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- Use Byteswap intriniscs to improve performance

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- Hint by Physicus

svn path=/trunk/; revision=39957
This commit is contained in:
Johannes Anderwald 2009-03-11 19:02:06 +00:00
parent 6d0e4470e0
commit 305a91c154
1 changed files with 29 additions and 32 deletions
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61
reactos/drivers/wdm/audio/filters/kmixer/pin.c
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@ -10,27 +10,6 @@
const GUID KSPROPSETID_Connection = {0x1D58C920L, 0xAC9B, 0x11CF, {0xA5, 0xD6, 0x28, 0xDB, 0x04, 0xC1, 0x00, 0x00}};
#ifdef _X86_
#define htons(w) \
((((w) & 0xFF00) >> 8) | \
(((w) & 0x00FF) << 8))
#define htonl(n) (((((unsigned long)(n) & 0xFF)) << 24) | \
((((unsigned long)(n) & 0xFF00)) << 8) | \
((((unsigned long)(n) & 0xFF0000)) >> 8) | \
((((unsigned long)(n) & 0xFF000000)) >> 24))
#define ntohs(n) (((((unsigned short)(n) & 0xFF)) << 8) | (((unsigned short)(n) & 0xFF00) >> 8))
#define ntohl(n) (((((unsigned long)(n) & 0xFF)) << 24) | \
((((unsigned long)(n) & 0xFF00)) << 8) | \
((((unsigned long)(n) & 0xFF0000)) >> 8) | \
((((unsigned long)(n) & 0xFF000000)) >> 24))
#endif
NTSTATUS
PerformQualityConversion(
PUCHAR Buffer,
@ -59,7 +38,10 @@ PerformQualityConversion(
{
Sample = Buffer[Index];
Sample *= 2;
BufferOut[Index] = htons(Sample);
#ifdef _X86_
Sample = _byteswap_ushort(Sample);
#endif
BufferOut[Index] = Sample;
}
*Result = BufferOut;
*ResultLength = Samples * sizeof(USHORT);
@ -75,7 +57,10 @@ PerformQualityConversion(
{
Sample = Buffer[Index];
Sample *= 16777216;
BufferOut[Index] = htonl(Sample);
#ifdef _X86_
Sample = _byteswap_ulong(Sample);
#endif
BufferOut[Index] = Sample;
}
*Result = BufferOut;
*ResultLength = Samples * sizeof(ULONG);
@ -92,7 +77,10 @@ PerformQualityConversion(
{
Sample = BufferIn[Index];
Sample *= 65536;
BufferOut[Index] = htonl(Sample);
#ifdef _X86_
Sample = _byteswap_ulong(Sample);
#endif
BufferOut[Index] = Sample;
}
*Result = BufferOut;
*ResultLength = Samples * sizeof(ULONG);
@ -109,9 +97,11 @@ PerformQualityConversion(
for(Index = 0; Index < Samples; Index++)
{
Sample = BufferIn[Index];
Sample = ntohs(Sample);
#ifdef _X86_
Sample = _byteswap_ushort(Sample);
#endif
Sample /= 256;
BufferOut[Index] = (Sample / 0xFF);
BufferOut[Index] = (Sample & 0xFF);
}
*Result = BufferOut;
*ResultLength = Samples * sizeof(UCHAR);
@ -127,9 +117,11 @@ PerformQualityConversion(
for(Index = 0; Index < Samples; Index++)
{
Sample = BufferIn[Index];
Sample = ntohl(Sample);
#ifdef _X86_
Sample = _byteswap_ulong(Sample);
#endif
Sample /= 16777216;
BufferOut[Index] = Sample & 0xFF;
BufferOut[Index] = (Sample & 0xFF);
}
*Result = BufferOut;
*ResultLength = Samples * sizeof(UCHAR);
@ -145,9 +137,11 @@ PerformQualityConversion(
for(Index = 0; Index < Samples; Index++)
{
Sample = BufferIn[Index];
Sample = ntohl(Sample);
#ifdef _X86_
Sample = _byteswap_ulong(Sample);
#endif
Sample /= 65536;
BufferOut[Index] = Sample & 0xFFFF;
BufferOut[Index] = (Sample & 0xFFFF);
}
*Result = BufferOut;
*ResultLength = Samples * sizeof(USHORT);
@ -380,7 +374,7 @@ Pin_fnFastWrite(
PKSDATAFORMAT_WAVEFORMATEX BaseFormat, TransformedFormat;
DPRINT1("Pin_fnFastWrite called DeviceObject %p Irp %p\n", DeviceObject);
//DPRINT1("Pin_fnFastWrite called DeviceObject %p Irp %p\n", DeviceObject);
BaseFormat = (PKSDATAFORMAT_WAVEFORMATEX)FileObject->FsContext2;
@ -406,10 +400,12 @@ Pin_fnFastWrite(
TransformedFormat = (PKSDATAFORMAT_WAVEFORMATEX)(ConnectDetails + 1);
StreamHeader = (PKSSTREAM_HEADER)Buffer;
#if 0
DPRINT1("Num Channels %u Old Channels %u\n SampleRate %u Old SampleRate %u\n BitsPerSample %u Old BitsPerSample %u\n",
BaseFormat->WaveFormatEx.nChannels, TransformedFormat->WaveFormatEx.nChannels,
BaseFormat->WaveFormatEx.nSamplesPerSec, TransformedFormat->WaveFormatEx.nSamplesPerSec,
BaseFormat->WaveFormatEx.wBitsPerSample, TransformedFormat->WaveFormatEx.wBitsPerSample);
#endif
if (BaseFormat->WaveFormatEx.wBitsPerSample != TransformedFormat->WaveFormatEx.wBitsPerSample)
{
@ -421,7 +417,7 @@ Pin_fnFastWrite(
&BufferLength);
if (NT_SUCCESS(Status))
{
DPRINT1("Old BufferSize %u NewBufferSize %u\n", StreamHeader->DataUsed, BufferLength);
//DPRINT1("Old BufferSize %u NewBufferSize %u\n", StreamHeader->DataUsed, BufferLength);
ExFreePool(StreamHeader->Data);
StreamHeader->Data = BufferOut;
StreamHeader->DataUsed = BufferLength;
@ -431,6 +427,7 @@ Pin_fnFastWrite(
if (BaseFormat->WaveFormatEx.nSamplesPerSec != TransformedFormat->WaveFormatEx.nSamplesPerSec)
{
/* sample format conversion must be done in a deferred routine */
DPRINT1("SampleRate conversion not available yet\n");
return FALSE;
}