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Diffstat (limited to 'pd/portaudio_v18/pa_win_ds/pa_dsound.c')
-rw-r--r--pd/portaudio_v18/pa_win_ds/pa_dsound.c1042
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diff --git a/pd/portaudio_v18/pa_win_ds/pa_dsound.c b/pd/portaudio_v18/pa_win_ds/pa_dsound.c
deleted file mode 100644
index 52532625..00000000
--- a/pd/portaudio_v18/pa_win_ds/pa_dsound.c
+++ /dev/null
@@ -1,1042 +0,0 @@
-/*
- * $Id: pa_dsound.c,v 1.2.4.1 2002/11/19 20:46:06 philburk Exp $
- * PortAudio Portable Real-Time Audio Library
- * Latest Version at: http://www.softsynth.com/portaudio/
- * DirectSound Implementation
- *
- * Copyright (c) 1999-2000 Phil Burk
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files
- * (the "Software"), to deal in the Software without restriction,
- * including without limitation the rights to use, copy, modify, merge,
- * publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so,
- * subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * Any person wishing to distribute modifications to the Software is
- * requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
- * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- */
-/* Modifications
- * 7/19/01 Mike Berry - casts for compiling with __MWERKS__ CodeWarrior
- * 9/27/01 Phil Burk - use number of frames instead of real-time for CPULoad calculation.
- * 4/19/02 Phil Burk - Check for Win XP for system latency calculation.
- */
-/* Compiler flags:
- SUPPORT_AUDIO_CAPTURE - define this flag if you want to SUPPORT_AUDIO_CAPTURE
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#ifndef __MWERKS__
-#include <malloc.h>
-#include <memory.h>
-#endif //__MWERKS__
-#include <math.h>
-#include "portaudio.h"
-#include "pa_host.h"
-#include "pa_trace.h"
-#include "dsound_wrapper.h"
-
-#define PRINT(x) { printf x; fflush(stdout); }
-#define ERR_RPT(x) PRINT(x)
-#define DBUG(x) /* PRINT(x) */
-#define DBUGX(x) /* PRINT(x) */
-
-#define PA_USE_HIGH_LATENCY (0)
-#if PA_USE_HIGH_LATENCY
-#define PA_WIN_9X_LATENCY (500)
-#define PA_WIN_NT_LATENCY (600)
-#else
-#define PA_WIN_9X_LATENCY (140)
-#define PA_WIN_NT_LATENCY (280)
-#endif
-
-#define PA_WIN_WDM_LATENCY (120)
-
-/* Trigger an underflow for testing purposes. Should normally be (0). */
-#define PA_SIMULATE_UNDERFLOW (0)
-#if PA_SIMULATE_UNDERFLOW
-static gUnderCallbackCounter = 0;
-#define UNDER_START_GAP (10)
-#define UNDER_STOP_GAP (UNDER_START_GAP + 4)
-#endif
-
-/************************************************* Definitions ********/
-typedef struct internalPortAudioStream internalPortAudioStream;
-typedef struct internalPortAudioDevice
-{
- GUID pad_GUID;
- GUID *pad_lpGUID;
- double pad_SampleRates[10]; /* for pointing to from pad_Info FIXME?!*/
- PaDeviceInfo pad_Info;
-}
-internalPortAudioDevice;
-
-/* Define structure to contain all DirectSound and Windows specific data. */
-typedef struct PaHostSoundControl
-{
- DSoundWrapper pahsc_DSoundWrapper;
- MMRESULT pahsc_TimerID;
- BOOL pahsc_IfInsideCallback; /* Test for reentrancy. */
- short *pahsc_NativeBuffer;
- unsigned int pahsc_BytesPerBuffer; /* native buffer size in bytes */
- double pahsc_ValidFramesWritten;
- int pahsc_FramesPerDSBuffer;
- /* For measuring CPU utilization. */
- LARGE_INTEGER pahsc_EntryCount;
- double pahsc_InverseTicksPerUserBuffer;
-}
-PaHostSoundControl;
-
-/************************************************* Shared Data ********/
-/* FIXME - put Mutex around this shared data. */
-static int sNumDevices = 0;
-static int sDeviceIndex = 0;
-static internalPortAudioDevice *sDevices = NULL;
-static int sDefaultInputDeviceID = paNoDevice;
-static int sDefaultOutputDeviceID = paNoDevice;
-static int sEnumerationError;
-static int sPaHostError = 0;
-/************************************************* Prototypes **********/
-static internalPortAudioDevice *Pa_GetInternalDevice( PaDeviceID id );
-static BOOL CALLBACK Pa_EnumProc(LPGUID lpGUID,
- LPCTSTR lpszDesc,
- LPCTSTR lpszDrvName,
- LPVOID lpContext );
-static BOOL CALLBACK Pa_CountDevProc(LPGUID lpGUID,
- LPCTSTR lpszDesc,
- LPCTSTR lpszDrvName,
- LPVOID lpContext );
-static Pa_QueryDevices( void );
-static void CALLBACK Pa_TimerCallback(UINT uID, UINT uMsg,
- DWORD dwUser, DWORD dw1, DWORD dw2);
-
-/********************************* BEGIN CPU UTILIZATION MEASUREMENT ****/
-static void Pa_StartUsageCalculation( internalPortAudioStream *past )
-{
- PaHostSoundControl *pahsc = (PaHostSoundControl *) past->past_DeviceData;
- if( pahsc == NULL ) return;
- /* Query system timer for usage analysis and to prevent overuse of CPU. */
- QueryPerformanceCounter( &pahsc->pahsc_EntryCount );
-}
-
-static void Pa_EndUsageCalculation( internalPortAudioStream *past )
-{
- LARGE_INTEGER CurrentCount = { 0, 0 };
- PaHostSoundControl *pahsc = (PaHostSoundControl *) past->past_DeviceData;
- if( pahsc == NULL ) return;
- /*
- ** Measure CPU utilization during this callback. Note that this calculation
- ** assumes that we had the processor the whole time.
- */
-#define LOWPASS_COEFFICIENT_0 (0.9)
-#define LOWPASS_COEFFICIENT_1 (0.99999 - LOWPASS_COEFFICIENT_0)
- if( QueryPerformanceCounter( &CurrentCount ) )
- {
- LONGLONG InsideCount = CurrentCount.QuadPart - pahsc->pahsc_EntryCount.QuadPart;
- double newUsage = InsideCount * pahsc->pahsc_InverseTicksPerUserBuffer;
- past->past_Usage = (LOWPASS_COEFFICIENT_0 * past->past_Usage) +
- (LOWPASS_COEFFICIENT_1 * newUsage);
- }
-}
-
-/****************************************** END CPU UTILIZATION *******/
-static PaError Pa_QueryDevices( void )
-{
- int numBytes;
- sDefaultInputDeviceID = paNoDevice;
- sDefaultOutputDeviceID = paNoDevice;
- /* Enumerate once just to count devices. */
- sNumDevices = 0; // for default device
- DirectSoundEnumerate( (LPDSENUMCALLBACK)Pa_CountDevProc, NULL );
-#if SUPPORT_AUDIO_CAPTURE
- DirectSoundCaptureEnumerate( (LPDSENUMCALLBACK)Pa_CountDevProc, NULL );
-#endif /* SUPPORT_AUDIO_CAPTURE */
- /* Allocate structures to hold device info. */
- numBytes = sNumDevices * sizeof(internalPortAudioDevice);
- sDevices = (internalPortAudioDevice *)PaHost_AllocateFastMemory( numBytes ); /* MEM */
- if( sDevices == NULL ) return paInsufficientMemory;
- /* Enumerate again to fill in structures. */
- sDeviceIndex = 0;
- sEnumerationError = 0;
- DirectSoundEnumerate( (LPDSENUMCALLBACK)Pa_EnumProc, (void *)0 );
-#if SUPPORT_AUDIO_CAPTURE
- if( sEnumerationError != paNoError ) return sEnumerationError;
- sEnumerationError = 0;
- DirectSoundCaptureEnumerate( (LPDSENUMCALLBACK)Pa_EnumProc, (void *)1 );
-#endif /* SUPPORT_AUDIO_CAPTURE */
- return sEnumerationError;
-}
-/************************************************************************************/
-long Pa_GetHostError()
-{
- return sPaHostError;
-}
-/************************************************************************************
-** Just count devices so we know how much memory to allocate.
-*/
-static BOOL CALLBACK Pa_CountDevProc(LPGUID lpGUID,
- LPCTSTR lpszDesc,
- LPCTSTR lpszDrvName,
- LPVOID lpContext )
-{
- sNumDevices++;
- return TRUE;
-}
-/************************************************************************************
-** Extract capabilities info from each device.
-*/
-static BOOL CALLBACK Pa_EnumProc(LPGUID lpGUID,
- LPCTSTR lpszDesc,
- LPCTSTR lpszDrvName,
- LPVOID lpContext )
-{
- HRESULT hr;
- LPDIRECTSOUND lpDirectSound;
-#if SUPPORT_AUDIO_CAPTURE
- LPDIRECTSOUNDCAPTURE lpDirectSoundCapture;
-#endif /* SUPPORT_AUDIO_CAPTURE */
- int isInput = (int) lpContext; /* Passed from Pa_CountDevices() */
- internalPortAudioDevice *pad;
-
- if( sDeviceIndex >= sNumDevices )
- {
- sEnumerationError = paInternalError;
- return FALSE;
- }
- pad = &sDevices[sDeviceIndex];
- /* Copy GUID to static array. Set pointer. */
- if( lpGUID == NULL )
- {
- pad->pad_lpGUID = NULL;
- }
- else
- {
- memcpy( &pad->pad_GUID, lpGUID, sizeof(GUID) );
- pad->pad_lpGUID = &pad->pad_GUID;
- }
- pad->pad_Info.sampleRates = pad->pad_SampleRates; /* Point to array. */
- /* Allocate room for descriptive name. */
- if( lpszDesc != NULL )
- {
- int len = strlen(lpszDesc);
- pad->pad_Info.name = (char *)malloc( len+1 );
- if( pad->pad_Info.name == NULL )
- {
- sEnumerationError = paInsufficientMemory;
- return FALSE;
- }
- memcpy( (void *) pad->pad_Info.name, lpszDesc, len+1 );
- }
-#if SUPPORT_AUDIO_CAPTURE
- if( isInput )
- {
- /********** Input ******************************/
- DSCCAPS caps;
- if( lpGUID == NULL ) sDefaultInputDeviceID = sDeviceIndex;
- hr = DirectSoundCaptureCreate( lpGUID, &lpDirectSoundCapture, NULL );
- if( hr != DS_OK )
- {
- pad->pad_Info.maxInputChannels = 0;
- DBUG(("Cannot create Capture for %s. Result = 0x%x\n", lpszDesc, hr ));
- }
- else
- {
- /* Query device characteristics. */
- caps.dwSize = sizeof(caps);
- IDirectSoundCapture_GetCaps( lpDirectSoundCapture, &caps );
- /* printf("caps.dwFormats = 0x%x\n", caps.dwFormats ); */
- pad->pad_Info.maxInputChannels = caps.dwChannels;
- /* Determine sample rates from flags. */
- if( caps.dwChannels == 2 )
- {
- int index = 0;
- if( caps.dwFormats & WAVE_FORMAT_1S16) pad->pad_SampleRates[index++] = 11025.0;
- if( caps.dwFormats & WAVE_FORMAT_2S16) pad->pad_SampleRates[index++] = 22050.0;
- if( caps.dwFormats & WAVE_FORMAT_4S16) pad->pad_SampleRates[index++] = 44100.0;
- pad->pad_Info.numSampleRates = index;
- }
- else if( caps.dwChannels == 1 )
- {
- int index = 0;
- if( caps.dwFormats & WAVE_FORMAT_1M16) pad->pad_SampleRates[index++] = 11025.0;
- if( caps.dwFormats & WAVE_FORMAT_2M16) pad->pad_SampleRates[index++] = 22050.0;
- if( caps.dwFormats & WAVE_FORMAT_4M16) pad->pad_SampleRates[index++] = 44100.0;
- pad->pad_Info.numSampleRates = index;
- }
- else pad->pad_Info.numSampleRates = 0;
- IDirectSoundCapture_Release( lpDirectSoundCapture );
- }
- }
- else
-#endif /* SUPPORT_AUDIO_CAPTURE */
-
- {
- /********** Output ******************************/
- DSCAPS caps;
- if( lpGUID == NULL ) sDefaultOutputDeviceID = sDeviceIndex;
- /* Create interfaces for each object. */
- hr = DirectSoundCreate( lpGUID, &lpDirectSound, NULL );
- if( hr != DS_OK )
- {
- pad->pad_Info.maxOutputChannels = 0;
- DBUG(("Cannot create dsound for %s. Result = 0x%x\n", lpszDesc, hr ));
- }
- else
- {
- /* Query device characteristics. */
- caps.dwSize = sizeof(caps);
- IDirectSound_GetCaps( lpDirectSound, &caps );
- pad->pad_Info.maxOutputChannels = ( caps.dwFlags & DSCAPS_PRIMARYSTEREO ) ? 2 : 1;
- /* Get sample rates. */
- pad->pad_SampleRates[0] = (double) caps.dwMinSecondarySampleRate;
- pad->pad_SampleRates[1] = (double) caps.dwMaxSecondarySampleRate;
- if( caps.dwFlags & DSCAPS_CONTINUOUSRATE ) pad->pad_Info.numSampleRates = -1;
- else if( caps.dwMinSecondarySampleRate == caps.dwMaxSecondarySampleRate )
- {
- if( caps.dwMinSecondarySampleRate == 0 )
- {
- /*
- ** On my Thinkpad 380Z, DirectSoundV6 returns min-max=0 !!
- ** But it supports continuous sampling.
- ** So fake range of rates, and hope it really supports it.
- */
- pad->pad_SampleRates[0] = 11025.0f;
- pad->pad_SampleRates[1] = 48000.0f;
- pad->pad_Info.numSampleRates = -1; /* continuous range */
-
- DBUG(("PA - Reported rates both zero. Setting to fake values for device #%d\n", sDeviceIndex ));
- }
- else
- {
- pad->pad_Info.numSampleRates = 1;
- }
- }
- else if( (caps.dwMinSecondarySampleRate < 1000.0) && (caps.dwMaxSecondarySampleRate > 50000.0) )
- {
- /* The EWS88MT drivers lie, lie, lie. The say they only support two rates, 100 & 100000.
- ** But we know that they really support a range of rates!
- ** So when we see a ridiculous set of rates, assume it is a range.
- */
- pad->pad_Info.numSampleRates = -1;
- DBUG(("PA - Sample rate range used instead of two odd values for device #%d\n", sDeviceIndex ));
- }
- else pad->pad_Info.numSampleRates = 2;
- IDirectSound_Release( lpDirectSound );
- }
- }
- pad->pad_Info.nativeSampleFormats = paInt16;
- sDeviceIndex++;
- return( TRUE );
-}
-/*************************************************************************/
-int Pa_CountDevices()
-{
- if( sNumDevices <= 0 ) Pa_Initialize();
- return sNumDevices;
-}
-static internalPortAudioDevice *Pa_GetInternalDevice( PaDeviceID id )
-{
- if( (id < 0) || ( id >= Pa_CountDevices()) ) return NULL;
- return &sDevices[id];
-}
-/*************************************************************************/
-const PaDeviceInfo* Pa_GetDeviceInfo( PaDeviceID id )
-{
- internalPortAudioDevice *pad;
- if( (id < 0) || ( id >= Pa_CountDevices()) ) return NULL;
- pad = Pa_GetInternalDevice( id );
- return &pad->pad_Info ;
-}
-static PaError Pa_MaybeQueryDevices( void )
-{
- if( sNumDevices == 0 )
- {
- return Pa_QueryDevices();
- }
- return 0;
-}
-/*************************************************************************
-** Returns recommended device ID.
-** On the PC, the recommended device can be specified by the user by
-** setting an environment variable. For example, to use device #1.
-**
-** set PA_RECOMMENDED_OUTPUT_DEVICE=1
-**
-** The user should first determine the available device ID by using
-** the supplied application "pa_devs".
-*/
-#define PA_ENV_BUF_SIZE (32)
-#define PA_REC_IN_DEV_ENV_NAME ("PA_RECOMMENDED_INPUT_DEVICE")
-#define PA_REC_OUT_DEV_ENV_NAME ("PA_RECOMMENDED_OUTPUT_DEVICE")
-static PaDeviceID PaHost_GetEnvDefaultDeviceID( char *envName )
-{
- DWORD hresult;
- char envbuf[PA_ENV_BUF_SIZE];
- PaDeviceID recommendedID = paNoDevice;
- /* Let user determine default device by setting environment variable. */
- hresult = GetEnvironmentVariable( envName, envbuf, PA_ENV_BUF_SIZE );
- if( (hresult > 0) && (hresult < PA_ENV_BUF_SIZE) )
- {
- recommendedID = atoi( envbuf );
- }
- return recommendedID;
-}
-PaDeviceID Pa_GetDefaultInputDeviceID( void )
-{
- PaError result;
- result = PaHost_GetEnvDefaultDeviceID( PA_REC_IN_DEV_ENV_NAME );
- if( result < 0 )
- {
- result = Pa_MaybeQueryDevices();
- if( result < 0 ) return result;
- result = sDefaultInputDeviceID;
- }
- return result;
-}
-PaDeviceID Pa_GetDefaultOutputDeviceID( void )
-{
- PaError result;
- result = PaHost_GetEnvDefaultDeviceID( PA_REC_OUT_DEV_ENV_NAME );
- if( result < 0 )
- {
- result = Pa_MaybeQueryDevices();
- if( result < 0 ) return result;
- result = sDefaultOutputDeviceID;
- }
- return result;
-}
-/**********************************************************************
-** Make sure that we have queried the device capabilities.
-*/
-PaError PaHost_Init( void )
-{
-#if PA_SIMULATE_UNDERFLOW
- PRINT(("WARNING - Underflow Simulation Enabled - Expect a Big Glitch!!!\n"));
-#endif
- return Pa_MaybeQueryDevices();
-}
-static PaError Pa_TimeSlice( internalPortAudioStream *past )
-{
- PaError result = 0;
- long bytesEmpty = 0;
- long bytesFilled = 0;
- long bytesToXfer = 0;
- long numChunks;
- HRESULT hresult;
- PaHostSoundControl *pahsc;
- short *nativeBufPtr;
- past->past_NumCallbacks += 1;
- pahsc = (PaHostSoundControl *) past->past_DeviceData;
- if( pahsc == NULL ) return paInternalError;
- /* How much input data is available? */
-#if SUPPORT_AUDIO_CAPTURE
- if( past->past_NumInputChannels > 0 )
- {
- DSW_QueryInputFilled( &pahsc->pahsc_DSoundWrapper, &bytesFilled );
- bytesToXfer = bytesFilled;
- }
-#endif /* SUPPORT_AUDIO_CAPTURE */
- /* How much output room is available? */
- if( past->past_NumOutputChannels > 0 )
- {
- DSW_QueryOutputSpace( &pahsc->pahsc_DSoundWrapper, &bytesEmpty );
- bytesToXfer = bytesEmpty;
- }
- AddTraceMessage( "bytesEmpty ", bytesEmpty );
- /* Choose smallest value if both are active. */
- if( (past->past_NumInputChannels > 0) && (past->past_NumOutputChannels > 0) )
- {
- bytesToXfer = ( bytesFilled < bytesEmpty ) ? bytesFilled : bytesEmpty;
- }
- /* printf("bytesFilled = %d, bytesEmpty = %d, bytesToXfer = %d\n",
- bytesFilled, bytesEmpty, bytesToXfer);
- */
- /* Quantize to multiples of a buffer. */
- numChunks = bytesToXfer / pahsc->pahsc_BytesPerBuffer;
- if( numChunks > (long)(past->past_NumUserBuffers/2) )
- {
- numChunks = (long)past->past_NumUserBuffers/2;
- }
- else if( numChunks < 0 )
- {
- numChunks = 0;
- }
- AddTraceMessage( "numChunks ", numChunks );
- nativeBufPtr = pahsc->pahsc_NativeBuffer;
- if( numChunks > 0 )
- {
- while( numChunks-- > 0 )
- {
- /* Measure usage based on time to process one user buffer. */
- Pa_StartUsageCalculation( past );
-#if SUPPORT_AUDIO_CAPTURE
- /* Get native data from DirectSound. */
- if( past->past_NumInputChannels > 0 )
- {
- hresult = DSW_ReadBlock( &pahsc->pahsc_DSoundWrapper, (char *) nativeBufPtr, pahsc->pahsc_BytesPerBuffer );
- if( hresult < 0 )
- {
- ERR_RPT(("DirectSound ReadBlock failed, hresult = 0x%x\n",hresult));
- sPaHostError = hresult;
- break;
- }
- }
-#endif /* SUPPORT_AUDIO_CAPTURE */
- /* Convert 16 bit native data to user data and call user routine. */
- result = Pa_CallConvertInt16( past, nativeBufPtr, nativeBufPtr );
- if( result != 0) break;
- /* Pass native data to DirectSound. */
- if( past->past_NumOutputChannels > 0 )
- {
- /* static short DEBUGHACK = 0;
- DEBUGHACK += 0x0049;
- nativeBufPtr[0] = DEBUGHACK; /* Make buzz to see if DirectSound still running. */
- hresult = DSW_WriteBlock( &pahsc->pahsc_DSoundWrapper, (char *) nativeBufPtr, pahsc->pahsc_BytesPerBuffer );
- if( hresult < 0 )
- {
- ERR_RPT(("DirectSound WriteBlock failed, result = 0x%x\n",hresult));
- sPaHostError = hresult;
- break;
- }
- }
- Pa_EndUsageCalculation( past );
- }
- }
- return result;
-}
-/*******************************************************************/
-static void CALLBACK Pa_TimerCallback(UINT uID, UINT uMsg, DWORD dwUser, DWORD dw1, DWORD dw2)
-{
- internalPortAudioStream *past;
- PaHostSoundControl *pahsc;
-#if PA_SIMULATE_UNDERFLOW
- gUnderCallbackCounter++;
- if( (gUnderCallbackCounter >= UNDER_START_GAP) &&
- (gUnderCallbackCounter <= UNDER_STOP_GAP) )
- {
- if( gUnderCallbackCounter == UNDER_START_GAP)
- {
- AddTraceMessage("Begin stall: gUnderCallbackCounter =======", gUnderCallbackCounter );
- }
- if( gUnderCallbackCounter == UNDER_STOP_GAP)
- {
- AddTraceMessage("End stall: gUnderCallbackCounter =======", gUnderCallbackCounter );
- }
- return;
- }
-#endif
- past = (internalPortAudioStream *) dwUser;
- if( past == NULL ) return;
- pahsc = (PaHostSoundControl *) past->past_DeviceData;
- if( pahsc == NULL ) return;
- if( !pahsc->pahsc_IfInsideCallback && past->past_IsActive )
- {
- if( past->past_StopNow )
- {
- past->past_IsActive = 0;
- }
- else if( past->past_StopSoon )
- {
- DSoundWrapper *dsw = &pahsc->pahsc_DSoundWrapper;
- if( past->past_NumOutputChannels > 0 )
- {
- DSW_ZeroEmptySpace( dsw );
- AddTraceMessage("Pa_TimerCallback: waiting - written ", (int) dsw->dsw_FramesWritten );
- AddTraceMessage("Pa_TimerCallback: waiting - played ", (int) dsw->dsw_FramesPlayed );
- /* clear past_IsActive when all sound played */
- if( dsw->dsw_FramesPlayed >= past->past_FrameCount )
- {
- past->past_IsActive = 0;
- }
- }
- else
- {
- past->past_IsActive = 0;
- }
- }
- else
- {
- pahsc->pahsc_IfInsideCallback = 1;
- if( Pa_TimeSlice( past ) != 0) /* Call time slice independant of timing method. */
- {
- past->past_StopSoon = 1;
- }
- pahsc->pahsc_IfInsideCallback = 0;
- }
- }
-}
-/*******************************************************************/
-PaError PaHost_OpenStream( internalPortAudioStream *past )
-{
- HRESULT hr;
- PaError result = paNoError;
- PaHostSoundControl *pahsc;
- int numBytes, maxChannels;
- unsigned int minNumBuffers;
- internalPortAudioDevice *pad;
- DSoundWrapper *dsw;
- /* Allocate and initialize host data. */
- pahsc = (PaHostSoundControl *) PaHost_AllocateFastMemory(sizeof(PaHostSoundControl)); /* MEM */
- if( pahsc == NULL )
- {
- result = paInsufficientMemory;
- goto error;
- }
- memset( pahsc, 0, sizeof(PaHostSoundControl) );
- past->past_DeviceData = (void *) pahsc;
- pahsc->pahsc_TimerID = 0;
- dsw = &pahsc->pahsc_DSoundWrapper;
- DSW_Init( dsw );
- /* Allocate native buffer. */
- maxChannels = ( past->past_NumOutputChannels > past->past_NumInputChannels ) ?
- past->past_NumOutputChannels : past->past_NumInputChannels;
- pahsc->pahsc_BytesPerBuffer = past->past_FramesPerUserBuffer * maxChannels * sizeof(short);
- if( maxChannels > 0 )
- {
- pahsc->pahsc_NativeBuffer = (short *) PaHost_AllocateFastMemory(pahsc->pahsc_BytesPerBuffer); /* MEM */
- if( pahsc->pahsc_NativeBuffer == NULL )
- {
- result = paInsufficientMemory;
- goto error;
- }
- }
- else
- {
- result = paInvalidChannelCount;
- goto error;
- }
-
- DBUG(("PaHost_OpenStream: pahsc_MinFramesPerHostBuffer = %d\n", pahsc->pahsc_MinFramesPerHostBuffer ));
- minNumBuffers = Pa_GetMinNumBuffers( past->past_FramesPerUserBuffer, past->past_SampleRate );
- past->past_NumUserBuffers = ( minNumBuffers > past->past_NumUserBuffers ) ? minNumBuffers : past->past_NumUserBuffers;
- numBytes = pahsc->pahsc_BytesPerBuffer * past->past_NumUserBuffers;
- if( numBytes < DSBSIZE_MIN )
- {
- result = paBufferTooSmall;
- goto error;
- }
- if( numBytes > DSBSIZE_MAX )
- {
- result = paBufferTooBig;
- goto error;
- }
- pahsc->pahsc_FramesPerDSBuffer = past->past_FramesPerUserBuffer * past->past_NumUserBuffers;
- {
- int msecLatency = (int) ((pahsc->pahsc_FramesPerDSBuffer * 1000) / past->past_SampleRate);
- PRINT(("PortAudio on DirectSound - Latency = %d frames, %d msec\n", pahsc->pahsc_FramesPerDSBuffer, msecLatency ));
- }
- /* ------------------ OUTPUT */
- if( (past->past_OutputDeviceID >= 0) && (past->past_NumOutputChannels > 0) )
- {
- DBUG(("PaHost_OpenStream: deviceID = 0x%x\n", past->past_OutputDeviceID));
- pad = Pa_GetInternalDevice( past->past_OutputDeviceID );
- hr = DirectSoundCreate( pad->pad_lpGUID, &dsw->dsw_pDirectSound, NULL );
- /* If this fails, then try each output device until we find one that works. */
- if( hr != DS_OK )
- {
- int i;
- ERR_RPT(("Creation of requested Audio Output device '%s' failed.\n",
- ((pad->pad_lpGUID == NULL) ? "Default" : pad->pad_Info.name) ));
- for( i=0; i<Pa_CountDevices(); i++ )
- {
- pad = Pa_GetInternalDevice( i );
- if( pad->pad_Info.maxOutputChannels >= past->past_NumOutputChannels )
- {
- DBUG(("Try device '%s' instead.\n", pad->pad_Info.name ));
- hr = DirectSoundCreate( pad->pad_lpGUID, &dsw->dsw_pDirectSound, NULL );
- if( hr == DS_OK )
- {
- ERR_RPT(("Using device '%s' instead.\n", pad->pad_Info.name ));
- break;
- }
- }
- }
- }
- if( hr != DS_OK )
- {
- ERR_RPT(("PortAudio: DirectSoundCreate() failed!\n"));
- result = paHostError;
- sPaHostError = hr;
- goto error;
- }
- hr = DSW_InitOutputBuffer( dsw,
- (unsigned long) (past->past_SampleRate + 0.5),
- past->past_NumOutputChannels, numBytes );
- DBUG(("DSW_InitOutputBuffer() returns %x\n", hr));
- if( hr != DS_OK )
- {
- result = paHostError;
- sPaHostError = hr;
- goto error;
- }
- past->past_FrameCount = pahsc->pahsc_DSoundWrapper.dsw_FramesWritten;
- }
-#if SUPPORT_AUDIO_CAPTURE
- /* ------------------ INPUT */
- if( (past->past_InputDeviceID >= 0) && (past->past_NumInputChannels > 0) )
- {
- pad = Pa_GetInternalDevice( past->past_InputDeviceID );
- hr = DirectSoundCaptureCreate( pad->pad_lpGUID, &dsw->dsw_pDirectSoundCapture, NULL );
- /* If this fails, then try each input device until we find one that works. */
- if( hr != DS_OK )
- {
- int i;
- ERR_RPT(("Creation of requested Audio Capture device '%s' failed.\n",
- ((pad->pad_lpGUID == NULL) ? "Default" : pad->pad_Info.name) ));
- for( i=0; i<Pa_CountDevices(); i++ )
- {
- pad = Pa_GetInternalDevice( i );
- if( pad->pad_Info.maxInputChannels >= past->past_NumInputChannels )
- {
- PRINT(("Try device '%s' instead.\n", pad->pad_Info.name ));
- hr = DirectSoundCaptureCreate( pad->pad_lpGUID, &dsw->dsw_pDirectSoundCapture, NULL );
- if( hr == DS_OK ) break;
- }
- }
- }
- if( hr != DS_OK )
- {
- ERR_RPT(("PortAudio: DirectSoundCaptureCreate() failed!\n"));
- result = paHostError;
- sPaHostError = hr;
- goto error;
- }
- hr = DSW_InitInputBuffer( dsw,
- (unsigned long) (past->past_SampleRate + 0.5),
- past->past_NumInputChannels, numBytes );
- DBUG(("DSW_InitInputBuffer() returns %x\n", hr));
- if( hr != DS_OK )
- {
- ERR_RPT(("PortAudio: DSW_InitInputBuffer() returns %x\n", hr));
- result = paHostError;
- sPaHostError = hr;
- goto error;
- }
- }
-#endif /* SUPPORT_AUDIO_CAPTURE */
- /* Calculate scalar used in CPULoad calculation. */
- {
- LARGE_INTEGER frequency;
- if( QueryPerformanceFrequency( &frequency ) == 0 )
- {
- pahsc->pahsc_InverseTicksPerUserBuffer = 0.0;
- }
- else
- {
- pahsc->pahsc_InverseTicksPerUserBuffer = past->past_SampleRate /
- ( (double)frequency.QuadPart * past->past_FramesPerUserBuffer );
- DBUG(("pahsc_InverseTicksPerUserBuffer = %g\n", pahsc->pahsc_InverseTicksPerUserBuffer ));
- }
- }
- return result;
-error:
- PaHost_CloseStream( past );
- return result;
-}
-/*************************************************************************/
-PaError PaHost_StartOutput( internalPortAudioStream *past )
-{
- HRESULT hr;
- PaHostSoundControl *pahsc;
- PaError result = paNoError;
- pahsc = (PaHostSoundControl *) past->past_DeviceData;
- /* Give user callback a chance to pre-fill buffer. */
- result = Pa_TimeSlice( past );
- if( result != paNoError ) return result; // FIXME - what if finished?
- hr = DSW_StartOutput( &pahsc->pahsc_DSoundWrapper );
- DBUG(("PaHost_StartOutput: DSW_StartOutput returned = 0x%X.\n", hr));
- if( hr != DS_OK )
- {
- result = paHostError;
- sPaHostError = hr;
- goto error;
- }
-error:
- return result;
-}
-/*************************************************************************/
-PaError PaHost_StartInput( internalPortAudioStream *past )
-{
- PaError result = paNoError;
-#if SUPPORT_AUDIO_CAPTURE
- HRESULT hr;
- PaHostSoundControl *pahsc;
- pahsc = (PaHostSoundControl *) past->past_DeviceData;
- hr = DSW_StartInput( &pahsc->pahsc_DSoundWrapper );
- DBUG(("Pa_StartStream: DSW_StartInput returned = 0x%X.\n", hr));
- if( hr != DS_OK )
- {
- result = paHostError;
- sPaHostError = hr;
- goto error;
- }
-error:
-#endif /* SUPPORT_AUDIO_CAPTURE */
- return result;
-}
-/*************************************************************************/
-PaError PaHost_StartEngine( internalPortAudioStream *past )
-{
- PaHostSoundControl *pahsc;
- PaError result = paNoError;
- pahsc = (PaHostSoundControl *) past->past_DeviceData;
- past->past_StopNow = 0;
- past->past_StopSoon = 0;
- past->past_IsActive = 1;
- /* Create timer that will wake us up so we can fill the DSound buffer. */
- {
- int msecPerBuffer;
- int resolution;
- int bufsPerInterrupt;
-
- DBUG(("PaHost_StartEngine: past_NumUserBuffers = %d\n", past->past_NumUserBuffers));
- /* Decide how often to wake up and fill the buffers. */
- if( past->past_NumUserBuffers == 2 )
- {
- /* Generate two timer interrupts per user buffer. */
- msecPerBuffer = (500 * past->past_FramesPerUserBuffer) / (int) past->past_SampleRate;
- }
- else
- {
- if ( past->past_NumUserBuffers >= 16 ) bufsPerInterrupt = past->past_NumUserBuffers/8;
- else if ( past->past_NumUserBuffers >= 8 ) bufsPerInterrupt = 2;
- else bufsPerInterrupt = 1;
-
- msecPerBuffer = 1000 * (bufsPerInterrupt * past->past_FramesPerUserBuffer) / (int) past->past_SampleRate;
-
- DBUG(("PaHost_StartEngine: bufsPerInterrupt = %d\n", bufsPerInterrupt));
- }
-
- DBUG(("PaHost_StartEngine: msecPerBuffer = %d\n", msecPerBuffer));
-
- if( msecPerBuffer < 10 ) msecPerBuffer = 10;
- else if( msecPerBuffer > 100 ) msecPerBuffer = 100;
- DBUG(("PaHost_StartEngine: clipped msecPerBuffer = %d\n", msecPerBuffer));
-
- resolution = msecPerBuffer/4;
- pahsc->pahsc_TimerID = timeSetEvent( msecPerBuffer, resolution, (LPTIMECALLBACK) Pa_TimerCallback,
- (DWORD) past, TIME_PERIODIC );
- }
- if( pahsc->pahsc_TimerID == 0 )
- {
- past->past_IsActive = 0;
- result = paHostError;
- sPaHostError = 0;
- goto error;
- }
-error:
- return result;
-}
-/*************************************************************************/
-PaError PaHost_StopEngine( internalPortAudioStream *past, int abort )
-{
- int timeoutMsec;
- PaHostSoundControl *pahsc = (PaHostSoundControl *) past->past_DeviceData;
- if( pahsc == NULL ) return paNoError;
- if( abort ) past->past_StopNow = 1;
- past->past_StopSoon = 1;
- /* Set timeout at 20% beyond maximum time we might wait. */
- timeoutMsec = (int) (1200.0 * pahsc->pahsc_FramesPerDSBuffer / past->past_SampleRate);
- while( past->past_IsActive && (timeoutMsec > 0) )
- {
- Sleep(10);
- timeoutMsec -= 10;
- }
- if( pahsc->pahsc_TimerID != 0 )
- {
- timeKillEvent(pahsc->pahsc_TimerID); /* Stop callback timer. */
- pahsc->pahsc_TimerID = 0;
- }
- return paNoError;
-}
-/*************************************************************************/
-PaError PaHost_StopInput( internalPortAudioStream *past, int abort )
-{
-#if SUPPORT_AUDIO_CAPTURE
- HRESULT hr;
- PaHostSoundControl *pahsc = (PaHostSoundControl *) past->past_DeviceData;
- if( pahsc == NULL ) return paNoError;
- (void) abort;
- hr = DSW_StopInput( &pahsc->pahsc_DSoundWrapper );
- DBUG(("DSW_StopInput() result is %x\n", hr));
-#endif /* SUPPORT_AUDIO_CAPTURE */
- return paNoError;
-}
-/*************************************************************************/
-PaError PaHost_StopOutput( internalPortAudioStream *past, int abort )
-{
- HRESULT hr;
- PaHostSoundControl *pahsc;
- pahsc = (PaHostSoundControl *) past->past_DeviceData;
- if( pahsc == NULL ) return paNoError;
- (void) abort;
- hr = DSW_StopOutput( &pahsc->pahsc_DSoundWrapper );
- DBUG(("DSW_StopOutput() result is %x\n", hr));
- return paNoError;
-}
-/*******************************************************************/
-PaError PaHost_CloseStream( internalPortAudioStream *past )
-{
- PaHostSoundControl *pahsc;
- if( past == NULL ) return paBadStreamPtr;
- pahsc = (PaHostSoundControl *) past->past_DeviceData;
- if( pahsc == NULL ) return paNoError;
- DSW_Term( &pahsc->pahsc_DSoundWrapper );
- if( pahsc->pahsc_NativeBuffer )
- {
- PaHost_FreeFastMemory( pahsc->pahsc_NativeBuffer, pahsc->pahsc_BytesPerBuffer ); /* MEM */
- pahsc->pahsc_NativeBuffer = NULL;
- }
- PaHost_FreeFastMemory( pahsc, sizeof(PaHostSoundControl) ); /* MEM */
- past->past_DeviceData = NULL;
- return paNoError;
-}
-
-/* Set minimal latency based on whether NT or Win95.
- * NT has higher latency.
- */
-static int PaHost_GetMinSystemLatency( void )
-{
- int minLatencyMsec;
- /* Set minimal latency based on whether NT or other OS.
- * NT has higher latency.
- */
- OSVERSIONINFO osvi;
- osvi.dwOSVersionInfoSize = sizeof( osvi );
- GetVersionEx( &osvi );
- DBUG(("PA - PlatformId = 0x%x\n", osvi.dwPlatformId ));
- DBUG(("PA - MajorVersion = 0x%x\n", osvi.dwMajorVersion ));
- DBUG(("PA - MinorVersion = 0x%x\n", osvi.dwMinorVersion ));
- /* Check for NT */
- if( (osvi.dwMajorVersion == 4) && (osvi.dwPlatformId == 2) )
- {
- minLatencyMsec = PA_WIN_NT_LATENCY;
- }
- else if(osvi.dwMajorVersion >= 5)
- {
- minLatencyMsec = PA_WIN_WDM_LATENCY;
- }
- else
- {
- minLatencyMsec = PA_WIN_9X_LATENCY;
- }
- return minLatencyMsec;
-}
-
-/*************************************************************************
-** Determine minimum number of buffers required for this host based
-** on minimum latency. Latency can be optionally set by user by setting
-** an environment variable. For example, to set latency to 200 msec, put:
-**
-** set PA_MIN_LATENCY_MSEC=200
-**
-** in the AUTOEXEC.BAT file and reboot.
-** If the environment variable is not set, then the latency will be determined
-** based on the OS. Windows NT has higher latency than Win95.
-*/
-#define PA_LATENCY_ENV_NAME ("PA_MIN_LATENCY_MSEC")
-int Pa_GetMinNumBuffers( int framesPerBuffer, double sampleRate )
-{
- char envbuf[PA_ENV_BUF_SIZE];
- DWORD hresult;
- int minLatencyMsec = 0;
- double msecPerBuffer = (1000.0 * framesPerBuffer) / sampleRate;
- int minBuffers;
- /* Let user determine minimal latency by setting environment variable. */
- hresult = GetEnvironmentVariable( PA_LATENCY_ENV_NAME, envbuf, PA_ENV_BUF_SIZE );
- if( (hresult > 0) && (hresult < PA_ENV_BUF_SIZE) )
- {
- minLatencyMsec = atoi( envbuf );
- }
- else
- {
- minLatencyMsec = PaHost_GetMinSystemLatency();
-#if PA_USE_HIGH_LATENCY
- PRINT(("PA - Minimum Latency set to %d msec!\n", minLatencyMsec ));
-#endif
-
- }
- minBuffers = (int) (1.0 + ((double)minLatencyMsec / msecPerBuffer));
- if( minBuffers < 2 ) minBuffers = 2;
- return minBuffers;
-}
-/*************************************************************************/
-PaError PaHost_Term( void )
-{
- int i;
- /* Free names allocated during enumeration. */
- for( i=0; i<sNumDevices; i++ )
- {
- if( sDevices[i].pad_Info.name != NULL )
- {
- free( (void *) sDevices[i].pad_Info.name );
- sDevices[i].pad_Info.name = NULL;
- }
- }
- if( sDevices != NULL )
- {
- PaHost_FreeFastMemory( sDevices, sNumDevices * sizeof(internalPortAudioDevice) ); /* MEM */
- sDevices = NULL;
- sNumDevices = 0;
- }
- return 0;
-}
-void Pa_Sleep( long msec )
-{
- Sleep( msec );
-}
-/*************************************************************************
- * Allocate memory that can be accessed in real-time.
- * This may need to be held in physical memory so that it is not
- * paged to virtual memory.
- * This call MUST be balanced with a call to PaHost_FreeFastMemory().
- * Memory will be set to zero.
- */
-void *PaHost_AllocateFastMemory( long numBytes )
-{
- void *addr = GlobalAlloc( GPTR, numBytes ); /* FIXME - do we need physical memory? Use VirtualLock() */ /* MEM */
- return addr;
-}
-/*************************************************************************
- * Free memory that could be accessed in real-time.
- * This call MUST be balanced with a call to PaHost_AllocateFastMemory().
- */
-void PaHost_FreeFastMemory( void *addr, long numBytes )
-{
- if( addr != NULL ) GlobalFree( addr ); /* MEM */
-}
-/***********************************************************************/
-PaError PaHost_StreamActive( internalPortAudioStream *past )
-{
- PaHostSoundControl *pahsc;
- if( past == NULL ) return paBadStreamPtr;
- pahsc = (PaHostSoundControl *) past->past_DeviceData;
- if( pahsc == NULL ) return paInternalError;
- return (PaError) (past->past_IsActive);
-}
-/*************************************************************************/
-PaTimestamp Pa_StreamTime( PortAudioStream *stream )
-{
- DSoundWrapper *dsw;
- internalPortAudioStream *past = (internalPortAudioStream *) stream;
- PaHostSoundControl *pahsc;
- if( past == NULL ) return paBadStreamPtr;
- pahsc = (PaHostSoundControl *) past->past_DeviceData;
- dsw = &pahsc->pahsc_DSoundWrapper;
- return dsw->dsw_FramesPlayed;
-}
generated by cgit v1.2.1 (git 2.18.0) at 2024-06-18 13:44:24 +0000