format.c File Reference

#include "precomp.h"

Include dependency graph for format.c:

Go to the source code of this file.

Functions
MMRESULT	QueryWaveDeviceFormatSupport (IN PSOUND_DEVICE SoundDevice, IN LPWAVEFORMATEX Format, IN DWORD FormatSize)
MMRESULT	SetWaveDeviceFormat (IN PSOUND_DEVICE_INSTANCE SoundDeviceInstance, IN DWORD DeviceId, IN LPWAVEFORMATEX Format, IN DWORD FormatSize)

Function Documentation

QueryWaveDeviceFormatSupport()

MMRESULT QueryWaveDeviceFormatSupport	(	IN PSOUND_DEVICE	SoundDevice,
		IN LPWAVEFORMATEX	Format,
		IN DWORD	FormatSize
	)

Definition at line 14 of file format.c.

{
    MMRESULT Result;
    MMDEVICE_TYPE DeviceType;
    PMMFUNCTION_TABLE FunctionTable;
 
    SND_TRACE(L"Querying wave format support\n");
 
    VALIDATE_MMSYS_PARAMETER( IsValidSoundDevice(SoundDevice) );
    VALIDATE_MMSYS_PARAMETER( Format );
    VALIDATE_MMSYS_PARAMETER( FormatSize >= sizeof(WAVEFORMATEX) );
 
    Result = GetSoundDeviceType(SoundDevice, &DeviceType);
    SND_ASSERT( Result == MMSYSERR_NOERROR );
 
    /* Ensure we have a wave device (TODO: check if this applies to wavein as well) */
    VALIDATE_MMSYS_PARAMETER( IS_WAVE_DEVICE_TYPE(DeviceType) );
 
    /* Obtain the function table */
    Result = GetSoundDeviceFunctionTable(SoundDevice, &FunctionTable);
    SND_ASSERT( Result == MMSYSERR_NOERROR );
 
    if ( ! MMSUCCESS(Result) )
        return TranslateInternalMmResult(Result);
 
    if ( ! FunctionTable->QueryWaveFormatSupport )
        return MMSYSERR_NOTSUPPORTED;
 
    return FunctionTable->QueryWaveFormatSupport(SoundDevice, Format, FormatSize);
}

Referenced by MmeOpenDevice().

SetWaveDeviceFormat()

MMRESULT SetWaveDeviceFormat	(	IN PSOUND_DEVICE_INSTANCE	SoundDeviceInstance,
		IN DWORD	DeviceId,
		IN LPWAVEFORMATEX	Format,
		IN DWORD	FormatSize
	)

Definition at line 49 of file format.c.

{
    MMRESULT Result;
    MMDEVICE_TYPE DeviceType;
    PMMFUNCTION_TABLE FunctionTable;
    PSOUND_DEVICE SoundDevice;
 
    SND_TRACE(L"Setting wave format\n");
 
    VALIDATE_MMSYS_PARAMETER( IsValidSoundDeviceInstance(SoundDeviceInstance) );
 
    Result = GetSoundDeviceFromInstance(SoundDeviceInstance, &SoundDevice);
    if ( ! MMSUCCESS(Result) )
        return TranslateInternalMmResult(Result);
 
    Result = GetSoundDeviceType(SoundDevice, &DeviceType);
    SND_ASSERT( Result == MMSYSERR_NOERROR );
    if (DeviceType == WAVE_IN_DEVICE_TYPE || DeviceType == WAVE_OUT_DEVICE_TYPE)
    {
        VALIDATE_MMSYS_PARAMETER( Format );
        VALIDATE_MMSYS_PARAMETER( FormatSize >= sizeof(WAVEFORMATEX) );
    }
 
    /* Ensure we have a wave device (TODO: check if this applies to wavein as well) */
    VALIDATE_MMSYS_PARAMETER( IS_WAVE_DEVICE_TYPE(DeviceType) || IS_MIDI_DEVICE_TYPE(DeviceType) || IS_MIXER_DEVICE_TYPE(DeviceType));
 
    /* Obtain the function table */
    Result = GetSoundDeviceFunctionTable(SoundDevice, &FunctionTable);
    SND_ASSERT( Result == MMSYSERR_NOERROR );
 
    if ( ! MMSUCCESS(Result) )
        return TranslateInternalMmResult(Result);
 
    if ( ! FunctionTable->SetWaveFormat )
        return MMSYSERR_NOTSUPPORTED;
 
    return FunctionTable->SetWaveFormat(SoundDeviceInstance, DeviceId, Format, FormatSize);
}

Referenced by MmeOpenDevice().