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author | wm4 <wm4@nowhere> | 2012-08-12 15:30:21 +0200 |
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committer | wm4 <wm4@nowhere> | 2012-08-16 17:16:33 +0200 |
commit | aebfbbf2bdda8e18beef90c16da97bd335f7d3b0 (patch) | |
tree | a7362bf3ef6f2d80a47b2e539a2ea4efe5e2e079 /loader/dshow/mediatype.h | |
parent | c6b03ffef6250096373c4a81a489dae9fbff9087 (diff) | |
download | mpv-aebfbbf2bdda8e18beef90c16da97bd335f7d3b0.tar.bz2 mpv-aebfbbf2bdda8e18beef90c16da97bd335f7d3b0.tar.xz |
Remove win32/qt/xanim/real binary codecs loading
Remove the win32 loader - the win32 emulation layer, as well as the
code for using DirectShow/DMO/VFW codecs. Remove loading of xanim,
QuickTime, and RealMedia codecs.
The win32 emulation layer is based on a very old version of wine.
Apparently, wine code was copied and hacked until it was somehow able
to load a limited collection of binary codecs. It poked around in the
code segment of some known binary codecs to disable unsupported win32
API calls to make them work. Example from module.c:
for (i=0;i<5;i++) RVA(0x19e842)[i]=0x90; // make_new_region ?
for (i=0;i<28;i++) RVA(0x19e86d)[i]=0x90; // call__call_CreateCompatibleDC ?
for (i=0;i<5;i++) RVA(0x19e898)[i]=0x90; // jmp_to_call_loadbitmap ?
for (i=0;i<9;i++) RVA(0x19e8ac)[i]=0x90; // call__calls_OLE_shit ?
for (i=0;i<106;i++) RVA(0x261b10)[i]=0x90; // disable threads
Just to show how utterly insane this code is. You wouldn't want even
your worst enemy to have to maintain this. In fact, it seems nobody
made major changes to this code ever since it was committed.
Most formats can be decoded by libavcodecs these days, and the loader
couldn't be used on 64 bit platforms anyway. The same is (probably)
true for the other binary codecs.
General note about how support for win32 codecs could be added back:
It's not possible to replace the win32 loader code by using wine as
library, because modern wine can not be linked with native Linux
programs for certain reasons. It would be possible to to move DirectShow
video decoding into a separate process linked with wine, like the
CoreAVC-for-Linux patches do. There is also the mplayer-ww fork, which
uses the dshownative library to use DirectShow codecs on Windows.
Diffstat (limited to 'loader/dshow/mediatype.h')
-rw-r--r-- | loader/dshow/mediatype.h | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/loader/dshow/mediatype.h b/loader/dshow/mediatype.h deleted file mode 100644 index ecb696ca39..0000000000 --- a/loader/dshow/mediatype.h +++ /dev/null @@ -1,96 +0,0 @@ -/* -------------------------------------------------------------------- - AM_MEDIA_TYPE service functions declarations -------------------------------------------------------------------- -*/ - -#ifndef MPLAYER_MEDIATYPE_H -#define MPLAYER_MEDIATYPE_H - -#include "guids.h" - -typedef struct __attribute__((__packed__)) MediaType -{ - GUID majortype; //0x0 - GUID subtype; //0x10 - int bFixedSizeSamples; //0x20 - int bTemporalCompression; //0x24 - unsigned long lSampleSize; //0x28 - GUID formattype; //0x2c - IUnknown* pUnk; //0x3c - unsigned long cbFormat; //0x40 - char* pbFormat; //0x44 -} AM_MEDIA_TYPE; - -/** - * \brief print info from AM_MEDIA_TYPE structure - * =param[in] label short lable for media type - * \param[in] pmt pointer to AM_MEDIA_TYPE - * - * routine used for debug purposes - * - */ -void DisplayMediaType(const char * label,const AM_MEDIA_TYPE* pmt); -/** - * \brief frees memory, pointed by pbFormat and pUnk members of AM_MEDIA_TYPE structure - * - * \param[in] pmt pointer to structure - * - * \note - * routine does not frees memory allocated for AM_MEDIA_TYPE, so given pointer will be - * valid after this routine call. - * - */ -void FreeMediaType(AM_MEDIA_TYPE* pmt); -/** - * \brief frees memory allocated for AM_MEDIA_TYPE structure, including pbFormat and pUnk - * members - * - * \param[in] pmt pointer to structure - * - * \note - * after call to this routine, pointer to AM_MEDIA_TYPE will not be valid anymore - * - */ -void DeleteMediaType(AM_MEDIA_TYPE* pmt); -/** - * \brief copyies info from source to destination AM_MEDIA_TYPE structures - * - * \param[in] pSrc pointer to AM_MEDIA_TYPE structure to copy data from - * \param[out] pDst pointer to AM_MEDIA_TYPE structure to copy data to - * - * \return S_OK - success - * \return E_POINTER - pSrc or pDst is NULL or (pSrc->cbFormat && !pSrc->pbFormat) - * \return E_INVALIDARG - (pSrc == pDst) - * \return E_OUTOFMEMORY - Insufficient memory - * - * \note - * - pDst must point to existing AM_MEDIA_TYPE structure (all data will be overwritten) - * - if pDst->pbFormat!=NULL this will cause memory leak (as described in Directshow SDK)! - * - */ -HRESULT CopyMediaType(AM_MEDIA_TYPE* pDst,const AM_MEDIA_TYPE* pSrc); -/** - * \brief allocates new AM_MEDIA_TYPE structure and fills it with info from given one - * - * \param[in] pSrc pointer to AM_MEDIA_TYPE structure to copy data from - * - * \return result code, returned from CopyMediaType - * - */ -AM_MEDIA_TYPE* CreateMediaType(const AM_MEDIA_TYPE* pSrc); - -/** - * \brief compares two AM_MEDIA_TYPE structures for compatibility - * - * \param[in] pmt1 first AM_MEDIA_TYPE structure for compare - * \param[in] pmt2 second AM_MEDIA_TYPE structure for compare - * \param[in] bWildcards 1 means that GUID_NULL of one structure will be compatible with any value of another structure - * - * \return 1 if structures are compatible - * \return 0 if structures are not compatible - * - */ -int CompareMediaTypes(const AM_MEDIA_TYPE * pmt1, const AM_MEDIA_TYPE * pmt2, int bWildcards); - -#endif /* MPLAYER_MEDIA_TYPE_H */ |