Add amstream dll (MultiMedia Streams), part of Direct Show.

include/austream.idl

diff --git a/include/austream.idl b/include/austream.idl
new file mode 100644
index 0000000..822c7c0
--- /dev/null
+++ b/include/austream.idl
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2004 Christian Costa
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+import "unknwn.idl";
+import "mmstream.idl";
+
+cpp_quote("#if 0")
+typedef struct tWAVEFORMATEX WAVEFORMATEX;
+cpp_quote ("#endif")
+
+interface IAudioMediaStream;
+interface IAudioStreamSample;
+interface IMemoryData;
+interface IAudioData;
+
+[
+object,
+local,
+uuid(f7537560-a3be-11d0-8212-00c04fc32c45),
+pointer_default(unique)
+]
+interface IAudioMediaStream : IMediaStream
+{
+	HRESULT GetFormat(
+		[out] /*[optional]*/ WAVEFORMATEX *pWaveFormatCurrent
+	);
+
+	HRESULT SetFormat(
+		[in] const WAVEFORMATEX *lpWaveFormat);
+
+	HRESULT CreateSample(
+		[in] IAudioData *pAudioData,
+		[in] DWORD dwFlags,
+		[out] IAudioStreamSample **ppSample
+	);
+}
+
+
+[
+object,
+local,
+uuid(345fee00-aba5-11d0-8212-00c04fc32c45),
+pointer_default(unique)
+]
+interface IAudioStreamSample : IStreamSample
+{
+	HRESULT GetAudioData(
+		[out] IAudioData **ppAudio
+	);
+}
+
+
+[
+object,
+local,
+uuid(327fc560-af60-11d0-8212-00c04fc32c45),
+pointer_default(unique)
+]
+interface IMemoryData : IUnknown
+{
+	HRESULT SetBuffer(
+		[in] DWORD cbSize,
+		[in] BYTE *pbData,
+		[in] DWORD dwFlags
+	);
+
+	HRESULT GetInfo(
+		[out] DWORD *pdwLength,
+		[out] BYTE **ppbData,
+		[out] DWORD *pcbActualData
+	);
+	HRESULT SetActual(
+		[in] DWORD cbDataValid
+	);
+}
+
+
+[
+object,
+local,
+uuid(54c719c0-af60-11d0-8212-00c04fc32c45),
+pointer_default(unique)
+]
+interface IAudioData : IMemoryData
+{
+	HRESULT GetFormat(
+		[out] /*[optional]*/ WAVEFORMATEX *pWaveFormatCurrent
+	);
+
+	HRESULT SetFormat(
+		[in] const WAVEFORMATEX *lpWaveFormat
+	);
+}