private static int WriteVideoStreamHeader(RiffWriter rw, VideoStreamInfo vsi)
{
rw.BeginChunk(AviDemux.ID_strh);
int offset = (int)rw.binaryWriter.Seek(0, SeekOrigin.Current);
var bw = rw.binaryWriter;
bw.Write(AviDemux.FCC_vids);
bw.Write(vsi.codecFourCC);
bw.Write((int)0); // dwFlags
bw.Write((short)0); // wPriority
bw.Write((short)0); // wLanguage
bw.Write((int)0); // dwInitialFrames
int scale, rate;
FindScaleAndRate(out scale, out rate, vsi.framerate);
bw.Write(scale); // dwScale
bw.Write(rate); // dwRate
bw.Write((int)0); // dwStart
bw.Write(vsi.frameCount); // dwLength. that's how many frames will be in this RIFF element, written over later
bw.Write((int)0); // dwSuggestedBufferSize, not suggesting any value
bw.Write((int)-1); // dwQuality = -1 meaning "default quality"
bw.Write((int)0); // dwSampleSize = 0 for video
bw.Write((short)0);
bw.Write((short)0);
bw.Write((short)vsi.width);
bw.Write((short)vsi.height);
rw.EndChunk();
return(offset);
}
private static int WriteDmlhHeader(RiffWriter rw, int totalFrames)
{
rw.BeginChunk(AviDemux.ID_dmlh);
int offset = (int)rw.binaryWriter.Seek(0, SeekOrigin.Current);
rw.binaryWriter.Write(totalFrames); // will be written over later
rw.EndChunk();
return(offset);
}
public override void Init(Stream dstStream, VideoStreamInfo videoStreamInfo, AudioStreamInfo audioStreamInfo)
{
if (dstStream == null || videoStreamInfo == null)
{
throw new ArgumentException("At least destination stream and video stream info is needed");
}
base.Init(dstStream, videoStreamInfo, audioStreamInfo);
usingMultipleRiffs = false;
totalFramesOld = 0;
totalFrames = 0;
totalSamples = 0;
writer = new RiffWriter(dstStream);
writer.BeginRiff(AviDemux.ID_AVI_);
writer.BeginList(AviDemux.ID_hdrl);
// main header
offsets.avih = WriteMainHeader(writer, videoStreamInfo, hasAudioStream);
// video stream header
writer.BeginList(AviDemux.ID_strl);
offsets.videoStrh = WriteVideoStreamHeader(writer, videoStreamInfo);
WriteVideoFormatHeader(writer, videoStreamInfo);
offsets.videoIndx = WriteDummySuperIndex(writer, AviDemux.ID_00dc, maxSuperindexEntries);
videoSuperIndexEntryCount = 0;
writer.EndList(); // end of strl
videoIndex = new AviStreamIndex();
videoIndex.streamId = AviDemux.ID_00dc;
if (hasAudioStream)
{
// audio stream header
writer.BeginList(AviDemux.ID_strl);
offsets.audioStrh = WriteAudioStreamHeader(writer, audioStreamInfo);
WriteAudioFormatHeader(writer, audioStreamInfo);
offsets.audioIndx = WriteDummySuperIndex(writer, AviDemux.ID_01wb, maxSuperindexEntries);
audioSuperIndexEntryCount = 0;
writer.EndList(); // end of strl
audioIndex = new AviStreamIndex();
audioIndex.streamId = AviDemux.ID_01wb;
}
// odml header
writer.BeginList(AviDemux.ID_odml);
offsets.dmlh = WriteDmlhHeader(writer, videoStreamInfo.frameCount);
writer.EndList();
writer.EndList(); // end of hdrl
writer.BeginList(AviDemux.ID_movi);
offsets.indexBase = writer.binaryWriter.Seek(0, SeekOrigin.Current);
}
public override void Init(Stream dstStream, VideoStreamInfo videoStreamInfo, AudioStreamInfo audioStreamInfo)
{
if (dstStream == null || videoStreamInfo == null) {
throw new ArgumentException ("At least destination stream and video stream info is needed");
}
base.Init (dstStream, videoStreamInfo, audioStreamInfo);
usingMultipleRiffs = false;
totalFramesOld = 0;
totalFrames = 0;
totalSamples = 0;
writer = new RiffWriter (dstStream);
writer.BeginRiff (AviDemux.ID_AVI_);
writer.BeginList (AviDemux.ID_hdrl);
// main header
offsets.avih = WriteMainHeader (writer, videoStreamInfo, hasAudioStream);
// video stream header
writer.BeginList (AviDemux.ID_strl);
offsets.videoStrh = WriteVideoStreamHeader (writer, videoStreamInfo);
WriteVideoFormatHeader (writer, videoStreamInfo);
offsets.videoIndx = WriteDummySuperIndex (writer, AviDemux.ID_00dc, maxSuperindexEntries);
videoSuperIndexEntryCount = 0;
writer.EndList (); // end of strl
videoIndex = new AviStreamIndex ();
videoIndex.streamId = AviDemux.ID_00dc;
if (hasAudioStream) {
// audio stream header
writer.BeginList (AviDemux.ID_strl);
offsets.audioStrh = WriteAudioStreamHeader (writer, audioStreamInfo);
WriteAudioFormatHeader (writer, audioStreamInfo);
offsets.audioIndx = WriteDummySuperIndex (writer, AviDemux.ID_01wb, maxSuperindexEntries);
audioSuperIndexEntryCount = 0;
writer.EndList (); // end of strl
audioIndex = new AviStreamIndex ();
audioIndex.streamId = AviDemux.ID_01wb;
}
// odml header
writer.BeginList (AviDemux.ID_odml);
offsets.dmlh = WriteDmlhHeader (writer, videoStreamInfo.frameCount);
writer.EndList ();
writer.EndList (); // end of hdrl
writer.BeginList (AviDemux.ID_movi);
offsets.indexBase = writer.binaryWriter.Seek (0, SeekOrigin.Current);
}
private static void WriteChunkIndex(RiffWriter rw, AviStreamIndex index, int superIndexChunkOffset, ref int superIndexEntryCount, long indexBaseOffset, int maxSuperindexEntries)
{
var bw = rw.binaryWriter;
// the offset where this index will be written
long streamIndexOffset = bw.Seek(0, SeekOrigin.Current);
// update stream superindex
superIndexEntryCount++;
if (superIndexEntryCount > maxSuperindexEntries)
{
throw new MpException("Not enough space was reserved for superindex. Please increase maxSuperindexEntries");
}
bw.Seek(superIndexChunkOffset + 1 * 4, SeekOrigin.Begin);
bw.Write(superIndexEntryCount); // overwrite nEntriesInUse
bw.Seek(superIndexChunkOffset + 6 * 4 + (superIndexEntryCount - 1) * 16, SeekOrigin.Begin);
bw.Write(streamIndexOffset);
bw.Write(32 + 8 * index.entries.Count); // dwSize
bw.Write(index.entries.Count); // dwDuration in stream ticks. @todo this is OK only for video, for audio stream this should be ???
// write stream chunk index
// @xxx MSDN suggests not seeking BaseStream when using BinaryWriter, but there are no Seek(long)
// in BinaryWriter. According to this forum post, BinaryWriter.Seek is just a wrapper
// to BinaryWriter.BaseStream.Seek, so all should be ok.
// http://www.pcreview.co.uk/forums/binarywriter-seek-vs-binarywriter-basestream-seek-t1223754.html
bw.BaseStream.Seek(streamIndexOffset, SeekOrigin.Begin);
rw.BeginChunk((RiffParser.ToFourCC("ix__") & 0x0000FFFF) | ((index.streamId << 16) & 0xFFFF0000));
bw.Write((short)2); // wLongsPerEntry is always 2 here
bw.Write((byte)0); // bIndexSubType is always 0 here
bw.Write((byte)AviStreamIndex.Type.CHUNKS); // bIndexType = AVI_INDEX_OF_CHUNKS
bw.Write(index.entries.Count); // nEntriesInUse.
bw.Write(index.streamId); // dwChunkId ("##dc" and similar)
bw.Write(indexBaseOffset); // qwBaseOffset
bw.Write((int)0); // dwReserved3
foreach (var entry in index.entries)
{
long offset = entry.chunkOffset - indexBaseOffset;
if (offset > int.MaxValue)
{
throw new MpException("Internal error. Can't write index, because chunk offset won't fit into 31 bits: " + offset);
}
bw.Write((uint)offset); // bit31==0 indicating that this is a keyframe
bw.Write(entry.chunkLength);
}
rw.EndChunk();
index.globalOffset += index.entries.Count;
index.entries.Clear();
}
/// <summary>
/// Write the RIFF.
/// </summary>
/// <param name="w">The writer.</param>
public override void Write(FileWriter w)
{
//Init.
using (RiffWriter rw = new RiffWriter(w.BaseStream)) {
//Init file.
rw.InitFile("WAVE");
//Format block.
rw.StartChunk("fmt ");
rw.Write((ushort)1);
rw.Write((ushort)Audio.Channels.Count);
rw.Write(SampleRate);
uint bitsPerSample = Audio.EncodingType.Equals(typeof(PCM16)) ? 16u : 8u;
rw.Write((uint)(SampleRate * Audio.Channels.Count * (bitsPerSample / 8)));
rw.Write((ushort)(bitsPerSample / 8 * Audio.Channels.Count));
rw.Write((ushort)bitsPerSample);
rw.EndChunk();
//Sample block.
if (Loops)
{
rw.StartChunk("smpl");
rw.Write(new uint[2]);
rw.Write((uint)(1d / SampleRate * 1000000000));
rw.Write((uint)60);
rw.Write(new uint[3]);
rw.Write((uint)1);
rw.Write(new uint[3]);
rw.Write(LoopStart /* * bitsPerSample / 8*/);
rw.Write(LoopEnd /* * bitsPerSample / 8*/);
rw.Write((ulong)0);
rw.EndChunk();
}
//Data block.
Audio.ChangeBlockSize((int)bitsPerSample / 8);
rw.StartChunk("data");
w.Position = rw.Position;
Audio.Write(w);
rw.Position = w.Position;
while (rw.Position % 2 != 0)
{
rw.Write((byte)0);
}
rw.EndChunk();
//Close file.
rw.CloseFile();
Audio.ChangeBlockSize(-1);
}
}
private static void WriteAudioFormatHeader(RiffWriter rw, AudioStreamInfo asi)
{
rw.BeginChunk(AviDemux.ID_strf);
var bw = rw.binaryWriter;
bw.Write((ushort)asi.audioFormat); // wFormatTag
bw.Write((short)asi.channels); // nChannels
bw.Write(asi.sampleRate); // nSamplesPerSec
bw.Write(asi.sampleRate * asi.sampleSize * asi.channels); // nAvgBytesPerSec @xxx true for PCM audio only, but this is a "soft" property
bw.Write((short)asi.sampleSize); // nBlockAlign
bw.Write((short)(8 * asi.sampleSize / asi.channels)); // wBitsPerSample
bw.Write((short)0); // cbSize. no extra coded info
rw.EndChunk();
}
private static int WriteDummySuperIndex(RiffWriter rw, uint streamId, int entriesToReserve)
{
rw.BeginChunk(AviDemux.ID_indx);
int offset = (int)rw.binaryWriter.Seek(0, SeekOrigin.Current);
var bw = rw.binaryWriter;
bw.Write((short)4); // wLongsPerEntry is always 4 for super index
bw.Write((byte)0); // bIndexSubType is always 0 for super index
bw.Write((byte)AviStreamIndex.Type.SUPERINDEX); // bIndexType = AVI_INDEX_OF_INDEXES
bw.Write((int)0); // nEntriesInUse. this'll be updated later!
bw.Write(streamId); // dwChunkId ("##dc" and similar)
// write 3 reserved UINTs and reserve some space for entries
bw.Write(new byte[4 * 3 + entriesToReserve * 16]);
rw.EndChunk();
return(offset);
}
private static void WriteVideoFormatHeader(RiffWriter rw, VideoStreamInfo vsi)
{
rw.BeginChunk(AviDemux.ID_strf);
var bw = rw.binaryWriter;
bw.Write((int)40); // biSize
bw.Write(vsi.width); // biWidth
bw.Write(vsi.height); // biHeight
bw.Write((short)1); // biPlanes
bw.Write((short)vsi.bitsPerPixel);
bw.Write(vsi.codecFourCC); // biCompression
bw.Write(vsi.width * vsi.height * vsi.bitsPerPixel / 8); // biSizeImage
bw.Write((int)0); // biXPelsPerMeter
bw.Write((int)0); // biYPelsPerMeter
bw.Write((int)0); // biClrUsed
bw.Write((int)0); // biClrImportant
rw.EndChunk();
}
private static int WriteMainHeader(RiffWriter rw, VideoStreamInfo vsi, bool hasAudioStream)
{
rw.BeginChunk(AviDemux.ID_avih);
int offset = (int)rw.binaryWriter.Seek(0, SeekOrigin.Current);
var bw = rw.binaryWriter;
bw.Write(Mathf.RoundToInt(1000000f / vsi.framerate)); // swMicroSecPerFrame
bw.Write((int)0); // dwMaxBytesPerSec
bw.Write((int)0); // dwPaddingGranularity
bw.Write((int)(AVIMainHeader.AVIF_HASINDEX | AVIMainHeader.AVIF_MUSTUSEINDEX)); // dwFlags. Maybe use AVIMainHeader.AVIF_MUSTUSEINDEX too?
bw.Write(vsi.frameCount); // dwTotalFrames. this will be written over later!
bw.Write((int)0); // dwInitialFrames
bw.Write(hasAudioStream ? 2 : 1);
bw.Write((int)0); // dwSuggestedBufferSize, not suggesting any value
bw.Write(vsi.width);
bw.Write(vsi.height);
bw.Write((long)0); // dwReserver0 and dwReserver1
bw.Write((long)0); // dwReserver2 and dwReserver3
rw.EndChunk();
return(offset);
}
private static int WriteAudioStreamHeader(RiffWriter rw, AudioStreamInfo asi)
{
rw.BeginChunk(AviDemux.ID_strh);
int offset = (int)rw.binaryWriter.Seek(0, SeekOrigin.Current);
var bw = rw.binaryWriter;
bw.Write(AviDemux.FCC_auds);
bw.Write(asi.codecFourCC);
bw.Write((int)0); // dwFlags
bw.Write((short)0); // wPriority
bw.Write((short)0); // wLanguage
bw.Write((int)0); // dwInitialFrames
bw.Write((int)1); // dwScale
bw.Write(asi.sampleRate); // dwRate @xxx This is true for PCM audio only!
bw.Write((int)0); // dwStart
bw.Write(asi.sampleCount); // dwLength. will be written over later
bw.Write((int)0); // dwSuggestedBufferSize, not suggesting it
bw.Write((int)-1); // dwQuality = -1 meaning "default quality"
bw.Write(asi.sampleSize); // dwSampleSize
bw.Write((long)0); // rcFrame
rw.EndChunk();
return(offset);
}
private static int WriteAudioStreamHeader(RiffWriter rw, AudioStreamInfo asi)
{
rw.BeginChunk (AviDemux.ID_strh);
int offset = (int)rw.binaryWriter.Seek (0, SeekOrigin.Current);
var bw = rw.binaryWriter;
bw.Write (AviDemux.FCC_auds);
bw.Write (asi.codecFourCC);
bw.Write ((int)0); // dwFlags
bw.Write ((short)0); // wPriority
bw.Write ((short)0); // wLanguage
bw.Write ((int)0); // dwInitialFrames
bw.Write ((int)1); // dwScale
bw.Write (asi.sampleRate); // dwRate @xxx This is true for PCM audio only!
bw.Write ((int)0); // dwStart
bw.Write (asi.sampleCount); // dwLength. will be written over later
bw.Write ((int)0); // dwSuggestedBufferSize, not suggesting it
bw.Write ((int)-1); // dwQuality = -1 meaning "default quality"
bw.Write (asi.sampleSize); // dwSampleSize
bw.Write ((long)0); // rcFrame
rw.EndChunk ();
return offset;
}
private static int WriteDmlhHeader(RiffWriter rw, int totalFrames)
{
rw.BeginChunk (AviDemux.ID_dmlh);
int offset = (int)rw.binaryWriter.Seek (0, SeekOrigin.Current);
rw.binaryWriter.Write (totalFrames); // will be written over later
rw.EndChunk ();
return offset;
}
private static int WriteDummySuperIndex(RiffWriter rw, uint streamId, int entriesToReserve)
{
rw.BeginChunk (AviDemux.ID_indx);
int offset = (int)rw.binaryWriter.Seek (0, SeekOrigin.Current);
var bw = rw.binaryWriter;
bw.Write ((short)4); // wLongsPerEntry is always 4 for super index
bw.Write ((byte)0); // bIndexSubType is always 0 for super index
bw.Write ((byte)AviStreamIndex.Type.SUPERINDEX); // bIndexType = AVI_INDEX_OF_INDEXES
bw.Write ((int)0); // nEntriesInUse. this'll be updated later!
bw.Write (streamId); // dwChunkId ("##dc" and similar)
// write 3 reserved UINTs and reserve some space for entries
bw.Write (new byte[4 * 3 + entriesToReserve * 16]);
rw.EndChunk ();
return offset;
}
/// <summary>
/// Write the file.
/// </summary>
/// <param name="w2">The file writer.</param>
public override void Write(FileWriter w2)
{
//Use a RIFF writer.
using (RiffWriter w = new RiffWriter(w2.BaseStream)) {
//Init file.
w.InitFile("DLS ");
//Instrument count.
w.StartChunk("colh");
w.Write((uint)Instruments.Count);
w.EndChunk();
//Instruments.
w.StartListChunk("lins");
foreach (var inst in Instruments)
{
w.StartListChunk("ins ");
w.StartChunk("insh");
w.Write((uint)inst.Regions.Count);
w.Write(inst.BankId);
w.Write(inst.InstrumentId);
w.EndChunk();
w.StartListChunk("lrgn");
foreach (Region r in inst.Regions)
{
w.StartListChunk("rgn2");
w.StartChunk("rgnh");
w.Write(r.NoteLow);
w.Write(r.NoteHigh);
w.Write(r.VelocityLow);
w.Write(r.VelocityHigh);
w.Write((ushort)(r.DoublePlayback ? 1 : 0));
w.Write((ushort)r.KeyGroup);
w.Write(r.Layer);
w.EndChunk();
w.StartChunk("wsmp");
w.Write((uint)0x14);
w.Write((ushort)r.RootNote);
w.Write(r.Tuning);
w.Write(r.Gain);
uint flags = 0;
if (r.NoTruncation)
{
flags |= 0b1;
}
if (r.NoCompression)
{
flags |= 0b10;
}
w.Write(flags);
w.Write((uint)(r.Loops ? 1 : 0));
if (r.Loops)
{
w.Write((uint)0x10);
w.Write((uint)(r.LoopAndRelease ? 1 : 0));
w.Write(r.LoopStart);
w.Write(r.LoopLength);
}
w.EndChunk();
w.StartChunk("wlnk");
ushort flg = 0;
if (r.PhaseMaster)
{
flg |= 0b1;
}
if (r.MultiChannel)
{
flg |= 0b10;
}
w.Write(flg);
w.Write(r.PhaseGroup);
w.Write(r.ChannelFlags);
w.Write(r.WaveId);
w.EndChunk();
w.StartListChunk("lar2");
foreach (var a in r.Articulators)
{
w.StartChunk("art2");
w.Write((uint)8);
w.Write((uint)a.Connections.Count);
foreach (var c in a.Connections)
{
w.Write((ushort)c.SourceConnection);
w.Write(c.ControlConnection);
w.Write((ushort)c.DestinationConnection);
w.Write((ushort)c.TransformConnection);
w.Write(c.Scale);
}
w.EndChunk();
}
w.EndChunk();
w.EndChunk();
}
w.EndChunk();
if (inst.Name != "")
{
w.StartListChunk("INFO");
w.StartChunk("INAM");
w.Write(inst.Name.ToCharArray());
w.Write("\0".ToCharArray());
int len = inst.Name.Length + 1;
while (len % 4 != 0)
{
w.Write((byte)0);
len++;
}
w.EndChunk();
w.EndChunk();
}
w.EndChunk();
}
w.EndChunk();
//Pointer table initializing.
w.StartChunk("ptbl");
w.Write((uint)8);
w.Write((uint)Waves.Count);
long ptblStart = w.BaseStream.Position;
w.Write(new byte[Waves.Count * 4]);
w.EndChunk();
//Write waves.
w.StartListChunk("wvpl");
long waveTableStart = w.BaseStream.Position;
int waveNum = 0;
foreach (var wav in Waves)
{
long wBak = w.BaseStream.Position;
w.BaseStream.Position = ptblStart + waveNum++ *4;
w.Write((uint)(wBak - waveTableStart));
w.BaseStream.Position = wBak;
w.WriteWave(wav);
}
w.EndChunk();
//Write info.
w.StartListChunk("INFO");
w.StartChunk("INAM");
w.Write("Instrument Set".ToCharArray());
w.EndChunk();
w.EndChunk();
//Close file.
w.CloseFile();
}
}
private static int WriteMainHeader(RiffWriter rw, VideoStreamInfo vsi, bool hasAudioStream)
{
rw.BeginChunk (AviDemux.ID_avih);
int offset = (int)rw.binaryWriter.Seek (0, SeekOrigin.Current);
var bw = rw.binaryWriter;
bw.Write (Mathf.RoundToInt (1000000f / vsi.framerate)); // swMicroSecPerFrame
bw.Write ((int)0); // dwMaxBytesPerSec
bw.Write ((int)0); // dwPaddingGranularity
bw.Write ((int)(AVIMainHeader.AVIF_HASINDEX | AVIMainHeader.AVIF_MUSTUSEINDEX)); // dwFlags. Maybe use AVIMainHeader.AVIF_MUSTUSEINDEX too?
bw.Write (vsi.frameCount); // dwTotalFrames. this will be written over later!
bw.Write ((int)0); // dwInitialFrames
bw.Write (hasAudioStream ? 2 : 1);
bw.Write ((int)0); // dwSuggestedBufferSize, not suggesting any value
bw.Write (vsi.width);
bw.Write (vsi.height);
bw.Write ((long)0); // dwReserver0 and dwReserver1
bw.Write ((long)0); // dwReserver2 and dwReserver3
rw.EndChunk ();
return offset;
}
private static void WriteVideoFormatHeader(RiffWriter rw, VideoStreamInfo vsi)
{
rw.BeginChunk (AviDemux.ID_strf);
var bw = rw.binaryWriter;
bw.Write ((int)40); // biSize
bw.Write (vsi.width); // biWidth
bw.Write (vsi.height); // biHeight
bw.Write ((short)1); // biPlanes
bw.Write ((short)vsi.bitsPerPixel);
bw.Write (vsi.codecFourCC); // biCompression
bw.Write (vsi.width * vsi.height * vsi.bitsPerPixel / 8); // biSizeImage
bw.Write ((int)0); // biXPelsPerMeter
bw.Write ((int)0); // biYPelsPerMeter
bw.Write ((int)0); // biClrUsed
bw.Write ((int)0); // biClrImportant
rw.EndChunk ();
}
private static void WriteAudioFormatHeader(RiffWriter rw, AudioStreamInfo asi)
{
rw.BeginChunk (AviDemux.ID_strf);
var bw = rw.binaryWriter;
bw.Write ((ushort)asi.audioFormat); // wFormatTag
bw.Write ((short)asi.channels); // nChannels
bw.Write (asi.sampleRate); // nSamplesPerSec
bw.Write (asi.sampleRate * asi.sampleSize * asi.channels); // nAvgBytesPerSec @xxx true for PCM audio only, but this is a "soft" property
bw.Write ((short)asi.sampleSize); // nBlockAlign
bw.Write ((short)(8 * asi.sampleSize / asi.channels)); // wBitsPerSample
bw.Write ((short)0); // cbSize. no extra coded info
rw.EndChunk ();
}
private static void WriteChunkIndex(RiffWriter rw, AviStreamIndex index, int superIndexChunkOffset, ref int superIndexEntryCount, long indexBaseOffset, int maxSuperindexEntries)
{
var bw = rw.binaryWriter;
// the offset where this index will be written
long streamIndexOffset = bw.Seek (0, SeekOrigin.Current);
// update stream superindex
superIndexEntryCount++;
if (superIndexEntryCount > maxSuperindexEntries) {
throw new MpException ("Not enough space was reserved for superindex. Please increase maxSuperindexEntries");
}
bw.Seek (superIndexChunkOffset + 1 * 4, SeekOrigin.Begin);
bw.Write (superIndexEntryCount); // overwrite nEntriesInUse
bw.Seek (superIndexChunkOffset + 6 * 4 + (superIndexEntryCount - 1) * 16, SeekOrigin.Begin);
bw.Write (streamIndexOffset);
bw.Write (32 + 8 * index.entries.Count); // dwSize
bw.Write (index.entries.Count); // dwDuration in stream ticks. @todo this is OK only for video, for audio stream this should be ???
// write stream chunk index
// @xxx MSDN suggests not seeking BaseStream when using BinaryWriter, but there are no Seek(long)
// in BinaryWriter. According to this forum post, BinaryWriter.Seek is just a wrapper
// to BinaryWriter.BaseStream.Seek, so all should be ok.
// http://www.pcreview.co.uk/forums/binarywriter-seek-vs-binarywriter-basestream-seek-t1223754.html
bw.BaseStream.Seek (streamIndexOffset, SeekOrigin.Begin);
rw.BeginChunk ((RiffParser.ToFourCC ("ix__") & 0x0000FFFF) | ((index.streamId << 16) & 0xFFFF0000));
bw.Write ((short)2); // wLongsPerEntry is always 2 here
bw.Write ((byte)0); // bIndexSubType is always 0 here
bw.Write ((byte)AviStreamIndex.Type.CHUNKS); // bIndexType = AVI_INDEX_OF_CHUNKS
bw.Write (index.entries.Count); // nEntriesInUse.
bw.Write (index.streamId); // dwChunkId ("##dc" and similar)
bw.Write (indexBaseOffset); // qwBaseOffset
bw.Write ((int)0); // dwReserved3
foreach (var entry in index.entries) {
long offset = entry.chunkOffset - indexBaseOffset;
if (offset > int.MaxValue) {
throw new MpException ("Internal error. Can't write index, because chunk offset won't fit into 31 bits: " + offset);
}
bw.Write ((uint)offset); // bit31==0 indicating that this is a keyframe
bw.Write (entry.chunkLength);
}
rw.EndChunk ();
index.globalOffset += index.entries.Count;
index.entries.Clear ();
}
private void bgWorker_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
{
const int COPY_LEN = 50 * 1024;
BackgroundWorker worker = sender as BackgroundWorker;
string[] files = (string[])e.Argument;
try {
using (RiffReader rr = new RiffReader(files[0]))
using (RiffWriter rw = new RiffWriter(files[1])) {
// 読み取りファイル解析
bool b = rr.Parse();
if (!b)
{
e.Result = -2;
return;
}
WaveFormatEx wf = rr.WaveFormat;
// 拡張ヘッダーを無効化できる条件
if (wf.Channels <= 2 && wf.Extensible && wf.BitsPerSample != 32)
{
wf.Extensible = false;
wf.FormatTag = WaveFormatTag.PCM;
}
// ヘッダーの書き出し
b = rw.WriteHeader(wf);
if (!b)
{
e.Result = -1;
return;
}
// ループ回数を計算。進捗にも使う
long max = rr.Length / COPY_LEN;
if ((rr.Length % COPY_LEN) > 0)
{
max++;
}
for (long i = 0; i < max; i++)
{
byte[] arr = rr.Read8(COPY_LEN);
if (!rw.WriteStream8(arr))
{
e.Result = -1;
return;
}
int percentage = (int)((i + 1) * 100 / max);
worker.ReportProgress(percentage);
}
if (!rw.WriteFinalize())
{
return;
}
}
} catch {
// エラー
e.Result = -3;
return;
}
e.Result = 0;
}
/// <summary>
/// Write the file.
/// </summary>
/// <param name="w2">The writer.</param>
public override void Write(FileWriter w2)
{
//Use a RIFF writer.
using (RiffWriter w = new RiffWriter(w2.BaseStream)) {
//Start file.
w.InitFile("sfbk");
//Start INFO.
w.StartListChunk("INFO");
//Version.
w.StartChunk("ifil");
w.Write((ushort)2);
w.Write((ushort)1);
w.EndChunk();
//Sound engine.
w.StartChunk("isng");
w.WriteNullTerminated(SoundEngine);
w.Align(2);
w.EndChunk();
//Bank name.
w.StartChunk("INAM");
w.WriteNullTerminated(BankName);
w.Align(2);
w.EndChunk();
//ROM name.
if (!RomName.Equals(""))
{
w.StartChunk("irom");
w.WriteNullTerminated(RomName);
w.Align(2);
w.EndChunk();
}
//ROM version.
if (RomVersion != null)
{
w.StartChunk("iver");
w.Write(RomVersion.Item1);
w.Write(RomVersion.Item2);
w.EndChunk();
}
//Creation date.
if (!CreationDate.Equals(""))
{
w.StartChunk("ICRD");
w.WriteNullTerminated(CreationDate);
w.Align(2);
w.EndChunk();
}
//Sound designer.
if (!SoundDesigner.Equals(""))
{
w.StartChunk("IENG");
w.WriteNullTerminated(SoundDesigner);
w.Align(2);
w.EndChunk();
}
//Product.
if (!Product.Equals(""))
{
w.StartChunk("IPRD");
w.WriteNullTerminated(Product);
w.Align(2);
w.EndChunk();
}
//Copyright.
if (!Copyright.Equals(""))
{
w.StartChunk("ICOP");
w.WriteNullTerminated(Copyright);
w.Align(2);
w.EndChunk();
}
//Comment.
if (!Comment.Equals(""))
{
w.StartChunk("ICMT");
w.WriteNullTerminated(Comment);
w.Align(2);
w.EndChunk();
}
//Tools.
if (!Tools.Equals(""))
{
w.StartChunk("ISFT");
w.WriteNullTerminated(Tools);
w.Align(2);
w.EndChunk();
}
//End INFO.
w.EndChunk();
//Sample block.
w.StartListChunk("sdta");
w.StartChunk("smpl");
long waveTableStart = w.Position;
Dictionary <SampleItem, long> samplePositions = new Dictionary <SampleItem, long>();
foreach (var s in Samples)
{
samplePositions.Add(s, w.Position);
w.Write(new short[s.Wave.Audio.NumSamples]);
w.Write(new short[46]);
}
w.EndChunk();
w.EndChunk();
//The hydra.
w.StartListChunk("pdta");
//Presets.
w.StartChunk("phdr");
ushort currBagIndex = 0;
List <Zone> zones = new List <Zone>();
foreach (var p in Presets)
{
p.ReadingBagIndex = currBagIndex;
currBagIndex += (ushort)p.NumZones;
w.Write(p);
zones.AddRange(p.GetAllZones());
}
w.Write(new Preset()
{
Name = "EOP", Bank = 255, PresetNumber = 255, ReadingBagIndex = currBagIndex
});
w.EndChunk();
//Preset bags.
w.StartChunk("pbag");
ushort currGenIndex = 0;
ushort currModIndex = 0;
foreach (var z in zones)
{
w.Write(currGenIndex);
w.Write(currModIndex);
currGenIndex += (ushort)z.Generators.Count;
currModIndex += (ushort)z.Modulators.Count;
}
w.Write(currGenIndex);
w.Write(currModIndex);
w.EndChunk();
//Preset modulators.
w.StartChunk("pmod");
foreach (var z in zones)
{
foreach (var v in z.Modulators)
{
w.Write(v);
}
}
w.Write(new Modulator());
w.EndChunk();
//Preset generators.
w.StartChunk("pgen");
foreach (var z in zones)
{
foreach (var v in z.Generators)
{
w.Write(v);
}
}
w.Write(new Generator());
w.EndChunk();
//Instruments.
w.StartChunk("inst");
currBagIndex = 0;
zones = new List <Zone>();
foreach (var p in Instruments)
{
p.ReadingBagIndex = currBagIndex;
currBagIndex += (ushort)p.NumZones;
w.Write(p);
zones.AddRange(p.GetAllZones());
}
w.Write(new Instrument()
{
Name = "EOI", ReadingBagIndex = currBagIndex
});
w.EndChunk();
//Instrument bags.
w.StartChunk("ibag");
currGenIndex = 0;
currModIndex = 0;
foreach (var z in zones)
{
w.Write(currGenIndex);
w.Write(currModIndex);
currGenIndex += (ushort)z.Generators.Count;
currModIndex += (ushort)z.Modulators.Count;
}
w.Write(currGenIndex);
w.Write(currModIndex);
w.EndChunk();
//Instrument modulators.
w.StartChunk("imod");
foreach (var z in zones)
{
foreach (var v in z.Modulators)
{
w.Write(v);
}
}
w.Write(new Modulator());
w.EndChunk();
//Instrument generators.
w.StartChunk("igen");
foreach (var z in zones)
{
foreach (var v in z.Generators)
{
w.Write(v);
}
}
w.Write(new Generator());
w.EndChunk();
//Samples.
w.StartChunk("shdr");
foreach (var s in Samples)
{
w.CurrentOffset = samplePositions[s];
w.StructureOffsets.Push(waveTableStart);
w.Write(s);
}
w.Write("EOS".ToCharArray());
w.Write(new byte[0x2B]);
w.EndChunk();
//End the hydra.
w.EndChunk();
//Close file.
w.CloseFile();
}
}
private static int WriteVideoStreamHeader(RiffWriter rw, VideoStreamInfo vsi)
{
rw.BeginChunk (AviDemux.ID_strh);
int offset = (int)rw.binaryWriter.Seek (0, SeekOrigin.Current);
var bw = rw.binaryWriter;
bw.Write (AviDemux.FCC_vids);
bw.Write (vsi.codecFourCC);
bw.Write ((int)0); // dwFlags
bw.Write ((short)0); // wPriority
bw.Write ((short)0); // wLanguage
bw.Write ((int)0); // dwInitialFrames
int scale, rate;
FindScaleAndRate (out scale, out rate, vsi.framerate);
bw.Write (scale); // dwScale
bw.Write (rate); // dwRate
bw.Write ((int)0); // dwStart
bw.Write (vsi.frameCount); // dwLength. that's how many frames will be in this RIFF element, written over later
bw.Write ((int)0); // dwSuggestedBufferSize, not suggesting any value
bw.Write ((int)-1); // dwQuality = -1 meaning "default quality"
bw.Write ((int)0); // dwSampleSize = 0 for video
bw.Write ((short)0);
bw.Write ((short)0);
bw.Write ((short)vsi.width);
bw.Write ((short)vsi.height);
rw.EndChunk ();
return offset;
}
