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- #include <pjmedia-videodev/config.h>
- #if defined(PJMEDIA_VIDEO_DEV_HAS_DSHOW) && PJMEDIA_VIDEO_DEV_HAS_DSHOW != 0
- #include <streams.h>
- #include <limits.h>
- const DWORD bits555[] = {0x007C00,0x0003E0,0x00001F};
- const DWORD bits565[] = {0x00F800,0x0007E0,0x00001F};
- const DWORD bits888[] = {0xFF0000,0x00FF00,0x0000FF};
- 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"
- };
- STDAPI_(DWORD) GetBitmapSize(const BITMAPINFOHEADER *pHeader)
- {
- return DIBSIZE(*pHeader);
- }
- STDAPI_(const GUID) GetTrueColorType(const BITMAPINFOHEADER *pbmiHeader)
- {
- BITMAPINFO *pbmInfo = (BITMAPINFO *) pbmiHeader;
- ASSERT(pbmiHeader->biBitCount == 16);
-
- if (pbmiHeader->biCompression == BI_RGB) {
- return MEDIASUBTYPE_RGB555;
- }
-
- DWORD *pMask = (DWORD *) pbmInfo->bmiColors;
- if (pMask[0] == bits555[0]) {
- if (pMask[1] == bits555[1]) {
- if (pMask[2] == bits555[2]) {
- return MEDIASUBTYPE_RGB555;
- }
- }
- }
-
- 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;
- }
- STDAPI_(const GUID) GetBitmapSubtype(const BITMAPINFOHEADER *pbmiHeader)
- {
- ASSERT(pbmiHeader);
-
- if (pbmiHeader->biCompression != BI_RGB) {
- if (pbmiHeader->biCompression != BI_BITFIELDS) {
- FOURCCMap FourCCMap(pbmiHeader->biCompression);
- return (const GUID) FourCCMap;
- }
- }
-
- 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;
- }
- STDAPI_(WORD) GetBitCount(const GUID *pSubtype)
- {
- ASSERT(pSubtype);
- const GUID *pMediaSubtype;
- INT iPosition = 0;
-
-
- while (TRUE) {
- pMediaSubtype = BitCountMap[iPosition].pSubtype;
- if (IsEqualGUID(*pMediaSubtype,GUID_NULL)) {
- return USHRT_MAX;
- }
- if (IsEqualGUID(*pMediaSubtype,*pSubtype)) {
- return BitCountMap[iPosition].BitCount;
- }
- iPosition++;
- }
- }
- int LocateSubtype(const GUID *pSubtype)
- {
- ASSERT(pSubtype);
- const GUID *pMediaSubtype;
- INT iPosition = 0;
-
-
- 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
- STDAPI_(CHAR *) GetSubtypeName(const GUID *pSubtype)
- {
- return GetSubtypeNameA(pSubtype);
- }
- STDAPI_(LONG) GetBitmapFormatSize(const BITMAPINFOHEADER *pHeader)
- {
-
- LONG Size = SIZE_PREHEADER + pHeader->biSize;
- ASSERT(pHeader->biSize >= sizeof(BITMAPINFOHEADER));
-
-
-
-
-
-
- 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);
- }
-
-
-
- if (pHeader->biCompression == BI_BITFIELDS) {
- Size += SIZE_MASKS;
- }
-
-
-
-
-
- return Size;
- }
- STDAPI_(BOOL) ContainsPalette(const VIDEOINFOHEADER *pVideoInfo)
- {
- if (PALETTISED(pVideoInfo) == FALSE) {
- if (pVideoInfo->bmiHeader.biClrUsed == 0) {
- return FALSE;
- }
- }
- return TRUE;
- }
- STDAPI_(const RGBQUAD *) GetBitmapPalette(const VIDEOINFOHEADER *pVideoInfo)
- {
- if (pVideoInfo->bmiHeader.biCompression == BI_BITFIELDS) {
- return TRUECOLOR(pVideoInfo)->bmiColors;
- }
- return COLORS(pVideoInfo);
- }
- #endif
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