210 lines
6.8 KiB
C
210 lines
6.8 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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N.B. TASKINIT is no longer used
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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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// 9
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// 10
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//#define TASKREADINDEX 11
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//#define TASKRELOAD 12
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// inter-thread requests - from user to worker
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#define AVI_CLOSE 1
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#define AVI_PLAY 2
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#define AVI_STOP 3
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#define AVI_REALIZE 4
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#define AVI_UPDATE 5
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#define AVI_PAUSE 6
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#define AVI_CUE 7
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#define AVI_SEEK 8
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#define AVI_WINDOW 9
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#define AVI_SETSPEED 10
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#define AVI_MUTE 11
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#define AVI_SETVOLUME 12
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#define AVI_AUDIOSTREAM 13
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#define AVI_VIDEOSTREAM 14
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#define AVI_PUT 15
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#define AVI_PALETTE 16
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#define AVI_RESUME 17
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#define AVI_GETVOLUME 18
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#define AVI_WAVESTEAL 19
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#define AVI_WAVERETURN 20
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#define AVI_PALETTECOLOR 21
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/* A function back in device.c */
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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_PTR dwInst);
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void FAR PASCAL mciaviTaskCleanup(NPMCIGRAPHIC npMCI);
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/* Functions in aviplay.c */
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UINT NEAR PASCAL mciaviPlayFile(NPMCIGRAPHIC npMCI, BOOL bSetEvent);
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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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/* Functions in aviopen.c */
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BOOL FAR PASCAL mciaviCloseFile(NPMCIGRAPHIC npMCI);
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// now called on app thread
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BOOL FAR PASCAL mciaviOpenFile(NPMCIGRAPHIC npMCI);
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// called on worker thread to complete
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BOOL NEAR PASCAL OpenFileInit(NPMCIGRAPHIC npMCI);
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/* Messages used to control switching of audio between (and within)
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* applications. These messages are POSTED, hence audio switching will
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* be asynchronous. The timing depends on various factors: machine load,
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* video speed, etc.. We should probably do this via RegisterWindowMessage
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*/
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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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// messages sent to winproc thread - set up using RegisterWindowMessage
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// in drvproc.c
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#define AVIM_DESTROY (WM_USER+103)
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#define AVIM_SHOWSTAGE (WM_USER+104)
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//#define AVIM_DESTROY (mAVIM_DESTROY)
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//#define AVIM_SHOWSTAGE (mAVIM_SHOWSTAGE)
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//extern UINT mAVIM_DESTROY;
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//extern UINT mAVIM_SHOWSTAGE;
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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 aviTaskCheckRequests(NPMCIGRAPHIC npMCI);
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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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//
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// try to set the dest or source rect without stopping play.
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// called both at stop time and at play time
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//
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// returns TRUE if stop needed, or else FALSE if all handled.
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// lpdwErr is set to a non-zero error if any error occured (in which case
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// FALSE will be returned.
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//
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BOOL TryPutRect(NPMCIGRAPHIC npMCI, DWORD dwFlags, LPRECT lprc, LPDWORD lpdwErr);
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// called on worker thread only
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DWORD InternalSetVolume(NPMCIGRAPHIC npMCI, DWORD dwVolume);
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DWORD InternalGetVolume(NPMCIGRAPHIC npMCI);
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DWORD Internal_Update(NPMCIGRAPHIC npMCI, DWORD dwFlags, HDC hdc, LPRECT lprc);
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// called on winproc or worker thread
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DWORD InternalRealize(NPMCIGRAPHIC npMCI);
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BOOL TryStreamUpdate(
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NPMCIGRAPHIC npMCI,
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DWORD dwFlags,
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HDC hdc,
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LPRECT lprc
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);
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// called to release the synchronous portion of a command
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void TaskReturns(NPMCIGRAPHIC npMCI, DWORD dwErr);
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