mirror of https://github.com/mpv-player/mpv
97 lines
3.0 KiB
C
97 lines
3.0 KiB
C
/*
|
|
-------------------------------------------------------------------
|
|
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 */
|