public Block(DspState dspState)
{
LoadNativeLibrary();
native = vorbis_block_create();
vorbis_block_init(dspState.native, native);
}
private void UpdateDspTab()
{
DspState dsp = _state.Dsp;
List <RegEntry> entries = new List <RegEntry>();
Action <int, string> addReg = (int i, string name) => {
entries.Add(new RegEntry("$" + i.ToString("X2"), name, dsp.Regs[i], Format.X8));
};
addReg(0x0C, "Main Volume (MVOL) - Left");
addReg(0x1C, "Main Volume (MVOL) - Right");
addReg(0x2C, "Echo Volume (EVOL) - Left");
addReg(0x3C, "Echo Volume (EVOL) - Right");
addReg(0x4C, "Key On (KON)");
addReg(0x5C, "Key Off (KOF)");
addReg(0x7C, "Source End Block (ENDX)");
addReg(0x0D, "Echo Feedback (EFB)");
addReg(0x2D, "Pitch Modulation (PMON)");
addReg(0x3D, "Noise Enable (NON)");
addReg(0x4D, "Echo Enable (EON)");
addReg(0x5D, "Source Directory (Offset) (DIR)");
addReg(0x6D, "Echo Buffer (Offset) (ESA)");
addReg(0x7D, "Echo Delay (EDL)");
entries.Add(new RegEntry("$6C", "Flags (FLG)", null));
entries.Add(new RegEntry("$6C.0-4", "Noise Clock", dsp.Regs[0x6C] & 0x1F, Format.X8));
entries.Add(new RegEntry("$6C.5", "Echo Disabled", (dsp.Regs[0x6C] & 0x20) != 0));
entries.Add(new RegEntry("$6C.6", "Mute", (dsp.Regs[0x6C] & 0x40) != 0));
entries.Add(new RegEntry("$6C.7", "Reset", (dsp.Regs[0x6C] & 0x80) != 0));
entries.Add(new RegEntry("$xF", "Coefficients", null));
for (int i = 0; i < 8; i++)
{
addReg((i << 4) | 0x0F, "Coefficient " + i);
}
for (int i = 0; i < 8; i++)
{
entries.Add(new RegEntry("Voice #" + i.ToString(), "", null));
int voice = i << 4;
addReg(voice | 0x00, "Left Volume (VOL)");
addReg(voice | 0x01, "Right Volume (VOL)");
entries.Add(new RegEntry("$" + i + "2 + $" + i + "3", "Pitch (P)", dsp.Regs[voice | 0x02] | (dsp.Regs[voice | 0x03] << 8), Format.X16));
addReg(voice | 0x04, "Source (SRCN)");
addReg(voice | 0x05, "ADSR1");
addReg(voice | 0x06, "ADSR2");
addReg(voice | 0x07, "GAIN");
addReg(voice | 0x08, "ENVX");
addReg(voice | 0x09, "OUTX");
}
ctrlPropertyDsp.UpdateState(entries);
}
private void DecodeInit()
{
convbuffer = new byte[convsize]; // take 8k out of the data segment, not the stack
SyncState = new SyncState(); // sync and verify incoming physical bitstream
StreamState = new StreamState(); // take physical pages, weld into a logical stream of packets
Page = new Page(); // one Ogg bitstream page. Vorbis packets are inside
Packet = new Packet(); // one raw packet of data for decode
Info = new Info(); // struct that stores all the static vorbis bitstream settings
Comment = new Comment(); // struct that stores all the bitstream user comments
DspState = new DspState(); // central working state for the packet->PCM decoder
Block = new Block(DspState); // local working space for packet->PCM decode
bytes = 0;
}
Stream DecodeStream(Stream input, bool skipWavHeader)
{
int convsize = 4096 * 2;
byte[] convbuffer = new byte[convsize]; // take 8k out of the data segment, not the stack
TextWriter s_err = new DebugWriter();
Stream output = new MemoryStream();
if (!skipWavHeader)
{
output.Seek(HEADER_SIZE, SeekOrigin.Begin); // reserve place for WAV header
}
SyncState oy = new SyncState(); // sync and verify incoming physical bitstream
StreamState os = new StreamState(); // take physical pages, weld into a logical stream of packets
Page og = new Page(); // one Ogg bitstream page. Vorbis packets are inside
Packet op = new Packet(); // one raw packet of data for decode
Info vi = new Info(); // struct that stores all the static vorbis bitstream settings
Comment vc = new Comment(); // struct that stores all the bitstream user comments
DspState vd = new DspState(); // central working state for the packet->PCM decoder
Block vb = new Block(vd); // local working space for packet->PCM decode
byte[] buffer;
int bytes = 0;
// Decode setup
oy.init(); // Now we can read pages
while (true)
{ // we repeat if the bitstream is chained
int eos = 0;
// grab some data at the head of the stream. We want the first page
// (which is guaranteed to be small and only contain the Vorbis
// stream initial header) We need the first page to get the stream
// serialno.
// submit a 4k block to libvorbis' Ogg layer
int index = oy.buffer(4096);
buffer = oy.data;
try
{
bytes = input.Read(buffer, index, 4096);
}
catch (Exception e)
{
s_err.WriteLine(e);
}
oy.wrote(bytes);
// Get the first page.
if (oy.pageout(og) != 1)
{
// have we simply run out of data? If so, we're done.
if (bytes < 4096)
{
break;
}
// error case. Must not be Vorbis data
s_err.WriteLine("Input does not appear to be an Ogg bitstream.");
}
// Get the serial number and set up the rest of decode.
// serialno first; use it to set up a logical stream
os.init(og.serialno());
// extract the initial header from the first page and verify that the
// Ogg bitstream is in fact Vorbis data
// I handle the initial header first instead of just having the code
// read all three Vorbis headers at once because reading the initial
// header is an easy way to identify a Vorbis bitstream and it's
// useful to see that functionality seperated out.
vi.init();
vc.init();
if (os.pagein(og) < 0)
{
// error; stream version mismatch perhaps
s_err.WriteLine("Error reading first page of Ogg bitstream data.");
}
if (os.packetout(op) != 1)
{
// no page? must not be vorbis
s_err.WriteLine("Error reading initial header packet.");
}
if (vi.synthesis_headerin(vc, op) < 0)
{
// error case; not a vorbis header
s_err.WriteLine("This Ogg bitstream does not contain Vorbis audio data.");
}
// At this point, we're sure we're Vorbis. We've set up the logical
// (Ogg) bitstream decoder. Get the comment and codebook headers and
// set up the Vorbis decoder
// The next two packets in order are the comment and codebook headers.
// They're likely large and may span multiple pages. Thus we reead
// and submit data until we get our two pacakets, watching that no
// pages are missing. If a page is missing, error out; losing a
// header page is the only place where missing data is fatal. */
int i = 0;
while (i < 2)
{
while (i < 2)
{
int result = oy.pageout(og);
if (result == 0)
{
break; // Need more data
}
// Don't complain about missing or corrupt data yet. We'll
// catch it at the packet output phase
if (result == 1)
{
os.pagein(og); // we can ignore any errors here
// as they'll also become apparent
// at packetout
while (i < 2)
{
result = os.packetout(op);
if (result == 0)
{
break;
}
if (result == -1)
{
// Uh oh; data at some point was corrupted or missing!
// We can't tolerate that in a header. Die.
s_err.WriteLine("Corrupt secondary header. Exiting.");
}
vi.synthesis_headerin(vc, op);
i++;
}
}
}
// no harm in not checking before adding more
index = oy.buffer(4096);
buffer = oy.data;
try
{
bytes = input.Read(buffer, index, 4096);
}
catch (Exception e)
{
s_err.WriteLine(e);
}
if (bytes == 0 && i < 2)
{
s_err.WriteLine("End of file before finding all Vorbis headers!");
}
oy.wrote(bytes);
}
// Throw the comments plus a few lines about the bitstream we're
// decoding
{
byte[][] ptr = vc.user_comments;
for (int j = 0; j < vc.user_comments.Length; j++)
{
if (ptr[j] == null)
{
break;
}
s_err.WriteLine(vc.getComment(j));
}
s_err.WriteLine("\nBitstream is " + vi.channels + " channel, " + vi.rate + "Hz");
s_err.WriteLine("Encoded by: " + vc.getVendor() + "\n");
}
convsize = 4096 / vi.channels;
// OK, got and parsed all three headers. Initialize the Vorbis
// packet->PCM decoder.
vd.synthesis_init(vi); // central decode state
vb.init(vd); // local state for most of the decode
// so multiple block decodes can
// proceed in parallel. We could init
// multiple vorbis_block structures
// for vd here
float[][][] _pcm = new float[1][][];
int[] _index = new int[vi.channels];
// The rest is just a straight decode loop until end of stream
while (eos == 0)
{
while (eos == 0)
{
int result = oy.pageout(og);
if (result == 0)
{
break; // need more data
}
if (result == -1)
{ // missing or corrupt data at this page position
s_err.WriteLine("Corrupt or missing data in bitstream; continuing...");
}
else
{
os.pagein(og); // can safely ignore errors at
// this point
while (true)
{
result = os.packetout(op);
if (result == 0)
{
break; // need more data
}
if (result == -1)
{ // missing or corrupt data at this page position
// no reason to complain; already complained above
}
else
{
// we have a packet. Decode it
int samples;
if (vb.synthesis(op) == 0)
{ // test for success!
vd.synthesis_blockin(vb);
}
// **pcm is a multichannel float vector. In stereo, for
// example, pcm[0] is left, and pcm[1] is right. samples is
// the size of each channel. Convert the float values
// (-1.<=range<=1.) to whatever PCM format and write it out
while ((samples = vd.synthesis_pcmout(_pcm, _index)) > 0)
{
float[][] pcm = _pcm[0];
bool clipflag = false;
int bout = (samples < convsize ? samples : convsize);
// convert floats to 16 bit signed ints (host order) and
// interleave
for (i = 0; i < vi.channels; i++)
{
int ptr = i * 2;
//int ptr=i;
int mono = _index[i];
for (int j = 0; j < bout; j++)
{
int val = (int)(pcm[i][mono + j] * 32767.0);
// short val=(short)(pcm[i][mono+j]*32767.);
// int val=(int)Math.round(pcm[i][mono+j]*32767.);
// might as well guard against clipping
if (val > 32767)
{
val = 32767;
clipflag = true;
}
if (val < -32768)
{
val = -32768;
clipflag = true;
}
if (val < 0)
{
val = val | 0x8000;
}
convbuffer[ptr] = (byte)(val);
convbuffer[ptr + 1] = (byte)((uint)val >> 8);
ptr += 2 * (vi.channels);
}
}
if (clipflag)
{
//s_err.WriteLine("Clipping in frame "+vd.sequence);
}
output.Write(convbuffer, 0, 2 * vi.channels * bout);
vd.synthesis_read(bout); // tell libvorbis how
// many samples we
// actually consumed
}
}
}
if (og.eos() != 0)
{
eos = 1;
}
}
}
if (eos == 0)
{
index = oy.buffer(4096);
buffer = oy.data;
try
{
bytes = input.Read(buffer, index, 4096);
}
catch (Exception e)
{
s_err.WriteLine(e);
}
oy.wrote(bytes);
if (bytes == 0)
{
eos = 1;
}
}
}
// clean up this logical bitstream; before exit we see if we're
// followed by another [chained]
os.clear();
// ogg_page and ogg_packet structs always point to storage in
// libvorbis. They're never freed or manipulated directly
vb.clear();
vd.clear();
vi.clear(); // must be called last
}
// OK, clean up the framer
oy.clear();
s_err.WriteLine("Done.");
output.Seek(0, SeekOrigin.Begin);
if (!skipWavHeader)
{
WriteHeader(output, (int)(output.Length - HEADER_SIZE), vi.rate, (ushort)16, (ushort)vi.channels);
output.Seek(0, SeekOrigin.Begin);
}
return(output);
}
static byte[] convbuffer = new byte[convsize]; // take 8k out of the data segment, not the stack
#endregion Fields
#region Methods
public static void main(String[] arg)
{
//Stream output = File.OpenWrite("output.bin");
var Name = "Output.ogg";
var OutputBuffer = new MemoryStream();
Stream input = null;
//java.io.InputStream input=System.In;
if (arg.Length > 0)
{
try
{
Name = arg[0];
input = File.OpenRead(arg[0]);
}
catch (Exception e)
{
Console.Error.WriteLine(e);
}
}
else
{
throw (new NotImplementedException("aaaa"));
}
if (input == null) throw (new NotImplementedException("bbb"));
var SyncState = new SyncState(); // sync and verify incoming physical bitstream
var StreamState = new StreamState(); // take physical pages, weld into a logical stream of packets
var Page = new Page(); // one Ogg bitstream page. Vorbis packets are inside
var Packet = new Packet(); // one raw packet of data for decode
var Info = new Info(); // struct that stores all the static vorbis bitstream settings
var Comment = new Comment(); // struct that stores all the bitstream user comments
var DspState = new DspState(); // central working state for the packet->PCM decoder
var Block = new Block(DspState); // local working space for packet->PCM decode
byte[] buffer;
int bytes = 0;
// Decode setup
SyncState.Init(); // Now we can read pages
// we repeat if the bitstream is chained
while (true)
{
int eos = 0;
// grab some data at the head of the stream. We want the first page
// (which is guaranteed to be small and only contain the Vorbis
// stream initial header) We need the first page to get the stream
// serialno.
// submit a 4k block to libvorbis' Ogg layer
int index = SyncState.Buffer(4096);
buffer = SyncState.Data;
try
{
bytes = input.Read(buffer, index, 4096);
}
catch (Exception e)
{
Console.Error.WriteLine(e);
return;
}
SyncState.wrote(bytes);
// Get the first page.
int _result = SyncState.PageOut(Page);
if (_result != 1)
{
// have we simply run out of data? If so, we're done.
if (bytes < 4096) break;
Console.WriteLine(bytes + "; " + _result);
//File.WriteAllBytes();
// error case. Must not be Vorbis data
Console.Error.WriteLine("Input does not appear to be an Ogg bitstream.");
return;
}
// Get the serial number and set up the rest of decode.
// serialno first; use it to set up a logical stream
StreamState.Init(Page.serialno());
// extract the initial header from the first page and verify that the
// Ogg bitstream is in fact Vorbis data
// I handle the initial header first instead of just having the code
// read all three Vorbis headers at once because reading the initial
// header is an easy way to identify a Vorbis bitstream and it's
// useful to see that functionality seperated out.
Info.init();
Comment.init();
if (StreamState.pagein(Page) < 0)
{
// error; stream version mismatch perhaps
throw (new Exception("Error reading first page of Ogg bitstream data."));
}
if (StreamState.PacketOut(Packet) != 1)
{
// no page? must not be vorbis
throw (new Exception("Error reading initial header packet."));
}
if (Info.synthesis_headerin(Comment, Packet) < 0)
{
// error case; not a vorbis header
throw (new Exception("This Ogg bitstream does not contain Vorbis audio data."));
}
// At this point, we're sure we're Vorbis. We've set up the logical
// (Ogg) bitstream decoder. Get the comment and codebook headers and
// set up the Vorbis decoder
// The next two packets in order are the comment and codebook headers.
// They're likely large and may span multiple pages. Thus we reead
// and submit data until we get our two pacakets, watching that no
// pages are missing. If a page is missing, error out; losing a
// header page is the only place where missing data is fatal. */
int i = 0;
while (i < 2)
{
while (i < 2)
{
int result = SyncState.PageOut(Page);
if (result == 0)
break; // Need more data
// Don't complain about missing or corrupt data yet. We'll
// catch it at the packet output phase
if (result == 1)
{
StreamState.pagein(Page); // we can ignore any errors here
// as they'll also become apparent
// at packetout
while (i < 2)
{
result = StreamState.PacketOut(Packet);
if (result == 0)
break;
if (result == -1)
{
// Uh oh; data at some point was corrupted or missing!
// We can't tolerate that in a header. Die.
throw(new Exception("Corrupt secondary header. Exiting."));
}
Info.synthesis_headerin(Comment, Packet);
i++;
}
}
}
// no harm in not checking before adding more
index = SyncState.Buffer(4096);
buffer = SyncState.Data;
try
{
bytes = input.Read(buffer, index, 4096);
}
catch (Exception e)
{
throw(new Exception("Exception", e));
}
if (bytes == 0 && i < 2)
{
throw(new Exception("End of file before finding all Vorbis headers!"));
}
SyncState.wrote(bytes);
}
// Throw the comments plus a few lines about the bitstream we're
// decoding
{
byte[][] ptr = Comment.user_comments;
for (int j = 0; j < ptr.Length; j++)
{
if (ptr[j] == null)
break;
Console.Error.WriteLine(Util.InternalEncoding.GetString(ptr[j], 0, ptr[j].Length - 1));
}
Console.Error.WriteLine("\nBitstream is {0} channel, {1}Hz", Info.channels, Info.rate);
Console.Error.WriteLine(
"Encoded by: {0}\n",
Util.InternalEncoding.GetString(Comment.vendor, 0, Comment.vendor.Length - 1));
}
convsize = 4096 / Info.channels;
// OK, got and parsed all three headers. Initialize the Vorbis
// packet->PCM decoder.
DspState.synthesis_init(Info); // central decode state
Block.init(DspState); // local state for most of the decode
// so multiple block decodes can
// proceed in parallel. We could init
// multiple vorbis_block structures
// for vd here
float[][][] _pcm = new float[1][][];
int[] _index = new int[Info.channels];
// The rest is just a straight decode loop until end of stream
while (eos == 0)
{
while (eos == 0)
{
int result = SyncState.PageOut(Page);
if (result == 0)
break; // need more data
if (result == -1)
{ // missing or corrupt data at this page position
Console.Error.WriteLine("Corrupt or missing data in bitstream; continuing...");
}
else
{
StreamState.pagein(Page); // can safely ignore errors at
// this point
while (true)
{
result = StreamState.PacketOut(Packet);
if (result == 0)
break; // need more data
if (result == -1)
{ // missing or corrupt data at this page position
// no reason to complain; already complained above
}
else
{
// we have a packet. Decode it
int samples;
if (Block.synthesis(Packet) == 0)
{ // test for success!
DspState.synthesis_blockin(Block);
}
// **pcm is a multichannel float vector. In stereo, for
// example, pcm[0] is left, and pcm[1] is right. samples is
// the size of each channel. Convert the float values
// (-1.<=range<=1.) to whatever PCM format and write it out
while ((samples = DspState.synthesis_pcmout(_pcm, _index)) > 0)
{
float[][] pcm = _pcm[0];
int bout = (samples < convsize ? samples : convsize);
// convert floats to 16 bit signed ints (host order) and
// interleave
for (i = 0; i < Info.channels; i++)
{
int ptr = i * 2;
//int ptr=i;
int mono = _index[i];
for (int j = 0; j < bout; j++)
{
int val = (int)(pcm[i][mono + j] * 32767.0);
// short val=(short)(pcm[i][mono+j]*32767.);
// int val=(int)Math.round(pcm[i][mono+j]*32767.);
// might as well guard against clipping
if (val > 32767)
{
val = 32767;
}
if (val < -32768)
{
val = -32768;
}
if (val < 0)
val = val | 0x8000;
convbuffer[ptr] = (byte)(val);
convbuffer[ptr + 1] = (byte)(((uint)val) >> 8);
ptr += 2 * (Info.channels);
}
}
// System.out.write(convbuffer, 0, 2*vi.channels*bout);
//throw(new NotImplementedException("ccccccccc"));
OutputBuffer.Write(convbuffer, 0, 2 * Info.channels * bout);
// tell libvorbis how
// many samples we
// actually consumed
DspState.synthesis_read(bout);
}
}
}
if (Page.eos() != 0)
eos = 1;
}
}
if (eos == 0)
{
index = SyncState.Buffer(4096);
buffer = SyncState.Data;
try
{
bytes = input.Read(buffer, index, 4096);
}
catch (Exception e)
{
throw(new Exception("Exception", e));
}
SyncState.wrote(bytes);
if (bytes == 0) eos = 1;
}
}
// clean up this logical bitstream; before exit we see if we're
// followed by another [chained]
StreamState.Clear();
// ogg_page and ogg_packet structs always point to storage in
// libvorbis. They're never freed or manipulated directly
Block.clear();
DspState.clear();
Info.Clear(); // must be called last
}
// OK, clean up the framer
SyncState.Clear();
var WaveStream = new WaveStream();
using (var WaveOutputStream = File.OpenWrite(Name + ".wav"))
{
OutputBuffer.Position = 0;
WaveStream.WriteWave(WaveOutputStream, () =>
{
OutputBuffer.CopyTo(WaveOutputStream);
}, NumberOfChannels: 1, SampleRate: 44100);
}
Console.Error.WriteLine("Done.");
}
public AudioSample OggToWav(Stream ogg, float volume, float pitch)
{
AudioSample sample = new AudioSample();
TextWriter s_err = new StringWriter();
Stream input = null;
MemoryStream output = null;
input = ogg;
output = new MemoryStream();
SyncState oy = new SyncState();
StreamState os = new StreamState();
Page og = new Page();
Packet op = new Packet();
Info vi = new Info();
Comment vc = new Comment();
DspState vd = new DspState();
Block vb = new Block(vd);
byte[] buffer;
int bytes = 0;
oy.init();
while (true)
{
int eos = 0;
int index = oy.buffer(4096);
buffer = oy.data;
try
{
bytes = input.Read(buffer, index, 4096);
}
catch (Exception e)
{
s_err.WriteLine(e);
}
oy.wrote(bytes);
if (oy.pageout(og) != 1)
{
if (bytes < 4096)
{
break;
}
s_err.WriteLine("Input does not appear to be an Ogg bitstream.");
}
os.init(og.serialno());
vi.init();
vc.init();
if (os.pagein(og) < 0)
{
s_err.WriteLine("Error reading first page of Ogg bitstream data.");
}
if (os.packetout(op) != 1)
{
s_err.WriteLine("Error reading initial header packet.");
}
if (vi.synthesis_headerin(vc, op) < 0)
{
s_err.WriteLine("This Ogg bitstream does not contain Vorbis audio data.");
}
int i = 0;
while (i < 2)
{
while (i < 2)
{
int result = oy.pageout(og);
if (result == 0)
{
break;
}
if (result == 1)
{
os.pagein(og);
while (i < 2)
{
result = os.packetout(op);
if (result == 0)
{
break;
}
vi.synthesis_headerin(vc, op);
i++;
}
}
}
index = oy.buffer(4096);
buffer = oy.data;
try
{
bytes = input.Read(buffer, index, 4096);
}
catch (Exception e)
{
s_err.WriteLine(e);
}
oy.wrote(bytes);
}
sample.Channels = vi.channels;
sample.Rate = (int)((float)vi.rate * pitch);
convsize = 4096 / vi.channels;
vd.synthesis_init(vi);
vb.init(vd);
float[][][] _pcm = new float[1][][];
int[] _index = new int[vi.channels];
while (eos == 0)
{
while (eos == 0)
{
int result = oy.pageout(og);
if (result == 0)
{
break;
}
if (result != -1)
{
os.pagein(og);
while (true)
{
result = os.packetout(op);
if (result == 0)
{
break;
}
if (result != -1)
{
int samples;
if (vb.synthesis(op) == 0)
{
vd.synthesis_blockin(vb);
}
while ((samples = vd.synthesis_pcmout(_pcm, _index)) > 0)
{
float[][] pcm = _pcm[0];
int bout = (samples < convsize ? samples : convsize);
for (i = 0; i < vi.channels; i++)
{
int ptr = i * 2;
int mono = _index[i];
for (int j = 0; j < bout; j++)
{
int val = (int)(pcm[i][mono + j] * 32767.0);
if (val > 32767)
{
val = 32767;
}
if (val < -32768)
{
val = -32768;
}
val = (int)((float)val * volume);
if (val < 0)
{
val = val | 0x8000;
}
convbuffer[ptr] = (byte)(val);
convbuffer[ptr + 1] = (byte)((uint)val >> 8);
ptr += 2 * (vi.channels);
}
}
output.Write(convbuffer, 0, 2 * vi.channels * bout);
vd.synthesis_read(bout);
}
}
}
if (og.eos() != 0)
{
eos = 1;
}
}
}
if (eos == 0)
{
index = oy.buffer(4096);
buffer = oy.data;
try
{
bytes = input.Read(buffer, index, 4096);
}
catch (Exception e)
{
s_err.WriteLine(e);
}
oy.wrote(bytes);
if (bytes == 0)
{
eos = 1;
}
}
}
os.clear();
vb.clear();
vd.clear();
vi.clear();
break;
}
oy.clear();
input.Close();
sample.Pcm = output.ToArray();
return(sample);
}
static byte[] convbuffer = new byte[convsize]; // take 8k out of the data segment, not the stack
public static void main(String[] arg)
{
//Stream output = File.OpenWrite("output.bin");
var Name = "Output.ogg";
var OutputBuffer = new MemoryStream();
Stream input = null;
//java.io.InputStream input=System.In;
if (arg.Length > 0)
{
try
{
Name = arg[0];
input = File.OpenRead(arg[0]);
}
catch (Exception e)
{
Console.Error.WriteLine(e);
}
}
else
{
throw (new NotImplementedException("aaaa"));
}
if (input == null)
{
throw (new NotImplementedException("bbb"));
}
var SyncState = new SyncState(); // sync and verify incoming physical bitstream
var StreamState = new StreamState(); // take physical pages, weld into a logical stream of packets
var Page = new Page(); // one Ogg bitstream page. Vorbis packets are inside
var Packet = new Packet(); // one raw packet of data for decode
var Info = new Info(); // struct that stores all the static vorbis bitstream settings
var Comment = new Comment(); // struct that stores all the bitstream user comments
var DspState = new DspState(); // central working state for the packet->PCM decoder
var Block = new Block(DspState); // local working space for packet->PCM decode
byte[] buffer;
int bytes = 0;
// Decode setup
SyncState.Init(); // Now we can read pages
// we repeat if the bitstream is chained
while (true)
{
int eos = 0;
// grab some data at the head of the stream. We want the first page
// (which is guaranteed to be small and only contain the Vorbis
// stream initial header) We need the first page to get the stream
// serialno.
// submit a 4k block to libvorbis' Ogg layer
int index = SyncState.Buffer(4096);
buffer = SyncState.Data;
try
{
bytes = input.Read(buffer, index, 4096);
}
catch (Exception e)
{
Console.Error.WriteLine(e);
return;
}
SyncState.wrote(bytes);
// Get the first page.
int _result = SyncState.PageOut(Page);
if (_result != 1)
{
// have we simply run out of data? If so, we're done.
if (bytes < 4096)
{
break;
}
Console.WriteLine(bytes + "; " + _result);
//File.WriteAllBytes();
// error case. Must not be Vorbis data
Console.Error.WriteLine("Input does not appear to be an Ogg bitstream.");
return;
}
// Get the serial number and set up the rest of decode.
// serialno first; use it to set up a logical stream
StreamState.Init(Page.serialno());
// extract the initial header from the first page and verify that the
// Ogg bitstream is in fact Vorbis data
// I handle the initial header first instead of just having the code
// read all three Vorbis headers at once because reading the initial
// header is an easy way to identify a Vorbis bitstream and it's
// useful to see that functionality seperated out.
Info.init();
Comment.init();
if (StreamState.pagein(Page) < 0)
{
// error; stream version mismatch perhaps
throw (new Exception("Error reading first page of Ogg bitstream data."));
}
if (StreamState.PacketOut(Packet) != 1)
{
// no page? must not be vorbis
throw (new Exception("Error reading initial header packet."));
}
if (Info.synthesis_headerin(Comment, Packet) < 0)
{
// error case; not a vorbis header
throw (new Exception("This Ogg bitstream does not contain Vorbis audio data."));
}
// At this point, we're sure we're Vorbis. We've set up the logical
// (Ogg) bitstream decoder. Get the comment and codebook headers and
// set up the Vorbis decoder
// The next two packets in order are the comment and codebook headers.
// They're likely large and may span multiple pages. Thus we reead
// and submit data until we get our two pacakets, watching that no
// pages are missing. If a page is missing, error out; losing a
// header page is the only place where missing data is fatal. */
int i = 0;
while (i < 2)
{
while (i < 2)
{
int result = SyncState.PageOut(Page);
if (result == 0)
{
break; // Need more data
}
// Don't complain about missing or corrupt data yet. We'll
// catch it at the packet output phase
if (result == 1)
{
StreamState.pagein(Page); // we can ignore any errors here
// as they'll also become apparent
// at packetout
while (i < 2)
{
result = StreamState.PacketOut(Packet);
if (result == 0)
{
break;
}
if (result == -1)
{
// Uh oh; data at some point was corrupted or missing!
// We can't tolerate that in a header. Die.
throw(new Exception("Corrupt secondary header. Exiting."));
}
Info.synthesis_headerin(Comment, Packet);
i++;
}
}
}
// no harm in not checking before adding more
index = SyncState.Buffer(4096);
buffer = SyncState.Data;
try
{
bytes = input.Read(buffer, index, 4096);
}
catch (Exception e)
{
throw(new Exception("Exception", e));
}
if (bytes == 0 && i < 2)
{
throw(new Exception("End of file before finding all Vorbis headers!"));
}
SyncState.wrote(bytes);
}
// Throw the comments plus a few lines about the bitstream we're
// decoding
{
byte[][] ptr = Comment.user_comments;
for (int j = 0; j < ptr.Length; j++)
{
if (ptr[j] == null)
{
break;
}
Console.Error.WriteLine(Util.InternalEncoding.GetString(ptr[j], 0, ptr[j].Length - 1));
}
Console.Error.WriteLine("\nBitstream is {0} channel, {1}Hz", Info.channels, Info.rate);
Console.Error.WriteLine(
"Encoded by: {0}\n",
Util.InternalEncoding.GetString(Comment.vendor, 0, Comment.vendor.Length - 1));
}
convsize = 4096 / Info.channels;
// OK, got and parsed all three headers. Initialize the Vorbis
// packet->PCM decoder.
DspState.synthesis_init(Info); // central decode state
Block.init(DspState); // local state for most of the decode
// so multiple block decodes can
// proceed in parallel. We could init
// multiple vorbis_block structures
// for vd here
float[][][] _pcm = new float[1][][];
int[] _index = new int[Info.channels];
// The rest is just a straight decode loop until end of stream
while (eos == 0)
{
while (eos == 0)
{
int result = SyncState.PageOut(Page);
if (result == 0)
{
break; // need more data
}
if (result == -1)
{ // missing or corrupt data at this page position
Console.Error.WriteLine("Corrupt or missing data in bitstream; continuing...");
}
else
{
StreamState.pagein(Page); // can safely ignore errors at
// this point
while (true)
{
result = StreamState.PacketOut(Packet);
if (result == 0)
{
break; // need more data
}
if (result == -1)
{ // missing or corrupt data at this page position
// no reason to complain; already complained above
}
else
{
// we have a packet. Decode it
int samples;
if (Block.synthesis(Packet) == 0)
{ // test for success!
DspState.synthesis_blockin(Block);
}
// **pcm is a multichannel float vector. In stereo, for
// example, pcm[0] is left, and pcm[1] is right. samples is
// the size of each channel. Convert the float values
// (-1.<=range<=1.) to whatever PCM format and write it out
while ((samples = DspState.synthesis_pcmout(_pcm, _index)) > 0)
{
float[][] pcm = _pcm[0];
int bout = (samples < convsize ? samples : convsize);
// convert floats to 16 bit signed ints (host order) and
// interleave
for (i = 0; i < Info.channels; i++)
{
int ptr = i * 2;
//int ptr=i;
int mono = _index[i];
for (int j = 0; j < bout; j++)
{
int val = (int)(pcm[i][mono + j] * 32767.0);
// short val=(short)(pcm[i][mono+j]*32767.);
// int val=(int)Math.round(pcm[i][mono+j]*32767.);
// might as well guard against clipping
if (val > 32767)
{
val = 32767;
}
if (val < -32768)
{
val = -32768;
}
if (val < 0)
{
val = val | 0x8000;
}
convbuffer[ptr] = (byte)(val);
convbuffer[ptr + 1] = (byte)(((uint)val) >> 8);
ptr += 2 * (Info.channels);
}
}
// System.out.write(convbuffer, 0, 2*vi.channels*bout);
//throw(new NotImplementedException("ccccccccc"));
OutputBuffer.Write(convbuffer, 0, 2 * Info.channels * bout);
// tell libvorbis how
// many samples we
// actually consumed
DspState.synthesis_read(bout);
}
}
}
if (Page.eos() != 0)
{
eos = 1;
}
}
}
if (eos == 0)
{
index = SyncState.Buffer(4096);
buffer = SyncState.Data;
try
{
bytes = input.Read(buffer, index, 4096);
}
catch (Exception e)
{
throw(new Exception("Exception", e));
}
SyncState.wrote(bytes);
if (bytes == 0)
{
eos = 1;
}
}
}
// clean up this logical bitstream; before exit we see if we're
// followed by another [chained]
StreamState.Clear();
// ogg_page and ogg_packet structs always point to storage in
// libvorbis. They're never freed or manipulated directly
Block.clear();
DspState.clear();
Info.Clear(); // must be called last
}
// OK, clean up the framer
SyncState.Clear();
var WaveStream = new WaveStream();
using (var WaveOutputStream = File.OpenWrite(Name + ".wav"))
{
OutputBuffer.Position = 0;
WaveStream.WriteWave(WaveOutputStream, () =>
{
OutputBuffer.CopyTo(WaveOutputStream);
}, NumberOfChannels: 1, SampleRate: 44100);
}
Console.Error.WriteLine("Done.");
}
