLine ("audio chunk length = {0}", frameAudioLength);
if (compressed) {
audioDecompressedLength = bs.ReadDWord ();
Console.WriteLine ("decompressed audio length = {0}", audioDecompressedLength);
byte[] streamBuf = new byte[frameAudioLength];
bs.Read (streamBuf, 0, streamBuf.Length);
audioOut[channel] = new byte[audioDecompressedLength];
if (is16)
if (stereo)
Decompress16Stereo (new BitStream (streamBuf), new MemoryStream (audioOut[channel]));
else
Decompress16Mono (new BitStream (streamBuf), new MemoryStream (audioOut[channel]));
else
if (stereo)
Decompress8Stereo (new BitStream (streamBuf), new MemoryStream (audioOut[channel]));
else
Decompress8Mono (new BitStream (streamBuf), new MemoryStream (audioOut[channel]));
}
else {
audioOut[channel] = new byte[frameAudioLength];
bs.Read (audioOut[channel], 0, (int)frameAudioLength);
}
}
void ReadPaletteChunk (BitStream bs)
{
byte[] new_palette = new byte[256 * 3];
bs.AssertAtByteBoundary ();
bs.ZeroReadCount ();
int paletteLength = bs.ReadByte();
Console.WriteLine ("palette chunk is {0} bytes long", paletteLength * 4);
// byte[] palBuf = new byte[paletteLength * 4 - 1];
// bs.Read (palBuf, 0, palBuf.Length);
// MemoryStream palStream = new MemoryStream (palBuf, false);
BitStream palStream = bs;
int new_index = 0, index = 0;
while (new_index < 256) {
byte p = (byte)palStream.ReadByte();
if ((p & 0x80) == 0x80) {
int count = (p & 0x7f) + 1;
// Console.WriteLine ("copy1 {0} entries, from {1} to {2}", count, index, new_index);
Array.Copy (palette, index * 3, new_palette, new_index * 3, count * 3);
index += count;
new_index += count;
}
else if ((p & 0x40) == 0x40) {
int count = (p & 0x3f) + 1;
int tmp_index = palStream.ReadByte();
// Console.WriteLine ("copy2 {0} entries, from {1} to {2}", count, tmp_index, new_index);
Array.Copy (palette, tmp_index * 3, new_palette, new_index * 3, count * 3);
new_index += count;
}
else if ((p & 0xc0) == 0x00) {
int b = p & 0x3f;
int g = palStream.ReadByte() & 0x3f;
int r = palStream.ReadByte() & 0x3f;
new_palette [new_index * 3] = palmap[r];
new_palette [new_index * 3 + 1] = palmap[g];
new_palette [new_index * 3 + 2] = palmap[b];
// Console.WriteLine ("Assign palette[{0}] = {1},{2},{3}", new_index,
// palmap[r], palmap[g], palmap[b]);
new_index ++;
}
}
palette = new_palette;
// Console.WriteLine ("read {0} bytes toward filling the palette", palBuf.Length + 1);
}
