135 lines
4.7 KiB
C
135 lines
4.7 KiB
C
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/****************************************************************************
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Task State : MCIAVI has a separate background task for every open
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instance of mciavi. The task handle and task state are stored in
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the per-instance data structure. The task can be in one of four
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states.
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TASKABORT : Set by the AVI task when it fails to open the requested
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file during initialisation.
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TASKINIT : This is the initial task state set when the
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instance data structure is initialized in mwOpenDevice()
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before the actual task is created by mmTaskCreate().
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After the task is created, mwOpenDevice() waits until
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the task state changes to TASKIDLE before returning
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success so that the background task is definitely initialized
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after an open call.
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TASKIDLE : The task sets the state to TASKIDLE and blocks whenever
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there is nothing to do. When the task wakes, the state is either
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TASKCLOSE if the instance is being closed or else TASKBUSY
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if the task is to begin recording or playback of the file.
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TASKCLOSE : mwCloseDevice() stops playback or recording which forces
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the task state to TASKIDLE and then sets the state to TASKCLOSE and
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wakes the task so that the task will destroy itself.
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TASKSTARTING: The task is in this state when it is initializing for
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playback, but hasn't started yet. This is used so that the calling
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task can wait for play to start before returning "no error" as the
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result of an MCI play command.
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TASKCUEING: The task is in this state when it is reading extra
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records and buffering up audio before actually starting to play.
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TASKPAUSED: The task is in this state while it is paused.
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TASKPLAYING: The task is in this state during playback
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****************************************************************************/
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#define TASKABORT 0
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#define TASKBEINGCREATED 1
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#define TASKINIT 2
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#define TASKIDLE 3
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#define TASKSTARTING 4
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#define TASKCUEING 5
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#define TASKPLAYING 6
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#define TASKPAUSED 7
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#define TASKCLOSE 8
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#define TASKCLOSED 9
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// 9
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// 10
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#define TASKREADINDEX 11
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#define TASKRELOAD 12
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/* A function back in device.c */
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DWORD mciaviTaskMessage(NPMCIGRAPHIC npMCI, int msg);
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void NEAR PASCAL ShowStage(NPMCIGRAPHIC npMCI);
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//
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// call this to RTL to AVIFile.
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//
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BOOL FAR InitAVIFile(NPMCIGRAPHIC npMCI);
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BOOL FAR FreeAVIFile(NPMCIGRAPHIC npMCI);
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/* Functions in avitask.c */
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void FAR PASCAL _LOADDS mciaviTask(DWORD dwInst);
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void FAR PASCAL mciaviTaskCleanup(NPMCIGRAPHIC npMCI);
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void NEAR PASCAL mciaviMessage(NPMCIGRAPHIC npMCI, UINT msg);
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/* Functions in aviplay.c */
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UINT NEAR PASCAL mciaviPlayFile(NPMCIGRAPHIC npMCI);
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/* Functions in avidraw.c */
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/* !!! Should this be externally visible? */
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BOOL NEAR PASCAL DoStreamUpdate(NPMCIGRAPHIC npMCI, BOOL fPaint);
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void NEAR PASCAL StreamInvalidate(NPMCIGRAPHIC npMCI, LPRECT prc);
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UINT NEAR PASCAL PrepareDC(NPMCIGRAPHIC npMCI);
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void NEAR PASCAL UnprepareDC(NPMCIGRAPHIC npMCI);
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BOOL FAR PASCAL DrawBegin(NPMCIGRAPHIC npMCI, BOOL FAR *fRestart);
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void NEAR PASCAL DrawEnd(NPMCIGRAPHIC npMCI);
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BOOL NEAR PASCAL DisplayVideoFrame(NPMCIGRAPHIC npMCI, BOOL fHurryUp);
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BOOL NEAR PASCAL ProcessPaletteChange(NPMCIGRAPHIC npMCI, DWORD cksize);
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/* Functions in avisound.c */
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BOOL NEAR PASCAL PlayRecordAudio(NPMCIGRAPHIC npMCI, BOOL FAR *pfHurryUp,
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BOOL FAR *pfPlayedAudio);
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BOOL NEAR PASCAL KeepPlayingAudio(NPMCIGRAPHIC npMCI);
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BOOL NEAR PASCAL HandleAudioChunk(NPMCIGRAPHIC npMCI);
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DWORD FAR PASCAL SetUpAudio(NPMCIGRAPHIC npMCI, BOOL fPlaying);
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DWORD FAR PASCAL CleanUpAudio(NPMCIGRAPHIC npMCI);
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void FAR PASCAL BuildVolumeTable(NPMCIGRAPHIC npMCI);
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BOOL FAR PASCAL StealWaveDevice(NPMCIGRAPHIC npMCI);
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BOOL FAR PASCAL GiveWaveDevice(NPMCIGRAPHIC npMCI);
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#define WM_AUDIO_ON WM_USER+100
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#define WM_AUDIO_OFF WM_USER+101
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#ifdef WIN32
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#define WM_AVISWP WM_USER+102
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#endif
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// in hmemcpy.asm
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#ifndef WIN32
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LPVOID FAR PASCAL MemCopy(LPVOID dest, LPVOID source, LONG count);
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#else
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#define MemCopy memmove
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#endif // WIN16
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#define GET_BYTE() (*((BYTE _huge *) (npMCI->lp))++)
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#ifdef WIN32
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#define GET_WORD() (*((UNALIGNED WORD _huge *) (npMCI->lp))++)
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#define GET_DWORD() (*((UNALIGNED DWORD _huge *) (npMCI->lp))++)
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#define PEEK_DWORD() (*((UNALIGNED DWORD _huge *) (npMCI->lp)))
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#else
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#define GET_WORD() (*((WORD _huge *) (npMCI->lp))++)
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#define GET_DWORD() (*((DWORD _huge *) (npMCI->lp))++)
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#define PEEK_DWORD() (*((DWORD _huge *) (npMCI->lp)))
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#endif
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#define SKIP_BYTES(nBytes) ((npMCI->lp) += (nBytes))
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#define Now() (timeGetTime())
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void NEAR PASCAL aviTaskYield(void);
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BOOL FAR PASCAL ReadIndex(NPMCIGRAPHIC npMCI);
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LONG NEAR PASCAL FindPrevKeyFrame(NPMCIGRAPHIC npMCI, STREAMINFO *psi, LONG lFrame);
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LONG NEAR PASCAL FindNextKeyFrame(NPMCIGRAPHIC npMCI, STREAMINFO *psi, LONG lFrame);
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