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[USBAUDIO]

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- partly implement UsbAudioPinDataIntersect

svn path=/trunk/; revision=72970
This commit is contained in:
Johannes Anderwald 2016-10-14 13:26:22 +00:00
parent 4b5428d521
commit 1c43c34853
3 changed files with 77 additions and 0 deletions
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3
reactos/drivers/usb/usbaudio/filter.c
View file

@ -448,7 +448,10 @@ USBAudioPinBuildDescriptors(
Pins[Index].PinDescriptor.DataFlow = KSPIN_DATAFLOW_IN;
}
/* data intersect handler */
Pins[Index].IntersectHandler = UsbAudioPinDataIntersect;
/* pin flags */
Pins[Index].Flags = KSPIN_FLAG_PROCESS_IN_RUN_STATE_ONLY | KSFILTER_FLAG_CRITICAL_PROCESSING;
/* irp sinks / sources can be instantiated */

62
reactos/drivers/usb/usbaudio/pin.c
View file

@ -1074,3 +1074,65 @@ USBAudioPinSetDeviceState(
return Status;
}
NTSTATUS
NTAPI
UsbAudioPinDataIntersect(
_In_ PVOID Context,
_In_ PIRP Irp,
_In_ PKSP_PIN Pin,
_In_ PKSDATARANGE DataRange,
_In_ PKSDATARANGE MatchingDataRange,
_In_ ULONG DataBufferSize,
_Out_ PVOID Data,
_Out_ PULONG DataSize)
{
PKSFILTER Filter;
PKSPIN_DESCRIPTOR_EX PinDescriptor;
PKSDATAFORMAT_WAVEFORMATEX DataFormat;
PKSDATARANGE_AUDIO DataRangeAudio;
/* get filter from irp*/
Filter = KsGetFilterFromIrp(Irp);
if (!Filter)
{
/* no match*/
return STATUS_NO_MATCH;
}
/* get pin descriptor */
PinDescriptor = &Filter->Descriptor->PinDescriptors[Pin->PinId];
*DataSize = sizeof(KSDATAFORMAT_WAVEFORMATEX);
if (DataBufferSize == 0)
{
/* buffer too small */
return STATUS_BUFFER_OVERFLOW;
}
/* sanity checks*/
ASSERT(PinDescriptor->PinDescriptor.DataRangesCount >= 0);
ASSERT(PinDescriptor->PinDescriptor.DataRanges[0]->FormatSize == sizeof(KSDATARANGE_AUDIO));
DataRangeAudio = (PKSDATARANGE_AUDIO)PinDescriptor->PinDescriptor.DataRanges[0];
DataFormat = Data;
DataFormat->WaveFormatEx.wFormatTag = WAVE_FORMAT_PCM;
DataFormat->WaveFormatEx.nChannels = DataRangeAudio->MaximumChannels;
DataFormat->WaveFormatEx.nSamplesPerSec = DataRangeAudio->MaximumSampleFrequency;
DataFormat->WaveFormatEx.nAvgBytesPerSec = DataRangeAudio->MaximumSampleFrequency * (DataRangeAudio->MaximumBitsPerSample / 8) * DataRangeAudio->MaximumChannels;
DataFormat->WaveFormatEx.nBlockAlign = (DataRangeAudio->MaximumBitsPerSample / 8) * DataRangeAudio->MaximumChannels;
DataFormat->WaveFormatEx.wBitsPerSample = DataRangeAudio->MaximumBitsPerSample;
DataFormat->WaveFormatEx.cbSize = 0;
DataFormat->DataFormat.FormatSize = sizeof(KSDATAFORMAT) + sizeof(WAVEFORMATEX);
DataFormat->DataFormat.Flags = 0;
DataFormat->DataFormat.Reserved = 0;
DataFormat->DataFormat.MajorFormat = KSDATAFORMAT_TYPE_AUDIO;
DataFormat->DataFormat.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
DataFormat->DataFormat.Specifier = KSDATAFORMAT_SPECIFIER_WAVEFORMATEX;
DataFormat->DataFormat.SampleSize = (DataRangeAudio->MaximumBitsPerSample / 8) * DataRangeAudio->MaximumChannels;
return STATUS_SUCCESS;
}

12
reactos/drivers/usb/usbaudio/usbaudio.h
View file

@ -253,6 +253,18 @@ USBAudioPnPSetPower(
/* pin.c*/
NTSTATUS
NTAPI
UsbAudioPinDataIntersect(
_In_ PVOID Context,
_In_ PIRP Irp,
_In_ PKSP_PIN Pin,
_In_ PKSDATARANGE DataRange,
_In_ PKSDATARANGE MatchingDataRange,
_In_ ULONG DataBufferSize,
_Out_ PVOID Data,
_Out_ PULONG DataSize);
NTSTATUS
NTAPI
UsbAudioCaptureComplete(