ReactOS  0.4.15-dev-5112-g22d8c0f
speaker.h File Reference
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Functions

VOID SpeakerChange (UCHAR Port61hValue)
 
VOID SpeakerInitialize (VOID)
 
VOID SpeakerCleanup (VOID)
 

Function Documentation

◆ SpeakerChange()

VOID SpeakerChange ( UCHAR  Port61hValue)

Definition at line 196 of file speaker.c.

197 {
198  static BOOLEAN OldSpeakerOff = TRUE;
199 
200  BOOLEAN Timer2Gate = !!(Port61hValue & 0x01);
201  BOOLEAN SpeakerOn = !!(Port61hValue & 0x02);
202 
203  DPRINT("SpeakerChange -- Timer2Gate == %s ; SpeakerOn == %s\n",
204  Timer2Gate ? "true" : "false", SpeakerOn ? "true" : "false");
205 
206  if (Timer2Gate)
207  {
208  if (SpeakerOn)
209  {
210  /* Start beeping */
213  Frequency = 0;
214 
216  }
217  else
218  {
219  /* Stop beeping */
220  MakeBeep(0, 0);
221  }
222  }
223  else
224  {
225  if (SpeakerOn)
226  {
227  if (OldSpeakerOff)
228  {
229  OldSpeakerOff = FALSE;
230  PulseSample();
231  }
232 
235  else if (CountStart.QuadPart != 0)
236  MakeBeep(CLICK_FREQ, 1); /* Click */
237  else
238  MakeBeep(0, 0); /* Stop beeping */
239  }
240  else
241  {
242  OldSpeakerOff = TRUE;
243 
244  /*
245  * Check how far away was the previous pulse and if
246  * it was >= (200 + eps) ms away then stop beeping.
247  */
249  {
250  CountStart.QuadPart = 0;
251  FreqPulses = 0;
252 
253  /* Stop beeping */
254  MakeBeep(0, 0);
255  }
256  }
257  }
258 }
static VOID PulseSample(VOID)
Definition: speaker.c:93
#define TRUE
Definition: types.h:120
DWORD WINAPI GetTickCount(VOID)
Definition: time.c:455
#define MIN_AUDIBLE_FREQ
Definition: speaker.c:35
#define FALSE
Definition: types.h:117
unsigned char BOOLEAN
#define SPEAKER_RESPONSE
Definition: speaker.c:33
WORD PitGetReloadValue(BYTE Channel)
Definition: pit.c:493
static ULONG FreqPulses
Definition: speaker.c:31
#define CLICK_FREQ
Definition: speaker.c:37
static LARGE_INTEGER CountStart
Definition: speaker.c:30
static VOID MakeBeep(ULONG Frequency, ULONG Duration)
Definition: speaker.c:44
#define PIT_BASE_FREQUENCY
Definition: pit.h:17
static ULONG PulseTickCount
Definition: speaker.c:31
#define MAX_AUDIBLE_FREQ
Definition: speaker.c:36
static LARGE_INTEGER Frequency
Definition: clock.c:41
unsigned int ULONG
Definition: retypes.h:1
#define DPRINT
Definition: sndvol32.h:71
#define INFINITE
Definition: serial.h:102
LONGLONG QuadPart
Definition: typedefs.h:114

Referenced by PitChan2Out(), and Port61hWrite().

◆ SpeakerCleanup()

VOID SpeakerCleanup ( VOID  )

Definition at line 295 of file speaker.c.

296 {
297  NtClose(hBeep);
298 }
NTSTATUS NTAPI NtClose(IN HANDLE Handle)
Definition: obhandle.c:3402
static HANDLE hBeep
Definition: speaker.c:28

Referenced by EmulatorCleanup().

◆ SpeakerInitialize()

VOID SpeakerInitialize ( VOID  )

Definition at line 260 of file speaker.c.

261 {
263  UNICODE_STRING BeepDevice;
266 
267  /* Retrieve the performance frequency and initialize the timer ticks */
269  if (FreqCount.QuadPart == 0)
270  {
271  wprintf(L"FATAL: Performance counter not available\n");
272  }
273 
274  /* Open the BEEP device */
275  RtlInitUnicodeString(&BeepDevice, L"\\Device\\Beep");
280  &IoStatusBlock,
281  NULL,
282  0,
284  FILE_OPEN_IF,
285  0,
286  NULL,
287  0);
288  if (!NT_SUCCESS(Status))
289  {
290  DPRINT1("Failed to open the Beep driver, Status 0x%08lx\n", Status);
291  // hBeep = INVALID_HANDLE_VALUE;
292  }
293 }
IN PUNICODE_STRING IN POBJECT_ATTRIBUTES ObjectAttributes
Definition: conport.c:35
static LARGE_INTEGER FreqCount
Definition: speaker.c:30
#define FILE_OPEN_IF
Definition: from_kernel.h:56
LONG NTSTATUS
Definition: precomp.h:26
NTSTATUS NTAPI NtQueryPerformanceCounter(OUT PLARGE_INTEGER PerformanceCounter, OUT PLARGE_INTEGER PerformanceFrequency OPTIONAL)
Definition: profile.c:272
#define FILE_SHARE_WRITE
Definition: nt_native.h:681
#define wprintf(...)
Definition: whoami.c:18
#define FILE_SHARE_READ
Definition: compat.h:136
#define L(x)
Definition: ntvdm.h:50
#define FILE_READ_DATA
Definition: nt_native.h:628
#define FILE_WRITE_DATA
Definition: nt_native.h:631
Status
Definition: gdiplustypes.h:24
NTSTATUS NTAPI NtCreateFile(OUT PHANDLE FileHandle, IN ACCESS_MASK DesiredAccess, IN POBJECT_ATTRIBUTES ObjectAttributes, OUT PIO_STATUS_BLOCK IoStatusBlock, IN PLARGE_INTEGER AllocationSize OPTIONAL, IN ULONG FileAttributes, IN ULONG ShareAccess, IN ULONG CreateDisposition, IN ULONG CreateOptions, IN PVOID EaBuffer OPTIONAL, IN ULONG EaLength)
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
static LARGE_INTEGER CountStart
Definition: speaker.c:30
static OUT PIO_STATUS_BLOCK IoStatusBlock
Definition: pipe.c:75
#define NULL
Definition: types.h:112
#define DPRINT1
Definition: precomp.h:8
static HANDLE hBeep
Definition: speaker.c:28
NTSYSAPI VOID NTAPI RtlInitUnicodeString(PUNICODE_STRING DestinationString, PCWSTR SourceString)
#define InitializeObjectAttributes(p, n, a, r, s)
Definition: reg.c:106
LONGLONG QuadPart
Definition: typedefs.h:114

Referenced by EmulatorInitialize().