/// <summary>
/// Handle chunk elements found in the AVI file. Ignores unknown chunks and
/// </summary>
/// <param name="rp"></param>
/// <param name="fourCc"></param>
/// <param name="unpaddedLength"></param>
/// <param name="paddedLength"></param>
private void ProcessAviChunk(RiffParser rp, int fourCc, int unpaddedLength, int paddedLength)
{
if (AviRiffData.MainAviHeader == fourCc)
{
DecodeAviHeader(rp, paddedLength); // Main AVI header
}
else if (AviRiffData.AviStreamHeader == fourCc)
{
DecodeAviStream(rp, paddedLength); // Stream header
}
else if (AviRiffData.AviIsft == fourCc)
{
var ba = new byte[paddedLength];
rp.ReadData(ba, 0, paddedLength);
var sb = new StringBuilder(unpaddedLength);
for (int i = 0; i < unpaddedLength; ++i)
{
if (0 != ba[i])
{
sb.Append((char)ba[i]);
}
}
_isft = sb.ToString();
}
else
{
rp.SkipData(paddedLength); // Unknown chunk - skip
}
}
/// <summary>
/// Handle chunk elements found in the AVI file. Ignores unknown chunks and
/// </summary>
/// <param name="rp"></param>
/// <param name="FourCC"></param>
/// <param name="unpaddedLength"></param>
/// <param name="paddedLength"></param>
private void ProcessAVIChunk(RiffParser rp, int FourCC, int unpaddedLength, int paddedLength)
{
if (AviRiffData.ckidMainAVIHeader == FourCC)
{
// Main AVI header
DecodeAVIHeader(rp, paddedLength);
}
else if (AviRiffData.ckidAVIStreamHeader == FourCC)
{
// Stream header
DecodeAVIStream(rp, paddedLength);
}
else if (AviRiffData.ckidAVIISFT == FourCC)
{
Byte[] ba = new byte[paddedLength];
rp.ReadData(ba, 0, paddedLength);
StringBuilder sb = new StringBuilder(unpaddedLength);
for (int i = 0; i < unpaddedLength; ++i)
{
if (0 != ba[i])
{
sb.Append((char)ba[i]);
}
}
m_isft = sb.ToString();
}
else
{
// Unknon chunk - skip
rp.SkipData(paddedLength);
}
}
private void ProcessWaveChunk(RiffParser rp, int fourCc, int unpaddedLength, int length)
{
// Is this a 'fmt' chunk?
if (AviRiffData.WaveFmt == fourCc)
{
DecodeWave(rp, length);
}
else
{
rp.SkipData(length);
}
}
private void ProcessWaveChunk(RiffParser rp, int FourCC, int unpaddedLength, int length)
{
// Is this a 'fmt' chunk?
if (AviRiffData.ckidWaveFMT == FourCC)
{
DecodeWave(rp, length);
}
else
{
rp.SkipData(length);
}
}
/// <summary>
/// Handle List elements found in the AVI file. Ignores unknown lists and recursively looks
/// at the content of known lists.
/// </summary>
/// <param name="rp"></param>
/// <param name="fourCc"></param>
/// <param name="length"></param>
private void ProcessAviList(RiffParser rp, int fourCc, int length)
{
RiffParser.ProcessChunkElement pac = ProcessAviChunk;
RiffParser.ProcessListElement pal = ProcessAviList;
// Is this the header?
if (AviRiffData.AviHeaderList == fourCc || AviRiffData.AviStreamList == fourCc || AviRiffData.InfoList == fourCc)
{
while (length > 0)
{
if (false == rp.ReadElement(ref length, pac, pal))
{
break;
}
}
}
else
{
rp.SkipData(length); // Unknown lists - ignore
}
}
/// <summary>
/// Handle List elements found in the AVI file. Ignores unknown lists and recursively looks
/// at the content of known lists.
/// </summary>
/// <param name="rp"></param>
/// <param name="FourCC"></param>
/// <param name="length"></param>
private void ProcessAVIList(RiffParser rp, int FourCC, int length)
{
RiffParser.ProcessChunkElement pac = ProcessAVIChunk;
RiffParser.ProcessListElement pal = ProcessAVIList;
// Is this the header?
if ((AviRiffData.ckidAVIHeaderList == FourCC) ||
(AviRiffData.ckidAVIStreamList == FourCC) ||
(AviRiffData.ckidINFOList == FourCC))
{
while (length > 0)
{
if (false == rp.ReadElement(ref length, pac, pal))
{
break;
}
}
}
else
{
// Unknown lists - ignore
rp.SkipData(length);
}
}
private void ProcessWaveChunk(RiffParser rp, int FourCC, int unpaddedLength, int length)
{
// Is this a 'fmt' chunk?
if (AviRiffData.ckidWaveFMT == FourCC)
{
DecodeWave(rp, length);
}
else
{
rp.SkipData(length);
}
}
/// <summary>
/// Handle List elements found in the AVI file. Ignores unknown lists and recursively looks
/// at the content of known lists.
/// </summary>
/// <param name="rp"></param>
/// <param name="FourCC"></param>
/// <param name="length"></param>
private void ProcessAVIList(RiffParser rp, int FourCC, int length)
{
RiffParser.ProcessChunkElement pac = ProcessAVIChunk;
RiffParser.ProcessListElement pal = ProcessAVIList;
// Is this the header?
if ((AviRiffData.ckidAVIHeaderList == FourCC)
|| (AviRiffData.ckidAVIStreamList == FourCC)
|| (AviRiffData.ckidINFOList == FourCC))
{
while (length > 0)
{
if (false == rp.ReadElement(ref length, pac, pal)) break;
}
}
else
{
// Unknown lists - ignore
rp.SkipData(length);
}
}
/// <summary>
/// Handle chunk elements found in the AVI file. Ignores unknown chunks and
/// </summary>
/// <param name="rp"></param>
/// <param name="FourCC"></param>
/// <param name="unpaddedLength"></param>
/// <param name="paddedLength"></param>
private void ProcessAVIChunk(RiffParser rp, int FourCC, int unpaddedLength, int paddedLength)
{
if (AviRiffData.ckidMainAVIHeader == FourCC)
{
// Main AVI header
DecodeAVIHeader(rp, paddedLength);
}
else if (AviRiffData.ckidAVIStreamHeader == FourCC)
{
// Stream header
DecodeAVIStream(rp, paddedLength);
}
else if (AviRiffData.ckidAVIISFT == FourCC)
{
Byte[] ba = new byte[paddedLength];
rp.ReadData(ba, 0, paddedLength);
StringBuilder sb = new StringBuilder(unpaddedLength);
for (int i = 0; i < unpaddedLength; ++i)
{
if (0 != ba[i]) sb.Append((char)ba[i]);
}
m_isft = sb.ToString();
}
else
{
// Unknon chunk - skip
rp.SkipData(paddedLength);
}
}
/// <summary>
/// Default list element handler - skip the entire list
/// </summary>
/// <param name="rp"></param>
/// <param name="FourCC"></param>
/// <param name="length"></param>
private void ProcessList(RiffParser rp, int FourCC, int length)
{
rp.SkipData(length);
}
/// <summary>
/// Default list element handler - skip the entire list
/// </summary>
/// <param name="rp"></param>
/// <param name="fourCc"></param>
/// <param name="length"></param>
private static void ProcessList(RiffParser rp, int fourCc, int length)
{
rp.SkipData(length);
}
/// <summary>
/// Default list element handler - skip the entire list
/// </summary>
/// <param name="rp"></param>
/// <param name="FourCC"></param>
/// <param name="length"></param>
private void ProcessList(RiffParser rp, int FourCC, int length)
{
rp.SkipData(length);
}