private void TestProtected()
{
bool b;
WMUtils.WMIsContentProtected(sFileName, out b);
Debug.Assert(!b);
WMUtils.WMIsContentProtected(@"c:\STC3_623kbps_550kbpsVideo_64kbpsAudio_30fps.wmv", out b);
Debug.Assert(b);
try
{
WMUtils.WMIsContentProtected(@"c:\notfound.wmv", out b);
Debug.Assert(false);
}
catch (Exception e)
{
int hr = Marshal.GetHRForException(e);
Debug.Assert(hr == NSResults.E_INVALID_NAME);
}
}
public AudioDecoder(string path, Stream IO)
{
m_path = path;
isValid(path);
bool pfIsProtected;
WMUtils.WMIsContentProtected(path, out pfIsProtected);
if (pfIsProtected)
{
throw new Exception("DRM present");
}
WMUtils.WMCreateSyncReader(IntPtr.Zero, Rights.None, out m_syncReader);
if (path == null)
{
m_IO = IO != null ? IO : new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read, 0x10000);
m_streamWrapper = new StreamWrapper(m_IO);
m_syncReader.OpenStream(m_streamWrapper);
}
else
{
m_syncReader.Open(path);
}
var pProfile = (m_syncReader as IWMProfile);
int dwStreamCount;
pProfile.GetStreamCount(out dwStreamCount);
for (int dwIndex = 0; dwIndex < dwStreamCount; dwIndex++)
{
IWMStreamConfig pConfig = null;
pProfile.GetStream(dwIndex, out pConfig);
try
{
Guid guid;
pConfig.GetStreamType(out guid);
if (MediaType.Audio != guid)
{
continue;
}
short wStreamNum;
pConfig.GetStreamNumber(out wStreamNum);
int dwBitrate = -1;
pConfig.GetBitrate(out dwBitrate);
var pIWMMediaProps = pConfig as IWMMediaProps;
int cbType = 0;
pIWMMediaProps.GetMediaType(null, ref cbType);
var pMediaType = new AMMediaType();
pMediaType.formatSize = cbType;
pIWMMediaProps.GetMediaType(pMediaType, ref cbType);
if (pMediaType.formatType != FormatType.WaveEx)
{
continue;
}
if (pMediaType.subType != MediaSubType.WMAudio_Lossless)
{
continue;
}
m_wStreamNum = wStreamNum;
pcm = WaveFormatExtensible.FromMediaType(pMediaType).GetConfig();
break;
}
finally
{
Marshal.ReleaseComObject(pConfig);
}
}
if (m_wStreamNum == -1)
{
throw new Exception("No WMA lossless streams found");
}
m_syncReader.SetReadStreamSamples(m_wStreamNum, false);
bool pfCompressed;
m_syncReader.GetReadStreamSamples(m_wStreamNum, out pfCompressed);
if (pfCompressed)
{
throw new Exception("doesn't decompress");
}
m_syncReader.GetOutputNumberForStream(m_wStreamNum, out m_dwAudioOutputNum);
IWMOutputMediaProps pProps;
m_syncReader.GetOutputProps(m_dwAudioOutputNum, out pProps);
try
{
StringBuilder sName = null;
AMMediaType pMediaType = null;
int cbType = 0;
cbType = 0;
pMediaType = null;
pProps.GetMediaType(pMediaType, ref cbType);
// Get the name of the output we'll be using
sName = null;
short iName = 0;
pProps.GetConnectionName(sName, ref iName);
sName = new StringBuilder(iName);
pProps.GetConnectionName(sName, ref iName);
if (pcm.ChannelCount > 2)
{
m_syncReader.SetOutputSetting(m_dwAudioOutputNum, Constants.g_wszEnableDiscreteOutput, AttrDataType.BOOL, new byte[] { 1, 0, 0, 0 }, 4);
m_syncReader.SetOutputSetting(m_dwAudioOutputNum, Constants.g_wszSpeakerConfig, AttrDataType.DWORD, new byte[] { 0, 0, 0, 0 }, 4);
}
pMediaType = new AMMediaType();
pMediaType.formatSize = cbType - Marshal.SizeOf(typeof(AMMediaType));
//
// Get the value for MediaType
//
pProps.GetMediaType(pMediaType, ref cbType);
try
{
if (MediaType.Audio != pMediaType.majorType)
{
throw new Exception("not Audio");
}
if (FormatType.WaveEx != pMediaType.formatType)
{
throw new Exception("not WaveEx");
}
var wfe = new WaveFormatExtensible(pcm);
Marshal.FreeCoTaskMem(pMediaType.formatPtr);
pMediaType.formatPtr = IntPtr.Zero;
pMediaType.formatSize = 0;
pMediaType.formatPtr = Marshal.AllocCoTaskMem(Marshal.SizeOf(wfe));
pMediaType.formatSize = Marshal.SizeOf(wfe);
Marshal.StructureToPtr(wfe, pMediaType.formatPtr, false);
pProps.SetMediaType(pMediaType);
m_syncReader.SetOutputProps(m_dwAudioOutputNum, pProps);
}
finally
{
WMUtils.FreeWMMediaType(pMediaType);
}
}
finally
{
Marshal.ReleaseComObject(pProps);
}
//try
//{
// AttrDataType wmtType;
// short cbLength = 0;
// short wAnyStream = 0;
// var pHeaderInfo = m_syncReader as IWMHeaderInfo;
// pHeaderInfo.GetAttributeByName(ref wAnyStream, Constants.g_wszWMDuration, out wmtType, null, ref cbLength);
// var pbValue = new byte[cbLength];
// pHeaderInfo.GetAttributeByName(ref wAnyStream, Constants.g_wszWMDuration, out wmtType, pbValue, ref cbLength);
// var m_cnsFileDuration = BitConverter.ToInt64(pbValue, 0);
// _sampleCount = m_cnsFileDuration * m_pWfx.nSamplesPerSec / 10000000;
// // NOT ACCURATE ENOUGH (~1ms precision observed)
//}
//catch (COMException)
//{
//}
//try
//{
// var pHeaderInfo = m_syncReader as IWMHeaderInfo2;
// int nCodec;
// pHeaderInfo.GetCodecInfoCount(out nCodec);
// for (int wIndex = 0; wIndex < nCodec; wIndex++)
// {
// CodecInfoType enumCodecType;
// short cchName = 0;
// short cchDescription = 0;
// short cbCodecInfo = 0;
// pHeaderInfo.GetCodecInfo(wIndex, ref cchName, null,
// ref cchDescription, null, out enumCodecType,
// ref cbCodecInfo, null);
// var pwszName = new StringBuilder(cchName);
// var pwszDescription = new StringBuilder(cchDescription);
// var pbCodecInfo = new byte[cbCodecInfo];
// pHeaderInfo.GetCodecInfo(wIndex, ref cchName, pwszName,
// ref cchDescription, pwszDescription, out enumCodecType,
// ref cbCodecInfo, pbCodecInfo);
// if (enumCodecType == CodecInfoType.Audio)
// {
// // pbCodecInfo = {99,1} ??/
// }
// }
//}
//catch (COMException)
//{
//}
//int cbMax;
//m_syncReader.GetMaxOutputSampleSize(m_dwAudioOutputNum, out cbMax);
}