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Added license and a README.

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482 COPYING
@@ -0,0 +1,482 @@
+ GNU LIBRARY GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1991 Free Software Foundation, Inc.
+ 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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+That's all there is to it!
View
6 ChangeLog
@@ -1,5 +1,9 @@
+2002-23-05 Mark Crichton <crichton@gimp.org>
+
+ * README, COPYING: added
+
2002-17-05 Mark Crichton <crichton@gimp.org>
* csogg,csvorbis,OggDecoder: added Makefile
* Makefile: added Makefile
- * ChangeLog: started ChangeLog
+ * ChangeLog: started ChangeLog
View
684 OggDecoder/OggDecoder.cs
@@ -1,342 +1,342 @@
-using System;
-using System.IO;
-using csogg;
-using csvorbis;
-
-namespace OggDecoder
-{
- /// <summary>
- /// Ogg Vorbis decoder test application.
- /// </summary>
- class Decoder
- {
-
- static int convsize=4096*2;
- static byte[] convbuffer=new byte[convsize]; // take 8k out of the data segment, not the stack
-
- /// <summary>
- /// The main entry point for the application.
- /// </summary>
- [STAThread]
- static void Main(string[] args)
- {
- TextWriter s_err = Console.Error;
- FileStream input = null, output = null;
-
- if(args.Length == 2)
- {
- try
- {
- input = new FileStream(args[0], FileMode.Open);
- output = new FileStream(args[1], FileMode.OpenOrCreate);
- }
- catch(Exception e)
- {
- s_err.WriteLine(e);
- }
- }
- else
- {
- return;
- }
-
- 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.");
-
- // Close some files
- input.Close();
- output.Close();
- }
- }
-}
-
+using System;
+using System.IO;
+using csogg;
+using csvorbis;
+
+namespace OggDecoder
+{
+ /// <summary>
+ /// Ogg Vorbis decoder test application.
+ /// </summary>
+ class Decoder
+ {
+
+ static int convsize=4096*2;
+ static byte[] convbuffer=new byte[convsize]; // take 8k out of the data segment, not the stack
+
+ /// <summary>
+ /// The main entry point for the application.
+ /// </summary>
+ [STAThread]
+ static void Main(string[] args)
+ {
+ TextWriter s_err = Console.Error;
+ FileStream input = null, output = null;
+
+ if(args.Length == 2)
+ {
+ try
+ {
+ input = new FileStream(args[0], FileMode.Open);
+ output = new FileStream(args[1], FileMode.OpenOrCreate);
+ }
+ catch(Exception e)
+ {
+ s_err.WriteLine(e);
+ }
+ }
+ else
+ {
+ return;
+ }
+
+ 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.");
+
+ // Close some files
+ input.Close();
+ output.Close();
+ }
+ }
+}
+
View
34 README
@@ -0,0 +1,34 @@
+General Information
+===================
+
+This is Vorbis# version 0.1.
+
+Vorbis# is a C# OggVorbis decoder written purely in C#. It is based off of
+the Java version (Jorbis v0.0.12).
+
+The code can compile with Microsoft's .NET Framework or the Mono project's
+C# compiler mcs. The Makefiles can handle either ('make windows' for compiling
+under Win32 and csc, and 'make unix' to compile under mcs).
+
+There is also a project file for use with VS.NET.
+
+The compile will produce three files:
+
+csogg.dll
+csvorbis.dll
+OggDecoder.exe
+
+OggDecoder takes two arguments, the first is a valid bitstream, the other
+is a file where 16 bit PCM data is written to.
+
+If you use ESD, a great example is:
+
+mono OggDecoder.exe my.ogg /dev/stdout | esdcat /dev/stdin
+
+This code has been tested extensively with the mono JIT. The MS will work as
+well, but you're on your own to use it to play sound in realtime (i.e., write
+your own audio backend). Pnet is untested completely. Don't even try this
+with Rotor, unless you have a lot of time on your hands.
+
+<crichton@gimp.org>
+
View
BIN  csvorbis.suo
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