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[USBAUDIO]

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- partly implement GetDataRangeIndexForFormat

svn path=/trunk/; revision=73150
This commit is contained in:
Johannes Anderwald 2016-11-06 13:59:39 +00:00
parent 0c93077425
commit 99e69d6761
1 changed files with 77 additions and 4 deletions
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81
reactos/drivers/usb/usbaudio/pin.c
View file

@ -694,6 +694,71 @@ InitStreamPin(
return STATUS_SUCCESS;
}
ULONG
GetDataRangeIndexForFormat(
IN PKSDATARANGE ConnectionFormat,
IN PKSDATARANGE * DataRanges,
IN ULONG DataRangesCount)
{
ULONG Index;
PKSDATARANGE CurrentDataRange;
PKSDATARANGE_AUDIO CurrentAudioDataRange;
PKSDATAFORMAT_WAVEFORMATEX ConnectionDataFormat;
if (ConnectionFormat->FormatSize != sizeof(KSDATAFORMAT) + sizeof(WAVEFORMATEX))
{
/* unsupported connection format */
DPRINT1("GetDataRangeIndexForFormat expected KSDATARANGE_AUDIO\n");
return MAXULONG;
}
/* cast to right type */
ConnectionDataFormat = (PKSDATAFORMAT_WAVEFORMATEX)ConnectionFormat;
for (Index = 0; Index < DataRangesCount; Index++)
{
/* get current data range */
CurrentDataRange = DataRanges[Index];
/* compare guids */
if (!IsEqualGUIDAligned(&CurrentDataRange->MajorFormat, &ConnectionFormat->MajorFormat) ||
!IsEqualGUIDAligned(&CurrentDataRange->SubFormat, &ConnectionFormat->SubFormat) ||
!IsEqualGUIDAligned(&CurrentDataRange->Specifier, &ConnectionFormat->Specifier))
{
/* no match */
continue;
}
/* all pin data ranges are KSDATARANGE_AUDIO */
CurrentAudioDataRange = (PKSDATARANGE_AUDIO)CurrentDataRange;
/* check if number of channel match */
if (CurrentAudioDataRange->MaximumChannels != ConnectionDataFormat->WaveFormatEx.nChannels)
{
/* number of channels mismatch */
continue;
}
if (CurrentAudioDataRange->MinimumSampleFrequency > ConnectionDataFormat->WaveFormatEx.nSamplesPerSec)
{
/* channel frequency too low */
continue;
}
if (CurrentAudioDataRange->MaximumSampleFrequency < ConnectionDataFormat->WaveFormatEx.nSamplesPerSec)
{
/* channel frequency too high */
continue;
}
/* FIXME add checks for bitrate / sample size etc */
return Index;
}
/* no datarange found */
return MAXULONG;
}
NTSTATUS
NTAPI
USBAudioPinCreate(
@ -704,6 +769,7 @@ USBAudioPinCreate(
PFILTER_CONTEXT FilterContext;
PPIN_CONTEXT PinContext;
NTSTATUS Status;
ULONG FormatIndex;
Filter = KsPinGetParentFilter(Pin);
if (Filter == NULL)
@ -741,9 +807,16 @@ USBAudioPinCreate(
ASSERT(Status == STATUS_SUCCESS);
}
/* choose correct dataformat */
FormatIndex = GetDataRangeIndexForFormat(Pin->ConnectionFormat, Pin->Descriptor->PinDescriptor.DataRanges, Pin->Descriptor->PinDescriptor.DataRangesCount);
if (FormatIndex == MAXULONG)
{
/* no format match */
return STATUS_NO_MATCH;
}
/* select streaming interface */
/* FIXME choose correct dataformat */
Status = USBAudioSelectAudioStreamingInterface(Pin, PinContext, PinContext->DeviceExtension, PinContext->DeviceExtension->ConfigurationDescriptor, 0);
Status = USBAudioSelectAudioStreamingInterface(Pin, PinContext, PinContext->DeviceExtension, PinContext->DeviceExtension->ConfigurationDescriptor, FormatIndex);
if (!NT_SUCCESS(Status))
{
/* failed */
@ -980,7 +1053,7 @@ PinRenderProcess(
/* calculate offset*/
Offset = TotalPacketSize - PinContext->BufferLength;
if (PinContext->BufferOffset + Offset >= PinContext->BufferSize)
if (PinContext->BufferOffset + TotalPacketSize >= PinContext->BufferSize)
{
RtlMoveMemory(PinContext->Buffer, &PinContext->Buffer[PinContext->BufferOffset - PinContext->BufferLength], PinContext->BufferLength);
PinContext->BufferOffset = PinContext->BufferLength;
@ -1025,7 +1098,7 @@ PinRenderProcess(
PinContext->BufferLength = CloneStreamPointer->OffsetIn.Remaining - ((PacketCount * TotalPacketSize) + Offset);
/* check for overflow */
if (PinContext->BufferOffset + Offset >= PinContext->BufferSize)
if (PinContext->BufferOffset + TotalPacketSize >= PinContext->BufferSize)
{
/* reset buffer offset*/
PinContext->BufferOffset = 0;