[janderwald] 49337: [PORTCLS] - Fix stupid bug which lead to access an invalid buffer. - dedicated to igorko

Author: janderwald
Date: Fri Oct 29 01:09:13 2010
New Revision: 49337

URL: http://svn.reactos.org/svn/reactos?rev=49337&view=rev
Log:
[PORTCLS]
- Fix stupid bug which lead to access an invalid buffer.
- dedicated to igorko

Modified:
    trunk/reactos/drivers/wdm/audio/backpln/portcls/pin_wavecyclic.cpp

Modified: trunk/reactos/drivers/wdm/audio/backpln/portcls/pin_wavecyclic.cpp
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/wdm/audio/backpln/p...
==============================================================================
--- trunk/reactos/drivers/wdm/audio/backpln/portcls/pin_wavecyclic.cpp [iso-8859-1] (original)
+++ trunk/reactos/drivers/wdm/audio/backpln/portcls/pin_wavecyclic.cpp [iso-8859-1] Fri Oct 29 01:09:13 2010
@@ -699,15 +699,15 @@
         if (!NT_SUCCESS(Status))
         {
             Gap = Position - m_CommonBufferOffset;
-            if (Gap > m_FrameSize)
+            if (Gap > BufferLength)
             {
                 // insert silence samples
                 DPRINT1("Inserting Silence Buffer Offset %lu GapLength %lu\n", m_CommonBufferOffset, BufferLength);
                 m_Stream->Silence((PUCHAR)m_CommonBuffer + m_CommonBufferOffset, BufferLength);

m_CommonBufferOffset += BufferLength;
-                break;
             }
+            break;
         }

BytesToCopy = min(BufferLength, BufferSize);
@@ -758,7 +758,7 @@
         if (!NT_SUCCESS(Status))
         {
             Gap = m_CommonBufferSize - m_CommonBufferOffset + Position;
-            if (Gap > m_FrameSize)
+            if (Gap > BufferLength)
             {
                 // insert silence samples
                 DPRINT1("Overlap Inserting Silence Buffer Size %lu Offset %lu Gap %lu Position %lu\n", m_CommonBufferSize, m_CommonBufferOffset, Gap, Position);
@@ -771,7 +771,7 @@

BytesToCopy = min(BufferLength, BufferSize);

-        if (m_Capture) 
+        if (m_Capture)
         {
             m_DmaChannel->CopyFrom(Buffer,
                                              (PUCHAR)m_CommonBuffer + m_CommonBufferOffset,
@@ -1290,7 +1290,7 @@
     PC_ASSERT(NT_SUCCESS(Status));
     PC_ASSERT(m_FrameSize);

-    DPRINT1("Bits %u Samples %u Channels %u Tag %u FrameSize %u CommonBufferSize %lu\n", ((PKSDATAFORMAT_WAVEFORMATEX)(DataFormat))->WaveFormatEx.wBitsPerSample, ((PKSDATAFORMAT_WAVEFORMATEX)(DataFormat))->WaveFormatEx.nSamplesPerSec, ((PKSDATAFORMAT_WAVEFORMATEX)(DataFormat))->WaveFormatEx.nChannels, ((PKSDATAFORMAT_WAVEFORMATEX)(DataFormat))->WaveFormatEx.wFormatTag, m_FrameSize, m_CommonBufferSize);
+    DPRINT1("Bits %u Samples %u Channels %u Tag %u FrameSize %u CommonBufferSize %lu, CommonBuffer %p\n", ((PKSDATAFORMAT_WAVEFORMATEX)(DataFormat))->WaveFormatEx.wBitsPerSample, ((PKSDATAFORMAT_WAVEFORMATEX)(DataFormat))->WaveFormatEx.nSamplesPerSec, ((PKSDATAFORMAT_WAVEFORMATEX)(DataFormat))->WaveFormatEx.nChannels, ((PKSDATAFORMAT_WAVEFORMATEX)(DataFormat))->WaveFormatEx.wFormatTag, m_FrameSize, m_CommonBufferSize, m_DmaChannel->SystemAddress());

/* set up allocator framing */