diff --git a/jni/pjproject-android/third_party/BaseClasses/amvideo.cpp b/jni/pjproject-android/third_party/BaseClasses/amvideo.cpp
new file mode 100644
index 0000000..ad1436f
--- /dev/null
+++ b/jni/pjproject-android/third_party/BaseClasses/amvideo.cpp
@@ -0,0 +1,280 @@
+//------------------------------------------------------------------------------
+// File: AMVideo.cpp
+//
+// Desc: DirectShow base classes - implements helper functions for
+//       bitmap formats.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+#include <pjmedia-videodev/config.h>
+
+#if defined(PJMEDIA_VIDEO_DEV_HAS_DSHOW) && PJMEDIA_VIDEO_DEV_HAS_DSHOW != 0
+
+#include <streams.h>
+#include <limits.h>
+
+// These are bit field masks for true colour devices
+
+const DWORD bits555[] = {0x007C00,0x0003E0,0x00001F};
+const DWORD bits565[] = {0x00F800,0x0007E0,0x00001F};
+const DWORD bits888[] = {0xFF0000,0x00FF00,0x0000FF};
+
+// This maps bitmap subtypes into a bits per pixel value and also a
+// name. unicode and ansi versions are stored because we have to
+// return a pointer to a static string.
+const struct {
+    const GUID *pSubtype;
+    WORD BitCount;
+    CHAR *pName;
+    WCHAR *wszName;
+} BitCountMap[] =  { &MEDIASUBTYPE_RGB1,        1,   "RGB Monochrome",     L"RGB Monochrome",   
+                     &MEDIASUBTYPE_RGB4,        4,   "RGB VGA",            L"RGB VGA",          
+                     &MEDIASUBTYPE_RGB8,        8,   "RGB 8",              L"RGB 8",            
+                     &MEDIASUBTYPE_RGB565,      16,  "RGB 565 (16 bit)",   L"RGB 565 (16 bit)", 
+                     &MEDIASUBTYPE_RGB555,      16,  "RGB 555 (16 bit)",   L"RGB 555 (16 bit)", 
+                     &MEDIASUBTYPE_RGB24,       24,  "RGB 24",             L"RGB 24",           
+                     &MEDIASUBTYPE_RGB32,       32,  "RGB 32",             L"RGB 32",
+                     &MEDIASUBTYPE_ARGB32,    32,  "ARGB 32",             L"ARGB 32",
+                     &MEDIASUBTYPE_Overlay,     0,   "Overlay",            L"Overlay",          
+                     &GUID_NULL,                0,   "UNKNOWN",            L"UNKNOWN"           
+};
+
+// Return the size of the bitmap as defined by this header
+
+STDAPI_(DWORD) GetBitmapSize(const BITMAPINFOHEADER *pHeader)
+{
+    return DIBSIZE(*pHeader);
+}
+
+
+// This is called if the header has a 16 bit colour depth and needs to work
+// out the detailed type from the bit fields (either RGB 565 or RGB 555)
+
+STDAPI_(const GUID) GetTrueColorType(const BITMAPINFOHEADER *pbmiHeader)
+{
+    BITMAPINFO *pbmInfo = (BITMAPINFO *) pbmiHeader;
+    ASSERT(pbmiHeader->biBitCount == 16);
+
+    // If its BI_RGB then it's RGB 555 by default
+
+    if (pbmiHeader->biCompression == BI_RGB) {
+        return MEDIASUBTYPE_RGB555;
+    }
+
+    // Compare the bit fields with RGB 555
+
+    DWORD *pMask = (DWORD *) pbmInfo->bmiColors;
+    if (pMask[0] == bits555[0]) {
+        if (pMask[1] == bits555[1]) {
+            if (pMask[2] == bits555[2]) {
+                return MEDIASUBTYPE_RGB555;
+            }
+        }
+    }
+
+    // Compare the bit fields with RGB 565
+
+    pMask = (DWORD *) pbmInfo->bmiColors;
+    if (pMask[0] == bits565[0]) {
+        if (pMask[1] == bits565[1]) {
+            if (pMask[2] == bits565[2]) {
+                return MEDIASUBTYPE_RGB565;
+            }
+        }
+    }
+    return GUID_NULL;
+}
+
+
+// Given a BITMAPINFOHEADER structure this returns the GUID sub type that is
+// used to describe it in format negotiations. For example a video codec fills
+// in the format block with a VIDEOINFO structure, it also fills in the major
+// type with MEDIATYPE_VIDEO and the subtype with a GUID that matches the bit
+// count, for example if it is an eight bit image then MEDIASUBTYPE_RGB8
+
+STDAPI_(const GUID) GetBitmapSubtype(const BITMAPINFOHEADER *pbmiHeader)
+{
+    ASSERT(pbmiHeader);
+
+    // If it's not RGB then create a GUID from the compression type
+
+    if (pbmiHeader->biCompression != BI_RGB) {
+        if (pbmiHeader->biCompression != BI_BITFIELDS) {
+            FOURCCMap FourCCMap(pbmiHeader->biCompression);
+            return (const GUID) FourCCMap;
+        }
+    }
+
+    // Map the RGB DIB bit depth to a image GUID
+
+    switch(pbmiHeader->biBitCount) {
+        case 1    :   return MEDIASUBTYPE_RGB1;
+        case 4    :   return MEDIASUBTYPE_RGB4;
+        case 8    :   return MEDIASUBTYPE_RGB8;
+        case 16   :   return GetTrueColorType(pbmiHeader);
+        case 24   :   return MEDIASUBTYPE_RGB24;
+        case 32   :   return MEDIASUBTYPE_RGB32;
+    }
+    return GUID_NULL;
+}
+
+
+// Given a video bitmap subtype we return the number of bits per pixel it uses
+// We return a WORD bit count as thats what the BITMAPINFOHEADER uses. If the
+// GUID subtype is not found in the table we return an invalid USHRT_MAX
+
+STDAPI_(WORD) GetBitCount(const GUID *pSubtype)
+{
+    ASSERT(pSubtype);
+    const GUID *pMediaSubtype;
+    INT iPosition = 0;
+
+    // Scan the mapping list seeing if the source GUID matches any known
+    // bitmap subtypes, the list is terminated by a GUID_NULL entry
+
+    while (TRUE) {
+        pMediaSubtype = BitCountMap[iPosition].pSubtype;
+        if (IsEqualGUID(*pMediaSubtype,GUID_NULL)) {
+            return USHRT_MAX;
+        }
+        if (IsEqualGUID(*pMediaSubtype,*pSubtype)) {
+            return BitCountMap[iPosition].BitCount;
+        }
+        iPosition++;
+    }
+}
+
+
+// Given a bitmap subtype we return a description name that can be used for
+// debug purposes. In a retail build this function still returns the names
+// If the subtype isn't found in the lookup table we return string UNKNOWN
+
+int LocateSubtype(const GUID *pSubtype)
+{
+    ASSERT(pSubtype);
+    const GUID *pMediaSubtype;
+    INT iPosition = 0;
+
+    // Scan the mapping list seeing if the source GUID matches any known
+    // bitmap subtypes, the list is terminated by a GUID_NULL entry
+
+    while (TRUE) {
+        pMediaSubtype = BitCountMap[iPosition].pSubtype;
+        if (IsEqualGUID(*pMediaSubtype,*pSubtype) ||
+            IsEqualGUID(*pMediaSubtype,GUID_NULL)
+            )
+        {
+            break;
+        }
+        
+        iPosition++;
+    }
+
+    return iPosition;
+}
+
+
+
+STDAPI_(WCHAR *) GetSubtypeNameW(const GUID *pSubtype)
+{
+    return BitCountMap[LocateSubtype(pSubtype)].wszName;
+}
+
+STDAPI_(CHAR *) GetSubtypeNameA(const GUID *pSubtype)
+{
+    return BitCountMap[LocateSubtype(pSubtype)].pName;
+}
+
+#ifndef GetSubtypeName
+#error wxutil.h should have defined GetSubtypeName
+#endif
+#undef GetSubtypeName
+
+// this is here for people that linked to it directly; most people
+// would use the header file that picks the A or W version.
+STDAPI_(CHAR *) GetSubtypeName(const GUID *pSubtype)
+{
+    return GetSubtypeNameA(pSubtype);
+}
+
+
+// The mechanism for describing a bitmap format is with the BITMAPINFOHEADER
+// This is really messy to deal with because it invariably has fields that
+// follow it holding bit fields, palettes and the rest. This function gives
+// the number of bytes required to hold a VIDEOINFO that represents it. This
+// count includes the prefix information (like the rcSource rectangle) the
+// BITMAPINFOHEADER field, and any other colour information on the end.
+//
+// WARNING If you want to copy a BITMAPINFOHEADER into a VIDEOINFO always make
+// sure that you use the HEADER macro because the BITMAPINFOHEADER field isn't
+// right at the start of the VIDEOINFO (there are a number of other fields),
+//
+//     CopyMemory(HEADER(pVideoInfo),pbmi,sizeof(BITMAPINFOHEADER));
+//
+
+STDAPI_(LONG) GetBitmapFormatSize(const BITMAPINFOHEADER *pHeader)
+{
+    // Everyone has this to start with this  
+    LONG Size = SIZE_PREHEADER + pHeader->biSize;
+
+    ASSERT(pHeader->biSize >= sizeof(BITMAPINFOHEADER));
+    
+    // Does this format use a palette, if the number of colours actually used
+    // is zero then it is set to the maximum that are allowed for that colour
+    // depth (an example is 256 for eight bits). Truecolour formats may also
+    // pass a palette with them in which case the used count is non zero
+
+    // This would scare me.
+    ASSERT(pHeader->biBitCount <= iPALETTE || pHeader->biClrUsed == 0);
+
+    if (pHeader->biBitCount <= iPALETTE || pHeader->biClrUsed) {
+        LONG Entries = (DWORD) 1 << pHeader->biBitCount;
+        if (pHeader->biClrUsed) {
+            Entries = pHeader->biClrUsed;
+        }
+        Size += Entries * sizeof(RGBQUAD);
+    }
+
+    // Truecolour formats may have a BI_BITFIELDS specifier for compression
+    // type which means that room for three DWORDs should be allocated that
+    // specify where in each pixel the RGB colour components may be found
+
+    if (pHeader->biCompression == BI_BITFIELDS) {
+        Size += SIZE_MASKS;
+    }
+
+    // A BITMAPINFO for a palettised image may also contain a palette map that
+    // provides the information to map from a source palette to a destination
+    // palette during a BitBlt for example, because this information is only
+    // ever processed during drawing you don't normally store the palette map
+    // nor have any way of knowing if it is present in the data structure
+
+    return Size;
+}
+
+
+// Returns TRUE if the VIDEOINFO contains a palette
+
+STDAPI_(BOOL) ContainsPalette(const VIDEOINFOHEADER *pVideoInfo)
+{
+    if (PALETTISED(pVideoInfo) == FALSE) {
+        if (pVideoInfo->bmiHeader.biClrUsed == 0) {
+            return FALSE;
+        }
+    }
+    return TRUE;
+}
+
+
+// Return a pointer to the first entry in a palette
+
+STDAPI_(const RGBQUAD *) GetBitmapPalette(const VIDEOINFOHEADER *pVideoInfo)
+{
+    if (pVideoInfo->bmiHeader.biCompression == BI_BITFIELDS) {
+        return TRUECOLOR(pVideoInfo)->bmiColors;
+    }
+    return COLORS(pVideoInfo);
+}
+
+#endif /* PJMEDIA_VIDEO_DEV_HAS_DSHOW */