1 2 #ifndef __MPEGTYPE__ 3 #define __MPEGTYPE__ 4 5 #ifdef __cplusplus 6 extern "C" { 7 #endif 8 9 10 11 typedef struct tagAM_MPEGSTREAMTYPE 12 { 13 DWORD dwStreamId; 14 DWORD dwReserved; 15 AM_MEDIA_TYPE mt; 16 BYTE bFormat[1]; 17 } AM_MPEGSTREAMTYPE; 18 19 typedef struct tagAM_MPEGSYSTEMTYPE 20 { 21 DWORD dwBitRate; 22 DWORD cStreams; 23 AM_MPEGSTREAMTYPE Streams[1]; 24 } AM_MPEGSYSTEMTYPE; 25 DECLARE_INTERFACE_(IMpegAudioDecoder,IUnknown)26DECLARE_INTERFACE_(IMpegAudioDecoder, IUnknown) 27 { 28 STDMETHOD(get_FrequencyDivider) (THIS_ unsigned long *pDivider) PURE; 29 STDMETHOD(put_FrequencyDivider) (THIS_ unsigned long Divider) PURE; 30 STDMETHOD(get_DecoderAccuracy) (THIS_ unsigned long *pAccuracy) PURE; 31 STDMETHOD(put_DecoderAccuracy) (THIS_ unsigned long Accuracy) PURE; 32 STDMETHOD(get_Stereo) (THIS_ unsigned long *pStereo ) PURE; 33 STDMETHOD(put_Stereo) (THIS_ unsigned long Stereo) PURE; 34 STDMETHOD(get_DecoderWordSize) (THIS_ unsigned long *pWordSize) PURE; 35 STDMETHOD(put_DecoderWordSize) (THIS_ unsigned long WordSize) PURE; 36 STDMETHOD(get_IntegerDecode) (THIS_ unsigned long *pIntDecode) PURE; 37 STDMETHOD(put_IntegerDecode) (THIS_ unsigned long IntDecode) PURE; 38 STDMETHOD(get_DualMode) (THIS_ unsigned long *pIntDecode) PURE; 39 STDMETHOD(put_DualMode) (THIS_ unsigned long IntDecode) PURE; 40 STDMETHOD(get_AudioFormat) (THIS_ MPEG1WAVEFORMAT *lpFmt) PURE; 41 }; 42 43 #ifdef 44 } 45 #endif 46 #endif 47 48 #define AM_MPEGSTREAMTYPE_ELEMENTLENGTH(pStreamType) FIELD_OFFSET(AM_MPEGSTREAMTYPE, bFormat[(pStreamType)->mt.cbFormat]) 49 #define AM_MPEGSTREAMTYPE_NEXT(pStreamType) ((AM_MPEGSTREAMTYPE *)((PBYTE)(pStreamType) + ((AM_MPEGSTREAMTYPE_ELEMENTLENGTH(pStreamType) + 7) & ~7))) 50 #define AM_MPEG_AUDIO_DUAL_MERGE 0 51 #define AM_MPEG_AUDIO_DUAL_LEFT 1 52 #define AM_MPEG_AUDIO_DUAL_RIGHT 2 53 54