mirror of
https://github.com/reactos/reactos.git
synced 2024-09-14 06:42:52 +00:00
d25d9ea618
- Enable experimental sound support (only PC speaker for the moment, aka. uses beep.sys). - Introduce a #define WORKING_TIMER which aim is to disable the currently problematic approximate performance counter value calculation done in order not to call QueryPerformanceCounter each time. The problem is that we then compute a number of clock ticks for the PIT, which becomes negative, and therefore everything starts to hang. Disabling this code and calling each time QueryPerformanceCounter, fixes everything; we gain in precision but we loose in performance... A definitive fix must be found, [TheFlash] !! This fixes sound (and hangs) in Advanced NetWars, Dangerous Dave, ElitePlus and Rescue Rover (the games that I've tested so far). svn path=/branches/ntvdm/; revision=61875
146 lines
4.5 KiB
C
146 lines
4.5 KiB
C
/*
|
|
* COPYRIGHT: GPL - See COPYING in the top level directory
|
|
* PROJECT: ReactOS Virtual DOS Machine
|
|
* FILE: speaker.c
|
|
* PURPOSE: PC Speaker emulation
|
|
* PROGRAMMERS: Hermes Belusca-Maito (hermes.belusca@sfr.fr)
|
|
*/
|
|
|
|
/* INCLUDES *******************************************************************/
|
|
|
|
#define NDEBUG
|
|
|
|
#include "emulator.h"
|
|
#include "speaker.h"
|
|
#include "io.h"
|
|
#include "timer.h"
|
|
|
|
/* Extra PSDK/NDK Headers */
|
|
#include <ndk/iofuncs.h>
|
|
#include <ndk/obfuncs.h>
|
|
#include <ndk/rtlfuncs.h>
|
|
|
|
/* DDK Driver Headers */
|
|
#include <ntddbeep.h>
|
|
|
|
/* PRIVATE VARIABLES **********************************************************/
|
|
|
|
static HANDLE hBeep = NULL;
|
|
|
|
/* PRIVATE FUNCTIONS **********************************************************/
|
|
|
|
/* PUBLIC FUNCTIONS ***********************************************************/
|
|
|
|
VOID SpeakerChange(VOID)
|
|
{
|
|
BYTE Port61hState = IOReadB(CONTROL_SYSTEM_PORT61H);
|
|
BOOLEAN IsConnectedToPITChannel2 = !!(Port61hState & 0x01);
|
|
BOOLEAN SpeakerDataOn = !!(Port61hState & 0x02);
|
|
|
|
if (PitChannel2 && IsConnectedToPITChannel2 && SpeakerDataOn)
|
|
{
|
|
/* Start beeping - Adapted from kernel32:Beep() */
|
|
NTSTATUS Status;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
BEEP_SET_PARAMETERS BeepSetParameters;
|
|
|
|
DWORD PitChannel2ReloadValue = PitChannel2->ReloadValue;
|
|
if (PitChannel2ReloadValue == 0) PitChannel2ReloadValue = 65536;
|
|
|
|
/* Set beep data */
|
|
BeepSetParameters.Frequency = (PIT_BASE_FREQUENCY / PitChannel2ReloadValue) *
|
|
(PitChannel2->Mode == PIT_MODE_SQUARE_WAVE ? 2 : 1);
|
|
BeepSetParameters.Duration = INFINITE;
|
|
|
|
/* Send the beep */
|
|
Status = NtDeviceIoControlFile(hBeep,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatusBlock,
|
|
IOCTL_BEEP_SET,
|
|
&BeepSetParameters,
|
|
sizeof(BeepSetParameters),
|
|
NULL,
|
|
0);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("Beep (%lu, %lu) failed, Status 0x%08lx\n",
|
|
BeepSetParameters.Frequency,
|
|
BeepSetParameters.Duration,
|
|
Status);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Stop beeping */
|
|
NTSTATUS Status;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
BEEP_SET_PARAMETERS BeepSetParameters;
|
|
|
|
/* Set beep data */
|
|
BeepSetParameters.Frequency = 0x00;
|
|
BeepSetParameters.Duration = 0x00;
|
|
|
|
/* Send the beep */
|
|
Status = NtDeviceIoControlFile(hBeep,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatusBlock,
|
|
IOCTL_BEEP_SET,
|
|
&BeepSetParameters,
|
|
sizeof(BeepSetParameters),
|
|
NULL,
|
|
0);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("Beep (%lu, %lu) failed, Status 0x%08lx\n",
|
|
BeepSetParameters.Frequency,
|
|
BeepSetParameters.Duration,
|
|
Status);
|
|
}
|
|
}
|
|
}
|
|
|
|
VOID SpeakerInitialize(VOID)
|
|
{
|
|
NTSTATUS Status;
|
|
UNICODE_STRING BeepDevice;
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
|
|
/* Adapted from kernel32:Beep() */
|
|
|
|
//
|
|
// On TS systems, we need to Load Winsta.dll and call WinstationBeepOpen
|
|
// after doing a GetProcAddress for it
|
|
//
|
|
|
|
/* Open the device */
|
|
RtlInitUnicodeString(&BeepDevice, L"\\Device\\Beep");
|
|
InitializeObjectAttributes(&ObjectAttributes, &BeepDevice, 0, NULL, NULL);
|
|
Status = NtCreateFile(&hBeep,
|
|
FILE_READ_DATA | FILE_WRITE_DATA,
|
|
&ObjectAttributes,
|
|
&IoStatusBlock,
|
|
NULL,
|
|
0,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE,
|
|
FILE_OPEN_IF,
|
|
0,
|
|
NULL,
|
|
0);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("Failed to open Beep driver, Status 0x%08lx\n", Status);
|
|
}
|
|
}
|
|
|
|
VOID SpeakerCleanup(VOID)
|
|
{
|
|
NtClose(hBeep);
|
|
}
|
|
|
|
/* EOF */
|