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/*
-------------------------------------------------------------------
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 */
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